Bag arranging structure of bag making apparatus

Abstract

The utility model discloses a bagging equipment's reason bag structure, including setting in the bag body of bagging equipment's frame on the bag body bearing part and at least one bag body alignment part, and the bag body bearing part has the bearing part, and the packing bag of bag body bearing part along bag body stacking direction enters the bag body bearing part and is successively overlapped on the bearing part, each bag body alignment part is set in the corresponding side of bearing part, and the side close to the bearing part has the alignment end, and the alignment end can be along the alignment direction perpendicular to bag body stacking direction and abuts on the corresponding one side edge of packing bag on the bearing part. The alignment end can apply the push resistance to the side edge of packing bag in the alignment direction, and drives the side edge to move to the alignment reference position, thereby can correct each packing bag because of the side edge misplacement of falling bag deviation, flexible deformation and other factors, and makes the corresponding side edge of each packing bag in the stacking group more regular.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, and in particular to a bag sorting structure for a bag making equipment. Background Technology

[0002] In the automated production process of packaging bags (such as paper bags, plastic bags, woven bags, etc.), after the bag-making equipment completes the bag forming, it usually needs to neatly stack and collect the formed packaging bags according to a predetermined quantity so that they can be transferred to the next station for subsequent processing such as bundling and boxing.

[0003] However, in existing technologies, packaging bags often exhibit uneven stacking during collection and stacking at the output end of bag-making equipment. Specifically, due to factors such as airflow, friction, and their own flexible deformation during conveying and dropping, the dropping positions of the bags deviate, resulting in uneven side edges of the bags on the receiving section, making it impossible to form a neat and regular stack. Taking a vertical paper bag making machine as an example, the formed packaging bags enter the receiving section sequentially along the bag stacking direction and are stacked, but the side edges of each bag in the width direction are prone to misalignment, causing the stacked packaging bags to be skewed overall. This creates difficulties for subsequent processes such as holding, transferring, and bundling, affecting overall production efficiency and packaging quality.

[0004] Therefore, the existing bag sorting structure has the problem of being irregular during the stacking and collection of packaging bags, which affects the quality of subsequent packaging. Utility Model Content

[0005] The purpose of this application is to solve the problem that the existing bag sorting structure is irregular during the stacking and collection of packaging bags, which affects the quality of subsequent packaging.

[0006] This application provides a bag sorting structure for a bag making equipment, including: a bag receiving component disposed on the frame of the bag making equipment, the bag receiving component having a receiving portion, and packaging bags entering the bag receiving component along the bag stacking direction being stacked sequentially on the receiving portion; and at least one bag alignment component, each bag alignment component being disposed on a corresponding side of the receiving portion, and having an alignment end on the side closer to the receiving portion, the alignment end being able to abut against the corresponding edge of the packaging bag on the receiving portion along an alignment direction perpendicular to the bag stacking direction.

[0007] Using the above technical solution, the receiving part of the bag receiving component receives the packaging bags formed and output by the bag making equipment. The packaging bags are stacked sequentially on the receiving part along the bag stacking direction to form a stacking group. Due to factors such as airflow disturbance, conveying speed fluctuation, and the flexible deformation of the bag itself during the bag dropping process, the position of each packaging bag in the alignment direction when it falls into the receiving part has random deviation, resulting in uneven side edges. The alignment end of the bag alignment component can abut against the corresponding side edge of the packaging bag on the receiving part in an alignment direction perpendicular to the bag stacking direction. The alignment end applies a pushing force to the side edge of the packaging bag in the alignment direction, driving the side edge to move to the alignment reference position. This can correct the misalignment of the side edges of each packaging bag caused by dropping deviation, flexible deformation, etc., and make the corresponding side edges of each packaging bag in the stacking group tend to be neat and consistent.

[0008] In addition, the bag alignment component is fixedly installed on the frame of the bag making equipment and is integrated with the bag making equipment as a whole. It does not require an additional independent alignment device, which helps to make the equipment structure compact and reduce the floor space. The alignment action is carried out continuously during the stacking of packaging bags without interrupting the production cycle. Alignment can be achieved without reducing the bag output speed, which is beneficial to the overall production efficiency.

[0009] According to the bag-making equipment provided in this application, the bag alignment component includes an alignment drive mechanism and a pushing member disposed at the drive end of the alignment drive mechanism. The alignment end is the end face of the pushing member facing the corresponding edge of the packaging bag. The alignment drive mechanism drives the pushing member to reciprocate along the alignment direction and switches between an extended position and an initial position when pushing and aligning the corresponding edge of the packaging bag. The alignment end has a planar shape parallel to the bag stacking direction.

[0010] Using the above technical solution, the alignment drive mechanism actively drives the pushing component to reciprocate along the alignment direction. During the pushing and alignment phase, the pushing component moves from its initial position to its extended position. The alignment end of the pushing component, with a planar shape parallel to the bag stacking direction, contacts the corresponding side edges of the multiple stacked bags on the receiving part. By utilizing the simultaneous contact between the planar end face and the side edges of multiple bags, a uniform alignment force is applied synchronously to the side edges of multiple bags within the entire stack in one pushing action, uniformly pushing the side edges to the alignment reference position defined by the extended position. After the pushing is completed, the drive mechanism drives the pushing component back to its initial position, making room for subsequent bags to be stacked, and then proceeding to the next pushing cycle. During the pushing process, even if the bags have large dropping deviations or slight wrinkles or deformations, the pushing component can still push them to the alignment position with active force, resulting in high alignment reliability. The planar alignment end can simultaneously contact the side edges of multiple bags, resulting in high alignment efficiency and uniform force distribution, which helps prevent localized overpressure damage to the edges of individual bags during alignment.

[0011] In addition, the frequency and timing of the actively driven pushing action can be coordinated and synchronized with the bag output cycle of the bag making equipment, so that each packaging bag can be aligned and sorted in a timely manner after being stacked, which is conducive to maintaining the neatness of the stacked group in high-speed production.

[0012] According to the bag sorting structure of the bag making equipment provided in this application, the bag body alignment component further includes an alignment adjustment mechanism. An alignment drive mechanism is disposed on the alignment adjustment mechanism. The position of the alignment adjustment mechanism in the alignment direction is adjustable, driving the alignment drive mechanism and the pusher component to adjust the extension position of the alignment end relative to the receiving part; or, the position of the drive end of the alignment drive mechanism in the alignment direction is adjustable, driving the pusher component to adjust the extension position of the alignment end relative to the receiving part.

[0013] By employing the above technical solution, the absolute coordinates of the alignment direction of the alignment drive mechanism as a whole can be changed by adjusting the alignment adjustment mechanism, or by adjusting the position of the drive end of the alignment drive mechanism in the alignment direction. This changes the alignment reference position to which the side edge of the packaging bag is pushed. When the production line needs to switch to packaging bags of different sizes, no parts need to be replaced. Simply adjust the extension position of the alignment end through the adjustment mechanism to quickly adapt the alignment reference to the width of the new packaging bag size. This effectively shortens downtime for size changeovers and improves the flexibility of the equipment for producing multiple sizes of packaging bags. This rapid size changeover capability is particularly important in multi-variety, small-batch production modes, helping to reduce production changeover costs and improve equipment utilization.

[0014] According to the bag-making equipment provided in this application, the bag alignment component includes a guide member, and the alignment end is the end face of the guide member facing the corresponding edge of the packaging bag; wherein, the alignment end has a planar shape that extends obliquely relative to the stacking direction of the bag body, and the distance between the alignment end and the corresponding edge of the packaging bag in the alignment direction gradually decreases from the inside of the receiving part to the outside.

[0015] Using the above technical solution, the alignment end of the guiding component has a planar shape that extends at an angle relative to the stacking direction of the bags. Along the stacking direction, from the inner side of the receiving part (the bag entry end) to the outer side (the bag stack end), the distance between the alignment end and the corresponding edge of the bag gradually decreases in the alignment direction, forming a gradually narrowing passive guiding channel. When the bag moves into the guiding channel along the stacking direction, its side edge first contacts the wider entrance of the alignment end. As the bag continues to move in the stacking direction, the side edge is guided by the component force applied continuously by the inclined surface along the alignment direction, gradually converging towards the alignment direction. When the bag reaches the final stacking position of the receiving part, the side edge has been naturally guided and aligned to the alignment position defined by the end of the inclined surface, completing the passive alignment. This passive guided alignment utilizes the kinetic energy of the bag's own movement in the stacking direction to complete the alignment, requiring no additional drive device or control system. It has a simple structure, low energy consumption, and high reliability, making it more suitable for production applications where bag dropping deviation is small and low-cost, simple structures are desired.

[0016] According to the bag-making equipment provided in this application, the bag alignment component further includes a guiding adjustment mechanism. The guiding component is disposed on the guiding adjustment mechanism. The position of the guiding adjustment mechanism in the alignment direction is adjustable, and the guiding component is driven to adjust the position of the alignment end relative to the receiving part in the alignment direction.

[0017] Using the above technical solution, the guiding adjustment mechanism can adjust the overall position of the guiding component in the alignment direction, thereby changing the position of the end of the guiding channel in the alignment direction, that is, changing the final alignment reference position to which the side edge of the packaging bag is guided. When switching between packaging bags of different sizes, by adjusting the guiding adjustment mechanism to move the guiding component in the alignment direction to a position corresponding to the width of the new packaging bag, the narrowest point of the guiding channel can be matched with the alignment position of the side edge of the new packaging bag. The effective width of the guiding channel is simultaneously adapted, ensuring that packaging bags of different sizes can pass smoothly through the guiding channel and be accurately guided to the alignment position. The adjustment for changing sizes is quick and convenient, which can improve the equipment's ability to adapt to multi-specification production.

[0018] According to the bag-feeding structure of the bag-making equipment provided in this application, the bag receiving component receives the packaging bag in an upright position on the receiving part; and the alignment direction is parallel to the width direction of the packaging bag, with the alignment end of each bag alignment component abutting against the corresponding width edge of the packaging bag.

[0019] Using the above technical solution, the bag receiving component receives the packaging bag in an upright position. When the packaging bags are stacked upright, the bag occupies a large space in the height direction, but only one bag thickness in the stacking direction. Therefore, a larger number of packaging bags can be accommodated per unit stack length, which is beneficial for achieving a larger stacking capacity within a limited receiving section length, reducing the frequency of each transfer, and improving production cycle efficiency. In the upright stacking state, the side edges of the packaging bags in the width direction are the most prone to misalignment due to dropping deviation, because the rigidity of the packaging bags in the width direction is relatively low, and they are easily laterally deflected by factors such as airflow during dropping. The alignment direction of the bag alignment component is parallel to the width direction of the packaging bag, and the alignment end directly abuts the width edge, specifically eliminating the side edge misalignment in the width direction. This ensures that the width edges of the upright stacked packaging bags are aligned neatly, providing a neat and regular stacking group for subsequent clamping, holding, and transfer along the width direction, which is beneficial for improving the accuracy and efficiency of subsequent processes.

[0020] According to the bag-making equipment provided in this application, at least one bag alignment component includes a first alignment component and a second alignment component. The first alignment component and the second alignment component are spaced apart on the frame along a height direction perpendicular to the bag stacking direction. The alignment end of the first alignment component abuts against the middle position of the corresponding side edge of the packaging bag in the height direction in the alignment direction. The alignment end of the second alignment component abuts against the corresponding side edge of the packaging bag near the bag opening in the height direction in the alignment direction.

[0021] Using the above technical solution, the first and second alignment components are spaced apart in the height direction, applying alignment forces at the middle height position and the height position near the bag opening on the corresponding side edge of the packaging bag, respectively, to achieve multi-position constraint on the same side edge in the height direction. For packaging bags stacked upright, the rigidity of the middle position of the bag body is relatively high, making alignment easier. However, the position near the bag opening is more prone to lateral deviation when the bag is placed down due to the more complex structure of the bag opening (such as folds, handle holes, etc.) and lower overall rigidity. Single-point alignment at the middle position is often insufficient to effectively constrain edge deviation at the bag opening. The alignment end of the second alignment component is specifically designed for the position near the bag opening, supplementing the bag opening area that cannot be fully covered by the alignment at the middle position. The two alignment components work together to achieve full-height side edge alignment from the middle to the bag opening, effectively eliminating the problem of residual deviation at the side edge of the bag opening when stacked upright. This ensures that the side edges of the entire stack of packaging bags remain neat at all heights from the middle to the bag opening, resulting in a more comprehensive and reliable alignment effect.

[0022] According to the bag-making equipment provided in this application, at least one bag body alignment component is provided with at least one pair, and at least one pair of bag body alignment components are provided on both sides of the bag body receiving component along the width direction of the bag body; wherein, the alignment end of each pair of bag body alignment components can abut against the corresponding side edge of the packaging bag in the alignment direction and push against the corresponding side edges of the bag body along the width direction of the bag body.

[0023] Using the above technical solution, paired bag alignment components are respectively arranged on both sides of the receiving component along the width direction. The two alignment ends can simultaneously apply alignment thrusts inward from both sides of the width direction to the two width edges of the packaging bag. Compared with single-sided alignment, when the two alignment ends push simultaneously, the symmetrical thrusts acting on the two sides of the packaging bag form a centering constraint limit, which can automatically constrain the width center of the packaging bag to the symmetrical centerline position between the two alignment ends, resulting in higher alignment accuracy. Moreover, the simultaneous push from both sides avoids the problem of the packaging bag tilting as a whole due to unilateral force when pushing from one side, and the overall position of the stacked packaging bags in the width direction is more central and stable. After alignment, the width edges of the entire stack of packaging bags are neat, which facilitates the double-sided clamping, grasping and transferring operations that require precise positioning in subsequent processes, and helps to further improve the alignment accuracy and automation level of the entire production line.

[0024] According to the bag-sorting structure of the bag-making equipment provided in this application, it also includes a bag-body limiting component, which can move along the bag-body stacking direction and abut against the outer side of the packaging bag on the downstream side of the receiving part in the bag-body stacking direction.

[0025] Using the above technical solution, the bag limiting component abuts against the outer side of the downstream packaging bag on the receiving part in the bag stacking direction (i.e., the end face of the stacked group in the stacking direction). This provides support and limitation for the stacked packaging bags in the bag stacking direction, preventing the stacked group from tilting, scattering, or collapsing due to loss of constraint in the stacking direction. Since the bag limiting component can move along the bag stacking direction, as new packaging bags are continuously stacked into the receiving part, the stacked group grows continuously in the stacking direction. The bag limiting component can synchronously and dynamically retract outwards along the stacking direction, always maintaining contact with the outer side of the downstream packaging bag. This ensures that the end of the stacked group is always effectively supported throughout the collection process, preventing the stacked group from becoming unstable or even collapsing due to loss of constraint at the end. This provides a continuous and reliable guarantee for the stable formation of the stacked group.

[0026] According to the bag-sorting structure of the bag-making equipment provided in this application, the bag-body limiting component includes a limiting drive mechanism and a limiting plate disposed on the limiting drive mechanism. The end of the limiting plate extends toward the packaging bag on the receiving part to form a limiting part. When the packaging bags are stacked sequentially on the receiving part, the limiting drive mechanism moves the limiting plate along the bag stacking direction, and the limiting part continuously abuts against the outer wall of the packaging bag on the downstream side of the receiving part.

[0027] Using the above technical solution, the limiting drive mechanism actively drives the limiting plate to move along the bag stacking direction, and the limiting part extending from the end of the limiting plate continuously abuts against the outer wall of the downstream packaging bag. As packaging bags are continuously stacked, the stacked group grows along the stacking direction, and the limiting drive mechanism drives the limiting plate to move outward synchronously in real time. This ensures that the limiting part remains in close contact with the outer wall of the downstream packaging bag throughout the growth of the stacked group, neither hindering the smooth stacking of new packaging bags nor hindering the surface contact support and limiting the stacked group at the end, preventing the stacked group from tilting or collapsing in the stacking direction due to loss of restraint at the end. Furthermore, the limiting part abuts against the outer wall of the packaging bag in a surface contact manner, resulting in a large contact area and stable support, which helps the stacked group maintain a good overall shape throughout the collection process.

[0028] According to the bag-making equipment provided in this application, the bag-body limiting component further includes a first limiting adjustment mechanism. The first limiting adjustment mechanism has a first adjusting end that can move along the alignment direction. A limiting plate is driven to the first adjusting end. The first adjusting end can adjust the first stop position of the limiting plate relative to the receiving part in the alignment direction. And / or, the bag-body limiting component further includes a second limiting adjustment mechanism. The second limiting adjustment mechanism has a second adjusting end that can move along the bag-body stacking direction. A limiting plate is driven to the second adjusting end. The second adjusting end can adjust the second stop position of the limiting plate relative to the receiving part in the bag-body stacking direction.

[0029] Using the above technical solution, the first limit adjustment mechanism can adjust the initial stop position (first stop position) of the limit plate in the alignment direction, so that the position of the limit plate in the alignment direction can be adapted to the position of the outer wall of the packaging bag with different width specifications. This ensures that the limit part is accurately aligned with the center of the outer wall of the stacking group, and can avoid the limit part from deviating from its working position due to changes in width specifications. Moreover, it can conveniently and quickly change the size of packaging bags with different widths.

[0030] In addition, the second limiting adjustment mechanism can adjust the initial stop position (second stop position) of the limiting plate in the stacking direction of the bag body, so that the initial position of the limiting plate in the stacking direction can be adapted to the initial stacking position of packaging bags of different thicknesses, or it can also be adapted to packaging bag groups of different stacking numbers, so that the limiting plate can accurately abut the end of the stacking group after the first bag is stacked, and will not lose restraint in the initial stage of stacking due to the position being too far away, or will not be unable to enter the receiving part normally due to the position being too close.

[0031] Therefore, the above solution enables the position of the limiting plate to be adjustable in two dimensions, allowing the limiting components to accurately match the limiting requirements of different specifications of packaging bags in both the alignment direction and the stacking direction. This adapts to packaging bags of different widths, thicknesses, and stacking quantities. When changing specifications, only the corresponding mechanism needs to be adjusted without replacing any parts, effectively improving the equipment's specification changing efficiency and multi-specification adaptability.

[0032] According to the bag-making equipment provided in this application, the bag-body limiting component includes a first limiting adjustment mechanism and a second limiting adjustment mechanism; wherein, the limiting drive mechanism is disposed on the second adjusting end, and the second limiting adjustment mechanism is disposed on the first adjusting end.

[0033] Using the above technical solution, the second limit adjustment mechanism is installed on the first adjustment end of the first limit adjustment mechanism, and the limit drive mechanism is installed on the second adjustment end of the second limit adjustment mechanism. During adjustment, power is sequentially transmitted through the first adjustment end, the second limit adjustment mechanism, the second adjustment end, the limit drive mechanism, and the limit plate to adjust the position of the limit plate. Alternatively, power can be sequentially transmitted through the second adjustment end, the limit drive mechanism, and the limit plate to adjust the position of the limit plate. In this structure, when adjusting the first limit adjustment mechanism, its first adjustment end drives the second limit adjustment mechanism, the limit drive mechanism, and the limit plate as a whole to move in the alignment direction, completing the position adjustment in the alignment direction. When adjusting the second limit adjustment mechanism, its second adjustment end drives the limit drive mechanism and the limit plate as a whole to move in the bag stacking direction, completing the initial position adjustment in the stacking direction. Furthermore, the adjustments in the two directions are independent and do not interfere with each other. During production, the limit drive mechanism drives the limit plate to dynamically follow the stacking direction based on two-dimensional positioning, achieving continuous limiting of the end of the stacked group. The three functional modules are integrated in series and share the same limit plate as the final actuator. The structure has a high degree of integration, fewer parts, and a compact overall layout, which helps to reduce the processing and manufacturing costs and assembly difficulty of the equipment, while also simplifying the operation process of changing gauges and adjusting.

[0034] According to the bag-sorting structure of the bag-making equipment provided in this application, both the first limit adjustment mechanism and the second limit adjustment mechanism include a drive motor and a lead screw and nut mechanism. The lead screw of the lead screw and nut mechanism is synchronously rotatably connected to the output shaft of the drive motor. The first adjustment end or the second adjustment end is a moving block with internal threads threaded onto the lead screw. Alternatively, both the first limit adjustment mechanism and the second limit adjustment mechanism include a drive motor and a slide rail and slider mechanism. The slide rails of the slide rail and slider mechanism extend along the alignment direction or the bag stacking direction, and the first adjustment end or the second adjustment end is a slider that is slidably disposed on the slide rail and is connected to the drive motor for transmission.

[0035] When the above technical solution is adopted, the screw and nut mechanism drives the screw to rotate, and the moving block with internal thread moves precisely in a straight line along the screw axis under the screw helical transmission. The screw and nut mechanism has the characteristics of high transmission accuracy and good self-locking. After it is in place, it can maintain its position without the need for an additional locking device. It has high adjustment accuracy and positioning retention capability, which helps to reduce manual operation and shorten the gauge change time.

[0036] When using a slide rail and slider mechanism, the slide rail extends along the adjustment direction and provides linear guidance. The drive motor drives the slider to slide along the slide rail via a transmission mechanism. The slide rail and slider mechanism offers high guiding accuracy, smooth movement, and a large stroke range, making it suitable for applications with large adjustment strokes, especially when the width or initial position of the packaging bag varies significantly, thus meeting the needs for large stroke adjustment. Both solutions facilitate quick gauge changes and reduce limit position deviations caused by human error.

[0037] According to the bag-making equipment provided in this application, the bag-sliding structure includes at least one pair of bag-body limiting members arranged opposite to each other in the alignment direction. Each pair of bag-body limiting members is located on both sides of the receiving part in the alignment direction, and the limiting part of each bag-body limiting member abuts against the corresponding side of the outer side of the packaging bag on the downstream side of the receiving part.

[0038] Using the above technical solution, paired bag-body limiting components are respectively arranged on both sides of the receiving part in the alignment direction. The limiting part of each limiting component abuts against the corresponding side of the outer wall of the downstream packaging bag, forming support on both sides of the alignment direction at the end of the stacking group, thus constraining it with double-sided limiting. Compared with single-sided limiting, double-sided limiting not only constrains the end of the stacking group to prevent tilting in the stacking direction, but also constrains the lateral displacement of the packaging bag at the end of the stacking group in the alignment direction. This effectively prevents the end of the stacking group from tilting in the alignment direction, further improving the overall stability of the stacking group during the collection process. Especially when the end of the stacking group is subjected to periodic impacts during high-speed bag stacking, the stability of double-sided support is better, which is conducive to maintaining the good shape of the stacking group under high-speed production conditions and creating better conditions for subsequent transfer processes.

[0039] According to the bag-collecting structure of the bag-making equipment provided in this application, the bag receiving component collects the packaging bags in an upright position on the receiving part; and the receiving part is also provided with a receiving recess, in which the bottom of each packaging bag is received; and the width of the receiving recess in the alignment direction is adjustable.

[0040] With the above technical solution, the receiving recess is set on the receiving part. When the packaging bag is stacked in an upright position, its bottom is embedded in the receiving recess. The two side walls of the recess in the alignment direction form a slot-like constraint on the corresponding two side edges of the bottom of the packaging bag. This can restrict the lateral movement of the bottom edge of the packaging bag in the alignment direction from both sides at the bottom level, preventing the bottom of the upright stacked packaging bags from sliding due to uneven force or vibration, so that the bottom edges of the entire stack of packaging bags are automatically aligned.

[0041] In addition, the confinement of the bottom by the receiving recess and the active pushing of the bag body alignment component against the upper side edge work together to form a full-height alignment constraint for each packaging bag from bottom to top, so that the stacked packaging bags remain neat in all sections of the height direction, resulting in higher stacking quality.

[0042] In addition, the width of the receiving recess in the alignment direction is adjustable, which can accommodate the bottom size of packaging bags of different widths. This ensures that the bottom of packaging bags of different sizes can be reliably received and constrained by the recess, further improving the equipment's adaptability to packaging bags of multiple sizes.

[0043] According to the bag-making equipment provided in this application, the bag-making equipment also includes a handle-arranging component, which is disposed on the upstream side of the inlet of the bag-receiving component; wherein, the handle-arranging component has an extension extending toward the packaging bag, and the extension can abut against the corresponding side wall of the packaging bag on the upstream side of the inlet of the bag-receiving component.

[0044] Using the above technical solution, the handle organizing component is located upstream of the bag receiving component inlet, and its extension abuts against the corresponding side wall of the packaging bag before the bag reaches the receiving component inlet. For paper bags with handles (such as rope-type or buckle-type handles), the handles are prone to deflection, flipping, or outward extension due to airflow and inertia during transport. If the handles are not properly organized before stacking, they will occupy extra space and cause stacking deviations after stacking, and may also interfere with some components in the equipment during subsequent handling. This application utilizes the pre-abutment of the extension against the side wall to gather and organize deflected handles or outward side walls, allowing the packaging bag to enter the receiving component with flat side walls and properly organized handles, which can reduce stacking deviations or handling interference caused by abnormal handle conditions.

[0045] In addition, the pre-sorting of the handles before the entrance and the active alignment of the bag body alignment components inside the receiving section are two sorting processes. The two processes work together to eliminate deviations from different sources before and during stacking, which helps to further improve the neatness and quality of stacking, especially for high-end paper bags with handles.

[0046] According to the bag sorting structure of the bag making equipment provided in this application, the handle sorting component has a plate-like structure and the extension is a bent portion formed by bending one end of the handle sorting component; furthermore, the handle sorting component can be positioned relative to the receiving portion in the bag stacking direction and / or the entry direction.

[0047] Using the above technical solution, the handle organizing component adopts a plate-like structure. The extension is formed by bending one end of the plate to form a bent part. The bent part can form a surface contact with the side wall of the packaging bag, with a large contact area. It can evenly abut against a large area on the side wall, avoiding concentrated contact that could cause local crease damage to the side wall of the bag. At the same time, the plate-like bent structure is easy to process and manufacture, has low cost, good structural strength, and is suitable for continuous pressure from the side wall of the packaging bag during the production cycle without deformation.

[0048] In addition, the position of the handle organizing component in the bag stacking direction and / or entry direction is adjustable, so that the specific working position of the bending part can be precisely adapted to the handle position height and entry direction stroke of different sizes of packaging bags, ensuring that the bending part accurately contacts the handle area of ​​each size of packaging bag. When changing sizes, it can be adjusted to the correct position and continue to be used without replacing the entire handle organizing component. The operation is convenient and helps to shorten the size change time.

[0049] According to the bag sorting structure of the bag making equipment provided in this application, it also includes a bag transfer component disposed on the frame downstream of the bag receiving component. The bag transfer component includes a bag holding mechanism that can move between the receiving part and the next station. The bag holding mechanism is used to transfer multiple packaging bags stacked on the receiving part to the next station.

[0050] Using the above technical solution, the bag conveying component is integrated into the bag sorting structure of the bag making equipment, set on the frame and located downstream of the bag receiving component. Its bag holding mechanism can reciprocate between the receiving part and the next workstation. When the number of packaging bags stacked on the receiving part reaches a predetermined number, and the stacking and alignment are completed, the bag holding mechanism moves directly to the receiving part to hold the entire stack of packaging bags, and then transfers the entire stack of packaging bags to the next workstation (such as the bundling workstation, boxing workstation, etc.) and releases them.

[0051] In addition, the three processes of bag collection, alignment and transfer are carried out in a continuous automated operation within the bag sorting structure, eliminating the need for manual handling of stacks of packaging bags, effectively reducing the intensity of manual labor. At the same time, the automated transfer has a more stable cycle and faster speed, which helps to improve the production efficiency and automation level of the entire production line, and also reduces the problem of scattered stacks caused by improper operation during manual handling.

[0052] According to the bag-sorting structure of the bag-making equipment provided in this application, the bag-transferring component further includes a swing mechanism and a transfer drive mechanism; wherein, the transfer drive mechanism is fixedly connected to the frame, one end of the swing mechanism is drivenly connected to the drive end of the transfer drive mechanism, and the bag-holding mechanism is drivenly connected to the other end of the swing mechanism. The transfer drive mechanism drives the swing mechanism to swing so as to move the bag-holding mechanism between the receiving part and the next station.

[0053] By adopting the above technical solution, the transfer drive mechanism is fixedly connected to the frame and does not move with the swing mechanism and the bag holding mechanism, which reduces the total mass of the moving parts, helps to reduce the inertia during reciprocating transfer, and enables the transfer action to start and stop more quickly, thereby increasing the transfer cycle speed.

[0054] In addition, one end of the swing mechanism is connected to the drive end of the transfer drive mechanism, and the other end is connected to the bag holding mechanism. When the transfer drive mechanism drives the swing mechanism to swing, the bag holding mechanism reciprocates along an arc or compound trajectory between the receiving part and the next workstation, completing the transfer of the entire stack of packaging bags. The swing transmission mechanism has a simple structure, a fixed and repeatable motion trajectory, does not require a complex linear guide system, has high mechanical reliability, and is easy to maintain. Attached Figure Description

[0055] Figure 1 A three-dimensional structural diagram of the bag sorting structure of the bag making equipment provided in an embodiment of this utility model;

[0056] Figure 2 A three-dimensional structural diagram of the bag alignment component in the bag sorting structure of the bag making equipment provided in this embodiment of the utility model;

[0057] Figure 3 A three-dimensional structural diagram of the bag body limiting component in the bag sorting structure of the bag making equipment provided in this embodiment of the utility model;

[0058] Figure 4 A three-dimensional structural schematic diagram of the bag body limiting component in the bag sorting structure of the bag making equipment provided in this embodiment of the utility model;

[0059] Figure 5 The three-dimensional structural diagram of the bag-sorting structure of the bag-making equipment provided in the embodiment of this utility model includes a bag-moving component.

[0060] Explanation of reference numerals in the attached figures:

[0061] 1. Rack;

[0062] 10. Bag body receiving component; 100. Receiving part; 110. Receiving recess;

[0063] 20. Bag alignment component; 200. Alignment end; 201. First alignment component; 202. Second alignment component; 210. Alignment drive mechanism; 220. Pushing component; 230. Alignment adjustment mechanism;

[0064] 30. Bag body limiting component; 301. Pushing mechanism; 300. Limiting drive mechanism; 310. Limiting plate; 320. First limiting adjustment mechanism; 321. First adjusting end; 330. Second limiting adjustment mechanism; 331. Second adjusting end;

[0065] 40. Handle arrangement components;

[0066] 50. Bag transfer component; 510. Bag holding mechanism; 520. Swinging mechanism; 521. Active swing arm; 522. Intermediate link assembly; 523. Slider assembly; 530. Transfer drive mechanism. Detailed Implementation

[0067] To address the problems of uneven edges, poor stacking quality, and reduced efficiency of subsequent processes in existing packaging bag stacking and collection processes, this application provides a bag sorting structure for a bag-making equipment. By setting a bag receiving component and a bag alignment component on the frame of the bag-making equipment, the alignment end is used to align the side edges of the packaging bags during the stacking process, making the side edges of the stacked packaging bags neat and consistent, which is conducive to the efficient and smooth execution of subsequent processes such as holding, bundling, and packing.

[0068] It should be understood that this embodiment does not limit the specific type of bag-making equipment and can be adapted to various bag-making equipment such as vertical paper bag making equipment, plastic bag making equipment, and woven bag making equipment; it also does not limit the specific material and size specifications of the packaging bags, which can be various packaging bags such as paper handle bags, film bags, and woven bags. This embodiment uses vertical paper bag making equipment and paper handle bags as examples for illustration.

[0069] To more clearly illustrate the solution of this embodiment, examples are provided below in conjunction with the accompanying drawings.

[0070] like Figure 1 As shown, the bag-sorting structure of the bag-making equipment provided in this embodiment includes a bag-receiving component 10 and at least one bag-aligning component 20 disposed on the frame 1 of the bag-making equipment. The bag-receiving component 10 has a receiving portion 100, which is used for receiving along the bag stacking direction (see...). Figure 1The receiving part 100 receives packaging bags sequentially from the bag-making equipment in the direction L shown. The packaging bags enter one by one along the bag stacking direction and are stacked on the receiving part 100, gradually forming a stacked group. The bag alignment component 20 is provided on a corresponding side of the receiving part 100. The side of the receiving part 100 close to the receiving part 100 has an alignment end 200. The alignment end 200 can abut against the corresponding edge of the packaging bag on the receiving part 100 in an alignment direction perpendicular to the bag stacking direction to align and straighten the packaging bags during the stacking process and correct the misalignment of the side edges of each packaging bag caused by the drop deviation.

[0071] It should be understood that the number and placement of the bag alignment components 20 are not limited. One bag alignment component 20 can be used, or multiple bag alignment components 20 can be used to align and constrain different side edges or different height positions of the packaging bags. The bag sorting structure provided in this embodiment continuously aligns and organizes the side edges during the stacking process of the packaging bags, ensuring that the corresponding side edges of each packaging bag in the stack remain neat and consistent. This facilitates precise positioning and stable operation of the entire stack of packaging bags in subsequent processes such as holding, transferring, and bundling.

[0072] Furthermore, this embodiment does not limit the specific structure and arrangement of the bag receiving component 10 and the bag alignment component 20.

[0073] In one example, the bag receiving component 10 can be a platform-type receiving frame fixedly installed on the bag making equipment frame 1, with its receiving portion 100 being a horizontally extending platform surface. Packaging bags enter sequentially along the horizontal direction as the bag stacking direction and are stacked upright on the platform surface. The bag alignment component 20 can be a baffle assembly fixedly installed on the frame 1 on one side of the receiving portion 100, with the alignment end 200 being the end face of the baffle assembly facing the receiving portion 100. The bag alignment component 20 is fixed to the frame 1 by bolts, and the distance between the alignment end 200 and the side of the receiving portion 100 is preset according to the width of the packaging bag.

[0074] During operation, packaging bags are stacked sequentially on the receiving part 100, with their side edges gradually approaching the alignment end 200. Side edges that exceed the alignment reference are blocked by the alignment end 200 and pushed back to the alignment position. Ultimately, the side edges of the entire stack of packaging bags remain in contact with the alignment end 200, achieving neat alignment. This solution is simple in structure, low in cost, and suitable for low-speed production lines with small bag dropping deviations.

[0075] In another example, the bag receiving component 10 can also be configured as a receiving mechanism that extends and retracts along the stacking direction of the bags. Its receiving part 100 consists of multiple receiving arms arranged along the stacking direction. The spacing between the receiving arms can be adjusted according to the thickness and quantity of the packaging bags, so that the bottom of the packaging bags can be precisely embedded in the gap between adjacent receiving arms and stacked upright. The bag alignment component 20 can be an elastic limiting member installed on the side of the receiving arm, and the alignment end 200 is the elastic end face of the elastic limiting member facing the side edge of the packaging bag. The elastic limiting member is connected to the side of the receiving arm by a snap fastener. The elastic end face protrudes slightly inward in its natural state, so that it always maintains a certain elastic pressure on the side edge of the packaging bag entering the receiving part 100.

[0076] During operation, when the packaging bag is stacked into the gap between adjacent receiving arms, the elastic end face can adaptively deform and fit to flexibly abut against the side edge of the packaging bag, and continuously constrain the position of the side edge in the alignment direction through elastic force.

[0077] In another example, the bag-aligning structure may include multiple bag alignment components 20, such as two or three, with the alignment end 200 of each bag alignment component 20 acting on different side edges or different height positions of the packaging bag on the receiving part 100. Specifically, one bag alignment component 20 may be provided on each side of the alignment direction, with the alignment ends 200 on both sides abutting against the width direction of the packaging bag (see...). Figures 1 to 5 The two sides of the direction H) form a double constraint on the width direction; of course, it is possible to set the bag body alignment component 20 on only one side of the width direction of the packaging bag, and set the baffle or other structure on the other side.

[0078] In this example, a bag alignment component 20 can be set at different positions along the height of the bag, for example, to constrain the side edges at the middle height and the bag opening height respectively. During operation, multiple alignment ends 200 simultaneously constrain the side edges of the packaging bag from multiple directions, achieving multi-dimensional alignment constraints on the packaging bag during stacking.

[0079] In other alternative solutions, when the alignment end 200 of the bag body alignment component 20 abuts against the corresponding edge of the packaging bag on the receiving part in an alignment direction perpendicular to the bag body stacking direction, a drive motor can be used in conjunction with a swing arm to achieve the arc movement of the alignment end 200 to push against the corresponding edge of the packaging bag.

[0080] Based on the bag-sorting structure of the bag-making equipment provided in the above embodiments, such as Figure 1 and Figure 2As shown, the bag alignment component 20 includes an alignment drive mechanism 210 and a pushing member 220 disposed at the drive end of the alignment drive mechanism 210. The alignment end 200 is the end face of the pushing member 220 facing the corresponding edge of the packaging bag. The alignment drive mechanism 210 drives the pushing member 220 to reciprocate along the alignment direction and switches between an extended position and an initial position when pushing against the corresponding edge of the packaging bag. The alignment end 200 has a planar shape parallel to the stacking direction of the bags.

[0081] Specifically, in this embodiment, the specific structure of the alignment drive mechanism 210 and the pushing member 220 is not limited. The alignment drive mechanism 210 drives the pushing member 220 to reciprocate along the alignment direction. When in the extended position, the planar alignment end 200 of the pushing member 220 contacts the side edge surface of the packaging bag, applying a uniform pushing force along the alignment direction to align the side edge to a predetermined position. After the pushing is completed, the drive mechanism drives the pushing member 220 to return to the initial position to allow subsequent packaging bags to enter. Since the alignment end 200 is a planar shape parallel to the stacking direction of the bags, it can simultaneously contact and push the side edges of multiple stacked packaging bags. A single push can align the corresponding side edges of the entire stack of packaging bags, resulting in high alignment efficiency and good effect.

[0082] In one example, the alignment drive mechanism 210 can be a cylinder, the cylinder body of which is fixedly mounted on the frame 1. The piston rod of the cylinder extends along the alignment direction, and the pushing member 220 is fixed to the end of the piston rod by a connecting block. The pushing member 220 can be a flat plate, and its end face facing the side edge of the packaging bag on the receiving part 100 is the alignment end 200. The plane extension direction of the alignment end 200 is parallel to the stacking direction of the bag body, and the plane width (the dimension in the stacking direction) is not less than the sum of the stacking thickness of each packaging bag in the current stacking group on the receiving part 100, so as to ensure that one pushing action can cover the corresponding side edge of all stacked packaging bags.

[0083] During operation, after each bag is produced and stacked into the receiving part 100, the control system of the whole machine can trigger the cylinder to drive the piston rod to extend, and the pushing component 220 moves to the extended position. At the same time, the plane alignment end 200 contacts and pushes the corresponding side edges of the stacked bags, aligning the side edges to the reference defined by the extended position. After the pushing is completed, the cylinder drives the piston rod to retract, and the pushing component 220 returns to the initial position, making room for the next bag to be stacked.

[0084] This design features rapid cylinder-driven response and stable thrust. The wide-plane alignment end 200 can push the entire stack of packaging bags against its side edges in one go, synchronizing the alignment action with the bag ejection cycle. This is suitable for the active alignment requirements of medium- and high-speed bag-making equipment. Compared to passive limiting baffles, the active-driven pushing component 220 can apply active pushing force to flexible packaging bags, ensuring effective alignment even with significant drop deviations or slight deformation of the bags themselves. This results in high alignment reliability and a wide range of applications.

[0085] In another example, the alignment drive mechanism 210 can be an electric linear module, driven by a servo motor via a lead screw to move a slide table along the alignment direction. The pushing member 220 is fixedly mounted on the slide table of the linear module. The pushing member 220 can be an L-shaped plate, with its horizontal side fixed to the slide table and its vertical end face serving as the alignment end 200, which is a planar shape parallel to the bag stacking direction. The servo motor of the linear module can be equipped with an encoder to achieve closed-loop position control, precisely setting the stop coordinates of the pushing member 220 in the extended position, and controlling the magnitude of the pushing force through a motor torque limiting function.

[0086] During operation, the control system drives the linear module to precisely move the pushing component 220 to the extended position according to the preset parameters, maintains it for a preset time, and then returns it to the initial position, completing a precise alignment. When changing specifications, it is only necessary to modify the position parameters of the corresponding specifications in the control system for automatic adaptation, without the need for manual adjustment of mechanical parts.

[0087] This solution offers high positioning accuracy, precise control of pushing force, and convenient gauge changes, making it more suitable for high-end packaging bag production with high requirements for stacking alignment accuracy, as well as intelligent production lines with frequent switching between multiple specifications.

[0088] In another example, the alignment drive mechanism 210 can be a mechanism in which a rotary motor drives a pushing member 220 to reciprocate through a crank-connecting rod mechanism. The crank is fixed to the output shaft of the rotary motor, one end of the connecting rod is hinged to the crank, and the other end is hinged to the rear end of the pushing member 220. The pushing member 220 is constrained by a linear guide rail to perform linear reciprocating motion in the alignment direction. The rotary motor rotates continuously, driving the pushing member 220 to perform continuous reciprocating motion in the alignment direction through the crank-connecting rod mechanism. The pushing frequency of the pushing member 220 corresponds to the rotational speed of the rotary motor, and the pushing frequency can be adjusted by adjusting the rotational speed of the rotary motor to synchronize it with the bag output frequency of the bag making equipment. The alignment end 200 of the pushing member 220 has a planar shape parallel to the bag stacking direction.

[0089] During operation, the rotary motor rotates continuously, and the pushing component 220 repeatedly pushes the side edge of the packaging bag. Each push cycle aligns the side edge of the current stacked group. This design converts rotary drive into linear reciprocating motion using a crank-connecting rod mechanism, resulting in a simple structure, smooth movement, and high reliability.

[0090] Based on the bag sorting structure of the bag making equipment provided in the above embodiments, the bag body alignment component 20 further includes an alignment adjustment mechanism 230, an alignment drive mechanism 210 is disposed on the alignment adjustment mechanism 230, the position of the alignment adjustment mechanism 230 in the alignment direction is adjustable, and the alignment drive mechanism 210 and the push member 220 are linked to adjust the extension position of the alignment end 200 relative to the receiving part 100; or, the position of the drive end of the alignment drive mechanism 210 in the alignment direction is adjustable, and the push member 220 is driven to adjust the extension position of the alignment end 200 relative to the receiving part 100.

[0091] This embodiment does not limit the specific structure of the alignment adjustment mechanism 230. By adjusting the position of the alignment drive mechanism 210 as a whole in the alignment direction, or by adjusting the position of the drive end of the alignment drive mechanism 210, the position of the alignment end 200 of the pushing member 220 in the extended position can be changed, thereby adjusting the alignment reference position defined after the alignment end 200 pushes against the side edge of the packaging bag. When producing packaging bags of different widths, there is no need to change parts; only the adjustment mechanism needs to be adjusted for quick adaptation, which can effectively shorten the changeover adjustment time and improve the equipment's adaptability to the production of packaging bags of multiple specifications.

[0092] In one example, the alignment adjustment mechanism 230 may include a linear guide rail disposed on the frame 1 along the alignment direction and an adjustment slider that can slide along the linear guide rail. The alignment drive mechanism 210 is fixed to the adjustment slider by a mounting plate. The adjustment slider, together with the alignment drive mechanism 210 and the pushing member 220, can slide to any position along the linear guide rail in the alignment direction. The adjustment slider is locked at the target position on the linear guide rail by a locking nut. The linear guide rail may be provided with scale markings, indicating the corresponding adjustment position according to the width specifications of commonly used packaging bags, allowing operators to quickly locate the position according to the scale.

[0093] During operation, when changing gauges, loosen the locking nut, push the adjusting slider along the linear guide to the scale position corresponding to the new specification, and then tighten the locking nut. The alignment drive mechanism 210 and the pushing component 220 move to the new position as a whole, and the protruding position of the alignment end 200 is adapted to the new specification. This solution features a simple manual sliding adjustment structure, low cost, and easy-to-position scale markings, making it suitable for applications where gauge changes are infrequent but specification differences are significant.

[0094] In another example, the alignment adjustment mechanism 230 may include an adjustment motor and a lead screw and nut mechanism. The adjustment motor is fixed to the frame 1, the lead screw extends along the alignment direction and is synchronously connected to the output shaft of the adjustment motor, a threaded moving block is mounted on the lead screw, and the alignment drive mechanism 210 is fixed to the moving block. The control system of the whole machine drives the lead screw to rotate by controlling the forward and reverse rotation of the adjustment motor, so that the moving block drives the alignment drive mechanism 210 and the pushing member 220 to move together along the alignment direction to the target position. The self-locking property of the lead screw and nut mechanism allows the moving block to maintain its position stably without additional locking after it is in place.

[0095] During operation, when changing specifications, the control system inputs the new specification parameters, and the automatic drive adjustment motor adjusts the alignment drive mechanism 210 to the corresponding position, completing the automatic specification change without manual intervention of the mechanical parts. This solution offers high precision and efficiency in electric automated adjustment, making it suitable for intelligent production lines that frequently switch between multiple specifications and require precise alignment benchmarks. It can also be integrated with the production management system to automatically issue specification change parameters.

[0096] In another example, the position of the drive end of the alignment drive mechanism 210 in the alignment direction is adjustable. Specifically, this is achieved by setting a stroke adjustment mechanism: the stroke adjustment mechanism of the alignment drive mechanism 210 may include a stroke limiting screw disposed at the rear end of the pushing member 220. The stroke limiting screw is threaded into the mounting seat of the pushing member 220 along the alignment direction, and the end of the limiting screw abuts against the cylinder or fixed base of the alignment drive mechanism 210. By rotating the stroke limiting screw, the farthest position (i.e., the extended position) that the pushing member 220 can reach in the alignment direction is changed. The cylinder or fixed base of the alignment drive mechanism 210 does not move; only the extended termination position of the pushing member 220 is adjusted.

[0097] During operation, the travel limit screw is rotated to the position corresponding to the new specification and then locked. The alignment end 200 of the pushing component 220 stops at the newly set extension position during pushing, and the alignment reference is adjusted accordingly. Using this solution, the extension position is adjusted by using the travel limit screw without moving the entire alignment drive mechanism 210. The adjustment range is moderate, the operation is simple, and the cost is low. It is suitable for occasions with high requirements for structural compactness and small range of specification changes.

[0098] Based on the bag-making equipment's bag-sorting structure provided in the above embodiments, in other alternative embodiments of the bag alignment component 20, the bag alignment component 20 may also include a guide member (not shown), and the alignment end 200 is the end face of the guide member facing the corresponding edge of the packaging bag; wherein, the alignment end 200 has a planar shape that extends obliquely relative to the bag stacking direction, and the distance between the alignment end 200 and the corresponding edge of the packaging bag in the alignment direction gradually decreases from the inside of the receiving portion 100 to the outside.

[0099] This embodiment does not limit the specific structure of the guiding member. For example, the alignment end 200 of the guiding member can be in the shape of an inclined plane, forming a gradually narrowing guiding channel: when the packaging bag moves towards the receiving part 100 along the stacking direction of the bag body, its side edge first contacts the wider entrance end of the alignment end 200. As the packaging bag continues to move, the side edge is guided by the inclined surface of the alignment end 200 and gradually moves towards the alignment direction, and finally is guided to the alignment position when it reaches the receiving part 100. This passive guided alignment does not require active driving and can complete the alignment by relying on the movement of the packaging bag itself. It has a simple structure, requires no additional driving energy, and has high reliability, making it especially suitable for working conditions with small bag drop deviations.

[0100] In one example, the guiding component can be a flat guiding plate, mounted on the frame 1 by a fixed bracket. Its end face facing the corresponding edge of the packaging bag is an alignment end 200, which has a planar shape extending at an angle relative to the bag stacking direction. The inlet end of the guiding plate (located inside the receiving part 100, i.e., the packaging bag entry end) is relatively far from the side edge of the packaging bag in the alignment direction (e.g., 1.5 to 2 times the maximum bag drop deviation), while the outlet end of the guiding plate (located outside the receiving part 100, i.e., the stacking end direction) is zero or nearly zero from the side edge of the packaging bag in the alignment direction (i.e., the alignment reference position). The guiding plate as a whole forms a gradually narrowing wedge-shaped guiding channel. The fixed bracket is bolted to the frame 1, and the tilt angle of the guiding plate is determined based on the bag drop deviation range and the stacking channel length.

[0101] During operation, as the packaging bag falls into the receiving section 100 along the stacking direction, its side edge enters the guide channel entrance. As the packaging bag continues to move along the stacking direction, the inclined surface continuously applies an alignment-direction force to the side edge of the packaging bag, guiding and retracting the side edge until it reaches the exit end, where it has been guided to the alignment reference position. Using this method, the flat guide plate requires no drive, resulting in the simplest structure. Alignment is achieved entirely through the movement of the packaging bag itself, leading to lower costs.

[0102] In another example, the guiding component can be a curved guide plate, with its alignment end 200 having a concave curved shape. The distance between the curved surface and the side edge of the packaging bag gradually decreases from the inner side of the receiving part 100 to the outer side in the alignment direction. The curvature of the curved surface gradually increases along the stacking direction (i.e., the curved surface becomes steeper closer to the outlet). The curvature of the inlet section is small, resulting in a small guiding force on the side edge, forming a gentle guiding inlet; the curvature of the outlet section is large, resulting in a gradually increasing guiding force on the side edge, allowing the side edge to smoothly transition to the alignment position. The curved guide plate is fixed to the frame 1 by a mounting bracket, and the installation position is pre-adjusted and fixed according to the packaging bag specifications.

[0103] During operation, the side edge of the packaging bag slides naturally into the concave arc surface of the arc guide plate. The gradual curvature of the arc surface ensures a smooth increase in guiding force without abrupt impact. The side edge gradually aligns to the exit position in a smooth and continuous manner.

[0104] Using this approach, the guiding process with curved surfaces is gentler and less impactful, resulting in less frictional damage to the side edges of the packaging bag.

[0105] In another example, the guiding component can consist of multiple inclined guide plates spaced apart along the bag stacking direction. Each guide plate has the same inclination angle to the bag stacking direction. The end faces of each guide plate facing the side edge of the packaging bag collectively form a segmented inclined alignment end 200. From the inside of the receiving portion 100 to the outside, the alignment direction of each guide plate's end face gradually approaches the side edge of the packaging bag, creating a stepped, gradually receding guiding effect. Gaps can be left between adjacent guide plates to allow the side edges carried by the airflow to escape during bag drop, thus preventing airflow buildup in the guiding channel and subsequent lateral drift of the packaging bag. All guide plates can be mounted together on an adjustable mounting plate, which is fixed to the frame 1 by an adjustment mechanism.

[0106] During operation, the side edges of the packaging bag are guided sequentially by the segmented guide plates, gradually converging to the aligned position. The airflow in each gap escapes smoothly, reducing airflow interference with the packaging bag. This design, combining segmented guidance with airflow escape, provides better alignment for thin packaging bags (such as lightweight paper bags and film bags) during high-speed bag dropping.

[0107] Based on the bag-making equipment provided in the above embodiments, the bag alignment component 20 further includes a guide adjustment mechanism (not shown). The guide component is disposed on the guide adjustment mechanism. The position of the guide adjustment mechanism in the alignment direction is adjustable, and the guide component is driven to adjust the position of the alignment end 200 relative to the receiving part 100 in the alignment direction.

[0108] This embodiment does not limit the specific structure of the guiding adjustment mechanism. The guiding adjustment mechanism can adjust the position of the guiding component in the alignment direction, thereby changing the effective width of the guiding channel in the alignment direction to accommodate packaging bags of different widths. When switching specifications, the guiding position can be quickly adjusted by adjusting the guiding adjustment mechanism, which is convenient to operate and highly adaptable.

[0109] In one example, the guide adjustment mechanism may include a mounting base fixed to the frame 1 and an oblong adjustment hole provided on the mounting base. The guide member is fixed to the mounting base by bolts passing through the oblong adjustment hole, which extends along the alignment direction. After the bolts are loosened, the guide member can slide along the oblong adjustment hole to the target position in the alignment direction and then be relocked, thereby realizing the position adjustment of the guide member in the alignment direction. The mounting base is provided with a scale for the alignment direction, which allows the operator to quickly determine the adjustment amount according to the width specification of the packaging bag.

[0110] During operation, before changing the specification, loosen the bolts, move the guide component along the oblong adjustment hole to the scale position corresponding to the new specification, and then lock it. The alignment reference position at the end of the guide channel is then adjusted to match the width of the new specification packaging bag. In another example, the guide adjustment mechanism includes an adjustment screw extending along the alignment direction and a threaded sleeve that threads with the adjustment screw. The two ends of the adjustment screw are supported on the fixed plate of the frame 1 by bearings. The guide component is fixed to the threaded sleeve by a connecting block. Rotating the adjustment screw can drive the threaded sleeve and the guide component to move along the alignment direction. A handwheel is provided at the end of the adjustment screw for easy manual rotation by the operator. During adjustment, the operator rotates the handwheel, and the guide component moves precisely to the target position along the alignment direction, adapting the width of the guide channel to the new specification.

[0111] In another example, the guiding adjustment mechanism may include an electric push rod and a linear guide rail. The guiding component is fixed to the telescopic end of the electric push rod, which is integrally mounted on the slider of the linear guide rail. The linear guide rail is set on the frame 1 along the alignment direction, constraining the guiding component and the electric push rod to move only along the alignment direction. The control system calculates the required adjustment amount of the guiding component based on the packaging bag width specifications set in the production task and automatically drives the electric push rod to the target position without manual operation.

[0112] During operation, upon receiving a specification change command, the control system automatically drives the guiding and adjusting mechanism to move the guiding component to the corresponding position of the new specification, completing the automatic specification change adjustment with high efficiency and precision. This fully automatic guiding position adjustment is more suitable for automated intelligent production lines with frequent switching between multiple specifications. Integrated with the bag-making equipment control system, it can achieve one-click automatic specification change.

[0113] Based on the bag-feeding structure of the bag-making equipment provided in the above embodiments, the bag receiving component 10 receives the packaging bag with the packaging bag standing upright on the receiving part 100; and the alignment direction is parallel to the width direction of the packaging bag, and the alignment end 200 of each bag alignment component 20 abuts against the corresponding width edge of the packaging bag.

[0114] Specifically, the packaging bags are received upright by the receiving part 100. On the one hand, this saves the horizontal floor space of the receiving part 100, allowing more packaging bags to be stacked in a limited space. On the other hand, the width-direction side edges of the packaging bags (i.e., the two ends of the bag body in the width direction) are more prone to misalignment when the packaging bags are upright. The alignment end 200 of the bag body alignment part 20 pushes and aligns the width edges of the packaging bags along the width direction, keeping the multiple upright stacked packaging bags aligned in the width direction. The entire stack of packaging bags is neatly arranged, making it easier to handle and move them later.

[0115] In one example, the bag receiving component 10 may include a horizontally extending receiving platform and a back plate disposed on the side of the receiving platform along the bag stacking direction. The receiving part 100 is jointly formed by the upper surface of the receiving platform and the side of the back plate. The bottom of the packaging bag is supported on the upper surface of the receiving platform, and the back plate contacts one side of the packaging bag in the height direction, constraining the packaging bag to stand upright and not tilt in the height direction. The bag alignment component 20 is fixed to the frame 1 by a mounting bracket and is disposed on one side of the receiving platform. The alignment direction is parallel to the width direction of the packaging bag, and the alignment end 200 faces the width edge of the packaging bag stacked on the receiving platform, applying a pushing force to the width edge in the width direction to correct the stacking deviation of the packaging bag in the width direction. During operation, after the packaging bag is stacked upright into the receiving part 100, the alignment end 200 pushes and aligns its width edge, so that the width edges of each packaging bag are consistent in the width direction. With this solution, the back panel can provide stable support for the upright posture of the packaging bag. The alignment in the width direction is directly aimed at the direction in which deviation is most likely to occur when stacking upright. The alignment is highly targeted and is the most commonly used alignment configuration in upright stacking scenarios.

[0116] In another example, the receiving portion 100 of the bag receiving component 10 can be a groove-shaped structure. The groove extends along the stacking direction of the bags, and the depth and bottom width of the groove are similar to the dimensions of the bottom of the packaging bag. The bottom of the packaging bag is embedded in the groove and stacked upright. The two side walls of the groove constrain the bottom of the packaging bag in the width direction, preventing the bottom from slipping in the width direction. At the same time, the bottom of the groove supports the bottom edge of the packaging bag, preventing the packaging bag from tipping to the sides. The bag alignment component 20 is located on the upper side of the groove. The alignment end 200 pushes and aligns the width edge of the packaging bag (in the upper region of the height direction) in the width direction, which works in conjunction with the groove's constraint on the bottom width to form a full-height width direction alignment constraint from the bottom to the top. During operation, the bottom of the packaging bag is embedded in the groove and stands stably upright. The alignment end 200 provides supplementary alignment to the upper width edge. This double constraint ensures that the entire stack of packaging bags remains precisely aligned in the width direction.

[0117] It should be understood that when the packaging bag enters the receiving part 100 in an upright position, it can be inserted from top to bottom or pushed in from one side. This application does not make this a unique requirement.

[0118] Based on the bag-sorting structure of the bag-making equipment provided in the above embodiments, such as Figure 1 and Figure 2 As shown, at least one bag alignment component 20 may include a first alignment component 201 and a second alignment component 202, which are spaced apart on the frame 1 along a height direction perpendicular to the bag stacking direction; wherein, the alignment end 200 of the first alignment component 201 abuts against the middle position of the corresponding side edge of the packaging bag in the height direction in the alignment direction; and the alignment end 200 of the second alignment component 202 abuts against the corresponding side edge of the packaging bag near the bag opening in the height direction in the alignment direction.

[0119] Specifically, this embodiment does not limit the specific structure of the first alignment component 201 and the second alignment component 202, nor the installation spacing in the height direction. The alignment end 200 of the first alignment component 201 abuts against the middle position in the height direction of the packaging bag, and the alignment end 200 of the second alignment component 202 abuts against the position near the bag opening in the height direction of the packaging bag. The two alignment ends 200 act on different height areas of the side edge of the bag body respectively. For packaging bags placed upright, the bag opening is often more prone to lateral deviation due to the bag opening not being sealed or the bag itself being relatively light. By applying alignment forces at the middle position and the bag opening position respectively, multi-point alignment of the side edge of the bag body can be achieved, and the alignment effect is more comprehensive and reliable.

[0120] In one example, such as Figure 1 As shown, both the first alignment component 201 and the second alignment component 202 can be cylinder-driven pushing components 220 assemblies. They are both fixed to the frame 1 by their respective mounting brackets and are spaced apart on the same side of the receiving portion 100 in the height direction. The installation height of the first alignment component 201 corresponds to the middle position in the height direction of the packaging bag, and its alignment end 200 acts on the middle height region of the side edge of the packaging bag. The installation height of the second alignment component 202 corresponds to the position of the packaging bag near the bag opening, and its alignment end 200 acts on the bag opening height region of the side edge of the packaging bag. Both are driven by the same air path and their actions are synchronized.

[0121] During operation, the two alignment components move synchronously, and the two alignment ends 200 simultaneously push against the same side edge of the packaging bag at their respective height positions, achieving synchronous constraint on the side edges at two height points, namely the middle and the bag opening, effectively preventing the possible deviation in the height of the bag opening when only single-point alignment is used.

[0122] In another example, the first alignment component 201 and the second alignment component 202 can be controlled by independent air circuits or drive systems, operating independently and with different action sequences and pushing forces. The first alignment component 201 can use a large-diameter cylinder to provide greater thrust, used to stably push the heavier, thicker area in the middle of the packaging bag; the second alignment component 202 can use a small-diameter cylinder to provide less thrust, with a faster response speed, specifically for quickly aligning the area at the bag opening that has lower rigidity and is more prone to tilting.

[0123] In another example, the first alignment component 201 can be configured to have an adjustable mounting position in the height direction. This adjustment is achieved via a height adjustment slot and locking screw on the mounting bracket of the first alignment component 201, accommodating changes in the center position of packaging bags of different heights. The second alignment component 202 is also adjustable in the height direction using a similar structure to accommodate changes in the opening position of packaging bags of different heights. Both adjustment structures are equipped with height markings, allowing operators to quickly adjust each alignment component to the height corresponding to the packaging bag specifications.

[0124] With this solution, the height of both alignment components can be adjusted independently, which can accommodate the middle and opening positions of packaging bags of various heights. The equipment has strong adaptability to multiple height specifications, which helps to reduce the specification limitations of a single machine.

[0125] Based on the bag-making equipment provided in the above embodiments, at least one pair of bag body alignment components 20 are provided, and at least one pair of bag body alignment components 20 are provided on both sides of the bag body receiving component 10 along the width direction of the bag body; wherein, the alignment end 200 of each pair of bag body alignment components 20 can abut against the corresponding side edge of the packaging bag in the alignment direction and push against the corresponding side edges of the bag body along the width direction of the bag body.

[0126] Specifically, paired bag alignment components 20 are respectively disposed on both sides of the receiving part 100. The two alignment ends 200 can simultaneously push and align the two side edges of the packaging bag from both sides in the width direction. Compared with single-sided alignment, simultaneous pushing from both sides can constrain the width center of the packaging bag to the symmetrical center line of the two alignment ends 200, resulting in higher alignment accuracy. At the same time, it avoids the bag tilting that may occur when pushing from one side. After alignment, the side edges of the packaging bag are neater, which is conducive to the precise gripping and transfer of subsequent processes.

[0127] This embodiment does not limit the specific arrangement of the paired bag alignment components 20. In one example, along the width direction of the packaging bag, one bag alignment component 20 can be provided on each side of the receiving portion 100 in the width direction, forming a corresponding pair of bag alignment components 20. The two bag alignment components 20 have the same structure, both including a cylinder-driven pushing member 220, with the alignment ends 200 of the two pushing members 220 facing the two sides of the packaging bag width direction on the receiving portion 100 respectively. The two cylinders are driven synchronously through a common air passage, and the two alignment ends 200 push inward synchronously against the two sides of the packaging bag width edge, and return to the initial position synchronously after pushing. The initial distance between the two pushing members 220 is preset according to the width of the receiving portion 100, and the distance at the extended position is the alignment reference distance in the width direction of the packaging bag.

[0128] During operation, the two alignment ends 200 simultaneously apply a pushing force from both sides inward to the width edges of the packaging bag, aligning the width center of the packaging bag with the symmetrical center line of the two alignment ends 200, thus achieving precise center alignment.

[0129] In other alternative examples, two or three bag alignment members 20 may be provided on each side of the receiving portion 100 along the width direction of the packaging bag. This embodiment does not require this to be the only one.

[0130] Based on the bag-sorting structure of the bag-making equipment provided in the above embodiments, such as Figure 1 As shown, the bag-feeding structure also includes a bag-body limiting component 30, which can move along the bag-body stacking direction and abut against the outer side of the packaging bag on the downstream side of the receiving part 100 in the bag-body stacking direction.

[0131] Specifically, the bag limiting component 30 can abut against the outer side of the downstream packaging bag on the receiving part 100 to limit the stack of packaging bags in the stacking direction and prevent the stacked group from tilting or scattering in the stacking direction; the bag limiting component 30 can move along the stacking direction and can dynamically retract as the number of packaging bags increases, always maintaining the abutment and limiting of the downstream packaging bag, ensuring the stability of the stacked group throughout the collection process.

[0132] This embodiment does not limit the specific structure of the bag limiting component 30. In one example, the bag limiting component 30 can be a stop that moves linearly along the bag stacking direction. The stop is mounted on the frame 1 via a linear guide rail that extends along the bag stacking direction. The end face of the stop facing the inside of the receiving part 100 is the limiting end, which abuts against the outer side of the downstream packaging bag on the receiving part 100 in the bag stacking direction, supporting and limiting the end of the stacked group. The stop is provided with a continuous inward thrust along the stacking direction by a spring or cylinder, ensuring that the limiting end is always in close contact with the outer side of the downstream packaging bag. As a new packaging bag is stacked, the stacked group grows along the stacking direction. The downstream packaging bag pushes the stop outward, and the stop dynamically retracts outward against the thrust of the spring or cylinder, always maintaining contact with the outer side of the downstream packaging bag.

[0133] During operation, the limiting end of the stop block continuously abuts against the end of the stacking group throughout the entire stacking process to prevent the stacking group from tipping over due to loss of support in the stacking direction.

[0134] In another example, the bag limiting component 30 may include an electric push rod and a limiting plate 310 assembly mounted on the end of the push rod. The electric push rod is mounted on the frame 1 along the bag stacking direction, and the limiting plate 310 assembly is fixed to the telescopic end of the electric push rod. The end face of the limiting plate 310 assembly facing the inner side of the receiving part 100 abuts against the outer side of the downstream packaging bag. Based on the bag ejection signal from the bag making equipment, the control system drives the electric push rod to retract a preset distance (corresponding to the thickness of the packaging bag) along the stacking direction upon receiving each ejection signal, achieving precise step-by-step retraction. During operation, the control system can be synchronized with the bag ejection cycle of the bag making equipment in real time, controlling the electric push rod to retract synchronously, ensuring that the limiting plate 310 assembly always maintains the correct position on the outer side of the downstream packaging bag.

[0135] Using this approach, precise step-back control can accurately track the end position of the stacked group, preventing gaps or excessive tightness between the limit plate 310 component and the packaging bag.

[0136] Based on the bag-sorting structure of the bag-making equipment provided in the above embodiments, such as Figure 1 , Figure 3 , Figure 4 As shown, the bag limiting component 30 also includes a limiting drive mechanism 300 and a limiting plate 310 disposed on the limiting drive mechanism 300. The end of the limiting plate 310 extends toward the packaging bag on the receiving part 100 to form a limiting part. When the packaging bags are stacked sequentially on the receiving part 100, the limiting drive mechanism 300 moves the limiting plate 310 along the bag stacking direction, and the limiting part continuously abuts against the outer wall of the packaging bag on the downstream side of the receiving part 100.

[0137] Specifically, the limiting drive mechanism 300 drives the limiting plate 310 to move along the stacking direction of the bags, so that the limiting part of the limiting plate 310 is always in close contact with the outer wall of the downstream packaging bag, achieving dynamic follow-up limiting. As new packaging bags are continuously stacked, the stacking group moves along the stacking direction, and the limiting drive mechanism 300 continuously drives the limiting plate 310 to retract synchronously, so that the limiting part does not obstruct the stacking of new packaging bags, while always maintaining support and limiting at the end of the stacking group, which can prevent the stacking group from tilting or collapsing due to loss of restraint during collection.

[0138] This embodiment does not limit the specific structure of the limiting drive mechanism 300 and the limiting plate 310. In one example, the limiting drive mechanism 300 can be a combination of a cylinder and a synchronous belt drive mechanism. Specifically, the cylinder is connected to a section of the synchronous belt, and the synchronous belt passes around the synchronous pulleys at both ends along the stacking direction of the bag. The limiting plate 310 is connected to the piston rod of the cylinder, and the end of the limiting plate 310 extends toward the inside of the receiving part 100 to form a limiting part. The end face of the limiting part contacts the outer wall surface of the downstream packaging bag. When the synchronous belt rotates, the cylinder on a section of the synchronous belt and the limiting plate 310 retract synchronously along the stacking direction. The retraction stroke is determined by the cylinder stroke and the synchronous belt transmission ratio and can be adjusted according to the thickness of the packaging bag. The extension and retraction of the piston rod of the cylinder can move the limiting plate 310 in the width direction of the packaging bag.

[0139] During operation, after each bag is stacked, the limiting plate 310 is driven by the synchronous belt drive to retract by one bag thickness along the stacking direction. The limiting part continuously abuts against the outer wall of the downstream packaging bag to maintain surface contact limiting.

[0140] In another example, the limit drive mechanism 300 can also be configured as a servo motor, which drives the limit plate 310 to move precisely along the stacking direction of the bags via a ball screw. The servo motor is fixedly mounted on the frame 1, the ball screw is set along the stacking direction, and the limit plate 310 is fixed to the ball screw by a screw nut. The end of the limit plate 310 forms a limiting part, which extends towards the outer wall of the packaging bag. The servo motor communicates in real time with the control system of the bag-making equipment. Every time the bag-making equipment outputs a bag, the servo motor drives the ball screw to rotate, causing the limit plate 310 to retract by a precise step distance along the stacking direction. The step distance corresponds exactly to the thickness of the packaging bag.

[0141] This approach offers high servo drive precision, better synchronization with the bag-out cycle, and precise position control of the limiting part, which helps maintain stable and accurate limiting of the end of the stacked group even at high speeds.

[0142] In another example, the limit drive mechanism 300 can be a combination of a cylinder and a ratchet mechanism. The piston rod of the cylinder is connected to a pawl, the ratchet is coaxially connected to a rack, and the rack is connected to a limit plate 310. Each time the cylinder extends, the pawl pushes the ratchet to rotate through a fixed angle, and the rack converts the rotation into linear movement, driving the limit plate 310 to retract a fixed step distance along the stacking direction. When the cylinder retracts, the pawl automatically resets under the action of the ratchet's one-way mechanism, and the limit plate 310 remains in the retracted position without retracting. The cylinder's trigger signal comes from the bag-dispensing sensor of the bag-making equipment. Each bag dispensed triggers a cylinder action, achieving step-by-step retraction.

[0143] Based on the bag-making equipment provided in the above embodiments, the bag body limiting component 30 further includes a first limiting adjustment mechanism. The first limiting adjustment mechanism 320 has a first adjusting end 321 that can move along the alignment direction. The limiting plate 310 is connected to the first adjusting end 321. The first adjusting end 321 can adjust the first stop position of the limiting plate 310 relative to the receiving part 100 in the alignment direction.

[0144] Furthermore, the bag limiting component 30 may also include a second limiting adjustment mechanism 330, which has a second adjustment end 331 that can move along the bag stacking direction. The limiting plate 310 is tractively connected to the second adjustment end 331, and the second adjustment end 331 can adjust the second stop position of the limiting plate 310 relative to the receiving part 100 in the bag stacking direction.

[0145] It should be understood that the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330 can be provided with only one of them, or both of them. Specifically, the first limit adjustment mechanism 320 can adjust the initial stop position of the limit plate 310 in the alignment direction (i.e., the first stop position, which remains unchanged in the alignment direction during the process of packaging bags being stacked sequentially on the receiving part 100) to adapt to the limit requirements of packaging bags of different widths; the second limit adjustment mechanism 330 can adjust the stop position of the limit plate 310 in the bag stacking direction (i.e., the second stop position, which can be understood as adjusting the limit plate 310's extreme position relative to the receiving part in the bag stacking direction. During the process of packaging bags being stacked sequentially on the receiving part 100, the limit plate 310 moves continuously along the bag stacking direction, but after reaching this position, the limit plate 310 will no longer move along the bag stacking direction) to adapt to the limit requirements of packaging bags of different thicknesses or different stacking thicknesses. The two-dimensional adjustment capability allows the limiting component to adapt well to various packaging bag sizes. When changing sizes, only the corresponding mechanism needs to be adjusted, making the operation convenient.

[0146] This embodiment does not limit the specific structure of the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330. In one example, if only the first limit adjustment mechanism 320 is provided, the first limit adjustment mechanism 320 may include a guide rail disposed on the frame 1 along the alignment direction and a first adjustment end 321 that can slide along the guide rail. The first adjustment end 321 is an adjustment slide on the guide rail. The limit plate 310 (and the limit drive mechanism 300 thereon) can be fixed to the first adjustment end 321 by a mounting plate. Adjusting the position of the first adjustment end 321 on the guide rail can drive the limit plate 310 to move as a whole in the alignment direction, changing the alignment direction position of the limit plate 310 (i.e., the first stop position). The guide rail may also be provided with a scale mark for the alignment direction. The operator can quickly position the first adjustment end 321 to the corresponding scale according to the width specification of the packaging bag and fix it by locking the knob.

[0147] During operation, before changing the gauge, loosen the locking knob, adjust the first adjustment end 321 to the scale position corresponding to the new gauge, and then lock it. The position of the limiting part in the alignment direction will match the outer wall of the new gauge packaging bag, and the limiting part can accurately align with the outer wall of the end of the stacked group. With this solution, the adjustable alignment direction allows the limiting part to accurately align with the outer wall of packaging bags of different widths, ensuring the effectiveness of the limiting effect. The gauge changing operation is simple and suitable for multi-specification production lines with a large range of width variations.

[0148] In another example, if only the second limit adjustment mechanism 330 is provided, the second limit adjustment mechanism 330 may include a guide rail arranged along the bag stacking direction and a second adjustment end 331 that can slide along the guide rail. The second adjustment end 331 is an adjustment slide on the guide rail. The limit plate 310 (and its limit drive mechanism 300) is fixed on the second adjustment end 331. Adjusting the position of the second adjustment end 331 on the guide rail can drive the limit plate 310 to move as a whole in the bag stacking direction, changing the initial stop position (i.e., the second stop position) of the limit plate 310 in the stacking direction. The guide rail may also have a scale marking for the stacking direction. The operator can position the second adjustment end to the corresponding scale according to the thickness of the packaging bag and the initial stacking position.

[0149] When changing specifications, adjust the second adjustment end 331 to the initial position of the stacking direction corresponding to the new specification and then lock it to ensure that the limiting part of the limiting plate 310 can accurately abut from the starting position after the first bag is stacked, and there will be no situation where the end of the stacking group is unrestrained in the initial stage.

[0150] In another example, the bag-body limiting component 30 is equipped with both a first limiting adjustment mechanism 320 and a second limiting adjustment mechanism 330. The first and second limiting adjustment mechanisms 320 and 330 are each independently mounted on the frame 1. Their respective adjustment ends (first adjustment end 321 and second adjustment end 331) adjust the position of the limiting plate 310 (which can be connected via a common mounting platform) in the alignment and stacking directions, respectively. The common mounting platform connects both adjustment ends simultaneously via a linkage mechanism, ensuring that the adjustments of the limiting plate 310 in the alignment and stacking directions are independent and do not interfere with each other.

[0151] During operation, the first limit adjustment mechanism 320 is adjusted to complete the alignment direction positioning, and then the second limit adjustment mechanism 330 is adjusted to complete the initial position positioning in the stacking direction. After two steps of adjustment, the limiting part can be accurately adapted to the two-dimensional limiting requirements of the new specification packaging bag.

[0152] Furthermore, when the bag limiting component 30 includes a first limiting adjustment mechanism 320 and a second limiting adjustment mechanism, the limiting drive mechanism 300 may be disposed on the second adjusting end 331, and the second limiting adjustment mechanism 330 may be disposed on the first adjusting end 321.

[0153] Using this scheme, the second limit adjustment mechanism 330 is mounted on the first adjustment end 321 of the first limit adjustment mechanism 320, and the limit drive mechanism 300 is mounted on the second adjustment end 331 of the second limit adjustment mechanism 330, forming a series transmission chain. Through this nested installation structure, the adjustment of the first limit adjustment mechanism 320 in the alignment direction will drive the entire second limit adjustment mechanism 330 and the limit drive mechanism 300 to move synchronously. The adjustment of the second limit adjustment mechanism 330 in the stacking direction will drive the limit drive mechanism 300 and the limit plate 310 to move synchronously. The adjustments in the two directions do not interfere with each other, and the two adjustment mechanisms share the limit plate 310 as the actuator, resulting in high structural integration and reducing the number of parts.

[0154] In one example, the first adjustment end 321 of the first limit adjustment mechanism 320 can be a first adjustment slide mounted on a guide rail arranged along the alignment direction, the second limit adjustment mechanism 330 is entirely mounted on the first adjustment slide (i.e., the guide rail, drive mechanism, etc. of the second limit adjustment mechanism 330 are all mounted on the mounting surface of the first adjustment slide), the second adjustment end 331 of the second limit adjustment mechanism 330 is a second adjustment slide mounted on a guide rail arranged along the stacking direction, the limit drive mechanism 300 is entirely mounted on the second adjustment slide, and the limit plate 310 is connected to the drive end of the limit drive mechanism 300. When the first adjusting slide moves in the alignment direction, it drives the second limiting adjustment mechanism 330, the limiting drive mechanism 300, and the limiting plate 310 mounted on it to move as a whole in the alignment direction; when the second adjusting slide moves in the stacking direction, it drives the limiting drive mechanism 300 and the limiting plate 310 to move as a whole in the stacking direction; when the limiting drive mechanism 300 works, it drives the limiting plate 310 to move back in the stacking direction. The movements in the above three directions are independently superimposed on each other.

[0155] During operation, after the alignment and stacking directions are adjusted, the limit drive mechanism 300 performs real-time follow-up retraction during the stacking process. This approach achieves the highest integration of the serial stacked structure, with the movements of the three functional modules being independent and non-interfering. The overall structure is compact, which helps reduce manufacturing costs and maintenance workload.

[0156] It should be understood that in this example, the first adjusting slide and the second adjusting slide can also be linked by a synchronous belt, guide rod or other structure, and this application does not make it the only requirement.

[0157] In another example, the first limit adjustment mechanism 320 or the second limit adjustment mechanism 330 both include a drive motor and a lead screw and nut mechanism. The lead screw of the lead screw and nut mechanism is synchronously rotatably connected to the output shaft of the drive motor. The first adjustment end 321 or the second adjustment end 331 is a moving block with internal threads that is threaded onto the lead screw.

[0158] Furthermore, both the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330 include a drive motor and a slide rail slider mechanism. The slide rail of the slide rail slider mechanism extends along the alignment direction or the bag stacking direction, and the first adjustment end 321 or the second adjustment end 331 is a slider that is slidably disposed on the slide rail and is connected to the drive motor for transmission.

[0159] Specifically, the lead screw and nut mechanism can drive the lead screw to rotate via a drive motor, causing the moving block threaded onto the lead screw to move linearly along the lead screw axis. This mechanism features high transmission accuracy, good self-locking, and accurate positioning, making it suitable for applications requiring high adjustment precision. The slide rail and slider mechanism, on the other hand, uses a drive motor via a transmission mechanism to drive the slider along the slide rail. This provides good guidance and stable movement, making it suitable for applications requiring large stroke adjustments. Both implementations can achieve automatic electric adjustment, offering higher adjustment efficiency and better repeatability compared to manual adjustment. This facilitates rapid gauge changes and reduces human error.

[0160] It should be understood that this application does not impose a unique requirement on the specific structure of the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330. They can adopt the same structure; for example, both the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330 can adopt a scheme including a drive motor and a lead screw and nut mechanism, or both can adopt a scheme including a drive motor and a slide rail and slider mechanism. Of course, different schemes can also be used. For example, one of the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330 can adopt a scheme including a drive motor and a lead screw and nut mechanism, while the other adopts a scheme including a drive motor and a slide rail and slider mechanism. Alternatively, other combined adjustment schemes as described in the above examples can also be used.

[0161] In one example, both the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330 may include a drive motor and a lead screw and nut mechanism. The two ends of the lead screw in the lead screw and nut mechanism are supported on the mounting frame by bearings. The lead screw is synchronously connected to the output shaft of the drive motor via a coupling. The moving block (i.e., the first adjustment end 321 or the second adjustment end 331) has an internal thread that mates with the lead screw, and the thread is sleeved on the lead screw. The moving block and the lead screw are connected by a helical transmission. The moving block is provided with a guide groove that mates with the guide rail of the mounting frame to prevent the moving block from rotating with the lead screw and to guide the moving block to move linearly along the lead screw axis. When the drive motor rotates forward, the moving block moves forward along the lead screw axis; when it rotates in reverse, it moves in the opposite direction. When stopped, the self-locking property of the lead screw and nut mechanism keeps the moving block stably stopped at its current position without the need for additional holding brakes.

[0162] During operation, the control system drives the motor to rotate in both directions, and the moving block moves precisely to the target position, driving the limit plate 310 to complete the precise adjustment of the corresponding direction in two-dimensional positioning.

[0163] In another example, both the first limit adjustment mechanism 320 and the second limit adjustment mechanism 330 may include a drive motor and a slide rail slider mechanism. The slide rail is fixed to the mounting frame along the adjustment direction (alignment direction or bag stacking direction), and the slider can slide along the slide rail. The slider (i.e., the first adjustment end 321 or the second adjustment end 331) is connected to the drive motor via a synchronous belt transmission mechanism: the synchronous belt passes around the synchronous pulley at the drive end and the synchronous pulley at the driven end, and one end of the belt is fixed to the slider. The drive motor rotates to drive the synchronous belt to move, causing the slider to slide along the slide rail to the target position. The limit plate 310 (and the limit drive mechanism 300 on it) is mounted on the slider. After the slider is in place, the position is locked by an electromagnetic brake or a pneumatic locking mechanism. During operation, the drive motor drives the synchronous belt to move the slider, and the limit plate 310 moves precisely to the target position with the slider and then locks, completing the adjustment in that direction.

[0164] In another example, the two adjusting mechanisms can simultaneously employ a combination of a lead screw and nut mechanism and a slide rail and slider mechanism: the lead screw and nut mechanism provides driving force and precise positioning; the lead screw is driven by a drive motor via a coupling, and the moving block is threaded onto the lead screw; the slide rail and slider mechanism are arranged in parallel with the lead screw and nut mechanism, with the slide rail axially parallel to the lead screw; the moving block (which can serve as either the first adjusting end 321 or the second adjusting end 331) is fixed to both the nut on the lead screw and the slider on the slide rail, with the slide rail restricting the direction of movement of the moving block to ensure that it moves in a straight line. The drive motor drives the lead screw to rotate, the lead screw and nut drive the moving block to move linearly, and the slide rail provides synchronous guidance.

[0165] It should be understood that, regarding the specific configuration of the bag limiting component 30, since both the second limiting adjustment mechanism 330 and the limiting drive mechanism 300 are for driving the position of the limiting plate 310 in the stacking direction, the second limiting adjustment mechanism 330 and the limiting drive mechanism 300 can share a set of drive structures, or a servo motor can be used in conjunction with a synchronous belt assembly to adjust the position of the limiting plate 310 in the stacking direction. In use, the starting and stopping time and speed of the servo motor can be controlled by the whole machine control system to realize the changing of the limit plate 310 and the gradual retraction movement.

[0166] It should be understood that, in this application, see [reference needed]. Figure 3 and Figure 4Furthermore, a pushing mechanism 301 can be provided between the limiting drive mechanism 300 and the limiting plate 310. Specifically, the pushing mechanism 301 can be located at the drive end of the limiting drive mechanism 300, and the limiting plate 310 can be connected to the drive end of the pushing mechanism 301. The pushing mechanism 301 can be a cylinder, an electric telescopic rod, etc., and the limiting plate 310 can be connected to the telescopic end of the cylinder or the electric telescopic rod. After each bag sorting operation, the pushing mechanism 301 can retract in conjunction with the limiting plate 310, allowing the stacked packaging bag group to move normally without obstruction. Conversely, after a bag sorting operation is completed, the pushing mechanism 301 pushes the limiting plate 310 to the blocking position to limit the packaging bag.

[0167] Based on the bag sorting structure of the bag making equipment provided in the above embodiments, the bag sorting structure may include at least one pair of bag body limiting members 30 arranged opposite to each other in the alignment direction. Each pair of bag body limiting members 30 is located on both sides of the receiving part 100 in the alignment direction, and the limiting part of each bag body limiting member 30 abuts against the corresponding side of the outer side of the packaging bag on the most downstream side of the receiving part 100.

[0168] Specifically, the paired bag-body limiting components 30 are located on both sides of the receiving portion 100 in the alignment direction. The limiting part of each limiting component abuts against the corresponding side of the outer side of the downstream packaging bag, forming a double-sided limiting constraint on the end of the stacking group. The double-sided limiting not only prevents the stacking group from tilting in the bag stacking direction, but also constrains the offset of the packaging bag in the alignment direction, further improving the overall stability of the stacking group, especially when stacking bags at high speed.

[0169] This embodiment does not limit the specific installation configuration of the paired bag-body limiting components 30. In one example, the bag sorting structure may include a pair of bag-body limiting components 30 arranged opposite each other in the alignment direction. The pair of bag-body limiting components 30 are respectively installed on both sides of the receiving part 100 on the frame 1 in the alignment direction. Each bag-body limiting component 30 includes a limiting drive mechanism 300 and a limiting plate 310. The limiting part of each limiting plate 310 extends toward the inside of the receiving part 100 and abuts against the corresponding side of the outer wall of the downstream packaging bag (one side abuts the left side and the other side abuts the right side). The limiting drive mechanisms 300 on both sides synchronously drive the limiting plates 310 on both sides to retract synchronously in the stacking direction through a shared control signal, ensuring that the limiting parts on both sides always abut against the two sides of the end of the stacked group at the same time.

[0170] During operation, the limiting parts on both sides synchronously follow the end of the stacked group, and simultaneously provide double support to the downstream packaging bag on both sides in the alignment direction to prevent the end of the stacked group from laterally deviating in the alignment direction.

[0171] In another example, the bag limiting component 30 can be configured as two pairs, with each pair of bag limiting components 30 respectively installed on both sides of the receiving part 100 on the frame 1 in the alignment direction, and the two pairs of bag limiting components 30 are respectively arranged at intervals in the height direction of the packaging bag, for example, one abuts the bag near the bag opening, and the other abuts near the bottom of the bag.

[0172] It should be understood that the bag limiting component 30 can be set in ways other than the two examples mentioned above. It can also be set in more than 3 or 4 pairs. This application does not make it the only requirement.

[0173] Based on the bag-sorting structure of the bag-making equipment provided in the above embodiments, such as Figure 1 As shown, the bag receiving component 10 collects the packaging bags in an upright position on the receiving part 100; the receiving part 100 is also provided with a receiving recess 110, and the bottom of each packaging bag is received in the receiving recess 110; the width of the receiving recess 110 in the alignment direction is adjustable.

[0174] Specifically, the receiving recess 110 forms a slot-like receiving area for the bottom of the packaging bag, and restrains the bottom edge of the packaging bag on both sides to prevent the bottom of the upright stacked packaging bags from sliding to the side, so that the bottom of the entire stack of packaging bags remains neatly aligned. Combined with the pushing action of the bag alignment component 20 on the opposite side edges, comprehensive alignment restraint from the bottom to the sides is achieved. The width of the receiving recess 110 in the alignment direction is adjustable to accommodate the bottom dimensions of packaging bags of different widths, ensuring that packaging bags of different sizes can be reliably received within the recess.

[0175] This embodiment is not limited in the specific structure and width adjustment method of the receiving recess 110. In one example, the bag receiving component 10 collects the packaging bag with the packaging bag standing upright on the receiving part 100. The upper surface of the receiving part 100 has a recess 110 in the form of a groove along the stacking direction of the bags. The receiving recess 110 extends through the receiving part 100 along the stacking direction. The two side walls of the recess are vertical surfaces, and the bottom surface of the recess is a horizontal surface. The bottom of the packaging bag is embedded in the receiving recess 110. The two side walls of the recess constrain the two side edges of the bottom of the packaging bag in the alignment direction, preventing the bottom of the packaging bag from sliding to the sides, so that the bottom of the packaging bag remains aligned within the receiving recess 110 when stacked upright. The width of the receiving recess 110 in the alignment direction is adjusted by adjustable side plates provided on both sides of the recess: the adjustable side plates are installed on the receiving part 100 through a guide rail slider mechanism, and can be slidably adjusted in the alignment direction and then fixed by locking screws. The distance between the two adjustable side plates is the effective width of the recess.

[0176] During operation, the adjustable side panels on both sides are adjusted to a suitable distance according to the bottom width of the packaging bag. After the bottom of the packaging bag is folded in, it is constrained from both sides by the adjustable side panels of the recess, and the bottom edge is automatically aligned. With this solution, the adjustable spacing of the side panels allows the receiving recess 110 to adapt to packaging bags with various bottom width specifications, making it highly versatile.

[0177] In another example, the receiving recess 110 can be formed by two parallel side guide plates that can move independently in the alignment direction. The facing surfaces of the two side guide plates are the two side walls of the recess. The two side guide plates are mounted on the receiving portion 100 through their respective adjustment mechanisms. Each adjustment mechanism includes an adjustment screw arranged in the alignment direction and a threaded mounting seat that mates with it. Rotating the adjustment screw can drive the corresponding side guide plate to move in the alignment direction, changing the position of the side wall on that side, thereby adjusting the width of the recess. The two adjustment screws can be adjusted synchronously and symmetrically, or they can be adjusted independently to adapt to situations where an asymmetrical recess position is required.

[0178] In another example, the bottom surface of the receiving recess 110 may be embedded with multiple rows of low-friction ball bearings or covered with a low-friction material (such as a polytetrafluoroethylene coating) to reduce the coefficient of friction between the bottom of the packaging bag and the bottom surface of the recess. This allows the packaging bag to smoothly move within the recess towards the stacking position when the bottom of the packaging bag is stacked, without hindering the stacking action due to excessive friction on the bottom surface. The side walls of the receiving recess 110 may be lined with elastic cushioning strips (such as rubber strips or silicone strips). These elastic cushioning strips provide flexible restraint to the bottom edges of the packaging bag, and their elastic deformation can adapt to minor dimensional deviations in the bottom edges of the packaging bag. Simultaneously, they cushion the impact between the packaging bag and the side walls during stacking, reducing damage to the bottom edges caused by impacts from rigid side walls. The width of the receiving recess 110 can be adjusted by adjusting the position of the elastic cushioning strips on both sides.

[0179] Based on the bag sorting structure of the bag making equipment provided in this application, it may further include a handle sorting component 40, which is disposed on the upstream side of the inlet of the bag receiving component 10; wherein, the handle sorting component 40 has an extension extending toward the packaging bag, and the extension can abut against the corresponding side wall of the packaging bag on the upstream side of the inlet of the bag receiving component 10.

[0180] Specifically, the handle straightening component 40 is located upstream of the inlet of the bag receiving component 10. Before the packaging bag reaches the receiving part 100, the extension can abut against the corresponding side wall of the packaging bag, pre-straightening the handle or side wall of the packaging bag (especially paper bags with handles) to prevent the handle or side wall of the bag from deflecting or turning over before entering the receiving part 100. This helps to further improve the stacking quality, reduce the impact of handle deformation on the neatness of stacking, or interfere with the handling of subsequent packaging bag groups.

[0181] It should be understood that the inlet direction of the bag receiving component 10 is not limited. For example, it can be parallel to the stacking direction of the bag or perpendicular to the stacking direction of the bag.

[0182] Furthermore, the specific structure of the handle organizing component 40 is not limited in this embodiment. In one example, the handle organizing component 40 can be a baffle assembly fixedly installed on the frame 1 (upstream of the inlet of the bag receiving component 10). The main body of the baffle assembly is fixed to the frame 1 by a support frame. The extension of the baffle assembly is a cantilever section extending horizontally from the main body plate towards the receiving part 100. The free end of the extension is bent downward to form a vertical section. The side of the vertical section contacts the corresponding side wall of the packaging bag (especially the area near the handle) before the packaging bag enters the inlet of the receiving part 100. The distance between the vertical section of the extension and the inlet of the receiving part 100 (i.e., its position in the entry direction) and the coverage range of the vertical section in the height direction can be pre-adjusted and fixed according to the handle position of the packaging bag.

[0183] During operation, when the packaging bag is conveyed to the inlet of the receiving section 100, one side wall (handle area) first contacts the vertical section of the extension. The vertical section blocks and organizes the flipped or extended handle rope or side wall. As the packaging bag continues to move into the receiving section 100, the handle is gathered by the vertical section and then pressed against the side wall, entering the receiving section 100 in a neat posture.

[0184] In another example, the handle organizing component 40 can be a pair of baffles symmetrically arranged on both sides of the entrance of the bag receiving component 10. Each baffle is fixed to the frame 1 by an independent mounting bracket. Each baffle has an extension extending towards the opposite side, and the distance between the two extensions is slightly larger than the width of the packaging bag, allowing the packaging bag to smoothly pass through the channel between the two extensions into the receiving part 100. The two extensions simultaneously abut against the two side walls of the packaging bag from both sides, synchronously organizing and tidying up the handles or outward extensions on the two side walls. The mounting brackets on both sides achieve synchronous and symmetrical adjustment of the spacing through a linkage adjustment mechanism to adapt to packaging bags of different widths.

[0185] In another example, the extension of the handle organizing component 40 can be equipped with a rotary active organizing mechanism: a motor-driven rotary brush roller is installed at the end of the extension, the axis of the brush roller is parallel to the stacking direction of the bag, and the bristles of the brush roller contact the side wall of the packaging bag, thereby sweeping the handle. During operation, as the packaging bag passes over the rotary brush roller, the rotating bristles of the brush roller actively sweep the side wall of the packaging bag, and can gather and organize any raised handle straps or protruding side walls.

[0186] Based on the bag sorting structure of the bag making equipment provided in the above embodiments, in this application, the handle sorting component 40 can be configured as a plate-shaped structure, and the extension is a bent portion formed by bending one end of the handle sorting component 40; and the handle sorting component 40 can be positioned relative to the receiving portion 100 in the bag stacking direction and / or entry direction.

[0187] Specifically, the handle organizing component 40 adopts a plate-like structure, with the bending part formed by bending a single plate, resulting in a simple structure and low manufacturing cost. The extension direction of the bending part contacts the side wall of the bag, enabling even contact with the side wall of the packaging bag over a large area, avoiding localized stress concentration that could lead to bag deformation. The position of the handle organizing component 40 in the bag stacking direction and / or entry direction is adjustable, allowing for flexible adjustment of the contact position according to the handle position and size of different packaging bags, thus providing strong adaptability.

[0188] This embodiment is not limited to the position adjustment mechanism of the handle organizing component 40. In one example, the handle organizing component 40 is an integral plate structure, which can be made of a metal plate. One end of the plate is bent to form a bent section. The bent section is perpendicular to the main plate plane and extends toward the side wall of the packaging bag. The side of the bent section is the contact surface that abuts against the side wall of the packaging bag. The contact surface covers the height range of the handle area on the side wall of the packaging bag. The area of ​​the contact surface is larger than the projected area of ​​the handle area, ensuring that both the handle and the side wall are within the coverage of the contact surface. The handle organizing component 40 is fixed to the frame 1 by a mounting plate. The mounting plate is provided with waist-shaped adjustment holes extending along the bag stacking direction and the entry direction (the direction in which the packaging bag enters the receiving part 100). The mounting screw passes through the waist-shaped hole to fix the handle organizing component 40. After loosening the screw, the position of the organizing component can be adjusted in two directions. After adjustment, the screw is tightened to lock it.

[0189] During operation, the bent section of the bending part continuously abuts against the side wall handle area of ​​the packaging bag from the upstream side of the inlet, and organizes the handle. The position of the handle organizing part 40 can be adjusted according to the handle position of different packaging bags.

[0190] In another example, the handle organizing component 40 can be made of a flexible metal sheet (such as spring steel plate). The bent section is formed by bending the end of the flexible sheet. The bent section has a certain elastic rebound force. When the side wall of the packaging bag contacts the bent section, the bent section can undergo a small elastic deformation after being subjected to force, adapting to the actual position of the side wall of the packaging bag. No matter how the thickness of the packaging bag (i.e., the position of the side wall) changes within the specification range, the bent section can always maintain appropriate elastic pressure on the side wall, and will not lose contact or be excessively squeezed due to slight deviations in the position of the side wall. The flexible handle organizing component 40 is quickly installed on the frame 1 through a slot mechanism. The position in the bag stacking direction and the entry direction is adjusted through the long strip adjustment groove in the slot. During operation, the flexible bent section adaptively contacts the side wall of each packaging bag. Within a certain specification range, there is no need to readjust the position every time the specification is changed, and the organizing contact force is uniform.

[0191] In another example, the position adjustment of the handle organizing component 40 in both the bag stacking direction and the entry direction can be achieved through electric adjustment mechanisms. An electric push rod is provided in the bag stacking direction, driving the handle organizing component 40 to move along the stacking direction, changing the stacking position range covered by the bend. An electric linear module is provided in the entry direction, driving the handle organizing component 40 to move along the entry direction, changing the distance between the bend and the inlet of the receiving part 100 in the entry direction. Both electric adjustment mechanisms are uniformly controlled by a control system. The control system stores the adjustment parameters for each size of packaging bag corresponding to the two directions. When changing sizes, it automatically drives the electric adjustment mechanisms in both directions to the target position, eliminating the need for manual adjustment of the mechanical components.

[0192] During operation, the machine's control system automatically positions the handle organizing component 40 in both directions after receiving the gauge change command. Once positioning is complete, production can continue. This fully automatic bidirectional electric adjustment reduces manual intervention during gauge changes, making it particularly suitable for highly automated production lines. When linked with the bag-making equipment control system, gauge changes can be completed automatically with a single button, shortening changeover time and improving the flexibility and efficiency of the production line.

[0193] Based on the bag-sorting structure of the bag-making equipment provided in the above embodiments, such as Figure 5 As shown, the bag handling structure provided in this application also includes a bag transfer component 50 disposed on the frame 1 downstream of the bag receiving component 10. The bag transfer component 50 includes a bag holding mechanism 510 that can move between the receiving part 100 and the next work station. The bag holding mechanism 510 is used to transfer multiple packaging bags stacked on the receiving part 100 to the next work station.

[0194] Specifically, the bag transfer component 50 is integrated into the bag sorting structure. After the receiving part 100 completes the stacking and alignment of bags, the bag holding mechanism 510 directly holds the entire stack of packaging bags and transfers them from the receiving part 100 to the next work station (such as the bundling work station, the boxing work station, etc.), realizing the integrated automatic operation of stacking, alignment and transfer of bags, eliminating manual handling links, and helping to improve the automation level and production cycle of the production line.

[0195] This embodiment does not limit the specific structure of the bag holding mechanism 510. The bag holding mechanism 510 of the bag transfer component 50 can be a pneumatic parallel gripper. The pneumatic parallel gripper includes a gripper cylinder and two opposing gripping plates driven by the gripper cylinder. Both gripping plates can move towards or away from each other along the alignment direction (i.e., the width direction). The inner side of the gripping plates is covered with an elastic cushioning pad to flexibly grip the two width sides of the entire stack of packaging bags. The bag holding mechanism 510 is connected to the transfer drive component through a mounting bracket and can reciprocate between the receiving part 100 and the next station (bundling station).

[0196] During operation, when the number of packaging bags stacked on the receiving part 100 reaches the preset value, the bag holding mechanism 510 moves to the receiving part 100, the gripper cylinder drives the two gripping plates to clamp the two sides of the width of the entire stack of packaging bags, and then the bag holding mechanism 510 carries the entire stack of packaging bags to the bundling station, and the gripper releases to complete the transfer.

[0197] In another example, the bag holding mechanism 510 can be a vacuum adsorption gripping mechanism, including multiple vacuum suction cups and vacuum air passages connected to the suction cups. The multiple vacuum suction cups are installed on the gripping frame in an array. The suction cup array of the gripping frame covers the sides of the entire stack of packaging bags. The vacuum suction cups adsorb the sides of the packaging bags under negative pressure, adsorbing and holding the entire stack of packaging bags as a whole.

[0198] During operation, the bag holding mechanism 510 moves to the receiving part 100, and the vacuum circuit is connected so that the suction cups apply adsorption force to the sides of the stack of packaging bags, adsorbing and fixing the stacked group and then moving it to the next work station. After it arrives in place, the vacuum is closed to release the stacked group.

[0199] In another example, the bag holding mechanism 510 may also be a pallet-type holding mechanism, including a pallet that can be inserted into the bottom of the stack of packaging bags from the bottom direction of the receiving part 100 and side clamps that clamp the stacked group from both sides. The pallet extends along the stacking direction to support the bottom surface of the stack of packaging bags, and the side clamps clamp the stacked group from both sides along the alignment direction (width direction).

[0200] During operation, the bag holding mechanism 510 first inserts the pallet into the bottom of the stacking group from below to form a bottom support, then drives the side clamps on both sides to clamp the sides of the stacking group, and then moves the whole assembly to the next work station; after it is in place, it first releases the side clamps, and then pulls back the pallet to release the stacking group.

[0201] Based on the bag transfer component provided in the above embodiments, such as Figure 5 As shown, the bag transfer component 50 may further include a swing mechanism 520 and a transfer drive mechanism 530; the transfer drive mechanism 530 is fixedly connected to the frame 1, one end of the swing mechanism 520 is drivenly connected to the drive end of the transfer drive mechanism 530, and the bag holding mechanism 510 is drivenly connected to the other end of the swing mechanism 520. The transfer drive mechanism 530 drives the swing mechanism 520 to swing so as to move the bag holding mechanism 510 between the receiving part 100 and the next station.

[0202] Specifically, the transfer drive mechanism 530 is fixed to the frame 1. The driving force is transmitted to the bag holding mechanism 510 via the swing mechanism 520, driving the swing mechanism 520 to swing and causing the bag holding mechanism 510 to reciprocate between the receiving part 100 and the next workstation. The swing arm transmission method of the swing mechanism 520 has a simple structure and high reliability. The transfer drive mechanism 530 being fixed to the frame 1 helps reduce the inertia of the moving parts, making the transfer action faster and improving the transfer cycle time.

[0203] This embodiment does not limit the specific structure of the swing mechanism 520 and the transfer drive mechanism 530. In one example, the swing mechanism 520 can be a single swing arm structure, with the root of the swing arm hinged to a fixed shaft fixed on the frame 1 via a bearing, allowing it to swing around the fixed shaft. The free end of the swing arm is connected to the bag holding mechanism 510. The transfer drive mechanism 530 can be a cylinder, with the cylinder body hinged to the frame 1. The piston rod end of the cylinder is hinged to the middle of the swing arm via a pin. When the cylinder extends or retracts, it drives the swing arm to swing around the fixed shaft. The free end of the swing arm then reciprocates along an arc trajectory between the receiving part 100 position and the next working position, driving the bag holding mechanism 510 to reciprocate between the two positions. The extension stroke and retraction stroke of the cylinder correspond to the positioning states of the bag holding mechanism 510 at the receiving part 100 and the next working position, respectively. Buffers are provided at both ends of the cylinder to reduce the impact when the swing arm reaches the two positions.

[0204] During operation, the cylinder drives the swing arm to swing, and the bag holding mechanism 510 reciprocates between two positions along an arc-shaped trajectory to complete the transfer of the stacked group.

[0205] In another example, the swing mechanism 520 can be a crank-connecting rod mechanism. One end of the crank is fixedly connected to the output shaft of the transfer drive mechanism 530, and the other end of the crank is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the mounting bracket of the bag holding mechanism 510. The mounting bracket is constrained to make linear motion in the horizontal direction (stacked direction) by a linear guide rail. A servo motor drives the crank to rotate, and the crank-connecting rod mechanism converts the rotational motion into reciprocating motion of the bag holding mechanism 510 in the horizontal direction.

[0206] In another example, the swing mechanism 520 can be a parallelogram four-bar linkage, including two main swing arms of equal length and a connecting rod connecting the free ends of the two main swing arms. The roots of the two main swing arms are respectively hinged to two fixed hinge points on the frame 1. The two fixed hinge points and the two end hinge points of the connecting rod form the four vertices of a parallelogram. The bag holding mechanism 510 is fixedly installed on the connecting rod. The transfer drive mechanism 530 is fixed on the frame 1, and its drive end is hinged to the middle of the main swing arm through a drive link, driving the main swing arm to swing. The other main swing arm passively follows through the parallelogram mechanism. The parallelogram mechanism keeps the connecting rod parallel to the line connecting the two fixed hinge points throughout the swing process (i.e., the connecting rod always remains vertical). Therefore, the bag holding mechanism 510 maintains a horizontal posture without tilting throughout the transfer trajectory, and the stacked group is always in a stable horizontal state.

[0207] During operation, the transfer drive mechanism 530 drives the main swing arm to swing, and the parallelogram mechanism ensures that the connecting rod and the bag holding mechanism 510 remain horizontal throughout the transfer process. The entire stack of packaging bags is smoothly transferred to the next work station in a horizontal posture, and the stacked group will not scatter due to the tilt of the holding mechanism during the transfer process.

[0208] In other alternative embodiments of the swing mechanism 520, the swing mechanism 520 may include an active swing arm 521, an intermediate connecting rod assembly 522, and a slider assembly 523; wherein, one end of the active swing arm 521 is tractively connected to the driving end of the transfer drive mechanism 530, one end of the intermediate connecting rod assembly 522 is tractively connected to the other end of the active swing arm 521, one end of the guide rod in the slider assembly 523 is rotatably connected to the frame 1, the bag holding mechanism 510 is connected to the other end of the guide rod, and the other end of the intermediate connecting rod assembly 522 is connected to a slider, which is slidably connected to the guide rod.

[0209] Specifically, the transfer drive mechanism 530 outputs swing motion through the active swing arm, which is transmitted to the slider via the intermediate connecting rod assembly. As the slider slides on the guide rod, it drives the guide rod to swing around the end hinged to the frame 1. The bag holding mechanism moves between the receiving part and the next workstation as the other end of the guide rod swings. This mechanism converts the rotational or swinging motion of the active swing arm 521 into the swinging motion of the guide rod, featuring a large range of motion and a compact transmission path. The relative sliding of the slider on the guide rod provides additional degrees of freedom, enabling a larger transfer stroke within a limited installation space. This facilitates efficient transfer of stacked groups in a compact bag-making machine.

[0210] This embodiment does not limit the specific structure of the active swing arm 521, the intermediate connecting rod assembly 522, and the slider assembly 523. In one example, the transfer drive mechanism 530 can be a rotary motor, one end of the active swing arm 521 is fixedly connected to the output shaft of the rotary motor and rotates synchronously with the output shaft; the intermediate connecting rod assembly 522 is a single connecting rod, one end of which is hinged to the other end (free end) of the active swing arm 521 by a pin, and the other end is hinged to the slider by a pin; the guide rod is a linear guide rod, one end of which is rotatably connected to a fixed hinge point on the frame through a bearing seat, and the other end is equipped with a bag holding mechanism; the slider is sleeved on the guide rod and can slide freely along the axial direction of the guide rod, and a linear bearing can be provided between the slider and the guide rod to reduce friction. When the rotary motor rotates, the active swing arm 521 rotates accordingly, driving the slider to slide along the guide rod through the intermediate connecting rod assembly 522. At the same time, the lateral force of the slider drives the guide rod to swing around the fixed hinge point. The bag holding mechanism swings back and forth between the receiving position and the next working position with the free end of the guide rod.

[0211] During operation, a rotary motor drives the active swing arm to rotate, which in turn drives a slider to slide on a guide rod via an intermediate connecting rod assembly. The guide rod swings around a fixed hinge point, causing the bag holding mechanism to reciprocate along an arc-shaped trajectory between the receiving section and the next workstation, completing the transfer operation of the stacked group. This design provides continuous and stable rotational drive from the rotary motor, and the transmission cooperation between the active swing arm 521 and the intermediate connecting rod assembly 522 allows the guide rod to achieve a large swing amplitude. This results in a large transfer stroke with a fixed motor mounting position and low inertia of the moving parts. The structure is compact and suitable for bag-making equipment with limited installation space but large transfer stroke requirements.

[0212] In another example, the intermediate link assembly may include a first sub-link and a second sub-link hinged to each other, forming a foldable double-section link. One end of the first sub-link is hinged to the free end of the active swing arm, and the other end of the second sub-link is hinged to the slider. The first and second sub-links can be folded relative to each other at their hinge points. One end of the guide rod is rotatably connected to a fixed mounting point on the frame via a ball joint, allowing the guide rod to swing in space within a certain angle range. The other end of the guide rod is connected to the bag holding mechanism. The slider is sleeved on the guide rod and can slide axially. The cooperation between the slider and the guide rod is equipped with a self-lubricating bushing to ensure smooth operation over long periods. The transfer drive mechanism 530 can be a servo motor, connected to the active swing arm via a reducer. The servo motor can precisely control the swing angle and speed of the active swing arm, thereby precisely controlling the swing amplitude and movement rhythm of the guide rod, achieving precise synchronization with the bag output rhythm of the bag making equipment.

[0213] During operation, the servo motor precisely controls the active swing arm to swing along a preset trajectory. The folding characteristic of the double-section intermediate connecting rod assembly allows the mechanism to achieve a larger swing amplitude of the guide rod within a limited space. The bag holding mechanism accurately moves the bag to the target workstation along the arc trajectory of the guide rod end. After reaching the target position, the servo motor holds the position and drives the mechanism to reset after the transfer operation is completed. With this solution, the folding double-section intermediate connecting rod assembly 522 occupies less space in the compressed state of the mechanism, making it suitable for occasions with extremely limited installation space. The precise position control of the servo drive ensures high positioning accuracy of the guide rod end (i.e., the bag holding mechanism), which is beneficial for achieving precise positioning of the stacked group at the target workstation (such as the bundling workstation).

[0214] The following describes the overall operation of the bag-sorting structure of the bag-making equipment provided in this application, with reference to the accompanying drawings:

[0215] like Figures 1 to 5 As shown, after the bag-making equipment completes the forming of the packaging bag, it conveys the packaging bag along the stacking direction of the bag body to the entrance of the bag sorting structure. During the process of the packaging bag reaching the bag receiving component 10, the extension of the handle sorting component 40 contacts the side wall of the corresponding side of the packaging bag, and pre-sorts and folds the handle (cord or buckle) and the outward side wall on the side wall. This can eliminate the flipping and outward deformation of the handle caused by airflow and inertia during the conveying process, and ensure that the packaging bag enters the entrance of the receiving part 100 with a flat side wall and a regular handle.

[0216] After the packaging bag enters the receiving part 100, its bottom is embedded in the receiving recess 110 and stacked upright on the receiving part. The two side walls of the receiving recess 110 passively constrain the bottom edge of the packaging bag in the alignment direction, preventing the bottom edge from shifting or tilting. The packaging bags are stacked in an upright posture to form a stacking group.

[0217] Each time a new packaging bag is stacked into the receiving part 100 (or every preset number of stacked bags), the alignment end 200 of the bag body alignment component 20 pushes against the width edge of the corresponding side of the stacked group on the receiving part 100 along the alignment direction (parallel to the width direction of the packaging bag), aligning the stacked packaging bags in the width direction and correcting the misalignment of the width edges of each packaging bag caused by the bag dropping deviation, so that the width edges of each packaging bag are aligned to the preset alignment reference. If a first alignment component 201 and a second alignment component 202 are provided, alignment forces are applied at the middle height and the bag opening height respectively to achieve full height alignment from the middle to the bag opening; if a pair of bag body alignment components 20 are provided, the two side alignment ends 200 push against the width edges of the packaging bags simultaneously from both sides in the width direction to achieve double-sided center alignment.

[0218] Throughout the stacking and collection process, the limiting part of the bag limiting component 30 always abuts against the outer wall of the downstream packaging bag on the receiving part 100 in the stacking direction, providing continuous support and limiting to the end of the stacked group, preventing the stacked group from tilting or collapsing in the stacking direction. As new packaging bags are continuously stacked, the stacked group grows along the stacking direction, and the bag limiting component 30 dynamically retracts in sync along the stacking direction, always maintaining effective contact with the outer wall of the downstream packaging bag. If a pair of bag limiting components 30 are provided, the limiting parts on both sides simultaneously provide double-sided support to the end of the stacked group from both sides of the alignment direction, which can further improve the stability of the end of the stacked group.

[0219] When the number of packaging bags stacked on the receiving part 100 reaches the preset value (one stack is completed and aligned), the bag transfer component 50 is activated: the transfer drive mechanism 530 drives the bag holding mechanism 510 from the standby position to the receiving part 100 via the swing mechanism 520. The bag holding mechanism 510 holds and fixes the entire stack of packaging bags. Then, the transfer drive mechanism 530 drives the swing mechanism 520 in the opposite direction, moving the bag holding mechanism 510 along with the entire stack of packaging bags to the next workstation (such as the bundling workstation). The bag holding mechanism 510 is released, and the entire stack of packaging bags is sent to the next workstation, completing one stacking, collection, and transfer operation. Subsequently, the receiving part 100 of the bag receiving component 10 is reset, and the bag limiting component 30 returns to the initial stop position, starting the next round of stacking and collection.

[0220] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0221] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0222] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0223] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0224] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0225] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A bag-sorting structure for a bag-making device, characterized in that, Including those mounted on the frame of the bag-making equipment: A bag receiving component, wherein the bag receiving component has a receiving part, and packaging bags entering the bag receiving component along the bag stacking direction are sequentially stacked on the receiving part; as well as At least one bag alignment component, each of the bag alignment components being disposed on a corresponding side of the receiving portion, having an alignment end on the side closer to the receiving portion, the alignment end being able to abut against the corresponding edge of the packaging bag on the receiving portion along an alignment direction perpendicular to the bag stacking direction.

2. The bag-sorting structure of the bag-making equipment as described in claim 1, characterized in that, The bag alignment component includes an alignment drive mechanism and a pushing member disposed at the drive end of the alignment drive mechanism. The alignment end is the end face of the pushing member facing the corresponding edge of the packaging bag. The alignment drive mechanism drives the pushing member to reciprocate along the alignment direction and switches between an extended position and an initial position when pushing and aligning the corresponding edge of the packaging bag. in The alignment end has a planar shape parallel to the stacking direction of the bags.

3. The bag-sorting structure of the bag-making equipment as described in claim 2, characterized in that, in The bag alignment component also includes an alignment adjustment mechanism. The alignment drive mechanism is disposed on the alignment adjustment mechanism. The position of the alignment adjustment mechanism in the alignment direction is adjustable. The alignment drive mechanism drives the alignment drive mechanism and, in conjunction with the push member, adjusts the protrusion position of the alignment end relative to the receiving part. or The position of the drive end of the alignment drive mechanism is adjustable in the alignment direction, and it drives the push member to adjust the protrusion position of the alignment end relative to the receiving part.

4. The bag-sorting structure of the bag-making equipment as described in claim 1, characterized in that, The bag alignment component includes a guide member, and the alignment end is the end face of the guide member facing the corresponding edge of the packaging bag; wherein The alignment end has a planar shape that extends obliquely relative to the stacking direction of the bag body, and the distance between the corresponding edge of the packaging bag and the receiving part gradually decreases in the alignment direction from the inside to the outside.

5. The bag-sorting structure of the bag-making equipment as described in claim 4, characterized in that, in The bag alignment component also includes a guide adjustment mechanism. The guide member is disposed on the guide adjustment mechanism. The position of the guide adjustment mechanism in the alignment direction is adjustable, and the guide member is driven to adjust the position of the alignment end relative to the receiving part in the alignment direction.

6. The bag-sorting structure of the bag-making equipment as described in any one of claims 1 to 5, characterized in that, The bag receiving component receives the packaging bag in an upright position relative to the receiving part; and... The alignment direction is parallel to the width direction of the packaging bag, and the alignment end of each of the bag body alignment components abuts against the corresponding width edge of the packaging bag.

7. The bag-sorting structure of the bag-making equipment as described in claim 6, characterized in that, The at least one bag alignment component includes a first alignment component and a second alignment component, wherein the first alignment component and the second alignment component are spaced apart on the frame along a height direction perpendicular to the bag stacking direction; wherein... The alignment end of the first alignment component abuts against the corresponding side edge of the packaging bag at the midpoint of the height direction in the alignment direction; The alignment end of the second alignment member abuts against the corresponding side edge of the packaging bag in the alignment direction near the bag opening in the height direction.

8. The bag-sorting structure of the bag-making equipment as described in claim 6, characterized in that, The at least one bag alignment component is provided in at least one pair, and the at least one pair of bag alignment components are provided on both sides of the bag receiving component along the width direction of the bag body; wherein, The alignment end of each pair of bag body alignment components is capable of abutting against the corresponding side edge of the packaging bag in the alignment direction and pushing against the corresponding two side edges of the bag body along the width direction of the bag body.

9. The bag-sorting structure of the bag-making equipment as described in any one of claims 1 to 5, characterized in that, It also includes a bag limiting component, which can move along the bag stacking direction and abut against the outer side of the packaging bag on the downstream side of the receiving part in the bag stacking direction.

10. The bag-sorting structure of the bag-making equipment as described in claim 9, characterized in that, The bag-body limiting component includes a limiting drive mechanism and a limiting plate disposed on the limiting drive mechanism, wherein the end of the limiting plate extends toward the packaging bag on the receiving part to form a limiting part; wherein... When the packaging bags are stacked sequentially on the receiving part, the limiting drive mechanism moves the limiting plate along the stacking direction of the bags, and the limiting part continuously abuts against the outer wall of the packaging bag on the downstream side of the receiving part.

11. The bag-sorting structure of the bag-making equipment as described in claim 10, characterized in that, in The bag limiting component further includes a first limiting adjustment mechanism, which has a first adjustment end that can move along the alignment direction. The limiting plate is driven to the first adjustment end, and the first adjustment end can adjust the first stop position of the limiting plate relative to the receiving part in the alignment direction. And / or, The bag limiting component further includes a second limiting adjustment mechanism. The second limiting adjustment mechanism has a second adjustment end that can move along the bag stacking direction. The limiting plate is driven to the second adjustment end. The second adjustment end can adjust the second stop position of the limiting plate relative to the receiving part in the bag stacking direction.

12. The bag-sorting structure of the bag-making equipment as described in claim 11, characterized in that, The bag-body limiting component includes a first limiting adjustment mechanism and a second limiting adjustment mechanism; wherein... The limit drive mechanism is disposed on the second adjustment end, and the second limit adjustment mechanism is disposed on the first adjustment end.

13. The bag-sorting structure of the bag-making equipment as described in claim 11, characterized in that, in Both the first and second limit adjustment mechanisms include a drive motor and a lead screw and nut mechanism. The lead screw of the lead screw and nut mechanism is synchronously rotatably connected to the output shaft of the drive motor. The first or second adjustment end is a moving block with internal threads threaded onto the lead screw; or Both the first limit adjustment mechanism and the second limit adjustment mechanism include a drive motor and a slide rail slider mechanism. The slide rail of the slide rail slider mechanism extends along the alignment direction or the bag stacking direction, and the first adjustment end or the second adjustment end is a slider that is slidably disposed on the slide rail and is connected to the drive motor for transmission.

14. The bag-sorting structure of the bag-making equipment as described in claim 9, characterized in that, The bag includes at least one pair of bag limiting members disposed opposite each other in the alignment direction, each pair of bag limiting members being located on both sides of the receiving portion in the alignment direction, and the limiting portion of each bag limiting member abutting against a corresponding side portion of the outer side of the packaging bag on the most downstream side of the receiving portion.

15. The bag-sorting structure of the bag-making equipment as described in claim 9, characterized in that, The bag receiving component collects the packaging bag in an upright position on the receiving part; and... The receiving part is also provided with a receiving recess, and the bottom of each of the packaging bags is received in the receiving recess; and the width of the receiving recess in the alignment direction is adjustable.

16. The bag-sorting structure of the bag-making equipment according to any one of claims 1 to 5, characterized in that, It also includes a handle organizing component, which is located upstream of the inlet of the bag receiving component; wherein, The handle organizing component has an extension extending toward the packaging bag, the extension abutting against a corresponding sidewall of the packaging bag on the upstream side of the inlet of the bag receiving component.

17. The bag-sorting structure of the bag-making equipment as described in claim 16, characterized in that, The handle organizing component has a plate-like structure, and the extension is a bent portion formed by bending one end of the handle organizing component; and The handle organizing component can be positioned relative to the receiving part in the bag stacking direction and / or entry direction.

18. The bag-sorting structure of the bag-making equipment as described in any one of claims 1 to 5, characterized in that, It also includes a bag transfer component disposed on the frame downstream of the bag receiving component. The bag transfer component includes a bag holding mechanism that can move between the receiving part and the next work station. The bag holding mechanism is used to transfer a plurality of the packaging bags stacked on the receiving part to the next work station.

19. The bag-sorting structure of the bag-making equipment as described in claim 18, characterized in that, The bag transfer component further includes a swing mechanism and a transfer drive mechanism; wherein... The transfer drive mechanism is fixedly connected to the frame. One end of the swing mechanism is driven to the drive end of the transfer drive mechanism. The bag holding mechanism is driven to the other end of the swing mechanism. The transfer drive mechanism drives the swing mechanism to swing so that the bag holding mechanism moves between the receiving part and the next work station.

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