bag folding machine

Abstract

This utility model discloses a bag folding machine, including a bag pressing assembly, a crease guiding assembly, and an adjusting assembly. The bag pressing assembly is disposed on at least one side of the bag pressing space in a first direction, and can press the front of the packaging bag located in the bag pressing space along the first direction, causing the packaging bag to fold along the first direction. The crease guiding assembly includes a pair of crease guiding components respectively disposed on both sides of the bag pressing space in a second direction. The adjusting assembly is connected to the pair of crease guiding components and can adjust the posture of the pair of crease guiding components relative to the bag pressing space, so that the pair of crease guiding components accurately push against the creases on a pair of side walls of the packaging bag located in the bag pressing space along the second direction. Furthermore, the adjusting assembly can also adjust the posture of the pair of crease guiding components relative to the bag pressing space according to the size specifications, crease positions, and differences in bag body shape of different packaging bags, adapting to the bag folding requirements of different specifications of packaging bags.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, and in particular to a bag folding machine. Background Technology

[0002] In the packaging bag production process, the base material is mostly in an unfolded state after being cut, heat-sealed, and stamped. In this state, the packaging bags occupy a large amount of space, making them inconvenient for large-scale warehousing, assembly line transfer, and subsequent bundling and packaging operations. To reduce the stacking volume of packaging bags and improve the convenience of storage and transportation, the industry commonly uses bag folding machines to automatically fold and store the unfolded packaging bags, transforming them from an unfolded state to a neat folded state. This adapts to the operational needs of large-scale production, warehousing, and logistics, replacing the traditional manual folding method which is inefficient, has inconsistent folding accuracy, and is costly in terms of labor. This significantly improves the automation level and production efficiency of packaging bag folding processing.

[0003] Existing bag folding machines fold the packaging bag by squeezing the two front sides. Furthermore, the bag folding machine is equipped with a crease guide structure to guide the packaging bag to fold along the crease.

[0004] However, existing bag folding machines are typically only capable of folding packaging bags of fixed sizes and specifications. When production needs change, such as variations in the length and width of the packaging bag, the thickness of the side walls, the crease position, and the bag's dimensions, the crease guiding structure cannot accurately guide the creases, making it difficult to adapt to the folding requirements of other packaging bag sizes. This results in quality problems such as skewed creases, messy wrinkles, and asymmetrical folding during the folding process. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem that existing bag folding machines can only perform folding operations on packaging bags of fixed sizes and specifications. When production needs change, and the length and width dimensions, side wall thickness, crease position, and bag specifications of the packaging bags change, they cannot fully adapt to the folding requirements of packaging bags of other specifications.

[0006] To address the aforementioned technical problems, this utility model discloses a bag folding machine, comprising a bag pressing assembly, a crease guiding assembly, and an adjusting assembly. The bag pressing assembly is disposed on at least one side of the bag pressing space in a first direction, and the bag pressing assembly can press the front of the packaging bag located in the bag pressing space along the first direction.

[0007] The crease guiding assembly includes a pair of crease guiding members respectively disposed on both sides of the bag pressing space in a second direction, the pair of crease guiding members pushing against creases on a pair of sidewalls of the packaging bag located in the bag pressing space in the second direction.

[0008] The adjustment component is connected to a pair of crease guides and can adjust the orientation of the pair of crease guides relative to the pressure bag space; and the first direction and the second direction are perpendicular.

[0009] Using the above technical solution, the bag pressing component squeezes the front of the packaging bag in the pressing space from the first direction, causing the packaging bag to fold along the first direction. Furthermore, the adjusting component can adjust the posture of a pair of crease guiding components relative to the pressing space according to the size specifications, crease position, and bag shape differences of different packaging bags. This ensures that the pair of crease guiding components can always accurately abut against the creases on the side wall of the packaging bag, avoiding quality problems such as skewed creases, messy wrinkles, and asymmetrical folding during the folding process.

[0010] Therefore, this bag folding machine can not only improve the success rate of bag folding, but also adapt to the bag folding needs of different sizes of bags, making it compatible with production equipment for different bags and improving its adaptability.

[0011] The present invention also discloses a bag folding machine, wherein the adjusting component can adjust the spacing of at least one pair of crease guide components in a second direction.

[0012] Using the above technical solution, this bag folding machine does not require modification of the crease guide components when the width of the packaging bag changes. It only needs to adjust the spacing of a pair of crease guide components in the second direction by adjusting the components. The guide limit distance on both sides can be adjusted according to the width of the packaging bag, so that packaging bags of different widths can be accurately aligned and abutted, thereby stably guiding the packaging bag to fold along the crease.

[0013] The present invention also discloses a bag folding machine, which further includes an adjustable guide extending in a second direction, and a pair of crease guiding components slidably disposed on the adjustable guide.

[0014] Furthermore, the adjustment component is drivenly connected to a pair of crease guide components, and the pair of crease guide components move synchronously toward or away from each other along the second direction on the pitch guide.

[0015] Using the above technical solution, the adjustable guide component can guide the movement of a pair of crease guide components, avoiding problems such as offset, jamming, and tilting during the adjustment process, and ensuring the smooth movement of the crease guide components on both sides. At the same time, the adjusting component moves synchronously towards or away from the two sides of the component, realizing symmetrical adjustment of the spacing. After the adjustment is completed, the pair of folding guide components can still symmetrically guide the creases on both sides of the packaging bag, avoiding folding deviation on both sides.

[0016] The present invention also discloses a bag folding machine. The adjustment component includes an adjustment drive and an adjustment transmission component mounted on the frame. The output end of the adjustment drive is connected to the adjustment transmission component, and the adjustment transmission component has a pair of transmission parts, which are respectively connected to a pair of crease guide components.

[0017] By adopting the above technical solution, the power of the adjusting drive component drives the two crease guide components on both sides through a pair of transmission parts of the adjusting transmission component, thereby stably and synchronously driving the pair of crease guide components to move along the second direction. Compared with manual adjustment or single-sided driving, the power output is uniform and stable, which greatly ensures the consistency of the adjustment action of the pair of crease guide components and avoids the situation of misalignment or asymmetrical movement of the two sides.

[0018] The present invention also discloses a bag folding machine, wherein the adjusting drive component is configured as an adjusting drive motor, the adjusting transmission component is configured as a transmission screw extending along a second direction, and a pair of transmission parts are configured as a pair of threaded segments spaced apart in the second direction of the transmission screw, the pair of threaded segments having opposite directions of rotation and being respectively connected to a pair of crease guiding components.

[0019] Furthermore, by adjusting the transmission connection between the output end of the drive motor and one end of the transmission screw, the transmission screw can be driven to rotate.

[0020] The above technical solution uses a drive motor and a lead screw with two reverse thread sections. The structure is simple and compact, with high transmission accuracy and strong self-locking. When the motor drives the lead screw to rotate in the forward or reverse direction, the transmission characteristics of the two reverse threads can be used to accurately drive the crease guide components on both sides to move towards each other or away from each other. This can adapt to packaging bag specifications with slight size differences. The lead screw transmission has a good locking effect and can maintain a fixed distance after adjustment, preventing the crease guide components from shifting in the second direction during operation.

[0021] The present invention also discloses a bag folding machine, wherein each folding guide component includes a mounting base and a pushing component disposed on the mounting base.

[0022] The adjustable guide includes an adjustable guide rail arranged parallel to the transmission screw. One side of the mounting base is slidably mounted on the adjustable guide rail. The corresponding threaded section of the screw is threadedly engaged with the threaded hole on the mounting base. When the transmission screw rotates, the mounting base moves along the adjustable guide rail in conjunction with it. A pair of mounting bases can drive their respective pushing components to move synchronously in the second direction.

[0023] By adopting the above technical solution, a combined adjustable structure of screw drive and guide rail is formed through the cooperation structure of adjustable guide rail and transmission screw, which improves the stability and straightness of the movement of the mounting base and pushing component, effectively counteracts the radial stress in the screw drive process, and avoids the crease guide component from shaking or shifting during the adjustment process.

[0024] The present invention also discloses a bag folding machine, wherein the pushing component includes a side pushing member, which can push the folds on the corresponding side wall of the packaging bag in the bag pressing space along a second direction.

[0025] Furthermore, the push assembly also includes a side push drive member, which is disposed at the output end of the side push drive member. The side push drive member can drive the side push member to move relative to the mounting base in a second direction.

[0026] Using the above technical solution, the side-push drive can drive the side-pushing component to push against the crease on the corresponding side wall of the packaging bag within the bag-pressing space. This causes the side wall to fold inward along the crease when the two front faces of the packaging bag approach each other in the first direction. Furthermore, the side-push drive can adjust the pushing force and stroke to accommodate differences in side wall thickness and crease depth, ensuring that the side-pushing component closely conforms to the crease position of the packaging bag, avoiding problems such as incomplete pushing, shallow crease formation, and side wall wrinkles.

[0027] The present invention also discloses a bag folding machine, wherein the pushing component further includes a bottom pushing member, the end of which can push the bottom crease of the packaging bag in the bag pressing space along a third direction.

[0028] Furthermore, the pushing component also includes a bottom pushing drive, with the bottom pushing member disposed at the output end of the bottom pushing drive. The bottom pushing drive can drive the end of the bottom pushing member to translate and / or rotate relative to the mounting base, and the end of the bottom pushing member can push the bottom crease of the packaging bag upwards from a third party.

[0029] Among them, the third direction, the second direction, and the first direction are perpendicular to each other.

[0030] Using the above technical solution, the bottom pusher can precisely push the bottom crease of the packaging bag in a third direction, so that when the two front sides of the packaging bag are close to each other in the first direction, the bottom side folds inward along the crease on the bottom side, making the folding of the packaging bag more regular and reducing the risk of wrinkles on the bottom side during the folding process.

[0031] The present invention also discloses a bag folding machine, wherein the bottom push drive can drive the end of the bottom push member to translate in a third direction and / or rotate about a first direction relative to the mounting base.

[0032] Using the above technical solution, the bottom pusher can be precisely pushed onto the crease on the bottom of the packaging bag by means of translation or rotation, or a combination of translation and rotation.

[0033] The present invention also discloses a bag folding machine, wherein the bag pressing assembly includes a pair of pressing parts spaced apart along a first direction.

[0034] In this pair of pressing components, at least one of the pressing components can move in a first direction toward each other to press the corresponding front side of the packaging bag located within the pressing space.

[0035] Using the above technical solution, a pair of pushing components uniformly press the front of the packaging bag, avoiding uneven tightness or local bulging and collapse of the packaging bag.

[0036] The present invention also discloses a bag folding machine, wherein each pressing component includes a pressing belt assembly spaced apart in a first direction and extending in a third direction. The pressing belt assembly includes a plurality of support shafts spaced apart in a third direction, and both ends of each support shaft are slidably mounted on the frame in the first direction.

[0037] The frame is also equipped with a push drive component and a push transmission component located at the output end of the push drive component. The push transmission component is connected to a pair of push belt groups for transmission. The push drive component drives the push transmission component and links the pair of push belt groups to move towards or away from each other in the first direction.

[0038] Using the above technical solution, multiple support shafts firmly support the pressing belt, and the belt assembly is synchronously adjusted through the pressing drive component and the pressing transmission component, which can adapt to the pressing requirements of packaging bags of different thicknesses. It has the advantage of uniform pressing force, and the belt contact is a flexible pressing, which can protect the front of the packaging bag from damage and ensure the integrity of the product appearance.

[0039] The present invention also discloses a bag folding machine, wherein one end of one of the support shafts of each push belt assembly is connected to a conveyor drive component mounted on the frame.

[0040] The conveying drive unit can drive the support shaft of the pressing belt assembly and, in conjunction with the pressing belt assembly, convey the packaging bag from one end in the third direction into the pressing space, and output the folded packaging bag located in the pressing space from the other end in the third direction.

[0041] By adopting the above technical solution, the push belt assembly can not only push and press the packaging bag when folding, but also complete the conveying function of the packaging bag through the conveyor drive component. The bag folding machine does not need to be set up with an additional independent conveying mechanism, which simplifies the overall structure of the equipment and reduces the manufacturing cost and space occupied by the bag folding machine.

[0042] The present invention also discloses a bag folding machine, which includes a pair of side limiting members spaced apart on both sides of the bag pressing space along a second direction, the pair of side limiting members abutting against a pair of side walls of the packaging bag in the bag pressing space.

[0043] By adopting the above technical solution, a pair of side limiting components are used to limit the side wall of the packaging bag, which prevents the packaging bag from shifting left and right during the folding process, reduces bag shaking and misalignment during high-speed folding operations, improves the stability of continuous operation of the bag folding machine, and reduces the defect rate.

[0044] The present invention also discloses a bag folding machine, wherein a pair of side limiting members include a pair of side conveyor belts located on the frame and spaced apart on both sides of the bag pressing space in a second direction. The pair of side conveyor belts contact a pair of side walls of the packaging bag in the bag pressing space and convey the packaging bag in a third direction.

[0045] Alternatively, a pair of side limiting members may include limiting plates on the frame spaced apart along a second direction on both sides of the bag-pressing space.

[0046] Using the above technical solution, the side conveyor belt assembly can achieve side wall limiting and stable conveying of packaging bags in conjunction with the push belt assembly, which is suitable for continuous mass production scenarios.

[0047] The limiting plate has a simple structure and high positioning accuracy, making it suitable for folding processing scenarios with high folding accuracy requirements.

[0048] The present invention also discloses a bag folding machine, wherein the adjusting component can also be linked to the pushing component to move upward in a first direction or a third direction, or swing around a third direction.

[0049] By adopting the above technical solution, the adjustment component can move the pushing component upward in the first direction or a third direction, or swing around a third direction, according to the length, width and height specifications, crease position and bag curvature of the packaging bag, thereby adjusting the posture of the pushing component in all directions and greatly improving the applicability of the bag folding machine.

[0050] The beneficial effects of this utility model are as follows:

[0051] This utility model discloses a bag folding machine, including a bag pressing component, a crease guiding component, and an adjusting component. The bag pressing component is disposed on at least one side of the bag pressing space in a first direction, and can press the front of the packaging bag located in the bag pressing space along the first direction, so that the packaging bag folds along the first direction. The crease guiding component includes a pair of crease guiding parts disposed on both sides of the bag pressing space in a second direction. The adjusting component is connected to the pair of crease guiding parts and can adjust the posture of the pair of crease guiding parts relative to the bag pressing space, so that the pair of crease guiding parts accurately push against the creases on a pair of side walls of the packaging bag located in the bag pressing space along the second direction, avoiding quality problems such as skewed creases, messy wrinkles, and asymmetrical folding during the folding process. Furthermore, the adjusting component can adjust the posture of the pair of crease guiding parts relative to the bag pressing space according to the size specifications, crease positions, and differences in bag body shape of different packaging bags, adapting to the folding requirements of packaging bags of different specifications. Attached Figure Description

[0052] Figure 1 A three-dimensional structural diagram of a bag folding machine provided for an embodiment of this utility model;

[0053] Figure 2 A three-dimensional structural diagram of a bag-folding guide assembly and an adjusting assembly for a bag-folding machine provided in an embodiment of this utility model;

[0054] Figure 3 A three-dimensional structural schematic diagram of another bag-folding guide component and adjusting component of the bag-folding machine provided in an embodiment of the present utility model;

[0055] Figure 4 A three-dimensional structural diagram of the bag body pushing assembly and a pair of side limiting members of the bag folding machine provided in this embodiment of the utility model;

[0056] Figure 5 A three-dimensional structural diagram of a side limiting component, a bag folding guide assembly, and an adjustment assembly for a bag folding machine provided in an embodiment of this utility model;

[0057] Figure 6 A three-dimensional structural schematic diagram of another side limiting component, folding guide assembly, and adjusting assembly of the bag folding machine provided in this embodiment of the utility model.

[0058] Explanation of reference numerals in the attached figures:

[0059] 10. Bag folding machine;

[0060] 100. Bag body pushing assembly; 101. Pushing component; 110. Pushing belt assembly; 111. Support shaft; 112. Pushing belt; 113. Pushing drive component; 114. Conveying drive component;

[0061] 200. Crease guide assembly; 201. Crease guide component; 210. Mounting base; 211. Base plate; 212. Side push bracket; 213. Bottom push bracket;

[0062] 220. Push-off component;

[0063] 2210. Side push-off component; 2211. Side push-drive component; 2212. Side push-guide component;

[0064] 2220. Bottom pusher; 2221. Bottom pusher drive; 2222. Bottom pusher guide; 2223. Intermediate plate; 2224. Bottom pusher extension drive; 2225. Bottom pusher extension guide;

[0065] 300. Adjustment component; 310. Adjustment drive component; 311. Adjustment drive motor; 320. Adjustment transmission component; 321. Transmission screw;

[0066] 400. Adjustable pitch guide; 410. Adjustable pitch guide rail;

[0067] 500. Side limiting component;

[0068] 510. Side conveyor belt assembly; 511. Side support shaft; 512. Side conveyor belt; 513. Side conveyor drive unit;

[0069] 520. Limit plate;

[0070] Z, first direction; X, second direction; Y, third direction. Detailed Implementation

[0071] As mentioned in the background section, existing bag folding machines can only fold bags of fixed sizes and specifications. When production needs change, and the length, width, sidewall thickness, crease position, and bag size of the packaging bag change, they cannot fully adapt to the folding requirements of other bag shapes.

[0072] Therefore, this utility model provides a bag folding machine, which is equipped with an adjustment component to change the posture of a pair of crease guide components, thereby meeting the bag folding requirements of different sizes of packaging bags.

[0073] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0074] like Figure 1As shown, this embodiment provides a bag folding machine 10, including a bag body pushing component 100, a crease guiding component 200, and an adjusting component 300. The bag body pushing component 100, the crease guiding component 200, and the adjusting component 300 are usually mounted on the frame of the bag folding machine 10, and the frame has a bag pressing space. The bag folding machine 10 is usually located at the rear end of the forming equipment, and the unfolded packaging bag needs to be conveyed to the bag pressing space for folding.

[0075] The bag pressing assembly 100 is disposed on at least one side of the bag pressing space in the first direction Z, and the bag pressing assembly 100 can press the front of the packaging bag located in the bag pressing space along the first direction Z. For example, the bag pressing assembly 100 can press the corresponding front of the packaging bag on one side of the first direction Z, while the other side of the packaging bag is blocked by other components (such as conveying components or support platforms), thereby causing the packaging bag to fold. The bag pressing assembly 100 can also press the corresponding front of the packaging bag on both sides of the first direction Z, thereby causing the packaging bag to fold.

[0076] like Figure 2 and Figure 3 As shown, the crease guide assembly 200 includes a pair of crease guide members 201 respectively disposed on both sides of the bag pressing space in the second direction X. The pair of crease guide members 201 push against the creases on a pair of side walls of the packaging bag located in the bag pressing space along the second direction X.

[0077] It should be noted that the bag-pressing space usually has an inlet end at one end in the third direction Y and an outlet end at the other end. The packaging bag in the unfolded state enters the bag-pressing space from the inlet end and exits from the outlet end after the bag is folded. The first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0078] In this embodiment, the packaging bag can be conveyed by a dedicated pushing structure on the folding bag machine 10, or the conveying function can be integrated into the bag pressing assembly 100. The bag pressing assembly 100 conveys the packaging bag into the pressing space, and then the bag pressing assembly 100 pushes the packaging bag to fold along the first direction Z. After the packaging bag is folded, the bag pressing assembly 100 then conveys the packaging bag out of the pressing space. Furthermore, the bag pressing assembly 100 can press the front of the packaging bag by moving towards each other along the first direction Z, or the distance between the bag pressing assemblies 100 on both sides of the packaging bag in the first direction Z can gradually decrease along the conveying direction. The packaging bag is squeezed as it moves along the third direction Y, and is finally folded in the first direction Z. This embodiment is not limited to this only method.

[0079] It should be noted that the conveying direction is the Y direction, which is the direction from the inlet end of the self-pressurizing bag space to the outlet end.

[0080] In this embodiment, the bag pressing component 100 presses the front of the packaging bag in the pressing space from the first direction Z, causing the packaging bag to fold along the first direction Z. Furthermore, the adjusting component 300 is connected to a pair of crease guiding components 201, and the adjusting component 300 can adjust the posture of the pair of crease guiding components 201 relative to the pressing space according to the size specifications, crease position, and bag shape differences of different packaging bags. This ensures that the pair of crease guiding components 201 of the crease guiding component 200 can always accurately abut against the creases on the side wall of the packaging bag, avoiding quality problems such as skewed creases, messy wrinkles, and asymmetrical folding during the folding process.

[0081] Specifically, the adjustment component 300 can adjust the pair of crease guide components 201 to move towards or away from each other in the second direction X, or adjust the pair of crease guide components 201 to move synchronously in the first direction Z, or adjust the pair of crease guide components 201 to change the angle relative to the bag pressing space. This embodiment does not limit this only.

[0082] Therefore, this bag folding machine 10 can not only improve the success rate of bag folding, but also adapt to the bag folding needs of different sizes of bags, so that the bag folding machine 10 can be used with production equipment for different bags, thus improving the adaptability of the bag folding machine 10.

[0083] Specifically, the adjusting component 300 can adjust the spacing between a pair of crease guide components 201 in the second direction X. When the width of the packaging bag changes, there is no need to modify the crease guide components 201. It is only necessary to adjust the spacing between the pair of crease guide components 201 in the second direction X by adjusting the adjusting component 300. The guide limit distance on both sides can be adjusted according to the width of the packaging bag, so that packaging bags of different widths can be accurately aligned and abutted, thereby stably guiding the packaging bag to fold along the crease.

[0084] And, as Figure 2 and Figure 3 As shown, the bag folding machine 10 also includes an adjustment guide 400 extending along the second direction X, and a pair of crease guides 201 are slidably disposed on the adjustment guide 400.

[0085] The adjustment component 300 is drivenly connected to a pair of crease guide components 201, and the pair of crease guide components 201 move synchronously toward each other or away from each other along the second direction X on the adjustment guide 400.

[0086] In this embodiment, the adjustable guide 400 guides the movement of the pair of crease guides 201, preventing problems such as offset, jamming, and tilting during adjustment, and ensuring the smooth movement of the crease guides 201 on both sides. Simultaneously, the adjusting assembly 300 moves synchronously towards or away from the two sides of the components, achieving symmetrical adjustment of the spacing. After adjustment, the pair of folding guides can still symmetrically guide the creases on both sides of the packaging bag, preventing folding deviations on both sides.

[0087] More specifically, the adjustment assembly 300 includes an adjustment drive 310 and an adjustment transmission 320 mounted on the frame. The output end of the adjustment drive 310 is connected to the adjustment transmission 320, and the adjustment transmission 320 has a pair of transmission parts, which are respectively connected to a pair of crease guide parts 201.

[0088] It should be noted that the crease guide component 201 typically includes a mounting base 210 and a push-off component 220 disposed on the mounting base 210. The push-off component 220 can be used to push off creases on the packaging bag, such as side creases on the side of the packaging bag or bottom creases on the bottom surface of the packaging bag.

[0089] In this embodiment, the power of the adjusting drive member 310 drives the two crease guide members 201 on both sides respectively through a pair of transmission parts of the adjusting transmission member 320, thereby stably and synchronously driving the pair of crease guide members 201 to move along the second direction X. Compared with manual adjustment or single-sided driving, the power output is uniform and stable, which greatly ensures the consistency of the adjustment action of the pair of crease guide members 201 and avoids the situation of misalignment or asymmetrical movement of the two sides.

[0090] The adjusting drive component 310 is configured as an adjusting drive motor 311, the adjusting transmission component 320 is configured as a transmission screw 321 extending along the second direction X, and a pair of transmission parts are configured as a pair of threaded segments spaced apart on the second direction X of the transmission screw 321. The two pairs of threaded segments have opposite directions of rotation and are respectively connected to a pair of crease guide components 201.

[0091] Furthermore, the output end of the drive motor 311 is connected to one end of the transmission screw 321, which can drive the transmission screw 321 to rotate.

[0092] In this embodiment, the drive motor, in conjunction with the transmission structure of the lead screw with two reverse thread sections, has a simple and compact structure, high transmission accuracy, and strong self-locking capability. When the motor drives the lead screw to rotate in the forward or reverse direction, the transmission characteristics of the two reverse threads can be used to precisely drive the two crease guide components 201 on both sides to move towards each other or away from each other, which can adapt to packaging bag specifications with slight size differences. Moreover, the lead screw transmission has a good locking effect, and after adjustment, it can maintain a fixed distance, preventing the crease guide component 201 from shifting in the second direction X during operation.

[0093] The adjustable guide 400 includes an adjustable guide rail 410 arranged parallel to the transmission screw 321. Specifically, since the mounting base 210 has a relatively long length in the third direction Y, in order to improve the stability of the guide, multiple adjustable guide rails 410 can be arranged at intervals in the third direction Y, such as two adjustable guide rails 410. One side of the mounting base 210 is slidably arranged on the two adjustable guide rails 410. Furthermore, the corresponding threaded section of the transmission screw 321 is threadedly engaged with the threaded hole on the mounting base 210. When the transmission screw 321 rotates, the mounting base 210 moves along the adjustable guide rail 410 in conjunction with it. Moreover, a pair of mounting bases 210 can drive their respective pushing components 220 to move synchronously in the second direction X.

[0094] In this embodiment, the adjustable guide rail 410 and the transmission screw 321 cooperate to form a combined adjustable structure of screw drive and guide rail guidance, which improves the stability and straightness of the movement of the mounting base 210 and the pushing component 220, effectively counteracts the radial stress in the screw drive process, and avoids the crease guide component 201 from shaking or shifting during the adjustment process.

[0095] Of course, the adjusting drive component 310 can also be configured as a bidirectional pitch-adjusting cylinder, and the adjusting transmission component 320 can be configured as a symmetrically hinged linkage swing arm assembly. The bidirectional pitch-adjusting cylinder is fixedly mounted on the frame, and the two ends of the bidirectional pitch-adjusting cylinder are respectively hinged to the two sides of the linkage swing arm. The ends of the two sides of the linkage swing arm are respectively connected to a pair of mounting seats 210. When the bidirectional pitch-adjusting cylinder extends or retracts, the two sides of the mounting seats 210 are pushed and pulled synchronously by the two sides of the linkage swing arm, which drives a pair of crease guide components 201 to synchronously converge towards each other or move away from each other along the second direction X, thereby achieving symmetrical pitch adjustment.

[0096] Alternatively, the adjusting drive component 310 can be configured as a pitch-adjustable servo motor, and the adjusting transmission component 320 can be configured as a synchronous pulley set and an annular synchronous belt. The synchronous belt is mounted around the outside of the synchronous pulley set along the second direction X, and the two sides of the synchronous belt form opposite motion strokes. A pair of mounting seats 210 are respectively fixedly connected to the two opposite belt sides of the synchronous belt. The pitch-adjustable servo motor drives the synchronous pulley set to rotate, so that the synchronous belt continuously circulates. Utilizing the characteristic that the upper and lower sections of the belt move in opposite directions, a pair of crease guide components 201 are pulled to slide synchronously in opposite directions.

[0097] Of course, the adjustment component can also be equipped with a pair of adjustment drive components 310, such as a pair of linear motors or drive cylinders, which are respectively connected to a pair of mounting bases 210 for transmission. Each of them can adjust the position of the corresponding crease guide component 201 in the second direction X, thereby changing the spacing of the pair of crease guide components 201 in the second direction X.

[0098] Therefore, this embodiment does not limit the specific structure of the adjusting component connecting the pair of crease guide components 201 at the distance in the second direction X.

[0099] The specific structure and working principle of the push-off component 220 in the crease guide component 201 will be described in detail below.

[0100] Normally, such as Figure 2 and Figure 3 As shown, the pushing assembly 220 includes a side pushing member 2210, which is typically configured as a plate-like structure extending in a third direction Y. The side pushing member 2210 is movable in a second direction X, thereby pushing the crease on the corresponding side wall of the packaging bag within the bag-pressing space with its edge close to the pressing space. Of course, the side pushing member 2210 can also be configured as a rod-like structure or a wedge-shaped block structure, with the wedge-shaped block having an outwardly protruding edge for pushing the crease of the packaging bag.

[0101] Furthermore, the mounting base 210 includes a base plate 211 and a side push bracket 212 disposed on the base plate 211. The pushing assembly 220 also includes a side push drive member 2211, which is disposed on the side push bracket 212. The side push bracket 212 is provided with a side push guide member 2212 (e.g., a guide rail or guide groove) extending along the second direction X. The side push member 2210 is slidably disposed on the side push guide member 2212 and connected to the output end of the side push drive member 2211. The side push drive member 2211 can drive the side push member 2210 to move relative to the mounting base 210 along the second direction X. Specifically, it is a power source such as a linear motor or a drive cylinder commonly used in the art. This embodiment does not limit it to a single power source.

[0102] In this embodiment, the side push drive 2211 can drive the side push abutment 2210 to push against the crease on the corresponding side wall of the packaging bag within the bag compression space, thereby causing the side wall to fold inward along the crease when the two front faces of the packaging bag approach each other along the first direction Z. Furthermore, the side push drive 2211 can adjust the pushing force and pushing stroke according to the differences in side wall thickness and crease depth of different packaging bags, ensuring that the side push abutment 2210 closely fits the crease position of the packaging bag, avoiding problems such as incomplete pushing, shallow crease formation, and side wall wrinkles.

[0103] Furthermore, in order to improve the success rate of folding packaging bags, such as Figure 2 and Figure 3 As shown, the push-off component 220 may also include a bottom push-off member 2220, the end of which can push the bottom crease of the packaging bag in the third direction Y along the third direction.

[0104] Furthermore, the mounting base 210 also includes a bottom push bracket 213 disposed on the base plate 211, and the push assembly 220 also includes a bottom push drive member 2221 disposed on the bottom push bracket 213. The bottom push member 2220 is disposed at the output end of the bottom push drive member 2221. The bottom push drive member 2221 can drive the end of the bottom push member 2220 to translate and / or rotate relative to the mounting base 210. The end of the bottom push member 2220 can push the bottom crease of the packaging bag in the third direction Y.

[0105] In this embodiment, the bottom pusher 2220 can precisely push the bottom crease of the packaging bag in the third direction Y, so that when the two front sides of the packaging bag are close to each other in the first direction Z, the bottom side folds inward along the crease on the bottom side, making the folding of the packaging bag more regular and reducing the risk of wrinkles on the bottom side during the folding process.

[0106] Specifically, such as Figure 2 As shown, the bottom push drive 2221 can drive the end of the bottom push member 2220 to translate relative to the mounting base 210 along the third direction Y. The bottom push bracket 213 is provided with a bottom push guide 2222 (e.g., a guide rail or guide groove) extending along the third direction Y. The bottom push guide 2222 can also be slidably provided with an intermediate plate 2223. The bottom push member 2220 is provided on the intermediate plate 2223. Furthermore, the intermediate plate 2223 is also provided with a bottom push extension drive 2224 and a bottom push extension guide 2225 extending along the second direction X. The bottom push member 2220 is provided on the bottom push extension guide 2225 (e.g., a guide rail or guide groove) and is drively connected to the output end of the bottom push extension drive 2224. The bottom push member 2220 is provided with a plate-like structure. The device has a connecting portion extending in the second direction X and a hook portion located on the side of the connecting portion near the bag-pressing space. The hook portion extends in the third direction Y. Under normal conditions, the hook portion of the bottom pusher 2220 is located outside the bag-pressing space in the second direction X to avoid interfering with the conveying of the packaging bag in the third direction Y. Until the packaging bag is located in the bag-pressing space, the bottom pusher extension drive 2224 drives the bottom pusher 2220 to move along the bottom pusher extension guide 2225 into the bag-pressing space and aligns with the crease on the bottom surface of the packaging bag in the third direction Y. Then, during the folding process of the packaging bag, the bottom pusher drive 2221 drives the intermediate plate 2223 and moves the bottom pusher 2220 toward the bottom surface of the packaging bag in the third direction Y, thereby pushing against the crease on the bottom surface of the packaging bag.

[0107] like Figure 3As shown, the bottom push drive 2221 can also drive the end of the bottom push member 2220 to rotate relative to the mounting base 210 about the first direction Z. The bottom push drive 2221 includes a rotary motor mounted on the bottom push bracket 213. The axis of the rotary motor is parallel to the first direction Z. The bottom push member 2220 is mounted at the output end of the rotary motor. During the folding process of the packaging bag, the rotary motor drives the bottom push member 2220 to rotate about the first direction Z, so that the hook of the bottom push member 2220 extends into the bag pressing space.

[0108] Of course, under the premise that the bottom push drive 2221 drives the end of the bottom push member 2220 to rotate relative to the mounting base 210 around the first direction Z, the bottom push drive 2221 and the bottom push member 2220 can also move along the third direction Y, so that the bottom push member 2220, which rotates into the bag pressing space, can better act on the crease on the bottom surface of the packaging bag.

[0109] In other words, the bottom pusher 2220 can be precisely pushed against the crease on the bottom of the packaging bag by means of translation, rotation, or a combination of translation and rotation.

[0110] The following is a detailed description of the specific structure of the bag body pushing component 100 in the bag folding machine 10.

[0111] like Figure 4 As shown, in this embodiment, the bag pushing assembly 100 includes a pair of pushing members 101 arranged at intervals along the first direction Z.

[0112] In this embodiment, at least one of the pair of pressing members 101 can move in a first direction Z toward a direction closer to each other to squeeze the corresponding front side of the packaging bag located in the pressing space. In this embodiment, the pair of pressing members 101 move synchronously in the first direction Z toward a direction closer to each other.

[0113] A pair of pressing components 101 evenly press the front of the packaging bag to avoid uneven tightness or local bulging and collapse of the packaging bag.

[0114] Specifically, such as Figure 4 As shown, each pressing component 101 includes a pressing belt assembly 110 spaced apart in the first direction Z and extending in the third direction Y. The pressing belt assembly 110 includes a plurality of support shafts 111 spaced apart in the third direction Y, and a plurality of pressing belts 112 sleeved on the plurality of support shafts 111. The plurality of pressing belts 112 can be spaced apart in the second direction X. Specifically, two support shafts 111 can be provided. The two ends of each support shaft 111 can be slidably mounted on the frame in the first direction Z.

[0115] The frame is also equipped with a push drive 113 and a push transmission component located at the output end of the push drive 113. The push transmission component can be a transmission belt assembly commonly used in the art. The transmission belt of the transmission belt assembly is connected to a pair of push belt assemblies 110 respectively on the opposite sides of the bag body. The push drive 113 drives the push transmission component and links the pair of push belt assemblies 110 to move towards or away from each other along the first direction Z.

[0116] In this embodiment, multiple support shafts 111 stably support the push belt 112, and the synchronous adjustment of the belt assembly is achieved through the push drive component 113 and the push transmission component, which can adapt to the pressing requirements of packaging bags of different thicknesses. It has the advantage of uniform pressing force, and the belt contact is a flexible pressing, which can protect the front of the packaging bag from damage and ensure the integrity of the product appearance.

[0117] Furthermore, one end of one of the support shafts 111 of each push belt assembly 110 is connected to the conveyor drive 114 mounted on the frame.

[0118] The conveying drive unit 114 can drive the support shaft 111 of the pressing belt assembly 110 and link the pressing belt 112 of the pressing belt assembly 110 to convey the packaging bag from one end of the third party to the Y into the pressing space, and output the folded packaging bag located in the pressing space from the other end of the third party to the Y.

[0119] In this embodiment, the push belt assembly 110 can both push and press the packaging bag when folding, and can also drive the packaging bag to complete the conveying function through the conveying drive component 114. The bag folding machine 10 does not need to be set up with an additional independent conveying mechanism, which simplifies the overall structure of the equipment and reduces the manufacturing cost and space occupied by the bag folding machine 10.

[0120] Of course, when one of the two pushing components 101 moves toward each other in the first direction Z while the other pushing component 101 remains stationary in the first direction Z, the crease on the side of the packaging bag moves along the first direction Z as it is folded. Thus, the adjusting component 300 can adjust the pushing component 220 to move synchronously in the first direction Z. For example, auxiliary adjusting drive members (not shown in the figure) connected to the side pushing bracket 212 and the bottom pushing bracket 213 are respectively provided on the base plate 211 of the mounting base 210. The auxiliary adjusting drive members can move the side pushing bracket 212 and the bottom pushing bracket 213 in the first direction Z, thereby making the side pushing component 2210 and the bottom pushing component 2220 move in the first direction Z to match the corresponding crease.

[0121] Of course, the adjustment component 300 can also change the angle of the side pusher 2210 and the bottom pusher 2220 relative to the bag pressing space according to the actual crease design of the packaging bag.

[0122] In this embodiment, as Figure 5 and Figure 6 As shown, the bag folding machine 10 also includes a pair of side limiting members 500 spaced at intervals along the second direction X on both sides of the bag pressing space. The pair of side limiting members 500 abut against a pair of side walls of the packaging bag in the bag pressing space. The pair of side limiting members 500 limit the side walls of the packaging bag, prevent the packaging bag from shifting left and right during the folding process, reduce bag shaking and misalignment during high-speed folding operations, improve the stability of continuous operation of the bag folding machine 10, and reduce the defect rate.

[0123] It should be noted that the pair of side limiting members 500 are closer to the bag pressing space than the corresponding pushing component 220. In order to facilitate the pushing component 220 to enter the bag pressing space, each side limiting member 500 usually has an avoidance opening for the pushing component 220 to enter the bag pressing space.

[0124] Specifically, such as Figure 5 As shown, a pair of side limiting members 500 includes a pair of side conveyor belt groups 510 located on the frame and spaced apart along the second direction X on both sides of the bag pressing space. The pair of side conveyor belt groups 510 contact a pair of side walls of the packaging bag in the bag pressing space and convey the packaging bag in the third direction Y. The side conveyor belt groups 510 can realize the function of side wall limiting and stable conveying of packaging bags in cooperation with the push belt group 110, which is suitable for continuous mass production scenarios.

[0125] Furthermore, each side conveyor belt group 510 includes a plurality of side support shafts 511 spaced apart along the third direction Y and a side conveyor belt 512 sleeved on the plurality of side support shafts 511. For example, the side conveyor belt group 510 includes two side support shafts 511, and a side conveyor drive member 513 is also provided on the frame and is connected to one of the side support shafts 511 for transmission. In addition, a pair of side conveyor belts 512 are sleeved on the plurality of side support shafts 511 at intervals in the first direction Z, and an avoidance opening is formed between the pair of side conveyor belts 512.

[0126] like Figure 6 As shown, the pair of side limiting members 500 may also include limiting plates 520 that are spaced apart on both sides of the bag pressing space along the second direction X on the frame. The limiting plates 520 have a simple structure and high positioning accuracy, and can be adapted to folding processing scenarios with high folding accuracy requirements.

[0127] In this embodiment, the adjustment component 300 can adjust the posture of the pushing component 220 in all directions according to parameters such as the length, width and height of the packaging bag, the position of the crease, and the curvature of the bag shape, thereby greatly improving the applicability of the bag folding machine 10.

[0128] Furthermore, each limiting plate 520 forms an avoidance opening extending along the third direction Y at its center in the first direction Z.

[0129] In addition, the spacing between the pair of side limiting members 500 in the second direction X also needs to be adjusted according to the width of the corresponding packaging bag. Therefore, the pair of side limiting members can also be set on the mounting base 210, and the spacing in the second direction X can be adjusted together with the pair of crease guiding members 201.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0134] 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.

[0135] 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 folding machine, characterized in that, include A bag body pushing assembly is disposed in a first direction on at least one side of a bag pressing space, and the bag body pushing assembly can press the front of the packaging bag located in the bag pressing space along the first direction; A crease guiding assembly includes a pair of crease guiding members respectively disposed on both sides of the pressing space in a second direction, the pair of crease guiding members pushing against creases on a pair of sidewalls of the packaging bag located in the pressing space along the second direction; An adjustment component, which is connected to the pair of crease guides and is capable of adjusting the posture of the pair of crease guides relative to the compression space; and The first direction and the second direction are perpendicular.

2. The bag folding machine as described in claim 1, characterized in that, The adjustment component can at least adjust the spacing between the pair of crease guides in the second direction.

3. The bag folding machine as described in claim 2, characterized in that, The bag folding machine further includes an adjusting guide extending along the second direction, and the pair of crease guiding components are slidably disposed on the adjusting guide; and The adjustment component is connected to the pair of crease guide components, and the pair of crease guide components move synchronously toward or away from each other along the second direction on the adjustment guide.

4. The bag folding machine as described in claim 3, characterized in that, The adjustment assembly includes an adjustment drive and an adjustment transmission component mounted on the frame. The output end of the adjustment drive is connected to the adjustment transmission component, and the adjustment transmission component has a pair of transmission parts, which are respectively connected to the pair of crease guide components.

5. The bag folding machine as described in claim 4, characterized in that, The adjusting drive component is configured as an adjusting drive motor, the adjusting transmission component is configured as a transmission screw extending along the second direction, and the pair of transmission parts are configured as a pair of threaded segments spaced apart on the transmission screw in the second direction. The pair of threaded segments have opposite directions of rotation and are respectively connected to the pair of crease guide components. The output end of the adjustable drive motor is connected to one end of the transmission lead screw, which can drive the transmission lead screw to rotate.

6. The bag folding machine as described in claim 5, characterized in that, Each of the crease guide components includes a mounting base and a push-off assembly disposed on the mounting base; wherein The adjustable guide includes an adjustable guide rail arranged side by side with the transmission screw, one side of the mounting base is slidably disposed on the adjustable guide rail, and the corresponding threaded section of the transmission screw is threadedly engaged with the threaded hole on the mounting base. The rotation of the transmission screw causes the mounting base to move along the adjustable guide rail, and a pair of mounting bases can drive their respective pushing components to move synchronously along the second direction.

7. The bag folding machine as described in claim 6, characterized in that, in The pushing assembly includes a side pushing member, which can push against the crease on a corresponding side wall of the packaging bag within the bag-pressing space along the second direction; and The pushing assembly further includes a side pushing drive, which is disposed at the output end of the side pushing drive. The side pushing drive can drive the side pushing drive to move relative to the mounting base in the second direction.

8. The bag folding machine as described in claim 7, characterized in that, in The pushing assembly further includes a bottom pushing member, the end of which can push against the bottom crease of the packaging bag within the bag-pressing space in a third direction; and The pushing assembly also includes a bottom pushing drive, the bottom pushing component is disposed at the output end of the bottom pushing drive, the bottom pushing drive can drive the end of the bottom pushing component to translate and / or rotate relative to the mounting base, and the end of the bottom pushing component can push the bottom crease of the packaging bag upward in a third direction; in The third direction, the second direction, and the first direction are perpendicular to each other.

9. The bag folding machine as described in claim 8, characterized in that, The bottom push drive can drive the end of the bottom push member to translate relative to the mounting base along the third direction and / or rotate about the first direction.

10. The bag folding machine as described in claim 8, characterized in that, The bag body pushing assembly includes a pair of pushing components spaced apart along the first direction; wherein At least one of the pair of pressing members can move in the first direction toward each other to squeeze the corresponding front of the packaging bag located within the bag-pressing space.

11. The bag folding machine as described in claim 10, characterized in that, Each of the pressing components includes a pressing belt assembly spaced apart in the first direction and extending along the third direction. The pressing belt assembly includes a plurality of support shafts spaced apart along the third direction, and both ends of each support shaft are slidably mounted on the frame along the first direction. in The frame is also provided with a push drive and a push transmission component located at the output end of the push drive. The push transmission component is connected to a pair of push belt groups for transmission. The push drive drives the push transmission component and, in conjunction with the pair of push belt groups, moves them toward or away from each other along the first direction.

12. The bag folding machine as described in claim 11, characterized in that, One end of one of the support shafts of each push belt assembly is connected to a conveyor drive component mounted on the frame; wherein The conveying drive unit can drive the support shaft of the pressing belt assembly and, in conjunction with the pressing belt assembly, convey the packaging bag from one end in the third direction into the pressing space, and output the folded packaging bag located in the pressing space from the other end in the third direction.

13. The bag folding machine as described in claim 8, characterized in that, The bag folding machine includes a pair of side limiting members spaced apart on both sides of the bag pressing space along the second direction, the pair of side limiting members abutting against a pair of side walls of the packaging bag within the bag pressing space.

14. The bag folding machine as described in claim 13, characterized in that, The pair of side limiting members include a pair of side conveyor belts located on the frame and spaced apart on both sides of the bag-pressing space along the second direction. The pair of side conveyor belts contact a pair of side walls of the packaging bag within the bag-pressing space and convey the packaging bag in the third direction; or The pair of side limiting members include limiting plates on the frame that are spaced apart on both sides of the bag pressing space along the second direction.

15. The bag folding machine according to any one of claims 8 to 14, characterized in that, The adjustment component can also be linked to the pushing component to move upward in the first direction or a third direction, or to swing around the third direction.

Images