Bag feeding device for product packaging

Abstract

The utility model discloses a bag feeding device for product packaging. The bag feeding device comprises a temporary storage unit. The caching unit comprises a bag conveying platform; the whole limiting plate is obliquely arranged above the bag conveying platform, a bag outlet is formed by the bottom of the limiting plate and the upper surface of the bag conveying platform, a buffer area is formed by the first side portion of the limiting plate and the upper surface of the bag conveying platform, and a bag taking area is formed by the second side portion of the limiting plate and the upper surface of the bag conveying platform; the bag feeding device further comprises a bag pressing unit, the bag pressing unit is arranged in the cache area, the bag pressing unit comprises a guide rod, and the guide rod is vertically arranged on the upper surface of the bag conveying platform; the bag pressing part is in sliding connection with the guide rod, and the bag pressing part is connected with the top of the guide rod through a first spring. Through the action of the first spring, the bag pressing part is pressed on the upper surface of a packaging bag stack, under the pressure action of the bag pressing part, the situation that an upper-layer packaging bag is bent due to uneven stress is avoided, and meanwhile the situation that the packaging bag with certain elasticity is ejected out of the buffer area after being bent to a certain degree is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of product packaging, in particular to a bagging device for product packaging. Background Art

[0002] Cold rabbit, a local delicacy steeped in rich historical and cultural heritage and unique flavor, has long been widely loved and highly praised by consumers for its alluring appearance, distinctive texture, and rich flavor combinations. With the rapid development and widespread application of contemporary science and technology, the production and processing of cold rabbit is undergoing a significant shift from traditional manual labor to mechanized and standardized production. This transformation not only aims to significantly improve production efficiency but also ensures that each cold rabbit product maintains consistent high quality, meeting the market's stringent requirements for food safety and quality stability.

[0003] In this transformation, the importance of packaging, the final, crucial step in the journey of cold-eaten rabbit products from the production line to the consumer's table, has become increasingly prominent. In particular, bag-feeding bag filling equipment, as a highly efficient and automated packaging solution, automates a series of operations, including bag delivery, opening, filling, and sealing, significantly improving packaging efficiency and precision. The bag-feeding device, a core component of bag-feeding bag filling equipment's automation, is responsible for automatically feeding bags into the packaging process. Its performance directly impacts the efficiency and stability of the entire packaging line.

[0004] However, existing bag loading devices still have significant shortcomings in practical applications. Specifically, when the number of bags stored in the buffer area is large, the gravity of the bag stack itself can effectively prevent the upper bag from moving with the bottom bag when it is transported to the bag retrieval area. However, as the number of bags gradually decreases, the overall weight of the bag stack decreases accordingly, and gravity alone can no longer maintain the stability of the upper bag. In this case, during the conveying process, due to the electrostatic force and friction between the bags, the upper bag tends to move with the bottom bag. Although the design of the limit plate can prevent the bags from overlapping and moving to a certain extent, it is difficult to prevent the upper bag from bending due to uneven force, affecting the flatness of the bag. When a bag with a certain degree of elasticity bends to a certain extent and the elastic force becomes greater than the friction and electrostatic force, it may pop out of the buffer area when it returns. This not only affects the continuity and stability of the packaging process, but also may cause damage and waste of the bag, thereby increasing production costs and reducing the overall efficiency of the production line. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a bag loading device for product packaging, comprising a buffer unit and a bag taking unit, wherein the bag taking unit is arranged on one side of the buffer unit;

[0006] The cache unit includes:

[0007] Bag delivery platform;

[0008] A limiting plate is integrally arranged obliquely above the bag delivery platform, wherein the bottom of the limiting plate and the upper surface of the bag delivery platform form a bag outlet for only a single packaging bag to pass through, a first side portion of the limiting plate and the upper surface of the bag delivery platform form a buffer area for accommodating a plurality of packaging bags in a limited quantity, and a second side portion of the limiting plate and the upper surface of the bag delivery platform form a bag taking area for a bag taking unit to take away the packaging bags;

[0009] A bag feeding assembly, through which the packaging bag located at the bag outlet is driven to move from the buffer area to the replacement area;

[0010] The first side portion is a side where the limiting plate forms an acute angle with the upper surface of the bag feeding platform, and the second side portion is a side where the limiting plate forms an obtuse angle with the upper surface of the bag feeding platform;

[0011] The bag loading device further includes a bag pressing unit, which is arranged in the buffer area and includes:

[0012] A guide rod, the guide rod being vertically arranged on the upper surface of the bag delivery platform;

[0013] The bag pressing part is slidably connected to the guide rod and is connected to the top of the guide rod through a first spring. The bag pressing part is lifted by pulling the bag pressing part to compress the first spring.

[0014] Furthermore, the bag pressing part includes:

[0015] A connecting portion, an end of which is penetrated by the guide rod and has a clearance fit with the guide rod;

[0016] A pressure rod is mounted on the connecting portion, wherein the pressure rods are arranged in an array, and the pressure rods in the array are equidistantly arranged along the length direction of the connecting portion;

[0017] A pressing plate is fixed to the side of the pressing rod away from the connecting portion.

[0018] When placing a stack of packaging bags, it is only necessary to lift the bag pressing part vertically upwards and place the stack of packaging bags between the bag pressing part and the bag feeding platform. When the cache unit feeds the packaging bags from the cache area to the bag retrieval area, due to the action of the first spring, the bag pressing part is pressed on the upper surface of the stack of packaging bags. Even if the number of packaging bags is reduced and the quality is reduced, under the pressure of the bag pressing part, the upper packaging bags will not bend due to uneven force, affecting the flatness of the packaging bags. At the same time, it avoids the situation where the packaging bags with a certain elasticity pop out of the cache area after being bent to a certain extent and the elastic force is greater than the friction force and electrostatic force.

[0019] Furthermore, the connecting part includes a skateboard, the end of which is penetrated by the guide rod and is loosely fitted with the guide rod. A handle is provided on the upper surface of the skateboard, and a plurality of downwardly protruding mounting blocks are provided on the lower surface of the skateboard. The mounting block is provided with a socket matching the pressure rod away from the end of the skateboard.

[0020] By holding the handle, it is convenient to pull the entire bag pressing part to move vertically. By setting a mounting block that protrudes vertically downward, the pressing rod is inserted into the socket at the bottom end of the mounting block and fixed with bolts. This makes disassembly and assembly convenient while avoiding interference of other parts of the mechanism with the vertical sliding process of the bag filling part.

[0021] Furthermore, the bag pressing part also includes a tail side limiting part, which is arranged on the side of the packaging bag stack away from the limiting plate in the buffer area, and the tail side limiting part is in contact with the side of the packaging bag stack away from the limiting plate.

[0022] Furthermore, the tail side limiting portion includes a baffle rod, which passes through a pressure plate arranged on the side of the pressure rod away from the limiting plate and is gap-matched with the pressure plate. A pad parallel to the upper surface of the bag delivery platform is provided at the bottom of the baffle rod.

[0023] The rear side limiting portion is used to limit the side of the packaging bag stack away from the limiting plate to prevent the packaging bag stack from moving toward the side away from the limiting plate during the bag feeding process, so that the packaging bag stack is kept in the optimal bag feeding position.

[0024] Furthermore, the pressure rod includes:

[0025] a fixing rod, one end of which is fixed in the socket;

[0026] The movable rod is partially wrapped by the fixed rod, the movable rod is slidably connected to the fixed rod, a second spring is sleeved on the outer side of the movable rod, and the movable rod is pulled outward to compress the second spring.

[0027] By pulling the movable rod to pull it out, the movable rod will compress the second spring when pulled, and the compressed second spring will push the movable rod inward, so that the tail limit part is close to the tail side of the packaging bag stack to accommodate packaging bags of different lengths.

[0028] Furthermore, the bag delivery component includes:

[0029] first power unit;

[0030] A bag feeding wheel, the bag feeding wheel being entirely arranged below the bag feeding platform, the upper portion of the bag feeding wheel passing through the bag feeding platform and exposed into the buffer area, and the bag feeding wheel being driven to rotate by a first power device;

[0031] The bag feeding conveyor belt is installed as a whole under the bag feeding platform. The upper part of the bag feeding conveyor belt passes through the bag feeding platform so that part of the bag feeding conveyor belt is exposed in the buffer area, and part of it is exposed in the bag taking area. The bag feeding conveyor belt is driven to move by the first power device.

[0032] The buffer area of ​​the utility model can be used to place a stack of packaging bags formed by overlapping and stacking multiple packaging bags. The packaging bag at the bottom of the packaging bag stack is driven to move by the bag feeding component, so that a single packaging bag is moved from the buffer area to the bag taking area, thereby realizing the separation of the packaging bags one by one and sending them to the bag taking area for the bag taking unit to take away the packaging bags one by one, effectively avoiding the situation that the suction or clamping force is too large and the adjacent packaging bags below are often lifted up together, thereby causing the packaging bags to scatter.

[0033] Furthermore, the cache unit further includes:

[0034] a first limiting roller, which is arranged above a portion of the bag feeding conveyor belt arranged in the bag taking area;

[0035] a second limiting roller, the second limiting roller being arranged on a side of the first guide roller away from the limiting plate;

[0036] a third limiting roller, the third limiting roller being arranged between the first limiting roller and the second limiting roller;

[0037] The limiting portion is arc-shaped and extends in an arc shape from a side of the first limiting roller away from the limiting plate to a side of the second limiting roller close to the limiting plate.

[0038] By limiting the packaging bag with various limiting components, the flatness of the packaging bag can be effectively ensured.

[0039] Furthermore, two groups of side limit plates are provided in the buffer area, and the two groups of side limit plates are installed oppositely on the upper surface of the bag delivery platform.

[0040] The utility model has the following advantages:

[0041] The buffer area of ​​the utility model can be used to place a stack of packaging bags formed by overlapping and stacking multiple packaging bags. The packaging bag at the bottom of the packaging bag stack is driven to move by the bag feeding component, so that a single packaging bag is moved from the buffer area to the bag taking area, thereby realizing the separation of the packaging bags one by one and sending them to the bag taking area for the bag taking unit to take away the packaging bags one by one, effectively avoiding the situation that the suction or clamping force is too large and the adjacent packaging bags below are often lifted up together, thereby causing the packaging bags to scatter. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural diagram of the bag loading mechanism;

[0043] Figure 2 yes Figure 1 A schematic structural diagram of the buffer unit in the bag loading mechanism shown;

[0044] Figure 3 yes Figure 2 A top view of the cache unit shown;

[0045] Figure 4 yes Figure 2 A longitudinal cross-sectional schematic diagram of the cache unit shown;

[0046] Figure 5 yes Figure 1 The schematic diagram of the structure of the bag pressing unit in the bag loading mechanism shown;

[0047] Figure 6 yes Figure 5 The schematic structural diagram of the bag pressing part in the bag pressing unit is shown;

[0048] Figure 7 yes Figure 6 A schematic structural diagram of the connecting portion in the bag pressing portion is shown;

[0049] Figure 8 yes Figure 6 The schematic diagram of the structure of the pressure rod in the bag pressing part is shown;

[0050] Figure 9 yes Figure 8 A partially cutaway schematic diagram of the compression rod shown;

[0051] Figure 10 yes Figure 5 The working diagram of the bag pressing unit shown;

[0052] Figure 11 yes Figure 1 The schematic diagram of the structure of the bag taking unit in the bag loading mechanism shown;

[0053] Figure 12 yes Figure 11 A schematic structural diagram of the clamping mechanism in the bag taking unit shown;

[0054] Figure 13 yes Figure 12 Schematic diagram of the bag taking state of the clamping mechanism shown;

[0055] Figure 14 yes Figure 12 Schematic diagram of the bag feeding state of the clamping mechanism shown;

[0056] In the picture:

[0057] 100, buffer unit; 110, bag feeding platform; 111, adjustment slot; 120, limit plate; 130, side mounting plate; 140, side limit plate; 150, bag feeding assembly; 151, first power unit; 152, bag feeding wheel; 153, bag feeding conveyor belt; 160, first limit roller; 170, limit portion; 180, second limit roller; 190, third limit roller;

[0058] 200, bag taking unit; 210, fixing part; 211, guide groove; 220, second connecting rod; 230, first connecting rod; 240, clamping mechanism; 241, swing arm; 242, second power device; 243, connecting block; 244, movable splint; 255, fixed splint; 250, third power device.

[0059] 300, bag pressing unit; 310, guide rod; 320, first spring; 330, bag pressing portion; 331, pressing rod; 331A, fixed rod; 331B, movable rod; 331C, second spring; 332, connecting portion; 332A, slide plate; 332B, handle; 332C, mounting block; 332D, socket; 340, tail-side limit portion;

[0060] 400. Stack of packaging bags. DETAILED DESCRIPTION

[0061] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0062] In this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] As described in the background, existing bag-feeding packaging equipment still faces several pressing challenges. Specifically, these devices typically rely on a robotic arm driven by a vacuum suction cup or gripper to clamp bags from the stack to a bag removal point. However, in actual operation, this approach presents a significant drawback: when the robotic arm attempts to remove a bag from the surface, the excessive suction or gripping force often pulls up adjacent bags below, causing them to scatter. This not only impacts the smoothness of the packaging process but can also lead to bag waste and product contamination, ultimately reducing production efficiency and overall product quality.

[0064] Example 1:

[0065] Therefore, in order to solve the above technical problems existing in the prior art, this embodiment provides a bagging device for product packaging, such as Figure 1 As shown, it includes a buffer unit 100 and a bag taking unit 200, and the bag taking unit is arranged on one side of the buffer unit;

[0066] like Figure 2 、 3 As shown, the cache unit 100 includes:

[0067] The bag delivery platform 110 is arranged horizontally as a whole;

[0068] A limiting plate 120 is disposed obliquely above the bag delivery platform. The bottom of the limiting plate and the upper surface of the bag delivery platform form a bag outlet for only a single packaging bag to pass through. The first side of the limiting plate and the upper surface of the bag delivery platform form a buffer area for accommodating a limited number of packaging bags. The second side of the limiting plate and the upper surface of the bag delivery platform form a bag taking area for a bag taking unit to take away packaging bags.

[0069] The bag feeding assembly 150 drives the packaging bag at the bag outlet to move from the buffer area to the replacement area;

[0070] The first side portion is a side where the limiting plate forms an acute angle with the upper surface of the bag feeding platform, and the second side portion is a side where the limiting plate forms an obtuse angle with the upper surface of the bag feeding platform;

[0071] In this embodiment, if Figure 4 As shown, the bag delivery assembly includes:

[0072] First power unit 151;

[0073] The bag feeding wheel 152 is entirely disposed below the bag feeding platform, with its upper portion passing through the bag feeding platform and exposed into the buffer area, and is driven to rotate by a first power device;

[0074] The bag feeding conveyor belt 153 is installed as a whole below the bag feeding platform. The upper part of the bag feeding conveyor belt passes through the bag feeding platform so that part of the bag feeding conveyor belt is exposed in the buffer area, and part of it is exposed in the bag taking area. The bag feeding conveyor belt is driven to move by the first power device.

[0075] like Figure 1 As shown, the bag loading device further includes a bag pressing unit 300, which is arranged in the buffer area. Figure 5 As shown, the bag pressing unit may include:

[0076] A guide rod 310, wherein the guide rod 310 is vertically arranged on the upper surface of the bag delivery platform;

[0077] The bag pressing part 330 is slidably connected to the guide rod. The bag pressing part is connected to the top of the guide rod through the first spring 320. The bag pressing part is lifted by pulling to compress the first spring.

[0078] In this embodiment, if Figure 6 As shown, the bag pressing part includes:

[0079] A connecting portion 332 , an end of which is penetrated by the guide rod and has a clearance fit with the guide rod;

[0080] Compression rods 331 are mounted on the connecting portion and are arranged in an array, with the arrays of compression rods being equidistantly spaced along the length of the connecting portion;

[0081] The pressing plate 331 is fixed to the side of the pressing rod 331 away from the connecting portion.

[0082] When placing the packaging bag stack in this embodiment, it is only necessary to lift the bag pressing part vertically upwards and place the packaging bag stack between the bag pressing part and the bag feeding platform, and then release the bag pressing part. The bag pressing part is pressed on the upper surface of the packaging bag stack 400 under the action of the first spring. At the same time, the packaging bag at the bottom of the packaging bag stack contacts the bag feeding wheel and the part of the bag feeding conveyor belt exposed from the bag feeding platform. The bag feeding wheel and the bag feeding conveyor belt are driven to move simultaneously by the first power device. Due to the friction between the bag feeding conveyor belt, the bag feeding wheel and the packaging bag, the packaging bag at the bottom of the packaging bag stack is driven to move so that the packaging bag passes through the bag feeding port. In this process, the limit plate will block the adjacent packaging bags that move together due to friction or electrostatic adsorption, thereby avoiding the situation where multiple packaging bags are overlapped and output to the bag taking area. After the packaging bag is conveyed to the bag taking area, the bag taking unit can take out the packaging bag. Moreover, as the number of packaging bags decreases and the quality decreases, the remaining packaging bags will not bend due to uneven force under the pressure of the bag pressing part, affecting the flatness of the packaging bags. At the same time, it avoids the situation where the packaging bags with a certain elasticity pop out of the buffer area after being bent to a certain extent and the elastic force is greater than the friction force and electrostatic force.

[0083] In this embodiment, if Figure 2 As shown, the cache unit may further include side mounting parts, the side mounting parts 130 are fixed on both sides of the bag feeding platform, the limiting plates are fixedly mounted on the side mounting parts, and the bag feeding assembly is mounted on the side mounting parts;

[0084] In this embodiment, the first power device can be a power device such as a servo motor, a stepper motor, a rotary cylinder, a rotary hydraulic cylinder, etc. that can drive the rotation of parts. The power transmission between different parts can be achieved through power transmission structures such as a sprocket transmission mechanism and a pulley transmission mechanism between the bag feeding wheels on different axes and between the bag feeding wheels and the bag feeding conveyor.

[0085] In this embodiment, the above-mentioned bag feeding conveyor belt may include a flexible belt, a driven pulley and a driving pulley. The flexible belt is arranged around the driven pulley and the driving pulley, and the active drive is connected to one group of bag feeding wheels through a power transmission structure.

[0086] It should be noted that the bag delivery platform is provided with a first notch that partially exposes the bag delivery wheel, and a second notch that partially exposes the flexible belt. The first notch is arranged in the buffer area, and the second notch extends from the buffer area to the bag retrieval area.

[0087] The top of the bag feeding wheel passes through the first notch and is partially exposed in the buffer area. The parts of the flexible belt on the master and driven pulleys pass through the second notch and are partially exposed above the bag feeding platform.

[0088] In this embodiment, if Figure 3 As shown, two groups of side limit plates 120 are provided in the buffer area, and the two groups of side limit plates are installed oppositely on the upper surface of the bag delivery platform.

[0089] An adjustment slot 111 is provided on the upper surface of the bag delivery platform at a position corresponding to the side limit plate, and a loosening bolt is passed through the side limit plate and the adjustment slot from top to bottom to achieve a sliding connection between the side limit plate and the bag delivery platform.

[0090] The side limiting plates are used to limit the two sides of the packaging bag. By sliding the side limiting plates, the distance between the two sets of side limiting plates can be adjusted to accommodate packaging bags of different sizes.

[0091] Example 2:

[0092] In order to limit the side of the packaging bag stack away from the limiting plate, this embodiment proposes an improvement based on the embodiment 1, such as Figure 5As shown, the connecting portion 332 includes a slide plate 332A, the end of which is penetrated by the guide rod and is loosely fitted with the guide rod. A handle 332B is provided on the upper surface of the slide plate, and a plurality of downwardly protruding mounting blocks 332C are provided on the lower surface of the slide plate. The mounting block is provided with a socket 332D matching the pressure rod away from the end of the slide plate.

[0093] By holding the handle, it is convenient to pull the entire bag pressing part to move vertically. By setting a mounting block that protrudes vertically downward, the pressure rod is inserted into the socket at the bottom end of the mounting block and fixed with bolts. It is convenient for disassembly and assembly, and can avoid the interference of the side limit plate on the vertical sliding process of the bagging part by setting a mounting block that protrudes downward.

[0094] In order to limit the side of the packaging bag stack away from the limiting plate, Figure 5 As shown, the bag pressing part further includes a tail side limiting part 340, which is arranged on the side of the packaging bag stack away from the limiting plate in the buffer area, and contacts the side of the packaging bag stack away from the limiting plate.

[0095] In this embodiment, the tail side limiting portion includes a baffle rod, which passes through a pressure plate arranged on the side of the pressure rod away from the limiting plate and is gap-matched with the pressure plate. A pad parallel to the upper surface of the bag delivery platform is provided at the bottom of the baffle rod.

[0096] The rear side limiting portion is used to limit the side of the packaging bag stack away from the limiting plate to prevent the packaging bag stack from moving toward the side away from the limiting plate during the bag feeding process, so that the packaging bag stack is kept in the optimal bag feeding position.

[0097] In this embodiment, if Figure 8 、 9 As shown, the pressure rod includes:

[0098] A fixing rod 331A, one end of which is fixed in the socket;

[0099] The movable rod 331B is partially wrapped by the fixed rod and is slidably connected to the fixed rod. A second spring 331C is sleeved on the outside of the movable rod. The movable rod is pulled outward to compress the second spring.

[0100] By pulling the movable rod to pull it out, the movable rod will compress the second spring when pulled, and the compressed second spring will push the movable rod inward, so that the tail limit part is close to the tail side of the packaging bag stack to accommodate packaging bags of different lengths.

[0101] like Figure 10As shown, during the bag feeding process, the pad of the tail side limiting part remains in a hanging state under the action of gravity and contacts the upper surface of the bag feeding platform, while the blocking rod contacts the side of the packaging bag stack away from the limiting plate, and the bag pressing part is pushed downward by the action of the first spring, and the bag pressing part moves relative to the tail side limiting part and the guide rod so that the bag pressing part is always pressed on the upper surface of the packaging bag stack.

[0102] Example 3:

[0103] In order to keep the packaging bag flat, this embodiment proposes improvements based on embodiments 1 and 2, such as Figure 4 As shown, the cache unit may further include:

[0104] A first limiting roller 160, which is arranged above the portion of the bag feeding conveyor belt arranged in the bag taking area;

[0105] A second limiting roller 180, which is arranged on a side of the first guide roller away from the limiting plate;

[0106] A third limiting roller 190, which is arranged between the first limiting roller and the second limiting roller;

[0107] The limiting portion 170 is arc-shaped and extends in an arc shape from a side of the first limiting roller away from the limiting plate to a side of the second limiting roller close to the limiting plate.

[0108] like Figure 4 As shown, in the bag-removing area, the side mounting portion is mounted with a first limiting roller, a limiting portion, a third limiting roller, and a second limiting roller, in order of distance from the bag outlet. The limiting portion is arc-shaped, extending from one side of the first limiting roller, across the top of the first limiting roller, and to the other side below the first limiting roller. A smooth passageway, suitable only for a single packaging bag, is formed between the first limiting roller, the limiting portion, the third limiting roller, and the second limiting roller and the bag-feeding platform.

[0109] When the packaging bag moves from the buffer area to the bag taking area, the packaging bag is restricted by various limiting components, which can effectively ensure the flatness of the packaging bag.

[0110] Example 4:

[0111] Based on Examples 1 to 3, this embodiment provides a structural solution for a bag taking unit, such as Figure 11 As shown, the bag taking unit may include:

[0112] A fixing portion 210, which is fixed to one side of the end of the bag delivery platform in the bag taking area, and a guide groove 211 is provided on the top of the fixing portion;

[0113] A third power device 250, said third power device being movably mounted on the fixed portion;

[0114] A first connecting rod 230, one end of which is rotatably mounted on the fixed portion, and is driven by a third power device to rotate about a rotation axis between the first connecting rod and the fixed portion;

[0115] A second connecting rod 220, one end of which is pivotally connected to the end of the first connecting rod not connected to the fixed portion via a pivot shaft, and the other end of which is mounted with a pulley accommodated in the guide groove, wherein the second connecting rod is fixedly connected to the second connecting rod;

[0116] The clamping mechanism 240 has one end fixedly mounted on the pivot shaft.

[0117] In this embodiment, the fixing portion is provided at one end of the bag taking area of ​​the bag delivery platform.

[0118] like Figure 13 As shown, Figure 13 The state shown is the bag-taking state of the bag-taking unit. After the bag-taking unit clamps and fixes the packaging bag in the bag-taking area, the third power device drives the first connecting rod to rotate around the pivot axis between it and the fixed part, driving the clamping mechanism to swing. In this process, one end of the second connecting rod will move linearly along the guide groove, while the other end will rotate around the pivot connection axis, thereby driving the clamping mechanism to rotate around the pivot connection axis, so that the clamping mechanism moves to the position shown in FIG. Figure 14 The bag feeding status is shown.

[0119] In this embodiment, the third power device drives the first connecting rod to swing, thereby driving the clamping mechanism to reciprocate between the replacement point and the bag delivery point. At the same time, the swinging first connecting rod will drive the end of the second connecting rod provided with a pulley to move linearly along the guide groove. At this time, the second connecting rod rotates around the pivot connection axis with the first connecting rod, thereby driving the clamping mechanism to swing back and forth, thereby realizing the adjustment of the direction of the clamping mechanism.

[0120] In this embodiment, if Figure 12 As shown, the clamping mechanism includes:

[0121] A swing arm 241, one end of which is fixedly connected to the pivot shaft;

[0122] A second power device 240, which is movably mounted on the swing arm;

[0123] A fixed clamping plate 245, which is fixedly mounted on an end of the swing arm away from the pivot connection axis;

[0124] The movable splint 244 is fixedly mounted on the connecting block 243 , wherein the middle portion of the connecting block is pivotally connected to the end of the swing arm away from the pivot axis, and the end of the connecting block away from the movable splint is connected to the second power device.

[0125] The second power device drives the movable clamping plate to rotate so that the movable clamping plate is moved closer to or away from the fixed clamping plate, thereby achieving clamping and loosening of the packaging bag.

[0126] In this embodiment, the first power device and the second power device include but are not limited to power devices such as a cylinder, an electric cylinder, a hydraulic cylinder, and a motor.

[0127] In addition, a limiter may be provided on the motion track of the first connecting rod, and the first connecting rod is arranged between two sets of limiters, so that the swing angle of the first connecting rod is limited by the limiter.

[0128] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bagging device for product packaging, characterized in that: It includes a buffer unit and a bag taking unit, wherein the bag taking unit is arranged on one side of the buffer unit; The cache unit includes: Bag delivery platform; A limiting plate is integrally arranged obliquely above the bag delivery platform, wherein the bottom of the limiting plate and the upper surface of the bag delivery platform form a bag outlet for only a single packaging bag to pass through, a first side portion of the limiting plate and the upper surface of the bag delivery platform form a buffer area for accommodating a plurality of packaging bags in a limited quantity, and a second side portion of the limiting plate and the upper surface of the bag delivery platform form a bag taking area for a bag taking unit to take away the packaging bags; A bag feeding assembly, through which the packaging bag located at the bag outlet is driven to move from the buffer area to the replacement area; The first side portion is a side where the limiting plate forms an acute angle with the upper surface of the bag feeding platform, and the second side portion is a side where the limiting plate forms an obtuse angle with the upper surface of the bag feeding platform; The bag loading device further includes a bag pressing unit, which is arranged in the buffer area and includes: A guide rod, the guide rod being vertically arranged on the upper surface of the bag delivery platform; The bag pressing part is slidably connected to the guide rod and is connected to the top of the guide rod through a first spring. The bag pressing part is lifted by pulling the bag pressing part to compress the first spring.

2. A bagging device for product packaging according to claim 1, characterized in that: The bag pressing part comprises: A connecting portion, an end of which is penetrated by the guide rod and has a clearance fit with the guide rod; A pressure rod is mounted on the connecting portion, wherein the pressure rods are arranged in an array, and the pressure rods in the array are equidistantly arranged along the length direction of the connecting portion; A pressing plate is fixed to the side of the pressing rod away from the connecting portion.

3. A bagging device for product packaging according to claim 2, characterized in that: The connecting part includes a slide plate, the end of which is penetrated by the guide rod and is loosely fitted with the guide rod. A handle is provided on the upper surface of the slide plate, and a plurality of downwardly protruding mounting blocks are provided on the lower surface of the slide plate. The mounting blocks are provided with a socket matching the pressure rod away from the end of the slide plate.

4. A bagging device for product packaging according to claim 3, characterized in that: The bag pressing part also includes a tail side limiting part, which is arranged on the side of the packaging bag stack away from the limiting plate in the buffer area, and the tail side limiting part is in contact with the side of the packaging bag stack away from the limiting plate.

5. A bagging device for product packaging according to claim 4, characterized in that: The tail side limiting part includes a blocking rod, which passes through a pressure plate arranged on the side of the pressure rod away from the limiting plate and is gap-matched with the pressure plate. A pad parallel to the upper surface of the bag delivery platform is provided at the bottom of the blocking rod.

6. A bagging device for product packaging according to claim 5, characterized in that: The pressure rod comprises: a fixing rod, one end of which is fixed in the socket; The movable rod is partially wrapped by the fixed rod, the movable rod is slidably connected to the fixed rod, a second spring is sleeved on the outer side of the movable rod, and the movable rod is pulled outward to compress the second spring.

7. The product packaging bagging device according to claim 1, characterized in that: The bag delivery assembly comprises: first power unit; A bag feeding wheel, the bag feeding wheel being entirely arranged below the bag feeding platform, the upper portion of the bag feeding wheel passing through the bag feeding platform and exposed into the buffer area, and the bag feeding wheel being driven to rotate by a first power device; The bag feeding conveyor belt is installed as a whole under the bag feeding platform. The upper part of the bag feeding conveyor belt passes through the bag feeding platform so that part of the bag feeding conveyor belt is exposed in the buffer area, and part of it is exposed in the bag taking area. The bag feeding conveyor belt is driven to move by the first power device.

8. The product packaging bagging device according to claim 1, characterized in that: The cache unit further includes: a first limiting roller, which is arranged above a portion of the bag feeding conveyor belt arranged in the bag taking area; a second limiting roller, the second limiting roller being arranged on a side of the first guide roller away from the limiting plate; a third limiting roller, the third limiting roller being arranged between the first limiting roller and the second limiting roller; The limiting portion is arc-shaped and extends in an arc shape from a side of the first limiting roller away from the limiting plate to a side of the second limiting roller close to the limiting plate.

9. The product packaging bagging device according to claim 1, characterized in that: Two groups of side limit plates are provided in the buffer area, and the two groups of side limit plates are installed oppositely on the upper surface of the bag delivery platform.

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