Bag clamping device and packaging machine

Abstract

The utility model belongs to the technical field of packaging machines. The bag clamping device comprises a hopper; the clamping arm bag clamping mechanisms are symmetrically arranged at the two ends of the hopper; the opening width between the clamping arm bag clamping mechanisms can be adjusted according to the bag width of a packaging bag, and the two ends of the packaging bags with different bag widths are clamped; the material door bag clamping mechanisms are symmetrically arranged on the two sides of the hopper; the material door bag clamping mechanisms can adjust the size of an opening between the material door bag clamping mechanisms according to the bag width of a packaging bag, so that the size of the opening of the hopper is adjusted, and the two sides of the packaging bags with different bag widths are clamped. The bag clamping device is used for solving the technical problem that a conventional bag clamping device cannot be suitable for material bags with large bag width spans. The packaging machine comprises the bag clamping device.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machinery technology, specifically relating to a bag clamping device and a packaging machine including the above-mentioned bag clamping device. Background Technology

[0002] Finished materials produced in industries such as pet food, premixed feed, and additives are characterized by multiple specifications (5kg, 10kg, 25kg, etc.), resulting in a large range in the width of packaging bags, often reaching 200mm (e.g., 5kg bags are 300mm wide, and 25kg bags are 500mm wide).

[0003] In industries such as pet food, premixed feed, and additives, packaging machinery often struggles to simultaneously handle packaging bags with wide spans. A common approach is to use a clamping device for both small and large bags. However, this method leads to reduced packaging efficiency, low production productivity, and poor bag opening uniformity when using the clamping device on larger bags. Previous solutions involved manually adjusting the clamping device's position to accommodate the switching between large and small bags. However, this method is slow, labor-intensive, and unsuitable for frequent, rapid switching, and is rarely adopted by the industry.

[0004] Therefore, it is urgent to develop a bag clamping device suitable for wide bags in industries such as pet food, premixed feed, and additives. Utility Model Content

[0005] The first objective of this invention is to provide a bag clamping device to solve the technical problem that conventional bag clamping devices cannot be applied to material bags with a large width range.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a bag clamping device, comprising:

[0007] hopper;

[0008] The clamping arm bag clamping mechanism is symmetrically arranged at both ends of the hopper; the clamping arm bag clamping mechanism can adjust the opening width between the clamping arms according to the width of the packaging bag, and clamp the two ends of packaging bags of different widths;

[0009] The material gate bag clamping mechanism is symmetrically arranged on both sides of the hopper; the material gate bag clamping structure can adjust the opening size between the material gate bag clamping mechanisms according to the width of the packaging bag, thereby adjusting the opening size of the hopper and clamping the two sides of packaging bags of different widths.

[0010] This utility model utilizes a clamping arm bag clamping mechanism, which can adjust the opening width between the clamping arms according to the width of the packaging bag, and clamp both ends of packaging bags of different widths. It breaks through the bottleneck that conventional bag clamping devices cannot be used for material bags with a large range of bag widths, realizes automatic switching of the applicability of material bags of different sizes, and the switching process is convenient, quick and easy with one-button operation, which greatly improves customer satisfaction and improves the production efficiency of packaging in multi-formula industries.

[0011] This invention employs a symmetrical design to ensure stability during the bag clamping process. It also features a fully automatic, one-button switching device suitable for different bag widths.

[0012] To solve the technical problem of how to implement the clamping arm bag-gripping mechanism, this utility model adopts the following technical solution, wherein the clamping arm bag-gripping mechanism includes:

[0013] Telescopic clamp arm bracket;

[0014] A gripper-driven cylinder is located at the end of the telescopic clamping arm bracket, and a gripper for clamping bags is provided at the telescopic end of the gripper-driven cylinder.

[0015] Telescopic clamp arm support adjustment assembly, including:

[0016] The first clamping arm drive cylinder is hinged to the hopper; the telescopic end of the first clamping arm drive cylinder is hinged to the first clamping arm assembly.

[0017] The second clamping arm drive cylinder has its extension and retraction end hinged to the telescopic clamping arm bracket; the second clamping arm drive cylinder is hinged to the telescopic clamping arm bracket via the clamping arm adjustment cylinder.

[0018] When the gripper drive cylinder is extended, the bag gripper opens. When the bag is in position, the gripper drive cylinder retracts, causing the bag gripper to close and clamp the bag. The first and second clamping arm drive cylinders extend, making the bag gripper fit tightly against both sides of the hopper.

[0019] To solve the technical problem of how to implement a telescopic clamping arm bracket, the present invention adopts the following technical solution: the telescopic clamping arm bracket includes a first clamping arm assembly, a connecting rod assembly, and a second clamping arm assembly that are sequentially hinged together.

[0020] One end of the first clamping arm assembly is hinged to the hopper; the other end of the first clamping arm assembly is provided with a hinge seat, which is hinged to the extension end of the clamping arm adjusting cylinder.

[0021] The second gripper assembly is provided with a mounting base; the gripper drive cylinder is provided on the mounting base, and the operation is reliable.

[0022] To solve the technical problem of how to implement the material gate bag clamping mechanism, this utility model adopts the following technical solution, wherein the material gate bag clamping mechanism includes:

[0023] The feed gate adjustment assembly includes:

[0024] A material gate, hinged to the hopper, is used to control the opening and closing of the hopper, as well as the size of the hopper opening;

[0025] A material gate control cylinder, the extension and retraction end of which is hinged to the material gate; the material gate control cylinder is hinged to the hopper via a material gate adjustment cylinder;

[0026] The bag clamping assembly includes a clamping plate and a clamping plate control cylinder, wherein the clamping plate and the clamping plate control cylinder are respectively hinged to the material gate; the extension and retraction end of the clamping plate control cylinder is hinged to the clamping plate.

[0027] When the clamping plate control cylinder is in the retracted state, the clamping plate is separated from the material gate; when the material gate control cylinder extends, the material gate closes. When the bag is in place, the clamping plate control cylinder extends and clamps the bag tightly against the material gate. At the same time, the sensor detects whether the bag is clamped securely. Once the bag is detected to be securely clamped, the material gate cylinder retracts and the material gate opens.

[0028] To address the technical problem of not being able to detect whether the bag clamping mechanism at the material gate is securely holding the packaging bag, this utility model adopts the following technical solution: a sensor assembly is installed on the bag clamping mechanism at the material gate to detect whether the packaging bag is securely held. When the bag is in position, the clamping plate control cylinder extends, and the clamping plate is pressed tightly against the material gate, clamping the bag. At the same time, the sensor detects whether the bag is securely held. Once the bag is detected to be securely held, the material gate cylinder retracts, and the material gate opens.

[0029] To address the technical challenge of installing the sensor assembly, this invention employs the following solution: the sensor assembly is mounted on the clamping plate. The sensor is bolted to the clamping plate, making installation convenient and quick.

[0030] To address the technical problem of how to implement the first clamping arm assembly, the second clamping arm assembly, and the connecting rod assembly, this utility model adopts the following technical solution: the first clamping arm assembly includes two parallelogram mechanisms.

[0031] A first connecting rod is provided in the middle of the first clamping arm assembly, and the first connecting rod is rotatably connected to the telescopic end of the first clamping arm drive cylinder;

[0032] The second clamping arm assembly includes two parallelogram mechanisms; a second connecting rod is provided in the middle of the second clamping arm assembly, and the second connecting rod is rotatably connected to the extension end of the second clamping arm drive cylinder;

[0033] The linkage assembly includes two linkages, one end of which is rotatably connected to a corresponding first clamping arm assembly, and the other end of which is rotatably connected to a corresponding second clamping arm assembly.

[0034] To address the technical problem of maintaining consistent movement of the clamping arm adjusting cylinder, this invention adopts the following technical solution: a first guide protection frame is provided on the connecting rod assembly to guide the clamping arm adjusting cylinder, effectively ensuring the consistency of the clamping arm adjusting cylinder's movement.

[0035] To address the technical problem of maintaining consistent movement of the material gate adjusting cylinder, this invention employs the following technical solution: a second guide protection frame is installed on the hopper to guide the material gate adjusting cylinder, effectively ensuring the consistency of its movement.

[0036] The second objective of this invention is to provide a packaging machine that includes the bag clamping device described in any of the above-mentioned claims. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the bag clamping device of this utility model. Figure 1 ;

[0038] Figure 2 This is a schematic diagram of the bag clamping device of this utility model. Figure 2 ;

[0039] Figure 3 This is a schematic diagram of the structure of the clamping arm and bag clamping mechanism of this utility model;

[0040] Figure 4 This is a schematic diagram of the material gate bag clamping mechanism of this utility model;

[0041] Figure 5 Schematic diagram of the minimum bag width adapted to the bag clamping device of this utility model Figure 1 ;

[0042] Figure 6 Schematic diagram of the minimum bag width adapted to the bag clamping device of this utility model Figure 2 ;

[0043] Figure 7 Schematic diagram of the maximum bag width adapted to the bag clamping device of this utility model Figure 1 ;

[0044] Figure 8 Schematic diagram of the maximum bag width adapted to the bag clamping device of this utility model Figure 2 .

[0045] In the picture:

[0046] 10. Bag clamping device;

[0047] 100 Hopper; 101 Mounting plate; 102 First hinge seat; 103 Second hinge seat; 104 Third hinge seat; 105 Fourth hinge seat; 106 Fifth hinge seat;

[0048] 200 clamping arm bag clamping mechanism;

[0049] 210 Telescopic clamping arm bracket; 211 First clamping arm assembly; 212 Linkage assembly; 213 Second clamping arm assembly; 214 First connecting rod; 215 Second connecting rod; 216 Hinge seat; 217 Mounting seat;

[0050] 220 Gripper assembly; 221 Gripper drive cylinder; 222 Bag gripper;

[0051] 230 Telescopic clamping arm bracket adjustment assembly; 231 First clamping arm drive cylinder; 232 Second clamping arm drive cylinder; 233 Clamping arm adjustment cylinder;

[0052] 300 Material gate bag clamping mechanism; 310 Material gate adjusting assembly; 311 Material gate; 312 Material gate control cylinder; 313 Material gate control cylinder; 320 Bag clamping assembly; 321 Clamping plate control cylinder; 322 Clamping plate;

[0053] 330 sensor assembly;

[0054] 401 First guide frame; 402 Second guide frame;

[0055] 501 Minimum bag width material bag; 502 Maximum bag width material bag. Detailed Implementation

[0056] The present invention will be further described below with reference to the accompanying drawings.

[0057] To address the inconvenience of manual adjustment and poor bag opening uniformity caused by the need for various packaging specifications of materials, this utility model provides a bag clamping device suitable for multiple bag widths. The device structure is adjustable with one button to adapt to the clamping needs of packaging bags of different widths, thereby meeting the bag width requirements of different material specifications during bagging.

[0058] like Figure 1-2As shown, the bag clamping device 10 includes a hopper 100, a clamping arm bag clamping mechanism 200, and a material gate bag clamping mechanism 300. The clamping arm bag clamping mechanism 200 includes a left clamping arm bag clamping mechanism and a right clamping arm bag clamping mechanism. The material gate bag clamping mechanism 300 includes a front material gate bag clamping mechanism and a rear material gate bag clamping mechanism. This structure adopts a symmetrical design to ensure stability during the bag clamping process. The left and right clamping arm bag clamping mechanisms have the same structure, and the front and rear material gate bag clamping mechanisms have the same structure. The hopper is connected to the packaging mechanism by bolts, thereby fixing the entire bag clamping device 10. The left and right clamping arm bag clamping mechanisms are located on the left and right sides of the hopper, respectively, and are connected to the hopper by hinges. The front and rear material gate bag clamping mechanisms are located at the front and rear ends of the hopper, respectively, and are connected to the hopper by hinges.

[0059] An mounting plate 101 is provided on the feed inlet of the hopper 100. A first hinge seat 102 is installed on the mounting plate 101. A second hinge seat 103 and a third hinge seat 104 are respectively installed on the side wall of the hopper 100.

[0060] The clamping arm bag clamping mechanism 200 is symmetrically arranged at both ends of the hopper 100. The clamping arm bag clamping mechanism 200 adjusts the opening width between the clamping arms 200 according to the width of the packaging bag, and clamps the two ends of packaging bags of different widths.

[0061] Specifically, such as Figure 3 As shown, the clamping arm bag clamping mechanism 200 includes a telescopic clamping arm bracket 210, a gripper assembly 220, and a telescopic clamping arm bracket adjustment assembly 230.

[0062] In one embodiment, the telescopic clamping arm bracket 210 includes a first clamping arm assembly 211, a connecting rod assembly 212, and a second clamping arm assembly 213 that are sequentially hinged together.

[0063] In one embodiment, one end of the first clamping arm assembly 211 is hinged to the hopper 100. Specifically, one end of the first clamping arm assembly 211 is hinged to the second hinge seat 103.

[0064] The other end of the first clamping arm assembly 211 is provided with a hinge seat 216. The first clamping arm assembly 211 includes two parallelogram mechanisms, and a first connecting rod 214 is provided in the middle of the first clamping arm assembly 211.

[0065] In one embodiment, the second clamping arm assembly 213 includes two parallelogram mechanisms. One end of the second clamping arm 213 is hinged to the corresponding end of the connecting rod assembly 212, the other end of the second clamping arm assembly 213 is hinged to the mounting base 217, and a second connecting rod 215 is mounted in the middle of the second clamping arm assembly 213.

[0066] In one embodiment, the linkage assembly 212 includes two links, one end of which is rotatably connected to the corresponding first clamping arm assembly 211, and the other end of which is rotatably connected to the corresponding second clamping arm assembly 213.

[0067] The gripper assembly 220 includes a gripper drive cylinder 221 and a bag gripper 222. The gripper drive cylinder 221 is located at the end of the telescopic gripper arm bracket 210. Specifically, the gripper drive cylinder 221 is mounted on the mounting base 217, and the bag gripper 222 is located at the telescopic end of the gripper drive cylinder 221.

[0068] In one embodiment, the telescopic clamping arm support adjustment assembly 230 includes a first clamping arm drive cylinder 231 and a second clamping arm drive cylinder 232.

[0069] The first clamping arm drive cylinder 231 is hinged to the hopper 100. Specifically, the first clamping arm drive cylinder 231 is hinged to the first hinge seat 102.

[0070] The telescopic end of the first clamping arm drive cylinder 231 is hinged to the first clamping arm assembly 211. Specifically, the telescopic end of the first clamping arm drive cylinder 231 is rotatably connected to the first connecting rod 214.

[0071] The telescopic end of the second clamping arm drive cylinder 232 is hinged to the telescopic clamping arm bracket 210. Specifically, the telescopic end of the second clamping arm drive cylinder 232 is rotatably connected to the second connecting rod 2131. The second clamping arm drive cylinder 232 is hinged to the telescopic clamping arm bracket 210 via the clamping arm adjusting cylinder 233. Specifically, the second clamping arm drive cylinder 232 is connected to the clamping arm adjusting cylinder 233, and the telescopic end of the clamping arm adjusting cylinder 233 is hinged to the hinge seat 216.

[0072] In one embodiment, a first guide frame 401 is provided on the connecting rod assembly 212 for guiding the clamping arm adjusting cylinder.

[0073] In one embodiment, the material gate bag clamping mechanism 300 is symmetrically arranged on both sides of the hopper 100; the material gate bag clamping mechanism 300 can adjust the opening size between the material gate bag clamping mechanisms according to the bag width of the packaging bag, thereby adjusting the opening size of the hopper and clamping the two sides of packaging bags of different widths.

[0074] The left (right) clamping arm bag clamping structure includes a first clamping arm drive cylinder, a clamping arm adjustment cylinder, a second clamping arm drive cylinder, a gripper drive cylinder, and a bag clamping gripper. The first clamping arm drive cylinder is connected to the hopper at one end via a hinge, and to the clamping arm bracket at the other end via a hinge. The clamping arm adjustment cylinder and the second clamping arm drive cylinder are fixedly connected at one end to each other, and their other ends are respectively hinged to the clamping arm bracket. The gripper drive cylinder is fixed at one end to the clamping arm bracket, and connected to the bag clamping gripper at the other end via a pin.

[0075] To accommodate different bag widths, the extension length of the clamping arm adjusting cylinder can be freely adjusted with a single button. During actual operation, the gripper drive cylinder is in the extended state, and the bag-clamping grippers are open. When the bag is in position, the gripper drive cylinder retracts, causing the bag-clamping grippers to close and clamp the bag. The first and second clamping arm drive cylinders then extend, ensuring the bag-clamping grippers are firmly against both sides of the hopper.

[0076] In one embodiment, such as Figure 4 As shown, the material gate bag clamping mechanism 300 includes a material gate adjustment assembly 310 and a bag clamping assembly 320.

[0077] The material gate adjustment assembly 310 includes a material gate 311, a material gate control cylinder 312, and a material gate control cylinder 313. The material gate 311 is hinged to the hopper 100 and is used to control the opening and closing of the hopper and the size of the hopper opening. A fourth connecting seat 105 and a fifth hinge seat 106 are installed on the material gate 311.

[0078] The gate control cylinder 312 is hinged to the hopper 100 via the gate adjustment cylinder 313; the extension end of the gate control cylinder 312 is hinged to the gate 311. Specifically, the gate adjustment cylinder 313 is hinged to the third hinge seat 104. The gate control cylinder 312 is mounted on the gate adjustment cylinder 313.

[0079] The bag clamping assembly 320 includes a clamping plate 322 and a clamping plate control cylinder 321. The clamping plate 322 is hinged to the material gate 311, specifically, the clamping plate 322 is hinged to the fourth hinge seat 105. The clamping plate control cylinder 321 is hinged to the material gate 311, specifically, the clamping plate control cylinder 321 is connected to the fifth hinge seat 106. The telescopic end of the clamping plate control cylinder 321 is hinged to the clamping plate 322.

[0080] In one embodiment, a sensor assembly 330 is provided on the material gate bag clamping mechanism 300 to detect whether the material gate bag clamping mechanism is clamping the packaging bag securely. Preferably, the sensor assembly 330 is mounted on the clamping plate 322.

[0081] In one embodiment, a second guide frame 402 is provided on the hopper 100 for guiding the material gate adjusting cylinder.

[0082] The front (rear) material gate bag clamping mechanism includes a material gate adjusting cylinder, a material gate controlling cylinder, a clamping plate controlling cylinder, a sensor assembly, a clamping plate, and a material gate. The material gate adjusting cylinder and the material gate controlling cylinder are fixedly connected at one end, and their other ends are connected to the hopper via a hinge. The other end of the material gate controlling cylinder is hinged to the material gate. The clamping plate controlling cylinder is connected to both the material gate and the clamping plate via hinges. The sensor is bolted to the clamping plate.

[0083] To accommodate different bag widths, the extension length of the material gate adjusting cylinder can be freely adjusted with a single button. During actual operation, the clamping plate control cylinder is in the retracted state, separating the clamp from the material gate; the material gate control cylinder extends, closing the material gate. When the bag is in position, the clamping plate control cylinder extends, clamping the bag tightly against the material gate. Simultaneously, a sensor detects whether the bag is securely clamped. Once secure clamping is detected, the material gate cylinder retracts, opening the material gate.

[0084] The electrical components of the bag clamping device can be made explosion-proof as required.

[0085] The working process of the bag clamping device:

[0086] For materials of different specifications, the width of the material bags varies. When switching bags, the adjusting cylinders on the left and right clamping arm bag clamping mechanisms and the front and rear material gate bag clamping mechanisms can be adjusted to adapt to different bag widths. The extension length of the left and right clamping arm adjusting cylinders changes the opening distance of the left and right clamping arms; the extension length of the front and rear material gate adjusting cylinders changes the opening size of the material gate. Therefore, there are two extreme positions:

[0087] ① Figure 5 , Figure 6 The diagram shows a bag clamping device adapted to a minimum bag width, including a bag clamping device 10 and a minimum bag width material bag 501. When the minimum bag width is W1, the left and right clamping arm adjusting cylinders and the front and rear material gate adjusting cylinders can be fully extended, with extension distances of L1 and L2 respectively; when the material bag is clamped, the material gate control cylinders on the front and rear material gates are fully retracted, and the material gates are opened, at which time the opening width of the material gates is W2.

[0088] ② Figure 7 , Figure 8 The diagram shows the bag clamping device adapted to the maximum bag width, including the bag clamping device 10 and the maximum bag width material bag 502. When the maximum bag width is W3, the left and right clamping arm adjusting cylinders and the front and rear material gate adjusting cylinders can be fully retracted, with distances of L3 and L4 respectively. After the material bag is clamped, the material gate control cylinders on the front and rear material gates are fully retracted, and the material gates are opened, with an opening width of W4.

[0089] In actual operation, the initial state of the device is as follows: the gripper drive cylinders of the left and right clamping arms extend, the grippers open, and the gripper drive cylinders retract; the material gate control cylinder extends, and the material gate closes; the clamping plate control cylinder retracts, waiting to clamp the bag. After the bag is in place, the gripper drive cylinder retracts, the grippers close, and simultaneously the clamping plate drive cylinder extends to clamp the bag. After clamping is completed, the sensor assembly detects whether the bag is firmly clamped. After detection, the left and right clamping arm drive cylinders extend, pushing the clamping arms to make the grippers press firmly against the hopper, while the material gate control cylinder retracts, the material gate opens, and material is loaded.

[0090] This utility model is developed specifically for industries with multiple specifications and varieties of materials such as pet food, premixed feed, and additives, based on demand. It is suitable for bag clamping devices with multiple bag widths and can automatically switch between applicable bag widths with one click, improving the adaptability of the equipment and enhancing the competitiveness of packaging products.

[0091] This utility model has the following beneficial effects:

[0092] 1. Wide adaptability, meeting the clamping requirements of packaging bags of different widths and sizes;

[0093] 2. Meets the bagging requirements of materials of various specifications;

[0094] 3. The device can be quickly adjusted without tools to accommodate different bag widths;

[0095] 4. The bag clamping detection is accurate and the device has high reliability;

[0096] 5. The electrical integration design provides a high level of protection, a long service life, and facilitates explosion-proof treatment.

[0097] 6. Low manufacturing cost, compact structure, easy installation, and easy to promote.

[0098] Example 2

[0099] A packaging machine, including the bag clamping device described in any one of Embodiment 1.

[0100] The above embodiments are only for illustrating the technical features and concept of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made according to the spirit and implementation of this utility model should be covered within the protection scope of this utility model.

Claims

1. A bag clamping device, characterized in that, include: hopper; The clamping arm bag clamping mechanism is symmetrically arranged at both ends of the hopper; The clamping arm bag clamping mechanism can adjust the opening width between the clamping arms according to the width of the packaging bag, and clamp the two ends of packaging bags of different widths; The material gate bag clamping mechanism is symmetrically arranged on both sides of the hopper; the material gate bag clamping structure can adjust the opening size between the material gate bag clamping mechanisms according to the width of the packaging bag, thereby adjusting the opening size of the hopper and clamping the two sides of packaging bags of different widths.

2. The bag clamping device according to claim 1, characterized in that, The clamping arm bag clamping mechanism includes: Telescopic clamp arm bracket; A gripper-driven cylinder is located at the end of the telescopic clamping arm bracket, and a gripper for clamping bags is provided at the telescopic end of the gripper-driven cylinder. Telescopic clamp arm support adjustment assembly, including: The first clamping arm drive cylinder is hinged to the hopper; the telescopic end of the first clamping arm drive cylinder is hinged to the first clamping arm assembly. The second clamping arm drive cylinder has its extension and retraction end hinged to the telescopic clamping arm bracket; the second clamping arm drive cylinder is hinged to the telescopic clamping arm bracket via the clamping arm adjustment cylinder.

3. The bag clamping device according to claim 2, characterized in that, The telescopic clamping arm bracket includes a first clamping arm assembly, a connecting rod assembly, and a second clamping arm assembly that are sequentially hinged together. One end of the first clamping arm assembly is hinged to the hopper; the other end of the first clamping arm assembly is provided with a hinge seat, which is hinged to the extension end of the clamping arm adjusting cylinder. The second gripper assembly is provided with a mounting base; the gripper drive cylinder is provided on the mounting base.

4. The bag clamping device according to claim 1, characterized in that, The material gate bag clamping mechanism includes: The feed gate adjustment assembly includes: A material gate, hinged to the hopper, is used to control the opening and closing of the hopper, as well as the size of the hopper opening; A material gate control cylinder, the extension and retraction end of which is hinged to the material gate; the material gate control cylinder is hinged to the hopper via a material gate adjustment cylinder; The bag clamping assembly includes a clamping plate and a clamping plate control cylinder, wherein the clamping plate and the clamping plate control cylinder are respectively hinged to the material gate; the extension and retraction end of the clamping plate control cylinder is hinged to the clamping plate.

5. The bag clamping device according to claim 3, characterized in that, The material gate bag clamping mechanism is equipped with a sensor assembly to detect whether the material gate bag clamping mechanism is clamping the packaging bag securely.

6. The bag clamping device according to claim 5, characterized in that, The sensor assembly is mounted on the clamp.

7. The bag clamping device according to claim 3, characterized in that, The first clamping arm assembly includes two parallelogram mechanisms. A first connecting rod is provided in the middle of the first clamping arm assembly, and the first connecting rod is rotatably connected to the telescopic end of the first clamping arm drive cylinder; The second clamping arm assembly includes two parallelogram mechanisms; a second connecting rod is provided in the middle of the second clamping arm assembly, and the second connecting rod is rotatably connected to the extension end of the second clamping arm drive cylinder; The linkage assembly includes two linkages, one end of which is rotatably connected to a corresponding first clamping arm assembly, and the other end of which is rotatably connected to a corresponding second clamping arm assembly.

8. The bag clamping device according to claim 7, characterized in that, The connecting rod assembly is provided with a first guide frame for guiding the clamping arm adjusting cylinder.

9. The bag clamping device according to claim 4, characterized in that, A second guide frame is provided on the hopper to guide the material gate adjusting cylinder.

10. A packaging machine, characterized by: Includes the bag clamping device according to any one of claims 1-9.

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