Packaging bag zipper opening device

Abstract

The utility model discloses a packaging bag zipper opening device, which relates to the technical field of zipper opening and comprises a power transmission module, a zipper opening module, a zipper opening module and a zipper opening module, the guide module comprises supports fixed to the front bag opening shaft and the rear bag opening shaft respectively, and a front bag opening guide shaft and a rear bag opening guide shaft are fixed to the supports and used for restraining the motion trail of the bag opening shafts; the adsorption positioning module comprises a bag opening suction cup installed on the support, and the bag opening suction cup fixes a packaging bag opening through vacuum adsorption; the clamping jaw execution module comprises a pull rod hinged to the support, a clamping jaw connected with the pull rod and a guide block rotationally connected with the clamping jaw through a shaft. According to the utility model, the installation space of the zipper opening mechanism is greatly reduced, and the running speed of zipper opening can be improved due to the reduction of driving sources. And no large-range sliding friction exists, so that the risk of foreign matters is reduced.

Description

Technical Field

[0001] This utility model relates to the field of zipper opening technology, and in particular to a zipper opening device for packaging bags. Background Technology

[0002] Currently, the zipper opening mechanism on packaging machines is achieved by the coordinated movement of multiple cylinders and is independent of the bag opening mechanism. Therefore, its actions have a relatively strong logical relationship, resulting in limited bag opening speed and a large space occupation. Alternatively, although it is integrated with the bag opening mechanism, it is a guide channel mechanism, which has a large area of ​​sliding friction and poses a risk of foreign objects.

[0003] Therefore, this utility model provides a zipper opening device for packaging bags to solve the problems existing in the prior art. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a zipper-opening device for packaging bags, comprising:

[0005] The power transmission module includes a front bag opening shaft and a rear bag opening shaft driven by a power source, wherein the front bag opening shaft and the rear bag opening shaft achieve synchronous movement through gear meshing;

[0006] The guiding module includes brackets fixed to the front opening bag shaft and the rear opening bag shaft respectively. The front opening bag guide shaft and the rear opening bag guide shaft are fixed on the brackets to constrain the movement trajectory of the opening bag shaft.

[0007] The adsorption positioning module includes a bag-opening suction cup mounted on the bracket, wherein the bag-opening suction cup fixes the opening of the packaging bag by vacuum adsorption;

[0008] The execution module includes a pull rod hinged to the bracket, a gripper connected to the pull rod, and a guide block rotatably connected to the gripper via a shaft;

[0009] The pneumatic control module includes a cylinder that drives the guide block to move. The cylinder pushes the guide block to drive the gripper to rotate around an axis, thereby realizing the clamping or releasing action of the gripper.

[0010] Preferably, the gear is a spur gear with equal module, and the front opening shaft and the rear opening shaft are respectively provided with tooth grooves that mesh with the gear to ensure that the movement speed of the two shafts is consistent.

[0011] Preferably, the front opening guide shaft and the rear opening guide shaft are arranged in parallel and are perpendicular to the axial direction of the front opening shaft and the rear opening shaft, respectively, to form a linear motion guide for the bracket.

[0012] Preferably, the claws have an arc-shaped end to prevent puncturing the packaging bag.

[0013] Preferably, the cylinder is a double-acting cylinder, and the piston rod stroke and the opening and closing angle of the gripper are controlled by the lever ratio relationship of the guide block.

[0014] Preferably, the bag-opening suction cup is connected to the vacuum device via a solenoid valve, and the triggering timing of the vacuum suction action is synchronized with the closing motion signals of the front bag-opening shaft and the rear bag-opening shaft.

[0015] Preferably, the bracket is provided with a lower leather plug, and the gripper, in the clamping state, forms a cooperative clamping of the packaging bag with the lower leather plug, and the synchronous reverse movement of the front opening shaft and the rear opening shaft achieves zipper separation through the clamping force of the gripper and the lower leather plug.

[0016] Preferably, the lower stopper is made of elastic silicone material, and its surface contacts the end of the gripper to enhance clamping stability.

[0017] This utility model discloses the following technical effects: It includes a power transmission module, a guiding module, an adsorption and positioning module, a gripper execution module, and a pneumatic control module. These modules work together to achieve the automatic zipper opening function of the packaging bag. The synchronous movement of the front and rear opening shafts driven by the power source ensures the stability and accuracy of the bag opening process. This utility model greatly reduces the installation space of the zipper opening mechanism, and the reduced drive source increases the zipper opening speed. The absence of significant sliding friction reduces the risk of foreign objects entering the bag. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the bracket of this utility model;

[0021] In the diagram: 1. Front opening shaft; 2. Rear opening shaft; 3. Gear; 4. Bracket; 5. Opening suction cup; 6. Pull rod; 7. Gripper; 8. Guide block; 9. Cylinder; 10. Front opening guide shaft; 11. Rear opening guide shaft; 12. Shaft; 13. Lower stopper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-2 As shown, this embodiment provides a zipper-opening device for packaging bags, including:

[0025] The power transmission module includes a front opening bag shaft 1 and a rear opening bag shaft 2 driven by a power source. The front opening bag shaft 1 and the rear opening bag shaft 2 achieve synchronous movement through gear 3 meshing.

[0026] The guide module includes a bracket 4 fixed to the front opening bag shaft 1 and the rear opening bag shaft 2 respectively. The bracket 4 has a front opening bag guide shaft 10 and a rear opening bag guide shaft 11 fixed on it to constrain the movement trajectory of the opening bag shaft.

[0027] The adsorption positioning module includes a bag-opening suction cup 5 mounted on a bracket 4, which fixes the opening of the packaging bag by vacuum adsorption.

[0028] The execution module includes a pull rod 6 hinged to the bracket 4, a gripper 7 connected to the pull rod 6, and a guide block 8 rotatably connected to the gripper 7 via a shaft 12;

[0029] The pneumatic control module includes a cylinder 9 that drives the guide block 8 to move. The cylinder 9 drives the guide block 8 to rotate the gripper 7 around the shaft 12, thereby realizing the clamping or releasing action of the gripper 7.

[0030] This invention includes a power transmission module, a guiding module, an adsorption and positioning module, a gripper 7 execution module, and a pneumatic control module. These modules work together to achieve the automatic zipper opening function of the packaging bag. The synchronous movement of the front opening shaft 1 and the rear opening shaft 2, driven by the power source, ensures the stability and accuracy of the bag opening process. This invention significantly reduces the installation space of the zipper opening mechanism, and the reduced drive source allows for increased zipper opening speed. The absence of significant sliding friction reduces the risk of foreign objects entering the bag.

[0031] The design was further optimized by using a spur gear of equal module 3. Gear slots that mesh with gear 3 are respectively provided on the front opening shaft 1 and the rear opening shaft 2, ensuring consistent movement speeds of the two shafts. This helps maintain synchronization and stability during the bag opening process, preventing opening failures or damage to the packaging bag due to inconsistent speeds.

[0032] The design is further optimized by arranging the front opening guide shaft 10 and the rear opening guide shaft 11 in parallel, and perpendicular to the axial directions of the front opening shaft 1 and the rear opening shaft 2, respectively, thus providing linear motion guidance for the support 4. This helps ensure the stable movement of the support 4 during the bag opening process, improving the accuracy and reliability of the bag opening.

[0033] The design has been further optimized, with the curved surface at the end of the gripper 7 preventing punctures to the packaging bag. This helps protect the integrity of the packaging bag and avoids material leakage or contamination caused by damage.

[0034] The design was further optimized by using a double-acting cylinder 9. The piston rod stroke and the opening / closing angle of the gripper 7 are controlled in conjunction with each other via a lever ratio of the guide block 8. This helps to precisely control the opening and closing action of the gripper 7, improving the automation and accuracy of the bag opening process.

[0035] The design was further optimized by connecting the bag-opening suction cup 5 to the vacuum device via a solenoid valve, and synchronizing the triggering of the vacuum suction action with the closing motion signals of the front bag-opening shaft 1 and the rear bag-opening shaft 2. This ensures that the packaging bag is stably held in place during the opening process, preventing opening failures caused by bag movement.

[0036] Further optimization involves installing a lower stopper 13 on the support 4. When clamped, the gripper 7 works in conjunction with the lower stopper 13 to grip the packaging bag. The synchronous, counter-clockwise movements of the front opening shaft 1 and the rear opening shaft 2, combined with the clamping force between the gripper 7 and the lower stopper 13, achieve zipper separation. This synchronized, counter-clockwise movement of the front and rear opening shafts, along with the clamping force between the gripper 7 and the lower stopper 13, helps to grip the packaging bag more stably and effectively separate the zipper, improving the success rate and efficiency of opening the bag.

[0037] The design has been further optimized by making the lower stopper 13 from a flexible silicone material. Its surface contacts the end of the gripper 7, enhancing clamping stability. This improves clamping stability and reduces opening failures caused by unstable clamping. Simultaneously, the flexible silicone material also provides cushioning, helping to protect the packaging bag from damage.

[0038] Working principle:

[0039] The reciprocating motion of opening the bag is achieved by connecting the front opening shaft 1 and the rear opening shaft 2 through gear 3. The support 4 is fixed with an opening suction cup 5 and a pull rod 6. The opening suction cup 5 is connected to a vacuum tube, and the pull rod 6 is connected to a gripper 7. The pull rod 6 guides the gripper 7 to open at a specific angle and move down to clamp the packaging bag. After clamping the packaging bag, it cooperates with the lower leather plug 13 to clamp the packaging bag. The gripper 7 is controlled by the cylinder 9 to achieve the clamping and releasing operation. The support 4 is also connected to a guide rod to ensure the guidance of the opening shaft when the support 4 moves. The reciprocating motion of the opening shaft drives the opening suction cup 5. When the opening suction cups 5 on both sides contact the packaging bag, the vacuum tube is turned on to suck open the packaging bag. When the packaging bag opening is opened a certain distance, the cylinder 9 pushes the gripper 7. The gripper 7 on both sides clamps the packaging bag, and the opening shaft resets to open the packaging bag and zipper.

[0040] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0041] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for opening a slide fastener of a packaging bag, characterized by: include: The power transmission module includes a front opening shaft (1) and a rear opening shaft (2) driven by a power source. The front opening shaft (1) and the rear opening shaft (2) achieve synchronous movement through gear (3) meshing. The guide module includes a bracket (4) fixed on the front opening shaft (1) and the rear opening shaft (2) respectively. The bracket (4) is fixed with a front opening guide shaft (10) and a rear opening guide shaft (11) to constrain the movement trajectory of the opening shaft. The adsorption positioning module includes a bag-opening suction cup (5) installed on the bracket (4), which fixes the opening of the packaging bag by vacuum adsorption; The execution module includes a pull rod (6) hinged to the bracket (4), a gripper (7) connected to the pull rod (6), and a guide block (8) rotatably connected to the gripper (7) via a shaft (12). The pneumatic control module includes a cylinder (9) that drives the guide block (8) to move. The cylinder (9) drives the gripper (7) to rotate around the shaft (12) by pushing the guide block (8), thereby realizing the clamping or releasing action of the gripper (7).

2. The apparatus of claim 1, wherein: The gear (3) is a spur gear with equal module (3), and the front opening shaft (1) and the rear opening shaft (2) are respectively provided with tooth grooves that mesh with the gear (3).

3. The apparatus of claim 1 wherein: The front opening guide shaft (10) and the rear opening guide shaft (11) are arranged in parallel and are perpendicular to the axial direction of the front opening shaft (1) and the rear opening shaft (2), respectively, forming a linear motion guide for the bracket (4).

4. The apparatus of claim 1 wherein: The curved surface at the end of the gripper (7) prevents it from puncturing the packaging bag.

5. The apparatus of claim 1 wherein: The cylinder (9) is a double-acting cylinder (9), and its piston rod stroke and the opening and closing angle of the gripper (7) are linked and controlled by the lever ratio relationship of the guide block (8).

6. The apparatus of claim 1 wherein: The bag-opening suction cup (5) is connected to the vacuum device through a solenoid valve, and the triggering timing of the vacuum suction action is synchronized with the closing motion signal of the front bag-opening shaft (1) and the rear bag-opening shaft (2).

7. The apparatus of claim 1 wherein: The bracket (4) is provided with a lower leather plug (13). When the gripper (7) is clamped, it forms a cooperative clamping of the packaging bag with the lower leather plug (13). The synchronous reverse movement of the front opening shaft (1) and the rear opening shaft (2) achieves zipper separation through the clamping force of the gripper (7) and the lower leather plug (13).

8. The apparatus of claim 7 wherein: The lower plug (13) is made of elastic silicone material, and its surface contacts the end of the gripper (7) to enhance clamping stability.

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