Bag opening stretching and heat sealing device

Abstract

The utility model relates to a bag opening stretching and heat sealing device which comprises a supporting frame, connecting plates are arranged on the two sides of the supporting frame respectively, a fixing transverse rod is arranged below the supporting frame, and mounting plates are arranged at the two ends of the fixing transverse rod respectively. The clamping plate air cylinders are connected with the two mounting plates through first connecting pieces correspondingly. Piston rods of the clamping plate air cylinders are provided with corresponding heat sealing clamping plates correspondingly. And the moving assemblies are installed on the connecting plate through second connecting pieces correspondingly, and clamping jaw air cylinders are arranged below the moving assemblies correspondingly. The movable clamping jaw air cylinder is arranged at the bag opening, the bag opening can be stretched outwards after being clamped by the clamping jaw air cylinder through the moving assembly, the bag opening is kept stretching, the conditions that the bag opening is wrinkled and twisted in the heat sealing process are avoided, and the yield is improved; by adjusting the moving stroke of the moving assembly, the bag opening stretching effect can be better guaranteed; the device is simple in structure, convenient to install and maintain and high in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology and relates to a bag opening stretching and heat sealing device. Background Technology

[0002] Packaging equipment is widely used in various industries. Among them, bag opening packaging machines are mostly used to heat seal the bag opening to complete the material packaging operation. However, in actual application, regardless of the packaging bag, the opening cannot be guaranteed to be straight during heat sealing, resulting in wrinkles, twists and other phenomena after heat sealing, which affects the appearance of the packaging bag, and may even lead to extreme situations such as the bag opening being leaked, causing a lot of inconvenience. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a bag opening stretching heat sealing device that can stretch the bag opening of a packaging bag and keep the bag opening stretched.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A bag opening stretch heat sealing device, comprising:

[0006] A support frame, wherein connecting plates are provided on both sides of the support frame, a fixed crossbar is provided on the bottom of the support frame, and mounting plates are provided at both ends of the fixed crossbar;

[0007] The clamping cylinder is connected to two mounting plates by a first connecting member, and the piston rod of the clamping cylinder is provided with corresponding heat-sealing clamps.

[0008] The movable components are respectively mounted on the connecting plate using second connectors. Each movable component has a gripper cylinder on its lower side, and each gripper cylinder has a clamping block that can cooperate with each other on its two grippers.

[0009] Preferably, the moving component includes a fixed plate, a lifting cylinder is provided on the fixed plate, a lifting platform is provided on the piston rod of the lifting cylinder, a lifting bracket is provided on one side of the lifting platform, a tension cylinder is provided below the lifting bracket, and a mounting bracket for installing a gripper cylinder is provided below the tension cylinder.

[0010] Preferably, the heat-sealing clamps are connected to the piston rods of the clamp cylinders via fixed brackets.

[0011] Preferably, the two corresponding clamping blocks are provided with protrusions and grooves that can cooperate with each other.

[0012] Preferably, a first limit switch is provided at the upper end of the lifting cylinder, and a second limit switch is provided at the lower end of the lifting cylinder; a trigger block that can cooperate with the second limit switch is provided on one side of the lifting bracket.

[0013] Preferably, the first limit switch and the second limit switch are respectively connected to the lifting cylinder via connecting blocks.

[0014] Preferably, the lifting cylinder is equipped with a regulating valve.

[0015] Preferably, the clamping block is made of rubber.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This invention features a movable gripper cylinder at the bag opening. By moving the component, the gripper cylinder can clamp the bag opening and then stretch it outwards, keeping the bag opening extended and preventing wrinkles or twisting during heat sealing, thus improving the yield rate. Adjusting the stroke of the movable component further ensures the stretching effect of the bag opening. This invention has a simple structure, is easy to install and maintain, and is highly practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the mobile component of this utility model.

[0020] Figure 3 This is a front view schematic diagram of the present utility model.

[0021] In the diagram: 1. Support frame; 2. Connecting plate; 3. Fixed crossbar; 4. Mounting plate; 5. Clamping cylinder; 7. First connecting piece; 8. Heat-sealed clamping plate; 9. Second connecting piece; 10. Grip cylinder; 11. Clamping block; 12. Fixed plate; 13. Lifting cylinder; 14. Lifting platform; 15. Lifting bracket; 16. Tensioning cylinder; 17. Mounting bracket; 18. Fixed bracket; 19. Protrusion; 20. Groove; 21. First limit switch; 22. Second limit switch; 23. Trigger block; 24. Connecting block; 25. Adjusting valve. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] This embodiment proposes a bag opening stretching heat sealing device, including a support frame 1, a clamping cylinder 5, and a moving assembly. The support frame 1 provides installation space for each component.

[0024] like Figures 1-3 As shown, connecting plates 2 are respectively provided on both sides of the support frame 1, and a fixed crossbar 3 is provided on the bottom of the support frame 1. Mounting plates 4 are respectively provided at both ends of the fixed crossbar 3.

[0025] The clamping cylinder 5 is connected to two mounting plates 4 by the first connecting piece 7. The first connecting piece 7 is a connecting bolt, which is convenient for installation. The piston rod of the clamping cylinder 5 is provided with corresponding heat-sealing clamping plates 8. The two heat-sealing clamping plates 8 cooperate to heat-seal the opening of the packaging bag.

[0026] The moving components are respectively mounted on the connecting plate 2 using the second connector 9. The moving components are respectively provided with gripper cylinders 10 on their lower sides. The two grippers of the gripper cylinders 10 are respectively provided with clamping blocks 11 that can cooperate with each other. The clamping blocks 11 can clamp the two sides of the bag opening. Then, through the movement of the moving components, they are stretched outward to keep the bag opening extended.

[0027] Furthermore, the moving component includes a fixed plate 12, on which a lifting cylinder 13 is provided, which enables the gripper cylinder 10 to move up and down.

[0028] A lifting platform 14 is provided on the piston rod of the lifting cylinder 13. A lifting bracket 15 is provided on one side of the lifting platform 14. A tension cylinder 16 is provided below the lifting bracket 15. A mounting bracket 17 for mounting the gripper cylinder 10 is provided below the tension cylinder 16. The tension cylinder 16 can drive the gripper cylinder 10 to move outward by means of the mounting bracket 17.

[0029] Furthermore, the heat-sealing plates 8 are respectively connected to the piston rod of the plate cylinder 5 by the fixed bracket 18, and the fixed bracket 18 makes the two heat-sealing plates 8 fit better.

[0030] Furthermore, the two corresponding clamping blocks 11 are respectively provided with protrusions 19 and grooves 20 that can cooperate with each other, and the protrusions 19 and grooves 20 make the clamping effect of the clamping block 11 on the bag opening better.

[0031] Furthermore, a first limit switch 21 is provided at the upper end of the lifting cylinder 13, and a second limit switch 22 is provided at the lower end of the lifting cylinder 13; a trigger block 23 that can cooperate with the second limit switch 22 is provided on one side of the lifting bracket 15; the first limit switch 21 and the second limit switch 22 are used to limit the vertical movement stroke of the lifting cylinder 13.

[0032] Furthermore, the first limit switch 21 and the second limit switch 22 are respectively connected to the lifting cylinder 13 via the connecting block 24.

[0033] Furthermore, the lifting cylinder 13 is equipped with an adjusting valve 25, which can adjust the working stroke of the lifting cylinder 13 to adapt to different working conditions.

[0034] Furthermore, the clamping block 11 is made of rubber, and the clamping block 11 supported by the rubber material 11 will not damage the packaging bag.

[0035] Working principle: When in use, the entire device is installed on the packaging machine via the support frame 1. When the packaging machine is working, after the packaging bag is filled, the packaging bag is vacuumed by the vacuuming device. At the same time, the moving component is lowered by the lifting cylinder 13. After it reaches the position, the gripper cylinder 10 is activated, the clamping block 11 clamps the grippers on both sides of the bag opening, the stretching cylinder 16 is activated, driving the gripper cylinder 10 to move outward and stretch the bag opening; the clamping plate cylinder 5 is activated, the heat sealing plate 8 clamps the bag opening, and the bag opening is heat sealed after being powered on.

[0036] It is understood that the above embodiments are merely exemplary models used to illustrate the principles of this utility model, and this utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A bag mouth stretch-hoie device, characterized by Include: Support frame (1), both sides of the support frame (1) are provided with connecting plate (2), the lower surface of the support frame (1) is provided with fixed crossbar (3), both ends of the fixed crossbar (3) are provided with mounting plate (4) respectively; Clamp plate cylinder (5), the clamp plate cylinder (5) is connected with two mounting plates (4) by first connecting piece (7) respectively, the piston rod of the clamp plate cylinder (5) is provided with corresponding heat sealing clamp plate (8) respectively; Moving assembly, the moving assembly is installed on the connecting plate (2) by second connecting piece (9) respectively, the lower surface of the moving assembly is provided with clamping jaw cylinder (10) respectively, both clamping jaws of the clamping jaw cylinder (10) are provided with clamping block (11) capable of cooperating with each other respectively.

2. A bag mouth stretch-hoie-seaming apparatus according to claim 1, wherein The moving assembly includes fixed plate (12), the fixed plate (12) is provided with lifting cylinder (13), the piston rod of the lifting cylinder (13) is provided with lifting platform (14), one side of the lifting platform (14) is provided with lifting support (15), the lower surface of the lifting support (15) is provided with stretching cylinder (16), the lower surface of the stretching cylinder (16) is provided with mounting support (17) for mounting clamping jaw cylinder (10).

3. A bag mouth stretch-hoie-seaming apparatus according to claim 1, wherein The heat sealing clamp plate (8) is connected with the piston rod of the clamp plate cylinder (5) by fixed support (18) respectively.

4. A bag mouth stretch-hoie-seaming apparatus according to claim 1, wherein Both corresponding clamping blocks (11) are provided with convex strip (19) and groove (20) capable of cooperating with each other respectively.

5. A bag mouth stretch-hoie-seaming apparatus according to claim 1, wherein The upper end of the lifting cylinder (13) is provided with first limit switch (21), the lower end of the lifting cylinder (13) is provided with second limit switch (22), one side of the lifting support (15) is provided with trigger block (23) capable of cooperating with the second limit switch (22).

6. A bag mouth stretch-hoie-seaming apparatus according to claim 5, wherein The first limit switch (21) and the second limit switch (22) are connected with the lifting cylinder (13) by connecting block (24) respectively.

7. A bag mouth stretch-hoie-seaming apparatus according to claim 1, wherein The lifting cylinder (13) is provided with regulating valve (25).

8. A bag mouth stretch-hoie-seaming apparatus according to claim 4, wherein The clamping block (11) is made of rubber material.

Images