A packaging bag handle folding mechanism and folding method

Abstract

The present invention discloses a folding mechanism and a folding method for a bag handle of a packaging bag, which are characterized by comprising a feed guide and a discharge guide, a folding assembly is arranged between the feed guide and the discharge guide, the folding assembly can fold the bag handle substrate into a structure of at least two layers, and also comprises a welding assembly, the welding assembly can perform non-strength welding on the bag handle folded into multiple layers. The present invention also discloses a folding method for the bag handle of a packaging bag. The present invention has a simple structure and a reasonable design, can realize multi-layer folding of the bag handle substrate, and when in use, the non-strength welding portion thereof can be pulled apart to obtain a long bag handle for use.

Description

Technical Field

[0001] The invention relates to bag making equipment, in particular to a bag handle folding mechanism for a packaging bag. Background Art

[0002] At present, most packaging bags on the market are produced by bag making machines. Among them, the packaging bags are connected to bag handles at their openings to facilitate the use of the packaging bags. At present, the bag making machines on the market cut the bag handle substrate by pulling it to the cutting mechanism, and then forming the bag handle, and finally gluing or welding the bag handle to the formed bag body. In the actual production process, due to the limitations of the overall specifications, structure, and process of the equipment, the length of the bag handle substrate after cutting will be limited, resulting in a limited length of the formed bag handle. For some packaging bags that need to be set with long bag handles, generally, the bag body without bag handles is first produced, and then the long bag handles are manually glued or welded to the bag body. The labor intensity of the workers is very high, and the production efficiency and production quality are poor. Summary of the invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a packaging bag handle folding mechanism for solving the above-mentioned problem.

[0004] To this end, the present invention is implemented by adopting the following scheme:

[0005] A bag handle folding mechanism for a packaging bag is characterized by comprising at least two movable parts, which cooperate to fold the bag handle substrate into a structure of at least two layers, and also comprises a welding component, which can perform non-strength welding on the bag handle substrate folded into multiple layers.

[0006] Also included are a feed guide roller and a discharge guide roller for guiding the bag handle substrate.

[0007] The movable member comprises a first movable rod and a second movable rod, wherein the first movable rod is connected to a first movable driving assembly, and the second movable rod is connected to a second movable driving assembly.

[0008] The first movable driving assembly includes a first cylinder arranged horizontally, a piston rod of the first cylinder is connected to a first movable rod, a cylinder body of the first cylinder is arranged on a first lifting seat, the first lifting seat is connected to a piston rod of a second cylinder arranged vertically, the cylinder body of the second cylinder is arranged on a first movable seat, the first movable seat is connected to a piston rod of a third cylinder arranged horizontally, and the first cylinder and the third cylinder are arranged vertically in the horizontal direction.

[0009] The second movable driving assembly includes a fourth cylinder arranged horizontally, a piston rod of the fourth cylinder is connected to the second movable rod, a cylinder body of the fourth cylinder is arranged on a second lifting seat, and the second lifting seat is connected to the piston rod of a fifth cylinder arranged vertically.

[0010] The first movable driving assembly includes a sixth cylinder, a piston rod of the sixth cylinder is connected to the first movable rod, the second movable driving assembly includes a seventh cylinder, a piston rod of the seventh cylinder is connected to the second movable rod, the bag handle substrate can pass between the sixth cylinder and the seventh cylinder, and the cylinder body of the sixth cylinder and / or the seventh cylinder is eccentrically arranged on the rotating disk.

[0011] The welding assembly comprises an ultrasonic welding head, a pressing block is arranged corresponding to the ultrasonic welding head, the pressing block is connected to the mobile driving assembly, and the pressing block can press the folded bag substrate onto the ultrasonic welding head for non-strength welding.

[0012] The method for folding a bag handle substrate using the above packaging bag handle folding mechanism comprises the following steps:

[0013] S1, pulling the bag handle substrate to the folding station;

[0014] S2, stop pulling the bag handle substrate, control the movement of the movable part, pull the bag handle substrate, so that the bag handle substrate is folded into a multi-layer structure;

[0015] S3, controlling the action of the welding assembly to perform non-strength welding on the folded bag handle base material;

[0016] S4, controlling the movable part to separate from the bag handle substrate, and then pulling the bag handle substrate that has been folded and non-strength welded out of the folding station.

[0017] A bag handle folding mechanism of the packaging bag of the above technical solution can fold the bag handle substrate into multiple layers before the bag handle substrate is cut, and perform non-strength welding on the bag handle substrate in the folded state, so that the bag handle substrate can be pre-stored together. When used later, it is only necessary to pull open the non-strength welded part of the bag handle to make the bag handle become a single-layer structure, thereby increasing the length of the bag handle and obtaining the required long bag handle for use. The operation is very simple and at the same time replaces the traditional method of manually connecting the long bag handle to the formed bag body, greatly reducing the labor intensity of workers, and realizing the automatic connection between the bag handle and the bag body, effectively improving the overall production efficiency and processing quality of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention has the following accompanying drawings:

[0019] Figure 1 This is a structural diagram of the movable driving assembly of the present invention when the cylinder group drives the movable part;

[0020] Figure 2 for Figure 1 The structural diagram of the moving parts when they perform the next action;

[0021] Figure 3 for Figure 2 The structural diagram of the moving parts when they perform the next action;

[0022] Figure 4 for Figure 3 The structural diagram of the moving parts when they perform the next action;

[0023] Figure 5 for Figure 4 The structural diagram of the moving parts when they perform the next action;

[0024] Figure 6 for Figure 5 A in the middle is a partial enlarged view of the direction;

[0025] Figure 7 This is a structural diagram of a traditional bag handle connected to a bag body on the market;

[0026] Figure 8 A structural diagram showing the bag handle produced by the present invention being connected to the bag body;

[0027] Fig. 9 It is a plan view of the movable driving assembly of the present invention when the cylinder and the rotating disk cooperate to drive the movable part;

[0028] Fig.10 for Fig. 9 The middle rotating disk rotates 180 degrees to fold the base material of the bag.

[0029] In the figure: 1. the eighth cylinder; 2. the pressing block; 3. the fourth cylinder; 4. the feeding guide roller; 5. the bag handle substrate; 6. the first movable rod; 7. the first cylinder; 8. the first lifting seat; 9. the second cylinder; 10. the first movable seat; 11. the ultrasonic welding head; 12. the third cylinder; 13. the discharging guide roller; 14. the second movable rod; 15. the second lifting seat; 16. the fifth cylinder; 17. the bag handle substrate in the folded state; 18. the sixth cylinder; 19; the rotating disk; 20. the seventh cylinder. DETAILED DESCRIPTION

[0030] As shown in the figure, a bag handle folding mechanism disclosed by the present invention is characterized in that it includes at least two movable parts, and the movable parts cooperate to fold the bag handle substrate 5 into a structure of at least two layers, and also includes a welding assembly, and the welding assembly can perform non-strength welding on the bag handle substrate folded into multiple layers. It also includes a feed guide roller 4 and a discharge guide roller 13 for guiding the bag handle substrate 5. Specifically, the movable parts include a first movable rod 6 and a second movable rod 14, the first movable rod 6 is connected to the first movable drive assembly, and the second movable rod 14 is connected to the second movable drive assembly. The first movable drive assembly includes a first cylinder 7 arranged horizontally, the piston rod of the first cylinder 7 is connected to the first movable rod 6, the cylinder body of the first cylinder 7 is arranged on the first lifting seat 8, the first lifting seat 8 is connected to the piston rod of the second cylinder 9 arranged vertically, the cylinder body of the second cylinder 9 is arranged on the first movable seat 10, the first movable seat 10 is connected to the piston rod of the third cylinder 12 arranged horizontally, and the first cylinder 7 and the third cylinder 12 are arranged vertically in the horizontal direction. The second movable driving assembly includes a fourth cylinder 3 arranged horizontally, the piston rod of the fourth cylinder 3 is connected to the second movable rod 14, the cylinder body of the fourth cylinder 3 is arranged on the second lifting seat 15, and the second lifting seat 15 is connected to the piston rod of the fifth cylinder 16 arranged vertically. Of course, in addition to the first and second movable driving assemblies and the above-mentioned structures, the first movable driving assembly may also include a sixth cylinder 18, the piston rod of the sixth cylinder 18 is connected to the first movable rod 6, and the second movable driving assembly may also include a seventh cylinder 20, the piston rod of the seventh cylinder 20 is connected to the second movable rod 14, the bag handle substrate 5 can pass between the sixth cylinder 18 and the seventh cylinder 20, and the cylinder bodies of the sixth cylinder 18 and / or the seventh cylinder 20 are eccentrically arranged on the rotating disk 19, and the rotating disk 19 is driven and controlled to rotate by the corresponding motor. The welding assembly includes an ultrasonic welding head 11, and a pressing block 2 is provided corresponding to the ultrasonic welding head 11. The pressing block 2 is connected to the mobile driving assembly. In this embodiment, the mobile driving assembly is the eighth cylinder 1, and the piston rod of the eighth cylinder 1 is connected to the pressing block 2. The pressing block 2 can press the folded bag handle substrate 17 onto the ultrasonic welding head 11 for non-strength welding.

[0031] The method for folding a bag handle substrate using the above packaging bag handle folding mechanism comprises the following steps:

[0032] S1, pulling the bag handle substrate 5 to the folding station;

[0033] S2, stop pulling the bag handle substrate 5, control the movement of the movable part, pull the bag handle substrate, so that the bag handle substrate is folded into a multi-layer structure;

[0034] S3, controlling the welding assembly to perform non-strength welding on the bag handle substrate 17 in the folded state;

[0035] S4, controlling the movable part to separate from the bag handle substrate, and then pulling the bag handle substrate that has been folded and non-strength welded out of the folding station.

[0036] In step S2, when the multiple groups of cylinders of the present application are used to drive the first and second movable rods to lift and move to fold the bag handle substrate, the specific actions are: control the third cylinder 12 to drive the first movable rod 6 to move to the feeding end of the bag handle substrate, and control the first and fourth cylinders to drive the first and second movable rods to extend, and at this time the first and second movable rods are located on the upper and lower sides of the bag handle substrate 5, and then control the second cylinder 9 to drive the first movable rod 6 to descend, and control the fifth cylinder 16 to drive the second movable rod 14 to rise, pull the bag handle substrate up and down, and then control the third cylinder 12 to drive the first movable rod 6 to move back, and pull the bag handle substrate along with the momentum, so that the bag handle substrate is folded to obtain a bag handle substrate 17 in a folded state; in addition, the first and second movable rods can be separated from the bag handle substrate by controlling the first and fourth cylinders to drive the first and second movable rods to retract; it is also possible to set more movable rods and configure corresponding mobile drive components, so as to achieve more movable rods to cooperate with folding more layers of bag handle substrates.

[0037] In step S2, when the cylinder and rotating disk of the present application are used to drive the movable rod to fold the bag handle substrate, the specific action is: when the bag handle substrate 5 is pulled to the folding station, the sixth and seventh cylinders are controlled to drive the first and second movable rods to extend, and the first movable rod 6 and the second movable rod 14 are respectively located on the upper and lower sides of the bag handle substrate 5, and then the rotating disk 19 is controlled to rotate 180 degrees, and the first and second movable rods will drive the bag handle substrate to fold, and obtain the bag handle substrate 17 in a folded state; in addition, the first and second movable rods can be separated from the bag handle substrate by controlling the sixth and seventh cylinders to drive the first and second movable rods to retract.

[0038] The structure of the present invention can fold the bag handle substrate into multiple layers before cutting the bag handle substrate, and perform non-strength welding on the folded bag handle substrate, so that the bag handle substrate can be pre-stored together. When using it later, it is only necessary to pull apart the non-strength welded part of the bag handle to make the bag handle become a single-layer structure, thereby increasing the length of the bag handle and obtaining the required long bag handle for use. The operation is very simple and at the same time replaces the traditional method of manually connecting the long bag handle to the formed bag body, greatly reducing the labor intensity of the workers, and realizing the automatic connection between the bag handle and the bag body, effectively improving the overall production efficiency and processing quality of the packaging bag.

Claims

1. A packaging bag handle folding mechanism, characterized in that The invention comprises at least two movable parts, wherein the movable parts cooperate to fold the bag handle substrate (5) into a structure of at least two layers before the bag handle substrate (5) is cut, and further comprises a welding assembly, wherein the welding assembly can perform non-strength welding on the bag handle substrate folded into multiple layers, wherein the movable parts comprise a first movable rod (6) and a second movable rod (14), wherein the first movable rod (6) is connected to a first movable driving assembly, and the second movable rod (14) is connected to a second movable driving assembly, wherein the first movable driving assembly comprises a first cylinder (7) arranged transversely, wherein a piston rod of the first cylinder (7) is connected to the first movable rod (6), wherein a cylinder body of the first cylinder (7) is arranged on a first lifting seat (8), wherein the first lifting seat (8) is connected to a piston rod of a second cylinder (9) arranged vertically, wherein a cylinder body of the second cylinder (9) is arranged on a first movable seat (10), wherein the first movable seat (10) is connected to a piston rod of a third cylinder (12) arranged transversely, and wherein the first cylinder (7) and the third cylinder (12) are arranged vertically in the horizontal direction.

2. A packaging bag handle folding mechanism according to claim 1, characterized in that It also includes a feed guide roller (4) and a discharge guide roller (13) for guiding the bag handle substrate (5).

3. A packaging bag handle folding mechanism according to claim 1, characterized in that The second movable driving assembly comprises a fourth cylinder (3) arranged horizontally, the piston rod of the fourth cylinder (3) being connected to the second movable rod (14), the cylinder body of the fourth cylinder (3) being arranged on a second lifting seat (15), and the second lifting seat (15) being connected to the piston rod of a fifth cylinder (16) arranged vertically.

4. A packaging bag handle folding mechanism according to claim 1, characterized in that The welding assembly comprises an ultrasonic welding head (11), a pressing block (2) is arranged corresponding to the ultrasonic welding head (11), the pressing block (2) is connected to the mobile driving assembly, and the pressing block (2) can press the bag handle substrate (17) in a folded state onto the ultrasonic welding head (11) to perform non-strength welding.

5. A packaging bag handle folding mechanism, characterized in that The invention comprises at least two movable parts, wherein the movable parts cooperate to fold the bag handle substrate (5) into a structure of at least two layers before the bag handle substrate (5) is cut, and further comprises a welding assembly, wherein the welding assembly can perform non-strength welding on the bag handle substrate folded into multiple layers, wherein the movable parts comprise a first movable rod (6) and a second movable rod (14), wherein the first movable rod (6) is connected to a first movable driving assembly, and the second movable rod (14) is connected to a second movable driving assembly, wherein the first movable driving assembly comprises a sixth cylinder (18), wherein a piston rod of the sixth cylinder (18) is connected to the first movable rod (6), and wherein the second movable driving assembly comprises a seventh cylinder (20), wherein a piston rod of the seventh cylinder (20) is connected to the second movable rod (14), wherein the bag handle substrate (5) can pass between the sixth cylinder (18) and the seventh cylinder (20), and wherein the cylinder bodies of the sixth cylinder (18) and / or the seventh cylinder (20) are eccentrically arranged on a rotating disk (19).

6. A packaging bag handle folding mechanism according to claim 5, characterized in that The welding assembly comprises an ultrasonic welding head (11), a pressing block (2) is arranged corresponding to the ultrasonic welding head (11), the pressing block (2) is connected to the mobile driving assembly, and the pressing block (2) can press the bag handle substrate (17) in a folded state onto the ultrasonic welding head (11) to perform non-strength welding.

7. A method for folding a substrate of a packaging bag, characterized in that The following steps are involved: S1, pulling the bag handle substrate (5) to the folding station; S2, stop pulling the bag handle substrate (5), control the movement of the movable part, pull the bag handle substrate, so that the bag handle substrate is folded into a multi-layer structure before being cut; control the third cylinder (12) to drive the first movable rod (6) to move to the feeding end of the bag handle substrate, and control the first and fourth cylinders to drive the first and second movable rods to extend, and at this time, the first and second movable rods are located on the upper and lower sides of the bag handle substrate (5), and then control the second cylinder (9) to drive the first movable rod (6) to descend, and control the fifth cylinder (16) to drive the second movable rod (14) to rise, so as to pull the bag handle substrate up and down, and then control the third cylinder (12) to drive the first movable rod (6) to move back, and pull the bag handle substrate accordingly, so that the bag handle substrate is folded, and a bag handle substrate in a folded state (17) is obtained; in addition, the first and second movable rods can be separated from the bag handle substrate by controlling the first and fourth cylinders to drive the first and second movable rods to retract; S3, controlling the action of the welding assembly to perform non-strength welding on the bag handle substrate (17) in a folded state; S4, controlling the movable part to separate from the bag handle substrate, and then pulling the bag handle substrate that has been folded and non-strength welded out of the folding station.

8. A method for folding a substrate of a packaging bag, characterized in that The following steps are involved: S1, pulling the bag handle substrate (5) to the folding station; S2, stopping the pulling of the bag handle substrate (5), controlling the movement of the movable part, pulling the bag handle substrate, so that the bag handle substrate is folded into a multi-layer structure before being cut; when the bag handle substrate (5) is pulled to the folding station, controlling the sixth and seventh air cylinders to drive the first and second movable rods to extend, the first movable rod (6) and the second movable rod (14) are respectively located on the upper and lower sides of the bag handle substrate (5), and then controlling the rotating disk (19) to rotate 180 degrees, the first and second movable rods will drive the bag handle substrate to fold, and obtain a bag handle substrate (17) in a folded state; in addition, by controlling the sixth and seventh air cylinders to drive the first and second movable rods to retract, the first and second movable rods can be separated from the bag handle substrate; S3, controlling the action of the welding assembly to perform non-strength welding on the bag handle substrate (17) in a folded state; S4, controlling the movable part to separate from the bag handle substrate, and then pulling the bag handle substrate that has been folded and non-strength welded out of the folding station.

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