Automatic inner rolling forming process and mechanism for bag opening of a packaging bag

Abstract

The application relates to the technical field of packaging bag processing, and discloses a process and mechanism for automatically internally rolling and forming a bag opening of a packaging bag, which comprises a supporting assembly, a clamp assembly is arranged at the top of the supporting assembly, a sealing assembly is arranged at the top of the supporting assembly, the clamp assembly comprises a first pressing plate, a supporting plate, a turnover plate, a connecting block, an adjusting cylinder, a positioning cylinder, a cylinder tail seat, a fixing rod, a mounting block, a link aluminum angle and a second pressing plate, the link aluminum angle is fixedly installed at the top of the supporting assembly, the first pressing plate is fixedly installed on the inner wall of the link aluminum angle, and the second pressing plate is fixedly installed on the front face of the first pressing plate. The process and mechanism for automatically internally rolling and forming a bag opening of a packaging bag are characterized in that the plastic-woven packaging bag opening is automatically internally rolled and fixed through the arrangement of the clamp assembly, the supporting assembly and the sealing assembly, so that the woven packaging bag opening is smoother, the quality is better, the durability is better, and the use effect is better.

Description

Technical Field

[0001] This invention relates to the field of packaging bag processing technology, specifically to a process and mechanism for automatically inwardly rolling the opening of a packaging bag. Background Technology

[0002] Packaging bags are bags used to package various goods, making it convenient to transport and store goods during production and distribution. They are widely used in daily life and industrial production. Plastic packaging bags include plastic woven bags and plastic film bags. The former is lightweight, high-strength, and corrosion-resistant. With the addition of a plastic film liner, it can prevent moisture and dampness. Plastic woven bags are mainly composed of polypropylene bags and polyethylene bags. According to the sewing method, they are divided into sewn bottom bags and sewn side bottom bags. The product obtained by weaving warp and weft is generally called a woven bag.

[0003] In the process of developing this application, the inventors discovered that the technology has at least the following problems: In the existing processing of plastic woven packaging bags, heat sealing equipment is mostly used to directly fix the edge of the bag opening, which easily causes many small burrs to be generated on the edge of the bag opening, resulting in scratches to users. At the same time, since the packaging bag is a product made of warp and weft weave, direct heat sealing is prone to errors and omissions, causing the internal structure of the packaging bag to be unstable, easy to loosen, and affecting the quality. Therefore, a process and mechanism for automatic inward rolling and forming of the bag opening of the packaging bag is proposed to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a process and mechanism for automatically inward-rolling and forming the opening of a packaging bag, which has advantages such as automatic inward-rolling and fixing, and solves the problem of poor sealing effect at the edge of the woven packaging bag opening.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic inward rolling forming mechanism for packaging bag opening, comprising a support component, a clip component disposed on the top of the support component, and a sealing component disposed on the top of the support component;

[0008] The clamp assembly includes a first pressure plate, a support plate, a flipping plate, a connecting block, an adjusting cylinder, a positioning cylinder, a cylinder tailstock, a fixing rod, a mounting block, a connecting angle aluminum, and a second pressure plate. A connecting angle aluminum is fixedly installed on the top of the support assembly. A first pressure plate is fixedly installed on the inner wall of the connecting angle aluminum. A second pressure plate is fixedly installed on the front of the first pressure plate. Two fixing rods are fixedly installed between the first and second pressure plates. A cylinder tailstock is fixedly installed on the opposite side of the fixing rods. A positioning cylinder is hinged inside the cylinder tailstock. A mounting block is rotatably installed at the output end of the positioning cylinder. A support plate is fixedly installed at the bottom of the mounting block. A flipping plate is hinged inside the support plate. A connecting block is fixedly installed on the outside of the flipping plate. An adjusting cylinder, with one end rotatably connected to the connecting block, is hinged to the opposite side of the support plate.

[0009] Preferably, the supporting assembly includes a first linear guide rail, a coiled bottom plate, a coiled movable plate, a connecting rod, a steering gear connecting seat, a cable chain upper fixing plate, a cylinder seat, a first heavy-duty slider, a movable plate cylinder, a cable chain, a second linear guide rail, and a second heavy-duty slider. The second linear guide rail is fixedly installed on both the top left and right sides of the coiled bottom plate. The second heavy-duty slider is slidably installed on the outside of the second linear guide rail. The coiled movable plate is fixedly installed on the top of the second heavy-duty slider. The first linear guide rail is fixedly installed on both the top left and right sides of the coiled movable plate. A first heavy-duty slider, with one end fixedly connected to a support plate, is slidably installed on the top of the first linear guide rail. The cable chain upper fixing plate is fixedly installed on the bottom of the coiled movable plate. A cable chain is fixedly installed inside the cable chain upper fixing plate. The steering gear connecting seat is fixedly installed on the top of the coiled movable plate. A cylinder seat is fixedly installed on the top of the coiled bottom plate. A movable plate cylinder is fixedly installed inside the cylinder seat. A connecting rod, with one end rotatably connected to the steering gear connecting seat, is fixedly installed at the output end of the movable plate cylinder.

[0010] Preferably, the sealing assembly includes an insert plate cylinder, a drive plate, an insert plate, an inner ejector cylinder, and a third heavy-duty slider. The third heavy-duty slider is slidably mounted on the outside of the second linear guide rail. The drive plate is fixedly mounted on the top of the third heavy-duty slider. An insert plate cylinder with one end rotatably connected to the drive plate is hinged to the top of the rolling mouth movable plate. An insert plate with one end extending to the front side of the rolling mouth movable plate is fixedly mounted on the top of the drive plate. Two inner ejector cylinders are fixedly mounted on the back of the insert plate.

[0011] Preferably, the output end of the positioning cylinder is rotatably connected to the mounting block via a fisheye bearing, the steering gear connecting seat is rotatably connected to the connecting rod via a fisheye bearing, the output end of the insert cylinder is rotatably connected to the driving plate via a fisheye bearing, the output end of the adjusting cylinder is rotatably connected to the connecting block via a fisheye bearing, and the first pressure plate is fixedly installed on the top of the rolling mouth movable plate.

[0012] A forming process for an automatic inward rolling forming mechanism for packaging bag openings includes the following steps:

[0013] 1) First, use a vacuum suction cup to open the bag and transport the opened woven packaging bag to the front of the mechanism. Activate the insert cylinder to move the bag opening of the woven packaging bag to the outside of the sealing assembly, and activate the inner ejector cylinder and clamp assembly to make the positioning cylinder drive the clamp assembly to move inward, contact the extended inner ejector cylinder, and make the bag corners turn inward by 90 degrees.

[0014] 2) Then, start the adjusting cylinder and the inner ejector cylinder. The inner ejector cylinder resets and the adjusting cylinder contracts, causing the connecting block to drive the flipping plate to rotate inside the support plate and contact the support plate. At this time, start the positioning cylinder to reset again, so that the two sides of the woven packaging bag opening are clamped and pulled to both sides to achieve automatic inward flipping.

[0015] 3) Finally, the insert plate cylinder is activated to drive the plate to move backward outside the second linear guide rail via the third heavy slider, so that the insert plate enters the opening of the woven packaging bag and brings the unrolled part of the bag into the bag. Then, the ultrasonic welding device set above and below the opening of the woven packaging bag is activated to fix the rolled edge.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention provides a process and mechanism for automatic inward rolling of packaging bag opening, which has the following beneficial effects:

[0018] The automatic inward rolling forming process and mechanism of this packaging bag, through the setting of clamp components, support components and sealing components, enables the plastic woven packaging bag opening to be automatically rolled inward and fixed, thereby making the woven packaging bag opening smoother, with better quality, better durability and better performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a top view of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the clip assembly structure of the present invention.

[0022] In the diagram: 1. First linear guide rail; 2. Rolled bottom plate; 3. Rolled movable plate; 4. Connecting rod; 5. Steering gear connecting seat; 6. First pressure plate; 7. Cable chain upper fixing plate; 8. Cylinder seat; 9. First heavy-duty slider; 10. Insert plate cylinder; 11. Movable plate cylinder; 12. Driving plate; 13. Support plate; 14. Cable chain; 15. Second linear guide rail; 16. Flipping plate; 17. Connecting block; 18. Adjusting cylinder; 19. Insert plate; 20. Positioning cylinder; 21. Cylinder tailstock; 22. Fixing rod; 23. Inner ejector pin cylinder; 24. Mounting block; 25. Connecting angle aluminum; 26. Second pressure plate; 27. Second heavy-duty slider; 28. Third heavy-duty slider. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-3 The automatic inward rolling forming mechanism for the opening of a packaging bag in this embodiment includes a support component, a clip component on the top of the support component, and a sealing component on the top of the support component.

[0025] In this embodiment, the clamp assembly includes a first pressure plate 6, a support plate 13, a flipping plate 16, a connecting block 17, an adjusting cylinder 18, a positioning cylinder 20, a cylinder tailstock 21, a fixing rod 22, a mounting block 24, a connecting angle aluminum 25, and a second pressure plate 26. The connecting angle aluminum 25 is fixedly installed on the top of the supporting assembly. The first pressure plate 6 is fixedly installed on the inner wall of the connecting angle aluminum 25. The second pressure plate 26 is fixedly installed on the front of the first pressure plate 6. A clamping device is fixedly installed between the first pressure plate 6 and the second pressure plate 26. There are two fixed rods 22. A cylinder tailstock 21 is fixedly installed on the opposite side of the fixed rods 22. A positioning cylinder 20 is hinged inside the cylinder tailstock 21. An installation block 24 is rotatably installed at the output end of the positioning cylinder 20. A support plate 13 is fixedly installed at the bottom of the installation block 24. A flip plate 16 is hinged inside the support plate 13. A connecting block 17 is fixedly installed outside the flip plate 16. An adjusting cylinder 18 is hinged on the opposite side of the support plate 13, with one end rotatably connected to the connecting block 17.

[0026] The support plate 13 includes a plate body and a clamping plate, the flipping plate 16 is hinged inside, and the adjusting cylinder 18 is fixed outside the plate body.

[0027] Specifically, after the clamp assembly enters the woven packaging bag, the adjusting cylinder 18 and the inner ejector cylinder 23 are activated. The inner ejector cylinder 23 is reset, and the adjusting cylinder 18 retracts, causing the connecting block 17 to drive the flipping plate 16 to rotate inside the support plate 13 and contact the support plate 13. At this time, the positioning cylinder 20 is activated again to reset, clamping the two sides of the woven packaging bag opening and pulling them to both sides. Under the action of lateral tension, the middle part of the bag naturally flips inward, thereby achieving a smooth seal at the edge of the woven packaging bag opening and improving the sealing quality.

[0028] In this embodiment, the supporting assembly includes a first linear guide rail 1, a coiled bottom plate 2, a coiled movable plate 3, a connecting rod 4, a steering gear connecting seat 5, a cable chain upper fixing plate 7, a cylinder seat 8, a first heavy-duty slider 9, a movable plate cylinder 11, a cable chain 14, a second linear guide rail 15, and a second heavy-duty slider 27. The second linear guide rail 15 is fixedly installed on both the top left and right sides of the coiled bottom plate 2. The second heavy-duty slider 27 is slidably installed on the outside of the second linear guide rail 15. The coiled movable plate 3 is fixedly installed on the top of the second heavy-duty slider 27. Each of the following is fixedly installed with a first linear guide rail 1. A first heavy-duty slider 9, one end of which is fixedly connected to the support plate 13, is slidably installed on the top of the first linear guide rail 1. A drag chain upper fixing plate 7 is fixedly installed on the bottom of the roll mouth movable plate 3. A drag chain 14 is fixedly installed inside the drag chain upper fixing plate 7. A steering gear connecting seat 5 is fixedly installed on the top of the roll mouth movable plate 3. A cylinder seat 8 is fixedly installed on the top of the roll mouth bottom plate 2. A movable plate cylinder 11 is fixedly installed inside the cylinder seat 8. A connecting rod 4, one end of which is rotatably connected to the steering gear connecting seat 5, is fixedly installed at the output end of the movable plate cylinder 11.

[0029] The cable chain 14 is designed to protect the wires and cables inside the clamp assembly; the second heavy-duty slider 27 and the first heavy-duty slider 9 are designed to ensure the stable operation of the roll mouth movable plate 3 and the support plate 13, respectively.

[0030] In this embodiment, the sealing assembly includes a plate cylinder 10, a drive plate 12, a plate 19, an inner ejector cylinder 23, and a third heavy-duty slider 28. The third heavy-duty slider 28 is slidably mounted on the outside of the second linear guide rail 15. The drive plate 12 is fixedly mounted on the top of the third heavy-duty slider 28. The top of the roll-up movable plate 3 is hinged with a plate cylinder 10, one end of which is rotatably connected to the drive plate 12. The top of the drive plate 12 is fixedly mounted with a plate 19, one end of which extends to the front side of the roll-up movable plate 3. Two inner ejector cylinders 23 are fixedly mounted on the back of the plate 19.

[0031] Specifically, the starter cylinder 10 drives the drive plate 12 to move outside the second linear guide rail 15 via the third heavy slider 28, thereby enabling the insert plate 19 to enter the inside of the woven packaging bag opening.

[0032] In this embodiment, the output end of the positioning cylinder 20 is rotatably connected to the mounting block 24 via a fisheye bearing, the steering connector 5 is rotatably connected to the connecting rod 4 via a fisheye bearing, the output end of the insert cylinder 10 is rotatably connected to the driving plate 12 via a fisheye bearing, the output end of the adjusting cylinder 18 is rotatably connected to the connecting block 17 via a fisheye bearing, and the first pressure plate 6 is fixedly installed on the top of the rolling mouth movable plate 3.

[0033] The use of fisheye bearings ensures a stable and more secure connection between the positioning cylinder 20 and the mounting block 24, the steering gear connecting seat 5 and the connecting rod 4, the insert cylinder 10 and the driving plate 12, and the adjusting cylinder 18 and the connecting block 17.

[0034] A forming process for an automatic inward rolling forming mechanism for packaging bag openings includes the following steps:

[0035] 1) First, use a vacuum suction cup to open the bag and transport the opened woven packaging bag to the front of the mechanism. Start the insert cylinder 10 to move the bag opening of the woven packaging bag to the outside of the sealing assembly. Start the inner ejector cylinder 23 and the clamp assembly to make the positioning cylinder 20 drive the clamp assembly to move inward and contact the extended inner ejector cylinder 23, and make the bag corners turn inward by 90 degrees.

[0036] 2) Then, start the adjusting cylinder 18 and the inner ejector cylinder 23. The inner ejector cylinder 23 resets and the adjusting cylinder 18 contracts, causing the connecting block 17 to drive the flipping plate 16 to rotate inside the support plate 13 and contact the support plate 13. At this time, start the positioning cylinder 20 again to reset, so that the two sides of the woven packaging bag opening are clamped and pulled to both sides to achieve automatic inward flipping.

[0037] 3) Finally, the insert cylinder 10 is activated to drive the drive plate 12 to move backward outside the second linear guide 15 via the third heavy slider 28, so that the insert plate 19 enters the opening of the woven packaging bag and brings the unrolled part of the bag body into the bag. Then, the ultrasonic welding device set above and below the opening of the woven packaging bag is activated to fix the rolled edge.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic inward rolling forming mechanism for the opening of a packaging bag, characterized in that, Including the support assembly, the top of the support assembly is provided with a clip assembly, the top of the support assembly is provided with a sealing assembly; The clip assembly comprises a first pressing plate (6), a supporting plate (13), a turnover plate (16), a connecting block (17), an adjusting cylinder (18), a positioning cylinder (20), a cylinder tail seat (21), a fixed rod (22), a mounting block (24), a link aluminum angle (25) and a second pressing plate (26), the top of the support assembly is fixedly installed with the link aluminum angle (25), the inner wall of the link aluminum angle (25) is fixedly installed with the first pressing plate (6), the front surface of the first pressing plate (6) is fixedly installed with the second pressing plate (26), a plurality of fixed rods (22) are fixedly installed between the first pressing plate (6) and the second pressing plate (26), the side, away from each other, of the fixed rod (22) is fixedly installed with the cylinder tail seat (21), the inside of the cylinder tail seat (21) is hingedly connected with the positioning cylinder (20), the output end of the positioning cylinder (20) is rotatably installed with the mounting block (24), the bottom of the mounting block (24) is fixedly installed with the supporting plate (13), the inside of the supporting plate (13) is hingedly connected with the turnover plate (16), the outside of the turnover plate (16) is fixedly installed with the connecting block (17), the side, away from each other, of the supporting plate (13) is hingedly connected with the adjusting cylinder (18) having one end rotatably connected with the connecting block (17).

2. The automatic in-roll forming mechanism of a bag opening of a packaging bag according to claim 1, characterized in that, The support assembly comprises a first straight line guide rail (1), a roll-up bottom plate (2), a roll-up movable plate (3), a connecting rod (4), a steering gear connecting seat (5), an upper fixed plate of a drag chain (7), a cylinder seat (8), a first heavy slide block (9), a movable plate cylinder (11), a drag chain (14), a second straight line guide rail (15) and a second heavy slide block (27), the top of the roll-up bottom plate (2) is fixedly installed with the second straight line guide rail (15) on the left and right sides, the outside of the second straight line guide rail (15) is slidably installed with the second heavy slide block (27), the top of the second heavy slide block (27) is fixedly installed with the roll-up movable plate (3), the top of the roll-up movable plate (3) is fixedly installed with the first straight line guide rail (1) on the left and right sides, the top of the first straight line guide rail (1) is slidably installed with the first heavy slide block (9) having one end fixedly connected with the supporting plate (13), the bottom of the roll-up movable plate (3) is fixedly installed with the upper fixed plate of the drag chain (7), the inside of the upper fixed plate of the drag chain (7) is fixedly installed with the drag chain (14), the top of the roll-up movable plate (3) is fixedly installed with the steering gear connecting seat (5), the top of the roll-up bottom plate (2) is fixedly installed with the cylinder seat (8), the inside of the cylinder seat (8) is fixedly installed with the movable plate cylinder (11), the output end of the movable plate cylinder (11) is fixedly installed with the connecting rod (4) having one end rotatably connected with the steering gear connecting seat (5).

3. The automatic in-roll forming mechanism of a bag opening of a packaging bag according to claim 2, characterized in that, The sealing assembly comprises a plug plate cylinder (10), a driving plate (12), a plug plate (19), an inner pin cylinder (23) and a third heavy-duty slider (28), the third heavy-duty slider (28) is slidably installed outside the second linear guide rail (15), the top of the third heavy-duty slider (28) is fixedly installed with the driving plate (12), the top of the sealing movable plate (3) is hingedly connected with the plug plate cylinder (10) which is rotatably connected with the driving plate (12) at one end, the top of the driving plate (12) is fixedly installed with the plug plate (19) which extends to the front side of the sealing movable plate (3) at one end, and the back of the plug plate (19) is fixedly installed with two inner pin cylinders (23).

4. The automatic in-roll forming mechanism of a bag opening of a packaging bag according to claim 3, characterized in that, The output end of the positioning cylinder (20) is rotatably connected with the mounting block (24) through a fish-eye bearing, the steering connector base (5) is rotatably connected with the connecting rod (4) through a fish-eye bearing, the output end of the plug plate cylinder (10) is rotatably connected with the driving plate (12) through a fish-eye bearing, the output end of the adjusting cylinder (18) is rotatably connected with the connecting block (17) through a fish-eye bearing, and the first pressing plate (6) is fixedly installed on the top of the sealing movable plate (3).

5. The forming process of a bag mouth automatic inner rolling forming mechanism of a packaging bag according to any one of claims 3-4, characterized in that, The method comprises the following steps: 1) first, the bag is opened by using a vacuum suction cup, and the opened woven packaging bag is transported to the front side of the mechanism, the plug plate cylinder (10) is started to move the bag opening of the woven packaging bag to the outside of the sealing assembly, the inner pin cylinder (23) and the clamp assembly are started, the positioning cylinder (20) drives the clamp assembly to move inward to contact the extended inner pin cylinder (23), and the bag corner is turned inward by 90 degrees; 2) then, the adjusting cylinder (18) and the inner pin cylinder (23) are started, the inner pin cylinder (23) is reset, the adjusting cylinder (18) is retracted to drive the connecting block (17) to rotate the turnover plate (16) inside the supporting plate (13) and contact the supporting plate (13), at this time, the positioning cylinder (20) is started again to reset, the woven packaging bag opening is clamped on both sides and pulled to the two sides to realize automatic turning inward; 3) finally, the plug plate cylinder (10) drives the driving plate (12) to move backward outside the second linear guide rail (15) through the third heavy-duty slider (28), the plug plate (19) enters the woven packaging bag opening, and the middle part of the bag body is brought into the bag, then the ultrasonic welding device arranged above and below the woven packaging bag opening is started to fix the edge.

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