A continuous pressing tool

Abstract

This utility model relates to the field of packaging bag production technology, specifically a continuous pressing fixture, including a machine support, a conveyor belt arranged inside the machine support, cardboard and printing paper arranged on the surface of the conveyor belt, a sticker module arranged behind the conveyor belt, and a pressing assembly arranged on the left side of the machine support. The pressing assembly includes a fixed frame, a first pressure roller, a first motor, a support frame, a lifting frame, a positioning block, a second pressure roller, a second motor, a support roller, and a support tube. The first pressure roller, two sets of second pressure rollers, and the support roller work together to perform three-stage pressing on the printing paper and cardboard, effectively improving the connection strength between the printing paper and cardboard. At the same time, through staged pressing, it effectively avoids the offset between the printing paper and cardboard during the pressing process, thus improving the production quality of packaging bags.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, specifically to a continuous pressing tool. Background Technology

[0002] Packaging bags are bags used to package various products, making it convenient to transport and store goods during production and distribution. To improve the quality of packaging bags, paper packaging bags are usually used, and printed paper is pasted on the surface of the cardboard. During the production process, glue is applied to the surface of the cardboard, and then the printed paper is pasted onto the surface of the cardboard. In order to ensure the flatness of the packaging bag and reduce displacement, a pressing tool is usually used to press the packaging bag tightly, so that the printed paper and the cardboard are tightly bonded together.

[0003] Currently, during the packaging bag pressing process, a single pressing device, such as a cylinder or hydraulic cylinder, is commonly used to directly press the packaging bag. This method has a simple structure, but the pressing effect is uneven, and because the glue has a certain fluidity, it is easy for the cardboard and printing paper to shift, affecting the production quality of the packaging bag.

[0004] Therefore, it is necessary to invent a continuous clamping fixture to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a continuous pressing fixture to solve the problems of uneven pressing effect and easy misalignment between cardboard and printing paper, which affects the production quality of packaging bags.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a continuous pressing fixture, including a device support, a conveyor belt arranged on the inner side of the device support, cardboard and printing paper arranged on the surface of the conveyor belt, a sticker module arranged on the rear side of the conveyor belt, and a pressing assembly arranged on the left side of the device support. The pressing assembly includes a fixed frame, a first pressure roller, a first motor, a support frame, a lifting frame, a positioning block, a second pressure roller, a second motor, a support roller, and a support tube.

[0007] By adopting the above technical solution, a conveyor belt is used to transport cardboard and printing paper. The sticker module is used to attach the printing paper to the surface of the cardboard. The first pressure roller is used to gently press the printing paper and cardboard to improve the stability between the printing paper and the printing plate. Then, the second pressure roller is used to press the printing paper and cardboard deeply to make the printing paper and cardboard stick together tightly.

[0008] Optionally, the fixing frame is fixedly connected to the upper surface of the equipment support near the sticker module, the two ends of the first pressure roller are rotatably connected to the front and rear ends of the fixing frame respectively, the first motor is fixedly installed on the rear side of the fixing frame, and the output end of the first motor is fixedly connected to the axis of the first pressure roller.

[0009] By adopting the above technical solution, the first motor is used to drive the first pressure roller to rotate. The distance between the first pressure roller and the conveyor belt is slightly lower than the height of the printing paper and the cardboard, so as to gently press the printing paper and the cardboard and improve the stability of the connection between the printing paper and the cardboard.

[0010] Optionally, the support frame is fixedly connected to the left end of the equipment bracket. The support frame is provided with two sets of lifting frames. Positioning blocks are fixedly connected to the front and rear ends of the two sets of lifting frames. A second pressure roller is rotatably connected between the front and rear positioning blocks of the two sets of lifting frames. A second motor is fixedly installed at the rear end of the rear positioning block of the two sets of lifting frames. The output end of the second motor is fixedly connected to the axis of the second pressure roller.

[0011] By adopting the above technical solution, the second motor is used to drive the second pressure roller to rotate and press the printing paper and cardboard.

[0012] Optionally, the support roller is located below the second pressure roller on the left side, and support pipes are fixedly connected to both the front and rear ends of the support roller. The two sets of support pipes are rotatably connected to the front and rear walls of the support frame, respectively.

[0013] By adopting the above technical solution, the second pressure roller on the right side works with the conveyor belt to press the printing paper and the cardboard a second time, and the second pressure roller on the left side works with the support roller to press the printing paper and the cardboard a third time. By pressing the printing paper and the cardboard in stages, the printing paper and the cardboard are tightly connected, while avoiding the offset between the printing paper and the cardboard.

[0014] Optionally, two sets of positioning grooves are provided on both the front and rear sides of the support frame, and the positioning block is slidably connected to the positioning groove.

[0015] By adopting the above technical solution, the positioning block slides up and down inside the positioning groove to limit the position of the lifting frame.

[0016] Optionally, the upper surface of the support frame is fixedly connected with two sets of threaded sleeves, and the inside of each set of threaded sleeves is threaded with a threaded rod. A connecting block is fixedly connected at the center of the upper surface of each set of lifting frames, and the lower end of the threaded rod is rotatably connected to the connecting block.

[0017] By adopting the above technical solution, the threaded rod is used to adjust the height of the lifting frame.

[0018] Optionally, a hot water tank is provided on the lower side of the support frame, a circulation pump is fixedly installed at the front of the upper end of the hot water tank, an inlet pipe is fixedly connected to the outlet of the circulation pump, and a return pipe is fixedly connected to the rear of the upper end of the hot water tank.

[0019] By adopting the above technical solution, the hot water tank is used to heat the water, the circulation pump, together with the inlet pipe, draws the hot water out of the hot water tank, and the return pipe is used to return the hot water to the inside of the hot water tank for reheating.

[0020] Optionally, the support roller has multiple sets of heating grooves arranged in a ring inside. The front and rear ends of the heating grooves are respectively connected to the through holes on the inner side of the front and rear sets of support tubes. The ends of the front and rear sets of support tubes away from the support roller are fixedly connected to a rotary joint. The upper end of the liquid inlet pipe is rotatably connected to the front rotary joint, and the upper end of the return pipe is rotatably connected to the rear rotary joint.

[0021] By adopting the above technical solution, the inlet pipe sends hot water into the interior of multiple heating tanks through the front support pipe, and then returns it to the hot water tank through the rear support pipe and the return pipe.

[0022] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model employs a first pressure roller, two sets of second pressure rollers, and a support roller to perform three-stage pressing on the printing paper and cardboard. The first pressure roller initially presses the paper and cardboard together, ensuring the stability of the second pressing. Then, the second pressure roller on the right side presses the paper and cardboard a second time, further bonding them together. Finally, the second pressure roller on the left side and the support roller perform a third pressing, ensuring a tight bond between the paper and cardboard. This effectively improves the connection strength between the paper and cardboard. Furthermore, the tiered pressing process effectively prevents the paper and cardboard from shifting during the pressing process, thus improving the quality of packaging bag production. 2. This utility model utilizes a circulating pump to transport hot water from inside the hot water tank to the interior of the heating tank, heating the support roller. This causes the adhesive between the printing paper and the cardboard to slightly soften during the three pressing processes performed by the support roller and the second pressure roller on the left, facilitating further pressing and improving the strength of the connection. At the same time, the printing paper and cardboard are ironed to improve their flatness and further enhance production quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the equipment support structure of this utility model; Figure 3This is a schematic diagram of the internal structure of the support frame of this utility model; Figure 4 This is a schematic diagram of the second pressure roller structure of this utility model; Figure 5 This is a schematic diagram of the external structure of the support roller of this utility model; Figure 6 This is a schematic diagram of the longitudinal cross-sectional structure of the support roller of this utility model; Figure 7 This is a schematic diagram of the transverse cross-sectional structure of the support roller of this utility model.

[0024] Explanation of reference numerals in the attached figures: 1. Equipment bracket; 11. Conveyor belt; 12. Cardboard; 13. Printing paper; 14. Fixing frame; 15. First pressure roller; 16. First motor; 17. Sticker module; 2. Support frame; 21. Positioning groove; 22. Lifting frame; 23. Positioning block; 24. Connecting block; 25. Threaded sleeve; 26. Threaded rod; 27. Second pressure roller; 28. Second motor; 3. Support roller; 31. Support pipe; 32. Rotary joint; 33. Hot water tank; 34. Circulation pump; 35. Liquid inlet pipe; 36. Return pipe; 37. Heating tank. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figures 1 to 5 The continuous pressing fixture shown includes a device support 1, a conveyor belt 11 is arranged on the inner side of the device support 1, cardboard 12 and printing paper 13 are arranged on the surface of the conveyor belt 11, a sticker module 17 is arranged on the rear side of the conveyor belt 11, and a pressing assembly is arranged on the left side of the device support 1. The pressing assembly includes a fixed frame 14, a first pressure roller 15, a first motor 16, a support frame 2, a lifting frame 22, a positioning block 23, a second pressure roller 27, a second motor 28, a support roller 3 and a support tube 31.

[0027] In the process of producing the packaging bag, hot melt adhesive is first applied to the upper surface of the cardboard 12 using an adhesive coating component. The cardboard 12 with the adhesive coating is then conveyed to the left by a conveyor belt 11. When the cardboard 12 moves to the front of the sticker module 17, the sticker module 17 (which is existing technology and will not be described in detail here) affixes the printed paper 13 to the upper side of the cardboard 12. As the conveyor belt 11 continues to move, the first pressure roller 15 presses the printed paper 13 and the cardboard 12 for the first time. Then, the printed paper 13 and the cardboard 12 are pressed a second and a third time by two sets of second pressure rollers 27 and support rollers 3. By using graded pressing technology, the connection strength between the printed paper 13 and the cardboard 12 is effectively improved, while avoiding misalignment between the printed paper 13 and the cardboard 12, thus improving production quality.

[0028] See Figures 1 to 4 The fixed frame 14 is fixedly connected to the upper surface of the equipment support 1 near the sticker module 17. The two ends of the first pressure roller 15 are rotatably connected to the front and rear ends of the fixed frame 14 respectively. The first motor 16 is fixedly installed on the rear side of the fixed frame 14. The output end of the first motor 16 is fixedly connected to the axis of the first pressure roller 15. The support frame 2 is fixedly connected to the left end of the equipment support 1. The support frame 2 is provided with two sets of lifting frames 22. The front and rear ends of the two sets of lifting frames 22 are fixedly connected with positioning blocks 23. The two sets of positioning blocks 23 in the two sets of lifting frames 22 are rotatably connected to the second pressure roller 27. The rear end of the rear positioning block 23 in the two sets of lifting frames 22 is fixedly installed with a second motor 28. The output end of the second motor 28 is fixedly connected to the axis of the second pressure roller 27. The support roller 3 is located on the lower side of the second pressure roller 27 on the left side. The front and rear ends of the support roller 3 are fixedly connected with support tubes 31. The two sets of support tubes 31 are rotatably connected to the front wall and the rear wall of the support frame 2 respectively.

[0029] Specifically, the output of the first motor 16 drives the first pressure roller 15 to rotate, which, in conjunction with the conveyor belt 11, performs an initial press on the printing paper 13 and the cardboard 12. This is only used to lightly press the packaging bag, squeezing out some excess glue and bonding the printing paper 13 and the cardboard 12 together, thus improving the stability of the connection. Then, the second motor 28 on the right and the second pressure roller 27 on the right cooperate to perform a deeper press on the printing paper 13 and the cardboard 12, further bonding them together. Then, the second motor 28 on the left and the second pressure roller 27 on the left cooperate to press the printing paper 13 and the cardboard 12 again, so that the printing paper 13 and the cardboard 12 are completely bonded together, effectively improving the connection strength and stability between the printing paper 13 and the cardboard 12.

[0030] See Figure 4The support frame 2 has two sets of positioning grooves 21 on both the front and rear sides. The positioning block 23 is slidably connected to the positioning groove 21. The upper surface of the support frame 2 is fixedly connected with two sets of threaded sleeves 25. The inside of each set of threaded sleeves 25 is threaded with a threaded rod 26. The center of the upper surface of each set of lifting frames 22 is fixedly connected with a connecting block 24. The lower end of the threaded rod 26 is rotatably connected to the connecting block 24.

[0031] In addition, during actual use, rotating the threaded rod 26 will cause the lifting frame 22 to slide up and down on the inner side of the support frame 2, thereby adjusting the height of the second pressure roller 27 so that it can be used to press packaging bags of different thicknesses, thus improving the adaptability of the equipment.

[0032] See Figure 3 , Figures 5 to 7 A hot water tank 33 is provided on the lower side of the support frame 2. A circulation pump 34 is fixedly installed at the front of the upper end of the hot water tank 33. An inlet pipe 35 is fixedly connected to the outlet end of the circulation pump 34. A return pipe 36 is fixedly connected to the rear of the upper end of the hot water tank 33. Multiple sets of heating grooves 37 are arranged in a ring inside the support roller 3. The front and rear ends of the heating grooves 37 are respectively connected to the through holes on the inner side of the front and rear sets of support pipes 31. A rotary joint 32 is fixedly connected to the end of the front and rear sets of support pipes 31 away from the support roller 3. The upper end of the inlet pipe 35 is rotatably connected to the front rotary joint 32, and the upper end of the return pipe 36 is rotatably connected to the rear rotary joint 32.

[0033] Meanwhile, as the hot melt adhesive gradually solidifies after prolonged transport, the hot water inside the hot water tank 33 can be pumped into the heating tank 37 through the inlet pipe 35 by the circulating pump 34. The hot water is used to heat the surface of the support roller 3. Then, the hot water flows back into the hot water tank 33 through the return pipe 36. During the process of the left second pressure roller 27 and the support roller 3 pressing the packaging bag three times, the warm support roller 3 can slightly soften the hot melt adhesive between the printing paper 13 and the cardboard 12, making it easier for the left second pressure roller 27 and the support roller 3 to press them further, thereby further improving the connection strength between the printing paper 13 and the cardboard 12. At the same time, the warm support roller 3 will iron the surface of the printing paper 13 and the cardboard 12, improving the flatness of the packaging bag surface and further improving the production quality of the packaging bag.

[0034] The working principle of this utility model is as follows: By using a first pressure roller 15, two sets of second pressure rollers 27 and a support roller 3 in combination, the printing paper 13 and the cardboard 12 are pressed in three stages, which effectively improves the connection strength between the printing paper 13 and the cardboard 12. At the same time, the graded pressing effectively prevents the printing paper 13 and the cardboard 12 from shifting during the pressing process, thus improving the production quality of the packaging bag. Meanwhile, by using a circulating pump 34 to transport hot water from the hot water tank 33 to the heating tank 37, the support roller 3 is heated, which facilitates further pressing of the printing paper 13 and the cardboard 12, improving the firmness of the connection. At the same time, the printing paper 13 and the cardboard 12 are ironed, which improves the flatness of the packaging bag and further improves the production quality.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A continuous clamping fixture, comprising a device support (1), characterized in that: The inner side of the equipment support (1) is provided with a conveyor belt (11), the surface of the conveyor belt (11) is provided with cardboard (12) and printing paper (13), the rear side of the conveyor belt (11) is provided with a sticker module (17), and the left side of the equipment support (1) is provided with a pressing assembly, which includes a fixing frame (14), a first pressure roller (15), a first motor (16), a support frame (2), a lifting frame (22), a positioning block (23), a second pressure roller (27), a second motor (28), a support roller (3), and a support tube (31).

2. The continuous clamping fixture according to claim 1, characterized in that: The fixed frame (14) is fixedly connected to the upper surface of the equipment bracket (1) near the sticker module (17). The two ends of the first pressure roller (15) are rotatably connected to the front and rear ends of the fixed frame (14) respectively. The first motor (16) is fixedly installed on the rear side of the fixed frame (14). The output end of the first motor (16) is fixedly connected to the axis of the first pressure roller (15).

3. The continuous clamping fixture according to claim 1, characterized in that: The support frame (2) is fixedly connected to the left end of the equipment bracket (1). The support frame (2) is provided with two sets of lifting frames (22). The front and rear ends of the two sets of lifting frames (22) are fixedly connected with positioning blocks (23). The two sets of positioning blocks (23) in the two sets of lifting frames (22) are rotatably connected with a second pressure roller (27). The rear end of the rear positioning block (23) in the two sets of lifting frames (22) is fixedly installed with a second motor (28). The output end of the second motor (28) is fixedly connected to the axis of the second pressure roller (27).

4. The continuous clamping fixture according to claim 3, characterized in that: The support roller (3) is located on the lower side of the second pressure roller (27) on the left. Both ends of the support roller (3) are fixedly connected to support pipes (31). The two sets of support pipes (31) are rotatably connected to the front wall and the rear wall of the support frame (2) respectively.

5. A continuous clamping fixture according to claim 1, characterized in that: The support frame (2) has two sets of positioning grooves (21) on both the front and rear sides, and the positioning block (23) is slidably connected to the positioning groove (21).

6. The continuous clamping fixture according to claim 1, characterized in that: The upper surface of the support frame (2) is fixedly connected with two sets of threaded sleeves (25), and the inside of each set of threaded sleeves (25) is threaded with a threaded rod (26). The center of the upper surface of each set of lifting frames (22) is fixedly connected with a connecting block (24), and the lower end of the threaded rod (26) is rotatably connected to the connecting block (24).

7. The continuous clamping fixture according to claim 1, characterized in that: A hot water tank (33) is provided on the lower side of the support frame (2). A circulation pump (34) is fixedly installed on the front side of the upper end of the hot water tank (33). An inlet pipe (35) is fixedly connected to the outlet end of the circulation pump (34). A return pipe (36) is fixedly connected to the rear side of the upper end of the hot water tank (33).

8. A continuous clamping fixture according to claim 7, characterized in that: Multiple sets of heating grooves (37) arranged in a ring are opened inside the support roller (3). The front and rear ends of the heating grooves (37) are respectively connected to the through holes on the inner side of the front and rear sets of support tubes (31). The ends of the front and rear sets of support tubes (31) away from the support roller (3) are fixedly connected to the rotary joints (32). The upper end of the liquid inlet pipe (35) is rotatably connected to the front rotary joint (32), and the upper end of the return pipe (36) is rotatably connected to the rear rotary joint (32).

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