Inner bag hemming mechanism of multifunctional woven bag

Abstract

The utility model discloses a multifunctional woven bag inner bag hemming mechanism which comprises a hemming assembly, a wireless edge locking assembly and a heating plate, a flat plate for placing a bag body is arranged on one side of the hemming assembly, the bag body is conveyed on the flat plate, a bag opening of the bag body extends into the hemming assembly for automatic hemming, and the heating plate is arranged on the flat plate. The side face of the flat plate is further provided with a telescopic heating plate, the heating plate is located on the rear side of the hemming assembly, a bag opening extends into the heating plate after hemming, and the upper end and the lower end of the heating plate are each provided with a wireless edge locking assembly. By means of automatic edge curling and edge sealing, the automatic edge curling and sealing device can be directly applied to multifunctional woven bag automatic processing equipment.

Description

Technical Field

[0001] The utility model relates to the field of multi-functional woven bag processing equipment, in particular to an inner bag hemming mechanism for a multi-functional woven bag. Background Art

[0002] For a bag with a plastic inner bag nested inside, hemming is required. The current hemming method is that after a worker hemms the bag opening, the hemmed bag opening is placed in a hemming machine, and then the hemming machine fixes the hemmed bag opening. The above-mentioned hemming of the bag opening requires manual operation by a worker, so the hemming efficiency is relatively low. At the same time, another worker is needed, resulting in low hemming efficiency and high cost. Moreover, due to the need for manual hemming, it cannot be applied to an automated multi-functional woven bag processing equipment.

[0003] Meanwhile, when hemming is carried out manually by workers, the width of the hem cannot be controlled, resulting in uneven edges of the hemmed bag body, and the bag body is not beautiful after being packed. Summary of the Invention

[0004] Aiming at the above-mentioned deficiencies of the prior art, the utility model provides an inner bag hemming mechanism for a multi-functional woven bag, which is convenient for realizing automatic hemming and edge sealing of the multi-functional woven bag. Meanwhile, the width of the hem is consistent, ensuring the consistency of the bag body. Through automatic hemming and edge sealing, it can be directly applied to an automated multi-functional woven bag processing equipment.

[0005] To achieve the above object, the solution of the utility model is: an inner bag hemming mechanism for a multi-functional woven bag, including a hemming component, a wireless edge-sealing component and a heating plate. A flat plate for placing the bag body is arranged on one side of the hemming component, and the bag body is conveyed on the flat plate. The bag opening of the bag body extends into the hemming component for automatic hemming. A retractable heating plate is also arranged on the side surface of the flat plate. The heating plate is located behind the hemming component. After the bag opening is hemmed, it extends into the heating plate. Wireless edge-sealing components are arranged at both the upper and lower ends of the heating plate, and the wireless edge-sealing components press on the heating plate.

[0006] The wireless edge-sealing component is a pressing wheel driven by a motor, and the edge of the pressing wheel is serrated. The pressing wheel presses on the heating sheet.

[0007] The hemming assembly includes a hemming tensioning assembly, a hemming rod and a flanging rod. The hemming tensioning assembly consists of two sets of adsorption rods, the upper and the lower. The adsorption rods are connected to a negative pressure pump. Negative pressure holes are opened on the side of the adsorption rods facing the bag body. The adsorption rod at the top can be lifted and lowered, and the adsorption rod at the bottom is installed on the top surface of the flat plate. A translation seat is arranged on the side surface of the flat plate, and a translation assembly for moving the translation seat towards the bag body is arranged between the translation seat and the flat plate. Two hemming rods are installed on the translation seat, and a flanging rod is hinged to the outside of each hemming rod. A torsion spring is arranged at the hinge joint of the flanging rod and the hemming rod. The initial angle between the flanging rod and the hemming rod is an acute angle. When the hemming rod is lifted, the flanging rod folds the two sides of the bag body inwards. An opening module is installed on the two hemming rods.

[0008] Preferably, a heating cavity is arranged inside the heating plate, and a heating wire is placed in the heating cavity; a telescopic assembly is installed on the side of the heating plate away from the bag body. The telescopic assembly includes a guiding track and a sliding seat. A plurality of outward-extending guiding tracks are installed on the side surface of the flat plate, and a sliding seat that slides on the guiding track is sleeved on the guiding track. A cylinder is arranged between the sliding seat and the flat plate; a vertically arranged mounting seat is installed on the sliding seat, and two sets of pressing wheels arranged up and down are installed on the mounting seat. The pressing wheels are driven by a stepping motor, and the pressing wheels are installed on the output shaft of the stepping motor. The housing of the stepping motor is installed on a swing arm, and the swing arm is hinged to the mounting seat. A swing assembly is arranged between the swing arm and the mounting seat, and the pressing wheels are pressed on the heating plate through the swing assembly.

[0009] Preferably, the swing assembly includes an adjusting lead screw, a linkage plate and a linkage rod. A linkage plate is arranged on the outside of the mounting seat, and two linkage rods are installed on the linkage plate. The linkage rods pass through the mounting seat and slide along the mounting seat. A lead screw driven by a motor is installed between the linkage plate and the mounting seat. The lead screw passes through the linkage plate for screw fit. The motor is installed on the back surface of the mounting seat. A connecting rod is hinged to the end of the linkage rod, and the other end of the connecting rod is hinged to the swing arm. The hinge point between the swing arm and the connecting rod is located between the two linkage rods.

[0010] Compared with the prior art, the advantages of the present utility model are as follows: it is convenient to realize the automatic hemming and edge sealing of the multifunctional woven bag, and at the same time, the width of the hemming is consistent, ensuring the consistency of the bag body. Through automatic hemming and edge sealing, it can be directly applied to the automatic processing equipment of the multifunctional woven bag. Description of the Drawings

[0011] Figure 1 is the top view of the present utility model.

[0012] Figure 2 is the top view of the hemming assembly of the present utility model.

[0013] Figure 3Schematic diagram of the state of the hemming component of the present utility model hemming the bag body.

[0014] Figure 4 Top view of the wireless edge-locking component of the present utility model.

[0015] Figure 5 Cross-sectional view of the wireless edge-locking component of the present utility model.

[0016] Figure 6 Schematic diagram of the hemming tensioning component of the present utility model.

[0017] Among them, 1. Hemming component, 2. Hemming tensioning component, 3. Adsorption rod, 4. Negative pressure hole, 5. Hemming rod, 6. Flanging rod, 7. Translation seat, 8. Translation component, 9. Torsion spring, 10. Opening module, 11. Wireless edge-locking component, 12. Pressing wheel, 13. Heating plate, 14. Heating wire, 15. Telescopic component, 16. Guide track, 17. Sliding seat, 18. Mounting seat, 19. Stepper motor, 20. Swing arm, 21. Swing component, 22. Adjusting lead screw, 23. Linking plate, 24. Linking rod, 25. Connecting rod, 26. Flat plate. Detailed implementation manners

[0018] Now, in combination with the attached drawings, the present utility model will be further elaborated.

[0019] As Figure 1-6 shown, an inner bag hemming mechanism of a multifunctional woven bag includes a hemming component 1, a wireless edge-locking component 11 and a heating plate 13. On one side of the hemming component 1, there is a flat plate 26 for placing the bag body, that is, the hemming component 1, the wireless edge-locking component 11 and the heating plate 13 are installed on the left side of the flat plate 26. The bag body is conveyed on the flat plate 26. Two gantry frames are installed on the flat plate 26 by means of bolts. Below the two gantry frames, there is a longitudinally arranged conveying pressure belt (the conveying pressure belt includes a longitudinal rod and a conveyor belt. Each longitudinal rod is installed on the gantry frame by means of bolts. There are two longitudinal rods, and the front and rear ends of the two longitudinal rods are installed with rollers driven by a motor through bearings. A conveyor belt is sleeved on the two rollers of each longitudinal rod. The rollers are driven by a motor to rotate at a constant speed, and the conveyor belt installs the bag body on the flat plate 26, so as to realize the uniform conveyance of the bag body by the conveyor belt). The bag mouth of the bag body extends into the hemming component 1 for automatic hemming. On the left side surface of the flat plate 26, there is also a telescopic heating plate 13. The heating plate 13 is located behind the hemming component 1. After the bag mouth is hemmed, it extends into the heating plate 13. Wireless edge-locking components 11 are arranged at both the upper and lower ends of the heating plate 13. The wireless edge-locking components 11 press on the heating plate 13, so as to realize edge-locking after hemming; there are hemming notches and edge-locking notches on the left side of the flat plate. The hemming notches and the edge-locking notches are arranged front and rear. The hemming component 1 is installed in the hemming notch, and the wireless edge-locking component 11 and the heating plate 13 are installed in the edge-locking notch.

[0020] The wireless edge-locking assembly 11 has a motor-driven pressing wheel 12. The edge of the pressing wheel 12 is serrated. The pressing wheel 12 presses on the heating plate 13. The heating plate 13 heats the bag body, and then the pressing wheel 12 presses the bag body on the heating plate 13 to achieve edge-locking by hot pressing.

[0021] The hemming assembly 1 includes a hemming tensioning assembly 2, a hemming rod 5 and a folding rod 6. The hemming tensioning assembly 2 consists of two sets of upper and lower suction rods 3. The suction rods 3 are hollow tubes, and a plurality of suction holes are formed on the side of the suction rod facing the bag body. A cylinder is fixed between the upper suction rod 3 and the flat plate 26 by means of bolts, and the lifting of the upper suction rod is realized by the telescopic movement of the cylinder. A groove is formed on the flat plate 26, and the lower suction rod 3 is embedded in the groove. The two sets of upper and lower suction rods are arranged opposite to each other up and down. The suction rods 3 are connected to a negative pressure pump through a pipeline. A negative pressure hole 4 is formed on the side of the suction rod 3 facing the bag body. The upper suction rod 3 can be lifted. When the bag body moves between the two sets of suction rods 3, the upper suction rod 3 descends and presses on the left end of the bag body. The negative pressure pump is started, and the inside of the suction rod 3 is in negative pressure. The suction rod 3 adsorbs the upper and lower sides of the bag mouth of the bag body. Then the suction rod 3 at the tail rises, so that the bag mouth opens (since when the inner bag and the bag body are nested, glue is applied on the outer side of the inner bag mouth and adhered to the inner wall of the bag body, so that when hemming is carried out, the bag mouth of the bag body and the inner bag are hemmed together); A translation seat 7 is arranged on the left side surface of the flat plate 26. The translation seat 7 is located in the hemming notch of the flat plate. A hemming plate is fixed by welding on the left side of the hemming notch. A translation assembly 8 for moving the translation seat 7 towards the bag body is arranged between the translation seat 7 and the flat plate (the translation assembly 8 includes a hemming straight rod and a hemming cylinder. A hemming straight rod is fixed by welding on the left side surface of the translation seat 7. The hemming straight rod passes through the hemming plate and moves left and right along the hemming plate. A hemming cylinder is fixed by bolts between the hemming plate and the translation seat 7, and the translation of the translation seat 7 is realized by the hemming cylinder). Two hemming rods 5 are installed on the translation seat 7. A slider is fixed by welding at the root of the hemming rod 5. A horizontally arranged chute is formed on the right side surface of the translation seat 7, and the slider is embedded in the chute for left and right translation. A folding rod 6 is hinged on the outside of each one. A torsion spring 9 is fixed by welding at the hinge joint of the folding rod 6 and the hemming rod 5. The folding rod 6 is returned by the torsion spring 9. The initial angle between the folding rod 6 and the hemming rod 5 is an acute angle. When the hemming rod 5 is lifted, the folding rod 6 folds the two sides of the bag body inward. When the hemming rod 5 opens, the upper and lower sides of the bag mouth also curl inward. An opening module 10 is installed on the two hemming rods 5. The opening module 10 is a double-acting cylinder, and the two hemming rods are opened by the lifting of the double-acting cylinder;When working, the two-way cylinder retracts, the two hemming rods 6 move inward, the hemming cylinder rises, the translation seat 7 moves toward the bag opening of the bag body, the hemming rods extend into the bag opening, the two-way cylinder rises, the hemming rods 5 expand outward, so that the hemming rods 5 are located in the bag body, the folding rods 6 are located outside the bag body, and there is a gap between the hemming rods 5 and the inner wall of the bag body. The hemming rods 5 continue to rise, and the folding rods press the edges of the bag opening on both sides to fold inward. At the same time, the folding rods 6 swing to the left, and the vertical cylinder continues to rise, and the hemming rods 5 contact the inner wall of the bag body, and the folding rods 6 and the hemming rods 5 are attached, so that the bag body is rolled. After the hemming is completed, the two-way cylinder retracts, and the hemming rods 5 withdraw from the bag body through the retraction of the hemming cylinder. At the same time, the adsorption rods 3 press down to form a hemming crease to prevent the hemming from returning to its original position.

[0022] A heating cavity is formed in the heating plate 13, and an energized heating wire 14 is placed in the heating cavity, so that the heating plate 13 is at a high temperature. The right end of the heating plate 13 is a slope, which is convenient for inserting the heating plate 13 into the bag body. A telescopic assembly 15 is installed on the side of the heating plate 13 away from the bag body (i.e., the left side of the heating plate 13). The telescopic assembly 15 includes a guiding track 16 and a sliding seat 17. A plurality of outwardly extending guiding tracks 16 are installed on the side surface of the flat plate 26. The guiding tracks 16 are fixed on the inner side surfaces on both sides before and after the lock-edge notch by welding. A sliding seat 17 that slides on the guiding track 16 is clamped on the guiding track 16. The heating plate 13 is fixed to the right side of the sliding seat 17 by welding. A lock-edge plate is fixed to the left side of the lock-edge notch by welding. A cylinder is installed between the sliding seat 17 and the flat plate 26, that is, the cylinder block of the cylinder is installed on the lock-edge plate by bolt fastening, and the piston rod of the cylinder is installed on the sliding seat 17 by bolt fastening. The left and right movement of the sliding seat 17 is realized by the telescopic movement of the cylinder. A vertically arranged mounting seat 18 is fixed to the sliding seat 17 by welding. Mounting seats 18 are fixed to both the upper and lower sides of the sliding seat 17 by welding. Two groups of pressing wheels 12 arranged up and down are installed on the mounting seat 18. The pressing wheels 12 are driven by a stepping motor 19 (the pressing wheels 12 are fixed to the output shaft of the stepping motor 19 by bolt fastening, and the pressing wheels 12 are rotated by driving the stepping motor 19). The pressing wheels 12 are installed on the output shaft of the stepping motor 19. The housing of the stepping motor 19 is installed on the swing arm 20 by bolt fastening. One end of the swing arm 20 on the left side is hinged to the mounting seat 18, so that the swing 20 can swing. A swing assembly 21 is arranged between the swing arm 20 and the mounting seat 18. The pressing wheels 12 are pressed on the heating plate 13 through the swing assembly 21. When working, the sliding seat 17 moves to the right, and the heating plate 13 extends into the bag opening of the bag body. The pressing wheels 12 are swung downward and pressed on the heating plate 13 through the swing assembly 21. In this way, the lock-edge after curling is realized by hot pressing. Since the bag body moves during the lock-edge, the lock-edge of the entire bag opening is realized. When the lock-edge is completed, the swing assembly 21 makes the swing arm 20 move away from the heating plate 13, so that the pressing wheels release the pressing state of the bag body, and the sliding seat 17 moves to the left and exits the bag body.

[0023] The swing assembly 21 includes an adjustment lead screw 22, a linkage plate 23 and a linkage rod 24. A linkage plate 23 is arranged on the left side of the mounting base 18. Two horizontally arranged linkage rods 24 are mounted on the right side surface of the linkage plate 23 by welding. The linkage rods 24 pass through the mounting base 18 and move left and right along the mounting base 18. A lead screw driven by a motor is installed between the linkage plate 23 and the mounting base 18. The motor is installed on the right side surface of the mounting base 18 by bolts. A lead screw is fixed to the output shaft of the motor by welding. The lead screw passes through the linkage plate 23 for threaded engagement. By the forward and reverse rotation of the lead screw, the left and right movement of the linkage plate 23 is realized, and at the same time, the left and right movement of the linkage rods 24 is also realized. A connecting rod 25 is hinged to the right end of the linkage rod 24. The right end of the connecting rod 25 is hinged to the swing arm 20. The hinge point of the swing arm 20 and the connecting rod 25 is located between the two linkage rods 24, thus swinging the swing arm 20.

Claims

1. An inner bag hemming mechanism for a multifunctional woven bag, comprising a hemming component, a wireless edge-locking component and a heating plate. A flat plate for placing the bag body is arranged on one side of the hemming component, and the bag body is conveyed on the flat plate. The bag mouth of the bag body extends into the hemming component for automatic hemming. A retractable heating plate is also arranged on the side surface of the flat plate. The heating plate is located at the rear side of the hemming component. After the bag mouth is hemmed, it extends into the heating plate. Wireless edge-locking components are arranged at both the upper and lower ends of the heating plate, and the wireless edge-locking components press on the heating plate, and it is characterized in that ； The pressing wheel driven by the motor of the wireless hemming component has a serrated edge and presses on the heating sheet. The hemming component includes a hemming tensioning component, hemming rods and flanging rods. The hemming tensioning component consists of two sets of upper and lower suction rods, which are connected to a negative pressure pump. Negative pressure holes are opened on the side of the suction rods facing the bag body. The upper suction rod can move up and down, and the lower suction rod is installed on the top surface of the flat plate. A translation seat is arranged on the side of the flat plate, and a translation component for moving the translation seat towards the bag body is arranged between the translation seat and the flat plate. Two hemming rods are installed on the translation seat, and a flanging rod is hinged to the outside of each hemming rod. A torsion spring is arranged at the hinge of the flanging rod and the hemming rod. The initial angle between the flanging rod and the hemming rod is acute. When the hemming rod is lifted, the flanging rod folds the two sides of the bag inward. An opening module is installed on the two hemming rods.

2. The inner bag hemming mechanism of a multifunctional woven bag according to claim 1, characterized in that, A heating cavity is arranged in the heating plate, and a heating wire is placed in the heating cavity; a telescopic component is installed on the side of the heating plate away from the bag body. The telescopic component includes a guiding track and a sliding seat. A plurality of guiding tracks extending outward are installed on the side of the flat plate, and a sliding seat that slides on the guiding track is sleeved on the guiding track. A cylinder is arranged between the sliding seat and the flat plate; a vertically arranged mounting seat is installed on the sliding seat, and two sets of pressing wheels arranged up and down are installed on the mounting seat. The pressing wheels are driven by a stepping motor, and the pressing wheels are installed on the output shaft of the stepping motor. The housing of the stepping motor is installed on the swing arm, and the swing arm is hinged to the mounting seat. A swing component is arranged between the swing arm and the mounting seat to press the pressing wheel on the heating plate through the swing component.

3. The inner bag hemming mechanism of a multifunctional woven bag according to claim 2, characterized in that, The swing component includes an adjusting lead screw, a linkage plate and a linkage rod. A linkage plate is arranged outside the mounting seat, and two linkage rods are installed on the linkage plate. The linkage rods pass through the mounting seat and slide along the mounting seat. A lead screw driven by a motor is installed between the linkage plate and the mounting seat, and the lead screw passes through the linkage plate for threaded cooperation. The motor is installed on the back surface of the mounting seat. A connecting rod is hinged to the end of the linkage rod, and the other point of the connecting rod is hinged to the swing arm. The hinge point of the swing arm and the connecting rod is located between the two linkage rods.

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