Thin film bag exhaust hole machining mechanism

Abstract

The utility model discloses a thin film bag exhaust hole machining mechanism which comprises a rack, a brush roller and an air hole machining set. A cross beam is arranged on the rack; the air hole machining set is arranged on the cross beam in a sliding mode and comprises a moving seat, a swing block and a rotating shaft, the moving seat is arranged on the cross beam in a sliding mode, the swing block is arranged on the moving seat in a swinging mode through a pivot, the rotating shaft is arranged on the swing block in a rotating mode, and the rotating shaft is connected with a first driving piece driving the rotating shaft to rotate. A needle roller or a blade is mounted on the rotating shaft, and the swinging block is connected with a second driving piece for driving the swinging block to swing. In the film conveying process, a film passes through the needle roller and the brush roller or the blade and the brush roller which are in press fit, the film is rolled by the needle roller to form a circular exhaust hole and rolled by the blade to form a linear exhaust hole, and after the film with the exhaust hole forms a film bag, gas in the bag can be exhausted through the exhaust hole.

Description

Technical Field

[0001] This utility model relates to a mechanism for processing exhaust holes in thin film bags. Background Technology

[0002] Granular and powdered products in industries such as food, building materials, and chemicals are mainly packaged using filling methods. These packaging bags must have both sealing and venting functions. Venting is to expel the gas inside the bag after filling, which facilitates the stacking, transportation, and sales of the filled bags. If there is gas inside the bag, it is not conducive to the stacking and transportation of the product, and the packaging bag is also very prone to rupture under pressure.

[0003] Current packaging bag processing equipment can only form packaging bags and cannot be used to process film venting holes and film venting bags. Therefore, film venting bags cannot yet be mass-produced. Summary of the Invention

[0004] In view of the technical problems existing in the background art, the technical problem to be solved by this utility model is to provide a film bag exhaust hole processing mechanism, which is suitable for the mass production of film exhaust bags.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the film bag venting hole processing mechanism is characterized by including a frame, a brush roller and a venting hole processing group;

[0006] The frame is equipped with crossbeams;

[0007] The air hole processing group is slidably mounted on the crossbeam. The air hole processing group includes a movable seat, a swing block and a rotating shaft. The movable seat is slidably mounted on the crossbeam. The swing block is pivotally mounted on the movable seat. The rotating shaft is rotatably mounted on the swing block and is connected to a first driving member that drives its rotation. A needle roller or a blade is mounted on the rotating shaft. The swing block is connected to a second driving member that drives its swing.

[0008] When processing vent holes in a film, a needle roller or blade on a rotating shaft presses against a brush roller, and the film passes between them, forming vent holes on the film.

[0009] In this invention, during the film transport process, the film passes through a needle roller and a brush roller or a blade and a brush roller that are pressed together. The film is rolled by the needle roller to form a circular vent hole, and rolled by the blade to form a linear vent hole. After the film with vent holes is formed into a film bag, the gas inside the bag can be discharged through the vent holes.

[0010] Preferably, the first driving component includes a first motor, a first transmission wheel, a second transmission wheel, and a transmission belt. The first and second transmission wheels are respectively mounted on the output shaft and rotating shaft of the first motor, and the transmission belt is mounted on the first and second transmission wheels. The output shaft of the first motor is coaxially arranged with the pivot, and the first motor is mounted on a movable base. The oscillating block oscillates, causing the needle roller or blade on the rotating shaft to press or separate from the brush roller, but the first motor does not oscillate with the oscillating block. This makes the operation of the first motor more stable, and at the same time, the rotation of the rotating shaft driven by the first motor is not affected by the oscillating block, ensuring stable processing of the exhaust holes.

[0011] Preferably, the second driving component includes a second motor, an eccentric wheel, and a connecting rod. The eccentric wheel is connected to the output shaft of the second motor, one end of the connecting rod is rotatably connected to the eccentric wheel, and the other end of the connecting rod is rotatably connected to the swing block. The second motor drives the eccentric wheel to rotate, and the eccentric wheel drives the swing block to swing around the pivot point via the connecting rod. This results in more stable and faster mechanical transmission, making the processing of the exhaust hole more stable and precise.

[0012] Preferably, the blades are provided with several pieces evenly distributed on the outer circumference of the plate-shaped turntable, with gaps between adjacent blades, and the blades are arranged in a circle. The turntable has a central hole that matches the rotating shaft. A first motor drives the rotating shaft to rotate, and the turntable rotates in opposite directions with the brush roller. The blades on the turntable form longitudinal, intermittent linear cutting edges on the film.

[0013] Preferably, the turntables are arranged in several groups, all sleeved on the rotating shaft. A partition plate is provided between adjacent turntables, and the blades on adjacent turntables are staggered. The turntables are arranged laterally on the rotating shaft, which can form multiple transverse linear blades on the film, and the adjacent linear blades are staggered to improve the flowability of the exhaust holes.

[0014] Preferably, a fixing plate is mounted on the rotating shaft. The fixing plate has locking holes, and locking bolts are fitted into the locking holes. The turntable and the isolation plate each have a first through hole and a second through hole that are axially connected to the mounting holes. The locking bolts pass through the first and second through holes and are threaded into the locking holes. This installation method is convenient, and the isolation plates space the turntables apart, thus spacing the linear cutting edges on the film and preventing damage to the strength and durability of the film bag.

[0015] Preferably, the crossbeam is equipped with a guide rail and an adjusting screw, the guide rail is equipped with a slide, and the adjusting screw is threadedly connected to a nut. The slide and nut are mounted on a movable seat. By adjusting the screw, the movable seat is moved laterally along the guide rail to adjust the machining position of the vent hole.

[0016] Preferably, a color mark sensor is provided on the film conveying path, and both the second drive and the color mark sensor are connected to the controller.

[0017] The controller sends commands to the second drive unit based on the color mark information collected on the film by the color mark sensor. This precisely controls the position of the vent hole, improving the quality of the vent bag. Attached Figure Description

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

[0019] Figure 2 This is a right-side view of the present invention.

[0020] Figure 3 This is a schematic diagram of the pore processing assembly of this utility model.

[0021] Figure 4 This is a schematic diagram showing the blade of this utility model away from the brush roller.

[0022] Figure 5 This is a schematic diagram of the blade of this utility model.

[0023] Figure 6 Schematic diagram of the thin film after processing for the vent holes Figure 1 .

[0024] Figure 7 Schematic diagram of the thin film after processing for the vent holes Figure 2 .

[0025] The attached figures are labeled as follows: 1. Frame; 2. Air hole processing group; 3. First motor; 4. Brush roller; 5. Guide rail; 6. Second motor; 7. Adjusting screw; 8. Crossbeam; 9. Slide; 10. Moving seat; 11. Needle roller; 12. Rotating shaft; 13. Pivot; 14. Swing block; 15. Color mark sensor; 16. Thin film; 17. Second transmission wheel; 18. Transmission belt; 19. First transmission wheel; 20. Fixed plate; 21. Isolation plate; 22. Turntable; 23. Blade; 24. Second through hole; 25. Connecting rod; 26. Eccentric wheel; 27. Clearance; 28. First through hole; 29. ​​Circular exhaust hole; 30. Linear exhaust hole. Detailed Implementation

[0026] The following describes the embodiments and related details and working principle of this utility model with reference to the accompanying drawings. This film 16-bag venting hole processing mechanism includes a frame 1, a brush roller 4, and a venting hole processing group 2. A crossbeam 8 is provided on the frame 1. The venting hole processing group 2 is slidably disposed on the crossbeam 8. The venting hole processing group 2 includes a movable seat 10, a swing block 14, and a rotating shaft 12. The movable seat 10 is slidably disposed on the crossbeam 8. The swing block 14 is oscillatingly disposed on the movable seat 10 via a pivot 13. The rotating shaft 12 is rotatably disposed on the swing block 14 and is connected to a first driving member that drives its rotation. A needle roller 11 or a blade 23 is mounted on the rotating shaft 12. The swing block 14 is connected to a second driving member that drives its swing. When processing venting holes in the film 16, the second driving member drives the swing block, causing the needle roller 11 or blade 23 on the rotating shaft 12 to press against the brush roller 4. The brush roller can be either an active roller or a passive roller. The film 16 passes between the two, forming venting holes on the film 16. In this invention, during the conveying process of the film 16, the film 16 passes through the needle roller 11 and brush roller 4 or the blade 23 and brush roller 4, and the film 16 is rolled by the needle roller 11 to form a circular exhaust hole 29, as shown in the attached figure. Figure 6 After being rolled by the blade 23, linear vent holes 30 are formed, as shown in the appendix. Figure 7 After the film 16 with vent holes forms a film bag, the gas inside the bag can be discharged through the vent holes.

[0027] The first driving component includes a first motor 3, a first transmission wheel 19, a second transmission wheel 17, and a transmission belt 18. The first transmission wheel 19 and the second transmission wheel 17 are respectively mounted on the output shaft and rotating shaft 12 of the first motor 3. The transmission belt 18 is mounted on the first transmission wheel 19 and the second transmission wheel 17. The output shaft of the first motor 3 is coaxially mounted with the pivot 13. The first motor 3 is mounted on the movable seat 10. When the swing block 14 swings, it causes the needle roller 11 or blade 23 on the rotating shaft 12 to press or separate from the brush roller 4, but the first motor 3 does not swing with the swing block 14, thus making the operation of the first motor 3 more stable. At the same time, the rotation of the rotating shaft 12 driven by the first motor 3 is not affected by the swing block 14, making the processing of the exhaust hole more stable. The second driving component includes a second motor 6, an eccentric wheel 26, and a connecting rod 25. The eccentric wheel 26 is connected to the output shaft of the second motor 6. One end of the connecting rod 25 is rotatably connected to the eccentric wheel 26, and the other end of the connecting rod 25 is rotatably connected to the swing block 14. The second motor 6 drives the eccentric wheel 26 to rotate. The eccentric wheel 26 pulls or pushes the swing block 14 to swing around the pivot 13 via the connecting rod 25. When the swing block 14 swings toward the brush roller 4, the needle roller 11 or blade 23 on the rotating shaft 12 presses against the brush roller 4. When the swing block 14 swings in the opposite direction, the needle roller 11 or blade 23 on the rotating shaft 12 moves away from the brush roller 4. The mechanical transmission is more stable and faster, making the processing of the exhaust hole more stable and precise.

[0028] The blades 23 are provided in a plurality of pieces and are evenly distributed on the outer circumference of the plate-shaped turntable 22. There is a gap 27 between adjacent blades 23, and the plurality of blades 23 form a circle. The turntable 22 has a central hole that matches the rotating shaft 12. The first motor 3 drives the rotating shaft 12 to rotate, and the turntable 22 rotates in opposition to the brush roller 4. The blades 23 on the turntable 22 form longitudinal, intermittent linear cutting edges on the film 16. (See attached image) Figure 3The turntables 22 are arranged in several groups, all sleeved on the rotating shaft 12. A partition plate 21 is provided between adjacent turntables 22, and the blades 23 on adjacent turntables 22 are staggered. That is, adjacent turntables 22 are respectively the first turntable and the second turntable. The blades 23 on the first turntable are axially opposite to the gap 27 on the second turntable, and similarly, the blades 23 on the second turntable are axially opposite to the gap 27 on the first turntable. Adjacent linear cutting edges formed on the film 16 are also staggered, and these linear cutting edges are linear exhaust holes 30. The turntables 22 are arranged laterally on the rotating shaft 12, enabling the formation of multiple transverse linear cutting edges on the film 16, and the staggered arrangement of adjacent linear cutting edges improves the flowability of the exhaust holes. A fixing plate 20 is mounted on the rotating shaft 12. The fixing plate 20 has locking holes, and locking bolts are fitted into the locking holes. The turntable 22 and the isolation plate 21 are respectively provided with a first through hole 28 and a second through hole 24 that are axially connected to the mounting holes. The locking bolts pass through the first through hole 28 and the second through hole 24 and are threadedly connected to the locking holes. This installation method is convenient, and the isolation plate 21 keeps the turntables 22 spaced apart, and keeps the linear cutting edges on the film 16 spaced apart, thus avoiding damage to the strength and firmness of the film 16 bags.

[0029] The crossbeam 8 is equipped with a guide rail 5 and an adjusting screw 7. The guide rail 5 is equipped with a slide block 9. The adjusting screw 7 is connected to a third motor and is threaded with a nut. The slide block 9 and the nut are mounted on the movable seat 10. The third motor drives the adjusting screw 7 to rotate, which causes the movable seat 10 to move laterally along the guide rail 5, thereby adjusting the lateral machining position of the exhaust hole.

[0030] To precisely control the processing position of the vent hole, a color mark sensor 15 is provided on the conveying path of the film 16. Both the second drive and the color mark sensor 15 are connected to the controller. The controller sends a command to the second drive based on the color mark information collected on the film 16 by the color mark sensor 15. The second drive drives the swing block 14 to swing around the pivot 13, so that the needle roller 11 or blade 23 on the rotating shaft 12 presses against the brush roller 4 or separates from the brush roller 4. This precisely controls the position of the vent hole and improves the quality of the vent bag.

Claims

1. A mechanism for processing vent holes in a thin film bag, characterized in that: Includes a frame, brush rollers, and a perforation processing unit; The frame is equipped with crossbeams; The air hole processing group is slidably mounted on the crossbeam. The air hole processing group includes a movable seat, a swing block and a rotating shaft. The movable seat is slidably mounted on the crossbeam. The swing block is pivotally mounted on the movable seat. The rotating shaft is rotatably mounted on the swing block and is connected to a first driving member that drives its rotation. A needle roller or a blade is mounted on the rotating shaft. The swing block is connected to a second driving member that drives its swing. When processing vent holes in a film, a needle roller or blade on a rotating shaft presses against a brush roller, and the film passes between them, forming vent holes on the film.

2. The film bag venting hole processing mechanism according to claim 1, characterized in that: The first driving component includes a first motor, a first transmission wheel, a second transmission wheel, and a transmission belt. The first transmission wheel and the second transmission wheel are respectively disposed on the output shaft and the rotating shaft of the first motor. The transmission belt is disposed on the first transmission wheel and the second transmission wheel. The output shaft of the first motor is coaxially disposed with the pivot. The first motor is mounted on a movable base.

3. The film bag venting hole processing mechanism according to claim 1, characterized in that: The second driving component includes a second motor, an eccentric wheel, and a connecting rod. The eccentric wheel is connected to the output shaft of the second motor, one end of the connecting rod is rotatably connected to the eccentric wheel, and the other end of the connecting rod is rotatably connected to the swing block.

4. The film bag venting hole processing mechanism according to claim 1, characterized in that: The blade has several blades evenly distributed on the outer circumference of the plate-shaped turntable, with gaps between adjacent blades, and the blades form a circle. The turntable has a central hole that matches the rotation shaft.

5. The film bag venting hole processing mechanism according to claim 4, characterized in that: The turntable is provided in several groups, all of which are sleeved on the rotating shaft. There is a partition plate between adjacent turntables, and the blades on adjacent turntables are staggered.

6. The film bag venting hole processing mechanism according to claim 5, characterized in that: A fixing plate is installed on the rotating shaft. The fixing plate has a locking hole and a locking bolt. The turntable and the isolation plate are respectively provided with a first through hole and a second through hole that are axially connected to the mounting hole. The locking bolt passes through the first through hole and the second through hole and is threadedly connected to the locking hole.

7. The film bag venting hole processing mechanism according to claim 1, characterized in that: The crossbeam is provided with a guide rail and an adjusting screw. The guide rail is provided with a slide block. The adjusting screw is threadedly connected with a nut. The slide block and the nut are mounted on a movable seat.

8. The film bag venting hole processing mechanism according to claim 1, characterized in that: A color mark sensor is installed on the film conveying path, and both the second drive and the color mark sensor are connected to the controller. The controller sends instructions to the second drive unit based on the color mark information collected on the film by the color mark sensor.

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