Bag twisting mechanism of bag making machine

Abstract

The utility model relates to a bag twisting mechanism of a bag making machine, which comprises a left wall plate, a right wall plate, a rubber roller seat erected above the left wall plate and the right wall plate, an upper rubber roller and a lower rubber roller which are arranged on the rubber roller seat, and an eccentric driving mechanism used for driving the upper rubber roller to be close to or far away from the lower rubber roller, the upper rubber roller and the lower rubber roller are arranged on the left wall plate and the right wall plate respectively, a bag passing gap allowing a bag body to pass is formed between the upper rubber roller and the lower rubber roller, the deflection center shaft is rotationally connected between the left wall plate and the right wall plate, one end of the lifting swing arm is fixed to the deflection center shaft, the other end of the lifting swing arm is connected with an eccentric driving mechanism, and the two ends of the upper rubber roller are rotationally connected with the lifting swing arm. The design of a guide block, a guide groove, a swing arm positioning block and a swing arm is abandoned, and the design of the deflection center shaft and the lifting swing arm is adopted, so that the structure required by the up-and-down lifting action of the gluing roller is greatly simplified, the processing difficulty and the manufacturing cost of equipment are reduced, and meanwhile, the assembling efficiency and the working stability of the equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a bag rubbing mechanism of a bag making machine. Background Art

[0002] The roll-to-roll bag making machine is a mechanical device used to make various plastic packaging bags or other material packaging bags. It is widely used in the packaging industry. In the work process of the roll-to-roll bag making machine, the bag rubbing mechanism plays an important role. It is responsible for rubbing the continuously conveyed bag body open for subsequent packaging operations. The bag rubbing mechanism usually includes two upper and lower rubber rollers that are arranged up and down and have a relative rotation function. Among them, the upper rubber roller needs to be able to achieve an up and down lifting action to adjust the distance between it and the lower rubber roller, so as to ensure the rubbing effect of the bag body.

[0003] In our previous products, the upper glue roller is lifted and lowered by the eccentric wheel assembly (equivalent to the eccentric drive mechanism of this application) through the guide block, guide groove, swing arm positioning block and swing arm and other components (for example, a bag rubbing mechanism of a continuous roll bag making machine disclosed in Chinese utility model patent application CN2021211134575). Although this structure can complete the intended function, there are some problems in practical applications:

[0004] 1. Difficulty in processing: Complex guide grooves need to be processed on the guide seat, which not only increases the manufacturing difficulty but also increases the processing cost.

[0005] 2. Complex assembly: The structure involves multiple parts that work together, making the assembly of the equipment complicated and time-consuming.

[0006] 3. Poor stability: Due to the large number of components and complex structure, components are prone to wear and tear, and the matching relationship between components is strict, which affects the overall stability and service life of the equipment.

[0007] Therefore, it is necessary to design a bag rubbing mechanism with simpler structure, lower cost and better working stability to overcome the problems existing in the prior art. Utility Model Content

[0008] In view of the deficiencies in the background technology, the utility model provides a bag rubbing mechanism for a bag making machine.

[0009] The technical scheme adopted by the utility model is: a bag rubbing mechanism of a bag making machine, comprising a left wall panel, a right wall panel, a rubber roller seat mounted above the left wall panel and the right wall panel, an upper rubber roller and a lower rubber roller arranged on the rubber roller seat, and an eccentric driving mechanism for driving the upper rubber roller to move closer to or away from the lower rubber roller, the two ends of the lower rubber roller are rotatably connected to the rubber roller seat, a bag passing gap for the bag body to pass through is formed between the upper rubber roller and the lower rubber roller, and also comprises a sway center axis rotatably connected between the left wall panel and the right wall panel and a lifting swing arm with one end fixed on the sway center axis, the other end of the lifting swing arm is connected to the eccentric driving mechanism, and the two ends of the upper rubber roller are rotatably connected to the lifting swing arm.

[0010] Furthermore, an axial hole for the yaw center axis to pass through is provided on one end of the lifting swing arm, and slots are provided on the lifting swing arm at both ends of the axial hole, one end of the slot extends to the end of the lifting swing arm, and a fixing screw hole is provided on the lifting swing arm on the side of the axial hole.

[0011] Furthermore, spacers are provided on the swing center axes on both sides of the lifting swing arm.

[0012] Furthermore, a lower beam is fixed on the left wall panel and the right wall panel, a lower pressure plate is fixed on the lower beam through a pad, an upper beam is fixed on the lifting swing arm, the upper beam is connected to the upper pressure plate through a screw, a compression spring is sleeved on the screw between the upper pressure plate and the upper beam, and a tightening nut is threadedly connected to the screw above the upper beam.

[0013] Furthermore, the eccentric driving mechanism includes a driving motor fixed on the left wall panel, an eccentric wheel connected to the output end of the driving motor, a bearing connecting rod rotatably connected to the eccentric wheel, an outer swing arm rotatably connected to the bearing connecting rod, a transmission shaft fixedly connected to the outer swing arm, an inner swing arm fixedly connected to the transmission shaft, a lower rotating connecting shaft rotatably connected to the inner swing arm, an upper rotating connecting shaft rotatably connected to the lifting swing arm, and a connecting rod connected to the lower rotating connecting shaft, and the connecting rod is connected to the above-mentioned upper rotating connecting shaft.

[0014] Furthermore, the screw structure of the connecting rod, the upper rotating connecting shaft and the lower rotating connecting shaft both include a rotating shaft and a screw block on the end of the rotating shaft, the connecting rod is threadedly connected to the screw hole of the screw block, and an operating handwheel is provided on the top of the connecting rod.

[0015] Furthermore, the driving motor is fixed on the inner side wall of the left wall panel, and the eccentric wheel is arranged on the outer side wall of the left wall panel.

[0016] The beneficial effects of the utility model are:

[0017] 1. Simplified structure: By adopting the design of eccentric swing center axis and lifting swing arm, the original complex structures such as guide block, guide groove, swing arm positioning block and swing arm are replaced, which greatly simplifies the overall structure of the bag rubbing mechanism and reduces the number of parts.

[0018] 2. Reduce processing costs: Since it is no longer necessary to process complex guide grooves on the guide seat, the need for precision processing is reduced, thereby reducing manufacturing costs.

[0019] 3. Improve assembly efficiency: The simplified structure reduces the number of parts that cooperate with each other, making the assembly of the equipment simpler and faster, reducing assembly costs and improving assembly efficiency.

[0020] 4. Enhanced working stability: The simplified structure reduces the friction and interference between moving parts, simplifies the matching relationship, and improves the working stability and reliability of the bag rubbing mechanism.

[0021] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the other side of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the eccentric drive mechanism.

[0026] Figure 4 It is a schematic diagram of the structure of the rubber roller seat.

[0027] Figure 5 It is a structural schematic diagram of the lifting swing arm.

[0028] Figure 6 It is a schematic diagram of the structure of the lower rotating connecting shaft or the upper rotating connecting shaft.

[0029] Figure 1-6Middle: 1. Left wall panel; 2. Right wall panel; 3. Rubber roller seat; 4. Upper rubber roller; 5. Lower rubber roller; 6. Oscillating center axis; 7. Lifting swing arm; 8. Axis hole; 9. Slot; 10. Fixing screw hole; 11. Spacer; 12. Lower beam; 13. Pad; 14. Lower pressure plate; 15. Upper beam; 16. Screw; 17. Upper pressure plate; 18. Compression spring; 19. Loose nut; 20. Driving motor; 21. Eccentric wheel; 22. Bearing connecting rod; 23. Outer swing arm; 24. Transmission shaft; 25. Inner swing arm; 26. Lower rotating connecting shaft; 27. Upper rotating connecting shaft; 28. Connecting rod; 29. ​​Rotating shaft; 30. Screw block; 31. Operating hand wheel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] The utility model provides a bag rubbing mechanism of a bag making machine.

[0033] In this embodiment, refer to Figure 1-6 The bag rubbing mechanism of the bag making machine includes a left wall panel 1, a right wall panel 2, a rubber roller seat 3 mounted above the left wall panel and the right wall panel, an upper rubber roller 4 and a lower rubber roller 5 arranged on the rubber roller seat, and an eccentric driving mechanism for driving the upper rubber roller to move closer to or away from the lower rubber roller, the two ends of the lower rubber roller are rotatably connected to the rubber roller seat, and a bag passing gap for the bag body to pass through is formed between the upper rubber roller and the lower rubber roller. It also includes a sway center shaft 6 rotatably connected between the left wall panel and the right wall panel and a lifting swing arm 7 with one end fixed on the sway center shaft, the other end of the lifting swing arm is connected to the eccentric driving mechanism, and the two ends of the upper rubber roller are rotatably connected to the lifting swing arm.

[0034] In this embodiment, by abandoning the design of guide blocks, guide grooves, swing arm positioning blocks and swing arms, and adopting the design of eccentric swing center axis and lifting swing arm, the structure required for the up and down lifting action of the glue roller is greatly simplified, the processing difficulty and production cost of the equipment are reduced, and at the same time the assembly efficiency and working stability of the equipment are improved.

[0035] Specifically, an axial hole 8 for the yaw center axis to pass through is provided on one end of the lifting swing arm, and slots 9 are provided on the lifting swing arm at both ends of the axial hole, one end of the slot extends to the end of the lifting swing arm, and a fixing screw hole 10 is provided on the lifting swing arm on the side of the axial hole.

[0036] In this embodiment, the yaw center shaft is passed through the shaft hole on one end of the lifting swing arm, and then the lifting swing arm is fixed to the yaw center shaft by fixing a bolt on the fixing screw hole. The slot setting can fine-tune the size of the shaft hole to facilitate the passing of the yaw center shaft.

[0037] Specifically, spacers 11 are provided on the swing center axes on both sides of the lifting swing arm.

[0038] In this embodiment, the installation of the spacer ring is used to limit the installation position of the lifting swing arm.

[0039] Specifically, a lower beam 12 is fixed on the left wall panel and the right wall panel, a lower pressure plate 14 is fixed on the lower beam through a pad 13, an upper beam 15 is fixed on the lifting swing arm, the upper beam is connected to an upper pressure plate 17 through a screw 16, a compression spring 18 is sleeved on the screw between the upper pressure plate and the upper beam, and a locking nut 19 is threadedly connected to the screw above the upper beam.

[0040] During specific use, the bag body passes through the gap between the upper pressure plate and the lower pressure plate. After adopting the above structure, the gap size between the upper pressure plate and the lower pressure plate can be adjusted by rotating the loose nut, and the pressure between the upper pressure plate and the lower pressure plate can be adjusted to meet different working conditions.

[0041] Specifically, the eccentric driving mechanism includes a driving motor 20 fixed on the left wall panel, an eccentric wheel 21 connected to the output end of the driving motor, a bearing connecting rod 22 rotatably connected to the eccentric wheel, an outer swing arm 23 rotatably connected to the bearing connecting rod, a transmission shaft 24 fixedly connected to the outer swing arm, an inner swing arm 25 fixedly connected to the transmission shaft, a lower rotating connecting shaft 26 rotatably connected to the inner swing arm, an upper rotating connecting shaft 27 rotatably connected to the lifting swing arm, and a connecting rod 28 connected to the lower rotating connecting shaft, and the connecting rod is connected to the above-mentioned upper rotating connecting shaft.

[0042] The working principle of the eccentric drive mechanism: the driving motor drives the eccentric wheel to rotate, and the eccentric wheel drives the transmission shaft to rotate and swing left and right through the bearing connecting rod and the outer swing arm, and then drives the connecting rod up and down through the inner swing arm and the lower rotating connecting shaft, and finally drives the lifting swing arm connected to the connecting rod to swing up and down under the up and down movement of the connecting rod.

[0043] Specifically, the screw structure of the connecting rod, the upper rotating connecting shaft and the lower rotating connecting shaft both include a rotating shaft 29 and a screw block 30 on the end of the rotating shaft, the connecting rod is threadedly connected to the screw hole of the screw block, and an operating hand wheel 31 is provided on the top of the connecting rod.

[0044] In this embodiment, the connecting rod adopts a screw structure and is threadedly connected with the screw blocks of the upper rotating connecting shaft and the lower rotating connecting shaft. Therefore, the spacing between the upper rotating connecting shaft and the lower rotating connecting shaft can be adjusted by rotating the screw, and the amplitude of the up and down swing of the lifting swing arm can be indirectly adjusted, and the amplitude of the up and down movement of the upper rubber roller can be adjusted from time to time to adapt to different working conditions, thereby improving the flexibility and adaptability of the equipment. In addition, an operating hand wheel is provided at the top of the connecting rod, which is convenient for manual operation of rotating the connecting rod using the operating hand wheel.

[0045] Specifically, the driving motor is fixed on the inner side wall of the left wall panel, and the eccentric wheel is arranged on the outer side wall of the left wall panel.

[0046] Placing the eccentric wheel outside facilitates the installation and maintenance of the eccentric wheel.

[0047] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. A bag rubbing mechanism of a bag making machine, comprising a left wall panel, a right wall panel, a rubber roller seat mounted above the left wall panel and the right wall panel, an upper rubber roller and a lower rubber roller arranged on the rubber roller seat, and an eccentric driving mechanism for driving the upper rubber roller to move closer to or away from the lower rubber roller, the two ends of the lower rubber roller are rotatably connected to the rubber roller seat, and a bag passing gap is formed between the upper rubber roller and the lower rubber roller for the bag body to pass through, characterized in that: It also includes a sway center shaft rotatably connected between the left wall panel and the right wall panel and a lifting swing arm with one end fixed on the sway center shaft, the other end of the lifting swing arm is connected to the eccentric driving mechanism, and the two ends of the glue roller are rotatably connected to the lifting swing arm.

2. The bag rubbing mechanism of the bag making machine according to claim 1, characterized in that: An axial hole for the yaw center axis to pass through is provided on one end of the lifting swing arm, and slots are provided on the lifting swing arms at both ends of the axial hole, one end of the slot extends to the end of the lifting swing arm, and a fixing screw hole is provided on the lifting swing arm on the side of the axial hole.

3. The bag rubbing mechanism of the bag making machine according to claim 2, characterized in that: Spacers are arranged on the deflection center shafts on both sides of the lifting swing arm.

4. The bag rubbing mechanism of the bag making machine according to claim 1, characterized in that: A lower beam is fixed on the left wall panel and the right wall panel, a lower pressure plate is fixed on the lower beam via a pad, an upper beam is fixed on the lifting swing arm, the upper beam is connected to the upper pressure plate via a screw rod, a compression spring is sleeved on the screw rod between the upper pressure plate and the upper beam, and a loose nut is threadedly connected to the screw rod above the upper beam.

5. The bag rubbing mechanism of the bag making machine according to claim 1, characterized in that: The eccentric driving mechanism includes a driving motor fixed on the left wall panel, an eccentric wheel connected to the output end of the driving motor, a bearing connecting rod rotatably connected to the eccentric wheel, an outer swing arm rotatably connected to the bearing connecting rod, a transmission shaft fixedly connected to the outer swing arm, an inner swing arm fixedly connected to the transmission shaft, a lower rotating connecting shaft rotatably connected to the inner swing arm, an upper rotating connecting shaft rotatably connected to the lifting swing arm, and a connecting rod connected to the lower rotating connecting shaft, wherein the connecting rod is connected to the above-mentioned upper rotating connecting shaft.

6. The bag rubbing mechanism of the bag making machine according to claim 5, characterized in that: The screw structure of the connecting rod, the upper rotating connecting shaft and the lower rotating connecting shaft both include a rotating shaft and a screw block on the end of the rotating shaft, the connecting rod is threadedly connected to the screw hole of the screw block, and an operating hand wheel is provided on the top of the connecting rod.

7. The bag rubbing mechanism of the bag making machine according to claim 5, characterized in that: The driving motor is fixed on the inner side wall of the left wall panel, and the eccentric wheel is arranged on the outer side wall of the left wall panel.

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