Tension adjusting assembly of film coating machine

Abstract

The utility model belongs to the technical field of film coating, and relates to a tension adjusting component of a film coating machine, which comprises an air expansion shaft arranged on the unreeling side of the coating machine, a left support frame and a right support frame which are used for supporting the air expansion shaft, an L-shaped mounting plate, a rubber belt and a connecting piece, the two ends of the air swelling shaft are rotationally connected to the left supporting frame and the right supporting frame through bearing seats correspondingly, an air swelling shaft driving mechanism is arranged on the outer side of the left supporting frame and is in transmission connection with the left end of the air swelling shaft, the L-shaped mounting plate comprises a transverse plate and a vertical plate, and the vertical plate is detachably connected to the inner side of the right supporting frame through bolts. The transverse plate is parallel to the axial direction of the air swelling shaft, the two connecting pieces are detachably connected to the transverse plate in an up-down corresponding mode, the right end of the air swelling shaft is sleeved with the middle of the rubber belt, and the two ends of the rubber belt are detachably connected with the two connecting pieces respectively. The pneumatic shaft tension adjusting device is simple in structure, low in manufacturing cost, convenient to operate and capable of flexibly adjusting local tension of the pneumatic shaft.

Description

Technical Field

[0001] This utility model belongs to the field of thin film coating technology, specifically, it relates to a tension adjustment component for a thin film coating machine. Background Technology

[0002] A film coating machine is a device used to uniformly coat various coatings onto the surface of materials, and it is widely used in many industrial fields. Its main function is to uniformly coat the coating onto a substrate, and then form a film through a curing or drying process to achieve a specific coating effect. The air shaft is a crucial component of the film coating machine used for winding and unwinding, and it is rotatably connected to the air shaft support frames at both ends of the coating machine. Its characteristic is that it uses compressed air to cause the clamps on the shaft surface to protrude, thereby fixing the paper tube or other tube. Tension control of the air shaft is very important in the operation of the coating machine, as it affects the uniformity of coating and the quality of the film. Excessive or insufficient tension will lead to uneven coating, film wrinkling, and other problems.

[0003] However, in existing technologies, such as the Chinese patent document with authorization announcement number CN210594535, the unwinding tension control device includes a translation control device, an air shaft, and a torque control device. The translation control device is installed at the left end of the air shaft to adjust its displacement; the torque control device is installed at the right end of the air shaft to adjust its torque. The translation control device can adjust the winding deviation of the raw material to prevent wrinkling of the base fabric; the torque control device can provide a constant tension for the coating machine, making it easy to control the amount of adhesive applied and improving product quality. However, the unwinding tension control device of this coating machine has a relatively complex structure and high manufacturing cost, making it unsuitable for workplaces requiring localized adjustment of the air shaft tension. Therefore, improvements are urgently needed. Utility Model Content

[0004] The purpose of this invention is to provide a tension adjustment component for a thin film coating machine to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tension adjustment assembly for a film coating machine includes an air shaft located on the unwinding side of the coating machine and left and right support frames for supporting the air shaft. It also includes an L-shaped mounting plate, a rubber belt, and connecting parts. The two ends of the air shaft are rotatably connected to the left and right support frames via bearing seats, respectively. An air shaft drive mechanism is located on the outer side of the left support frame and is drively connected to the left end of the air shaft. The L-shaped mounting plate includes a horizontal plate and a vertical plate. The vertical plate is detachably connected to the inner side of the right support frame via bolts. The horizontal plate is parallel to the axial direction of the air shaft. Two connecting parts are detachably connected to the horizontal plate, one above the other. The middle portion of the rubber belt is sleeved on the right end of the air shaft, and both ends of the rubber belt are detachably connected to the two connecting parts.

[0007] Preferably, the connector includes a connector head, one end of which has a rectangular groove that matches the rubber belt, and the other end is welded with a screw. The horizontal plate has a through hole that matches the screw. The screw passes through the through hole and is threaded with an adjusting nut. Connecting bolts are provided through the upper and lower side walls of the rectangular groove. The two ends of the rubber belt have through holes that match the connecting bolts. By rotating the adjusting nut, the distance between the connector head and the horizontal plate can be adjusted, thereby adjusting the tightness of the rubber belt.

[0008] Preferably, the air shaft drive mechanism includes a servo motor, a drive gear, and a driven gear. The servo motor is fixedly connected to the left support frame, the drive gear is coaxially fixedly connected to the output shaft of the servo motor, and the driven gear is coaxially fixedly connected to the left end of the air shaft. The drive gear and the driven gear mesh with each other to drive the air shaft to rotate.

[0009] Preferably, four rollers are respectively provided on the inner side of the left support frame and the right support frame. The four rollers on both sides are evenly distributed along the two shaft ends of the air expansion shaft, and the rollers are in rolling contact with the corresponding shaft ends. This arrangement is used to improve the stability of the air expansion shaft.

[0010] Preferably, the rubber belt is a wear-resistant rubber belt.

[0011] This invention also includes other devices or components that enable the tension adjustment assembly of the film coating machine to function properly, all of which are conventional technologies in the field. Furthermore, devices or components not specified in this invention, such as servo motors, air shafts, and coating machines, all employ existing technologies.

[0012] The working principle of this utility model is that, during use, the tension of the air expansion shaft can be easily adjusted by loosening and tightening the adjusting nut to adjust the traction force of the rubber belt on the air expansion shaft. When the rubber belt is worn, the connecting bolt can be loosened to achieve quick replacement of the rubber belt.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention has a simple structure, low manufacturing cost, and is easy to operate, and can flexibly adjust the local tension of the air shaft. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention in the embodiment.

[0017] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the diagram.

[0018] Figure 3 This is a schematic diagram of the connection structure of the L-shaped mounting plate, connector, and rubber strip in the embodiment.

[0019] In the diagram: 1-Air shaft, 2-Left support frame, 3-Right support frame, 4-Rubber belt, 5-Horizontal plate, 6-Vertical plate, 7-Bolt, 8-Connector, 9-Rectangular groove, 10-Screw, 11-Connecting bolt, 12-Servo motor, 13-Drive gear, 14-Driven gear, 15-Roller. Detailed Implementation

[0020] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0021] Example

[0022] like Figures 1-3 As shown, this utility model provides a tension adjustment assembly for a film coating machine, including an air shaft 1 located on the unwinding side of the coating machine and a left support frame 2 and a right support frame 3 for supporting the air shaft. It also includes an L-shaped mounting plate, a rubber belt 4, and connecting parts. The two ends of the air shaft are rotatably connected to the left support frame and the right support frame respectively through bearing seats (not shown in the figure). An air shaft drive mechanism is provided on the outer side of the left support frame. The air shaft drive mechanism is connected to the left end of the air shaft. The L-shaped mounting plate includes a horizontal plate 5 and a vertical plate 6. The vertical plate is detachably connected to the inner side of the right support frame by bolts 7. The horizontal plate is arranged parallel to the axial direction of the air shaft. Two connecting parts are detachably connected to the horizontal plate, one above the other. The middle part of the rubber belt is sleeved on the right end of the air shaft, and the two ends of the rubber belt are detachably connected to the two connecting parts respectively.

[0023] In this embodiment, the connector includes a connector 8. One end of the connector is provided with a rectangular groove 9 that matches the rubber belt, and the other end is welded with a screw 10. The horizontal plate is provided with a through hole that matches the screw. The screw passes through the through hole and is threadedly connected to an adjusting nut (not shown in the figure). Connecting bolts 11 are provided through the upper and lower side walls of the rectangular groove. Both ends of the rubber belt are provided with through holes that match the connecting bolts (not shown in the figure). By rotating the adjusting nut, the distance between the connector and the horizontal plate can be adjusted, thereby adjusting the tightness of the rubber belt.

[0024] Specifically, the air shaft drive mechanism includes a servo motor 12, a drive gear 13, and a driven gear 14. The servo motor is fixedly connected to the left support frame, the drive gear is coaxially fixedly connected to the output shaft of the servo motor, and the driven gear is coaxially fixedly connected to the left end of the air shaft. The drive gear and the driven gear mesh with each other to drive the air shaft to rotate.

[0025] More specifically, the inner sides of the left and right support frames are respectively provided with four rollers 15, and the four rollers on both sides are evenly distributed along the two shaft ends of the air expansion shaft, and the rollers are in rolling contact with the corresponding shaft ends. This arrangement is used to improve the stability of the air expansion shaft.

[0026] Continuing with the above embodiments, the rubber belt is a wear-resistant rubber belt to extend the service life of the device.

[0027] The working principle of this utility model is that, during use, the tension of the air expansion shaft can be easily adjusted by loosening and tightening the adjusting nut to adjust the traction force of the rubber belt on the air expansion shaft. When the rubber belt is worn, the connecting bolt can be loosened to achieve quick replacement of the rubber belt.

[0028] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A tension adjustment assembly for a film coating machine, comprising an air shaft disposed on the unwinding side of the coating machine and a left support frame and a right support frame for supporting the air shaft, wherein both ends of the air shaft are rotatably connected to the left support frame and the right support frame respectively via bearing seats, and an air shaft drive mechanism is provided on the outer side of the left support frame, the air shaft drive mechanism being drively connected to the left end of the air shaft, characterized in that: It also includes an L-shaped mounting plate, a rubber band, and connectors. The L-shaped mounting plate includes a horizontal plate and a vertical plate. The vertical plate is detachably connected to the inside of the right support frame by bolts. The horizontal plate is arranged parallel to the axial direction of the air shaft. Two connectors are detachably connected to the horizontal plate, one above the other. The middle part of the rubber band is sleeved on the right end of the air shaft, and both ends of the rubber band are detachably connected to the two connectors respectively.

2. The tension adjustment assembly for a thin film coating machine according to claim 1, characterized in that: The connector includes a connector head, one end of which has a rectangular groove that matches the rubber band, and the other end is welded with a screw. The horizontal plate has a through hole that matches the screw. The screw passes through the through hole and is threaded with an adjusting nut. Connecting bolts are provided through the upper and lower side walls of the rectangular groove. The two ends of the rubber band have through holes that match the connecting bolts.

3. The tension adjustment assembly for a thin film coating machine according to claim 1, characterized in that: The air shaft drive mechanism includes a servo motor, a drive gear, and a driven gear. The servo motor is fixedly connected to the left support frame. The drive gear is coaxially fixedly connected to the output shaft of the servo motor. The driven gear is coaxially fixedly connected to the left end of the air shaft. The drive gear and the driven gear are meshed together.

4. The tension adjustment assembly for a thin film coating machine according to claim 1, characterized in that: The inner sides of the left and right support frames are respectively provided with four rollers, and the four rollers on both sides are evenly distributed along the two ends of the air expansion shaft, and the rollers are in rolling contact with the corresponding shaft ends.

5. A tension adjustment assembly for a thin film coating machine according to any one of claims 1 to 4, characterized in that: The rubber belt is a wear-resistant rubber belt.

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