Material belt tension control module and material belt transmission system

Abstract

The utility model relates to a material belt tension control module and a material belt transmission system, the tension control module comprises a tension roller, a driving unit, a swing arm and a balancing weight, the driving unit is provided with a rotatable constant torque power output shaft, the swing arm is fixedly arranged on the power output shaft of the driving unit, and the balancing weight is arranged on the swing arm. The tension roller and the balancing weight are installed at the two ends of the swing arm respectively. The material belt conveying system comprises a supporting plate, an unwinding mechanism, a plurality of idler wheels, the material belt tension control module, an encoder and a control unit, the supporting plate is vertically arranged, driving units of the unwinding mechanism, the idler wheels and the tension control module are all installed on the supporting plate, and the swing arm is horizontally arranged. And the tension roller is parallelly positioned above the position between the two rollers which are adjacently arranged left and right. The tension roller of the material belt tension control module and the material belt transmission system can apply constant tension to the material belt, and can output small tension.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet material transmission, in particular to a material belt tension control module and a material belt transmission system. Background Art

[0002] Thin sheet materials such as adhesive tape and printed materials often require tension adjustment during transport. Existing technologies typically use springs or pneumatic cylinders to push or pull rollers to generate tension. However, spring tension is not adjustable, and pneumatic cylinder pistons have resistance. When the tension is very low (e.g., just a few Newtons or even a fraction of a Newton), the cylinder is unable to generate such low tension due to resistance. Utility Model Content

[0003] In view of this, the technical problem to be solved by the present invention is to provide a material strip tension control module and a material strip transmission system that can output relatively low tension.

[0004] In order to solve the above technical problems, an embodiment of the utility model provides a material strip tension control module, including a tension roller, a driving unit for driving the tension roller to swing, a swing arm and a counterweight block, the driving unit has a rotatable constant torque power output shaft, the swing arm is fixedly installed on the power output shaft of the driving unit, and the tension roller and the counterweight block are respectively installed at both ends of the swing arm.

[0005] Furthermore, the swing arm is perpendicular to the power output shaft of the driving unit, and the axial direction of the tension roller is perpendicular to the swing arm and parallel to the power output shaft of the driving unit.

[0006] Furthermore, one end of the swing arm has a swing arm rod, the swing arm rod extends along the length direction of the swing arm, and the counterweight block is sleeved on the swing arm rod.

[0007] Furthermore, the counterweight is fixed to the swing arm by screws.

[0008] Furthermore, the driving unit is a motor, and the rotating shaft of the motor is connected to the swing arm.

[0009] Furthermore, the driving unit includes a motor and a reducer, the rotating shaft of the motor is connected to the reducer, and the rotating shaft of the reducer is connected to the swing arm.

[0010] Furthermore, the tension roller includes a roller, a roller shaft and two bearings, the two bearings are respectively sleeved on both ends of the roller shaft, and the roller is sleeved on the two bearings.

[0011] Furthermore, the tension roller also includes a spacer sleeve and a shaft ring, the spacer sleeve is installed on the free end of the roller shaft and is stopped on the outside of the two bearings, the shaft ring is sleeved on the roller shaft and clamped between the two bearings, and the roller sleeve is arranged on the outer periphery of the shaft ring.

[0012] The present utility model also provides a material tape transmission system, including a support plate, a reeling mechanism for winding the material tape, a plurality of rollers, the above-mentioned material tape tension control module, an encoder for detecting whether the driving unit is operating, and a control unit for controlling the rotation speed of the reeling mechanism according to the feedback signal of the encoder. The support plate is vertically arranged, the reeling mechanism, the plurality of rollers and the driving unit of the tension control module are all installed on the support plate, the swing arm is horizontally arranged, and the tension roller is located parallel and above between two rollers adjacent to each other on the left and right.

[0013] Furthermore, the encoder is located in the driving unit.

[0014] Compared with the existing technology, the material strip tension control module and material strip transmission system of the present invention install a swing arm, a tension roller and a counterweight on the drive unit. The counterweight can balance the tension roller, eliminating the influence of the tension roller on the output torque accuracy of the drive unit. The drive unit outputs a constant torque, which is transmitted to the tension roller through the swing arm, so that the tension roller applies constant tension to the material strip and can output a smaller tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the material belt tension control module of the present invention.

[0017] Figure 2 It is a three-dimensional schematic diagram of a preferred embodiment of the material belt transmission system of the present invention. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments in the embodiments of the present invention, all other embodiments obtained by those skilled in the art should fall within the scope of protection of the embodiments of the present invention.

[0019] See also Figure 1 , is a preferred embodiment of the material strip tension control module in the present invention. The material strip tension control module includes a tension roller 1, a swing arm 2, a counterweight 3 and a drive unit 4. The drive unit 4 is used to drive the tension roller 1 to swing, and it has a rotatable constant torque power output shaft (not shown in the figure). In this embodiment, the drive unit 4 is a motor, and its rotating shaft (that is, the power output shaft of the drive unit 4) is connected to the swing arm 2. The swing arm 2 is fixedly mounted on the power output shaft of the drive unit 4, and the tension roller 1 and the counterweight 3 are respectively mounted at both ends of the swing arm 2. The motor drives the swing arm 2 to rotate, thereby causing the tension roller 1 to swing with the swing arm 2.

[0020] In this embodiment, the swing arm 2 is perpendicular to the power output shaft of the drive unit 4, and the axial direction of the tension roller 1 is perpendicular to the swing arm 2 and parallel to the power output shaft of the drive unit 4. One end of the swing arm 2 has a swing arm rod 5, which extends along the length of the swing arm 2. The counterweight 3 is mounted on the swing arm rod 21 and secured to the swing arm rod 5 by screws 6. The tension roller 1 includes a roller 11, a roller shaft 12, and two bearings 13. The two bearings 13 are mounted on both ends of the roller shaft 12, and the roller 11 is mounted on the two bearings 13. The tension roller 1 also includes a spacer 14 and a collar (not shown). The spacer 14 is mounted on the free end of the roller shaft 12 and stops on the outside of the adjacent bearings 13. The collar is mounted on the roller shaft 12 and sandwiched between the two bearings 13. The roller 11 is mounted on the outer periphery of the collar. The spacer 14 and the collar cooperate to secure the bearings 13.

[0021] Please also read Figure 2, a preferred embodiment of the web conveying system of the present invention, comprises a support plate 100, an unwinding mechanism 200, several rollers 300, the aforementioned tension control module, an encoder (not shown), and a control unit (not shown). The unwinding mechanism 200 is used to wind the web 400 and unwind it at a predetermined speed. In this embodiment, the unwinding mechanism 200 is a servo unwinding mechanism driven by a servo motor. The encoder, located within the drive unit 4 of the tension control module, detects whether the drive unit 4 is operating. The control unit controls the rotational speed of the unwinding mechanism 200 based on feedback from the encoder. The support plate 100 is vertically mounted, with the unwinding mechanism 200, several rollers 300, and tension control module all mounted on it. The swing arm 2 is horizontally positioned, with the tension roller 1 positioned parallel to and above two adjacent rollers 300. During operation, the web 400 sequentially winds around each roller 300 and the tension roller 1.

[0022] When the above-described web conveyor system is in operation, the web 400 is unwound by the unwinding mechanism 200. After reversing around the roller 300, it winds around the tension roller 1 of the tension control module, which applies tension to the web 400, tightening it (the tension can be set to a different value based on specific requirements). If the unwinding mechanism 200 unwinds too slowly, the web tension increases, pressing down on the tension roller 1. This, in turn, drives the motor via the swing arm 2. When the encoder detects motor rotation, it sends a signal back to the control unit, which instructs the unwinding mechanism 200 to speed up the unwinding. Afterward, the tension roller 1 automatically resets. If the unwinding mechanism unwinds too quickly, the tension roller 1, under the action of a constant torque, moves upward, driving the motor via the swing arm 2. When the encoder detects motor rotation, it sends a signal back to the control unit, which instructs the control program to slow the unwinding mechanism 200 down, after which the tension roller 1 automatically resets.

[0023] The tension level of the tension control module can be adjusted based on actual usage requirements. If greater tension is required, the drive unit 4 can also include a motor and a reducer, with the motor's shaft connected to the reducer, and the reducer's shaft (i.e., the power output shaft of the drive unit 4) connected to the swing arm 2. Of course, increasing the tension can also be achieved by enlarging the motor.

[0024] The material strip tension control module and material strip transmission system of the present invention are achieved by installing a swing arm 2, a tension roller 1 and a counterweight 3 on the drive unit 4. The counterweight 3 can balance the tension roller 1, eliminating the influence of the tension roller 1 on the output torque accuracy of the drive unit 4. The drive unit 4 outputs a constant torque, which is transmitted to the tension roller 1 through the swing arm 2, so that the tension roller 1 applies constant tension to the material strip 400 and can output a smaller tension.

[0025] The above embodiments are only preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be regarded as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A strip tension control module, comprising a tension roller and a drive unit for driving the tension roller to swing, characterized in that: The tension control module also includes a swing arm and a counterweight. The drive unit has a rotatable constant torque power output shaft. The swing arm is fixedly mounted on the power output shaft of the drive unit. The tension roller and the counterweight are respectively mounted at both ends of the swing arm.

2. The strip tension control module according to claim 1, wherein: The swing arm is perpendicular to the power output shaft of the driving unit, and the axial direction of the tension roller is perpendicular to the swing arm and parallel to the power output shaft of the driving unit.

3. The strip tension control module according to claim 1, wherein: One end of the swing arm is provided with a swing arm rod, the swing arm rod extends along the length direction of the swing arm, and the counterweight block is sleeved on the swing arm rod.

4. The strip tension control module according to claim 3, wherein: The counterweight block is fixed on the swing arm by screws.

5. The strip tension control module according to claim 1, wherein: The driving unit is a motor, and the rotating shaft of the motor is connected to the swing arm.

6. The strip tension control module according to claim 1, wherein: The driving unit includes a motor and a reducer, the rotating shaft of the motor is connected to the reducer, and the rotating shaft of the reducer is connected to the swing arm.

7. The strip tension control module according to claim 1, wherein: The tension roller includes a roller, a roller shaft and two bearings. The two bearings are respectively sleeved on both ends of the roller shaft, and the roller is sleeved on the two bearings.

8. The strip tension control module according to claim 7, wherein: The tension roller also includes a spacer and a collar. The spacer is installed on the free end of the roller shaft and is stopped on the outside of the two bearings. The collar is sleeved on the roller shaft and clamped between the two bearings. The roller is sleeved on the outer periphery of the collar.

9. A tape conveying system comprising a support plate, a reeling mechanism for winding the tape, and a plurality of rollers, wherein the support plate is vertically arranged, the reeling mechanism and the plurality of rollers are mounted on the support plate, and characterized in that: The transmission system also includes a material strip tension control module as described in any one of claims 1 to 8, an encoder for detecting whether the driving unit is operating, and a control unit for controlling the rotation speed of the unwinding mechanism according to the feedback signal of the encoder. The driving unit of the tension control module is mounted on the support plate, the swing arm is horizontally arranged, and the tension roller is located parallel and above two adjacent rollers on the left and right.

10. The tape transmission system according to claim 9, wherein: The encoder is located in the drive unit.

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