Shaftless cloth feeding tension control device
By designing a shaftless cloth tension control device in the glueing machine, the tension of the fiberglass is automatically detected and adjusted, the abnormal problems caused by changes in the tension of the fiberglass in the prior art are solved, and material loss is reduced and production costs are achieved. The reduction.
Patent Information
- Application Number
- CN202323620228.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-28
AI Technical Summary
After a long period of operation of the existing glue machine, the tension changes of the glass fiber cloth lead to problems such as weft slant, narrow curl, wrinkle, slip, etc., resulting in high material loss and high production costs.
A shaftless tension control device is designed, including a bracket, an input roller, a swing rod, a floating roller, a counterweight roller, a position detection element, a position adjustment device, an output roller and a control system. By detecting the displacement of the floating roller, adjusting the position of the floating roller, and automatically controlling the tension of the fabric.
Effectively prevent wrinkles, slips or weft tilts when rolling the tail of the glass fiber cloth, reduce material losses, and reduce production costs.
Smart Images
Figure CN222454005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a glass fiber cloth gluing device, in particular to a shaftless cloth gluing tension control device. Background Art
[0002] The glue machine is a key equipment for manufacturing copper clad laminates. The prepregs used for copper clad laminates and multilayer circuit boards are produced by the glue machine. The existing glue machine adopts a shaftless torque control system, such as Figure 1 As shown, the glass fiber cloth 300 is sequentially conveyed forward by a plurality of rollers 402 arranged on a bracket 401. However, after a period of operation, the material radius of the roll drum of the existing gluing machine conveying system becomes smaller and smaller. Therefore, the speed at which the glass cloth is released from the roll drum will increase, and the tension of the glass cloth will change. The change in tension will cause a series of abnormal problems such as weft skew, narrow width at the end of the roll, wrinkling, and slipping of the glass cloth. According to past experience, the average monthly loss of glass cloth is 1,700 meters, and the average glass cloth is about 10 yuan / meter. The average monthly loss cost increases by 17,000 yuan. The large material loss leads to high production costs. Utility Model Content
[0003] The utility model aims to provide a shaftless cloth tension control device, which can automatically detect and control the tension of the cloth during transportation, prevent the glass fiber cloth from wrinkling, slipping or weft skew when it is rolled up, reduce material loss and reduce production costs.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a shaftless cloth tension control device including a bracket, an input roller, a swing rod, a floating roller, a first counterweight roller, a position detection element, a position adjustment device, an output roller and a control system, wherein the middle portion of the swing rod is rotatably arranged on the bracket through a pivot shaft, the first counterweight roller is arranged at one end of the swing rod, and the floating roller is arranged at the end of the swing rod away from the first counterweight roller, so that the cloth can be wound around the input roller, the floating roller and the output roller in sequence; the position detection element is electrically connected to the control system and is used to detect the displacement of the floating roller; the position adjustment device is arranged on the bracket and electrically connected to the control system; the output end of the position adjustment device is connected to the swing rod, and can drive the floating roller to move to adjust the tension of the cloth.
[0005] Compared with the prior art, the utility model provides a swing arm rotatably disposed on a bracket, and a floating roller is disposed at one end of the swing arm, and a first counterweight roller is disposed at the other end of the swing arm, so that the cloth can be sequentially wound around the input roller, the floating roller and the output roller for transportation. The change in the cloth tension can cause the swing arm to drive the floating roller to swing within a certain angle range. Therefore, by arranging a position detection element, when the cloth tension changes and drives the floating roller to move, the position detection element can be used to detect the displacement of the floating roller, so that an electrical signal is sent to the control system through the position detection element, and then the control system controls the action of the position adjustment device to readjust the position of the floating roller, thereby achieving the purpose of adjusting the cloth tension. This effectively prevents the occurrence of problems such as wrinkling, slipping or weft skew when the glass fiber cloth is rolled up, reduces material loss, and thus reduces production costs.
[0006] Preferably, the position detection element is an angle detection element for detecting the rotation angle of the pivot shaft or a displacement detection element for detecting the moving position of the floating roller. By setting the angle detection element or the displacement detection element, the displacement of the floating roller can be detected quickly and accurately, so that it can be fed back to the control system in time, thereby improving the sensitivity and accuracy of tension adjustment.
[0007] Preferably, the first counterweight roller is movably arranged on the swing rod to adjust its torque on the swing rod. By using the first counterweight roller, the torque of the floating roller to the swing rod can be effectively balanced, so that the resistance of the position adjustment device is smaller, so that the adjustment is more precise.
[0008] Specifically, the shaftless upper cloth tension control device further includes a second counterweight roller, and the second counterweight roller is fixedly arranged at one end of the swing rod away from the floating roller.
[0009] Preferably, the output end of the position adjustment device is connected to the swing rod and the connection point is located between the pivot shaft and the floating roller.
[0010] Preferably, the position adjustment device comprises a cylinder, an electric control converter and an air circuit system, wherein the cylinder is arranged on the bracket and the telescopic end is connected to the swing rod, the electric control converter is electrically connected to the control system and the air circuit system respectively, and the air circuit system is connected to the cylinder to control the extension and retraction of the cylinder. By arranging the electric control converter and the air circuit system, the electrical signal of the position detection element can be converted into a pneumatic signal, thereby realizing the driving of the cylinder, so that the cylinder can accurately extend and retract to adjust the position of the floating roller, thereby realizing the adjustment of the tension.
[0011] Preferably, the horizontal heights of the input roller and the output roller are greater than the horizontal height of the floating roller, so that the wrap angle of the floating roller can be larger, ensuring that the tension change of the cloth can be accurately reflected on the floating roller, thereby improving the sensitivity of detection.
[0012] Preferably, the wrapping angle range of the cloth wrapping the floating roller is greater than 90 degrees.
[0013] Preferably, the shaftless upper cloth tension control device further comprises a tension detection roller, and the tension detection roller is arranged on the bracket and located before the input roller to detect the tension of the cloth.
[0014] Preferably, the shaftless upper cloth tension control device further comprises a plurality of conveying rollers, and the conveying rollers are arranged on the bracket and located behind the output rollers. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of an existing shaftless upper cloth tension control device.
[0016] Figure 2 It is a structural diagram of a shaftless upper cloth tension control device of the utility model. DETAILED DESCRIPTION
[0017] In order to explain the technical content, structural features and effects achieved by the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.
[0018] like Figure 2 As shown, the shaftless cloth tension control device 100 of the utility model comprises a bracket 1, an input roller 2, a swing rod 3, a floating roller 4, a first counterweight roller 5, a position detection element 6, a position adjustment device 7, an output roller 8, a plurality of conveying rollers 9, a tension detection roller 10 and a control system (not shown in the figure), wherein the middle portion of the swing rod 3 is rotatably arranged on the bracket 1 through a pivot shaft 31, the first counterweight roller 5 is arranged at one end of the swing rod 3, and the floating roller 4 is arranged at one end of the swing rod 3 away from the first counterweight roller 5. The conveying roller 9 is arranged on the bracket 1 and is located behind the output roller 8. The cloth is wound around the input roller 2, the floating roller 4, the output roller 8 and the conveying roller 9 in sequence. The tension detection roller 10 is arranged on the bracket 1 and is located before the input roller 2 to detect the tension of the cloth 200. The position detection element 6 is electrically connected to the control system and is used to detect the displacement of the floating roller 4; the position adjustment device 7 is arranged on the bracket 1 and is electrically connected to the control system; the output end of the position adjustment device 7 is connected to the swing rod 3, and can drive the floating roller 4 to move to adjust the tension of the cloth 200.
[0019] Please see again Figure 2The position detection element 6 is an angle detection element for detecting the rotation angle of the pivot shaft or a displacement detection element for detecting the moving position of the floating roller 4. The utility model adopts an angle detection element. By setting an angle detection element or a displacement detection element, the displacement of the floating roller 4 can be detected quickly and accurately, so that it can be fed back to the control system in time, thereby improving the sensitivity and accuracy of tension adjustment.
[0020] Please see again Figure 2 , the first counterweight roller 5 is movably arranged on the swing rod 3 to adjust the torque on the swing rod 3. Specifically, the end of the swing rod 3 away from the floating roller 4 is provided with an elongated hole 32, and the first counterweight roller 5 is slidably arranged in the elongated hole 32. By making the first counterweight roller 5 located at different positions of the elongated hole 32, the torque for balancing the floating roller 4 can be adjusted. The shaftless upper cloth tension control device 100 also includes a second counterweight roller 110, which is fixedly arranged on the end of the swing rod 3 away from the floating roller 4. By using the first counterweight roller 5 and the second counterweight roller 110, the torque of the floating roller 4 on the swing rod 3 can be effectively balanced, so that the resistance of the position adjustment device 7 is smaller, so that the adjustment is more precise.
[0021] Please see again Figure 2 The output end of the position adjustment device 7 is connected to the swing rod 3 and the connection point is located between the pivot shaft 31 and the floating roller 4. The position adjustment device 7 includes a cylinder 71, an electric control converter (not shown) and an air circuit system (not shown). The cylinder 71 is arranged on the bracket 1 and the telescopic end is connected to the swing rod 3. The cylinder 71 adopts a low-resistance cylinder 71. The electric control converter is electrically connected to the control system and the air circuit system respectively, and the air circuit system is connected to the cylinder 71 to control the extension and contraction of the cylinder 71. By setting the electric control converter and the air circuit system, the electrical signal of the position detection element 6 can be converted into a pneumatic signal, thereby realizing the driving of the cylinder 71, so that the cylinder 71 can accurately extend and contract to adjust the position of the floating roller 4, thereby realizing the adjustment of the tension.
[0022] For example Figure 2 As shown, the horizontal heights of the input roller 2 and the output roller 8 are greater than the horizontal height of the floating roller 4. The wrap angle range of the cloth 200 wrapping the floating roller 4 is greater than 90 degrees. In this way, the wrap angle of the floating roller 4 can be larger, ensuring that the tension change of the cloth can be accurately reflected on the floating roller 4, thereby improving the sensitivity of detection.
[0023] Combining the above and Figure 2The working principle of the shaftless upper cloth tension control device 100 of the utility model is described in detail as follows:
[0024] First, the traction device starts to drive the cloth 200 to be transported forward, and the cloth 200 passes through the tension detection roller 10, the input roller 2, the floating roller 4, the output roller 8 and the conveying roller 9 in sequence. When the material discharge speed changes, for example, when the material discharge speed slows down, the cloth 200 drives the floating roller 4 to swing in the direction close to the output roller 8 under the action of the conveying tension. When the floating roller 4 drives the swing rod 3 to swing a certain angle, the pivot shaft rotates a certain angle. At this time, after the position detection element 6 detects the rotation angle of the pivot shaft, it sends a signal to the control system. The control system sends a signal to the electronic control converter according to the signal. The electronic control converter controls the air circuit system, so that the air circuit system drives the cylinder 71. The telescopic rod of the cylinder 71 can push the swing rod 3 to swing in the direction away from the output roller 8. As the swing angle of the swing rod 3 becomes smaller and smaller, until it returns to the initial position, the cylinder 71 stops telescoping. At this time, the swing rod 3 is kept at this position under the interaction of the tension of the cloth and the thrust of the cylinder 71, so that the cloth can achieve the purpose of constant tension.
[0025] Compared with the prior art, the utility model provides a swing rod 3 rotatably disposed on a bracket 1, and a floating roller 4 is disposed at one end of the swing rod 3, and a first counterweight roller 5 is disposed at the other end of the swing rod 3, so that the cloth can be sequentially wound around the input roller 2, the floating roller 4 and the output roller 8 for transportation. The change in the tension of the cloth can cause the swing rod 3 to drive the floating roller 4 to swing within a certain angle range. Therefore, by arranging a position detection element 6, when the tension of the cloth changes and drives the floating roller 4 to move, the position detection element 6 can be used to detect the displacement of the floating roller 4, so that an electrical signal is sent to the control system through the position detection element 6, and then the control system controls the position adjustment device 7 to operate and readjust the position of the floating roller 4, thereby achieving the purpose of adjusting the tension of the cloth. This effectively prevents the occurrence of problems such as wrinkling, slipping or weft skew when the glass fiber cloth is rolled up, reduces material loss, and thus reduces production costs.
[0026] The above disclosure is only a preferred example of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.
Claims
1. A shaftless cloth tension control device, characterized in that: It includes a bracket, an input roller, a swing rod, a floating roller, a first counterweight roller, a position detection element, a position adjustment device, an output roller and a control system, wherein the middle part of the swing rod is rotatably arranged on the bracket through a pivot shaft, the first counterweight roller is arranged at one end of the swing rod, and the floating roller is arranged at the end of the swing rod away from the first counterweight roller, so that the cloth can be wound around the input roller, the floating roller and the output roller in sequence; the position detection element is electrically connected to the control system and is used to detect the displacement of the floating roller; the position adjustment device is arranged on the bracket and electrically connected to the control system; the output end of the position adjustment device is connected to the swing rod and can drive the floating roller to move to adjust the tension of the cloth.
2. The shaftless upper cloth tension control device according to claim 1, characterized in that: The position detection element is an angle detection element for detecting the rotation angle of the pivot shaft or a displacement detection element for detecting the moving position of the floating roller.
3. The shaftless upper cloth tension control device according to claim 1, characterized in that: The first counterweight roller is movably arranged on the swing rod to adjust the torque of the first counterweight roller on the swing rod.
4. The shaftless upper cloth tension control device according to claim 3, characterized in that: The shaftless upper cloth tension control device further comprises a second counterweight roller, which is fixedly arranged at one end of the swing rod away from the floating roller.
5. The shaftless upper cloth tension control device according to claim 1, characterized in that: The output end of the position adjustment device is connected to the swing rod and the connection point is located between the pivot shaft and the floating roller.
6. The shaftless upper cloth tension control device according to claim 1, characterized in that: The position adjustment device includes a cylinder, an electronically controlled converter and an air circuit system. The cylinder is arranged on the bracket and the telescopic end is connected to the swing rod. The electronically controlled converter is electrically connected to the control system and the air circuit system respectively. The air circuit system is connected to the cylinder to control the extension and retraction of the cylinder.
7. The shaftless upper cloth tension control device according to claim 1, characterized in that: The horizontal heights of the input roller and the output roller are greater than the horizontal height of the floating roller.
8. The shaftless upper cloth tension control device according to claim 1, characterized in that: The wrapping angle range of the cloth covering the floating roller is greater than 90 degrees.
9. The shaftless upper cloth tension control device according to claim 1, characterized in that: The shaftless upper cloth tension control device further comprises a tension detection roller, which is arranged on the bracket and located before the input roller to detect the tension of the cloth.
10. The shaftless upper cloth tension control device according to claim 1, characterized in that: The shaftless upper cloth tension control device further comprises a plurality of conveying rollers, wherein the conveying rollers are arranged on the bracket and are located behind the output rollers.