Device for controlling unwinding constant tension of release cloth

Abstract

The utility model discloses a release cloth unwinding constant tension control device, which relates to the technical field of release cloth tension control, and comprises a transverse fixing underframe and a fixing frame, inclined fixing frames are fixedly connected to two sides of the top of the transverse fixing underframe respectively, a magnetic powder brake is fixedly connected to the top of the inclined fixing frame on one side, and a magnetic powder brake is fixedly connected to the top of the fixing frame on the other side. Two bases are fixedly connected between one sides of the fixing frames, tension sensors are fixedly connected to the bottoms of the bases, two connecting rods are fixedly connected between the fixing frames, and a controller is fixedly connected to the surfaces of the connecting rods. The tension sensor is used for detecting the change of a tension value, then the tension value is transmitted to the controller, the controller obtains deviation, then a signal is transmitted to the magnetic powder brake in a current mode, and finally the purpose that the deviation between a detection value and a set value is minimum is achieved. The problem that unwinding tension cannot be kept in a relatively stable state is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding cloth tension control, in particular to a device for constant tension control of demoulding cloth unwinding. Background Technique

[0002] Traditional unwinding tension control usually uses a rope to tie the central roller of the unwinding. When the demoulding cloth is unwound, the central roller rotates, generating friction with the rope, and the unwinding tension is adjusted by adjusting the tightness of the rope tying. Generally, when the diameter of the unwound demoulding cloth roll is larger, the kinetic energy during rotation is greater, and the rope needs to be tied tighter; when the roll diameter is smaller, the tying needs to be appropriately loosened.

[0003] However, in the prior art during use, the current control method cannot accurately control the unwinding tension and cannot ensure that the unwinding tension remains in a relatively stable state. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for constant tension control of demoulding cloth unwinding to solve the problems raised in the above background technique.

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

[0006] A device for constant tension control of demoulding cloth unwinding includes a horizontal fixed base frame and a fixed frame. On both sides of the top of the horizontal fixed base frame, there are respectively fixedly connected with inclined fixed frames. On the top of one of the inclined fixed frames, there is fixedly connected with a magnetic powder brake. The output end of the magnetic powder brake is fixedly connected with an unwinding roller. Between one side of the fixed frames, there are fixedly connected with two bases. Between the two bases, there is a rotatably connected cloth guiding roller. At the bottom of the base, there is fixedly connected with a tension sensor. The surface of the tension sensor is fixedly connected with the inner side of the fixed frame. Between the fixed frames, there are fixedly connected with two connecting rods. On the surface of the connecting rods, there is fixedly connected with a controller.

[0007] Preferably, both the magnetic powder brake and the tension sensor are electrically connected to the controller.

[0008] Preferably, on the surfaces of the two inclined fixed frames, there are fixedly connected with support rods. On the surface of the support rods, there are provided notch openings. Inside the support rods, there is fixedly connected with a support spring. The top of the support spring is fixedly connected with a support plate.

[0009] Preferably, on the surface of the support plate, there is fixedly connected with a support seat. Between the two support seats, there is a rotatably connected cloth feeding guide shaft. The surface of the support plate is slidably connected with the inner side of the notch opening.

[0010] Preferably, between the connecting rods, there is a rotatably connected cloth winding guide shaft. Between the other sides of the fixed frames, there is a rotatably connected winding roller.

[0011] Preferably, a fixing plate is fixedly connected to the top of the diagonal fixing frame on the other side, and the surface of the fixing plate is rotatably connected to one end of the unwinding roller.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] When the present utility model is in use, the controller first sets the required tension when the release cloth passes through the cloth guiding roller. Then, as the winding diameter of the release cloth changes, the tension value of the release cloth detected by the tension sensor when passing through the unwinding roller changes, and thus the signal is fed back to the controller. By comparing with the set value, the deviation is obtained, and then the difference signal is transmitted to the magnetic powder brake in the form of current. The magnetic powder brake receives the change of the input current from the controller, controls the coil current size, adjusts the output torque, and finally achieves the purpose of minimizing the deviation between the detected value and the set value. At the same time, when the release cloth passes through the cloth guiding shaft, because the cloth guiding shaft forms a lifting structure through the support spring, through the elasticity of the support spring, the cloth guiding shaft moves up and down, thereby adjusting the tension of the release cloth, making its tension distribution uniform, so as to maintain the stability of unwinding, improve the quality of the release cloth, and solve the problem that the unwinding tension cannot be guaranteed to remain in a relatively stable state. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the connection structure between the horizontal fixed base frame and the two diagonal fixed frames of the present utility model Figure 1 ;

[0016] Figure 3 is a schematic diagram of the connection structure between the horizontal fixed base frame and the two diagonal fixed frames of the present utility model Figure 2 ;

[0017] Figure 4 is of the present utility model Figure 2 is an enlarged view of the structure at A in the present utility model.

[0018] In the figure: 1, horizontal fixed base frame; 2, diagonal fixed frame; 3, fixing plate; 4, magnetic powder brake; 5, unwinding roller; 6, support rod; 7, support seat; 8, cloth guiding shaft; 9, fixing frame; 10, notch; 11, base; 12, cloth guiding roller; 13, tension sensor; 14, connecting rod; 15, cloth guiding shaft for winding; 16, controller; 17, winding roller; 18, support plate; 19, support spring. Detailed Embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a device for constant tension control of release cloth unwinding, including a horizontal fixed base frame 1 and a fixed frame 9. On both sides of the top of the horizontal fixed base frame 1, diagonal fixed frames 2 are respectively fixedly connected. On the top of one of the diagonal fixed frames 2, a magnetic powder brake 4 is fixedly connected. On the top of the diagonal fixed frame 2 on the other side, a fixing plate 3 is fixedly connected. The surface of the fixing plate 3 is rotatably connected to one end of a pay-off roller 5. The output end of the magnetic powder brake 4 is fixedly connected to the pay-off roller 5. Between one side of the fixed frames 9, two bases 11 are fixedly connected. Between the two bases 11, a cloth guiding roller 12 is rotatably connected. The bottom of the base 11 is fixedly connected with a tension sensor 13. The surface of the tension sensor 13 is fixedly connected to the inner side of the fixed frame 9. Between the fixed frames 9, two connecting rods 14 are fixedly connected. The surface of the connecting rod 14 is fixedly connected with a controller 16. Both the magnetic powder brake 4 and the tension sensor 13 are electrically connected to the controller 16. The controller 16 first sets the required tension when the release cloth passes through the cloth guiding roller 12. Then, as the winding diameter of the release cloth during unwinding changes, the tension value of the release cloth detected by the tension sensor 13 when passing through the pay-off roller 5 changes. Thus, a signal is fed back to the controller 16. By comparing with the set value, a deviation is obtained. Then, the difference signal is transmitted to the magnetic powder brake 4 in the form of current. The magnetic powder brake 4 receives the change in the input current from the controller 16, controls the magnitude of the coil current, adjusts the output torque, and finally achieves the purpose of minimizing the deviation between the detected value and the set value, thereby maintaining the stability of unwinding.

[0021] As Figure 2 , Figure 3 and Figure 4 shown, on the surfaces of the two diagonal fixed frames 2, support rods 6 are fixedly connected. A notch 10 is formed on the surface of the support rod 6. Inside the support rod 6, a support spring 19 is fixedly connected. The top of the support spring 19 is fixedly connected with a support plate 18. The surface of the support plate 18 is fixedly connected with a support seat 7. Between the two support seats 7, a cloth feeding guide shaft 8 is rotatably connected. The surface of the support plate 18 is slidably connected to the inner side of the notch 10. Since the cloth feeding guide shaft 8 forms a lifting structure through the support spring 19, through the elasticity of the support spring 19, the cloth feeding guide shaft 8 moves up and down, thereby adjusting the tension of the release cloth, making its tension distribution uniform, and being beneficial to improving the quality of the release cloth.

[0022] As Figure 1As shown, a cloth collecting guiding shaft 15 is rotatably connected between the connecting rods 14, and a winding drum 17 is rotatably connected between the other sides of the fixing frames 9. The cloth collecting guiding shaft 15 is used for guiding during the winding of the demolding cloth, and the winding drum 17 is used for winding up the demolding cloth.

[0023] Working principle: When in use, cover the demolding cloth on the surfaces of the cloth releasing guiding shaft 8, the cloth releasing drum and the cloth collecting guiding shaft 15, and fix one end to the winding drum 17.

[0024] Then, the controller 16 first sets the required tension when the demolding cloth passes through the guiding cloth drum 12. Then, as the winding diameter of the demolding cloth during unwinding changes, the tension value detected by the tension sensor 13 when the demolding cloth passes through the unwinding drum 5 changes. Thus, a signal is fed back to the controller 16. By comparing with the set value to obtain a deviation, and then the difference signal is transmitted to the magnetic powder brake 4 in the form of current. The magnetic powder brake 4 receives the change in the input current from the controller 16, controls the coil current magnitude, adjusts the output torque, and finally achieves the purpose of minimizing the deviation between the detected value and the set value.

[0025] At the same time, when the demolding cloth passes through the cloth releasing guiding shaft 8, since the cloth releasing guiding shaft 8 forms a lifting structure through the support spring 19, through the elasticity of the support spring 19, the cloth releasing guiding shaft 8 moves up and down, thereby adjusting the tension of the demolding cloth, making its tension distribution uniform, so as to maintain the stability of unwinding and improve the quality of the demolding cloth.

[0026] Through the above operations, the stability of unwinding can be maintained and the quality of the demolding cloth can be improved.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, cloth or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, cloth or device.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for controlling the constant tension of a stripping cloth unwinding, comprising a transverse fixed base frame (1) and a fixed frame (9), characterized in that: The top sides of the transverse fixed base frame (1) are respectively fixedly connected to oblique fixed frames (2); the top of the oblique fixed frame (2) on one side is fixedly connected to a magnetic powder brake (4); the output end of the magnetic powder brake (4) is fixedly connected to an unwinding roller (5); two bases (11) are fixedly connected between one side of the fixed frame (9); a cloth guide roller (12) is rotatably connected between the two bases (11); a tension sensor (13) is fixedly connected to the bottom of the base (11); the surface of the tension sensor (13) is fixedly connected to the inner side of the fixed frame (9); two connecting rods (14) are fixedly connected between the fixed frames (9); and a controller (16) is fixedly connected to the surface of the connecting rods (14).

2. The device for controlling the constant tension of the unwinding of the stripping cloth according to claim 1, characterized in that: The magnetic powder brake (4) and the tension sensor (13) are both electrically connected to the controller (16).

3. The device for controlling the constant tension of the unwinding of the stripping cloth according to claim 1, characterized in that: The surfaces of the two oblique fixing frames (2) are fixedly connected to support rods (6), the surfaces of the support rods (6) are provided with notches (10), the interiors of the support rods (6) are fixedly connected to support springs (19), and the tops of the support springs (19) are fixedly connected to support plates (18).

4. The device for controlling the constant tension of the unwinding of the stripping cloth according to claim 3, characterized in that: The surface of the support plate (18) is fixedly connected to a support seat (7), a cloth placing guide shaft (8) is rotatably connected between the two support seats (7), and the surface of the support plate (18) is slidably connected to the inner side of the notch (10).

5. The device for controlling the constant tension of the unwinding of the stripping cloth according to claim 1, characterized in that: A cloth collecting guide shaft (15) is rotatably connected between the connecting rods (14), and a winding roller (17) is rotatably connected between the other sides of the fixing frame (9).

6. The device for controlling the constant tension of the unwinding of the stripping cloth according to claim 1, characterized in that: A fixing plate (3) is fixedly connected to the top of the oblique fixing frame (2) located on the other side, and a surface of the fixing plate (3) is rotatably connected to one end of the unwinding drum (5).

Images