Yarn clamping device and drafting hot box

Abstract

The utility model discloses a yarn clamping device which comprises a yarn clamping executing mechanism which is movably arranged in the set direction, the yarn clamping executing mechanism comprises a first clamping plate and a second clamping plate which is matched with the first clamping plate to clamp fiber yarns, and the first clamping plate and the second clamping plate are movably arranged. According to the yarn clamping device, manual yarn placement can be replaced, the situation that the temperature in a hot box is changed when a drafting hot box is opened is avoided, the production stability of fiber yarn is guaranteed, the quality of fiber yarn products is improved, waste yarn can be reduced, the starting time can be shortened, and automatic production can be achieved. The utility model further discloses a drafting hot box.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultra-high molecular weight polyethylene fiber production equipment, and specifically relates to a wire clamping device and a drafting hot box. Background Art

[0002] In the existing ultra-high molecular weight polyethylene fiber production process, during heat stretching, it is often necessary to manually pull the fiber through the drawing hot box. Manual fiber laying requires the cooperation of two workers, one responsible for pulling the fiber and the other responsible for opening and closing the drawing hot box.

[0003] The existing drafting hot box includes an upper box body and a lower box body, which are connected by rotation, and a heating device, an air duct and a fan are arranged in the lower box body. When laying the silk manually, the upper box body is rotated upward, and the upper box body is opened at a larger angle to open the drafting hot box. After the drafting hot box is opened, a large amount of air will enter the upper box body, and the heat in the upper box body will also escape, causing the temperature of the drafting hot box to change. When the silk laying is completed and the upper box body is closed, it is necessary to wait for the temperature in the drafting hot box to reach the set value and balance for a certain period of time. Therefore, the quality of the fibers produced during this period is mostly unqualified and becomes waste silk. Therefore, the existing technology has the defects of long startup time, much material waste and increased cost.

[0004] For example, the patent document with the authorization announcement number CN202830251U discloses a hot box device for drawing ultra-high molecular weight polyethylene fiber, which includes a box body composed of an upper box body and a lower box body, and a drawing chamber and a circulating air duct with an inner surface covered with a porous core material structure are arranged in the box body; one end of the drawing chamber is a tow inlet and an air inlet, and the other end is a tow outlet and an air outlet; a fan, a heat sink heating tube and a high-efficiency air supply port are arranged in the air duct; 3-6 openable box side doors are arranged on one side of the box body, and a heat insulation material layer is arranged in the upper box body, the lower box body and the box body side door. The technical solution disclosed in the patent document cannot solve the technical problems recorded above. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a wire clamping device, the purpose of which is to improve the quality of fiber products and reduce the generation of waste wire.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a wire clamping device, including a wire clamping actuator that can be movably arranged along a set direction, the wire clamping actuator includes a first clamping plate and a second clamping plate that cooperates with the first clamping plate to clamp the fiber wire, and the first clamping plate and the second clamping plate are movably arranged.

[0007] The first clamping plate is located above the second clamping plate, and the wire clamping actuator also includes an elastic element connected to the first clamping plate and used for applying an elastic force to the first clamping plate.

[0008] The elastic element is provided in plurality.

[0009] The elastic element is a tension spring.

[0010] The wire clamping actuator also includes an elevator for controlling the second clamping plate to be lifted and lowered, and the elevator is connected to the second clamping plate.

[0011] A first contact piece with a rough surface and used for contacting the fiber filaments is disposed on the first clamping plate, and a second contact piece with a rough surface and used for contacting the fiber filaments is disposed on the second clamping plate.

[0012] The first contact piece and the second contact piece are made of thermoplastic elastomer or rubber.

[0013] The first contact member is arranged on the surface of the first clamping plate, and the surface of the first clamping plate is an arc surface, a corrugated surface or a serrated surface.

[0014] The second contact piece is arranged on the surface of the second clamping plate, and the surface of the second clamping plate is an arc surface, a corrugated surface or a serrated surface.

[0015] The wire clamping device also includes a driving mechanism connected to the wire clamping actuator and used to control the wire clamping actuator to move.

[0016] The driving mechanism comprises a driving motor and a power transmission mechanism connected to the driving motor, and the power transmission mechanism is connected to the wire clamping actuator.

[0017] The power transmission mechanism is a chain transmission mechanism.

[0018] The utility model also provides a drafting hot box, comprising the wire clamping device.

[0019] The wire clamping device of the utility model can improve the efficiency of wire laying by arranging a movable wire clamping actuator to replace manual wire laying, avoid opening the drawing hot box for a long time which causes the temperature inside the hot box to change, ensure the production stability of the fiber yarn, improve the quality of the fiber yarn product, reduce the generation of waste yarn, shorten the start-up time, and realize automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] This specification includes the following drawings, which show the following contents:

[0021] Figure 1 This is the front view of the wire clamping device of the utility model;

[0022] Figure 2 It is a top view of the wire clamping device of the utility model;

[0023] Figure 3 It is a schematic diagram of the front structure of the drafting hot box;

[0024] Figure 4 It is a schematic diagram of the internal structure of the drafting hot box from the side;

[0025] Figure 5 It is a schematic diagram of the side external structure of the drafting hot box;

[0026] Figure 6 It is a schematic diagram of the structure of the cover;

[0027] The markings in the figure are: 1. first clamping plate; 2. second clamping plate; 3. first contact piece; 4. second contact piece; 5. elastic element; 6. elevator; 7. driving motor; 8. driving wheel; 9. driven wheel; 10. supporting wheel; 11. driving shaft; 12. power transmission mechanism; 13. fixing plate; 14. box body; 15. heating device; 16. controller; 17. sliding seat; 18. first opening; 19. wire inlet. DETAILED DESCRIPTION

[0028] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0029] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0030] like Figures 1 to 5 As shown, the utility model provides a wire clamping device for a drafting hot box, including a wire clamping actuator that can be movably arranged along a set direction, the wire clamping actuator includes a first clamping plate 1 and a second clamping plate 2 that cooperates with the first clamping plate 1 to clamp the fiber filaments, and the first clamping plate 1 and the second clamping plate 2 are movable. By setting a movable wire clamping actuator to replace manual wire laying, it is avoided that the temperature in the hot box changes when the drafting hot box is opened, the production stability of the fiber filaments is guaranteed, the quality of the fiber filament products is improved, the generation of waste silk can be reduced, and the startup time can be shortened, and automatic production can be realized.

[0031] Specifically, if Figure 1 and Figure 2 As shown, the first clamping plate 1 is located above the second clamping plate 2 , and the wire clamping actuator further includes an elastic element 5 connected to the first clamping plate 1 and used for applying an elastic force to the first clamping plate 1 .

[0032] like Figure 1 and Figure 2As shown, the wire clamping actuator also includes a sliding seat 17. The first clamping plate 1 is slidably connected to the sliding seat 17. The elastic element 5 is arranged inside the sliding seat 17. A plurality of elastic elements 5 are arranged. All elastic elements 5 are distributed on opposite sides of the first clamping plate 1. The elastic element 5 is vertically arranged. The elastic element 5 applies an elastic force to the first clamping plate 1 to move it downward, so that the first clamping plate 1 can cooperate with the second clamping plate 2 below to clamp the fiber filaments in the middle, thereby ensuring the clamping reliability.

[0033] In this embodiment, the elastic element 5 is a tension spring, the upper end of the elastic element 5 is connected to the first clamping plate 1, and the lower end of the elastic element 5 is connected to the fixed plate 13. The fixed plate 13 is fixedly set on the sliding seat 17. A cavity for accommodating the elastic element 5 is set in the sliding seat 17. The cavity can limit the first clamping plate 1 so that the first clamping plate 1 has a fixed minimum height. It can also help to make all the fiber filaments between the first clamping plate 1 and the second clamping plate 2 to prevent some fiber filaments from being unclamped. The fixed plate 13 is made of metal and is set horizontally.

[0034] like Figure 1 and Figure 2 As shown, the wire clamping actuator also includes an elevator 6 for controlling the second clamping plate 2 to be lifted and lowered, and the elevator 6 is connected to the second clamping plate 2. The elevator 6 is electrically connected to the controller 16 and is controlled by the controller 16. The elevator 6 is installed on the sliding seat 17, and the elevator 6 is a member that can be retracted in the vertical direction. The upper end of the elevator 6 passes through the fixed plate 13, and the upper end of the elevator 6 is fixedly connected to the second clamping plate 2, and the lower end of the elevator 6 is fixedly connected to the sliding seat 17. When the elevator 6 is extended, the second clamping plate 2 is pushed to move upward; when the elevator 6 is retracted, the second clamping plate 2 is pulled to move downward.

[0035] When it is necessary to clamp the fiber filaments, the elevator 6 extends and pushes the second clamping plate 2 upward to contact the fiber filaments until the second clamping plate 2 cooperates with the first clamping plate 1 to clamp the fiber filaments in the middle. The elastic element 5 applies a downward elastic force to the first clamping plate 1 to clamp the fiber filaments. Then the wire clamping actuator moves linearly in the horizontal direction as a whole. The wire clamping actuator drives the fiber filaments to move linearly synchronously to perform the wire laying operation.

[0036] like Figure 1 As shown, a first contact piece 3 with a rough surface for contacting with the fiber filament is provided on the first clamping plate 1, and a second contact piece 4 with a rough surface for contacting with the fiber filament is provided on the second clamping plate 2. The first contact piece 3 is provided on the lower surface of the first clamping plate 1, and the second contact piece 4 is provided on the upper surface of the second clamping plate 2. The rough surfaces of the first contact piece 3 and the second contact piece 4 can increase the friction force and ensure that the fiber filament is clamped more reliably.

[0037] Preferably, the first contact member 3 and the second contact member 4 are made of high temperature resistant thermoplastic elastomer or rubber.

[0038] In this embodiment, the first contact member 3 and the second contact member 4 are made of high temperature resistant rubber.

[0039] like Figure 1 As shown, as a preferred embodiment, the first contact member 3 is arranged on the surface of the first clamping plate 1, and the surface of the first clamping plate 1 is a circular arc surface, a corrugated surface or a serrated surface. The second contact member 4 is arranged on the surface of the second clamping plate 2, and the surface of the second clamping plate 2 is a circular arc surface, a corrugated surface or a serrated surface.

[0040] In this embodiment, the first contact member 3 is arranged on the surface of the first clamping plate 1, the surface of the first clamping plate 1 is an arc surface, the surface of the first clamping plate 1 is convex downward, and the first contact member 3 is arc-shaped. The second contact member 4 is arranged on the surface of the second clamping plate 2, the surface of the second clamping plate 2 is an arc surface, the surface of the second clamping plate 2 is concave downward, and the second contact member 4 is arc-shaped. The axes of the first contact member 3 and the second contact member 4 are parallel, and the axes of the first contact member 3 and the second contact member 4 are parallel to the moving direction of the wire clamping actuator.

[0041] like Figures 1 to 5 As shown, the wire clamping device of the utility model also includes a driving mechanism connected to the wire clamping actuator and used to control the wire clamping actuator to move. The driving mechanism mainly includes a driving motor 7 and a power transmission mechanism 12 connected to the driving motor 7, and the power transmission mechanism 12 is connected to the wire clamping actuator.

[0042] The power transmission mechanism 12 has various forms. In this embodiment, Figure 2 and Figure 3 As shown, the power transmission mechanism 12 is a chain transmission mechanism, which mainly includes a chain and a driving wheel 8, a driven wheel 9 and a support wheel 10 meshed with the chain. The chain is fixedly connected to a fixed plate 13, and a plurality of support wheels 10 are provided, and the support wheel 10 is located between the driving wheel 8 and the driven wheel 9. The output end of the driving motor 7 is fixedly connected to the driving shaft 11, and the driving wheel 8 is fixedly arranged on the driving shaft 11. The driving motor 7 is electrically connected to the controller 16 and is controlled by the controller 16. After the driving motor 7 is running, the entire wire clamping actuator is driven to move linearly through the chain transmission mechanism.

[0043] In this embodiment, if Figure 2 As shown, two chain transmission mechanisms are provided. The chain transmission mechanism can withstand high temperatures and has better reliability. The drive shaft 11 is connected to the driving wheels 8 of the two chain transmission mechanisms, and the chains of the two chain transmission mechanisms are connected to the fixing plate 13.

[0044] The utility model also provides a drafting hot box, comprising a wire clamping device of the above structure.

[0045] like Figures 1 to 5 As shown, the drafting hot box of the utility model also includes a box body 14, the wire clamping actuator is arranged in the upper cavity of the box body 14, the chain of the chain transmission mechanism horizontally passes through the upper cavity of the box body 14, and the driving wheel 8 and the driven wheel 9 are located outside the box body 14. A wire inlet is arranged at one end of the box body 14, and a wire outlet is arranged at the other end, the upper cavity is located between the wire inlet and the wire outlet, and the driving motor 7 is located below the wire inlet.

[0046] Preferably, movable covers are provided at the wire inlet and wire outlet of the box 14, and the covers are located directly above the chain. The first cover provided at the wire inlet end of the box 14 is rotatably connected to the box 14 through a loose-leaf hinge, the first cover is located directly above the chain, an outward-opening transmission handle is provided on the first cover, the first cover can be rotated toward the outside of the box 14, and a first opening is opened at one end of the box 14 to allow the wire clamping actuator to enter and exit, and the first opening has a smaller area. The second cover provided at the wire outlet end of the box 14 is rotatably connected to the box 14 through a loose-leaf hinge, the second cover is located directly above the chain, an outward-opening transmission handle is provided on the second cover, the second cover can be rotated toward the outside of the box 14, and a second opening is opened at the other end of the box 14 to allow the wire clamping actuator to enter and exit, and the second opening has a smaller area.

[0047] By arranging the first opening and the second opening at both ends of the box body 14, and arranging a cover plate to control the opening and closing of the first opening and the second opening, the opening area at both ends of the box body 14 is not large when laying the silk, and there is no need to open it greatly. In addition, the silk laying is automated, and the time period required for laying the silk is short, so the amount of air entering the box body 14 and the amount of hot air escaping is relatively small, which has little effect on the temperature inside the drawing hot box, thereby ensuring the quality of the fiber silk and stable production, reducing the generation of waste silk, shortening the startup time, and reducing costs.

[0048] like Figure 4 As shown, a heating device 15, an air duct and a fan are arranged in the lower cavity of the box body 14, the lower cavity is located below the upper cavity, and the heating device 15 and the fan are both connected to the controller 16 and controlled by the controller 16. The heating device 15 generates heat after being started, and the fan transports the heat generated by the heating device 15 to the upper cavity of the box body 14 through the air duct.

[0049] The working process of the drafting hot box is as follows:

[0050] 1. When the production line is started, set the temperature of the drafting hot box in advance and start the heating device 15 and the fan;

[0051] 2. Next, open the first cover plate and the second cover plate at both ends of the box body, so that the first opening and the second opening at both ends of the box body are opened. If the wire clamping actuator is not in front of the first opening, it is necessary to move the wire clamping actuator in front of the first opening;

[0052] 3. When starting the machine, the operator passes all the fiber threads between the first clamping plate 1 and the second clamping plate 2 of the clamping actuator, and then moves the second clamping plate 2 upward. The second clamping plate 2 pushes the fiber threads to rise, and after contacting the first clamping plate 1, it pushes the first clamping plate 1 to rise to a certain position and then stops. At this time, the fiber threads are tightly clamped by the first clamping plate 1 and the second clamping plate 2;

[0053] 4. Start the drive motor 7. After the drive motor 7 is started, the wire clamping actuator is driven to move through the power transmission mechanism, so that the wire clamping actuator moves toward the second opening, passes through the second opening, and stops at a certain position behind the second opening;

[0054] 5. After the fiber laying is completed, the first clamping plate 1 and the second clamping plate 2 are loosened, and the operator takes out the fiber yarn, making sure that the fiber yarn avoids the clamping device;

[0055] 6. Close the first cover plate and the second cover plate at both ends of the drafting heat box to close the first opening and the second opening.

[0056] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A wire clamping device, characterized in that: The utility model comprises a wire clamping actuator which is movably arranged along a set direction, the wire clamping actuator comprises a first clamping plate and a second clamping plate which cooperates with the first clamping plate to clamp the fiber wire, and the first clamping plate and the second clamping plate are movably arranged.

2. The wire clamping device according to claim 1, characterized in that: The first clamping plate is located above the second clamping plate, and the wire clamping actuator also includes an elastic element connected to the first clamping plate and used for applying an elastic force to the first clamping plate.

3. The wire clamping device according to claim 2, characterized in that: A plurality of elastic elements are provided.

4. The wire clamping device according to claim 2, characterized in that: The wire clamping actuator also includes an elevator for controlling the second clamping plate to be lifted and lowered, and the elevator is connected to the second clamping plate.

5. The wire clamping device according to any one of claims 1 to 4, characterized in that: A first contact piece with a rough surface and used for contacting the fiber filaments is disposed on the first clamping plate, and a second contact piece with a rough surface and used for contacting the fiber filaments is disposed on the second clamping plate.

6. The wire clamping device according to claim 5, characterized in that: The first contact piece and the second contact piece are made of thermoplastic elastomer or rubber.

7. The wire clamping device according to claim 5, characterized in that: The first contact member is arranged on the surface of the first clamping plate, and the surface of the first clamping plate is an arc surface, a corrugated surface or a serrated surface.

8. The wire clamping device according to claim 5, characterized in that: The second contact piece is arranged on the surface of the second clamping plate, and the surface of the second clamping plate is an arc surface, a corrugated surface or a serrated surface.

9. The wire clamping device according to any one of claims 1 to 4, characterized in that: It also includes a driving mechanism connected to the wire clamping actuator and used to control the wire clamping actuator to move. The driving mechanism includes a driving motor and a power transmission mechanism connected to the driving motor. The power transmission mechanism is connected to the wire clamping actuator.

10. Drafting hot box, characterized by: It comprises the wire clamping device described in any one of claims 1 to 9.

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