Wire leading system for vacuum environment and control method thereof

Abstract

The invention discloses a wire leading system for a vacuum environment and a control method thereof.The wire leading system for the vacuum environment comprises a traction wheel, a guide wheel and a wire wound around the traction wheel and the guide wheel, the traction wheel guides the wire to move, and the wire is guided to a preset conveying path through the guide wheel; vacuum-resistant film material layers are arranged on the contact face of the traction wheel and the wire and the contact face of the guide wheel and the wire so that the friction coefficient between the traction wheel and the wire and the friction coefficient between the guide wheel and the wire can be larger than a preset threshold value. According to the wire leading system for the vacuum environment, the friction coefficient of the contact face of the traction wheel and the wire and the friction coefficient of the contact face of the guide wheel and the wire can be reasonably set through the vacuum-resistant film material layer, so that it is guaranteed that the wire is stably conveyed along the preset conveying path in the vacuum environment, and the possibility that the wire slides or curls in the rapid feeding process is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveying systems, and particularly relates to a wire lead-in system for a vacuum environment and a control method thereof. Background Art

[0002] With the progress of industrial manufacturing technology, the demand for high-precision wire conveying in a vacuum environment is increasing in fields such as electronic packaging, semiconductor manufacturing, and precision welding. The stable feeding of the wire is crucial for the performance of the equipment and the quality of the product. However, the particularity of the vacuum environment poses severe challenges to the traditional wire lead-in system for a vacuum environment, and more efficient technical solutions are urgently needed.

[0003] Currently, the wire lead-in system with mechanical traction is the mainstream technology, mainly composed of a mechanical traction device and a guiding device. This technology has a simple structure, low cost, and is easy to maintain, and is suitable for conventional wire conveying tasks, but its performance is limited in a vacuum environment. The reasons are as follows: First, due to insufficient friction, the guiding device is difficult to control the stable movement of the wire, and it is prone to sliding or curling especially during rapid feeding. Second, the guiding device cannot adapt to the air flow disturbance in the vacuum environment, resulting in the wire deviating from the predetermined path, affecting the accuracy of subsequent processes, and increasing the equipment failure rate.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a wire lead-in system for a vacuum environment and a control method thereof. Summary of the Invention

[0005] The purpose of the present invention is to provide a wire lead-in system for a vacuum environment and a control method thereof, which can solve the problems of wire coiling and path deviation of the wire lead-in system in a vacuum environment due to insufficient friction.

[0006] To achieve the above purpose, a specific embodiment of the present invention provides a wire lead-in system for a vacuum environment, and the technical solution is as follows:

[0007] A wire lead-in system for a vacuum environment includes a traction wheel, a guiding wheel, and a wire wound around the traction wheel and the guiding wheel. The traction wheel guides the movement of the wire and is guided by the guiding wheel to a predetermined conveying path, and a vacuum-resistant film layer is provided on the contact surface between the traction wheel and the wire and on the contact surface between the guiding wheel and the wire, so that the friction coefficients between the traction wheel and the wire and between the guiding wheel and the wire are both greater than a preset threshold.

[0008] In one or more embodiments of the present invention, the material of the vacuum-resistant film layer includes rubber or polytetrafluoroethylene.

[0009] In one or more embodiments of the present invention, the traction wheel is provided with a wire groove for winding the wire, and an anti-vacuum film layer is provided on the inner peripheral wall of the wire groove. The groove depth and groove width of the wire groove are adapted to the wire.

[0010] In one or more embodiments of the present invention, the guiding wheel is provided with a guiding groove. The guiding groove includes a bottom contact surface and two limiting surfaces connected to two opposite sides of the bottom contact surface. The bottom contact surface and the two limiting surfaces enclose a limiting space for accommodating the wire, and in the direction away from the bottom contact surface, the distance between the two limiting surfaces gradually increases.

[0011] In one or more embodiments of the present invention, the guiding wheel is provided with convex points on the inner surface of the guiding groove.

[0012] In one or more embodiments of the present invention, the predetermined conveying path includes at least one key path point, and the guiding wheel is provided at the key path point. Wherein, the key path point is an inflection point of the conveying path.

[0013] In one or more embodiments of the present invention, the traction wheel and the guiding wheel are made of materials resistant to low air pressure, high temperature, vacuum, and high strength.

[0014] A specific embodiment of the present invention further provides a control method for a wire lead-in system in a vacuum environment. The technical solution is as follows:

[0015] A control method for a wire lead-in system in a vacuum environment includes:

[0016] Obtaining the tension value of the wire in the wire lead-in system, wherein the wire lead-in system is the wire lead-in system in a vacuum environment as described above;

[0017] Based on the tension value, determining whether to adjust the rotation speed of the traction wheel;

[0018] When the tension value is within the preset range, controlling the traction wheel to maintain the current rotation speed;

[0019] When the tension value is greater than the upper limit of the preset range, reducing the rotation speed of the traction wheel;

[0020] When the tension value is less than the lower limit of the preset range, increasing the rotation speed of the traction wheel.

[0021] In one or more embodiments of the present invention, when the tension value exceeds the controllable range, an alarm is issued and the traction wheel is controlled to stop rotating.

[0022] In one or more embodiments of the present invention, obtaining the tension value of the wire in the wire lead-in system specifically includes:

[0023] Provide an initialized signal driver, a tension sensor, and a signal converter;

[0024] Drive the tension sensor through the signal driver to obtain an analog signal reflecting the tension of the wire;

[0025] Read and convert the analog signal into a tension value through the signal converter.

[0026] Compared with the prior art, in the wire lead system for a vacuum environment of the present invention, the friction coefficients of the contact surfaces between the traction wheel and the wire and between the guide wheel and the wire can be reasonably set through the vacuum-resistant film layer to ensure the stable conveyance of the wire along a predetermined conveyance path in a vacuum environment, reducing the possibility of the wire slipping or curling during rapid feeding. In the control method of the wire lead system for a vacuum environment of the present invention, by obtaining the tension value of the wire in the wire lead system and making adaptive adjustments based on the tension value, the wire conveyance efficiency in a vacuum environment is effectively improved. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 Are the three-view drawings of the wire lead system for a vacuum environment in an embodiment of the present invention;

[0029] Figure 2 Are the three-view drawings of the guide wheel in an embodiment of the present invention;

[0030] Figure 3 Is the flowchart of the control method of the wire lead system for a vacuum environment in an embodiment of the present invention.

[0031] Main reference numeral description:

[0032] 1. Traction wheel; 2. Guide wheel; 21. Guide groove; 3. Wire; 4. Bracket. Detailed Description of the Embodiments

[0033] To enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Referring to Figure 1 and Figure 2 , in a wire lead system for a vacuum environment according to an embodiment of the present invention, it includes a traction wheel 1, a guide wheel 2, and a wire 3 wound around the traction wheel 1 and the guide wheel 2. The traction wheel 1 guides the movement of the wire 3 and is guided by the guide wheel 2 to a predetermined conveying path. A vacuum-resistant film layer is provided on the contact surface between the traction wheel 1 and the wire 3 and on the contact surface between the guide wheel 2 and the wire 3, so that the friction coefficients between the traction wheel 1 and the wire 3 and between the guide wheel 2 and the wire 3 are both greater than a preset threshold value. Among them, the preset threshold value can be specifically set according to the actual situation of the vacuum environment to ensure the friction force between the traction wheel 1, the guide wheel 2, and the wire 3, so as to ensure the effective operation of the wire lead system in the vacuum environment.

[0035] Specifically, the material of the vacuum-resistant film layer includes rubber or polytetrafluoroethylene. In this embodiment, taking the material of the vacuum-resistant film layer being set as a rubber material as an example for exemplary elaboration, this is not a limitation on the material selection of the vacuum-resistant film layer. In other embodiments, the vacuum-resistant film layer can also be adjusted according to the requirements of vacuum resistance and friction coefficient. At the same time, the vacuum-resistant film layer is selected from materials with wear resistance and vacuum resistance, which can ensure the durability of the wire lead system for the vacuum environment.

[0036] Among them, the traction wheel 1 can drive the wire 3 to move along a predetermined conveying path by rotation to complete the conveying of the wire 3 in the vacuum environment. The vacuum-resistant film layer can ensure that the friction force between the traction wheel 1, the guide wheel 2, and the wire 3 meets the requirements, so as to reduce the possibility of the wire 3 slipping or curling during rapid feeding, and reduce the possibility of the wire 3 deviating from the predetermined conveying path.

[0037] Referring to Figure 1 , the traction wheel 1 is provided with a wire groove for winding the wire 3, and a vacuum-resistant film layer is provided on the inner peripheral wall of the wire groove. The groove depth and groove width of the wire groove are adapted to the wire 3. The adaptive design of the groove depth and groove width can prevent the wire 3 from slipping or jumping out of the groove.

[0038] Referring to Figure 2, the guiding wheel 2 is provided with a guiding groove 21. The guiding groove 21 includes a bottom contact surface and two limiting surfaces connected to the two opposite sides of the bottom contact surface. The bottom contact surface and the two limiting surfaces enclose a limiting space for accommodating the wire 3, and in the direction away from the bottom contact surface, the distance between the two limiting surfaces gradually increases. Among them, the wire 3 is arranged in the guiding groove 21 and can be restricted from detaching from the guiding wheel 2 through the bottom contact surface and the two limiting surfaces to ensure that the wire 3 moves along a predetermined conveying path. In this embodiment, the high-temperature resistant film layer can be arranged on the bottom contact surface and the two limiting surfaces.

[0039] In an alternative embodiment, the wire guiding system for vacuum environment further includes a bracket 4, and the guiding wheel 2 is rotatably installed on the bracket 4. Therefore, the movement of the wire 3 can drive the guiding wheel 2 to rotate adaptively.

[0040] In this embodiment, the predetermined conveying path includes at least one key path point, and a guiding wheel 2 is arranged at the key path point. Among them, the key path point is an inflection point of the conveying path. By setting the key path point, the predetermined conveying path can be determined, thereby ensuring the effective conveying of the wire 3.

[0041] In an alternative embodiment, the guiding wheel 2 is provided with convex points on the inner surface of the guiding groove 21, which can further improve the friction of the guiding wheel 2 and ensure the effective conveying of the wire 3.

[0042] Among them, the traction wheel 1 and the guiding wheel 2 are made of materials resistant to low air pressure, high temperature, vacuum, and high strength. In this embodiment, the traction wheel 1 and the guiding wheel 2 can be made of materials such as polymer materials, stainless steel, or ceramics to ensure their long-term operation in a vacuum environment without failure.

[0043] Referring to Figure 1 and Figure 3 , a control method for the wire guiding system for vacuum environment in an embodiment of the present invention includes:

[0044] S201. Obtain the tension value of the wire 3 in the wire guiding system, where the wire guiding system is the above-mentioned wire guiding system for vacuum environment. Specifically, it includes:

[0045] Provide a signal driver, a tension sensor, and a signal converter that have been initialized; drive the tension sensor through the signal driver to obtain an analog signal reflecting the tension of the wire 3; read and convert the analog signal into a tension value through the signal converter.

[0046] S202. When the tension value is within the preset range, control the traction wheel 1 to maintain the current rotational speed; when the tension value is greater than the upper limit of the preset range, lower the rotational speed of the traction wheel 1; when the tension value is less than the lower limit of the preset range, increase the rotational speed of the traction wheel 1. Among them, the preset range can be specifically set according to the actual situation. According to the numerical change of the tension value, the rotational speed of the traction wheel 1 can be adaptively adjusted, so as to ensure the efficient operation of the wire lead system for the vacuum environment.

[0047] S203. When the tension value exceeds the controllable range, give an alarm and control the traction wheel 1 to stop rotating. Among them, the controllable range can be specifically set according to the actual situation. In this embodiment, a sound alarm, such as a buzzer, can also be provided. When the alarm condition is triggered, the sound alarm can be triggered to operate to remind relevant staff to maintain and repair. It can be understood that in other embodiments, other forms of alarm methods can also be set.

[0048] Therefore, the wire tension control method of this embodiment effectively improves the wire conveying efficiency in the vacuum environment by obtaining the tension value of the wire 3 in the wire lead system and making adaptive adjustments based on the tension value.

[0049] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0050] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wire lead system for a vacuum environment, characterized in that: The invention comprises a traction wheel (1), a guide wheel (2), and a wire (3) passing through the traction wheel (1) and the guide wheel (2); the traction wheel (1) guides the wire (3) to move and is guided by the guide wheel (2) to a predetermined conveying path; and a vacuum-resistant film material layer is provided on the contact surface between the traction wheel (1) and the wire (3) and on the contact surface between the guide wheel (2) and the wire (3), so that the friction coefficient between the traction wheel (1) and the wire (3) and between the guide wheel (2) and the wire (3) is greater than a preset threshold.

2. The wire lead system for vacuum environment according to claim 1, characterized in that: The material of the vacuum-resistant film layer includes rubber or polytetrafluoroethylene.

3. The wire lead system for vacuum environment according to claim 1, characterized in that: The traction wheel (1) is provided with a wire groove for winding the wire (3), the inner peripheral wall of the wire groove is provided with the vacuum-resistant film material layer, and the groove depth and groove width of the wire groove are adapted to the wire (3).

4. The wire lead system for vacuum environment according to claim 1, characterized in that: The guide wheel (2) is provided with a guide groove (21), the guide groove (21) comprising a bottom contact surface and two limiting surfaces connected to two opposite sides of the bottom contact surface, the bottom contact surface and the two limiting surfaces together form a limiting space for accommodating the wire (3), and in a direction away from the bottom contact surface, the distance between the two limiting surfaces gradually increases.

5. The wire lead system for vacuum environment according to claim 4, characterized in that: The guide wheel (2) is provided with convex points on the inner surface of the guide groove (21).

6. The wire lead system for vacuum environment according to claim 1, characterized in that: The predetermined conveying path comprises at least one key path point, and the guide wheel (2) is arranged at the key path point, wherein the key path point is an inflection point of the conveying path.

7. The wire lead system for vacuum environment according to claim 1, characterized in that: The traction wheel (1) and the guide wheel (2) are made of a high-strength material that is resistant to low air pressure, high temperature, and vacuum.

8. A control method for a wire lead system for a vacuum environment, characterized in that: include: Obtaining a tension value of a wire (3) in a wire lead system, wherein the wire lead system is a wire lead system for a vacuum environment as claimed in any one of claims 1 to 7; When the tension value is within a preset range, controlling the traction wheel (1) to maintain a current rotation speed; When the tension value is greater than the upper limit of the preset range, the rotation speed of the traction wheel (1) is reduced; When the tension value is less than the lower limit of the preset range, the rotation speed of the traction wheel (1) is increased.

9. The control method of the wire lead system for a vacuum environment according to claim 8, characterized in that: Also includes: When the tension value exceeds a controllable range, an alarm is issued and the traction wheel (1) is controlled to stop rotating.

10. The control method of the wire lead system for a vacuum environment according to claim 8, characterized in that: Obtaining the tension value of the wire (3) in the wire (3) lead system, specifically including: Provide initialized signal driver, tension sensor and signal converter; Driving the tension sensor through the signal driver to obtain an analog signal reflecting the tension of the wire (3); The analog signal is read and converted into a tension value by the signal converter.

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