A tension-visualized small guide wheel for taking up wire
By designing a small wire-receiving guide wheel with visual tension, combined with a tension gauge and polymer wire-receiving wheel, the problem of difficult to control the wire-receiving force after the wire-receiving wire is broken, the efficient and uniform welding joints are receivable, the secondary wire-breaking rate is reduced, and the quality of silicon wafers and process efficiency is improved.
Patent Information
- Application Number
- CN202420709549.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-08
AI Technical Summary
During the silicon wafer slicing process, it is difficult to effectively control the wire collection force after the wire is broken, resulting in a high secondary wire break rate, affecting the quality of the silicon wafer and process efficiency.
A small wire-receiving guide wheel with visual tension is designed, combining the tension meter and polymer guide wheel, and the tension displayed by the bar tension meter controls the appropriate force to achieve a uniform and effective welding joint wire network.
Through this small guide wheel, the secondary line break rate is significantly reduced, the line break processing efficiency and silicon wafer quality are improved, and quality accidents caused by inappropriate line collection force are reduced.
Smart Images
Figure CN222699724U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of silicon wafer slicing, and particularly relates to a tension visualized take-up small guide wheel. Background Art
[0002] At present, in the field of silicon wafer slicing, it is very common for diamond wires to break during operation. Wire cutting is the mainstream means in the industry to save silicon blocks before they are completely sliced after wire breakage. It is also an indispensable method. The treatment effect of the wire saving process directly affects the secondary wire breakage rate, silicon wafer quality and process efficiency.
[0003] When wire breakage occurs, it is necessary to sort out a section of the steel wire ends at both ends of the broken wire. After welding the broken wire ends at both ends, use appropriate wire reeling force (usually between 1.8N-3N) to slowly route the wire into the wire network.
[0004] The common practice in the industry is to hook the welding steel wire outside the wire mesh with your fingers or use a simple small guide wheel to slowly move the wire closer to the wire mesh until it is finally collected into the entire wire mesh.
[0005] This method is not easy to master and can easily injure fingers. The strength of the wire reeling process after the wire cutting is completed needs to be very precise. If the wire reeling force is less than 1.8N, the wire mesh tension is insufficient, causing the wire to be twisted and the full wire mesh to jump, resulting in a second wire break, which seriously affects the quality and efficiency of the silicon wafer; if the wire reeling force is greater than 3N, the wire will be broken again during the wire reeling process or cutting process due to the excessive wire mesh tension (the strength of the steel wire in the welding part is much lower than that of the normal wire mesh). This traditional processing method in the industry requires experienced hands to reasonably control this force. The strength of the first three circles of the welding point needs to be controlled between 1.8N-2.2N (to ensure that the wire reeling tension is less than the breaking tension of the welding point); after three circles, the tension needs to be controlled between 2.2N-3N to ensure that the tension of the entire wire mesh and the wire reeling tension are in a balanced state after being gradually tightened. The entire wire reeling process takes about 10 minutes. It is too difficult to maintain the accurate adjustment of this wire reeling force when there are fluctuations in the wiring process. Even experienced hands will inevitably encounter secondary wire breakage caused by uneven and inappropriate wire reeling force. It is understood that the first-time pass rate of wire welding machines handled by veterans in the industry is about 80%, and there are 0-20% cases of secondary wire breakage, causing incalculable losses.
[0006] In summary, the traditional processing methods in the industry are less safe and reliable. There is an urgent need for a special tool for a small guide wheel with visual tension. Summary of the invention
[0007] The technical problem to be solved by the utility model is to provide a small guide wheel for wire winding with visualized tension, so as to realize standardized wire winding with tension instead of the traditional wire hooking method or simple small guide wheel wire winding method, and to more intuitively see the arrangement of steel wires entering the wire net; timely adjust the direction, visualize and standardize the control of wire winding force, and control the secondary wire breakage rate, thereby improving the efficiency and quality of the entire production line.
[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0009] A tension visualized take-up small guide wheel comprises a tension meter, a pull rod of the tension meter is connected to one end of a rotating shaft of a guide wheel assembly, and the rotating shaft is coaxially connected to a V-groove wheel; the V-groove wheel is used to cooperate with a wire net to process steel wire when the wire is broken.
[0010] Preferably, a connecting ring is provided at the outer end of the pull rod, the connecting ring is sleeved on the end of the rotating shaft, both ends of the rotating shaft are provided with external threads, and the two ends of the rotating shaft are fixed by limiting nuts.
[0011] Preferably, the tensiometer is a strip tensiometer, and the measuring range of the strip tensiometer is 0-5N.
[0012] The utility model can achieve the following beneficial effects:
[0013] The utility model provides a small polymer guide wheel for wire winding, and the polymer guide wheel is fixed on a strip tension meter (specification 5N). When in use, hold the tension meter with the right hand, and put the steel wire into the guide wheel groove with the left hand, and slowly approach the wire net during the routing process. It is only necessary to keep the guide wheel parallel to the moving direction of the wire net and route the wire slowly, so that the steel wire can be evenly collected in the wire net. Compared with the traditional practice in the industry, the use of the small guide wheel of the utility model can more intuitively see the arrangement of the steel wire collected in the wire net, and adjust the direction in time. Timely control the appropriate force according to the tension displayed by the strip tension meter, and evenly and effectively collect the welding points in the wire net. While improving the efficiency of wire breakage processing, it greatly reduces the quality accidents caused by secondary wire breakage caused by inappropriate wire winding force. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0015] Figure 1 This is a rendering of the use of the utility model;
[0016] Figure 2 It is a schematic diagram of the structure of the utility model.
[0017] In the figure: silicon block to be sliced 1, main roller of transmission shaft 2, tension meter 3, pull rod 301, connecting ring 302, guide wheel assembly 4, rotating shaft 401, V-groove wheel 402, limiting nut 403, wire mesh broken wire processing wire 5. DETAILED DESCRIPTION
[0018] The preferred solution is Figure 1 to Figure 2 As shown, a tension visualized take-up small guide wheel comprises a tension meter 3, a pull rod 301 of the tension meter 3 is connected to one end of a rotating shaft 401 of a guide wheel assembly 4, and the rotating shaft 401 is coaxially connected to a V-groove wheel 402; the V-groove wheel 402 is used to cooperate with the wire mesh wire breakage processing steel wire 5. The notch section of the V-groove wheel 402 is V-shaped, and the V-groove wheel 402 is made of polymer material.
[0019] Specifically, a connecting ring 302 is provided at the outer end of the pull rod 301 , and the connecting ring 302 is sleeved on the end of the rotating shaft 401 . External threads are provided at both ends of the rotating shaft 401 , and the two ends of the rotating shaft 401 are fixed by limiting nuts 403 .
[0020] The tension meter 3 is a strip tension meter, and the measuring range of the strip tension meter is 0-5 N. A handle ring is preferably provided at the end of the tension meter 3 to facilitate the staff to take it.
[0021] The operating principle of this device is:
[0022] The wire welding process is to fix the polymer guide wheel on the strip tension meter by holding the tension meter after the steel wire is welded successfully. When using it, hold the tension meter with your right hand and put the steel wire into the guide wheel groove with your left hand, and slowly approach the wire mesh as the wire is routed. You only need to keep the guide wheel parallel to the moving direction of the wire mesh and route the wire slowly, so that the steel wire can be evenly collected in the wire mesh. After completion, the main roller 2 drives the steel wire to move at high speed, and the silicon block 1 slowly descends at the corresponding process table speed and is cut into silicon wafers.
[0023] The small polymer guide wheel is durable and wear-resistant. When the "V" groove of the small guide wheel is deep, it can be removed and replaced in time through the hexagonal nut on the linkage rod. The market price of the guide wheel is less than 2 yuan each, and the market price of the strip dynamometer is less than 5 yuan each. The entire design does not exceed 15 yuan, which is more economical than the electronic dynamometer and has ideal results.
[0024] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. A tension-visualized take-up guide wheel, characterized in that: It comprises a tension meter (3), a pull rod (301) of the tension meter (3) being connected to one end of a rotating shaft (401) of a guide wheel assembly (4), and the rotating shaft (401) being coaxially connected to a V-groove wheel (402); the V-groove wheel (402) is used to cooperate with a wire mesh wire break processing steel wire (5).
2. A tension-visualized take-up small guide wheel according to claim 1, characterized in that: The outer end of the pull rod (301) is provided with a connecting ring (302), and the connecting ring (302) is sleeved on the end of the rotating shaft (401). Both ends of the rotating shaft (401) are provided with external threads, and both ends of the rotating shaft (401) are fixed by limiting nuts (403).
3. A tension-visualized take-up small guide wheel according to claim 1, characterized in that: The tensiometer (3) is a strip tensiometer, and the measuring range of the strip tensiometer is 0~5N.