Clamp structure for removing plating layers in spot welding areas of nickel-plated reeds in batches

Abstract

The utility model discloses a fixture structure for removing plating layers in spot welding areas of nickel-plated reeds in batches, which comprises a bottom tire, a pressing plate and a positioning block, the bottom tire and the positioning block are fixed on a milling machine, a groove is arranged on the upper surface of the bottom tire, a plurality of nickel-plated reeds are arranged in the groove, the pressing plate is arranged above the bottom tire and fixed by bolts, and the positioning block is fixed on the bottom tire. A through groove is formed in one side of a bolt hole of the pressing plate, and the bolt is slidably connected with the pressing plate. A plurality of nickel-plated reeds can be fixed at a time, plating layers are removed in batches through a milling cutter, the grinding efficiency is improved, the product quality requirement is met, and the safety and reliability of products are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of reed clamps, in particular to a clamp structure for batch removing plating layers in spot welding areas of nickel-plated reeds. Background Art

[0002] Railway signal relay is one of the key components in the railway system. The reliability of the relay reed spot welding directly affects the reliability and safety of the signal system. Figure 1 The picture shows a nickel-plated reed, one of the parts of the company's self-developed relay. As the moving contact of the relay, the moving contact requires two nickel-plated reeds to be spot welded together for use.

[0003] The spot weldability of copper-based nickel-plated reeds is weaker than that of ordinary copper reeds. When thick copper-based nickel-plated reeds are being spot welded, the nickel plating can easily lead to false welds. This is simply a fusion weld between the nickel plating layers of the two reeds, but the copper substrates themselves are not completely fused together, resulting in a weak spot weld. This problem of false welds is currently addressed by workers manually removing the plating from the spot weld areas of copper-based nickel-plated reeds using a grinding rod, which is time-consuming and labor-intensive, and results in inconsistent polishing. Utility Model Content

[0004] In view of the above shortcomings and deficiencies, the utility model provides a clamp structure for batch removal of the plating in the spot welding area of nickel-plated reeds. It can fix multiple nickel-plated reeds at one time, use a milling cutter to remove the plating in batches, improve the grinding efficiency, meet product quality requirements, and ensure the safety and reliability of the product.

[0005] In order to achieve the above-mentioned purpose, the main technical solution adopted by the utility model is a fixture structure for batch removing the plating in the spot welding area of nickel-plated reeds, including a base tire, a pressure plate and a positioning block. The base tire and the positioning block are fixed on a milling machine. A groove is provided on the upper surface of the base tire. A plurality of nickel-plated reeds are arranged in the groove. The pressure plate is arranged above the base tire and fixed in position by bolts. The bolt opening of the pressure plate is like a through groove on one side, and the bolt is slidably connected to the pressure plate.

[0006] A rubber pressure pad is provided below the pressure plate, and the width of the rubber pressure pad is greater than the width of the groove of the bottom tire.

[0007] A milling platform is provided on one side of the base tire, the height of the milling platform is lower than the groove, and limiting protrusions are provided on both sides of the milling platform, and the height of the limiting protrusions is less than the thickness of the nickel-plated reed.

[0008] The groove is provided with a U-shaped opening for facilitating the picking up of the nickel-plated reed, and the depth of the groove is adapted to the thickness of the nickel-plated reed.

[0009] The positioning block abuts against one end of the nickel-plated spring.

[0010] The utility model has the following beneficial effects and advantages:

[0011] The utility model discloses a clamp for batch removing the plating of the spot welding area of nickel-plated reeds, which can fix multiple nickel-plated reeds at one time, and use a milling cutter to remove the plating in batches. The groove of one end of the base tire is provided with blank cuts on both sides, which is convenient for picking up the reeds; the height of the limiting protrusion of the base tire is lower than the thickness of the reed, which is convenient for using a drilling and milling machine to remove the plating in this area of the reed; the positioning block plays a positioning role at one end, and its position fixed on the drilling and milling machine table can be adjusted according to the floating length of the reed; the through groove opened on one side of the pressure plate can be used to unscrew the bolt until the pressure plate is directly withdrawn, thereby improving the efficiency of clamping the reeds, and a rubber pressure pad is provided under the base plate to press the reeds, which will not damage the reeds; compared with removing the plating by manual grinding with a file, the production efficiency is improved and the labor intensity of the operator is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the nickel-plated reed structure;

[0013] Figure 2 This is an exploded view of the fixture structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the fixture structure of the utility model after the nickel-plated reed is placed;

[0015] Figure 4 This is a schematic diagram of the structure of the clamp structure of the utility model after limiting the nickel-plated reed;

[0016] Figure 5 This is a top view of the bottom tire of the utility model;

[0017] Figure 6 This is a schematic diagram of the pressing plate structure of the utility model.

[0018] Among them, 1 is the base tire, 2 is the positioning block, 3 is the pressure plate, 4 is the bolt, 5 is the rubber pressure pad, 6 is the U-shaped mouth, 7 is the milling table, 8 is the limiting convex, 9 is the groove, and 10 is the nickel-plated reed. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. Figure 2-3 As shown, the utility model is a fixture for batch removal of the plating layer in the spot welding area of nickel-plated reeds, comprising a base tire 1, a pressure plate 3 and a positioning block 2. The base tire 1 and the positioning block 2 are fixed on a milling machine. A groove 9 is provided on the upper surface of the base tire 1. A plurality of nickel-plated reeds are arranged in the groove 9. The pressure plate 3 is arranged above the base tire 1 and fixed in position by bolts 4. Figure 5 As shown, a slot is opened on one side of the bolt opening of the pressing plate 3, and the bolt 4 is movably connected to the pressing plate 3.

[0020] Specifically, a rubber pressure pad 5 is provided below the pressure plate 3, and the width of the rubber pressure pad 5 is greater than the width of the groove of the bottom tire 1; Figure 4 As shown, a milling platform 7 is provided on one side of the base tire 1, and the height of the milling platform 7 is lower than the groove. Limiting protrusions 8 are provided on both sides of the milling platform 7, and the height of the limiting protrusions 8 is less than the thickness of the nickel-plated reed.

[0021] The groove is provided with a U-shaped opening 6 for picking up the nickel-plated reed. The depth of the groove is adapted to the thickness of the nickel-plated reed. The positioning block 2 abuts against one end of the nickel-plated reed.

[0022] In this embodiment, the fixture is made of 45# steel and heat-treated to ensure hardness and wear resistance. The two reeds that need to be spot welded together are a copper-based nickel-plated reed with a thickness of 2mm and a copper-based nickel-plated reed with a thickness of 0.3mm.

[0023] When in use, first fix the base tire 1 and the positioning block 2 on the operating table of the milling machine with fasteners, screw the bolts into the bolt holes provided on both sides of the base tire 2, but do not tighten them, place 20 copper-based nickel-plated reeds with a thickness of 2mm in the groove 9 opened on the base tire 1, so that one end of the nickel-plated reed abuts one side of the groove 9, and the other end abuts against the positioning block 2. The positioning block 2 can adjust its fixed position on the drilling and milling machine table according to the floating length of the nickel-plated reed. The middle part of the nickel-plated reed is between the two limiting protrusions 8 of the milling table 7, which makes it convenient for the nickel-plated reed to remove the plating in this area using a drilling and milling machine, and also realizes comprehensive limitation of the nickel-plated reed to avoid the shaking of the nickel-plated reed when the milling cutter is removing the plating; after a batch of nickel-plated reeds are placed, the two through slots of the pressure plate 3 are extended into the bolt rod, and the bolt 4 is tightened after it is stuck in a position where it cannot move, further fixing the position of the nickel-plated reed, and leaving the position where spot welding is required outside; a rubber pressure pad 5 is provided under the pressure plate 3. When the bolt 4 is tightened, the rubber pressure pad 5 presses the nickel-plated reed to fix it without damaging the nickel-plated reed.

[0024] After securing the nickel-plated reed, start the milling machine and use the milling cutter to remove the coating from the spot-weld areas of the nickel-plated reed. Remove only the coating from one side (the contact surface with the copper-based nickel-plated reed, which has a thickness of 0.3mm). This will facilitate subsequent spot welding of the two reeds and ensure a secure weld. If the coating is not removed, the two reeds will be spot welded together, resulting in a weak, cold weld.

[0025] After a batch of reeds are milled, the bolt 4 is loosened slightly until the pressure plate can be directly withdrawn without completely removing the bolt, which improves the efficiency of clamping the reeds.

Claims

1. A fixture structure for batch removal of the plating layer in the spot welding area of nickel-plated reeds, characterized by: It includes a base tire, a pressure plate and a positioning block. The base tire and the positioning block are fixed on a milling machine. A groove is provided on the upper surface of the base tire. A plurality of nickel-plated springs are arranged in the groove. The pressure plate is arranged above the base tire and fixed in position by bolts. The bolt opening of the pressure plate is like a through groove on one side, and the bolt is slidably connected to the pressure plate.

2. The fixture structure for batch removing the plating layer from the spot welding area of nickel-plated reeds according to claim 1, characterized in that: A rubber pressure pad is provided below the pressure plate, and the width of the rubber pressure pad is greater than the width of the groove of the bottom tire.

3. The fixture structure for batch removing the plating layer from the spot welding area of nickel-plated reeds according to claim 1, characterized in that: A milling platform is provided on one side of the base tire, the height of the milling platform is lower than the groove, and limiting protrusions are provided on both sides of the milling platform, and the height of the limiting protrusions is less than the thickness of the nickel-plated reed.

4. The fixture structure for batch removing the plating layer from the spot welding area of nickel-plated reeds according to claim 1, characterized in that: The groove is provided with a U-shaped opening for facilitating the picking up of the nickel-plated reed, and the depth of the groove is adapted to the thickness of the nickel-plated reed.

5. The fixture structure for batch removing the plating layer from the spot welding area of nickel-plated reeds according to claim 1, characterized in that: The positioning block abuts against one end of the nickel-plated spring.

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