Contactor ceramic brazing clamp

Abstract

The utility model discloses a contactor ceramic brazing clamp which comprises a base, a limiting sleeve, a pressing column, a pressing plate, a limiting piece and a guide column. The limiting sleeve is arranged in the base, the pressing column penetrates through the pressing plate, the limiting piece is arranged below the pressing plate, the guide column is connected with the base, and the pressing plate is connected with the guide column in a sliding mode. According to the utility model, the air tightness leakage rate of the seat plate assembly after vacuum brazing can be ensured, and various size requirements of the seat plate assembly can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of brazing, and in particular relates to a contactor ceramic brazing fixture. Background Art

[0002] like Figure 3 As shown in the figure, a contactor base plate assembly is composed of a ceramic base plate, a Kovar alloy transition ring, a Kovar alloy terminal, and an oxygen-free copper conductive block. Since the base plate assembly is composed of parts of various materials welded together, the airtightness leakage rate and various dimensional requirements have not been met. Therefore, it is necessary to design a brazing fixture to ensure that qualified components are welded and the scraping pass rate is guaranteed.

[0003] For example, the Chinese patent with the publication number CN115213520A discloses a fixture for brazing of flat-packaged ceramic shells, which belongs to the technical field of brazing auxiliary devices. The fixture includes a base, an intermediate plate and a cover plate. The base is provided with a placement groove for placing a lead frame; the intermediate plate is provided with a positioning groove for placing a lead frame, and the positioning groove is provided with a positioning hole for placing a ceramic body with a cavity facing downward and positioning the outer periphery of the ceramic body. The positioning hole passes through the intermediate plate from top to bottom and corresponds to the placement groove on the base from top to bottom, so that the end face of the ceramic body can contact the lead frame. The positioning groove is also provided with a limiting step for limiting the extended leg of the welding piece; the bottom of the cover plate is provided with a first boss for extending into the positioning groove and pressing the welding leg of the lead and the extended leg of the welding piece. However, the patent does not provide guide pillars, limiting sleeves and limiting plates, and does not provide counterweights. It is not suitable for contactor base plates and cannot make the various parts of the contactor base plate tightly combined.

[0004] For example, a Chinese patent with publication number CN220240271U discloses an integrated brazing fixture, including a placement table, the side of which is connected to a support plate, the side of which is connected to a catheter brazing mold, a circular hole is provided on the catheter brazing mold, a plug rod is inserted into the circular hole; the top of the catheter brazing mold is connected to a brazing upper mold; both sides of the placement table are provided with a brazing abutment mold, and a cavity is formed between the placement table and the brazing abutment mold. The utility model supports the components of the optical communication ceramic tube shell through a fixture, fixes the positions of the components of the workpiece, realizes the function of welding the components at one time, solves the problem of welding one by one, causing the already welded solder to melt during the second welding, causing the components to shift, and improves the welding efficiency by welding once. However, the patent is provided with an L-shaped structure and a catheter structure, and is not provided with a counterweight, a guide column, a limit sleeve and a limit plate, and is also not applicable to the contactor bottom plate. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a contactor ceramic brazing fixture.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a contactor ceramic brazing fixture, comprising a base, a limiting sleeve, a pressure column, a pressure plate, a limiting piece and a guide column; the limiting sleeve is arranged in the base, the pressure column passes through the pressure plate, the limiting piece is arranged below the pressure plate, the guide column is connected to the base, and the pressure plate is slidably connected to the guide column.

[0008] Preferably, it also includes counterweight block A, counterweight block B and counterweight block C; the counterweight block A and counterweight block C are arranged above the pressure plate, the counterweight block A and counterweight block C are respectively connected to the pressure column, and the counterweight block B is sleeved with the counterweight block A and the counterweight block C.

[0009] Preferably, a through groove, a round socket and a countersunk hole are provided in the base, and the limiting sleeve is provided in the countersunk hole.

[0010] Preferably, screws are provided on the base.

[0011] Preferably, a guide hole A is provided on the base, and the guide column is connected to the base via the guide hole A; a guide hole B is provided on the pressure plate, and the pressure plate is slidably connected to the guide column via the guide hole B.

[0012] Preferably, a limiting recess is provided on the limiting plate.

[0013] A contactor ceramic brazing fixture as claimed in claim 1, characterized in that the limiting sleeve is a hollow cylinder.

[0014] Preferably, the guide column is a cylinder with one end being thicker and the other end being thinner, and a chamfer is provided on the cylinder.

[0015] Preferably, the pressure column is a cylinder with one end being thicker and the other end being thinner, and the thinner end of the cylinder is provided with a chamfer.

[0016] Preferably, the limiting sleeve and the limiting plate are made of stainless steel, and the surface is blackened.

[0017] The beneficial effects of the utility model are:

[0018] 1. Positioning is done through the base, and limit plates, limit sleeves and guide columns are set at the same time to ensure the accuracy of the fixture hole position; a counterweight block is set, and the parts on the ceramic seat plate can be closely connected through the pressure plate and pressure column.

[0019] 2. The welding fixture can ensure that the airtightness leakage rate of the seat plate assembly after vacuum brazing is ≤5×10-9Pa.m3 / s, and can ensure the various dimensional requirements of the seat plate assembly. After repeated verification, the use of this fixture has greatly improved the qualification rate of the ceramic seat plate assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front structural schematic diagram provided by an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the top view structure of a non-counterweight block C provided in an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the contactor ceramic base plate structure;

[0023] Figure 4 It is a schematic diagram of the base structure provided by an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the pressing plate provided by the embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the guide column structure provided by an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the structure of the limiting piece provided in the embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of the pressure column structure provided by an embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of the structure of the limit sleeve provided in the embodiment of the utility model;

[0029] Fig.10 It is a structural schematic diagram of a counterweight block A provided in an embodiment of the utility model;

[0030] Fig.11 It is a schematic diagram of the structure of the counterweight block C provided in the embodiment of the utility model;

[0031] Fig.12 It is a schematic diagram of the structure of the counterweight block B provided in an embodiment of the utility model.

[0032] In the figure: 1-base, 2-limiting sleeve, 3-pressure column, 4-counterweight A, 5-counterweight B, 6-pressure plate, 7-limiting piece, 8-screw, 9-guide column, 10-counterweight C, 11-through groove, 12-round socket, 13-counterbore, 14-guide hole A, 15-guide hole B, 16-limiting socket, 17-conductive block, 18-transition ring, 19-ceramic seat plate, 20-transition ring. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0034] like Figure 1 , 2As shown, a contactor ceramic brazing fixture includes a base 1, a limit sleeve 2, a pressure column 3, a pressure plate 6, a limit sheet 7 and a guide column 9; the limit sleeve 2 is arranged in the base 1, the pressure column 3 passes through the pressure plate 6, the limit sheet 7 is arranged below the pressure plate 6, the guide column 9 is connected to the base 1, and the pressure plate 6 is slidably connected to the guide column 9.

[0035] In this embodiment, the main parts such as the base 1, the guide column 9, the pressure plate 6, the pressure column 3, etc. are all made of Cr12MoV, mainly to make the clamp wear-resistant and not easy to deform at high temperatures.

[0036] like Fig.10 , 11 As shown in 12, it also includes a counterweight block A4, a counterweight block B5 and a counterweight block C10; the counterweight block A4 and the counterweight block C10 are arranged above the pressure plate 6, the counterweight block A4 and the counterweight block C10 are respectively connected to the pressure column 3, and the counterweight block B5 is sleeved with the counterweight block A4 and the counterweight block C10.

[0037] like Figure 3 As shown, the contactor base plate assembly consists of a ceramic base plate, a transition ring, a terminal, and a conductive block.

[0038] Because the weight of the pressure column 3 is not enough to press the terminal against the ceramic base plate when the solder melts, counterweight blocks A4 and C10 are added.

[0039] After the counterweights 1 and 3 are inserted from the small end of the pressure column 3, the counterweights A4 and C10 are pressed on the step of the pressure column 3, and finally the counterweight B5 is put on the counterweights A4 and C10. The counterweight B5 effectively controls the counterweights A4 and C10 not to tilt to either side. At the same time, the weight of the three counterweights presses each terminal down against the ceramic base plate. Thus, the clamping and positioning of the parts are completed.

[0040] like Figure 4 As shown, a through groove 11 , a round socket 12 and a countersunk hole 13 are provided in the base 1 , and the limiting sleeve 2 is provided in the countersunk hole 13 .

[0041] In this embodiment, the width of the through groove 11 is slidably matched with the width of the lower end of the conductive block, and a round socket 12 is provided. The number of countersunk holes 13 corresponds to the number of terminal posts. The hole spacing between each countersunk hole 13 is consistent with the hole spacing between each hole on the ceramic base plate, and the inner hole size of the limit sleeve 2 is slidably matched with the size of the terminal post.

[0042] The lower end of each terminal is sunk into each round hole of the limit sleeve 2 on the base 1 through the ceramic base plate, thereby limiting the position and size between the terminals. Then, the pressure plate 6 is inserted along the two guide pillars, and the pressure plate 6 presses the limit plate 7 downward along the guide pillar 3 due to its own weight, thereby pressing the ceramic base plate and the transition ring.

[0043] The ceramic base plate is placed into the transition ring and then into the circular socket 12 of the base to define its position. The conductive block and each terminal are placed into the corresponding circular holes of the ceramic base plate. The lower end of the conductive block passes through the ceramic base plate and sinks into the through groove 11 of the base. The width of the through groove 11 is just enough to limit the left and right movement of the conductive block.

[0044] The base 1 is provided with screws 8 .

[0045] The screw 8 is a standard part, and its length can be changed at any time. It is used to assist in adjusting the position between the two conductive blocks and also serves as a handle when lifting and placing the clamp.

[0046] like Figure 5 As shown, the base 1 is provided with a guide hole A14, and the guide column 9 is connected to the base 1 through the guide hole A14; the pressing plate 6 is provided with a guide hole B15, and the pressing plate 6 is slidably connected to the guide column 9 through the guide hole B15.

[0047] like Figure 7 As shown, a limiting recess 16 is provided on the limiting piece 7 .

[0048] In this embodiment, two limiting sockets 16 are provided on the limiting plate 7. The inner diameter of the limiting socket 16 is slidably matched with the outer diameter of the conductive block, and the hole pitch is consistent with the position of the conductive block, thereby ensuring the distance between the two conductive blocks.

[0049] The limiting sleeve 2 is a hollow cylinder.

[0050] like Figure 6 As shown, the guide column 9 is a cylinder with one end being thicker and the other end being thinner, and a chamfer is provided on the cylinder.

[0051] The thinner end of the guide column 9 is inserted into the guide hole A14, and the connection with the base 1 is more stable; the thicker end is slidably connected to the pressure plate 6 through the guide hole B15, so that the pressure plate 6 is not easy to slip off the guide column 9, and the reliability is stronger; a chamfer is provided to facilitate insertion into the guide hole.

[0052] Here, the use of the guide pillars 9 links the base plate 1 and the pressure plate 6 into a whole, and ensures the consistency of the positions of the holes on the pressure plate 6 and the base plate 1.

[0053] like Figure 8 As shown, the pressure column 3 is a cylinder with a thicker end and a thinner end, and the thinner end of the cylinder is provided with a chamfer.

[0054] The thinner end of the pressure column 3 is connected to the pressure plate 6, and the thinner end is provided with a chamfer to facilitate the connection with the pressure plate 6; the thicker end is pressed on the part terminal, and the terminal is pressed downward on the ceramic base plate by the weight of three counterweights.

[0055] like Fig. 9As shown, the limiting sleeve 2 and the limiting sheet 7 are made of stainless steel, and the surface is blackened to prevent the stainless steel from being easily welded and adhered to other materials after blackening.

[0056] The utility model uses the base 1 as the positioning part of the entire fixture. The pressure plate 6 presses the limit plate 7 downward along the guide column 9 due to its own weight, thereby pressing the ceramic seat plate and the transition ring. The pressure column 3 presses on the terminal, and the terminal is pressed downward on the ceramic seat plate by the weight of three counterweights. After the various parts are placed in the fixture, they are put into a vacuum furnace together for heating and welding.

[0057] The utility model is a welding fixture for welding a contactor seat plate assembly, which can ensure that the airtightness leakage rate of the seat plate assembly after vacuum brazing is ≤5×10-9Pa.m3 / s, and can ensure various dimensional requirements of the seat plate assembly. After repeated verification, the use of the fixture has greatly improved the qualified rate of the ceramic seat plate assembly.

Claims

1. A contactor ceramic brazing fixture, It is characterized in that The invention comprises a base (1), a limiting sleeve (2), a pressure column (3), a pressure plate (6), a limiting piece (7) and a guide column (9); the limiting sleeve (2) is arranged in the base (1), the pressure column (3) passes through the pressure plate (6), the limiting piece (7) is arranged below the pressure plate (6), the guide column (9) is connected to the base (1), and the pressure plate (6) is slidably connected to the guide column (9).

2. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The invention also comprises a counterweight block A (4), a counterweight block B (5) and a counterweight block C (10); the counterweight block A (4) and the counterweight block C (10) are arranged above the pressure plate (6); the counterweight block A (4) and the counterweight block C (10) are respectively connected to the pressure column (3); and the counterweight block B (5) is sleeved with the counterweight block A (4) and the counterweight block C (10).

3. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that A through groove (11), a round socket (12) and a countersunk hole (13) are arranged in the base (1), and the limiting sleeve (2) is arranged in the countersunk hole (13).

4. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The base (1) is provided with screws (8).

5. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The base (1) is provided with a guide hole A (14), and the guide column (9) is connected to the base (1) via the guide hole A (14); the pressing plate (6) is provided with a guide hole B (15), and the pressing plate (6) is slidably connected to the guide column (9) via the guide hole B (15).

6. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The limiting piece (7) is provided with a limiting recess (16).

7. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The limiting sleeve (2) is a hollow cylinder.

8. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The guide column (9) is a cylinder with a thicker end and a thinner end, and a chamfer is arranged on the cylinder.

9. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The pressure column (3) is a cylinder with one end being thicker and the other end being thinner, and the thinner end of the cylinder is provided with a chamfer.

10. A contactor ceramic brazing fixture as claimed in claim 1, It is characterized in that The limiting sleeve (2) and the limiting plate (7) are made of stainless steel, and the surface is blackened.

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