Wafer expanding ring fixing clamp

Abstract

The utility model relates to the technical field of laser chip accommodating ring clamps, in particular to a wafer expanding ring fixing clamp, which comprises a bottom shell and a movable pin connected onto the bottom shell in a sliding manner, a spring is connected between the bottom shell and the movable pin; the spring presses the movable pin on the inner side wall of the bottom shell; a positioning slope is arranged between the side, away from the spring, of the movable pin and the bottom surface of the movable pin. After the clamp is used, the wafer expanding ring is not easy to jump when being touched by mistake, and the positioning accuracy of a chip on the wafer expanding ring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser chip receiving ring clamps, in particular to a crystal expansion ring fixing clamp. Background Art

[0002] In current laser chip testers, each expansion ring has three auxiliary positioning pins to assist in positioning. However, this auxiliary positioning method has drawbacks. When removing the expansion ring protective film or performing tester inspections, the ring may be touched, causing it to jump upward along the positioning pins. This can cause the chip placement to deviate from the original position, leading to chip placement errors and, in severe cases, chip loss and scrapping.

[0003] Therefore, it is necessary to further innovate the existing wafer expansion ring fixing structure. Utility Model Content

[0004] The purpose of the utility model is to provide a wafer expansion ring fixing fixture to address the defects and shortcomings of the existing technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model describes a crystal expansion ring fixing fixture, which includes a bottom shell and a movable pin slidably connected to the bottom shell; a spring is connected between the bottom shell and the movable pin; the spring presses the movable pin against the inner wall of the bottom shell; a positioning inclined surface is provided between the side of the movable pin away from the spring and the bottom surface of the movable pin.

[0007] Furthermore, a sliding block is provided on the movable pin; at least one guide shaft is fixed inside the bottom shell; a guide hole is provided on the sliding block for sliding connection with the guide shaft; the number of the guide shafts is equal to the number of the guide holes; the guide shafts pass through the guide holes respectively; the spring is sleeved outside the guide shaft; the two ends of the spring are respectively pressed against the inner side wall of the bottom shell and the sliding block.

[0008] Furthermore, a handle is provided on the movable pin at a side away from the positioning inclined surface.

[0009] Furthermore, connecting plates are provided on both the left and right sides of the bottom shell; and threaded holes are provided on the connecting plates.

[0010] Furthermore, the angle between the length direction of the guide hole and the positioning inclined surface is an inclination angle; and the inclination angle is 30-65°.

[0011] Furthermore, a rounded surface is provided between the top surface of the movable pin and the positioning inclined surface.

[0012] After adopting the above structure, the beneficial effects of the utility model are as follows: any auxiliary positioning pin on the platform used to fix the crystal expansion ring is replaced with the crystal expansion ring fixing clamp of the present application; the crystal expansion ring is pressed against the positioning bevel of the movable pin, and the spring provides an elastic pressing force to the movable pin, so that the positioning bevel presses against the edge of the crystal expansion ring; the downward-sloping positioning bevel can provide lateral pressure and downward pressing force for the crystal expansion ring, and the lateral pressure presses the crystal expansion ring against the two auxiliary positioning pins, so that the crystal expansion ring is positioned in the horizontal direction; and the positioning bevel generates a vertical downward component force on the crystal expansion ring to press the crystal expansion ring downward. After using this clamp, the crystal expansion ring is less likely to jump when it is accidentally touched, thereby improving the positioning accuracy of the chip on the crystal expansion ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a three-dimensional diagram of the movable pin;

[0016] Figure 4 It is the main view of the movable pin;

[0017] Description of reference numerals:

[0018] 1. Movable pin; 101. Handle; 102. Positioning ramp; 103. Sliding block; 103a. Guide hole;

[0019] 104, fillet surface; 2, bottom shell; 201, opening slot; 202, connecting plate; 202a, threaded hole;

[0020] 3. Guide shaft; 4. Spring. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figures 1 to 4 As shown, the wafer expansion ring fixing fixture of the present invention includes a bottom shell 2 and a movable pin 1 slidably connected to the bottom shell 2; a spring 4 is connected between the bottom shell 2 and the movable pin 1; the spring 4 presses the movable pin 1 against the inner side wall of the bottom shell 2; a positioning inclined surface 102 is provided between the side of the movable pin 1 away from the spring 4 and the bottom surface of the movable pin 1;

[0023] Any auxiliary positioning pin on the platform used to fix the crystal expansion ring is replaced with the crystal expansion ring fixing fixture of the present application; the crystal expansion ring is pressed against the positioning bevel 102 of the movable pin 1, and the spring 4 provides an elastic pressing force to the movable pin 1, so that the positioning bevel 102 presses against the edge of the crystal expansion ring; the downward-sloping positioning bevel 102 can provide lateral pressure and downward pressing force for the crystal expansion ring, and the lateral pressure presses the crystal expansion ring against the two auxiliary positioning pins, so that the crystal expansion ring is positioned in the horizontal direction; and the positioning bevel 102 generates a vertical downward component force on the crystal expansion ring to press the crystal expansion ring downward. After using this fixture, the crystal expansion ring is not prone to jumping when it is accidentally touched, thereby improving the positioning accuracy of the chip on the crystal expansion ring.

[0024] As a preferred embodiment of the present invention, a sliding block 103 is provided on the movable pin 1; at least one guide shaft 3 is fixed inside the bottom shell 2; a guide hole 103a is provided on the sliding block 103, which is slidably connected to the guide shaft 3; the number of the guide shafts 3 is equal to the number of the guide holes 103a; the guide shafts 3 pass through the guide holes 103a respectively; the spring 4 is sleeved on the outside of the guide shaft 3; the two ends of the spring 4 are respectively pressed against the inner side wall of the bottom shell 2 and the sliding block 103; an open groove 201 is provided on the bottom shell 2 for the sliding block 103 to extend outward; it is connected with the guide shaft 3 through the guide hole 103a, so that the movable pin 1 can slide in a direction on the bottom shell 2.

[0025] As a preferred embodiment of the present invention, a handle 101 is provided on the movable pin 1 at a side away from the positioning inclined surface 102 .

[0026] As a preferred embodiment of the present invention, connecting plates 202 are provided on both sides of the bottom shell 2; threaded holes 202a are provided on the connecting plates 202; the bottom shell 2 is locked and fixed on the workbench by passing the head bolts through the through holes of the workbench and connecting with the threaded holes 202a, thereby realizing a detachable connection between the clamp and the workbench.

[0027] As a preferred embodiment of the present invention, the angle between the length direction of the guide hole 103a and the positioning slope 102 is an inclination angle; the inclination angle is 30-65°; the inclination angle α can be 30°, 35°, 40°, 45°, 50°, 55°, 60° and 65°.

[0028] As a preferred embodiment of the present invention, a rounded surface 104 is provided between the top surface of the movable pin 1 and the positioning inclined surface 102; the rounded surface 104 can prevent scratches when the wafer expansion ring is taken in and out.

[0029] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A wafer expansion ring fixing fixture, characterized by: It comprises a bottom shell (2) and a movable pin (1) slidably connected to the bottom shell (2); a spring (4) is connected between the bottom shell (2) and the movable pin (1); the spring (4) presses the movable pin (1) against the inner side wall of the bottom shell (2); and a positioning inclined surface (102) is provided between the side of the movable pin (1) away from the spring (4) and the bottom surface of the movable pin (1).

2. The wafer expansion ring fixing fixture according to claim 1, characterized in that: A sliding block (103) is provided on the movable pin (1); at least one guide shaft (3) is fixed inside the bottom shell (2); a guide hole (103a) is provided on the sliding block (103) and is slidably connected to the guide shaft (3); the number of the guide shafts (3) is equal to the number of the guide holes (103a); the guide shafts (3) pass through the guide holes (103a) respectively; the spring (4) is sleeved outside the guide shaft (3); and the two ends of the spring (4) are respectively pressed against the inner side wall of the bottom shell (2) and the sliding block (103).

3. The wafer expansion ring fixing fixture according to claim 1, wherein: A handle (101) is provided on the movable pin (1) on a side away from the positioning inclined surface (102).

4. The wafer expansion ring fixing fixture according to claim 1, characterized in that: Connecting plates (202) are provided on both the left and right sides of the bottom shell (2); threaded holes (202a) are provided on the connecting plates (202).

5. The wafer expansion ring fixing fixture according to claim 2, characterized in that: The angle between the length direction of the guide hole (103a) and the positioning inclined surface (102) is an inclination angle; the inclination angle is 30-65°.

6. The wafer expansion ring fixing fixture according to claim 1, characterized in that: A rounded surface (104) is provided between the top surface of the movable pin (1) and the positioning inclined surface (102).

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