Bilateral positioning mechanism

Abstract

The utility model discloses a bilateral positioning mechanism which comprises a bottom plate, a measuring hole is formed in the middle of the bottom plate, and supporting blocks are arranged at the four corners of the measuring hole. An X-direction positioning edge is fixed on one side of the measuring hole in the length direction, and an X-direction clamping mechanism opposite to the X-direction positioning edge is arranged on the other side of the measuring hole in the length direction; a Y-direction positioning edge is fixed on one side of the width direction of the measuring hole, and a Y-direction clamping mechanism opposite to the Y-direction positioning edge is arranged on the other side of the width direction of the measuring hole. According to the utility model, the IGBT is placed on the supporting block, the long edge of the IGBT is positioned through the X-direction clamping mechanism, and then the short edge of the IGBT is positioned through the Y-direction clamping mechanism, so that the positioning precision of the IGBT can be improved; the problem of module upwarp caused by asynchronous X-direction and Y-direction positioning of the IGBT is reduced, and the repeated positioning precision of IGBT arching measurement is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning equipment, in particular to a bilateral positioning mechanism. Background Art

[0002] Insulated gate bipolar transistor is a composite fully controlled voltage-driven power semiconductor device composed of bipolar transistor and insulated gate field effect transistor, which has the advantages of high input impedance of MOSFET and low on-state voltage drop of GTR. With the development of IGBT industry and the increasing demand for automation, IGBT needs to measure the curvature of the bottom surface of the module through a measuring machine, but the current XY synchronous positioning method of IBGT will cause the module to warp, affecting the repeat positioning accuracy. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a bilateral positioning mechanism, including a bottom plate, a measuring hole is opened in the middle of the bottom plate, and support blocks are arranged at the four corners of the measuring hole;

[0004] An X-direction positioning edge is fixed on one side of the measuring hole in the length direction, and an X-direction clamping mechanism is arranged opposite to the X-direction positioning edge on the other side of the measuring hole in the length direction;

[0005] A Y-direction positioning edge is fixed on one side of the measuring hole in the width direction, and a Y-direction clamping mechanism is arranged opposite to the Y-direction positioning edge on the other side of the measuring hole in the width direction.

[0006] Preferably, two positioning edge grooves are provided at the front end of the X-direction positioning edge.

[0007] Preferably, rotatable X-axis positioning balls are arranged in the two positioning edge grooves.

[0008] Preferably, the X-direction clamping mechanism comprises an X-direction push head, and the rear end of the X-direction push head is connected to the push rod.

[0009] Preferably, two push rods are provided, and both push rods are slidably connected to the X-axis support seat.

[0010] Preferably, the X-axis support seat is fixed on the bottom plate, and the rear ends of the two push rods are fixedly connected to the X-axis power connecting rod.

[0011] Preferably, the X-axis power connecting rod can be pushed manually or connected to a pneumatic cylinder or an electric cylinder to drive the X-axis power connecting rod to move forward and backward.

[0012] Preferably, two push head grooves are arranged at the front end of the X-axis clamping mechanism, and rotatable push head balls are arranged in the two push head grooves.

[0013] Preferably, the Y-direction clamping mechanism comprises a Y-direction push head, the Y-direction push head is connected to a Y-direction power connecting rod, and the Y-direction power connecting rod is movably connected to a Y-direction supporting seat.

[0014] Preferably, the Y-axis power connecting rod is slidably connected to the Y-axis support seat, and the Y-axis power connecting rod is manually pushed or connected to a cylinder or an electric cylinder to drive the Y-axis power connecting rod to move forward and backward.

[0015] Technical effects and advantages of the utility model:

[0016] In the utility model, the IGBT is placed on the supporting block, the long side of the IGBT is first positioned by the X-axis clamping mechanism, and then the short side of the IGBT is positioned by the Y-axis clamping mechanism, which can improve the positioning accuracy of the IGBT, reduce the problem of module warping caused by asynchronous X and Y-axis positioning of the IGBT, and effectively improve the repeated positioning accuracy of the IGBT arch measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the bilateral positioning mechanism provided in the embodiment of the present application;

[0018] Figure 2 It is a schematic diagram of the structure of the bilateral positioning mechanism provided in the embodiment of the present application after the IGBT is removed;

[0019] Figure 3 The bilateral positioning mechanism provided in the embodiment of the present application Figure 2 A schematic diagram of the structure enlargement at the center A;

[0020] Figure 4 It is a structural schematic diagram of the X-axis clamping mechanism in the bilateral positioning mechanism provided in an embodiment of the present application.

[0021] In the figure: 1. bottom plate; 11. measuring hole; 2. X-direction positioning edge; 21. positioning edge groove; 22. X-direction positioning ball; 3. X-direction clamping mechanism; 31. X-direction push head; 311. push head groove; 32. push rod; 33. X-direction support seat; 34. X-direction power connecting rod; 35. push head ball; 4. Y-direction positioning edge; 5. Y-direction clamping mechanism; 51. Y-direction push head; 52. Y-direction power connecting rod; 53. Y-direction support seat; 6. support block. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figure 1-3 As shown, in this embodiment, a bilateral positioning mechanism is provided, including a base plate 1, a measuring hole 11 is opened in the middle of the base plate 1, support blocks 6 are arranged at the four corners of the measuring hole 11, the support blocks 6 are used to support IGBT (insulated gate bipolar transistor), an X-direction positioning edge 2 is fixed on one side of the measuring hole 11 in the length direction, an X-direction clamping mechanism 3 is arranged opposite to the X-direction positioning edge 2 on the other side of the measuring hole 11 in the length direction, a Y-direction positioning edge 4 is fixed on one side of the measuring hole 11 in the width direction, and a Y-direction clamping mechanism 5 is arranged opposite to the Y-direction positioning edge 4 on the other side of the measuring hole 11 in the width direction.

[0024] Specifically, the IGBT is placed on the support block 6, with the long side of the IGBT in the X direction and the short side in the Y direction. The long side of the IGBT is first positioned by the X-direction clamping mechanism 3, and then the short side of the IGBT is positioned by the Y-direction clamping mechanism 5. This can improve the positioning accuracy of the IGBT, reduce the problem of module warping caused by asynchronous X and Y-direction positioning of the IGBT, and effectively improve the repeated positioning accuracy of the IGBT arch measurement.

[0025] In this embodiment, two positioning edge grooves 21 are provided at the front end of the X-direction positioning edge 2 , and rotatable X-direction positioning balls 22 are provided in each of the positioning edge grooves 21 .

[0026] In this embodiment, see Figure 3 As shown, the X-axis clamping mechanism 3 includes an X-axis push head 31, the rear end of the X-axis push head 31 is connected to a push rod 32, two push rods 32 are provided, both push rods 32 are slidably connected to an X-axis support seat 33, the X-axis support seat 33 is fixed on the base plate 1, and the rear ends of the two push rods 32 are fixedly connected to an X-axis power connecting rod 34.

[0027] In this embodiment, the X-direction power connecting rod 34 can be pushed manually, and can also be connected to a pneumatic cylinder or an electric cylinder to drive the X-direction power connecting rod 34 to move forward and backward.

[0028] For further information, see Figure 4As shown, two push head grooves 311 are provided at the front end of the X-axis clamping mechanism 3, and rotatable push head balls 35 are provided in the two push head grooves 311. When in use, the X-axis power connecting rod 34 moves forward, pushing the push rod 32 to move along the X-axis support seat 33, and the X-axis push head 31 moves forward. The two push head balls 35 are clamped on the long side of the IGBT, and the short side of the IGBT is still in a free state.

[0029] In this embodiment, see Figure 2 As shown, the Y-direction clamping mechanism 5 includes a Y-direction push head 51, which is connected to a Y-direction power connecting rod 52. The Y-direction power connecting rod 52 is movably connected to a Y-direction support seat 53. The Y-direction power connecting rod 52 is used to adjust the forward and backward movement of the Y-direction push head 51 to achieve the positioning of the short side of the IGBT.

[0030] In one embodiment, the Y-direction power connecting rod 52 is slidably connected to the Y-direction support seat 53. The Y-direction power connecting rod 52 can be pushed manually, or connected to a cylinder or an electric cylinder to drive the Y-direction power connecting rod 52 to move forward and backward.

[0031] In another embodiment, the Y-direction power connecting rod 52 is threadedly connected to the Y-direction support seat 53, and the Y-direction power connecting rod 52 is connected to the servo motor. The servo motor drives the Y-direction power connecting rod 52 to move forward and backward along the Y-direction support seat 53, driving the Y-direction push head 51 to move forward and backward.

[0032] The working principle of the utility model is:

[0033] When in use, place the IGBT on the support block 6, first push the X-direction power connecting rod 34, drive the push rod 32 and the X-direction push head 31 to move, and the two push head balls 35 are clamped on the long side of the IGBT, then drive the Y-direction power connecting rod 52, and the Y-direction push head 51 is clamped on the short side of the IGBT to achieve the positioning of the IGBT.

[0034] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A bilateral positioning mechanism, characterized in that: It comprises a bottom plate (1), a measuring hole (11) is provided in the middle of the bottom plate (1), and support blocks (6) are provided at the four corners of the measuring hole (11); An X-direction positioning edge (2) is fixed on one side of the measuring hole (11) in the length direction, and an X-direction clamping mechanism (3) is arranged opposite to the X-direction positioning edge (2) on the other side of the measuring hole (11) in the length direction; A Y-direction positioning edge (4) is fixed on one side of the measuring hole (11) in the width direction, and a Y-direction clamping mechanism (5) is arranged opposite to the Y-direction positioning edge (4) on the other side of the measuring hole (11) in the width direction.

2. A bilateral positioning mechanism according to claim 1, characterized in that: Two positioning edge grooves (21) are provided at the front end of the X-direction positioning edge (2).

3. A bilateral positioning mechanism according to claim 2, characterized in that: Rotatable X-direction positioning balls (22) are arranged in the two positioning edge grooves (21).

4. A bilateral positioning mechanism according to claim 1, characterized in that: The X-direction clamping mechanism (3) comprises an X-direction push head (31), and the rear end of the X-direction push head (31) is connected to a push rod (32).

5. A bilateral positioning mechanism according to claim 4, characterized in that: Two push rods (32) are provided, and both push rods (32) are slidably connected to the X-axis support seat (33).

6. A bilateral positioning mechanism according to claim 5, characterized in that: The X-direction support seat (33) is fixed on the bottom plate (1), and the rear ends of the two push rods (32) are fixedly connected to the X-direction power connecting rod (34).

7. A bilateral positioning mechanism according to claim 6, characterized in that: The X-direction power connecting rod (34) can be manually pushed or connected to a pneumatic cylinder or an electric cylinder to drive the X-direction power connecting rod (34) to move forward and backward.

8. A bilateral positioning mechanism according to claim 1, characterized in that: The front end of the X-direction clamping mechanism (3) is provided with two push head grooves (311), and rotatable push head balls (35) are arranged in the two push head grooves (311).

9. A bilateral positioning mechanism according to claim 1, characterized in that: The Y-direction clamping mechanism (5) comprises a Y-direction push head (51), the Y-direction push head (51) is connected to a Y-direction power connecting rod (52), and the Y-direction power connecting rod (52) is movably connected to a Y-direction supporting seat (53).

10. A bilateral positioning mechanism according to claim 9, characterized in that: The Y-direction power connecting rod (52) is slidably connected to the Y-direction supporting seat (53), and the Y-direction power connecting rod (52) is manually pushed or connected to a cylinder or an electric cylinder to drive the Y-direction power connecting rod (52) to move forward and backward.

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