CN217280729U

CN217280729U - IGBT module DBC aluminum wire binding tool

Info

Publication number: CN217280729U
Application number: CN202221252115.6U
Authority: CN
Inventors: 陈显平; 李博; 李�杰
Original assignee: Chongqing Pingchuang Semiconductor Research Institute Co ltd
Current assignee: Chongqing Pingchuang Semiconductor Research Institute Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-08-23
Anticipated expiration: 2032-05-23

Abstract

The utility model belongs to the technical field of semiconductor production, concretely relates to frock is bound to IGBT module DBC aluminium wire, including the mounting base, the up end of mounting base is the loading face, is provided with the card on the loading face, and the card is fixed on the loading face through card moving mechanism activity, is equipped with the card strip through card strip wabbler mechanism activity on the mounting base, and card strip joint end intersects with the loading face, and DBC is used for the centre gripping on the loading face between card and card strip joint end. The utility model discloses: the distance between the card strip and the card is adjustable in size, and the DBC card can adapt to different sizes. And the adjusting mode is simple, the operation is convenient, and the time is saved. The clamping is firm and is not easy to fall off. The mounting base is stable in mounting, not prone to shaking and suitable for being used in a high-precision machining environment. The mounting base is easy to pick up and can be quickly replaced.

Description

IGBT module DBC aluminum wire binding tool

Technical Field

The utility model belongs to the technical field of semiconductor production, specific is a frock is bound to IGBT module DBC aluminum wire.

Background

In the traditional scheme, in the production process of an Insulated Gate Bipolar Transistor (IGBT), the aluminum wire of a copper-clad ceramic plate DBC is bound, the DBC is placed in a tool plate with an open frame, and the combination of the drawing 1 and the drawing 2 shows that the DBC is pushed into a tool firstly in the installation process, an aluminum push plate locked by a bolt is arranged on the side close to the center of the tool, the DBC is tightly leaned on the aluminum push plate, then a push rod on the outer side of the tool is screwed, and the push plate tightly leaned on the side is pushed to clamp and fix the DBC. Based on the tool, the following defects are found after long-term use:

firstly, each specification of tool can only correspond to one DBC, and specific design is required according to the size of the DBC aiming at different sizes, namely the existing tool is poor in compatibility and high in production cost;

secondly, in the production chain, when the product model is changed, a large amount of time is consumed for replacing the tool; even the DBC of the same model, on the frock, the change after accomplishing at every turn and binding needs elasticity both sides push rod, to the production chain that needs frequent change, take the product on, above-mentioned operation is particularly loaded down with trivial details, waste time, drags the processing progress slowly.

SUMMERY OF THE UTILITY MODEL

The utility model provides a frock is bound to IGBT module DBC aluminum wire to solve the problem that current frock compatibility is poor, manufacturing cost is big, consume time.

In order to achieve the above purpose, the utility model discloses a scheme does: the utility model provides a frock is bound to IGBT module DBC aluminum wire which key technology lies in: the loading device comprises an installation base, wherein the upper end face of the installation base is a loading face, a card is arranged on the loading face, the card is movably fixed on the loading face through a card moving mechanism, a clamping strip is movably arranged on the installation base through a clamping strip swinging mechanism, the clamping end of the clamping strip is intersected with the loading face, and a DBC (direct bus) is clamped on the loading face between the card and the clamping strip clamping end.

Through the design, the card moving mechanism can enable the card to do reciprocating motion on the loading surface, and the card strip can be clamped and loosened by combining the card strip swinging mechanism.

Optionally, the card moving mechanism includes a card fixing bolt, two card platforms and a waist-shaped hole formed in the card, the two card platforms and the loading surface surround to form a card slot, the card is fixed along an extending direction of the card slot, the waist-shaped hole extends along the card slot, and the card fixing bolt passes through the waist-shaped hole and then extends to the loading surface to be connected and fixed.

By adopting the scheme, the clamping piece can reciprocate back and forth along the waist-shaped hole through tightening and loosening the bolt, so that the clamping piece can adapt to DBCs with different sizes.

Optionally, in order to reduce friction between the bolt and the card, the card fixing bolt and the card are also sleeved with a gasket.

Optionally, a clamping strip mounting groove is formed in an edge of the loading surface of the mounting base, and the clamping strip mounting groove penetrates through the loading surface and the side wall of the mounting base;

the clamping strip swinging mechanism comprises a pressing spring and a clamping strip positioning pin; the clamping strip is placed along the clamping strip mounting groove, one end, far away from the clamping end, of the clamping strip is in supporting connection with the mounting base through the pressing spring, and the clamping strip positioning pin penetrates through the middle of the clamping strip to fix the clamping strip between two groove walls of the clamping strip mounting groove;

the clamping end of the clamping strip just extends out from one end, close to the loading surface, of the bottom of the clamping strip mounting groove and is intersected with the loading surface.

By adopting the scheme, one end of the clamping strip connecting spring is supported, and when one end of the clamping strip close to the spring is pressed, the clamping strip is lifted and descended under the action of the clamping strip positioning pin, and the other end of the clamping strip can be lifted and descended.

Optionally, the mounting base is a cylinder as a whole.

Optionally, the lower end surface of the mounting base is provided with a mounting hole, and a magnet is fixed in the mounting hole.

By adopting the scheme, the magnet is combined, the mounting base can be firmly fixed, the production stability is improved, and the high-precision machining is favorably realized.

Optionally, gear teeth are circumferentially provided on the side of the magnet exposed surface.

Adopt above-mentioned scheme, adopt the teeth of a cogwheel and the engaged with mode of the teeth of a cogwheel, can effectively avoid the mounting base to rock along radial to combine the effect of magnet, installation stability obtains further promotion again, and can install the mounting base according to specific installation angle through public female complex mode.

Optionally, at least one rubber column is uniformly distributed on the lower end face of the mounting base.

By adopting the scheme, the rubber column forms a certain gap between the lower end face of the mounting base and the mounting face, so that a worker can conveniently stretch into fingers from the bottom to pick up the whole mounting base. And adopt the rubber material, can effectively avoid the collision.

The working principle and the beneficial effects of the scheme are as follows:

the distance size between card strip and the card is adjustable, and the frock of binding can adapt to different sizes at the DBC. The binding tool is simple in adjustment mode, convenient to operate and time-saving. The binding tool is more firmly clamped with the DBC and is not easy to fall off. The mounting base is stable in mounting, not prone to shaking and suitable for being used in a high-precision machining environment. The mounting base is easy to pick up and can be quickly replaced.

Drawings

FIG. 1 is a front view of a conventional DBC aluminum wire binding tool;

FIG. 2 is a perspective view of a conventional DBC aluminum wire binding tool;

fig. 3 is a first perspective view of a DBC aluminum wire binding tool according to a first embodiment of the present invention;

fig. 4 is a second perspective view of the DBC aluminum wire binding tool according to the first embodiment of the present invention;

fig. 5 is a front view of a DBC aluminum wire binding tool according to a first embodiment of the present invention;

fig. 6 is a side view of a DBC aluminum wire binding tool according to a first embodiment of the present invention;

fig. 7 is a schematic cross-sectional view taken at a-a in fig. 6.

Detailed Description

The following is further detailed by way of specific embodiments:

the reference numbers in the drawings attached hereto include: a mounting base 1; a card 2; a card moving mechanism 3; a card fixing bolt 3 a; a waist-shaped hole 3 b; a chuck table 3 c; a spacer 3 d; a clamping strip swing mechanism 4; a pressing spring 4 a; a strip clamping positioning pin 4 b; a clamping strip 5; a clamping strip mounting groove 6; a mounting hole 7; a magnet 8; a rubber column 9; a push rod 10; a push plate 11; DBC 12.

Example one

The tool for binding the DBC aluminum wire of the IGBT module is shown in figures 3-7 and comprises an installation base 1, wherein the upper end face of the installation base 1 is a loading face, a card 2 is arranged on the loading face, the card 2 is movably fixed on the loading face through a card moving mechanism 3, a card strip 5 is movably arranged on the installation base 1 through a card strip swinging mechanism 4, a clamping end of the card strip 5 is intersected with the loading face, and the DBC is used for clamping the loading face between the card 2 and the clamping end of the card strip 5.

Specifically, in this embodiment, referring to fig. 3, the card moving mechanism 3 includes a card fixing bolt 3a, two clamping platforms 3c and a waist-shaped hole 3b formed in the card 2, the two clamping platforms 3c and the loading surface surround to form a card slot, the card 2 is fixed along the extending direction of the card slot, the waist-shaped hole 3b extends along the card slot, and the card fixing bolt 3a passes through the waist-shaped hole 3b and then extends to the loading surface for connection and fixation. Referring to fig. 3, the card fixing bolt 3a and the card 2 are further sleeved with a washer 3 d.

Specifically, in this embodiment, referring to fig. 7, a clip strip installation groove 6 is formed in an edge of a loading surface of the mounting base 1, and the clip strip installation groove 6 penetrates through the loading surface and a side wall of the mounting base 1; the clamping strip swinging mechanism 4 comprises a pressing spring 4a and a clamping strip positioning pin 4 b; the clamping strip 5 is placed along the clamping strip mounting groove 6, one end, far away from the clamping end, of the clamping strip 5 is in supporting connection with the mounting base 1 through the pressing spring 4a, and the clamping strip positioning pin 4b penetrates through the middle of the clamping strip 5 to fix the clamping strip 5 between two groove walls of the clamping strip mounting groove 6; the clamping end of the clamping strip 5 just extends out from one end of the bottom of the clamping strip mounting groove 6, which is close to the loading surface, and is intersected with the loading surface.

In the present embodiment, referring to fig. 3 and 4, the mounting base 1 is generally cylindrical.

Referring to fig. 4, a mounting hole 7 is formed in the lower end surface of the mounting base, and a magnet 8 is fixed in the mounting hole 7. In the present embodiment, the exposed surface side of the magnet 8 is provided with gear teeth in the circumferential direction.

Referring to fig. 4, 3 rubber columns 9 are uniformly distributed on the lower end face of the mounting base 1.

The utility model discloses the theory of operation:

installation of the DBC:

and obtaining the DBC model size before processing and installation. The card fixing bolt 3a is loosened, the card 2 is moved along the kidney-shaped hole 3b, and the card 2 is moved to a loading space larger than the DBC size on the loading surface of the mounting base 1. The DBC to be processed is placed on the loading surface of the installation base 1, one end of the DBC is close to the clamping strip 5, and the DBC is clamped through pressing the pressing spring 4a connected with the clamping strip 5. The card 2 is close to the DBC along the waist-shaped hole 3b, and then the card 2 is fixed by rotating the card fixing bolt 3a after being clamped. And starting the DBC aluminum wire binding process.

Disassembling the DBC: and (4) disassembling one by one contrary to the mounting step.

The above are merely examples of the present invention, and common general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention. The descriptions in the embodiments and the like in the specification can be used to explain the contents of the claims.

Claims

1. The utility model provides a frock is bound to IGBT module DBC aluminium wire which characterized in that: including mounting base (1), the up end of this mounting base (1) is the loading face, is provided with card (2) on this loading face, and this card (2) are fixed through card moving mechanism (3) activity on the loading face, be equipped with card strip (5) through card strip wabbler mechanism (4) activity on mounting base (1), this card strip (5) joint end with the loading face is crossing, and DBC is used for the centre gripping card (2) with on the loading face between card strip (5) joint end.

2. The tool for binding the DBC aluminum wire of the IGBT module according to claim 1, wherein: card moving mechanism (3) include card fixing bolt (3a), two card platforms (3c) and set up waist shape hole (3b) on card (2), two card platform (3c) and loading face surround and form the card draw-in groove, card (2) are followed card draw-in groove extending direction is fixed, waist shape hole (3b) are followed the card draw-in groove extends to be seted up, card fixing bolt (3a) pass waist shape hole (3b) after stretch to the loading face is connected fixedly.

3. The tool for binding the DBC aluminum wire of the IGBT module according to claim 2, characterized in that: the card fixing bolt (3a) and the card (2) are also sleeved with a gasket (3 d).

4. The tool for binding the DBC aluminum wire of the IGBT module according to claim 1 or 2, characterized in that: a clamping strip mounting groove (6) is formed in the edge of the loading surface of the mounting base (1), and the clamping strip mounting groove (6) penetrates through the loading surface and the side wall of the mounting base (1);

the clamping strip swinging mechanism (4) comprises a pressing spring (4a) and a clamping strip positioning pin (4 b); the clamping strip (5) is placed along the clamping strip mounting groove (6), one end, far away from a clamping end, of the clamping strip (5) is in supporting connection with the mounting base (1) through the pressing spring (4a), and the clamping strip positioning pin (4b) penetrates through the middle of the clamping strip (5) to fix the clamping strip (5) between two groove walls of the clamping strip mounting groove (6);

the clamping end of the clamping strip (5) just extends out of one end, close to the loading surface, of the bottom of the clamping strip mounting groove (6) and is intersected with the loading surface.

5. The tool for binding the DBC aluminum wire of the IGBT module according to claim 1, wherein: the mounting base (1) is integrally cylindrical.

6. The tool for binding the DBC aluminum wire of the IGBT module according to claim 5, wherein: the lower end face of the mounting base is provided with a mounting hole (7), and a magnet (8) is fixed in the mounting hole (7).

7. The tool for binding the DBC aluminum wire of the IGBT module according to claim 6, wherein: and gear teeth are circumferentially arranged on the exposed surface side of the magnet (8).

8. The tool for binding the DBC aluminum wire of the IGBT module according to claim 5, wherein: at least one rubber column (9) is uniformly distributed on the lower end face of the mounting base (1).