Sintering jig for copper-clad ceramic substrate

Abstract

The utility model belongs to the technical field of ceramic substrate processing, and discloses a copper-clad ceramic substrate sintering jig which comprises a carrier plate, main sliding grooves are formed in the two sides of the middle of the carrier plate, racks are arranged on the inner walls of the two sides of the middle end in each main sliding groove, a main supporting protruding block is arranged at the top of each main sliding groove, and an extension plate is arranged at the bottom of each main supporting protruding block. A movable groove is formed in the main supporting protruding block, a lifting plate is arranged in the movable groove, clamping rods are arranged on the two sides of the bottom of the lifting plate, a shifting plate is arranged on one side of the clamping lifting plate, and a main sliding groove with a rack is formed in the surface of the carrier plate and matched with an extending plate at the bottom of the main supporting protruding block, so that the sliding function of the main supporting protruding block is achieved; and the lifting plate, the clamping rod and the shifting plate in the movable groove are mutually clamped with the tooth grooves in the rack, so that the stability after adjustment is ensured, due to the design, when ceramic substrates with different sizes are placed, proper adjustment can be performed according to the actual sizes of the ceramic substrates, and the applicability of the jig is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic substrate processing technology, specifically relating to a sintering fixture for copper-clad ceramic substrates. Background Technology

[0002] With the revolution and progress of global electronic technology, electronic technology is developing towards high integration and miniaturization, placing higher demands on the performance of substrates. Traditional substrates can no longer meet the high power and high heat dissipation requirements of semiconductor modules. Copper-clad ceramic substrates (DBC substrates) have become a key basic material in power electronic devices due to their significant characteristics such as good thermal conductivity, high reliability, strong insulation, and low coefficient of thermal expansion. The DBC process is the surface metallization of ceramic substrates. Specifically, copper foil is covered on the ceramic substrate and sintered at 1065-1083℃. Copper and oxygen form a Cu-O eutectic liquid. This eutectic liquid phase wets the copper foil and the surface of the alumina ceramic substrate, and a eutectic reaction occurs to generate composite oxides such as Cu(AlO2)2 or Cu(AlO2), thus achieving the bonding between the alumina ceramic substrate and the copper foil.

[0003] According to the copper-clad ceramic substrate sintering fixture disclosed in patent number CN201420654841.X, the fixture includes a main body, which includes a left end, a middle part, and a right end. The left end, the middle part, and the right end are integrally formed. The height of the left end and the right end is greater than the height of the middle part. The left end and the right end are respectively provided with inclined surfaces, and the intersection of the inclined surfaces and the middle part forms an obtuse angle. The upper surfaces of the left end and the right end are respectively provided with protrusions, and the lower surfaces of the left end and the right end are respectively provided with grooves. The protrusions and grooves match. The middle part is provided with a through hole.

[0004] In practical use, the above solution is difficult to adjust the position of the left and right ends according to the actual size of the substrate because the left, middle and right ends are a single structure. This makes it difficult to place the substrate when the distance between the left and right ends is greater than the length of the substrate. The fixture needs to be remade according to the size of the substrate, which greatly increases the processing cost. Therefore, we propose a copper-clad ceramic substrate sintering fixture. Utility Model Content

[0005] The purpose of this invention is to provide a sintering fixture for copper-clad ceramic substrates to solve the existing problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a copper-clad ceramic substrate sintering fixture, comprising a carrier plate, a main slide groove, and a rack. The carrier plate has main slide grooves on both sides of its central portion. Racks are provided on the inner walls of both sides of the inner middle portion of the main slide groove. The racks and the carrier plate are integrally formed. A main support protrusion is slidably disposed on the top of the main slide groove. A slope is provided on one side of the top of the main support protrusion. An extension plate is provided at the bottom of the main support protrusion corresponding to the position of the main slide groove. A movable groove is provided inside the main support protrusion. A lifting plate is slidably disposed inside the movable groove. Locking rods are provided on both sides of the bottom of the lifting plate. The locking rods pass through the bottom of the main support protrusion and are slidably connected to it. The bottom ends of the locking rods extend into the tooth grooves of the rack. A lever is provided on one side of the lifting plate. One end of the lever passes through one side of the main support protrusion and is slidably connected to it.

[0007] Preferably, connecting rods are fixedly installed at both ends of the main support protrusion, and an auxiliary support protrusion is fixedly connected to the end of the connecting rod away from the main support protrusion. The auxiliary support protrusion is slidably connected to the carrier plate.

[0008] Preferably, auxiliary sliding grooves are provided on both sides of the carrier plate, and an extension plate is also provided at the bottom of the auxiliary support protrusion. The extension plate at the bottom of the auxiliary support protrusion extends into the interior of the auxiliary sliding groove and is slidably connected to its inner wall.

[0009] Preferably, a limiting plate is provided at the bottom of the extension plate, and the limiting plate is fixedly connected to the bottom of the carrier plate.

[0010] Preferably, the top of both the main support protrusion and the auxiliary support protrusion is provided with a stacked protrusion, and the stacked protrusion and the main support protrusion or the auxiliary support protrusion are integral structures.

[0011] Preferably, the bottom of the limiting plate is provided with a stacking groove, the size of which corresponds to the size of the stacking protrusion.

[0012] Preferably, the two ends of the extension plate at the bottom of the main support protrusion are provided with arc-shaped guide blocks, and the arc-shaped guide blocks and the extension plate are integral structures.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By opening a main slide groove with a toothed rack on the surface of the carrier plate, and cooperating with the extension plate at the bottom of the main support protrusion, the sliding function of the main support protrusion is realized. The lifting plate, locking rod and lever in the movable groove cooperate with the toothed groove on the rack to realize the locking and positioning of the main support protrusion, ensuring the stability after adjustment. This design allows for appropriate adjustment according to the actual size of the ceramic substrate when placing ceramic substrates of different sizes, greatly improving the applicability of the fixture.

[0015] 2. By setting connecting rods on both sides of the main support protrusion, the auxiliary support protrusions on both sides can be fixedly connected. With the help of the auxiliary slide, the main support protrusion and the auxiliary support protrusion on the same side can move synchronously, ensuring the stability of the support effect. The limiting plate at the bottom of the extension plate can limit the movement and prevent the extension plate on the main support protrusion and the auxiliary support protrusion from separating. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the carrier plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the main support protrusion structure of this utility model.

[0019] In the diagram: 1. Carrier plate; 2. Main slide groove; 3. Rack; 4. Auxiliary slide groove; 5. Main support protrusion; 6. Movable groove; 7. Lifting plate; 8. Locking rod; 9. Pulley; 10. Connecting rod; 11. Auxiliary support protrusion; 12. Stacking protrusion; 13. Extension plate; 14. Limiting plate; 15. Stacking groove; 16. Arc-shaped guide block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution for a sintering fixture for copper-clad ceramic substrates: it includes a carrier plate 1, a main slide groove 2, and a rack 3. The carrier plate 1 has a main slide groove 2 on both sides of its middle section. The inner walls of the main slide groove 2 are provided with racks 3 on both sides of its middle section. The racks 3 and the carrier plate 1 are integrally formed. A main support protrusion 5 is slidably provided on the top of the main slide groove 2. A slope is provided on one side of the top of the main support protrusion 5. An extension plate 13 is provided at the bottom of the main support protrusion 5 corresponding to the position of the main slide groove 2. A movable groove 6 is provided inside the main support protrusion 5. A lifting plate 7 is slidably provided inside the movable groove 6. A locking rod 8 is provided on both sides of the bottom of the lifting plate 7. The locking rod 8 passes through the bottom of the main support protrusion 5 and is slidably connected to it. The bottom end of the locking rod 8 extends into the tooth groove of the rack 3. A lever 9 is provided on one side of the lifting plate 7. One end of the lever 9 passes through one side of the main support protrusion 5 and is slidably connected to it.

[0022] Specifically, connecting rods 10 are fixedly installed at both ends of the main support protrusion 5, and an auxiliary support protrusion 11 is fixedly connected to the end of the connecting rod 10 away from the main support protrusion 5. The auxiliary support protrusion 11 is slidably connected to the carrier plate 1.

[0023] Specifically, auxiliary grooves 4 are provided on both sides of the carrier plate 1, and an extension plate 13 is also provided at the bottom of the auxiliary support protrusion 11. The extension plate 13 at the bottom of the auxiliary support protrusion 11 extends into the interior of the auxiliary groove 4 and is slidably connected to its inner wall.

[0024] Specifically, a limiting plate 14 is provided at the bottom of the extension plate 13, and the limiting plate 14 is fixedly connected to the bottom of the carrier plate 1 and the extension plate 13.

[0025] Specifically, the top of both the main support protrusion 5 and the auxiliary support protrusion 11 is provided with a stacked protrusion 12, and the stacked protrusion 12 and the main support protrusion 5 or the auxiliary support protrusion 11 are an integral structure.

[0026] Specifically, the bottom of the limiting plate 14 is provided with a stacking groove 15, the size of which corresponds to the size of the stacking protrusion 12.

[0027] Specifically, arc-shaped guide blocks 16 are provided at both ends of the extension plate 13 at the bottom of the main support protrusion 5, and the arc-shaped guide blocks 16 and the extension plate 13 are an integral structure.

[0028] In this embodiment, during use, depending on the size of the ceramic substrate, the lever 9 is lifted upwards, causing the lifting plate 7 to rise inside the movable groove 6. The lifting plate 7 then carries the locking rod 8 upwards, retracting it into the movable groove 6 until the locking rod 8 disengages from the toothed groove on the rack 3. Then, the main support protrusion 5 is pushed along the trajectory inside the main slide groove 2 for adjustment, guided by the arc-shaped guide block 16 to prevent misalignment between the end of the extension plate 13 and the rack 3, which could cause jamming during adjustment and affect efficiency. During the movement of the main support protrusion 5, the connecting rod 10 drives the two sides... The auxiliary support protrusion 11 moves synchronously along the auxiliary slide 4. After the main support protrusion 5 is adjusted to the appropriate position, the push plate 9 is pressed down, causing the lifting plate 7 to descend inside the movable groove 6, thereby pushing the locking rod 8 downward into the tooth groove of the rack 3, thus realizing the function of locking and positioning the main support protrusion 5 to ensure its stability. The inclined surface opened on one side of the top of the main support protrusion 5 and the auxiliary support protrusion 11 realizes the stable placement of the ceramic substrate. In addition, the stacking protrusion 12 on the top of the main support protrusion 5 and the auxiliary support protrusion 11 are interlocked with the stacking groove 15 at the bottom of the limiting plate 14 to realize the stacking of the carrier plate 1.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sintering jig for a copper clad ceramic substrate, comprising a carrier plate (1), a main sliding groove (2) and a rack (3), characterized in that: The middle part of the carrier plate (1) is provided with a main sliding groove (2) on both sides, the inner wall of the middle end of the main sliding groove (2) is provided with a rack (3), the main sliding groove (2) is provided with a main supporting lug (5) on the top, the top side of the main supporting lug (5) is provided with an inclined surface, the bottom of the main supporting lug (5) is provided with an extension plate (13) corresponding to the position of the main sliding groove (2), the inside of the main supporting lug (5) is provided with a movable groove (6), the inside of the movable groove (6) is provided with a lifting plate (7) which slides, the bottom of the lifting plate (7) is provided with a clamping rod (8) on both sides, the clamping rod (8) passes through the bottom of the main supporting lug (5) and is connected with it in sliding mode, the bottom end of the clamping rod (8) extends into the tooth groove of the rack (3), one side of the lifting plate (7) is provided with a push plate (9), one end of the push plate (9) passes through one side of the main supporting lug (5) and is connected with it in sliding mode.

2. The copper clad ceramic substrate sintering jig according to claim 1, wherein: The two ends of the main supporting lug (5) are fixedly provided with a connecting rod (10), the end of the connecting rod (10) away from the main supporting lug (5) is fixedly connected with an auxiliary supporting lug (11), the auxiliary supporting lug (11) is connected with the carrier plate (1) in sliding mode. 3.The copper clad ceramic substrate sintering jig according to claim 2, characterized in that: The bottom of the auxiliary supporting lug (11) is also provided with an extension plate (13), the extension plate (13) of the bottom of the auxiliary supporting lug (11) extends into the inside of the auxiliary sliding groove (4) and is connected with the inner wall in sliding mode.

4. The copper clad ceramic substrate sintering jig of claim 1, wherein: The bottom of the extension plate (13) is provided with a limiting plate (14), the limiting plate (14) is arranged on the bottom of the carrier plate (1) and is fixedly connected with the extension plate (13).

5. The copper clad ceramic substrate sintering jig of claim 1, wherein: The top of the main supporting lug (5) and the auxiliary supporting lug (11) is provided with a stacking protrusion (12), the stacking protrusion (12) is an integral structure with the main supporting lug (5) or the auxiliary supporting lug (11).

6. The copper clad ceramic substrate sintering jig of claim 4, wherein: The bottom of the limiting plate (14) is provided with a stacking groove (15), the size of the stacking groove (15) corresponds to the size of the stacking protrusion (12).

7. The copper clad ceramic substrate sintering jig of claim 1, wherein: The two ends of the extension plate (13) of the bottom of the main supporting lug (5) are provided with arc-shaped guide blocks (16), the arc-shaped guide blocks (16) are an integral structure with the extension plate (13).

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