Copper-clad ceramic substrate sintering jig

Abstract

The utility model discloses a copper-clad ceramic substrate sintering jig which comprises a bearing body, adjustable supporting blocks are arranged on the front side and the rear side of the upper surface of the bearing body, L-shaped supporting pieces distributed in a bilateral symmetry mode are fixedly connected to the sides, close to each other, of the two supporting blocks, and the copper-clad ceramic substrate sintering jig further comprises an adjusting mechanism. The adjusting mechanism comprises a dovetail sliding groove, dovetail sliding blocks, fixing pins and a V-shaped movable block, the dovetail sliding blocks are fixedly connected to the middle of the lower surface of the supporting block, the dovetail sliding groove is formed in the middle of the upper surface of the bearing body, the dovetail sliding blocks are slidably connected into the dovetail sliding groove, the lower surfaces of the dovetail sliding blocks are fixedly connected with the fixing pins, and the V-shaped movable block is fixedly connected with the fixing pins. A V-shaped movable block is connected to the lower surface of the bearing body in a sliding mode, a V-shaped sliding groove is formed in the V-shaped movable block, the copper-clad ceramic substrate sintering jig is suitable for various copper-clad ceramic substrates with different widths, the jig does not need to be replaced frequently, the downtime of a production line is shortened, and the applicability is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of copper-clad ceramic processing equipment, specifically a sintering fixture for copper-clad ceramic substrates. Background Technology

[0002] With the rapid development of 5G communication, new energy vehicles and high-power semiconductor devices, copper-clad ceramic substrates have become the core material for power module packaging due to their excellent thermal conductivity, insulation and high-frequency performance. However, during the high-temperature sintering process, the difference in thermal expansion coefficients between the copper layer and the ceramic substrate can easily cause defects such as warping and delamination. Therefore, it is necessary to use a copper-clad ceramic substrate sintering fixture to limit the position of the copper-clad ceramic substrate.

[0003] In the prior art, patent publication number CN219919291 U discloses a sintering fixture for copper-clad ceramic substrates, including a carrier body; a silicon nitride support member disposed on the carrier body; the silicon nitride support member includes a first support portion, the first support portion including a first sheet-like support foot and a second sheet-like support foot, the first sheet-like support foot and the second sheet-like support foot intersecting at a line such that the cross-section of the first support portion is L-shaped; the first support portion is used to support the corners of the copper-clad ceramic substrate;

[0004] The sintering fixtures for copper-clad ceramic substrates of this type have the following disadvantages: they can only be used for copper-clad ceramic substrates of specific sizes. When sintering copper-clad ceramic substrates of different sizes, new copper-clad ceramic substrate sintering fixtures need to be replaced, resulting in poor applicability. To address this, we propose a sintering fixture for copper-clad ceramic substrates. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a sintering fixture for copper-clad ceramic substrates. Through the adjustment mechanism, the moving lever drives the V-shaped movable plate to limit the fixed pin, thereby driving the dovetail slider to slide in the dovetail groove, and thus adjusting the position of the support blocks on both sides. This allows it to adapt to copper-clad ceramic substrates of various widths, eliminating the need for frequent fixture changes, reducing production line downtime, and improving applicability. It can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a copper-clad ceramic substrate sintering fixture, comprising a carrier body, wherein adjustable support blocks are provided on both the front and rear sides of the upper surface of the carrier body, and L-shaped support members symmetrically distributed on the side of the two support blocks that are close to each other are fixedly connected, and an adjustment mechanism is also included.

[0007] Adjustment mechanism: It includes a dovetail groove, a dovetail slider, a fixing pin, and a V-shaped movable block. The dovetail sliders are all fixedly connected to the middle of the lower surface of the support block. A dovetail groove is opened in the middle of the upper surface of the carrier, and the dovetail sliders are all slidably connected in the dovetail groove. A fixing pin is fixedly connected to the lower surface of the dovetail sliders. A V-shaped movable block is slidably connected to the lower surface of the carrier. A V-shaped groove is opened inside the V-shaped movable block, and the fixing pin is all slidably connected in the V-shaped groove. Through the adjustment mechanism, the toggle lever moves to drive the V-shaped movable plate to limit the fixing pin, thereby driving the dovetail slider to slide in the dovetail groove, and thus adjusting the position of the support blocks on both sides. This allows it to adapt to copper-clad ceramic substrates of various widths, eliminating the need for frequent fixture changes, reducing production line downtime, and making it more versatile.

[0008] Furthermore, the adjustment mechanism also includes a toggle lever and a clearance groove. The toggle lever is fixedly connected to the front end of the V-shaped movable block, and a clearance groove is provided on the left side of the front surface of the carrier. The toggle lever is slidably connected in the clearance groove to facilitate the adjustment of the position of the V-shaped movable block.

[0009] Furthermore, a threaded groove is provided in the middle of the outer surface of the actuating rod, and a fastening bolt is threadedly connected to the outer surface of the threaded groove to lock the actuating rod.

[0010] Furthermore, the front surface of the carrier has evenly distributed scale lines on the left side to facilitate observation of the adjustment degree of the two support blocks.

[0011] Furthermore, the upper surface of the carrier is provided with uniformly distributed through holes, and the interior of the support block is also provided with uniformly distributed through holes to facilitate the flow of hot air and ensure the sintering efficiency of the copper-clad ceramic substrate.

[0012] Furthermore, connecting columns are fixedly connected to both the left and right sides of the upper surface of the support block, and insertion holes are opened on both the left and right sides of the lower surface of the support block to facilitate the connection and stacking of multilayer copper-clad ceramic substrate sintering fixtures.

[0013] Furthermore, it also includes a baffle plate, which is set on the upper side of the two support blocks. The upper surface of the baffle plate has slots on both the left and right sides, and the connecting columns are inserted into the slots to prevent dust particles inside the sintering equipment from contacting the copper-clad ceramic substrate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This copper-clad ceramic substrate sintering fixture has the following advantages:

[0015] The adjustment mechanism moves the lever to limit the fixed pin by moving the V-shaped movable plate, which in turn moves the dovetail slider in the dovetail groove, thereby adjusting the position of the support blocks on both sides. This allows it to adapt to various copper-clad ceramic substrates of different widths, eliminating the need for frequent fixture changes, reducing production line downtime, and making it more versatile. Attached Figure Description

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

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model.

[0019] In the figure: 1. Bearing body, 2. Support block, 3. L-shaped support, 4. Connecting column, 5. Through hole, 6. Scale line, 7. Adjustment mechanism, 71. Dovetail slide, 72. Dovetail slider, 73. Fixing pin, 74. V-shaped movable block, 75. Actuating rod, 76. Clearance groove, 8. Threaded groove, 9. Fastening bolt, 10. Insertion hole, 11. Baffle. 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 1-3This embodiment provides a technical solution: a copper-clad ceramic substrate sintering fixture, including a carrier body 1. This fixture is made entirely of silicon carbide to minimize thermal expansion caused by high temperatures during sintering. Adjustable support blocks 2 are provided on both the front and rear sides of the upper surface of the carrier body 1. Two L-shaped support members 3 are fixedly connected to the sides of two adjacent support blocks 2. The copper-clad ceramic substrate is placed on the upper side of the four L-shaped support members 3. Uniformly distributed scale lines 6 are provided on the left side of the front surface of the carrier body 1, allowing precise control of the distance between the two support blocks 2. Uniformly distributed through holes 5 are provided on the upper surface of the carrier body 1, and uniformly distributed through holes 5 are also provided inside the support blocks 2. The through holes 5 ensure that the copper-clad ceramic substrate is properly positioned during sintering. For ventilation and heat transfer, the upper surface of the support block 2 is fixedly connected to the left and right sides with connecting columns 4, and the lower surface of the support block 2 is provided with insertion holes 10 on the left and right sides. At the same time, the connecting columns 4 of the lower copper-clad ceramic substrate sintering fixture can be inserted into the vertically corresponding insertion holes 10 of the upper copper-clad ceramic substrate sintering fixture, thereby stacking the copper-clad ceramic substrate sintering fixture and increasing space utilization. It also includes a baffle 11, which is set on the upper side of the two support blocks 2. The upper surface of the baffle 11 is provided with slots on the left and right sides, and the connecting columns 4 are inserted into the slots. The baffle 11 is placed on the uppermost copper-clad ceramic substrate sintering fixture, so that the uppermost connecting column 4 is inserted into the slot. Then the copper-clad ceramic substrate sintering fixture is placed in the sintering equipment for sintering. It also includes an adjustment mechanism 7.

[0022] Adjustment mechanism 7 includes a dovetail groove 71, a dovetail slider 72, a fixing pin 73, and a V-shaped movable block 74. The dovetail sliders 72 are all fixedly connected to the center of the lower surface of the support block 2. A dovetail groove 71 is formed in the center of the upper surface of the carrier 1, and the dovetail sliders 72 are slidably connected within the dovetail groove 71. A fixing pin 73 is fixedly connected to the lower surface of each dovetail slider 72. A V-shaped movable block 74 is slidably connected to the lower surface of the carrier 1 (a protrusion is fixedly connected to the lower surface of the carrier 1, and a groove is formed in the center of the V-shaped movable block 74, allowing it to move only horizontally under the limiting action of the protrusion). A V-shaped groove is formed inside the V-shaped movable block 74, and the fixing pin 73 is slidably connected within the V-shaped groove. The adjustment mechanism 7 also includes a toggle rod 75 and a clearance groove 76. The toggle rod 75 is fixedly connected to the front end of the V-shaped movable block 74, and a clearance groove 76 is formed on the left side of the front surface of the carrier 1. 6. The actuating rod 75 is slidably connected in the clearance groove 76. When the actuating rod 75 is moved, it slides along the direction of the clearance groove 76, causing the V-shaped movable block 74 to move. This causes the two fixed pins 73 to move synchronously towards or opposite each other under the limiting action of the V-shaped sliding groove, causing the two dovetail sliders 72 to move towards or opposite each other in the dovetail sliding groove 71. This causes the two support blocks 2 to move synchronously towards or opposite each other, thereby adjusting the distance between the two support blocks 2. The outer surface of the actuating rod 75 has a threaded groove 8 in the middle. The outer surface of the threaded groove 8 is threaded with a fastening bolt 9. Rotating the fastening bolt 9 causes it to move, separating the rear surface of the fastening bolt 9 from the front surface of the carrier 1, thereby unlocking the actuating rod 75. After adjusting to a suitable position, rotating the fastening bolt 9 causes it to move, and the rear surface of the fastening bolt 9 presses against the front surface of the carrier 1, thereby locking the actuating rod 75.

[0023] The working principle of the copper-clad ceramic substrate sintering fixture provided by this utility model is as follows: When using this copper-clad ceramic substrate sintering fixture to perform sintering operations on the copper-clad ceramic substrate, rotating the fastening bolt 9 moves the fastening bolt 9, causing the rear surface of the fastening bolt 9 to separate from the front surface of the carrier 1, thereby unlocking the toggle lever 75. At this time, toggle lever 75 is moved, causing it to slide along the direction of the clearance groove 76, driving the V-shaped movable block 74 to move. This causes the two fixing pins 73 to move synchronously towards or opposite each other under the limiting action of the V-shaped sliding groove, driving the two dovetail sliders 72 to move towards or opposite each other in the dovetail sliding groove 71, thereby driving the two support blocks 2 to move synchronously towards or opposite each other, thus adjusting the distance between the two support blocks 2. At the same time, the distance between the two support blocks 2 can be precisely controlled according to the scale line 6. After adjusting to the appropriate position, rotating the fastening bolt 9... The bolt 9 is tightened, causing it to move. The rear surface of the bolt 9 presses against the front surface of the bearing 1, thereby locking the lever 75. The copper-clad ceramic substrate is placed on the upper side of the four L-shaped supports 3. At the same time, the connecting post 4 of the lower copper-clad ceramic substrate sintering fixture can be inserted into the vertical corresponding insertion hole 10 of the upper copper-clad ceramic substrate sintering fixture, thereby stacking the copper-clad ceramic substrate sintering fixture and increasing space utilization. The baffle 11 is placed on the uppermost copper-clad ceramic substrate sintering fixture, so that the uppermost connecting post 4 is inserted into the slot. Then, the copper-clad ceramic substrate sintering fixture is placed in the sintering equipment for sintering. The through hole 5 ensures ventilation and heat transfer during sintering of the copper-clad ceramic substrate. The copper-clad ceramic substrate sintering fixture is made of silicon carbide, thereby minimizing the thermal expansion caused by the high temperature during sintering.

[0024] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A copper-clad ceramic substrate sintering jig, comprising a bearing body (1), the upper surface of the bearing body (1) is provided with adjustable support blocks (2) on both front and back sides, the side close to each other of the two support blocks (2) is fixedly connected with left and right symmetrically distributed L-shaped support pieces (3), characterized in that: Also includes the adjusting mechanism (7); The adjusting mechanism (7) comprises dovetail sliding groove (71), dovetail sliding block (72), fixed pin (73) and V-shaped movable block (74), the dovetail sliding block (72) is fixedly connected to the lower surface middle part of support block (2), the upper surface middle part of bearing body (1) is provided with dovetail sliding groove (71), the dovetail sliding block (72) is slidably connected in dovetail sliding groove (71), the lower surface of dovetail sliding block (72) is fixedly connected with fixed pin (73), the lower surface of bearing body (1) is slidably connected with V-shaped movable block (74), V-shaped movable block (74) is provided with V-shaped sliding groove in the inside, and fixed pin (73) is slidably connected in V-shaped sliding groove.

2. The copper clad ceramic substrate sintering jig of claim 1, wherein: The adjusting mechanism (7) further comprises a lever (75) and an avoidance slot (76), the lever (75) is fixedly connected to the front end of the V-shaped movable block (74), the front surface left side of the bearing body (1) is provided with an avoidance slot (76), and the lever (75) is slidably connected in the avoidance slot (76).

3. The copper clad ceramic substrate sintering fixture of claim 2, wherein: The outer surface middle part of the lever (75) is provided with a threaded groove (8), and the outer surface of the threaded groove (8) is screw-connected with a fastening bolt (9).

4. The copper clad ceramic substrate sintering fixture of claim 1, wherein: The front surface left side of the bearing body (1) is provided with evenly distributed scale lines (6).

5. The copper clad ceramic substrate sintering fixture of claim 1, wherein: The upper surface of the bearing body (1) is provided with evenly distributed through holes (5), and the inside of the support block (2) is also provided with evenly distributed through holes (5).

6. The copper clad ceramic substrate sintering fixture of claim 1, wherein: The upper surface left and right sides of the support block (2) are fixedly connected with connecting columns (4), and the lower surface left and right sides of the support block (2) are provided with insertion holes (10).

7. The copper clad ceramic substrate sintering fixture of claim 6, wherein: It also includes a baffle (11), the baffle (11) is arranged on the upper side of the two support blocks (2), the upper surface left and right sides of the baffle (11) are provided with grooves, and the connecting columns (4) are inserted into the grooves.

Images