Multi-depth etching clamp for ceramic-based circuit board

Abstract

The multi-depth etching clamp for the ceramic-based circuit board comprises a carrying table, an end frame and an air cylinder, the front end of the carrying table is fixedly connected with the end frame, the front face of the end frame is fixedly connected with the air cylinder, the output end of the air cylinder is fixedly connected with a top plate, and the top plate can ascend and descend. The inner side of the top plate is fixedly connected with a transverse rail, the rail is movably connected with a sliding block, and the front face of the sliding block is in threaded connection with a tightening wire. The clamp has the advantages that the clamp has flexible adaptability, the three-dimensional adjusting function of the pressing piece can be compatible with ceramic substrates of different sizes, thicknesses and shapes, the clamp is particularly suitable for the etching requirement of multiple line width distances in the DPC technology, the etching uniformity is improved, the angle and pressure of the pressing piece are accurately adjusted, the displacement of the substrate is reduced, the spraying uniformity of etching liquid is ensured, and the etching efficiency is improved. And the high-precision circuit manufacturing requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic base circuit board processing technical field, especially a kind of multi-depth etching fixture for ceramic base circuit board. BACKGROUND

[0002] Ceramic base circuit board is widely used in the field of semiconductor packaging, high-power device, etc., and its etching process needs to control line width and uniformity with high precision. The traditional etching fixture fixing mode is single, which is difficult to adapt to different thickness, size of substrate and multi-depth etching requirements, resulting in low production efficiency and insufficient flexibility. Therefore, a fixture capable of flexibly adjusting clamping position, height and angle is needed to meet the requirements of complex process. SUMMARY

[0003] The utility model aims at at least solving one of the technical defects.

[0004] Therefore, one object of the utility model is to provide a multi-depth etching fixture for ceramic base circuit board to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a multi-depth etching fixture for ceramic base circuit board, which comprises a carrier, an end frame and a gas cylinder. The front end of the carrier is fixedly connected with the end frame, the front surface of the end frame is fixedly connected with the gas cylinder, and the output end of the gas cylinder is fixedly connected with the top plate.

[0006] The top plate is liftable, and the inner side of the top plate is fixedly connected with a horizontal track.

[0007] The track is movably connected with a sliding block, and the front surface of the sliding block is threadedly connected with a wire.

[0008] The bottom end of the sliding block is fixedly connected with a pressing arm, the front end of the pressing arm is open, and the front end of the pressing arm is provided with a through hole.

[0009] The front end opening of the pressing arm is movably connected with a pressing piece, the pressing piece is rotatable and lockable in angle, and the pressing piece and the through hole are connected with a fastener.

[0010] According to any one of the above-mentioned schemes, the carrier and the end frame are welded, and the end frame and the gas cylinder are connected by screws.

[0011] The above-mentioned technical scheme is adopted: the carrier and the driving mechanism: the carrier front end is welded with the end frame, the end frame front surface is fixed with the vertical gas cylinder through screws, the gas cylinder output end is connected with the top plate, and the lifting control of the top plate is realized.

[0012] Rail and slider adjustment: stainless steel rail fixed inside the top plate, slider connected with the rail through a tight wire. Loosen the tight wire to adjust the horizontal position of the slider, then lock it with a hexagonal head to ensure stability.

[0013] Pressing arm and pressing plate design: the bottom end of the slider is fixed with a 90° bent pressing arm through a screw. The front end of the pressing arm is perforated and connected with two bent pressing plates. The angle of the pressing plate can be rotated, the horizontal position can be adjusted by moving the slider, and the height is controlled by the cylinder to achieve three-dimensional free adjustment.

[0014] Fastening and locking: the bolt passes through the pressing plate and the perforation, and is locked with a washer nut to ensure the stable clamping of the contact surface between the pressing plate and the base plate.

[0015] Preferably, according to any of the above solutions, the cylinder is vertically installed, and the material of the rail is stainless steel.

[0016] Preferably, according to any of the above solutions, the position of the slider on the rail is adjustable and lockable, and the end of the tight wire is fixedly connected with a hexagonal head.

[0017] Core adjustment function

[0018] Height adjustment: the top plate is driven to rise and fall by the cylinder, driving the overall height of the pressing plate to change, adapting to different thickness of the base plate or etching liquid spraying distance requirements.

[0019] Horizontal position adjustment: the slider moves horizontally along the rail, and the horizontal position of the pressing plate can be adjusted manually after loosening the tight wire, adapting to the edge clamping needs of different size base plates.

[0020] Angle adjustment: the pressing plate can be rotated around the perforation and locked, adapting to the inclined or special-shaped structure of the edge of the base plate, avoiding unstable clamping caused by angle deviation.

[0021] Preferably, according to any of the above solutions, the pressing arm is 90° bent, and the pressing arm is connected with the slider through a screw.

[0022] Operation process: step: start the cylinder to adjust the top plate to the preset height.

[0023] Step: loosen the tight wire, move the slider to the target horizontal position and lock it.

[0024] Step: rotate the pressing plate to the angle matching the edge of the base plate, and tighten the washer nut to fix it.

[0025] Step: place the base plate on the loading platform, and press the pressing plate to contact the edge of the base plate to complete the clamping.

[0026] Preferably, according to any of the above solutions, the angle and horizontal position of the pressing plate are adjustable, and the pressing plate is two bent.

[0027] The clamp has flexible adaptability: the three-dimensional adjustment function of the pressing plate can be compatible with ceramic substrates of different sizes, thicknesses and shapes, and is especially suitable for etching requirements of multiple line widths in the DPC process.

[0028] The etching uniformity is improved: by accurately adjusting the pressing plate angle and pressure, the substrate displacement is reduced, the etching liquid spraying uniformity is ensured, and the high-precision line manufacturing requirements are met.

[0029] Preferably, the fastener is a bolt and a gasket nut, wherein the bolt passes through the pressing plate and the perforation, and the gasket nut is tightened to clamp the pressing arm port.

[0030] Compared with the prior art, the clamp has the following advantages and beneficial effects:

[0031] The multi-depth etching clamp for ceramic-based circuit boards has the following advantages: the three-dimensional adjustment function of the pressing plate can be compatible with ceramic substrates of different sizes, thicknesses and shapes, and is especially suitable for etching requirements of multiple line widths in the DPC process.

[0032] The etching uniformity is improved: by accurately adjusting the pressing plate angle and pressure, the substrate displacement is reduced, the etching liquid spraying uniformity is ensured, and the high-precision line manufacturing requirements are met.

[0033] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0034] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0035] Figure 1 It is a structural schematic view of the first perspective of the present application;

[0036] Figure 2 It is a structural schematic view of the second perspective of the present application;

[0037] Figure 3 It is a structural schematic view of the third perspective of the present application;

[0038] Figure 4 It is a structural schematic view of the third perspective of the present application; Figure 3 It is an enlarged structural schematic view of position A in the present application.

[0039] In the figure: 1-Loading platform, 2-End frame, 3-Cylinder, 4-Top plate, 5-Track, 6-Slider, 7-Tight wire, 8-Pressing arm, 9-Perforation, 10-Pressing plate, 11-Fastener. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] like Figures 1-4 As shown, the multi-depth etching fixture for ceramic-based circuit boards includes a stage 1, an end frame 2, and a cylinder 3. The end frame 2 is fixedly connected to the front end of the stage 1, the cylinder 3 is fixedly connected to the front end of the end frame 2, and the top plate 4 is fixedly connected to the output end of the cylinder 3.

[0043] The top plate 4 is adjustable in height, and a horizontal track 5 is fixedly connected to the inner side of the top plate 4.

[0044] A slider 6 is movably connected to the track 5, and a tension wire 7 is threadedly connected to the front of the slider 6, with the end of the tension wire 7 abutting against the surface of the track 5.

[0045] The bottom end of the slider 6 is fixedly connected to the pressure arm 8, the front end of the pressure arm 8 is open, and the front end of the pressure arm 8 is provided with a through hole 9;

[0046] A pressure plate 10 is movably connected to the front opening of the pressure arm 8. The pressure plate 10 can be rotated and locked at an angle. Fasteners 11 are connected to the pressure plate 10 and the through hole 9.

[0047] Example 1: The platform 1 is welded to the end frame 2, and the end frame 2 is connected to the cylinder 3 by screws.

[0048] The structure and connection relationships of this clamp

[0049] Platform and drive mechanism: The front end of the platform 1 is welded with the end frame 2. The front of the end frame is fixed with screws to the vertical cylinder 3. The output end of the cylinder is connected to the top plate 4 to realize the lifting and lowering control of the top plate.

[0050] Track and slider adjustment: A stainless steel track 5 is fixed to the inside of the top plate, and the slider 6 is slidably connected to the track via a tightening screw 7. Loosening the tightening screw allows for horizontal adjustment of the slider position, while tightening it secures it with a hexagonal locking head to ensure stability.

[0051] Pressing arm and pressing plate design: the bottom end of the sliding block is fixed with a 90° bent pressing arm 8 through a screw, the front end of the pressing arm is provided with a perforation 9 and is movably connected with two bent pressing plates 10. The pressing plate angle can be rotated, the horizontal position can be adjusted by moving the sliding block, and the height is controlled by the air cylinder to realize three-dimensional free adjustment.

[0052] Fastening and locking: the bolt passes through the pressing plate and the perforation and is locked in cooperation with the gasket nut 11, so that the pressing plate and the substrate contact surface are firmly clamped.

[0053] In example 2, the air cylinder 3 is vertically installed, and the material of the track 5 is stainless steel. The position of the sliding block 6 on the track 5 can be adjusted and locked, and the end of the tight wire 7 is fixedly connected with a hexagonal head. The pressing arm 8 is in a 90° bent shape, and the pressing arm 8 is connected with the sliding block 6 through a screw. The core adjustment function of the clamp is as follows:

[0054] Height adjustment: the top plate 4 is driven to rise and fall by the air cylinder 3, so that the overall height of the pressing plate 10 changes, and different thickness substrates or etching liquid spraying distance requirements can be adapted.

[0055] Horizontal position adjustment: the sliding block 6 moves transversely along the track 5, and the horizontal position of the pressing plate 10 can be manually adjusted after the tight wire 7 is loosened, so that the edge clamping demand of different size substrates can be adapted.

[0056] Angle adjustment: the pressing plate 10 can be rotated around the perforation 9 and locked, so that the edge inclination or special-shaped structure of the substrate can be adapted, and clamping instability caused by angle deviation can be avoided.

[0057] The working principle of the utility model is as follows:

[0058] Conventional operation process: step 1: start the air cylinder 3 to adjust the top plate 4 to the preset height.

[0059] Step 2: loosen the tight wire 7, move the sliding block 6 to the target horizontal position and lock.

[0060] Step 3: rotate the pressing plate 10 to the angle matched with the edge of the substrate, and tighten the gasket nut 11.

[0061] Step 4: place the substrate on the loading platform 1, press the pressing plate 10 to contact the edge of the substrate, and complete the clamping.

[0062] Taking the etching of a ceramic DBC thick copper substrate as an example:

[0063] Adjust the air cylinder to match the height of the pressing plate with the thickness of the substrate (such as 1.0 mm);

[0064] Move the sliding block to make the pressing plate horizontally cover the edges of the substrate on both sides;

[0065] Rotate the pressing plate to 15° inclination angle to fit the chamfer of the substrate;

[0066] After locking, start the etching procedure, and the etching line width accuracy can reach ±0.1mm.

[0067] Compared with the prior art, the utility model has the following beneficial effects relative to the prior art:

[0068] The multi-depth etching clamp for ceramic-based circuit boards has flexible adaptability, the three-dimensional adjustment function of the pressing sheet 10 is compatible with ceramic substrates of different sizes, thicknesses and shapes, and is especially suitable for etching requirements of multiple line widths in the DPC process.

[0069] Improve etching uniformity: by precisely adjusting the angle and pressure of the pressing sheet 10, reducing the displacement of the substrate, ensuring the uniformity of the etching liquid spraying, meeting the requirements of high-precision circuit production.

Claims

1. A multi-depth etching fixture for ceramic-based circuit boards, characterized by, Including the carrier (1), end frame (2), cylinder (3), the front end of the carrier (1) is fixedly connected with end frame (2), the front surface of end frame (2) is fixedly connected with cylinder (3), the output end of cylinder (3) is fixedly connected with top plate (4); The top plate (4) can be lifted, the inner side of the top plate (4) is fixedly connected with the track (5) of horizontal direction; The track (5) is movably connected with the sliding block (6), the front surface of the sliding block (6) is threadedly connected with the tight silk (7), the end of the tight silk (7) is abutted on the surface of track (5); The bottom end of the sliding block (6) is fixedly connected with the pressing arm (8), the front end of the pressing arm (8) is open, the front end of the pressing arm (8) is provided with the perforation (9); The front end opening of the pressing arm (8) is movably connected with the pressing piece (10), the pressing piece (10) can be rotated and locked angle, the pressing piece (10) and the perforation (9) are penetrated with fastener (11).

2. A multi-depth etch fixture for ceramic-based circuit boards as defined in claim 1, wherein: The carrier (1) is welded with end frame (2), and end frame (2) is connected with cylinder (3) through screw.

3. A multi-depth etch fixture for ceramic-based circuit boards as defined in claim 2, wherein: The cylinder (3) is installed vertically, and the material of the track (5) is stainless steel.

4. A multi-depth etch fixture for ceramic-based circuit boards as defined in claim 3, wherein: The position of the sliding block (6) on the track (5) can be adjusted and locked, and the end of the tight silk (7) is fixedly connected with hexagonal tight head.

5. A multi-depth etch fixture for ceramic-based circuit boards as defined in claim 4 wherein: The pressing arm (8) is ninety degrees bending shape, and the pressing arm (8) is connected with the sliding block (6) through screw.

6. A multi-depth etch fixture for ceramic-based circuit boards as defined in claim 5, wherein: The angle and horizontal position of the pressing piece (10) can be adjusted, and the pressing piece (10) is two bending shape.

7. A multi-depth etch fixture for ceramic-based circuit boards as defined in claim 6, wherein: The fastener (11) is specifically bolt and nut with washer, wherein the bolt passes through the pressing piece (10) and the perforation, and the nut with washer is tightened to clamp the pressing piece (10) in the port of the pressing arm (8).

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