A positioning fixture for double-sided copper-clad ceramic substrates

Abstract

This utility model discloses a positioning fixture for double-sided copper-clad ceramic substrates, within the field of ceramic substrate positioning fixture technology. It includes a base with a substrate groove and a copper plate groove. The substrate groove and copper plate groove are connected and arranged vertically, concentrically. An adjustment component is provided within the copper plate groove for adjusting its fit size. A positioning component is provided on the base, moving synchronously with the adjustment component. This utility model ensures that the upper and lower copper plates remain concentric during size adjustment by using a connecting rod to link the adjustment component and the positioning component. This suppresses exposure shift caused by layer misalignment during pattern transfer. Simultaneously, the rigid clamping of the horizontal plate and the damping hinge of the positioning block provide double anti-displacement protection, ensuring the substrate remains stable even when the printing platform moves at high speed.

Description

Technical Field

[0001] This utility model relates to the field of ceramic substrate positioning fixture technology, and in particular to a positioning fixture for double-sided copper-clad ceramic substrates. Background Technology

[0002] When double-sided copper-clad ceramic substrates undergo exposure processes during pattern transfer, the product cannot maintain a perpendicular or centered geometric relationship with the film; there will be a certain degree of offset, or misalignment of the upper and lower copper layers based on the ceramic substrate. Therefore, after etching, the position of the copper layer on this substrate will be tilted to varying degrees. When using full-board printing with a screen frame, conventional fixtures can only restrict the position of the ceramic substrate; the position of the copper surface cannot be effectively controlled.

[0003] However, existing technologies have some problems: when mass-producing products using existing fixtures, the products cannot be placed in the same position each time; the space of existing fixtures cannot be compactly fixed to secure the products; and the products themselves may warp, so the vacuum platform may not be able to completely hold and fix the products; when the printing platform moves, the products will shift due to inertia, causing printing misalignment and product rework. Therefore, we propose a positioning fixture for double-sided copper-clad ceramic substrates. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for a double-sided copper-clad ceramic substrate. By setting a double-layer structure, the copper plates on both sides of the product are limited, thereby ensuring printing quality.

[0005] The purpose of this utility model is achieved as follows: A positioning fixture for a double-sided copper-clad ceramic substrate includes a base, on which a substrate groove and a copper plate groove are formed. The substrate groove and the copper plate groove are connected and distributed vertically and concentrically. An adjustment component is provided in the copper plate groove for adjusting the fitting size of the copper plate groove. A positioning component is provided on the base, and the positioning component moves synchronously with the adjustment component. The positioning component is used to position the upper copper plate.

[0006] Optionally, the adjustment component includes a horizontal plate disposed inside the copper plate groove. There are two horizontal plates, which are distributed in opposite directions. A clamping plate is provided on the horizontal plate, and the clamping plate is set at a right angle to the horizontal plate.

[0007] Optionally, the cross plate is slidably connected to the base, a threaded rod is provided between the two cross plates, the threaded rod is rotatably connected to the base, the threaded rod is provided with bidirectional threads, the threaded rod is threadedly connected to the two cross plates respectively, and a knob is provided at one end of the threaded rod.

[0008] Optionally, the clamping plate is slidably connected to the horizontal plate, and a spring is provided inside the horizontal plate. One end of the spring is fixedly connected to the clamping plate, and the other end of the spring is fixedly connected to the horizontal plate.

[0009] Optionally, the positioning component includes a positioning plate that is slidably connected to the base, a positioning block that is hinged to the positioning plate, a locking block that is slidably connected to the positioning block, a lead screw that is threadedly connected to the locking block, and the lead screw that is rotatably connected to the positioning block.

[0010] Optionally, a clearance groove is provided on the base, and a connecting rod is fixedly connected between the horizontal plate and the positioning plate, with the connecting rod disposed in the clearance groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. By setting concentric layers of the substrate groove and copper plate groove, combined with an adjustable horizontal plate structure and a bidirectional threaded rod, the copper plate is accurately centered and clamped. This not only eliminates manual alignment deviation, but the spring preload set in the clamping plate and horizontal plate can also adapt to the size of the copper plate, improving the product yield.

[0013] 2. By setting up a linkage adjustment component and a positioning component, the upper and lower copper plates are ensured to always maintain a concentric relationship during size adjustment, thereby suppressing exposure offset caused by layer misalignment during pattern transfer. At the same time, the rigid clamping of the horizontal plate and the damping hinge of the positioning block form a double anti-displacement guarantee, so that the substrate can remain stable when the printing platform moves at high speed. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure provided by this utility model.

[0016] Figure 2 This is a schematic diagram of the adjustment component and positioning component provided by this utility model.

[0017] Figure 3 This is a cross-sectional schematic diagram of the horizontal plate structure provided by this utility model.

[0018] Figure 4 This is a schematic diagram of the positioning plate structure provided by this utility model.

[0019] In the diagram: 1. Base; 11. Base plate groove; 12. Copper plate groove; 13. Clearance groove; 2. Adjustment assembly; 21. Horizontal plate; 22. Clamping plate; 23. Threaded rod; 24. Spring; 3. Positioning assembly; 31. Positioning plate; 32. Positioning block; 33. Locking block; 34. Lead screw; 35. Connecting rod; 4. Knob. 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] like Figures 1 to 4 The fixture shown is a positioning tooling for a double-sided copper-clad ceramic substrate, comprising a base 1, a substrate groove 11 and a copper plate groove 12 formed thereon, the substrate groove 11 and the copper plate groove 12 being connected and arranged vertically and concentrically, an adjustment component 2 being provided in the copper plate groove 12 for adjusting the fitting size of the copper plate groove 12, and a positioning component 3 being provided on the base 1, the positioning component 3 moving synchronously with the adjustment component 2, the positioning component 3 being used to position the upper copper plate.

[0022] Furthermore, this application improves screen printing accuracy and production efficiency by setting positioning components 3 and adjustment components 2 on both sides of the fixture. The core of this application is to adopt a concentric layered structure of substrate groove 11 and copper plate groove 12, and to achieve the adaptation of different sizes with adjustment components 2. This solves the problem of poor vacuum adsorption caused by product warping in traditional fixtures. The positioning components 3, which move synchronously with adjustment components 2, ensure the precise alignment of the upper and lower copper plates, so that the product can always maintain positional consistency during mass production, effectively eliminating printing misalignment. This is especially suitable for equipment without CCD alignment function. In addition, by replacing manual alignment with mechanical positioning, not only is operation time reduced, but the defect rate caused by inertial displacement can also be reduced.

[0023] Specifically, the adjustment component 2 includes a horizontal plate 21, which is disposed inside the copper plate groove 12. There are two horizontal plates 21, which are distributed in opposite directions. A clamping plate 22 is provided on the horizontal plate 21, and the clamping plate 22 is set at a right angle to the horizontal plate 21.

[0024] Furthermore, the two symmetrically distributed horizontal plates 21, together with the vertical clamping plate 22, form an adjustable clamping structure, thereby enabling the fixture to adapt to copper plates of different sizes. The right-angle clamping plate 22 ensures that the copper plate remains horizontal in the groove, which not only guarantees the fixing strength of the copper plate, but also ensures the positional accuracy of the copper plate, so that the copper plate is always in a concentric position.

[0025] Specifically, the horizontal plate 21 is slidably connected to the base 1, and a threaded rod 23 is provided between the two horizontal plates 21. The threaded rod 23 is rotatably connected to the base 1. The threaded rod 23 is provided with bidirectional threads. The threaded rod 23 is threadedly connected to the two horizontal plates 21 respectively. A knob 4 is provided at one end of the threaded rod 23.

[0026] Furthermore, through the coordinated operation of the bidirectional thread and the knob 4, the two horizontal plates 21 can be clamped synchronously towards each other by rotating the knob 4, achieving precise size adjustment and ensuring that the copper plate is always centered, avoiding alignment deviations that may occur during manual adjustment. Secondly, the sliding connection can prevent displacement risks during the printing process by using mechanical self-locking characteristics while ensuring movement accuracy, which not only improves production compatibility but also ensures operational stability.

[0027] Specifically, the clamping plate 22 is slidably connected to the horizontal plate 21, and a spring 24 is provided inside the horizontal plate 21. One end of the spring 24 is fixedly connected to the clamping plate 22, and the other end of the spring 24 is fixedly connected to the horizontal plate 21.

[0028] It should be noted that the spring force of spring 24 is low, and it only needs to provide one position for positioning. The positioning of the bottom copper plate is mainly fixed by the mechanical clamping of the two side horizontal plates.

[0029] Furthermore, the spring 24 provides preload to make the clamping plate 22 adaptively fit the edge of the copper plate, eliminating assembly gaps and providing centering accuracy for the copper plate. At the same time, the use of a low-elasticity spring 24 can prevent the copper plate from deforming. The sliding connection structure, together with the main clamping force of the horizontal plate 21, forms a centering and positioning.

[0030] Specifically, the positioning component 3 includes a positioning plate 31, which is slidably connected to the base 1. A positioning block 32 is hinged on the positioning plate 31, and a locking block 33 is slidably connected to the positioning block 32. A lead screw 34 is threadedly connected to the locking block 33, and the lead screw 34 is rotatably connected to the positioning block 32.

[0031] It should be noted that when the ceramic substrate is installed in the substrate groove 11, the locking block 33 needs to be lifted, and then the locking block 33 is adjusted by the lead screw 34 to position the copper plate above the ceramic substrate.

[0032] The hinge structure between the positioning block 32 and the positioning plate 31 adopts a damped hinge, which prevents the positioning block 32 from moving easily, improves the adhesion to the ceramic substrate, and ensures that the positioning block 32 does not spring back during the printing process after being adjusted to the correct position.

[0033] Furthermore, by lifting the clearance structure of the locking block 33, it is ensured that the ceramic substrate can be inserted into the substrate slot 11 without interference; the locking block 33 fine adjustment mechanism driven by the lead screw 34 realizes the positioning of the copper plate, and at the same time, the height of the positioning structure is required to be lower than the height of the copper plate to prevent the printing from damaging the positioning component 3.

[0034] Specifically, a clearance groove 13 is provided on the base 1, and a connecting rod 35 is fixedly connected between the horizontal plate 21 and the positioning plate 31. The connecting rod 35 is disposed in the clearance groove 13.

[0035] Furthermore, the positioning component 3 and the adjustment component 2 are linked by the connecting rod 35 to achieve synchronous movement, thereby improving the processing accuracy and efficiency of the copper plates on both sides of the double-sided copper-clad ceramic substrate, controlling the misalignment between the upper and lower copper plates and the ceramic substrate, suppressing substrate warping, and preventing printing offset.

[0036] Working principle: In use, first, move the clamping plate 22 to place the bottom copper plate in the copper plate groove 12. Rotate the knob 4, and the double-sided thread of the threaded rod 23 will drive the two horizontal plates 21 to clamp inward. When the copper plate is in contact, stop rotating and put the ceramic substrate into the substrate groove 11. After locking the positioning block 32 to prevent the upper copper plate from being inserted, rotate the screw to make the locking block 33 fit with the copper plate. Then printing can be performed. When using it again, just lift the positioning block 32 to take out the product. The set position of the horizontal plate 21 and the position of the locking block 33 can prevent misalignment when the product is put in again.

[0037] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A double-sided copper clad ceramic substrate positioning fixture comprising a base (1), characterized in that: A substrate groove (11) is provided on the substrate (1), and a copper plate groove (12) is provided on the substrate (1). The substrate groove (11) and the copper plate groove (12) are connected. The substrate groove (11) and the copper plate groove (12) are distributed vertically. The substrate groove (11) and the copper plate groove (12) are concentric. An adjustment component (2) is provided in the copper plate groove (12) for adjusting the fitting size of the copper plate groove (12). A positioning component (3) is provided on the substrate (1). The positioning component (3) moves synchronously with the adjustment component (2). The positioning component (3) is used to position the upper copper plate.

2. The double-sided copper-clad ceramic substrate positioning tooling fixture of claim 1, wherein: The adjustment component (2) includes a horizontal plate (21), which is disposed inside the copper plate groove (12). There are two horizontal plates (21), which are symmetrically distributed. A clamping plate (22) is provided on the horizontal plate (21), and the clamping plate (22) is set at a right angle to the horizontal plate (21).

3. The double-sided copper-clad ceramic substrate positioning fixture of claim 2, wherein: The horizontal plate (21) is slidably connected to the base (1), and a threaded rod (23) is provided between the two horizontal plates (21). The threaded rod (23) is rotatably connected to the base (1). The threaded rod (23) is provided with bidirectional threads. The threaded rod (23) is threadedly connected to the two horizontal plates (21) respectively. A knob (4) is provided at one end of the threaded rod (23).

4. The double-sided copper-clad ceramic substrate positioning fixture of claim 3, wherein: The clamping plate (22) is slidably connected to the horizontal plate (21). A spring (24) is provided inside the horizontal plate (21). One end of the spring (24) is fixedly connected to the clamping plate (22), and the other end of the spring (24) is fixedly connected to the horizontal plate (21).

5. The double-sided copper clad ceramic substrate positioning fixture of claim 2, wherein: The positioning component (3) includes a positioning plate (31), which is slidably connected to the base (1). A positioning block (32) is hinged on the positioning plate (31), and a locking block (33) is slidably connected on the positioning block (32). A lead screw (34) is threadedly connected to the locking block (33), and the lead screw (34) is rotatably connected to the positioning block (32).

6. The double-sided copper clad ceramic substrate positioning fixture of claim 5, wherein: An avoidance groove (13) is provided on the base (1), and a connecting rod (35) is fixedly connected between the horizontal plate (21) and the positioning plate (31). The connecting rod (35) is set in the avoidance groove (13).

Images