Positioning fixture for PVD (Physical Vapor Deposition) coated product

Abstract

The utility model relates to a positioning fixture for a PVD (Physical Vapor Deposition) coated product, the fixture comprises a bottom plate, a moving block, a limiting plate and an adjusting part, and the limiting plate is detachably connected to the bottom plate; a sliding cavity and at least one product placing groove are formed in the limiting plate, the sliding cavity communicates with the product placing groove, and the moving block is placed in the sliding cavity; at least one stop block is arranged at the position, matched with the product containing groove, of the first end of the moving block, and the sliding cavity communicates with at least one first adjusting counter bore formed in the limiting plate. The adjusting part is inserted into the first adjusting counter bore so that the adjusting part can extrude the moving block in the direction of the product containing groove. The device is easy to operate, does not easily break products, and is applied to the field of precise instrument manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of precision instrument manufacturing, and in particular to a positioning fixture for PVD coated products. Background Technology

[0002] During product processing, such as chip coating, the product needs to be fixed in place. For some products with brittle structures or small sizes, such as optical chips made of Si or SiO2, existing fixtures are complex to operate and are prone to breakage. Utility Model Content

[0003] In view of this, the purpose of this utility model embodiment is to provide a positioning fixture for PVD coated products, which is simple to operate and does not easily damage the product.

[0004] To solve one of the above problems, the present invention provides a positioning fixture for PVD coated products. The fixture includes a base plate, a moving block, a limiting plate, and an adjusting component. The limiting plate is detachably connected to the base plate.

[0005] The limiting plate is provided with a sliding cavity and at least one product placement slot. The sliding cavity is connected to the product placement slot, and the moving block is placed in the sliding cavity.

[0006] At least one stop is provided at the position where the first end of the movable block mates with the product placement slot, and the sliding cavity communicates with at least one first adjustment countersunk hole provided on the limiting plate; the adjustment component is inserted into the first adjustment countersunk hole such that the adjustment component presses the movable block toward the product placement slot.

[0007] Optionally, the second end of the moving block opposite to the first end forms a first inclined surface that is inclined toward the first end, and the upper part of the adjusting component is configured as a second inclined surface. The positions where the first inclined surface and the second inclined surface contact each other have the same inclination direction.

[0008] Optionally, the first inclined plane and the second inclined plane have the same inclination.

[0009] Optionally, the tilt angle ranges from 10° to 80°.

[0010] Optionally, a second adjusting countersunk hole is provided on the base plate at the same position as the first adjusting countersunk hole.

[0011] Optionally, the inner wall of the product placement slot and / or the end face of the stop block facing the product placement slot are provided with at least one layer of gasket.

[0012] Optionally, at least one layer of adhesive may be included between the inner wall of the product placement slot and / or the end face of the stop block facing the product placement slot.

[0013] Optionally, the base plate and the limiting plate are provided with positioning through holes in the same position.

[0014] Optionally, the sliding cavity is provided with a limiting part, which is disposed between the first end and the second end of the moving block.

[0015] Optionally, the base plate is provided with at least one external connection through hole.

[0016] This invention offers the following advantages: A sliding cavity is connected to a product placement slot, and the sliding cavity is connected to a first adjusting countersunk hole. When the adjusting component is inserted into the first adjusting countersunk hole, it compresses the moving block in the sliding cavity, causing the moving block to move towards the product placement slot. This allows the stop block on the moving block to enter the product placement slot, pressing the product in the slot and securing it. Throughout the process, the vertical movement of the adjusting component is converted into the horizontal movement of the moving block, making operation convenient and eliminating the need for repeated adjustments that could damage the product. The vertical adjustment is converted into a horizontal micro-displacement through inclined planes or threaded linkages. Combined with multiple adjustment points, this achieves uniform pressure, preventing product damage caused by localized stress concentration. Attached Figure Description

[0017] Wherein: 1-base plate, 2-moving block, 3-limiting plate, 4-adjusting component, 5-product, 11-second adjusting countersunk hole, 12-external connection through hole, 21-stop block, 22-first inclined surface, 23-first end, 24-second end, 31-sliding cavity, 32-product placement slot, 33-first adjusting countersunk hole, 34-positioning through hole, 35-limiting part, 41-second inclined surface.

[0018] Figure 1 This is a diagram of a positioning fixture assembly for a PVD coated product provided by this utility model;

[0019] Figure 2 This is an exploded view of a positioning fixture for a PVD coated product provided by this utility model;

[0020] Figure 3 This is a cross-sectional view of the positioning fixture assembly for a PVD coated product provided by this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a movable block provided by this utility model;

[0022] Figure 5 This is a structural schematic diagram of a limiting plate provided by this utility model;

[0023] Figure 6This is a schematic diagram of the structure of a base plate provided by this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of an adjustment component provided by this utility model. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. The terms "above" and other designations used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0027] It is worth noting that the term "A and / or B" used in this invention can mean A, B, or both A and B.

[0028] Please see Figure 1-4 , Figure 1 This is a diagram of a positioning fixture assembly for a PVD coated product. Figure 2 This is an exploded view of a positioning fixture for a PVD coated product. Figure 3 This is a cross-sectional view of the positioning fixture assembly for a PVD coated product. Figure 4 This is a schematic diagram of the structure of a movable block 2. This embodiment provides a positioning fixture for a PVD coated product. The fixture includes a base plate 1, a movable block 2, a limiting plate 3, and an adjusting component 4. The limiting plate 3 is detachably connected to the base plate 1.

[0029] The limiting plate 3 is provided with a sliding cavity 31 and at least one product placement slot 32. The sliding cavity 31 is connected to the product placement slot 32, and the moving block 2 is placed in the sliding cavity 31.

[0030] At least one stop 21 is provided at the position where the first end 23 of the movable block 2 cooperates with the product placement groove 32, and the sliding cavity 31 is connected to at least one first adjustment countersunk hole 33 provided on the limiting plate 3; the adjusting component 4 is inserted into the first adjustment countersunk hole 33, so that the adjusting component 4 presses the movable block 2 toward the product placement groove 32.

[0031] Specifically, the base plate 1 and the limiting plate 3 are designed separately and then assembled together. The upper frame and the lower frame are processed separately, and their surface flatness is of good quality, which can make the product more evenly fixed. The product placement slot 32 eliminates the transition R-corner design at the edge, making the product (such as a chip) more evenly installed and reducing the damage caused by the product edge hitting the R-corner.

[0032] The second end 24 of the movable block 2, opposite to the first end 23, forms a first inclined surface 22 that slopes towards the first end 23. The upper part of the adjusting component 4 is configured as a second inclined surface 41. The first inclined surface 22 and the second inclined surface 41 are in contact in the same direction of inclination. The inclination angles of the first inclined surface 22 and the second inclined surface 41 can also be different, as long as they provide a squeezing effect. The inclination angles of the first inclined surface 22 and the second inclined surface 41 range from 10° to 80°, preferably 60°.

[0033] like Figure 5 As shown, Figure 5 This is a schematic diagram of a limiting plate 3. The sliding cavity 31 is provided with a limiting part 35, which is located between the first end 23 and the second end 24 of the moving block 2, serving a limiting function. Figure 5-6 As shown, Figure 6 This is a structural schematic diagram of a base plate 1. Both the base plate 1 and the limiting plate 3 have identically positioned positioning through holes 34. These positioning through holes 34 can be, but are not limited to, holes for M3 screws, and the number can be, but is not limited to, one on each side of the base plate 1 and the limiting plate 3, for a total of eight. The base plate 1 and the limiting plate 3 are aligned through the positioning through holes 34 and fixed by screws passing through the positioning through holes 34.

[0034] like Figure 7 As shown, Figure 7 This is a schematic diagram of an adjusting component 4. The adjusting component 4 can be, but is not limited to, a screw or other insert. The top surface of the adjusting component 4 can be provided with a cross groove or a slot to facilitate the insertion of the adjusting component 4 into the first adjusting countersunk hole 33. When there is one adjusting component 4, both the adjusting component 4 and the first adjusting countersunk hole 33 are located in the middle; when there are two or more adjusting components 4, the adjusting components 4 and the first adjusting countersunk hole 33 can be evenly distributed or unevenly distributed.

[0035] The adjusting component 4 is inserted into the first adjusting countersunk hole 33. The moving distance of the moving block 2 in the sliding cavity 31, taking an adjusting component 4 with two screws as an example, is calculated as follows:

[0036] The screw pitch is P, and the inclination of the first inclined plane 22 and the second inclined plane 41 is α. When the screw rotates one revolution, the screw moves down by P. Then, when it rotates N revolutions, the distance S it moves is as shown in formula (1):

[0037] S=N*P*cotα (1)

[0038] Where cot represents the cotangent function.

[0039] Taking α = 60°, P = 0.7 mm, and N = 1 as an example, substituting into formula (1),

[0040] like Figure 2 As shown, at least one layer of gasket is provided on the inner wall of the product placement slot 32 and / or the end face of the stop 21 facing the product placement slot 32, which can effectively protect the product and prevent damage during clamping. At least one layer of adhesive is included between the gasket and the inner wall of the product placement slot 32 and / or the end face of the stop 21 facing the product placement slot 32, the adhesive being used to adhere the gasket. Both the gasket and the adhesive are made of high-temperature resistant materials with a temperature resistance range of 50-100℃; the gasket may be, but is not limited to, silicone rubber.

[0041] In some embodiments, such as Figure 6 As shown, a second adjusting countersunk hole 11 is provided on the base plate 1 at the same position as the first adjusting countersunk hole 33. The second adjusting countersunk hole 11 can increase the range of motion of the adjusting component 4, thereby increasing the moving distance of the moving block 2. At least one external connection through hole 12 is provided on the base plate 1, through which the fixture is fixed to the processing equipment.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning jig for a PVD coating product, characterized in that, The clamp includes a base plate, a moving block, a limiting plate, and an adjusting component, wherein the limiting plate is detachably connected to the base plate; The limiting plate is provided with a sliding cavity and at least one product placement slot. The sliding cavity is connected to the product placement slot, and the moving block is placed in the sliding cavity. At least one stop is provided at the position where the first end of the movable block mates with the product placement slot, and the sliding cavity communicates with at least one first adjustment countersunk hole provided on the limiting plate; the adjustment component is inserted into the first adjustment countersunk hole such that the adjustment component presses the movable block toward the product placement slot.

2. The clamp of claim 1, wherein The second end of the moving block, which is opposite to the first end, forms a first inclined surface that is inclined toward the first end. The upper part of the adjusting component is configured as a second inclined surface. The positions where the first inclined surface and the second inclined surface contact each other have the same inclination direction.

3. The clamp of claim 2, wherein The first inclined plane and the second inclined plane have the same inclination.

4. The clamp of claim 3, wherein The tilt angle ranges from 10° to 80°.

5. The clamp of claim 1, wherein A second adjustment countersunk hole is provided on the base plate at the same position as the first adjustment countersunk hole.

6. The clamp of any one of claims 1-5, wherein, The inner wall of the product placement slot and / or the end face of the stop block facing the product placement slot are provided with at least one layer of gasket.

7. The clamp of claim 6, wherein The gasket comprises at least one layer of adhesive between itself and the inner wall of the product placement slot and / or the end face of the stop block facing the product placement slot.

8. The clamp of any one of claims 1-5, wherein, The base plate and the limiting plate are provided with positioning through holes in the same position.

9. The clamp of any one of claims 2-4, wherein, The sliding cavity is provided with a limiting part, which is located between the first end and the second end of the moving block.

10. The clamp of any one of claims 1-5, wherein, The base plate is provided with at least one external connection through hole.

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