Flatness detection jig

Abstract

The utility model discloses a flatness detection tool comprising a supporting plate, an air chamber plate is installed at the lower end of the inner wall of the supporting plate, a threaded installation block is installed on the inner wall of a threaded installation groove in a screwed mode, a lifting groove is fixedly connected to the upper end of the threaded installation block, and a second connecting spring is vertically and fixedly connected to the lower end of the inner wall of the lifting groove. And the upper end of the second connecting spring is fixedly connected with a lifting inserting block. According to the flatness detection jig, adsorption can be carried out through the product adsorption plate and the air chamber plate, when the flatness is not good, air leakage sound can be generated, sound can be efficiently collected through the sound collector, the detection effect is better, covering protection can be carried out through the protective cover, external influences are avoided, and the detection efficiency is improved. And insertion limiting locking can be conducted through a positioning pin block, a first connecting spring and a limiting protruding block, disassembly and assembly are convenient, the positioning pin block and the limiting protruding block can be driven to conduct lifting adjustment through a second connecting spring and a lifting insertion block, the material conveying device is suitable for materials of different thicknesses, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of flatness testing technology, specifically a flatness testing fixture. Background Technology

[0002] After the circuit board is manufactured, the workpiece needs to be inspected. For some workpieces, the surface flatness requirements are higher, so the surface flatness inspection is more important.

[0003] A flatness inspection fixture, CN201920614916.4, can intuitively determine whether the inspected workpiece is within the specified tolerance range by setting up an elastic detection unit, thus greatly facilitating the inspection work, significantly improving inspection efficiency, and saving time and effort. However, it has shortcomings: the existing equipment has poor inspection effect, poor protection, poor workpiece positioning effect, and is inconvenient to use. Therefore, a flatness inspection fixture is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a flatness testing fixture to solve the problems mentioned in the background art, such as poor testing effect, poor protection, poor workpiece positioning effect, and inconvenience of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flatness testing fixture, comprising a support plate, an air chamber plate installed on the lower end of the inner wall of the support plate, and a product adsorption plate connected to the upper end of the air chamber plate; a connecting hinge installed on the rear side of the upper end of the support plate, and a protective cover installed on the other side of the connecting hinge; a threaded mounting groove is formed on the upper edge of the support plate, and auxiliary threaded mounting grooves are distributed on one side of the threaded mounting groove; a threaded mounting block is screwed onto the inner wall of the threaded mounting groove, and a lifting groove is fixedly connected to the upper end of the threaded mounting block; a second connecting spring is vertically fixedly connected to the lower end of the inner wall of the lifting groove, and a lifting insert is fixedly connected to the upper end of the second connecting spring; a positioning pin is fixedly connected to the upper end of the lifting insert. Furthermore, a first telescopic groove is provided on both sides of the positioning pin block, a first connecting spring is installed on the inner wall of the first telescopic groove, and a limit protrusion is fixedly connected to one end of the first connecting spring. A splicing slot is provided at the center of the front side of the upper end of the support plate, and a splicing plug is inserted into the inner wall of the splicing slot. A sound collector is fixedly connected to the upper end of the splicing plug, and a connecting wire is electrically connected to the lower end of the sound collector. A wire insertion hole is connected to the center of the lower end of the splicing slot, and the wire insertion hole is distributed through the front side of the support plate. The connecting wire is inserted into the wire insertion hole, and a second telescopic groove is provided on the upper end of both sides of the inner wall of the wire insertion hole. A third connecting spring is installed on the inner wall of the second telescopic groove, and a locking block is fixedly connected to one end of the third connecting spring.

[0006] Preferably, the product adsorption plates are concentrically distributed on the inner wall of the support plate, and the surface of the product adsorption plates has a matrix through-hole structure. The product adsorption plates and the air chamber plate are connected by suction.

[0007] Preferably, the upper end of the positioning pin block has a pointed structure, and the positioning pin block and the lifting groove are screwed together with the auxiliary threaded mounting groove and the threaded mounting groove through the threaded mounting block, and the auxiliary threaded mounting groove and the threaded mounting groove are distributed in parallel.

[0008] Preferably, the positioning pin block is elastically connected to the lifting groove via a second connecting spring and a lifting insert, the limiting protrusion is an elastic structure, and the limiting protrusion is elastically connected to the first telescopic groove via a first connecting spring.

[0009] Preferably, the protective cover is made of transparent acrylic material, and the protective cover is installed on the support plate by means of a hinge in a flip-top manner, and the shape of the lower end of the protective cover matches the shape of the upper end of the support plate.

[0010] Preferably, the sound acquisition device is installed in a plug-in manner with the support plate via a splicing slot and splicing plug, and the connecting wire is installed in a limiting plug-in manner with the support plate via a locking block and wire insertion hole, and the locking block is elastically telescopically connected to the second telescopic groove via a third connecting spring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This flatness testing fixture can be adsorbed by the product adsorption plate and the air chamber plate. When the flatness is not good, there will be air leakage sound. The sound can be collected efficiently by the sound collector, resulting in better testing effect. It can also be protected by the protective cover to avoid external influence. It can be locked by the positioning pin, the first connecting spring and the limiting protrusion, which is convenient for disassembly and assembly. Furthermore, the positioning pin and the limiting protrusion can be adjusted by the second connecting spring and the lifting plug to adapt to materials of different thicknesses, resulting in excellent performance. Attached Figure Description

[0012] Figure 1 This is a top view of a flatness testing fixture according to the present invention;

[0013] Figure 2 This is a schematic diagram of the internal structure of a flatness testing fixture according to the present invention;

[0014] Figure 3 This utility model relates to a flatness testing fixture. Figure 1 Enlarged view of point A in the middle;

[0015] Figure 4 This utility model relates to a flatness testing fixture. Figure 2 Enlarged view at point B in the middle;

[0016] Figure 5 This utility model relates to a flatness testing fixture. Figure 2 Enlarged view at point C;

[0017] Figure 6 This utility model relates to a flatness testing fixture. Figure 2 Enlarged view of point D in the middle.

[0018] In the diagram: 1. Support plate, 2. Product adsorption plate, 3. Positioning pin block, 4. Protective cover, 5. Sound collector, 6. Connecting wire, 7. Air chamber plate, 8. Auxiliary threaded mounting groove, 9. Connecting hinge, 10. First telescopic groove, 11. First connecting spring, 12. Limiting protrusion, 13. Lifting groove, 14. Threaded mounting groove, 15. Threaded mounting block, 16. Second connecting spring, 17. Lifting insert, 18. Splicing slot, 19. Splicing insert, 20. Locking stop, 21. Wire insertion hole, 22. Third connecting spring, 23. Second telescopic groove. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-6 This utility model provides a technical solution: a flatness testing fixture, including a support plate 1, a product adsorption plate 2, a positioning pin block 3, a protective cover 4, a sound collector 5, a connecting wire 6, an air chamber plate 7, an auxiliary threaded mounting groove 8, a connecting hinge 9, a first telescopic groove 10, a first connecting spring 11, a limiting protrusion 12, a lifting groove 13, a threaded mounting groove 14, a threaded mounting block 15, a second connecting spring 16, a lifting insert 17, a splicing slot 18, a splicing insert 19, a locking block 20, a wire insertion hole 21, a third connecting spring 22, and a second telescopic groove 23. The air chamber plate 7 is installed at the lower end of the inner wall of the support plate 1, and the product adsorption plate 2 is connected to the upper end of the air chamber plate 7. The product adsorption plate 2 is concentrically distributed on the inner wall of the support plate 1, and the surface of the product adsorption plate 2 has a matrix through-hole structure. The product adsorption plate 2 and the air chamber plate 7 are connected by suction, which makes the product adsorption plate 2 and the air chamber plate 7 stably adsorbed, resulting in good testing effect.

[0021] A connecting hinge 9 is installed on the rear side of the upper end of the support plate 1, and a protective cover 4 is installed on the other side of the connecting hinge 9. The protective cover 4 is made of transparent acrylic material, and the protective cover 4 is installed with the support plate 1 in a flip-over manner through the connecting hinge 9. The shape of the lower end of the protective cover 4 matches the shape of the upper end of the support plate 1, so that the protective cover 4 can easily cover the support plate 1 completely, so as to achieve a protective effect and avoid external influence.

[0022] The upper edge of the support plate 1 is provided with a threaded mounting groove 14, and an auxiliary threaded mounting groove 8 is distributed on one side of the threaded mounting groove 14. A threaded mounting block 15 is screwed onto the inner wall of the threaded mounting groove 14, and a lifting groove 13 is fixedly connected to the upper end of the threaded mounting block 15. A second connecting spring 16 is vertically fixedly connected to the lower end of the inner wall of the lifting groove 13, and a lifting insert 17 is fixedly connected to the upper end of the second connecting spring 16. A positioning pin 3 is fixedly connected to the upper end of the lifting insert 17, and a first telescopic groove 10 is provided on both sides of the positioning pin 3. The upper end of the positioning pin 3 is a pointed structure, and the positioning pin 3 and the lifting groove 13 are screwed onto the auxiliary threaded mounting groove 8 and the threaded mounting groove 14 through the threaded mounting block 15. The auxiliary threaded mounting groove 8 and the threaded mounting groove 14 are distributed in parallel, which makes it easy for the positioning pin 3 to be locked by the insertion of the limiting protrusion 12, ensuring stable installation. The positioning pin 3 is also easy to adjust, screw on, disassemble, and reassemble quickly.

[0023] The positioning pin 3 is elastically connected to the lifting groove 13 via the second connecting spring 16 and the lifting insert 17. The limiting protrusion 12 is an elastic structure, and the limiting protrusion 12 is elastically connected to the first telescopic groove 10 via the first connecting spring 11. This allows the positioning pin 3 to be easily adjusted for elastic lifting, improving adaptability. The first connecting spring 11 is installed on the inner wall of the first telescopic groove 10, and one end of the first connecting spring 11 is fixedly connected to the limiting protrusion 12. A splicing slot 18 is provided at the center of the front side of the upper end of the support plate 1, and the inner wall of the splicing slot 18 is inserted. The device is equipped with a splicing plug 19, with a sound collector 5 fixedly connected to the upper end of the splicing plug 19. The lower end of the sound collector 5 is electrically connected to a connecting wire 6. The sound collector 5 is installed in a plug-in manner with the support plate 1 through the splicing slot 18 and the splicing plug 19. The connecting wire 6 is installed in a limited plug-in manner with the support plate 1 through the locking block 20 and the wire insertion hole 21. The locking block 20 is elastically telescopically connected to the second telescopic groove 23 through the third connecting spring 22. This makes it easy to quickly assemble and disassemble the sound collector 5, facilitates the collection of air leakage sounds, and provides excellent detection results.

[0024] The lower center of the splicing slot 18 is connected to a wire insertion hole 21, and the wire insertion hole 21 is distributed through the front side of the support plate 1. The connecting wire 6 is inserted into the wire insertion hole 21. The upper ends of both sides of the inner wall of the wire insertion hole 21 are provided with a second telescopic groove 23. A third connecting spring 22 is installed on the inner wall of the second telescopic groove 23, and a locking block 20 is fixedly connected to one end of the third connecting spring 22.

[0025] Working principle: When using this flatness testing fixture, firstly, the support plate 1 of the device is installed and fixed. Then, the product is placed on the support plate 1 and inserted into the positioning pin 3. Next, it is locked by the limiting protrusion 12. Then, the protective cover 4 is flipped over and closed. Then, the air chamber plate 7 is vented, and the product is adsorbed by the product adsorption plate 2. Then, the sound is collected by the sound collector 5. When there is a sound of air leakage, it indicates that the flatness of the product is not up to standard. When the thickness of the product is different, the positioning pin 3 and the limiting protrusion 12 can be elastically adjusted by the second connecting spring 16 and the lifting plug 17. When the position needs to be adjusted, the position can be adjusted by the auxiliary threaded mounting groove 8 and the threaded mounting block 15. When the sound collector 5 needs to be replaced, it can be disassembled and installed by the splicing slot 18 and the splicing plug 19. The connecting wire 6 is limited and installed by the locking block 20 and the wire insertion hole 21 for quick adaptation. This is the usage process of this flatness testing fixture.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flatness detection jig, comprising a support plate (1), a gas chamber plate (7) is installed at the lower end of the inner wall of the support plate (1), and a product adsorption plate (2) is installed in communication at the upper end of the gas chamber plate (7), characterized in that: The upper end rear side of the support plate (1) is provided with a connecting hinge (9), and the other side of the connecting hinge (9) is reversely provided with a protective cover (4); the upper end edge of the support plate (1) is provided with a threaded mounting groove (14), and the threaded mounting groove (14) is provided with an auxiliary threaded mounting groove (8) on one side; a threaded mounting block (15) is screw-mounted on the inner wall of the threaded mounting groove (14), and the threaded mounting block (15) is fixedly connected with a lifting groove (13) on the upper end; a second connecting spring (16) is fixedly connected with a lifting plug-in block (17) on the upper end of the lifting groove (13); the lifting plug-in block (17) is fixedly connected with a positioning pin block (3) on the upper end, and the positioning pin block (3) is provided with a first telescopic groove (10) on both sides; a first connecting spring (11) is mounted on the inner wall of the first telescopic groove (10), and the first connecting spring (11) is fixedly connected with a limiting protrusion (12) on one end; a splicing plug-in groove (18) is provided on the front side of the support plate (1) at the center position of the upper end, and a splicing plug-in block (19) is plug-in mounted on the inner wall of the splicing plug-in groove (18); the splicing plug-in block (19) is fixedly connected with a sound collector (5) on the upper end, and the sound collector (5) is electrically connected with a connecting lead wire (6) on the lower end; a lead wire jack (21) is communicated with the splicing plug-in groove (18) at the center position of the lower end, and the lead wire jack (21) is distributed through the front side of the support plate (1); the connecting lead wire (6) is plug-in distributed with the lead wire jack (21), and the inner wall of the lead wire jack (21) is provided with a second telescopic groove (23) on both sides of the upper end; a third connecting spring (22) is mounted on the inner wall of the second telescopic groove (23), and the third connecting spring (22) is fixedly connected with a locking block (20) on one end.

2. The flatness detection fixture of claim 1, wherein: The product adsorption plate (2) is concentrically distributed on the inner wall of the support plate (1), and the surface of the product adsorption plate (2) is a matrix through-hole structure; the product adsorption plate (2) is connected in suction communication with the air chamber plate (7).

3. The flatness detection fixture of claim 2, wherein: The upper end of the positioning pin block (3) is a sharp structure, and the positioning pin block (3) and the lifting groove (13) are screw-jointedly installed with the auxiliary threaded mounting groove (8) and the threaded mounting groove (14) through the threaded mounting block (15); the auxiliary threaded mounting groove (8) and the threaded mounting groove (14) are in parallel distribution.

4. The flatness detection fixture of claim 3, wherein: The positioning pin block (3) is elastically connected with the lifting groove (13) through the second connecting spring (16) and the lifting plug-in block (17); the limiting protrusion (12) is an elastic structure, and the limiting protrusion (12) is elastically connected with the first telescopic groove (10) through the first connecting spring (11).

5. The flatness detection fixture of claim 4, wherein: The protective cover (4) is made of transparent acrylic material, and the protective cover (4) is reversely cover-installed with the support plate (1) through the connecting hinge (9); the shape of the lower end of the protective cover (4) matches the shape of the upper end of the support plate (1).

6. The flatness detection fixture of claim 5, wherein: The sound collector (5) is installed in the support plate (1) through the splicing slot (18) and the splicing block (19), the connecting wire (6) is installed in the support plate (1) through the locking block (20) and the wire insertion hole (21), and the locking block (20) is elastically connected with the second expansion slot (23) through the third connecting spring (22).

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