CN214111271U

CN214111271U - Pneumatic positioning device

Info

Publication number: CN214111271U
Application number: CN202022534131.1U
Authority: CN
Inventors: 单克为; 金奇话; 李泰万
Original assignee: Sanjin Optoelectronic Suzhou Co ltd
Current assignee: Sanjin Optoelectronic Suzhou Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-09-03
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a pneumatic positioning device, which comprises a main body positioning column, wherein the bottom of the main body positioning column is provided with a lower mold core, one side of a connecting rod, which is far away from the main body positioning column, is provided with a lower fixing plate, one side of the connecting rod is provided with a first air hole, and one side of an annular fixing block is provided with a second air hole; this pneumatic positioner, through setting up metal chassis, chassis locating hole, lower core, second gas pocket, annular ejector pad, connecting rod, reference column and third gas pocket, because of chassis locating hole and the reference column cooperation location on the metal chassis, and unilateral clearance 0.02 millimeter, breathe in because of first gas pocket and produce the negative pressure when metal chassis and lower core surface contact, the metal chassis is fixed on the core down, ensures that the product full size is in the tolerance range. When the product is ejected after being formed, the positioning hole on the metal chassis is not interfered with the positioning column, and the poor pressing damage and ejection pull damage of the finished product positioning hole are avoided.

Description

Pneumatic positioning device

Technical Field

The utility model relates to a location technical field specifically is a pneumatic positioner.

Background

In order to improve the competitiveness of the display products on the market, such as notebook display screens, tablet computers and the like, the novel products are required to be light in weight and thin in thickness during development. The liquid crystal display comprises a liquid crystal panel and a backlight module, wherein the backlight module comprises a metal chassis, a plastic frame, a light source, a radiating fin, a light guide plate, an optical diaphragm and the like. In order to make the metal chassis and the plastic frame in the backlight module thinner, the metal chassis and the plastic frame are manufactured by adopting an integral forming process.

The metal chassis is formed by punching a metal plate through punching equipment. Integrally molding the rubber and the iron: and after the mold is opened, the metal chassis is arranged in the mold, and the mold is closed and injected to wrap the plastic frame on the metal chassis, and the mold is cooled by water and then taken out.

The prior art has the following defects or problems:

the traditional positioning device has the tolerance of +/-0.15 mm of the external dimension of a product and the tolerance of +/-0.1 mm of the position dimension of a part. The positioning tolerance of the metal chassis and the mould is required to be less than +/-0.05 mm. The mold is positioned by more than 2 positioning columns, and when the unilateral clearance between the positioning columns and the positioning holes of the metal chassis is less than 0.03, the finished product positioning holes are damaged by pressure, and the ejection pull defect rate is 30%. When the unilateral clearance between the positioning column and the positioning hole of the metal chassis is more than 0.06, the defective rate of the finished product positioning hole is crushed and the defective rate of the ejection pull is 0, but the defective rate of the product size tolerance plus or minus 0.1 mm part size is 25%.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic positioner to prior art's weak point, solve the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a pneumatic positioning device comprises a main body positioning column, wherein a lower mold core is arranged at the bottom of the main body positioning column, a connecting rod is arranged on one side, close to the main body positioning column, of the lower mold core, a lower fixing plate is arranged on one side, away from the main body positioning column, of the connecting rod, an annular fixing block is arranged at the bottom of the lower fixing plate, an annular push block is arranged on one side, close to the lower fixing plate, of the annular fixing block, a first air hole is formed in one side of the connecting rod, a second air hole is formed in one side of the annular fixing block, a third air hole is formed in one side, close to the second air hole, of the annular push block, a fourth air hole is formed in one side, close to the annular fixing block, of the annular push block is provided with a fifth air hole, an inner hexagonal plug screw, one side that the annular fixed block is close to the fourth gas pocket is provided with first sealing washer, one side that the annular fixed block is close to first sealing washer is provided with the second sealing washer, one side that the second sealing washer was kept away from to the annular fixed block is provided with the third sealing washer, one side that the annular ejector pad is close to the annular fixed block is provided with the fourth sealing washer, one side that the end cover is close to the annular fixed block is provided with the fifth sealing washer.

As the utility model discloses a preferred technical scheme, the top of main part reference column is provided with metal chassis, metal chassis's appearance is the cuboid.

As the utility model discloses an optimized technical scheme, the inside on metal chassis is provided with the chassis locating hole, the external diameter of main part reference column is the same with the internal diameter of chassis locating hole size, main part reference column and chassis locating hole cooperation direction location.

As the utility model discloses an optimal technical scheme, the appearance of annular ejector pad is the annular, the material of annular ejector pad is steel, the annular ejector pad passes through connecting rod and main part reference column fixed connection.

As the utility model discloses a preferred technical scheme, annular ejector pad and connecting rod plug screw fixed connection, main part reference column and connecting rod bolt fixed connection.

As the utility model discloses an optimal technical scheme, the appearance of end cover is the cylinder, the material of end cover is steel, the end cover is fixed with the cooperation of annular fixed block terminal surface, the appearance of annular fixed block is the annular, the material of annular fixed block is steel.

As the utility model discloses an optimal technical scheme, the hexagon socket head cap screw is fixed on annular ejector pad, the bottom of end cover is provided with hexagon socket head cap screw, on the fixed bottom plate of hexagon socket head cap screw.

Compared with the prior art, the utility model provides a pneumatic positioner possesses following beneficial effect:

according to the pneumatic positioning device, the metal chassis, the chassis positioning hole, the lower mold core, the second air hole, the annular push block, the connecting rod, the positioning column and the third air hole are arranged, and the injection molding machine equipment enables the front mold and the rear mold of the mold to be opened, so that the metal chassis is installed on the lower mold core. The chassis locating hole on the metal chassis is matched and positioned with the positioning column, the unilateral clearance is 0.02 mm, when the metal chassis is contacted with the surface of the lower mold core, negative pressure is generated due to air suction of the first air hole, and the metal chassis is fixed on the lower mold core. The second air hole is filled with air to push the annular push block to move downwards, the annular push block drives the connecting rod and the positioning column to move downwards, and the positioning column moves into the lower core. The positioning column is separated from the positioning hole on the metal chassis. And closing the front mold and the rear mold of the mold by the injection molding machine equipment, introducing water to cool the mold after injection molding, and taking out the product. The third air hole is filled with air to push the annular push block to move the annular push block upwards so as to drive the connecting rod and the positioning column to move upwards. And the positioning column moves out of the surface of the lower core, and the action is finished. Because the positioning column is arranged on the lower mold core on the metal chassis and then moves into the lower mold core. When the product is ejected after being formed, the positioning hole on the metal chassis and the positioning column do not interfere with each other, so that the pressing damage and the pulling damage of the finished product positioning hole are avoided. Because the chassis locating hole on the metal chassis is matched and positioned with the locating column, the unilateral clearance is 0.02 mm. Ensuring that the full size of the product is within the tolerance range.

Drawings

FIG. 1 is a schematic view of a prior art mold positioning;

FIG. 2 is a schematic view of a pneumatic positioning apparatus of the present invention with a positioning post moved out of a lower core;

fig. 3 is a schematic diagram illustrating a positioning column of a pneumatic positioning device moving into a lower core according to the present invention.

In the figure: 10. a main body positioning column; 11. a lower mold core; 12. a connecting rod; 13. a fixing plate; 20. An annular fixed block; 21. an annular push block; 22. an inner hexagonal plug screw; 23. an end cap; 24. a hexagon socket head cap screw; 30. a first air hole; 31. a second air hole; 32. a third air hole; 20A, a fourth air hole; 20B, a fifth air hole; 40. a first seal ring; 41. a second seal ring; 42. a third seal ring; 43. a fourth seal ring; 44. a fifth seal ring; 50. a metal chassis; 51. and (6) positioning holes of the chassis.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in this embodiment: a pneumatic positioning device comprises a main body positioning column 10, a lower core 11 is arranged at the bottom of the main body positioning column 10, a connecting rod 12 is arranged at one side of the lower core 11 close to the main body positioning column 10, a lower fixing plate 13 is arranged at one side of the connecting rod 12 far away from the main body positioning column 10, an annular fixing block 20 is arranged at the bottom of the lower fixing plate 13, an annular push block 21 is arranged at one side of the annular fixing block 20 close to the lower fixing plate 13, a first air hole 30 is arranged at one side of the connecting rod 12, a second air hole 31 is arranged at one side of the annular fixing block 20, a third air hole 32 is arranged at one side of the annular fixing block 20 close to the second air hole 31, a fourth air hole 20A is arranged at one side of the annular push block 21 close to the annular fixing block 20, a fifth air hole 20B is arranged at one side of the annular push block 21 close to the fourth air hole 20A, an inner hexagonal plug 22 is arranged at the bottom of the connecting rod 12, and an end cover 23 is arranged at one side of the inner hexagonal plug 22 far away from the connecting rod 12, a first sealing ring 40 is arranged on one side, close to the fourth air hole 20A, of the annular fixing block 20, a second sealing ring 41 is arranged on one side, close to the first sealing ring 40, of the annular fixing block 20, a third sealing ring 42 is arranged on one side, far away from the second sealing ring 41, of the annular fixing block 20, a fourth sealing ring 43 is arranged on one side, close to the annular fixing block 20, of the annular push block 21, and a fifth sealing ring 44 is arranged on one side, close to the annular fixing block 20, of the end cover 23.

In the embodiment, the top of the main body positioning column 10 is provided with the metal chassis 50, and the metal chassis 50 is cuboid in shape, so that the pneumatic positioning device is not easy to damage in a long-time use process; a chassis positioning hole 51 is formed in the metal chassis 50, the outer diameter of the main body positioning column 10 is the same as the inner diameter of the chassis positioning hole 51, and the main body positioning column 10 is matched with the chassis positioning hole 51 for guiding and positioning; the annular push block 21 is annular, the annular push block 21 is made of steel, and the annular push block 21 is fixedly connected with the main body positioning column 10 through the connecting rod 12, so that the annular push block 21 can drive the connecting rod 12 to move together with the main body positioning column 10; the annular push block 21 is fixedly connected with the connecting rod 12 through a screw plug, and the main body positioning column 10 is fixedly connected with the connecting rod 12 through a bolt; the end cover 23 is cylindrical, the end cover 23 is made of steel, the end cover 23 is matched and fixed with the end face of the annular fixing block 20, the annular fixing block 20 is annular, the annular fixing block 20 is made of steel, and the annular push block 21 can slide in the annular fixing block 20; the inner hexagonal plug 22 is fixed on the annular push block 21, the inner hexagonal bolt 24 is arranged at the bottom of the end cover 23, and the inner hexagonal bolt 24 is fixed on the lower fixing plate 13.

The utility model discloses a theory of operation and use flow: a pneumatic positioning device, an injection molding machine apparatus opens the front and rear molds of a mold and mounts a metal base plate 50 on a lower core 11. The chassis positioning hole 51 on the metal chassis 50 is matched and positioned with the main body positioning column 10, the single-side gap is 0.02 mm, when the metal chassis 50 is in surface contact with the lower mold core 11, negative pressure is generated due to air suction of the first air hole 30, and the metal chassis 50 is fixed on the lower mold core 11. The chassis positioning hole 51 on the metal chassis 50 is matched and positioned with the main body positioning column 10, and the single-side gap is 0.02 mm. When the metal base plate 50 is in contact with the surface of the lower core 11, negative pressure is generated by the suction of the first air hole 30, and the metal base plate 50 is fixed on the lower core 11. The gas enters through the second gas hole 31 and generates a pushing force to push the annular push block 21 to move downwards, the annular push block 21 drives the connecting rod 12 and the main body positioning column 10 to move downwards, and the main body positioning column 10 moves into the lower core 11. The main body positioning column 10 is separated from the chassis positioning hole 51 on the metal chassis 50. And closing the front mold and the rear mold of the mold by the injection molding machine equipment, opening the water-filled cooling mold after injection molding, and taking out the product. The gas enters from the second gas hole 31 and generates a pushing force to push the annular push block 21 to move upwards, and the annular push block 21 drives the connecting rod 12 and the main body positioning column 10 to move upwards. The main body positioning column 10 moves out of the surface of the lower core 11, and the operation is completed. The main body positioning column 10 moves into the lower mold core 11 after the metal chassis 50 is mounted on the lower mold core 11. When the product is ejected after being formed, the chassis positioning hole 51 on the metal chassis 50 has no interference with the main body positioning column 10, and the poor pressing damage and ejection pull damage of the finished product positioning hole are avoided. Because the chassis positioning hole 51 on the metal chassis 50 is matched and positioned with the main body positioning column 10, the single-side gap is 0.02 mm. Ensuring that the full size of the product is within the tolerance range.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic positioning device, characterized by: the device comprises a main body positioning column (10), wherein a lower core (11) is arranged at the bottom of the main body positioning column (10), a connecting rod (12) is arranged on one side, close to the main body positioning column (10), of the lower core (11), a lower fixing plate (13) is arranged on one side, far away from the main body positioning column (10), of the connecting rod (12), an annular fixing block (20) is arranged at the bottom of the lower fixing plate (13), an annular push block (21) is arranged on one side, close to the lower fixing plate (13), of the annular fixing block (20), a first air hole (30) is arranged on one side of the connecting rod (12), a second air hole (31) is arranged on one side of the annular fixing block (20), a third air hole (32) is arranged on one side, close to the second air hole (31), of the annular push block (21) is provided with a fourth air hole (20A), a fifth air hole (20B) is arranged on one side of the annular push block (21) close to the fourth air hole (20A), an inner hexagonal plug (22) is arranged at the bottom of the connecting rod (12), an end cover (23) is arranged on one side of the inner hexagonal plug (22) far away from the connecting rod (12), a first sealing ring (40) is arranged on one side of the annular fixing block (20) close to the fourth air hole (20A), a second sealing ring (41) is arranged on one side of the annular fixing block (20) close to the first sealing ring (40), a third sealing ring (42) is arranged on one side of the annular fixing block (20) far away from the second sealing ring (41), a fourth sealing ring (43) is arranged on one side of the annular push block (21) close to the annular fixed block (20), and a fifth sealing ring (44) is arranged on one side, close to the annular fixing block (20), of the end cover (23).

2. A pneumatic positioning device as set forth in claim 1, wherein: the top of the main body positioning column (10) is provided with a metal chassis (50), and the shape of the metal chassis (50) is a cuboid.

3. A pneumatic positioning device, as set forth in claim 2, wherein: a chassis positioning hole (51) is formed in the metal chassis (50), the outer diameter of the main body positioning column (10) is the same as the inner diameter of the chassis positioning hole (51), and the main body positioning column (10) is matched with the chassis positioning hole (51) for guiding and positioning.

4. A pneumatic positioning device as set forth in claim 1, wherein: the annular push block (21) is annular in shape, the annular push block (21) is made of steel, and the annular push block (21) is fixedly connected with the main body positioning column (10) through the connecting rod (12).

5. A pneumatic positioning device as set forth in claim 1, wherein: the annular push block (21) is fixedly connected with a screw plug of the connecting rod (12), and the main body positioning column (10) is fixedly connected with the connecting rod (12) through a bolt.

6. A pneumatic positioning device as set forth in claim 1, wherein: the appearance of end cover (23) is the cylinder, the material of end cover (23) is steel, end cover (23) and annular fixed block (20) end-face fit are fixed, the appearance of annular fixed block (20) is the annular, the material of annular fixed block (20) is steel.

7. A pneumatic positioning device as set forth in claim 1, wherein: the inner hexagonal plug screw (22) is fixed on the annular push block (21), an inner hexagonal bolt (24) is arranged at the bottom of the end cover (23), and the inner hexagonal bolt (24) is fixed on the lower fixing plate (13).