CN114789413A

CN114789413A - Independent negative pressure holding fixture

Info

Publication number: CN114789413A
Application number: CN202210525910.6A
Authority: CN
Inventors: 张恩山; 朱芳程; 张扬
Original assignee: Shenzhen Zhixin Precision Instrument Co ltd
Current assignee: Shenzhen Zhixin Precision Instrument Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-07-26

Abstract

The invention relates to the technical field of clamps and discloses an independent negative pressure maintaining clamp which comprises a flat plate, wherein a vacuum sucker is fixedly arranged on the flat plate, and an inner vacuum bin is fixedly arranged at the bottom of the flat plate; one side of the inner vacuum bin is fixedly provided with a sealing plate I and a sealing plate II; and a two-stage vacuum booster pump is arranged in the inner vacuum bin. The invention provides an independent negative pressure maintaining clamp, which does not need mechanical positioning and reduces the damage risk of a product; the compatible range of the clamp is improved; the gas circuit layout on the mechanism is optimized, the circuit is prevented from directly participating in the mechanism movement, the service life of the circuit is prolonged, and the after-sale cost is reduced.

Description

Independent negative pressure holding fixture

Technical Field

The invention relates to the field of clamps, in particular to an independent negative pressure maintaining clamp.

Background

At present automation line, the automatic backward flow design of anchor clamps in the line body has been very general, because anchor clamps carry out reciprocating motion on the production line, consequently the direct trachea that the anchor clamps can not be simple goes to realize anchor clamps and to product vacuum adsorption effect. Meanwhile, the industry pays more and more attention to the protection of products in the production process, and the problem of preventing the products from being damaged in the production process is always the key concern of the automation industry, so that a clamp capable of keeping vacuum adsorption on a backflow line needs to be designed, the mechanical positioning is reduced, and the product damage risk is reduced.

In order to solve the above problems, an independent negative pressure holding jig is proposed in the present application.

Disclosure of Invention

Objects of the invention

In order to solve the technical problems in the background art, the invention provides an independent negative pressure holding clamp, which does not need mechanical positioning and reduces the damage risk of products; the compatible range of the clamp is improved; the gas circuit layout on the mechanism is optimized, the circuit is prevented from directly participating in the mechanism movement, the service life of the circuit is prolonged, and the after-sale cost is reduced.

(II) technical scheme

In order to solve the problems, the invention provides an independent negative pressure maintaining clamp which comprises a flat plate, wherein a vacuum chuck is fixedly arranged on the flat plate, and an inner vacuum bin is fixedly arranged at the bottom of the flat plate;

one side of the inner vacuum bin is fixedly provided with a sealing plate I and a sealing plate II;

and a two-stage vacuum booster pump is arranged in the inner vacuum bin.

Preferably, the two-stage vacuum booster pump comprises two valve bodies, two booster springs, two airtight covers and two sealing valve cores.

Preferably, a return spring is arranged inside the valve body.

Preferably, the plate is a silica gel plate.

Preferably, the number of the vacuum suction cups is multiple.

Preferably, the two-stage vacuum booster pump is connected with the second sealing plate.

The technical scheme of the invention has the following beneficial technical effects:

1. the design of the airtight vacuum booster valve can realize the connection without an air pipe on a return line through the inner vacuum bin and the two-stage vacuum booster valve, so that the product can be adsorbed and conveyed; mechanical positioning is not needed, the product damage risk is reduced, and the customer requirements are met.

2. The clamp compatibility range is improved, and the clamp is adsorbed by the planar vacuum chuck without limiting the appearance of a product, so that the product can be conveyed in a compatible manner in various sizes, and the product production can be quickly switched without replacing the clamp.

3. Compatible multiple mounting means, the modularized design can realize multiple mounting means, like horizontal installation, vertical installation, wall installation and hang upside-down installation etc. the technique of being convenient for is expanded, improves design efficiency, shortens design cycle.

4. The gas circuit layout on the mechanism is optimized, the circuit is prevented from directly participating in the mechanism movement, the service life of the circuit is prolonged, and the after-sale cost is reduced.

Drawings

Fig. 1 is a schematic structural view of an independent negative pressure holding fixture according to the present invention.

Fig. 2 is another view structure diagram of an independent negative pressure holding fixture according to the present invention.

Fig. 3 is a partial structural schematic view of an independent negative pressure holding fixture according to the present invention.

Fig. 4 is a partial sectional structural schematic view of an independent negative pressure holding fixture according to the present invention.

Fig. 5 is a schematic view of a partial schematic structure of an independent negative pressure holding fixture according to the present invention.

Reference numerals: 1. a second sealing plate; 2. a vacuum chuck; 3. a flat plate; 4. a first sealing plate; 5. a two-stage vacuum booster pump; 51. a valve body; 52. a pressurizing spring; 53. an airtight cover; 54. sealing the valve core; 6. an inner vacuum bin; 7. a return spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings in combination with the embodiments. It is to be understood that these descriptions are only illustrative and are not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-5, the independent negative pressure maintaining clamp provided by the invention comprises a flat plate 3, wherein a vacuum chuck 2 is fixedly arranged on the flat plate 3, and an inner vacuum chamber 6 is fixedly arranged at the bottom of the flat plate 3;

one side of the inner vacuum bin 6 is fixedly provided with a sealing plate I4 and a sealing plate II 1;

the interior of the inner vacuum bin 6 is provided with a two-stage vacuum booster pump 5.

In an alternative embodiment, the two-stage vacuum booster pump 5 includes two valve bodies 51, two booster springs 52, two airtight covers 53, and two sealing valve cores 54, the two compression springs 52 are respectively connected with the two valve bodies 51, the sealing valve cores 54 are located in the middle of the airtight covers 53, and the airtight covers 53 are disposed on the vacuum booster pump 5.

In an alternative embodiment, the valve body 51 is internally provided with a return spring 7.

In an optional embodiment, the flat plate 3 is a silica gel flat plate, so that the cushioning comfort of the product during placement is improved.

In an alternative embodiment, the number of the vacuum suction cups 2 is multiple, and the suction effect on the product is increased by providing multiple vacuum suction cups 2.

In an alternative embodiment, a two-stage vacuum booster pump 5 is connected to the closure plate two 1.

According to the invention, the position of the airtight cover 53 is communicated with the vacuum connector, along with air supply, the vacuum connector pushes the first sealing valve core 54, the sealing valve core 54 is compressed, the vacuum air passage is communicated, the first valve body 51 is compressed in place, the second sealing valve core 54 is pushed to be compressed, after the second sealing valve core 54 is compressed in place, the second valve body 51 is compressed in place, the vacuum air passage is communicated to the inner vacuum bin 6, a product is placed on the flat plate 3, and an external vacuum source is utilized to establish vacuum and adsorb; the vacuum connector resets, the valve cores in the two valve bodies 51 reset to complete airtightness, the valve bodies 51 reset gradually in the jig transferring process, and the vacuum degree of the vacuum bin 6 in the jig is compensated by the action of resetting of the reset spring 7, so that the vacuum maintaining time of the jig is effectively prolonged, and long-time product positioning and transmission are realized.

And (5) finishing transmission, releasing the negative pressure inside the jig through the vacuum connector, and then discharging.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. An independent negative pressure holding jig comprising a flat plate (3), characterized in that: the flat plate (3) is fixedly provided with a vacuum sucker (2), and the bottom of the flat plate (3) is fixedly provided with an inner vacuum bin (6);

one side of the inner vacuum bin (6) is fixedly provided with a sealing plate I (4) and a sealing plate II (1);

and a two-stage vacuum booster pump (5) is arranged in the inner vacuum bin (6).

2. The independent negative pressure holding fixture according to claim 1, wherein the two-stage vacuum booster pump (5) includes two valve bodies (51), two booster springs (52), two airtight covers (53), and two airtight spools (54).

3. An independent negative pressure holding jig according to claim 1, characterized in that the valve body (51) is provided inside with a return spring (7).

4. An independent negative pressure holding jig according to claim 1, characterized in that the flat plate (3) is a silicone flat plate.

5. An independent negative pressure holding jig according to claim 1, characterized in that the number of the vacuum suction cups (2) is plural.

6. An independent negative pressure holding jig according to claim 1, characterized in that the two-stage vacuum booster pump (5) is connected to the second sealing plate (1).