CN218904473U

CN218904473U - Multi-point type sealing strip-free vacuum chuck

Info

Publication number: CN218904473U
Application number: CN202223271491.2U
Authority: CN
Inventors: 周凤麟
Original assignee: Wenzhou Pinshang Automation Co ltd
Current assignee: Wenzhou Pinshang Automation Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-25
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to the technical field of workpiece clamping, in particular to a multipoint type sealing strip-free vacuum chuck. The technical proposal comprises: including sucking disc main part and absorption hole, sucking disc main part is square structure and upper surface evenly offered the absorption hole, and a pair of positive crimping trachea and a pair of negative pressure air pipe are installed to sucking disc main part front side wall, and the negative pressure table is installed to sucking disc main part front side intermediate position, all installs the ball valve in positive crimping trachea and the negative pressure trachea, is provided with negative pressure mechanism in the absorption hole. The utility model utilizes air pressure to carry out adsorption fixation, and can realize arbitrary azimuth adsorption without any external product assistance, thereby not only being convenient to operate, but also being capable of well protecting the workpiece, and only being capable of carrying out the work of covering the adsorption hole of the workpiece in the adsorption process, thereby avoiding the situation that cutting waste residues enter the sucker.

Description

Multi-point type sealing strip-free vacuum chuck

Technical Field

The utility model relates to the technical field of workpiece clamping, in particular to a multipoint type sealing strip-free vacuum chuck.

Background

In the process of clamping workpieces by machine tool equipment such as CNC, surface grinding machine, milling machine and the like, common methods comprise clamping of flat tongs, glue fixing and vacuum chuck fixing, as the vacuum chuck mainly adsorbs the workpieces, the limited number of the workpieces clamped by the tongs once can be avoided, the workpieces are easy to clamp and deform when thinner, the workpieces are easy to incline during clamping, the parallelism cannot be guaranteed, the problem that the workpieces can be machined only by waiting for complete adhesion of the glue during glue clamping is avoided, the workpieces are easy to scratch during glue removal, and the vacuum chuck is widely applied.

However, in the existing vacuum chuck fixing process, the following technical problems exist:

1. the traditional vacuum sucker is provided with a hand-pulled valve, when the air pipe of the hand-pulled valve is opened, a plurality of air holes are formed in the surface to leak outwards, and cutting waste residues can enter the sucker, so that the adsorption holes can not be completely adsorbed to leak air;

2. the external pressure plate groove of the traditional vacuum chuck cannot be spliced and used, and a machined workpiece is required to be smaller than the vacuum chuck;

3. the traditional vacuum chuck needs to be provided with a sealing strip smaller than the workpiece size of a processed product, and is time-consuming and labor-consuming.

Disclosure of Invention

The utility model aims at solving the problems in the background technology and provides a multi-point type sealing strip-free vacuum chuck which is convenient for fixing a workpiece.

The technical scheme of the utility model is as follows: the utility model provides a multipoint type does not have sealing strip vacuum chuck, includes sucking disc main part and absorption hole, the sucking disc main part is square structure and upper surface evenly has seted up the absorption hole, a pair of malleation air pipe and a pair of negative pressure air pipe that connect that can external vacuum source are installed to sucking disc main part front side wall, the negative pressure table is installed to sucking disc main part front side intermediate position, all install the ball valve in positive crimping trachea and the negative crimping trachea, be provided with negative pressure mechanism in the absorption hole.

Preferably, the negative pressure mechanism comprises an air valve and a mounting spring, the air valve is movably connected in the adsorption hole, the mounting spring is arranged between the middle position of the bottom of the air valve and the side wall of the bottom of the adsorption hole, and the air valve is always in an opened state under the action of no external force by using the jack-up of the mounting spring.

Preferably, the periphery of the bottom of the adsorption hole is provided with a sealing ring, so that the inside of the adsorption cavity is in a relatively sealed environment in the adsorption process.

Preferably, the jump ring is installed to the absorption hole upper end, absorption downthehole and be located between jump ring and the pneumatic valve and install the filter screen, the jump ring can fix a position the various subassembly in the absorption hole, and the filter screen can avoid the residue to enter into in the absorption hole simultaneously.

Preferably, the sucking disc main part includes sucking disc upper strata and sucking disc bottom plate, the sucking disc upper strata is all offered to the absorption hole, sucking disc upper strata upper surface mounting has the cushion, utilizes removable polymer cushion, has solved operating personnel and has cut the problem that leads to sucking disc main part damage excessively to the mistake.

Preferably, the clamp plate groove has all been seted up to sucking disc main part both sides, adopts built-in clamp plate groove, can a plurality of sucking discs splice and use, has solved because of the too big problem that the sucking disc is too little and can not use of work piece.

Compared with the prior art, the utility model has the following beneficial technical effects: the air pressure is utilized to adsorb and fix, and meanwhile, any external product is not needed to assist to realize arbitrary azimuth adsorption, so that the operation is convenient, the workpiece can be well protected, and in the adsorption process, only the work of covering the adsorption hole of the workpiece can be performed, and the situation that cutting waste residues enter the sucker is avoided.

Drawings

FIG. 1 is a schematic view of the overall appearance structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic view showing the internal cross-sectional structure of the adsorption hole of the present utility model;

fig. 4 is a schematic diagram of an assembly structure of the negative pressure mechanism of the present utility model.

Reference numerals: 1. a suction cup main body; 11. a sucker upper layer; 12. a sucker bottom plate; 13. rubber cushion; 14. a platen groove; 2. adsorption holes; 21. an air valve; 22. a filter screen; 23. clamping springs; 24. installing a spring; 25. a seal ring; 3. a negative pressure meter; 4. positive pressure air pipe; 5. a negative pressure air pipe; 6. ball valve.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

As shown in fig. 1-4, the multipoint type sealing strip-free vacuum chuck provided by the utility model comprises a chuck main body 1 and a suction hole 2, wherein the chuck main body 1 is of a square structure, the suction hole 2 is uniformly formed in the upper surface, a pair of positive pressure air receiving pipes 4 and a pair of negative pressure air receiving pipes 5 are arranged on the front side wall of the chuck main body 1, a negative pressure meter 3 is arranged at the middle position of the front side of the chuck main body 1, ball valves 6 are arranged in the positive pressure air receiving pipes 4 and the negative pressure air receiving pipes 5, a negative pressure mechanism is arranged in the suction hole 2, the chuck main body 1 comprises a chuck upper layer 11 and a chuck bottom plate 12, the suction hole 2 is formed in the chuck upper layer 11, a rubber pad 13 is arranged on the upper surface of the chuck upper layer 11, pressure plate grooves 14 are formed in two sides of the chuck main body 1, the pressure plates are inserted in the pressure plate grooves 14, the chuck main body 1 can be fixed on a workbench, or the pressure plates are inserted in the pressure plate grooves 14 between the adjacent chuck main bodies 1, and the chuck main bodies 1 can be spliced.

The negative pressure mechanism comprises an air valve 21 and an installing spring 24, the air valve 21 is movably connected in the adsorption hole 2, the installing spring 24 is arranged between the middle position of the bottom of the air valve 21 and the side wall of the bottom of the adsorption hole 2, a sealing ring 25 is arranged on the periphery of the bottom of the adsorption hole 2, a clamping spring 23 is arranged at the upper end of the adsorption hole 2, a filter screen 22 is arranged between the clamping spring 23 and the air valve 21, each air valve 21 is jacked by the installing spring 24, the air valve 21 is in a normally open state due to the pressure of the installing spring 24, when a vacuum source is started, when a sucking disc starts to work, the air valve 21 without being covered by a workpiece is closed due to the fact that the external atmospheric pressure is higher than the pressure of the installing spring 24, the air valve 21 covered by the workpiece is formed after the air valve is contacted with the workpiece, when the sucking disc main body 1 starts to work, the vacuum source can suck air in the sealing space, and the air pressure inside the adsorption hole 2 is lower than the air pressure of the outside, so that the purpose of fixing the workpiece is achieved.

In this embodiment, the chuck body 1 is fixed on the machine tool table by using the pressing plate, and the chuck body 1 and the machine tool table are ensured to keep in a horizontal state, then the positive pressure air pipe 4 and the negative pressure air pipe 5 are utilized to connect to a vacuum source, the ball valve 6 is set to be in a closed state, then the vacuum air pressure is checked by the negative pressure meter 3, the chuck body 1 is ensured to keep at a specified vacuum pressure value during operation, the vacuum pressure value is kept continuously stable during the use process, then the workpiece to be processed is placed on the chuck table, the workpiece is lightly pressed by hand, the ball valve 6 is opened, finally whether the workpiece is firmly sucked is confirmed, in the process, each air valve 21 is jacked up by the installation spring 24, because the air valve 21 is in a normally open state by the pressure of the installation spring 24, when the vacuum source is started, the chuck starts to work, the air valve 21 covered by the workpiece is closed because the external atmospheric pressure is higher than the pressure of the installation spring 24, and the air valve 21 covered by the workpiece is formed after the vacuum source is contacted with the workpiece, the workpiece can be sucked by the vacuum source when the chuck body 1 starts to work, the vacuum source is placed on the chuck table, the whole operation is realized, the whole operation is easy, and the operation can be realized by the chuck body is easy, and the whole operation can be realized.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. Multipoint type does not have sealing strip vacuum chuck, including sucking disc main part (1) and absorption hole (2), its characterized in that: sucking disc main part (1) is square structure and upper surface evenly offered and has adsorbed hole (2), sucking disc main part (1) front side wall installs a pair of malleation and connects gas pipe (4) and a pair of negative pressure and connect gas pipe (5), sucking disc main part (1) front side intermediate position installs negative pressure table (3), all install ball valve (6) in malleation trachea (4) and negative pressure connect gas pipe (5), be provided with negative pressure mechanism in adsorption hole (2).

2. The multipoint sealing strip-free vacuum chuck according to claim 1, wherein the negative pressure mechanism comprises an air valve (21) and a mounting spring (24), the air valve (21) is movably connected in the adsorption hole (2), and the mounting spring (24) is mounted between the middle position of the bottom of the air valve (21) and the side wall of the bottom of the adsorption hole (2).

3. The multipoint sealless vacuum chuck according to claim 2, wherein a sealing ring (25) is provided at the periphery of the bottom of the suction hole (2).

4. The multipoint type sealing strip-free vacuum chuck according to claim 2, wherein a clamp spring (23) is installed at the upper end of the adsorption hole (2), and a filter screen (22) is installed in the adsorption hole (2) and located between the clamp spring (23) and the air valve (21).

5. The multipoint type sealing strip-free vacuum chuck according to claim 1, wherein the chuck main body (1) comprises a chuck upper layer (11) and a chuck bottom plate (12), the adsorption holes (2) are formed in the chuck upper layer (11), and rubber pads (13) are mounted on the upper surface of the chuck upper layer (11).

6. The multipoint type sealing strip-free vacuum chuck according to claim 1, wherein the chuck main body (1) is provided with a pressing plate groove (14) on both sides.