CN216608135U - Vacuum chuck clamp - Google Patents
Vacuum chuck clamp Download PDFInfo
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- CN216608135U CN216608135U CN202122640032.6U CN202122640032U CN216608135U CN 216608135 U CN216608135 U CN 216608135U CN 202122640032 U CN202122640032 U CN 202122640032U CN 216608135 U CN216608135 U CN 216608135U
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Abstract
The utility model provides a vacuum chuck clamp which comprises a clamp main body and vacuum logic valves, wherein the clamp main body is a cavity structure consisting of a workbench and a base, through holes are distributed on the workbench in an N-N grid manner, and the vacuum logic valves are distributed and installed at the through holes of the clamp main body; the base is provided with an interface for an external vacuum system. According to the utility model, the grid group is designed on the vacuum chuck clamp, and the vacuum logic valve is arranged in the grid group, so that the adsorption effect of the vacuum chuck on the workpiece is still maintained even if the workpiece is milled through in the process of adsorbing the part by the vacuum chuck clamp. The potential safety hazard that the parts are scrapped and fly out due to loss of the vacuum adsorption effect is avoided, and the safety and the reliability of workpiece clamping are improved.
Description
Technical Field
The utility model relates to the field of vacuum adsorption, in particular to a vacuum chuck clamp.
Background
In machining of thin plate parts, in order to prevent deformation of the parts during machining, chuck jigs are often used for clamping during actual machining. The current sucker clamp mainly comprises two forms, namely a magnetic sucker used for processing magnetically adsorbable materials such as iron. The other type is a vacuum chuck clamp, and a vacuum negative pressure is adopted to adsorb a workpiece so as to achieve the purpose of clamping the workpiece. The vacuum chuck clamp can adsorb parts made of various materials, including various metal and non-metal materials, so that the vacuum chuck clamp is widely applied to processing.
The vacuum chucks currently in use are of a grid-like structure, as shown in fig. 1.
When the vacuum chuck is used, the proper sealing strip is installed in the groove of the vacuum chuck according to the shape and size of a workpiece, and the vacuum port a is connected with the vacuum generating device, so that the vacuum chuck and the part form a vacuum cavity through the sealing strip, and the effect of adsorbing the part is achieved.
The vacuum chuck clamp has a simple structure and a good actual use effect, so that the vacuum chuck clamp is widely applied to actual production. However, it has the following significant disadvantages:
once the workpiece is milled and penetrated by misoperation generated in the machining process, a vacuum cavity formed by the vacuum sucker and the part through the sealing strip is immediately damaged, the vacuum cavity is communicated with the atmosphere, the vacuum adsorption effect is instantly lost, the machining scrap is caused, and the part flies out in serious conditions, so that great potential safety hazard is brought.
SUMMERY OF THE UTILITY MODEL
In order to produce the maloperation in the course of working and mill the work piece when wearing, still keep vacuum chuck to the adsorption of work piece, provide a vacuum chuck anchor clamps, avoid because lose vacuum adsorption, lead to processing to scrap and the potential safety hazard of part departure, promote the security and the reliability of work piece absorption centre gripping.
The technical scheme adopted by the utility model is as follows: a vacuum chuck clamp comprises a clamp main body and vacuum logic valves, wherein the clamp main body is a cavity structure consisting of a workbench and a base, through holes are distributed on the workbench in an N x N grid manner, and the vacuum logic valves are distributed and installed at the through holes of the clamp main body; the base is provided with an interface for an external vacuum system.
Furthermore, each through hole on the surface of the workbench is provided with a rectangular sealing strip which surrounds the through hole.
Furthermore, the workbench is connected with the base through screws.
Furthermore, the connection surface of the workbench and the base is sealed through a sealing ring.
Furthermore, each through hole on the surface of the workbench is provided with a filter screen and is fixed through a clamping ring.
Furthermore, the vacuum logic valve comprises a valve body shell, a valve core, a reset spring, a control flow path, a working flow path and a sucker interface, wherein the valve core is arranged in the valve body shell and can move up and down; the valve core is provided with a through hole from top to bottom, and the top of the valve body shell is provided with an opening; when the valve core is positioned at the top of the inner cavity of the valve body shell, the through hole of the valve core is communicated with the working flow path and provides an interface to the outside, and when the valve core is positioned at the bottom of the inner cavity of the valve body shell, the through hole of the valve core is disconnected with the working flow path; the control flow path is independent of the working flow path and the through hole of the valve core, is communicated to the lower part of the valve core and provides an interface to the outside; the sucker interface is fixedly connected with the top opening of the valve body shell, and the other end of the sucker interface is connected with the through hole in the clamp main body.
Furthermore, the valve core is in a bolt shape and comprises a head part and a rod part, and the outer diameter of the head part of the valve core is larger than the inner diameter of the top opening and smaller than the inner diameter of the cylindrical cavity.
Further, the valve body shell consists of a valve cover and a valve seat, a first groove is formed in the valve seat, and a second groove is formed in the center of the bottom of the first groove; the interior of the second groove is communicated with the working flow path; the rod part of the valve core is inserted into the second groove; the lower end of the valve cover is inserted into the first groove for fixed installation; the control flow path is communicated to the first groove; one end of the return spring is in contact with the lower part of the head of the valve core, and the other end of the return spring is in contact with the bottom of the first groove.
Further, a sealing ring is arranged on the outer ring of the head part of the valve core, and the rod part of the valve core is inserted into the second groove part and sleeved with the sealing ring; and a sealing gasket is arranged at the bottom of the second groove.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the grid group is designed on the vacuum chuck clamp, and the vacuum logic valve is arranged in the grid group, so that the adsorption effect of the vacuum chuck on the workpiece is still maintained even if the workpiece is milled through in the process of adsorbing the part by the vacuum chuck clamp. The potential safety hazard that the parts are scrapped and fly out due to loss of the vacuum adsorption effect is avoided, and the safety and the reliability of workpiece clamping are improved.
Drawings
FIG. 1 is a schematic diagram of a sucker with a grid structure in the prior art.
Fig. 2 is a schematic view of a vacuum chuck fixture according to the present invention.
Fig. 3 is a partial cross-sectional view of a vacuum chuck fixture in accordance with the present invention.
Fig. 4 is a cross-sectional view of a vacuum chuck fixture according to the present invention.
FIG. 5 is a schematic diagram of the vacuum logic proposed in the present invention.
Reference numerals: 1-workbench, 2-rectangular sealing strip, 3-clamping ring, 4-sealing ring, 5-vacuum logic valve, 6-filter screen, 7-base, 8-workpiece, 9-vacuum cavity, 10-external interface, 11-valve core, 12-valve cover, 13-valve seat, 14-reset spring, 15-sealing pad, 16-working flow path, 17-control flow path and 18-sucker interface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The vacuum chuck is divided into independent grid groups, each grid is controlled by an independent vacuum logic valve, each grid forms an independent vacuum cavity, and the vacuum logic valve controls the opening of a vacuum flow path according to whether each grid is communicated with the atmosphere or not. Therefore, once the vacuum cavity of the individual grid is damaged, the vacuum adsorption effect of other grids cannot be influenced, and meanwhile, the vacuum flow path of the grid is closed by the vacuum logic valve, so that the whole workpiece is prevented from losing adsorption force. The specific scheme is as follows:
as shown in fig. 2 and 4, the present embodiment provides a vacuum chuck fixture, which includes a fixture main body and vacuum logic valves 5, wherein the fixture main body is a cavity structure formed by a workbench 1 and a base 7, through holes are distributed on the workbench 1 in an N × N grid manner, and the vacuum logic valves 5 are distributed and installed at the through holes of the fixture main body; the base 7 is provided with an interface for an external vacuum system. The workpiece 8 is adsorbed through the through hole on the worktable.
Specifically, each through hole on the surface of the workbench 1 is provided with a rectangular sealing strip 2, and the rectangular sealing strips 2 surround the through holes and are used for forming an independent vacuum cavity on the surface of the workbench 1.
In a preferred embodiment, the working platform 1 and the base 7 are connected by screws.
In a preferred embodiment, the connecting contact surface of the worktable 1 and the base 7 is sealed by a sealing ring 4 to form a clamp vacuum cavity 9.
In a preferred embodiment, as shown in fig. 3, the table surface is provided with a filter screen 6 per through hole and is secured by a collar 3 for filtering impurities such as swarf.
It should be noted that, as shown in fig. 5, the vacuum logic valve 5 in this embodiment includes a valve body housing, a valve core 11, a return spring 14, a control flow path 17, a working flow path 16, and a suction cup interface 18, where the valve core 11 is installed in the valve body housing and can move up and down, the return spring 14 is installed below the valve core, and the valve core 11 is located at the top of an inner cavity of the valve body housing in a natural state; the valve core 11 is provided with a through hole from top to bottom, and the top of the valve body shell is provided with an opening; when the valve core 11 is positioned at the top of the inner cavity of the valve body shell, the through hole of the valve core 11 is communicated with the working flow path 16 and provides an interface to the outside, and when the valve core 11 is positioned at the bottom of the inner cavity of the valve body shell, the through hole of the valve core 11 is disconnected with the working flow path 16; the control flow path 17 is independent of the working flow path 16 and the through hole of the valve core, communicated to the lower part of the valve core 11 and provides an interface to the outside; the sucker interface 18 is fixedly connected with the top opening of the valve body shell, and the other end of the sucker interface 18 is connected with the through hole in the clamp body.
Specifically, the valve core 11 is in a bolt shape and comprises a head part and a rod part, and the outer diameter of the head part of the valve core is larger than the inner diameter of the top opening and smaller than the inner diameter of the cylindrical cavity.
In this embodiment, the valve body housing is composed of a valve cover 12 and a valve seat 13, a first groove is formed in the valve seat 13, and a second groove is formed in the center of the bottom of the first groove; the interior of the second groove communicates with the working fluid path 16; the rod part of the valve core is inserted into the second groove; the lower end of the valve cover is inserted into the first groove for fixed installation; the control flow path 17 communicates into the first groove; one end of the return spring is in contact with the lower part of the head of the valve core, and the other end of the return spring is in contact with the bottom of the first groove. A sealing ring 4 is arranged on the outer ring of the head part of the valve core 11, and the sealing ring 4 is sleeved on the part of the valve core rod inserted into the second groove; and a sealing gasket 15 is arranged at the bottom of the second groove.
Specifically, the vacuum chuck fixture process provided by the utility model specifically comprises the following steps:
when a workpiece is adsorbed on a certain grid of the independent grid group, the workpiece, the sucker and the working flow path of the logic valve form a closed cavity, the pressures of the working flow path and the control flow path are both system vacuum pressures, and the valve core is in the state shown in the figure under the action of the spring force. The working flow path keeps vacuum pressure and vacuum flow, and adsorption of the workpiece is achieved.
When a certain grid of the independent grid group is milled through due to processing errors, the working flow path of the logic valve cannot form a closed cavity because the working flow path is communicated with the atmosphere,the pressure is atmospheric pressure P0Controlling the pressure of the flow path to be the system vacuum pressure PVDue to P0>PVSo that the upper and lower surfaces of the spool are subjected to gas pressure FOn the upper part>FLower partThe valve core overcomes the spring reset force under the action of the pressure of the control flow path, so that the valve core moves downwards to close the working flow path.
When the vacuum clamp is used for machining, a workpiece is placed on the vacuum clamp workbench according to a required position, after the workpiece is installed, the grid which is not completely covered is communicated with the atmosphere, the vacuum logic valve is closed, and no adsorption effect exists. The completely covered grid forms a vacuum cavity, the vacuum logic valve is opened, and the grid is communicated with the vacuum cavity and adsorbs parts through vacuum.
In the processing process, once a certain grid is milled through, the grid is communicated with the atmosphere, the vacuum logic valve immediately closes the passage between the grid and the vacuum system, and other grids still keep an adsorption state normally, so that sufficient adsorption force is ensured, the processing process is normally carried out, the conditions that the vacuum degree of the vacuum system is reduced instantly, a workpiece loses the adsorption force and flies out are avoided, and the safety and the reliability of the processing process are ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A vacuum chuck clamp is characterized by comprising a clamp main body and vacuum logic valves, wherein the clamp main body is a cavity structure consisting of a workbench and a base, through holes are distributed on the workbench in an N-N grid manner, and the vacuum logic valves are distributed and installed at the through holes of the clamp main body; the base is provided with an interface for an external vacuum system; the vacuum logic valve comprises a valve body shell, a valve core, a reset spring, a control flow path, a working flow path and a sucker interface, wherein the valve core is arranged in the valve body shell and can move up and down; the valve core is provided with a through hole from top to bottom, and the top of the valve body shell is provided with an opening; when the valve core is positioned at the top of the inner cavity of the valve body shell, the through hole of the valve core is communicated with the working flow path and provides an interface to the outside, and when the valve core is positioned at the bottom of the inner cavity of the valve body shell, the through hole of the valve core is disconnected with the working flow path; the control flow path is independent of the working flow path and the through hole of the valve core, is communicated to the lower part of the valve core and provides an interface to the outside; the sucker interface is fixedly connected with the top opening of the valve body shell.
2. The vacuum chuck holder of claim 1, wherein a rectangular sealing strip is disposed at each through hole on the surface of the table, and the rectangular sealing strip surrounds the through hole.
3. The vacuum chuck clamp of claim 1 or 2, wherein the table is screwed to the base.
4. The vacuum chuck holder according to claim 3, wherein the connection surface of the table and the base is sealed by a sealing ring.
5. The vacuum chuck holder of claim 1, wherein each through hole on the surface of the table is provided with a filter mesh and is fixed by a collar.
6. The vacuum chuck clamp of claim 1, wherein the valve core is shaped like a bolt and comprises a head part and a rod part, and the outer diameter of the head part of the valve core is larger than the inner diameter of the top opening and smaller than the inner diameter of the cylindrical cavity.
7. The vacuum chuck clamp according to claim 6, wherein the valve body housing is composed of a valve cover and a valve seat, the valve seat is internally provided with a first groove, and the center of the bottom of the first groove is provided with a second groove; the interior of the second groove is communicated with the working flow path; the rod part of the valve core is inserted into the second groove; the lower end of the valve cover is inserted into the first groove for fixed installation; the control flow path is communicated to the first groove; one end of the return spring is in contact with the lower part of the head of the valve core, and the other end of the return spring is in contact with the bottom of the first groove.
8. The vacuum chuck holder as claimed in claim 6 or 7, wherein the valve core head has a sealing ring on its outer circumference, and the valve core rod is inserted into the second groove and sleeved with the sealing ring; and a sealing gasket is arranged at the bottom of the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640032.6U CN216608135U (en) | 2021-10-29 | 2021-10-29 | Vacuum chuck clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640032.6U CN216608135U (en) | 2021-10-29 | 2021-10-29 | Vacuum chuck clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216608135U true CN216608135U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122640032.6U Active CN216608135U (en) | 2021-10-29 | 2021-10-29 | Vacuum chuck clamp |
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| CN (1) | CN216608135U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116000354A (en) * | 2023-02-27 | 2023-04-25 | 江苏永铭汇门窗科技有限公司 | Milling machine structure for processing aluminum profile doors and windows |
| KR200497336Y1 (en) * | 2023-02-22 | 2023-10-11 | 김상봉 | Vacuum valve and vacuum chuck equipped with vacuum valve |
-
2021
- 2021-10-29 CN CN202122640032.6U patent/CN216608135U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200497336Y1 (en) * | 2023-02-22 | 2023-10-11 | 김상봉 | Vacuum valve and vacuum chuck equipped with vacuum valve |
| CN116000354A (en) * | 2023-02-27 | 2023-04-25 | 江苏永铭汇门窗科技有限公司 | Milling machine structure for processing aluminum profile doors and windows |
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