Novel vacuum chuck pneumatic clamp

Abstract

The utility model provides a novel vacuum chuck pneumatic clamp, which relates to the technical field of machining clamps and comprises a body, the body is provided with a chuck table top, and a plurality of adsorption holes are distributed on the chuck table top and used for adsorbing workpieces. A plurality of mounting holes connected with the adsorption holes are formed in the body, one ends of the mounting holes are connected with the adsorption holes, and the other ends of the mounting holes are used for being connected with an air source; the valve element sealing assembly is installed in the installation hole, an inclined section is arranged on the installation hole, a sealing ring is arranged on a T-shaped core body of the valve element sealing assembly, a spring is arranged between the T-shaped core body and the installation hole, the spring enables the T-shaped core body to be close to the adsorption hole, and meanwhile under the effect of negative pressure, the valve element sealing assembly is installed on the valve element sealing assembly. The sealing ring on the T-shaped valve element can be driven by air pressure to abut against the inclined section to close the channel, meanwhile, due to the arrangement of the inclined section, adsorbed residues can be sucked away along the inclined section, the residues remaining on the inclined section are reduced, the residues are prevented from making contact with the sealing ring, and the service life of the sealing ring is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing clamping fixture technical field, especially a new type vacuum chuck pneumatic clamp. BACKGROUND

[0002] Traditional mechanical processing industry is fixed in workpiece clamping positioning, generally adopts AB glue, double -sided adhesive tape, 502 glue, pressing plate, vice, sealing strip vacuum chuck etc.

[0003] In the prior art, the position of the suction hole of the vacuum chuck is generally processed into a suction hole, and a sealing ring is installed in the suction hole. The valve core sealing assembly in the suction hole moves downward under the action of air pressure and abuts against the sealing ring, thereby preventing the flow of air in some suction holes. However, due to the sealing ring installed in the suction hole, some residues are retained, which causes the sealing to be not tight, resulting in air leakage in the suction hole, unstable suction force, and thus affecting the suction effect and service life of the vacuum chuck. SUMMARY

[0004] The utility model discloses a kind of new vacuum chuck pneumatic clamps, to solve the technical problem that the suction hole sealing is not tight in the prior art, resulting in air leakage in the suction hole, unstable suction force, and thus affecting the suction effect and service life of the vacuum chuck. The preferred technical solutions in many technical solutions provided by the utility model can produce many technical effects, which are described in detail below.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The utility model provides a kind of new vacuum chuck pneumatic clamps, comprising:

[0007] The body has a suction disc table, and the suction disc table is provided with a plurality of suction holes for suctioning workpieces. The body is provided with a plurality of mounting holes connected with the suction holes. One end of the mounting hole is connected with the suction hole, and the other end is connected with the gas source.

[0008] A valve core sealing assembly is installed in the mounting hole, the mounting hole is provided with an inclined section, the T-shaped core of the valve core sealing assembly is provided with a first sealing ring, and the first sealing ring can abut against the inclined section, a spring is arranged between the second end of the T-shaped core and the mounting hole, and the spring makes the T-shaped core close to the adsorption hole.

[0009] Preferably, the valve core sealing assembly further comprises a stainless steel filter screen, a C-shaped clamp spring and a gasket arranged in sequence, the stainless steel filter screen is installed above the mounting hole, the gasket is clamped on the sidewall of the mounting hole, and the C-shaped clamp spring is arranged between the stainless steel filter screen and the gasket, and the first end of the T-shaped core is in contact with the gasket.

[0010] Preferably, the mounting hole comprises a first connecting section, a second connecting section, a clearance, a third connecting section and a fourth connecting section arranged in sequence and decreasing in diameter in sequence, the inclined section is arranged between the third connecting section and the fourth connecting section, the spring is installed in the fourth connecting section, the T-shaped core is installed in the third connecting section, the first diameter of the T-shaped core is greater than the diameter of the fourth connecting section and less than the diameter of the third connecting section, and the second diameter of the T-shaped core is less than the diameter of the fourth connecting section.

[0011] Preferably, the T-shaped core comprises a horizontal section and a vertical section, an inner R groove is arranged on the sidewall close to one end of the vertical section, and the first sealing ring is installed in the inner R groove.

[0012] Preferably, the upper surface of the body is provided with a detachable rubber protective pad, and the rubber protective pad is provided with a through hole corresponding to the adsorption hole.

[0013] Preferably, the body is provided with a positive air pressure valve and a negative air pressure valve, and the positive air pressure valve and the negative air pressure valve are both in communication with the adsorption disc.

[0014] Preferably, at least one set of vacuum areas is arranged on the body in the length or width direction, one set of vacuum areas is arranged on the body, the positive air pressure valve and the negative air pressure valve are arranged as a set, more than two sets of vacuum areas are arranged on the body, the number of sets of the positive air pressure valve and the negative air pressure valve is the same as the number of sets of the vacuum areas, and the number of sets of the positive air pressure valve and the negative air pressure valve corresponds to the number of sets of the vacuum areas, and a region sealing ring is arranged around each single vacuum area to ensure the sealing property of each vacuum area, and a first U-shaped groove is designed on the body for installing the region sealing ring.

[0015] Preferably, a base is detachably mounted on the bottom surface of the body by bolts, and the side surface of the base forms a step with the side surface of the body so as to fix the base.

[0016] Preferably, a first tooth hole is arranged on the step.

[0017] Preferably, the body comprises a main body and a cover plate, the cover plate is detachably mounted on the main body by first screws, a sealing ring set is arranged between the main body and the cover plate, the mounting hole is arranged on the main body, the end surface of the main body in contact with the cover plate is provided with protrusions arranged in the transverse and longitudinal directions, the top surface of the protrusions abuts against the cover plate, and a certain distance exists between two adjacent protrusions to form a transverse air passage and a longitudinal air passage, and the position where the transverse air passage intersects with the longitudinal air passage communicates with the mounting hole.

[0018] The technical scheme provided in the application file has the following beneficial effects:

[0019] The utility model provides a novel vacuum chuck pneumatic clamp, comprising:

[0020] The body has a chuck table surface, and a plurality of adsorption holes are arranged on the chuck table surface for adsorbing workpieces; a plurality of mounting holes connected with the adsorption holes are arranged in the body, one end of the mounting hole is connected with the adsorption hole, and the other end is used for being connected with a gas source;

[0021] The valve core sealing assembly is installed in the mounting hole, an inclined section is arranged on the mounting hole, a sealing ring is arranged on the T-shaped core body of the valve core sealing assembly, a spring is arranged between the T-shaped core body and the mounting hole, the spring makes the T-shaped core body close to the adsorption hole, a certain gap exists between the side wall of the T-shaped core body and the side wall of the mounting hole to allow gas to pass through, under the action of negative pressure, the sealing ring on the T-shaped valve core can abut against the inclined section under the drive of gas pressure to close the passage, and due to the arrangement of the inclined section, the adsorbed residues can be sucked away along the inclined section, the residues are reduced to stay on the inclined section, the residues are prevented from contacting the sealing ring, the service life of the sealing ring is prolonged, the adsorption capacity of the vacuum chuck is ensured, the residues are reduced to stay on the inclined section, the sealing ring is prevented from abutting against the residues during sealing, the service life of the sealing ring is prolonged, and the adsorption effect of the chuck is more stable, and the service life of the chuck is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a schematic diagram of an appearance structure according to an example embodiment;

[0024] Figure 2 is Figure 1 is a partial enlarged view of A in the figure;

[0025] Figure 3 is a schematic diagram of the mounting structure of the mounting hole and the valve core sealing assembly on the body according to an example embodiment;

[0026] Figure 4 is a schematic diagram of the structure of the mounting hole according to an example embodiment;

[0027] Figure 5 is a schematic diagram of the structure of the dismounting base and part of the cover plate according to an example embodiment.

[0028] In the figure: 1, body; 11, adsorption hole; 12, mounting hole; 121, first connecting section; 122, second connecting section; 123, avoidance section; 124, third connecting section; 125, fourth connecting section; 126, inclined section; 13, main body; 131, protrusion; 14, cover plate; 15, area sealing ring; 16, annular sealing ring; 17, positioning pin hole; 2, valve core sealing assembly; 21, stainless steel filter screen; 22, C-shaped clasp spring; 23, gasket; 24, T-shaped core body; 241, horizontal section; 242, vertical section; 3, first sealing ring; 5, negative air pressure valve; 6, positive air pressure valve; 7, spring; 8, rubber protective pad; 9, base; 91, first tooth hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0030] This specific embodiment provides a new type of vacuum suction cup pneumatic clamp to solve the technical problems in the prior art such as poor sealing of the suction holes causing air leakage in the suction holes and unstable suction force, thereby affecting the adsorption effect and service life of the vacuum suction cup.

[0031] The following embodiments are described with reference to the accompanying drawings. The embodiments described below do not limit the scope of the utility model as set forth in the claims. Furthermore, the entire contents of the configurations shown in the following embodiments are not necessarily required to serve as solutions to the utility model as set forth in the claims.

[0032] Reference Figures 1-5 The utility model provides a new type of vacuum suction cup pneumatic clamp, including:

[0033] The main body 1 has a suction cup table with multiple adsorption holes 11 on the suction cup table for adsorbing workpieces; a plurality of mounting holes 12 connected to the adsorption holes 11 are provided in the main body 1, wherein one end of the mounting hole 12 is connected to the adsorption hole 11, and the other end is used to connect to the air source;

[0034] The valve core sealing component 2 is installed in the mounting hole 12, and the mounting hole 12 is provided with an inclined section 126. The T-shaped core 24 of the valve core sealing component 2 is provided with a first sealing ring 3. A spring 7 is provided between the T-shaped core 24 and the mounting hole 12. The spring 7 makes the T-shaped core 24 close to the adsorption hole 11, wherein there is a certain gap between the side wall of the T-shaped core 24 and the side wall of the mounting hole 12 for gas to pass through. At the same time, under the action of negative pressure, the first sealing ring 3 on the T-shaped valve core can be driven by the air pressure and the inclined section 1 26 offset to close the channel. At the same time, due to the setting of the inclined section 126, the adsorbed residue can be sucked away along the inclined section 126, reducing the residue staying in the inclined section 126 to avoid the residue from contacting the first sealing ring 3, extending the service life of the first sealing ring 3, and ensuring the adsorption capacity of the vacuum suction cup. In this way, in a position where no workpiece is placed, the valve core sealing assembly can move in the direction away from the adsorption hole under the pressure of air pressure, so that the first sealing ring 3 set on the valve core sealing assembly offsets the inclined section 126, and the channel is instantly closed.

[0035] Specifically, when the workpiece is placed on the body 1, the T-shaped core 24 is in the first state, i.e., the T-shaped core 24 is close to the suction hole 11, so that the channel between the gas source and the suction hole 11 is closed. The negative pressure gas source is turned on, the T-shaped core 24 is driven downward by the gas pressure, and the spring 7 is compressed to allow the passage of gas. At this time, the valve core sealing assembly is in the second state, the bottom end of the workpiece forms a negative pressure, and the workpiece is adsorbed on the body 1. When the adsorbed workpiece is processed by the processing tool and is punched, the T-shaped core 24 in the installation hole 12 will be closed instantaneously, so as not to affect the overall adsorption effect. At the same time, as long as there is a certain adsorption plane for the workpiece with a through hole or a through groove, the workpiece can also be adsorbed instantaneously. After the workpiece is finished processing, the negative switch is turned off and the positive switch is turned on. The positive gas source fills the gas inward, and under the action of the gas pressure and the spring 7, the T-shaped core 24 moves to the position close to the suction hole 11, thereby closing the channel and achieving the purpose of loosening the workpiece. Or the positive pressure gas source pipe is removed, and the inside of the suction cup is also discharged by the positive pressure valve switch to achieve the purpose of loosening the workpiece. When there is no workpiece placed on the body 1, when the gas source is started, the T-shaped core 24 is driven downward by the gas pressure, and at this time the gas passage is opened. At the same time, under the action of the gas pressure, the valve core sealing assembly 2 continues to move downward, so that the first sealing ring 3 on the valve core sealing assembly 2 is sealed with the installation hole 12. In this way, the external gas pressure is stopped from being continuously delivered to the gas source, and the suction hole without placing the workpiece is closed. That is, when the suction hole 11 is opened, the suction hole 11 gas source experiences a process of closing-opening-closing. When the positive pressure is filled or the negative pressure is closed, the same process of closing-opening-closing is also experienced. Since the first sealing ring 3 is installed on the T-shaped core 24, the installation hole 12 is provided with an inclined section 126, and the first sealing ring 3 abuts against the inclined section 126. In this way, the residue sucked in can slide down along the inclined section 126 under the action of the suction force, thereby reducing the residue remaining on the inclined section 126 and reducing the abutment between the first sealing ring 3 and the residue during sealing, so as to prolong the service life of the first sealing ring 3, thereby making the suction effect of the suction cup more stable and ensuring the service life of the suction cup.

[0036] In addition, the general gas source uses a vacuum generator or a vacuum pump, or a vacuum pressure controller is provided outside the body 1 for conversion. The vacuum pressure controller is used in cooperation with the negative pressure, and a gas storage tank can also be added to make it more stable and also realize automatic pressure maintenance. At the same time, the operator can see the negative pressure value on the digital display table of the vacuum pump and the vacuum pressure controller, or see the vacuum pressure value on the vacuum table installed on the gas storage tank, so as to clearly know whether the vacuum pressure meets the requirements.

[0037] Meanwhile, the T-shaped core body 24 under the position without the workpiece is adsorbed to make the first sealing ring 3 abut against the inclined surface 126, and after the valve is closed, the negative pressure pressure between the T-shaped core body 24 and the channel of the body 1 still exists, so that the air pressure is kept in a fixed range, so that the first sealing ring 3 on the T-shaped core body 24 abuts against the inclined surface 126 all the time, so that the pressure between the workpiece and the vacuum chuck is greater than the external pressure, so as to achieve the purpose of automatic pressure maintaining and avoid the movement of the workpiece. Meanwhile, in the prior art, the vacuum pump or the vacuum pressure maintaining controller can be used in cooperation with the negative pressure, and the storage tank can also be increased to achieve the purpose of automatic pressure maintaining.

[0038] Further optimization scheme, the valve core sealing assembly 2 further includes stainless steel filter screen 21, C-shaped clamp spring 22, gasket 23 arranged in sequence, wherein the position of the C-shaped clamp spring and the stainless steel filter screen 21 can be interchanged, wherein the stainless steel filter screen 21 is installed above the mounting hole 12, the C-shaped clamp spring 22 is arranged between the stainless steel filter screen 21 and the gasket 23, the stainless steel filter screen 21 filters the residue generated by the workpiece processing, reduces the residue into the channel. In order to facilitate the fixation of the gasket 23, the gasket 23 is clamped on the side wall of the mounting hole 12, in order to make the plane where the gasket 23 is located perpendicular to the direction of the T-shaped core body 24, and at the same time make the T-shaped core body 24 rebound to the fixed position, the C-shaped clamp spring 22 can limit the up and down movement and parallel of the gasket 23, so that multiple T-shaped core bodies 24 are in the same position, the T-shaped core body 24 is slidably installed in the mounting hole 12, and there is a gap between the side wall of the T-shaped core body 24 and the side wall of the mounting hole 12 for gas to pass through, the T-shaped core body 24 is in contact with the spring 7, and the T-shaped core body 24 abuts against the gasket 23 under the elastic force of the spring 7, so as to close the adsorption hole 11. By such arrangement, it can avoid the entry of external objects into the airway.

[0039] Further optimization scheme, the installation hole 12 includes a first connecting section 121, a second connecting section 122, a void position 123, a third connecting section 124, a fourth connecting section 125 arranged in sequence, wherein the inclined section 126 is arranged between the third connecting section 124 and the fourth connecting section 125, and the diameters of the first connecting section 121, the second connecting section 122, the void position 123, the third connecting section 124 and the fourth connecting section 125 gradually decrease, wherein the stainless steel filter screen 21 and the C-shaped spring are installed in the first connecting section 121, the gasket 23 is installed in the second connecting section 122, so as to prevent the situation of falling off under negative pressure (or positive pressure), the T-shaped core body 24 is installed in the third connecting section 124, part of the T-shaped core body 24 can be inserted into the fourth connecting section 125, and the first diameter of the T-shaped core body 24 is greater than the diameter of the fourth connecting section 125 and less than the diameter of the third connecting section 124, so that the T-shaped core body 24 can be in communication with the passage for gas passing through the side wall of the third connecting section 124. The second diameter of the T-shaped core body 24 is less than the diameter of the fourth connecting section 125, and the spring 7 is installed in the fourth connecting section 125, wherein the first sealing ring 3 on the T-shaped core body 24 is clamped on the inclined section 126 to achieve sealing. Due to the arrangement of the inclined section 126, the residue is driven downward by the gas flow and gravity, reducing the probability of residue falling on the inclined section 126, avoiding the first sealing ring 3 from contacting the residue on the inclined section 126, thereby prolonging the service life of the first sealing ring 3, while ensuring the sealing effect.

[0040] Further optimization scheme, in order to ensure the tightness of the sealing, the T-shaped core body 24 includes a horizontal section 241 and a vertical section 242, an inner R groove is arranged on the side wall of the end of the horizontal section 241 close to the vertical section 242, and the first sealing ring 3 is installed in the inner R groove, so that the first sealing ring 3 can be prevented from separating from the inner R groove.

[0041] Further optimization scheme, the upper surface of the body 1 is provided with a detachable rubber protective pad 8, and the rubber protective pad 8 is provided with a through hole corresponding to the adsorption hole 11, so as to prevent the tool from cutting the body 1 and ensure the service life of the body 1. The rubber protective pad 8 has good friction, can prevent slipping when adsorbing the workpiece, and can make the workpiece more firmly adsorbed.

[0042] Further optimization scheme, in order to both to the inside of the gas, and can be extracted to the outside of the gas, the body 1 on the positive pressure valve 6 and negative pressure valve 5, when the gas is extracted to the outside, the negative pressure valve 5 opens, the gas between the workpiece and the body 1 is extracted, and then the workpiece is fixed, while the adsorption hole in the position without workpiece, under the action of pressure, make the first sealing ring 3 on the T type core body 24 on the valve core sealing assembly 2 and the inclined section 126 connected, and then make the adsorption hole 11 closed, when the processing is completed, the negative pressure valve 5 is closed, the positive pressure valve 6 is connected, the inside is filled with gas, the adsorption force between the workpiece and the body 1 is reduced. Under the action of pressure and spring force, the T type core body 24 moves upward and contacts the gasket 23, and then the adsorption hole 11 is closed, which is convenient for the operator to take down the workpiece, and at the same time, when the positive pressure valve is opened, the residual and cutting fluid remaining in the mounting hole 12 can also be sprayed out, and the residual is reduced.

[0043] Further optimization scheme, in order to realize the block area, the body 1 is provided with at least one set of vacuum area along the length or width direction, wherein the body 1 is provided with a set of vacuum area, the positive pressure valve 6 and the negative pressure valve 5 are arranged as a group, the body 1 is provided with two or more sets of vacuum area, the number of groups of the positive pressure valve 6 and the negative pressure valve 5 is the same as the number of groups of the vacuum area, and one to one correspondence, for the smaller workpiece, only one group needs to be opened, which can avoid opening the whole body 1, specifically, compared with the relatively large vacuum chuck, 3-6 vacuum areas can be set according to the demand to meet the use.

[0044] Further optimization scheme, further includes the base 9, the base 9 is detachably installed on the bottom surface of the body 1 through bolts, and the side surface of the base 9 and the side surface of the body 1 form a step, which is set to fix the base 9, wherein the material of the base is set as a steel plate, and the body is set as an aluminum alloy, so that the deformation of the vacuum chuck is avoided.

[0045] Further optimization scheme, the first tooth hole 91 is arranged on the step, which can be used for fixing, and is generally used for screw or lifting ring for carrying.

[0046] In addition, the upper end surface of the body 1 is provided with a positioning pin hole 17, and a pin can be fixed in the positioning pin hole 17, so as to facilitate the operator to position the workpiece.

[0047] Further optimization scheme, the main body 1 includes main body 13, cover plate 14, cover plate 14 is detachably installed on main body 13 by first screw, and annular sealing ring 16 is arranged between the two, the second U-shaped groove for installing annular sealing ring 16 is arranged on the main body, mounting hole 12 is arranged on main body 13, the side of main body 13 and cover plate 14 is provided with protrusion 131 along the transverse and longitudinal direction, and the top surface of protrusion 131 is in contact with cover plate 14, there is a certain distance between adjacent two protrusions 131, to form transverse air passage and longitudinal air passage, the position where transverse air passage and longitudinal air passage intersect is communicated with mounting hole 12.

[0048] Wherein, the area sealing ring 15 and the annular sealing ring 16 form a sealing ring group, the area sealing ring 15 is arranged between each single vacuum area, to ensure that each vacuum area can be controlled independently, to avoid the problem of gas leakage, and the annular sealing ring 16 is arranged on the periphery of the main body 1, to provide a guarantee again, to realize double-layer leakage prevention, when the cover plate 14 is covered on the main body 13, the gas can only flow through the transverse air passage and the longitudinal air passage, to transport the gas, wherein, in order to facilitate the installation of the area sealing ring 15 and the annular sealing ring 16, the U-shaped groove for installing the area sealing ring 15 and the annular sealing ring 16 is arranged on the main body 13.

[0049] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like in the description indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In the description herein, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0052] It can be understood that the same or similar parts in the above embodiments can be mutually referenced, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments. The multiple schemes provided by the present application contain the basic scheme itself, are independent of each other, and do not restrict each other, but can also be combined with each other without conflict to achieve multiple effects together.

[0053] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the person skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A novel vacuum cup pneumatic chuck, characterized by, The utility model relates to a kind of vacuum chucking device, including: The body (1) has suction disc platform, and a plurality of adsorption holes (11) are distributed on the suction disc platform, for adsorbing workpiece; A plurality of mounting holes (12) are provided in the body (1) and connected with the adsorption holes (11), wherein one end of the mounting hole (12) is connected with the adsorption hole (11), and the other end is used for connecting with gas source; Valve core sealing assembly (2) is installed in the mounting hole (12), and the mounting hole (12) is provided with an inclined section (126), the T-shaped core body (24) of the valve core sealing assembly (2) is provided with a first sealing ring (3), and the first sealing ring (3) can abut against the inclined section (126), a spring (7) is arranged between the second end of the T-shaped core body (24) and the mounting hole (12), the spring (7) makes the T-shaped core body (24) close to the adsorption hole (11), wherein there is a certain gap between the side wall of the T-shaped core body (24) and the side wall of the mounting hole (12) for gas to pass through, and the T-shaped core body (24) can make the workpiece adsorb or separate from the suction cup under the pressure of gas source and / or the spring (7).

2. The novel vacuum cup pneumatic chuck according to claim 1, characterized in that, The valve core sealing assembly (2) further includes a stainless steel filter screen (21), a C-shaped clamp spring (22) and a gasket (23) arranged in sequence, wherein the stainless steel filter screen (21) is installed above the mounting hole (12), the gasket (23) is clamped on the side wall of the mounting hole (12), and the C-shaped clamp spring (22) is arranged between the stainless steel filter screen (21) and the gasket (23), and the first end of the T-shaped core body (24) is in contact with the gasket (23).

3. The novel vacuum cup pneumatic chuck according to claim 2, characterized in that, The mounting hole (12) includes a first connecting section (121), a second connecting section (122), an empty space (123), a third connecting section (124) and a fourth connecting section (125) arranged in sequence and decreasing in diameter, the inclined section (126) is arranged between the third connecting section (124) and the fourth connecting section (125), the spring (7) is installed in the fourth connecting section (125), the T-shaped core body (24) is installed in the third connecting section (124), the first diameter of the T-shaped core body (24) is greater than the diameter of the fourth connecting section (125) and less than the diameter of the third connecting section (124), and the second diameter of the T-shaped core body (24) is less than the diameter of the fourth connecting section (125).

4. The novel vacuum cup pneumatic chuck according to claim 2, characterized in that, The T-shaped core body (24) includes a horizontal section (241) and a vertical section (242), the inner R groove is arranged on the side wall close to one end of the vertical section (242), and the first sealing ring (3) is installed in the inner R groove.

5. The novel vacuum cup pneumatic chuck as claimed in claim 1, wherein, The upper surface of the body (1) is provided with a detachable rubber protective pad (8), and the rubber protective pad (8) is provided with through holes corresponding to the adsorption holes (11).

6. The novel vacuum cup pneumatic chuck as claimed in claim 1, wherein, The body (1) is provided with a positive air pressure valve (6) and a negative air pressure valve (5), and the positive air pressure valve (6) and the negative air pressure valve (5) are communicated with the suction cup.

7. The novel vacuum cup pneumatic chuck as claimed in claim 6, wherein, The body (1) is provided with at least one group of vacuum areas along the length or width direction, wherein the body (1) is provided with a group of vacuum areas, the positive air pressure valve (6) and the negative air pressure valve (5) are arranged as a group, the body (1) is provided with more than two groups of vacuum areas, the number of groups of the positive air pressure valve (6) and the negative air pressure valve (5) is the same as the number of groups of the vacuum areas, and each single vacuum area is provided with a region sealing ring (15) around the periphery to ensure the sealing performance of each vacuum area, and the body (1) is designed with a first U-shaped groove for installing the region sealing ring (15).

8. The novel vacuum cup pneumatic chuck as claimed in claim 1, wherein, A base (9) is further included, which is detachably mounted on the bottom surface of the body (1) through bolts, and the side surface of the base (9) forms a step with the side surface of the body (1) to fix the base (9).

9. The novel vacuum cup pneumatic chuck as claimed in claim 8, wherein, The step is provided with a first tooth hole (91).

10. The novel vacuum cup pneumatic chuck as claimed in claim 1, wherein, The body (1) includes a main body (13) and a cover plate (14), the cover plate (14) is detachably mounted on the main body (13) through a first screw, and a sealing ring group is arranged between the main body (13) and the cover plate (14), the mounting hole (12) is arranged on the main body (13), the end surface of the main body (13) in contact with the cover plate (14) is provided with a protrusion (131) arranged in the transverse and longitudinal directions, the top surface of the protrusion (131) abuts against the cover plate (14), and there is a certain distance between two adjacent protrusions (131) to form a transverse air passage and a longitudinal air passage, and the position where the transverse air passage intersects with the longitudinal air passage is communicated with the mounting hole (12).

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