CN212421027U - Suction clamp - Google Patents

Abstract

The utility model discloses a suction anchor clamps, including first main part, second main part and case device, be formed with the open vacuum cavity in top in the first main part, the top of first main part is located to the second main part, be formed with a plurality of air vents in the second main part, the top surface of second main part all is run through to the upper end of every air vent, the bottom surface that the second main part all runs through to the lower extreme of every air vent and communicates with the vacuum cavity, every air vent is respectively by corresponding case device control switch, when the real cavity is bled, the case device relative with the open air vent in top receives the suction of vacuum cavity to close corresponding air vent, the case device relative with the air vent that the work piece sheltered from at the top keeps opening the state of corresponding air vent, so that the work piece receives the suction of vacuum cavity to adsorb in the top surface of second main part. Therefore, when the vacuum cavity is pumped, the valve core device at the vent hole of the non-workpiece area can automatically close the corresponding vent hole under the suction action of the vacuum cavity, so that the use is convenient.

Description

Suction clamp

Technical Field

The utility model belongs to the technical field of the anchor clamps technique and specifically relates to a suction anchor clamps is related to.

Background

In anchor clamps technical field, the last open air vent that has of vacuum suction device, need be to the work piece of unidimensional before processing, the vacuum suction device of design unidimensional to make the work piece can shutoff all air vents, like this, when to whole air vent evacuation, can make the work piece reliably adsorbed, however, owing to need design vacuum suction device respectively according to the work piece of every size, thereby can waste more processing raw and other materials and processing cost, moreover, when the work piece changes, the vacuum suction device of other sizes still need be changed, be unfavorable for the quick switch-over of use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a suction anchor clamps, suction anchor clamps have the advantage that the commonality is good, and convenient to use.

The suction clamp comprises a first main body, wherein a vacuum cavity with an open top is formed on the first main body, and a vacuumizing air hole communicated with the vacuum cavity is also formed on the first main body; the second main body is arranged above the first main body, the top surface of the second main body is suitable for placing a workpiece, a plurality of vent holes are formed in the second main body, the upper end of each vent hole penetrates through the top surface of the second main body, and the lower end of each vent hole penetrates through the bottom surface of the second main body and is communicated with the vacuum cavity; and each vent hole is provided with one valve core device, so that each vent hole is controlled to be opened and closed by the corresponding valve core device, when the vacuum cavity is pumped out from the vacuum pumping air hole, the valve core device opposite to the vent hole with the opened top is closed by the suction force of the vacuum cavity, and the valve core device opposite to the vent hole with the top covered by a workpiece keeps the state of opening the corresponding vent hole, so that the workpiece is adsorbed on the top surface of the second main body by the suction force of the vacuum cavity.

According to the utility model discloses suction anchor clamps, when the vacuum cavity is bled, the case device of no work piece region's vent department can receive the suction effect self-closing corresponding air vent of vacuum cavity, the second main part has the regional air vent of work piece to keep opening, the work piece can be adsorbed in the second main part reliably from this, thereby it is good to make suction anchor clamps commonality, adaptable not unidimensional work piece, and then can save material and the cost to the different vacuum suction devices of different work piece preparation, also can be convenient for change different work pieces and adsorb. In addition, the valve core device at the vent hole of the non-workpiece area automatically closes the corresponding vent hole under the suction effect of the vacuum cavity, so that manual closing is not needed, or other additional modes such as water spraying and the like are adopted to close the vent holes, the operation is simplified, and the use is facilitated.

In some embodiments, a support ring table is arranged in the vent hole, the vent hole comprises an upper hole section which is positioned above the support ring table, and the valve core device comprises a sealing ring which is arranged at the top of the support ring table; the valve core rod comprises a valve head part and a valve rod part, the valve head part is positioned in the upper hole section and is positioned above the sealing ring, the valve rod part extends downwards from the bottom surface of the valve head part and downwards penetrates through the sealing ring and the supporting ring platform, and an air passing gap is formed between the valve rod part and the inner wall of the supporting ring platform; when the valve core rod descends to enable the valve head part to press the sealing ring downwards, the valve head part and the sealing ring close the vent hole together.

In some embodiments, the vent hole further comprises a lower hole section below the support ring platform, the valve core device further comprises a limiting rod, the limiting rod is assembled and connected with the valve rod part, the limiting rod comprises a shoulder part and a shaft part, the shoulder part is positioned in the lower hole section and is limited by the support ring platform to be positioned below the support ring platform, and the shaft part extends downwards from the bottom surface of the shoulder part; the spring is sleeved on the shaft part, the lower end of the spring abuts against the first main body, and the upper end of the spring abuts against the shoulder part, so that the spring applies upward lifting elastic force to the shoulder part.

In some embodiments, a positioning hole recessed downward is formed on the bottom wall of the vacuum chamber, and the lower end of the spring extends into the positioning hole and abuts against the bottom wall of the positioning hole.

In some embodiments, a rotation stopping hole recessed downward is formed in a bottom wall of the positioning hole, the limiting rod further includes a rotation stopping portion extending downward from a bottom surface of the shaft portion and extending into the rotation stopping hole, and the rotation stopping hole and the rotation stopping portion are matched through a non-circular surface to limit rotation of the limiting rod relative to the first body.

In some embodiments, the valve rod part is provided with an external thread, the limiting rod is provided with an internal thread hole with an open top, and the valve rod part is assembled and connected with the limiting rod through the matching of the external thread and the internal thread hole.

In some embodiments, the valve head has a tool bore with an open top and a non-circular cross-section.

In some embodiments, the suction jig further comprises a positioning device, the positioning device is disposed on the second main body, and at least a portion of the positioning device protrudes above the top surface of the second main body for positioning a workpiece.

In some embodiments, the positioning device includes at least one positioning block, and the top edge of the first body is provided with a positioning groove recessed downward, and the positioning block is in positioning fit with the positioning groove.

In some embodiments, the positioning device includes two positioning blocks, namely a first positioning block and a second positioning block, the positioning grooves are respectively disposed at two adjacent edge positions of the top surface of the first body, namely a first positioning groove and a second positioning groove, the first positioning block is in positioning fit with the first positioning groove, and the second positioning block is in positioning fit with the second positioning groove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a suction jig according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the suction fixture shown in FIG. 1 engaged with a workpiece;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a partial cross-sectional view of the suction clip shown in FIG. 1;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a partial cross-sectional view of the second body shown in FIG. 1;

FIG. 7 is a partial cross-sectional view at another angle of the second body shown in FIG. 6;

FIG. 8 is a partial cross-sectional view of the first body shown in FIG. 1;

fig. 9 is a partial enlarged view at C in fig. 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Next, with reference to fig. 1 to 9, a suction jig 1000 according to an embodiment of the present invention is described.

For example, in one embodiment, the suction jig 1000 may be connected to a robot or mechanical device for suction-holding the workpiece 2000 for handling or processing of the workpiece 2000.

As shown in fig. 1, a suction jig 1000 according to an embodiment of the present invention includes a first body 100, a second body 200, and a valve cartridge device 300. Referring to fig. 2 to 3, the first body 100 is formed with a vacuum chamber 110 having an open top, and the first body 100 is further formed with vacuum vents 120 communicating with the vacuum chamber 110. The second body 200 is disposed above the first body 100, and a top surface of the second body 200 is adapted to receive the workpiece 2000, the second body 200 is formed with a plurality of vent holes 210, an upper end of each vent hole 210 penetrates through a top surface of the second body 200, and a lower end of each vent hole 210 penetrates through a bottom surface of the second body 200 and communicates with the vacuum chamber 110.

Referring to fig. 2 to 3, each vent hole 210 is provided with a valve core device 300, so that each vent hole 210 is controlled to be opened and closed by the corresponding valve core device 300, wherein when the vacuum cavity 110 is evacuated from the evacuation vent 120, the valve core device 300 opposite to the vent hole 210 with the open top is closed by the suction force of the vacuum cavity 110, and the valve core device 300 opposite to the vent hole 210 with the top covered by the workpiece 2000 keeps the state of opening the corresponding vent hole 210, so that the workpiece 2000 is sucked to the top surface of the second main body 200 by the suction force of the vacuum cavity 110.

It should be noted that workpieces 2000 with different sizes can cover different numbers of vent holes 210, vent holes 210 not covered by the workpieces 2000 can be closed by the valve core device 300, vent holes 210 covered by the workpieces 2000 can be opened by the valve core device 300, when the vacuum chamber 110 is vacuumized, low pressure in the vacuum chamber 110 can act on the lower surface of the workpiece 2000 through the opened vent holes 210, and atmospheric pressure can act on the upper surface of the workpiece 2000, so that the workpiece 2000 can be reliably adsorbed to the suction jig 1000 under the action of the difference between the upper and lower pressures.

That is, in the embodiment of the present application, by the structural design of the valve body device 300, the following is achieved: when the top surface of the vent hole 210 is not provided with the workpiece 2000 in an open state, if the vacuum chamber 110 is evacuated from the evacuation vent holes 120, the valve core device 300 at the vent hole 210 can automatically close the vent holes 210 under the action of the difference between the upper and lower pressures, so that the air outside the suction jig 1000 can not enter the vacuum chamber 110 through the closed vent holes 210, so that the vacuum chamber 110 can be evacuated, and for the vent hole 210 with the workpiece 2000 on the top surface, the valve core device 300 can keep the state of opening the vent holes 210, so that the vacuum chamber 110 can reliably suck the workpiece 2000 through the opened vent holes 210 under the action of the vacuum chamber 110 with the evacuation.

In short, since the valve core device 300 can be designed by its own structure and is affected by pressure difference, the vent holes 210 that are not correspondingly disposed on the workpiece 2000 are closed, so that there is no need to manually drive the valve core device 300 to move, and there is no need to drive the valve core devices 300 to move to close the vent holes 210 by other additional methods, such as water spraying, etc., so as to simplify the operation. Further, it is not necessary for the work 2000 to cover all the vent holes 210, and it is possible to adapt to suction of works 2000 of different sizes without redesigning the suction jig 1000 for works 2000 of different sizes.

It should be noted that the top surface of the second body 200 is not limited to be upward when in use, and for example, the entire device may be placed vertically, obliquely, or turned upside down, and the above description of the upper and lower portions of the valve body device 300 and the upper and lower surfaces of the workpiece 2000 is only an exemplary description that the top surface of the second body 200 is upward, and is not intended to limit the present invention.

Therefore, according to the suction jig 1000 of the embodiment of the present invention, by providing the valve core device 300 capable of self-locking (i.e. capable of automatically closing the corresponding vent hole 210 under the action of pressure difference) at each vent hole 210, when the vacuum chamber 110 is evacuated, the vent hole 210 of the second main body 200 in the region without the workpiece 2000 can be self-locked by the corresponding valve core device 300, and the vent hole 210 of the second main body 200 in the region with the workpiece 2000 is kept open, so that the workpiece 2000 can be reliably adsorbed on the second main body 200. The utility model discloses a suction anchor clamps 1000 commonality is good, adaptable not unidimensional work piece 2000 to can save material and the cost of inhaling the device to the different vacuums of different work piece 2000 preparation, also do benefit to the adsorbed fast switch-over to different work piece 2000.

In some embodiments of the present invention, as shown in fig. 2-3 and 6, a support ring table 211 is disposed in the vent hole 210, the vent hole 210 includes an upper hole section 212 located above the support ring table 211, the valve core device 300 includes a sealing ring 310 and a valve core rod 320, the sealing ring 310 can better seal the vent hole 210, the sealing performance of the valve core device 300 is improved, the sealing ring 310 is disposed at the top of the support ring table 211, the valve core rod 320 includes a valve head portion 321 and a valve rod portion 322, the valve head portion 321 is located in the upper hole section 212 and located above the sealing ring 310, the valve rod portion 322 is downwardly extended from the bottom surface of the valve head portion 321, and passes through the sealing ring 310 and the support ring table 211, and an air passing gap is disposed between the valve rod portion 322 and the inner wall of the support ring table.

Therefore, when the vacuum cavity 110 is evacuated, the gas at the bottom of the valve head 321 can be evacuated to the vacuum cavity 110 through the air passing gap, so that a pressure difference exists between the upper surface and the lower surface of the valve head 321, and the valve core rod 320 can descend under the action of the pressure difference, so that the valve head 321 presses the sealing ring 310 downwards, and the valve head 321 and the sealing ring 310 jointly close the vent hole 210. Thus, the valve core device 300 has a simple structure, and can simply and effectively realize self-locking (i.e., the corresponding vent hole 210 can be automatically closed under the action of pressure difference).

It can be understood that, when the vacuum chamber 110 is evacuated from the evacuation vent 120, the valve core rod 320 moves downward (at the lower side as shown in fig. 2), and after the lower end of the valve head 321 abuts against the sealing ring 310, the center of the sealing ring 310 is driven downward (at the lower side as shown in fig. 2) to compress, so that the sealing ring 310 presses the supporting ring table 211, and meanwhile, the valve head 321 presses the sealing ring 310 downward, the valve head 321 and the sealing ring 310 close the vent hole 210 together, and the gas at the top of or around the valve head 321 in the vent hole 210 cannot flow to the vacuum chamber 110 through the gas gap any more, thereby achieving the reliable closing of the vent hole 210.

Referring to fig. 2-3 and 6, according to some embodiments of the present invention, the vent hole 210 further includes a lower hole section 213 located below the support ring table 211, the valve core device 300 further includes a limiting rod 330 and a spring 340, the limiting rod 330 is assembled with the valve rod portion 322, the limiting rod 330 includes a shoulder portion 331 and a shaft portion 332, the shoulder portion 331 is located in the lower hole section 213 and is located below the support ring table 211 under the limitation of the support ring table 211, and the shaft portion 332 is extended downward from the bottom surface of the shoulder portion 331. The spring 340 is sleeved on the shaft portion 332, a lower end of the spring 340 abuts against the first body 100, and an upper end of the spring 340 abuts against the shoulder 331, so that the spring 340 applies an upward lifting elastic force to the shoulder 331. Therefore, when the workpiece 2000 needs to be removed, the vacuum chamber 110 is stopped from being pumped, the air pressure of the vacuum pumping hole 120 is recovered, and the valve core device 300 which is originally in the state of closing the vent hole 210 can automatically open the vent hole 210 under the action of the spring 340, so that the vacuum chamber 210 loses the vacuum state quickly, and the workpiece 2000 is released quickly.

It is understood that when the vacuum chamber 110 is evacuated from the evacuation vent 120, the valve rod 322 moves downward (at the lower side in fig. 2) to move the limiting rod 330 downward (at the lower side in fig. 2), and the spring 340 is pressed downward; when the vacuum chamber 110 stops being evacuated when the suction jig 1000 does not need to be operated, the spring 340 is deformed again, and an upward-raised elastic force is applied to the shoulder 331, so that the shoulder 331 moves upward (upward in fig. 2), the stem portion 322 is moved upward (upward in fig. 2), and the head portion 321 is moved upward (upward in fig. 2), and the sealing ring 310 and the head portion 321 are sealed, whereby the vent hole 210 is opened.

In some embodiments of the present invention, as shown in fig. 2-3 and 8-9, the bottom wall of the vacuum chamber 110 is formed with a positioning hole 111 recessed downward, and the lower end of the spring 340 extends into the positioning hole 111 and abuts against the bottom wall of the positioning hole 111. Therefore, the bottom wall of the positioning hole 111 can limit and provide a supporting force for the lower end of the spring 340, so that the spring 340 can reliably work and can be kept to reliably work at a position opposite to the corresponding vent hole 210, and the problem of deviation from the working position does not occur.

It can be understood that when the shoulder 331 moves downward to press the spring 340, the spring 340 can be elastically deformed, and when the suction jig 1000 does not need to work, the vacuum chamber 110 stops being vacuumized, the spring 340 can recover the deformation, and an upward lifting elastic force is applied to the shoulder 331, so that the shoulder 331 moves upward (upward as shown in fig. 2), the valve stem 322 is driven to move upward (upward as shown in fig. 2), and the valve head 321 is driven to move upward (upward as shown in fig. 2), so that the sealing ring 310 and the valve head 321 are sealed to fail, thereby opening the vent 210.

As shown in fig. 4-5, in some embodiments of the present invention, the stem portion 322 has an external thread 3221 thereon, the stop rod 330 has an internal threaded hole 334 with an open top, and the stem portion 322 is assembled and connected to the stop rod 330 by the external thread 3221 matching with the internal threaded hole 334. Thus, the external thread 3221 is provided on the stem portion 322, and the internal thread hole 334 is provided on the stopper rod 330, which facilitates the connection and disconnection of the stem portion 322 and the stopper rod 330, and ensures that the valve cartridge device 300 including the stem portion 322 and the stopper rod 330 can be assembled with the second body 200.

With reference to fig. 4-5, according to some embodiments of the present invention, the bottom wall of the positioning hole 111 is formed with a rotation stopping hole 112 recessed downward, the limiting rod 330 further includes a rotation stopping portion 333, the rotation stopping portion 333 extends downward from the bottom surface of the shaft portion 332 and extends into the rotation stopping hole 112, and the rotation stopping hole 112 and the rotation stopping portion 333 are engaged with each other through a non-circular surface to limit the rotation of the limiting rod 330 relative to the first body 100. Therefore, the valve rod portion 322 and the limiting rod 330 can be assembled conveniently, for example, the limiting rod 330 is positioned between the first main body 100 and the second main body 200 by the rotation stopping portion 333, then the valve core rod 320 is rotated, the threaded connection between the valve rod portion 322 and the limiting rod 330 can be realized, and the valve core rod 320 and the limiting rod 330 can be ensured to move up and down (up and down as shown in fig. 2) smoothly to meet the use requirement of closing and opening the vent hole 210.

In some embodiments of the present invention, as shown in fig. 2-3, the valve head 321 has a tool hole 3211 with an open-top and non-circular cross-section. Therefore, a tool can extend into the tool hole 3211 to assemble the valve core rod 320 to the limiting rod 330 or disassemble the valve rod 322 and the limiting rod 330, so as to facilitate connection and disassembly of the valve rod 322 and the limiting rod 330, for example, the limiting rod 330 is positioned between the first main body 100 and the second main body 200 by the rotation stopping part 333, and then the valve rod 322 and the limiting rod 330 can be connected by screwing the tool through the matching of the tool and the tool hole 3211 and rotating the valve core rod 320 by the tool, and similarly, the tool is rotated reversely, so that disassembly of the valve rod 322 and the limiting rod 330 can be realized.

With reference to fig. 2-3, according to some embodiments of the present invention, the suction jig 1000 further includes a positioning device 400, the positioning device 400 is disposed on the second main body 200, and at least a portion of the positioning device 400 protrudes above the top surface of the second main body 200 for positioning the workpiece 2000. Thus, a portion of the positioning device 400 protruding above the top surface of the second body 200 may abut against the workpiece 2000, so that the workpiece 2000 may be stably positioned on the second body 200, and the suction jig 1000 may more reliably adsorb the workpiece 2000.

In some embodiments of the present invention, as shown in fig. 2-3, the positioning device 400 includes at least one positioning block, that is, the positioning device 400 may include one positioning block, and the positioning device 400 may also include a plurality of positioning blocks. The edge of the top surface of the first body 100 is provided with a positioning groove 220 recessed downward, and the positioning block is positioned and fitted in the positioning groove 220. The positioning groove 220 may be provided such that a positioning block may be reliably mounted on the second body 200 to reliably position the workpiece 2000, such that the workpiece 2000 may be stably positioned on the second body 200, and the suction jig 1000 may more reliably adsorb the workpiece 2000.

In some embodiments of the present invention, as shown in fig. 2-3, the positioning device 400 includes two positioning blocks, namely a first positioning block 410 and a second positioning block 420, the two adjacent edge positions of the top surface of the first body 100 are respectively provided with a positioning groove 220, namely a first positioning groove 221 and a second positioning groove 221, the first positioning block 410 is in positioning fit with the first positioning groove 221, and the second positioning block 420 is in positioning fit with the second positioning groove 221. It can be understood that the first positioning groove 221 can reliably mount the first positioning block 410 on the second body 200, the second positioning groove 221 can reliably mount the second positioning block 420 on the second body 200, and the first positioning block 410 and the second positioning block 420 can position two adjacent sides of the workpiece 2000, whereby the workpiece 2000 can be reliably positioned, so that the workpiece 2000 can be stably positioned on the second body 200, and the suction jig 1000 can more reliably suck the workpiece 2000.

Moreover, since the first positioning block 410 and the second positioning block 420 are positioned at two adjacent sides of the workpiece 2000, not at two opposite sides, nor around the entire circumference, when the size of the workpiece 2000 is larger than that of the second body 200, the positioning blocks do not cause interference limitation to the workpiece 2000, so that the suction jig 1000 can be applied.

With reference to fig. 7 to 8, according to some embodiments of the present invention, the first body 100 has a first mounting portion 130, a plurality of spaced apart first connection holes 131 are opened in a circumferential direction of the first mounting portion 130, the second body 200 has a second mounting portion 240, a plurality of spaced apart second connection holes 241 are opened in a circumferential direction of the second mounting portion 240, and the first connection holes 131 and the second connection holes 241 are in one-to-one correspondence and connected by screws. Thereby, the first body 100 and the second body 200 can be reliably coupled together. The first and second bodies 100 and 200 can be easily mounted and dismounted by screw coupling, so that the maintainability of the suction jig 1000 can be improved.

In some embodiments of the present invention, as shown in fig. 2 and 7, the second body 200 further has a sealing groove 230, and a sealing strip 600 is located in the sealing groove 230 to seal a gap between the first body 100 and the second body 200. Therefore, the sealing performance of the vacuum chamber 110 can be improved, so that when the vacuum chamber 110 is vacuumized, a vacuum environment can be better possessed, and the workpiece 2000 can be more reliably adsorbed.

In some embodiments of the present invention, as shown in fig. 1-4, evacuation vents 120 are adapted to be connected to a vacuum generation fitting 500, and vacuum generation fitting 500 may be connected to a vacuum generator to evacuate gas from vacuum chamber 110.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A suction clip (1000), comprising:

the vacuum cleaner comprises a first body (100), wherein a vacuum cavity (110) with an open top is formed in the first body (100), and a vacuum-pumping air hole (120) communicated with the vacuum cavity (110) is formed in the first body (100);

the second main body (200), the second main body (200) is arranged above the first main body (100), the top surface of the second main body (200) is suitable for placing a workpiece (2000), a plurality of vent holes (210) are formed in the second main body (200), the upper end of each vent hole (210) penetrates through the top surface of the second main body (200), and the lower end of each vent hole (210) penetrates through the bottom surface of the second main body (200) and is communicated with the vacuum chamber (110);

the valve core device (300) is arranged at each vent hole (210), so that each vent hole (210) is controlled to be opened and closed by the corresponding valve core device (300), when the vacuum chamber (110) is evacuated from the evacuation vent hole (120), the valve core device (300) opposite to the vent hole (210) with the open top is closed by the suction force of the vacuum chamber (110), and the valve core device (300) opposite to the vent hole (210) with the top covered by a workpiece (2000) keeps the state of opening the corresponding vent hole (210), so that the workpiece (2000) is adsorbed on the top surface of the second main body (200) by the suction force of the vacuum chamber (110).

2. The suction clamp (1000) of claim 1, wherein a support land (211) is provided within the vent hole (210), the vent hole (210) including an upper hole section (212) above the support land (211), the spool arrangement (300) comprising:

the sealing ring (310) is arranged at the top of the supporting ring table (211);

the valve core rod (320) comprises a valve head part (321) and a valve rod part (322), the valve head part (321) is positioned in the upper hole section (212) and above the sealing ring (310), the valve rod part (322) extends downwards from the bottom surface of the valve head part (321) and downwards penetrates through the sealing ring (310) and the support ring platform (211), and an air passing gap is formed between the valve rod part (322) and the inner wall of the support ring platform (211);

when the valve core rod (320) descends to enable the valve head part (321) to press the sealing ring (310) downwards, the valve head part (321) and the sealing ring (310) close the vent hole (210) together.

3. The suction clamp (1000) of claim 2, wherein the vent hole (210) further comprises a down hole section (213) located below the support ring table (211), the spool arrangement (300) further comprising:

the limiting rod (330) is assembled and connected with the valve rod part (322), the limiting rod (330) comprises a shoulder part (331) and a shaft part (332), the shoulder part (331) is positioned in the lower hole section (213) and is limited by the support ring platform (211) to be positioned below the support ring platform (211), and the shaft part (332) extends downwards from the bottom surface of the shoulder part (331);

the spring (340), the shaft portion (332) is located in the sleeved mode by the spring (340), the lower end of the spring (340) abuts against the first main body (100), and the upper end of the spring (340) abuts against the shoulder portion (331), so that the spring (340) exerts an upward lifting elastic force on the shoulder portion (331).

4. The suction jig (1000) of claim 3, wherein a positioning hole (111) recessed downward is formed on the bottom wall of the vacuum chamber (110), and the lower end of the spring (340) extends into the positioning hole (111) and abuts against the bottom wall of the positioning hole (111).

5. The suction jig (1000) of claim 4, wherein the bottom wall of the positioning hole (111) is formed with a rotation stop hole (112) recessed downward, the limiting rod (330) further comprises a rotation stop portion (333), the rotation stop portion (333) extends downward from the bottom surface of the shaft portion (332) and extends into the rotation stop hole (112), and the rotation stop hole (112) and the rotation stop portion (333) are engaged with each other through a non-circular surface to limit the rotation of the limiting rod (330) relative to the first body (100).

6. The suction clamp (1000) according to claim 3, wherein the valve rod portion (322) is provided with an external thread (3221), the limiting rod (330) is provided with an internal thread hole (334) with an open top, and the valve rod portion (322) is assembled and connected with the limiting rod (330) through the matching of the external thread (3221) and the internal thread hole (334).

7. The suction clamp (1000) of claim 6, wherein the valve head (321) has an open-topped, non-circular cross-section tool bore (3211) therein.

8. The suction clamp (1000) according to any of claims 1-7, further comprising:

the positioning device (400) is arranged on the second main body (200), and at least part of the positioning device (400) protrudes above the top surface of the second main body (200) so as to be used for positioning a workpiece (2000).

9. The suction clamp (1000) according to claim 8, wherein the positioning device (400) comprises at least one positioning block, the top edge of the first body (100) is provided with a positioning groove (220) recessed downwards, and the positioning block is positioned and matched with the positioning groove (220).

10. The suction jig (1000) of claim 9, wherein the positioning device (400) comprises two positioning blocks, namely a first positioning block (410) and a second positioning block (420), the positioning grooves (220) are respectively arranged at two adjacent edge positions of the top surface of the first main body (100), namely a first positioning groove (221) and a second positioning groove (222), the first positioning block (410) is positioned and matched with the first positioning groove (221), and the second positioning block (420) is positioned and matched with the second positioning groove (222).

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