CN108843678A - Vacuum chuck - Google Patents
Vacuum chuck Download PDFInfo
- Publication number
- CN108843678A CN108843678A CN201810583975.XA CN201810583975A CN108843678A CN 108843678 A CN108843678 A CN 108843678A CN 201810583975 A CN201810583975 A CN 201810583975A CN 108843678 A CN108843678 A CN 108843678A
- Authority
- CN
- China
- Prior art keywords
- sucker
- spool
- vacuum chuck
- platen
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002156 adsorbate Substances 0.000 claims abstract description 9
- 239000003463 adsorbent Substances 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 6
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B47/00—Suction cups for attaching purposes; Equivalent means using adhesives
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
A vacuum chuck mainly comprises a chuck and a pressure plate, wherein the pressure plate is pressed on the periphery of the chuck, an upward protruding air nozzle is arranged on the top of the pressure plate, a one-way valve is arranged in the air nozzle, an air pump sucks air in the pressure plate through the air nozzle, a first negative pressure area is generated between the inner wall of the pressure plate and the chuck, the middle part of the chuck is deformed towards the pressure plate, and a second negative pressure area is generated between the chuck and the surface of an adsorbate; be equipped with outside outstanding air cock on the pressure disk top, be equipped with check valve and position sleeve in the air cock, the pressure disk presses the sucking disc on the adsorbate surface, the reuse air pump passes through the air cock and takes away the air between pressure disk and the sucking disc, make to form first negative pressure zone between pressure disk and the sucking disc, thereby the pulling sucking disc is warp to the direction of air cock, form second negative pressure zone between sucking disc and adsorbate surface, thereby make the sucking disc inhale tightly on the adsorbate surface, first negative pressure zone makes the pressure disc compress tightly around the sucking disc to the suction of pressure disk, thereby make the sucking disc be difficult for producing gas leakage.
Description
Technical field
The present invention relates to a kind of vacuum chucks, belong to the optimisation technique of sucker.
Background technique
Vacuum chuck can be adsorbed on the surfaces such as glass, ceramic tile, for hanging or grabbing object.Since vacuum chuck can
Random running transform position, so very easy to use.
Vacuum chuck generally uses silicon rubber or PVC material or polyurethane or nitrile rubber or the polymer containing vinyl etc.
There is the certain rigidity of tool certain flexible plastic material to be made again.The structure of most of vacuum chuck is hollow-cone body,
Sucker wall surface towards adsorbent surface is the taper that is recessed upwards of middle part, sucker is against after adsorbent surface to suction when use
In the middle part of the pressing sucker of addendum surface, it is extruded the air in the conical cavity of sucker, then decontrols sucker, sucker is in self-resetting
During generate negative pressure in the conical cavity of sucker, so that sucker is adsorbed on the surface of article, or sucker is against suction
Sucker chamber air is extracted behind addendum surface again, makes the intracavitary formation negative pressure of sucker so as to suck on the surface of adsorbate.This
Class sucker generates suction by itself deformation or pumping, and the inner wall of sucker and edge are resetted by sucker when in use generates
An inside pulling force, the edge that may cause sucker move inward leaks air to from adsorbent surface slide.
It is, thus, sought for a kind of sucker for being not easy gas leakage.
Summary of the invention
The object of the present invention is to provide a kind of suckers for being not easy gas leakage.
The technical scheme is that：A kind of vacuum chuck, mainly includes sucker 1, platen 2, and platen is pressed in sucker surrounding
Edge is equipped with upward gas nozzle 21 on platen top, check valve 3 is equipped in gas nozzle, and air pump will be in platen by gas nozzle
Air is sucked out, and the first negative pressuren zone is generated between platen inner wall and sucker, makes Direction distortion of the middle part of sucker to platen, is inhaling
The second negative pressuren zone is generated between disk and adsorbent surface；The check valve includes spool and valve rod, and spool is bullet；Gas nozzle
Inner hole is equipped with a circle valve platform, and the side that valve platform be open towards gas nozzle is taper, when spool the bearing by the first negative pressuren zone of check valve
When pressing inspiration valve platform, spool jams valve platform inner hole；The vacuum chuck further includes positioning sleeve 4, and positioning sleeve is equipped with external screw thread,
Bracket is equipped in positioning sleeve inner hole, the valve rod of check valve passes through the centre bore of positioning sleeve bracket, and positioning sleeve is screwed in gas nozzle inner wall
Internal screw thread on, bracket blocks spool, makes spool between valve platform and positioning sleeve；A upper spring 5 is covered on valve rod, makes bullet
Spring is between spool and bracket, and under tension force of spring, spool is lifted off bracket, and spool is made to enter valve platform and blocking valve platform；
The vacuum chuck further includes suspender 7, and suspender is equipped with the connecting column being threadedly coupled with gas nozzle, and suspender passes through connection
Column is screwed on gas nozzle；When need vacuum chuck inhale in adsorbent surface, sucker is pressed on adsorbent surface, then
The suction nozzle of air pump is connected with the gas nozzle on platen top, and outside air-breathing when air pump works, spool is overcome spring to be opened by suction
Power is mobile to the suction nozzle direction of air pump, so that spool be made to leave valve platform, gap, the sky in platen are generated between spool and valve platform
Gap of the gas between spool and valve platform is sucked into the suction nozzle of air pump, and the air that air pump is taken away is more, between platen and sucker
The negative pressure of first negative pressuren zone is also bigger, and sucker will form second to the Direction distortion of gas nozzle between sucker and adsorbate
Negative pressuren zone, the air that air pump is taken away is more, and the deformation in sucker to gas nozzle direction is also bigger, and the space of the second negative pressuren zone is also got over
Greatly；After the suction nozzle of air pump is extracted, spool is drawn into valve platform blocking valve platform by the first negative pressure space, to will not generate
Gas leakage.
The center of bracket is annulus, and annulus is surrounded by the connecting rod to external radiation, and end of the connecting rod far from annulus is solid
It is scheduled on positioning sleeve inner wall.
The suspender is selected for hanging the hook of object or forming the U-lag for hanging object with gas nozzle and platen.
When sucker to be removed, suspender is backed out, exposes the valve rod of check valve, it is outside to clamp valve rod with pliers
It draws, spool is made to leave valve platform, extraneous air will flow into platen inner hole supplement, and sucker resets, it will be able to easily will be true
Suction disk is removed from adsorbent surface.
The vacuum chuck further includes sealing ring 6, and sealing ring is made of flexible material, and sealing ring is annulus, sealing
Ring is pasted onto the sucker edge towards adsorbent surface.
The wall surface of the sealing ring back to sucker is equipped with the Shape-changeable ring of two outwardly protruding circles or more, adjacent Shape-changeable ring
Between there are gaps.
Shape-changeable ring is isosceles trapezoid, and end of the Shape-changeable ring far from sucker is terraced bottom.
The waist of Shape-changeable ring is made into camber.
Shape-changeable ring is zigzag fashion of the end to sucker outer incline.
Sucker is using silicon rubber or PVC material or polyurethane or the materials system such as nitrile rubber or the polymer containing vinyl
At.
Beneficial effect：
1, it is equipped with outwardly projecting gas nozzle on platen top, check valve and positioning sleeve are equipped in gas nozzle, platen is by sucker
It is pressed in adsorbent surface, then is taken away the air between platen and sucker by gas nozzle with air pump, makes shape between platen and sucker
At the first negative pressuren zone, to pull Direction distortion of the sucker to gas nozzle, the second negative pressure is formed between sucker and adsorbent surface
Area, so that sucker be made to suck in adsorbent surface, the first negative pressuren zone makes platen be pressed on sucker surrounding the suction of platen, thus
Sucker is set to be not likely to produce gas leakage.
Detailed description of the invention
Fig. 1 is appearance diagram of the invention；
Fig. 2 is the schematic diagram that pops of the invention；
Fig. 3 is the diagrammatic cross-section of the present invention in the initial state；
Fig. 4 is that the present invention is adsorbed on the diagrammatic cross-section after adsorbent surface；
Fig. 5 is the diagrammatic cross-section of platen；
Fig. 6 is the schematic perspective view of positioning sleeve；
Fig. 7 is the diagrammatic cross-section of suspender of the invention.
Specific embodiment
As shown in Fig. 1 to Fig. 7, a kind of air-breathing sucker mainly includes sucker 1, platen 2, and platen is pressed in sucker edge,
It is equipped with upward gas nozzle 21 on platen top, check valve 3 is equipped in gas nozzle, air pump is inhaled the air in platen by gas nozzle
Out, the first negative pressuren zone is generated between platen inner wall and sucker, makes Direction distortion of the middle part of sucker to platen, in sucker and is inhaled
The second negative pressuren zone is generated between addendum surface, so that sucker be made to suck in adsorbent surface.Due to platen inner wall and sucker it
Between generate the first negative pressuren zone, therefore a pulling force to sucker direction is generated on platen, to enable platen by sucker pressure
Tightly in adsorbent surface, prevent the edge of sucker under the pulling force that sucker resets to middle slip, so as to prevent from inhaling
Disk gas leakage.
The check valve includes spool and valve rod, and spool is bullet, and valve rod is located at the cone bottom center of spool；In gas nozzle
Hole is equipped with a circle valve platform, and the side that valve platform be open towards gas nozzle is taper, when the spool of check valve is by the negative pressure of the first negative pressuren zone
When inspiration valve platform, spool jams valve platform inner hole；The vacuum chuck further includes positioning sleeve 4, and positioning sleeve is equipped with external screw thread, fixed
Bracket is equipped in the set inner hole of position, the valve rod of check valve passes through the centre bore of positioning sleeve bracket, and positioning sleeve is screwed in gas nozzle inner wall
On internal screw thread, bracket blocks spool, makes spool between valve platform and positioning sleeve.The center of bracket is annulus, and annulus surrounding is set
The connecting rod of oriented external radiation, connecting rod are fixed on positioning sleeve inner wall far from the end of annulus.Effect that there are two positioning sleeves, one
It is that the spool of check valve is locked between valve platform and positioning sleeve, one is to play the role of positioning to valve rod, makes valve rod always
It is maintained in annulus, valve rod is avoided to generate biggish swing.
A upper spring 5 is covered on valve rod, makes spring between spool and bracket, under tension force of spring, spool quilt
It is lifted off bracket, spool is made to enter valve platform and blocking valve platform.Spring plays stable effect to the position of spool, prevents sucker from depositing
The valve rod of check valve does not stop to move generation sound along annulus during storage or transport.
The sucker is the plane for capableing of stretcher strain under the effect of external force.When with air pump connect the outside air-breathing of gas nozzle
When, the air between sucker and platen, which thins out, generates negative pressure, Direction distortion from sucker to gas nozzle, in sucker and adsorbate
The second negative pressuren zone is generated between surface, to keep the adsorption capacity of vacuum chuck stronger.
The vacuum chuck further includes suspender 7, and suspender is equipped with the connecting column being threadedly coupled with gas nozzle, suspender
It is screwed on gas nozzle by connecting column.The suspender is there are many form, such as the hook for hanging object, or with gas nozzle and pressure
Disk forms the U-lag for hanging object.
When needing that vacuum chuck is inhaled in adsorbent surface, sucker is pressed on adsorbent surface, then air pump
Suction nozzle is connected with the gas nozzle on platen top, and outside air-breathing when air pump works, spool is overcome tension force of spring to gas by suction
The suction nozzle direction of pump is mobile, so that spool be made to leave valve platform, gap is generated between spool and valve platform, and the air in platen is from valve
Gap between core and valve platform is sucked into the suction nozzle of air pump, and the air that air pump is taken away is more, and first between platen and sucker is negative
The negative pressure of pressure area is also bigger, and sucker will form the second negative pressuren zone to the Direction distortion of gas nozzle between sucker and adsorbate,
The air that air pump is taken away is more, and the deformation in sucker to gas nozzle direction is also bigger, and the space of the second negative pressuren zone is also bigger.By gas
After the suction nozzle of pump is extracted, spool is drawn into valve platform blocking valve platform by the first negative pressure space, so that gas leakage will not be generated.
When sucker to be removed, suspender is backed out, exposes the valve rod of check valve, it is outside to clamp valve rod with pliers
It draws, spool is made to leave valve platform, extraneous air will flow into platen inner hole supplement, and sucker resets, it will be able to easily will be true
Suction disk is removed from adsorbent surface.
The vacuum chuck further includes sealing ring 6, and sealing ring is made of flexible material, and sealing ring is annulus, sealing
Ring is pasted onto the sucker edge towards adsorbent surface.The material that sealing ring uses makes sealing ring for soft rubber or PP glue
Deformability is stronger, can fill and lead up the surface with lines or bump, avoid gas leakage, keep the application range of sucker more extensive.
Sucker wall surface in platen is equipped with multi-turn fold 11.When sucker deforms outward, fold has sucker
Stronger deformability.Since sucker of the invention is plane, fully relies on and form the dynamic sucker of negative pressure suction in platen to platen
Fold is arranged in Internal Hole Deformation on sucker, enhances the deformability of sucker.
It is multiple to the reinforcement outstanding of platen direction that mean array is gone back on sucker wall surface between fold and sucker center
Muscle 12.
The wall surface of the sealing ring back to sucker is equipped with the Shape-changeable ring of two outwardly protruding circles or more, adjacent Shape-changeable ring
Between there are gaps.
Shape-changeable ring is isosceles trapezoid, and end of the Shape-changeable ring far from sucker is terraced bottom.The waist of Shape-changeable ring can also be fabricated to
Arc.When sealing ring is pressed onto adsorbent surface by sucker, Shape-changeable ring can be deformed to the gap between Shape-changeable ring, so as to
The a degree of unevenness of adsorbent surface is adapted to, keeps the scope of application of sucker more extensive.
Shape-changeable ring is zigzag fashion of the end to sucker outer incline.
Sucker is using silicon rubber or PVC material or polyurethane or the materials system such as nitrile rubber or the polymer containing vinyl
At under the effect of external force, with the deformability stretched.
Above-described embodiment is intended merely to interpretation purposes of the invention, and is not limitation of the present invention, this technology
The those of ordinary skill in field makes a variety of changes or substitutes within the essential scope of the present invention, also should belong to guarantor of the invention
Protect scope.
Claims (10)
1. a kind of vacuum chuck, mainly includes sucker (1), platen (2), platen is pressed in sucker edge, sets on platen top
There are upward gas nozzle (21), it is characterised in that：Check valve (3) are equipped in gas nozzle, air pump passes through gas nozzle for the sky in platen
Aspiration goes out, and the first negative pressuren zone is generated between platen inner wall and sucker, makes Direction distortion of the middle part of sucker to platen, in sucker
The second negative pressuren zone is generated between adsorbent surface；The check valve includes spool and valve rod, and spool is bullet；In gas nozzle
Hole is equipped with a circle valve platform, and the side that valve platform be open towards gas nozzle is taper, when the spool of check valve is by the negative pressure of the first negative pressuren zone
When inspiration valve platform, spool jams valve platform inner hole；The vacuum chuck further includes positioning sleeve (4), and positioning sleeve is equipped with external screw thread,
Bracket is equipped in positioning sleeve inner hole, the valve rod of check valve passes through the centre bore of positioning sleeve bracket, and positioning sleeve is screwed in gas nozzle inner wall
Internal screw thread on, bracket blocks spool, makes spool between valve platform and positioning sleeve；A upper spring (5) is covered on valve rod, is made
Spring is between spool and bracket, and under tension force of spring, spool is lifted off bracket, and spool is made to enter valve platform and blocking valve
Platform；The vacuum chuck further includes suspender (7), and suspender is equipped with the connecting column being threadedly coupled with gas nozzle, and suspender is logical
Connecting column is crossed to be screwed on gas nozzle；When needing that vacuum chuck is inhaled in adsorbent surface, sucker is pressed on adsorbent surface,
Then the suction nozzle of air pump is connected with the gas nozzle on platen top, outside air-breathing when air pump works, spool is overcome bullet by suction
The tension of spring is mobile to the suction nozzle direction of air pump, so that spool be made to leave valve platform, gap, platen are generated between spool and valve platform
Gap of the interior air between spool and valve platform is sucked into the suction nozzle of air pump, and the air that air pump is taken away is more, platen and sucker
Between the first negative pressuren zone negative pressure it is also bigger, sucker will be to the Direction distortion of gas nozzle, the shape between sucker and adsorbate
At the second negative pressuren zone, the air that air pump is taken away is more, and the deformation in sucker to gas nozzle direction is also bigger, the space of the second negative pressuren zone
Also bigger；After the suction nozzle of air pump is extracted, spool is drawn into valve platform blocking valve platform by the first negative pressure space, thus not
Gas leakage can be generated.
2. vacuum chuck according to claim 1, it is characterised in that：The center of bracket be annulus, annulus be surrounded by
The connecting rod of external radiation, connecting rod are fixed on positioning sleeve inner wall far from the end of annulus.
3. vacuum chuck according to claim 1, it is characterised in that：The suspender select hook for hanging object or
The U-lag for hanging object is formed with gas nozzle and platen.
4. vacuum chuck according to claim 1, it is characterised in that：When sucker to be removed, suspender is backed out, is made unidirectional
The valve rod of valve exposes, and clamps valve rod with pliers and is pulled outwardly, so that spool is left valve platform, extraneous air will flow into platen
Hole supplement, sucker reset, it will be able to easily remove vacuum chuck from adsorbent surface.
5. vacuum chuck according to claim 1, it is characterised in that：The vacuum chuck further includes sealing ring (6), close
Seal ring is made of flexible material, and sealing ring is annulus, and sealing ring is pasted onto the sucker edge towards adsorbent surface.
6. vacuum chuck according to claim 5, it is characterised in that：The sealing ring back to sucker wall surface be equipped with to
Shape-changeable rings more than two circles of outer protrusion, there are gaps between adjacent Shape-changeable ring.
7. vacuum chuck according to claim 6, it is characterised in that：Shape-changeable ring is isosceles trapezoid, and Shape-changeable ring is far from sucker
End be terraced bottom.
8. vacuum chuck according to claim 6, it is characterised in that：The waist of Shape-changeable ring is made into camber.
9. vacuum chuck according to claim 6, it is characterised in that：Shape-changeable ring is zigzag of the end to sucker outer incline
Shape.
10. vacuum chuck according to claim 1, it is characterised in that：Sucker is using silicon rubber or PVC material or polyurethane
Or the materials such as nitrile rubber or the polymer containing vinyl are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583975.XA CN108843678B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121731.7A CN106499718B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
| CN201810583975.XA CN108843678B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611121731.7A Division CN106499718B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108843678A true CN108843678A (en) | 2018-11-20 |
| CN108843678B CN108843678B (en) | 2020-05-05 |
Family
ID=58329884
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611121731.7A Active CN106499718B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
| CN201810583975.XA Active CN108843678B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611121731.7A Active CN106499718B (en) | 2016-12-08 | 2016-12-08 | Vacuum chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106499718B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109377704A (en) * | 2018-12-08 | 2019-02-22 | 湖南明盛高新科技有限公司 | A kind of dedicated energy-saving electrical fire-detector of electrical equipment |
| CN111037487A (en) * | 2019-12-09 | 2020-04-21 | 中国工程物理研究院化工材料研究所 | Clamping accidental failure prevention structure of vacuum chuck for workpiece clamping |
| TWI738500B (en) * | 2020-09-09 | 2021-09-01 | 智高實業股份有限公司 | Valve sucker |
| CN115072120A (en) * | 2022-06-22 | 2022-09-20 | 河北白沙烟草有限责任公司保定卷烟厂 | Reusable label paper adsorption system air release stop block |
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| CN107701871B (en) * | 2017-10-25 | 2023-09-01 | 深圳市智高翔科技发展有限公司 | Adsorption type supporting device with one-way valve |
| WO2019205154A1 (en) * | 2018-04-28 | 2019-10-31 | 深圳蓝胖子机器人有限公司 | Composite suction cup, composite suction cup assembly, and mechanical arm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109377704A (en) * | 2018-12-08 | 2019-02-22 | 湖南明盛高新科技有限公司 | A kind of dedicated energy-saving electrical fire-detector of electrical equipment |
| CN111037487A (en) * | 2019-12-09 | 2020-04-21 | 中国工程物理研究院化工材料研究所 | Clamping accidental failure prevention structure of vacuum chuck for workpiece clamping |
| TWI738500B (en) * | 2020-09-09 | 2021-09-01 | 智高實業股份有限公司 | Valve sucker |
| CN115072120A (en) * | 2022-06-22 | 2022-09-20 | 河北白沙烟草有限责任公司保定卷烟厂 | Reusable label paper adsorption system air release stop block |
| CN115072120B (en) * | 2022-06-22 | 2024-02-27 | 河北白沙烟草有限责任公司保定卷烟厂 | Reusable label paper adsorption system air release stop block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499718A (en) | 2017-03-15 |
| CN106499718B (en) | 2018-08-17 |
| CN108843678B (en) | 2020-05-05 |
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