CN104493819B - One stacks parts and captures mask work platform - Google Patents
One stacks parts and captures mask work platform Download PDFInfo
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- CN104493819B CN104493819B CN201410712660.2A CN201410712660A CN104493819B CN 104493819 B CN104493819 B CN 104493819B CN 201410712660 A CN201410712660 A CN 201410712660A CN 104493819 B CN104493819 B CN 104493819B
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- fixture block
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- voussoir
- workbench
- triangle fixture
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Abstract
The present invention relates to one and stack parts crawl mask work platform, including carrying workbench, capture cantilever and rotate column, it is provided with central branches fagging in the middle part of carrying workbench, carrying is provided with one number service hole on the left of workbench upper surface, carrying is provided with base plate on the right side of workbench upper surface, a motor it is provided with on the left of central branches fagging, a number motor drives rotation column to rotate by gear-driven mode, rotate column and be provided with upright post sleeve block, it is cased with bearing on upright post sleeve block, the outer ring of bearing is stuck in one number service hole, rotate and be provided with a groove and No. two grooves side by side on the right flank of column, the medial surface of a number groove is provided with tooth bar, it is provided with leading screw in No. two grooves, the upper end of leading screw connects No. two motors.The present invention, with carrying workbench for supporting, uses can rotate and lift on carrying workbench to capture the cantilever parts to stacking and carry out capturing and separate, reduces the labor intensity of staff, it is to avoid staff when separating sharp or heavy parts by industrial injury.
Description
Technical field
The present invention relates to parts separation lifting means technical field, specifically one stack parts and grab
Take mask work platform.
Background technology
The disk-like accessory that enterprise produces, especially disk cover class stamping parts is when depositing or transport, in order to save sky
Between, the methods that disk cover stacking is placed that use, but the Plate-shaped parts that stacking is placed more, such as flange, by
In heavier mass, the mode labor intensity using a dead lift to separate is big, and separation efficiency is low, to the personnel of moving
There is certain potential safety hazard, if China Patent No. is ZL201520399747.9, a kind of ring flange of proposition
Rack, by being provided with the first different isolating bar of multiple interval and the second isolating bar, it is achieved that can place
The ring flange of different-diameter, but the mode labor intensity that this patent uses a dead lift to separate is big, separates effect
Rate is low, has certain potential safety hazard to the personnel of moving;Particularly with face-flange, be stacked together is flat
Face flange is the most very close to each other, is difficult to separate by hand, parts of taking for the convenience of the users, needs
Parts it is placed in suitable altitude range, prior art to use after manually parts being separated single
Solely being placed on the special frame of suitably height, labor intensity is big, is unfavorable for the personal safety of labourer equally.
Plate parts for punching press is same, if Chinese Patent Application No. is ZL201410596209.9
The rack of a kind of back door reinforcing plate, secures multilamellar fixed mount on support body, and the design of this structure can be put
Put more back door reinforcing plate, save space, owing to the Plate-shaped parts thickness of punching press is less, layer and layer it
Between gap very little, use the manual mode difficulty separated relatively big, be unfavorable for improving production efficiency, and
The edge that stamping parts is sharp easily scratches bearer.
For replacing manually disk-like accessory or flange being carried, improve work efficiency, save labour force, protect
Protecting the safety of staff, people need a kind of equipment that can be quick and precisely separated by the parts that stack
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides one to stack parts and captures mask work platform.
The present invention solves its technical problem and realizes by the following technical solutions:
One stacks parts and captures mask work platform, including for placing the carrying workbench of parts, use
In capturing capturing cantilever and capturing cantilever and the rotation column of parts, described rotation for rotating of parts
Column is positioned at the left side of carrying workbench, and one end of described crawl cantilever is enclosed within rotation column.
Being provided with central branches fagging in the middle part of described carrying workbench, carrying is provided with one number service on the left of workbench upper surface
Hole, is provided with for placing and the base plate of securing part on the right side of carrying workbench upper surface, is put by parts
Putting in the position specified, the convenient cantilever that captures accurately captures parts, is provided with on the left of described central branches fagging
A number motor, a described motor drives rotation column to rotate by gear-driven mode, and described rotation is stood
Post is provided with upright post sleeve block, and described upright post sleeve block is cased with bearing, and the outer ring of described bearing is stuck in one number service hole
In, the upright post sleeve block that lateral surface is cased with bearing changes the contact form rotating column with carrying workbench,
While utilizing bearing for rotating column offer support, reduce between rotation column and carrying workbench
Frictional force, the right flank of described rotation column is provided with a groove and No. two grooves side by side, a described groove interior
Side is provided with tooth bar, and a groove is T-slot, and the right-hand member of a groove is provided with rib, is provided with in a described groove
Self-propelled sensor elevator, described self-propelled sensor elevator rises voluntarily along tooth bar, and at rib
All the time being stuck under restriction in a groove, described No. two grooves are rectangular channel, are provided with leading screw, described silk in No. two grooves
The upper end of thick stick connects has No. two motors, described No. two motors to be fixed on rotation column upper end, and described leading screw overlaps
There are the screw set of rectangle, described No. two driven by motor screw turns, and then can not be with silk in No. two grooves will be stuck in
The screw set of the rectangle that thick stick rotates promotes along No. two grooves or falls, and is bolted on the right side of described screw set
Mode is fixed on crawl cantilever.
Described crawl cantilever includes being enclosed within rotation column, and the mode being bolted is fixed with screw set
Rectangle enhancing ring, described rectangle enhancing ring right-hand member is fixed with cantilever arm, and the right-hand member of described cantilever arm is fixed with
Cylinder, cantilever arm right-hand member bottom is fixed with Zhou Kapan, described Zhou Kapan and includes upper cover and lower cover, described upper cover
Middle part is provided with No. two through holes, and the axle of described cylinder gos deep into inside Zhou Kapan by No. two through holes, under the axle of cylinder
End be provided with the conical surface, be provided with between described upper cover and lower cover four pieces of axles being positioned at cylinder the most corresponding forward and backward,
The voussoir of left and right side, the inclined-plane of described voussoir all and cone match, under the promotion of the axle of cylinder, voussoir
Being moved away the most laterally, the outer end of described voussoir is respectively and fixedly provided with push rod, fixing between described upper cover and lower cover
Being provided with back-up ring, the side, front, rear, left and right of described back-up ring is equipped with No. three through holes, described push rod correspondence respectively
Connect through No. three through holes and have triangle fixture block, push rod is all cased with the spring being stuck between voussoir and back-up ring, bullet
During spring pressurized, promotion voussoir is inwardly concentrated by spring, thus plays the effect resetting voussoir, described triangle
The height of fixture block is less than the spacing of upper cover with lower cover edge, in order to when voussoir is inwardly concentrated, triangle fixture block
Can take between upper cover and lower cover.
Described self-propelled sensor elevator includes body frame;Described body frame is rectangle frame, before body frame
Being respectively provided with a limited roller on rear two sides, body frame bottom is provided with sensor, and described body frame top is provided with
The turbine voluntarily engaged with tooth bar through body frame left surface, is provided with No. three motors in the middle part of body frame, and described three
The axle of number motor is provided with the worm screw coordinated with turbine voluntarily, and described worm screw drives turbine rotation voluntarily, and makes
Turbine rises or falls along tooth bar voluntarily, so that sensor rises or falls.
Described triangle fixture block is right angled triangle fixture block, and the inclined-plane of triangle fixture block is downward, oblique when triangle fixture block
When face is pressed on flange hole inward flange, inclined-plane is by upwarding pressure and interior thrust, and inside thrust is by three
Angle fixture block pushes in upper cover and lower cover, spring-compressed simultaneously, so that upper cover and lower cover are stuck in flange hole.
The axle lower end of described cylinder is cased with the conehead that the less politef of coefficient of friction is made, described voussoir
Also being made up of politef, when conehead promotes voussoir, between voussoir and conehead, frictional force is less, conehead
The power on voussoir that acts on promotes push rod to move the most backward, it is to avoid conehead is stuck by voussoir, described voussoir
Inclined-plane is more than 45 °, to reduce on the vertical direction that conehead produces on the inclined-plane of voussoir with the angle of horizontal plane
Power, increase voussoir thrust in the horizontal plane.
Described triangle fixture block is made of metal, the quenched process in outer end of triangle fixture block, to improve frequently with zero
The wearability of the triangle fixture block of parts friction, the outer end of triangle fixture block is provided with cambered surface, to adapt to elevated zero
The inner wall shape of parts endoporus.
The invention has the beneficial effects as follows: the present invention is with carrying workbench for supporting, and employing can be at carrying workbench
The cantilever parts to stacking that capture of upper rotation and lifting carry out capturing separation, reduce the labor of staff
Fatigue resistance, it is to avoid staff when separating sharp or heavy parts by industrial injury.
Described self-propelled sensor elevator can be from Row sum-equal matrix place height in a groove, in order to when needing pair
The amount of parts stacked is added up, and uses the forms of motion of turbine and worm to make sensor lift on tooth bar,
Take up room little, stable movement, there is self-locking property.
Under the control of cylinder, described triangle fixture block freely can stretch in Zhou Kapan, thus realizes first by week
Chuck stretches in parts hole, then stretches out triangle fixture block, is stuck on Zhou Kapan by parts, thus firm shifting
The purpose of dynamic parts.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure schematic diagram of the present invention;
Fig. 2 is the front view of the present invention;
Fig. 3 is the Fig. 2 sectional drawing along line A-A;
Fig. 4 is the enlarged drawing of I in Fig. 2;
Fig. 5 is the left view of the present invention;
Fig. 6 is the top view of the present invention;
Fig. 7 is the three-dimensional view rotating column of the present invention;
Fig. 8 is the left rear side three-dimensional view of the self-propelled sensor elevator of the present invention;
Fig. 9 is the forward right side three-dimensional view of the self-propelled sensor elevator of the present invention;
Figure 10 is the internal structure schematic diagram of the self-propelled sensor elevator of the present invention
Figure 11 is upper cover and voussoir, push rod, triangle fixture block and the annexation schematic diagram of spring of the present invention;
Figure 12 is the upper left side three-dimensional view of the upper cover of the present invention;
Figure 13 is the cylinder annexation schematic diagram with conehead of the present invention.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect,
Below in conjunction with being specifically illustrating, the present invention is expanded on further.
As shown in figure 1 to figure 13, one stacks parts and captures mask work platform, including for placing parts
Carrying workbench 1, for capturing capturing cantilever 2 and capturing cantilever 2 and parts for rotating of parts
Rotating column 3, described rotation column 3 is positioned at the left side of carrying workbench 1, one end set of described crawl cantilever 2
Rotating on column 3.
Being provided with central branches fagging 9 in the middle part of described carrying workbench 1, carrying is provided with No. one on the left of workbench 1 upper surface
Through hole 10, is provided with on the right side of carrying workbench 1 upper surface for placing and the base plate 11 of securing part, base
Parts are positioned by plate 11, and parts are placed on the position specified, and the convenient cantilever 2 that captures accurately is grabbed
Taking parts, be provided with a motor 12 on the left of described central branches fagging 9, a described motor 12 is passed by gear
Dynamic mode drives rotation column 3 to rotate, and described rotation column 3 is provided with upright post sleeve block 10, described upright post sleeve
Being cased with bearing 13 on block 10, the outer ring of described bearing 13 is stuck in one number service hole 10, lateral surface is cased with bearing
The upright post sleeve block 10 of 13 changes the contact form rotating column 3 with carrying workbench 1, utilizing bearing 13 is
While column 3 offer support is provided, reduce the frictional force rotated between column 3 and carrying workbench 1, institute
State to rotate and be provided with a groove 15 and No. two grooves 16, the medial surface of a described groove 15 side by side on the right flank of column 3
Being provided with tooth bar 17, the right-hand member of a groove 15 is provided with rib 18, is provided with self-propelled sensing in a described groove 15
Device elevator 19, described self-propelled sensor elevator 19 rises voluntarily along tooth bar 17, and in the limit of rib 18
All the time being stuck under system in a groove 15, be provided with leading screw 20 in described No. two grooves 16, the upper end of described leading screw 20 is even
Being connected to No. two motors 21, described No. two motors 21 are fixed on rotation column 3 upper end, and described leading screw 20 is cased with square
The screw set 22 of shape, described No. two motors 21 drive leading screw 20 to rotate, and then can not in being stuck in No. two grooves 16
Promote with the screw set 22 of the rectangle of leading screw 20 rotation along No. two grooves 16 or fall, logical on the right side of described screw set 22
Cross bolted mode to be fixed on crawl cantilever 2.
Described crawl cantilever 2 includes being enclosed within rotation column 3, and the mode being bolted and screw set 22
Fixing rectangle enhancing ring 23, described rectangle enhancing ring 23 right-hand member is fixed with cantilever arm 24, described cantilever arm 24
Right-hand member be fixed with cylinder 25, cantilever arm 24 right-hand member bottom is fixed with Zhou Kapan 26, described Zhou Kapan 26 and includes
Upper cover 27 and lower cover 28, be provided with No. two through holes 29 in the middle part of described upper cover 27, the axle of described cylinder 25 passes through No. two
It is internal that through hole 29 gos deep into Zhou Kapan 26, and the axle lower end of cylinder 25 is provided with the conical surface 30, described upper cover 27 and lower cover 28
Between be provided with the voussoir 31 of four pieces of sides, front, rear, left and right of the corresponding axle being positioned at cylinder 25 respectively, described wedge
The inclined-plane of block 31 all coordinates with the conical surface 30, and under the promotion of the axle of cylinder 25, voussoir 31 the most separately moves
Dynamic, the outer end of described voussoir 31 is respectively and fixedly provided with push rod 32, is fixed with gear between described upper cover 27 and lower cover 28
Circle 33, the side, front, rear, left and right of described back-up ring 33 is equipped with No. three through holes 34, and described push rod 32 is the most right
Should connect through No. three through holes 34 and have triangle fixture block 35, push rod 32 is all cased be stuck in voussoir 31 and back-up ring 33 it
Between spring 36, during spring 36 pressurized, promotion voussoir 31 is inwardly concentrated by spring 36, thus plays voussoir
31 effects resetted, the height of described triangle fixture block 35 is less than the spacing of upper cover 27 and lower cover 28 edge, with
Just, when voussoir 31 is inwardly concentrated, triangle fixture block 35 can be taken between upper cover 27 and lower cover 28.
Described self-propelled sensor elevator 19 includes body frame 37;Described body frame 37 is rectangle frame, main body
Being respectively provided with a limited roller 8 before and after frame 37 on two sides, body frame 37 bottom is provided with sensor 6, described master
Body frame 37 top is provided through turbine 7 voluntarily that body frame 37 left surface engages with tooth bar 17, in the middle part of body frame 37
It is provided with No. three motors 5, the worm screw 4 that the axle of described No. three motors 5 is provided with turbine 7 coordinates voluntarily, described snail
Bar 4 drives turbine 7 voluntarily to rotate, and makes turbine 7 voluntarily rise or fall along tooth bar 17, so that sensor 6
Rise or fall.
Described triangle fixture block 35 is right angled triangle fixture block, and the inclined-plane of triangle fixture block 35 is downward, when triangle card
When the inclined-plane of block 35 is pressed on flange hole inward flange, inclined-plane is by upwarding pressure and interior thrust, inside
Triangle fixture block 35 is pushed in upper cover 27 and lower cover 28 by thrust, and spring 36 compresses simultaneously, so that upper cover
27 and lower cover 28 be stuck in flange hole.
The axle lower end of described cylinder 25 is cased with the conehead 37 that the less politef of coefficient of friction is made, described
Voussoir 31 is also made up of politef, when conehead 37 promotes voussoir 31, rubs between voussoir 31 and conehead 37
Wiping power is less, and conehead 37 acts on the power on voussoir 31, promotes push rod 32 to move the most backward, it is to avoid conehead
37 by stuck for voussoir 31, and the inclined-plane of described voussoir 31 and the angle of horizontal plane are more than 45 °, to reduce conehead 37
The power on vertical direction produced on the inclined-plane of voussoir 31, increases voussoir 31 thrust in the horizontal plane.
Described triangle fixture block 35 is made of metal, the quenched process in outer end of triangle fixture block 35, to improve frequently
With the wearability of the triangle fixture block 35 of parts friction, the outer end of triangle fixture block 35 is provided with cambered surface 38, to adapt to
The inner wall shape of elevated parts endoporus.
It is embodied as step as follows: for each separates by the parts of stacking placement, in order to bottom operation personnel
Quickly taking use, first the parts of stacking should be placed on base plate by staff, open No. three motors
And sensor, described sensor rise to from the bottom of a groove and stack under the drive of No. three motors zero
The height that component top is concordant, in the process, the related control device being connected with sensor is combined sensor
Detected value and related control device in distance parameter between adjacent two parts preset calculate and stack
Parts total quantity, in order to equipment parts crawled complete after can stop in time, described No. three motors lead to
Crossing worm screw drives turbine rotation voluntarily, described limited roller to press against on rib, provides for turbine voluntarily and supports,
Whirlpool wheel and rack voluntarily is prevented to be disengaged from.
Afterwards under the drive of switch board, No. two driven by motor screw turns, make crawl cantilever move down,
Simultaneously cylinder 25 axially retract into, voussoir 31 unloads, and under the action of the spring in the mobile set of middle part,
Push rod 32 drives triangle fixture block 35 to take in Zhou Kapan, in order to Zhou Kapan gos deep in the punching hole of parts,
The axle of exhaust hood 25 stretch out, the taper seat of the axle bottom of cylinder 25 promotes voussoir 31 and push rod 32 successively
Triangle fixture block 35 is released, is stuck on the punching hole inwall of parts.Then utilize leading screw to drive and capture cantilever
Move up with parts.
Then start a motor, utilize driven by motor to rotate column and rotate, cantilever and zero will be captured
Part goes to side in horizontal plane, to facilitate the staff of next operation to take.
Finally capturing cantilever to reset, carrying out grasping movement next time, until having been captured by parts.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The industry
Skilled person will appreciate that, the present invention is not restricted to the described embodiments, in above-described embodiment and description
The principle that the present invention is simply described described, without departing from the spirit and scope of the present invention, the present invention
Also having various changes and modifications, these changes and improvements both fall within scope of the claimed invention.This
The claimed scope of invention is defined by appending claims and equivalent thereof.
Claims (5)
1. stack parts and capture a mask work platform, including carrying workbench, capture cantilever and rotate vertical
Post, it is characterised in that: being provided with central branches fagging in the middle part of described carrying workbench, carrying workbench upper surface is left
Side is provided with one number service hole, and carrying is provided with base plate on the right side of workbench upper surface, sets on the left of described central branches fagging
Having a motor, a described motor drives rotation column to rotate by gear-driven mode, described rotation
Column is provided with upright post sleeve block, and described upright post sleeve block is cased with bearing, and the outer ring of described bearing is stuck in one number service
In hole, the right flank of described rotation column is provided with a groove and No. two grooves, the inner side of a described groove side by side
Face is provided with tooth bar, and a groove is T-slot, and the right-hand member of a groove is provided with rib, is provided with certainly in a described groove
Line sensor elevator, described No. two grooves are rectangular channel, are provided with leading screw in No. two grooves, described leading screw upper
End connection has No. two motors, described No. two motors to be fixed on rotation column upper end, and described leading screw is cased with rectangle
Screw set, the mode being bolted on the right side of described screw set be fixed on crawl cantilever on;
Described crawl cantilever includes that rectangle enhancing ring, described rectangle enhancing ring are enclosed within rotation column, and rectangle carries
The mode that liter ring is bolted is fixed with screw set, and rectangle enhancing ring right-hand member is fixed with cantilever arm, described
The right-hand member of cantilever arm is fixed with cylinder, and cantilever arm right-hand member bottom is fixed with Zhou Kapan, described Zhou Kapan and includes
Lid and lower cover, be provided with No. two through holes in the middle part of described upper cover, the axle of described cylinder is by No. two through holes deeply week card
Inside dish, the axle lower end of cylinder is provided with the conical surface, is provided with four pieces and the most corresponding is positioned between described upper cover and lower cover
The voussoir of the side, front, rear, left and right of the axle of cylinder, the inclined-plane of described voussoir is all and cone match, described wedge
The outer end of block is respectively and fixedly provided with push rod, is provided with back-up ring between described upper cover and lower cover, described back-up ring forward and backward,
Left and right side is equipped with No. three through holes, and there is triangle fixture block described push rod corresponding connection through No. three through holes respectively,
All be cased with the spring being stuck between voussoir and back-up ring on push rod, the height of described triangle fixture block less than upper cover with under
The spacing of lid.
One the most according to claim 1 stacks parts and captures mask work platform, it is characterised in that:
Described self-propelled sensor elevator includes body frame;Described body frame is rectangle frame, before and after body frame two
Being respectively provided with a limited roller on side, body frame bottom is provided with sensor, and described body frame top is provided through
The turbine voluntarily that body frame left surface engages with tooth bar, is provided with No. three motors, described No. three electricity in the middle part of body frame
The axle of machine is provided with the worm screw coordinated with turbine voluntarily.
One the most according to claim 1 stacks parts and captures mask work platform, it is characterised in that:
Described triangle fixture block is right angled triangle fixture block, and the inclined-plane of triangle fixture block is downward.
One the most according to claim 1 stacks parts and captures mask work platform, it is characterised in that:
The axle lower end of described cylinder is cased with the conehead that politef is made, and described voussoir is also made up of politef,
The inclined-plane of voussoir and the angle of horizontal plane are more than 45 °.
One the most according to claim 3 stacks parts and captures mask work platform, it is characterised in that:
Described triangle fixture block is made of metal, and the quenched process in outer end of triangle fixture block, the outer end of triangle fixture block is provided with
Cambered surface.
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CN201410712660.2A CN104493819B (en) | 2014-11-29 | 2014-11-29 | One stacks parts and captures mask work platform |
Applications Claiming Priority (1)
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CN201410712660.2A CN104493819B (en) | 2014-11-29 | 2014-11-29 | One stacks parts and captures mask work platform |
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CN104493819A CN104493819A (en) | 2015-04-08 |
CN104493819B true CN104493819B (en) | 2017-01-04 |
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Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105729442A (en) * | 2016-01-27 | 2016-07-06 | 太仓荣中机电科技有限公司 | Degree-of-freedom mechanical arm |
CN105775736A (en) * | 2016-03-24 | 2016-07-20 | 航天科技控股集团股份有限公司 | Vehicle instrument back cover plate material supply device |
TWI668591B (en) | 2018-06-28 | 2019-08-11 | 廣達電腦股份有限公司 | Robotic system |
CN108621141B (en) * | 2018-07-04 | 2024-04-09 | 苏州明俊设备制造有限公司 | Gantry type multi-station mechanical arm operation control mechanism |
CN109230516A (en) * | 2018-09-29 | 2019-01-18 | 芜湖中义玻璃有限公司 | A kind of clamping device of vial processing |
CN109909785B (en) * | 2019-04-08 | 2020-09-04 | 北京发那科机电有限公司 | Supporting assembly, supporting system, disc workpiece overturning system and overturning method |
CN110919444B (en) * | 2019-12-17 | 2021-04-30 | 南通鑫拓封头制造有限公司 | Automatic feeding and discharging device for machining disc-shaped parts |
CN111152202B (en) * | 2020-01-09 | 2020-10-30 | 江苏民慧供应链科技股份有限公司 | Combined robot arm operation production facility |
CN112454226B (en) * | 2020-11-20 | 2022-03-01 | 北京中科宇航技术有限公司 | General type adjustable positioning device of assembly fixture |
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AT640U1 (en) * | 1993-10-22 | 1996-02-26 | Sez Semiconduct Equip Zubehoer | GRIPPERS FOR SEMICONDUCTOR WAFERS AND OTHER DISC-SHAPED ITEMS |
ES2252220T3 (en) * | 2000-03-15 | 2006-05-16 | SCHUNK GMBH & CO. KG FABRIK FUR SPANN- UND GREIFWERKZEUGE | PARALLEL CLAMPS. |
DE10120939B4 (en) * | 2001-04-20 | 2004-09-02 | Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge | gripping device |
ATE520503T1 (en) * | 2007-12-04 | 2011-09-15 | Schunk Gmbh & Co Kg | GRIPPING DEVICE FOR DISK-SHAPED OBJECTS |
CN202429744U (en) * | 2012-01-11 | 2012-09-12 | 罗嘉航 | Plate conveying device |
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