CN107127384A - A kind of hydraulic pendulum plate shears - Google Patents
A kind of hydraulic pendulum plate shears Download PDFInfo
- Publication number
- CN107127384A CN107127384A CN201710310297.5A CN201710310297A CN107127384A CN 107127384 A CN107127384 A CN 107127384A CN 201710310297 A CN201710310297 A CN 201710310297A CN 107127384 A CN107127384 A CN 107127384A
- Authority
- CN
- China
- Prior art keywords
- shear
- material conveying
- screw rod
- conveying platform
- casing
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/06—Sheet shears
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
- Shearing Machines (AREA)
Abstract
The present invention provides a kind of hydraulic pendulum plate shears, the material conveying platform being sequentially provided with including including, shear and material receiving, lowering or hoisting gear is provided with material conveying platform, waste material device is provided with below shear, described material conveying platform includes motor, left and right screw rod and push rod, mobile platform, described lowering or hoisting gear includes installing plate, the both sides of the installing plate are provided with guide pillar, described shear includes shell, upper slitter, lower knife and table base, described waste material device includes the casing being located in table base, board-type lid is provided with the upper end open of the casing, the board-type lid is located at upper slitter, the underface in region between lower knife, the front end of the casing is provided with protuberance.The beneficial effects of the invention are as follows the lowering or hoisting gear of setting, the height of regulation material conveying platform and shear；The protective cover of setting, prevents shearing flying chip from dropping to elsewhere；Material conveying platform can automatic charging and the practicality for improving ash can.
Description
Technical field
The invention belongs to sheet shearing equipment technical field, more particularly, to a kind of hydraulic pendulum plate shears.
Background technology
Produce warmhouse booth skeleton, gutter when, it is necessary to be sheared to raw sheet material according to the size of setting, it is necessary to be used
Hydraulic pendulum plate shears, it is mainly carry out circular motion, but the manufacturing process of circular arc blade is extremely difficult.Hydraulic pendulum
The drawbacks of although plate shearing machine has certain, but it also has following advantageous feature：(1) hydraulic drive, pendulum-type knife rest, frame are overall
Welding is sturdy and durable, steadily rapid using the backhaul of accumulator oil cylinder；(2) there is the function of stepless regulation stroke, upper slitter there are two
Sword, lower knife has four swords, and blade cutting edge gap value is adjusted with handle up and down, and the gap blade uniformity is easily adjusted；(3) guard boom
Column ensures safe operation with electric interlock；(4) Machine tool pressure plate uses independent hydraulically controlled formula pressing element, and there are plastics the end of each pressing element
Feet；(5) driven type on hydraulic pressure, it is steady reliable.
Existing hydraulic pendulum plate shears has the following disadvantages：In operation, it is impossible to which convenient regulation material conveying platform is with cutting
The height of cutting apparatus, is not suitable for the sheet shearing of multi-thickness；Flying chip is sheared on the one hand to cause operator because splashing
Injury, on the other hand can drop on the ground, influence working environment；It is general by manually carrying out on material conveying platform, and due to cutting
There is security threat when sheet material is pushed under shear knife in danger close when cutting through journey, operating personnel；Plate after cutting is removed
, it is necessary to be collected into ash can during shearing flying chip on material, existing ash can has that memory space is small, be difficult to carry etc.
Phenomenon.
The content of the invention
It is an object of the invention to provide a kind of hydraulic pendulum plate shears, it adjusts the height of material conveying platform and shear,
Prevent shearing flying chip drop to elsewhere, can automatic charging and improve ash can practicality, be especially suitable for produce day
In ditch water falling groove.
The technical scheme is that：A kind of hydraulic pendulum plate shears, including material conveying platform, the shear being sequentially provided with
And material receiving, lowering or hoisting gear is provided with material conveying platform, waste material device is provided with below shear；
Described material conveying platform includes motor, left and right screw rod and push rod, mobile platform, and described motor is located at motor room
Interior, mobile platform is located on warehouse, described warehouse upper end open, on a mobile platform provided with two moving hole, in moving hole
Interior to be provided with left and right screw rod, one end of described left and right screw rod is located in warehouse by the first threaded block, and the left and right screw rod other end leads to
Cross shaft coupling with the output shaft of motor to be connected, be arranged with described left and right screw rod in nut sleeve, described nut sleeve and be provided with spiral shell
Mother, described nut sleeve outer upper end is vertically provided with push rod, and described push rod passes moving hole；
Described lowering or hoisting gear includes installing plate, and the both sides of the installing plate are provided with guide pillar, and the guide pillar has four, and
On a mounting board, the installing plate is provided with fixed mount for even distribution, and the upper end of the fixed mount is provided with thread bush, the thread bush
Screw rod above and below being inside provided with；
The upper end of the screw rod up and down is provided with lifter plate, and the lifter plate is provided with fore-set, and the fore-set has four, and
It is evenly distributed on lifter plate, the two ends of lifter plate are provided with pilot hole, and guide pillar is arranged in pilot hole, and limit is installed in the upper end of guide pillar
Position nut, and stop nut, on lifter plate, the upper end of four fore-sets is connected with workbench, and described material conveying platform is located at work
Make on platform；
Described shear includes shell, upper slitter, lower knife and table base, and the upper slitter is fixed on the one of knife rest
End, the other end of the knife rest is movably connected on the piston end of hydraulic cylinder, is movably connected in the middle part of the knife rest in frame,
The lower knife is fixed on the side of table base, and the upper slitter is whole knife, and the upper slitter passes through evenly distributed some spiral shells
Bolt group is fixed on knife rest, and each bolt group includes being located at the kingbolt at middle part and sets up the auxiliary spiral shell in kingbolt both sides separately
Bolt, described frame, table base are located in shell,；
Described waste material device includes being provided with straight panel at the casing being located in table base, the upper end open of the casing
Type lid, the board-type lid is provided with protuberance, bottom located at the underface in region between upper slitter, lower knife, the front end of the casing
End is provided with caving inward and being symmetrically formed two carrying fork truck grooves, and the middle part of the board-type lid is provided with rotating shaft, correspondingly institute
State casing and two turn troughs coordinated with rotating shaft are arranged with opening.
Further, described shear is externally provided with protective cover.
Further, described protective cover includes the cuboid-type cover body being sheathed on outside the shell of shear, positioned at shell
Rear end and bottom end are to be provided between supporting leg, the supporting leg to be located at cuboid-type at opening, the corner of the cuboid-type cover body
The lower section of the side plate of cover body is provided with cutting bits storage device, and the cutting bits storage device is by first baffle, second baffle
And positioned at two sideskids composition between the two, the lower ending opening of cutting bits storage device, the first baffle, second baffle
Upper end for trapezium structure wide at the top and narrow at the bottom, and first baffle is connected with the side plate of cuboid-type cover body, the height of second baffle
Less than the height of first baffle.
Further, described cutting bits storage device is set close to material receiving.
Further, described material receiving upper surface is provided with transport mechanism.
Further, described transport mechanism is conveyer belt, and the conveyer belt is driven by motor.
Further, the surface of board-type lid is located at the lower ending opening of cutting bits storage device.
Further, described hydraulic pendulum plate shears is in outer containment vessel.
The present invention has the advantages and positive effects of：Due to using above-mentioned technical proposal, the lowering or hoisting gear of setting, regulation
The height of material conveying platform and shear；The protective cover of setting, prevents shearing flying chip from dropping to elsewhere；Material conveying platform can be certainly
Dynamic feeding and the practicality for improving ash can.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of material conveying platform.
Fig. 3 is the structural representation of lowering or hoisting gear.
Fig. 4 is the structural representation of shear.
Fig. 5 is the structural representation of shear.
Fig. 6 is the structural representation of protective cover.
Fig. 7 is the structural representation of cutting bits storage device.
In figure：
1st, material conveying platform 2, shear 3, material receiving
4th, lowering or hoisting gear 5, outer containment vessel 6, protective cover
7th, motor 8, left and right screw rod 9, push rod
10th, mobile platform 11, warehouse 12, shaft coupling
13rd, nut sleeve 14, installing plate 15, guide pillar
16th, fixed mount 17, up and down thread bush 18, screw rod
19th, lifter plate 20, fore-set 21, workbench
22nd, upper slitter 23, lower knife 24, table base
25th, frame 26, casing 27, board-type lid
28th, groove 29, rotating shaft 30, turn trough are carried
31st, cuboid-type cover body 32, supporting leg 33, cutting bits storage device
34th, first baffle 35, second baffle 36, sideskid
Embodiment
As shown in figure 1, the technical scheme is that a kind of hydraulic pendulum plate shears, including the material conveying platform being sequentially provided with
1st, shear 2 and material receiving 3, are provided with lowering or hoisting gear 4 on material conveying platform 1, are filled below shear 2 provided with waste material
Put；
As shown in Fig. 2 described material conveying platform 1 includes motor 7, left and right screw rod 8 and push rod 9, mobile platform 10, it is described
Motor 7 is located in motor room, and mobile platform 10 is located on warehouse 11, the described upper end open of warehouse 11, on a mobile platform 10
Provided with two moving hole, left and right screw rod 8 is provided with moving hole, one end of described left and right screw rod 8 is set by the first threaded block
In warehouse 11, the other end of left and right screw rod 8 is connected by shaft coupling 12 with the output shaft of motor 7, is covered on described left and right screw rod 8
Provided with nut sleeve 13, nut is provided with described nut sleeve 13, the described outer upper end of nut sleeve 13 is vertically provided with push rod 9, institute
The push rod 9 stated passes moving hole, and sheet material to be cut is placed on to the front side of push rod 9, starts motor 7, can now push it to automatically
At the import of shear 2；
As shown in figure 3, described lowering or hoisting gear 4 includes installing plate 14, the both sides of the installing plate 14 are provided with guide pillar 15, institute
Stating guide pillar 15 has four, and is evenly distributed on installing plate 14, and the middle part of installing plate 14 is provided with handle hole, and handle hole is easy to operation
Personnel's rotation rises or falls workbench screw rod up and down, and the installing plate 14 is provided with fixed mount 16, the fixed mount 16
Upper end be provided with thread bush 17, be provided with the thread bush 17 above and below screw rod 18, guide pillar 15 and screw rod 18 contributes to reality up and down
The elevating function of existing workbench；
The upper end of the screw rod 18 up and down is provided with lifter plate 19, and the lifter plate 19 is provided with fore-set 20, the fore-set
20 have four, and are evenly distributed on lifter plate 19, and the two ends of lifter plate 19 are provided with pilot hole, and guide pillar 15 is arranged on pilot hole
In, stop nut is installed in the upper end of guide pillar 15, and stop nut is on lifter plate 19, the upper end of four fore-sets 20 and workbench
21 are connected, and described material conveying platform 1 is located on workbench 21, and lifter plate 19 is driven workbench by screw rod 18 above and below manual rotation
21 move up and down, and realize the height regulation of material conveying platform 1；
As shown in figure 4, described shear includes shell, upper slitter 22, lower knife 23 and table base 24, the upper slitter
22 are fixed on one end of knife rest, and the other end of the knife rest is movably connected on the piston end of hydraulic cylinder, the middle part of the knife rest
It is movably connected in frame 25, the lower knife 23 is fixed on the side of table base 24, the upper slitter 22 is whole knife, described
If upper slitter 22 is fixed on knife rest by evenly distributed bolt stem group, each bolt group includes the kingbolt located at middle part
With set up the auxiliary bolt in kingbolt both sides separately, described frame 25, table base 24 are located in shell；
As shown in figure 5, described waste material device includes being located at casing 26 in table base 24, the casing 26 it is upper
Board-type lid 27 is provided with end opening, the board-type lid 27 is described located at the underface in region between upper slitter 22, lower knife 23
The front end of casing 26 is provided with the space inside protuberance, increase casing 26, and bottom, which is provided with, caves inward and be symmetrically formed two forks
The carrying groove 28 of car, the middle part of the board-type lid 27 is provided with rotating shaft 29, and correspondingly the casing 26 is located at symmetrical at opening
Provided with two turn troughs 30 coordinated with rotating shaft 29.
In the present embodiment, described shear 2 is externally provided with protective cover 6.
In the present embodiment, as shown in Figure 6,7, described protective cover 6 is rectangular outside the shell of shear 2 including being sheathed on
Build cover body 31, the cuboid-type cover body 31 is made up of lucite, is opening, institute positioned at outer casing back and bottom end
The lower section for the side plate for being located at cuboid-type cover body between supporting leg 32, the supporting leg is provided with the corner for stating cuboid-type cover body 31
Storage device 33 is considered to be worth doing provided with cutting, and the cutting bits storage device 33 is by first baffle 34, second baffle 35 and positioned at two
Two sideskids 36 between person are constituted, the lower ending opening of cutting bits storage device 33, and the first baffle 34, second baffle 35 are
Trapezium structure wide at the top and narrow at the bottom, and the upper end of first baffle 34 is connected with the side plate of cuboid-type cover body 31, second baffle 35
Highly it is less than the height of first baffle 34.
In the present embodiment, described cutting bits storage device 33 is set close to material receiving.
In the present embodiment, the described upper surface of material receiving 3 is provided with transport mechanism.
In the present embodiment, described transport mechanism is conveyer belt, and the conveyer belt is driven by motor.
In the present embodiment, the surface of board-type lid 27 is located at the lower ending opening of cutting bits storage device 33.
In the present embodiment, described hydraulic pendulum plate shears is in outer containment vessel 5.
The course of work of this example：Sheet material to be sheared is placed on material conveying platform 1, and shear 2 is then pushed to automatically
Charging aperture at, then sheared, sheet material after shearing is reached on material receiving 3, finally transmitted at rewinding, started shearing and fly
The opening that bits can consider storage device 33 to be worth doing along cutting automatically drops into casing 26.
One embodiment of the present of invention is described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All equivalent changes made according to the present patent application scope and improvement
Deng within the patent covering scope that all should still belong to the present invention.
Claims (8)
1. a kind of hydraulic pendulum plate shears, it is characterised in that：Material conveying platform, shear and splicing including being sequentially provided with are put down
Platform, is provided with lowering or hoisting gear on material conveying platform, and waste material device is provided with below shear, and described material conveying platform includes electricity
Machine, left and right screw rod and push rod, mobile platform, described motor are located in motor room, and mobile platform is located on warehouse, described storehouse
Body upper end open, on a mobile platform provided with two moving hole, is provided with left and right screw rod in moving hole, described left and right screw rod
One end is located in warehouse by the first threaded block, and the left and right screw rod other end is connected by shaft coupling with the output shaft of motor, described
Left and right screw rod on be arranged with nut sleeve, nut is provided with described nut sleeve, described nut sleeve outer upper end is vertically provided with
Push rod, described push rod passes moving hole, and described lowering or hoisting gear includes installing plate, and the both sides of the installing plate are provided with guide pillar,
The guide pillar has four, and is uniformly distributed on a mounting board, and the installing plate is provided with fixed mount, and the upper end of the fixed mount is set
There is screw rod above and below being provided with thread bush, the thread bush, the upper end of the screw rod up and down is provided with lifter plate, the lifter plate
Fore-set is provided with, the fore-set there are four, and is evenly distributed on lifter plate, the two ends of lifter plate are provided with pilot hole, guide pillar peace
In pilot hole, stop nut is installed in the upper end of guide pillar, and stop nut is on lifter plate, the upper end of four fore-sets and work
Make platform to be connected, described material conveying platform is set on the table, described shear includes shell, upper slitter, lower knife and workbench
Base, the upper slitter is fixed on one end of knife rest, and the other end of the knife rest is movably connected on the piston end of hydraulic cylinder, described
It is movably connected in the middle part of knife rest in frame, the lower knife is fixed on the side of table base, the upper slitter is whole knife, institute
If stating upper slitter to be fixed on knife rest by evenly distributed bolt stem group, each bolt group includes the kingbolt located at middle part
With set up the auxiliary bolt in kingbolt both sides separately, described frame, table base are located in shell, and described waste material device includes
It is located at the casing in table base, the upper end open of the casing and is provided with board-type lid, the board-type lid is located at upper
The underface in region between knife, lower knife, the front end of the casing is provided with protuberance, and bottom is provided with and caves inward and be symmetrically formed
Two carrying fork truck grooves, the middle part of the board-type lid is provided with rotating shaft, and correspondingly the casing, which is located at opening, is arranged with two
The individual turn trough coordinated with rotating shaft.
2. a kind of hydraulic pendulum plate shears according to claim 1, it is characterised in that：Described shear is externally provided with guarantor
Shield.
3. a kind of hydraulic pendulum plate shears according to claim 2, it is characterised in that：Described protective cover includes being sheathed on
Cuboid-type cover body outside the shell of shear, is opening positioned at outer casing back and bottom end, the cuboid-type cover body
It is provided with corner between supporting leg, the supporting leg and is provided with cutting bits storage device positioned at the lower section of the side plate of cuboid-type cover body,
The cutting bits storage device is constituted by first baffle, second baffle and positioned at two sideskids between the two, cutting bits
The lower ending opening of storage device, the first baffle, second baffle are trapezium structure wide at the top and narrow at the bottom, and the upper end of first baffle
It is connected with the side plate of cuboid-type cover body, the height of second baffle is less than the height of first baffle.
4. a kind of hydraulic pendulum plate shears according to claim 3, it is characterised in that：Described cutting bits storage device is leaned on
Nearly material receiving is set.
5. a kind of hydraulic pendulum plate shears according to claim 1, it is characterised in that：Described material receiving upper surface is set
There is transport mechanism.
6. a kind of hydraulic pendulum plate shears according to claim 5, it is characterised in that：Described transport mechanism is transmission
Band, the conveyer belt is driven by motor.
7. a kind of hydraulic pendulum plate shears according to claim 4, it is characterised in that：Open the lower end of cutting bits storage device
The surface of board-type lid is located at mouthful.
8. a kind of hydraulic pendulum plate shears according to claim 1, it is characterised in that：Described hydraulic pendulum plate shears is set
In in outer containment vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310297.5A CN107127384A (en) | 2017-05-05 | 2017-05-05 | A kind of hydraulic pendulum plate shears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310297.5A CN107127384A (en) | 2017-05-05 | 2017-05-05 | A kind of hydraulic pendulum plate shears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107127384A true CN107127384A (en) | 2017-09-05 |
Family
ID=59715611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710310297.5A Pending CN107127384A (en) | 2017-05-05 | 2017-05-05 | A kind of hydraulic pendulum plate shears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107127384A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598366A (en) * | 2017-09-22 | 2018-01-19 | 惠州市洛玛科技有限公司 | Diced system |
| CN107839147A (en) * | 2017-11-20 | 2018-03-27 | 常州江鼎精密机械有限公司 | Caused working of plastics waste material recovery device in injection moulding process |
| CN108297230A (en) * | 2018-02-08 | 2018-07-20 | 张苗苗 | A kind of discarded plank breaker of engineering |
| CN108788281A (en) * | 2018-06-13 | 2018-11-13 | 安吉麦锐克家居有限公司 | A kind of office chair production and processing cutter device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506573A (en) * | 1981-12-28 | 1985-03-26 | Amada Company, Limited | Shearing machine |
| JPH07299645A (en) * | 1994-05-06 | 1995-11-14 | Mizutani Seiko Kk | Fixed size feeder for work in shear line |
| CN203227863U (en) * | 2013-04-18 | 2013-10-09 | 安徽省航天机床制造股份有限公司 | Plate shearing device for hydraulic swing-type plate shearing machine |
| CN204339018U (en) * | 2014-12-03 | 2015-05-20 | 东莞市志远数控设备制造有限公司 | A kind of bracing or strutting arrangement on numerical control hydraulic pendulum plate shears |
| CN204660241U (en) * | 2015-05-20 | 2015-09-23 | 洛阳大元电缆有限公司 | A kind of waste material collection device |
-
2017
- 2017-05-05 CN CN201710310297.5A patent/CN107127384A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506573A (en) * | 1981-12-28 | 1985-03-26 | Amada Company, Limited | Shearing machine |
| JPH07299645A (en) * | 1994-05-06 | 1995-11-14 | Mizutani Seiko Kk | Fixed size feeder for work in shear line |
| CN203227863U (en) * | 2013-04-18 | 2013-10-09 | 安徽省航天机床制造股份有限公司 | Plate shearing device for hydraulic swing-type plate shearing machine |
| CN204339018U (en) * | 2014-12-03 | 2015-05-20 | 东莞市志远数控设备制造有限公司 | A kind of bracing or strutting arrangement on numerical control hydraulic pendulum plate shears |
| CN204660241U (en) * | 2015-05-20 | 2015-09-23 | 洛阳大元电缆有限公司 | A kind of waste material collection device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598366A (en) * | 2017-09-22 | 2018-01-19 | 惠州市洛玛科技有限公司 | Diced system |
| CN107839147A (en) * | 2017-11-20 | 2018-03-27 | 常州江鼎精密机械有限公司 | Caused working of plastics waste material recovery device in injection moulding process |
| CN107839147B (en) * | 2017-11-20 | 2024-04-19 | 常州江鼎精密机械有限公司 | Plastic part waste recycling device generated in injection molding process |
| CN108297230A (en) * | 2018-02-08 | 2018-07-20 | 张苗苗 | A kind of discarded plank breaker of engineering |
| CN108297230B (en) * | 2018-02-08 | 2020-11-06 | 义乌市凡特塑料制品有限公司 | Engineering is with abandonment plank breaker |
| CN108788281A (en) * | 2018-06-13 | 2018-11-13 | 安吉麦锐克家居有限公司 | A kind of office chair production and processing cutter device |
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Application publication date: 20170905 |