CN109079037A - A kind of device and its operating method for quick-replaceable edger - Google Patents
A kind of device and its operating method for quick-replaceable edger Download PDFInfo
- Publication number
- CN109079037A CN109079037A CN201811052058.5A CN201811052058A CN109079037A CN 109079037 A CN109079037 A CN 109079037A CN 201811052058 A CN201811052058 A CN 201811052058A CN 109079037 A CN109079037 A CN 109079037A
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- China
- Prior art keywords
- edger
- driving device
- plate
- support plate
- replaceable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/14—Particular arrangements for handling and holding in place complete dies
- B21D37/147—Tool exchange carts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a kind of devices for quick-replaceable edger, including mould replacing trolley, the shared backing plate for carrying edger and the support plate for carrying the shared backing plate are provided on the mould replacing trolley, the support plate includes the public plate and motherboard being mutually slidably connected, and the motherboard can protrude into bead cutter when sliding；It is provided on the mould replacing trolley for changing the first driving device of horizontal position where the shared backing plate, and for changing the second driving device of height vertical where the shared backing plate.And a kind of operating method of quick-replaceable edger.The invention avoids the problem of edger is to switch over manually is agitated on traditional form, the mold changing efficiency of edger is effectively increased, to save cost of labor, improves productivity effect.
Description
Technical field
The invention belongs to industrial die change technical fields, and in particular to a kind of device for quick-replaceable edger and
Its operating method.
Background technique
In the supply chain of automobile production, to meet product quality, labor intensity of workers is reduced, the use of edger has been got over
Come more extensive.Along with customer's diversification, personalized demand, traditional mass production method can no longer meet customer
Demand.The production method of small mount, multi items is imperative.Simultaneously because the vehicle structure of production and its configuration have it is very big
Difference, the switching of mold also become frequent.Mold switching time refers to from the last one qualified products of previous kind, arrives next product
Time interval between kind of the-a qualified products.It is said from the angle of cost, this part-time is the time of not output value,
So needing to shorten as much as possible, to reduce waste.Mould replacing time mainly consists of three parts: time, when mold changing operates
Between, adjustment time.The length of die change time, directly affects production efficiency and cost of labor.
" interior operation " and " outer operation " can be divided by its time response by changing the mold operation.Interior operation: refer to that those must be by life
Active interrupt is produced to get off the activity that can just complete, production only could continue after the completion of activity, mainly including mold attaching/detaching,
The work such as equipment inspection, debugging；Outer operation: refer to that those do not have to that production activity is made to stop just achievable activity, do not influence normal
Output, specifically include that find mold, hanged mold, tool prepare etc. actions.
According to production status, the problem of influencing edger switching time mainly in " interior operation ", because of the spy of bead cutter
The limitation of different property and field regions need to be by being accomplished manually when causing to dismount edger.Considerably increase edger switching when
Between, the labor intensity of employee is increased, to affect production efficiency.
It when replacing edger, needs to be pitched edger to bead cutter with fork truck, when regional location deficiency, need with row
Vehicle is hung, and goes to push away with manpower, then manually with the right and left of crowbar sled edger, with to the limit on positive bead cutter, then
The fixing bolt of urgent edger again.During this installs edger, manually operated on alignment bead cutter with crowbar
Limit is to install the very important link of edger, and in this link, because edger is too heavy, manual operation is difficult, while need pair
Limit hole on quasi- bead cutter causes operation more difficult；Two people are needed to expend 4 hours or so time under normal conditions,
It can complete the dismounting work of edger.
Summary of the invention
To solve the above-mentioned problems, the present invention is intended to provide a kind of device for quick-replaceable edger, is cut with improving
The mold changing efficiency of side mode saves cost of labor, improves productivity effect.
To achieve the above object, the present invention is achieved by following technical scheme:
A kind of device for quick-replaceable edger, including mould replacing trolley are provided with for holding on the mould replacing trolley
The shared backing plate of edger and the support plate for carrying the shared backing plate are carried, the support plate includes that mutually sliding connects
The public plate and motherboard connect, the motherboard can protrude into bead cutter when sliding；It is provided on the mould replacing trolley for changing described
The first driving device of horizontal position where sharing backing plate, and for changing the second of height vertical where the shared backing plate
Driving device.
Preferably, being provided with the center positioning mechanism for edger positioning on the shared backing plate.
Preferably, the first driving device includes the first lead screw transmission mechanism being arranged on the mould replacing trolley,
First lead screw transmission mechanism includes the first drive block for connecting the support plate, is horizontally disposed with and is threadedly coupled described first
First screw rod of drive block, first screw rod is mating to be provided with the first driving motor；Or the first driving device includes water
The telescopic rod of flat the first telescoping cylinder being arranged on the mould replacing trolley, first telescoping cylinder connects the support plate.
Preferably, further including the third driving device for controlling the relatively described public plate sliding distance of the motherboard, institute
Stating third driving device includes the hand-rail type push-pull mechanism being arranged on the public plate, the movable end of the hand-rail type push-pull mechanism
Horizontal anomalous movement simultaneously connects the motherboard.
Preferably, second driving device includes the second lead screw transmission mechanism being arranged under the support plate, institute
Stating the second lead screw transmission mechanism includes connecting jack screw rod and the transmission connection jacking screw rod second of the support plate
Driving motor；Or second driving device includes the second telescoping cylinder being vertically arranged on the mould replacing trolley, described second
The telescopic rod of telescoping cylinder connects the support plate.
Preferably, corresponding to second driving device in the support plate is provided with several sliding guides.
Preferably, limited position mechanism is arranged between the mould replacing trolley and the bead cutter, the position-limit mechanism includes
The mould replacing trolley is arranged in exist with the first limit plate of the bead cutter contact jaw and the corresponding first limit plate setting
Second limit plate of the bead cutter side, first limit plate and second limit plate clamping connect.
Preferably, controller is additionally provided on the mould replacing trolley, controller electrical connection the first driving dress
It sets and the second driving device.
It is a further object to provide a kind of operating methods of quick-replaceable edger:
A kind of operating method of quick-replaceable edger, based on the above-described device for quick-replaceable edger,
The following steps are included:
S1, the edger needed replacing is installed on the shared backing plate, and the mould replacing trolley is moved to needs
By the bead cutter of more edger；
S2, after closely being connect mould replacing trolley with bead cutter, second driving device is driven to adjust edger
Position height, and drive the first driving device that edger is sent into bead cutter；
S3, edger is lifted with press machine, drives the first driving device to exit support plate in bead cutter, and move
Walk mould replacing trolley；
S4, it puts down edger and completes the installation of edger.
Further, further include following operation in step S2:
S2.1, hand-rail type push-pull mechanism is set in the support plate, and the corresponding support plate is arranged in bead cutter
Limited post；
When edger is sent into bead cutter close to the limited post by S2.2, the driving first driving device, hand is used
Formula push-pull mechanism is shaken to be finely adjusted the position of edger.
Compared with prior art, the beneficial effects of the present invention are:
1, a kind of device for quick-replaceable edger provided by the invention, can be in " the outer operation " of mould replacing trolley
In, a large amount of times saved to cost required for replacement edger, the edger needed replacing is mounted on mold changing platform in advance
Che Shang, operation when with linking " interior operation ", substantially increases the replacement efficiency of edger.
2, the mould replacing trolley provided in this programme is provided with shared backing plate, and is provided with centralized positioning on sharing backing plate
The pre-installation and replacement of various sizes edger can be convenient in mechanism；It is provided with first driving device and the second driving simultaneously
Device can easily realize to edger the regulation of position in the horizontal direction and on vertical direction, the convenient replacement to edger
Operation, greatly reduces the labor intensity of operator.
3, third driving device is further provided in this programme, and the limit being arranged between mould replacing trolley and bead cutter
Position mechanism, the relative position of mould replacing trolley and bead cutter can be further fixed by the position-limit mechanism, avoids changing in operating process
Mould trolley moves, and by the adjustment to third driving device, it can be achieved that the fine position of edger, substantially increases
The replacement installation accuracy of edger, further improves production efficiency.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of mould replacing trolley in the present invention；
Fig. 2 is to use schematic diagram before mould replacing trolley of the present invention changes the mold；
Fig. 3 is to use schematic diagram when mould replacing trolley of the present invention changes the mold；
Fig. 4 is to use schematic diagram after mould replacing trolley of the present invention changes the mold；
Fig. 5 is the enlarged structure schematic diagram of position limiting structure of the present invention；
Fig. 6 is the structural schematic diagram of the first limit plate of the invention.
Wherein:
1- mould replacing trolley, 121- public affairs plate, 1211- sliding rail, 122- motherboard, 1221- positioning pin, 131- first are driven
Block, the first screw rod of 132-, the first driving motor of 133-, the second driving motor of 141-, 142- bidirectional driving gear case, 143- sliding
Guide rod, 15- position limiting structure, the first limit plate of 151-, the second limit plate of 152-, 153- groove, 154- strip, 2- edger, 21-
Share backing plate, 3- bead cutter.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention will be described in detail.It should be noted that in the absence of conflict, presently filed embodiment and reality
The feature applied in mode can be combined with each other.Many details are explained in the following description in order to fully understand this hair
Bright, described embodiment is only some embodiments of the invention, rather than whole embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Mode shall fall within the protection scope of the present invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Embodiment 1
As shown in figures 1 to 6, a kind of device for quick-replaceable edger, including mould replacing trolley 1 are provided in the present embodiment,
The shared backing plate 21 for carrying edger 2 is provided on the mould replacing trolley 1 and for carrying the shared backing plate 21
Support plate.
The shared backing plate 21 is set as a rectangular panel blocks, is provided on the shared backing plate 21 and positions for edger 2
Center positioning mechanism, in order to the location and installation of the edger 2 of different outer dimensions.As a preferred solution, this reality
Applying the center positioning mechanism in example is the dowel hole being arranged on 21 bottom surface of shared backing plate, in the present embodiment,
It is provided with two positioning pins 1221 in the support plate, and protrudes and is arranged on the end face of the support plate.
The support plate includes the public plate 121 and motherboard 122 being mutually slidably connected, and the motherboard 122 can protrude into when sliding
In bead cutter 3；In the present embodiment, the both ends of the public affairs plate 121 are provided with sliding rail 1211, the both ends pair of the motherboard 122
The sliding rail 1211 is answered to be provided with pulley.
The first driving dress for changing the shared 21 place horizontal position of backing plate is provided on the mould replacing trolley 1
It sets, and for changing the second driving device of vertical height where the shared backing plate 21.
As a preferred solution, the first driving device includes first be arranged on the mould replacing trolley 1
Bar transmission mechanism, first lead screw transmission mechanism include the first drive block that connection is arranged on the support plate bottom end face
131, in the first screw rod 132 for being horizontally disposed with and being threadedly coupled first drive block 131, first screw rod 132, which is matched, to be arranged
It is equipped with the first driving motor 133；The rotation that first screw rod 132 is driven by first driving motor 133, to drive
Edger 2 is sent into bead cutter 3 by the horizontal movement of first drive block 131 and the support plate.Further, described
The third driving device for controlling the motherboard 122 121 sliding distance of the public plate relatively is additionally provided on mould replacing trolley 1,
The third driving device includes the hand-rail type push-pull mechanism (not shown) being arranged on the public plate 121, described hand
Formula push-pull mechanism includes the support base being arranged on the public plate 121, the wheeled handle being rotatably provided on the support base,
It is fixedly installed drive screw on the handle, the movable external screw thread to be stretched is threaded on the drive screw
Set, the movable end horizontal anomalous movement of the external thread sleeve simultaneously connects the motherboard 122, by the handle to hand-rail type push-pull mechanism into
The movable end of row rotation, driving hand-rail type push-pull mechanism moves forward or back, to realize the fine tuning to 2 position of edger.
As a preferred solution, second driving device includes that the second screw rod being arranged under the support plate passes
Motivation structure, second lead screw transmission mechanism include connecting jacking screw rod and the transmission connection jacking of the support plate
Second driving motor 141 of screw rod；In the present embodiment, the jacking screw rod is provided with two groups, second driving motor 141
It is provided with one, second driving motor 141 is sequentially connected the jacking silk respectively by two groups of bidirectional driving gear cases 142
Bar, to realize two jacking screw rods to the synchronous jack-up of support plate or fall.In addition, corresponding to described second in the support plate
Driving device is provided with four sliding guides 143, further ensures that the up and down balance system of support plate.
In the present embodiment, position-limit mechanism 15, the limit are additionally provided between the mould replacing trolley 1 and the bead cutter 3
Position mechanism 15 includes that the mould replacing trolley 1 and the first limit plate 151 of 3 contact jaw of bead cutter and corresponding institute is arranged in
State the second limit plate 152 that 3 side of bead cutter is arranged in the first limit plate 151, first limit plate 151 and described the
The clamping connection of two limit plates 152.Specifically, on first limit plate 151 in the present embodiment with second limit plate 152
On be provided with consistent groove 153, wherein in first limit plate 151 or the groove 153 of second limit plate 152
It is interior, it is swingable to be hingedly provided with a strip 154, so-called clamping connection can be fast implemented by swinging the strip 154.
Further, controller 16 is additionally provided on the mould replacing trolley 1, the controller 16 is electrically connected described first
Driving device and the second driving device；First driving device and second can be driven by the operation to the controller 16
Device carries out drive control, and then adjusts the location status of the support plate.
To provide a kind of operation side of quick-replaceable edger convenient for further understanding to this programme, in the present embodiment
Method, including following operating procedure:
S1, according to actual operation, in advance by the edger 2 needed replacing lifting be installed on the shared backing plate 21
On, edger 2 is positioned by positioning pin 1221, and the mould replacing trolley 1 is moved to the trimming for needing more edger 2
By machine 3；In the present embodiment, several universal wheels can be arranged in bottom in the mould replacing trolley 1, to realize to mould replacing trolley 1
Flexibly use.
S2, mould replacing trolley 1 is closely connect by the first limit plate 151 with the second limit plate 152 with bead cutter 3
Afterwards, it drives second driving device to adjust the position height of edger 2, then drives the first driving device by trimming again
Mould 2 is sent into bead cutter 3；Wherein it is possible to which the corresponding support plate, is arranged limited post in bead cutter 3, described first is driven to drive
When edger 2 is sent into bead cutter 3 close to the limited post by dynamic device, by the rotation hand-rail type push-pull mechanism, to cutting
The position of side mode 2 is finely adjusted.
S3, edger 2 is lifted using press machine, and drives the first driving device that support plate is exited bead cutter 3
It is returned to original horizontal position after interior, then drives second driving device that support plate is rolled back original height, and remove
Mould replacing trolley 1.
S4, edger 2 is put down using press machine, complete the installation locking of edger 2, and start to produce as a trial；At this point,
Carry out pre-mounting operation of next edger 2 on mould replacing trolley 1.
Embodiment 2
It is not repeated with the something in common in embodiment 1, in the present embodiment, the first driving device includes horizontally disposed
The telescopic rod of the first telescoping cylinder on the mould replacing trolley 1, first telescoping cylinder connects the support plate, to realize to institute
State the control of support plate horizontal position.In addition, second driving device includes be vertically arranged on the mould replacing trolley 1
The telescopic rod of two telescoping cylinders, second telescoping cylinder connects the support plate, and the height of support plate is adjusted with realizing.
Telescoping cylinder in the present embodiment is all made of hydraulic or air pressure telescoping cylinder, and specific structure type can be found in existing skill
Art.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, therefore
Without departing from the technical solutions of the present invention, according to the technical essence of the invention it is to the above embodiments it is any modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of device for quick-replaceable edger, which is characterized in that including mould replacing trolley, be arranged on the mould replacing trolley
Having the shared backing plate for carrying edger and the support plate for carrying the shared backing plate, the support plate includes phase
The public plate and motherboard being mutually slidably connected, the motherboard can protrude into bead cutter when sliding；
It is provided on the mould replacing trolley for changing the first driving device of horizontal position where the shared backing plate, Yi Jiyong
The second driving device of vertical height where changing the shared backing plate.
2. the device according to claim 1 for quick-replaceable edger, which is characterized in that set on the shared backing plate
It is equipped with the center positioning mechanism for edger positioning.
3. the device according to claim 1 for quick-replaceable edger, which is characterized in that the first driving device
Including the first lead screw transmission mechanism being arranged on the mould replacing trolley, first lead screw transmission mechanism includes connecting the branch
First drive block of fagging, the first screw rod that is horizontally disposed and being threadedly coupled first drive block, first screw rod are mating
It is provided with the first driving motor；Or the first driving device includes that first be horizontally set on the mould replacing trolley stretches
The telescopic rod of cylinder, first telescoping cylinder connects the support plate.
4. the device according to claim 1 or 3 for quick-replaceable edger, which is characterized in that further include for controlling
The third driving device of the relatively described public plate sliding distance of the motherboard is made, the third driving device includes being arranged in the public affairs
Hand-rail type push-pull mechanism on plate, the movable end horizontal anomalous movement of the hand-rail type push-pull mechanism simultaneously connect the motherboard.
5. the device according to claim 1 or 3 for quick-replaceable edger, which is characterized in that second driving
Device includes the second lead screw transmission mechanism being arranged under the support plate, and second lead screw transmission mechanism includes described in connection
Second driving motor of the jacking screw rod of support plate and the transmission connection jacking screw rod；Or the second driving device packet
The second telescoping cylinder being vertically arranged on the mould replacing trolley is included, the telescopic rod of second telescoping cylinder connects the support plate.
6. the device according to claim 5 for quick-replaceable edger, which is characterized in that corresponding in the support plate
Second driving device is provided with several sliding guides.
7. the device according to claim 1 for quick-replaceable edger, which is characterized in that the mould replacing trolley and institute
It states and limited position mechanism is set between bead cutter, the position-limit mechanism includes that setting is contacted in the mould replacing trolley with the bead cutter
First limit plate at end and corresponding first limit plate are arranged in the second limit plate of the bead cutter side, and described the
One limit plate and second limit plate clamping connect.
8. the device according to claim 1 for quick-replaceable edger, which is characterized in that on the mould replacing trolley also
It is provided with controller, the controller is electrically connected the first driving device and the second driving device.
It is described in any item for quickly more based on the claims 1-8 9. a kind of operating method of quick-replaceable edger
Change the device of edger, which comprises the following steps:
S1, the edger needed replacing is installed on the shared backing plate, and the mould replacing trolley is moved to and needs more to cut
By the bead cutter of side mode；
S2, after closely being connect mould replacing trolley with bead cutter, second driving device is driven to adjust the position of edger
Highly, and drive the first driving device that edger is sent into bead cutter；
S3, edger is lifted with press machine, drives the first driving device to exit support plate in bead cutter, and remove and change
Mould trolley；
S4, it puts down edger and completes the installation of edger.
10. operating method according to claim 9, which is characterized in that further include following operation in step S2:
S2.1, hand-rail type push-pull mechanism is set in the support plate, and limit is arranged in the corresponding support plate in bead cutter
Column；
When edger is sent into bead cutter close to the limited post by S2.2, the driving first driving device, hand-rail type is used
Push-pull mechanism is finely adjusted the position of edger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052058.5A CN109079037A (en) | 2018-09-10 | 2018-09-10 | A kind of device and its operating method for quick-replaceable edger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052058.5A CN109079037A (en) | 2018-09-10 | 2018-09-10 | A kind of device and its operating method for quick-replaceable edger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109079037A true CN109079037A (en) | 2018-12-25 |
Family
ID=64841013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811052058.5A Pending CN109079037A (en) | 2018-09-10 | 2018-09-10 | A kind of device and its operating method for quick-replaceable edger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109079037A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604426A (en) * | 2020-06-16 | 2020-09-01 | 浙江理工大学 | Automatic replacing device for combined punching machine die |
| CN113714399A (en) * | 2021-09-14 | 2021-11-30 | 江苏智石科技有限公司 | Quick die change system of die change platform truck |
| CN113878267A (en) * | 2021-09-10 | 2022-01-04 | 江苏博纳汽车零部件有限公司 | Rapid die changing system and method for multi-die shared welding machine |
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| US4449907A (en) * | 1982-02-04 | 1984-05-22 | Aioi Seiki Kabushiki Kaisha | Dies exchanging device for a machine using dies |
| WO2009090711A1 (en) * | 2008-01-16 | 2009-07-23 | Pascal Engineering Corporation | Die carrying platform car |
| CN202725845U (en) * | 2012-05-31 | 2013-02-13 | 长城汽车股份有限公司 | Rapid positioning device |
| CN106315445A (en) * | 2015-11-11 | 2017-01-11 | 金湖三木机械制造实业有限公司 | Die wheel replacing trolley |
| CN106426666A (en) * | 2016-11-18 | 2017-02-22 | 江苏智石科技有限公司 | Quick mold change trolley and mold change method thereof |
| CN107138625A (en) * | 2017-06-29 | 2017-09-08 | 中国重型机械研究院股份公司 | A kind of die holder more changing device and its replacing options |
| CN108246893A (en) * | 2018-01-26 | 2018-07-06 | 重庆肯卓科技有限公司 | A kind of numerical control rapid mould changing method and numerical control quick die change device |
| CN208758484U (en) * | 2018-09-10 | 2019-04-19 | 广州德志金属制品有限公司 | A kind of device for quick-replaceable edger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4449907A (en) * | 1982-02-04 | 1984-05-22 | Aioi Seiki Kabushiki Kaisha | Dies exchanging device for a machine using dies |
| WO2009090711A1 (en) * | 2008-01-16 | 2009-07-23 | Pascal Engineering Corporation | Die carrying platform car |
| CN202725845U (en) * | 2012-05-31 | 2013-02-13 | 长城汽车股份有限公司 | Rapid positioning device |
| CN106315445A (en) * | 2015-11-11 | 2017-01-11 | 金湖三木机械制造实业有限公司 | Die wheel replacing trolley |
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| CN108246893A (en) * | 2018-01-26 | 2018-07-06 | 重庆肯卓科技有限公司 | A kind of numerical control rapid mould changing method and numerical control quick die change device |
| CN208758484U (en) * | 2018-09-10 | 2019-04-19 | 广州德志金属制品有限公司 | A kind of device for quick-replaceable edger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604426A (en) * | 2020-06-16 | 2020-09-01 | 浙江理工大学 | Automatic replacing device for combined punching machine die |
| CN113878267A (en) * | 2021-09-10 | 2022-01-04 | 江苏博纳汽车零部件有限公司 | Rapid die changing system and method for multi-die shared welding machine |
| CN113714399A (en) * | 2021-09-14 | 2021-11-30 | 江苏智石科技有限公司 | Quick die change system of die change platform truck |
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