CN112025833A - Equipment for changing punch and clamping synchronous operation for hydraulic punching of suitcase - Google Patents
Equipment for changing punch and clamping synchronous operation for hydraulic punching of suitcase Download PDFInfo
- Publication number
- CN112025833A CN112025833A CN202010894968.9A CN202010894968A CN112025833A CN 112025833 A CN112025833 A CN 112025833A CN 202010894968 A CN202010894968 A CN 202010894968A CN 112025833 A CN112025833 A CN 112025833A
- Authority
- CN
- China
- Prior art keywords
- movably connected
- clamping
- equipment
- mounting seat
- changing
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/02—Means for holding or positioning work with clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
Abstract
The invention relates to the technical field of production and processing of a suitcase and discloses equipment for changing punch and clamping synchronous operation for hydraulic punching of the suitcase. This travelling basket hydraulic pressure punches a hole with automatic drift that changes and centre gripping synchronous operation's equipment, the tool changing accessory moves downwards with the mechanism of punching a hole together, the gangbar underdrive steadiness piece function, key drive gear that floats is rotatory, the rethread is used in the cooperation of dwang and tool changer, thereby the function of automatic drift that changes has been had, the drift of difference has been changed, make the high nonconformity that pushes down, the tightness that makes the centre gripping is different, thereby make equipment centre gripping the article specification of different degrees, the power of different degrees has been held, synchronous operation's function has been had, the size that different punched a hole has been changed, the time has been saved, the production effect is improved, the inconvenient problem of operation has been solved.
Description
Technical Field
The invention relates to the technical field of production and processing of a suitcase, in particular to equipment for changing a punch and clamping the suitcase to synchronously operate in a hydraulic punching mode.
Background
The suitcase is one kind of case and bag, and it includes case inclusion, flexible pull rod and case and bag return pulley, receives extensive use because of its convenient to use, need to use hydraulic piercing press to punch a hole processing to the plastics panel in the travelling basket production process to the apparatus for producing of installation accessory on the travelling basket, hydraulic piercing press mainly has one kind of split type hydraulic piercing press and integral type piercing press two kinds, and it has obtained extensive use in the field of travelling basket production and processing.
However, in real life, the conventional hydraulic punching equipment needs to frequently change the force of the punch and the clamping force to process the suitcase, while general equipment does not have the function of changing the synchronous operation of the punch and the clamping force, so that the force of automatically changing the punch and the clamping force cannot be in direct proportion, the sequential circulating operation is needed, the time is wasted, and the processing effect is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides equipment for changing the punch and clamping the traveling case to synchronously operate in hydraulic punching, which has the advantages of automatically changing the punch and clamping and solves the problems of inconvenient operation and inaccurate processing effect.
(II) technical scheme
In order to realize the purpose of automatically changing the punch and clamping, the invention provides the following technical scheme: an equipment for changing a punch and clamping synchronous operation for hydraulic punching of a suitcase comprises a workbench, wherein a support is fixedly connected to the left end and the right end of the workbench, a mounting seat is fixedly connected to the upper end of the front surface of the workbench, a clamping device is fixedly connected to the left end above the workbench, a clamping rod is inserted in the clamping device, an equipment box is movably connected to the right end of the front surface of the clamping rod, a buffer spring is movably connected to the inner part of the mounting seat, the right end of the buffer spring is movably connected with a limiting column, the right end of the limiting column is movably connected with a metal component, an auxiliary workbench is movably connected to the upper end of the right side of the clamping device, a linkage rod is movably connected to the inner side of the auxiliary workbench, a tool changing accessory is fixedly connected to the top end of the linkage rod, a stable piece is fixedly, the tool changer is movably connected to the outer side of the rotating rod, the sliding guide rail is movably connected to the back of the gear, the punching mechanism is fixedly connected to the left end of the tool changing accessory, the hydraulic pump is movably connected to the upper end of the front face of the punching mechanism, and the lower pressing rod is fixedly connected to the left end of the punching mechanism.
Preferably, the inside recess that is provided with of mount pad and mount pad right-hand member width will be bigger than the left end width, and the inside hole groove of seting up with pressing from both sides tight pole looks adaptation of mount pad, the inboard swing joint that the left end of mount pad just is located clamping device has pressed from both sides tight pole, and this kind of structure has had gliding nature and security.
Preferably, the tool changer is arranged on the inner side of the sliding guide rail and is movably connected with a gear in the front side, the tool changer is symmetrical about the center of the rotating rod, the tool changer is identical to the central axis of the rotating rod, and the structure has stability and usability.
Preferably, the support is internally provided with a hole groove matched with the auxiliary workbench and the lower press rod, the middle of the support is movably connected with the workbench at the lower end of the mounting seat, and the structure has stability and safety.
Preferably, the right end of the lower pressing rod is movably connected with a punching mechanism at the bottom end of the hydraulic pump, the lower pressing rod is in an L shape, the punching mechanism is made of metal stainless steel, and the structure has stability and safety.
Preferably, the number of the buffer springs is three, the specification and the size of the two adjacent buffer springs are the same, the right ends of the buffer springs are fixedly connected with metal components between the supports, and the structure has stability and safety.
(III) advantageous effects
Compared with the prior art, the invention provides equipment for changing the punch and clamping the synchronous operation of the hydraulic punching of a suitcase, which has the following beneficial effects:
1. the equipment for automatically changing the punch and clamping synchronous operation for hydraulic punching of the suitcase pumps high-pressure oil into a hydraulic cavity in a punching mechanism through a hydraulic pump, the punching mechanism is driven downwards along a sliding guide rail, a tool changing accessory and the punching mechanism run downwards together, the tool changing accessory extrudes a linkage rod downwards to run, the linkage rod drives a stable part downwards to run, a floating key drives a gear to rotate, and then the rotating rod and a tool changer are matched for use, thereby having the function of automatically changing the punch, the punch changes the pressing height, the heights are inconsistent, the clamping tightness is inconsistent, thereby make equipment centre gripping article specification of different degree, the power of different degree has been held, has had the function of synchronous operation, has changed the size of different punching holes, has saved the time, has improved production effect, has solved the inconvenient problem of operation.
2. This travelling basket hydraulic pressure punches a hole with automatic drift that changes and centre gripping synchronous operation's equipment, the mechanism of punching a hole drives down along sliding guide, extrudees the slider of clamping bar left end when the holding down lever drives down, and clamping bar receives the extrusion force and has had the trend that moves right, sets up the texture with clamping bar looks adaptation on the clamping device, and the clamping bar promotes the equipment box to the right side in the mount pad reservation recess to the function of centre gripping has been had, has reached stable effect.
3. This travelling basket hydraulic pressure punches a hole with automatic change drift and centre gripping synchronous operation's equipment, the buffer spring of equipment box right-hand member receives the extrusion force and takes place deformation, and buffer spring becomes the form of stretching by acquiescence compression form, promotes spacing post operation, and spacing post is acted on and is got into in the metal component to reached and prevented off tracking and the stable supplementary effect of buffering.
Drawings
FIG. 1 is a front view of the mount structure of the present invention;
FIG. 2 is a left side view of the stent structure of the present invention;
fig. 3 is a schematic front view of a steady piece structure of the present invention;
FIG. 4 is a front view of the sliding guide structure of the present invention;
fig. 5 is a schematic front view of the steady piece structure of the present invention.
In the figure: 1. a work table; 2. a support; 3. a mounting seat; 4. a clamping device; 5. a clamping lever; 6. an equipment box; 7. a buffer spring; 8. a limiting column; 9. a metal component; 10. an auxiliary worktable; 11. a linkage rod; 12. a tool changing accessory; 13. a stabilizing member; 14. a floating key; 15. a gear; 16. rotating the rod; 17. a tool changer; 18. a sliding guide rail; 19. a punching mechanism; 20. a hydraulic pump; 21. a lower pressure rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the equipment for changing the punch and clamping synchronous operation for hydraulic punching of the suitcase comprises a workbench 1, wherein both the left end and the right end of the workbench 1 are fixedly connected with a bracket 2, a hole groove matched with an auxiliary workbench 10 and a lower pressing rod 21 is formed in the bracket 2, the middle of the bracket 2 and the lower end of a mounting seat 3 are movably connected with the workbench 1, and the structure has stability and safety;
the upper end of the front surface of the workbench 1 is fixedly connected with a mounting seat 3, a groove is formed in the mounting seat 3, the width of the right end of the mounting seat 3 is larger than that of the left end of the mounting seat 3, a hole groove matched with the clamping rod 5 is formed in the mounting seat 3, the clamping rod 5 is movably connected to the left end of the mounting seat 3 and is positioned on the inner side of the clamping device 4, and the structure has sliding performance and safety;
the left end above the workbench 1 is fixedly connected with a clamping device 4, a clamping rod 5 is inserted into the clamping device 4, the right end of the front side of the clamping rod 5 is movably connected with an equipment box 6, the inside of the mounting seat 3 is movably connected with three buffer springs 7, the number of the buffer springs 7 is three, the specification size and the distance between every two adjacent buffer springs 7 are the same, and a metal assembly 9 is fixedly connected between the right end of each buffer spring 7 and the corresponding support 2;
the right end of the buffer spring 7 is movably connected with a limiting column 8, the right end of the limiting column 8 is movably connected with a metal component 9, the upper end of the right side of the clamping device 4 is movably connected with an auxiliary workbench 10, the inner side of the auxiliary workbench 10 is movably connected with a linkage rod 11, the top end of the linkage rod 11 is fixedly connected with a tool changing accessory 12, the lower end of the linkage rod 11 is fixedly connected with a stable part 13, the left side of the bottom end of the stable part 13 is movably connected with a floating key 14, the left end of the front side of the floating key 14 is movably connected with a gear 15, the axis of the gear 15 is movably connected with a rotating rod 16, the outer side of the rotating rod 16 is movably connected with a tool changer 17, the inner side of the tool changer 17 is positioned on a sliding guide rail 18, the;
the back of the gear 15 is movably connected with a sliding guide rail 18, the left end of the tool changing accessory 12 is fixedly connected with a punching mechanism 19, the upper end of the front of the punching mechanism 19 is movably connected with a hydraulic pump 20, and the left end of the punching mechanism 19 is fixedly connected with a lower pressing rod 21; the right end of the lower pressure rod 21 and the bottom end of the hydraulic pump 20 are movably connected with a punching mechanism 19, the lower pressure rod 21 is in an L shape, and the punching mechanism 19 is made of metal stainless steel, so that the structure has stability and safety.
When in use, firstly, the equipment box 6 is placed in the reserved groove of the mounting seat 3, the equipment box 6 is positioned right below a position to be processed, then, the hydraulic pump 20 pumps high-pressure oil into a hydraulic cavity inside the punching mechanism 19, the driving part is started, the punching mechanism 19 is electrified to have downward driving force, a track matched with the punching mechanism 19 is arranged on the sliding guide rail 18, the punching mechanism 19 is driven downwards along the sliding guide rail 18, the tool changing fitting 12 is fixedly connected with the punching mechanism 19, the tool changing fitting 12 and the punching mechanism 19 run downwards together, the tool changing fitting 12 downwards extrudes the linkage rod 11 to run, the linkage rod 11 downwards drives the steady piece 13 to run, the left end of the steady piece 13 is movably connected with the floating key 14, the floating key 14 is fixedly connected with the gear 15, the floating key 14 drives the gear 15 to rotate, the gear 15 and the tool changer 17 share one shaft, under the action of the rotating rod 16 of the shared shaft, thereby enabling the tool changer 17 to synchronously rotate, and slowly move downwards while rotating, thereby having the function of automatically changing punches, and changing different punches, thereby avoiding the tedious operation of adjusting a machine from the beginning, saving time, and improving production effect, meanwhile, when the punching mechanism 19 is driven downwards along the sliding guide rail 18, the lower pressure rod 21 is fixedly connected with the punching mechanism 19, the lower pressure rod 21 extrudes the slide block at the left end of the clamping rod 5 when driven downwards, the clamping rod 5 is extruded rightwards, and the internal thread thereof interacts with the clamping device 4 under the action of the extrusion force rightwards, so that the clamping device has the trend of moving rightwards, the clamping device 4 is provided with textures matched with the clamping rod 5, the clamping rod 5 pushes the equipment box 6 to the right side to the reserved groove of the mounting seat 3, thereby having the function of clamping, the buffer spring 7 at the right end of the equipment box 6 is extruded force to deform, buffer spring 7 becomes by the compression form of acquiescence and extends the form, promotes the operation of spacing post 8, and spacing post 8 is acted on and gets into in the metal subassembly 9 to reached and prevented the off tracking and cushioned stable supplementary effect, mechanism 19 of punching a hole this moment is located equipment box 6 directly over, and required drift also becomes vertical setting state, under the pressure effect, accomplishes and punches a hole.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a travelling basket hydraulic pressure punches a hole with changing drift and centre gripping synchronous operation's equipment, includes workstation (1), its characterized in that: the automatic tool changing device is characterized in that supports (2) are fixedly connected to the left end and the right end of a workbench (1), a mounting seat (3) is fixedly connected to the upper end of the front face of the workbench (1), a clamping device (4) is fixedly connected to the left end of the upper portion of the workbench (1), a clamping rod (5) is inserted into the clamping device (4), an equipment box (6) is movably connected to the right end of the front face of the clamping rod (5), a buffer spring (7) is movably connected to the inner portion of the mounting seat (3), a limiting column (8) is movably connected to the right end of the buffer spring (7), a metal component (9) is movably connected to the right end of the limiting column (8), an auxiliary workbench (10) is movably connected to the upper end of the right side of the clamping device (4), a linkage rod (11) is movably connected to the inner side of the auxiliary, the left side of the bottom end of the stable part (13) is movably connected with a floating key (14), the front left end of the floating key (14) is movably connected with a gear (15), the axis of the gear (15) is movably connected with a rotating rod (16), the outer side of the rotating rod (16) is movably connected with a tool changer (17), the back of the gear (15) is movably connected with a sliding guide rail (18), the left end of a tool changing accessory (12) is fixedly connected with a punching mechanism (19), the front upper end of the punching mechanism (19) is movably connected with a hydraulic pump (20), and the left end of the punching mechanism (19).
2. The equipment for changing the synchronous operation of the punch and the clamping for hydraulic punching of the suitcase according to claim 1, wherein the equipment comprises: the mounting seat is characterized in that a groove is formed in the mounting seat (3), the width of the right end of the mounting seat (3) is larger than that of the left end of the mounting seat, a hole groove matched with the clamping rod (5) is formed in the mounting seat (3), and the left end of the mounting seat (3) and the inner side of the mounting seat (4) are movably connected with the clamping rod (5).
3. The equipment for changing the synchronous operation of the punch and the clamping for hydraulic punching of the suitcase according to claim 1, wherein the equipment comprises: tool changer (17) inboard just is located sliding guide (18) openly swing joint has gear (15), and tool changer (17) are the same about dwang (16) centrosymmetry and tool changer (17) and dwang (16) axis.
4. The equipment for changing the synchronous operation of the punch and the clamping for hydraulic punching of the suitcase according to claim 1, wherein the equipment comprises: the hole groove matched with the auxiliary workbench (10) and the lower pressing rod (21) is formed in the support (2), and the workbench (1) is movably connected in the middle of the support (2) and located at the lower end of the mounting seat (3).
5. The equipment for changing the synchronous operation of the punch and the clamping for hydraulic punching of the suitcase according to claim 1, wherein the equipment comprises: the lower pressing rod (21) is arranged at the right end of the hydraulic pump (20), and is movably connected with a punching mechanism (19), the lower pressing rod (21) is L-shaped, and the punching mechanism (19) is made of metal stainless steel.
6. The equipment for changing the synchronous operation of the punch and the clamping for hydraulic punching of the suitcase according to claim 1, wherein the equipment comprises: buffer spring (7) quantity is total three, and two adjacent buffer spring (7) specification and size and interval are all the same, and buffer spring (7) right-hand member just is located fixedly connected with metal assembly (9) between support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010894968.9A CN112025833A (en) | 2020-08-31 | 2020-08-31 | Equipment for changing punch and clamping synchronous operation for hydraulic punching of suitcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010894968.9A CN112025833A (en) | 2020-08-31 | 2020-08-31 | Equipment for changing punch and clamping synchronous operation for hydraulic punching of suitcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112025833A true CN112025833A (en) | 2020-12-04 |
Family
ID=73587655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010894968.9A Withdrawn CN112025833A (en) | 2020-08-31 | 2020-08-31 | Equipment for changing punch and clamping synchronous operation for hydraulic punching of suitcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112025833A (en) |
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| CN1421304A (en) * | 2001-11-30 | 2003-06-04 | 株式会社Ktf | Electric punching device |
| JP2007181905A (en) * | 2006-01-10 | 2007-07-19 | Konica Minolta Medical & Graphic Inc | Card punching unit and card punching device |
| CN202780644U (en) * | 2012-03-16 | 2013-03-13 | 刘怡君 | Synchronous cutter beating mechanism for automatic cutter-changing tool magazine |
| CN103033609A (en) * | 2011-09-30 | 2013-04-10 | 奥索临床诊断有限公司 | Disposable foil punch for immunohematology test elements |
| CN106738038A (en) * | 2016-12-21 | 2017-05-31 | 中国电子科技集团公司第三十二研究所 | Device and method for forming precise circular hole in oriented metal wire silicone rubber |
| CN108748399A (en) * | 2018-08-20 | 2018-11-06 | 芜湖博悦特汽车零部件有限公司 | A kind of automatic tool changer of guillotine |
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| CN109482726A (en) * | 2019-01-15 | 2019-03-19 | 寇俊祥 | A kind of formed punch adjustable mould |
| CN209303512U (en) * | 2019-07-24 | 2019-08-27 | 广东智多慧智能装备有限公司 | Sash bar punching apparatus |
| CN110202072A (en) * | 2019-07-23 | 2019-09-06 | 河南鑫安利安全科技股份有限公司 | A kind of industry stamping press safety device |
| CN110918761A (en) * | 2019-11-27 | 2020-03-27 | 余姚泰速自动化科技有限公司 | Switching method for automatically switching punching modules by six heads |
| CN210412115U (en) * | 2019-05-24 | 2020-04-28 | 四川简达金属构件有限公司 | Cutter switching device of hydraulic punching machine |
| CN210647995U (en) * | 2019-08-27 | 2020-06-02 | 新佳美(漳州)日用品有限公司 | Efficient continuous punching precision die for steel pipe furniture |
| CN210705111U (en) * | 2019-10-10 | 2020-06-09 | 泉州市凯吉彩钢有限公司 | Novel rolling slats door leaf guillootine |
| CN111331675A (en) * | 2020-03-17 | 2020-06-26 | 陆聆聆 | Punching device based on reciprocating motion equidistance punching and synchronous clamping |
| CN210911271U (en) * | 2019-09-09 | 2020-07-03 | 江西京九药业有限公司 | Quick forming die for calcium tablet |
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2020
- 2020-08-31 CN CN202010894968.9A patent/CN112025833A/en not_active Withdrawn
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| CN1421304A (en) * | 2001-11-30 | 2003-06-04 | 株式会社Ktf | Electric punching device |
| JP2007181905A (en) * | 2006-01-10 | 2007-07-19 | Konica Minolta Medical & Graphic Inc | Card punching unit and card punching device |
| CN103033609A (en) * | 2011-09-30 | 2013-04-10 | 奥索临床诊断有限公司 | Disposable foil punch for immunohematology test elements |
| CN202780644U (en) * | 2012-03-16 | 2013-03-13 | 刘怡君 | Synchronous cutter beating mechanism for automatic cutter-changing tool magazine |
| CN106738038A (en) * | 2016-12-21 | 2017-05-31 | 中国电子科技集团公司第三十二研究所 | Device and method for forming precise circular hole in oriented metal wire silicone rubber |
| CN208604140U (en) * | 2018-05-10 | 2019-03-15 | 天津宝盈电脑机械有限公司 | A kind of multitool rotating punching device |
| CN108748399A (en) * | 2018-08-20 | 2018-11-06 | 芜湖博悦特汽车零部件有限公司 | A kind of automatic tool changer of guillotine |
| CN109482726A (en) * | 2019-01-15 | 2019-03-19 | 寇俊祥 | A kind of formed punch adjustable mould |
| CN210412115U (en) * | 2019-05-24 | 2020-04-28 | 四川简达金属构件有限公司 | Cutter switching device of hydraulic punching machine |
| CN110202072A (en) * | 2019-07-23 | 2019-09-06 | 河南鑫安利安全科技股份有限公司 | A kind of industry stamping press safety device |
| CN209303512U (en) * | 2019-07-24 | 2019-08-27 | 广东智多慧智能装备有限公司 | Sash bar punching apparatus |
| CN210647995U (en) * | 2019-08-27 | 2020-06-02 | 新佳美(漳州)日用品有限公司 | Efficient continuous punching precision die for steel pipe furniture |
| CN210911271U (en) * | 2019-09-09 | 2020-07-03 | 江西京九药业有限公司 | Quick forming die for calcium tablet |
| CN210705111U (en) * | 2019-10-10 | 2020-06-09 | 泉州市凯吉彩钢有限公司 | Novel rolling slats door leaf guillootine |
| CN110918761A (en) * | 2019-11-27 | 2020-03-27 | 余姚泰速自动化科技有限公司 | Switching method for automatically switching punching modules by six heads |
| CN111331675A (en) * | 2020-03-17 | 2020-06-26 | 陆聆聆 | Punching device based on reciprocating motion equidistance punching and synchronous clamping |
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Application publication date: 20201204 |