CN109604431B - Machine shell processing punch press - Google Patents
Machine shell processing punch press Download PDFInfo
- Publication number
- CN109604431B CN109604431B CN201811640795.7A CN201811640795A CN109604431B CN 109604431 B CN109604431 B CN 109604431B CN 201811640795 A CN201811640795 A CN 201811640795A CN 109604431 B CN109604431 B CN 109604431B
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- Prior art keywords
- shell
- gear
- punch
- bevel gear
- connecting rod
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/36—Perforating, i.e. punching holes using rotatable work or tool holders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Punching Or Piercing (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention belongs to the field of punching devices using rigid equipment or tools, and particularly discloses a shell processing punch press, wherein a rack is fixedly connected with a shell, and a power source is fixedly connected with the shell; the output shaft of the motor is connected with one end of a crankshaft, and the crankshaft is rotationally connected with the shell; one end of the connecting rod is hinged with the punch; one end of the crankshaft is connected with a first bevel gear, a second bevel gear is rotationally connected with the rack, and the first bevel gear is meshed with the second bevel gear; the second bevel gear is coaxially connected with a rotating shaft, the rotating shaft is coaxially connected with an incomplete gear, a complete gear is rotatably connected to the rack, and the incomplete gear is meshed with the complete gear; the complete gear is coaxially and fixedly connected with a connecting shaft, the connecting shaft is coaxially and fixedly connected with a turntable, and the turntable is in rotating fit with the shell; the upper end face of the rotary table is provided with four concave cavities which are evenly arranged along the circumferential direction of the rotary table, the four concave cavities are internally connected with a die, and the punch and one of the concave cavities are in the same vertical direction. The punching machine can improve the processing efficiency and reduce the potential safety hazard.
Description
Technical Field
The invention belongs to the field of punching devices using rigid equipment or tools, and particularly discloses a shell machining punch press.
Background
The motor casing (casing for short) is a part for containing all the components of the motor, and is mainly used for protecting the motor components from rainwater, corrosion, rust and the like. In the process of machining the shell, a punch press is needed to punch the shell.
The punching machine is a punching type press machine, and can perform operations such as punching, forming and shaping on a workpiece through a die. When the punching machine is used, most of the existing feeding and taking processes adopt a manual mode. When adopting manual mode to punch a hole, the punch press generally can not continuous operation, need place the casing earlier after, start the drift again and punch a hole, this just leads to work efficiency low. Some machines are now available for continuous punching, where the feeding is done by a robot. However, in the above operation mode, when the manipulator is inserted into the punch press, the punch is still operating, and the punch may punch the manipulator, which may cause a great safety hazard.
Disclosure of Invention
The invention aims to provide a shell machining punch press which can improve machining efficiency and reduce potential safety hazards.
In order to achieve the purpose, the basic scheme provided by the invention is as follows: a shell processing punch comprises a rack, a shell, a die and a punch, wherein the rack is fixedly connected with the shell, and the shell processing punch also comprises a power source, a crankshaft, a connecting rod, a first bevel gear and a second bevel gear; the power source is fixedly connected with the shell; the power source output shaft is connected with one end of a crankshaft, and the crankshaft is rotationally connected with the shell; one end of the connecting rod is rotatably connected with the crankshaft journal, and the other end of the connecting rod is hinged with the punch; a slide way is arranged in the shell, and the punch is in sliding fit with the slide way; one end of the crankshaft, which is far away from the power source, is connected with a first bevel gear, a second bevel gear is rotationally connected with the rack, the shape of the first bevel gear is the same as that of the second bevel gear, and the first bevel gear is meshed with the second bevel gear; the second bevel gear is coaxially connected with a rotating shaft, the rotating shaft is coaxially connected with an incomplete gear, a complete gear is rotatably connected to the rack, and the incomplete gear is meshed with the complete gear; the diameters of the incomplete gear and the complete gear are the same, and the number of teeth of the incomplete gear is one fourth of the number of teeth of the complete gear; the complete gear is coaxially and fixedly connected with a connecting shaft, the connecting shaft is coaxially and fixedly connected with a turntable, and the turntable is in running fit with the shell; the upper end face of the rotary table is provided with four concave cavities, the four concave cavities are evenly arranged along the circumferential direction of the rotary table, the four concave cavities are internally connected with the die, and the punch and one of the concave cavities are in the same vertical direction.
The basic scheme has the following beneficial effects:
1. in the scheme, the power source drives the crankshaft to rotate, and the two ends of the connecting rod are respectively connected with the crankshaft journal and the punch, so that the punch is driven to reciprocate up and down once every time the crankshaft rotates for a circle, the shell is punched, automatic operation is realized, and the working efficiency is improved.
2. The crankshaft is coaxially connected with a first bevel gear, the crankshaft can drive the incomplete gear to rotate through the first bevel gear and a second bevel gear while rotating, the incomplete gear drives the complete gear to rotate for a quarter of a circle every time the incomplete gear rotates for a circle, at the moment, one of the cavities is located below the slide, and the punch can move downwards along the slide to realize the punching operation on the shell. Therefore, the machine shell does not need to be placed, and potential safety hazards are avoided.
The device further comprises a limiting block, wherein a through hole is formed in the center of the limiting block; the connecting shaft penetrates through the through hole and is in running fit with the limiting block; four grooves are uniformly formed in the circumferential direction of the connecting shaft, an elastic part and a rigid ball are arranged in each groove, and two ends of the elastic part are respectively connected with the bottom end of each groove and the rigid ball; the inner wall of the through hole is provided with an arc-shaped groove, and the rigid ball can be positioned in the arc-shaped groove. When the incomplete gear rotates and engages with the complete gear, the incomplete gear may drive the complete gear to rotate. When the incomplete gear is not meshed with the complete gear, the complete gear can still rotate under the inertia effect, so that the punch can cause deviation in punching. After the limiting blocks are arranged, in an initial state, the rigid balls are respectively positioned in the grooves and the arc-shaped grooves under the action of the elastic pieces to limit the limiting blocks and the connecting shaft, and the limiting blocks and the connecting shaft are prevented from rotating relatively. When the incomplete gear is meshed with the complete gear, the incomplete gear drives the complete gear to rotate, at the moment, the rigid ball is extruded to enter the groove, the connecting shaft rotates to further drive the turntable to rotate, and the shell to be punched rotates to the lower end of the punch. When the incomplete gear is not meshed with the complete gear, the groove rotates to the arc-shaped groove, the elastic piece restores to the original shape, the rigid ball is extruded into the arc-shaped groove, the rigid ball limits the connecting shaft, and the connecting shaft is prevented from rotating continuously.
Further, still include the feed structure, the feed structure includes feedstock channel and connecting rod, feedstock channel and casing rigid coupling, feedstock channel one end is the discharge gate, the discharge gate is located the top of one of them cavity, the connecting rod middle part is articulated with the casing, the connecting rod is equipped with the torsional spring with the articulated department of casing, connecting rod one end is equipped with the baffle, pivot coaxial coupling has the cam, the cam can offset with the connecting rod other end. The baffle is located discharge gate department, has one to block the effect to the casing, avoids the casing to fall down from the discharge gate. When incomplete gear rotation and then punch a hole to the casing, also along with incomplete gear rotation with incomplete gear coaxial coupling's cam, the cam can offset with the connecting rod during rotation, drives the connecting rod and rotates along the articulated department of connecting rod and casing, and the torsional spring energy storage this moment, baffle leave the discharge gate, and the casing falls down from the discharge gate and enters into in the cavity. After the cam wheel passes, the connecting rod returns to the initial position again under the effect of the torsion spring, and the baffle continues to stop the machine shell from falling down from the discharge hole. Therefore, automatic feeding can be realized, and the effect of continuous punching is achieved.
Further, be equipped with vertical inlet pipe between discharge gate and cavity, the inlet pipe can play a direction and spacing effect, avoids the direction deviation to appear that the casing dropped.
Furthermore, the elastic piece is a spring which is cheap and easy to obtain.
Drawings
FIG. 1 is a front view of a housing processing press according to an embodiment of the present invention;
FIG. 2 is a top view of the turntable;
FIG. 3 is a sectional view of the connection shaft and the stopper;
fig. 4 is a schematic diagram of a feed structure.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a frame 1, a motor 2, a crankshaft 3, a crankshaft journal 4, a first bevel gear 5, a second bevel gear 6, a connecting rod 7, a slide way 8, a punch 9, a rotating shaft 10, an incomplete gear 11, a complete gear 12, a rotating disc 13, a connecting shaft 14, a limiting block 15, a concave cavity 16, a spring 17, a steel ball 18, an arc-shaped groove 19, a groove 20, a feeding channel 21, a discharging hole 22, a baffle plate 23, a connecting rod 24 and a cam 25.
The embodiment is basically as shown in the attached figure 1: a machine shell machining punch comprises a machine frame 1, a shell, a punch 9, a power source, a crankshaft 3, a connecting rod 7, a first bevel gear 5 and a second bevel gear 6. The frame 1 is fixedly connected with the shell. The power supply adopts motor 2 in this scheme, and motor 2 fixes on shells inner wall. An output shaft of the motor 2 is connected with the right end of a crankshaft 3, and the crankshaft 3 is rotationally connected with the shell; the upper end of the connecting rod 7 is rotationally connected with the crankshaft journal 4, and the other end of the connecting rod 7 is hinged with the punch 9; a slide way 8 is arranged in the shell, and a punch 9 is positioned in the slide way 8 and is in sliding fit with the slide way 8; the left end of the crankshaft 3 is connected with a first bevel gear 5, and a second bevel gear 6 is rotationally connected with the shell. The first bevel gear 5 and the second bevel gear 6 are the same in shape, and the first bevel gear 5 is meshed with the second bevel gear 6; the second bevel gear 6 is coaxially connected with a rotating shaft 10, the rotating shaft 10 is coaxially connected with an incomplete gear 11, a complete gear 12 is rotatably connected to the frame 1, and the incomplete gear 11 is meshed with the complete gear 12. The diameter of the incomplete gear 11 is the same as that of the complete gear 12, and the number of teeth of the incomplete gear 11 is one fourth of that of the complete gear 12. The complete gear 12 is coaxially and fixedly connected with a connecting shaft 14, the connecting shaft 14 is coaxially and fixedly connected with a rotating disc 13, and the rotating disc 13 is positioned above the complete gear. As shown in fig. 2, the turntable 13 is rotationally engaged with the housing; four cavities 16 are arranged on the upper end face of the rotary table 13, the four cavities 16 are evenly arranged along the circumferential direction of the rotary table 13, dies are connected into the four cavities 16, and the punch 9 is located right above one of the cavities 16.
As shown in fig. 3, the present scheme further includes a limiting block 15, and the limiting block 15 is fixedly connected to the housing. A through hole is formed in the center of the limiting block 15; the connecting shaft 14 penetrates through the through hole and is in running fit with the limiting block 15; four grooves 20 are uniformly arranged on the connecting shaft 14 in the circumferential direction, and an elastic part and a rigid ball are arranged in each groove 20, in this embodiment, the elastic part is a spring 17, and the rigid ball is a steel ball 18. Two ends of the spring 17 are respectively connected with the bottom end of the groove 20 and the steel ball 18; the inner wall of the through hole is provided with an arc-shaped groove 19, the steel ball 18 can be positioned in the arc-shaped groove 19, and the volume of the steel ball 18 positioned in the arc-shaped groove 19 is less than one half of the volume of the steel ball 18.
The specific implementation process is as follows: the shell to be punched is placed in the dies in the four cavities 16 respectively, the motor 2 is started, the motor 2 rotates and drives the crankshaft 3 to rotate, the upper end of the connecting rod 7 is rotatably connected with the crankshaft journal 4, and the other end of the connecting rod 7 is hinged with the punch 9, so that the punch 9 is driven to reciprocate up and down by the connecting rod 7 when the crankshaft 3 rotates. The slide way 8 can limit the sliding of the punch 9. The crankshaft 3 is coaxially connected with a first bevel gear 5, and the first bevel gear 5 is meshed with a second bevel gear 6, so that the first bevel gear 5 can drive the second bevel gear 6 to rotate when rotating. The incomplete gear 11 fixed to the rotary shaft 10 coaxially with the second bevel gear 6 also rotates. Since the first bevel gear 5 and the second bevel gear 6 have the same shape, the first bevel gear 5 and the second bevel gear 6 have the same rotational speed, and the incomplete gear 11 has the same rotational speed as the crankshaft 3. When the incomplete gear 11 is meshed with the complete gear 12, the incomplete gear 11 can drive the complete gear 12 to rotate. The diameter of the incomplete gear 11 is the same as that of the complete gear 12, and the number of teeth of the incomplete gear 11 is one fourth of that of the complete gear 12, so that the incomplete gear 11 rotates one circle, the complete gear 12 rotates one quarter of a circle, and the rotating disk 13 coaxially connected with the complete gear 12 also rotates one quarter of a circle. When the crankshaft 3 drives the punch 9 to move downwards, the incomplete gear 11 is not meshed with the complete gear 12, the rotating disc 13 is not rotated, one of the cavities 16 is positioned right below the punch 9, and the punch 9 can punch a shell positioned in the cavity 16. When the punch 9 continues to move upwards, the incomplete gear 11 is meshed with the complete gear 12, the rotary disc 13 is driven to rotate for a quarter of a circle, the other cavity 16 rotates to the position below the punch 9, and the punch 9 continues to punch the shell.
In an initial state, the steel ball 18 is respectively positioned in the groove 20 and the arc-shaped groove 19 under the action of the spring 17 to limit the limiting block 15 and the connecting shaft 14, so that the limiting block 15 and the connecting shaft 14 are prevented from moving relatively. When the incomplete gear 11 is meshed with the complete gear 12, the incomplete gear 11 drives the complete gear 12 to rotate, at the moment, the steel ball 18 is extruded to enter the groove 20, the connecting shaft 14 rotates, the rotating disc 13 is further driven to rotate, and the machine shell to be punched is rotated to the lower end of the punch 9. When the incomplete gear 11 is not meshed with the complete gear 12, the groove 20 rotates to the arc-shaped groove 19, the spring 17 recovers to the original shape, the steel ball 18 is extruded into the arc-shaped groove 19, the connecting shaft 14 is limited through the steel ball 18, and the connecting shaft 14 is prevented from rotating continuously.
As shown in fig. 4, in this scheme, still include the feeding structure, the feeding structure includes feedstock channel 21 and connecting rod 24, feedstock channel 21 and casing rigid coupling, feedstock channel 21 one end is discharge gate 22, discharge gate 22 is located the top of one of them cavity 16, connecting rod 24 middle part is articulated with the casing, connecting rod 24 is equipped with the torsional spring with casing articulated department, connecting rod 24 one end is equipped with baffle 23, pivot 10 coaxial coupling has cam 25, cam 25 can offset with the connecting rod 24 other end. The baffle is located the discharge gate department, has a barrier effect to the casing, avoids the casing to fall from discharge gate 22. When incomplete gear 11 rotates and then punches a hole to the casing, cam 25 with incomplete gear 11 coaxial coupling also rotates along with incomplete gear 11, and cam 25 can offset with connecting rod 24 when rotating, drives connecting rod 24 and rotates along the articulated department of connecting rod 24 and casing, and the torsional spring energy storage this moment, baffle 23 leave discharge gate 22, and the casing falls down from discharge gate 22 and enters into in the cavity 16. When the cam 25 rotates, the connecting rod 24 returns to the initial position under the action of the torsion spring, and the baffle 23 continues to block the casing from falling from the discharge port 22. Therefore, automatic operation can be realized, and the effect of continuous punching is achieved. A vertical feed pipe (not shown) is arranged between the discharge port 22 and the cavity 16, and the feed pipe can play a role in guiding and limiting, so that the deviation of the falling direction of the machine shell is avoided.
The feeding structure also comprises a rotating plate (not shown in the figure), and the lower end of the rotating plate is hinged with the rack. The side wall of the feeding channel is provided with a sliding groove, a sliding block is connected in the sliding groove in a sliding mode, the sliding block can stretch into the feeding channel, one end, close to the feeding channel, of the sliding block is an inclined plane, and the inclined plane end of the sliding block can be in contact with the shell in the feeding channel. The other end of the sliding block is hinged with the rotating plate. The rotating plate is provided with an arc-shaped sliding groove, the connecting rod is provided with a supporting rod, and the supporting rod extends into the arc-shaped sliding groove and is in sliding fit with the arc-shaped sliding groove. When the connecting rod rotates and drives the baffle to leave the discharge hole, the supporting rod of the connecting rod slides in the arc-shaped sliding groove and drives the sliding block to slide out of the feeding channel. When the connecting rod rotates towards the direction of the feeding channel, the supporting rod can firstly slide along the arc-shaped sliding groove and starts to drive the rotating plate to rotate after knowing that the supporting rod is contacted with the wall of the arc-shaped sliding groove. When the rotating plate rotates towards the direction of the feeding channel, the sliding block slides into the feeding channel again, and the inclined end of the sliding block is contacted with the casing to push the casing towards the direction of the discharging port. Because the setting of arc spout, the removal of baffle and slider has time difference, so when the slider promoted the casing, the baffle has arrived discharge gate department, has one to the casing and stops the effect, avoids the slider directly to push out the discharge gate with the casing.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (4)
1. A machine shell processing punch comprises a machine frame, a shell, a die and a punch, wherein the machine frame is fixedly connected with the shell; the power source is fixedly connected with the shell; the power source output shaft is connected with one end of a crankshaft, and the crankshaft is rotationally connected with the shell; one end of the connecting rod is rotatably connected with the crankshaft journal, and the other end of the connecting rod is hinged with the punch; a slide way is arranged in the shell, and the punch is in sliding fit with the slide way; one end of the crankshaft, which is far away from the power source, is connected with a first bevel gear, a second bevel gear is rotationally connected with the rack, the shape of the first bevel gear is the same as that of the second bevel gear, and the first bevel gear is meshed with the second bevel gear; the second bevel gear is coaxially connected with a rotating shaft, the rotating shaft is coaxially connected with an incomplete gear, a complete gear is rotatably connected to the rack, and the incomplete gear can be meshed with the complete gear; the diameters of the incomplete gear and the complete gear are the same, and the number of teeth of the incomplete gear is one fourth of the number of teeth of the complete gear; the complete gear is coaxially and fixedly connected with a connecting shaft, the connecting shaft is coaxially and fixedly connected with a turntable, and the turntable is in running fit with the shell; the upper end face of the rotary table is provided with four concave cavities which are uniformly arranged along the circumferential direction of the rotary table, the four concave cavities are connected with the die, and the punch and one of the concave cavities are in the same vertical direction; the feeding structure comprises a feeding channel and a connecting rod, the feeding channel is fixedly connected with the shell, one end of the feeding channel is a discharge port, the discharge port is positioned above one of the cavities, the middle part of the connecting rod is hinged with the shell, a torsional spring is arranged at the position where the connecting rod is hinged with the shell, a baffle is arranged at one end of the connecting rod, a cam is coaxially connected with the rotating shaft, and the cam can abut against the other end of the connecting rod; the feeding structure also comprises a rotating plate, and the lower end of the rotating plate is hinged with the rack; a sliding groove is formed in the side wall of the feeding channel, a sliding block is connected in the sliding groove in a sliding mode and can extend into the feeding channel, one end, close to the feeding channel, of the sliding block is an inclined surface, and the inclined surface end of the sliding block can be in contact with a machine shell in the feeding channel; the other end of the sliding block is hinged with the rotating plate; the rotating plate is provided with an arc-shaped sliding groove, the connecting rod is provided with a supporting rod, and the supporting rod extends into the arc-shaped sliding groove and is in sliding fit with the arc-shaped sliding groove.
2. The housing machining punch of claim 1, wherein: the device also comprises a limiting block, wherein a through hole is formed in the center of the limiting block; the connecting shaft penetrates through the through hole and is in running fit with the limiting block; four grooves are uniformly formed in the circumferential direction of the connecting shaft, an elastic part and a rigid ball are arranged in each groove, and two ends of the elastic part are respectively connected with the bottom end of each groove and the rigid ball; the inner wall of the through hole is provided with an arc-shaped groove, and the rigid ball can be positioned in the arc-shaped groove.
3. The housing processing press according to claim 2, wherein: and a vertical feeding pipe is arranged between the discharge port and the concave cavity.
4. The housing machining punch of claim 3, wherein: the elastic piece is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640795.7A CN109604431B (en) | 2018-12-29 | 2018-12-29 | Machine shell processing punch press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640795.7A CN109604431B (en) | 2018-12-29 | 2018-12-29 | Machine shell processing punch press |
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| Publication Number | Publication Date |
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| CN109604431A CN109604431A (en) | 2019-04-12 |
| CN109604431B true CN109604431B (en) | 2020-06-02 |
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| CN201811640795.7A Active CN109604431B (en) | 2018-12-29 | 2018-12-29 | Machine shell processing punch press |
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| CN109940226A (en) * | 2019-04-24 | 2019-06-28 | 郑州瀚琳机械制造有限公司 | A kind of processing unit (plant) for glued surfaces sine wave trough in crankshaft torsion vibration absorber |
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| CN110508663B (en) * | 2019-07-26 | 2020-12-04 | 温岭市汇强机电股份有限公司 | Punching sheet punching equipment |
| CN110479855B (en) * | 2019-07-26 | 2020-12-04 | 温岭市汇强机电股份有限公司 | Punching sheet punching equipment |
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| DE37005C (en) * | C. W. HECKMANN JR. und C. H. BRINCK in Barmen | Automatic plate feeder for embossing machines, knurling machines, tractors and punching machines | ||
| US2394836A (en) * | 1944-04-04 | 1946-02-12 | Remington Arms Co Inc | Feed mechanism |
| CN2279260Y (en) * | 1996-12-11 | 1998-04-22 | 曹锐 | Shaped coking coal pressure forming machine |
| CN102172731A (en) * | 2011-01-04 | 2011-09-07 | 无锡市金杨新型电源有限公司 | Automatic discharging device for punching machine |
| CN203419202U (en) * | 2013-07-19 | 2014-02-05 | 潘延 | Shaft lock structure |
| CN204473049U (en) * | 2015-03-10 | 2015-07-15 | 河北小海豚童车有限公司 | Exempt from the foot-operated of instrument dismounting |
| CN205072393U (en) * | 2015-09-15 | 2016-03-09 | 郑州宇通客车股份有限公司 | Turntable and use car of this turntable |
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| CN106623565B (en) * | 2016-12-12 | 2018-05-15 | 泉州台商投资区铭源机械设备有限公司 | A kind of punching machine with pinpoint accuracy |
| CN107497945A (en) * | 2017-07-26 | 2017-12-22 | 深圳联达钮扣有限公司 | The I-shaped button multistation kludge of this device of I-shaped button riveting set and application |
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| CN107374308A (en) * | 2017-09-18 | 2017-11-24 | 河南应用技术职业学院 | A kind of domestic portable Corers for Chinese date |
| CN108246910B (en) * | 2018-01-17 | 2020-06-02 | 宁波市科斯顿精工机械有限公司 | Punch press capable of automatically feeding |
| CN108188305B (en) * | 2018-01-17 | 2020-06-02 | 宁波市科斯顿精工机械有限公司 | Safe type punch press |
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| CN109604431A (en) | 2019-04-12 |
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