CN111229899A - Color steel tile plugging one-time forming stamping device and operation method thereof - Google Patents
Color steel tile plugging one-time forming stamping device and operation method thereof Download PDFInfo
- Publication number
- CN111229899A CN111229899A CN202010166071.4A CN202010166071A CN111229899A CN 111229899 A CN111229899 A CN 111229899A CN 202010166071 A CN202010166071 A CN 202010166071A CN 111229899 A CN111229899 A CN 111229899A
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- Prior art keywords
- sleeve
- clamping sleeve
- sliding plate
- spring
- air cylinder
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Classifications
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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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
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Abstract
The invention discloses a color steel tile plugging one-step forming stamping device and an operation method thereof, which solve the problem that a workpiece after stamping forming is inconvenient to take out when a color steel tile plug is stamped, and solve the problems that the stamping device is large in vibration and damages the ground when in work. The automatic clamping device comprises a supporting table, wherein a clamping sleeve is connected in the supporting table in a sliding mode, a connecting seat is fixedly connected to the outer side of the clamping sleeve, a guide hole is formed in the clamping sleeve, a guide rod is connected in the guide hole in a sliding mode, a sliding plate is connected in the clamping sleeve in a sliding mode, a supporting block is fixedly connected to the lower end of the sliding plate, a guide rod is fixedly connected to the lower end of the sliding plate, a first spring is sleeved on the outer side of the guide rod, the upper end of the first spring is in contact with the lower end of the sliding plate, the lower end of the first spring is in contact with the bottom of the inner side of the clamping sleeve, a blank is connected in.
Description
Technical Field
The invention relates to a color steel tile plugging one-step forming stamping device, in particular to a color steel tile plugging one-step forming stamping device and an operation method thereof.
Background
The color steel tile, also called color pressed tile, is a pressed board made of color coated steel plate and through rolling and cold bending into various wave forms. The composite material is suitable for roof, wall and inner and outer wall decoration of industrial and civil buildings, warehouses, special buildings and large-span steel structure houses, has the characteristics of light weight, high strength, rich color, convenient and quick construction, earthquake resistance, fire resistance, rain resistance, long service life, maintenance-free property and the like, and is widely popularized and applied.
When the color steel tile is installed, the color steel tile plug is required to be arranged to plug the end part of the color steel tile, so that birds are prevented from nesting. At present, when the color steel tile is plugged, a stamping device is mostly adopted to punch and form a blank. However, the existing punching device is inconvenient in workpiece taking, and the punching device is large in vibration during working and also has damage to the ground. Accordingly, there is a need for improvements in the art.
Disclosure of Invention
The invention aims to provide a color steel tile plugging one-step forming stamping device and an operation method thereof, which solve the problem that a workpiece after being stamped is inconvenient to take out when a color steel tile plug is stamped and formed, and solve the problems that the stamping device is large in vibration and damages the ground when in work.
The purpose of the invention can be realized by the following technical scheme:
a stamping device for one-step forming of color steel tile plugging comprises a supporting table, wherein a clamping sleeve is connected in the supporting table in a sliding manner, a connecting seat is fixedly connected to the outer side of the clamping sleeve, a guide hole is formed in the clamping sleeve, a guide rod is connected in the guide hole in a sliding manner, a sliding plate is connected in the clamping sleeve in a sliding manner, a supporting block is fixedly connected to the lower end of the sliding plate, a guide rod is fixedly connected to the lower end of the sliding plate, a first spring is sleeved on the outer side of the guide rod, the upper end of the first spring is in contact with the lower end of the sliding plate, the lower end of the first spring is in contact with the bottom of the inner side of the clamping sleeve, a blank is connected in the clamping;
the upper end of the supporting table is fixedly connected with a supporting frame, the upper end of the supporting frame is fixedly connected with a supporting plate, the upper end of the supporting plate is fixedly provided with an air cylinder, the lower end of an air cylinder rod of the air cylinder is provided with a connecting sleeve, a second bolt is slidably sleeved in the connecting sleeve and is connected with the air cylinder rod through threads, the lower end of the connecting sleeve is fixedly connected with a die holder, and the lower end of the die holder is provided with a bulge;
the lower extreme fixedly connected with sleeve of brace table, telescopic internally mounted has the second spring, the upper end and the lower extreme contact of brace table of second spring, the lower extreme and the support column contact of second spring, sliding connection has the support column in the sleeve, the spout has been seted up on the surface of support column, sliding connection has the banking pin in the spout, the banking pin passes through threaded connection with the sleeve, the lower extreme fixedly connected with base of support column, the lower extreme bonding of base has the rubber pad.
Preferably, a through groove is formed in the middle of the supporting table, and a clamping sleeve is connected in the through groove in a sliding mode.
Preferably, the number of the connecting seats is two, the two connecting seats are symmetrically distributed on two sides of the clamping sleeve, a first bolt is sleeved in the connecting seats in a sliding mode and is connected with the supporting table through threads.
Preferably, the number of the guide rods is two, and the bottoms of the two guide rods are both connected with limiting rings through threads.
Preferably, the surface of the support frame is fixedly provided with a switch, and the switch and the cylinder are connected with an external power supply in series through a wire.
Preferably, the front end of the supporting plate is provided with a notch, and a cylinder rod is connected in the notch in a sliding manner.
Preferably, the number of the protrusions is three, and the three protrusions and the die holder are of an integrated structure.
An operation method of a color steel tile plugging one-step forming stamping device comprises the following specific steps:
the method comprises the following steps: when the color steel tile plug needs to be processed, a blank is placed in the clamping sleeve, then a starting switch of a switch is pressed, the air cylinder works, the air cylinder drives the air cylinder rod to move downwards, the air cylinder rod drives the connecting sleeve to move downwards, the connecting sleeve drives the die holder to move downwards, and the die holder drives the protrusion to move downwards, so that the die holder and the protrusion perform stamping work on the blank;
step two: when the blank moves downwards in the clamping sleeve, the sliding plate can be driven to move downwards, the sliding plate drives the guide rod to move downwards, the sliding plate extrudes the first spring, the sliding plate can also drive the supporting block to move downwards, and when the supporting block contacts the bottom of the inner side of the clamping sleeve, the limiting position is reached, and at the moment, the die holder and the bulge continue to perform punch forming on the blank;
step three: after one-time stamping is finished, a reset button of the switch is started, the cylinder drives the cylinder rod to reset, the cylinder rod drives the connecting sleeve to reset, the connecting sleeve drives the die holder to reset, the die holder drives the protrusion to reset, the sliding plate resets under the action of the compression elasticity of the first spring, the sliding plate drives the blank to reset, the blank extends out of the clamping sleeve, and the workpiece taking is convenient;
step four: when in stamping process, the second spring in the sleeve has the effect of buffering shock attenuation for the vibrations of brace table reduce, and the rubber pad through the design of base bottom can protect ground moreover, prevents that ground is impaired.
The invention has the beneficial effects that: according to the invention, the special clamping sleeve is designed to clamp the blank, the sliding plate is designed in the clamping sleeve, the supporting block is designed at the bottom of the sliding plate, the guide rod is designed at the lower end of the sliding plate, and the first spring is installed at the outer side of the guide rod, so that the blank can automatically reset after being subjected to punch forming by utilizing the compression elasticity of the first spring and can extend out of the clamping sleeve, the workpiece taking operation is convenient, and the working efficiency can be improved;
through the lower extreme design sleeve at a supporting bench, telescopic internally mounted second spring, sleeve internally mounted support column, the bottom design base of support column, the lower extreme design rubber pad of base can be protected ground, and equipment during operation moreover, the design of second spring can effectively reduce vibrations, avoids equipment vibrations too big.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention;
FIG. 4 is a top view of the clamping sleeve of FIG. 1 in accordance with the present invention;
FIG. 5 is a bottom view of the glide plate of FIG. 1 of the present invention;
FIG. 6 is a bottom view of the die holder of FIG. 1 in accordance with the present invention.
In the figure: 1. a support table; 2. a through groove; 3. installing a jacket; 4. a connecting seat; 5. a first bolt; 6. a guide hole; 7. a slide plate; 8. a support block; 9. a guide bar; 10. a first spring; 11. a limiting ring; 12. a blank; 13. a support frame; 14. a switch; 15. a support plate; 16. a notch; 17. a cylinder; 18. a cylinder rod; 19. connecting sleeves; 20. a second bolt; 21. a die holder; 22. a protrusion; 23. a sleeve; 24. a second spring; 25. a support pillar; 26. a chute; 27. a base; 28. a rubber pad; 29. and a limit pin.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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. 1-6, a color steel tile plugging one-step forming stamping device comprises a supporting table 1, a clamping sleeve 3 is connected in the supporting table 1 in a sliding manner, a connecting seat 4 is fixedly connected to the outer side of the clamping sleeve 3, a guide hole 6 is formed in the clamping sleeve 3, a guide rod 9 is connected in the guide hole 6 in the sliding manner, a sliding plate 7 is connected in the clamping sleeve 3 in a sliding manner, a supporting block 8 is fixedly connected to the lower end of the sliding plate 7, a guide rod 9 is fixedly connected to the lower end of the sliding plate 7, a first spring 10 is sleeved on the outer side of the guide rod 9, the upper end of the first spring 10 is in contact with the lower end of the sliding plate 7, the lower end of the first spring 10 is in contact with the bottom of the inner side of the clamping sleeve 3, a blank 12;
the upper end of the supporting table 1 is fixedly connected with a supporting frame 13, the upper end of the supporting frame 13 is fixedly connected with a supporting plate 15, the upper end of the supporting plate 15 is fixedly provided with an air cylinder 17, the lower end of an air cylinder rod 18 of the air cylinder 17 is provided with a connecting sleeve 19, a second bolt 20 is slidably sleeved in the connecting sleeve 19, the second bolt 20 is in threaded connection with the air cylinder rod 18, the lower end of the connecting sleeve 19 is fixedly connected with a die holder 21, and the lower end of the die holder 21 is provided;
brace table 1's lower extreme fixedly connected with sleeve 23, the internally mounted of sleeve 23 has second spring 24, the upper end of second spring 24 and the lower extreme contact of brace table 1, the lower extreme and the support column 25 contact of second spring 24, sliding connection has support column 25 in sleeve 23, spout 26 has been seted up on support column 25's surface, sliding connection has stop pin 29 in spout 26, stop pin 29 passes through threaded connection with sleeve 23, the lower extreme fixedly connected with base 27 of support column 25, base 27's lower extreme bonding has rubber pad 28.
The middle part of the supporting table 1 is provided with a through groove 2, the through groove 2 is connected with a clamping sleeve 3 in a sliding manner, the design of the through groove 2 provides an installation space for the clamping sleeve 3, the number of the connecting seats 4 is two, the two connecting seats 4 are symmetrically distributed at the two sides of the clamping sleeve 3, the connecting seats 4 are sleeved with a first bolt 5 in a sliding manner, the first bolt 5 is in threaded connection with the supporting table 1, the connecting seats 4 can be fixed through the first bolt 5, thereby the clamping sleeve 3 is fixed, the number of the guide rods 9 is two, the bottoms of the two guide rods 9 are both connected with a limiting ring 11 through threads, the guide rods 9 can be prevented from leaving the guide holes 6 through the design of the limiting ring 11, a switch 14 is fixedly arranged on the surface of the supporting frame 13, the switch 14 and the cylinder 17 are connected with an external power supply in series through leads, the switch 14 is provided with a switch for the cylinder, the air cylinder rod 18 is connected in the notch 16 in a sliding mode, the notch 16 is designed to provide a moving space for the air cylinder rod 18, the number of the protrusions 22 is three, the three protrusions 22 and the die holder 21 are of an integrated structure, and the protrusions 22 are designed to punch grooves in the blank 12.
An operation method of a color steel tile plugging one-step forming stamping device comprises the following specific steps:
the method comprises the following steps: when the color steel tile is required to be processed for plugging, the blank 12 is placed in the clamping sleeve 3, then a starting switch of the switch 14 is pressed, the air cylinder 17 works, the air cylinder 17 drives the air cylinder rod 18 to move downwards, the air cylinder rod 18 drives the connecting sleeve 19 to move downwards, the connecting sleeve 19 drives the die holder 21 to move downwards, and the die holder 21 drives the protrusion 22 to move downwards, so that the die holder 21 and the protrusion 22 perform stamping work on the blank 12;
step two: when the blank 12 moves downwards in the clamping sleeve 3, the sliding plate 7 can be driven to move downwards, the sliding plate 7 drives the guide rod 9 to move downwards, the sliding plate 7 extrudes the first spring 10, the sliding plate 7 can also drive the supporting block 8 to move downwards, when the supporting block 8 contacts the bottom of the inner side of the clamping sleeve 3, the limiting position is reached, and at the moment, the die holder 21 and the bulge 22 continue to punch and form the blank 12;
step three: after one-time stamping is finished, a reset button of the switch 14 is started, the air cylinder 17 drives the air cylinder rod 18 to reset, the air cylinder rod 18 drives the connecting sleeve 19 to reset, the connecting sleeve 19 drives the die holder 21 to reset, the die holder 21 drives the protrusion 22 to reset, the blank 12 is separated, the sliding plate 7 resets under the action of the compression elasticity of the first spring 10, the sliding plate 7 drives the blank 12 to reset, so that the blank 12 extends out of the clamping sleeve 3, and the taking of the blank is convenient;
step four: when in the punching process, the second spring 24 in the sleeve 23 has the function of buffering and damping, so that the vibration of the supporting table 1 is reduced, and the ground can be protected by the rubber pad 28 designed at the bottom of the base 27, and the ground is prevented from being damaged.
The invention has the beneficial effects that: according to the invention, the blank 12 is clamped by designing the special clamping sleeve 3, the sliding plate 7 is designed in the clamping sleeve 3, the supporting block 8 is designed at the bottom of the sliding plate 7, the guide rod 9 is designed at the lower end of the sliding plate 7, and the first spring 10 is installed at the outer side of the guide rod 9, so that the blank 12 can be automatically reset after being subjected to punch forming by utilizing the compression elasticity of the first spring 10 during stamping and can extend out of the clamping sleeve 3, the workpiece taking work is facilitated, and the working efficiency can be improved;
through the lower extreme design sleeve 23 at a supporting bench 1, the internally mounted second spring 24 of sleeve 23, sleeve 23 internally mounted support column 25, the bottom design base 27 of support column 25, the lower extreme design rubber pad 28 of base 27 can protect ground, and equipment during operation moreover, the design of second spring 24 can effectively reduce vibrations, avoids equipment vibrations too big.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a various steel tile shutoff one shot forming stamping device, includes brace table (1), its characterized in that: a clamping sleeve (3) is connected in the supporting platform (1) in a sliding way, a connecting seat (4) is fixedly connected with the outer side of the clamping sleeve (3), a guide hole (6) is arranged in the clamping sleeve (3), a guide rod (9) is connected in the guide hole (6) in a sliding way, a sliding plate (7) is connected inside the clamping sleeve (3) in a sliding manner, the lower end of the sliding plate (7) is fixedly connected with a supporting block (8), the lower end of the sliding plate (7) is fixedly connected with a guide rod (9), the outer side of the guide rod (9) is sleeved with a first spring (10), the upper end of the first spring (10) is contacted with the lower end of the sliding plate (7), the lower end of the first spring (10) is contacted with the bottom of the inner side of the clamping sleeve (3), a blank (12) is connected in the clamping sleeve (3) in a sliding manner, and the lower end of the blank (12) is in contact with the upper end of the sliding plate (7);
the upper end of the supporting table (1) is fixedly connected with a supporting frame (13), the upper end of the supporting frame (13) is fixedly connected with a supporting plate (15), the upper end of the supporting plate (15) is fixedly provided with an air cylinder (17), the lower end of an air cylinder rod (18) of the air cylinder (17) is provided with a connecting sleeve (19), a second bolt (20) is sleeved in the connecting sleeve (19) in a sliding mode, the second bolt (20) is connected with the air cylinder rod (18) through threads, the lower end of the connecting sleeve (19) is fixedly connected with a die holder (21), and the lower end of the die holder (21) is provided with a bulge (22;
the lower extreme fixedly connected with sleeve (23) of propping up supporting bench (1), the internally mounted of sleeve (23) has second spring (24), the upper end of second spring (24) and the lower extreme contact of propping up supporting bench (1), the lower extreme and the support column (25) contact of second spring (24), sliding connection has support column (25) in sleeve (23), spout (26) have been seted up on the surface of support column (25), sliding connection has stop pin (29) in spout (26), stop pin (29) and sleeve (23) pass through threaded connection, the lower extreme fixedly connected with base (27) of support column (25), the lower extreme bonding of base (27) has rubber pad (28).
2. The color steel tile plugging one-step forming stamping device according to claim 1, wherein a through groove (2) is formed in the middle of the supporting table (1), and a clamping sleeve (3) is slidably connected in the through groove (2).
3. The color steel tile plugging one-step forming stamping device according to claim 1, wherein the number of the connecting seats (4) is two, the two connecting seats (4) are symmetrically distributed on two sides of the clamping sleeve (3), a first bolt (5) is sleeved in the connecting seats (4) in a sliding mode, and the first bolt (5) is connected with the supporting table (1) through threads.
4. The color steel tile plugging one-step forming stamping device according to claim 1, wherein the number of the guide rods (9) is two, and the bottoms of the two guide rods (9) are both connected with a limiting ring (11) through threads.
5. The color steel tile plugging one-step forming stamping device according to claim 1, wherein a switch (14) is fixedly mounted on the surface of the support frame (13), and the switch (14) and the cylinder (17) are connected in series with an external power supply through a wire.
6. The color steel tile plugging one-step forming stamping device according to claim 1, wherein a notch (16) is formed in the front end of the supporting plate (15), and a cylinder rod (18) is connected in the notch (16) in a sliding mode.
7. The color steel tile plugging one-step forming stamping device according to claim 1, wherein the number of the protrusions (22) is three, and the three protrusions (22) and the die holder (21) are of an integrated structure.
8. An operation method of a color steel tile plugging one-step forming stamping device is characterized by comprising the following specific steps:
the method comprises the following steps: when the color steel tile is required to be processed for plugging, a blank (12) is placed in the clamping sleeve (3), then a starting switch of the switch (14) is pressed, the air cylinder (17) works, the air cylinder (17) drives the air cylinder rod (18) to move downwards, the air cylinder rod (18) drives the connecting sleeve (19) to move downwards, the connecting sleeve (19) drives the die holder (21) to move downwards, and the die holder (21) drives the protrusion (22) to move downwards, so that the die holder (21) and the protrusion (22) perform stamping work on the blank (12);
step two: when the blank (12) moves downwards in the clamping sleeve (3), the sliding plate (7) can be driven to move downwards, the sliding plate (7) drives the guide rod (9) to move downwards, the sliding plate (7) extrudes the first spring (10), the sliding plate (7) can also drive the supporting block (8) to move downwards, when the supporting block (8) contacts the bottom of the inner side of the clamping sleeve (3), the limiting position is reached, and at the moment, the die holder (21) and the protrusion (22) continue to punch and form the blank (12);
step three: after one-time stamping is finished, a reset button of a switch (14) is started, an air cylinder (17) drives an air cylinder rod (18) to reset, the air cylinder rod (18) drives a connecting sleeve (19) to reset, the connecting sleeve (19) drives a die holder (21) to reset, the die holder (21) drives a protrusion (22) to reset, a blank (12) is separated, a sliding plate (7) resets under the action of compression elasticity of a first spring (10), the sliding plate (7) drives the blank (12) to reset, the blank (12) extends out of a clamping sleeve (3), and taking of a workpiece is facilitated;
step four: when in the stamping process, the second spring (24) in the sleeve (23) has the buffering and damping effects, so that the vibration of the support table (1) is reduced, and the ground can be protected through the rubber pad (28) designed at the bottom of the base (27) to prevent the ground from being damaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166071.4A CN111229899A (en) | 2020-03-11 | 2020-03-11 | Color steel tile plugging one-time forming stamping device and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166071.4A CN111229899A (en) | 2020-03-11 | 2020-03-11 | Color steel tile plugging one-time forming stamping device and operation method thereof |
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| CN111229899A true CN111229899A (en) | 2020-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618175A (en) * | 2020-07-01 | 2020-09-04 | 灵璧县众泰五金有限公司 | Blank letter sorting trimmer after integral shaping |
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2020
- 2020-03-11 CN CN202010166071.4A patent/CN111229899A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618175A (en) * | 2020-07-01 | 2020-09-04 | 灵璧县众泰五金有限公司 | Blank letter sorting trimmer after integral shaping |
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