One-time punching forming device for concentric circular sheets

Abstract

The utility model discloses a one-time punching forming device for concentric circular sheets, which relates to the technical field of circular sheet punching and comprises a base, and a fixing seat is fixedly mounted on the upper surface of the base through bolts. According to the one-time punching forming device for the concentric circular sheets, the top base and the punching base are driven by external punching equipment to move downwards, in the continuous downward moving process, the bottom face of the punching base firstly makes contact with a material plate on the fixing base, and the pressing and fixing effects are achieved during continuous downward pressing; during downward pressing, due to the fact that the center punching cutter and the punching column are connected to the top base, during continuous downward pressing, the center punching cutter conducts center punching on a material plate on the fixing base, after center hole punching, an extrusion plate on the bottom face of the top base which is continuously pressed downwards makes contact with and extrudes a punching plate, and the punching plate drives the circular punching cutter to move downwards; and therefore, the circular punching cutter downwards punches the outer ring of the material plate, and the simultaneous punching effect of the device inside and outside is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circular sheet punching, in particular to a device for one-time punching and forming of concentric circular sheets. Background Art

[0002] The common ways to obtain concentric circular sheet products are cutting (wire cutting or laser cutting) and punching. In the use of wire cutting, first, the inner control of the circular sheet is cut, and then the outer circle is cut. However, the efficiency of cutting concentric circular sheets in this way is relatively low. When processing by punching, conventionally, two stations are used to produce hollow circular sheets. The first station punches the center hole, and the second station punches the outer shape. However, when the circular sheet in the first station is transferred to the second station and punched again, its concentricity is not good, and it is easy to cause the problem of deformation of the concentric circular sheet. Therefore, a punching device that can be formed at one time in one station is needed to ensure the concentricity of the concentric circular sheet product after punching. Summary of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides a device for one-time punching and forming of concentric circular sheets, which has the advantages of one-time forming punching and good concentricity.

[0005] (II) Technical Solutions

[0006] To solve the above technical problems, the utility model provides the following technical solutions: A device for one-time punching and forming of concentric circular sheets, including a base, and a fixed seat is fixedly installed on the upper surface of the base through bolts.

[0007] A hollow is formed in the middle of the upper surface of the fixed seat. Three cylinders arranged in a circular array are fixedly installed inside the hollow. A reverse pushing plate is placed inside the hollow. Three circular holes arranged in a circular array are formed inside the reverse pushing plate, and the three cylinders are respectively inserted into the three circular holes.

[0008] Above the fixed seat, a punching seat is placed. Above the punching seat, a top seat is placed. Guide holes are provided at the four corners of the top seat. Guide columns are fixedly installed at the four corners of the punching seat, and the bottom ends of the four guide columns respectively penetrate through the four guide holes and extend above the top seat. A first spring is sleeved outside the guide column, and the top end of the first spring is fixedly connected to the bottom surface of the top seat. A groove is provided on the upper surface of the punching seat. A connecting column is fixedly installed inside the groove. A punching plate is placed inside the groove. Two connecting holes are provided inside the punching plate, and the top ends of the two connecting columns respectively penetrate through the two connecting holes and extend above the punching plate. A circular punching knife is fixedly installed on the bottom surface of the punching plate. A through hole is provided on the bottom surface of the punching seat. A guide hole is provided in the middle of the punching plate.

[0009] A pressing plate is fixedly installed on the bottom surface of the top seat. A punching column is fixedly installed in the middle of the bottom surface of the pressing plate. The bottom end of the punching column penetrates through the guide hole and the circular punching knife and extends into the circular punching knife. A center punching knife is fixedly installed at the bottom end of the punching column.

[0010] Further, three second springs arranged in an annular array are fixedly installed inside the empty groove. The three second springs are respectively sleeved outside the cylinder, and the top end of each second spring is fixedly connected to the bottom surface of the anti-pushing plate.

[0011] By adopting the above technical solution, when punching the outer circle, the circular punching knife can press the anti-pushing plate to move downward and drive the second spring to compress to generate a resilience force, which can better enable the circular punching knife to perform outer circle punching, and after the punching is completed, the anti-pushing plate is reset under the resilience force of the second spring.

[0012] Further, two third springs are fixedly installed inside the groove. The two third springs are respectively sleeved outside the two connecting columns, and the top end of each third spring is fixedly connected to the bottom surface of the punching plate.

[0013] By adopting the above technical solution, it can better always ensure that the position state of the punching plate remains unchanged during punching until the pressing plate presses the punching plate to make the circular punching knife move downward to perform outer circle punching, and after the punching is completed and reset, the punching plate is reset under the resilience force of the third spring.

[0014] Further, the diameter value of the circular punching knife is smaller than the diameter value of the through hole.

[0015] By adopting the above technical solution, it can better enable the circular punching knife to pass through the through hole and avoid the problem of interference.

[0016] Further, a fixed connecting plate is fixedly installed in the middle of the upper surface of the top seat.

[0017] By adopting the above technical solution, the top seat can be better connected to the external telescopic stamping equipment.

[0018] Furthermore, a discharge chute is provided inside the base.

[0019] By adopting the above technical solution, the central miscellaneous materials can be better exported outwards through the discharge chute.

[0020] Furthermore, a discharge hole is provided in the middle of the fixed seat, and the diameter value of the punching column is equal to the diameter value of the discharge hole.

[0021] By adopting the above technical solution, central hole punching can be better performed. During the punching process, the punching column will push the cut miscellaneous materials downward into the interior of the discharge chute.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the concentric circular sheet one-time punching and forming device has the following beneficial effects:

[0024] In the present utility model, by providing a circular punching knife, during use, the top seat and the punching seat are driven to move downward by an external stamping device. During the continuous downward movement, the bottom surface of the punching seat first contacts the material plate on the fixed seat and plays a role of pressing and fixing during continuous downward pressing, avoiding the problem of the material plate moving during stamping. When pressing downward, since the central punching knife and the punching column are connected to the top seat, during continuous downward pressing, the central punching knife punches the center of the material plate on the fixed seat. The central punching knife and the punching column enter the discharge hole and push the punched central waste downward to the discharge chute and export it. After the central hole is punched, the extrusion plate on the bottom surface of the continuously pressed top seat contacts and presses the punching plate, and the punching plate drives the circular punching knife to move downward, so that the circular punching knife punches the outer ring of the material plate downward, improving the internal and external simultaneous punching effect of the device, and greatly ensuring the concentricity of the circular sheet after punching, being able to avoid the problem of poor concentricity caused by multi-station internal and external ring punching. The cutting edges of the central punching knife and the circular punching knife are both slope-shaped, which can better perform punching processing and reduce the generation of burrs during punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present utility model;

[0026] Figure 2 is a schematic structural diagram of the base of the present utility model;

[0027] Figure 3 is a schematic structural diagram of the punching seat of the present utility model;

[0028] Figure 4 is a schematic structural diagram of the fixed seat of the present utility model;

[0029] Figure 5 Schematic diagram of the top seat structure of the present utility model;

[0030] Figure 6 Schematic diagram of the punching column structure of the present utility model;

[0031] Figure 7 Cross-sectional view of the circular punching knife of the present utility model;

[0032] Figure 8 Schematic diagram of the bottom structure of the punching seat of the present utility model.

[0033] In the figure: 1 - base, 2 - fixed seat, 3 - punching seat, 4 - top seat, 5 - fixed connecting plate, 6 - guide post, 7 - push plate, 8 - discharge chute, 9 - first spring, 10 - connecting column, 11 - groove, 12 - discharge hole, 13 - empty groove, 14 - second spring, 15 - cylinder, 16 - round hole, 17 - guide hole, 18 - connecting hole, 19 - circular punching knife, 20 - punching plate, 21 - extrusion plate, 22 - center punching knife, 23 - punching column, 24 - guide hole, 25 - third spring, 26 - through hole. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0035] Please refer to Figure 1-8 , the present utility model provides a technical solution: a concentric circular sheet one-time punching and forming device, including a base 1, a fixed seat 2 is fixedly installed on the upper surface of the base 1 through bolts, a discharge chute 8 is opened inside the base 1 to better export the central waste through the discharge chute 8, a discharge hole 12 is opened in the middle of the fixed seat 2, and the diameter value of the punching column 23 is equal to the diameter value of the discharge hole 12 to better perform central hole punching. And during the punching process, the punching column 23 will push the cut waste downward into the inside of the discharge chute 8.

[0036] In the middle of the upper surface of the fixed seat 2, an empty groove 13 is provided. Inside the empty groove 13, three cylinders 15 arranged in a circular array are fixedly installed. Inside the empty groove 13, a push-back plate 7 is placed. Inside the push-back plate 7, three circular holes 16 arranged in a circular array are provided. And the three cylinders 15 are respectively inserted into the three circular holes 16. Inside the empty groove 13, three springs two 14 arranged in a circular array are fixedly installed. The three springs two 14 are respectively sleeved outside the cylinders 15. And the top end of each spring two 14 is fixedly connected to the bottom surface of the push-back plate 7. When the outer circle is punched, the circular punching knife 19 can press the push-back plate 7 to move downward and drive the spring two 14 to compress and generate a resilience force, which can better enable the circular punching knife 19 to perform the outer circle punching. And after the punching is completed, the push-back plate 7 is reset under the resilience force of the spring two 14.

[0037] Above the fixed seat 2, a punching seat 3 is placed. Above the punching seat 3, a top seat 4 is placed. In the middle of the upper surface of the top seat 4, a fixed connecting plate 5 is fixedly installed, which can better connect the top seat 4 with the external telescopic stamping equipment. At the four corners of the top seat 4, guide holes 17 are provided. At the four corners of the punching seat 3, guide posts 6 are fixedly installed. And the bottom ends of the four guide posts 6 respectively penetrate through the four guide holes 17 and extend above the top seat 4. Outside the guide posts 6, springs one 9 are sleeved. And the top end of the spring one 9 is fixedly connected to the bottom surface of the top seat 4. On the upper surface of the punching seat 3, a groove 11 is provided. Inside the groove 11, a connecting column 10 is fixedly installed. Inside the groove 11, a punching plate 20 is placed. Inside the punching plate 20, two connecting holes 18 are provided. And the top ends of the two connecting columns 10 respectively penetrate through the two connecting holes 18 and extend above the punching plate 20. Inside the groove 11, two springs three 25 are fixedly installed. And the two springs three 25 are respectively sleeved outside the two connecting columns 10. And the top end of each spring three 25 is fixedly connected to the bottom surface of the punching plate 20, which can better always keep the position state of the punching plate 20 unchanged during punching until the extrusion plate 21 extrudes the punching plate 20 to make the circular punching knife 19 move downward to perform the outer circle punching. And after the punching is completed and reset, the punching plate 20 is reset under the resilience force of the spring three 25. On the bottom surface of the punching plate 20, a circular punching knife 19 is fixedly installed. On the bottom surface of the punching seat 3, a through hole 26 is provided. In the middle of the punching plate 20, a guide hole 24 is provided. The diameter value of the circular punching knife 19 is smaller than the diameter value of the through hole 26, which can better enable the circular punching knife 19 to pass through the through hole 26 and avoid the problem of interference.

[0038] On the bottom surface of the top seat 4, an extrusion plate 21 is fixedly installed. In the middle of the bottom surface of the extrusion plate 21, a punching column 23 is fixedly installed. The bottom end of the punching column 23 penetrates through the guide hole 24 and the circular punching knife 19 and extends into the circular punching knife 19. At the bottom end of the punching column 23, a center punching knife 22 is fixedly installed.

[0039] Working principle: When in use, place the material plate to be punched on the fixed seat 2, start the external driving device, and extend the telescopic end, thereby pushing the top seat 4 and the punching seat 3 to move downward and the internal and external components to move downward synchronously. When the bottom surface of the punching seat 3 contacts the material plate, during the continuous downward movement, the punching seat 3 will squeeze and fix the material plate. Due to the interference between the punching seat 3 and the material contact, when the top seat 4 is continuously pressed down, the top seat 4 drives the center punching knife 22 and the punching column 23 to move downward. Therefore, the center punching knife 22 punches the center position of the material plate. At this time, the pressing plate 21 on the bottom surface of the continuously pressed-down top seat 4 interferes with the punching plate 20, and presses the punching plate 20 to move downward in the groove 11. Thus, the circular punching knife 19 at the bottom of the punching plate 20 punches the outer ring of the material plate, completing the simultaneous punching of the inner and outer circles of the concentric circular sheet, greatly improving the concentricity of the concentric circular sheet. And during punching, the center punching knife 22 and the punching column 23 will push the cut waste material into the interior of the discharge chute 8 and slide outwards.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concentric circular sheet one-time punching and forming device, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly installed with a fixed seat (2) by bolts; In the middle of the upper surface of the fixed seat (2), an empty groove (13) is opened. Inside the empty groove (13), three cylinders (15) arranged in a circular array are fixedly installed. Inside the empty groove (13), a push-back plate (7) is placed. Inside the push-back plate (7), three circular holes (16) arranged in a circular array are opened, and the three cylinders (15) are respectively inserted into the three circular holes (16); Above the fixed seat (2), a punching seat (3) is placed. Above the punching seat (3), a top seat (4) is placed. At the four corners of the top seat (4), guide holes (17) are opened. At the four corners of the punching seat (3), guide posts (6) are fixedly installed, and the bottom ends of the four guide posts (6) respectively penetrate through the four guide holes (17) and extend above the top seat (4). A first spring (9) is sleeved on the outside of the guide post (6), and the top end of the first spring (9) is fixedly connected to the bottom surface of the top seat (4). On the upper surface of the punching seat (3), a groove (11) is opened. Inside the groove (11), a connecting column (10) is fixedly installed. Inside the groove (11), a punching plate (20) is placed. Inside the punching plate (20), two connecting holes (18) are opened, and the top ends of the two connecting columns (10) respectively penetrate through the two connecting holes (18) and extend above the punching plate (20). On the bottom surface of the punching plate (20), a circular punching knife (19) is fixedly installed. On the bottom surface of the punching seat (3), a through hole (26) is opened. In the middle of the punching plate (20), a guide hole (24) is opened; On the bottom surface of the top seat (4), an extrusion plate (21) is fixedly installed. In the middle of the bottom surface of the extrusion plate (21), a punching column (23) is fixedly installed. The bottom end of the punching column (23) penetrates through the guide hole (24) and the circular punching knife (19) and extends into the circular punching knife (19). At the bottom end of the punching column (23), a center punching knife (22) is fixedly installed.

2. The concentric circular sheet one-time punching and forming device according to claim 1, wherein: Inside the empty groove (13), three second springs (14) arranged in a circular array are fixedly installed. The three second springs (14) are respectively sleeved on the outside of the cylinders (15), and the top end of each second spring (14) is fixedly connected to the bottom surface of the push-back plate (7).

3. A concentric circular sheet one-time punching and forming device according to claim 1, characterized in that: Inside the groove (11), two third springs (25) are fixedly installed. The two third springs (25) are respectively sleeved on the outside of the two connecting columns (10), and the top end of each third spring (25) is fixedly connected to the bottom surface of the punching plate (20).

4. A concentric circular sheet one-time punching and forming device according to claim 1, characterized in that: The diameter value of the circular punching knife (19) is smaller than the diameter value of the through hole (26).

5. A concentric circular sheet one-time punching and forming device according to claim 1, characterized in that: In the middle of the upper surface of the top seat (4), a fixed connecting plate (5) is fixedly installed.

6. The one-time punching and forming device for concentric circular sheets according to claim 1, wherein: An outlet chute (8) is opened inside the base (1).

7. A concentric circular sheet one-time punching and forming device according to claim 1, characterized in that: An outlet hole (12) is opened in the middle of the fixed seat (2). The diameter value of the punching column (23) is equal to the diameter value of the outlet hole (12).

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