Ejector pin cutter

Abstract

The utility model relates to the technical field of cutter shaft structures, solves the problem that in the prior art, the machining period is long, and discloses an ejector pin cutter which comprises a shaft body, a secondary shaft head and a main shaft head connected to the other end of the shaft body, a plurality of connecting bolts penetrate through the main shaft head in a circumferential array mode, and connecting screw holes corresponding to the connecting bolts are formed in one end of the shaft body. A through groove is coaxially formed in the shaft body, and the through groove penetrates through the shaft body towards one end far away from the secondary shaft head; an end column is integrally formed on the shaft body and can be inserted into the through groove. Through the integral forming design of the shaft body and the secondary shaft head, the production period of the cutter is shortened, and the production cost is reduced. And meanwhile, the stability and rigidity of the whole structure are enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of tool shaft structures, and in particular to an ejector tool. Background Art

[0002] The die-cutting process allows printed materials or other paper products to be cut according to pre-designed patterns using die-cutting blades, enabling mass production. Die-cutting typically involves a die shaft, which consists of a shaft body and two shaft heads. The shaft body is a hollow tubular structure with two open ends. The two shaft heads are fixed to each end of the shaft by screws, and the shaft body also has a die mold formed around its perimeter.

[0003] When in use, the two shaft heads are rotatably mounted on the frame, so that the blank can pass through the cutter shaft and the cutter die can cut the blank, thereby achieving the purpose of die-cutting the blank.

[0004] The traditional method for machining a shaft is to machine the shaft head and shaft body separately. During shaft body machining, the shaft body is supported by an auxiliary shaft head. After the shaft body is engraved with a die, it is heat treated to change its hardness before the shaft head and shaft body are assembled.

[0005] With respect to the above-mentioned related technologies, since the shaft head and the shaft body are processed separately and then assembled in the prior art, the processing cycle is long, and the cost and material consumption are high. Utility Model Content

[0006] In order to improve the defect of the prior art that the processing time is long, the present application provides a thimble tool.

[0007] The following technical solutions are adopted:

[0008] A thimble tool comprises an integrally formed shaft body and a secondary shaft head, and a main shaft head connected to the other end of the shaft body; a plurality of connecting bolts are passed through the main shaft head in a circumferential array, and a connecting screw hole corresponding to the connecting bolts is provided at one end of the shaft body; a through groove is coaxially provided on the shaft body, and the through groove passes through the shaft body toward the end away from the secondary shaft head; an end column is integrally formed on the shaft body, and the end column can be inserted into the through groove.

[0009] By adopting this technical solution, the integrated design of the shaft and secondary spindle head shortens the tool production cycle and reduces production costs. It also enhances the stability and rigidity of the overall structure, reducing assembly errors and looseness between components. This improves the stability of the ejector tool under high-speed rotation or high cutting forces, extending its service life and reducing failure rates.

[0010] Optionally, at least two first pin holes are provided at the end of the spindle head, and the first pin holes are arranged in a circular array along the axis of the spindle head; a second pin hole corresponding to the first pin hole is provided at the end of the shaft body; a positioning pin is passed through the first pin hole, and the positioning pin passes through the first pin hole to the corresponding second pin hole.

[0011] By adopting this technical solution, the spindle head and shaft body are precisely positioned through the cooperation of the first and second pin holes and the locating pins. At the same time, the connecting bolts penetrate the spindle head and shaft body for fastening. This ensures the connection precision between the spindle head and shaft body, improving machining accuracy. It also facilitates quick assembly and disassembly, increasing maintenance efficiency.

[0012] Optionally, an annular recessed groove is provided on the edge of the spindle head, and the connecting bolt is arranged in the recessed groove; the height of the nut of the connecting bolt is less than the depth of the recessed groove.

[0013] By adopting the above technical solution, the connecting bolt is set in the annular groove of the spindle head, and the height of the nut is lower than the depth of the groove. This effectively prevents the connecting bolt from being directly exposed to the outside and causing wear and collision, thereby extending the service life of the bolt.

[0014] Optionally, a first support shaft is formed on a side of the spindle head facing away from the shaft body, and the first support shaft is used to connect to the frame.

[0015] Optionally, the first support shaft is a stepped structure and includes a plurality of first step portions, so as to adapt to connection holes of different diameters on the frame for installing the first support shaft.

[0016] By adopting this technical solution, a first support shaft is provided on the side of the spindle head facing away from the shaft body for connecting to the frame. This first support shaft has a stepped structure that accommodates connection holes of varying diameters. This improves the stability and flexibility of the connection between the ejector tool and the frame, ensuring stable operation under various working conditions.

[0017] Optionally, a second support shaft is formed on a side of the secondary shaft head facing away from the shaft body, and the second support shaft is used to connect to the frame.

[0018] By adopting the above technical solution, the same principle applies as above.

[0019] Optionally, the second support shaft is a stepped structure and includes a plurality of second step portions, so as to adapt to connection holes of different diameters on the frame for installing the second support shaft.

[0020] Optionally, the shaft body includes a first transition section, a processing section and a second transition section arranged in sequence; the through groove passes through the end of the first transition section and extends into the second transition section; an air intake pipe is coaxially provided through the spindle head, and the air intake pipe rotates relative to the spindle head; the air intake pipe is connected to the through groove; the outer walls of the first transition section and the second transition section are provided with a plurality of air holes in a circumferential array; the air holes pass through the first transition section or the second transition section and are connected to the through groove.

[0021] Optionally, the air hole is arranged to expand outward at one end away from the through groove.

[0022] Optionally, a circular stepped connecting groove is coaxially opened at one end of the end column away from the main shaft head; a connecting disc is provided at one end of the air intake pipe, and the connecting disc is rotatably connected to the inner layer of the connecting groove; the outer layer of the connecting groove is covered with a sealing plate; the air intake pipe passes through the sealing plate; the sealing plate is connected to the end column by a countersunk bolt.

[0023] In summary, this application has at least one of the following beneficial effects:

[0024] 1. The one-piece shaft and secondary shaft head shorten the production cycle of the tool and make the shaft structure more stable during heat treatment.

[0025] 2. The positioning pin passes through the second pin hole and the first pin hole to position the spindle head so that the spindle head and the shaft body have a high concentricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of embodiment 1;

[0027] Figure 2 This is a schematic diagram showing the cross-sectional structure of embodiment 1;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the spindle head of Example 1;

[0029] Figure 4 This is a schematic diagram of the top view of the spindle head of the first embodiment;

[0030] Figure 5 This is a schematic diagram of the shaft end structure of Example 1;

[0031] Figure 6 2 is a schematic cross-sectional view of the second embodiment;

[0032] Figure 7 It is a schematic diagram of the enlarged structure of point A in Example 2.

[0033] Explanation of the accompanying drawings: 1. Shaft body; 11. First transition section; 12. Processing section; 13. Second transition section; 14. Connecting screw hole; 15. Through groove; 16. Second pin hole; 17. Air hole; 2. Secondary shaft head; 21. Second support shaft; 22. Second stepped portion; 3. Main shaft head; 31. Connecting bolt; 32. First pin hole; 33. Countersunk groove; 34. First support shaft; 35. First stepped portion; 36. End column; 361. Connecting groove; 362. Sealing plate; 363. Countersunk bolt; 4. Inlet pipe; 41. Connecting disc. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 To the attached Figure 7 This application is described in further detail.

[0035] Example 1:

[0036] In the prior art, the shaft body and the two shaft heads are produced separately. The shaft body is a hollow tubular structure with openings at both ends. The two shaft heads are fixed to the two ends of the knife shaft by screws, and the peripheral wall of the shaft body is also formed with a knife mold. During the machining of the shaft body, the shaft body is supported by an auxiliary shaft head. After the knife mold is engraved on the shaft body, it is heat treated to change the hardness, and then the shaft head and the shaft body are assembled. This causes the shaft body with a hollow tubular structure to be easily deformed during heat treatment, which is not conducive to the correct installation of the shaft head. The separate production of the two shaft heads increases material consumption and production costs, and prolongs the production period.

[0037] Therefore, in order to shorten the production cycle of the tool and to make the structure of the shaft body more stable when undergoing heat treatment. This embodiment provides a thimble tool, including an integrally formed shaft body 1 and a secondary shaft head 2, and a main shaft head 3 connected to the other end of the shaft body 1. A plurality of connecting bolts 31 are passed through the main shaft head 3 in a circumferential array, and a connecting screw hole 14 corresponding to the connecting bolt 31 is provided at one end of the shaft body 1. The connecting bolts 31 cooperate with the connecting screw holes 14 to achieve a detachable connection between the main shaft head 3 and the end of the shaft body 1. A through groove 15 is coaxially provided on the shaft body 1, and the through groove 15 replaces the original hollow structure of the shaft body 1. The through groove 15 passes through the shaft body 1 toward one end away from the secondary shaft head 2, and the other end is blocked by the secondary shaft head 2. The shaft body 1 is integrally formed with an end column 36, which can be inserted into the through groove 15. The through groove 15 is supported and blocked by the end column 36, and the end column 36 also plays a positioning role.

[0038] Furthermore, at least two first pin holes 32 are provided at the end of the spindle head 3, and the first pin holes 32 are arranged in a circular array along the axis of the spindle head 3. If only two first pin holes 32 are provided, the two first pin holes 32 are symmetrically arranged with the axis of the shaft body 1 as the center. A second pin hole 16 corresponding to the first pin hole 32 is provided at the end of the shaft body 1. A positioning pin passes through the first pin hole 32, and the positioning pin passes through the first pin hole 32 to the corresponding second pin hole 16. The edge of the hole of the second pin hole 16 facing one end of the spindle head 3 is chamfered to guide and correct the positioning pin so that it can be accurately inserted into the second pin hole 16.

[0039] During machining, a locating pin is first inserted through the second pin hole 16 and the first pin hole 32 to position the spindle head 3, ensuring high concentricity between the spindle head 3 and the shaft body 1. Connecting bolts 31 are then installed to lock the spindle head 3 and the shaft body 1, completing the assembly of the spindle head 3 and the shaft body 1. Subsequently, the peripheral wall of the shaft body 1 is engraved and heat treated. After the entire machining process is completed, the spindle head 3 and the shaft body 1 also have good concentricity, improving the die-cutting quality of the die and achieving good performance. Furthermore, the entire machining process does not require the production of an auxiliary spindle head for auxiliary machining, thereby saving material and improving the die-cutting effect.

[0040] Furthermore, an annular recessed groove 33 is defined along the edge of the spindle head 3, into which the connecting bolt 31 is positioned. The height of the nut of the connecting bolt 31 is less than the depth of the recessed groove 33. The provision of the annular recessed groove 33 maintains a flat surface on the spindle head 3, protects the connecting bolt 31, and reduces the possibility of interference with the connecting bolt 31. Furthermore, it facilitates the mating of the connecting bolt 31 with the spindle head 3.

[0041] Furthermore, a first support shaft 34 is formed on the side of the main shaft head 3 facing away from the shaft body 1. The first support shaft 34 is used to connect to the frame. The first support shaft 34 has a stepped structure and includes multiple first stepped portions 35, which are used to accommodate the installation of the first support shaft 34 in connection holes of different diameters on the frame. Similarly, a second support shaft 21 is formed on the side of the secondary shaft head 2 facing away from the shaft body 1. The second support shaft 21 is used to connect to the frame. The second support shaft 21 has a stepped structure and includes multiple second stepped portions 22, which are used to accommodate the installation of the second support shaft 21 in connection holes of different diameters on the frame.

[0042] The implementation principle of this embodiment is:

[0043] During processing, the shaft body 1 and the secondary shaft head 2 are first cut out as one piece, and the second pin hole 16 is processed. The main shaft head 3 is produced, and the first pin hole 32 is processed accordingly. A positioning pin is used to pass through the second pin hole 16 and the first pin hole 32, so that the main shaft head 3 and the shaft body 1 have a higher concentricity, and then the connecting bolt 31 is positioned and processed. Then, the assembly between the main shaft head 3 and the shaft body 1 is realized. The peripheral wall of the shaft body 1 is engraved and heat treated, so that after the overall processing is completed, the main shaft head 3 and the shaft body 1 also have better concentricity, which improves the die-cutting quality of the cutter shaft and has a good use effect. In addition, the entire processing process does not require the additional production of auxiliary shaft heads for auxiliary processing, thereby saving materials and improving the cutter shaft processing effect.

[0044] Example 2:

[0045] During the production process, because the objects being cut by the cutting tool are often made of materials such as paper or plastic, the objects often acquire static electricity due to friction or adhere to the tool due to deformation after cutting, causing the objects to shift during the continuous cutting process. Therefore, to prevent the objects from adhering to the tool, the shaft body 1 in this embodiment also includes a first transition section 11, a processing section 12, and a second transition section 13, which are arranged in sequence. The first and second transition sections 11 and 13 have the same diameter, while the processing section 12 has a larger diameter than the first transition section 11, with the excess diameter used for engraving the die. A through-slot 15 passes through the end of the first transition section 11 and extends into the second transition section 13. An air intake pipe 4 is coaxially provided through the spindle head 3. The air intake pipe 4 is a hollow tubular structure. The air intake pipe 4 rotates relative to the spindle head 3. One end of the air intake pipe 4 extends through the spindle head 3 to the outside for connection to the air supply equipment, and the other end is connected to the through-slot 15. A plurality of air holes 17 are formed in a circumferential array on the outer walls of the first and second transition sections 11 and 13. The air hole 17 passes through the first transition section 11 or the second transition section 13 and is connected to the through groove 15. When the air supply device supplies air into the through groove 15 through the air inlet pipe 4, the air is released from the air hole 17, thereby blowing the cut object to prevent the cut object from sticking to the tool and affecting the cutting accuracy.

[0046] Furthermore, the air hole 17 is configured to expand outward at one end away from the through slot 15. This outward expansion allows the gas to diffuse outward after passing through the air hole 17, reducing the gas flow rate and preventing the formation of negative pressure between the tool and the object being cut, which could cause the object to adhere to the tool due to the Bernoulli effect. Furthermore, this allows the gas to act over a wider range.

[0047] Furthermore, this embodiment provides a combination solution for relative rotation of the air intake pipe 4 and the spindle head 3. A circular stepped connecting groove 361 is coaxially defined on the end of the end post 36, distal from the spindle head 3. A connecting disc 41 is provided at one end of the air intake pipe 4, which is rotatably connected to the inner layer of the connecting groove 361. The outer layer of the connecting groove 361 is covered with a sealing disc 362. The air intake pipe 4 extends through the sealing disc 362. The sealing disc 362 is connected to the end post 36 via a countersunk bolt 363.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A thimble tool, characterized in that: The invention comprises an integrally formed shaft body (1) and a secondary shaft head (2), and a main shaft head (3) connected to the other end of the shaft body (1); a plurality of connecting bolts (31) are passed through in a circumferential array on the main shaft head (3); one end of the shaft body (1) is provided with a connecting screw hole (14) corresponding to the connecting bolts (31); the shaft body (1) is coaxially provided with a through slot (15), and the through slot (15) passes through the shaft body (1) toward the end away from the secondary shaft head (2); the shaft body (1) is integrally formed with an end column (36), and the end column (36) can be inserted into the through slot (15).

2. The ejector tool according to claim 1, characterized in that: At least two first pin holes (32) are provided at the end of the spindle head (3), and the first pin holes (32) are arranged in a circular array along the axis of the spindle head (3); a second pin hole (16) corresponding to the first pin hole (32) is provided at the end of the shaft body (1); a positioning pin is passed through the first pin hole (32), and the positioning pin passes through the first pin hole (32) to the corresponding second pin hole (16).

3. The ejector tool according to claim 1, characterized in that: An annular recessed groove (33) is provided on the edge of the spindle head (3), and the connecting bolt (31) is arranged in the recessed groove (33); the height of the nut of the connecting bolt (31) is less than the depth of the recessed groove (33).

4. The ejector tool according to claim 1, characterized in that: A first support shaft (34) is formed on a side of the spindle head (3) facing away from the shaft body (1), and the first support shaft (34) is used for connecting to a frame.

5. The ejector tool according to claim 4, characterized in that: The first support shaft (34) is a stepped structure and includes a plurality of first stepped portions (35) for adapting to connection holes of different diameters on the frame for installing the first support shaft (34).

6. The ejector tool according to claim 1, characterized in that: A second support shaft (21) is formed on a side of the secondary shaft head (2) facing away from the shaft body (1), and the second support shaft (21) is used for connecting to a frame.

7. The ejector tool according to claim 6, characterized in that: The second support shaft (21) is a stepped structure and includes a plurality of second stepped portions (22) for adapting to connection holes of different diameters on the frame for installing the second support shaft (21).

8. The ejector tool according to claim 1, characterized in that: The shaft body (1) comprises a first transition section (11), a processing section (12) and a second transition section (13) which are arranged in sequence; the through groove (15) passes through the end of the first transition section (11) and extends into the second transition section (13); an air intake pipe (4) is coaxially provided through the spindle head (3), and the air intake pipe (4) rotates relative to the spindle head (3); the air intake pipe (4) is communicated with the through groove (15); the outer walls of the first transition section (11) and the second transition section (13) are both provided with a plurality of air holes (17) in a circumferential array; the air holes (17) pass through the first transition section (11) or the second transition section (13) and are communicated with the through groove (15).

9. The ejector tool according to claim 8, characterized in that: The air hole (17) is arranged to expand outward at one end away from the through groove (15).

10. The ejector tool according to claim 8, characterized in that: A circular stepped connecting groove (361) is coaxially provided at one end of the end column (36) away from the spindle head (3); a connecting disc (41) is provided at one end of the air intake pipe (4), and the connecting disc (41) is rotatably connected to the inner layer of the connecting groove (361); the outer layer of the connecting groove (361) is covered with a sealing sheet (362); the air intake pipe (4) passes through the sealing sheet (362); and the sealing sheet (362) is connected to the end column (36) via a countersunk bolt (363).

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