A roller mechanism for circular die cutting

Abstract

The present invention relates to the field of die-cutting technology, and discloses a roller mechanism for circular die-cutting, comprising a bottom shaft, a die-cutting shaft and an optical shaft arranged in sequence from bottom to top, the bottom shaft can selectively fit with the die-cutting shaft in clearance or with an axial surface pressing, and two groups of driving wheels are arranged at intervals on the bottom shaft; a first driven wheel is installed at the first end of the die-cutting shaft, the die-cutting shaft matches with the corresponding driving wheel through the first driven wheel, and the bottom shaft and the axial surface of the die-cutting shaft are pressed and fitted; a second driven wheel is installed at the second end of the die-cutting shaft, and a third driven wheel is arranged at the corresponding end of the optical shaft, the die-cutting shaft matches with the corresponding driving wheel and the third driven wheel respectively through the second driven wheel, the bottom shaft and the die-cutting shaft are clearance fitted, and the die-cutting shaft and the optical shaft are die-cutting fitted. The roller mechanism for circular die-cutting realizes die-cutting of materials through the bottom shaft and the axial surface pressing and fitting of the die-cutting shaft; the die-cutting shaft performs die-cutting on the material through the die-cutting shaft and the optical shaft, which reduces the number of transmission wheel groups and improves the die-cutting accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of die cutting, in particular to a roller mechanism for round-to-round die cutting. Background Art

[0002] The roller mechanism for circular die cutting was first applied in the printing industry and is a high-efficiency die cutting tool that replaces flat-press flat punching. In order to achieve the dual effects of tangent and reverse cutting, the existing roller mechanism for circular die cutting usually includes an avoidance roller, a die cutting shaft and an optical shaft. During tangent, the avoidance roller, the optical shaft and the die cutting shaft are arranged in sequence from bottom to top, and there is a gap between the avoidance roller and the optical shaft. By arranging transmission wheels at the corresponding ends of the three shafts, the transmission wheel on the avoidance roller drives the transmission wheel on the optical shaft to rotate, and the transmission wheel on the optical shaft drives the transmission wheel on the die cutting shaft to rotate. Through the rotation of the die cutting shaft and the optical shaft, the tangent of the material is achieved; during reverse cutting, the avoidance roller, the die cutting shaft and the optical shaft are arranged in sequence, and there is also a gap between the avoidance roller and the die cutting shaft. By arranging transmission wheels at the corresponding ends of the three shafts, the transmission wheel on the avoidance roller drives the transmission wheel on the die cutting shaft to rotate, and the transmission wheel on the die cutting shaft drives the transmission wheel on the optical shaft to rotate. Through the rotation of the optical shaft and the die cutting shaft, reverse cutting of the material is achieved. It can be seen that in the process of tangent and reverse tangent, the rotation of three axes is required, and the number of transmission wheel groups is large, which reduces the transmission accuracy and die-cutting accuracy. Summary of the invention

[0003] The purpose of the present invention is to provide a roller mechanism for round-to-round die cutting, which improves the transmission accuracy and die cutting accuracy.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The present invention provides a roller mechanism for circular pressing and die cutting, comprising a bottom shaft, a die cutting shaft and an optical shaft arranged in sequence from bottom to top, wherein the bottom shaft can selectively fit with the die cutting shaft in clearance or with the shaft surface in a press fit, and two sets of driving wheels are arranged on the bottom shaft at intervals;

[0006] A first driven wheel is installed at the first end of the die-cutting shaft, the die-cutting shaft is matched with the corresponding driving wheel through the first driven wheel, and the bottom shaft is pressed against the axial surface of the die-cutting shaft;

[0007] A second driven wheel is installed at the second end of the die-cutting shaft, and a third driven wheel is arranged at the corresponding end of the optical shaft. The die-cutting shaft cooperates with the corresponding driving wheel and the third driven wheel respectively through the second driven wheel, the bottom shaft cooperates with the die-cutting shaft in clearance, and the die-cutting shaft cooperates with the optical shaft in die-cutting.

[0008] The circular die-cutting roller mechanism comprises a bottom shaft, a die-cutting shaft and an optical shaft which are arranged in sequence. The bottom shaft can selectively have a clearance fit or an axial surface pressure fit with the die-cutting shaft. Two groups of driving wheels are arranged at intervals on the bottom shaft. A first driven wheel is installed at the first end of the die-cutting shaft. The die-cutting shaft cooperates with the corresponding driving wheel through the first driven wheel. The bottom shaft cooperates with the axial surface of the die-cutting shaft to achieve tangent to the material. A second driven wheel is installed at the second end of the die-cutting shaft. A third driven wheel is arranged at the corresponding end of the optical shaft. The die-cutting shaft cooperates with the corresponding driving wheel and the third driven wheel respectively through the second driven wheel. The bottom shaft has a clearance fit with the die-cutting shaft. The die-cutting shaft cooperates with the optical shaft for die-cutting. The material is reversely cut through the die-cutting shaft and the optical shaft. The circular die-cutting roller mechanism can realize two different die-cutting functions. Compared with the prior art, the number of transmission wheel groups is reduced during tangent, thereby improving the die-cutting accuracy.

[0009] As a preferred solution of the above-mentioned roller mechanism for circular die cutting, a first support ring is arranged on the bottom shaft, the die cutting shaft includes a tangent shaft and a reverse tangent shaft, the tangent shaft is provided with an avoidance groove, the reverse tangent shaft is provided with a second support ring, and the first support ring can cooperate with the avoidance groove or the second support ring.

[0010] Through the cooperation of the first support ring and the second support ring, the clearance cooperation between the bottom shaft and the anti-tangent shaft is realized; through the cooperation of the first support ring and the avoidance groove, the axial surface pressure cooperation between the bottom shaft and the tangent shaft is realized. The above structure is simple and the switching is relatively easy.

[0011] As a preferred solution of the above-mentioned roller mechanism for circular die cutting, two of the first support rings are arranged at intervals on the bottom shaft, two of the avoidance grooves are arranged at intervals on the tangent axis, and two of the second support rings are arranged at intervals on the anti-tangent axis, and each of the first support rings can be abutted and matched with one of the second support rings, or each of the first support rings can extend into one of the avoidance grooves.

[0012] The above arrangement can achieve stable cooperation between the first support ring and the second support ring or the avoidance groove.

[0013] As a preferred solution of the above-mentioned roller mechanism for circular die cutting, the circumferential surface of the bottom shaft is a smooth surface, and the first support ring protrudes from the smooth surface.

[0014] The circumferential surface of the bottom shaft is a smooth surface, so that the bottom shaft can be used as a smooth shaft, and the axial surface press fit between the bottom shaft and the die-cutting shaft is achieved.

[0015] As a preferred solution of the above-mentioned roller mechanism for circular die cutting, a smooth support area matching with the tangent axis is provided on the bottom shaft.

[0016] The bottom shaft is provided with a smooth support area matched with the second support ring, so as to realize the axial surface press fit between the bottom shaft and the die-cutting shaft.

[0017] As a preferred solution of the above-mentioned roller mechanism for round-to-round die cutting, the two groups of driving wheels are respectively arranged at both ends of the bottom shaft.

[0018] Two sets of driving wheels are respectively arranged at the two ends of the bottom shaft to leave enough space for die-cutting materials.

[0019] As a preferred solution of the above-mentioned roller mechanism for round-to-round die cutting, the die cutting shaft is a knife shaft, a reverse cutting roller or a rubber roller.

[0020] The die-cutting shaft is a knife shaft, a reverse cutting roller or a rubber roller to achieve different die-cutting functions.

[0021] As a preferred solution of the above-mentioned roller mechanism for round-to-round die cutting, the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel are all gears.

[0022] The above settings can ensure the stability of transmission.

[0023] As a preferred solution of the above-mentioned roller mechanism for round-to-round die cutting, one of the two groups of driving wheels is transmission-connected with a driving mechanism.

[0024] The arrangement of the driving mechanism can realize automatic driving of the driving wheel.

[0025] As a preferred solution of the above-mentioned roller mechanism for round-to-round die cutting, the driving mechanism includes a driving motor and a reducer which are sequentially connected in transmission, and the reducer is connected in transmission with one group of the driving wheels.

[0026] The driving mechanism transmits the driving force to the reducer through the driving motor to drive the rotation of the driving wheel, thereby achieving smooth driving of the driving wheel.

[0027] The beneficial effects of the present invention include: comprising a bottom shaft, a die-cutting shaft and an optical shaft arranged in sequence from bottom to top, the bottom shaft can selectively have a clearance fit or an axial surface pressure fit with the die-cutting shaft, two groups of driving wheels are arranged at intervals on the bottom shaft, a first driven wheel is installed at the first end of the die-cutting shaft, the die-cutting shaft cooperates with the corresponding driving wheel through the first driven wheel, the bottom shaft and the axial surface of the die-cutting shaft are pressed to achieve tangent to the material; a second driven wheel is installed at the second end of the die-cutting shaft, a third driven wheel is arranged at the corresponding end of the optical shaft, the die-cutting shaft cooperates with the corresponding driving wheel and the third driven wheel respectively through the second driven wheel, the bottom shaft and the die-cutting shaft have a clearance fit, the die-cutting shaft and the optical shaft are die-cutting fit, the material is reversely cut through the die-cutting shaft and the optical shaft, the roller mechanism for round-to-round die-cutting can achieve two different die-cutting functions, compared with the prior art, the number of transmission wheel groups is reduced during tangent, and the die-cutting accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the roller mechanism for round-to-round die cutting provided by the present invention;

[0029] Figure 2 The invention discloses a schematic structural diagram of the bottom shaft of the roller mechanism for circular die cutting provided by the invention and the axial surface of the tangent shaft being pressed and matched.

[0030] In the figure:

[0031] 1. Bottom shaft; 10. Smooth surface; 11. Driving wheel; 12. First support ring; 13. Smooth surface support area;

[0032] 21. first driven wheel; 22. second driven wheel; 23. second support ring; 24. avoidance groove; 25. tangent axis; 26. inverse tangent axis;

[0033] 3. Optical axis; 31. Third driven wheel;

[0034] 4. Driving mechanism;

[0035] 5. Support frame. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] like Figure 1 and Figure 2 As shown, this embodiment provides a roller mechanism for circular die-cutting, including a bottom shaft 1, a die-cutting shaft and an optical shaft 3 which are arranged in sequence. The bottom shaft 1, the die-cutting shaft and the optical shaft 3 are rotatably arranged on a support frame 5 from bottom to top in sequence. The bottom shaft 1 can selectively fit with the die-cutting shaft in clearance or with an axial surface press fit. Two sets of driving wheels 11 are arranged on the bottom shaft 1 at intervals. A first driven wheel 21 is installed at the first end of the die-cutting shaft. The die-cutting shaft matches with the corresponding driving wheel 11 through the first driven wheel 21. The bottom shaft 1 is pressed against the axial surface of the die-cutting shaft to achieve tangent to the material. The second end of the die-cutting shaft A second driven wheel 22 is installed, and a third driven wheel 31 is provided at the corresponding end of the optical axis 3. The die-cutting shaft cooperates with the corresponding driving wheel 11 and the third driven wheel 31 respectively through the second driven wheel 22. The bottom shaft 1 cooperates with the die-cutting shaft in clearance, and the die-cutting shaft cooperates with the optical axis 3 for die-cutting. The material is reversely cut through the die-cutting shaft and the optical axis 3. The roller mechanism for round-to-round die-cutting can realize two different die-cutting functions. Compared with the prior art, it reduces the number of transmission wheel groups during tangent and improves the die-cutting accuracy. Moreover, there is no need to switch the positions of the axes back and forth, so it is more convenient to use.

[0041] Specifically, the bottom shaft 1 is provided with a first support ring 12, the die cutting shaft includes a tangent shaft 25 and a reverse tangent shaft 26, and the tangent shaft 25 is provided with an avoidance groove 24 (see Figure 2 ), a second support ring 23 is provided on the reverse tangent shaft 26 (see Figure 1 ), the first support ring 12 can cooperate with the second support ring 23 or the avoidance groove 24. Through the cooperation of the first support ring 12 and the second support ring 23, the clearance fit between the bottom shaft 1 and the anti-tangent shaft 26 is realized; through the cooperation of the first support ring 12 and the avoidance groove 24, the axial surface pressing fit between the bottom shaft 1 and the tangent shaft 25 is realized, so that the bottom shaft 1 can be used as a pressing shaft for the die cutting shaft. The above structure is simple and the die cutting method is easy to switch.

[0042] Exemplarily, two first support rings 12 are arranged at intervals on the bottom shaft 1, two avoidance grooves 24 are arranged at intervals on the tangent shaft 25, and two second support rings 23 are arranged at intervals on the anti-tangent shaft 26. Each first support ring 12 can be abutted with a second support ring 23, or each first support ring 12 can extend into an avoidance groove 24. The above arrangement can achieve stable cooperation between the first support ring 12 and the second support ring 23 or the avoidance groove 24. When the bottom shaft 1 and the tangent shaft 25 are pressed against each other on the axial surface, the two first support rings 12 extend into the two avoidance grooves 24 respectively; when the bottom shaft 1 and the anti-tangent shaft 26 are in clearance, each first support ring 12 is pressed against a second support ring 23 respectively.

[0043] Optionally, the circumferential surface of the bottom shaft 1 is a smooth surface 10, and the first support ring 12 protrudes from the smooth surface 10, so that the bottom shaft 1 can be used as an optical axis 3 to achieve an axial surface press fit between the bottom shaft 1 and the tangential axis 25.

[0044] Optionally, a smooth surface support area 13 matching with the tangent axis 25 is provided on the bottom axis 1, so as to realize the axial surface press fit between the bottom axis 1 and the tangent axis 25. The specific setting position of the smooth surface support area 13 can be designed according to the requirements.

[0045] Exemplarily, two sets of driving wheels 11 are respectively arranged at both ends of the bottom shaft 1 to leave enough space for the die-cutting material. In this embodiment, the driving wheel 11, the first driven wheel 21, the second driven wheel 22 and the third driven wheel 31 are all gears to ensure the stability of the transmission.

[0046] Optionally, one of the two groups of driving wheels 11 is connected to the driving mechanism 4 in a transmission manner, and the driving wheel 11 can be automatically driven by the driving mechanism 4. Specifically, the driving mechanism 4 includes a driving motor and a reducer that are sequentially connected in a transmission manner, and the reducer is connected in a transmission manner to one of the groups of driving wheels 11. The driving mechanism 4 transmits the driving force to the reducer through the driving motor to drive the rotation of the driving wheel 11, thereby realizing a smooth drive of the driving wheel 11.

[0047] Optionally, the die-cutting shaft is a knife shaft, a reverse cutting roller or a rubber roller to achieve different die-cutting functions.

[0048] like Figure 2 As shown, the driving wheel 11 on the right end of the bottom shaft 1 is meshed with the first driven wheel 21 on the right end of the tangent shaft 25, the first support ring 12 extends into the avoidance groove 24, the smooth surface 10 of the bottom shaft 1 cooperates with the tangent shaft 25, and the material enters between the bottom shaft 1 and the tangent shaft 25 to achieve tangency of the material.

[0049] It should be noted that: since the optical axis 3 is not needed during tangent, it is not necessary to install the optical axis 3. Of course, the optical axis 3 can also be installed, but the optical axis 3 does not participate in the work.

[0050] like Figure 1 As shown, the driving wheel 11 at the left end of the bottom shaft 1 is meshed with the second driven wheel 22 at the left end of the reverse cutting shaft 26, the first support ring 12 is abutted with the second support ring 23, and there is a gap between the bottom shaft 1 and the reverse cutting shaft 26, and the material that does not need to be die-cut can pass through the gap, the second driven wheel 22 is meshed with the third driven wheel 31 at the left end of the optical axis 3, and the material to be die-cut extends between the reverse cutting shaft 26 and the optical axis 3 to realize reverse cutting of the material.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A roller mechanism for round-to-round die cutting, characterized in that: It comprises a bottom shaft (1), a die-cutting shaft and an optical shaft (3) which are arranged in sequence from bottom to top, the bottom shaft (1) can selectively engage with the die-cutting shaft in clearance or in axial surface pressure, and two sets of driving wheels (11) are arranged on the bottom shaft (1) at intervals; A first driven wheel (21) is installed at the first end of the die-cutting shaft, the die-cutting shaft is matched with the corresponding driving wheel (11) through the first driven wheel (21), and the bottom shaft (1) is pressed against the axial surface of the die-cutting shaft; A second driven wheel (22) is installed at the second end of the die-cutting shaft, and a third driven wheel (31) is provided at the corresponding end of the optical shaft (3); the die-cutting shaft is matched with the corresponding driving wheel (11) and the third driven wheel (31) respectively through the second driven wheel (22); the bottom shaft (1) is matched with the die-cutting shaft in clearance; and the die-cutting shaft is matched with the optical shaft (3) in die-cutting manner; The bottom shaft (1) is provided with a first support ring (12), the die cutting shaft comprises a tangent shaft (25) and a reverse tangent shaft (26), the tangent shaft (25) is provided with an avoidance groove (24), the reverse tangent shaft (26) is provided with a second support ring (23), and the first support ring (12) can cooperate with the avoidance groove (24) or the second support ring (23); The two sets of driving wheels (11) are respectively arranged at two ends of the bottom shaft (1); The die-cutting shaft is a knife shaft, a reverse cutting roller or a rubber roller.

2. The roller mechanism for round die cutting according to claim 1, characterized in that: Two first support rings (12) are arranged at intervals on the bottom shaft (1), two avoidance grooves (24) are arranged at intervals on the tangent shaft (25), and two second support rings (23) are arranged at intervals on the anti-tangent shaft (26), and each of the first support rings (12) can be abutted and matched with one of the second support rings (23), or each of the first support rings (12) can extend into one of the avoidance grooves (24).

3. The roller mechanism for round die cutting according to claim 1, characterized in that: The circumferential surface of the bottom shaft (1) is a smooth surface (10), and the first support ring (12) protrudes from the smooth surface (10).

4. The roller mechanism for round die cutting according to claim 3, characterized in that: The bottom shaft (1) is provided with a smooth support area (13) that matches the tangent axis (25).

5. The roller mechanism for round die cutting according to any one of claims 1 to 4, characterized in that: The driving wheel (11), the first driven wheel (21), the second driven wheel (22) and the third driven wheel (31) are all gears.

6. The roller mechanism for round die cutting according to any one of claims 1 to 4, characterized in that: One of the two sets of driving wheels (11) is transmission-connected to a driving mechanism (4).

7. The roller mechanism for round die cutting according to claim 6, characterized in that: The driving mechanism (4) comprises a driving motor and a reducer which are sequentially connected in transmission, and the reducer is connected in transmission to one set of the driving wheels (11).

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