Octagonal dotted line paper cutter

Abstract

This utility model discloses an octagonal dotted-line paper cutter, comprising: a cutter holder, which is sequentially divided into a shaft clamping section, a mounting section, and a positioning section; two semi-circular cutter assemblies, each detachably connected to the mounting section of the cutter holder, each semi-circular cutter assembly having a blade on its outer circumference, the blades of the two semi-circular cutter assemblies forming a circular blade coaxial with the mounting section; threaded holes, the cutter holder having several threaded holes; and through holes, the semi-circular cutter assemblies having several through holes. When the semi-circular cutter assemblies are fixedly connected to the cutter holder, the through holes correspond to the threaded holes. When the blades are partially worn, the worn semi-circular cutter assembly can be removed and replaced without disassembling the rotating shaft, only by removing the fixing bolts. This convenient operation effectively reduces equipment downtime and improves cigarette box production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cigarette box production technology, and in particular relates to an octagonal dotted line paper cutter. Background Technology

[0002] With the increasing demand for personalized products, many merchants and users have requested cigarette boxes with an octagonal shape. Paper cigarette boxes are made by cutting paper into the corresponding shape, then cutting perforated lines on the cut paper, and finally folding and gluing along the perforated lines to form the cigarette box. Producing octagonal cigarette boxes requires an octagonal perforated line paper cutter. However, octagonal perforated line paper cutters are usually one-piece disc cutters. When the blade wears out, the whole thing needs to be removed and replaced. The paper cutter is mounted on a rotating shaft, and both ends of the rotating shaft are rotatably connected to the external machine body. When the paper cutter needs to be replaced, the rotating shaft usually needs to be removed and replaced, which is quite troublesome. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an octagonal dotted-line paper cutter, comprising: The tool holder is divided into a shaft clamping section, a mounting section, and a positioning section in sequence. The semi-circular cutter assembly has two parts, and both semi-circular cutter assemblies are detachably connected to the mounting section of the cutter holder. The outer circle of each semi-circular cutter assembly has a blade, and the blades of the two semi-circular cutter assemblies form a circular blade coaxial with the mounting section. The tool holder has several threaded holes. Through holes: The semi-circular knife assembly has several through holes. When the semi-circular cutter assembly is fixedly connected to the cutter holder, the through hole and the threaded hole are respectively set.

[0004] Furthermore, it also includes: Positioning protrusion: The inner ring of the semi-circular blade assembly has a positioning protrusion; The tool holder has two positioning grooves on its outer surface of the mounting section, and the shape of the positioning grooves matches the positioning protrusion. When the semi-circular blade assembly is fixedly connected to the blade holder, the positioning protrusion is located in the positioning groove.

[0005] Furthermore, it also includes: A semi-circular annular groove is formed on the end face of the semi-circular cutter group, and the semi-circular annular grooves of the two semi-circular cutter groups form a circular annular groove. A positioning annular groove is formed on the end face of the mounting section, and the positioning annular groove is coaxial with the circular annular groove; A round nut, the outer surface of the positioning section is a threaded surface, the round nut is helically disposed on the positioning section, and a first ring and a second ring are fixedly disposed on the end face of the round nut, the first ring and the second ring respectively match the circular ring groove and the positioning ring groove; When the semi-circular blade assembly is fixedly connected to the blade holder, the first ring and the second ring are located in the circular ring groove and the positioning ring groove, respectively, and the first ring and the second ring are coaxial.

[0006] Furthermore, it also includes: A shielding ring is fixedly fitted on the outer ring of the round nut, and the end face of the shielding ring is in contact with the end face of the semi-circular knife assembly.

[0007] Furthermore, it also includes: A sealing ring is fitted onto a round nut. One end of the sealing ring abuts against a shielding ring, and the other end of the sealing ring abuts against a semi-circular knife assembly.

[0008] Furthermore, the through hole is a countersunk hole.

[0009] Furthermore, it also includes: The tool holder has a keyway on its inner ring.

[0010] The beneficial effects of this utility model are as follows: 1. When the blade is partially worn, there is no need to disassemble the rotating shaft. Simply remove the fixing bolts to remove the worn semi-circular blade assembly for replacement. The operation is convenient, effectively reducing equipment downtime and improving cigarette box production efficiency.

[0011] 2. It can quickly achieve precise positioning of the semi-circular cutter set, ensuring that the through hole and threaded hole quickly correspond after the two semi-circular cutter sets are spliced, reducing maintenance time and improving installation efficiency.

[0012] 3. Enhanced connection stability between the semi-circular blade assembly and the blade holder, preventing axial movement of the semi-circular blade assembly during high-speed cutting; the cooperation of double rings and double ring grooves further ensures the coaxiality of the blade and the blade holder, reduces radial runout during blade rotation, improves cutting effect, and also makes assembly more convenient.

[0013] 4. The shielding ring design can effectively prevent paper scraps, dust and other impurities generated during the cigarette box production process from entering the connection between the semi-circular knife assembly and the knife holder, avoiding component jamming or wear caused by the accumulation of impurities, while reducing the frequency of cleaning and maintenance and extending the maintenance cycle of the device.

[0014] 5. The sealing effect is further improved based on the shielding ring, which can prevent fine dust or oil from entering the gaps between components. At the same time, it can reduce the friction and wear between the shielding ring and the semi-circular knife assembly, extend the service life of both, and ensure the long-term stable operation of the device. Attached Figure Description

[0015] Appendix Figure 1 This is a structural diagram of the present invention; Appendix Figure 2 This is a cross-sectional view of the present invention; Appendix Figure 3 This is a rear view of the present invention when the round nut is removed; Appendix Figure 4 For the appendix Figure 3 An explosion diagram; Appendix Figure 5 This is a sectional view of the round nut. Explanation of reference numerals in the attached drawings: 1. Tool holder, 2. Shaft clamp section, 3. Mounting section, 4. Positioning section, 5. Semi-circular tool set, 6. Blade, 7. Threaded hole, 8. Through hole, 9. Positioning protrusion, 10. Positioning groove, 11. Semi-circular ring groove, 12. Positioning ring groove, 13. Round nut, 14. First ring, 15. Second ring, 16. Shielding ring, 17. Sealing ring, 18. Keyway. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, it should be noted that the terminology used herein is only for describing specific implementations and is not intended to limit the exemplary implementations according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. Example 1

[0017] This embodiment provides an octagonal dotted-line paper cutter, including: Tool holder 1, which is sequentially divided into shaft clamping section 2, mounting section 3 and positioning section 4; There are two semi-circular cutter groups 5. Both semi-circular cutter groups 5 are detachably connected to the mounting section 3 of the cutter holder 1. The outer circle of each semi-circular cutter group 5 has a blade 6. The blades 6 of the two semi-circular cutter groups 5 form a circular blade that is coaxial with the mounting section 3. Threaded holes 7: The tool holder 1 has a plurality of threaded holes 7. Through holes 8: Several through holes 8 are provided on the semi-circular knife assembly 5; When the semi-circular knife assembly 5 is fixedly connected to the knife holder 1, the through hole 8 and the threaded hole 7 are respectively set.

[0018] In this technical solution, the shaft clamping section 2 of the tool holder 1 is used to fix the rotating shaft of the external machine body. First, the tool holder 1 is sleeved onto the rotating shaft of the external machine body. The shaft clamping section 2 has a semicircular block and a detachable semicircular block. The two semicircular blocks are clamped together by screws. The shaft clamp is locked to the rotating shaft by screws (this is the prior art and will not be described in detail here).

[0019] Among them, the shaft clamping section 2, mounting section 3, and positioning section 4 of the tool holder 1 are all coaxially arranged with the inner ring of the tool holder 1.

[0020] The shaft clamp section 2 of the tool holder 1 is used to lock with the external rotating shaft, so that when the rotating shaft of the external machine body rotates, the tool holder 1 can be driven to rotate through the shaft clamp section 2; Installation section 3 provides an installation reference surface for the semi-circular cutter group 5, ensuring that the two semi-circular cutter groups 5 can be spliced ​​together to form a complete circular blade. The inner and outer rings of the semi-circular blade assembly 5, as well as the circular blade, are coaxial with the mounting section 3. During assembly, the two semi-circular blade assemblies 5 are placed against the outer surface of the mounting section 3 of the blade holder 1, aligning the through hole 8 with the threaded hole 7. The semi-circular blade assembly 5 is then fixed to the blade holder 1 by passing a bolt through the through hole 8 and screwing it into the threaded hole 7. Conversely, disassembly is performed by moving the bolt through the through hole 8. Since the blade holder 1 is pre-fixed on the rotating shaft, and the semi-circular blade assembly 5 is detachably connected to the blade holder 1, it is not necessary to disassemble the blade holder 1 and the rotating shaft of the external machine body when the blade 6 needs to be replaced. Only the semi-circular blade assembly 5 needs to be replaced, saving maintenance time and improving production efficiency.

[0021] When replacing parts, an air gun can be used to blow out paper scraps and other impurities from the gaps to ensure installation accuracy.

[0022] With this structural design, when the blade 6 is partially worn, there is no need to disassemble the rotating shaft. Only the fixing bolts need to be removed to remove the worn semi-circular blade assembly 5 for replacement. The operation is convenient, effectively reducing equipment downtime and improving cigarette box production efficiency. Example 2

[0023] This embodiment provides an octagonal dotted-line paper cutter, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0024] Furthermore, it also includes: Positioning protrusion 9: The inner ring protrusion of the semi-circular knife assembly 5 is formed with positioning protrusion 9; Positioning groove 10: Two positioning grooves 10 are formed on the outer surface of the mounting section 3 of the tool holder 1, and the shape of the positioning groove 10 matches the positioning protrusion 9; When the semi-circular blade assembly 5 is fixedly connected to the blade holder 1, the positioning protrusion 9 is located in the positioning groove 10.

[0025] In this technical solution, the positioning protrusion 9 and the positioning groove 10 adopt a clearance fit design. When assembling the semi-circular cutter group 5, the positioning protrusion 9 of the inner ring of the semi-circular cutter group 5 must first be aligned with the positioning groove 10 of the mounting section 3 of the cutter holder 1 and inserted, and then the bolts are fixed. At the same time, after the positioning protrusion 9 is inserted into the positioning groove 10, the through hole 8 of the semi-circular cutter group 5 will correspond to the threaded hole 7 of the cutter holder 1, which achieves the effect of quickly aligning the hole position and reducing maintenance time.

[0026] The engagement of the positioning protrusion 9 and the positioning groove 10 can first position the circumferential position of the semi-circular knife assembly 5 and the knife holder 1, thus preventing the semi-circular knife assembly 5 from rotating or shifting during the bolt tightening process.

[0027] This structural design enables rapid and precise positioning of the semi-circular cutter group 5, ensuring that the through hole 8 and threaded hole 7 quickly align after the two semi-circular cutter groups 5 are spliced ​​together, reducing maintenance time and improving installation efficiency. Example 3

[0028] This embodiment provides an octagonal dotted-line paper cutter, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0029] Furthermore, it also includes: A semi-circular annular groove 11 is formed on the end face of the semi-circular cutter group 5, and the semi-circular annular grooves 11 of the two semi-circular cutter groups 5 form a circular annular groove. A positioning annular groove 12 is formed on the end face of the mounting section 3, and the positioning annular groove 12 is coaxial with the circular annular groove; The round nut 13 has a threaded outer surface on the positioning section 4. The round nut 13 is spirally disposed on the positioning section 4. The end face of the round nut 13 is fixedly provided with a first ring 14 and a second ring 15. The first ring 14 and the second ring 15 are respectively matched with the circular ring groove and the positioning ring groove 12. When the semi-circular blade assembly 5 is fixedly connected to the blade holder 1, the first ring 14 and the second ring 15 are located in the circular ring groove and the positioning ring groove 12, respectively, and the first ring 14 and the second ring 15 are coaxial.

[0030] In this technical solution, the round nut 13 is threadedly connected to the positioning section 4, the first ring 14 matches the circular ring groove, the second ring 15 matches the positioning ring groove 12, and the first ring 14, the second ring 15 and the round nut 13 are coaxial.

[0031] During assembly, when assembling the semi-circular cutter assembly 5, the positioning protrusion 9 of the inner ring of the semi-circular cutter assembly 5 should first be aligned with the positioning groove 10 of the mounting section 3 of the cutter holder 1 and inserted. Then, the round nut 13 can be turned so that the first ring 14 can be inserted into the circular ring groove and the second ring 15 can be inserted into the positioning ring groove 12, thus fixing the semi-circular cutter assembly 5 axially for the second time. This makes it easier to assemble without holding the semi-circular cutter assembly 5 by hand when fixing the semi-circular cutter assembly 5 to the cutter holder 1 with bolts.

[0032] Meanwhile, after the semi-circular cutter assembly 5 is fixed to the cutter holder 1 with bolts, tightening the round nut 13 will allow the first ring 14 to be embedded in the circular ring groove and the second ring 15 to be embedded in the positioning ring groove 12, so that the end face of the round nut 13 abuts against the end face of the semi-circular cutter assembly 5, further providing anti-loosening performance.

[0033] This structural design enhances the connection stability between the semi-circular blade assembly 5 and the blade holder 1, preventing axial movement of the semi-circular blade assembly 5 during high-speed cutting. The cooperation of the double ring and double ring groove further ensures the coaxiality of the blade 6 and the blade holder 1, reduces the radial runout of the blade 6 during rotation, improves the cutting effect, and also makes assembly more convenient. Example 4

[0034] This embodiment provides an octagonal dotted-line paper cutter, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] Furthermore, it also includes: A shielding ring 16 is fixedly sleeved on the outer ring of the round nut 13, and the end face of the shielding ring 16 is in contact with the end face of the semi-circular knife assembly 5.

[0036] In this technical solution, the shielding ring 16 is fixedly sleeved on the outer ring of the round nut 13 to ensure that it rotates synchronously with the round nut 13; After the round nut 13 is tightened, the end face of the shielding ring 16 will fit tightly against the end face of the semi-circular cutter group 5, completely covering the connection gap between the semi-circular cutter group 5 and the cutter holder 1.

[0037] Through this structural design, the shielding ring 16 can effectively prevent paper scraps, dust and other impurities generated during the cigarette box production process from entering the connection between the semi-circular knife group 5 and the knife holder 1, avoiding component jamming or wear caused by the accumulation of impurities, while reducing the frequency of cleaning and maintenance and extending the maintenance cycle of the device. Example 5

[0038] This embodiment provides an octagonal dotted-line paper cutter, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0039] Furthermore, it also includes: A sealing ring 17 is fitted onto a round nut 13. One end of the sealing ring 17 abuts against a shielding ring 16, and the other end of the sealing ring 17 abuts against a semi-circular knife assembly 5.

[0040] In this technical solution, the inner diameter of the sealing ring 17 is closely fitted with the outer diameter of the round nut 13. After assembly, when the round nut 13 is tightened, the sealing ring 17 undergoes slight deformation under the squeezing action of the shielding ring 16 and the semi-circular knife group 5, forming a sealing surface, which further prevents processing debris such as paper scraps from entering the assembly joint, resulting in better installation accuracy.

[0041] Meanwhile, the sealing ring 17, after the round nut 13 is tightened, can also provide a certain anti-slip effect, and together with the self-locking of the thread, it can further prevent loosening. This structural design further enhances the sealing effect based on the shielding ring 16, preventing fine dust or oil from entering the component connection gaps. At the same time, it reduces friction and wear between the shielding ring 16 and the semi-circular knife assembly 5, extending their service life and ensuring long-term stable operation of the device. Example 6

[0042] This embodiment provides an octagonal dotted-line paper cutter, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] Furthermore, the through hole 8 is a countersunk hole.

[0044] In this technical solution, by setting countersunk holes, the bolt head can be completely embedded in the countersunk holes during assembly and does not protrude from the outer surface of the semi-circular cutter group 5.

[0045] This structural design avoids the problem of the bolt head protruding and scratching the cigarette box paper, ensuring that the paper can be transported smoothly during the cutting process, while preventing the bolt head from interfering with external components and improving the safety of the device operation. Example 7

[0046] This embodiment provides an octagonal dotted-line paper cutter, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0047] Furthermore, it also includes: Keyway 18: The inner ring of the tool holder 1 is provided with a keyway 18.

[0048] Through this structural design, the dimensions of the keyway 18 match the dimensions of the flat key on the external rotating shaft, employing a standard key connection design. During assembly, the flat key is embedded in the keyway 18, allowing the rotating shaft to drive the tool holder 1 to rotate while rotating, preventing slippage.

[0049] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application specification can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An octagonal dotted-line paper cutter, characterized in that, include: The tool holder (1) is divided into a shaft clamping section (2), an installation section (3) and a positioning section (4) in sequence. There are two semi-circular cutter groups (5). Both semi-circular cutter groups (5) are detachably connected to the mounting section (3) of the cutter holder (1). The outer circle of the semi-circular cutter group (5) has a blade (6). The blades (6) of the two semi-circular cutter groups (5) form a circular blade (6) coaxial with the mounting section (3). Threaded holes (7), the tool holder (1) has several threaded holes (7); Through holes (8), a number of through holes (8) are provided on the semi-circular knife assembly (5); When the semi-circular knife assembly (5) is fixedly connected to the knife holder (1), the through hole (8) and the threaded hole (7) are respectively set.

2. A rule according to claim 1, wherein Also includes: Positioning protrusion (9), the inner ring protrusion of the semi-circular knife group (5) is formed with positioning protrusion (9); Positioning groove (10): Two positioning grooves (10) are provided on the outer surface of the mounting section (3) of the tool holder (1), and the shape of the positioning groove (10) matches the positioning protrusion (9); When the semi-circular blade assembly (5) is fixedly connected to the blade holder (1), the positioning protrusion (9) is located in the positioning groove (10).

3. A rule according to claim 2, wherein Also includes: A semi-circular annular groove (11) is formed on the end face of the semi-circular cutter group (5), and the semi-circular annular grooves (11) of the two semi-circular cutter groups (5) form a circular annular groove. A positioning annular groove (12) is formed on the end face of the mounting section (3), and the positioning annular groove (12) is coaxial with the circular annular groove; The outer surface of the positioning section (4) is a threaded surface. The round nut (13) is spirally arranged on the positioning section (4). The end face of the round nut (13) is fixedly provided with a first ring (14) and a second ring (15). The first ring (14) and the second ring (15) are respectively matched with the circular ring groove and the positioning ring groove (12). When the semi-circular knife assembly (5) is fixedly connected to the knife holder (1), the first ring (14) and the second ring (15) are located in the circular ring groove and the positioning ring groove (12) respectively, and the first ring (14) and the second ring (15) are coaxial.

4. A rule according to claim 3, wherein, Also includes: A shielding ring (16) is fixedly sleeved on the outer ring of the round nut (13), and the end face of the shielding ring (16) is in contact with the end face of the semi-circular knife assembly (5).

5. A rule according to claim 4, wherein, Also includes: A sealing ring (17) is fitted on a round nut (13). One end of the sealing ring (17) abuts against the shielding ring (16), and the other end of the sealing ring (17) abuts against the semi-circular knife assembly (5).

6. A rule according to claim 5, wherein: The through hole (8) is a countersunk hole.

7. A rule according to claim 6, wherein, Also includes: Keyway (18): The inner ring of the tool holder (1) is provided with a keyway (18).

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