A cutting width adjusting mechanism of an office paper slitting machine

Abstract

The utility model discloses an office paper slitting machine slitting width adjusting mechanism, including assembly roller, assembly slide and annular tool holder. Assembly roller is equipped with the guide through groove, and the assembly slide is slidably installed in it, and the symmetrical annular tool holder is installed in the adjusting guide groove on it. The main adjusting lead screw drives the assembly slide to move axially, and the auxiliary adjusting lead screw is linked with the spline shaft, and the synchronous interval adjustment of annular tool holder is realized through the planetary gear set. The main adjusting knob and the auxiliary adjusting knob control the overall position and the tool holder interval respectively, realize quick and accurate adjustment. The mechanism solves the problem of traditional slitting machine adjusting complicated, insufficient precision, and is suitable for the efficient slitting of office paper and reel paper, and has the advantages of convenient operation and strong stability.

Description

Technical Field

[0001] This utility model relates to the field of paper cutting equipment technology, specifically to a cutting width adjustment mechanism for an office paper slitting machine. Background Technology

[0002] With the diversification of office paper demand, the market demand for paper of different widths after slitting (such as slitting A4 and A3 paper or cutting roll paper) is increasing. Traditional slitting machines usually adopt a fixed blade holder structure, which has a limited range of slitting width adjustment and is cumbersome to adjust, requiring manual disassembly and reinstallation of the blades. This is not only inefficient, but also prone to reduced slitting accuracy due to human error.

[0003] In existing technologies, some slitting machines employ adjustable blade holder structures, such as using lead screws or slide rails to achieve axial movement of the blade holder. However, the following problems still exist: 1. Limited adjustment range: Most mechanisms only support independent adjustment of a single blade holder, making it difficult to achieve synchronous and precise adjustment of multiple blade holders, resulting in poor consistency of paper width after slitting.

[0004] 2. Complex operation: It requires adjusting the tool holders one by one, and lacks a linkage mechanism, resulting in low adjustment efficiency and failing to meet the needs of rapid production changeover.

[0005] 3. Insufficient structural stability: During the slitting process, radial runout or axial offset of the cutting tool can easily lead to uneven cuts, affecting the slitting quality.

[0006] 4. Inconvenient maintenance: The adjustment mechanism of traditional slitting machines is usually integrated inside the frame, which is difficult to disassemble and clean, increasing the difficulty of maintenance and cleaning.

[0007] Therefore, there is an urgent need for a new type of slitting width adjustment mechanism that can achieve synchronous and precise adjustment of multiple sets of blade holders, while taking into account structural stability and ease of operation, so as to meet the needs of efficient and high-precision office paper slitting. Summary of the Invention

[0008] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a slitting width adjustment mechanism for office paper slitting machines, which solves the problems of cumbersome adjustment, insufficient precision and poor stability of traditional slitting machines, and realizes efficient, accurate and stable paper slitting. It is suitable for various slitting scenarios such as office paper and roll paper, and has significant practical value and market competitiveness.

[0009] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a slitting width adjustment mechanism for an office paper slitting machine, including an assembly roller, an assembly slide, and an annular knife holder. The assembly roller has a guide groove extending along the axis. The assembly slide is slidably installed in the guide groove. The assembly slide has multiple sets of adjustment guide grooves arranged in a ring array around the axis. The annular knife holder is slidably installed in the adjustment guide groove and arranged around the assembly roller. Each set of assembly slides is equipped with two sets of symmetrically arranged annular knife holders.

[0010] It also includes a main adjusting screw, a secondary adjusting screw, and a splined shaft. The main adjusting screw is rotatably mounted at the center of the guide groove and is screwed into the assembly slide. Each adjusting guide groove has a secondary adjusting screw rotatably mounted and screwed into the annular tool holder. The splined shaft is slidably inserted into the center of each secondary adjusting screw and is rotatably mounted in the guide groove.

[0011] The main adjusting screw is fixedly connected to the end of a main adjusting knob, and a secondary adjusting knob is rotatably mounted around the main adjusting knob. The secondary adjusting knob is poweredly connected to each set of splined shafts through a planetary gear set.

[0012] Based on the above technical solutions, in order to ensure that each component can be stably assembled and operated on the assembly roller, and to realize the synchronous cutting of office paper into multiple small paper rolls according to a specific width, the following technical solutions are provided.

[0013] The middle section of the assembly roller is a solid section A, and both sides are provided with the guide grooves. The guide grooves extend to the ends of the assembly roller. The ends of the assembly roller are each detachably equipped with an assembly seat and an assembly cover. The inner end of the assembly seat is fixedly connected to a nested seat that fits snugly with the guide groove. The outer end of the assembly seat is provided with an assembly cavity. The assembly cover is arranged on the outer end of the assembly seat and seals the assembly cavity.

[0014] Based on the above technical solutions, in order to ensure that the assembly slide can slide stably in the guide groove and that the adjusting screw and the two sets of annular tool holders can be stably installed on the assembly slide, the following technical solutions are provided.

[0015] The guide groove is provided with radial grooves that are radially distributed along the assembly roller and extend to the outer wall of the assembly roller. The assembly slide is arranged in the space of the guide groove and the radial groove. The middle section of the assembly slide is a solid section B, and the two sides are provided with the adjustment guide groove. The adjustment guide groove extends to the end of the assembly slide and is arranged in the radial groove. The inner edge of the annular knife holder is fixed with a guide seat that is slidably inserted with the adjustment guide groove. The middle section of the auxiliary adjustment screw is rotatably installed at the solid section B and the two ends are respectively arranged in the guide grooves on both sides. The guide seat and the auxiliary adjustment screw are screwed together.

[0016] Based on the above technical solutions, in order to ensure the stable installation of the main adjustment knob, the secondary adjustment knob, and the planetary gear set, and to realize the power connection between the secondary adjustment knob and the spline shaft, the following technical solutions are provided.

[0017] The main adjustment knob is rotatably mounted on the mounting base and extends to the outside of the mounting cover. The secondary adjustment knob is rotatably mounted on the mounting cover. The planetary gear set includes a sun gear and planetary gears arranged around the sun gear and meshing with the sun gear. The sun gear is fixedly connected to the secondary adjustment knob, and the planetary gears are fixedly connected to the spline shaft.

[0018] To ensure that the assembly rollers can be powered by the drive unit of the slitting machine, the following technical solution is provided.

[0019] The outer wall of the assembly cover is fixedly connected to a positioning guide rail, and at least one set of the assembly covers is equipped with a transmission gear, the transmission gear being nested and inserted with the assembly cover and the positioning guide rail.

[0020] Based on the above technical solutions, the following technical solutions are provided to ensure that the cutting tool for cutting paper can be stably assembled on the ring-shaped tool holder.

[0021] Both sides of the annular cutter holder are fixedly connected to screws arranged in a ring array, and annular cutters arranged through the screws are mounted on the annular cutter holder.

[0022] The beneficial effects of this utility model are: 1. Synchronous adjustment of multiple tool holders improves cutting accuracy and efficiency. The main adjusting screw drives the axial movement of the assembly slide, allowing simultaneous adjustment of the overall position of multiple sets of annular tool holders to ensure consistent cutting trajectories. Through the linkage of the secondary adjusting screw and splined shaft, in conjunction with a planetary gear set, the symmetrically distributed annular tool holders can move relative to or away from each other, precisely controlling the cutting width and avoiding the errors of traditional manual adjustments. It can also complete multiple cuts simultaneously to meet the processing needs of different width specifications, significantly improving production efficiency.

[0023] 2. Modular design facilitates installation and maintenance. The assembly roller adopts a detachable assembly base and assembly cover, which facilitates the installation and maintenance of the internal adjustment mechanism. The combination design of guide groove and radial groove allows the assembly slide and ring cutter holder to slide stably on the assembly roller, while facilitating the disassembly and replacement of the cutter. The planetary gear set is integrated into the assembly cavity, reducing external interference and improving the reliability of the mechanism operation.

[0024] 3. Stable transmission ensures slitting quality. Two sets of assembly rollers are matched and connected to the slitting machine drive equipment through transmission gears to achieve double rollers running in opposite directions at the same speed, ensuring the smoothness of paper cutting. The annular cutter holder uses a screw to fix the annular cutter, ensuring that the cutter is firmly installed, reducing vibration or deviation during the cutting process, and improving the flatness of the cut. The sliding plug-in design of the spline shaft and the secondary adjusting screw ensures that the power transmission is not affected when adjusting the blade holder spacing, ensuring the stability of the adjustment process.

[0025] 4. Easy to operate and adaptable to rapid production changeover needs. The main adjustment knob (hexagonal countersink) and the secondary adjustment knob (hexagonal base) are externally designed for easy and quick adjustment without the need for complicated tools. The tool holder assembly can be moved as a whole by rotating the main adjustment knob, and the symmetrical tool holder spacing can be finely adjusted by rotating the secondary adjustment knob, realizing one-click width adjustment and greatly shortening production changeover time. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a detailed schematic diagram of the present invention in a cross-sectional state; Figure 3 This is a schematic diagram of the assembly roller combined with the main adjusting screw and splined shaft. Figure 4 A structural schematic diagram of the mounting base, mounting cover, and the components assembled therein; Figure 5 A schematic diagram of the main / secondary adjustment knob and the planetary gear set assembly; Figure 6 A schematic diagram of the assembly of the slide block, the ring tool holder, and the auxiliary adjusting screw; Figure 7 This is a schematic diagram of the ring-shaped tool holder and the components assembled on it.

[0027] In the diagram: 1 Assembly roller, 11 Guide groove, 111 Radial groove, 12 Solid section A, 13 Assembly seat, 131 Nested seat, 132 Assembly cavity, 133 Rotating ring groove, 14 Assembly cover, 141 Positioning guide rail, 142 Transmission gear, 2 Assembly slide, 21 Adjusting guide groove, 22 Solid section B, 3 Annular cutter holder, 31 Guide seat, 32 Screw, 33 Annular cutter, 4 Main adjusting screw, 5 Secondary adjusting screw, 6 Splined shaft, 71 Main adjusting knob, 72 Secondary adjusting knob, 73 Planetary gear set, 731 Sun gear, 732 Planetary gear. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-7 An office paper slitting machine slitting width adjustment mechanism includes an assembly roller 1, an assembly slide 2, and an annular knife holder 3. The assembly roller 1 has a guide groove 11 extending along the axis. The assembly slide 2 is slidably installed in the guide groove 11. The assembly slide 2 has multiple sets of adjustment guide grooves 21 arranged in a ring array around the axis. The annular knife holder 3 is slidably installed in the adjustment guide grooves 21 and arranged around the assembly roller 1. Each set of assembly slides 2 is equipped with two sets of symmetrically arranged annular knife holders 3.

[0030] It also includes a main adjusting screw 4, a secondary adjusting screw 5, and a splined shaft 6. The main adjusting screw 4 is rotatably installed at the axis of the guide groove 11 and is screwed into the assembly slide 2. Each adjusting guide groove 21 has a secondary adjusting screw 5 that is screwed into the annular tool holder 3. Each secondary adjusting screw 5 has a splined shaft 6 that is slidably inserted into the axis of the axis. The splined shaft 6 is rotatably installed in the guide groove 11.

[0031] The end of the main adjusting screw 4 is fixedly connected to the main adjusting knob 71, and the outer periphery of the main adjusting knob 71 is rotatably mounted with the auxiliary adjusting knob 72. The auxiliary adjusting knob 72 is connected to each set of splined shafts 6 through the planetary gear set 73.

[0032] Assembly roller 1 is rotatably mounted on the frame of the slitting machine and powered by the drive unit of the slitting machine to ensure that the remaining components can be stably assembled and operated on it. Assembly roller 1 is usually provided with two sets arranged in parallel so that the office paper being slit can pass through the gap between the two sets of assembly roller 1, and then the cutter mounted on the annular cutter holder 3 completes the continuous and effective cutting of the office paper.

[0033] When the main adjusting knob 71 is operated to drive the main adjusting screw 4, the adjusting slide and the two sets of annular blade holders 3 mounted on it can be axially adjusted synchronously. During the synchronous axial movement of the adjusting slide and the secondary adjusting screw 5 rotatably mounted on it, the spline shaft 6 always maintains a sliding engagement with the secondary adjusting screw 5. Therefore, when the planetary gear set 73 and each spline shaft 6 are driven to operate by operating the secondary adjusting knob 72, the power of the spline shaft 6 can always be transmitted to the secondary adjusting screw 5 and drive each set of related secondary adjusting screws 5 to operate synchronously, so as to drive the two sets of symmetrically distributed annular blade holders 3 to operate synchronously in a relative or opposite manner. By adjusting the distance between the two sets of annular blade sets, the width of the office paper being cut can be effectively adjusted.

[0034] To ensure that all components can be stably assembled and operated on the assembly roller 1, and to achieve the synchronous cutting of office paper into multiple small paper rolls according to a specific width, the following technical solution is provided.

[0035] The middle section of the assembly roller 1 is a solid section A12, and both sides are provided with guide grooves 11. The guide grooves 11 extend to the ends of the assembly roller 1. The ends of the assembly roller 1 are each detachably equipped with an assembly seat 13 and an assembly cover 14. The inner end of the assembly seat 13 is fixedly connected to a nested seat 131 that is nested and fits the guide groove 11. The outer end of the assembly seat 13 is provided with an assembly cavity 132. The assembly cover 14 is arranged on the outer end of the assembly seat 13 and seals the assembly cavity 132.

[0036] The mounting base 13 is screwed to the end wall of the assembly roller 1 by a bolt arranged in the assembly cavity 132, thereby ensuring that the nested base 131 is inserted into the end of the guide groove 11, so as to block and effectively support the end of the guide groove 11 and avoid structural deformation of the assembly roller 1 due to the processing of the guide groove 11.

[0037] A rotating annular groove 133 is provided on the outer edge of the assembly base 13. The rotating annular groove 133 can be stably installed on the frame of the slitting machine in a relatively rotating posture, thereby ensuring that the assembly roller 1 rotates stably around its own axis.

[0038] The assembly cover 14 is screwed onto the assembly base 13 by bolt No. 2 and is matched with the assembly cavity 132 to ensure that the main adjustment knob 71, the secondary adjustment knob 72, and the planetary gear set 73 are stably installed here.

[0039] During the installation phase, the mounting base 13 and mounting cover 14 can be removed first to facilitate the effective installation of the mounting slide 2, annular cutter holder 3, main adjusting screw 4, secondary adjusting screw 5, and splined shaft 6 on the mounting roller 1. The two ends of the main adjusting screw 4 and splined shaft 6 are respectively rotatably connected to the solid section A12 of the mounting roller 1 and the mounting base 13.

[0040] Two sets of guide grooves 11 are provided on the assembly roller 1, so two sets of assembly slides 2 and annular cutter holders 3 can be provided. The main adjustment knob 71 and the auxiliary adjustment knob 72 installed at both ends of the assembly roller 1 adjust the position and posture of the assembly slides 2 and annular cutter holders 3 on the corresponding side, respectively.

[0041] By adjusting the position and orientation of the assembly slide 2 and the spacing between the two sets of annular cutter holders 3 on the assembly slide 2, the incoming office paper can be cut into four slitting tracks simultaneously, thus cutting the office paper into five small paper rolls of a specific width. The width of each small paper roll can be designed independently to suit different usage scenarios.

[0042] To ensure that the assembly slide 2 can slide stably in the guide groove 11, and to ensure that the adjusting screw and the two sets of annular tool holders 3 can be stably installed on the assembly slide 2, the following technical solution is provided.

[0043] The guide groove 11 is provided with radial grooves 111 that are radially distributed along the assembly roller 1 and extend to the outer wall of the assembly roller 1. The assembly slide 2 is arranged in the space of the guide groove 11 and the radial groove 111. The middle section of the assembly slide 2 is a solid section B22, and both sides are provided with adjustment guide grooves 21. The adjustment guide grooves 21 extend to the end of the assembly slide 2 and are arranged in the radial groove 111. The inner edge of the annular knife holder 3 is fixedly connected with a guide seat 31 that is slidably inserted with the adjustment guide groove 21. The middle section of the auxiliary adjusting screw 5 is rotatably installed at the solid section B22 and both ends are respectively arranged in the guide grooves 11 on both sides. The guide seat 31 is screwed to the auxiliary adjusting screw 5.

[0044] The arrangement of the radial through groove 111 allows the assembly slide 2 to extend to the outside of the assembly roller 1, thereby enabling the annular cutter holder 3 to be effectively arranged around the assembly roller 1 while being installed on the assembly slide 2. Extending the adjusting guide groove 21 to the end of the assembly slide 2 facilitates the assembly of the annular cutter holder 3 from both ends of the assembly slide 2.

[0045] The auxiliary adjusting screw 5 is provided with two threaded grooves with opposite spiral directions. The two threaded grooves are respectively arranged in the adjusting guide grooves 21 on both sides of the assembly slide 2. When each auxiliary adjusting screw 5 is driven to operate synchronously, it can drive the two sets of annular knife holders 3 to always keep sliding in opposite directions synchronously.

[0046] To ensure the stable installation of the main adjustment knob 71, the secondary adjustment knob 72, and the planetary gear set 73, and to achieve the power connection between the secondary adjustment knob 72 and the spline shaft 6, the following technical solution is provided.

[0047] The main adjustment knob 71 is rotatably mounted on the mounting base 13 and extends to the outside of the mounting cover 14. The secondary adjustment knob 72 is rotatably mounted on the mounting cover 14. The planetary gear set 73 includes a sun gear 731 and planet gears 732 arranged around the sun gear 731 and meshing with the sun gear 731. The sun gear 731 is fixedly connected to the secondary adjustment knob 72, and the planet gears 732 are fixedly connected to the spline shaft 6.

[0048] Both the sun gear 731 and the planet gear 732 are arranged in the assembly cavity 132 and sealed by the assembly cover 14 to prevent them from being affected by external environmental interference and thus their stable operation. The main adjustment knob 71 has a hexagonal recess at its shaft center for easy turning. Since the auxiliary adjustment knob 72 is arranged around the main adjustment knob 71, its outer wall is fixed with a hexagonal seat for easy turning.

[0049] When the sun gear 731 is driven to rotate by the secondary adjustment knob 72, it can drive each set of planetary gears 732 and spline shaft 6 to rotate synchronously, so as to stably transmit power to each set of secondary adjustment screws 5.

[0050] To ensure that the assembly roller 1 can be powered to connect with the drive equipment of the slitting machine, the following technical solution is provided.

[0051] The outer wall of the mounting cover 14 is fixedly connected to the positioning guide rail 141, and at least one set of mounting covers 14 is equipped with a transmission gear 142, which is nested and inserted with the mounting cover 14 and the positioning guide rail 141.

[0052] The transmission gear 142 can be assembled to the outer edge of the mounting cover 14 by plugging it in, and the transmission gear 142 can be accurately positioned by the positioning guide rail 141. Finally, the transmission gear 142 is fixedly connected by the No. 3 bolt that is screwed to the mounting cover 14.

[0053] The transmission gear 142 can be connected to the gear system of the slitting machine drive equipment for power connection, thereby enabling the drive equipment to drive the transmission gear 142 and the assembly roller 1 to operate stably.

[0054] The transmission gears 142 mounted on the two sets of assembly rollers 1 can also mesh together, thereby enabling the two sets of assembly rollers 1 to rotate in opposite directions at the same speed.

[0055] To ensure that the paper-cutting tool can be stably mounted on the ring-shaped tool holder 3, the following technical solution is provided.

[0056] Both sides of the annular cutter holder 3 are fixedly connected to screws 32 arranged in a ring array, and the annular cutter holder 3 is equipped with annular cutters 33 arranged through the screws 32.

[0057] The annular cutter holders 3 on both sets of assembly rollers 1 are used to fix the annular cutter 33. The annular cutter 33 is effectively fixed by screwing the nut on the screw 32. During the continuous paper conveying and the continuous reverse rotation of the two sets of assembly rollers 1, the two sets of cooperating annular cutters 33 can effectively cut the paper.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A slitting width adjustment mechanism for an office paper slitting machine, characterized in that: The assembly includes an assembly roller (1), an assembly slide (2), and an annular cutter holder (3). The assembly roller (1) has a guide groove (11) extending along the axis. The assembly slide (2) is slidably installed in the guide groove (11). The assembly slide (2) has multiple sets of adjusting guide grooves (21) arranged in a ring array around the axis. The annular cutter holder (3) is slidably installed in the adjusting guide groove (21) and arranged around the assembly roller (1). Each assembly slide (2) is equipped with two sets of symmetrically arranged annular cutter holders (3). It also includes a main adjusting screw (4), a secondary adjusting screw (5), and a splined shaft (6). The main adjusting screw (4) is rotatably installed at the center of the guide groove (11) and is screwed to the assembly slide (2). Each adjusting guide groove (21) is rotatably installed with a secondary adjusting screw (5) that is screwed to the annular cutter holder (3). The splined shaft (6) is slidably inserted at the center of each secondary adjusting screw (5). The splined shaft (6) is rotatably installed in the guide groove (11). The main adjusting screw (4) is fixedly connected to a main adjusting knob (71) at its end. A secondary adjusting knob (72) is rotatably mounted around the main adjusting knob (71). The secondary adjusting knob (72) is connected to each set of splined shafts (6) via a planetary gear set (73).

2. The slitting width adjustment mechanism for an office paper slitting machine according to claim 1, characterized in that: The middle section of the assembly roller (1) is a solid section A (12), and both sides are provided with the guide groove (11). The guide groove (11) extends to the end of the assembly roller (1). The end of the assembly roller (1) is equipped with an assembly seat (13) and an assembly cover (14) in a detachable manner. The inner end of the assembly seat (13) is fixed with a nesting seat (131) that is nested and fits with the guide groove (11). The outer end of the assembly seat (13) is provided with an assembly cavity (132). The assembly cover (14) is arranged on the outer end of the assembly seat (13) and seals the assembly cavity (132).

3. The slitting width adjustment mechanism for an office paper slitting machine according to claim 2, characterized in that: The guide groove (11) is provided with radial grooves (111) that are radially distributed along the assembly roller (1) and extend to the outer wall of the assembly roller (1). The assembly slide (2) is arranged in the space of the guide groove (11) and the radial groove (111). The middle section of the assembly slide (2) is a solid section B (22), and the two sides are provided with the adjustment guide groove (21). The adjustment guide groove (21) extends to the end of the assembly slide (2) and is arranged in the radial groove (111). The inner edge of the annular knife holder (3) is fixed with a guide seat (31) that is slidably inserted with the adjustment guide groove (21). The middle section of the auxiliary adjustment screw (5) is rotatably installed at the solid section B (22), and the two ends are respectively arranged in the guide grooves (11) on both sides. The guide seat (31) is screwed to the auxiliary adjustment screw (5).

4. The slitting width adjustment mechanism for an office paper slitting machine according to claim 2, characterized in that: The main adjustment knob (71) is rotatably mounted on the mounting base (13) and extends to the outside of the mounting cover (14). The secondary adjustment knob (72) is rotatably mounted on the mounting cover (14). The planetary gear set (73) includes a sun gear (731) and planet gears (732) arranged around the sun gear (731) and meshing with the sun gear (731). The sun gear (731) is fixedly connected to the secondary adjustment knob (72), and the planet gears (732) are fixedly connected to the spline shaft (6).

5. The slitting width adjustment mechanism for an office paper slitting machine according to claim 2, characterized in that: The outer wall of the assembly cover (14) is fixedly connected to a positioning guide rail (141), and at least one set of the assembly covers (14) is equipped with a transmission gear (142), the transmission gear (142) and the assembly cover (14) and the positioning guide rail (141) are nested and inserted.

6. The slitting width adjustment mechanism for an office paper slitting machine according to claim 1, characterized in that: Both sides of the annular cutter holder (3) are fixedly connected to screws (32) arranged in an annular array, and the annular cutter holder (3) is equipped with an annular cutter (33) that passes through the screws (32).

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