Press-cutting type slitting knife rest structure

Abstract

The utility model discloses a press-cutting type slitting knife rest structure, and aims to overcome the defect that a lateral screw on a knife rest has a deflection force according to the rotating direction when being locked, so that the knife rest slightly deviates when being mounted. The tool rest comprises a tool rest body, an installation hole is formed in the tool rest body, a locking pressing strip is arranged on the inner wall of the installation hole, one end of the locking pressing strip is connected with the tool rest body, the other end of the locking pressing strip is suspended and serves as a free end, a lock hole is formed in the side direction of the tool rest body and connected with a set screw, and an abutting ball is installed between the set screw and the free end of the locking pressing strip. According to the press-cutting type slitting knife rest structure, the influence of rotating force on the knife rest in the lateral screw locking process is reduced, the perpendicularity between the slitting knife and the rotating shaft is improved, and the slitting quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of knife holder technology, and more specifically, it relates to a pressure-cutting slitting knife holder structure. Background Technology

[0002] Currently, material slitting generally uses slitting blades, which are mounted on a blade holder, which in turn is mounted on a rotating shaft. The rotating shaft rotates, causing the slitting blade to rotate and thus slitting the material. After the blade holder is installed on the rotating shaft, it needs to be tightened with lateral screws. When tightening these screws, a biasing force is applied according to the direction of rotation. This force causes a slight misalignment of the blade holder during installation, resulting in the slitting blade and rotating shaft not being perpendicular, thus affecting the slitting quality. For example, Chinese patent application number 2019112380502 discloses a quick-install slitting machine blade clamp and blade holder. The locking bolt passes through a through hole and acts on the contact point of the pressing strip located on the outer surface between its free end and fixed end. This means the locking bolt directly contacts the pressing strip. During rotation, the locking bolt applies a biasing force, which causes a slight misalignment of the cutting disc seat during installation. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a pressure-cutting slitting blade holder structure, which reduces the influence of rotational force on the blade holder during the tightening of the lateral screws, improves the perpendicularity between the slitting blade and the rotating shaft, and helps to improve the slitting quality.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a pressure-cutting slitting blade holder structure, including a blade holder body, a mounting hole provided on the blade holder body, a locking strip provided on the inner wall of the mounting hole, one end of the locking strip being connected to the blade holder body, and the other end of the locking strip being suspended as a free end, a locking hole provided on the side of the blade holder body, a set screw being connected to the locking hole, and an abutment ball being installed between the set screw and the free end of the locking strip.

[0005] During installation, the cutter holder body is connected to the rotating shaft through its mounting holes. Then, the set screw is tightened. As the set screw rotates, it pushes the abutment ball towards the locking strip, clamping the locking strip onto the outer wall of the rotating shaft, thus positioning the cutter holder body. During tightening, the set screw transmits pressure to the abutment ball. Because the abutment ball can rotate, the rotational force is not transmitted to the locking strip or the cutter holder body. The locking strip is only subjected to longitudinal pressure, preventing the cutter holder body from shifting due to rotational force and affecting the perpendicularity between the slitting blade and the rotating shaft.

[0006] The pressure-cutting slitting blade holder structure of this patent application reduces the influence of rotational force on the blade holder during the tightening of the lateral screws, improves the perpendicularity between the slitting blade and the rotating shaft, and is beneficial to improving the slitting quality.

[0007] Preferably, the blade holder body is connected to the cover plate, and a slitting disc is provided between the cover plate and the blade holder body.

[0008] The slitting disc is installed between the cover plate and the blade holder body, ensuring stability and reliability.

[0009] Preferably, gaskets are installed between the slitting disc and the cover plate, as well as between the slitting disc and the blade holder body.

[0010] The gaskets position the slitting disc, ensuring that the clamping force on the slitting disc is uniform and reliable.

[0011] Preferably, the cover plate is circumferentially connected with several positioning screws, and the ends of the positioning screws abut against the gasket to achieve axial positioning of the slitting disc.

[0012] The cover plate is connected to positioning screws. The axial positioning of the slitting disc is achieved by the abutment setting between the positioning screws and the gaskets, which is convenient and reliable.

[0013] Preferably, a positioning protrusion is provided on the blade holder body, and the slitting blade disc is fitted and connected to the positioning protrusion.

[0014] The positioning convex ring facilitates the precise and reliable installation of the slitting disc and prevents radial wobble of the slitting disc.

[0015] Preferably, the cover plate is provided with a connecting hole, and a number of quick-release protrusions are provided on the inner wall of the connecting hole. The tool holder body is provided with a quick-release ring, and a quick-release locking strip protruding outward is provided on the outer wall of the quick-release ring. The cover plate is rotated to make the quick-release protrusions lock into the quick-release locking strip.

[0016] The connecting holes on the cover plate facilitate connection with the tool holder body. During assembly, the cover plate is inserted into the quick-release ring, and then rotated to engage the quick-release cam with the quick-release clip, thus achieving axial positioning between the cover plate and the tool holder body. The assembly and connection between the cover plate and the tool holder body is convenient and reliable.

[0017] Preferably, a V-groove is provided on the free end sidewall of the locking strip, and the abutting ball abuts against the V-groove.

[0018] The V-shaped design facilitates reliable contact between the abutment ball and the locking strip.

[0019] Preferably, a circumferentially extending groove is cut into the inner wall of the mounting hole to form a locking strip, and one end of the groove is bent outward to form a reinforcing part at the end of the locking strip.

[0020] A locking strip is formed by creating fine grooves. The free end of the locking strip can be pushed to clamp onto the rotating shaft, thus positioning the tool holder body. The reinforcement section helps to improve the connection strength between the locking strip and the tool holder body.

[0021] Preferably, the end of the set screw is an abutment plane, and the abutment plane is together with the abutment ball.

[0022] The contact surface directly contacts the contact ball, thereby pushing the contact ball to move in the opposite direction to the locking strip, thus pressing the locking strip.

[0023] Another option is to provide a hemispherical rotating groove at the end of the set screw, with one half of the abutment ball rotated and installed in the rotating groove, and a positioning ring fastened to the lower end of the set screw, with the positioning ring fitted around the abutment ball.

[0024] A locating ring is fastened to the lower end of the set screw, thereby positioning the abutment ball and preventing it from detaching from the set screw. This design ensures the abutment ball remains connected to the set screw, facilitating assembly and preventing the abutment ball from being missing.

[0025] Compared with the prior art, the beneficial effects of this utility model are: (1) The pressure-cutting slitting blade holder structure of this patent application reduces the influence of rotational force on the blade holder during the side screw tightening process, improves the perpendicularity between the slitting blade and the rotating shaft, and is conducive to improving the slitting quality; (2) The axial positioning of the slitting blade disc is realized by the abutting setting of the positioning screw and the washer, which is convenient and reliable; (3) Rotating the cover plate makes the quick-release protrusion snap into the quick-release clip, thereby realizing the axial positioning of the cover plate and the blade holder body, which is convenient and reliable for assembly and connection. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is an exploded view of this utility model.

[0028] Figure 3 This is a cross-sectional view of the set screw in Embodiment 1 of this utility model.

[0029] Figure 4 This is a cross-sectional view of the positioning screw of this utility model.

[0030] Figure 5 This is a cross-sectional view of the tool holder body of Embodiment 1 of this utility model.

[0031] Figure 6 This is a cross-sectional view of the tool holder body in Embodiment 2 of this utility model.

[0032] Figure 7 This is a cross-sectional view of the set screw in Embodiment 3 of this utility model.

[0033] In the diagram: 1. Tool holder body, 2. Mounting hole, 3. Locking strip, 4. Free end, 5. Groove, 6. Reinforcing part, 7. Locking hole, 8. Set screw, 9. Abutting ball, 10. Abutting part, 11. Limiting protrusion, 12. Limiting groove, 13. V-groove, 14. Pushing gap, 15. Abutting plane, 16. Cover plate, 17. Slitting blade disc, 18. Gasket, 19. Positioning protrusion, 20. Positioning screw, 21. Connecting hole, 22. Quick-release protrusion, 23. Quick-release protrusion ring, 24. Quick-release retaining strip, 25. Clearance notch, 26. Rotating groove, 27. Positioning ring, 28. Preload spring. Detailed Implementation

[0034] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0035] Example 1: A pressure-cutting slitting blade holder structure (see...) Figures 1 to 5 The tool holder includes a tool holder body 1, which has a ring-shaped structure. The tool holder body 1 has mounting holes 2, and a locking strip 3 is installed on the inner wall of the mounting holes 2. One end of the locking strip 3 is connected to the tool holder body 1, and the other end is suspended as a free end 4. The locking strip 3 is integral with the tool holder body 1. A circumferentially extending groove 5 is cut into the inner wall of the mounting holes 2 to form the locking strip 3. One end of the groove 5 is bent outwards to form a reinforcing part 6 at the end of the locking strip 3, thereby improving the connection strength between the end of the locking strip 3 and the tool holder body 1. A locking hole 7 is provided laterally on the tool holder body 1. The locking hole 7 is a threaded hole, radially positioned, and connected to a set screw 8. An abutment ball 9 is installed between the set screw 8 and the free end 4 of the locking strip 3.

[0036] The free end 4 of the locking strip 3 extends outward to form an abutment portion 10. A circumferentially protruding limiting protrusion 11 is provided at the end of the free end 4. A limiting groove 12 is provided on the inner wall of the groove 5, and the limiting protrusion 11 is placed in the limiting groove 12. A push-pull gap 14 is reserved between the side walls of the limiting protrusion 11 and the limiting groove 12, providing space for radial movement of the free end 4 of the locking strip 3. A V-shaped groove 13 is provided on the side wall of the free end 4 of the locking strip 3, and the abutment ball 9 abuts against the V-shaped groove 13. The V-shaped groove 13 is provided on the abutment portion 10. The V-shaped design facilitates reliable abutment between the abutment ball 9 and the locking strip 3. The end of the set screw 8 is an abutment plane 15, which abuts against the abutment ball 9.

[0037] The blade holder body 1 is connected to a cover plate 16. A slitting disc 17 is disposed between the cover plate 16 and the blade holder body 1. The cover plate 16 has an annular structure. Gaskets 18 are installed between the slitting disc 17 and the cover plate 16, and between the slitting disc 17 and the blade holder body 1. Both the slitting disc 17 and the gaskets 18 have annular structures. A positioning protrusion ring 19 is provided on the blade holder body 1. The slitting disc 17 and the gaskets 18 are fitted and connected to the positioning protrusion ring 19. The positioning protrusion ring 19 facilitates the accurate and reliable installation of the slitting disc 17 and prevents radial wobbling of the slitting disc 17. The outer diameters of the gaskets 18, the blade holder body 1, and the cover plate 16 are all smaller than the outer diameter of the slitting disc 17. A cutting edge is provided on the outer edge of the slitting disc 17.

[0038] A number of positioning screws 20 are evenly distributed around the cover plate 16. The ends of the positioning screws 20 abut against the gasket 18 to achieve axial positioning of the slitting disc 17. In this embodiment, four positioning screws 20 are provided. The positioning screws 20 connected to the cover plate 16, and the axial positioning of the slitting disc 17 is achieved through the abutment of the positioning screws 20 against the gasket 18, which is convenient and reliable.

[0039] The cover plate 16 has connecting holes 21, and several quick-release protrusions 22 are provided on the inner wall of the connecting holes 21. The tool holder body 1 has a quick-release ring 23, and a quick-release retaining strip 24 protruding outwards is provided on the outer wall of the quick-release ring 23. Four quick-release protrusions 22 and quick-release retaining strips 24 are evenly distributed circumferentially. The cover plate 16 rotates to engage the quick-release protrusions 22 with the quick-release retaining strips 24. A clearance notch 25 is provided between adjacent quick-release retaining strips 24 on the outer wall of the quick-release ring 23 to allow the quick-release protrusions 22 to pass.

[0040] The connecting hole 21 on the cover plate 16 facilitates connection with the tool holder body 1. When assembling the cover plate 16 and the tool holder body 1, align the quick-release protrusion 22 on the cover plate 16 with the clearance notch 25, insert it into the quick-release protrusion 23, and then rotate the cover plate 16 to engage the quick-release protrusion 22 with the quick-release clip 24, thereby achieving axial positioning of the cover plate 16 and the tool holder body 1. The assembly and connection of the cover plate 16 and the tool holder body 1 is convenient and reliable. Afterwards, connect the positioning screw 20, causing the positioning screw 20 to abut against the washer 18 for positioning, thereby achieving axial positioning of the slitting disc 17.

[0041] When installing the blade holder body 1, it connects to the rotating shaft through the mounting hole 2. Then, by tightening the set screw 8, the set screw 8 pushes the abutment ball 9 towards the locking strip 3, thereby clamping the locking strip 3 onto the outer wall of the rotating shaft, thus positioning the blade holder body 1. During the tightening process, the set screw transmits pressure to the abutment ball 9. Since the abutment ball 9 can rotate, the rotational force is not transmitted to the locking strip 3 and the blade holder body 1. The locking strip 3 is only subjected to longitudinal pressure, preventing the blade holder body 1 from shifting due to rotational force and affecting the perpendicularity between the slitting blade and the rotating shaft.

[0042] Example 2: A pressure-cutting slitting blade holder structure (see...) Figure 1 , Figure 2 , Figure 4 , Figure 6 The tool holder includes a tool holder body 1, which has a ring-shaped structure. The tool holder body 1 has mounting holes 2, and a locking strip 3 is installed on the inner wall of the mounting holes 2. One end of the locking strip 3 is connected to the tool holder body 1, and the other end is suspended as a free end 4. The locking strip 3 is integral with the tool holder body 1. A circumferentially extending groove 5 is cut into the inner wall of the mounting holes 2 to form the locking strip 3. One end of the groove 5 is bent outwards to form a reinforcing part 6 at the end of the locking strip 3, thereby improving the connection strength between the end of the locking strip 3 and the tool holder body 1. A locking hole 7 is provided laterally on the tool holder body 1. The locking hole 7 is a threaded hole, radially positioned, and connected to a set screw 8. An abutment ball 9 is installed between the set screw 8 and the free end 4 of the locking strip 3.

[0043] The free end 4 of the locking strip 3 extends outward to form an abutment portion 10. A circumferentially protruding limiting protrusion 11 is provided at the end of the free end 4. A limiting groove 12 is provided on the inner wall of the groove 5. The limiting protrusion 11 is placed in the limiting groove 12. A push-pull gap 14 is reserved between the side walls of the limiting protrusion 11 and the limiting groove 12, providing space for radial movement of the free end 4 of the locking strip 3. A V-shaped groove 13 is provided on the side wall of the free end 4 of the locking strip 3. The abutment ball 9 abuts against the V-shaped groove 13, which is located on the abutment portion 10. The V-shaped groove facilitates reliable abutment between the abutment ball 9 and the locking strip 3. A hemispherical rotating groove 26 is provided at the end of the set screw 8. Half of the abutment ball 9 is rotatably installed in the rotating groove 26. A positioning ring 27 is fastened to the lower end of the set screw 8, and the positioning ring 27 is fitted around the abutment ball 9. The lower end of the set screw 8 is fastened to the positioning ring 27, thereby positioning the abutment ball 9 and preventing the abutment ball 9 from disengaging from the set screw 8. This structural design ensures that the abutment ball 9 is always connected to the set screw 8, facilitating assembly and preventing the abutment ball 9 from being omitted.

[0044] The blade holder body 1 is connected to a cover plate 16. A slitting disc 17 is disposed between the cover plate 16 and the blade holder body 1. The cover plate 16 has an annular structure. Gaskets 18 are installed between the slitting disc 17 and the cover plate 16, and between the slitting disc 17 and the blade holder body 1. Both the slitting disc 17 and the gaskets 18 have annular structures. A positioning protrusion ring 19 is provided on the blade holder body 1. The slitting disc 17 and the gaskets 18 are fitted and connected to the positioning protrusion ring 19. The positioning protrusion ring 19 facilitates the accurate and reliable installation of the slitting disc 17 and prevents radial wobbling of the slitting disc 17. The outer diameters of the gaskets 18, the blade holder body 1, and the cover plate 16 are all smaller than the outer diameter of the slitting disc 17. A cutting edge is provided on the outer edge of the slitting disc 17.

[0045] A number of positioning screws 20 are evenly distributed around the cover plate 16. The ends of the positioning screws 20 abut against the gasket 18 to achieve axial positioning of the slitting disc 17. In this embodiment, four positioning screws 20 are provided. The positioning screws 20 connected to the cover plate 16, and the axial positioning of the slitting disc 17 is achieved through the abutment of the positioning screws 20 against the gasket 18, which is convenient and reliable.

[0046] The cover plate 16 has connecting holes 21, and several quick-release protrusions 22 are provided on the inner wall of the connecting holes 21. The tool holder body 1 has a quick-release ring 23, and a quick-release retaining strip 24 protruding outwards is provided on the outer wall of the quick-release ring 23. Four quick-release protrusions 22 and quick-release retaining strips 24 are evenly distributed circumferentially. The cover plate 16 rotates to engage the quick-release protrusions 22 with the quick-release retaining strips 24. A clearance notch 25 is provided between adjacent quick-release retaining strips 24 on the outer wall of the quick-release ring 23 to allow the quick-release protrusions 22 to pass.

[0047] The connecting hole 21 on the cover plate 16 facilitates connection with the tool holder body 1. When assembling the cover plate 16 and the tool holder body 1, align the quick-release protrusion 22 on the cover plate 16 with the clearance notch 25, insert it into the quick-release protrusion 23, and then rotate the cover plate 16 to engage the quick-release protrusion 22 with the quick-release clip 24, thereby achieving axial positioning of the cover plate 16 and the tool holder body 1. The assembly and connection of the cover plate 16 and the tool holder body 1 is convenient and reliable. Afterwards, connect the positioning screw 20, causing the positioning screw 20 to abut against the washer 18 for positioning, thereby achieving axial positioning of the slitting disc 17.

[0048] When installing the blade holder body 1, it connects to the rotating shaft through the mounting hole 2. Then, by tightening the set screw 8, the set screw 8 pushes the abutment ball 9 towards the locking strip 3, thereby clamping the locking strip 3 onto the outer wall of the rotating shaft, thus positioning the blade holder body 1. During the tightening process, the set screw transmits pressure to the abutment ball 9. Since the abutment ball 9 can rotate, the rotational force is not transmitted to the locking strip 3 and the blade holder body 1. The locking strip 3 is only subjected to longitudinal pressure, preventing the blade holder body 1 from shifting due to rotational force and affecting the perpendicularity between the slitting blade and the rotating shaft.

[0049] Example 3: A pressure-cutting slitting blade holder structure (see...) Figure 1 , Figure 2 , Figure 7The tool holder includes a tool holder body 1, which has a ring-shaped structure. The tool holder body 1 has mounting holes 2, and a locking strip 3 is installed on the inner wall of the mounting holes 2. One end of the locking strip 3 is connected to the tool holder body 1, and the other end is suspended as a free end 4. The locking strip 3 is integral with the tool holder body 1. A circumferentially extending groove 5 is cut into the inner wall of the mounting holes 2 to form the locking strip 3. One end of the groove 5 is bent outwards to form a reinforcing part 6 at the end of the locking strip 3, thereby improving the connection strength between the end of the locking strip 3 and the tool holder body 1. A locking hole 7 is provided laterally on the tool holder body 1. The locking hole 7 is a threaded hole, radially positioned, and connected to a set screw 8. An abutment ball 9 is installed between the set screw 8 and the free end 4 of the locking strip 3.

[0050] The free end 4 of the locking strip 3 extends outward to form an abutment portion 10. A circumferentially protruding limiting protrusion 11 is provided at the end of the free end 4. A limiting groove 12 is provided on the inner wall of the groove 5, and the limiting protrusion 11 is placed in the limiting groove 12. A push-pull gap 14 is reserved between the side walls of the limiting protrusion 11 and the limiting groove 12, providing space for radial movement of the free end 4 of the locking strip 3. A V-shaped groove 13 is provided on the side wall of the free end 4 of the locking strip 3, and the abutment ball 9 abuts against the V-shaped groove 13. The V-shaped groove 13 is provided on the abutment portion 10. The V-shaped design facilitates reliable abutment between the abutment ball 9 and the locking strip 3. The end of the set screw 8 is an abutment plane 15, which abuts against the abutment ball 9.

[0051] The blade holder body 1 is connected to a cover plate 16. A slitting disc 17 is disposed between the cover plate 16 and the blade holder body 1. The cover plate 16 has an annular structure. Gaskets 18 are installed between the slitting disc 17 and the cover plate 16, and between the slitting disc 17 and the blade holder body 1. Both the slitting disc 17 and the gaskets 18 have annular structures. A positioning protrusion ring 19 is provided on the blade holder body 1. The slitting disc 17 and the gaskets 18 are fitted and connected to the positioning protrusion ring 19. The positioning protrusion ring 19 facilitates the accurate and reliable installation of the slitting disc 17 and prevents radial wobbling of the slitting disc 17. The outer diameters of the gaskets 18, the blade holder body 1, and the cover plate 16 are all smaller than the outer diameter of the slitting disc 17. A cutting edge is provided on the outer edge of the slitting disc 17.

[0052] A number of positioning screws 20 are evenly distributed around the cover plate 16. The ends of the positioning screws 20 abut against the gasket 18 to achieve axial positioning of the slitting disc 17. In this embodiment, four positioning screws 20 are provided. The positioning screws 20 connected to the cover plate 16, and the axial positioning of the slitting disc 17 is achieved through the abutment of the positioning screws 20 against the gasket 18, which is convenient and reliable.

[0053] A connecting hole 21 is provided on the cover plate 16, and several quick-release protrusions 22 are provided on the inner wall of the connecting hole 21. A quick-release ring 23 is provided on the tool holder body 1, and a quick-release retaining strip 24 protruding outward is provided on the outer wall of the quick-release ring 23. Four quick-release protrusions 22 and quick-release retaining strips 24 are evenly distributed circumferentially. The cover plate 16 is rotated to engage the quick-release protrusions 22 with the quick-release retaining strips 24. A clearance notch 25 is provided between adjacent quick-release retaining strips 24 on the outer wall of the quick-release ring 23 to allow the quick-release protrusions 22 to pass. Several preload springs 28 are evenly distributed circumferentially on the end face of the cover plate 16, and the preload springs 28 abut against the gasket 18.

[0054] The connecting hole 21 on the cover plate 16 facilitates connection with the blade holder body 1. When assembling the cover plate 16 and blade holder body 1, align the quick-release protrusion 22 on the cover plate 16 with the clearance notch 25, insert it into the quick-release protrusion 23, and then rotate the cover plate 16 to engage the quick-release protrusion 22 with the quick-release clip 24, thereby achieving axial positioning of the cover plate 16 and blade holder body 1. At this time, the preload spring 28 abuts against the washer 18, achieving pre-positioning of the slitting disc 17. Then, connect the positioning screw 20, causing the positioning screw 20 to abut against the washer 18 for positioning, thereby achieving axial positioning of the slitting disc 17.

[0055] When installing the blade holder body 1, it connects to the rotating shaft through the mounting hole 2. Then, by tightening the set screw 8, the set screw 8 pushes the abutment ball 9 towards the locking strip 3, thereby clamping the locking strip 3 onto the outer wall of the rotating shaft, thus positioning the blade holder body 1. During the tightening process, the set screw transmits pressure to the abutment ball 9. Since the abutment ball 9 can rotate, the rotational force is not transmitted to the locking strip 3 and the blade holder body 1. The locking strip 3 is only subjected to longitudinal pressure, preventing the blade holder body 1 from shifting due to rotational force and affecting the perpendicularity between the slitting blade and the rotating shaft.

[0056] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A press-cutting slitting knife holder structure, characterized by, The tool holder includes a tool holder body, which has mounting holes. A locking strip is installed on the inner wall of the mounting holes. One end of the locking strip is connected to the tool holder body, and the other end of the locking strip is suspended as a free end. A locking hole is provided on the side of the tool holder body, and a set screw is connected to the locking hole. An abutment ball is installed between the set screw and the free end of the locking strip.

2. The pressure-cut slitting knife holder structure according to claim 1, wherein The blade holder body is connected to the cover plate, and a slitting disc is installed between the cover plate and the blade holder body.

3. The pressure-cut slitting knife holder structure according to claim 2, wherein Gaskets are installed between the slitting disc and the cover plate, as well as between the slitting disc and the blade holder body.

4. The pressure-cut slitting knife holder structure according to claim 3, wherein The cover plate is circumferentially connected with several positioning screws, and the ends of the positioning screws abut against the gasket to achieve axial positioning of the slitting disc.

5. The pressure-cut slitting knife holder structure according to claim 2, wherein The blade holder body is equipped with a positioning protrusion ring, and the slitting blade disc is fitted and connected to the positioning protrusion ring.

6. The pressure-cut slitting knife holder structure according to claim 2, wherein The cover plate is provided with connecting holes, and several quick-release protrusions are provided on the inner wall of the connecting holes. The tool holder body is provided with quick-release rings, and quick-release locking strips protruding outwards are provided on the outer wall of the quick-release rings. The cover plate is rotated to make the quick-release protrusions lock into the quick-release locking strips.

7. The pressure-cut slitting knife holder structure according to claim 1, wherein A V-shaped groove is provided on the free end side wall of the locking strip, and the abutting ball abuts against the V-shaped groove.

8. The pressure-cut slitting knife holder structure according to claim 1, wherein A circumferentially extending groove is cut into the inner wall of the mounting hole to form a locking strip. One end of the groove is bent outward to form a reinforcing part at the end of the locking strip.

9. The pressure-cut slitting knife holder structure according to any one of claims 1 to 8, characterized in that, The end of the set screw is a contact surface, and the contact surface is together with the contact ball.

10. The pressure-cut slitting knife holder structure according to any one of claims 1 to 8, characterized in that, The set screw has a hemispherical rotating groove at its end, and the abutment ball is rotated and installed in the rotating groove. The lower end of the set screw is fastened to a positioning ring, which is fitted around the abutment ball.

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