Slitting unit structure facilitating tool changing

Abstract

The utility model discloses a slitting unit structure facilitating tool changing, and aims to overcome the defects that a slitting unit is inconvenient in tool changing operation and high in labor intensity. The device comprises a main bearing box and an auxiliary bearing box, each of the main bearing box and the auxiliary bearing box comprises a movable box body and a fixed box body which are connected together, an upper rotating shaft is mounted between the two movable box bodies, an upper cutter rotating part is mounted on the upper rotating shaft, a lower rotating shaft is mounted between the two fixed box bodies, a lower cutter rotating part is mounted on the lower rotating shaft, and jacking columns arranged in a lifting manner are mounted on the movable box bodies. The jacking column moves downwards to abut against the fixed box body so that the movable box body can be lifted upwards. According to the slitting unit structure facilitating tool changing, hoisting is not needed in the tool changing process, the whole tool changing action can be completed by one person, tool changing operation is facilitated, labor intensity is lowered, and working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool structure technology, and more specifically, it relates to a slitting unit structure that facilitates tool changing. Background Technology

[0002] Currently, conventional slitting units on the market require a crane to lift the entire upper bearing housing when changing blades. Because the entire slitting unit is quite heavy (approximately 150kg), routine blade changes are relatively difficult. Furthermore, the use of a crane necessitates specific site requirements, often requiring two or more people to complete the blade change operation. For example, Chinese patent application number 202410363646 X discloses a fixed, finely adjustable blade rotation and slitting unit, which requires a crane to lift the entire upper bearing housing when changing blades, resulting in high labor intensity. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a slitting unit structure that facilitates blade replacement, which makes blade replacement easier, reduces labor intensity, and improves work efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a slitting unit structure that facilitates blade replacement, including a main bearing housing and a secondary bearing housing. Both the main bearing housing and the secondary bearing housing include a movable housing and a fixed housing connected together. An upper rotating shaft is installed between the two movable housings, and an upper blade rotor is installed on the upper rotating shaft. A lower rotating shaft is installed between the two fixed housings, and a lower blade rotor is installed on the lower rotating shaft. A lifting and lowering top column is installed on the movable housing. The top column moves downward and pushes against the fixed housing to lift the movable housing upward.

[0005] During tool changing, first adjust the position of the upper tool rotor to axially separate the upper and lower tool rotors. Then, move the top column downwards to press against the fixed housing, thereby lifting the movable housing upwards and radially separating the upper and lower tool rotors. Next, remove the auxiliary bearing housing, separating one end of the upper and lower shafts from it. This allows for tool changing of the upper and lower tool rotors. After tool changing, reinstall the auxiliary bearing housing. Then, move the top columns on both movable housings upwards to move the movable housings back to their original downward position. Securely connect the movable and fixed housings together. Finally, adjust the position of the upper tool rotor to bring it axially closer to its final position.

[0006] The cutting unit structure of this patent facilitates blade replacement. No lifting is required during the blade replacement process, and one person can complete the entire blade replacement action, which simplifies the blade replacement operation, reduces labor intensity, and improves work efficiency.

[0007] Preferably, the top post is threaded onto the movable housing, and the top post is connected to the handwheel.

[0008] The top column is threadedly connected to the movable housing, allowing for lifting and movement via rotation of the top column. Operation is convenient, and once in position, the top column provides stable and reliable support. The top column is rotated via a handwheel, making operation easy.

[0009] Preferably, a detachable support pad is used to connect the movable housing and the fixed housing.

[0010] After the movable box is raised, a support pad is installed between the movable box and the fixed box to ensure stable support for the movable box.

[0011] Preferably, a slide is provided on the movable housing, and the support pad is slidably installed on the slide.

[0012] The support pad is slidably mounted on the slide block. When the movable and fixed housings are securely connected, the support pad is pulled outwards, at which point it does not provide support. When the movable housing is raised, the support pad is pushed inwards, causing it to slide between the movable and fixed housings, where it provides support.

[0013] Preferably, a bracket is installed on the fixed box, and the bracket extends upward to the upper part of the movable box, with the top column resting on the bracket.

[0014] The top column rests on the support frame, ensuring stable support for the movable box.

[0015] Preferably, several fastening screws are used to connect the movable box and the fixed box.

[0016] The fastening screws ensure a reliable connection between the movable and fixed housings. Before raising the movable housing, loosen the fastening screws, but the screws will not separate from the fixed housing. At this point, the fastening screws act as a guide, preventing the movable housing from moving laterally.

[0017] Preferably, a base is connected between the main bearing housing and the auxiliary bearing housing, with the main bearing housing being securely connected to the base and the auxiliary bearing housing being detachably connected to the base.

[0018] Both the main bearing housing and the auxiliary bearing housing are connected to the base, ensuring stability and reliability. The auxiliary bearing housing is detachably connected to the base; removing the auxiliary bearing housing exposes the ends of the upper and lower rotating shafts, facilitating tool changing operations for upper and lower tool rotation.

[0019] Preferably, several casters are installed on the base.

[0020] The casters are mounted on the base, making it easy to move the base.

[0021] Preferably, a protective plate is detachably connected between the movable and fixed housings.

[0022] The protective plate connects the movable and fixed housings, ensuring a reliable connection between them and preventing the upper shaft from shaking.

[0023] Preferably, a lifting and moving support column is installed on the movable housing, a pre-tension spring is installed between the support column and the movable housing, a ratchet is provided on the support column, a movable slider is installed on the movable housing, a pawl is installed on the slider, and the pawl is adapted to the ratchet.

[0024] During the fastening process of the movable and fixed housings, the slider slides outward to separate the pawl from the ratchet, ensuring a reliable fit between the lower end of the movable housing and the upper end of the fixed housing. After the movable and fixed housings are fastened, the slider slides inward to engage the pawl and ratchet. As the movable housing rises, the support column is pushed outward by the pre-tensioned spring, and the ratchet slides past the pawl. The lower end of the support column remains against the fixed housing. Once the housing is fully raised, the ratchet engages with the pawl, ensuring reliable support for the movable housing and preventing it from retracting back into the housing. Throughout the lifting process, the support column remains against the fixed housing, ensuring stable and reliable support for the movable housing.

[0025] Compared with the prior art, the beneficial effects of this utility model are: (1) The cutting unit structure of this patent is easy to change the blade. During the blade change process, there is no need to lift. One person can complete the entire blade change action, which facilitates the blade change operation, reduces labor intensity, and improves work efficiency; (2) The top column is threadedly connected to the movable box. The lifting and moving can be realized by rotating the top column. The operation is convenient. Moreover, after the top column is moved into place, the support is stable and reliable; (3) After the movable box is lifted, a support pad is installed between the movable box and the fixed box to ensure the stable support of the movable box; (4) The fastening screw realizes the reliable connection between the movable box and the fixed box. Before the movable box is lifted, the fastening screw is loosened first, but the fastening screw will not separate from the fixed box. At this time, the fastening screw plays a guiding role to prevent the movable box from moving laterally; (5) During the lifting process of the movable box, the support column always abuts against the fixed box to ensure the stable and reliable support of the movable box. 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 showing the connection between the movable box and the fixed box of this utility model.

[0029] Figure 4 This is a side view of the connection between the movable box and the fixed box in Embodiment 1 of this utility model.

[0030] Figure 5 This is a side view of the connection between the movable box and the fixed box in Embodiment 2 of this utility model.

[0031] Figure 6 This is a side view of the connection between the movable box and the fixed box in Embodiment 3 of this utility model.

[0032] In the diagram: 1. Main bearing housing, 2. Secondary bearing housing, 3. Base, 4. Positioning table, 5. Positioning protrusion, 6. Positioning groove, 7. Roller, 8. Movable housing, 9. Fixed housing, 10. Fastening screw, 11. T-hole, 12. Threaded hole, 13. Upper rotating shaft, 14. Upper cutter head, 15. Lower rotating shaft, 16. Lower cutter head, 17. Top column, 18. Handwheel, 19. Mounting plate, 20. Bracket, 2 1. Upright pole; 22. Crossbeam; 23. Protective plate; 24. Support pad; 25. Slide block; 26. Sliding hole; 27. Guide groove; 28. Positioning pin; 29. ​​Support column; 30. Preload spring; 31. Mounting hole; 32. Limiting ring; 33. Positioning plate; 34. Racket tooth; 35. Slider; 36. Pawl; 37. Guide hole; 38. Return spring; 39. Abutment screw; 40. Positioning spring. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0034] Example 1: A slitting unit structure that facilitates blade changing (see...) Figures 1 to 4 The system includes a main bearing housing 1 and a secondary bearing housing 2, which are positioned opposite each other and connected by a base 3. The main bearing housing 1 is securely connected to the base 3, while the secondary bearing housing 2 is detachably connected to the base 3. A positioning platform 4 corresponding to the secondary bearing housing 2 is provided on the base 3, along with a positioning protrusion 5. A positioning groove 6 is provided on the bottom surface of the secondary bearing housing 2, which is fitted and connected to the positioning protrusion 5. The lower edge of the side of the secondary bearing housing 2 is positioned against the side wall of the positioning platform 4, and a locking screw is securely connected between the secondary bearing housing 2 and the positioning platform 4. Both the main bearing housing 1 and the secondary bearing housing 2 are connected to the base 3, ensuring stability and reliability. The secondary bearing housing 2 is detachably connected to the base 3. Removing the secondary bearing housing 2 exposes the ends of the upper rotating shaft 13 and the lower rotating shaft 15, facilitating tool changing operations for the upper and lower tool rotations 14 and 16. Several rollers 7 are installed on the base 3, with a pair of rollers 7 on the left and a pair of rollers 7 on the right. The roller 7 is mounted on the base 3 to facilitate the movement of the base 3.

[0035] Both the main bearing housing 1 and the auxiliary bearing housing 2 include a movable housing 8 and a fixed housing 9 connected together. Several fastening screws 10 connect the movable housing 8 and the fixed housing 9; in this embodiment, four fastening screws 10 connect the movable housing 8 and the fixed housing 9. A T-shaped hole 11 is provided on the movable housing 8, and a threaded hole 12 is provided on the fixed housing 9. The threaded section of the fastening screw 10 is threadedly connected and fastened to the threaded hole 12 on the fixed housing 9, with the nut end of the fastening screw 10 abutting against the transition surface of the T-shaped hole 11. Before the movable housing 8 is raised, the fastening screws 10 are loosened, but they will not separate from the fixed housing 9. At this time, the fastening screws 10 act as a guide, preventing the movable housing 8 from moving laterally.

[0036] An upper rotating shaft 13 is installed between the two movable housings 8, and an upper blade screw 14 is installed on the upper rotating shaft 13. A lower rotating shaft 15 is installed between the two fixed housings 9, and a lower blade screw 16 is installed on the lower rotating shaft 15. A bearing is installed between the upper rotating shaft 13 and the movable housing 8, and a bearing is installed between the lower rotating shaft 15 and the fixed housing 9. A lifting top column 17 is installed on the movable housing 8. The top column 17 moves downward and presses against the fixed housing 9, lifting the movable housing 8 upward. The top column 17 is threadedly connected to the movable housing 8 and is connected to a handwheel 18, which has a handle. A mounting plate 19 is installed at the upper end of the movable housing 8, and the top column 17 is threadedly connected to the mounting plate 19.

[0037] A bracket 20 is installed on the fixed housing 9, extending upwards to the upper part of the movable housing 8. A top column 17 rests on the bracket 20. The bracket 20 includes two uprights 21 and a crossbeam 22. The crossbeam 22 connects the upper ends of the two uprights 21. Two oblong holes are provided on the uprights 21, and locking screws are fastened between the oblong holes and the fixed housing 9 to secure the uprights 21. The lower end of the top column 17 rests on the crossbeam 22. A protective plate 23 is detachably connected between the movable housing 8 and the fixed housing 9. The protective plate 23 ensures a reliable connection between the movable housing 8 and the fixed housing 9, preventing the upper rotating shaft 13 from shaking.

[0038] A detachable support pad 24 is provided between the movable housing 8 and the fixed housing 9. After the movable housing 8 is raised, the support pad 24 is installed between the movable housing 8 and the fixed housing 9 to ensure stable support for the movable housing 8.

[0039] During the tool changing operation, first adjust the position of the upper tool rotor 14 to axially separate the upper tool rotor 14 and the lower tool rotor 16. Then, move the top column 17 downwards to press against the fixed housing 9, thereby lifting the movable housing 8 upwards and radially separating the upper tool rotor 14 and the lower tool rotor 16. Next, remove the auxiliary bearing housing 2, separating one end of the upper rotating shaft 13 and the lower rotating shaft 15 from the auxiliary bearing housing 2. This allows for the tool changing operation of the upper tool rotor 14 and the lower tool rotor 16. After the tool changing is completed, reinstall the auxiliary bearing housing 2. Then, move the top column 17 on both movable housings 8 upwards to move the movable housing 8 downwards back to its original position. Securely connect the movable housing 8 and the fixed housing 9 together. Finally, adjust the position of the upper tool rotor 14 so that the upper tool rotor 14 and the lower tool rotor 16 are axially close together in place.

[0040] Example 2: A slitting unit structure that facilitates blade changing (see...) Figure 5 The system includes a main bearing housing 1 and a secondary bearing housing 2, which are positioned opposite each other and connected by a base 3. The main bearing housing 1 is securely connected to the base 3, while the secondary bearing housing 2 is detachably connected to the base 3. A positioning platform 4 corresponding to the secondary bearing housing 2 is provided on the base 3, along with a positioning protrusion 5. A positioning groove 6 is provided on the bottom surface of the secondary bearing housing 2, which is fitted and connected to the positioning protrusion 5. The lower edge of the side of the secondary bearing housing 2 is positioned against the side wall of the positioning platform 4, and a locking screw is securely connected between the secondary bearing housing 2 and the positioning platform 4. Both the main bearing housing 1 and the secondary bearing housing 2 are connected to the base 3, ensuring stability and reliability. The secondary bearing housing 2 is detachably connected to the base 3. Removing the secondary bearing housing 2 exposes the ends of the upper rotating shaft 13 and the lower rotating shaft 15, facilitating tool changing operations for the upper and lower tool rotations 14 and 16. Several rollers 7 are installed on the base 3, with a pair of rollers 7 on the left and a pair of rollers 7 on the right. The roller 7 is mounted on the base 3 to facilitate the movement of the base 3.

[0041] Both the main bearing housing 1 and the auxiliary bearing housing 2 include a movable housing 8 and a fixed housing 9 connected together. Several fastening screws 10 connect the movable housing 8 and the fixed housing 9; in this embodiment, four fastening screws 10 connect the movable housing 8 and the fixed housing 9. A T-shaped hole 11 is provided on the movable housing 8, and a threaded hole 12 is provided on the fixed housing 9. The threaded section of the fastening screw 10 is threadedly connected and fastened to the threaded hole 12 on the fixed housing 9, with the nut end of the fastening screw 10 abutting against the transition surface of the T-shaped hole 11. Before the movable housing 8 is raised, the fastening screws 10 are loosened, but they will not separate from the fixed housing 9. At this time, the fastening screws 10 act as a guide, preventing the movable housing 8 from moving laterally.

[0042] An upper rotating shaft 13 is installed between the two movable housings 8, and an upper blade screw 14 is installed on the upper rotating shaft 13. A lower rotating shaft 15 is installed between the two fixed housings 9, and a lower blade screw 16 is installed on the lower rotating shaft 15. A bearing is installed between the upper rotating shaft 13 and the movable housing 8, and a bearing is installed between the lower rotating shaft 15 and the fixed housing 9. A lifting top column 17 is installed on the movable housing 8. The top column 17 moves downward and presses against the fixed housing 9, lifting the movable housing 8 upward. The top column 17 is threadedly connected to the movable housing 8 and is connected to a handwheel 18, which has a handle. A mounting plate 19 is installed at the upper end of the movable housing 8, and the top column 17 is threadedly connected to the mounting plate 19.

[0043] A bracket 20 is installed on the fixed housing 9, extending upwards to the upper part of the movable housing 8. A top column 17 rests on the bracket 20. The bracket 20 includes two uprights 21 and a crossbeam 22. The crossbeam 22 connects the upper ends of the two uprights 21. Two oblong holes are provided on the uprights 21, and locking screws are fastened between the oblong holes and the fixed housing 9 to secure the uprights 21. The lower end of the top column 17 rests on the crossbeam 22. A protective plate 23 is detachably connected between the movable housing 8 and the fixed housing 9. The protective plate 23 ensures a reliable connection between the movable housing 8 and the fixed housing 9, preventing the upper rotating shaft 13 from shaking.

[0044] A detachable support pad 24 is connected between the movable housing 8 and the fixed housing 9. After the movable housing 8 is raised, the support pad 24 is inserted between the movable housing 8 and the fixed housing 9 to ensure stable support of the movable housing 8. A slide 25 is provided on the movable housing 8, and the support pad 24 is slidably mounted on the slide 25. A sliding hole 26 is provided on the slide 25, and the support pad 24 is slidably adapted to the sliding hole 26. The lower inner edge of the support pad 24 is inclined to form a guide surface, and a guide groove 27 is provided on the upper surface of the support pad 24. A positioning pin 28 is connected to the slide 25, and the end of the positioning pin 28 is movably inserted into the guide groove 27 to prevent the support pad 24 from sliding off the slide 25.

[0045] During the tool changing operation, first adjust the position of the upper tool rotor 14 to axially separate the upper tool rotor 14 and the lower tool rotor 16. Then, move the top column 17 downwards to press against the fixed housing 9, thereby lifting the movable housing 8 upwards and radially separating the upper tool rotor 14 and the lower tool rotor 16. Next, remove the auxiliary bearing housing 2, separating one end of the upper rotating shaft 13 and the lower rotating shaft 15 from the auxiliary bearing housing 2. This allows for the tool changing operation of the upper tool rotor 14 and the lower tool rotor 16. After the tool changing is completed, reinstall the auxiliary bearing housing 2. Then, move the top column 17 on both movable housings 8 upwards to move the movable housing 8 downwards back to its original position. Securely connect the movable housing 8 and the fixed housing 9 together. Finally, adjust the position of the upper tool rotor 14 so that the upper tool rotor 14 and the lower tool rotor 16 are axially close together in place.

[0046] Example 3: A slitting unit structure that facilitates blade changing (see...) Figure 6 The system includes a main bearing housing 1 and a secondary bearing housing 2, which are positioned opposite each other and connected by a base 3. The main bearing housing 1 is securely connected to the base 3, while the secondary bearing housing 2 is detachably connected to the base 3. A positioning platform 4 corresponding to the secondary bearing housing 2 is provided on the base 3, along with a positioning protrusion 5. A positioning groove 6 is provided on the bottom surface of the secondary bearing housing 2, which is fitted and connected to the positioning protrusion 5. The lower edge of the side of the secondary bearing housing 2 is positioned against the side wall of the positioning platform 4, and a locking screw is securely connected between the secondary bearing housing 2 and the positioning platform 4. Both the main bearing housing 1 and the secondary bearing housing 2 are connected to the base 3, ensuring stability and reliability. The secondary bearing housing 2 is detachably connected to the base 3. Removing the secondary bearing housing 2 exposes the ends of the upper rotating shaft 13 and the lower rotating shaft 15, facilitating tool changing operations for the upper and lower tool rotations 14 and 16. Several rollers 7 are installed on the base 3, with a pair of rollers 7 on the left and a pair of rollers 7 on the right. The roller 7 is mounted on the base 3 to facilitate the movement of the base 3.

[0047] Both the main bearing housing 1 and the auxiliary bearing housing 2 include a movable housing 8 and a fixed housing 9 connected together. Several fastening screws 10 connect the movable housing 8 and the fixed housing 9; in this embodiment, four fastening screws 10 connect the movable housing 8 and the fixed housing 9. A T-shaped hole 11 is provided on the movable housing 8, and a threaded hole 12 is provided on the fixed housing 9. The threaded section of the fastening screw 10 is threadedly connected and fastened to the threaded hole 12 on the fixed housing 9, with the nut end of the fastening screw 10 abutting against the transition surface of the T-shaped hole 11. Before the movable housing 8 is raised, the fastening screws 10 are loosened, but they will not separate from the fixed housing 9. At this time, the fastening screws 10 act as a guide, preventing the movable housing 8 from moving laterally.

[0048] An upper rotating shaft 13 is installed between the two movable housings 8, and an upper blade screw 14 is installed on the upper rotating shaft 13. A lower rotating shaft 15 is installed between the two fixed housings 9, and a lower blade screw 16 is installed on the lower rotating shaft 15. A bearing is installed between the upper rotating shaft 13 and the movable housing 8, and a bearing is installed between the lower rotating shaft 15 and the fixed housing 9. A lifting top column 17 is installed on the movable housing 8. The top column 17 moves downward and presses against the fixed housing 9, lifting the movable housing 8 upward. The top column 17 is threadedly connected to the movable housing 8 and is connected to a handwheel 18, which has a handle. A mounting plate 19 is installed at the upper end of the movable housing 8, and the top column 17 is threadedly connected to the mounting plate 19.

[0049] A bracket 20 is installed on the fixed housing 9, extending upwards to the upper part of the movable housing 8. A top column 17 rests on the bracket 20. The bracket 20 includes two uprights 21 and a crossbeam 22. The crossbeam 22 connects the upper ends of the two uprights 21. Two oblong holes are provided on the uprights 21, and locking screws are fastened between the oblong holes and the fixed housing 9 to secure the uprights 21. The lower end of the top column 17 rests on the crossbeam 22. A protective plate 23 is detachably connected between the movable housing 8 and the fixed housing 9. The protective plate 23 ensures a reliable connection between the movable housing 8 and the fixed housing 9, preventing the upper rotating shaft 13 from shaking.

[0050] A lifting and moving support column 29 is installed on the movable housing 8. A pre-tension spring 30 is installed between the support column 29 and the movable housing 8. The movable housing 8 is provided with mounting holes 31 corresponding to the support column 29. The pre-tension spring 30 and the upper part of the support column 29 are both installed in the mounting holes 31. A limiting protrusion ring 32 is provided on the upper outer wall of the support column 29. A positioning plate 33 is installed on the lower end face of the movable housing 8. The support column 29 is connected to the positioning plate 33. The positioning plate 33 limits the limiting protrusion ring 32. A row of ratchet teeth 34 is provided on the support column 29. A movable slider 35 is installed on the movable housing 8. A pawl 36 is installed on the slider 35. The pawl 36 is adapted to the ratchet teeth 34. A guide hole 37 is provided on the movable housing 8. The slider 35 is slidably installed in the guide hole 37. A return spring 38 is installed in the guide hole 37 and abuts against the slider 35. The open end of the guide hole 37 is threadedly connected to the abutting screw 39. The end of the abutting screw 39 abuts against the slider 35. A pin and a positioning spring 40 are installed on the slider 35. A pawl 36 is placed between the positioning spring 40 and the pin.

[0051] During the fastening process of the movable housing 8 and the fixed housing 9, the slider 35 slides outward to separate the pawl 36 from the ratchet 34, ensuring that the lower end of the movable housing 8 can reliably fit and connect with the upper end of the fixed housing 9. After the movable housing 8 and the fixed housing 9 are fastened together, the slider 35 slides inward to adapt the pawl 36 to the ratchet 34. During the upward lifting of the movable housing 8, the support column 29 is pushed outward by the pre-tension spring 30, and the ratchet 34 slides past the pawl 36. The lower end of the support column 29 always abuts against the fixed housing 9. After the lifting is in place, the ratchet 34 is locked onto the pawl 36, ensuring reliable support of the support column 29 for the movable housing 8 and preventing the support column 29 from moving upward and retracting into the movable housing 8. During the lifting process of the movable housing 8, the support column 29 always abuts against the fixed housing 9, ensuring stable and reliable support for the movable housing 8.

[0052] During the tool changing operation, first adjust the position of the upper tool rotor 14 to axially separate the upper tool rotor 14 and the lower tool rotor 16. Then, move the top column 17 downwards to press against the fixed housing 9, thereby lifting the movable housing 8 upwards and radially separating the upper tool rotor 14 and the lower tool rotor 16. Next, remove the auxiliary bearing housing 2, separating one end of the upper rotating shaft 13 and the lower rotating shaft 15 from the auxiliary bearing housing 2. This allows for the tool changing operation of the upper tool rotor 14 and the lower tool rotor 16. After the tool changing is completed, reinstall the auxiliary bearing housing 2. Then, move the top column 17 on both movable housings 8 upwards to move the movable housing 8 downwards back to its original position. Securely connect the movable housing 8 and the fixed housing 9 together. Finally, adjust the position of the upper tool rotor 14 so that the upper tool rotor 14 and the lower tool rotor 16 are axially close together in place.

[0053] 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 slitting unit structure that facilitates blade changing, characterized in that, It includes a main bearing housing and a secondary bearing housing. Both the main bearing housing and the secondary bearing housing include a movable housing and a fixed housing connected together. An upper rotating shaft is installed between the two movable housings, and an upper cutting blade is installed on the upper rotating shaft. A lower rotating shaft is installed between the two fixed housings, and a lower cutting blade is installed on the lower rotating shaft. A lifting and lowering top column is installed on the movable housing. The top column moves downward and presses against the fixed housing to lift the movable housing upward.

2. The slitting unit structure for easy blade changing according to claim 1, characterized in that, The top post is threaded onto the movable housing, and the top post is connected to the handwheel.

3. The slitting unit structure for easy blade changing according to claim 1, characterized in that, A detachable support pad connects the movable and fixed housings.

4. The slitting unit structure for easy blade changing according to claim 3, characterized in that, A slide is installed on the movable box, and a support pad is slidably installed on the slide.

5. The slitting unit structure for easy blade changing according to claim 1, characterized in that, A bracket is installed on the fixed box, and the bracket extends upward to the upper part of the movable box, with the top column resting on the bracket.

6. The slitting unit structure for easy blade changing according to claim 1, characterized in that, Several fastening screws connect the movable box and the fixed box.

7. The slitting unit structure for easy blade changing according to claim 1, characterized in that, A base connects the main bearing housing and the auxiliary bearing housing. The main bearing housing is securely connected to the base, while the auxiliary bearing housing is detachably connected to the base.

8. The slitting unit structure for easy blade changing according to claim 7, characterized in that, Several casters are installed on the base.

9. A slitting unit structure for easy blade changing according to any one of claims 1 to 8, characterized in that, A protective panel can be detachably connected between the movable and fixed housings.

10. The slitting unit structure for easy blade changing according to claim 1, characterized in that, A lifting and moving support column is installed on the movable housing. A pre-tension spring is installed between the support column and the movable housing. A ratchet is provided on the support column. A sliding block with a moving mechanism is installed on the movable housing. A pawl is installed on the sliding block. The pawl and ratchet are compatible.

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