Cutter mechanism for slitting machine
By designing a slitting machine cutting mechanism that adapts to different materials and thicknesses, the problem of insufficient adaptability of traditional cutting mechanisms has been solved, achieving efficient and precise slitting results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN YIDAO PRECISE MASCH CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional slitting machine cutting mechanisms are difficult to adapt to the slitting needs of rolls of different materials and thicknesses, resulting in problems such as severe blade wear, rough cuts, and dimensional deviations in slitting.
A cutting mechanism comprising a support frame, a fixed frame, and a movable frame was designed. By cooperating with the adjustment groove and rollers, it can adapt to roll materials of different specifications, and the stability and accuracy of slitting are ensured by using a motor drive and a threaded shaft system.
It enables efficient slitting of roll materials of different specifications, improves production efficiency and slitting quality, and ensures the accuracy of slitting dimensions and the flatness of the cut.
Smart Images

Figure CN224255459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting mechanism technology, and in particular to a cutting mechanism for a slitting machine. Background Technology
[0002] In the application of slitting machines, the cutting mechanism is the core component for accurately slitting wide rolls of material into multiple narrow rolls, and its performance directly affects slitting accuracy and production efficiency. Traditional slitting machine cutting mechanisms, exemplified by patent CN221070373U, often employ fixed blade angles and a single cutting mode, making it difficult to adapt to the slitting needs of rolls with different materials and thicknesses. When processing materials with high hardness or high flexibility, even optimized cutting mechanisms like those in CN221070373U are prone to problems such as severe blade wear, rough cuts, and dimensional deviations in slitting. Utility Model Content
[0003] The purpose of this utility model is to provide a cutting mechanism for a slitting machine that is compatible with roll materials of different specifications, achieves efficient slitting, improves production efficiency, ensures accurate slitting dimensions, produces smooth cuts, and improves slitting quality.
[0004] To achieve the above objectives, a cutting mechanism for a slitting machine is provided, including a support frame, a fixed frame movably connected to the side of the support frame, and a movable frame movably connected to the side of the support frame. A second shaft is movably connected through the lower ends of the support frame and the fixed frame, and a third shaft is movably connected through the lower ends of the support frame and the movable frame. Symmetrical adjustment slots are provided on the support frame, and corresponding adjustment slots are provided on the fixed frame and the movable frame. A first shaft is movably connected through each adjustment slot, and a fourth shaft is movably connected through each adjustment slot. First rollers are fixedly connected to the first and second shafts, and movably connected rubber sleeves are fitted onto the first rollers. Second rollers are fixedly connected to the third and fourth shafts. Multiple insertion / removal slots are provided on the second rollers, and corresponding cutting blades are movably connected within each slot. A threaded shaft is movably connected to one end of the first and fourth shafts. A rotating shaft is fixedly connected to one end of the threaded shaft, which is movably connected through the first and fourth shafts. A threaded sleeve is movably fitted onto the threaded shaft. A tightening cover is movably fitted onto the threaded sleeve. A limiting ring is fixedly fitted onto the threaded sleeve, which is movably connected through the tightening cover. A turntable is fixedly connected to one end of the threaded sleeve, and a friction strip is provided at one end of the tightening cover, which is movably connected to the support frame.
[0005] According to the cutting mechanism for a slitting machine, symmetrical motors are mounted on the side of the support frame, and one end of the second shaft and the third shaft are movably connected to the motors respectively.
[0006] According to the cutting mechanism for a slitting machine, the other end of the fourth shaft is provided with a threaded hole, and a threaded bolt is movably connected through the threaded hole.
[0007] Beneficial effects:
[0008] 1. By adjusting the slot in conjunction with the first and fourth axes, the positions of the fixed and movable frames can be flexibly adjusted, changing the distance and relative angle between the first and second rollers to accommodate different specifications of roll materials. The insertion and removal slot on the second roller facilitates the installation and replacement of the cutting blade, and multiple cutting blades can operate simultaneously. Combined with the motor-driven second and third axes, efficient slitting is achieved, improving production efficiency.
[0009] 2. The threaded shaft, threaded sleeve, and tightening cover can be adjusted by rotating the turntable. The friction strip and support frame enhance the stability of the entire cutting mechanism. The limiting ring ensures the positional accuracy of the threaded sleeve, and the threaded bolt secures the fourth axis. Combined with the rubber sleeve, this increases the stability of the roll material conveying, ensuring precise slitting dimensions, a clean cut, and improved slitting quality.
[0010] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0012] Figure 1 This is a perspective view of a cutting mechanism for a slitting machine according to the present invention;
[0013] Figure 2 This is a rear view of a cutting mechanism for a slitting machine according to the present invention.
[0014] Figure 3 This is a cross-sectional view of a cutting mechanism for a slitting machine proposed in this utility model;
[0015] Figure 4 The present utility model proposes Figure 3 Enlarged view of point A in the middle;
[0016] Figure 5 This utility model provides a cross-sectional view of the roller of a cutting mechanism for a slitting machine.
[0017] Figure 6 This is a schematic diagram of a cutting device for a slitting machine cutting mechanism proposed in this utility model.
[0018] Legend: 1. Support frame; 2. Fixed frame; 3. Movable frame; 4. First roller; 5. Rubber sleeve; 6. Second roller; 7. Insertion slot; 8. Cutting blade; 9. Adjustment slot; 10. Turntable; 11. Motor; 12. First shaft; 13. Second shaft; 14. Threaded bolt; 15. Tightening cover; 16. Threaded shaft; 17. Rotating shaft; 18. Threaded sleeve; 19. Limiting ring; 20. Threaded hole; 21. Friction strip; 22. Third shaft; 23. Fourth shaft. Detailed Implementation
[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0020] Reference Figure 1-6 This utility model provides a cutting mechanism for a slitting machine, which includes a support frame 1, a fixed frame 2 movably connected to the side of the support frame 1, a movable frame 3 movably connected to the side of the support frame 1, a second shaft 13 movably connected to the lower ends of the support frame 1 and the fixed frame 2, and a third shaft 22 movably connected to the lower ends of the support frame 1 and the movable frame 3.
[0021] Specifically: The support frame 1 has symmetrical adjustment grooves 9, and the fixed frame 2 and the movable frame 3 have corresponding adjustment grooves 9. The first shaft 12 is movably connected through the adjustment groove 9, and the fourth shaft 23 is movably connected through the adjustment groove 9, so as to adapt to the slitting requirements of roll materials of different widths and thicknesses.
[0022] Specifically: A first roller 4 is fixedly connected to the first shaft 12 and the second shaft 13. A movable rubber sleeve 5 is fitted on the first roller 4 to increase the friction with the surface of the roll material.
[0023] Specifically: The third axis 22 and the fourth axis 23 are fixedly connected to the second roller 6. The second roller 6 has multiple insertion slots 7, and the corresponding cutting blades 8 are movably connected in the insertion slots 7, which saves the time of changing the blades.
[0024] Specifically: One end of the first shaft 12 and the fourth shaft 23 is movably connected to a threaded shaft 16, and one end of the threaded shaft 16 is fixedly connected to a rotating shaft 17, which is movably connected through the first shaft 12 and the fourth shaft 23.
[0025] Specifically: a threaded sleeve 18 is fitted on the threaded shaft 16, a tightening cover 15 is fitted on the threaded sleeve 18, a limiting ring 19 is fitted on the threaded sleeve 18, the limiting ring 19 passes through and is movably connected to the tightening cover 15, a turntable 10 is fixedly connected to one end of the threaded sleeve 18, and a friction strip 21 is provided at one end of the tightening cover 15. The friction strip 21 is movably connected to the support frame 1 to ensure the stability of the cutting mechanism during operation.
[0026] Specifically: Symmetrical motors 11 are mounted on the side of the support frame 1, and one end of the second shaft 13 and the third shaft 22 are movably connected to the motors 11 to realize the conveying and cutting operations of the roll material.
[0027] Specifically: The other end of the fourth shaft 23 is provided with a threaded hole 20, and a threaded bolt 14 is movably connected through the threaded hole 20.
[0028] Working principle:
[0029] Based on the width and thickness of the roll material, the relative positions of the fixed frame 2, movable frame 3, and support frame 1 are changed by adjusting the positions of the first shaft 12 and the fourth shaft 23 within the adjusting groove 9, thus completing the initial adjustment of the mechanism. Rotating the turntable 10 causes the threaded sleeve 18 to move on the threaded shaft 16, pushing the tightening cover 15. The adjusted position is fixed by the friction between the friction strip 21 and the support frame 1. During slitting, the motor 11 drives the second shaft 13 and the third shaft 22 to rotate, causing the first roller 4 and the second roller 6 to operate. The rubber sleeve 5 on the first roller 4 increases the friction with the roll material, ensuring smooth transport. The cutting blade 8 on the second roller 6 slits the roll material during rotation, and the insertion / removal groove 7 facilitates quick replacement of worn or different specifications of cutting blade 8. The threaded bolt 14 at the other end of the fourth shaft 23 engages with the threaded hole 20 to further fix the fourth shaft 23. Combined with the constraint of the tightening cover 15 by the limiting ring 19, this ensures stable operation of the entire cutting mechanism during slitting, accurately completing the slitting operation of different roll materials.
[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A slitting machine with a cutting knife mechanism, comprising a support frame (1), characterized in that: The support frame (1) has a fixed frame (2) movably connected to its side, and a movable frame (3) movably connected to its side. A second shaft (13) is movably connected to the lower ends of the support frame (1) and the fixed frame (2). A third shaft (22) is movably connected to the lower ends of the support frame (1) and the movable frame (3). Symmetrical adjustment slots (9) are provided on the support frame (1). Corresponding adjustment slots (9) are provided on the fixed frame (2) and the movable frame (3). A first shaft (12) is movably connected to the adjustment slot (9). A fourth shaft (23) is movably connected to the adjustment slot (9). A first roller (4) is fixedly connected to the first shaft (12) and the second shaft (13). A movably connected rubber sleeve (5) is fitted onto the first roller (4). A second roller (6) is fixedly connected to the third shaft (22) and the fourth shaft (23). The second roller (6) is provided with multiple insertion slots (7), and a cutting blade (8) is movably connected in the corresponding insertion slots (7). A threaded shaft (16) is movably connected to one end of the first shaft (12) and the fourth shaft (23). A rotating shaft (17) is fixedly connected to one end of the threaded shaft (16). The rotating shaft (17) is movably connected to the first shaft (12) and the fourth shaft (23). A threaded sleeve (18) is movably connected on the threaded shaft (16). A tightening cover (15) is movably connected on the threaded sleeve (18). A limiting ring (19) is fixedly connected on the threaded sleeve (18). The limiting ring (19) is movably connected to the tightening cover (15). A turntable (10) is fixedly connected to one end of the threaded sleeve (18). A friction strip (21) is provided at one end of the tightening cover (15). The friction strip (21) is movably connected to the support frame (1).
2. The slitting machine cutter mechanism of claim 1, wherein, The support frame (1) has symmetrical motors (11) mounted on its side, and one end of the second shaft (13) and the third shaft (22) are movably connected to the motors (11).
3. The slitting machine cutter mechanism of claim 1, wherein, The other end of the fourth shaft (23) is provided with a threaded hole (20), and a threaded bolt (14) is movably connected through the threaded hole (20).