A mobile adjustable slitting knife
The slitting knife angle and length can be adjusted by using casters and a gear and rack transmission system driven by a motor, which solves the problem that existing slitting knives cannot be adjusted, and meets the slitting needs of various materials and facilitates movement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN XINRUI LI KNIFE CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-07
AI Technical Summary
The existing slitting blades are not easy to adjust in terms of angle and length after installation, making it difficult to meet the slitting needs of different materials, and they are also not easy to move between different work locations.
The system employs casters, telescopic columns, a motor, and a rack and pinion transmission system to achieve automatic adjustment of the slitting knife's angle and length. The casters move the knife to a designated position, while the motor drives the gears and rack and pinion transmission sleeve to adjust the length. The motor also drives the mounting shaft to rotate and adjust the angle.
It enables automatic adjustment of the angle and length of the slitting blade, facilitating movement between different work locations and meeting the slitting needs of various materials.
Smart Images

Figure CN224464840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slitting knife technology, and in particular to a movable and adjustable slitting knife. Background Technology
[0002] A slitting knife is a specialized tool or device used to cut wide materials (such as metal strips, plastic films, and paper) into narrower widths. It is widely used in various industrial sectors, including but not limited to metal processing, papermaking, printing, packaging, and plastic film manufacturing. However, existing slitting knives are typically bolted to a mounting shaft, making angle adjustment inconvenient after installation. Their fixed length also makes it difficult to meet the slitting needs of different materials and hinders their movement between different work locations, resulting in considerable inconvenience in use.
[0003] Therefore, a movable adjustable slitting knife has been developed that can automatically adjust the angle and length of the slitting knife, making it easy to move the slitting knife to meet the slitting needs of different materials. Utility Model Content
[0004] To overcome the shortcomings of existing slitting knives, such as inconvenience in adjusting the angle after installation, fixed length, difficulty in meeting the slitting needs of different materials, and inconvenience in moving between different work locations, this utility model provides a mobile adjustable slitting knife that can automatically adjust the angle and length of the slitting knife, making it easy to move the slitting knife to meet the slitting needs of different materials.
[0005] The technical implementation scheme of this utility model is as follows: a movable adjustable slitting knife includes a base, casters, telescopic columns, a first fastening bolt, a first motor, a mounting shaft, and a slitting assembly. Multiple casters are rotatably connected to the lower side of the base. Telescopic columns are connected to the upper sides of both the left and right sides of the base. The first fastening bolt is threadedly connected to the side of the telescopic columns that are far apart from each other. The telescopic end of the left telescopic column is connected to the first motor. The mounting shaft is clamped to the output shaft of the first motor. The mounting shaft is rotatably connected to the telescopic end of the right telescopic column through a bearing. The mounting shaft has multiple scale grooves and is equipped with a slitting assembly capable of slitting materials.
[0006] In a preferred embodiment of this utility model, a reinforcing block is provided between each telescopic column and the base.
[0007] In a preferred embodiment of this utility model, a knob is provided on the first fastening bolt.
[0008] In a preferred embodiment of this utility model, it also includes support legs, with multiple support legs threadedly connected to the lower side of the base.
[0009] In a preferred embodiment of the present invention, a counterweight is also included, and a counterweight is connected to the upper rear side of the base.
[0010] In a preferred embodiment of this utility model, the slitting assembly includes a mounting sleeve, a second fastening bolt, a rack and pinion drive sleeve, a slitting knife, a locking bolt, a second motor, and gears. Multiple mounting sleeves are engaged with the mounting shaft, and each mounting sleeve is threadedly connected to a second fastening bolt, which engages with the mounting shaft. A rack and pinion drive sleeve is slidably connected to each mounting sleeve, and a slitting knife is engaged with each rack and pinion drive sleeve. Two locking bolts are threadedly connected to the left side of each rack and pinion drive sleeve, and these locking bolts engage with adjacent slitting knives. A second motor is connected to the right side of each mounting sleeve, and gears are connected to the output shaft of each second motor, with the gears meshing with adjacent rack and pinion drive sleeves.
[0011] Compared with the prior art, the present invention has the following advantages: The present invention moves the base to the material slitting area by means of casters, then starts the second motor to drive the gear to rotate and mesh with the rack and pinion transmission sleeve to adjust the length of the slitting knife. Then the first motor is started to drive the mounting shaft to rotate and adjust the angle of the slitting knife. This achieves the effect of automatically adjusting the angle and length of the slitting knife, which facilitates the movement of the slitting knife and meets the slitting requirements of different materials. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Figure 2 This is a three-dimensional structural diagram of the present invention.
[0014] Figure 3 This is a three-dimensional structural diagram of the mounting shaft and other components of this utility model.
[0015] Figure 4 This is a three-dimensional structural diagram of the mounting sleeve and other components of this utility model.
[0016] Figure 5 This is a three-dimensional structural diagram of components such as the rack and pinion drive sleeve in this practical application.
[0017] The components in the attached diagram are labeled as follows: 1. Base, 2. Casters, 3. Support legs, 4. Counterweight, 5. Telescopic column, 6. First fastening bolt, 7. First motor, 71. Mounting shaft, 8. Scale groove, 9. Mounting sleeve, 10. Second fastening bolt, 11. Rack and pinion drive sleeve, 12. Slitting knife, 13. Locking bolt, 14. Second motor, 15. Gear. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] A movable, adjustable slitting knife, such as Figures 1-5 As shown, the structure includes a base 1, casters 2, support legs 3, counterweight 4, telescopic columns 5, first fastening bolts 6, a first motor 7, a mounting shaft 71, and a cutting assembly. Four casters 2 are rotatably connected to the lower side of the base 1, and four support legs 3 are threadedly connected to the lower side of the base 1. The counterweight 4 is connected to the upper rear part of the base 1. Telescopic columns 5 are connected to the upper left and right sides of the base 1. Each telescopic column 5 has a reinforcing block between it and the base 1 to enhance structural stability. The first fastening bolt 6 is threadedly connected to the side of each telescopic column 5 that is furthest from each other. The first fastening bolt 6 has a knob for easy gripping. The first motor 7 is connected to the telescopic end of the left telescopic column 5. The mounting shaft 71 is engaged with the output shaft of the first motor 7. The mounting shaft 71 is rotatably connected to the telescopic end of the right telescopic column 5 via a bearing. The mounting shaft 71 has multiple graduated grooves 8 and a cutting assembly.
[0020] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the slitting assembly includes a mounting sleeve 9, a second fastening bolt 10, a rack and pinion drive sleeve 11, a slitting blade 12, a locking bolt 13, a second motor 14, and a gear 15. Three mounting sleeves 9 are engaged with the mounting shaft 71. Each mounting sleeve 9 is threadedly connected to a second fastening bolt 10, which engages with the mounting shaft 71. Each mounting sleeve 9 is slidably connected to a rack and pinion drive sleeve 11, which is engaged with a slitting blade 12. Two locking bolts 13 are threadedly connected to the left side of each rack and pinion drive sleeve 11, engaging with adjacent slitting blades 12. The right side of each mounting sleeve 9 is connected to a second motor 14, and the output shaft of each second motor 14 is connected to a gear 15, which meshes with adjacent rack and pinion drive sleeves 11.
[0021] When using this utility model, firstly, the base 1 is moved to the material slitting area using the universal wheels 2. After reaching the designated position, the support legs 3 are lowered so that they contact the ground, stabilizing the base 1 on the ground. The counterweight 4 is used to maintain the overall balance of the base 1. Then, according to the material slitting requirements, the first fastening bolt 6 is loosened, and the length of the telescopic column 5 is adjusted. After adjustment, the telescopic column 5 is fixed using the first fastening bolt 6. Then, according to the scale groove 8, the corresponding number of mounting sleeves 9 are fixed to the designated positions on the mounting shaft 71 using the second fastening bolts 10. Finally, the locking bolts 13 are used to secure the corresponding type of... The slitting blade 12 is mounted on the rack and pinion drive sleeve 11. Then, the second motor 14 is started, driving the gear 15 to rotate and mesh with the rack and pinion drive sleeve 11, causing the rack and pinion drive sleeve 11 to move and adjust the length of the slitting blade 12. Then, the first motor 7 is started, driving the mounting shaft 71 and the mounting sleeve 9 to rotate and adjust the angle of the slitting blade 12. After adjustment, the slitting blade 12 contacts the material and cuts the material. This achieves the function of automatically adjusting the angle and length of the slitting blade 12, facilitating the movement of the slitting blade 12, and meeting the slitting requirements of different materials.
[0022] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims
1. A movable, adjustable slitting knife, characterized in that, It includes a base (1), casters (2), telescopic columns (5), first fastening bolts (6), first motor (7), mounting shaft (71) and a cutting assembly. Multiple casters (2) are rotatably connected to the lower side of the base (1). Telescopic columns (5) are connected to the upper sides of both the left and right sides of the base (1). First fastening bolts (6) are threadedly connected to the sides of the telescopic columns (5) that are far apart from each other. The telescopic end of the telescopic column (5) on the left side is connected to the first motor (7). The output shaft of the first motor (7) is clamped to the mounting shaft (71). The mounting shaft (71) is rotatably connected to the telescopic end of the telescopic column (5) on the right side through a bearing. Multiple scale grooves (8) are opened on the mounting shaft (71). A cutting assembly capable of cutting materials is provided on the mounting shaft (71). The slitting assembly includes a mounting sleeve (9), a second fastening bolt (10), a rack drive sleeve (11), a slitting knife (12), a locking bolt (13), a second motor (14), and a gear (15). Multiple mounting sleeves (9) are snapped onto the mounting shaft (71). Each mounting sleeve (9) is threaded with a second fastening bolt (10), which contacts the mounting shaft (71). Each mounting sleeve (9) is slidably connected with a rack drive sleeve (11), which is snapped with a slitting knife (12). Each rack drive sleeve (11) has two locking bolts (13) threadedly connected to its left side, which contacts the adjacent slitting knife (12). Each mounting sleeve (9) has a second motor (14) connected to its right side, and each second motor (14) has a gear (15) connected to its output shaft, which meshes with the adjacent rack drive sleeve (11).
2. A movable adjustable slitting knife according to claim 1, characterized in that, Each telescopic column (5) is provided with a reinforcing block between itself and the base (1).
3. A movable adjustable slitting knife according to claim 1, characterized in that, A knob is provided on the first fastening bolt (6).
4. A movable adjustable slitting knife according to claim 1, characterized in that, It also includes support feet (3), and the base (1) has multiple support feet (3) connected by threads on the lower side.
5. A movable adjustable slitting knife according to claim 1, characterized in that, It also includes a counterweight (4), and the counterweight (4) is connected to the upper rear side of the base (1).