Circular knife bent shaft slitting knife convenient for adjusting and controlling spacing

Abstract

The utility model discloses a circular knife curved shaft slitting knife convenient to adjust and control spacing, which comprises a support device, displacement devices are sleeved on the outer ring of the support device in a sliding manner at equal intervals, and alignment devices are inserted on the inner sides of the displacement devices in a sliding manner and comprise slitting knives, double-thread screws and nuts, the double-thread screws are connected with the displacement devices in a sliding manner, and the nuts are connected with the displacement devices in a sliding manner. The double-thread screw is inserted into an inner ring of the slitting cutter in a sliding mode, the double-thread screw is annularly arranged, the nuts are connected to the two ends of an outer ring of the double-thread screw in a threaded and sleeved mode, the displacement device comprises a supporting side frame, positioning keys, a screw, an extending base frame, a plastic gasket and a round hole, the positioning keys are fixedly installed on the two sides of the inner ring of the supporting side frame, and the screw is fixedly installed on the two sides of the outer ring of the supporting side frame. The extending base frames are symmetrically and fixedly installed at the side ends of the supporting side frames, and the screw rods are inserted into the centers of the interiors of the extending base frames in a threaded mode. Through the arrangement of the alignment device, the displacement device and the supporting device, the purpose of adjusting the distance between the slitting cutters is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of slitting knives, in particular to a circular knife bent shaft slitting knife convenient for adjusting the spacing. Background Technique

[0002] A slitting knife is a special tool for cutting wide-width materials (such as coils, cloth, paper, etc.) into multiple narrow-width materials. The slitting knife is usually installed on a slitting machine or a slitting cutter, and the slitting of the material is achieved through rotation and cutting actions. The material, structure and precision of the slitting knife have a direct impact on the slitting effect.

[0003] For example, the circular knife bent shaft slitting knife with the Chinese patent publication number CN220972593U includes a clamping groove, a first fastening screw, a sleeve shaft, an adjusting shaft, a matching connecting shaft, a second fastening screw, a combined guide rod and a locking clamp block. An adjusting shaft is slidably adjusted on the matching connecting shaft, and a combined guide rod is slidably adjusted on the adjusting shaft. The second fastening screw is screwed to be extruded to fix the adjusting shaft and the combined guide rod. A sleeve shaft is slidably connected to the combined guide rod. A clamping groove is opened at the upper end of the sleeve shaft, and a locking clamp block is arranged in the middle of the clamping groove. The locking clamp block can clamp the top of the sleeve shaft. A first fastening screw is arranged at the bottom end of the sleeve shaft, and the sleeve shaft is limited and fixed to the combined guide rod through the first fastening screw.

[0004] When the slitting knife in the above patent is used, it can only achieve the purpose of slitting treatment. When the existing slitting knives are used, most of them have fixed knife positions, so that the workpiece can only be cut into specified sizes, resulting in the phenomenon that the existing slitting knives cannot adjust the spacing during use. Therefore, a device is needed to improve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a circular knife bent shaft slitting knife convenient for adjusting the spacing, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A circular knife bent shaft slitting knife convenient for adjusting the spacing, including a support device, a displacement device is slidably sleeved on the outer ring of the support device at equal intervals, a positioning device is slidably inserted into the inner side of the displacement device. The positioning device includes a slitting knife, a double-headed screw and a nut. The double-headed screw is slidably inserted into the inner ring of the slitting knife, and the double-headed screw is arranged in a ring shape. The nut is threadedly sleeved on both ends of the outer ring of the double-headed screw.

[0007] Preferably, the displacement device includes a support side frame, a positioning key, a screw rod, an extension base frame, a plastic gasket, and a circular hole. The positioning key is fixedly installed on both sides of the inner ring of the support side frame. The extension base frame is symmetrically and fixedly installed on the side ends of the support side frame. The screw rod is threadedly inserted into the center of the interior of the extension base frame. The plastic gasket is rotatably installed at one end of the screw rod close to the positioning key. The circular hole is opened in the interior of the support side frame, and the circular holes are distributed in a ring shape.

[0008] Preferably, the support device includes a displacement groove, a connecting rod, and a machine shaft. The displacement groove is opened at the centers on both sides of the machine shaft. The connecting rod is fixedly installed at the centers of both ends of the machine shaft.

[0009] Preferably, the double-headed screw rod is slidably inserted into the interior of the circular hole, and the positioning key is slidably inserted into the interior of the displacement groove.

[0010] Preferably, scale lines are marked on the top and bottom of the machine shaft, and the inner ring of the support side frame is in fit with the outer ring of the machine shaft.

[0011] Preferably, circular holes are opened in the interior of the slitting knife, and the circular holes are distributed in a ring shape.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] When the present device is in use, through the split design of the two support side frames, it is convenient to replace the slitting knife. At the same time, when the nut is screwed, it can be butt-jointed and fitted with the support side frame, so that the slitting knife can be installed between the two support side frames. At the same time, the support side frame can move linearly on the outer ring of the machine shaft, so that the support side frame can drive the slitting knife to move to the designated working area. Moreover, the support side frame can accurately move a distance, so that when the plastic gasket is fastened to the machine shaft, the slitting knife can be fixed at the designated position for work, completing the work of adjusting the spacing of the slitting knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the alignment device structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the displacement device structure of the present utility model;

[0017] Figure 4 is a schematic diagram of the support device structure of the present utility model.

[0018] In the figure: 1 - Alignment device, 2 - Displacement device, 3 - Support device, 4 - Slitting knife, 5 - Bolt, 6 - Nut, 7 - Support side frame, 8 - Positioning key, 9 - Screw, 10 - Extension base frame, 11 - Plastic gasket, 12 - Round hole, 13 - Displacement groove, 14 - Connecting rod, 15 - Machine shaft. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-4 , an embodiment provided by the present invention: A circular knife bending shaft slitting knife convenient for adjusting the spacing, including a support device 3. A displacement device 2 is slidably sleeved on the outer ring of the support device 3 at equal intervals. A positioning device 1 is slidably inserted into the inner side of the displacement device 2. The positioning device 1 includes a slitting knife 4, a double-headed screw 5 and a nut 6. The double-headed screw 5 is slidably inserted into the inner ring of the slitting knife 4, and the double-headed screw 5 is arranged in a ring shape. The nut 6 is threadedly sleeved at both ends of the outer ring of the double-headed screw 5.

[0021] The displacement device 2 includes a support side frame 7, a positioning key 8, a screw 9, an extension base frame 10, a plastic gasket 11 and a round hole 12. The positioning key 8 is fixedly installed on both sides of the inner ring of the support side frame 7. The extension base frame 10 is symmetrically fixedly installed on the side ends of the support side frame 7. The screw 9 is threadedly inserted into the inner center of the extension base frame 10. The plastic gasket 11 is rotatably installed at one end of the screw 9 close to the positioning key 8. The round hole 12 is opened in the inner part of the support side frame 7, and the round holes 12 are distributed in a ring shape. Through the setting of the round holes 12, the support side frame 7 can be slidably sleeved on the double-headed screw 5.

[0022] The support device 3 includes a displacement groove 13, a connecting rod 14 and a machine shaft 15. The displacement groove 13 is opened at the center of both sides of the machine shaft 15. The connecting rod 14 is fixedly installed at the center of both ends of the machine shaft 15. By connecting with external equipment through the connecting rod 14, the machine shaft 15 can be driven to rotate.

[0023] The double-headed screw 5 is slidably inserted into the inner part of the round hole 12, and the positioning key 8 is slidably inserted into the inner part of the displacement groove 13, which can ensure that the support side frame 7 moves along a straight line.

[0024] Scale lines are marked on the top and bottom of the machine shaft 15, and the inner ring of the support side frame 7 fits with the outer ring of the machine shaft 15, which is convenient for the support side frame 7 to align with the scale lines on the machine shaft 15.

[0025] A circular hole 12 is formed inside the slitting knife 4, and the circular holes 12 are distributed in a ring shape, facilitating the butt joint between the support side frame 7 and the slitting knife 4.

[0026] Working principle: During use, first unscrew the nut 6 from the double-headed screw rod 5, then slide the two support side frames 7 onto the double-headed screw rod 5 respectively, so that the circular hole 12 can be sleeved on the double-headed screw rod 5. Subsequently, the nut 6 can be moved onto the double-headed screw rod 5, and then the nut 6 is screwed to be fastened to the support side frame 7, so that the two support side frames 7 can be firmly attached to the slitting knife 4. Then, the support side frame 7 can be moved onto the machine shaft 15, and the support side frame 7 is slid on the machine shaft 15. Since the positioning key 8 is located inside the displacement groove 13, it can ensure that the support side frame 7 moves in a straight line, preventing the support side frame 7 from tilting or rotating again. At the same time, while the support side frame 7 is moving, the inner ring of the support side frame 7 fits with the outer surface of the machine shaft 15, and scale lines are marked on the top and bottom surfaces of the machine shaft 15, so that the support side frame 7 can be displaced on the scale lines, facilitating the user to accurately control the displacement amount of the support side frame 7. Then, when the support side frame 7 is moved to the designated position, the screw rod 9 can be screwed and rotated. Since the plastic gasket 11 is vertically aligned with the inside of the displacement groove 13, when the screw rod 9 is screwed and rotated to the limit position, it can drive the plastic gasket 11 to be fastened to the machine shaft 15, so that the support side frame 7 can be fixed at the designated working position. Then, the connecting rod 14 is connected to an external rotating component, so that the rotating component can drive the entire machine shaft 15 to rotate, and thus the slitting knife 4 can cut the workpiece to complete the work. When this device is in use, the slitting knife 4 and the two support side frames 7 can be quickly aligned and installed. When the nut 6 is screwed to the limit position, it can drive the two support side frames 7 to be fastened to the slitting knife 4, facilitating the quick assembly and butt joint of the slitting knife 4 and the support side frame 7. At the same time, since the support side frame 7 slides on the machine shaft 15 and the positioning key 8 is located inside the displacement groove 13, the support side frame 7 can slide in a straight line on the machine shaft 15, facilitating the alignment of the support side frame 7 with the scale line on the machine shaft 15, and facilitating the user to accurately control the displacement amount of the slitting knife 4. Moreover, the screw rod 9 can be screwed to the limit position to drive the plastic gasket 11 to be fastened to the machine shaft 15, so that the support side frame 7 can be fixed at the designated position for work.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular blade curved shaft slitting knife that is easy to adjust the spacing, comprising a support device (3), a displacement device (2) is equidistantly slidably sleeved on the outer ring of the support device (3), and a positioning device (1) is slidably inserted into the inner side of the displacement device (2), characterized in that: The alignment device (1) comprises a slitting knife (4), a double-headed screw (5) and a nut (6); the double-headed screw (5) is slidably inserted into the inner ring of the slitting knife (4), and the double-headed screw (5) is arranged in a ring shape; the nut (6) is threadedly sleeved on both ends of the outer ring of the double-headed screw (5).

2. A circular blade curved shaft slitting knife that is easy to adjust the spacing according to claim 1, characterized in that: The displacement device (2) comprises a supporting side frame (7), a positioning key (8), a screw (9), an extension base frame (10), a plastic gasket (11) and a circular hole (12); the positioning key (8) is fixedly mounted on both sides of the inner circle of the supporting side frame (7); the extension base frame (10) is symmetrically fixedly mounted on the side ends of the supporting side frame (7); the screw (9) is threadedly inserted in the inner center of the extension base frame (10); the plastic gasket (11) is rotatably mounted on one end of the screw (9) close to the positioning key (8); the circular hole (12) is opened inside the supporting side frame (7), and the circular holes (12) are distributed in a ring shape.

3. A circular blade curved shaft slitting knife that is easy to adjust the spacing according to claim 2, characterized in that: The supporting device (3) comprises a displacement groove (13), a connecting rod (14) and a machine shaft (15); the displacement groove (13) is arranged at the center of both sides of the machine shaft (15); and the connecting rod (14) is fixedly mounted at the center of both ends of the machine shaft (15).

4. The circular blade curved shaft slitting knife with easy adjustment of spacing according to claim 3, characterized in that: The double-headed screw (5) is slidably inserted into the inside of the circular hole (12), and the positioning key (8) is slidably inserted into the inside of the displacement groove (13).

5. The circular blade curved shaft slitting knife with easy adjustment of spacing according to claim 4, characterized in that: The top and bottom of the machine shaft (15) are marked with scale lines, and the inner ring of the supporting side frame (7) fits with the outer ring of the machine shaft (15).

6. A circular blade curved shaft slitting knife that is easy to adjust the spacing according to claim 5, characterized in that: The slitting knife (4) is provided with circular holes (12) inside, and the circular holes (12) are distributed in a ring shape.

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