Cutter shaft structure of slitting machine

Abstract

The utility model relates to the technical field of slitting machine cutter shafts, in particular to a slitting machine cutter shaft structure which comprises a cutter shaft body, shaft shoulders are arranged at the two ends of the cutter shaft body, connecting sleeves are connected to the positions of the shaft shoulders, and locking nuts are connected to the outer portions of the connecting sleeves in a threaded mode. The connecting sleeve and the cutter shaft body are detachably connected or fixed in a welded mode, the connecting sleeve and the cutter shaft are detachable, the connecting sleeve is convenient to replace, the cutter shaft body does not need to be replaced, cost is saved, and replacement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of slitting machines, and in particular to a slitting machine cutter shaft structure. Background Technology

[0002] A strip slitting machine is a processing device used to longitudinally slit wide steel coils into multiple narrow strips. It is widely used in industries such as steel, non-ferrous metals, automobiles, home appliances, and hardware. Before the production of thin steel pipes, the wider strips need to be cut into multiple narrower strips, which are then used to process the thin steel pipes.

[0003] The slitting machine's cutter shaft houses cutting tools, spacers, and buffer pads. Both ends of the cutter shaft are threaded, and lock nuts are threaded onto these shafts. Because the distance between adjacent cutters needs to be adjusted according to the required strip width during cutting, the lock nuts frequently need to be disassembled, leading to damage to the threads on the cutter shaft. Damaged threads necessitate replacing the entire cutter shaft, resulting in high maintenance costs. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present invention provides a slitting machine cutter shaft structure.

[0005] This utility model provides a slitting machine cutter shaft structure, which adopts the following technical solution:

[0006] A slitting machine cutter shaft structure includes a cutter shaft body, with shoulders at both ends of the cutter shaft body, and connecting sleeves connected at the shoulder positions, with locking nuts threaded onto the external of the connecting sleeves.

[0007] Optionally, the connecting sleeve is welded and fixed to the cutter shaft body.

[0008] Optionally, a countersunk hole is provided on the circumferential surface of the connecting sleeve, a second connecting hole is provided on the cutter shaft body, and a countersunk bolt is provided on the connecting sleeve. The countersunk bolt passes through the countersunk hole and is threadedly connected to the second connecting hole.

[0009] Optionally, a positioning block is fixed on the end face of the shoulder, and a positioning hole is provided on the end face of the connecting sleeve. The positioning block is inserted into the positioning hole, and a first connecting hole is provided on the positioning block, through which a countersunk bolt passes.

[0010] Optionally, the cutter shaft body has multiple receiving holes on its circumferential surface. The bottom of each receiving hole has a first fixing hole. The shoulder end face of the cutter shaft body has an insertion hole. An insertion block is fixed on the end face of the connecting sleeve. The insertion block is inserted into the insertion hole. The insertion block has a second fixing hole, which is aligned with the first fixing hole. A pressure rod, a fixing rod, and a spring are provided in the receiving hole. The fixing rod is fixed to the pressure rod, and the spring is fixed between the pressure rod and the bottom of the receiving hole. After the locking nut is tightened, the locking nut compresses the pressure rod, and the fixing rod passes through the first fixing hole and inserts into the second fixing hole.

[0011] Compared with the prior art, the present invention has the following technical effects:

[0012] When the threads on the cutter shaft body are damaged, it is not necessary to replace the entire cutter shaft body; only the connecting sleeve needs to be replaced, which saves costs and does not require disassembling the entire cutter shaft, thus improving replacement efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0014] Figure 2 This is a schematic diagram of the connecting sleeve and locking nut in Embodiment 1 of this utility model;

[0015] Figure 3 This is a schematic diagram of the connection between the connecting sleeve and the cutter shaft body in Embodiment 2 of this utility model;

[0016] Figure 4 This is a schematic diagram of the positioning hole and positioning block in Embodiment 2 of this utility model;

[0017] Figure 5 This is a schematic diagram of the connection between the connecting sleeve and the cutter shaft body in Embodiment 3 of this utility model;

[0018] Figure 6 This is a schematic diagram of the pressure rod, positioning rod, and spring in Embodiment 3 of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Cutter shaft body; 11. Pressure ring; 12. Spacer; 13. Cutting tool; 14. Buffer pad; 2. Connecting sleeve; 3. Locking nut; 4. Positioning block; 41. Positioning hole; 5. Countersunk hole; 51. First connecting hole; 52. Second connecting hole; 53. Countersunk bolt; 6. Receiving hole; 61. Lowering rod; 62. Fixing rod; 63. Spring; 7. Insertion hole; 71. Insertion block; 8. First fixing hole; 81. Second fixing hole. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 The present invention will be described in further detail below.

[0021] Embodiment 1 of this utility model

[0022] Reference Figure 1 and Figure 2 This utility model discloses a slitting machine cutter shaft structure, including a cutter shaft body 1. Both ends of the cutter shaft body 1 are provided with shaft shoulders. A connecting sleeve 2 is welded at the shaft shoulder position. The outer circumferential surface of the connecting sleeve 2 is provided with threads. A locking nut 3 is threadedly connected to the outside of the connecting sleeve 2.

[0023] Each of the two locking nuts 3 has a pressure ring 11 on one side close to each other. The locking nut 3 abuts against the pressure ring 11, and the pressure ring 11 abuts against the spacer 12, the cutter 13, and the buffer pad 14, thereby fixing the cutter 13. When the thread on the connecting sleeve 2 is damaged, the weld between the connecting sleeve 2 and the cutter shaft body 1 is cut off, and a new connecting sleeve 2 is installed. There is no need to replace the cutter shaft body 1, which reduces costs.

[0024] Embodiment 2 of this utility model

[0025] Reference Figure 3 and Figure 4 The difference from Embodiment 1 is that the connection method between the connecting sleeve 2 and the cutter shaft body 1 is different. Three positioning blocks 4 are fixed on the end face of the shaft shoulder, and the three positioning blocks 4 are evenly distributed along the axis of the cutter shaft body 1.

[0026] Three positioning holes 41 are provided on the end face of the connecting sleeve 2, and each positioning block 4 corresponds to one positioning hole 41. The positioning block 4 is inserted into the positioning hole 41. Three countersunk holes 5 are provided on the circumferential surface of the connecting sleeve 2. A first connecting hole 51 is provided on the positioning block 4, and the axis of the countersunk hole 5 coincides with that of the first connecting hole 51. A second connecting hole 52 is provided on the cutter shaft body 1, and each countersunk hole 5 corresponds to one connecting hole. A countersunk bolt 53 is provided at the position of the countersunk hole 5. The countersunk bolt 53 passes through the countersunk hole 5 and the first connecting hole 51 and is threadedly connected to the first connecting hole 51.

[0027] When installing the connecting sleeve 2, align the positioning block 4 with the corresponding positioning hole 41. After the positioning block 4 is inserted into the positioning hole 41, align the countersunk hole 5 with the first connecting hole 51 and the second connecting hole 52. Then, fix the connecting sleeve 2 to the cutter shaft body 1 with the countersunk bolt 53.

[0028] Embodiment 3 of this utility model

[0029] Reference Figure 5 and Figure 6The difference from Embodiment 1 is that the connection method between the connecting sleeve 2 and the cutter shaft body 1 is different. Three receiving holes 6 are opened on the circumferential surface of the cutter shaft body 1, and the three receiving holes 6 are evenly distributed along the axis of the cutter shaft body 1. An insertion hole 7 is opened on the shoulder end face of the cutter shaft body 1, and an insertion block 71 is fixed on the end face of the connecting sleeve 2. The insertion block 71 is inserted into the insertion hole 7.

[0030] The receiving hole 6 is equipped with a pressing rod 61 and a fixing rod 62. The diameter of the pressing rod 61 is larger than the diameter of the fixing rod 62. The fixing rod 62 is fixedly connected to the pressing rod 61. A spring 63 is fixed between the pressing rod 61 and the bottom of the receiving hole 6, and the spring 63 is sleeved with the fixing rod 62. A first fixing hole 8 is opened at the bottom of the receiving hole 6, and a second fixing hole 81 is opened on the plug-in block 71. After the plug-in block 71 is inserted into the plug-in hole 7, the first fixing hole 8 and the second fixing hole 81 are aligned.

[0031] The thickness of the locking nut 3 is greater than the thickness of the connecting sleeve 2. After the locking nut 3 is tightened, the inner wall of the locking nut 3 will squeeze the pressing rod 61, squeezing the pressing rod 61 into the receiving hole 6. The pressing rod 61 squeezes the spring 63, and the fixing rod 62 is inserted into the first fixing hole 8 and the second fixing hole 81, thereby fixing the plug block 71 and the cutter shaft body 1.

[0032] During disassembly, loosen the locking nut 3. After the inner wall of the locking nut 3 is separated from the lower pressure rod 61, the lower pressure rod 61 moves away from the second fixing hole 81 under the action of the spring force of the spring 63. The fixing rod 62 is separated from the second fixing hole 81, thus facilitating the disassembly of the connecting sleeve 2.

[0033] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A slasher arbor structure, characterized by: It includes a cutter shaft body (1), both ends of which are provided with shaft shoulders, and a connecting sleeve (2) is connected at the shaft shoulder position. A locking nut (3) is threaded onto the outside of the connecting sleeve (2).

2. The slasher arbor structure of claim 1, wherein: The connecting sleeve (2) is welded and fixed to the cutter shaft body (1).

3. The slasher arbor structure of claim 1, wherein: A countersunk hole (5) is provided on the circumferential surface of the connecting sleeve (2), a second connecting hole (52) is provided on the cutter shaft body (1), and a countersunk bolt (53) is provided on the connecting sleeve (2). The countersunk bolt (53) passes through the countersunk hole (5) and is threadedly connected to the second connecting hole (52).

4. The slasher arbor structure of claim 3 wherein: A positioning block (4) is fixed on the end face of the shoulder, and a positioning hole (41) is provided on the end face of the connecting sleeve (2). The positioning block (4) is inserted into the positioning hole (41). A first connecting hole (51) is provided on the positioning block (4), and a countersunk bolt (53) passes through the first connecting hole (51).

5. The slasher arbor structure of claim 1 wherein: Multiple receiving holes (6) are provided on the circumferential surface of the cutter shaft body (1). A first fixing hole (8) is provided at the bottom of the receiving hole (6). A plug-in hole (7) is provided on the shoulder end face of the cutter shaft body (1). A plug-in block (71) is fixed on the end face of the connecting sleeve (2). The plug-in block (71) is inserted into the plug-in hole (7). A second fixing hole (81) is provided on the plug-in block (71). The second fixing hole (81) is aligned with the first fixing hole (8). A pressing rod (61), a fixing rod (62) and a spring (63) are provided in the receiving hole (6). The fixing rod (62) is fixed to the pressing rod (61). The spring (63) is fixed between the pressing rod (61) and the bottom of the receiving hole (6). After the locking nut (3) is tightened, the inner part of the locking nut (3) squeezes the pressing rod (61). The fixing rod (62) passes through the first fixing hole (8) and is inserted into the second fixing hole (81).

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