Cutter shaft structure

Abstract

The utility model relates to a cutter shaft structure, two ends of the cutter shaft structure are respectively provided with a mounting part and a transmission part, and the cutter shaft structure is provided with a connecting part between the mounting part and the transmission part; a connecting ring is arranged at one end, close to the mounting part, of the connecting part; a flow guide groove is formed in the outer wall of the connecting ring; according to the cutter shaft structure, the flow guide groove is formed in the connecting ring of the cutter shaft structure, cooling liquid falling on the cutter shaft structure is collected and blocked, the cooling liquid cannot continuously flow along the outer wall of the cutter shaft structure, and then other precise parts installed on the cutter shaft structure are prevented from being damaged due to corrosion of the cooling liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of coiled material slitting, in particular to a knife shaft structure. Background Art

[0002] Coil slitting usually refers to slitting a wider coil into multiple groups of coils. Generally, a slitting knife is installed on the knife shaft of a coil slitting machine to slitting the coil. The knife shaft of an existing coil slitting machine is often installed on the equipment through a bearing sleeve for rotation. Since the knife shaft needs to pass through the bearing sleeve and rotate relatively, there is a gap between the knife shaft and the bearing sleeve. The slitting knife rotates at a high speed to cut the coil, and a coolant nozzle needs to be used to spray and cool the slitting knife. As a result, the coolant easily enters the bearing sleeve along the outer wall of the knife shaft and causes corrosion and damage to the bearing. If a rubber ring is installed between the knife shaft and the bearing sleeve, the high-speed rotation of the knife shaft is very likely to wear the rubber ring, causing it to fail, and the bearing in the bearing sleeve cannot be protected from corrosion by the coolant. Utility Model Content

[0003] In view of this, the utility model provides a knife shaft structure for solving the problem in the prior art that the coolant easily flows along the outer wall of the knife shaft and corrodes other precision parts.

[0004] In order to achieve one, part or all of the above purposes or other purposes, the utility model proposes:

[0005] A knife shaft structure, wherein a mounting portion and a transmission portion are respectively provided at both ends of the knife shaft structure, and a connecting portion is provided between the mounting portion and the transmission portion; the connecting portion is provided with a connecting ring at one end close to the mounting portion, and a guide groove is provided on the outer wall of the connecting ring.

[0006] Furthermore, the cross section of the guide groove is trapezoidal, and the inclination of a side wall of the guide groove close to the mounting portion is greater than the inclination of a side wall of the guide groove away from the mounting portion.

[0007] A knife seat comprises the above-mentioned knife shaft structure, a bearing component and a base, wherein the bearing component is coaxially mounted on the connecting portion of the knife shaft structure, the base is provided with a mounting hole, and the bearing component is sleeved in the mounting hole.

[0008] Furthermore, it also includes a locking member, which is a first locking screw. The base is provided with a first threaded hole connected to the mounting hole. The first locking screw is threadedly connected to the first threaded hole. One end of the first locking screw abuts against the outer wall of the bearing member to limit the axial displacement of the bearing member.

[0009] Furthermore, it also includes a locking piece, which is a second locking screw. The base is provided with a cutout connecting the end face of the base and the mounting hole. The base is provided with a second threaded hole passing through the cutout. The second locking screw is threadedly connected to the second threaded hole to clamp the bearing piece to the mounting hole.

[0010] Furthermore, it also includes a locking piece, which includes a clamping block and a third locking screw. The mounting hole is a semicircular hole, and the base is provided with third threaded holes on both sides of the mounting hole. The clamping block is provided with a semicircular opening, and the clamping block is provided with a through hole. The third locking screw passes through the clamping block and is threadedly connected to the third threaded hole, and the bearing member is fixed to the mounting hole through the clamping block.

[0011] Furthermore, the bearing component includes a bearing sleeve and a bearing, one end of the bearing sleeve is provided with a mounting groove for mounting the bearing, one end of the connecting ring is embedded in the mounting groove, the other end of the connecting ring is connected to the mounting portion, and the guide groove is placed outside the mounting groove.

[0012] Furthermore, it also includes a limiting ring, the connecting part is provided with a first external thread at one end close to the transmission part, the limiting ring is installed at the first external thread and abuts against the end wall of the bearing sleeve away from the mounting part.

[0013] Furthermore, it also includes two chucks and a locking nut, the mounting portion is provided with a second external thread, the two chucks are mounted on the mounting portion, and a tool clamping space is formed between the two chucks, the locking nut is installed at the second external thread, and the two chucks are fixed to the mounting portion by the locking nut; a plurality of leveling through holes are provided on the chuck.

[0014] A coiled material slitting machine comprises the above-mentioned knife holder.

[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0016] By opening a guide groove on the connecting ring of the cutter shaft structure, the coolant falling on the cutter shaft structure is collected and blocked, so that the coolant cannot continue to flow along the outer wall of the cutter shaft structure, thereby preventing other precision components installed on the cutter shaft structure from being corroded by the coolant and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the knife shaft in one of the embodiments of the present application;

[0019] Figure 2 This is a schematic diagram of the structure of the knife shaft structure and the bearing member in one of the embodiments of the present application;

[0020] Figure 3 An exploded view of a knife shaft structure and a bearing member in one embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the structure of a knife holder in one of the embodiments of the present application;

[0022] Figure 5 An exploded view of a tool holder in one of the embodiments of the present application;

[0023] Figure 6 This is a schematic diagram of the structure of the base and the locking member in one embodiment of the present application. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the structure of the base and the locking member in one embodiment of the present application. Figure 2 .

[0025] Reference numerals:

[0026] 1. A knife shaft structure, 10. A mounting portion, 100. A second external thread, 11. A transmission portion, 12. A connecting portion, 120. A connecting ring, 120a. A guide groove, 121. A first external thread, 2. A bearing member, 20. A bearing sleeve, 200. A mounting groove, 21. A bearing, 3. A locking member, 31. A first locking screw, 32. A second locking screw, 33. A third locking screw, 34. A clamping block, 4. A base, 40. A mounting hole, 41. A first threaded hole, 42. A second threaded hole, 43. A third threaded hole, 44. A notch, 5. A limiting ring, 6. A chuck, 60. A leveling through hole, 7. A locking nut. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0030] See attached Figure 1 -Attached Figure 2 The present embodiment discloses a knife shaft structure 1, on which a mounting portion 10 and a transmission portion 11 are respectively provided at both ends, and a connecting portion 12 is provided between the mounting portion 10 and the transmission portion 11; the connecting portion 12 is provided with a connecting ring 120 at one end close to the mounting portion 10, and a guide groove 120a is provided on the outer wall of the connecting ring 120.

[0031] Specifically, the knife shaft structure 1 is mainly used in a coil slitting machine, and the knife shaft structure 1 is installed on the coil slitting machine through a bearing member 2; wherein, the mounting portion 10 of the knife shaft structure 1 is used to load the slitting knife, the connecting portion 12 is used to install the bearing member 2, and the transmission portion 11 is used to connect the motor coupling of the coil slitting machine. In order to facilitate the connection of the coupling to achieve rotation, the transmission portion 11 can adopt a quadrilateral, hexagonal or other special-shaped rod. In this embodiment, a hexagonal special-shaped rod is preferably used to facilitate the insertion of the coupling to achieve rotation.

[0032] Since the slitting knife installed on the knife shaft structure 1 will rotate at high speed with the knife shaft structure 1 to achieve the slitting of the coiled material, during this process, the slitting knife rotates at high speed and contacts the coiled material to generate heat. In order to cool the slitting knife, a coolant nozzle is often provided on the coil slitting machine to spray the slitting knife to achieve cooling. During this process, the coolant easily enters the bearing part 2 along the outer wall of the connecting ring 120, thereby causing the bearing 21 in the bearing part 2 to be soaked in the coolant and corroded and damaged. For this reason, in this embodiment, a guide groove 120a is provided on the outer wall of the connecting ring 120. By providing the guide groove 120a, the coolant falling to the outer wall of the connecting ring 120 is gathered in the guide groove 120a and is affected by the guide groove 12 0a is blocked and cannot continue to flow along the outer wall of the connecting ring 120 toward the bearing part 2. During the continuous rotation of the blade shaft structure 1, the coolant in the guide groove 120a is affected by the centrifugal force and is thrown to a position far away from the blade shaft structure 1, thereby preventing the coolant from flowing toward the bearing part 2 and corroding the internal bearing 21, and this method will not affect the normal rotation of the blade shaft structure 1. In general, this embodiment opens a guide groove 120a on the connecting ring 120 of the blade shaft structure 1 to collect and block the coolant that falls on the blade shaft structure 1, so that the coolant cannot continue to flow along the outer wall of the blade shaft structure 1, thereby preventing other precision components installed on the blade shaft structure 1 from being corroded by the coolant and causing damage.

[0033] See attached Figure 2 , the cross section of the guide groove 120a can be a trapezoid, a triangle, a square or a semicircle, etc. In the present embodiment, the cross section of the guide groove 120a is preferably a trapezoid, and the inclination of the side wall of the guide groove 120a close to the mounting portion 10 is greater than the inclination of the side wall of the guide groove 120a away from the mounting portion 10. The guide groove 120a with a trapezoidal cross section can increase the occupied area of ​​the guide groove 120a on the outer wall of the connecting ring 120, thereby receiving more coolant falling on the outer wall of the connecting ring 120; in addition, by making the inclination of the side wall of the guide groove 120a close to the mounting portion 10 greater than the inclination of the side wall of the guide groove 120a away from the mounting portion 10, that is, the guide groove The side wall of 120a close to the bearing member 2 is steeper. When the knife shaft structure 1 rotates, the coolant in the guide groove 120a will be thrown out along the side wall of the guide groove 120a. The steeper side wall prevents the coolant from being thrown onto the end wall of the bearing member 2, thereby preventing the coolant from entering the interior of the bearing member 2 during the throwing process. The more inclined design of the side wall of the guide groove 120a close to the mounting portion 10 allows the coolant to continue to hit the slitting knife loaded on the mounting portion 10 after being thrown out from the guide groove 120a along the side wall, thereby achieving a further cooling effect on the slitting knife. It should also be noted that the number of guide grooves 120a can also be set to one, two or more according to the actual flow rate.

[0034] See attached Figure 3 -Attached Figure 7 The embodiment of the present application also provides a knife seat, including the above-mentioned knife shaft structure 1, bearing member 2, locking member 3 and base 4, the bearing member 2 is coaxially mounted on the connecting portion 12 of the knife shaft structure 1, the base 4 is provided with a mounting hole 40, the bearing member 2 is sleeved in the mounting hole 40, specifically, in actual application, the base 4 is fixed on the coil slitting machine, and the motor of the coil slitting machine is installed, and the knife shaft structure 1 is fixed on the base 4 through the bearing member 2, so that the transmission part 11 of the knife shaft structure 1 is connected to the motor coupling, in order to limit the bearing member 2 on the base 4 does not produce displacement. In this embodiment, a locking member 3 is installed on the base 4, so that the bearing member 2 cannot produce displacement on the base 4, thereby improving the structural stability of the tool holder. In this embodiment, in order to facilitate the rapid limit locking of the bearing member 2, the locking member 3 is preferably a first locking screw 31, and a first threaded hole 41 connected to the mounting hole 40 is correspondingly provided on the base 4. The first locking screw 31 is threadedly connected to the first threaded hole 41, and one end of the first locking screw 31 is abutted against the outer wall of the bearing member 2 to limit the displacement of the bearing member 2 in the mounting hole 40.

[0035] In actual application, slitting knives of different specifications can be installed on multiple knife shaft structures 1 with bearing parts 2, and the slitting knives can be leveled and placed in the specified position. When it is necessary to replace the slitting knives of different specifications to slit the coiled material, it is only necessary to twist the first locking screw 31 to release the limit of the bearing part 2 and the knife shaft structure 1 together with the bearing part 2 can be disassembled, and then the knife shaft structure 1 with the slitting knives of the specified specifications can be inserted into the mounting hole 40 of the base 4, and the first locking screw 31 can be turned to abut against the outer wall of the bearing part 2 to complete the replacement; in general, the knife holder is provided with a bearing part 2 on the knife shaft structure 1, and slitting knives of different specifications are installed on multiple knife shaft structures 1, and the slitting knives are leveled. According to actual needs, the knife shaft structure 1 equipped with slitting knives of different specifications can be quickly loaded into the mounting hole 40 of the base 4, thereby completing the rapid replacement of the slitting knives, and there is no need to spend a lot of time on leveling and fixing the slitting knives during use.

[0036] It should also be noted that, according to the size of the knife shaft structure 1 and the slitting knife, multiple first locking screws 31 and first threaded holes 41 are provided, thereby improving the connection stability of the bearing component 2 on the knife seat and avoiding the bearing component 2 from being offset in the mounting hole 40 during operation.

[0037] See attached Figure 6In other embodiments, the locking member 3 can also be preferably a second locking screw 32, and the base 4 is provided with a cutout 44 connecting the end face of the base 4 and the mounting hole 40, and the base 4 is provided with a second threaded hole 42 that passes through the cutout 44, and the second locking screw 32 is threadedly connected with the second threaded hole 42 to clamp the bearing member 2 on the mounting hole 40; specifically, the cutout 44 is an L-shaped cutout to facilitate processing and forming, and the second threaded hole 42 has a threaded wire on the inner side wall of the cutout 44 away from the end face of the base 4, and the outer side wall of the cutout 44 close to the end face of the base 4 is a through hole structure, so that the second locking screw 32 passes through the outer side wall of the cutout 44 and is threadedly connected with the inner side wall of the cutout 44, and the bearing member 2 is clamped by continuously rotating the second locking screw 32, so that the bearing member 2 cannot be displaced on the mounting hole 40 of the base 4, thereby improving the structural stability of the tool holder.

[0038] See attached Figure 7 In other embodiments, the locking member 3 can also be preferably a fully open clamping structure. Specifically, the locking member 3 includes a clamping block 34 and a third locking screw 33. The mounting hole 40 is a semicircular hole. The base 4 is provided with third threaded holes 43 on both sides of the mounting hole 40. The clamping block 34 is provided with a semicircular opening. The clamping block 34 is provided with a through hole. The third locking screw 33 penetrates the clamping block 34 and is threadedly connected with the third threaded hole 33. The bearing member 2 is fixed to the mounting hole 40 through the clamping block 34. When in use, the bearing member 2 is placed on the mounting hole 40 designed with a semicircular hole, the clamping block 34 is covered on the bearing member 2, and then the clamping block 34 is threadedly connected with the third threaded hole 43 on the base 4 through the third locking screw 33. By continuously rotating the third locking screw 33, the clamping block 34 presses and fixes the bearing member 2 on the mounting hole 40 of the base 4.

[0039] In order to facilitate the connection between the bearing component 2 and the knife shaft structure 1, improve the compactness of the overall structure, and ensure that the knife shaft structure 1 can rotate at high speed in the bearing component 2, the bearing component 2 includes a bearing sleeve 20 and a bearing 21. One end of the bearing sleeve 20 is provided with a mounting groove 200 for installing the bearing 21. One end of the connecting ring 120 is embedded in the mounting groove 200, and the other end of the connecting ring 120 is connected to the mounting portion 10. The guide groove 120a is placed outside the mounting groove 200. The connecting ring 120 can be used to axially limit the bearing 21 in the mounting groove 200, thereby preventing the bearing component 2 from moving toward the mounting portion 10. There is a gap between the connecting ring 120 and the mounting groove 200 to ensure that the knife shaft structure 1 can rotate at high speed. At the same time, the guide groove 120a is placed outside the mounting groove 200 to prevent the coolant in the guide groove 120a from directly entering the mounting groove 200 and causing corrosion to the bearing 21.

[0040] Correspondingly, in order to limit the displacement of the bearing member 2 toward the transmission part 11, the tool holder also includes a limiting ring 5. A first external thread 121 is provided at one end of the connecting part 12 close to the transmission part 11. The limiting ring 5 is installed at the first external thread 121 and abuts against the end wall of the bearing sleeve 20 away from the mounting part 10. Specifically, a groove can be provided on the end wall of the bearing sleeve 20 away from the mounting part 10 to accommodate the limiting ring 5, so that the tool holder structure is more compact.

[0041] See attached Figure 3 The knife holder also includes two chucks 6 and a locking nut 7. The mounting portion 10 is provided with a second external thread 100. The two chucks 6 are mounted on the mounting portion 10, and a slitting knife clamping space is formed between the two chucks 6. The locking nut 7 is installed at the second external thread 100, and the two chucks 6 are fixed to the mounting portion 10 by the locking nut 7. It should also be noted that after the slitting knife is reloaded between the two chucks 6, the chucks 6 and a plurality of leveling studs are required to level and fix the slitting slices to avoid the slitting knife being used. In the process, the slitting knife may tilt or the blade may shake. For this reason, the chuck 6 of the present embodiment is further provided with a plurality of leveling holes 60. Specifically, the plurality of leveling holes 60 are distributed near the edge of the chuck 6, and the plurality of leveling holes 60 are equidistantly distributed on the chuck 6. The inner wall of the leveling hole 60 is provided with an internal thread. By installing a leveling stud into the leveling hole 60, the slitting knife between the two chucks 6 can be leveled and fixed, so as to avoid the slitting knife tilting or the blade shaking during use.

[0042] In actual use, a chuck 6, a slitting knife, and another chuck 6 are sequentially mounted on the mounting portion 10 of the knife shaft structure 1, and then connected to the second external thread 100 through a locking nut 7. The two chucks 6 and the slitting knife are pressed against the end wall of the connecting ring 120 by rotating the locking nut 7, and finally leveling and fixing are achieved by passing the leveling stud through the leveling hole 60.

[0043] The embodiment of the present application also provides a coil slitting machine, comprising the above-mentioned knife holder.

[0044] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A knife shaft structure, characterized in that: The knife shaft structure has a mounting portion and a transmission portion at both ends thereof, and a connecting portion is provided between the mounting portion and the transmission portion; the connecting portion has a connecting ring at one end thereof close to the mounting portion, and a guide groove is provided on the outer wall of the connecting ring.

2. A knife shaft structure according to claim 1, characterized in that: The cross section of the guide groove is trapezoidal, and the inclination of a side wall of the guide groove close to the mounting portion is greater than the inclination of a side wall of the guide groove away from the mounting portion.

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