Automatic locking type slitting tool

Abstract

The utility model discloses an automatic lock catch type longitudinal shearing tool belongs to longitudinal shearing tool technical field. An automatic lock catch type longitudinal shearing tool, including cutter head, cutter shaft and key strip, its characterized in that, the cutter shaft is set up with triangle groove, the key strip is installed in the triangle groove, the cutter head is through the axle hole of center and is installed on the cutter shaft, the side of key strip is provided with a plurality of lock catch holes along its length direction, and the inner wall of axle hole is set up with the key groove that cooperates with the key strip. The utility model discloses through the automatic lock catch cooperation of elastic locking part and lock catch hole, has realized the " one -key type " locking and unlocking of cutter head, utilizes the central long hole when disassembling and can unlock all cutter heads simultaneously, has improved the tool changing efficiency and equipment utilization greatly, the key strip bears the torque of circumference, and the elastic locking mechanism bears the axial locking and circumferential anti -rotation, forms the double -safety, fundamentally has prevented the axial excursion and circumferential micro - motion of cutter head in the high -speed operation.

Description

Technical Field

[0001] This utility model relates to the field of longitudinal shearing tools, and more specifically, to an automatic locking longitudinal shearing tool. Background Technology

[0002] In the field of metal strip slitting, the slitting machine is the core equipment, which cuts wide coils of material using multiple cutter discs mounted on a cutter shaft. Traditional slitting tools are generally installed and fixed using a "key drive + spacer positioning + end nut locking" method. This method is extremely cumbersome to install and disassemble; changing product specifications requires removing the end nuts, removing all spacers, and rearranging them, which is time-consuming and labor-intensive, severely impacting production efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic locking scissor to solve the above-mentioned deficiencies.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses an automatic locking type longitudinal shear, comprising a cutter disc, a cutter shaft, and a key bar. The cutter shaft has a triangular groove, the key bar is installed within the triangular groove, the cutter disc is fitted onto the cutter shaft through a central shaft hole, and the key bar has several locking holes along its length on its side. The inner wall of the shaft hole has a keyway that mates with the key bar, and the inner wall of the keyway has a mounting hole. An elastic locking element is installed in the mounting hole. When the cutter disc is fitted into a preset position on the cutter shaft, a portion of the elastic locking element engages with the locking hole under elastic force, achieving axial and circumferential locking of the cutter disc on the cutter shaft.

[0006] Preferably, the key bar has a central elongated hole along its length, one end of which is an open end for inserting an unlocking tool, and the other end is a closed end; when the elastic locking member is engaged in the locking hole, its end extends into the internal space of the central elongated hole.

[0007] Preferably, the key bar has a tapered surface near the sealing end for guiding installation.

[0008] Preferably, the elastic locking component includes a positioning post, a support spring, and a limiting plate. The positioning post is movably disposed in the mounting hole, the limiting plate is fixed to the end of the positioning post located in the mounting hole, and the support spring abuts against the limiting plate and the inner bottom surface of the mounting hole.

[0009] Preferably, the key bar is inserted into the triangular groove of the cutter shaft through the mounting strip at its bottom, and is fixed by bolts that penetrate the side wall of the cutter shaft and are screwed into the mounting strip.

[0010] Preferably, the end face of the cutter head near the shaft hole is provided with an annular protrusion ring. When multiple cutter heads are installed on the cutter shaft, the protrusion rings of adjacent cutter heads contact each other to determine the working gap between the cutter heads.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This utility model discloses an automatic locking type longitudinal shear, which achieves "one-click" locking and unlocking of the cutter head through the automatic locking cooperation between the elastic locking element and the locking hole. During disassembly, all cutter heads can be unlocked simultaneously using the central elongated hole, greatly improving the efficiency of tool changing and equipment uptime. The key bar bears the circumferential torque transmission, and the elastic locking mechanism bears the axial locking and circumferential anti-rotation, forming a double insurance, fundamentally eliminating the axial movement and circumferential micro-movement of the cutter head during high-speed operation, ensuring the ultimate stability and precision of the slitting process. The working gap is directly determined by the connection of the convex rings on the end face of the cutter head, eliminating a large number of independent spacers. This not only simplifies the cutter assembly structure and reduces management and inventory costs, but also avoids the problem of inaccurate positioning caused by spacer wear or assembly errors. The key bar and the triangular groove are rigidly fixed by bolts, and the cooperation with the keyway of the cutter head can achieve zero-gap or micro-gap transmission, reducing the impact and vibration during start-up, stopping and shearing, and effectively extending the service life of the cutter and cutter shaft. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the automatic locking longitudinal scissors of this utility model;

[0014] Figure 2 This is an exploded view of the automatic locking type longitudinal shears of this utility model;

[0015] Figure 3 This is a sectional view of the automatic locking longitudinal shear of this utility model;

[0016] Figure 4 This is an enlarged view of section A of this utility model.

[0017] In the diagram: 1. Cutter head; 11. Shaft hole; 111. Keyway; 12. Mounting hole; 13. Elastic locking element; 131. Positioning pin; 132. Support spring; 133. Limiting plate; 14. Convex ring; 2. Cutter shaft; 21. Triangular groove; 22. Bolt hole; 3. Key bar; 31. Mounting bar; 32. Center elongated hole; 33. Locking hole; 34. Tapered surface. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0020] Combination Figures 1-4 The present invention relates to an automatic locking type longitudinal shear, comprising a cutter disc 1, a cutter shaft 2, and a key bar 3. The cutter shaft 2 has a triangular groove 21, and the key bar 3 is installed in the triangular groove 21. The cutter shaft 2 is sleeved with the cutter disc 1, and the cutter disc 1 and the key bar 3 are locked and fixed.

[0021] Specifically, the key bar 3 is provided with a mounting strip 31 that matches the triangular groove 21. The mounting strip 31 is inserted from one end of the triangular groove 21. Bolt holes 22 are provided on both sides of the triangular groove 21. The mounting strip 31 can be fixed in position by bolts passing through the bolt holes 22, thereby fixing the position of the key bar 3. A central elongated hole 32 is provided in the center of the key bar 3. One end of the central elongated hole 32 is an open structure, and the other end of the central elongated hole 32 is a closed structure. A tapered surface 34 is provided at the end of the key bar 3 near the closed structure. The tapered surface 34 is used for mounting the cutter shaft 2. The open structure of the central elongated hole 32 is used for inserting an unlocking tool. Locking holes 33 are symmetrically distributed at equal intervals on both sides of the key bar 3. The locking holes 33 are used to fix the position of the cutter head 1.

[0022] More specifically, the center of the cutter head 1 has a shaft hole 11, and a keyway 111 is provided on the shaft hole 11. The keyway 111 engages with the key bar 3, and mounting holes 12 are symmetrically provided on both sides of the keyway 111. An elastic locking member 13 is provided in the mounting hole 12, and the elastic locking member 13 is locked and fixed with the locking hole 33.

[0023] It should be understood that the elastic locking component 13 includes a positioning post 131, a support spring 132, and a limiting plate 133. One end of the positioning post 131 extends out of the mounting hole 12. The end of the positioning post 131 placed inside the mounting hole 12 is provided with a limiting plate 133. The limiting plate 133 moves within the mounting hole 12, and a support spring 132 is provided on one side of the limiting plate 133. Under the action of the support spring 132, the positioning post 131 is pushed out and enters the locking hole 33. After the positioning post 131 is inserted from the locking hole 33, it extends into the central elongated hole 32. After the unlocking tool is inserted into the central elongated hole 32, it can push the positioning post 131, compressing the support spring 132, thereby pushing out the positioning post 131 and separating the cutter head 1 from the cutter shaft 2.

[0024] In addition, a convex ring 14 is provided near the shaft hole 11 of the cutter head 1. After multiple cutter heads 1 are installed, the convex rings 14 are connected to limit the working gap of the cutter head 1.

[0025] Working process: Insert the key bar 3 through the mounting strip 31 from one end of the triangular groove 21 of the cutter shaft 2, and use bolts to fasten the key bar 3 through the bolt holes 22 on the cutter shaft 2, ensuring that the key bar 3 is firmly fixed on the cutter shaft 2. Then, align the shaft hole 11 of the cutter disc 1 with the cutter shaft 2, and align the keyway 111 of the inner hole of the cutter disc 1 with the key bar 3 on the cutter shaft 2. Push the cutter disc 1 along the key bar 3. The tapered surface 34 at the front end of the key bar 3 facilitates the insertion of the cutter disc 1. The elastic locking element 13 is pushed to a retracted state by the tapered surface 34. When the cutter disc 1 is pushed to the preset position, the elastic locking element 13 in its mounting hole 12 automatically pops out and locks into the corresponding locking hole 33 on the key bar 3. At this time, a clear "click" sound can be heard, indicating that the installation is in place. Multiple cutter discs 1 are installed in sequence, and the convex rings 14 on their end faces contact each other, jointly determining the distance between the cutter discs 1. The working gap replaces the function of the traditional spacer. In the locked state, the cutter head 1 achieves circumferential transmission through the keyway 111 and the key bar 3, transmitting torque without gap. At the same time, the positioning pin 131 penetrates into the locking hole 33 and extends into the central elongated hole 32 of the key bar 3, locking the cutter head 1 and the key bar 3 together in both axial and circumferential directions, effectively preventing any movement in any direction. When it is necessary to replace or adjust the cutter head 1, a special unlocking tool is inserted from the opening of the central elongated hole 32 at the end of the key bar 3. The unlocking tool is pushed inward, which will simultaneously act on the ends of all the positioning pins 131 that are stuck in the central elongated hole 32. Under the action of the tool's thrust, the positioning pins 131 are pushed back into the mounting hole 12, compressing the support spring 132, causing its front end to exit from the locking hole 33, thereby unlocking. The cutter head 1 can then be easily removed along the cutter shaft 2.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An automatic locking type longitudinal shear, comprising a cutter disc (1), a cutter shaft (2), and a key bar (3), characterized in that, A triangular groove (21) is provided on the cutter shaft (2), and the key bar (3) is installed in the triangular groove (21). The cutter disc (1) is fitted onto the cutter shaft (2) through the central shaft hole (11). Several locking holes (33) are provided on the side of the key bar (3) along its length. A keyway (111) that matches the key bar (3) is provided on the inner wall of the shaft hole (11). An installation hole (12) is provided on the inner wall of the keyway (111), and an elastic locking element (13) is provided in the installation hole (12).

2. The automatic locking type longitudinal scissor as described in claim 1, characterized in that, The key bar (3) has a central elongated hole (32) along its length. One end of the central elongated hole (32) is an open end for inserting an unlocking tool, and the other end is a sealed end.

3. The automatic locking type longitudinal scissor cutter according to claim 2, characterized in that, The key bar (3) has a tapered surface (34) for guiding installation at one end near the sealing end.

4. The automatic locking type longitudinal scissor according to claim 1, characterized in that, The elastic locking member (13) includes a positioning post (131), a support spring (132), and a limiting plate (133). The positioning post (131) is movably disposed in the mounting hole (12), the limiting plate (133) is fixed to one end of the positioning post (131) located in the mounting hole (12), and the support spring (132) abuts against the inner bottom surface of the limiting plate (133) and the mounting hole (12).

5. The automatic locking type longitudinal scissor as described in claim 1, characterized in that, The key bar (3) is inserted into the triangular groove (21) of the cutter shaft (2) through the mounting strip (31) at its bottom, and is fixed by a bolt that passes through the side wall of the cutter shaft (2) and is screwed into the mounting strip (31).

6. The automatic locking type longitudinal scissor as described in claim 1, characterized in that, The cutter head (1) has an annular protrusion (14) on its end face near the shaft hole (11).

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