Scissor positioning structure and tool sharpener thereof

Abstract

The utility model relates to the technical field of tool sharpeners, and discloses a scissor positioning structure and a tool sharpener thereof, the scissor positioning structure comprises a clamping table, two groups of guide rails are vertically arranged on the clamping table, and adjusting seats are arranged on the guide rails; the limiting assembly comprises a first fixing rod, a hook, a second clamping rod and an extrusion block, the first fixing rod is fixedly installed on the vertical plate, the hook is fixedly connected with the first fixing rod, the second clamping rod is fixedly connected with the vertical plate, and the extrusion block can be close to the second clamping rod to clamp and fix the scissor handle. The other shear handle is pulled to be located between the second clamping rod and the extrusion block, the adjustment screw rod is rotated to push the extrusion block and drive the limiting rod to slide in the limiting hole, then separation or closing of the extrusion block and the second clamping rod is achieved, and clamping and fixing of the other shear handle are achieved. The two scissor mouths of the scissors can be kept in a stable separation state, and the scissor mouths cannot be closed due to polishing vibration.

Description

Technical Field

[0001] This utility model relates to the field of knife sharpening machine technology, and in particular to a scissor positioning structure and a knife sharpening machine thereof. Background Technology

[0002] The earliest term for a knife grinding machine was end face grinding machine. The main types include fully automatic knife grinding machines, precision knife grinding machines, and CNC knife grinding machines.

[0003] The prior art discloses an auxiliary device for facilitating the positioning of scissors in a knife grinding machine (publication number: CN118559519A), which includes a connecting plate and a fixing component. The fixing component is disposed on the top of the connecting plate. The fixing component includes a fixing plate, which is fixedly connected to the top of the connecting plate. A connecting block is fixedly connected to the top of the fixing plate, and a groove is formed on the top of the connecting block.

[0004] In existing technologies, the scissor handles are mainly held and fixed by two baffles that can be brought close together. However, vibrations are generated during the grinding process. If only one scissor handle is held, the two scissor handles will come close together during the grinding process, causing the scissor blades to close and thus affecting the grinding accuracy. Therefore, holding only one scissor handle cannot simultaneously achieve both grinding convenience and clamping stability. There is room for optimization in the clamping method of the scissors.

[0005] Therefore, we propose a scissor positioning structure and its sharpening machine. Utility Model Content

[0006] The present invention mainly addresses the technical problem that the scissor handle is prone to closing due to vibration after being clamped, and provides a scissor positioning structure and its sharpening machine.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a scissor positioning structure and its sharpening machine, comprising:

[0008] The clamping table has two sets of guide rails vertically mounted on its upper part. An adjustment seat is mounted on the guide rails. A vertical plate is fixedly mounted on the top surface of the adjustment seat. A push cylinder for pushing the clamping table up and down is provided at the bottom of the clamping table. A pair of scissors to be processed is provided on one side of the vertical plate.

[0009] A limiting component is provided on one side of the upright plate for fixing the scissor handle. The limiting component includes a first fixing rod, a hook, a second clamping rod, and a pressing block. The first fixing rod is fixedly installed on the upright plate, the hook is fixedly connected to the first fixing rod, the second clamping rod is fixedly connected to the upright plate, the pressing block can clamp and fix the scissor handle near the second clamping rod, and the hook can limit the other scissor handle.

[0010] In a preferred embodiment of this utility model, both the first fixing rod and the hook are rectangular prisms, and the hook is fixedly installed on one side of the first fixing rod. The first fixing rod and the hook together form a rod with an L-shaped horizontal cross section.

[0011] In a preferred embodiment of this utility model, the second clamping rod and the first fixing rod are arranged parallel to each other, and the squeezing block has a clamping groove for clamping on the side near the second clamping rod.

[0012] In a preferred embodiment of this utility model, the limiting component further includes an extension rod, which is fixedly connected to the first fixed rod and can support the shear shaft of the scissors.

[0013] In a preferred embodiment of this utility model, the extension rod is fixedly installed on the top surface of the extension rod, the extension rod extends obliquely upward towards the first fixed rod, a ball socket is provided on one side of the extension rod, the shear shaft can fall into the ball socket, and the extension rod is flush with the first fixed rod.

[0014] In a preferred embodiment of this utility model, the limiting component further includes a limiting rod and an adjusting screw. The extrusion block has a threaded hole. The adjusting screw is threadedly connected to the threaded hole and rotatably connected to the second clamping rod. The second clamping rod has a limiting hole. The limiting rod is slidably connected to the limiting hole and fixedly connected to the extrusion block.

[0015] A knife sharpening machine includes a machine base, on which a grinding motor is fixedly mounted. A grinding wheel is fixedly mounted on the output shaft of the grinding motor. The machine base is provided with all the aforementioned scissor positioning structures. A push cylinder is fixedly mounted at the bottom of the machine base and pushes the clamping table to rise and fall vertically.

[0016] Beneficial effects

[0017] This utility model provides a scissor positioning structure and a scissor sharpening machine thereof. It has the following beneficial effects:

[0018] 1. This scissor positioning structure and its sharpening machine, by hanging the scissor handle on a hook, pulling the other scissor handle so that it is positioned between the second clamping rod and the extrusion block, and by rotating the adjusting screw, the adjusting screw pushes the extrusion block and drives the limiting rod to slide within the limiting hole, thereby separating or closing the extrusion block from the second clamping rod, and clamping and fixing the other scissor handle. This clamping and limiting method ensures that both scissor handles are fixed, making them less prone to displacement during sharpening and thus improving sharpening accuracy. At the same time, during the sharpening process, the two scissor blades can maintain a stable separated state and will not close due to sharpening vibration. By adjusting the position of the second clamping rod and the extrusion block clamping the scissor handle, the opening size of the scissors can be adjusted, and the adaptability of the clamping can also be improved.

[0019] 2. This scissor positioning structure and its sharpening machine, by setting an extension rod, inserts the scissor shaft end into the ball socket, and in conjunction with limiting the positions of the two scissor handles, the scissors form a three-point clamping limit, which can ensure that the scissors will not deviate during the sharpening process, and further improve the stability of the sharpening process. Attached Figure Description

[0020] Figure 1 This is one of the overall perspective views of this utility model;

[0021] Figure 2 This is the second overall perspective view of the present utility model;

[0022] Figure 3 This is one of the perspective views of the limiting component of this utility model;

[0023] Figure 4 This is the second perspective view of the limiting component of this utility model;

[0024] Figure 5 This is an assembly drawing of the extrusion block and the second clamping rod of this utility model.

[0025] Legend: 10. Clamping platform; 11. Guide rail; 12. Adjusting seat; 13. Push cylinder; 14. Vertical plate; 20. First fixing rod; 21. Hook; 22. Extension rod; 23. Second clamping rod; 24. Extrusion block; 30. Limiting rod; 31. Adjusting screw. Detailed Implementation

[0026] A scissor positioning structure and its sharpening machine, such as Figure 1 and Figure 2 As shown, it includes:

[0027] A clamping table 10 has two sets of guide rails 11 vertically mounted on its upper surface. Adjustment seats 12 are mounted on the guide rails 11, and a vertical plate 14 is fixedly installed on the top surface of the adjustment seats 12. A push cylinder 13 for raising and lowering the clamping table 10 is located at the bottom of the clamping table 10. A pair of shears to be processed is located on one side of the vertical plate 14. Specifically, the output shaft of the push cylinder 13 is fixedly connected to the bottom surface of the clamping table 10. A sliding groove is formed on the top surface of the guide rails 11, and a slider slides within the groove. The lower set of guide rails 11 is fixedly connected to the top surface of the clamping table 10, and the upper set of guide rails 11 is fixedly connected to the slider. The adjustment seat 12 is fixedly mounted on the slider of a set of upper guide rails 11. One of the guide rails 11 in the same set can be fixedly mounted on a servo motor. The output shaft of the servo motor is fixedly mounted with a lead screw, which is threadedly connected to the slider. The two sets of vertically distributed guide rails 11 realize the two-axis push of the adjustment seat 12. In conjunction with the push cylinder 13, the clamping table 10 is pushed up and down, so that the adjustment seat 12 can move in multiple directions to meet the needs of scissor sharpening. It is better for sharpening the scissor blade and can reduce the sharpening dead angle. The servo motor needs to be connected to a controller for use, which will not be described in detail here.

[0028] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a limiting assembly is installed on one side of the upright plate 14 to fix the scissor handle. The limiting assembly includes a first fixing rod 20, a hook 21, a second clamping rod 23, and a pressing block 24. The first fixing rod 20 is fixedly installed on the upright plate 14, the hook 21 is fixedly connected to the first fixing rod 20, and the second clamping rod 23 is fixedly connected to the upright plate 14. The pressing block 24 can clamp and fix the scissor handle close to the second clamping rod 23. The hook 21 can limit the other scissor handle. The first fixing rod 20 and the hook 21 are both rectangular prisms. The hook 21 is fixedly installed on the first fixing rod. On one side of 20, the first fixing rod 20 and the hook 21 together form a horizontal L-shaped rod. The second clamping rod 23 is arranged parallel to the first fixing rod 20. The extrusion block 24 has a clamping groove for clamping on the side near the second clamping rod 23. The limiting assembly also includes a limiting rod 30 and an adjusting screw 31. The extrusion block 24 has a threaded hole. The adjusting screw 31 is threaded to the threaded hole and rotatably connected to the second clamping rod 23. The second clamping rod 23 has a limiting hole. The limiting rod 30 is slidably connected to the limiting hole and fixedly connected to the extrusion block 24.

[0029] In this solution, the two handles of the scissors are separated, resulting in the two cutting edges of the scissors being in a separate state. This solution also clamps and fixes the scissors in the separated handle state. By hanging one handle on the hook 21, pulling the other handle so that it is positioned between the second clamping rod 23 and the squeezing block 24, and rotating the adjusting screw 31, the adjusting screw 31 pushes the squeezing block 24 and causes the limiting rod 30 to slide within the limiting hole, thereby separating or closing the squeezing block 24 and the second clamping rod 23, thus clamping and fixing the other handle. This clamping and limiting method ensures that both handles of the scissors are fixed, making it less likely to shift during grinding and thus improving grinding accuracy. At the same time, during the grinding process, the two cutting edges of the scissors can remain stably separated and will not close due to grinding vibration. By adjusting the position of the second clamping rod 23 and the squeezing block 24 clamping the handle, the opening size of the scissors can be adjusted, and the adaptability of the clamping can also be improved.

[0030] like Figure 3 As shown, the limiting assembly also includes an extension rod 22, which is fixedly connected to the first fixed rod 20. The extension rod 22 can support the shear shaft of the scissors. The extension rod 22 is fixedly installed on the top surface of the extension rod 22. The extension rod 22 extends obliquely upward toward the first fixed rod 20. A ball socket is provided on one side of the extension rod 22, and the shear shaft can fall into the ball socket. The extension rod 22 is flush with the first fixed rod 20.

[0031] As a supplement to the above solution, by setting an extension rod 22, the shear shaft end of the scissors is inserted into the ball socket, and the two shear handle positions are limited, thus forming a three-point clamping limit for the scissors. This ensures that the scissors will not deviate during the grinding process, further improving the stability of the grinding process.

[0032] Not shown in the figure. A knife sharpening machine includes a machine base, a grinding motor fixedly mounted on the machine base, a grinding wheel fixedly mounted on the output shaft of the grinding motor, all the above-mentioned scissor positioning structures provided on the machine base, and a push cylinder 13 fixedly mounted on the bottom of the machine base and pushing the clamping table 10 to move vertically up and down;

[0033] The grinding motor needs to be connected to a control switch. The grinding motor drives the grinding wheel to grind the scissors. The positioning structure mentioned above ensures that the scissors are ground while still in an open state, making them less likely to close. This results in high clamping stability and allows for control and improvement of grinding accuracy.

[0034] The working principle of this utility model is as follows: Two sets of vertically distributed guide rails 11 are used to push the two axes of the adjusting seat 12, and the push cylinder 13 pushes the clamping table 10 up and down, so that the adjusting seat 12 can move in multiple directions. By hanging the scissor handle on the hook 21, the other scissor handle is pulled so that the scissor handle is located between the second clamping rod 23 and the extrusion block 24. By rotating the adjusting screw 31, the adjusting screw 31 pushes the extrusion block 24 and drives the limiting rod 30 to slide in the limiting hole, thereby realizing the separation or closure of the extrusion block 24 and the second clamping rod 23, realizing the clamping and fixing of the other scissor handle, so that the scissors are kept in the open state. An extension rod 22 is set up. By inserting the scissor shaft end into the ball socket, and in conjunction with limiting the position of the two scissor handles, the scissors form a three-point clamping and limiting position.

[0035] The blade of the scissors is ground by rotating the grinding wheel driven by the grinding motor. The grinding motor needs to be connected to a control switch, and the push cylinder 13 and the servo motor need to be connected to a controller. The specific control method and connection method are known existing technologies and will not be described in detail here.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A scissor positioning structure, characterized in that, include: A clamping table (10) is provided with two sets of guide rails (11) vertically on the upper part of the clamping table (10). An adjusting seat (12) is provided on the guide rails (11). A vertical plate (14) is fixedly installed on the top surface of the adjusting seat (12). A push cylinder (13) for pushing the clamping table (10) up and down is provided at the bottom of the clamping table (10). A pair of scissors to be processed is provided on one side of the vertical plate (14). A limiting component is provided on one side of the upright plate (14) for fixing the scissor handle. The limiting component includes a first fixing rod (20), a hook (21), a second clamping rod (23), and a squeezing block (24). The first fixing rod (20) is fixedly installed on the upright plate (14). The hook (21) is fixedly connected to the first fixing rod (20). The second clamping rod (23) is fixedly connected to the upright plate (14). The squeezing block (24) can clamp and fix the scissor handle close to the second clamping rod (23). The hook (21) can limit the other scissor handle.

2. The scissor positioning structure according to claim 1, characterized in that: The first fixing rod (20) and the hook (21) are both rectangular prisms. The hook (21) is fixedly installed on one side of the first fixing rod (20). The first fixing rod (20) and the hook (21) together form a rod with an L-shaped horizontal cross section.

3. The scissor positioning structure according to claim 1, characterized in that: The second clamping rod (23) and the first fixing rod (20) are arranged parallel to each other, and the squeezing block (24) has a clamping groove for clamping on the side near the second clamping rod (23).

4. The scissor positioning structure according to claim 1, characterized in that: The limiting component also includes an extension rod (22), which is fixedly connected to the first fixing rod (20). The extension rod (22) can support the shear shaft of the scissors.

5. The scissor positioning structure according to claim 4, characterized in that: The extension rod (22) is fixedly installed on the top surface of the extension rod (22). The extension rod (22) extends obliquely upward towards the first fixed rod (20). A ball socket is provided on one side of the extension rod (22), and the shear shaft can fall into the ball socket. The extension rod (22) is flush with the first fixed rod (20).

6. The scissor positioning structure according to claim 1, characterized in that: The limiting assembly also includes a limiting rod (30) and an adjusting screw (31). The extrusion block (24) has a threaded hole. The adjusting screw (31) is threadedly connected to the threaded hole and rotatably connected to the second clamping rod (23). The second clamping rod (23) has a limiting hole. The limiting rod (30) is slidably connected to the limiting hole and fixedly connected to the extrusion block (24).

7. A knife sharpening machine, comprising a machine base, a grinding motor fixedly mounted on the machine base, and a grinding wheel fixedly mounted on the output shaft of the grinding motor, characterized in that: The machine base is provided with a scissor positioning structure as described in any one of claims 1-6, and the push cylinder (13) is fixedly installed at the bottom of the machine base and pushes the clamping table (10) to rise and fall vertically.

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