Cutting edge grinding device for pliers tools

Abstract

The utility model relates to the technical field of clamp machining, in particular to a clamp tool cutting edge polishing device which comprises a working table, a rotating table is arranged on the working table, a rotating motor is arranged in cooperation with the rotating table, a plurality of fixing seats are evenly arranged on the side wall of the working table, and fixing grooves are formed in the fixing seats. First electric push rods are arranged at the top end and the side wall of the fixing groove correspondingly, clamping blocks are arranged at the output ends of the first electric push rods, a clamp is installed in the fixing groove through the clamping blocks, a mounting frame matched with the clamp is arranged on the outer side of the workbench, a telescopic frame is arranged on the mounting frame through cooperation of a shaft and a bearing, and an adjusting motor matched with the telescopic frame is arranged. A second electric push rod is arranged on the telescopic frame, a grinding assembly is arranged at the output end of the second electric push rod, and an XYZ three-axis adjusting mechanism is arranged above the mounting frame. The clamp cutting edge grinding device has the beneficial effects that the grinding efficiency during grinding of the clamp cutting edge can be improved through the matching of the structure, and the grinding flexibility and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of pliers tools, specifically a pliers tool edge sharpening device. Background Technology

[0002] Pliers are a common type of hand tool, primarily used for gripping, cutting, bending, or twisting materials such as metal and wire. Their structure typically includes a pair of opening and closing jaws, a hinged joint, and a handle, utilizing leverage to enhance operating force. Common types include needle-nose pliers, wire cutters, diagonal pliers, and vise pliers, widely used in electrical work, mechanical repair, construction, and household chores, characterized by their durability and ease of use.

[0003] Sharpening the cutting edges of pliers is a crucial step in ensuring their sharpness and durability. However, current sharpening methods are still primarily manual, resulting in low efficiency and insufficient standardization. There are currently two main sharpening methods: one is for the worker to hold the pliers handle and bring the cutting edge into contact with a rotating sharpening head, manually adjusting the angle to complete the sharpening; the other is to fix the pliers on a workbench and have the worker use a hand-held sharpening machine to process the cutting edge.

[0004] Both methods require manual intervention throughout the entire process, including feeding, angle adjustment, grinding, and unloading, resulting in low production efficiency and high skill requirements for operators. Because they rely on worker experience, the grinding quality may vary between different batches, making standardized production difficult.

[0005] Furthermore, prolonged operation can lead to worker fatigue, further affecting grinding accuracy and stability. It can even cause excessive wear or angular deviation of the cutting edge due to operational errors, reducing the performance of the tool. Therefore, existing manual grinding methods are insufficient to meet the needs of high-quality, high-volume production and urgently require improvement. Utility Model Content

[0006] The purpose of this invention is to provide a tool for sharpening the cutting edge of pliers, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tool edge sharpening device for pliers, comprising a worktable, a rotating platform mounted on the worktable via a shaft and bearing, a rotating motor mounted at the bottom of the worktable in conjunction with the rotating platform, multiple fixed seats evenly arranged on the side wall of the worktable, each fixed seat having a fixed groove, a first electric push rod mounted on the top and side wall of the fixed groove, a clamping block mounted at the output end of the first electric push rod, a pliers mounted in the fixed groove via the clamping block, a mounting frame mounted on the outside of the worktable in conjunction with the pliers, a telescopic frame mounted on the mounting frame via a shaft and bearing, an adjusting motor mounted in conjunction with the telescopic frame, a second electric push rod mounted on the telescopic frame, a sharpening component mounted at the output end of the second electric push rod, and an XYZ three-axis adjusting mechanism mounted above the mounting frame.

[0008] The present invention is further configured such that the grinding assembly includes a grinding motor, the output end of the second electric push rod is provided with a mounting base, the grinding motor is mounted on the mounting base, and the output end of the grinding motor is provided with a grinding head. When the grinding motor is started, the rotation of the grinding head can be controlled by the grinding motor, thereby realizing flexible grinding of the cutting edge of the pliers by the grinding head.

[0009] The present invention is further configured such that the XYZ three-axis adjustment mechanism includes an X-axis adjustment component, a Y-axis adjustment component and a Z-axis adjustment component, and the three axes work together to flexibly adjust the grinding position of the grinding head in the grinding component.

[0010] The present invention is further configured such that the X-axis adjustment assembly includes a first ball screw, which is arranged along the X-axis driving direction. The first ball screw is equipped with a first screw nut and a first screw motor. The Y-axis adjustment assembly is arranged on the first screw nut. When the first screw motor is started, the operation of the first ball screw can be controlled by the first screw motor, so that the first screw nut can control the Y-axis adjustment assembly to achieve movement adjustment in the X-axis direction, thereby realizing the movement adjustment of the grinding assembly in the X-axis grinding position and direction. Here, the first ball screw can be hoisted and fixed by a frame structure. How to achieve installation by a frame is existing technology and will not be described in detail in this invention.

[0011] The present invention is further configured such that the Y-axis adjustment assembly includes a second ball screw, the second ball screw is arranged along the Y-axis driving direction, a second screw nut and a second screw motor are fitted on the second ball screw, and the Z-axis adjustment assembly is located at the bottom end of the second screw nut. Starting the second screw motor controls the operation of the second ball screw, causing the second screw nut to control the electric cylinder to move in the Y-axis direction, thereby controlling the grinding head to move in the Y-axis direction during grinding.

[0012] The present invention is further configured such that the Z-axis adjustment component includes an electric cylinder, the top end of which is mounted on a second lead screw nut and the bottom end is connected to the mounting frame. When the electric cylinder is activated, the lifting and lowering movement of the mounting frame can be controlled by the electric cylinder, thereby realizing the lifting and lowering adjustment of the grinding component located on the mounting frame in the Z-axis direction during grinding.

[0013] The present invention is further provided that the side of the fixed base is provided with a mounting ear, and a fixing bolt is provided between the mounting ear and the rotating table. The fixed base can be detachably installed on the side of the rotating table by the cooperation of the mounting ear and the fixing bolt, thereby facilitating the installation, disassembly and replacement of the fixed base.

[0014] The present invention is further configured such that a top plate is provided at the top of the fixed base, the first electric push rod is provided on the top plate, and a locking bolt is provided between the top plate and other parts of the fixed base. The cooperation between the top plate and the locking bolt allows the fixed slot to be easily opened when the internal components of the fixed base are damaged, thereby facilitating the replacement of internal components such as the first electric push rod and the clamping block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model significantly improves the production efficiency of tool edge grinding by setting a rotatable rotating table and multi-station fixed seats. Traditional manual grinding requires loading, positioning, grinding, and unloading each tool individually, which is time-consuming and labor-intensive. This device uses a rotating table to drive multiple fixed seats in a cyclical operation, allowing loading, grinding, inspection, and unloading processes to be performed simultaneously, forming a continuous production line. During grinding, the XYZ three-axis adjustment mechanism, in conjunction with the telescopic frame and the second electric push rod, can quickly adjust the spatial position and angle of the grinding head, reducing manual intervention time. Furthermore, by controlling the coordinated actions of the rotating motor, adjusting motor, and the first and second electric push rods through a preset program, precise and automated grinding is achieved, avoiding the pauses and waiting times of traditional manual operation, improving overall efficiency, and is particularly suitable for the standardized mass production needs of tool edge grinding.

[0017] 2. Traditional manual grinding relies on operator experience, which can easily lead to uneven cutting edge angles and sharpness due to fatigue or skill differences. This invention effectively solves this problem through mechanical automation control. The XYZ three-axis adjustment mechanism uses ball screws and electric cylinders for high positioning accuracy, ensuring that the grinding head always runs along the preset trajectory. The telescopic frame and adjusting motor can dynamically adjust the grinding angle to adapt to the tilting requirements of different clamp cutting edges. At the same time, the fixed base clamps the clamps through a multi-directional electric push rod and a clamping block, avoiding displacement deviations during grinding and improving the stability of the clamp cutting edge during grinding.

[0018] 3. The mounting base, grinding assembly, and adjustment mechanism in this utility model all adopt a modular design, facilitating quick replacement or maintenance. The mounting base is connected to the rotary table via mounting ears and bolts, allowing for the replacement of specialized clamps for different types of pliers, such as needle-nose pliers and diagonal pliers. The design of the top plate and locking bolts eliminates the need to disassemble the entire structure for maintenance of the internal first electric push rod and clamping block. Furthermore, the XYZ three-axis adjustment mechanism is independent of the grinding assembly, allowing users to select ball screws or electric cylinders with different strokes to expand the processing range. This modular design not only reduces equipment maintenance costs but also improves production line adaptability, flexibly handling multi-variety, small-batch production tasks and extending equipment lifespan. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a pliers-type tool edge sharpening device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the mating structure between the grinding head and the cutting edge of the pliers in this utility model;

[0021] Figure 3 This is a schematic diagram of the overall installation structure of the grinding head in this utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the grinding head on the mounting bracket in this utility model;

[0023] Figure 5 This is a schematic diagram of the cooperation structure between the fixed base and the clamping block in this utility model.

[0024] The components represented by each number in the attached diagram are listed below: 1. Worktable; 2. Rotary table; 3. Rotary motor; 4. Fixed base; 5. Fixed groove; 6. First electric push rod; 7. Clamping block; 8. Pliers; 9. Mounting bracket; 10. Telescopic bracket; 11. Adjusting motor; 12. Second electric push rod; 13. Grinding motor; 14. Mounting base; 15. Grinding head; 16. First ball screw; 17. First screw nut; 18. First screw motor; 19. Second ball screw; 20. Second screw nut; 21. Second screw motor; 22. Electric cylinder; 23. Mounting lug; 24. Fixing bolt; 25. Top plate; 26. Locking bolt. Detailed Implementation

[0025] 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.

[0026] This utility model provides a technical solution: such as Figures 1-5 The device shown is a tool edge sharpening device for pliers, including a worktable 1. A rotating table 2 is mounted on the worktable 1 via a shaft and bearing. A rotating motor 3 is mounted on the bottom of the worktable 1 in conjunction with the rotating table 2. Multiple fixed seats 4 are evenly arranged on the side wall of the worktable 1. Fixed slots 5 are formed on the fixed seats 4. First electric push rods 6 are mounted on the top and side wall of the fixed slots 5. A clamping block 7 is mounted on the output end of the first electric push rod 6. A plier 8 is mounted in the fixed slots 5 via the clamping block 7. A mounting frame 9 is mounted on the outside of the worktable 1 in conjunction with the plier 8. A telescopic frame 10 is mounted on the mounting frame 9 via a shaft and bearing. An adjusting motor 11 is mounted in conjunction with the telescopic frame 10. A second electric push rod 12 is mounted on the telescopic frame 10. A sharpening component is mounted on the output end of the second electric push rod 12. An XYZ three-axis adjustment mechanism is mounted above the mounting frame 9.

[0027] Please see Figures 1-5 As one implementation of the grinding assembly: the grinding assembly includes a grinding motor 13, the output end of the second electric push rod 12 is provided with a mounting base 14, the grinding motor 13 is mounted on the mounting base 14, and the output end of the grinding motor 13 is provided with a grinding head 15. When the grinding motor 13 is started, the rotation of the grinding head 15 can be controlled by the grinding motor 13, thereby realizing the flexible grinding of the grinding head 15 on the cutting edge position of the clamp 8.

[0028] Please see Figures 1-5 As one implementation of the XYZ three-axis adjustment mechanism: The XYZ three-axis adjustment mechanism includes an X-axis adjustment component, a Y-axis adjustment component and a Z-axis adjustment component, and the three axes work together to flexibly adjust the grinding position of the grinding head 15 in the grinding component.

[0029] The X-axis adjustment assembly includes a first ball screw 16, which is arranged along the X-axis driving direction. The first ball screw 16 is equipped with a first screw nut 17 and a first screw motor 18. The Y-axis adjustment assembly is mounted on the first screw nut 17. When the first screw motor 18 is started, the operation of the first ball screw 16 can be controlled by the first screw motor 18, so that the first screw nut 17 can control the Y-axis adjustment assembly to achieve movement adjustment in the X-axis direction, thereby realizing the movement adjustment of the grinding assembly in the X-axis grinding position and direction.

[0030] The Y-axis adjustment assembly includes a second ball screw 19, which is set along the Y-axis drive direction. A second screw nut 20 and a second screw motor 21 are fitted on the second ball screw 19. The Z-axis adjustment assembly is located at the bottom of the second screw nut 20. When the second screw motor 21 is started, the operation of the second ball screw 19 is controlled, so that the second screw nut 20 controls the electric cylinder 22 to achieve movement drive in the Y-axis direction, thereby controlling the grinding head 15 to achieve grinding movement in the Y-axis direction during grinding.

[0031] The Z-axis adjustment assembly includes an electric cylinder 22. The top end of the electric cylinder 22 is mounted on the second lead screw nut 20, and the bottom end is connected to the mounting frame 9. Activating the electric cylinder 22 controls the lifting and lowering movement of the mounting frame 9, thereby allowing the grinding assembly with the wire located on the mounting frame 9 to be adjusted in the Z-axis direction during grinding.

[0032] Please see Figures 1-5 As one embodiment of the fixed base 4: the fixed base 4 is provided with a mounting ear 23 on its side, and a fixing bolt 24 is provided between the mounting ear 23 and the rotating table 2. The fixed base 4 can be detachably installed on the side of the rotating table 2 through the cooperation of the mounting ear 23 and the fixing bolt 24, thereby facilitating the installation, disassembly and replacement of the fixed base 4.

[0033] Please see Figures 1-5 As one embodiment of the fixed base 4: a top plate 25 is provided at the top of the fixed base 4, and a first electric push rod 6 is provided on the top plate 25. A locking bolt 26 is provided between the top plate 25 and other parts of the fixed base 4. The cooperation between the top plate 25 and the locking bolt 26 allows the fixing groove 5 to be easily opened when the internal components of the fixed base 4 are damaged, thereby facilitating the replacement of internal components such as the first electric push rod 6 and the clamping block.

[0034] In summary, the specific workflow and working principle of this utility model are as follows:

[0035] When in use, this utility model allows the handle end of the pliers 8 to be ground to be inserted into the fixing groove 5 by an external robotic arm.

[0036] Then, the first electric push rod 6 is activated, and the movement of the clamping block 7 is controlled by the first electric push rod 6. Through the coordinated action of the top and side clamping blocks 7, the handle of the clamp 8 is locked and fixed in the fixing groove 5, wherein the bottom of the handle of the clamp 8 is in contact with the bottom end of the fixing groove 5 to achieve load bearing.

[0037] During grinding, the rotating table 2 is controlled by rotating motor 3, and the fixed seat 4 is rotated by rotating table 2, thereby realizing the rotation and conveying of clamp 8, so that clamp 8 stops rotating when it is conveyed to the set grinding position;

[0038] Then, the grinding position of the grinding head 15 in the grinding assembly can be flexibly adjusted by the XYZ three-axis adjustment mechanism. Here, a locator can be set on the mounting base 14 in conjunction with the grinding head 15 for positioning the grinding head 15 during grinding. The combined use of the locator is a mature existing technology, and this utility model will not elaborate on it.

[0039] During this process, the telescopic frame 10 is rotated by adjusting the motor 11, which in turn drives the second electric push rod 12 to rotate. The rotation of the second electric push rod 12 drives the rotation of the grinding assembly, thereby adjusting the grinding angle of the grinding head 15. This allows the grinding head 15 to better fit the angle of the cutting edge of the clamp 8, improving the grinding effect.

[0040] During the grinding process, the grinding motor 13 is started, and the rotation of the grinding head 15 can be controlled by the grinding motor 13 to achieve grinding of the cutting edge position of the clamp 8;

[0041] Meanwhile, during the grinding process, the extension and retraction of the second electric push rod 12 can be controlled to adjust the grinding depth of the grinding head 15;

[0042] In this invention, the horizontal direction of the grinding of the cutting edge of the pliers 8 is parallel to the X-axis driving direction during grinding. Thus, during the grinding process, the grinding position of the cutting edge can be flexibly adjusted laterally through the X-axis adjustment component, so as to achieve full and standardized grinding of the cutting edge of the pliers 8.

[0043] After the grinding is completed, control the grinding head 15 to leave the clamp 8, and continue to control the rotating table 2 to rotate so that the next set of installed clamps 8 can move to the grinding position and carry out the next round of grinding.

[0044] Preferably, at least four sets of fixed seats 4 are provided on the rotating table 2. In this way, along the processing direction, each set of fixed seats 4 can correspond to the loading-grinding-inspection-unloading procedure in the prior art, thereby avoiding waiting between production steps and improving the efficiency of the clamp 8 during grinding. Other parts of the loading, inspection and unloading procedures mentioned above that are not detailed are implemented using the prior art.

[0045] This utility model sets up a telescopic frame 10, which is rotatably mounted on the mounting frame 9 via a bearing structure. In this way, the grinding angle can be flexibly adjusted according to the different inclination angles of the cutting edge of the pliers 8, so as to achieve fully and accurately grinding of the cutting edge position of the pliers 8.

[0046] If the present invention relates to the dust removal and cooling functions of the clamp 8 during grinding, the existing technology can be used. The existing technology has been maturely applied to the relevant dust removal, chip collection and cooling functions during workpiece grinding. Other parts not described in detail are implemented using the existing technology.

[0047] In this utility model, since the first electric push rod 6 is installed on the rotating table 2 and rotates relative to the worktable 1 through the rotating table 2, during installation, conductive slip rings and other related components can be used to connect the circuit. The conductive slip ring is also called a current collector ring, or a slip ring, current collector ring, or current collector ring. It can be used in any electromechanical system that requires continuous rotation while transmitting power and signals from a fixed position to a rotating position. The slip ring can improve system performance, simplify system structure, and avoid twisting of wires during rotation. Its specific application and connection structure are existing technologies, which should be known to those skilled in the art. Other parts not described in detail are implemented using existing technologies.

[0048] In this utility model, the controller can control the relevant motors, electric push rods and other electrical components to operate according to the set program to complete the grinding operation at the 8 cutting edges of the pliers. The specific working process and working principle of this utility model have been described in detail. Based on the above working process and working principle, those skilled in the art should know its specific circuit connection structure. The circuit connection structure between the relevant electrical components and the controller and the specific driver program are not within the scope of protection of this utility model. Other parts not described in detail are implemented using existing technology.

[0049] 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.

[0050] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for sharpening the blade of a tongs-type tool, comprising a worktable (1), characterized in that: The workbench (1) is provided with a rotating table (2) through the cooperation of shaft and bearing, the bottom end of the workbench (1) is provided with a rotating motor (3) matched with the rotating table (2), the sidewall of the workbench (1) is uniformly provided with a plurality of fixing seats (4), the fixing seat (4) is provided with a fixing groove (5), the top end and the sidewall of the fixing groove (5) are provided with a first electric push rod (6), the output end of the first electric push rod (6) is provided with a clamping block (7), the fixing groove (5) is provided with a clamp (8) through the clamping block (7), the outside of the workbench (1) is provided with a mounting frame (9) matched with the clamp (8), the mounting frame (9) is provided with a telescopic frame (10) through the cooperation of shaft and bearing, and is provided with an adjusting motor (11) matched with the telescopic frame (10), the telescopic frame (10) is provided with a second electric push rod (12), the output end of the second electric push rod (12) is provided with a polishing assembly, and the top of the mounting frame (9) is provided with an XYZ three-axis adjusting mechanism.

2. The device of claim 1, wherein: The polishing assembly comprises a polishing motor (13), the output end of the second electric push rod (12) is provided with a mounting seat (14), the polishing motor (13) is arranged on the mounting seat (14), and the output end of the polishing motor (13) is provided with a polishing head (15).

3. The device of claim 1, wherein: The XYZ three-axis adjusting mechanism comprises an X-axis adjusting assembly, a Y-axis adjusting assembly and a Z-axis adjusting assembly.

4. The device of claim 3, wherein: The X-axis adjusting assembly comprises a first ball screw (16), the first ball screw (16) is arranged along the X-axis driving direction, the first ball screw (16) is provided with a first screw nut (17) and a first screw motor (18), and the Y-axis adjusting assembly is arranged on the first screw nut (17).

5. A device for sharpening the cutting edge of a tool of the tongs type according to claim 4, characterized in that: The Y-axis adjusting assembly comprises a second ball screw (19), the second ball screw (19) is arranged along the Y-axis driving direction, the second ball screw (19) is provided with a second screw nut (20) and a second screw motor (21) matched with the second ball screw (19), and the Z-axis adjusting assembly is arranged at the bottom end of the second screw nut (20).

6. A device for sharpening the cutting edge of a tool of the tongs type according to claim 5, characterized in that: The Z-axis adjusting assembly comprises an electric cylinder (22), the top end of the electric cylinder (22) is mounted on the second screw nut (20), and the bottom end is connected with the mounting frame (9).

7. The device of claim 1, wherein: The side of the fixing seat (4) is provided with a mounting lug (23), and the mounting lug (23) and the rotating table (2) are provided with a fixing bolt (24).

8. The device of claim 1, wherein: The top end of the fixing seat (4) is provided with a top plate (25), and the first electric push rod (6) is arranged on the top plate (25), and the top plate (25) and the other parts of the fixing seat (4) are provided with a locking bolt (26).

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