An automated slot pull device for a tool holder

Abstract

An automated grooving device for a tool pliers includes linearly fixedly arranged grooving dies. The grooving dies include a fixed-tooth die, a single-variable die, and a double-variable die. The single-variable die is located below the fixed-tooth die, and the double-variable die is located below the single-variable die. The cross-sectional shape of the fixed-tooth die remains constant. The cross-sectional height of the single-variable die is constant, but its cross-sectional width gradually narrows along its length. Both the height and width of the double-variable die gradually narrow along its length. Oil nozzles are spaced apart in the middle of the grooving dies. In this invention, the cross-section of the grooving dies is designed with a gradual change. By gradually increasing the feed rate during grooving and cutting the jaws, cutting resistance and cutting chips are reduced. The oil nozzles apply lubricating oil to the jaw teeth during the grooving process, improving the smoothness of grooving and reducing problems such as tooth surface roughness and dulling.

Description

Technical Field

[0001] This invention belongs to the field of tool and pliers technology, specifically referring to an automated grooving device for tool and pliers. Background Technology

[0002] In the manufacturing process of pliers, machining the jaw teeth is one of the key steps. Currently, the conventional method for machining the teeth is to use a grooving process to cut and shape them in one go after forging. The specific operation involves fixing a special die and making the jaws slide back and forth at high speed on the die, using the cutting edge of the die to gradually form the teeth on the jaw surface.

[0003] In the tooth grooving process of tool pliers, the traditional one-cut forming process has obvious technical defects. First, because the tooth shape is formed by cutting with a die in one go, the instantaneous cutting resistance is too large, which can easily lead to the die edge breaking or accelerated wear. At the same time, excessive cutting resistance will cause machining vibration, affecting the stability of the tooth grooving process, and causing problems such as local roughness of the tooth surface, micro-cracks, or even blunting of the tooth tip.

[0004] Another key issue is the difficulty in chip removal. Single-cut forming generates a large amount of chips, but current processes lack effective chip removal channels or intermittent tool retraction designs, resulting in chips not being removed in a timely manner. A large accumulation of metal chips can scratch the machined surface and create pressure between the die and the workpiece, interfering with the stability of the cutting process. Furthermore, to overcome high cutting resistance, the equipment needs to provide stronger clamping force, which places higher demands on the rigidity of the fixture. If the clamping force is insufficient, the workpiece may loosen, affecting machining accuracy and potentially posing safety hazards. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides an automated grooving device for tool pliers, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an automated grooving device for tool pliers, including a toothed cutting die, wherein the toothed cutting dies are linearly and fixedly arranged, and the toothed cutting die includes a fixed tooth cutting die, a single variable cutting die and a double variable cutting die. The single variable cutting die is located at the lower end of the fixed tooth cutting die, and the double variable cutting die is located at the lower end of the single variable cutting die. The height and width of the cross-section of the fixed tooth cutting die remain constant, that is, its cross-sectional shape remains constant. The cross-sectional height of the single variable cutting die is constant, but the cross-sectional width gradually narrows along the length direction. The cross-sectional height and width of the double variable cutting die both gradually narrow along the length direction.

[0007] The oil injectors are spaced apart in the toothed die, and the oil injectors are driven to extend and slide. The oil injectors in adjacent toothed dies are staggered.

[0008] In some embodiments, the toothed die is provided with a first slot at an interval, and adjacent toothed dies are provided with a second slot at an interval. The first slot and the second slot are staggered. The fuel injector is slidably disposed in the first slot and the second slot. The sliding direction of the fuel injector is perpendicular to the length direction of the toothed die.

[0009] In some embodiments, the automated grooving device for tool pliers proposed in this invention further includes a hanging plate, the grooving die is fixed to the side wall of the hanging plate, a fixing platform is provided on the side wall of the hanging plate away from the grooving die, and the oil injector slides vertically in the hanging plate by a spring, the spring being disposed between the fixing platform and the oil injector.

[0010] In some embodiments, the fixed platform is provided with an array of oil inlet holes, and a lower slot hole is connected to the oil inlet holes. The mounting plate is provided with an array of upper slot holes, which are arranged to overlap with the lower slot holes. An oil sealing hole is connected to the upper slot hole, and the cross-sectional dimension of the oil sealing hole is smaller than that of the upper slot hole.

[0011] In some embodiments, the fuel injector includes a flange, a connecting column, and a cylinder. The flange is slidably disposed in the space formed by the upper slot and the lower slot. The connecting column is disposed at the upper end of the flange. The cross-sectional dimension of the connecting column is smaller than that of the flange. The cylinder is sleeved on the connecting column. The flange edge is provided with multiple sets of first oil passage holes, and the connecting column is provided with multiple sets of second oil passage holes.

[0012] In some embodiments, the cylindrical body is provided with a spherical shell, and the spherical shell is provided with multiple sets of spray holes.

[0013] In some embodiments, the spring is connected between the lower wall of the flange and the bottom wall of the lower slot, and the connecting column is slidably disposed in the oil sealing hole.

[0014] In some embodiments, an oil passage block is provided on the upper end of the fixed platform, and the oil passage block is connected to the oil inlet hole.

[0015] In some embodiments, the automated grooving device for tool pliers proposed in this invention further includes a drain trough, which is located at the lower end of a fixed platform. The side wall of the fixed platform is connected to the drain trough via a bracket. A drive mechanism is provided on one side of the fixed platform, and the telescopic end of the drive mechanism is provided with a clamping block for clamping the tool pliers.

[0016] The beneficial effects achieved by this invention are as follows: The cross-section of the toothed die is designed with a gradient. By gradually increasing the feed rate during grooving and cutting the jaws, cutting resistance and cutting chips can be reduced, significantly improving product stability and equipment lifespan. Furthermore, the oil nozzles spaced apart in the toothed die can actively apply lubricating oil to the jaw teeth during the grooving process, based on the jaw position. This reduces lubricating oil consumption, improves grooving smoothness, and reduces problems such as tooth surface roughness and dulling. The staggered arrangement of the oil nozzles prevents the jaws from loosening at the nozzle locations, ensuring that the jaws are always positioned by at least a few sets of toothed dies, making the jaws more stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automated grooving device for tool pliers according to an embodiment of the present invention;

[0018] Figure 2 A diagram showing the positional relationship between the toothed die and the fuel injector on the fixed platform;

[0019] Figure 3 for Figure 2 A sectional view;

[0020] Figure 4 This is a cross-sectional view of the fuel injector;

[0021] Figure 5 This is a schematic diagram showing the positional relationship between the fuel injector and the toothed die during lifting and retraction.

[0022] Figure 6 A broken view of the sectional view of the fixed platform and the hanging plate.

[0023] Among them, 1. Sewage trough, 2. Support, 3. Fixed platform, 4. Oil passage block, 5. Drive mechanism, 6. Clamping block, 7. Hanging plate, 8. Toothed die, 9. First slot, 10. Second slot, 11. Oil nozzle, 12. Fixed tooth die, 13. Single variable die, 14. Double variable die, 15. Spring, 16. Flange, 17. Connecting column, 18. Cylinder, 19. Spherical shell, 20. First oil passage hole, 21. Second oil passage hole, 22. Spray hole, 23. Oil inlet hole, 24. Lower slot hole, 25. Upper slot hole, 26. Oil sealing hole.

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] like Figure 1 and Figure 2 As shown in the embodiment of the present invention, an automated grooving device for a pliers includes a grooving die 8. The grooving dies 8 are linearly and fixedly arranged. The spacing between the grooving dies 8 varies according to the design distance of the pliers jaws. The shape of the grooving dies 8 is based on the design of the jaw teeth. When the jaws slide on the grooving dies 8, the grooving dies 8 grooves and cuts the jaw surface to form a tooth shape. The spacing and shape of the tooth shape are processed by the grooving dies 8.

[0028] The toothed cutting die 8 includes a fixed-tooth die 12, a single-variable die 13, and a double-variable die 14. The single-variable die 13 is located at the lower end of the fixed-tooth die 12, and the double-variable die 14 is located at the lower end of the single-variable die 13. The fixed-tooth die 12, the single-variable die 13, and the double-variable die 14 are smoothly connected. The height and width of the cross-section of the fixed-tooth die 12 remain constant, that is, its cross-sectional shape remains constant. The height of the cross-section of the single-variable die 13 is constant, but its width gradually narrows along the length direction. The height and width of the cross-section of the double-variable die 14 both gradually narrow along the length direction. That is, along the length direction of the toothed cutting die 8, the height of the toothed cutting die 8 gradually increases. The lowest point of the toothed cutting die 8 is at the starting position of the tool pliers' grooving, and the highest point of the toothed cutting die 8 is at the ending position of the tool pliers' grooving. Along the length direction of the toothed cutting die 8, the width of the toothed cutting die 8 gradually widens. When the tool pliers grooves... The tool is first cut into a shallow, narrow groove by the double-changing die 14 of the toothed die 8. As the tool continues to slide along the toothed die 8, the cross-section of the double-changing die 14 gradually becomes higher and wider, and the jaws formed by the tool's groove also gradually become wider and higher. The tool continues to slide to the single-changing die 13, at which point the depth of the jaws remains constant. When the jaws are cut by the single-changing die 13, they only change in the width direction. When the tool continues to slide to the fixed-tooth die 12, the width and height of the jaws no longer change. When the fixed-tooth die 12 slides along the jaws, it polishes the jaws, making them smoother and more efficient. During this process, because the grooving is not completed in one go, the cutting feed gradually increases, which effectively controls the amount of iron filings generated during cutting. This facilitates chip removal and reduces the resistance generated during cutting, thereby improving the stability and appearance of the grooving.

[0029] like Figure 2 and Figure 3 As shown, the toothed die 8 is provided with oil nozzles 11 at intervals. The oil nozzles 11 are driven to extend and slide. The oil nozzles 11 in adjacent toothed dies 8 are staggered. When the jaws slide along the tooth groove to the oil nozzles 11, the jaws apply pressure to the oil nozzles 11, causing the oil nozzles 11 to retract into the toothed die 8. When the oil nozzles 11 retract, the internal oil passages are connected, and oil is sprayed outward. The oil acts on the initially cut tooth surface, which provides a certain lubrication for subsequent grooving cuts and reduces the subsequent cutting resistance. The staggered arrangement of adjacent oil nozzles 11 can ensure that the jaws can simultaneously engage with the array of toothed dies 8 at any position, so that the jaws and toothed dies 8 fit tightly together and ensure the stability of the jaws. If the oil nozzles 11 in adjacent toothed dies 8 are arranged flat, the jaws will disengage from all toothed dies 8 at the current position when they are at the position of the oil nozzles 11, and wobbling may occur during grooving cuts.

[0030] In some embodiments, such as Figure 2As shown, the toothed die 8 is provided with a first slot 9 at intervals, and the adjacent toothed die 8 is provided with a second slot 10 at intervals. The first slot 9 and the second slot 10 are staggered. The oil nozzle 11 is slidably disposed in the first slot 9 and the second slot 10. The sliding direction of the oil nozzle 11 is perpendicular to the length direction of the toothed die 8.

[0031] In some embodiments, the automated grooving device for pliers proposed in this invention further includes a hanging plate 7, a toothed die 8 fixed to the side wall of the hanging plate 7, and a fixed platform 3 provided on the side wall of the hanging plate 7 away from the toothed die 8. An oil nozzle 11 slides vertically in the hanging plate 7 via a spring 15, which is located between the fixed platform 3 and the oil nozzle 11. When the oil nozzle 11 is subjected to jaw pressure, it compresses the spring 15 inward, thereby opening the oil hole inside the oil nozzle 11 and spraying oil into the jaw area. If the oil nozzle 11 does not contact the jaw, it will be pushed upward by the elastic force of the spring 15, disconnecting the internal oil passage and preventing the oil from spraying outward. This spraying method can determine the grooving position of the pliers and achieve precise oil spraying. In areas not contacted by the pliers, the oil nozzle 11 will not spray oil outward, thereby improving oil utilization efficiency and reducing losses.

[0032] In some embodiments, such as Figures 4-6As shown, the fixed platform 3 has an array of oil inlet holes 23. An oil passage block 4 is located at the upper end of the fixed platform 3, communicating with the oil inlet holes 23. The oil passage block 4 supplies oil, filling the oil inlet holes 23 with oil. A lower groove hole 24 is connected to the oil inlet hole 23. An upper groove hole 25 is arrayed on the hanging plate 7, coinciding with the lower groove hole 24. Oil enters the lower groove hole 24 and upper groove hole 25 from the oil inlet hole 23. A sealing hole 26 is connected to the upper groove hole 25, with a cross-sectional dimension smaller than that of the upper groove hole 25. The nozzle 11 includes a flange 16, a connecting column 17, and a cylinder 18. The flange 16 slides within the space formed by the upper groove hole 25 and the lower groove hole 24. The connecting column 17 is located at the upper end of the flange 16, with a cross-sectional dimension smaller than that of the flange 16. The cylinder 18 is fitted onto the connecting column 17. Multiple sets of first oil passage holes 20 are provided on the edge of the flange 16, and multiple sets of second oil passage holes 21 are provided through the connecting column 17. The spring 15 is connected between the lower wall of the flange 16 and the bottom wall of the lower groove hole 24. The connecting column 17 is slidably disposed in the sealing oil hole 26. When the nozzle 11 is not pressurized, the flange 16 is pushed up by the spring 15 to a position that fits against the upper wall of the upper groove hole 25. The first oil passage hole 20 is sealed by the upper wall of the upper groove hole 25, thereby interrupting the upper groove hole 25, the lower groove hole 24 and the second oil hole. The oil cannot flow into the second oil hole, and the nozzle 11 cannot spray the oil outward. When the nozzle 11 is pressurized, the flange 16 moves downward, so that a gap appears between the upper wall of the flange 16 and the upper wall of the upper groove hole 25. The first oil passage hole 20 and the second oil passage hole 21 are connected, and the oil below can enter the second oil passage hole 21 and be sprayed outward from the cylinder 18, thereby realizing the oil spraying operation.

[0033] In some embodiments, the cylinder 18 is provided with a spherical shell 19, and the spherical shell 19 is provided with multiple sets of spray holes 22. The spherical design of the spherical shell 19 can reduce the resistance and damage generated when the pliers come into contact with the spherical shell 19, so that the spherical shell 19 can smoothly retract inward when it makes smooth contact with the pliers, avoiding collision problems and protecting the smoothness of the tooth surface of the pliers. When the spherical shell 19 retracts, refer to Figure 5 As shown on the left side, when the spherical surface of the spherical housing 19 is tangent to the toothed die 8, it will no longer be subjected to the pressure of the tool clamps. When the spherical housing 19 extends, refer to... Figure 5 As shown on the right half, the spherical surface of the spherical shell 19 protrudes beyond the cross-sectional contour of the toothed die 8 so as to make subsequent contact with the tool pliers; and the spray holes 22 arranged in multiple directions can spray oil in all directions of the tool pliers tooth surface to achieve the effect of covering the oil and improve the smoothness of the groove.

[0034] In some embodiments, such as Figure 1As shown in the figure, the automated grooving device for tool pliers proposed in this embodiment of the invention also includes a drain trough 1. The drain trough 1 is located at the lower end of the fixed platform 3. The drain trough 1 is used to treat the oil sprayed from the oil nozzle 11 to avoid oil pollution of the surrounding environment. At the same time, it also provides a certain support for the fixed platform 3. The side wall of the fixed platform 3 is connected to the drain trough 1 through a bracket 2. The bracket 2 can further stabilize the fixed platform 3 and prevent the fixed platform 3 from shaking during the grooving operation. A drive mechanism 5 is provided on one side of the fixed platform 3. The telescopic end of the drive mechanism 5 is provided with a clamping block 6 for clamping the tool pliers. The tool pliers are clamped in the clamping block 6 and slide up and down with the drive mechanism 5. During the sliding process, the jaws of the tool pliers are cut by the toothed die 8 to form the corresponding tooth shape. The drive mechanism 5 is configured to be hydraulically driven, which can overcome the resistance generated by cutting.

[0035] 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.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automated grooving device for tool pliers, characterized in that, include: The linearly fixed arrangement of toothed cutting dies (8) includes a fixed-tooth cutting die (12), a single-variable cutting die (13), and a double-variable cutting die (14). The single-variable cutting die (13) is located at the lower end of the fixed-tooth cutting die (12), and the double-variable cutting die (14) is located at the lower end of the single-variable cutting die (13). The height and width of the cross-section of the fixed-tooth cutting die (12) remain constant. The height of the cross-section of the single-variable cutting die (13) remains constant, but the width of the cross-section gradually narrows along the length direction. The height and width of the cross-section of the double-variable cutting die (14) both gradually narrow along the length direction. The oil nozzles (11) are spaced apart in the toothed die (8). The oil nozzles (11) are driven to extend and slide, and the oil nozzles (11) in adjacent toothed dies (8) are staggered. Hanging plate (7), the toothed die (8) is fixed to the side wall of the hanging plate (7), and a fixed platform (3) is provided on the side wall of the hanging plate (7) away from the toothed die (8). The oil nozzle (11) slides vertically in the hanging plate (7) through a spring (15). The spring (15) is located between the fixed platform (3) and the oil nozzle (11). The fixed platform (3) is provided with an array of oil inlet holes (23), and a lower groove hole (24) is connected to the oil inlet hole (23). The hanging plate (7) is provided with an array of upper groove holes (25), and the upper groove hole (25) is arranged to coincide with the lower groove hole (24). An oil sealing hole (26) is connected to the upper groove hole (25). The cross-sectional dimension of the oil sealing hole (26) is smaller than that of the upper groove hole (25). The fuel injector (11) includes a flange (16), a connecting column (17), and a cylinder (18). The flange (16) is slidably disposed in the space formed by the upper slot (25) and the lower slot (24). The connecting column (17) is disposed at the upper end of the flange (16). The cross-sectional dimension of the connecting column (17) is smaller than that of the flange (16). The cylinder (18) is sleeved on the connecting column (17). The flange (16) has multiple sets of first oil passage holes (20) on its edge. The connecting column (17) has multiple sets of second oil passage holes (21) through it. The cylindrical body (18) is provided with a spherical shell (19), and the spherical shell (19) is provided with multiple sets of spray holes (22).

2. The automated grooving device for tool pliers according to claim 1, characterized in that: The toothed die (8) is provided with a first slot (9) at an interval, and the adjacent toothed die (8) is provided with a second slot (10) at an interval. The first slot (9) and the second slot (10) are staggered. The fuel injector (11) is slidably disposed in the first slot (9) and the second slot (10). The sliding direction of the fuel injector (11) is perpendicular to the length direction of the toothed die (8).

3. The automated grooving device for tool pliers according to claim 1, characterized in that: The spring (15) is connected between the lower wall of the flange (16) and the bottom wall of the lower slot (24), and the connecting column (17) is slidably disposed in the oil sealing hole (26).

4. The automated grooving device for tool pliers according to claim 1, characterized in that: The upper end of the fixed platform (3) is provided with an oil passage block (4), which is connected to the oil inlet hole (23).

5. The automated grooving device for tool pliers according to claim 1, characterized in that: It also includes a drain trough (1), which is located at the lower end of the fixed platform (3). The side wall of the fixed platform (3) is connected to the drain trough (1) through a bracket (2). A drive mechanism (5) is provided on one side of the fixed platform (3). The telescopic end of the drive mechanism (5) is provided with a clamping block (6) for clamping the tool pliers.

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