A combined stepped taper pipe thread die assembly

Abstract

The present application relates to the technical field of round plate dies, in particular to a combined stepped conical pipe thread round plate die assembly, which comprises a round plate die, the outer side of the round plate die is provided with a circular array of conical pipe holes, and the inner side of the round plate die is provided with a plurality of chip removal holes, the plurality of chip removal holes expand outward from top to bottom along the central axis of the round plate die, the long strip-shaped chips can be changed into smaller fragments through the mutual cooperation of the extrusion wheel, the transmission rod, the transmission wheel, the linkage groove, the reciprocating U-shaped plate, the linkage rod, the driving rod and the chip removal block, so that the material of the chips can be quickly discharged, the fragmented chips are more easily discharged through the chip removal holes, the risk of blockage is reduced, and each group of chip removal holes expands outward from top to bottom, which can effectively prevent the aggregation and accumulation of chips in the chip removal holes, thereby reducing the problem of chip removal hole blockage, which helps to maintain the continuity and stability of the cutting process and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of circular die technology, specifically a combined stepped conical pipe thread circular die assembly. Background Technology

[0002] Circular die cutters are typically used for machining small-sized external threads. They have cutting teeth suitable for different diameters and pitches to cut external threads on workpieces. These cutters usually have high hardness and cutting performance to efficiently cut and machine threads. In assembly line operations, the machining of workpieces using circular dies requires timely and rapid operation to complete specific tasks within a specified time. This can effectively reduce the machining time for each workpiece and ensure the normal operation of the system, thereby improving machining efficiency.

[0003] The existing use of combined stepped tapered pipe thread round dies presents the following challenges: Due to the material properties of the workpiece, traditional round dies generate a large number of ring-shaped chips during the cutting process. These ring-shaped chips are difficult to remove smoothly from the conventional chip removal holes, which may lead to chip accumulation in the cutting area, reducing cutting efficiency. Furthermore, the accumulation of ring-shaped chips can cause scratches or uneven wear on the workpiece surface, affecting the quality and precision of the workpiece. Current solutions involve using other auxiliary tools and setting special shapes in the chip removal holes for chip removal. However, due to the time constraints of production lines, it is still impossible to solve the problem of timely chip removal of the ring-shaped chips, resulting in low chip removal efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a combined stepped conical pipe thread die assembly, which solves the technical problem that traditional die-cutting processes generate a large number of ring-shaped chips that cannot be discharged in a timely manner.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: The technical solution adopted by the present invention to solve its technical problem is a combined stepped conical pipe thread round die assembly, including a round die. The outer side of the round die has a conical pipe hole arranged in a ring array. The inner side of the round die has a plurality of chip removal holes. The plurality of chip removal holes expand outward from top to bottom along the central axis of the round die. The inner side of the round die is equipped with a plurality of cutting edges between adjacent chip removal holes. The chip removal assembly is arranged inside each set of chip removal holes to clean up the large amount of ring-shaped chips generated in a timely manner.

[0006] Preferably, the chip removal assembly includes multiple transmission rods, which are rotatably connected to the inner cavity of the circular die and correspond to the cutting edge. A pressing wheel is mounted below the circular die on each of the transmission rods, and a transmission wheel is mounted above each of the transmission rods. A snake-shaped linkage groove is formed on the outer side of each transmission wheel. A pair of fixed rods are mounted on one side of the circular die near the transmission wheel. A reciprocating U-shaped plate is slidably connected to the outer side of the pair of fixed rods. A connecting plate is fixedly mounted on the top of each fixed rod. A linkage rod is mounted on the top of the reciprocating U-shaped plate near the central axis of the circular die. The linkage rod is slidably connected inside the linkage groove. Drive rods are mounted on the two vertical ends below the reciprocating U-shaped plate. Chip removal blocks are arranged in a linear array between the two drive rods located inside the chip removal hole. The chip removal blocks are located on one side of the cutting edge and are arranged in an arc-shaped array.

[0007] Preferably, the chip removal block has pointed parts installed at both ends of the upper and lower ends near the central axis of the round die. The pointed parts are made of hard material, and the side of the pointed part located at the top has chip grooves arranged in a linear array.

[0008] Preferably, the two drive rods located in the chip removal hole are equipped with baffles, and the baffles are installed above the chip removal block and closely attached to it. The baffles are arranged in an arc-shaped array on one side near the central axis of the circular die.

[0009] Preferably, the baffles are inclined downwards, and the inclination lengths of the baffles are different, with the baffles at the top having a greater inclination length than those at the bottom.

[0010] Preferably, an expansion spring is sleeved on the outside of the fixed rod and below the reciprocating U-shaped plate. The upper and lower ends of the expansion spring are fixedly connected to the reciprocating U-shaped plate and the circular plate tooth. A vibrating rod is installed directly below the connecting plate and is tightly attached to the top surface of the reciprocating U-shaped plate.

[0011] Preferably, the bottommost side of the vibrating rod is positioned below the topmost side of the linkage groove.

[0012] Preferably, a limiting block is installed on one side of the chip removal block at the bottom end near the cutting edge, and a limiting groove is formed on one side of the limiting block of the round die, and the limiting block is slidably connected inside the limiting groove.

[0013] Preferably, the outer side of the extrusion wheel is made of rubber pad material, and chip removal blocks arranged in a ring array are installed on the top surface of the extrusion wheel.

[0014] The beneficial effects of this invention are: By applying the technical solution of this invention, the extrusion wheel rotates on the surface of the workpiece, and through the cooperation of the transmission rod, transmission wheel, linkage groove, reciprocating U-shaped plate, linkage rod, drive rod and chip removal block, long strips of chips can be broken into smaller fragments, which facilitates the rapid discharge of chip material. The fragmented chips are more easily discharged through the chip removal holes, reducing the risk of blockage. Moreover, each set of chip removal holes expands from top to bottom and outward, which can effectively prevent the accumulation and buildup of chips in the chip removal holes, thereby reducing the problem of chip removal hole blockage. This helps to maintain the continuity and stability of the cutting process and improve production efficiency, and can quickly remove chips in assembly line operations. By applying the technical solution of the present invention, the present invention, through the cooperation of the expansion spring and the vibrating rod, can effectively make the debris on the surface of the baffle quickly detach and prevent the debris from accumulating on the surface of the baffle. On the other hand, it can also quickly detach the debris on one side of the tip located above from the debris groove. At the same time, it can also effectively cut long strips of debris in time, thereby improving the cutting efficiency of the present invention. By applying the technical solution of this invention, the baffle is set to a downward inclination, which can discharge the sliding debris from the chip discharge hole along the surface of the baffle. By setting baffles of different lengths with inclination, the debris in the chip discharge hole is evenly dispersed, and excessive debris accumulation in the same vertical direction is avoided. Since the top baffle has a larger inclination, the debris will flow quickly to the chip discharge hole, while the smaller inclination length of the bottom baffle can prevent debris from accumulating and clogging in the same place. This can maintain the unobstructed flow of the chip discharge hole, reduce the risk of clogging, and improve the continuity and efficiency of the cutting process. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the chip removal component of the present invention; Figure 3 This is a schematic diagram showing the relationship between the transmission wheel and the reciprocating U-shaped plate of the present invention; Figure 4 This is a bottom view of the overall structure of the present invention; Figure 5 for Figure 4 Cross-sectional view of AA; Figure 6 for Figure 5 A magnified view of part A in the image.

[0017] In the picture: 1. Round die; 11. Conical tube hole; 12. Chip removal hole; 13. Cutting edge; 2. Chip removal assembly; 21. Drive rod; 22. Extrusion wheel; 221. Chip removal drive block; 23. Drive wheel; 231. Linkage groove; 24. Fixed rod; 241. Expansion spring; 25. Reciprocating U-shaped plate; 26. Connecting plate; 261. Vibrating rod; 27. Linkage rod; 28. Drive rod; 29. ​​Chip removal block; 291. Tip part; 290. Chip groove; 292. Limiting block; 293. Limiting groove; 211. Baffle. Detailed Implementation

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

[0019] Please see Figures 1 to 6 The present invention provides a technical solution: Example 1: As Figures 1-3 As shown, a combined stepped conical pipe thread die assembly includes a die 1. The outer side of the die 1 has a ring-shaped array of conical pipe holes 11. The inner side of the die 1 has multiple chip removal holes 12, which expand outwards from top to bottom along the central axis of the die 1. Multiple cutting edges 13 are installed on the inner side of the die 1 between adjacent chip removal holes 12. A chip removal assembly 2 is disposed inside each set of chip removal holes 12 to promptly clean up the large amount of ring-shaped chips generated. The chip removal assembly 2 includes multiple drive rods 21, which are rotatably connected to the inner cavity of the die 1. Each drive rod 21 corresponds to a cutting edge 13. A pressing wheel 22 is installed below the die 1 through the drive rods 21. A transmission wheel 23 is installed above the transmission rod 21. A snake-shaped linkage groove 231 is opened on the outer side of the transmission wheel 23. A pair of fixed rods 24 are installed on one side of the round die 1. A reciprocating U-shaped plate 25 is slidably connected to the outer side of the pair of fixed rods 24. A connecting plate 26 is fixedly installed on the top of the fixed rods 24. A linkage rod 27 is installed on the top of the reciprocating U-shaped plate 25 near the central axis of the round die 1. The linkage rod 27 is slidably connected inside the linkage groove 231. Drive rods 28 are installed on the two vertical ends below the reciprocating U-shaped plate 25. Chip removal blocks 29 are installed in a linear array between the two drive rods 28 located inside the chip removal hole 12. The chip removal blocks 29 are located on one side of the cutting edge 13 and are arranged in an arc array.

[0020] First, the round die 1 is placed on the wrench and installed. Then, the round die 1 is aligned with the top surface of the workpiece, and each set of extrusion wheels 22 contacts the surface of the workpiece. When the round die 1 cuts the workpiece, its cutting edge 13 contacts and cuts the workpiece. The material around the workpiece is subjected to cutting force to form a series of cuts. At the same time, each set of extrusion wheels 22 rotates synchronously due to the rotation of the round die 1. When the extrusion wheels 22 rotate, they drive the transmission rod 21 and the transmission wheel 23 to rotate. The linkage rod 27 moves up and down along the linkage groove 231, which in turn drives the reciprocating U-shaped plate 25 to move up and down synchronously under the limiting action of the fixed rod 24. At this time, the two drive rods 28 in the chip removal hole 12 drive the chip removal block 29 to move up and down, which can promptly cut the series of cuts made by the cutting edge 13 on the workpiece and then remove them through the chip removal hole 12. This invention utilizes the rotational motion of the extrusion wheel 22 on the workpiece surface. Through the coordinated action of the transmission rod 21, transmission wheel 23, linkage groove 231, reciprocating U-shaped plate 25, linkage rod 27, drive rod 28, and chip removal block 29, long strip-shaped chips can be broken into smaller fragments, facilitating rapid material discharge. The fragmented chips are more easily discharged through the chip removal holes, reducing the risk of clogging. Furthermore, each set of chip removal holes 12 expands outward from top to bottom, effectively preventing chip accumulation and buildup in the chip removal holes 12, thereby reducing the problem of clogging. This helps maintain the continuity and stability of the cutting process and improves production efficiency, enabling rapid chip removal in assembly line operations.

[0021] like Figures 4-6 As shown, the chip removal block 29 has a tip 291 installed at both ends on the side near the central axis of the round die 1. The tip 291 is made of hard material. The tip 291 located at the top has chip grooves 290 arranged in a linear array on one side.

[0022] The present invention uses a chip removal block 29 with a hard tip 291 to quickly cut ring-shaped chips. The hard material at the tip of the cutting blade can effectively cut the chips and break them down into smaller fragments, making it easy to discharge the chips and preventing the chips from getting stuck or tangled on the cutting tool.

[0023] It is worth noting that when the chip removal block 29 moves downward, it can discharge downward chips due to gravity. When the chip removal block 29 moves upward, the chips will be discharged from the chip groove 290 along one side of the tip 291, so that the chips can be discharged from the chip groove 290 into the bottom of the round die 1. This makes it convenient for the chips to be discharged in time during the up and down transmission of the chip removal block 29.

[0024] Two drive rods 28 located in the chip removal hole 12 are equipped with baffles 211, and the baffles 211 are installed above the chip removal block 29 and are closely attached to it. The baffles 211 are arranged in an arc-shaped array on one side near the central axis of the circular tooth 1.

[0025] By setting baffle 211, it is possible to prevent the debris sliding off the top of the chip removal block 29 from entering the chip removal block 29 below and affecting the cutting effect of the tip 291 below. Setting baffle 211 can effectively prevent the sliding debris from contacting the tip 291 below.

[0026] The baffles 211 are inclined downwards, and the inclination lengths of the baffles 211 are different. The inclination length of the baffles 211 at the top is greater than that of the baffles 211 at the bottom.

[0027] In this invention, the baffle 211 is inclined downwards, which allows the falling chips to be discharged from the chip discharge hole 12 along the surface of the baffle 211. By setting baffles 211 of different lengths with different inclinations, the chips in the chip discharge hole 12 are evenly dispersed, and excessive chip accumulation in the same vertical direction is avoided. Since the top baffle has a larger inclination, the chips will flow quickly to the chip discharge hole 12, while the smaller inclination length of the bottom baffle 211 can prevent chips from accumulating and clogging in the same place. This can maintain the unobstructed flow of the chip discharge hole 12, reduce the risk of clogging, and improve the continuity and efficiency of the cutting process.

[0028] Example 2: As one embodiment of the present invention, such as Figure 3 As shown, an expansion spring 241 is sleeved on the outside of the fixed rod 24 and below the reciprocating U-shaped plate 25. The upper and lower ends of the expansion spring 241 are fixedly connected to the reciprocating U-shaped plate 25 and the circular plate tooth 1. A vibrating rod 261 is installed directly below the connecting plate 26. The vibrating rod 261 is tightly attached to the top surface of the reciprocating U-shaped plate 25.

[0029] When the linkage rod 27 reciprocates up and down along the inner side of the linkage groove 231, it releases the elastic potential energy of the expansion spring 241, and then drives the reciprocating U-shaped plate 25 to move rapidly upward along the top of the connecting plate 26. Due to the restriction of the vibrating rod 261, each set of reciprocating U-shaped plates 25, the drive rod 28, and the chip removal block 29 generate a vibration effect, thereby enabling the chips inside the chip removal hole 12 to be removed in time. On the one hand, it can effectively remove the chips on the surface of the baffle 211 quickly and prevent the chips from accumulating on the surface of the baffle 211. On the other hand, it can quickly remove the chips on one side of the tip 291 located above from the chip groove 290. At the same time, it can also effectively cut long chips in time, improving the cutting efficiency of the present invention.

[0030] The bottom side of the vibrating rod 261 is located below the top side of the linkage groove 231.

[0031] To prevent the linkage rod 27 on the reciprocating U-shaped plate 25 from impacting the transmission wheel 23 due to the release elasticity of the expansion spring 241, which would lead to unstable transmission of the transmission wheel 23, the present invention, through the above-mentioned arrangement, ensures that when the expansion spring 241 is released, the linkage rod 27 does not contact the top opening of the linkage groove 231, thereby preventing continuous impact on the transmission wheel 23.

[0032] like Figure 2 and Figure 5 As shown, a limiting block 292 is installed on one side of the chip removal block 29 located at the bottom end near the cutting edge 13. The round die 1 has a limiting groove 293 on one side of the limiting block 292, and the limiting block 292 is slidably connected inside the limiting groove 293.

[0033] By setting the limit block 292 and the limit groove 293, the cutting accuracy of the tip 291 can be improved, so that each set of tip 291 can cut accurately and in time when generating a series of chip removals. The upper and lower limits can restrict the movement range of the tip 291, prevent the tip 291 from going beyond the unnecessary cutting area, and improve the movement stability of the chip removal block 29.

[0034] The outer side of the extrusion roller 22 is made of rubber pad material, and chip removal blocks 221 arranged in a ring array are installed on the top surface of the extrusion roller 22.

[0035] The above settings can increase the friction between the extrusion wheel 22 and the workpiece, so as to effectively improve the transmission capacity of the extrusion wheel 22 during the rotation of the round die 1. When the extrusion wheel 22 rotates on the workpiece, the top surface of the extrusion wheel 22 easily comes into contact with and accumulates chips. Under the action of the chip removal drive block 221, the chips can be removed from the extrusion wheel 22 by the centrifugal pressure of the baffle 211, preventing the chips from affecting the transmission capacity of the extrusion wheel 22.

[0036] Working Principle: This is used for a combined stepped tapered pipe thread die assembly. In use, the die 1 is placed on a wrench and installed. The die 1 is then aligned with the top surface of the workpiece, while each set of extrusion rollers 22 contacts the workpiece surface. When the die 1 cuts the workpiece, its cutting edge 13 contacts and cuts the workpiece. The material around the workpiece is subjected to cutting force, forming concentric cuts. Simultaneously, each set of extrusion rollers 22 rotates synchronously due to the rotation of the die 1. The rotation of the extrusion rollers 22 drives the transmission rod 21 and transmission wheel 23 to rotate. The linkage rod 27 moves up and down reciprocally along the linkage groove 231, thereby driving the reciprocating U-shaped plate 25 along... Under the limiting action of the fixed rod 24, it also moves up and down in sync. At this time, the two drive rods 28 in the chip removal hole 12 drive the chip removal block 29 to move up and down in sync. This can promptly cut the rings of chips cut by the cutting edge 13 into pieces, which are then discharged from the chip removal hole 12. When the linkage rod 27 moves up and down along the inner side of the linkage groove 231, it releases the elastic potential energy of the expansion spring 241, and then drives the reciprocating U-shaped plate 25 to move quickly upward along the top of the connecting plate 26. Due to the limitation of the vibrating rod 261, each set of reciprocating U-shaped plates 25, drive rods 28 and chip removal blocks 29 produce a vibration effect, thereby enabling the chips inside the chip removal hole 12 to be discharged in time.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined stepped conical pipe thread die assembly, characterized in that, include: A circular die (1) has a conical tube hole (11) arranged in a ring array on its outer side and a plurality of chip removal holes (12) on its inner side. The plurality of chip removal holes (12) expand outward from top to bottom along the central axis of the circular die (1). A plurality of cutting edge portions (13) are installed on the inner side of the circular die (1) between adjacent chip removal holes (12). The chip removal component (2) is disposed inside each set of chip discharge holes (12) and is used to clean up a large number of ring-shaped chips in a timely manner. The chip removal assembly (2) includes multiple transmission rods (21), which are rotatably connected to the inner cavity of the round die (1). The multiple transmission rods (21) correspond to the cutting edge (13). The multiple transmission rods (21) rotatably pass through the lower part of the round die (1) and are fitted with a pressing wheel (22). A transmission wheel (23) is installed above the multiple transmission rods (21). A snake-shaped linkage groove (231) is opened on the outer side of the transmission wheel (23). A pair of fixing rods (24) are installed on one side of the round die (1) located on the transmission wheel (23). The outer sides of the pair of fixing rods (24) are slidably connected. There is a reciprocating U-shaped plate (25), and a connecting plate (26) is fixedly installed on the top of the fixed rod (24). A linkage rod (27) is installed on the top of the reciprocating U-shaped plate (25) near the central axis of the circular tooth (1). The linkage rod (27) is slidably connected inside the linkage groove (231). A drive rod (28) is installed on the two vertical ends below the reciprocating U-shaped plate (25). A chip removal block (29) is installed in a linear array between the two drive rods (28) inside the chip removal hole (12). The chip removal block (29) is located on one side of the blade (13). The chip removal block (29) is arranged in an arc array.

2. The combined stepped conical pipe thread round die assembly according to claim 1, characterized in that: The chip removal block (29) has a tip (291) installed at both ends on the side of the central axis near the round tooth (1). The tip (291) is made of hard material. The tip (291) located at the top has chip grooves (290) arranged in a linear array on one side.

3. The combined stepped conical pipe thread round die assembly according to claim 1, characterized in that: Two drive rods (28) located in the chip removal hole (12) are equipped with baffles (211), and the baffles (211) are installed above the chip removal block (29) and are arranged in an arc-shaped array on one side near the central axis of the round tooth (1).

4. The combined stepped conical pipe thread round die assembly according to claim 3, characterized in that: The baffles (211) are inclined downwards, and the inclination lengths of the baffles (211) are different. The inclination length of the baffle (211) at the top is greater than that of the baffle (211) at the bottom.

5. A combined stepped conical pipe thread die assembly according to claim 1, characterized in that: An expansion spring (241) is sleeved on the outside of the fixed rod (24) and below the reciprocating U-shaped plate (25). The upper and lower ends of the expansion spring (241) and the reciprocating U-shaped plate (25) are fixedly connected to the round plate tooth (1). A vibrating rod (261) is installed directly below the connecting plate (26). The vibrating rod (261) is tightly attached to the top surface of the reciprocating U-shaped plate (25).

6. A combined stepped conical pipe thread die assembly according to claim 5, characterized in that: The bottom side of the vibrating rod (261) is located below the top side of the linkage groove (231).

7. A combined stepped conical pipe thread die assembly according to claim 3, characterized in that: A limiting block (292) is installed on one side of the chip removal block (29) at the bottom end, near the cutting edge (13). The round die (1) has a limiting groove (293) on one side of the limiting block (292). The limiting block (292) is slidably connected inside the limiting groove (293).

8. A combined stepped conical pipe thread round die assembly according to claim 1, characterized in that: The outer side of the extrusion wheel (22) is made of rubber pad material, and the top surface of the extrusion wheel (22) is equipped with chip removal blocks (221) arranged in a ring.

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