A hybrid extrusion device for the production of cemented carbide cutting tools

Abstract

The present invention belongs to the technical field related to tool processing, and specifically discloses a hybrid extrusion device for the production of cemented carbide tools, including a machine base. A mixing tank is fixedly installed inside the machine base, and a top frame is fixedly installed on the upper surface of the machine base. A rotating shaft is connected inside the top frame through a rotating mechanism provided, and the lower end of the rotating shaft extends to the inside of the mixing tank. A spiral blade is arranged on the outer side of the rotating shaft, and the diameter of the spiral blade decreases sequentially from bottom to top. A clamping ring is fixedly installed above the inside of the mixing tank, a gear ring is rotatably installed inside the clamping ring, a transmission part is arranged on one side of the gear ring, and a material scattering mechanism is arranged at equal intervals along the circumferential direction at the bottom of the gear ring. A feeding box is communicated and installed below the inside of the mixing tank, and a screw extruder is communicated and installed below the inside of the feeding box. The present invention can fully process the agglomerates of metal powder materials, make the mixing more sufficient, and prevent the occurrence of hollowing and other situations during the extrusion and die pressing process.

Description

Technical Field

[0001] The present invention belongs to the technical field related to tool processing, and specifically discloses a hybrid extrusion device for the production of cemented carbide tools. Background Art

[0002] Cemented carbide is an alloy material made by powder metallurgy process from refractory metal hard compounds and binding metals. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance, and is suitable for making tools.

[0003] When the existing device is in use, it cannot effectively disperse the agglomerated metal powder, resulting in the phenomenon of hollowing during the later heating and extrusion, and the hardness of the processed tool is relatively low, and the quality cannot be guaranteed. Therefore, we need to improve this. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the background art, and to propose a hybrid extrusion device for the production of cemented carbide tools.

[0005] To achieve the above purpose, the present invention discloses a hybrid extrusion device for the production of cemented carbide tools, including a machine base. A mixing tank is fixedly installed inside the machine base. A top frame is fixedly installed on the upper surface of the machine base. A rotating shaft is connected inside the top frame through a rotating mechanism provided. The lower end of the rotating shaft extends into the mixing tank. A spiral blade is arranged on the outer side of the rotating shaft, and the diameter of the spiral blade decreases successively from bottom to top. A clamping ring is fixedly installed above the inner side of the mixing tank. A gear ring is rotatably installed inside the clamping ring. A transmission member is arranged on one side of the gear ring. Scattering mechanisms are arranged at equal intervals along the circumferential direction at the bottom of the gear ring. A feeding box is communicated and installed below the inner side of the mixing tank. A screw extruder is communicated and installed below the inner side of the feeding box. An extrusion head is arranged at one end of the screw extruder. A rotating pressing die assembly is arranged outside the screw extruder and below the extrusion head.

[0006] Preferably, the rotating mechanism includes a first motor fixedly installed inside the top frame. The output end of the first motor is connected to the upper end of the rotating shaft. A clamping seat is rotatably sleeved below the outer side of the rotating shaft. The clamping seat is fixedly installed at the lower end inside the mixing tank.

[0007] Preferably, the transmission member includes a connecting shaft arranged on one side of the gear ring. A secondary gear is fixedly installed at the end of the connecting shaft. The outer part of the output end of the first motor is connected to the connecting shaft through a pulley assembly provided. The secondary gear meshes with the gear ring.

[0008] Preferably, the bulk material mechanism includes an inclined plate fixedly installed at the bottom of the gear ring. One side of the inclined plate is fixedly installed with a machine housing. Inside the machine housing, a third motor is fixedly installed. The output end of the third motor penetrates above the inclined plate and is fixedly installed with a disc at the end. A dispersion ring is fixedly installed on the upper surface of the disc. Stirring components are arranged at both the upper and lower ends inside the inclined plate.

[0009] Preferably, the stirring component includes a clamping shaft rotatably installed at one end inside the inclined plate. Second gears are fixedly sleeved on the outer side of the clamping shaft and near the upper part. A first gear is sleeved outside the output end of the third motor. The first gear meshes with the second gear. A triangular rod is installed above the outer side of the clamping shaft. Multiple sharp spikes are fixedly installed on the upper surfaces of each end of the triangular rod.

[0010] Preferably, a double-joint roller is fixedly installed at the bottom end of one of the clamping shafts. A cylinder shell is rotatably sleeved on the outer side of the double-joint roller. Multiple groups of through openings are arranged on the outer side of the cylinder shell. Connecting columns are fixedly connected to the outer walls on both sides of the cylinder shell. Clamping rods are fixedly sleeved on the outer sides of the ends of the two connecting columns away from each other. One end of the two clamping rods away from the connecting columns is connected to the outer side of the machine housing.

[0011] Preferably, the rotating die pressing component includes a base. A second motor is fixedly installed on the upper surface of the base. A turntable is fixedly installed on the output shaft of the second motor. Multiple groups of molds are installed on the upper surface of the turntable. A U-shaped rod is fixedly installed on the outer side of one end of the machine base. Cylinders are fixedly installed at both ends of the bottom of the U-shaped rod. The output ends of the two cylinders are fixedly connected to a pressing seat. A cooling component is arranged on the outer side of the screw extruder and near one end of the extrusion head.

[0012] Preferably, the cooling component includes a sleeve fixedly sleeved on the outer side of the screw extruder and near one end of the extrusion head. A cooling fan is fixedly connected to the bottom end of the sleeve. Ventilation openings are equidistantly arranged along the circumferential direction inside the cooling fan.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By arranging spiral blades inside the mixing tank, the materials at the bottom inside the mixing tank can be pushed upward, then rotated and dropped onto the surface of the inclined plate. Then, driven by the third motor, the anti-dispersion ring can break up the agglomerated materials. Moreover, the triangular rods and spikes at the upper and lower ends of the inclined plate can be in full contact with the materials, so that the materials dropped onto the surface of the inclined plate can be fully broken up. And the inclined plate can rotate with the gear ring. Driven by the rotation of the sub-gear and the connecting shaft, the gear ring rotates above the inside of the mixing tank, so that the materials can be processed more fully.

[0015] 2. Through the provided cylinder shell and the double-section drum inside the cylinder shell connected to one of the clamping shafts, driven by the rotation of the clamping shaft, as the double-section drum rolls, the material can pass through the cylinder shell when passing through the opening and be rolled out by the double-section drum. Therefore, when processing the material, not only can the mixing effect be improved, but the dispersed material can also be replaced and dispersed again, thereby facilitating the subsequent extrusion molding.

[0016] 3. By using the rotating turntable in conjunction with the cylinder above, the material coming out of the extruder head can be discharged into the corresponding mold, and then during the rotation process, it will be offset against the pressure seat driven by the cylinder, thereby promoting the forming of the tool, and then the cooling fan will blow the cooling air to improve the forming rate of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the inner structure of the mixing tank of the present invention;

[0019] Figure 3 A schematic diagram of the partial structural connection between the rotary die assembly and the screw extruder of the present invention;

[0020] Figure 4 Schematic diagram of the connection structure between the inclined plate and the cylindrical shell of the present invention;

[0021] Figure 5 This is a schematic diagram of the connection structure between the inclined plate and the cylindrical shell at another angle of the present invention.

[0022] In the figure: 1. base; 2. mixing tank; 3. first motor; 4. connecting shaft; 5. pulley assembly; 6. top frame; 7. discharge box; 8. U-shaped rod; 9. screw extruder; 10. turntable; 11. second motor; 12. mold; 13. base; 14. card seat; 15. snap ring; 16. spiral blade; 17. sub-gear; 18. rotating shaft; 19. third motor; 20. inclined plate; 21. gear ring; 22. clamping rod; 23. cylinder; 24. sleeve; 25. cooling fan; 26. extruder head; 27. vent; 28. pressure seat; 29. double-section roller; 30. disc; 31. triangular rod; 32. connecting column; 33. cylinder shell; 34. through port; 35. casing; 36. card shaft; 37. dispersion ring; 38. spike; 39. first gear; 40. second gear. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.

[0025] As Figures 1-5 shown, a hybrid extrusion device for the production of cemented carbide cutting tools includes a machine base 1. Inside the machine base 1, a mixing tank 2 is fixedly installed. On the upper surface of the machine base 1, a top frame 6 is fixedly installed. Inside the top frame 6, a rotating shaft 18 is connected through a set rotating mechanism. The lower end of the rotating shaft 18 extends into the inside of the mixing tank 2. Outside the rotating shaft 18, a spiral blade 16 is provided, and the diameter of the spiral blade 16 decreases successively from bottom to top. Above the inside of the mixing tank 2, a clamping ring 15 is fixedly installed. Inside the clamping ring 15, a gear ring 21 is rotatably installed. On one side of the gear ring 21, a transmission member is provided. Along the circumferential direction at equal intervals at the bottom of the gear ring 21, a material scattering mechanism is provided. Below the inside of the mixing tank 2, a feeding box 7 is communicated and installed. Below the inside of the feeding box 7, a screw extruder 9 is communicated and installed. One end of the screw extruder 9 is provided with an extrusion head 26. Outside the screw extruder 9 and below and near the extrusion head 26, a rotating pressing die assembly is provided.

[0026] The rotating mechanism includes a first motor 3 fixedly installed inside the top frame 6. The output end of the first motor 3 is connected to the upper end of the rotating shaft 18. Below the outside of the rotating shaft 18, a clamping seat 14 is rotatably sleeved. The clamping seat 14 is fixedly installed at the lower end inside the mixing tank 2. The clamping seat 14 can improve the stability of the lower end of the rotating shaft 18 when the rotating shaft 18 rotates.

[0027] The transmission member includes a connecting shaft 4 provided on one side of the gear ring 21. At the end of the connecting shaft 4, a sub-gear 17 is fixedly installed. The outside of the output end of the first motor 3 is connected to the connecting shaft 4 through a set pulley assembly 5. The sub-gear 17 meshes with the gear ring 21. The first motor 3 can drive the connecting shaft 4 on one side to rotate together through the externally provided pulley assembly 5, so that the sub-gear 17 at the end of the connecting shaft 4 meshes with the gear ring 21, and then the gear ring 21 can be rotated for use.

[0028] The material scattering mechanism includes an inclined plate 20 fixedly installed at the bottom of the gear ring 21. On one side of the inclined plate 20, a machine shell 35 is fixedly installed. Inside the machine shell 35, a third motor 19 is fixedly installed. The machine shell 35 is used to install the third motor 19 on the lower surface of one side of the inclined plate 20 for use, and an external battery for storage can be added at the inclined plate 20, so that the third motor 19 can be used. The output end of the third motor 19 penetrates above the inclined plate 20 and a disc 30 is fixedly installed at the end. On the upper surface of the disc 30, a dispersion ring 37 is fixedly installed. Stirring components are provided at both the upper and lower ends inside the inclined plate 20.

[0029] The stirring component includes a clamping shaft 36 rotatably installed at one inner end of the inclined plate 20. Second gears 40 are fixedly sleeved on the outer side of the clamping shaft 36 and near the upper part. A first gear 39 is sleeved outside the output end of the third motor 19. The first gear 39 meshes with the second gear 40. A triangular rod 31 is installed above the outer side of the clamping shaft 36. Multiple sharp spikes 38 are fixedly installed on the upper surfaces of each end of the triangular rod 31. The third motor 19 can drive the first gear 39 to rotate, which can not only cause the upper dispersion ring 37 to rotate, but also cooperate with the second gear 40 to cause the triangular rod 31 and the sharp spikes 38 to rotate to disperse the material. The sharp spikes 38 can perform secondary stabbing on the falling material, thereby fully processing the agglomerates.

[0030] The bottom end of one of the clamping shafts 36 is fixedly installed with a double-joint roller 29. A cylinder shell 33 is rotatably sleeved on the outer side of the double-joint roller 29. Multiple groups of through openings 34 are arranged on the outer side of the cylinder shell 33. Driven by the rotation of the corresponding clamping shaft 36, as the double-joint roller 29 rolls, the material can alternately pass through the cylinder shell 33 when passing through the through openings 34 and be carried out by the double-joint roller 29. Thus, the material can be secondarily dispersed below, and when the agglomerates are in contact with the double-joint roller 29 during rolling, the agglomerates can be extruded. Connecting columns 32 are fixedly connected to the outer walls on both sides of the cylinder shell 33. Clamping rods 22 are fixedly sleeved on the outer sides of the two ends of the two connecting columns 32 away from each other. The ends of the two clamping rods 22 away from the connecting columns 32 are connected to the outer side of the machine shell 35. Under the connection of the connecting columns 32 and the clamping rods 22, the cylinder shell 33 can be stably arranged below the inclined plate 20 for use.

[0031] The rotating die pressing component includes a base 13. A second motor 11 is fixedly installed on the upper surface of the base 13. A turntable  10 is fixedly installed on the output shaft of the second motor 11. Multiple groups of dies 12 are installed on the upper surface of the turntable 10. The second motor 11 can drive the turntable 10 to rotate, so that the dies 12 on the upper surface of the turntable 10 can sequentially rotate to the extrusion head 26 for filling. A U-shaped rod 8 is fixedly installed on the outer side of one end of the machine base 1. Cylinders 23 are fixedly installed at both bottom ends of the U-shaped rod 8. The output ends of the two cylinders 23 are fixedly connected to a pressing seat 28. A cooling component is arranged on the outer side of the screw extruder 9 near the extrusion head 26. The cylinders 23 can compact the material inside the die 12 by driving the pressing seat 28 to press down through expansion and contraction.

[0032] The cooling component includes a sleeve 24 fixedly sleeved on the outer side of the screw extruder 9 near the extrusion head 26. A cooling fan 25 is fixedly connected to the bottom end of the sleeve 24. The sleeve 24 can enable the cooling fan 25 to be used above the turntable 10. Ventilation openings 27 are equidistantly arranged along the circumferential direction on the inner side of the cooling fan 25. The cooling fan 25 cools and blows the dies 12 on the turntable 10 through multiple groups of ventilation openings 27.

[0033] Working principle: The material is poured into the interior of the mixing tank 2. The first motor 3 drives the rotating shaft 18 to rotate. The spiral blades 16 on the outer side of the rotating shaft 18 push the material reciprocally upward. At the same time, driven by the pulley assembly 5, the connecting shaft 4 drives the secondary gear 17 to rotate, causing the gear ring 21 inside the snap ring 15 to rotate, driving multiple inclined plates 20 at the bottom to rotate. The material will fall onto the surface of the inclined plates 20 during the upward pushing process. The third motor 19 can drive the first gear 39 at the output shaft to rotate. The first gear 39 will mesh and rotate with the second gears 40 at both ends, prompting multiple spikes 38 and the dispersion ring 37 outside the triangular rod 31 to disperse the falling material together, so as to avoid the generation of hollow bubbles and other situations during the subsequent heating and extrusion. One of the clamping shafts 36 is connected to the double-joint roller 29 inside the cylinder shell 33. Driven by the rotation of the corresponding clamping shaft 36, as the double-joint roller 29 rolls, the material can alternately pass through the cylinder shell 33 when passing through the through port 34 and is carried out by the double-joint roller 29. Thus, when processing the material, not only can the mixing effect be improved, but the dispersed material can also be alternately redispersed. Finally, the material falls into the screw extruder 9. Under the heating and pushing of the screw extruder 9, it is discharged from the extrusion head 26. Driven by the second motor 11, the turntable 10 rotates the mold 12 on the upper surface to the lower end of the extrusion head 26 in sequence. After the material is filled into the mold 12, it rotates away and is then squeezed by the pressure seat 28 driven by the telescopic movement of the air cylinder 23, prompting the material to form. During the rotation of the mold 12, the cooling fan 25 cools the mold 12 through multiple ventilation ports 27, thereby further improving the forming rate.

[0034] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A hybrid extrusion device for the production of cemented carbide cutting tools, comprising a machine base (1), characterized in that: Inside the machine base (1), a mixing tank (2) is fixedly installed. On the upper surface of the machine base (1), a top frame (6) is fixedly installed. Inside the top frame (6), a rotating shaft (18) is connected through a rotating mechanism. The lower end of the rotating shaft (18) extends to the inside of the mixing tank (2). A spiral blade (16) is arranged on the outer side of the rotating shaft (18), and the diameter of the spiral blade (16) decreases sequentially from bottom to top. Above the inside of the mixing tank (2), a snap ring (15) is fixedly installed. Inside the snap ring (15), a gear ring (21) is rotatably installed. A transmission part is arranged on one side of the gear ring (21). A material scattering mechanism is arranged at equal intervals along the circumferential direction at the bottom of the gear ring (21). Below the inside of the mixing tank (2), a feeding box (7) is connected and installed. Below the inside of the feeding box (7), a screw extruder (9) is connected and installed. One end of the screw extruder (9) is provided with an extrusion head (26). A rotating die pressing assembly is arranged outside the screw extruder (9) and below the extrusion head (26). The material scattering mechanism includes an inclined plate (20) fixedly installed at the bottom of the gear ring (21). On one side of the inclined plate (20), a machine shell (35) is fixedly installed. Inside the machine shell (35), a third motor (19) is fixedly installed. The output end of the third motor (19) penetrates above the inclined plate (20) and a disc (30) is fixedly installed at the end. On the upper surface of the disc (30), a dispersion ring (37) is fixedly installed. Stirring components are arranged at both the upper and lower ends inside the inclined plate (20). The stirring component includes a clamping shaft (36) rotatably installed at one end inside the inclined plate (20). Second gears (40) are fixedly sleeved on the outer side of the clamping shaft (36) and near the upper part. A first gear (39) is sleeved outside the output end of the third motor (19). The first gear (39) meshes with the second gear (40). Above the outer side of the clamping shaft (36), a triangular rod (31) is installed. On the upper surface of each end of the triangular rod (31), a plurality of pointed spikes (38) are fixedly installed. At the bottom end of one of the clamping shafts (36), a double-joint roller (29) is fixedly installed. A cylinder shell (33) is rotatably sleeved on the outer side of the double-joint roller (29). A plurality of groups of through openings (34) are arranged on the outer side of the cylinder shell (33). Connecting columns (32) are fixedly connected to the outer walls on both sides of the cylinder shell (33). Clamping rods (22) are fixedly sleeved on the outer sides of the two connecting columns (32) away from each other. The ends of the two clamping rods (22) away from the connecting columns (32) are connected to the outer side of the machine shell (35).

2. The hybrid extrusion equipment for producing cemented carbide cutting tools according to claim 1, wherein: The rotating mechanism includes a first motor (3) fixedly installed inside the top frame (6). The output end of the first motor (3) is connected to the upper end of the rotating shaft (18). Below the outer side of the rotating shaft (18), a clamping seat (14) is rotatably sleeved. The clamping seat (14) is fixedly installed at the lower end inside the mixing tank (2).

3. The hybrid extrusion equipment for producing cemented carbide cutting tools according to claim 2, characterized in that: The transmission member includes a connecting shaft (4) arranged on one side of the gear ring (21). A secondary gear (17) is fixedly installed at the end of the connecting shaft (4). The output end of the first motor (3) is connected to the connecting shaft (4) through a pulley assembly (5) provided outside. The secondary gear (17) meshes with the gear ring (21).

4. A hybrid extrusion device for the production of cemented carbide cutting tools according to claim 1, characterized in that: The rotating die pressing assembly includes a base (13). A second motor (11) is fixedly installed on the upper surface of the base (13). A turntable (10) is fixedly installed on the output shaft of the second motor (11). Multiple sets of dies (12) are installed on the upper surface of the turntable (10). A U-shaped rod (8) is fixedly installed on the outer side of one end of the machine base (1). Cylinders (23) are fixedly installed at both ends of the bottom of the U-shaped rod (8). The output ends of the two cylinders (23) are fixedly connected to a pressing seat (28). A cooling assembly is arranged on the outer side of the screw extruder (9) near the extrusion head (26).

5. The hybrid extrusion equipment for the production of cemented carbide cutting tools according to claim 4, characterized in that: The cooling assembly includes a sleeve frame (24) fixedly sleeved on the outer side of the screw extruder (9) near the extrusion head (26). A cooling fan (25) is fixedly connected to the bottom end of the sleeve frame (24). Ventilation openings (27) are equidistantly formed in the circumferential direction on the inner side of the cooling fan (25).

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