Double-station edge extrusion die

Abstract

The invention relates to the technical field of metal extrusion forming, in particular to a double-station edge extrusion die which comprises an upper die plate and a lower die plate, a positioning cavity is formed in the plate face of the lower die plate, the upper die plate comprises an upper support, a sliding plate, a rough punch and a fine punch, the sliding plate is slidably connected to the surface of the upper support, and the rough punch and the fine punch are connected to the plate face of the sliding plate at intervals. A limiting cavity is coaxially formed in the end face of the rough punch, a stamping ring face is arranged on the end face of the rough punch, a guide cavity is coaxially formed in the end face of the fine punch, a fine pressing ring face is arranged on the end face, abutting against the bottom wall of the installation ring cavity, of the fine punch, and the fine pressing ring face is matched with the first edge and the second edge. According to the extrusion die, the sliding plate, the rough punch and the fine punch are arranged, extrusion forming of the workpiece is achieved, the fine punch punches the workpiece punched by the rough punch, stress concentration of the installation ring cavity to the fine pressing ring face is avoided, it is guaranteed that the fine punch and the rough punch are not prone to being abraded due to stress concentration, and therefore the service life of the extrusion die is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal extrusion forming technology, and particularly to a double-station edge extrusion die. BACKGROUND

[0002] Metal extrusion forming technology is a plastic processing method for obtaining a specific end face shape, size and mechanical performance part or semi-finished product by directional plastic deformation of a metal blank in a die under external force.

[0003] REFERENCE Figure 1 The workpiece includes a column 8 and a ring 9. The inner cavity wall of the column 8 is provided with a flower tooth. The inner ring wall of the ring 9 is integrally formed coaxially on the outer peripheral surface of the column 8. An installation ring cavity 91 is coaxially provided at one end of the ring 9 in the axial direction. The bottom wall of the installation ring cavity 91 includes an arc surface 1 91 1, an arc surface 2 91 2 and a connecting surface 91 3. One end of the connecting surface 91 3 is connected to one end of the arc surface 1 91 1 in the arc direction. The other end of the connecting surface 91 3 is connected to one end of the arc surface 2 91 2 in the arc direction. The end of the arc surface 2 91 2 away from the connecting surface 91 3 is in communication with the end of the arc surface 1 91 1 away from the connecting surface 91 3. The end surface of the arc surface 1 91 1 connected to the connecting surface 91 3 forms an edge 1 91 4. The end surface of the arc surface 2 91 2 connected to the connecting surface 91 3 forms an edge 2 91 5.

[0004] When the extrusion die punches the arc surface 1, the arc surface 2, the connecting surface, the edge 1 and the edge 2 at one time, the inner wall of the cavity is prone to stress concentration and wear under the pressure of the workpiece, thereby reducing the service life of the extrusion die. SUMMARY

[0005] In order to improve the service life of the extrusion die, the present application provides a double-station edge extrusion die.

[0006] The double-station edge extrusion die provided by the present application adopts the following technical scheme: The double-station edge extrusion die includes an upper die plate and a lower die plate. The lower die plate is provided with a positioning cavity for embedding the end of the column. The upper die plate includes an upper support, a sliding plate, a rough punch and a fine punch. The sliding plate is slidably connected to the surface of the upper support facing the positioning cavity. The rough punch and the fine punch are spaced apart and connected to the surface of the sliding plate. The end surface of the rough punch is coaxially provided with a limiting cavity for embedding the column. The end surface of the rough punch abutting against the bottom wall of the installation ring cavity is provided with a punching ring surface. The punching ring surface is adapted to the arc surface 1, the arc surface 2 and the connecting surface. The end surface of the fine punch is coaxially provided with a guide cavity for embedding the column. The end surface of the fine punch abutting against the bottom wall of the installation ring cavity is provided with a fine pressing ring surface. The fine pressing ring surface is adapted to the edge 1 and the edge 2.

[0007] By adopting the above technical solution, during workpiece processing, the end of the column is embedded in the positioning cavity, and the outer circumferential surface of the column abuts against the inner wall of the positioning cavity to form a positioning. The bottom wall of the mounting ring cavity faces the upper support, driving the slide plate to slide along the surface of the upper support. The axis of the rough punch coincides with the axis of the column. The upper and lower templates close, and the end of the column protruding from the lower template is coaxially embedded in the limiting cavity. The end of the rough punch is embedded in the mounting ring cavity. The stamping ring surface stamps the bottom wall of the mounting ring cavity and drives the bottom wall of the mounting ring cavity to form a transition state of arc surface one, connecting surface and arc surface two. The stamping ring surface is a smooth curve, reducing the stress concentration of the bottom wall of the mounting ring cavity on the stamping ring surface, realizing the rough machining of the bottom wall of the mounting ring cavity, and driving the upper... The template moves away from the lower template, the end of the column disengages from the limiting cavity, the slide plate continues to slide along the surface of the upper support, the axis of the fine punch coincides with the axis of the column, the upper and lower templates close, the end of the column protruding from the lower template is embedded in the guide cavity, the end of the fine punch is embedded in the mounting ring cavity, the fine pressure ring surface punches the bottom wall of the mounting ring cavity and drives the connection between the arc surface one and the connecting surface to form edge one, and the connection between the arc surface two and the connecting surface to form edge two, thereby realizing the extrusion forming of the workpiece. Moreover, the fine punch punches the workpiece after it has been punched by the coarse punch, avoiding stress concentration on the fine pressure ring surface of the mounting ring cavity, ensuring that the fine punch and the coarse punch are not easily worn due to stress concentration, thereby improving the service life of the extrusion die.

[0008] Optionally, the upper support surface is provided with a slide track for the slide plate to slide. The upper support is connected to a power component, which includes a power cylinder. The power cylinder is connected to the upper support surface. The piston rod end of the power cylinder is embedded in the slide track and connected to the slide plate surface. The power cylinder drives the slide plate to slide along the inner wall of the slide track.

[0009] By adopting the above technical solution, the slide plate is embedded in the inner cavity of the slide rail, and the surface of the slide plate abuts against the inner wall of the slide rail to form a limit; and the power cylinder drives the slide plate to slide on the inner wall of the slide rail, making it less likely for the slide plate to deviate on the inner wall of the slide rail, thereby improving the stability of the slide plate sliding on the inner wall of the slide rail; at the same time, the slide rail is set on the upper support, so that when the upper and lower mold plates are closed, the inner wall of the slide rail will be subjected to upward inertia, which partially cancels out the downward impact force on the workpiece, reducing the force on the machine tool guide rail adjacent to the lower mold plate, thereby protecting the machine tool guide rail.

[0010] Optionally, the power assembly further includes positioning block one and positioning block two, which are connected one-to-one to the inner walls on both sides of the slide rail along its length. When the piston rod of the power cylinder retracts, the surface of positioning block one abuts against the slide plate surface, and the axis of the coarse punch coincides with the axis of the column. When the piston rod of the power cylinder extends, the surface of positioning block two abuts against the slide plate surface, and the axis of the fine punch coincides with the axis of the column.

[0011] By adopting the above technical solution, when the piston rod of the power cylinder retracts, the slide plate slides along the inner wall of the slideway towards the direction of the first positioning block. The surface of the first positioning block abuts against the surface of the slide plate, and the axis of the rough punch coincides with the axis of the column. When the piston rod of the power cylinder extends, the slide plate slides along the inner wall of the slideway towards the direction of the second positioning block. The surface of the second positioning block abuts against the surface of the slide plate, and the axis of the fine punch coincides with the axis of the column. This achieves precise positioning of the slide plate sliding on the inner wall of the slideway, thereby improving the processing quality of the workpiece.

[0012] Optionally, the inner wall of the positioning cavity is coaxially provided with a sliding cavity for the end of the ring body to be embedded. The inner wall of the sliding cavity abuts against the outer peripheral surface of the ring body to form a positioning. A spline punch is coaxially fixed to the bottom wall of the positioning cavity. The spline punch can be embedded into the inner cavity of the cylinder and machine spline teeth on the inner cavity wall of the cylinder.

[0013] By adopting the above technical solution, when the end of the column is embedded in the positioning cavity and the end of the ring is embedded in the sliding cavity, the outer circumferential surface of the ring abuts against the inner wall of the sliding cavity to form positioning, and the end of the spline punch faces the inner cavity of the column. When the upper and lower mold plates are closed, the end of the rough punch is embedded in the mounting ring cavity, the punching ring surface squeezes the bottom wall of the mounting ring cavity, and drives the column to slide along the inner wall of the positioning cavity towards the spline punch. The spline punch is embedded in the inner cavity of the column and processes the spline teeth on the inner cavity wall of the column, which improves the processing efficiency of the workpiece, shortens the processing cycle of the workpiece, and thus reduces the processing cost of the workpiece.

[0014] Optionally, the lower template is connected to an ejector assembly, which includes multiple ejector rods. The bottom wall of the positioning cavity is provided with multiple ejector cavities for the ejector rods to slide. The multiple ejector cavities are evenly distributed around the axis of the spline punch. The sliding direction of the ejector rods is parallel to the axis of the spline punch. The surface of the lower template away from the upper template is provided with multiple force-applying cavities, which correspond one-to-one with the ejector cavities and are connected.

[0015] By adopting the above technical solution, the driving end of the power component abuts against the end face of the ejector rod in the ejection cavity through the force application cavity. The end face of the ejector rod, which is flush with the bottom wall of the positioning cavity, abuts against the end face of the column. When the column stamping in the positioning cavity is completed, the power component drives the ejector rod to slide along the inner wall of the ejection cavity toward the positioning cavity. The end face of the ejector rod abuts against the end face of the workpiece and pushes the workpiece away from the positioning cavity, realizing the automatic demolding of the workpiece on the lower template. At the same time, multiple ejector rods are evenly distributed around the axis of the spline punch, so that multiple ejector rods apply force evenly to the end face of the workpiece, making the workpiece less prone to wear due to excessive local pressure, thereby improving the processing quality of the workpiece.

[0016] Optionally, the inner walls of the slides facing each other are provided with heat dissipation arc channels, and both ends of the heat dissipation arc channels extend through both sides of the upper support along its length.

[0017] By adopting the above technical solution, the skateboard surface slides into contact with the inner wall of the track, and part of the kinetic energy of the skateboard surface and the inner wall of the track is converted into heat energy. The heat dissipation arc is located on the side of the track facing the skateboard. The air in the heat dissipation arc fully contacts the skateboard surface and the inner wall of the track and exchanges heat, thereby cooling the skateboard and the inner wall of the track, thus ensuring the stability of the skateboard sliding on the inner wall of the track.

[0018] Optionally, the upper support is connected to a cooling component, which includes multiple cooling rollers. The multiple cooling rollers are rotatably connected to the inner wall of the slide at intervals, and the wheel surfaces of the cooling rollers are in rolling contact with the slide plate surface.

[0019] By adopting the above technical solution, when the skateboard slides on the inner wall of the track, the cooling roller surface makes rolling contact with the skateboard surface, and rolling friction replaces sliding friction, reducing the friction between the skateboard and the inner wall of the track, reducing the conversion rate of the skateboard from kinetic energy to heat energy, thereby further ensuring the stability of the skateboard sliding inside the track.

[0020] Optionally, the cooling assembly further includes multiple cooling impellers, and the inner wall of the heat dissipation arc channel is provided with multiple rotating cavities for the cooling impellers to rotate. The cooling impellers rotate on the inner wall of the rotating cavities and drive the air flow in the heat dissipation arc channel.

[0021] By adopting the above technical solution, the cooling impeller rotates on the inner wall of the rotating cavity, and the rotating cavity is connected to the heat dissipation arc channel, which drives the outside air into the rotating cavity through the heat dissipation arc channel, promotes the air flow in the heat dissipation arc channel, and the air fully contacts the inner wall of the heat dissipation arc channel and exchanges heat, thereby improving the cooling efficiency of the inner wall of the heat dissipation arc channel, and thus further ensuring the stability of the slide plate sliding on the inner wall of the slide.

[0022] Optionally, the cooling impeller and the cooling roller are one-to-one, and the rotating shaft of the cooling roller is coaxially fixed with the rotating shaft of the cooling impeller.

[0023] By adopting the above technical solution, the rotating shaft of the cooling roller and the rotating shaft of the cooling impeller are fixed coaxially. When the sliding plate surface rolls into contact with the cooling roller and drives the cooling roller to rotate, it drives the cooling impeller to rotate on the inner wall of the rotating cavity. There is no need for an external power device to drive the cooling impeller to rotate, reducing energy input and thus embodying the concept of energy saving.

[0024] Optionally, the upper support is provided with an oil injection channel, and the oil injection channel is located on the side of the rotating cavity away from the heat dissipation arc.

[0025] By adopting the above technical solution, the oil is injected into the oil injection channel, and the oil comes into full contact with the inner wall of the oil injection channel and exchanges heat. The upper support is not prone to overheating, which improves the cooling efficiency of the upper support. The rotating cavity is located between the oil injection channel and the heat dissipation arc channel. The cooling impeller rotates on the inner wall of the rotating cavity, driving the air in the heat dissipation arc channel into the rotating cavity and impacting the inner wall of the rotating cavity. The oil transfers heat energy to the air through the upper support, thereby cooling the oil and ensuring the stability of heat exchange between the oil and the inner wall of the oil injection channel.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The setting of the slide, rough punch and fine punch enables the extrusion forming of the workpiece. The fine punch punches the workpiece after it has been punched by the rough punch, avoiding stress concentration on the fine pressing ring surface of the mounting ring cavity. This ensures that the fine punch and rough punch are not easily worn due to stress concentration, thereby improving the service life of the extrusion die. 2. The design of the power cylinder and slide rail makes it less likely for the slide plate to deviate from the inner wall of the slide rail, thereby improving the stability of the slide plate sliding on the inner wall of the slide rail; at the same time, the slide rail is located on the upper support, so that when the upper and lower mold plates are closed, the inner wall of the slide rail will be subjected to upward inertia, which partially cancels out the downward impact force on the workpiece, reducing the force on the machine tool guide rail adjacent to the lower mold plate, thereby protecting the machine tool guide rail; 3. The setting of positioning block one and positioning block two enables precise positioning of the slide plate as it slides along the inner wall of the slide rail, thereby improving the processing quality of the workpiece. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the workpiece in the prior art.

[0028] Figure 2 This is a schematic diagram of the overall structure in an embodiment of this application.

[0029] Figure 3 This is a partial cross-sectional view of the lower template in an embodiment of this application, mainly showing the force application cavity.

[0030] Figure 4 This is a partial structural diagram of the lower template in an embodiment of this application, mainly showing the spline punch.

[0031] Figure 5 This is a schematic diagram of the overall structure of the upper template in the embodiments of this application.

[0032] Figure 6 This is a partial cross-sectional view of the upper template in this embodiment, mainly showing the cooling component.

[0033] Explanation of reference numerals in the attached drawings: 1. Upper template; 11. Upper support; 111. Slide rail; 112. Heat dissipation arc; 113. Cooling chamber; 114. Rotating chamber; 115. Oil injection channel; 1151. Separating section; 116. Connecting chamber; 117. Power chamber; 118. Deformation chamber; 12. Slide plate; 13. Rough punch; 131. Limiting chamber; 132. Stamping ring surface; 14. Fine punch; 141. Guide chamber; 142. Fine pressing ring surface; 2. Lower template; 21. Positioning chamber; 22. Sliding chamber; 23. Ejection chamber; 24. Force application chamber; 3. Spline punch; 4. Power... Components; 41. Power cylinder; 42. Positioning block one; 43. Positioning block two; 5. Ejection assembly; 51. Ejector rod; 6. Cooling assembly; 61. Cooling piston; 62. Elastic element; 63. Power piston; 631. Starting groove; 64. Transmission roller; 65. Cooling cam; 66. Cooling roller; 67. Cooling impeller; 7. Starting assembly; 71. Thermal expansion and contraction strip; 72. Starting rod; 8. Column; 9. Ring; 91. Mounting ring cavity; 911. Arc surface one; 912. Arc surface two; 913. Connecting surface; 914. Edge one; 915. Edge two. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 2-6 This application will be described in further detail.

[0035] This application discloses a dual-station prism extrusion die. (Refer to...) Figure 2 and Figure 3 The dual-station prism extrusion die includes an upper template 1 and a lower template 2. The bottom of the lower template 2 is for mounting the machine tool guide rail. The top surface of the lower template 2 has a positioning cavity 21 for the end of the column 8 to be embedded. The inner wall of the positioning cavity 21 abuts against the outer circumferential surface of the column 8 to form a positioning. The inner wall of the positioning cavity 21 has a sliding cavity 22 coaxially formed for the end of the ring 9 to be embedded. The inner wall of the sliding cavity 22 abuts against the outer circumferential surface of the ring 9 to form a positioning.

[0036] Reference Figure 3 and Figure 4 The bottom wall of the positioning cavity 21 is coaxially embedded with a spline punch 3, which can be embedded into the inner cavity of the column 8 and process spline teeth on the inner cavity wall of the column 8; the upper template 1 includes an upper support 11, a sliding plate 12, a rough punch 13 and a fine punch 14, and one side of the upper support 11 is installed for the drive end of the power equipment, which drives the upper support 11 to move closer to or away from the lower template 2.

[0037] Reference Figure 3 and Figure 5 The upper support 11 has a slide rail 111 on the surface facing the lower template 2 for the slide plate 12 to slide. The sliding direction of the slide plate 12 is parallel to the length direction of the upper support 11, and the slide rail 111 passes through both ends of the upper support 11 in the length direction. The coarse punch 13 and the fine punch 14 are fixed to the surface of the slide plate 12 facing the lower template 2 by bolts at intervals.

[0038] Reference Figure 3 and Figure 5 The end face of the rough punch 13 is coaxially provided with a limiting cavity 131 for the end of the column 8 to be inserted. When the end of the column 8 protruding from the lower template 2 is inserted into the limiting cavity 131, the end of the rough punch 13 is inserted into the mounting ring cavity 91. The end face of the rough punch 13 that abuts against the bottom wall of the mounting ring cavity 91 is provided with a stamping ring surface 132. The stamping ring surface 132 is adapted to the arc surface 911, the connecting surface 913 and the arc surface 912. The stamping ring surface 132 can squeeze the bottom wall of the mounting ring cavity 91 and drive the bottom wall of the mounting ring cavity 91 to form the arc surface 911, the connecting surface 913 and the arc surface 912, thereby realizing the rough machining of the workpiece.

[0039] Reference Figure 3 and Figure 5 The end face of the precision punch 14 is coaxially provided with a guide cavity 141 for the end of the column 8 to be inserted. When the end of the column 8 protruding from the lower template 2 is inserted into the guide cavity 141, the end of the precision punch 14 is inserted into the mounting ring cavity 91. The end face of the precision punch 14 that abuts against the bottom wall of the mounting ring cavity 91 is provided with a precision pressing ring surface 142. The precision pressing ring surface 142 is adapted to edge one 914 and edge two 915. The precision pressing ring surface 142 can compress the arc surface one 911, the connecting surface 913 and the arc surface two 912 and drive the connection between the arc surface one 911 and the connecting surface 913. Edge 914 is formed at the junction of the arc surface 912 and the connecting surface 913, and edge 915 is formed at the junction of the arc surface 912 and the connecting surface 913, so as to realize the extrusion forming of the workpiece; and the curve of the stamping ring surface 132 is smooth without abrupt change, which reduces the stress concentration on the stamping ring surface 132. Furthermore, the fine pressing ring surface 142 stamps the workpiece after it has been stamped by the stamping ring surface 132, avoiding stress concentration on the fine pressing ring surface 142, realizing the secondary processing of the workpiece, and avoiding the wear of the rough punch 13 and the fine punch 14 due to stress concentration, thereby extending the service life of the mold.

[0040] Reference Figure 3 and Figure 5 The upper support 11 is equipped with a power assembly 4, which can control the slide plate 12 to slide in a directional manner on the inner wall of the slide track 111. The power assembly 4 includes a power cylinder 41, a positioning block 1 42 and a positioning block 2 43. The power cylinder 41 is fixed to the side wall of the upper support 11 by bolts. The piston rod axis of the power cylinder 41 is parallel to the length direction of the upper support 11. The end of the piston rod of the power cylinder 41 is embedded in the slide track 111 and fixed to the surface of the slide plate 12. The power cylinder 41 drives the slide plate 12 to slide on the inner wall of the slide track 111. The inner wall of the slide track 111 abuts against the surface of the slide plate 12 to form a positioning, thereby ensuring the stability of the slide plate 12 sliding on the inner wall of the slide track 111.

[0041] Reference Figure 3 and Figure 5Positioning blocks 42 and 43 are fixed to the bottom walls of the slide rail 111 along its length by bolts. When the piston rod of the power cylinder 41 retracts, it drives the slide plate 12 to slide along the inner wall of the slide rail 111 towards the positioning block 42. The surface of the positioning block 42 abuts against the surface of the slide plate 12. The axis of the rough punch 13 coincides with the axis of the column 8. The power device drives the upper support 11 to approach the lower template 2, and the upper template 1 and the lower template 2 close. The end of the column 8 protruding from the lower template 2 is coaxially embedded in the limiting cavity 131. The end of the rough punch 13 is embedded in the mounting ring cavity 91. The stamping ring surface 132 presses the bottom wall of the mounting ring cavity 91 and drives the bottom wall of the mounting ring cavity 91 to form an arc surface 911, a connecting surface 913, and an arc surface 912. At the same time, the bottom wall of the mounting ring cavity 91 is pressed by the stamping ring surface 132, which drives the column 8 to slide along the inner wall of the positioning cavity 21 toward the spline punch 3. The spline punch 3 is embedded in the inner cavity of the column 8 and processes the spline teeth on the inner wall of the column 8, so as to realize the simultaneous stamping of multiple stamping surfaces of the workpiece, thereby improving the processing efficiency of the workpiece.

[0042] Reference Figure 3 and Figure 5 The power unit drives the upper support 11 away from the lower template 2, the end of the punch disengages from the limiting cavity 131, the piston rod of the power cylinder 41 extends, and drives the slide plate 12 to slide along the inner wall of the slide rail 111 towards the positioning block 1 42. The surface of the positioning block 2 43 abuts against the surface of the slide plate 12. The axis of the precision punch 14 coincides with the axis of the column 8. The power unit drives the upper support 11 to approach the lower template 2. The upper template 1 and the lower template 2 close the mold. The end of the column 8 protruding from the lower template 2 is coaxially embedded in the guide cavity 141. The end of the precision punch 14 is embedded in the mounting ring cavity 91. The precision pressing ring surface 142 extrudes the arc surface 1 911, the connecting surface 913 and the arc surface 2 912, driving the connection between the arc surface 1 911 and the connecting surface 913 to form the edge 1 914, and the connection between the arc surface 2 912 and the connecting surface 913 to form the edge 2 915, thereby realizing the extrusion forming of the workpiece.

[0043] Reference Figure 3 The lower template 2 is equipped with an ejector assembly 5, which can push the column 8 out of the positioning cavity 21. The ejector assembly 5 includes multiple ejector rods 51. The bottom wall of the positioning cavity 21 is provided with multiple ejector cavities 23 for the ejector rods 51 to slide. The multiple ejector cavities 23 are evenly distributed around the axis of the spline punch 3, and the sliding direction of the ejector rods 51 is parallel to the axis of the spline punch 3. The bottom of the lower template 2 is provided with multiple force application cavities 24, which correspond one-to-one with the ejector cavities 23 and are connected.

[0044] Reference Figure 3The drive end of the power unit is embedded in the ejection cavity 23 through the force application cavity 24 and abuts against the rod surface of the ejector rod 51. The end face of the ejector rod 51, which is flush with the positioning cavity 21, abuts against the end face of the column 8. When the workpiece on the positioning cavity 21 is extruded and formed, the drive end of the power unit drives the ejector rod 51 to slide along the inner wall of the ejection cavity 23 toward the positioning cavity 21. The rod surface of the ejector rod 51 abuts against the end face of the column 8 and pushes the column 8 away from the positioning cavity 21, thereby realizing the automated unloading of the workpiece. Moreover, the multiple ejection cavities 23 are evenly distributed around the axis of the spline punch 3, avoiding wear between the column 8 and the inner wall of the positioning cavity 21, thereby improving the processing quality of the workpiece.

[0045] Reference Figure 5 and Figure 6 The inner walls of the slides 111 facing each other are provided with heat dissipation arc channels 112. Both ends of the heat dissipation arc channels 112 extend through both sides of the upper support 11 along its length. In this embodiment, heat dissipation arc channels 112 are also provided on the sides of the upper support 11 away from the slides 111, which increases the contact area between the upper support 11 and the air, allowing the upper support 11 to fully contact the air and exchange heat, thereby improving the cooling efficiency of the upper support 11.

[0046] Reference Figure 5 and Figure 6 The upper support 11 is equipped with a cooling component 6, which can cool the slide plate 12 and the upper support 11, thereby ensuring the stability of the slide plate 12 sliding on the inner wall of the slide rail 111. The cooling component 6 includes a cooling piston 61, an elastic element 62, multiple power pistons 63, multiple transmission rollers 64, multiple cooling cams 65, multiple cooling rollers 66, and multiple cooling impellers 67. The inner wall of the slide rail 111 is provided with multiple cooling chambers 113 for the cooling rollers 66 to rotate. The arrangement direction of the heated cavity 113 is parallel to the length direction of the upper support 11. The rotation axis of the cooling roller 66 is parallel to the sliding direction of the upper support 11. The wheel surface of the cooling roller 66 protruding from the inner wall of the slide 111 rolls into contact with the surface of the slide plate 12. Rolling friction replaces sliding friction, reducing the friction between the surface of the slide plate 12 and the inner wall of the slide 111, reducing the probability that the slide plate 12 will convert kinetic energy into heat energy, thereby ensuring the stability of the slide plate 12 sliding on the inner wall of the slide 111.

[0047] Reference Figure 5 and Figure 6 The inner wall of the heat dissipation arc channel 112 is provided with multiple rotating cavities 114 for the cooling impeller 67 to rotate. The arrangement direction of the rotating cavities 114 is parallel to the length direction of the upper support 11. The cooling impeller 67 rotates on the inner wall of the rotating cavity 114 and drives the outside air to enter the rotating cavity 114 through the heat dissipation arc channel 112. The cooling impeller 67 and the cooling roller 66 correspond one-to-one, and the rotating shaft of the cooling impeller 67 is coaxially fixed on the rotating shaft of the cooling roller 66.

[0048] ReferenceFigure 5 and Figure 6 The upper support 11 is provided with an oil injection channel 115, which is located on the side of the rotating cavity 114 away from the heat dissipation arc channel 112. The cooling piston 61 and the power piston 63 can be made of rubber or silicone. In this embodiment, the cooling piston 61 and the power piston 63 are both made of rubber, which has a certain deformation capability. The cooling piston 61 is slidably connected to the inner wall of the oil injection channel 115. The sliding direction of the cooling piston 61 is parallel to the width direction of the upper support 11. The outer circumferential surface of the cooling piston 61 presses against the circumferential inner wall of the oil injection channel 115 and divides the oil injection channel 115 into two partition sections 1151. A connecting cavity 116 is opened on the inner wall of one of the partition sections 1151, and the connecting cavity 116 connects the two partition sections 1151.

[0049] Reference Figure 5 and Figure 6 When the cooling piston 61 slides on the inner wall of the oil injection channel 115, it pushes the oil in one of the partition sections 1151 through the connecting cavity 116 into the other partition section 1151, pushing the oil in the two partition sections 1151 to flow, so that the oil can fully contact the inner wall of the partition section 1151 and exchange heat, thereby improving the cooling efficiency of the upper support 11.

[0050] Reference Figure 5 and Figure 6 The cooling cam 65 corresponds to the cooling impeller 67 and is fixed on the rotating shaft of the cooling impeller 67. The ends of multiple power pistons 63 are connected at intervals to the surface of the cooling piston 61 facing the rotating cavity 114. The power pistons 63 correspond to the rotating cavities 114. The inner wall of the rotating cavity 114 is opened into the power cavity 117 for the power pistons 63 to slide. The ends of the power pistons 63 away from the cooling pistons 61 pass through the power cavity 117 and face the cooling cam 65. The transmission rollers 64 correspond to the power pistons 63 and are rotatably connected to the surface of the power pistons 63 facing the cooling cam 65. The rotation axis of the transmission rollers 64 and the rotation axis of the cooling impeller 67 are parallel to each other.

[0051] Reference Figure 5 and Figure 6 The elastic element 62 can be a compression spring or a tension spring. In this embodiment, the elastic element 62 is a compression spring with a certain deformation capability. One end of the elastic element 62 in the direction of elastic force is connected to the inner wall of the oil injection channel 115, and the other end of the elastic element 62 in the direction of elastic force is connected to the surface of the cooling piston 61. The elastic element 62 and the transmission piston are located on both sides of the cooling piston 61. The elastic element 62 has the elastic force to drive the cooling piston 61 to slide towards the direction close to the rotating cavity 114, and the transmission roller 64 wheel surface has the tendency to roll contact with the cooling cam 65 wheel surface.

[0052] Reference Figure 5 and Figure 6When the cooling roller 66 drives the cooling impeller 67 to rotate, it drives the cooling cam 65 to rotate. The surface of the cooling cam 65 rolls into contact with the surface of the transmission roller 64. The power piston 63 drives the cooling piston 61 to slide back and forth on the inner wall of the oil injection channel 115, so that the oil in the two partition sections 1151 is exchanged through the connecting cavity 116, which promotes the flow of oil in the partition section 1151, so that the oil is in full contact with the inner wall of the partition section 1151 and heat exchange occurs, thereby improving the cooling efficiency of the upper support 11.

[0053] Reference Figure 5 and Figure 6 A starting assembly 7 is installed on the inner wall of the rotating cavity 114. The starting assembly 7 can control the sliding of the transmission piston on the inner wall of the power cavity 117. The starting assembly 7 includes a thermal expansion and contraction strip 71 and a starting rod 72. The thermal expansion and contraction strip 71 can be made of nylon or shape memory alloy. In this embodiment, the thermal expansion and contraction strip 71 is made of shape memory alloy, which has a certain deformation capacity. A deformation cavity 118 is opened on the inner wall of the power cavity 117 for the thermal expansion and contraction strip 71 to deform. One end of the thermal expansion and contraction strip 71 is fixed to the inner wall of the deformation cavity 118 near the power cavity 117, and the other end of the thermal expansion and contraction strip 71... The starter rod 72 is fixed to the rod surface. The drive piston surface has a starter groove 631 for the starter rod 72 to be inserted. The end face of the starter rod 72 facing the starter groove 631 has a guide surface. The guide surface is arc-shaped and convex. When the thermal expansion and contraction strip 71 cools down and contracts, it pushes the starter rod 72 closer to the drive piston. When the wheel surface of the drive roller 64 abuts against the large end of the cooling cam 65, the guide surface abuts against the surface of the drive piston and guides the end of the starter rod 72 to be inserted into the starter groove 631. The rod surface of the starter rod 72 abuts against the inner wall of the starter groove 631 and restricts the sliding of the power piston 63 on the inner wall of the power chamber 117.

[0054] Reference Figure 5 and Figure 6 Figure 5 Figure 6 Figure 5 Figure 6 When the thermal expansion and contraction strip 71 heats up and expands, pushing the starting rod 72 away from the transmission piston, the end of the starting rod 72 disengages from the starting groove 631. The limiting effect of the starting rod 72 on the power piston 63 disappears, and the elastic element 62 forces the power piston 63 closer to the cooling cam 65. The wheel surface of the transmission roller 64 rolls into contact with the wheel surface of the cooling cam 65, realizing the directional sliding of the cooling piston 61 on the inner wall of the oil injection channel 115, reducing the wear between the transmission roller 64 and the cooling cam 65, thereby extending the service life of the extrusion die.

[0055] The implementation principle of a dual-station prism extrusion die in this application embodiment is as follows: During workpiece processing, the end of the column 8 is embedded in the positioning cavity 21, and the end of the ring 9 is embedded in the sliding cavity 22, thereby limiting the workpiece on the lower template 2. The piston rod of the power cylinder 41 retracts, driving the slide plate 12 to slide along the inner wall of the slide rail 111 towards the positioning block 42. The surface of the positioning block 42 abuts against the surface of the slide plate 12. The axis of the rough punch 13 coincides with the axis of the column 8. The power device drives the upper support 11 to approach the lower template 2, and the upper template 1 and the lower template 2 close. The end of the column 8 protruding from the lower template 2 is aligned with the lower template 2. The shaft is embedded in the limiting cavity 131, and the end of the rough punch 13 is embedded in the mounting ring cavity 91. The stamping ring surface 132 presses the bottom wall of the mounting ring cavity 91 and drives the bottom wall of the mounting ring cavity 91 to form an arc-shaped surface 911, a connecting surface 913, and an arc-shaped surface 912. At the same time, the bottom wall of the mounting ring cavity 91 is pressed by the stamping ring surface 132, which drives the column 8 to slide along the inner wall of the positioning cavity 21 towards the spline punch 3. The spline punch 3 is embedded in the inner cavity of the column 8 and processes the spline teeth on the inner wall of the column 8, realizing the simultaneous stamping of multiple stamping surfaces of the workpiece, thereby improving the processing efficiency of the workpiece; at the same time, the power device drives the upper support The seat 11 moves away from the lower template 2, the end of the punch disengages from the limiting cavity 131, the piston rod of the power cylinder 41 extends, driving the slide plate 12 to slide along the inner wall of the slide rail 111 towards the positioning block 42. The surface of the positioning block 43 abuts against the surface of the slide plate 12. The axis of the precision punch 14 coincides with the axis of the column 8. The power device drives the upper support 11 to approach the lower template 2. The upper template 1 and the lower template 2 close. The end of the column 8 protruding from the lower template 2 is coaxially embedded in the guide cavity 141. The end of the precision punch 14 is embedded in the mounting ring cavity 91. The precision pressing ring surface 142 extrudes the arc surface 911 and the connecting surface 913. The arc-shaped surface 912 drives the connection between the arc-shaped surface 911 and the connecting surface 913 to form edge 914, and the connection between the arc-shaped surface 912 and the connecting surface 913 to form edge 915, thereby realizing the extrusion forming of the workpiece. The curve of the stamping ring surface 132 is smooth without abrupt changes, reducing stress concentration on the stamping ring surface 132. The fine punch 14 stamps the workpiece after it has been stamped by the rough punch 13, avoiding stress concentration on the fine pressing ring surface 142 by the mounting ring cavity 91, ensuring that the fine punch 14 and the rough punch 13 are not easily worn due to stress concentration, thereby improving the service life of the extrusion die.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dual-station prism extrusion die, characterized in that: The system includes an upper template (1) and a lower template (2). The lower template (2) has a positioning cavity (21) on its surface for the end of the column (8) to be inserted. The upper template (1) includes an upper support (11), a sliding plate (12), a coarse punch (13), and a fine punch (14). The sliding plate (12) is slidably connected to the surface of the upper support (11) facing the positioning cavity (21). The coarse punch (13) and the fine punch (14) are spaced apart and connected to the surface of the sliding plate (12). The end face of the coarse punch (13) has a limiting cavity (131) coaxially formed for the column (8) to be inserted. The end face of the coarse punch (13) that abuts against the bottom wall of the mounting ring cavity (91) is provided with a stamping ring surface (132). The stamping ring surface (132) is adapted to the first arc surface (911), the second arc surface (912) and the connecting surface (913). The end face of the fine punch (14) is coaxially provided with a guide cavity (141) for the column (8) to be embedded. The end face of the fine punch (14) that abuts against the bottom wall of the mounting ring cavity (91) is provided with a fine pressing ring surface (142). The fine pressing ring surface (142) is adapted to the first edge (914) and the second edge (915).

2. The dual-station prism extrusion die according to claim 1, characterized in that: The upper support (11) has a slide rail (111) for sliding the slide plate (12). The upper support (11) is connected to a power assembly (4). The power assembly (4) includes a power cylinder (41). The power cylinder (41) is connected to the surface of the upper support (11). The piston rod end of the power cylinder (41) is embedded in the slide rail (111) and connected to the surface of the slide plate (12). The power cylinder (41) drives the slide plate (12) to slide on the inner wall of the slide rail (111).

3. The dual-station prism extrusion die according to claim 2, characterized in that: The power assembly (4) also includes a positioning block one (42) and a positioning block two (43). The positioning block one (42) and the positioning block two (43) are connected one-to-one to the inner walls of the two sides of the slide rail (111) along the length direction. When the piston rod of the power cylinder (41) retracts, the surface of the positioning block one (42) abuts against the surface of the slide plate (12), and the axis of the coarse punch (13) coincides with the axis of the column (8). When the piston rod of the power cylinder (41) extends, the surface of the positioning block two (43) abuts against the surface of the slide plate (12), and the axis of the fine punch (14) coincides with the axis of the column (8).

4. The dual-station prism extrusion die according to claim 1, characterized in that: The inner wall of the positioning cavity (21) is coaxially provided with a sliding cavity (22) for the end of the ring body (9) to be embedded. The inner wall of the sliding cavity (22) abuts against the outer circumferential surface of the ring body (9) to form a positioning. The bottom wall of the positioning cavity (21) is coaxially fixed with a spline punch (3). The spline punch (3) can be embedded into the inner cavity of the column (8) and process the spline teeth on the inner cavity wall of the column (8).

5. The dual-station prism extrusion die according to claim 4, characterized in that: The lower template (2) is connected to an ejector assembly (5), which includes multiple ejector rods (51). The bottom wall of the positioning cavity (21) is provided with multiple ejector cavities (23) for the ejector rods (51) to slide. The multiple ejector cavities (23) are evenly distributed around the axis of the spline punch (3). The sliding direction of the ejector rods (51) is parallel to the axis of the spline punch (3). The lower template (2) is provided with multiple force application cavities (24) on the plate surface away from the upper template (1). The force application cavities (24) correspond one-to-one with the ejector cavities (23) and are connected.

6. The dual-station rib extrusion die according to claim 2, characterized in that: The inner walls of the slides (111) facing each other are provided with heat dissipation arc channels (112), and both ends of the heat dissipation arc channels (112) penetrate through both sides of the upper support (11) in the length direction.

7. The dual-station prism extrusion die according to claim 6, characterized in that: The upper support (11) is connected to a cooling component (6), which includes multiple cooling rollers (66). The multiple cooling rollers (66) are rotatably connected to the inner wall of the slide (111) at intervals, and the wheel surface of the cooling rollers (66) is in rolling contact with the surface of the slide plate (12).

8. The dual-station prism extrusion die according to claim 7, characterized in that: The cooling component (6) also includes multiple cooling impellers (67). The inner wall of the heat dissipation arc channel (112) is provided with multiple rotating cavities (114) for the cooling impellers (67) to rotate. The cooling impellers (67) rotate on the inner wall of the rotating cavities (114) and drive the air flow in the heat dissipation arc channel (112).

9. The dual-station prism extrusion die according to claim 8, characterized in that: The cooling impeller (67) corresponds one-to-one with the cooling roller (66), and the rotating shaft of the cooling roller (66) is coaxially fixed with the rotating shaft of the cooling impeller (67).

10. The dual-station prism extrusion die according to claim 8, characterized in that: The upper support (11) is provided with an oil injection channel (115), and the oil injection channel (115) is located on the side of the rotating cavity (114) away from the heat dissipation arc (112).

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