Drawing equipment and drawing method for non-ferrous metal and alloy thereof

Abstract

The invention provides non-ferrous metal and alloy drawing equipment and a drawing method.The device comprises an extrusion preheating device arranged between a blank discharging device and a drawing device, the extrusion preheating device comprises a supporting table, the supporting table is provided with an arc-shaped groove and a transverse through groove, and the arc-shaped groove is communicated with the transverse through groove; a material stopping block and an extrusion die are arranged on the supporting table close to the starting end of the transverse through groove, and the extrusion die is connected to the bottom of the material stopping block; the extrusion wheel is rotationally connected to the supporting table, a groove is formed in the extrusion wheel and matched with the blank, and the blank wound on the extrusion wheel penetrates out of the channel after being pressed by the extrusion die; the temperature measuring device is arranged on the peripheral wall of the starting end of the transverse through groove. The traction assembly comprises a first guide rail, a tensioning assembly, a second guide rail and a traction machine which are sequentially arranged, and the traction machine is arranged on the second guide rail. The invention further provides a drawing method of the drawing equipment for the non-ferrous metal and the alloy of the non-ferrous metal. According to the drawing equipment, the grain size of a heated blank can be reduced, and the technological process can be shortened.

Description

Technical Field

[0001] The invention relates to the technical field of metal material processing, in particular to a drawing device and a drawing method for nonferrous metals and alloys thereof. Background Art

[0002] Metal drawing refers to a plastic processing method in which a metal blank is forced through a die hole under the action of an external force to obtain a product of corresponding shape and size. It has the advantages of high dimensional accuracy, high surface finish, simple equipment, and easy maintenance, and is widely used in industrial production.

[0003] However, when producing metals with poor plasticity and high degree of work hardening, greater pulling force is required to continue drawing, and surface cracks are easily generated, affecting the surface quality of the product and causing a high wire breakage rate. Therefore, the blank needs to be preheated during drawing to reduce deformation resistance and facilitate subsequent drawing deformation.

[0004] Although the currently used drawing equipment can obtain products of corresponding shapes and sizes, the yield rate of the blanks prepared by the existing drawing equipment is not high. This is because the heat treatment furnace and the drawing parts in the existing drawing equipment cannot be synchronized when processing the blanks. Before drawing, the blanks need to be sent to the heat treatment furnace for preheating at a certain temperature for a certain period of time. After heat treatment, the grain size is coarse, which affects the subsequent drawing. In addition, the preheating process of the heat treatment furnace has high requirements, complex processes, and long processes, which also limit production efficiency. Therefore, it is of great significance to design a drawing equipment and a drawing method for non-ferrous metals and their alloys that can reduce the grain size of the heated blanks and shorten the process. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a drawing equipment and a drawing method for non-ferrous metals and their alloys, which utilize deformation heat for preheating, thereby eliminating the need for long-term insulation preheating in a heat treatment furnace before drawing the billet, and achieving simultaneous preheating and drawing, with a short process, energy conservation and emission reduction, and greatly improved production efficiency; at the same time, deformation can refine the grains, avoiding coarse grains caused by preheating of the billet in the furnace, which is beneficial to subsequent drawing deformation, greatly improving the yield rate, and can be applied to the preheating and drawing of bars, wires, silk, pipes and profiles.

[0006] In order to solve the above technical problems, the first implementation scheme provided by the present invention is to provide a drawing device for non-ferrous metals and their alloys, comprising a billet discharge device and a drawing device, wherein an extrusion preheating device is provided between the billet discharge device and the drawing device, wherein the extrusion preheating device comprises:

[0007] A support platform, wherein the support platform is provided with an arc groove and a transverse through groove, wherein the arc groove is connected with the transverse through groove, and a stopper block and an extrusion die are provided on the support platform near the starting end of the transverse through groove, wherein the extrusion die is provided at the bottom of the stopper block, and wherein the die extrusion cavity of the extrusion die is connected with the transverse through groove;

[0008] An extrusion wheel is rotatably connected to the support platform, and a groove is provided on the extrusion wheel, and the groove matches the blank delivered by the blank discharge device. The blank wound on the extrusion wheel is stopped by a blocking block and turned to be sent into the extrusion die for extrusion preheating treatment, and the drawing device is connected to the processed blank delivered by the transverse through groove;

[0009] The temperature measuring device is arranged on the outer peripheral wall at the starting end of the transverse through slot and is used to detect the temperature of the blank entering the transverse through slot after extrusion preheating treatment.

[0010] Preferably, the transverse through groove is circular, and a concave cavity is provided on the inner peripheral wall of the transverse through groove near the starting end of the transverse through groove, and the temperature measuring device is arranged in the concave cavity.

[0011] Preferably, the extrusion die matches the size of the blank, and the extrusion die includes a rectangular die shell and a die extrusion cavity, the rectangular die shell is arranged at the bottom of the stop block, the die extrusion cavity is arranged in the rectangular die shell, and the die extrusion cavity is a center-shaped through groove, and the die extrusion cavity has a corner extrusion zone, an extended extrusion zone and a forward extrusion zone, the corner extrusion zone is located at the top of the center-shaped through groove, the extended extrusion zone is located in the middle of the center-shaped through groove, and the forward extrusion zone is located at the bottom of the center-shaped through groove, and the center-shaped through groove is respectively connected to the arc groove and the transverse through groove.

[0012] Preferably, the extrusion die is made of tool steel, alloy steel or hard metal alloy that is resistant to high temperatures and thermal fatigue.

[0013] Preferably, a pulling assembly is further provided between the pulling device and the transverse through groove, the pulling assembly comprising a casing, a first guide rail and a second guide rail being symmetrically provided along a vertical axis outside the casing, a traction machine being slidably provided on the second guide rail in a horizontal direction, the traction machine being connected to the pulling device, a tensioning assembly being provided inside the casing, the tensioning assembly comprising a first position-limiting guide wheel group, a tension wheel group and a second position-limiting guide wheel group, a first position-limiting guide wheel group guide rail, two tension wheel group guide rails arranged in parallel and a second position-limiting guide wheel group guide rail are also vertically provided in sequence inside the casing, the first position-limiting guide wheel group being symmetrically provided along a vertical axis outside the casing, a traction machine being slidably provided on the second guide rail in a horizontal direction, the traction machine being connected to the pulling device, a tensioning assembly being provided inside the casing It slides vertically on the guide rail of the first limiting guide wheel group, and the center line of the first limiting guide wheel group coincides with the center line of the guide rail. The tension wheel group consists of two tension wheels, and the two tension wheels are respectively arranged on the two tension wheel group guide rails and slide vertically. There is a height difference between the two tension wheels. The first limiting guide wheel group and the second limiting guide wheel group are located in the same horizontal plane, and the second limiting guide wheel group slides vertically on the guide rail of the second limiting guide wheel group. The blank fed into the first limiting guide wheel group through the guide rail is wound around the two tension wheels, and then pulled by the second limiting guide wheel group and sent out through the traction machine into the drawing device.

[0014] Preferably, the drawing device is a hydraulic drawing machine, the drawing device is connected to a cooling and cleaning device, and the cooling and cleaning device is connected to a winding device via a third limiting guide wheel set, so as to allow the product delivered by the cooling and cleaning device to be wound on the winding device.

[0015] Preferably, a straightening device is further provided between the billet discharge device and the extrusion wheel, the billet discharged by the billet discharge device passes through the straightening device and is fed into the groove of the extrusion wheel, and the straightening device is a roller straightening wheel.

[0016] Preferably, the blank unloading device comprises a fixed frame, a tray and a pay-off frame, the tray and the pay-off frame are both arranged on the fixed frame, the lower end of the fixed frame is fixed to the ground, the tray is rotatably connected to the pay-off frame, and the blank is wound on the tray.

[0017] The second invention object of the present invention is to provide a drawing method of a drawing device for non-ferrous metals and their alloys, comprising the following steps:

[0018] Discharging the blank through the blank discharging device;

[0019] The blank is fed into the groove of the extrusion wheel of the extrusion preheating device with the rotation speed adjusted in advance. The rotation of the extrusion wheel drives the blank to move forward and begin to deform. The extrusion direction changes at the stop block, and the temperature can be measured in real time through the temperature measuring device. Finally, the extrusion preheating treatment is completed through the extrusion die;

[0020] After preheat treatment, the blank passes through the first guide rail, the second guide rail of the tensioning assembly and the traction machine at the transverse groove. After being pulled by the tensioning assembly and the traction machine, the blank is limited and guided and the tension is adjusted, and finally introduced into the drawing device for processing.

[0021] Preferably, the extrusion wheel rotates at a speed of 5 rad / min to 20 rad / min.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The drawing equipment for nonferrous metals and their alloys provided by the present invention replaces the conventional heat treatment furnace heating, eliminates the long-term insulation waiting time for preheating in the heat treatment furnace before drawing the billet, realizes the simultaneous preheating and drawing, shortens the process, saves energy and reduces emissions, and greatly improves production efficiency.

[0024] During the preheating process of the extrusion preheating device, the alloy wound on the extrusion wheel undergoes multi-stage shear deformation after being blocked by the material block and then sent into the extrusion die again. The friction heat and deformation heat generated in this process can quickly increase the temperature of the alloy, without the need for external heat source to heat it, saving energy and reducing emissions; at the same time, the grain structure inside the alloy undergoes recrystallization during the deformation process, and the grains are significantly refined to form fine equiaxed grains, eliminating the strict and cumbersome preheating treatment system, avoiding the coarse grains caused by preheating of the billet in the furnace, and detecting the temperature of the billet entering the transverse through slot after the extrusion preheating treatment through the temperature measuring device, which is conducive to subsequent drawing deformation and greatly improves the yield rate. At the same time, it can make the alloy more evenly disperse the stress when it is subjected to force during the subsequent deformation process, thereby improving the plasticity, toughness and forming properties, and can also reduce the brittleness of the alloy and improve its fatigue resistance and corrosion resistance.

[0025] During the heating process in a conventional heat treatment furnace, the alloy often needs to be heated for a long time. The heating process causes the grain boundary migration rate of the alloy to increase significantly, which will inevitably cause the grains to grow and coarsen. The coarsened grains are extremely detrimental to the forming properties of the alloy, and often cause the alloy to be broken during the drawing process, resulting in interruption of the drawing process and reduced production efficiency.

[0026] The invention can be applied to the preheating drawing of rods, wires, filaments, pipes and profiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The invention discloses a structural schematic diagram of a drawing device for nonferrous metals and their alloys.

[0028] Figure 2 The present invention is a schematic diagram of an extrusion die for nonferrous metal and alloy drawing equipment.

[0029] Figure 3It is a schematic diagram of the metallographic structure of the 5A06 alloy product prepared by the equipment and method of the present invention.

[0030] Figure 4 It is a schematic diagram of the metallographic structure of 5A06 alloy products prepared by existing equipment and methods.

[0031] Description of reference numerals:

[0032] 1. Fixed frame; 2. Tray; 3. Pay-off frame; 4. Blank; 5. Straightening device; 6. Extrusion preheating device; 7. Extrusion wheel; 8. Support table; 9. Stop block; 10. Extrusion die; 11. Temperature measuring device; 12. First guide rail; 13. First limit guide wheel group guide rail; 14. Tension wheel group guide rail; 15. Tension wheel group; 16. Second limit guide wheel group 1; 17. Tractor; 18. Drawing device; 19. Cooling and cleaning device; 20. Product; 21. Third limit guide wheel group; 22. Winding device, 23 rectangular die shell, 24. Corner extrusion zone, 25. Extended extrusion zone, 26. Forward extrusion zone. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The inventors found that placing the blank into a heat treatment furnace will increase the size of the blank grains, which is not conducive to subsequent drawing deformation. This is because: temperature is one of the main factors affecting grain growth. The long-term heat preservation of the blank at high temperature in the heat treatment furnace will increase the diffusion rate of the grain boundary and promote the growth of the grains inside the blank. The factors that affect the growth of the grains inside the blank are:

[0035] The finer the grains, the higher the strength and toughness of the alloy, and the better the formability. This is because fine grains can provide more grain boundaries, which can hinder the expansion of cracks and facilitate uniform deformation of the alloy, thereby improving the strength and plastic toughness of the material. On the contrary, coarse grains make the alloy more prone to uneven deformation and cracking when subjected to force, which deteriorates the formability of the alloy. Therefore, coarse grains are not conducive to uniform deformation and strength maintenance of the alloy, and the poor formability of the alloy often causes the alloy to be broken during the drawing process, resulting in interruption of the drawing process and reduced production efficiency.

[0036] In view of this, the present invention utilizes deformation heat for preheating, eliminating the need for long-term insulation preheating in a heat treatment furnace before drawing the billet, and realizing simultaneous preheating and drawing, with a short process, energy saving and emission reduction, and greatly improved production efficiency; at the same time, deformation can refine the grains, avoiding coarse grains caused by preheating of the billet in the furnace, which is beneficial to subsequent drawing deformation, greatly improving the yield rate, and can be applied to the preheating and drawing of rods, wires, silk, pipes and profiles.

[0037] like Figure 1 to Figure 4 As shown, the present invention provides a drawing device for non-ferrous metals and alloys thereof, comprising a blank discharge device and a drawing device 18, wherein an extrusion preheating device 6 is provided between the blank discharge device and the drawing device 18, wherein the extrusion preheating device 6 comprises:

[0038] A support platform 8, wherein the support platform 8 is provided with an arc groove and a transverse through groove, wherein the arc groove is connected to the transverse through groove, and a stopper block 9 and an extrusion die 10 are provided on the support platform 8 near the starting end of the transverse through groove, wherein the extrusion die 10 is provided at the bottom of the stopper block 9, and the extrusion die 10 has a die extrusion cavity connected to the transverse through groove;

[0039] The extrusion wheel 7 is rotatably connected to the support platform 8, and a groove is provided on the extrusion wheel 7, and the groove matches the blank 4 conveyed by the blank discharge device. The blank wound on the extrusion wheel 7 is stopped by the stop block 9 and sent to the extrusion die 10 for extrusion preheating treatment. The drawing device 18 is connected to the processed blank sent out by the transverse through groove;

[0040] The temperature measuring device 11 is arranged on the outer peripheral wall at the starting end of the transverse through slot and is used to detect the temperature of the blank entering the transverse through slot after extrusion preheating treatment.

[0041] Specifically, the transverse through groove is circular, and a concave cavity is opened on the inner peripheral wall of the transverse through groove near the starting end of the transverse through groove, and the temperature measuring device 11 is arranged in the concave cavity.

[0042] Specifically, the extrusion die 10 matches the size of the blank, and the extrusion die 10 includes a rectangular die shell 23 and a die extrusion cavity. The rectangular die shell 23 is arranged at the bottom of the blocking block 9, and the die extrusion cavity is arranged in the rectangular die shell 23, and the die extrusion cavity is a center-shaped through groove, and the die extrusion cavity has a corner extrusion zone 24, an extended extrusion zone 25 and a forward extrusion zone 26. The corner extrusion zone 24 is located at the top of the center-shaped through groove, the extended extrusion zone 25 is located in the middle of the center-shaped through groove, and the forward extrusion zone 26 is located at the bottom of the center-shaped through groove, and the center-shaped through groove connects the arc groove and the transverse through groove respectively.

[0043] The die extrusion cavity inside the extrusion die 10 is a Chinese-character through groove, and one end of the Chinese-character through groove is connected to the arc groove, which is convenient for the rapid introduction of the billet from the corner extrusion zone 24. The introduced billet is sent from the corner extrusion zone 24 to the expansion extrusion zone 25, and the expansion extrusion zone 25 is expanded and extruded and deformed, and then sent to the forward extrusion zone 26. The through groove at the forward extrusion zone 26 is a circular through groove, which is smaller than the billet diameter. The billet is extruded and deformed at this location. The high friction shearing effect during the deformation process causes a large amount of friction heat and billet deformation heat, thereby increasing the temperature during the billet deformation process. No external heat source is required to heat it, which saves energy and reduces emissions. At the same time, the grain structure inside the alloy undergoes recrystallization during the deformation process, and the grains are significantly refined to form fine equiaxed grains, eliminating the strict and cumbersome preheating treatment system, avoiding the coarse grains caused by preheating of the billet in the furnace, which is beneficial to subsequent drawing deformation and greatly improves the yield rate.

[0044] Specifically, the extrusion die 10 is made of tool steel, alloy steel or hard metal alloy that is resistant to high temperature and thermal fatigue.

[0045] Specifically, a pulling assembly is provided between the drawing device 18 and the transverse through groove. The main function of the pulling assembly here is to match the extrusion speed of the material passing through the extrusion preheating device with the speed of the drawing device for dynamic adjustment; at the same time, the material is pre-deformed to further introduce dislocations, which is beneficial to the dynamic recrystallization of the material during the drawing process, and is beneficial to the structure of the material after drawing to be more uniform and fine, reducing the occurrence of wire breakage during the drawing process, and improving the yield rate and production efficiency.

[0046] The pulling assembly includes a casing, and a first guide rail 12 and a second guide rail are symmetrically arranged along a vertical axis outside the casing. A traction machine 17 slides horizontally on the second guide rail, and the traction machine 17 is connected to a pulling device 18. A tensioning assembly is arranged inside the casing, and the tensioning assembly includes a first limit guide wheel group, a tension wheel group 15, and a second limit guide wheel group 16. A first limit guide wheel group guide rail 13, two parallel tension wheel group guide rails 14, and a second limit guide wheel group guide rail are also vertically arranged in sequence inside the casing. The first limit guide wheel group is arranged vertically on the first limit guide wheel group guide rail 1 3 slides, and the center line of the first limit guide wheel group coincides with the center line of the guide rail 12, the tension wheel group 15 is two tension wheels, and the two tension wheels are respectively arranged on the two tension wheel group guide rails 14 and slide vertically, and there is a height difference between the two tension wheels, the first limit guide wheel group and the second limit guide wheel group 16 are located in the same horizontal plane, and the second limit guide wheel group 16 slides vertically on the second limit guide wheel group guide rail, the blank fed into the first limit guide wheel group through the guide rail 12 is wound around the two tension wheels, and then pulled by the second limit guide wheel group 16 and sent out through the traction machine 17 into the drawing device 18. The traction machine 17 introduces the wire into the drawing device 18 by horizontal movement.

[0047] The main purpose is to provide tension to the wire during movement, adjust the extrusion speed of the extrusion equipment to match the drawing speed of the drawing machine, and also provide reaction time when problems such as wire breakage occur during the drawing process to improve production efficiency.

[0048] Specifically, the drawing device 18 is a hydraulic drawing machine, and the drawing device 18 is connected to a cooling and cleaning device 19 . The cooling and cleaning device 19 is connected to a winding device 22 via a third limiting guide wheel set 21 , so as to allow the product 20 delivered by the cooling and cleaning device 19 to be wound on the winding device 22 .

[0049] Specifically, a straightening device 5 is further provided between the billet discharge device and the extrusion wheel 7. The billet discharged by the billet discharge device passes through the straightening device 5 and is fed into the groove of the extrusion wheel 7. The straightening device 5 is a roller straightening wheel.

[0050] There are two points to consider here. The first is to straighten the blank to facilitate its introduction into the subsequent wheel groove for deformation. The second is to remove impurities such as dirt and oil on the surface of the blank after straightening to prevent inclusions from being involved during the deformation process and improve product quality.

[0051] Specifically, the blank unloading device includes a fixed frame 1, a tray 2 and a pay-off frame 3. The tray 2 and the pay-off frame 3 are both arranged on the fixed frame 1. The lower end of the fixed frame 1 is fixed to the ground. The tray 2 is rotatably connected to the pay-off frame 3, and the blank is wound on the tray 2.

[0052] A drawing method for a drawing device of non-ferrous metals and alloys thereof, comprising the following steps:

[0053] Discharging the blank through the blank discharging device;

[0054] The blank is fed into the groove of the extrusion wheel 7 of the extrusion preheating device 6 with the rotation speed adjusted in advance. The rotation of the extrusion wheel 7 drives the blank to move forward and begin to deform. The extrusion direction is changed at the stop block 9, and the temperature can be measured in real time by the temperature measuring device 11. Finally, the extrusion preheating treatment is completed by the extrusion die 10;

[0055] The preheated blank is sent out at the transverse through groove, and the sent out preheated blank is drawn in the drawing device 18 .

[0056] Since a pulling assembly is provided between the drawing device 18 and the transverse through slot, the preheated blank passes through the first guide rail 12, the second guide rail of the tensioning assembly and the traction machine 17 at the transverse through slot, and after being pulled by the tensioning assembly and the traction machine 17, the blank is guided and tension is adjusted, and finally introduced into the drawing device 18 for processing.

[0057] Specifically, the extrusion wheel 7 rotates at a speed of 5 rad / min to 20 rad / min.

[0058] The speed of the extrusion wheel is set to 5rad / min to 20rad / min. As the speed of the extrusion wheel increases, the friction heat and deformation heat generated by the billet during the extrusion process increase, and the billet temperature increases.

[0059] As the speed increases, the deformation rate increases, and the friction heat and deformation heat generated increase. However, too high an extrusion speed will lead to deformation instability and poor surface quality of the extruded product. Therefore, the extrusion wheel speed is set to 5rad / min~20rad / min based on comprehensive considerations.

[0060] Example

[0061] Based on the above device, the present invention also provides a method for drawing non-ferrous metals and their alloys. The parameters of the device used in this method are: the billet coil uses 5A06 aluminum alloy with a diameter of 6 mm, the extrusion wheel speed is 5r / min, the extrusion die uses a 6mm solid rod extrusion die, and the drawing machine is equipped with a 5mm drawing die.

[0062] The specific method includes the following steps:

[0063] (1) Billet release and straightening treatment: The 5A06 aluminum alloy billet is rolled and fixed on a tray on a pay-off rack, and the pay-off rack is rotated horizontally to release the 5A06 aluminum alloy billet and enter the straightening device for straightening treatment;

[0064] (2) Extrusion preheating treatment: The straightened 5A06 aluminum alloy billet is fed into the circular annular groove on the surface of the extrusion wheel of the extrusion preheating device with a pre-adjusted speed of 5 r / min. The rotation of the extrusion wheel drives the billet to move forward and begin to deform. The extrusion direction changes at the stop block. At this time, the temperature measured by the temperature measuring device is 300°C. Finally, the extrusion preheating treatment is completed through an extrusion die with a diameter of 6 mm.

[0065] (3) Drawing process: After the preheating treatment, the 5A06 aluminum alloy billet continues to move forward through the traction machine at the exit of the extrusion preheating device. After passing through the tension wheel group and the limit guide wheel group, the positions of the two wheel groups are adjusted to approach the billet, and the limit guide and tension adjustment of the 5A06 aluminum alloy billet are completed. Finally, it is introduced into the drawing machine to complete the drawing process;

[0066] (4) Cooling, cleaning and coiling: The 5A06 aluminum alloy billet is drawn through a drawing die with a diameter of 5 mm. After drawing, the 5A06 aluminum alloy billet is cooled and cleaned by a cooling tilting device. Finally, the product is collected into a coil by a coiling device through a limiting guide wheel.

[0067] Product metallographic structure Figure 2As shown, compared with the existing method of preparing 5A06 aluminum alloy wire with a diameter of 5 mm by preheating at 300°C in a heat treatment furnace for 0.5 h and then drawing and deforming ( Figure 3 ) and the wire prepared by the present invention, the 5A06 aluminum alloy wire prepared by the present invention has finer grains, greatly improves the mechanical properties of the product, is beneficial to the subsequent deformation of the product, and the surface of the prepared product is smoother and has no cracks.

[0068] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A drawing device for non-ferrous metals and alloys thereof, comprising a blank discharge device and a drawing device (18), characterized in that: An extrusion preheating device (6) is provided between the billet discharge device and the drawing device (18), wherein the extrusion preheating device (6) comprises: A support platform (8), the support platform (8) is provided with an arc groove and a transverse through groove, the arc groove is connected with the transverse through groove, a stopper block (9) and an extrusion die (10) are provided on the support platform (8) near the starting end of the transverse through groove, the extrusion die (10) is arranged at the bottom of the stopper block (9), and the extrusion die (10) has a die extrusion cavity connected with the transverse through groove; An extrusion wheel (7) is rotatably connected to a support platform (8), and a groove is formed on the extrusion wheel (7), wherein the groove matches the blank (4) conveyed by the blank discharge device, and the blank wound on the extrusion wheel (7) is diverted by a blocking block (9) and sent into an extrusion die (10) for extrusion preheating treatment, and the drawing device (18) is connected to the processed blank sent out by the transverse through groove; The temperature measuring device (11) is arranged on the outer peripheral wall at the starting end of the transverse through slot and is used to detect the temperature of the blank entering the transverse through slot after extrusion preheating treatment.

2. The drawing equipment for nonferrous metals and their alloys according to claim 1, characterized in that: The transverse through groove is circular, and a concave cavity is provided on the inner peripheral wall of the transverse through groove near the starting end of the transverse through groove, and the temperature measuring device (11) is arranged in the concave cavity.

3. The drawing equipment for non-ferrous metals and their alloys according to claim 1, characterized in that: The extrusion die (10) matches the size of the blank. The extrusion die (10) comprises a rectangular die shell (23) and a die extrusion cavity. The rectangular die shell (23) is arranged at the bottom of the blocking block (9). The die extrusion cavity is arranged in the rectangular die shell (23). The die extrusion cavity is a Chinese character "Z"-shaped through groove. The die extrusion cavity has a corner extrusion area (24), an extended extrusion area (25) and a forward extrusion area (26). The corner extrusion area (24) is located at the top of the Chinese character "Z"-shaped through groove. The extended extrusion area (25) is located in the middle of the Chinese character "Z"-shaped through groove. The forward extrusion area (26) is located at the bottom of the Chinese character "Z"-shaped through groove. The Chinese character "Z"-shaped through groove is connected to the arc groove and the transverse through groove respectively.

4. The drawing equipment for nonferrous metals and alloys thereof according to claim 3, characterized in that: The extrusion die (10) is made of tool steel, alloy steel or hard metal alloy that is resistant to high temperatures and thermal fatigue.

5. The drawing equipment for nonferrous metals and alloys thereof according to claim 1, characterized in that: A pulling assembly is also provided between the pulling device (18) and the transverse through groove, the pulling assembly comprising a casing, a first guide rail (12) and a second guide rail are symmetrically provided outside the casing along a vertical axis, a traction machine (17) is slidably provided on the second guide rail in a horizontal direction, the traction machine (17) is connected to the pulling device (18), a tensioning assembly is provided inside the casing, the tensioning assembly comprises a first limit guide wheel group, a tension wheel group (15) and a second limit guide wheel group (16), a first limit guide wheel group guide rail (13), two tension wheel group guide rails (14) arranged in parallel and a second limit guide wheel group guide rail are also provided in the casing in sequence along the vertical direction, the first limit guide wheel group is arranged along the vertical direction at the first limit guide wheel group. A guide rail (13) of a limiting guide wheel group slides, and the center line of the first limiting guide wheel group coincides with the center line of the guide rail (12); the tension wheel group (15) comprises two tension wheels, and the two tension wheels are respectively arranged on two tension wheel group guide rails (14) and slide vertically, and there is a height difference between the two tension wheels; the first limiting guide wheel group and the second limiting guide wheel group (16) are located on the same horizontal plane, and the second limiting guide wheel group (16) slides vertically on the guide rail of the second limiting guide wheel group; the blank fed into the first limiting guide wheel group through the guide rail (12) is wound around the two tension wheels, and then pulled by the second limiting guide wheel group (16) and fed into the drawing device (18) through the traction machine (17).

6. The drawing equipment for nonferrous metals and alloys thereof according to claim 1, characterized in that: The drawing device (18) is a hydraulic drawing machine. The drawing device (18) is connected to a cooling and cleaning device (19). The cooling and cleaning device (19) is connected to a winding device (22) via a third limiting guide wheel group (21) so as to allow the product (20) delivered by the cooling and cleaning device (19) to be wound on the winding device (22).

7. The drawing equipment for nonferrous metals and alloys thereof according to claim 1, characterized in that: A straightening device (5) is also provided between the blank discharge device and the extrusion wheel (7). The blank discharged by the blank discharge device passes through the straightening device (5) and is fed into the groove of the extrusion wheel (7). The straightening device (5) is a roller straightening wheel.

8. The drawing equipment for nonferrous metals and alloys thereof according to claim 7, characterized in that: The extrusion wheel (7) rotates at a speed of 5 rad / min to 20 rad / min.

9. The drawing equipment for nonferrous metals and alloys thereof according to claim 1, characterized in that: The blank unloading device comprises a fixed frame (1), a tray (2) and a pay-off frame (3); the tray (2) and the pay-off frame (3) are both arranged on the fixed frame (1); the lower end of the fixed frame (1) is fixed to the ground; the tray (2) is rotatably connected to the pay-off frame (3); and the blank is wound on the tray (2).

10. The drawing method of a drawing device for non-ferrous metals and alloys thereof according to claim 1, characterized in that: The steps include: Discharging the blank through the blank discharging device; The blank is fed into the groove of the extrusion wheel (7) of the extrusion preheating device (6) whose rotation speed is adjusted in advance. The rotation of the extrusion wheel (7) drives the blank to move forward and begin to deform. The extrusion direction is changed at the stop block (9). The temperature can be measured in real time by the temperature measuring device (11). Finally, the extrusion preheating treatment is completed by the extrusion die (10); The preheated blank is sent out at the transverse through groove, and the sent out preheated blank is drawn in a drawing device (18).

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