Preheating furnace for continuous extrusion in copper processing

Abstract

The invention discloses a preheating furnace for continuous extrusion in copper processing, and belongs to the field of copper processing.The preheating furnace for continuous extrusion in copper processing comprises a bearing table, two supporting frames are installed above the bearing table, and the side wall of each supporting frame is rotationally connected with a first rotating shaft; a driving wheel is connected to the peripheral wall of each first rotating shaft, a first mounting plate is connected to the outer wall of each supporting frame, a first motor is mounted above each first mounting plate, and the output end of each first motor is connected with the front end of the corresponding first rotating shaft. The second motor is matched with the belt to drive the rolling wheel to rotate, the copper rod can be driven to synchronously roll in the preheating process, the problem that the local temperature is too high or too low due to the fact that the copper rod is static in the traditional preheating process is effectively solved, the heating uniformity of the copper material is remarkably improved, the consistency of the inner wall structure and plasticity of the copper material can be kept, and the service life of the copper material is prolonged. The stability is improved.

Description

Technical Field

[0001] This invention relates to the field of copper processing technology, and in particular to a preheating furnace for continuous extrusion of copper. Background Technology

[0002] The preheating furnace for continuous extrusion of copper is a key piece of equipment in the continuous extrusion process. It can significantly reduce the room temperature deformation resistance and flow stress of copper, making it easier for the copper to undergo plastic deformation after entering the extruder. This effectively avoids production failures such as extrusion jamming and material breakage caused by excessively hard billets, thereby ensuring the uninterrupted and stable operation of the continuous extrusion production line and greatly increasing the product output per unit time. Secondly, the improved plasticity of copper after preheating can significantly reduce the extrusion pressure and friction on the working surface of the die during the extrusion process, reduce the wear rate of the die and the risk of thermal fatigue damage, and significantly extend the service life of the die.

[0003] If the copper material fails to be heated evenly during the preheating stage of continuous extrusion in copper processing, resulting in localized excessively high or low temperatures, it will directly disrupt the consistency of the inner wall structure and the uniformity of plasticity of the copper material. This can easily lead to processing defects such as cracks, wrinkles, and surface scratches during subsequent extrusion deformation.

[0004] Traditional preheating furnaces are limited by fixed structural dimensions and lack the ability to adapt to copper rods of different diameters. When production needs involve copper rods of various specifications, it is necessary to replace equipment or carry out complex modifications, which is not only cumbersome to operate, but also difficult to efficiently meet diverse production needs. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of uneven heating in the prior art, and to propose a preheating furnace for continuous extrusion of copper processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A preheating furnace for continuous extrusion of copper processing includes a support platform. Two support frames are mounted on the top of the support platform. A first rotating shaft is rotatably connected to the side wall of each support frame. A transmission wheel is connected to the outer peripheral wall of each first rotating shaft. A first mounting plate is connected to the outer wall of each support frame. A first motor is mounted on the top of each first mounting plate. The output end of each first motor is connected to the front end of the first rotating shaft.

[0007] Preferably, two first sliding grooves are provided above the support platform, and a first sliding block is slidably connected to the inner wall of each first sliding groove. Fixed frames are connected to the front and back of the support platform, and a first electric telescopic rod is connected to the side of each of the two fixed frames that is close to each other. The output end of each first electric telescopic rod is connected to the outer wall of the first sliding block, and two second electric telescopic rods are installed above each first sliding block.

[0008] Preferably, each set of the second electric telescopic rods has a connecting block at its output end, and a mounting bracket is connected to one end face of each of the two connecting blocks that are close to each other. Two second rotating shafts are rotatably connected to the inner wall of each mounting bracket, and a roller is connected to the outer wall of each second rotating shaft. The left ends of the two second rotating shafts pass through the mounting bracket and extend to the outer wall of the mounting bracket.

[0009] Preferably, a second mounting plate is connected to one end face of each of the two connecting blocks that are far apart from each other, and a second motor is installed on the outer wall of each of the second mounting plates. A connecting shaft is connected to the outer wall of each of the two second rotating shafts and the output end of the second motor. A belt is connected to the outer wall of each set of connecting shafts for common transmission.

[0010] Preferably, a protective box is installed above the support platform, and through holes are provided on both the left and right outer walls of the protective box, while an electromagnetic heating coil is installed on the inner wall of the protective box.

[0011] Preferably, a support frame is installed above the support platform, and a plurality of third rotating shafts are rotatably connected to the inner wall of the support frame. A conveying roller is connected to the outer wall of each of the third rotating shafts. A third mounting plate is installed on the outer wall of the support frame, and a third motor is installed above the third mounting plate. The front end of one of the third rotating shafts is connected to the output end of the third motor.

[0012] Preferably, a fourth motor is installed above the support platform, the output end of the fourth motor is connected to an electric actuator, the output end of the electric actuator is connected to a support rod, and the end of the support rod away from the electric actuator is connected to a rotating plate.

[0013] Preferably, an electric slide rail is installed at the bottom of the rotating plate, a slider is slidably connected to the outer wall of the electric slide rail, and a connecting plate is connected to the bottom of the slider.

[0014] Preferably, the bottom of the connecting plate is connected to two clamping frames, and the inner wall of each clamping frame is connected to a third electric telescopic rod, and the output end of each third electric telescopic rod is connected to a clamping block.

[0015] Preferably, two second sliding grooves are provided on the upper part of the connecting plate, and a second sliding block is slidably connected to the inner wall of each second sliding groove. A connecting frame is connected above the two second sliding blocks, and the bottom of the two connecting frames is connected to the upper part of the connecting plate. A controller is connected to the outer wall of the support platform.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By using a second motor in conjunction with a belt to drive the rollers to rotate, the copper rods can be rotated synchronously during the preheating process. This effectively avoids the problem of localized excessively high or low temperatures caused by the copper rods remaining stationary in traditional preheating, and significantly improves the uniformity of heating of the copper material. This not only maintains the consistency of the internal structure and plasticity of the copper material, but also reduces the generation of processing defects such as cracks, wrinkles, and surface scratches in subsequent extrusion processes from the source, and greatly improves the surface quality and mechanical property stability of the extruded products.

[0017] 2. By pushing the first sliding block to adjust the distance between the two sets of rollers, and cooperating with the extension and retraction adjustment of the second electric telescopic rod, it can flexibly adapt to copper rods of different diameters. This solves the problem that traditional preheating furnaces are difficult to be compatible with multiple specifications of copper rods due to their fixed structural dimensions. Without replacing equipment or making complex modifications, it can quickly complete the switching of different copper rod specifications. This not only simplifies the operation process and reduces the intensity of manual labor, but also reduces the production downtime caused by equipment replacement, effectively improving the operating efficiency of the production line and its responsiveness to diversified production needs.

[0018] 3. Through the sliding engagement of the second sliding block and the second sliding groove, and relying on the connecting support of the connecting frame, a stable support and precise positioning can be formed for the lower clamping frame. This structural design can effectively counteract the eccentric force caused by uneven force distribution during the clamping of the copper rod, avoiding instability such as tilting and swaying, and ensuring that the clamping frame always maintains a stable working posture, thereby providing reliable structural support for the firm clamping of the copper rod. Attached Figure Description

[0019] Figure 1 This is a front view of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a schematic diagram of the transmission wheel in this invention; Figure 4 This is a schematic diagram of the belt structure in this invention; Figure 5 This is a schematic diagram of the protective box in this invention; Figure 6 This is a schematic diagram of the structure of the conveyor roller in this invention; Figure 7 This is a schematic diagram of the rotating plate in this invention; Figure 8 This is a schematic diagram of the fixture frame in this invention.

[0020] In the diagram: 1. Support platform; 2. Support frame; 3. First rotating shaft; 4. Transmission wheel; 5. First mounting plate; 6. First motor; 7. First sliding groove; 8. First sliding block; 9. Fixing frame; 10. First electric telescopic rod; 11. Second electric telescopic rod; 12. Connecting block; 13. Mounting frame; 14. Second rotating shaft; 15. Roller; 16. Second mounting plate; 17. Second motor; 18. Connecting shaft; 19. Belt; 20. Protective box; 21. Through 21. Hole; 22. Electromagnetic heating coil; 23. Support frame; 24. Third rotating shaft; 25. Conveyor roller; 26. Third mounting plate; 27. Third motor; 28. Fourth motor; 29. ​​Electric push rod; 30. Support rod; 31. Rotating plate; 32. Electric slide rail; 33. Slider; 34. Connecting plate; 35. Fixture frame; 36. Third electric telescopic rod; 37. Clamping block; 38. Second sliding groove; 39. Second sliding block; 40. Connecting frame; 41. Controller. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example, refer to Figure 1-8 A preheating furnace for continuous extrusion of copper processing includes a support platform 1. Two support frames 2 are installed above the support platform 1. A first rotating shaft 3 is rotatably connected to the side wall of each support frame 2. A transmission wheel 4 is connected to the outer peripheral wall of each first rotating shaft 3. The transmission wheel 4 adopts a design with limit rings on both sides. When a first motor 6 drives the first rotating shaft 3 to drive the transmission wheel 4 to rotate and thus transport copper bars, the limit rings on both sides can form a lateral constraint on the copper bars, effectively preventing the copper bars from slipping due to factors such as force offset, vibration or diameter mismatch during the rotation of the transmission wheel 4. This ensures that the copper bars always remain on the conveying trajectory of the transmission wheel 4 and are smoothly and reliably transferred between the two sets of rollers 15, providing a basic guarantee for the smooth connection of the subsequent preheating process. A first mounting plate 5 is connected to the outer wall of each support frame 2. A first motor 6 is installed above each first mounting plate 5. The output end of each first motor 6 is connected to the front end of the first rotating shaft 3.

[0023] Furthermore, two first sliding grooves 7 are provided above the support platform 1. A first sliding block 8 is slidably connected to the inner wall of each first sliding groove 7. Fixed frames 9 are connected to the front and back of the support platform 1. A first electric telescopic rod 10 is connected to the side of the two fixed frames 9 that are close to each other. The output end of each first electric telescopic rod 10 is connected to the outer wall of the first sliding block 8. Two second electric telescopic rods 11 are installed above each first sliding block 8. When the equipment needs to adapt to copper rods of different diameters, the controller 41 controls the first electric telescopic rod 10 to extend and retract, which can directly push the first sliding block 8 to move laterally in the first sliding groove 7. Since the first sliding block 8 is equipped with a mounting bracket 13 for the bearing roller 15, the extension and retraction of the first electric telescopic rod 10 can drive the two sets of rollers 15 to adjust the lateral spacing synchronously, so that the rollers 15 are precisely matched with the diameter of the copper rod, ensuring that the rollers 15 can fit tightly against the surface of the copper rod, providing a stable support and transmission foundation for the subsequent rotation and preheating of the copper rod, effectively solving the problem that traditional equipment is difficult to adapt to copper rods of multiple specifications due to fixed size.

[0024] Furthermore, each set of second electric telescopic rods 11 has a connecting block 12 connected to its output end. The two connecting blocks 12 are connected to a mounting bracket 13 on their close-to-each end faces. The inner wall of each mounting bracket 13 is rotatably connected to two second rotating shafts 14. The outer wall of each second rotating shaft 14 is connected to a roller 15. The left ends of the two second rotating shafts 14 pass through the mounting bracket 13 and extend to the outer wall of the mounting bracket 13.

[0025] Furthermore, each of the two connecting blocks 12 has a second mounting plate 16 connected to one of its opposite ends. A second motor 17 is installed on the outer wall of each second mounting plate 16. A connecting shaft 18 is connected to the outer wall of each of the two second rotating shafts 14 and the output end of the second motor 17. A belt 19 is connected to the outer wall of each set of connecting shafts 18. When the second motor 17 starts, its output end drives the second rotating shaft 14 to rotate through the connecting shaft 18 and the belt 19, thereby driving the roller 15 to rotate synchronously. Since the roller 15 is in close contact with the copper rod, the rotating roller 15 will drive the copper rod to rotate as well. This ensures that during the process of conveying the copper rod into the protective box 20, all parts of the surface can be evenly contacted by the heat source generated by the electromagnetic heating coil 22, effectively avoiding the problem of uneven local temperature caused by the static heating of the copper rod, and providing copper material with uniform temperature for the subsequent extrusion process.

[0026] Furthermore, a protective box 20 is installed above the support platform 1. Through holes 21 are provided on both the left and right outer walls of the protective box 20. An electromagnetic heating coil 22 is installed on the inner wall of the protective box 20. The protective box 20 provides a mounting and protective carrier for the electromagnetic heating coil 22, effectively isolating it from the influence of dust, impurities, and mechanical collisions on the outer wall, preventing damage to the heating element due to external interference, and extending its service life. The protective box 20 is a closed box structure, with through holes 21 only on the left and right outer walls for the copper rod to enter and exit. When the copper rod enters the box through the through holes 21, the enclosed space reduces the heat loss from the electromagnetic heating coil 22 to the outside, forming a localized heat preservation environment. This not only reduces energy consumption but also allows the temperature inside the box to quickly reach the preheating process requirements, significantly improving the heating efficiency of the copper rod.

[0027] Furthermore, a support frame 23 is installed above the support platform 1. Multiple third rotating shafts 24 are rotatably connected to the inner wall of the support frame 23. Each third rotating shaft 24 has a conveying roller 25 connected to its outer wall. A third mounting plate 26 is installed on the outer wall of the support frame 23, and a third motor 27 is installed above the third mounting plate 26. The front end of one of the third rotating shafts 24 is connected to the output end of the third motor 27. Multiple conveying rollers 25 are rotatably connected to the support frame 23 via the third rotating shafts 24, collectively forming a receiving platform for the copper rod. The first conveying roller 25, located at the forefront in the conveying direction, has its third rotating shaft 24 connected to... The output of the third motor 27 on the third mounting plate 26 is directly connected, becoming the power source for the entire conveyor roller group 25. When the preheated copper rod is conveyed to the conveyor roller 25 area by the roller 15, the third motor 27 is started. The third motor 27 directly drives the first conveyor roller 25 to rotate. The rotating first conveyor roller 25 generates conveying power through friction with the bottom of the copper rod, which helps the copper rod to smoothly transition from the first conveyor roller 25 to the remaining conveyor rollers 25. This ensures that the copper rod is evenly placed and temporarily stored on the entire conveyor roller group 25, providing a stable positional basis for the subsequent fixture frame 35 to accurately clamp the copper rod and transfer it to the next process.

[0028] Furthermore, a fourth motor 28 is installed above the support platform 1. The output end of the fourth motor 28 is connected to an electric actuator 29. When the fourth motor 28 drives the rotating plate 31 to rotate directly above the copper rod on the conveyor roller 25, the controller 41 controls the electric actuator 29 to retract. This causes the support rod 30 and the rotating plate 31 to move downwards synchronously, thereby causing the clamping frame 35 below to gradually approach the copper rod until the clamping block 37 reaches a suitable clamping height. The output end of the electric actuator 29 is connected to the support rod 30, and the end of the support rod 30 away from the electric actuator 29 is connected to the rotating plate 29. After the preheated copper rod is temporarily stored on the conveyor roller 25, the fourth motor 28 is started by the controller 41. According to the position of the copper rod on the conveyor roller 25, the fourth motor 28 can drive the rotating plate 31 to rotate directly above the copper rod, so that the clamp frame 35 under the connecting plate 34 is longitudinally aligned with the copper rod. At the same time, when the clamp frame 35 clamps the copper rod and transfers it to the next process, the fourth motor 28 can also adjust the direction again to drive the clamp frame 35 holding the copper rod to the docking position of the subsequent process, so as to realize the transfer of the copper rod from the preheating station to the extrusion station.

[0029] Furthermore, an electric slide rail 32 is installed at the bottom of the rotating plate 31, and a slider 33 is slidably connected to the outer wall of the electric slide rail 32. A connecting plate 34 is connected to the bottom of the slider 33. The electric slide rail 32 is started by the controller 41, which drives the slider 33 to slide laterally along the electric slide rail 32, thereby driving the connecting plate 34 and the clamping frame 35 below to move synchronously, so as to realize the lateral position adjustment of the clamping component.

[0030] Furthermore, the bottom of the connecting plate 34 is connected to two clamping frames 35. Each clamping frame 35 has a third electric telescopic rod 36 connected to its inner wall. The output end of each third electric telescopic rod 36 is connected to a clamping block 37. The third electric telescopic rods 36 are respectively installed on the inner walls of the two clamping frames 35 at the bottom of the connecting plate 34, and their output ends are fixedly connected to the clamping blocks 37. When the fourth motor 28, the electric push rod 29, and the electric slide rail 32 work together to adjust the clamping frame 35 to the corresponding position on the copper rod on the conveying roller 25, the controller 41 controls the extension of the third electric telescopic rod 36, pushing the clamping blocks 37 towards the copper rod until the two clamping blocks 37 tightly adhere to the surface of the copper rod from both sides, achieving a firm clamping of the preheated copper rod and providing reliable clamping force for subsequent transfer to the continuous extrusion process.

[0031] Furthermore, two second sliding grooves 38 are provided above the connecting plate 34. A second sliding block 39 is slidably connected to the inner wall of each second sliding groove 38. A connecting frame 40 is connected above each of the two second sliding blocks 39. The bottoms of the two connecting frames 40 are connected to the top of the connecting plate 34. A controller 41 is connected to the outer wall of the support platform 1. When the third electric telescopic rod 36 drives the clamping block 37 to clamp the copper rod, the clamping frame 35 will tend to tilt and sway due to the force. At this time, the connecting frame 40 can be moved through the second sliding block 38. The cooperation between the moving block 39 and the second sliding groove 38 forms multi-directional limiting and support for the fixture frame 35. The connecting frame 40 can disperse the clamping reaction force borne by the fixture frame 35, avoiding excessive local stress that could lead to structural deformation. On the other hand, its linkage with the second sliding block 39 can limit the offset range of the fixture frame 35, ensuring that the fixture frame 35 always maintains a vertical and stable working posture, thereby ensuring the clamping accuracy of the clamping block 37 on the copper rod, preventing the copper rod from falling off during the transfer process, and providing structural protection for the smooth operation of the unloading process.

[0032] The working principle of this invention is as follows: First, the operator starts the first motor 6 on the first mounting plate 5 via the controller 41. The first motor 6 then drives the first rotating shaft 3 and the transmission wheel 4 to rotate synchronously. The transmission wheel 4 transports the copper rod to be preheated between the two sets of rollers 15. Next, according to the actual diameter of the copper rod, the controller 41 controls the first electric telescopic rod 10 on the fixing frame 9 to extend and retract, pushing the first sliding block 8 to move flexibly within the first sliding groove 7, thereby adjusting the lateral distance between the two sets of rollers 15. At the same time, the controller controls the second electric telescopic rod 11 to extend and retract, driving the mounting frame 13 to rise and fall through the connecting block 12, further adjusting the height of the rollers 15 to ensure that the rollers 15 are in close contact with the surface of the copper rod. Subsequently, the second motor 17 on the second mounting plate 16 is started. The second motor 17 drives the second rotating shaft 14 to rotate through the transmission action of the connecting shaft 18 and the belt 19, thereby driving the rollers 15 to rotate, so that the copper rod is transported into the protective box 20 in a rolling state. When the copper rod enters the box through the through holes 21 on both sides of the protective box 20... After entering, the electromagnetic heating coil 22 on the inner wall of the protective box 20 is activated to heat the rotating copper rod using the principle of electromagnetic induction. Under the continuous drive of the transmission wheel 4, the copper rod is conveyed to the conveyor roller 25 of the support frame 23. At this time, the fourth motor 28 is activated by the controller 41. The fourth motor 28 drives the rotating plate 31 to rotate and adjust it to a position directly above the copper rod on the conveyor roller 25. Then, the electric push rod 29 is controlled to retract, driving the support rod 30 and the rotating plate 31 to move downward synchronously, so that the two below the connecting plate 34... As the clamping frame 35 gradually approaches the copper rod, the electric slide rail 32 is activated, driving the slider 33 to make slight lateral adjustments to ensure precise alignment between the clamping frame 35 and the copper rod. Once the clamping frame 35 reaches the designated clamping position, the third electric telescopic rod 36 extends, pushing the clamping block 37 to firmly clamp the copper rod. During this process, the second sliding block 39 on the connecting plate 34 works in conjunction with the connecting frame 40 within the second sliding groove 38 to provide stable support and limit the clamping frame 35, effectively preventing it from tilting or wobbling due to clamping force. Finally, through the coordinated action of the fourth motor 28, the electric push rod 29, and the electric slide rail 32, the clamping frame 35 smoothly transfers the clamped preheated copper rod to the subsequent continuous extrusion process, completing the entire preheating and unloading process.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A preheating furnace for continuous extrusion of copper processing, comprising a support platform (1), characterized in that, Two support frames (2) are installed above the support platform (1). A first rotating shaft (3) is rotatably connected to the side wall of each support frame (2). A transmission wheel (4) is connected to the outer peripheral wall of each first rotating shaft (3). A first mounting plate (5) is connected to the outer wall of each support frame (2). A first motor (6) is installed above each first mounting plate (5). The output end of each first motor (6) is connected to the front end of the first rotating shaft (3).

2. The preheating furnace for continuous extrusion of copper processing according to claim 1, characterized in that, Two first sliding grooves (7) are provided above the support platform (1). A first sliding block (8) is slidably connected to the inner wall of each first sliding groove (7). A fixed frame (9) is connected to the front and back of the support platform (1). A first electric telescopic rod (10) is connected to the side of the two fixed frames (9) that are close to each other. The output end of each first electric telescopic rod (10) is connected to the outer wall of the first sliding block (8). Two second electric telescopic rods (11) are installed above each first sliding block (8).

3. A preheating furnace for continuous extrusion of copper processing according to claim 2, characterized in that, Each set of the second electric telescopic rods (11) has a connecting block (12) connected to its output end. The two connecting blocks (12) are connected to a mounting bracket (13) on their respective end faces that are close to each other. The inner wall of each mounting bracket (13) is rotatably connected to two second rotating shafts (14). The outer wall of each second rotating shaft (14) is connected to a roller (15). The left ends of the two second rotating shafts (14) pass through the mounting bracket (13) and extend to the outer wall of the mounting bracket (13).

4. A preheating furnace for continuous extrusion of copper processing according to claim 3, characterized in that, Two connecting blocks (12) are connected to a second mounting plate (16) at their opposite ends. A second motor (17) is installed on the outer wall of each second mounting plate (16). A connecting shaft (18) is connected to the outer wall of each of the two second rotating shafts (14) and the output end of the second motor (17). A belt (19) is connected to the outer wall of each set of connecting shafts (18) for common transmission.

5. A preheating furnace for continuous extrusion of copper processing according to claim 1, characterized in that, A protective box (20) is installed above the support platform (1). The left and right outer walls of the protective box (20) are provided with through holes (21), and an electromagnetic heating coil (22) is installed on the inner wall of the protective box (20).

6. A preheating furnace for continuous extrusion of copper processing according to claim 1, characterized in that, A support frame (23) is installed above the support platform (1). Multiple third rotating shafts (24) are rotatably connected to the inner wall of the support frame (23). A conveying roller (25) is connected to the outer wall of each third rotating shaft (24). A third mounting plate (26) is installed on the outer wall of the support frame (23). A third motor (27) is installed above the third mounting plate (26). The front end of one of the third rotating shafts (24) is connected to the output end of the third motor (27).

7. A preheating furnace for continuous extrusion of copper processing according to claim 1, characterized in that, A fourth motor (28) is installed above the support platform (1). The output end of the fourth motor (28) is connected to an electric push rod (29). The output end of the electric push rod (29) is connected to a support rod (30). The end of the support rod (30) away from the electric push rod (29) is connected to a rotating plate (31).

8. A preheating furnace for continuous extrusion of copper processing according to claim 7, characterized in that, An electric slide rail (32) is installed at the bottom of the rotating plate (31), and a slider (33) is slidably connected to the outer wall of the electric slide rail (32). A connecting plate (34) is connected to the bottom of the slider (33).

9. A preheating furnace for continuous extrusion of copper processing according to claim 8, characterized in that, The bottom of the connecting plate (34) is connected to two clamping frames (35), and the inner wall of each clamping frame (35) is connected to a third electric telescopic rod (36), and the output end of each third electric telescopic rod (36) is connected to a clamping block (37).

10. A preheating furnace for continuous extrusion of copper processing according to claim 8, characterized in that, Two second sliding grooves (38) are provided above the connecting plate (34). A second sliding block (39) is slidably connected to the inner wall of each second sliding groove (38). A connecting frame (40) is connected above the two second sliding blocks (39). The bottom of the two connecting frames (40) is connected to the top of the connecting plate (34). A controller (41) is connected to the outer wall of the support platform (1).

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