Energy-saving heat pipe sintering furnace and sintering method thereof

Abstract

The present invention relates to an energy-saving heat pipe sintering furnace and a sintering method thereof. The heat pipe comprises a magnetic core rod, a copper powder layer and a copper pipe which are sequentially arranged from the inside to the outside. The heat pipe is placed on a carrier, and the carrier is placed in a sintering furnace. The magnetic core rod is heated by an electromagnetic heating coil. After the magnetic core rod generates heat, the heat is transferred to the copper powder layer, so that the copper powder layer softens. Electromagnetic heating is a direct heating method. Compared with traditional resistance heating, it has a higher power utilization rate, can reduce energy consumption, and has a higher heating efficiency. In addition, since the magnetic core rod is in direct contact with the copper powder layer, the heat generated by the magnetic core rod can be quickly transferred to the copper powder layer, so that the heating efficiency of the copper powder layer is further improved; and the magnetic core rod is located inside the copper powder layer, and the heat is transmitted from the inside to the outside, which can reduce heat loss, further improve heat utilization, and reduce energy consumption.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering, in particular to an energy-saving heat pipe sintering furnace and a sintering method thereof. Background Art

[0002] Heat pipe is a commonly used heat transfer element, generally used for heat dissipation of electronic equipment. Sintered heat pipe is a common heat pipe. When preparing, a core rod coaxial with the copper tube is first set inside the copper tube, with a gap between the core rod and the inner wall of the copper tube, and then copper powder is filled into the gap. Then the copper tube and the core rod are put into a sintering furnace for sintering. The sintering temperature is about 900℃ (slightly lower than the melting point of copper), so that the copper powder inside the copper tube softens and adheres to each other to form a stable capillary structure layer, and then the core rod is pulled out. Existing sintering furnaces are usually heated by fuel combustion or resistance heating, and have high energy consumption.

[0003] Electromagnetic heating is a more efficient and energy-saving heating method, but it can only heat magnetic objects. The better the magnetic conductivity, the higher the heating efficiency. Since copper tubes, copper powder, etc. are not magnetic, there is currently no sintering furnace specifically for electromagnetic heating of heat pipes. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an energy-saving heat pipe sintering furnace and a sintering method thereof, which adopts electromagnetic heating to heat the copper heat pipe, thereby improving the heating efficiency and reducing the energy consumption.

[0005] To solve the above problems, the technical solution adopted by the present invention is: an energy-saving heat pipe sintering method, wherein the heat pipe includes a magnetic core rod, a copper powder layer and a copper tube arranged in sequence from the inside to the outside, the heat pipe is placed on a carrier, the carrier is placed in a sintering furnace, and the magnetic core rod is heated by an electromagnetic heating coil. After the magnetic core rod generates heat, the heat is transferred to the copper powder layer, so that the copper powder layer is softened.

[0006] An energy-saving heat pipe sintering furnace comprises a furnace body, a furnace door which can be opened and closed is provided on the side wall of the furnace body, an insulating heat preservation sleeve which is vertically arranged is provided in the furnace body, a coil is wound around the outer wall of the insulating heat preservation sleeve, the coil is connected to a power supply device, a magnetic shielding sleeve is provided on the outside of the insulating heat preservation sleeve, both ends of the insulating heat preservation sleeve are fixedly connected to the magnetic shielding sleeve through a connecting frame, and the connecting frame, the magnetic shielding sleeve or the insulating heat preservation sleeve are connected to a lifting mechanism; a guide rail is provided at the bottom of the furnace body, a guide rail hole is provided at the bottom of the furnace door, the guide rail passes through the guide rail hole and extends to the outside of the furnace body, and a vertical support frame is connected to the part of the guide rail located outside the furnace body; a support platform which is slidably matched with the guide rail is provided on the guide rail, the support platform is connected to a feeding and discharging driving mechanism which drives the support platform to slide along the guide rail, a carrier is provided on the upper surface of the support platform, a plurality of heat pipes are provided on the carrier, and the heat pipes include a magnetic core rod, a copper powder layer and a copper pipe which are arranged in sequence from the inside to the outside.

[0007] Furthermore, the magnetic core rod is made of carbon steel.

[0008] Furthermore, the lifting mechanism is a first hydraulic cylinder, the cylinder body of the first hydraulic cylinder is fixedly mounted on the upper surface of the furnace body, and the piston rod of the first hydraulic cylinder extends into the furnace body and is connected to the connecting frame, the magnetic shielding sleeve or the insulating sleeve.

[0009] Further, the carrier includes a bottom tray, the upper surface of the bottom tray is provided with a plurality of evenly distributed sockets, a plurality of vertical guide columns are fixedly provided on the edge of the upper surface of the bottom tray, a positioning plate is fixedly provided in the middle of the guide column, a plurality of middle positioning through holes are provided on the positioning plate, a top tray is provided above the positioning plate, the top tray is slidably matched with the guide column, and a plurality of upper positioning through holes are provided on the top tray, the upper positioning through holes, the middle positioning through holes and the sockets correspond one to one, and a removable top cover is provided on the upper surface of the top tray; the heat pipe is vertically arranged, and the lower end of the magnetic core rod is inserted into the socket, the middle of the copper tube is located in the middle positioning through hole, and the upper end of the magnetic core rod is inserted into the upper positioning through hole.

[0010] Furthermore, a plurality of turntables are arranged on the upper surface of the support platform, and the turntables are installed on the support platform through plane bearings. The turntables are evenly distributed in a circle around the center of the support platform, and a rotating shaft is arranged on the lower surface of each turntable. Two adjacent rotating shafts are transmission-connected, and one of the rotating shafts is connected to a rotation driving mechanism; a detachable carrier is arranged on each turntable.

[0011] Furthermore, the rotation driving mechanism includes a reduction motor, the reduction motor is fixedly mounted on the support frame, and a first sprocket is arranged on the output shaft of the reduction motor, the support frame is provided with an adjustment block which slides with the support frame, the adjustment block is connected with a telescopic mechanism, a third sprocket is arranged on the adjustment block, a second sprocket is arranged on the rotating shaft, the first sprocket, the second sprocket and the third sprocket are connected by a chain, and the moving direction of the adjustment block is perpendicular to the chain between the first sprocket and the second sprocket.

[0012] Furthermore, the feeding and discharging driving mechanism includes a second hydraulic cylinder, the cylinder body of the second hydraulic cylinder is hinged to the support frame, the end of the piston rod of the second hydraulic cylinder is provided with a hook, the side wall of the support platform is provided with a hanging ring, and the hook is hung on the hanging ring.

[0013] The beneficial effect of the present invention is that the heat pipe of the present invention adopts a magnetic core rod as the core rod filled with copper powder, so the magnetic core rod can be heated by electromagnetic heating, and the heat generated by the magnetic core rod is then transferred to the copper powder layer, causing the copper powder layer to heat up and soften.

[0014] Electromagnetic heating is a direct heating method. Compared with traditional resistance heating, it has a higher power utilization rate, can reduce energy consumption, and has a higher heating efficiency. In addition, since the magnetic core rod is in direct contact with the copper powder layer, the heat generated by the magnetic core rod can be quickly transferred to the copper powder layer, thereby further improving the heating efficiency of the copper powder layer; and the magnetic core rod is located inside the copper powder layer, and the heat is transmitted from the inside to the outside, which can reduce heat loss, further improve heat utilization, and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the sintered heat pipe required for the present invention;

[0016] Figure 2 It is a schematic diagram of the main cross-section of the energy-saving heat pipe sintering furnace of the present invention;

[0017] Figure 3 yes Figure 2 Schematic cross-sectional view of AA in the figure;

[0018] Figure 4 yes Figure 3 A magnified schematic diagram of part B;

[0019] Figure 5 yes Figure 3 A magnified schematic diagram of part C;

[0020] Figure 6 yes Figure 3 The enlarged schematic diagram of the D part;

[0021] Figure 7It is a top view schematic diagram of the connection relationship between each rotating shaft and the rotating drive mechanism;

[0022] Figure numerals: 1—furnace body; 2—insulating and heat-preserving sleeve; 3—coil; 4—power supply device; 5—magnetic shielding sleeve; 6—connecting frame; 7—lifting mechanism; 8—guide rail; 9—support platform; 10—carrier; 101—bottom tray; 102—guide column; 103—positioning plate; 104—top tray; 105—top cover; 11—furnace door; 12—support frame; 13—magnetic core rod; 14—copper powder layer; 15—copper tube; 16—turntable; 17—rotating shaft; 18—rotating drive mechanism; 19—first sprocket; 20—second sprocket; 21—chain; 22—telescopic mechanism; 24—third sprocket; 25—feeding and discharging drive mechanism; 26—hook; 27—hanging ring; 28—adjusting block. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] The energy-saving heat pipe sintering method of the present invention is used to sinter the copper powder inside the heat pipe, so that the copper powder is softened and adheres to each other to form a stable capillary structure layer. Figure 1 As shown, the heat pipe includes a magnetic core rod 13, a copper powder layer 14 and a copper tube 15 arranged in sequence from the inside to the outside, and the magnetic core rod 13 runs through the entire copper tube 15. The magnetic core rod 13 is a core rod that can conduct magnetism and is cylindrical. When preparing the heat pipe, the magnetic core rod 13 is first inserted into the copper tube 15 to ensure that the magnetic core rod 13 and the copper tube 15 are coaxial, and there is a gap between the magnetic core rod 13 and the inner wall of the copper tube 15, and then the gap is filled with copper powder to form a copper powder layer 14.

[0025] During sintering, multiple heat pipes are placed on the carrier 10, and the carrier 10 is placed in a sintering furnace. The magnetic core rod 13 is heated by an electromagnetic heating coil. After the magnetic core rod 13 generates heat, the heat is transferred to the copper powder layer 14, so that the copper powder layer 14 softens.

[0026] Since the magnetic core rod 13 is made of magnetic rod material, the magnetic core rod 13 can be quickly heated up by electromagnetic heating, and the heat of the magnetic core rod 13 is then transferred to the copper powder layer 14 to heat the copper powder layer 14 .

[0027] Electromagnetic heating is a direct heating method. Compared with traditional resistance heating, it has a higher utilization rate of electric energy, can reduce energy consumption, and has a higher heating efficiency. When a traditional sintering furnace is working, heat must be conducted from the outside of the copper tube 15 to the copper powder layer 14. The heat transfer path is long, and part of the heat is transferred toward the outside of the sintering furnace, causing heat loss. In the present invention, since the magnetic core rod 13 is in direct contact with the copper powder layer 14, the heat generated by the magnetic core rod 14 can be quickly transferred to the copper powder layer 14, and the heat transfer path is short, so the heating efficiency of the copper powder layer 14 is further improved. In addition, the magnetic core rod 13 is located inside the copper powder layer 14, and the heat is transmitted from the inside to the outside, which can reduce heat loss, further improve heat utilization, and reduce energy consumption.

[0028] Before and during sintering, an inert gas or a reducing gas may be introduced into the sintering furnace to prevent the copper powder layer 14 and the copper tube 15 from being oxidized.

[0029] In the present invention, the heating temperature of the magnetic core rod 13 is about 900°C.

[0030] The energy-saving heat pipe sintering furnace used in the present invention is as follows: Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the furnace body 1 includes a furnace body 1, which can be a metal furnace body or can be built with refractory bricks. The side wall of the furnace body 1 is provided with an openable and closable furnace door 11, which can be controlled by a lifting device. After the lifting device pulls the furnace door 11 upward for a distance, the furnace door 11 is in an open state, and when the lifting device lowers the furnace door 11 to the bottom of the furnace body 1, the furnace door 11 is in a closed state.

[0031] A vertically arranged insulating and heat-insulating sleeve 2 is arranged in the furnace body 1, and a coil 3 is wound around the outer wall of the insulating and heat-insulating sleeve 2, and the coil 3 is connected to a power supply device 4. The insulating and heat-insulating sleeve 2 is made of insulating and heat-insulating materials. The metal cylinder can be used as the center, and the heat-insulating material can be arranged on the inner wall of the metal cylinder, and the outer wall is covered with the insulating material. The heat-insulating material is used for heat preservation to reduce the heat loss rate, and the insulating material is used to prevent the coil 3 from leaking electricity and improve safety. The coil 3 can be arranged in an existing manner, and the power supply device 4 can be arranged in an existing technology. A magnetic shielding sleeve 5 is arranged on the outside of the insulating and heat-insulating sleeve 2, and the magnetic shielding sleeve 5 is used to shield electromagnetics to prevent the magnetic field generated by the coil 3 from affecting other equipment outside the magnetic shielding sleeve 5. The magnetic shielding sleeve 5 can be a metal sleeve, and a shielding coating is applied to the inner and outer walls of the metal sleeve. The two ends of the insulating and heat-insulating sleeve 2 are fixedly connected to the magnetic shielding sleeve 5 through a connecting frame 6, so that the insulating and heat-insulating sleeve 2 and the magnetic shielding sleeve 5 become a whole. The connecting frame 6, the magnetic shielding cover 5 or the insulating and heat-insulating cover 2 are connected with a lifting mechanism 7, which is used to drive the insulating and heat-insulating cover 2, the magnetic shielding cover 5 and the coil 3 to rise and fall synchronously as a whole. Before sintering, the lifting mechanism 7 drives the insulating and heat-insulating cover 2, the magnetic shielding cover 5 and the coil 3 to move to a higher position, and then moves the carrier 10 loaded with the heat pipe to directly below the insulating and heat-insulating cover 2, and then the lifting mechanism 7 drives the insulating and heat-insulating cover 2, the magnetic shielding cover 5 and the coil 3 to move downward, so that the carrier 10 is located inside the insulating and heat-insulating cover 2.

[0032] In order to facilitate the carrier 10 to enter and exit the furnace body 1, a guide rail 8 is provided at the bottom of the furnace body 1. The guide rail 8 can be two, and the two guide rails 8 are parallel to each other. A shim can be provided on the bottom wall of the inner cavity of the furnace body 1 so that the guide rail 8 is at a suitable height. A guide rail hole is provided at the bottom of the furnace door 11. The shape and size of the guide rail hole are adapted to the cross-sectional shape and size of the guide rail 8 to ensure the sealing of the guide rail hole after the guide rail 8 is matched. The guide rail 8 passes through the guide rail hole and extends to the outside of the furnace body 1, and the part of the guide rail 8 outside the furnace body 1 is connected to a vertical support frame 12. The support frame 12 is fixed to the ground and is used to support the guide rail 8 to ensure the stability of the guide rail 8. A support platform 9 is provided on the guide rail 8 to slide with the guide rail 8. The support platform 9 is connected to a material inlet and outlet drive mechanism 25 that drives the support platform 9 to slide along the guide rail 8. The carrier 10 is provided on the upper surface of the support platform 9. The support platform 9 is used to support the carrier 10 and drive the carrier 10 in and out of the furnace body 1. The in-and-out driving mechanism 25 is used to drive the support platform 9 to move. The carrier 10 is used to load the heat pipe. A plurality of heat pipes are arranged on the carrier 10. The heat pipes include a magnetic core rod 13, a copper powder layer 14 and a copper tube 15 arranged sequentially from the inside to the outside. The carrier 10 is detachably mounted on the support platform 9. Before sintering, the carrier 10 can be removed from the support platform 9, and then the carrier 10 is moved to a position convenient for loading the heat pipe onto the carrier 10. After the heat pipe is loaded, the carrier 10 is moved to the support platform 9 by a lifting device and connected to the support platform 9.

[0033] In the present invention, the coil 3 generates an alternating magnetic field after being energized, which can heat the magnetic core rod 13, and the heat generated by the magnetic core rod 13 is transferred to the copper powder layer 14, thereby heating the copper powder layer 14. The specific sintering process is:

[0034] Load multiple heat pipes onto the carrier 10, then fix the carrier 10 onto the support platform 9, open the furnace door 11, use the feed and discharge drive mechanism 25 to drive the support platform 9 and the carrier 10 to move to the bottom of the insulating heat preservation sleeve 2, and then use the lifting mechanism 7 to drive the insulating heat preservation sleeve 2, the magnetic shielding sleeve 5 and the coil 3 to move downward synchronously, so that the insulating heat preservation sleeve 2 surrounds the carrier 10, and the lower ends of the insulating heat preservation sleeve 2 and the magnetic shielding sleeve 5 are supported by the support platform 9. Then close the furnace door 11, introduce inert gas into the furnace body 1 to replace the air inside the furnace body 1, and then connect the coil 3 to the power supply device 4. After the coil 3 is energized, an alternating magnetic field is generated to heat the magnetic core rod 13. The heat of the magnetic core rod 13 is transferred to the copper powder layer 14, so that the copper powder layer 14 heats up and softens and adheres to each other. After sintering is completed, the coil 3 is powered off, and the inert gas can continue to be introduced into the furnace body 1 to promote the cooling of the heat pipe. After the heat pipe is cooled down, the furnace door 11 is opened, and the material feeding and discharging driving mechanism 25 is used to drive the supporting platform 9 and the carrier 10 to move to the outside of the furnace body 1 to remove the heat pipe.

[0035] In the present invention, the magnetic core rod 13 is made of carbon steel, which has a high melting point, high strength, and good magnetic conductivity and can be quickly heated by an alternating magnetic field.

[0036] In the present invention, the lifting mechanism 7 is a first hydraulic cylinder, and the cylinder body of the first hydraulic cylinder is fixedly installed on the upper surface of the furnace body 1 to prevent the high temperature inside the furnace body 1 from causing adverse effects on the cylinder body. The piston rod of the first hydraulic cylinder extends into the furnace body 1 and is connected to the connecting frame 6, the magnetic shielding sleeve 5 or the insulating and heat-preserving sleeve 2.

[0037] In the present invention, the carrier 10 includes a bottom tray 101, which is a circular tray. The upper surface of the bottom tray 101 is provided with a plurality of evenly distributed jacks, the diameter of which matches the diameter of the magnetic core rod 13. The upper surface edge of the bottom tray 101 is fixedly provided with a plurality of vertical guide posts 102, and the middle of the guide posts 102 is fixedly provided with a horizontal positioning plate 103, which is a circular plate, and is provided with a plurality of middle positioning through holes, the diameter of which matches the outer diameter of the copper tube 15. A top tray 104 is provided above the positioning plate 103, and the top tray 104 is a circular tray. The top tray 104 is slidably matched with the guide posts 102 and can slide up and down. A plurality of upper positioning through holes are provided on the top tray 104, and the diameter of the upper positioning through holes matches the outer diameter of the copper tube 15. The upper positioning through hole, the middle positioning through hole and the insertion hole correspond one to one, that is, the magnetic core rod 13 can vertically pass through the upper positioning through hole and the middle positioning through hole in sequence from top to bottom and be inserted into the insertion hole. A removable top cover 105 is provided on the upper surface of the top tray 104, and the top cover 105 can be connected to the top tray 104 by screws. The heat pipe is arranged vertically, and the lower end of the magnetic core rod 13 is inserted into the insertion hole, the middle of the copper tube 15 is located in the middle positioning through hole, and the upper end of the magnetic core rod 13 is inserted into the upper positioning through hole.

[0038] The bottom tray 101 plays a major supporting role and positions the lower end of the magnetic core rod 13. The positioning plate 103 positions the middle of the copper tube 15. The top tray 104 and the top cover 105 are used to position the upper end of the magnetic core rod 13 to ensure the stability of the heat pipe. The top cover 105 is detachably mounted on the top tray 104 to facilitate loading and removing the heat pipe. Specifically, when loading the heat pipe, the top tray 104 slides downward until it contacts the positioning plate 103, and then the copper tube is vertically downward through the upper positioning through hole and the middle positioning through hole until the lower end of the magnetic core rod 13 is inserted into the jack of the bottom tray 101. After multiple heat pipes are loaded, the top tray 104 is moved upward to the top of the heat pipe, and then the top cover 105 is installed on the upper surface of the top tray 104. At this time, the upper end of the magnetic core rod 13 supports the top cover 105. In order to improve the positioning effect of the top tray 104 on the heat pipe, an upper plug hole can be set on the lower surface of the top cover 105. The diameter of the upper plug hole is adapted to the diameter of the magnetic core rod 13, so that the magnetic core rod 13 can be positioned more stably. When removing the heat pipe, first remove the top cover 105, then slide the top tray 104 downward until it contacts the positioning plate 103, and then pull out the heat pipe.

[0039] In order to ensure that the magnetic core rods 13 inside each heat pipe are more evenly heated, a plurality of turntables 16 are arranged on the upper surface of the support platform 9. The turntables 16 are located at the edge of the support platform 9, and no equipment is arranged at the center of the support platform 9. The turntables 16 are installed on the support platform 9 through plane bearings. The turntables 16 are evenly distributed in a circular shape around the center of the support platform 9. A rotating shaft 17 is arranged on the lower surface of each turntable 16. Two adjacent rotating shafts 17 are connected in transmission. Specifically, the two adjacent rotating shafts 17 can be connected through a chain sprocket mechanism, and one of the rotating shafts 17 is connected to a rotating driving mechanism 18; each turntable 16 is provided with a detachable carrier 10. During sintering, the rotating driving mechanism 18 is used to drive one of the rotating shafts 17 to rotate at a uniform speed, and then the rotating shaft 17 drives the other rotating shafts 17 to rotate, and then drives all the turntables 16 to rotate around their own center lines. When the turntable 16 rotates, it drives the carrier 10 and the heat pipes on the carrier 10 to rotate, changes the position of the heat pipe, and improves the uniformity of the heat pipe heating.

[0040] The rotation drive mechanism 18 can be installed on the support platform 9, but the rotation drive mechanism 18 will enter the furnace body 1 along with the support platform 9. The high temperature and magnetic field inside the furnace body 1 are likely to have adverse effects on the rotation drive mechanism 18. Therefore, in the present invention, the rotation drive mechanism 18 includes a reduction motor, which is fixedly installed on the support frame 12 and located outside the furnace body 1 to ensure the service life of the reduction motor. In order to facilitate the transmission of the movement of the reduction motor to the turntable 16, as shown in FIG. Figure 7 As shown, a first sprocket 19 is arranged on the output shaft of the reduction motor, an adjusting block 28 which slides with the supporting frame 12 is arranged on the supporting frame 12, the adjusting block 28 is connected with the telescopic mechanism 22, a third sprocket 24 is arranged on the adjusting block 28, a second sprocket 20 is arranged on the rotating shaft 17, the first sprocket 19, the second sprocket 20 and the third sprocket 24 are connected by a chain 21, and the moving direction of the adjusting block 28 is perpendicular to the chain 21 between the first sprocket 19 and the second sprocket 20.

[0041] The lower end of the rotating shaft 17 extends to the bottom of the supporting platform 9, and the second sprocket 20, the chain 21, etc. are also located below the supporting platform 9. The chain 21 is arranged horizontally. In order to facilitate the arrangement of the chain 21, a vertical chain arrangement notch is provided on the lower surface of the furnace door 11. Since the second sprocket 20 will move with the supporting platform 9, the position will change, and the distance between the second sprocket 20 and the first sprocket 19 will change. In order to adapt to the position change of the second sprocket 20, the present invention is provided with a third sprocket 24. The third sprocket 24, the second sprocket 20 and the first sprocket 19 are located at the three vertices of the right triangle. The third sprocket 24 and the second sprocket 20 are located at the two ends of the hypotenuse of the right triangle. The chain 21 between the first sprocket 19 and the second sprocket 20 is parallel to the guide rail 8. The third sprocket 24 is installed on the adjusting block 28. The adjusting block 28 is connected with a telescopic mechanism 22. The telescopic mechanism 22 is used to drive the adjusting block 28 and the third sprocket 24 to move, so as to adjust the distance from the third sprocket 24 to the first sprocket 19. When the second sprocket 20 moves toward the first sprocket 19 along with the support platform 9, the distance between the first sprocket 19 and the second sprocket 20 decreases. At this time, the telescopic mechanism 22 is used to pull the adjustment block 28 and the third sprocket 24 in a direction away from the first sprocket 19, so that the distance between the first sprocket 19 and the third sprocket 24 increases, ensuring that the chain 21 can be in a straight state. The telescopic mechanism 22 can be a cylinder, a hydraulic cylinder or other equipment. When the second sprocket 20 moves toward the first sprocket 19, the telescopic mechanism 22 applies a large pulling force to the adjustment block 28. When the second sprocket 20 moves in the direction away from the first sprocket 19, the telescopic mechanism 22 applies neither pulling force nor pushing force to the adjusting block 28. The third sprocket 24 can automatically slide under the pull of the chain 21 and automatically adapt to the length change of the chain 21 between the third sprocket 24 and the first sprocket 19 and between the third sprocket 24 and the second sprocket 20. When the second sprocket 20 moves to the position at the time of sintering, the telescopic mechanism 22 applies appropriate pulling force to the adjusting block 28 to ensure that the chain 21 is straightened to stably transmit power.

[0042] In the present invention, the feeding and discharging driving mechanism 25 includes a second hydraulic cylinder, which is located above the chain 21, and the cylinder body of the second hydraulic cylinder is hinged to the support frame 12. The end of the piston rod of the second hydraulic cylinder is provided with a hook 26, and the side wall of the support platform 9 is provided with a hanging ring 27, and the hook 26 is hung on the hanging ring 27. Before sintering, the hook 26 is hung on the hanging ring 27, and the second hydraulic cylinder is extended, and then the support platform 9 can be pushed into the furnace body 1. After the support platform 9 is in place, the hook 26 is removed from the hanging ring 27, and the second hydraulic cylinder is retracted and reset. After sintering is completed, the second hydraulic cylinder is extended, the hook 26 is hung on the hanging ring 27, and the second hydraulic cylinder is retracted, and the support platform 9 can be pulled to move to the outside of the furnace body 1. The feeding and discharging driving mechanism 25 does not need to be arranged inside the furnace body 1, avoiding the influence of high temperature, and is convenient for maintenance and repair. In order to reduce the length of the first hydraulic cylinder and the second hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder can adopt multi-stage hydraulic cylinders.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Energy-saving heat pipe sintering method, characterized by: The heat pipe comprises a magnetic core rod (13), a copper powder layer (14) and a copper pipe (15) which are sequentially arranged from the inside to the outside. The heat pipe is placed on a carrier (10), the carrier (10) is placed in a sintering furnace, and the magnetic core rod (13) is heated by an electromagnetic heating coil. After the magnetic core rod (13) generates heat, the heat is transferred to the copper powder layer (14), so that the copper powder layer (14) softens. The sintering furnace comprises a furnace body (1), the side wall of the furnace body (1) is provided with an openable and closable furnace door (11), a vertically arranged insulating heat preservation sleeve (2) is arranged inside the furnace body (1), a coil (3) is wound around the outer wall of the insulating heat preservation sleeve (2), the coil (3) is connected to a power supply device (4), a magnetic shielding sleeve (5) is arranged outside the insulating heat preservation sleeve (2), the two ends of the insulating heat preservation sleeve (2) are fixedly connected to the magnetic shielding sleeve (5) through a connecting frame (6), and the connecting frame (6), the magnetic shielding sleeve (5) or the insulating heat preservation sleeve (2) are connected to a lifting mechanism (7); a guide rail (8) is arranged at the bottom of the furnace body (1), and the furnace door (11) is provided with a vertically arranged insulating heat preservation sleeve (2), the outer wall of the insulating heat preservation sleeve (2) is provided with a coil (3), and the coil (3) is connected to a power supply device (4); a magnetic shielding sleeve (5) is arranged outside the insulating heat preservation sleeve (2), and the two ends of the insulating heat preservation sleeve (2) are fixedly connected to the magnetic shielding sleeve (5) through a connecting frame (6), and the connecting frame (6), the magnetic shielding sleeve (5) or the insulating heat preservation sleeve (2) are connected to a lifting mechanism (7); a guide rail (8) is arranged at the bottom of the furnace body (1), and the furnace door (11) is provided with a vertically arranged insulating heat preservation sleeve (2) and a vertically arranged insulating heat preservation sleeve (2) is provided with a vertically arranged insulating heat preservation sleeve (2) and a vertically arranged insulating heat preservation sleeve (2) is provided with a vertically arranged insulating heat preservation sleeve (2) and a vertically arranged insulating heat preservation sleeve (2) and a vertically arranged insulating heat preservation sleeve (2) are ... A guide rail hole is provided at the bottom of the furnace body (11), the guide rail (8) passes through the guide rail hole and extends to the outside of the furnace body (1), and the part of the guide rail (8) outside the furnace body (1) is connected to a vertical support frame (12); a support platform (9) is provided on the guide rail (8) and is slidably matched with the guide rail (8), and the support platform (9) is connected to a feed-in and feed-out drive mechanism (25) for driving the support platform (9) to slide along the guide rail (8); a carrier (10) is provided on the upper surface of the support platform (9), and a plurality of heat pipes are provided on the carrier (10), and the heat pipes include a magnetic core rod (13), a copper powder layer (14) and a copper tube (15) which are arranged in sequence from the inside to the outside.

2. An energy-saving heat pipe sintering furnace, comprising a furnace body (1), wherein a side wall of the furnace body (1) is provided with an openable and closable furnace door (11), characterized in that: The furnace body (1) is provided with a vertically arranged insulating sleeve (2), the outer wall of the insulating sleeve (2) is wound with a coil (3), the coil (3) is connected to a power supply device (4), the outer side of the insulating sleeve (2) is provided with a magnetic shielding sleeve (5), the two ends of the insulating sleeve (2) are fixedly connected to the magnetic shielding sleeve (5) through a connecting frame (6), and the connecting frame (6), the magnetic shielding sleeve (5) or the insulating sleeve (2) is connected to a lifting mechanism (7); the bottom of the furnace body (1) is provided with a guide rail (8), the bottom of the furnace door (11) is provided with a guide rail hole, the guide rail ( 8) passes through the guide rail hole and extends to the outside of the furnace body (1), and the part of the guide rail (8) outside the furnace body (1) is connected to a vertical support frame (12); the guide rail (8) is provided with a support platform (9) that slidably cooperates with the guide rail (8), and the support platform (9) is connected to an inlet and outlet driving mechanism (25) that drives the support platform (9) to slide along the guide rail (8); the upper surface of the support platform (9) is provided with a carrier (10), and a plurality of heat pipes are provided on the carrier (10), and the heat pipes include a magnetic core rod (13), a copper powder layer (14) and a copper tube (15) that are arranged in sequence from the inside to the outside.

3. The energy-saving heat pipe sintering furnace according to claim 2, characterized in that: The magnetic core rod (13) is made of carbon steel.

4. The energy-saving heat pipe sintering furnace according to claim 2, characterized in that: The lifting mechanism (7) is a first hydraulic cylinder, the cylinder body of the first hydraulic cylinder is fixedly mounted on the upper surface of the furnace body (1), the piston rod of the first hydraulic cylinder extends into the furnace body (1) and is connected to the connecting frame (6), the magnetic shielding sleeve (5) or the insulating heat preservation sleeve (2).

5. The energy-saving heat pipe sintering furnace according to claim 2, characterized in that: The carrier (10) comprises a bottom tray (101), the upper surface of the bottom tray (101) is provided with a plurality of evenly distributed plug holes, a plurality of vertical guide columns (102) are fixedly provided on the edge of the upper surface of the bottom tray (101), a positioning plate (103) is fixedly provided in the middle of the guide columns (102), a plurality of middle positioning through holes are provided on the positioning plate (103), a top tray (104) is provided above the positioning plate (103), and the top tray (104) is provided on the upper surface of the bottom tray (101). The lower tray (104) is slidably matched with the guide column (102), and a plurality of upper positioning through holes are arranged on the top tray (104), wherein the upper positioning through holes, the middle positioning through holes and the insertion holes correspond to each other one by one, and a removable top cover (105) is arranged on the upper surface of the top tray (104); the heat pipe is arranged vertically, and the lower end of the magnetic core rod (13) is inserted into the insertion hole, the middle part of the copper tube (15) is located in the middle positioning through hole, and the upper end of the magnetic core rod (13) is inserted into the upper positioning through hole.

6. The energy-saving heat pipe sintering furnace according to claim 2 or 5, characterized in that: A plurality of turntables (16) are arranged on the upper surface of the support platform (9). The turntables (16) are mounted on the support platform (9) via plane bearings. The turntables (16) are evenly distributed in a circular shape around the center of the support platform (9). A rotating shaft (17) is arranged on the lower surface of each turntable (16). Two adjacent rotating shafts (17) are transmission-connected, and one of the rotating shafts (17) is connected to a rotation driving mechanism (18). A detachable carrier (10) is arranged on each turntable (16).

7. The energy-saving heat pipe sintering furnace according to claim 6, characterized in that: The rotation drive mechanism (18) comprises a reduction motor, the reduction motor is fixedly mounted on the support frame (12), and a first sprocket (19) is arranged on the output shaft of the reduction motor, an adjustment block (28) is arranged on the support frame (12) and is slidably matched with the support frame (12), the adjustment block (28) is connected to a telescopic mechanism (22), a third sprocket (24) is arranged on the adjustment block (28), and a second sprocket (20) is arranged on the rotating shaft (17), the first sprocket (19), the second sprocket (20) and the third sprocket (24) are connected by a chain (21), and the moving direction of the adjustment block (28) is perpendicular to the chain (21) between the first sprocket (19) and the second sprocket (20).

8. The energy-saving heat pipe sintering furnace according to claim 2, characterized in that: The feeding and discharging driving mechanism (25) comprises a second hydraulic cylinder, the cylinder body of the second hydraulic cylinder is hinged to the support frame (12), a hook (26) is provided at the end of the piston rod of the second hydraulic cylinder, a hanging ring (27) is provided on the side wall of the support platform (9), and the hook (26) is hung on the hanging ring (27).

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