Pressurized sintering furnace for tungsten steel powder processing

Abstract

The invention discloses a pressurization sintering furnace for tungsten steel powder processing, and relates to the technical field of sintering furnaces, the pressurization sintering furnace comprises a control cabinet, a sintering furnace main body and a pressurization mechanism, a furnace pipe, a feeding disc, a driving mechanism and a jacking mechanism are arranged in the sintering furnace main body, the pressurization sintering furnace comprises a sleeve and an electric heating wire, and the electric heating wire is fixedly installed on the side end face of the inner wall of the sleeve; the feeding disc comprises a sliding base and a lifting plate, the lifting plate is installed on the upper end face of the sliding base and slidably connected with the sliding base, the driving mechanism comprises a guide wheel, a gear, a rack, a first rotating shaft, a worm gear, a worm and a motor, the driving mechanism drives the feeding disc to slide, and the jacking mechanism comprises a transmission rod, a jacking rod and a pressing rod. The transmission rod is slidably mounted on the bottom upper end face of the sleeve. The device has the advantages that heating uniformity is optimized, cooling efficiency is improved, and operation convenience is enhanced, and the problems that a mold in a traditional sintering furnace is uneven in heating, slow in cooling and inconvenient to load and unload are solved.

Description

Technical Field

[0001] The invention relates to the technical field of sintering furnaces, in particular to a pressure sintering furnace used for processing tungsten steel powder. Background Art

[0002] In cemented carbide manufacturing, sintering is the process of heating the mixed powder raw materials at high temperature to a state close to the melting point but not completely melted to form a dense solid. During the sintering process, temperature control, pressure application, and the convenience of material loading and unloading have a crucial impact on the quality of the final product.

[0003] Most traditional sintering furnaces place the mold directly in the furnace and heat it through an electric heating wire. During the heating process, the bottom of the mold is not in contact with the air, resulting in slow preheating and cooling of the bottom of the mold, and limitations in heating uniformity and cooling efficiency. In addition, due to the limited space in the furnace, loading and unloading operations are inconvenient, which can easily cause material accumulation at the furnace mouth and affect the sintering effect. Therefore, a pressurized sintering furnace for tungsten steel powder processing is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a pressurized sintering furnace for tungsten steel powder processing, which has the advantages of optimizing heating uniformity, improving cooling efficiency and enhancing operating convenience, and solves the problems of uneven heating of molds, slow cooling and inconvenient loading and unloading in traditional sintering furnaces.

[0005] To achieve the above object, the present invention provides the following technical solution: a pressurized sintering furnace for tungsten steel powder processing, comprising a control cabinet, a sintering furnace body and a pressurizing mechanism, wherein the sintering furnace body is provided with a furnace, a feeding tray, a driving mechanism and a lifting mechanism;

[0006] The invention comprises a sleeve and a heating wire, wherein the heating wire is fixedly mounted on the inner wall side end surface of the sleeve;

[0007] The feeding tray comprises a sliding base and a lifting plate, wherein the lifting plate is mounted on the upper end surface of the sliding base and is slidably connected thereto;

[0008] The driving mechanism comprises a guide wheel, a gear, a rack, a first rotating shaft, a worm wheel, a worm and a motor, and the driving mechanism drives the feeding tray to slide;

[0009] The lifting mechanism includes a transmission rod, a lifting rod and a pressure rod. The transmission rod is slidably mounted on the bottom upper end surface of the sleeve. The lifting rod and the pressure rod are mounted on the transmission rod and movably connected to it. The lifting mechanism is mounted on the lower end of the lifting plate to lift it.

[0010] As a preferred pressurized sintering furnace for tungsten steel powder processing of the present invention, the inner end surface of the furnace is provided with a first slide groove and an inclined rod, the top of the inclined rod is provided with a third pulley cooperating with the first slide groove, the left and right sides of the sliding base are provided with a sixth rotating shaft, the bottom of the inclined rod is rotatably connected to the sixth rotating shaft, the lower end surface of the sliding base is provided with a first pulley and a second pulley rotatably connected, the bottom upper end surface of the sleeve is provided with a third slide groove and a fourth slide groove, the first pulley slides in the fourth slide groove, and the second pulley slides in the third slide groove.

[0011] As a preferred pressure sintering furnace for tungsten steel powder processing of the present invention, the front and rear sides of the third slide groove are provided with heads, the fourth slide groove runs through the front and rear end surfaces of the sleeve, and the diameter of the first pulley is smaller than the diameter of the fourth pulley.

[0012] As a preferred pressurized sintering furnace for tungsten steel powder processing of the present invention, the lower end face of the sliding base is provided with a slide rail, and the upper end face of the bottom of the furnace is provided with a fifth slide groove corresponding to the position of the slide rail, the gear and guide wheel are installed in the fifth slide groove and are rotatably connected to the furnace, the rack is fixedly installed on the side end face of the slide rail, the rack is meshed with the gear for transmission, the side of the slide rail away from the rack is an arc-shaped structure, and the side of the guide wheel is provided with an arc groove that fits with the slide rail.

[0013] As a preferred pressurized sintering furnace for tungsten steel powder processing of the present invention, the bottom lower end face of the furnace is provided with a heat insulation chamber, the inner end face of the heat insulation chamber is provided with a heat insulation material, the motor is installed in the heat insulation chamber, a worm is provided on the output shaft of the motor, a first rotating shaft is provided at the center of the gear, and a worm wheel meshing with the worm is provided on the first rotating shaft.

[0014] As a preferred pressurized sintering furnace for tungsten steel powder processing of the present invention, a sixth slide groove is provided on the bottom upper end surface of the sleeve, a second rotating shaft rotatably connected to the side wall of the sixth slide groove is provided on the side surface of the lifting rod, a fourth rotating shaft rotatably connected to the side wall of the sixth slide groove is provided on the side surface of the pressure rod, a seventh slide groove is provided on the bottom of the side end surface of the lifting rod, an eighth slide groove corresponding to the position of the lifting rod is provided on the transmission rod, a third rotating shaft slidably matched with the seventh slide groove is provided in the eighth slide groove, a ninth slide groove is provided at the bottom of the pressure rod, a tenth slide groove corresponding to the position of the pressure rod is provided at the front end of the transmission rod, a fifth rotating shaft slidably matched with the ninth slide groove is provided in the tenth slide groove, and a limiting sleeve slidably matched with the transmission rod is provided in the sixth slide groove.

[0015] As a preferred pressurized sintering furnace for tungsten steel powder processing of the present invention, the upper end surface of the sliding base is provided with a second sliding hole, the bottom of the lifting plate is provided with a sliding block slidably matched with the second sliding hole, and the top of the lifting rod is provided with a fourth pulley slidably matched with the sliding block.

[0016] As a preferred pressurized sintering furnace for tungsten steel powder processing of the present invention, the number of the pressure rods is two, and the tops of the two groups of pressure rods are provided with rotatably connected sliding rollers, and the height of the sliding rollers is higher than the height of the bottom upper end surface of the furnace.

[0017] As a preferred embodiment of the pressurized sintering furnace for tungsten steel powder processing of the present invention, a grid plate is arranged at the center of the lifting plate, and a grid groove corresponding to the position of the grid plate is arranged in the upper end surface of the sliding base.

[0018] As a preferred pressure sintering furnace for tungsten steel powder processing of the present invention, the left and right sides of the grid plate are evenly arranged at the ventilation holes, and the heating wire is coiled on the left and right sides of the inner end surface of the sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention arranges a first slide groove and an inclined tie rod on the inner end surface of the furnace, and the sliding base cooperates with the inclined tie rod and the third slide groove and the fourth slide groove at the bottom of the sleeve, so that the sliding base can slide outward along the slide groove, so that the sliding base extends out of the sintering furnace body, thereby solving the problem of limited loading and unloading of materials due to the narrow space in the furnace, greatly facilitating the loading operation of the equipment, and the design of the inclined tie rod enhances the stability of the sliding base. The gear is installed in the fifth slide groove and is connected with the furnace core and meshes with the rack for transmission. The rack is driven to slide by the rotation of the gear, thereby accurately controlling the sliding back and forth of the sliding base, realizing precise regulation of the position of the sliding base and meeting the precise requirements of the material position during processing. The side of the slide rail is stuck in the arc groove of the guide wheel, and the gear and guide wheel clamp the slide rail at the same time. This design effectively prevents the slide rail from deviating left and right and up and down during transmission, greatly improving the stability of the transmission and ensuring the smooth progress of the processing. The one-way transmission feature of the worm gear can effectively prevent the lifting plate from sliding down under the action of gravity, ensuring the stability of the lifting plate during the lifting process, and providing a strong guarantee for the stable progress of the sintering process.

[0021] 2. When the sliding base of the present invention is received into the furnace, the rear end face of the sliding base squeezes the pressure rod, and through a series of lever transmissions, the lifting rod lifts the lifting plate, thereby increasing the contact area between the bottom of the sintering mold and the air, making the mold heated more evenly, which is helpful to improve the uniformity of sintering and improve product quality. Ventilation holes are evenly arranged on the left and right sides of the grid plate in the center of the lifting plate, and the heating wire is coiled on the left and right sides of the inner end face of the sleeve. This design increases the ventilation efficiency on the left and right sides of the grid plate, promotes the circulation of hot air, further improves the overall heating effect and sintering uniformity in the furnace, and improves the cooling rate during heat dissipation, which is beneficial to improving the sintering quality of tungsten steel powder. When the sliding base slides out, the lifting plate falls, and the grid plate is received in the grid slot, which does not affect the loading and unloading operations of the mold, improves the convenience of equipment use, is convenient for operators to replace molds and load and unload materials, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 It is a side cross-sectional view of the sintering furnace body and the furnace core of the present invention in a matching state;

[0024] Figure 3 It is a structural schematic diagram of the furnace and the feeding tray in the matching state of the present invention;

[0025] Figure 4 It is a schematic diagram of the coordination state of the furnace, the feeding tray, the driving mechanism and the lifting mechanism of the present invention;

[0026] Figure 5 For the present invention Figure 4 Middle AA section;

[0027] Figure 6 It is a schematic diagram of the cooperation state between the feeding tray and the driving mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the sliding base of the present invention;

[0029] Figure 8 It is a schematic diagram of the furnace structure of the present invention;

[0030] Fig. 9 It is a schematic diagram of the loading of the lifting grid and the lifting mechanism of the present invention;

[0031] Fig.10 For the present invention Fig. 9 Enlarged view of point C in the middle;

[0032] Fig.11 For the present invention Figure 5 Enlarged view of point D in the middle.

[0033] In the figure: 1, control cabinet; 2, sintering furnace body; 3, furnace; 301, sleeve; 3011, first slide; 3012, third slide; 30121, head; 3013, fourth slide; 3014, fifth slide; 3015, sixth slide; 302, heating wire; 303, inclined rod; 3031, third pulley; 4, feeding tray; 401, sliding base; 4011, slide rail; 4012, rack; 4013, first pulley; 4014, second pulley; 4015, second slide hole; 4016, grille slot; 4017, sixth rotating shaft; 402, lifting plate; 4021, slider; 40 22. Grille plate; 4023. Ventilation hole; 5. Driving mechanism; 501. Guide wheel; 502. Gear; 503. First rotating shaft; 504. Worm wheel; 505. Worm; 506. Motor; 6. Lifting mechanism; 601. Transmission rod; 6011. Eighth slide slot; 6012. Third rotating shaft; 6013. Tenth slide slot; 6014. Fifth rotating shaft; 602. Lifting rod; 6021. Second rotating shaft; 6022. Seventh slide slot; 6023. Fourth pulley; 603. Pressure rod; 6031. Roller; 6032. Fourth rotating shaft; 6033. Ninth slide slot; 604. Limiting sleeve; 7. Pressurizing mechanism. DETAILED DESCRIPTION

[0034] Example 1

[0035] See also Figure 1-Figure 11 A pressurized sintering furnace for processing tungsten steel powder comprises a control cabinet 1, a sintering furnace body 2 and a pressurizing mechanism 7, wherein a furnace 3, a feeding tray 4, a driving mechanism 5 and a lifting mechanism 6 are arranged in the sintering furnace body 2;

[0036] It includes a sleeve 301 and a heating wire 302, wherein the heating wire 302 is fixedly mounted on the inner wall side end surface of the sleeve 301;

[0037] The feeding tray 4 includes a sliding base 401 and a lifting plate 402, wherein the lifting plate 402 is mounted on the upper end surface of the sliding base 401 and is slidably connected thereto;

[0038] The driving mechanism 5 includes a guide wheel 501, a gear 502, a rack 4012, a first rotating shaft 503, a worm wheel 504, a worm 505 and a motor 506. The driving mechanism 5 drives the feeding tray 4 to slide;

[0039] The lifting mechanism 6 includes a transmission rod 601, a lifting rod 602 and a pressure rod 603. The transmission rod 601 is slidably installed on the bottom upper end surface of the sleeve 301. The lifting rod 602 and the pressure rod 603 are installed on the transmission rod 601 and movably connected with it. The lifting mechanism 6 is installed at the lower end of the lifting plate 402 to lift it.

[0040] Furthermore, a first slide groove 3011 and a diagonal rod 303 are provided on the inner end surface of the furnace 3, a third pulley 3031 cooperating with the first slide groove 3011 is provided on the top of the diagonal rod 303, a sixth rotating shaft 4017 is provided on the left and right sides of the sliding base 401, the bottom of the diagonal rod 303 is rotatably connected to the sixth rotating shaft 4017, a first pulley 4013 and a second pulley 4014 rotatably connected are provided on the lower end surface of the sliding base 401, a third slide groove 3012 and a fourth slide groove 3013 are provided on the bottom upper end surface of the sleeve 301, the first pulley 4013 slides in the fourth slide groove 3013, and the second pulley 4014 slides in the third slide groove 3012.

[0041] The sliding base 401 can slide outward along the second slide groove and the third slide groove 3012, so that the sliding base 401 extends out of the sintering furnace body 2, which is convenient for loading and unloading, and avoids the small space in the furnace 3 restricting loading and unloading. The design of the inclined rod 303 enhances the stability of the sliding base 401, and avoids the sliding base 401 from falling away from the end of the sleeve 301 after being extended, which affects the stability of the sliding base 401.

[0042] Furthermore, the third slide groove 3012 is provided with a head 30121 on both sides of the front and rear ends, the fourth slide groove 3013 runs through the front and rear end surfaces of the sleeve 301 , and the diameter of the first pulley 4013 is smaller than the diameter of the fourth pulley 6023 .

[0043] The second pulley 4014 can slide out from the fourth slide groove 3013, and the head 30121 limits the sliding stroke of the first pulley 4013 to prevent the sliding base 401 from slipping. Guided by the third slide groove 3012 and the fourth slide groove 3013, the sliding base 401 can move smoothly along the predetermined path, avoiding instability caused by deviation or vibration. The small wheel reduces the weight of the protruding end of the entire sliding base 401, thereby reducing its probability of falling.

[0044] Furthermore, a slide rail 4011 is provided on the lower end surface of the sliding base 401, and a fifth slide groove 3014 corresponding to the position of the slide rail 4011 is provided on the upper end surface of the bottom of the furnace 3. The gear 502 and the guide wheel 501 are installed in the fifth slide groove 3014 and are rotatably connected to the furnace 3. The rack 4012 is fixedly installed on the side end surface of the slide rail 4011, and the rack 4012 is meshed with the gear 502 for transmission. The side of the slide rail 4011 away from the rack 4012 is an arc-shaped structure, and the side of the guide wheel 501 is provided with an arc groove that fits the slide rail 4011.

[0045] The slide rail 4011 is clamped by the gear 502 and the guide wheel 501 to prevent the slide rail 4011 from shifting left and right. At the same time, the side of the slide rail 4011 is inserted into the arc groove of the guide wheel 501 to prevent the slide rail 4011 from shifting up and down, thereby improving the stability of the transmission. The gear 502 rotates to drive the rack 4012 to slide, thereby driving the sliding base 401 to slide back and forth, thereby realizing precise control of the position of the sliding base 401.

[0046] Furthermore, a heat-insulating chamber is provided at the bottom lower end surface of the furnace 3, and a heat-insulating material is provided at the inner end surface of the heat-insulating chamber. The motor 506 is installed in the heat-insulating chamber, and a worm 505 is provided on the output shaft of the motor 506. The center of the gear 502 is provided with a first rotating shaft 503, and a worm wheel 504 meshing with the worm 505 is provided on the first rotating shaft 503.

[0047] The motor 506 is installed in the heat-insulating room to reduce the impact of the high temperature in the furnace 3 on the motor 506. The transmission torque of the motor 506 is improved through the transmission of the worm wheel 504 and the worm 505. The one-way transmission characteristics of the worm wheel 504 and the worm 505 can effectively prevent the lifting plate 402 from sliding down under the action of gravity, thereby improving the stability of the lifting plate 402 when it is lifted.

[0048] Further, the upper end surface of the bottom of the sleeve 301 is provided with a sixth slide groove 3015, the side end surface of the lifting rod 602 is provided with a second shaft 6021 rotatably connected to the side wall of the sixth slide groove 3015, the side surface of the pressure rod 603 is provided with a fourth shaft 6032 rotatably connected to the side wall of the sixth slide groove 3015, the bottom of the side end surface of the lifting rod 602 is provided with a seventh slide groove 6022, and the transmission rod 601 is provided with an eighth slide groove 6011 corresponding to the position of the lifting rod 602. The eighth slide groove 6011 is provided with a third rotating shaft 6012 which slides with the seventh slide groove 6022, a ninth slide groove 6033 is provided at the bottom of the pressure rod 603, a tenth slide groove 6013 corresponding to the position of the pressure rod 603 is provided at the front end of the transmission rod 601, a fifth rotating shaft 6014 which slides with the ninth slide groove 6033 is provided in the tenth slide groove 6013, and a limiting sleeve 604 which slides with the transmission rod 601 is provided in the sixth slide groove 3015.

[0049] When the sliding base 401 is retracted into the furnace 3, the rear end face of the sliding base 401 squeezes the top of the pressure rod 603, so that the bottom of the pressure rod 603 pushes the transmission rod 601 forward under the action of the lever, thereby driving the lifting rod 602 to rotate through the transmission rod 601, so that the lifting rod 602 is lifted upward under the action of the lever, and the lifting plate 402 is lifted, thereby increasing the contact area between the bottom of the sintering mold and the air, increasing the preheating and cooling rates, and further improving the uniformity of sintering.

[0050] Furthermore, a second sliding hole 4015 is provided on the upper end surface of the sliding base 401 , a sliding block 4021 slidably matched with the second sliding hole 4015 is provided at the bottom of the lifting plate 402 , and a fourth pulley 6023 slidably matched with the sliding block 4021 is provided on the top of the lifting rod 602 .

[0051] The lifting rod 602 squeezes the slider 4021 to lift the lifting plate 402. During the lifting process, displacement will occur between the lifting rod 602 and the slider 4021. The fourth pulley 6023 is used to reduce the friction resistance between the slider 4021 and the lifting rod 602, thereby improving the smoothness of the lifting and reducing equipment wear.

[0052] Furthermore, there are two pressure rods 603 , and the tops of the two groups of pressure rods 603 are provided with rotatably connected sliding rollers 6031 , and the height of the sliding rollers 6031 is higher than the height of the bottom upper end surface of the furnace 3 .

[0053] The sliding roller 6031 is used to reduce the friction between the pressure rod 603 and the sliding base 401, thereby reducing equipment wear. The sliding roller 6031 enables the two sets of lifting mechanisms 6 to move synchronously, so that the lifting plate 402 can be lifted and lowered smoothly, avoiding the sliding of the mold on the upper end of the lifting plate 402. The sliding roller 6031 limits the falling height of the top of the pressure rod 603 to prevent it from falling into the sixth slide groove 3015, resulting in the inability to trigger the lifting mechanism 6 when the sliding base 401 is recovered.

[0054] Furthermore, a grid plate 4022 is provided at the center of the lifting plate 402 , and a grid groove 4016 corresponding to the position of the grid plate 4022 is provided in the upper end surface of the sliding base 401 .

[0055] The mold is lifted up by the grid plate 4022, so that the bottom of the mold is suspended in contact with hot air, which improves the uniformity of mold preheating and helps to improve the sintering quality. When the lifting plate 402 falls, the grid plate 4022 is retracted into the grid slot 4016, which does not affect the loading and unloading of the mold, thereby improving the convenience of the equipment.

[0056] Furthermore, the left and right sides of the grid plate 4022 are evenly arranged at the ventilation holes 4023 , and the heating wire 302 is coiled on the left and right sides of the inner end surface of the sleeve 301 .

[0057] The electric heating wire 302 heats the mold on the left and right sides of the sleeve 301 , and increases the ventilation efficiency on the left and right sides of the grid plate 4022 through the ventilation holes 4023 , thereby improving the circulation efficiency of hot air and improving the overall heating effect in the furnace 3 .

[0058] When the sintering furnace is in use, first, the driving mechanism 5 drives the sliding base 401 to slide, and the output shaft of the motor 506 drives the worm 505 to rotate. Since the worm 505 meshes with the worm wheel 504 on the first rotating shaft 503 at the center of the gear 502, the gear 502 rotates accordingly, and the gear 502 meshes with the rack 4012 installed on the side end face of the slide rail 4011 at the lower end face of the sliding base 401 for transmission. At the same time, the side face of the slide rail 4011 is stuck in the arc groove of the guide wheel 501, and the gear 502 and the guide wheel 501 clamp the slide rail 4011 to prevent it from deflecting. Driven by the gear 502, the sliding base 401 is rotatably connected to the bottom of the inclined rod 303 through the sixth rotating shaft 4017 on its left and right sides, and the first pulley 4013 at the bottom slides in the fourth sliding groove 3013 at the bottom of the sleeve 301, and the second pulley 4014 slides in the third sliding groove 3014. The first pulley 4013 is driven by the first gear 4014 and the second pulley 4014 is driven by the second gear 4015. The sliding base 401 slides in the slide groove 3012, and the heads 30121 on the front and rear sides of the third slide groove 3012 limit the sliding stroke of the first pulley 4013 to prevent the sliding base 401 from slipping. The sliding base 401 slides outward along the inclined rod 303 and the slide groove, and extends out of the sintering furnace body 2, which is convenient for loading the sintering mold. The sintering mold filled with tungsten steel powder is placed on the upper end surface of the jacking plate which is in the extended state of the feeding tray 4 at this time, ensuring that it is centered and placed stably. Then, the motor 506 is reversed, and the gear 502 is driven to rotate in the opposite direction through the worm gear 504 and the worm 505, so that the rack 4012 drives the sliding base 401 to slide in the opposite direction. Under the guidance of the inclined rod 303, the sliding base 401 slides in the third slide groove 3012 and the fourth slide groove 3013 through the first pulley 4013 and the second pulley 4014, and is gradually retracted into the furnace 3.

[0059] When the sliding base 401 is completely retracted into the furnace 3, the rear end surface of the sliding base 401 will squeeze the top of the pressure rod 603. There are two pressure rods 603, and the tops are provided with sliding rollers 6031 that are rotatably connected. The sliding rollers 6031 reduce the friction between the pressure rod 603 and the sliding base 401, and make the two sets of lifting mechanisms 6 move synchronously. The bottom of the pressure rod 603 pushes the transmission rod 601 forward under the action of the lever. The transmission rod 601 slides through the limiting sliding sleeve 604 in the sixth sliding groove 3015, and cooperates with the lifting rod 602 and the pressure rod 603 through the rotating shaft and the sliding groove. The push of the pressure rod 603 makes the transmission rod 601 move forward. The movable rod 601 drives the lifting rod 602 to rotate, and the fourth pulley 6023 on the top of the lifting rod 602 contacts the slider 4021 at the bottom of the lifting plate 402. As the lifting rod 602 rotates, the fourth pulley 6023 squeezes the slider 4021 to lift the lifting plate 402 upward. Since there is a grid plate 4022 in the center of the lifting plate 402, and there are ventilation holes 4023 on the left and right sides, during the lifting process, the grid plate 4022 lifts the mold, so that the bottom of the mold is suspended in the air, increasing the contact area with the hot air.

[0060] Close the sintering furnace cover, open the control cabinet 1, and control the heating system in the sintering furnace body 2 through the control cabinet 1. The heating wire 302 starts to heat up. Since the heating wire 302 is coiled on the left and right sides of the inner end surface of the sleeve 301, and the grid plate 4022 of the lifting plate 402 has ventilation holes 4023, hot air can circulate effectively to heat and sinter the tungsten steel powder in the mold. During the entire sintering process, the pressure mechanism 7 applies appropriate pressure to the furnace to meet the pressure requirements for sintering the tungsten steel powder.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressurized sintering furnace for processing tungsten steel powder, comprising a control cabinet (1), a sintering furnace body (2) and a pressurizing mechanism (7), characterized in that: The sintering furnace body (2) is provided with a furnace core (3), a feeding tray (4), a driving mechanism (5) and a lifting mechanism (6); The device comprises a sleeve (301) and a heating wire (302), wherein the heating wire (302) is fixedly mounted on the inner wall side end surface of the sleeve (301); The feeding tray (4) comprises a sliding base (401) and a lifting plate (402), wherein the lifting plate (402) is mounted on the upper end surface of the sliding base (401) and is slidably connected thereto; The driving mechanism (5) comprises a guide wheel (501), a gear (502), a rack (4012), a first rotating shaft (503), a worm wheel (504), a worm (505) and a motor (506); The lifting mechanism (6) comprises a transmission rod (601), a lifting rod (602) and a pressure rod (603); the transmission rod (601) is slidably mounted on the bottom upper end surface of the sleeve (301); the lifting rod (602) and the pressure rod (603) are mounted on the transmission rod (601) and are movably connected thereto; the lifting mechanism (6) is mounted at the lower end of the lifting plate (402) to lift it.

2. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 1, characterized in that: The inner end surface of the furnace (3) is provided with a first slide groove (3011) and an inclined rod (303); the top of the inclined rod (303) is provided with a third pulley (3031) matched with the first slide groove (3011); the left and right sides of the sliding base (401) are provided with a sixth rotating shaft (4017); the bottom of the inclined rod (303) is rotatably connected to the sixth rotating shaft (4017); the lower end surface of the sliding base (401) is provided with a first pulley (4013) and a second pulley (4014) rotatably connected; the upper end surface of the bottom of the sleeve (301) is provided with a third slide groove (3012) and a fourth slide groove (3013); the first pulley (4013) slides in the fourth slide groove (3013); and the second pulley (4014) slides in the third slide groove (3012).

3. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 2, characterized in that: The third slide groove (3012) is provided with a head (30121) on both sides thereof, the fourth slide groove (3013) passes through the front and rear end surfaces of the sleeve (301), and the diameter of the first pulley (4013) is smaller than the diameter of the fourth pulley (6023).

4. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 3, characterized in that: The lower end surface of the sliding base (401) is provided with a slide rail (4011), the upper end surface of the bottom of the furnace (3) is provided with a fifth slide groove (3014) corresponding to the position of the slide rail (4011), the gear (502) and the guide wheel (501) are installed in the fifth slide groove (3014) and are rotatably connected to the furnace (3), the rack (4012) is fixedly installed on the side end surface of the slide rail (4011), the rack (4012) and the gear (502) are meshed for transmission, the side of the slide rail (4011) away from the rack (4012) is an arc-shaped structure, and the side surface of the guide wheel (501) is provided with an arc groove that fits the slide rail (4011).

5. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 4, characterized in that: The bottom lower end surface of the furnace (3) is provided with a heat-insulating chamber, the motor (506) is installed in the heat-insulating chamber, a worm (505) is provided on the output shaft of the motor (506), a first rotating shaft (503) is provided at the center of the gear (502), and a worm wheel (504) meshing with the worm (505) is provided on the first rotating shaft (503).

6. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 5, characterized in that: The bottom upper end surface of the sleeve (301) is provided with a sixth slide groove (3015), the side end surface of the lifting rod (602) is provided with a second rotating shaft (6021) rotatably connected to the side wall of the sixth slide groove (3015), the side surface of the pressure rod (603) is provided with a fourth rotating shaft (6032) rotatably connected to the side wall of the sixth slide groove (3015), the bottom of the side end surface of the lifting rod (602) is provided with a seventh slide groove (6022), and the transmission rod (601) is provided with an eighth slide groove (6011) corresponding to the position of the lifting rod (602). The eighth slide groove (6011) is provided with a third rotating shaft (6012) which is slidably matched with the seventh slide groove (6022), the bottom of the pressure rod (603) is provided with a ninth slide groove (6033), the front end of the transmission rod (601) is provided with a tenth slide groove (6013) corresponding to the position of the pressure rod (603), the tenth slide groove (6013) is provided with a fifth rotating shaft (6014) which is slidably matched with the ninth slide groove (6033), and the sixth slide groove (3015) is provided with a limiting sleeve (604) which is slidably matched with the transmission rod (601).

7. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 6, characterized in that: The upper end surface of the sliding base (401) is provided with a second sliding hole (4015), the bottom of the lifting plate (402) is provided with a sliding block (4021) that slidably cooperates with the second sliding hole (4015), and the top of the lifting rod (602) is provided with a fourth pulley (6023) that slidably cooperates with the sliding block (4021).

8. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 7, characterized in that: There are two pressure rods (603), and the tops of the two groups of pressure rods (603) are provided with rotatably connected sliding rollers (6031), and the height of the sliding rollers (6031) is higher than the height of the bottom upper end surface of the furnace (3).

9. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 8, characterized in that: A grid plate (4022) is arranged at the center of the lifting plate (402), and a grid groove (4016) corresponding to the position of the grid plate (4022) is arranged in the upper end surface of the sliding base (401).

10. A pressure sintering furnace for processing tungsten steel powder as claimed in claim 9, characterized in that: The left and right sides of the grid plate (4022) are evenly arranged on the ventilation holes (4023), and the heating wire (302) is coiled on the left and right sides of the inner end surface of the sleeve (301).

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