Vertical vacuum sintering equipment

Abstract

The utility model discloses vertical vacuum sintering equipment, which comprises a tower unit, a furnace body unit and a vacuum unit, the tower unit comprises a loading and unloading mechanism, and the furnace body unit comprises a furnace body cover, an upper furnace body and a lower furnace body which are sequentially arranged from top to bottom. The loading and unloading mechanism can pick up and drive powder and sintered parts to move, loading and unloading operation is completed, and the loading and unloading operation convenience of the equipment is improved. The furnace body unit is of a split structure, the first movement mechanism can drive the furnace body cover to move so as to open and move the furnace body cover, the second movement mechanism can drive the lower furnace body to move, the third movement mechanism can drive the hanging rod to rotate, and the vacuum unit can vacuumize the lower furnace body. A loading and unloading structure is arranged to realize loading and unloading, so that the operation convenience of the equipment is improved; the furnace body unit is of a split structure, the machining and manufacturing difficulty of the furnace body unit is lowered, the heat preservation performance and the using effect of the furnace body unit are guaranteed, and the adaptability of the vertical vacuum sintering equipment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of powder metallurgy equipment and its peripheral supporting facilities, and in particular to a vertical vacuum sintering equipment. Background Technology

[0002] Vacuum sintering refers to the process of transforming a ceramic blank or metal powder of a certain shape into a dense, hard, volume-stable sinter with specific properties through a physicochemical process under high temperature and a certain degree of vacuum. Traditional vacuum sintering is carried out in horizontal or vertical arrangements, with vertical structures typically used for sintering long columnar powder bodies.

[0003] Existing vertical vacuum sintering furnaces typically consist of a tower drive, a vacuum furnace body, a vacuum extraction system, and a heating system. The vacuum sintering furnace is divided into upper and lower sections: the upper section is for loading and unloading powder, employing a side-opening door structure, while the lower section houses the heating system. After loading, the upper furnace door is closed to maintain a complete seal. The powder is then fed into the lower heating system via the drive system, where a vacuum is drawn. Once the vacuum level meets the process requirements, heating begins according to the heating formula. This type of vacuum sintering equipment requires an additional powder loading device, which can be installed using a robotic arm and a multi-functional transport vehicle, but the loading and unloading operations are not very convenient. Furthermore, the side-opening door structure results in a non-circular furnace body structure, making welding relatively difficult and increasing the number of welds, which can lead to leaks later on. Additionally, to withstand the pressure under high vacuum, more materials are needed, requiring additional reinforcing structures, resulting in high manufacturing difficulty, production and maintenance costs, and ultimately, poor adaptability of the sintering furnace. Meanwhile, the side-opening door structure results in some internal structural components being separate, especially the insulation material, which may have gaps that affect the performance. In addition, the side-opening door structure makes the furnace body larger, which is inconvenient for installation and maintenance, further reducing the adaptability of the sintering equipment.

[0004] Therefore, how to change the current situation where the vertical vacuum sintering equipment is not convenient to operate and has poor adaptability has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a vertical vacuum sintering equipment to solve the problems existing in the above-mentioned related technologies, improve the ease of operation of the vertical vacuum sintering equipment, and enhance its adaptability.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a vertical vacuum sintering device, comprising:

[0008] The tower unit includes a supporting tower and a loading and unloading mechanism disposed on the supporting tower. The loading and unloading mechanism can drive the powder and the sintered parts after sintering of the powder to move in order to realize the loading and unloading of materials.

[0009] The furnace body unit includes a furnace cover, an upper furnace body, and a lower furnace body arranged sequentially from top to bottom. The furnace cover is movably connected to the supporting tower via a first motion mechanism. The first motion mechanism can drive the furnace cover to reciprocate, thereby enabling the furnace cover and the upper furnace body to be detachably connected. A sealing element is provided between the furnace cover and the upper furnace body when they are connected. The upper furnace body is fixed to the supporting tower. The lower furnace body is connected to a second motion mechanism, which can drive the lower furnace body to reciprocate, thereby enabling the lower furnace body to reciprocate. The upper furnace body is detachably connected to the lower furnace body. When the lower furnace body is connected to the upper furnace body, a sealing valve is provided between them. A heating mechanism is provided inside the lower furnace body. A hanging rod is connected to the furnace body cover. The hanging rod can rotatably pass through the furnace body cover and can extend into the upper furnace body and the lower furnace body. A sealing mechanism is provided between the hanging rod and the furnace body cover. The powder to be sintered can be connected to the hanging rod. A third motion mechanism is connected to the hanging rod. The third motion mechanism can drive the hanging rod to rotate. The third motion mechanism is slidably connected to the support tower.

[0010] The vacuum unit includes a vacuum pumping device that is connected to the inner cavity of the furnace unit and is capable of evacuating the furnace unit.

[0011] Preferably, the support tower includes a top frame, a middle frame and a bottom frame arranged in sequence. The top frame, the middle frame and the bottom frame are detachably connected. The furnace cover and the hanging rod are movably connected to the top frame. The upper furnace body is fixed on the middle frame. The lower furnace body can slide back and forth and extend into the bottom frame and connect with the upper furnace body.

[0012] The loading and unloading mechanism includes a robotic arm that is slidably connected to the top frame. The sliding direction of the robotic arm is parallel to the vertical plane. The robotic arm is capable of picking up powder and sintered parts after the powder is sintered.

[0013] Preferably, the support tower is provided with a tower vertical slide rail, the first motion mechanism includes a first transverse slide rail and a first transverse slider, the first transverse slide rail is slidably connected to the tower vertical slide rail, the sliding direction of the first transverse slide rail is parallel to the vertical direction, the first transverse slider is slidably connected to the first transverse slide rail, the sliding direction of the first transverse slider is parallel to the horizontal direction, and the furnace cover is connected to the first transverse slider.

[0014] Preferably, the third motion mechanism is connected to a second transverse slider and a second transverse slide rail. The second transverse slide rail is slidably connected to the vertical slide rail of the tower. The sliding direction of the second transverse slide rail is parallel to the vertical direction. The second transverse slide rail is parallel to the first transverse slide rail and located above the first transverse slide rail. The second transverse slider is slidably connected to the second transverse slide rail. The sliding direction of the second transverse slider is parallel to the horizontal direction.

[0015] The third motion mechanism includes a rotary driver and a drive spindle. The rotary driver is connected to the second transverse slider, and the output end of the rotary driver is connected to the drive spindle. The drive spindle is detachably connected to the boom.

[0016] Preferably, the second motion mechanism includes a motion base, a mounting slide rail, and a movable base plate. The motion base is located below the upper furnace body, the mounting slide rail is disposed on the motion base, the movable base plate is slidably connected to the mounting slide rail, and the lower furnace body is disposed on the movable base plate.

[0017] Preferably, both the upper furnace body and the hanging rod are provided with cooling channels, which can be connected to an external cooling medium source.

[0018] Preferably, the lower furnace body adopts a multi-section structure, the lower furnace body includes a middle section and an end section, the number of middle sections is multiple sets, the multiple sets of middle sections are connected sequentially along the axis of the lower furnace body, and the two end sections are respectively set at both ends of the multiple sets of middle sections.

[0019] Preferably, the middle section is provided with a furnace core tube, a heating layer and a heat insulation layer stacked sequentially from the inside out. The furnace core tube can accommodate the powder and the sintered part after the powder is sintered. The heating layer can heat the powder. The heat insulation layer is made of heat insulation material.

[0020] The end section is provided with heat insulation material and can accommodate powder and sintered parts after the powder is sintered.

[0021] Preferably, the vertical vacuum sintering equipment further includes a heating unit, which includes a heating power supply and a control mechanism. The heating layer is electrically heated, and the heating layer is electrically connected to the heating power supply. The control mechanism is communicatively connected to the heating power supply.

[0022] Preferably, the vacuum unit further includes a vacuum pipeline, and the vacuum pumping device is connected to the inner cavity of the lower furnace body via the vacuum pipeline. The vacuum pipeline is equipped with a vacuum gauge and a control valve.

[0023] The vacuum unit also includes a purge line, which is connected to an external purge gas source.

[0024] This utility model achieves the following technical effects compared to related technologies: The vertical vacuum sintering equipment of this utility model includes a tower unit, a furnace body unit, and a vacuum unit. The tower unit includes a supporting tower and a loading and unloading mechanism mounted on the supporting tower. The loading and unloading mechanism can move the powder and the sintered powder to realize material loading and unloading. The furnace body unit includes a furnace cover, an upper furnace body, and a lower furnace body arranged sequentially from top to bottom. The furnace cover is movably connected to the supporting tower by a first motion mechanism. The first motion mechanism can drive the furnace cover to reciprocate, so as to realize the detachable connection between the furnace cover and the upper furnace body. When the furnace cover and the upper furnace body are connected, a sealing element is provided between them. The upper furnace body is fixed on the supporting tower. The lower furnace body is connected to... A second motion mechanism is connected to the furnace body, which can drive the lower furnace body to reciprocate, so as to realize the detachable connection between the lower furnace body and the upper furnace body. When the lower furnace body and the upper furnace body are connected, a sealing valve is set between them. A heating mechanism is set in the lower furnace body. The furnace body cover is connected to a hanging rod, which can rotatably pass through the furnace body cover and can extend into the upper furnace body and the lower furnace body. A sealing mechanism is set between the hanging rod and the furnace body cover. The powder to be sintered can be connected to the hanging rod. The hanging rod is connected to a third motion mechanism, which can drive the hanging rod to rotate. The third motion mechanism is slidably connected to the support tower. The vacuum unit includes a vacuum pumping device, which is connected to the inner cavity of the furnace body unit and can evacuate the furnace body unit.

[0025] This utility model discloses a vertical vacuum sintering equipment. The supporting tower supports the furnace unit and loading / unloading structure. The loading / unloading mechanism picks up and moves the powder and sintered parts, completing the loading and unloading operations and improving the convenience of the equipment's loading and unloading. The furnace unit adopts a split structure. The first motion mechanism moves the furnace cover to open and move it, facilitating loading / unloading. The second motion mechanism moves the lower furnace body to connect it to the upper furnace body. A lifting rod passes through the furnace cover and extends into both the upper and lower furnace bodies. The lifting rod connects to the powder, ensuring smooth material entry and exit from the furnace unit. A third motion mechanism connects to the lifting rod, rotating it to ensure uniform heating of the material during sintering. This third motion mechanism can slide relative to the supporting tower to allow the lifting rod to adapt to the movement of the furnace cover. A sealing valve is installed between the lower and upper furnace bodies. After the powder enters the lower furnace body, the vacuum unit can evacuate the lower furnace body, ensuring the smooth progress of the vacuum sintering process. The vertical vacuum sintering equipment of this utility model is equipped with a loading and unloading structure to realize material loading and unloading, which improves the ease of operation of the equipment; the furnace body unit adopts a split structure, which reduces the processing and manufacturing difficulty of the furnace body unit, ensures the heat preservation performance and use effect of the furnace body unit, improves the installation and maintenance convenience of the furnace body unit, reduces energy consumption, and thus greatly enhances the adaptability of the vertical vacuum sintering equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the vertical vacuum sintering equipment disclosed in the embodiments of this utility model;

[0028] Figure 2 This is an enlarged schematic diagram of point A of the vertical vacuum sintering equipment disclosed in the embodiments of this utility model;

[0029] Figure 3 This is a schematic diagram of the furnace body unit of the vertical vacuum sintering equipment disclosed in the embodiments of this utility model.

[0030] In the diagram: 1. Supporting tower; 2. Loading and unloading mechanism; 3. Furnace cover; 4. Upper furnace body; 5. Lower furnace body; 6. First motion mechanism; 7. Second motion mechanism; 8. Lifting rod; 9. Third motion mechanism; 10. Top frame; 11. Middle frame; 12. Bottom frame; 13. Tower vertical slide rail; 14. First horizontal slide rail; 15. Second horizontal slide rail; 16. Drive spindle; 17. Motion base; 18. Mounting slide rail; 19. Moving base plate; 20. Intermediate section; 21. Sealing valve. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The purpose of this invention is to provide a vertical vacuum sintering equipment to solve the problems existing in the above-mentioned related technologies, improve the ease of operation of the vertical vacuum sintering equipment, and enhance its adaptability.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] This utility model provides a vertical vacuum sintering device. Please refer to [reference needed]. Figure 1-3The system includes a tower unit, a furnace body unit, and a vacuum unit. The tower unit includes a supporting tower 1 and a loading / unloading mechanism 2 mounted on the supporting tower 1. The loading / unloading mechanism 2 can move the powder and the sintered powder to achieve material loading and unloading. The furnace body unit includes a furnace cover 3, an upper furnace body 4, and a lower furnace body 5 arranged sequentially from top to bottom. The furnace cover 3 is movably connected to the supporting tower 1 via a first motion mechanism 6. The first motion mechanism 6 can drive the furnace cover 3 to reciprocate, so that the furnace cover 3 and the upper furnace body 4 can be detachably connected. When the furnace cover 3 and the upper furnace body 4 are connected, a sealing element is provided between them. The upper furnace body 4 is fixed to the supporting tower 1. The lower furnace body 5 is connected to a second motion mechanism 7, which can drive the lower furnace body 5 to move. The furnace body 5 reciprocates to allow for detachable connection between the lower furnace body 5 and the upper furnace body 4. When the lower furnace body 5 is connected to the upper furnace body 4, a sealing valve 21 is installed between them. A heating mechanism is installed inside the lower furnace body 5. The furnace cover 3 is connected to a lifting rod 8, which can rotatably pass through the furnace cover 3 and extend into the upper furnace body 4 and the lower furnace body 5. A sealing mechanism is installed between the lifting rod 8 and the furnace cover 3. The powder to be sintered can be connected to the lifting rod 8. The lifting rod 8 is connected to a third motion mechanism 9, which can drive the lifting rod 8 to rotate. The third motion mechanism 9 is slidably connected to the support tower 1. The vacuum unit includes a vacuum pumping device, which is connected to the inner cavity of the furnace body unit. The vacuum pumping device can perform vacuuming on the furnace body unit 5.

[0035] The vertical vacuum sintering equipment of this utility model has a support tower 1 that can support the furnace body unit and the loading and unloading structure, and a loading and unloading mechanism 2 that can pick up and drive the powder and sintered parts to complete the loading and unloading operation, thereby improving the convenience of loading and unloading operation of the equipment. The furnace unit of this utility model adopts a split structure. The first motion mechanism 6 can drive the furnace cover 3 to move, so as to realize the opening and movement of the furnace cover 3, which facilitates the loading and unloading mechanism 2 to feed materials. The second motion mechanism 7 can drive the lower furnace body 5 to move, so as to realize the connection between the lower furnace body 5 and the upper furnace body 4. The lifting rod 8 passes through the furnace cover 3 and extends into the upper furnace body 4 and the lower furnace body 5. The lifting rod 8 can be connected to the powder, so as to ensure that the material can smoothly enter and exit the furnace unit. The lifting rod 8 is connected to the third motion mechanism 9, which can drive the lifting rod 8 to rotate, ensuring the uniform heating of the material during the sintering process. The third motion mechanism 9 can slide relative to the support tower 1, so that the lifting rod 8 can adapt to the movement of the furnace cover 3. A sealing valve 21 is set between the lower furnace body 5 and the upper furnace body 4. After the powder enters the lower furnace body 5, the vacuum unit can perform vacuum treatment on the furnace unit to ensure the smooth progress of the vacuum sintering process. The vertical vacuum sintering equipment of this utility model is equipped with a loading and unloading structure to realize material loading and unloading, which improves the ease of operation of the equipment; the furnace body unit adopts a split structure, which reduces the processing and manufacturing difficulty of the furnace body unit, ensures the heat preservation performance and use effect of the furnace body unit, improves the installation and maintenance convenience of the furnace body unit, reduces energy consumption, and thus greatly enhances the adaptability of the vertical vacuum sintering equipment.

[0036] The support tower 1 includes a top frame 10, a middle frame 11, and a bottom frame 12 arranged sequentially. The top frame 10, the middle frame 11, and the bottom frame 12 can be detachably connected for easy assembly. The furnace cover 3 and the hanging rod 8 are movably connected to the top frame 10, which facilitates the opening and operation of the furnace cover 3 and provides operating space for the furnace cover 3 and the hanging rod 8 to be raised. The upper furnace body 4 is fixed on the middle frame 11, and the lower furnace body 5 can slide back and forth to extend into the bottom frame 12 and connect with the upper furnace body 4.

[0037] To further improve the working efficiency of the loading and unloading mechanism 2, the mechanism includes a robotic arm slidably connected to the top frame 10. The sliding direction of the robotic arm is parallel to the vertical plane, and it can reciprocate vertically to meet the loading and unloading operation requirements. Simultaneously, the robotic arm can also move horizontally relative to the axis of the furnace unit to avoid interfering with the operation of the furnace cover 3. When loading and unloading operations are not required, the robotic arm can move to one side of the furnace unit, where it can pick up powder and sintered parts after powder sintering, improving the efficiency of loading and unloading operations. In practical applications, appropriate types of robotic arms can be selected according to different loading and unloading operation requirements, such as robotic arms capable of telescopic and rotating movements. It should be noted that selecting appropriate types of robotic arms based on specific loading and unloading conditions, as well as the specific structure of the robotic arm, are common knowledge to those skilled in the art and will not be elaborated upon here.

[0038] Specifically, the support tower 1 is equipped with a tower vertical slide rail 13. The first motion mechanism 6 includes a first transverse slide rail 14 and a first transverse slider. The first transverse slide rail 14 is slidably connected to the tower vertical slide rail 13. The sliding direction of the first transverse slide rail 14 is parallel to the vertical direction. The first transverse slide rail 14 and the tower vertical slide rail 13 cooperate to realize the reciprocating movement of the furnace cover 3 in the vertical direction, realizing the opening and closing of the furnace cover 3. The first transverse slider is slidably connected to the first transverse slide rail 14. The sliding direction of the first transverse slider is parallel to the horizontal direction. The furnace cover 3 is connected to the first transverse slider. The first transverse slider can drive the furnace cover 3 to move in the horizontal direction. When the loading and unloading mechanism 2 is loading, the furnace cover 3 can be moved horizontally to avoid affecting the loading and unloading operation and improve the working reliability of the equipment.

[0039] Correspondingly, the third motion mechanism 9 is connected to a second transverse slider and a second transverse slide rail 15. The second transverse slide rail 15 is slidably connected to the vertical slide rail 13 of the tower. The sliding direction of the second transverse slide rail 15 is parallel to the vertical direction, thereby driving the boom 8 to move up and down. The second transverse slide rail 15 is parallel to the first transverse slide rail 14 and is located above the first transverse slide rail 14. The second transverse slider is slidably connected to the second transverse slide rail 15. The sliding direction of the second transverse slider is parallel to the horizontal direction. The second transverse slider can drive the boom 8 to move left and right, facilitating loading and unloading while preventing the boom 8 from affecting the left and right movement of the furnace cover 3. In practical applications, the first transverse slider and the first transverse slider can be selected to move in a linked manner. In addition, both the first motion mechanism 6 and the second motion mechanism 7 are equipped with drive motors. The drive motors can use transmission mechanisms to achieve smooth power transmission. The transmission mechanism can be a gear transmission mechanism, a belt transmission mechanism, etc.

[0040] Meanwhile, the third motion mechanism 9 includes a rotary driver and a drive spindle 16. The rotary driver is connected to the second transverse slider, and its output end is connected to the drive spindle 16. The drive spindle 16 is detachably connected to the lifting rod 8. The rotary driver drives the drive spindle 16 to rotate, which in turn drives the lifting rod 8 and the powder to rotate, which is beneficial for the powder to be heated evenly and to ensure sintering quality. In practical applications, the sealing mechanism between the lifting rod 8 and the furnace cover 3 can be a magnetohydrodynamic seal to improve the sealing performance of the sealing mechanism.

[0041] It should also be noted that the second motion mechanism 7 includes a motion base 17, a mounting slide rail 18, and a movable base plate 19. The motion base 17 is located below the upper furnace body 4, the mounting slide rail 18 is mounted on the motion base 17, and the movable base plate 19 is slidably connected to the mounting slide rail 18. The lower furnace body 5 is mounted on the movable base plate 19. The second motion mechanism 7 can also be equipped with a drive motor, which drives the movable base plate 19 to move along the mounting slide rail 18, thereby driving the lower furnace body 5 to reciprocate and move it to the lower part of the upper furnace body 4 for easy connection. During equipment maintenance, the lower furnace body 5 can be removed for convenient operation.

[0042] More specifically, cooling channels are provided inside both the upper furnace body 4 and the lifting rod 8, and these channels can be connected to an external cooling medium source. After the sintered part is sintered, it can be lifted into the upper furnace body 4, and cooling medium can be introduced into the cooling channels to achieve rapid cooling of the sintered part. In practical applications, cooling water or other cooling media can be used. A sealing valve 21, generally a slide valve or a rotary valve, is provided between the upper furnace body 4 and the lower furnace body 5. After the product enters the upper furnace body 4 after production, the valve is closed to maintain the vacuum level of the lower furnace body 5. This allows the lower furnace body 5 to maintain a certain temperature, enabling it to quickly enter the production process for the next product, saving overall time. It should also be noted that the terms "powder," "sintered part," "material," and "product" mentioned in this utility model refer to different stages of the product and specific sintering types, which are well known to those skilled in the art and are not contradictory.

[0043] In this specific embodiment, the lower furnace body 5 adopts a multi-section structure, including intermediate sections 20 and end sections. Multiple sets of intermediate sections 20 are connected sequentially along the axis of the lower furnace body 5, and the end sections are respectively located at both ends of the intermediate sections 20. The multi-section structure of the lower furnace body 5 can meet the requirements of segmented heating, improve sintering efficiency, enhance the equipment's adaptability to various sintering conditions, and facilitate the maintenance of the lower furnace body 5.

[0044] Furthermore, within the middle section 20, a furnace core tube, a heating layer, and a heat insulation layer are sequentially stacked from the outside. The furnace core tube can accommodate the powder and the sintered product after powder sintering. The heating layer can heat the powder, and the heat insulation layer is made of heat-insulating material. The furnace core tube can be made of high-purity graphite, which is heat-resistant, has good thermal conductivity, and is located at the innermost part, forming a uniform thermal field to heat the internal products. The heating layer is used for heating, and the heat insulation layer is used to maintain the internal temperature and prevent heat from dissipating to the outer furnace wall and causing damage, thus extending the service life of the equipment. In other specific embodiments achievable with this invention, a cooling channel can also be provided within the lower furnace body 5 to meet different specific working conditions.

[0045] The end section is equipped with heat insulation material and can accommodate the powder and the sintered part after the powder is sintered, thereby reducing heat dissipation.

[0046] Furthermore, the vertical vacuum sintering equipment of this utility model also includes a heating unit, which includes a heating power supply and a control mechanism. The heating layer adopts an electric heating method, and the heating layer is electrically connected to the heating power supply. The control mechanism is communicatively connected to the heating power supply to control the heating power, improve the controllability of the equipment, and ensure the normal operation of the equipment.

[0047] It should also be noted that the vacuum unit also includes a vacuum pipeline. The vacuum pumping equipment is connected to the inner cavity of the furnace unit through the vacuum pipeline. The vacuum pipeline is equipped with a vacuum gauge and control valves to control the degree of vacuuming of the equipment.

[0048] In addition, the vacuum unit also includes a purge pipeline, which is connected to an external purge gas source. After the equipment has finished production, high-purity inert gas can be introduced into the furnace unit through the purge pipeline to break the vacuum level inside the furnace unit, balance the internal and external pressures, and then open the furnace to remove the product.

[0049] In operation, the vertical vacuum sintering equipment of this utility model utilizes the first motion mechanism 6 and the third motion mechanism 9 to move the furnace cover 3 and the lifting rod 8 to the upper end of the support tower 1 and simultaneously move them to one side of the furnace unit. The upper port of the upper furnace body 4 is in an open state. The mechanical arm of the loading and unloading mechanism 2 rotates to the front of the equipment and moves to the lower end. The powder is transferred to the mechanical arm via a transport vehicle. The mechanical arm moves upward and rotates when it reaches a fixed position. When the powder rotates to the center position of the upper furnace body 4, it descends. It pauses when the upper tail of the powder is below the lower end of the lifting rod 8. At this time, the first motion mechanism 6 and the third motion mechanism 9 operate, driving the furnace body rod and the lifting rod 8 to move synchronously. When the lifting rod 8 moves to the center position of the furnace unit, it pauses. At this time, the mechanical arm rises and connects the powder to the lifting rod 8. After connecting through a pin, the loading and unloading mechanical arm descends, detaches from the powder, retracts, and rotates to the front position of the equipment for standby. At this time, the sealing valve 21 is in the open position, and the first motion mechanism 6 and the third motion mechanism 9 work, driving the furnace body rod and the lifting rod 8 to descend. When the powder falls to the corresponding position in the temperature zone of the lower furnace body 5, it stops. The cavity cover falls to contact the upper furnace body 4 and then falls a certain distance before stopping. At this time, the vacuum unit starts to work. When the equipment vacuum degree reaches the required level, the heating unit starts to work, and the heating unit operates according to a certain heating process curve. After production is completed, heating is stopped and the holding temperature is set. First, the product is raised to the upper furnace body 4. At this time, the furnace body cover 3 is still in a sealed state and the bottom of the product is above the furnace body sealing valve 21. At this point, sealing valve 21 is closed, and the lower furnace body 5 remains under vacuum and will be maintained at a certain temperature. After the product cools for a period of time, the upper furnace body 4 is filled with high-purity inert gas. When the internal and external pressures are equal, the furnace cover 3 moves upward, opening the furnace cover 3. At this time, the furnace cover 3 and the lifting rod 8 rise synchronously, lifting the product from the furnace unit. When the product is lifted to the set height, the robotic arm of the unloading mechanism 2 rotates to the center position of the furnace unit to dock with the product and transports it to the docking position with the transport vehicle to unload the product. After the product is separated from the lifting rod 8, the lifting rod 8 and the furnace cover 3 move synchronously to one side to await the production of the next product. Repeating the above steps can achieve continuous production.

[0050] In practical applications, the hanger 8 can also be connected to the powder body in other ways to meet sintering requirements.

[0051] It should be noted that the heating process curve is determined according to the specific type of sintered product, which is common knowledge to those skilled in the art and will not be elaborated here.

[0052] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A vertical vacuum sintering equipment, characterized in that, include: The tower unit includes a supporting tower and a loading and unloading mechanism disposed on the supporting tower. The loading and unloading mechanism can drive the powder and the sintered parts after sintering of the powder to move in order to realize the loading and unloading of materials. The furnace body unit includes a furnace cover, an upper furnace body, and a lower furnace body arranged sequentially from top to bottom. The furnace cover is movably connected to the supporting tower via a first motion mechanism. The first motion mechanism can drive the furnace cover to reciprocate, thereby enabling the furnace cover and the upper furnace body to be detachably connected. A sealing element is provided between the furnace cover and the upper furnace body when they are connected. The upper furnace body is fixed to the supporting tower. The lower furnace body is connected to a second motion mechanism, which can drive the lower furnace body to reciprocate, thereby enabling the lower furnace body to reciprocate. The upper furnace body is detachably connected to the lower furnace body. When the lower furnace body is connected to the upper furnace body, a sealing valve is provided between them. A heating mechanism is provided inside the lower furnace body. A hanging rod is connected to the furnace body cover. The hanging rod can rotatably pass through the furnace body cover and can extend into the upper furnace body and the lower furnace body. A sealing mechanism is provided between the hanging rod and the furnace body cover. The powder to be sintered can be connected to the hanging rod. A third motion mechanism is connected to the hanging rod. The third motion mechanism can drive the hanging rod to rotate. The third motion mechanism is slidably connected to the support tower. The vacuum unit includes a vacuum pumping device that is connected to the inner cavity of the furnace unit and is capable of evacuating the furnace unit.

2. The vertical vacuum sintering equipment according to claim 1, characterized in that: The support tower includes a top frame, a middle frame and a bottom frame arranged in sequence. The top frame, the middle frame and the bottom frame are detachably connected. The furnace cover and the hanging rod are movably connected to the top frame. The upper furnace body is fixed on the middle frame. The lower furnace body can slide back and forth and extend into the bottom frame and connect with the upper furnace body. The loading and unloading mechanism includes a robotic arm that is slidably connected to the top frame. The sliding direction of the robotic arm is parallel to the vertical plane. The robotic arm is capable of picking up powder and sintered parts after the powder is sintered.

3. The vertical vacuum sintering equipment according to claim 1, characterized in that: The support tower is provided with a tower vertical slide rail. The first motion mechanism includes a first transverse slide rail and a first transverse slider. The first transverse slide rail is slidably connected to the tower vertical slide rail. The sliding direction of the first transverse slide rail is parallel to the vertical direction. The first transverse slider is slidably connected to the first transverse slide rail. The sliding direction of the first transverse slider is parallel to the horizontal direction. The furnace cover is connected to the first transverse slider.

4. The vertical vacuum sintering equipment according to claim 3, characterized in that: The third motion mechanism is connected to a second transverse slider and a second transverse slide rail. The second transverse slide rail is slidably connected to the vertical slide rail of the tower. The sliding direction of the second transverse slide rail is parallel to the vertical direction. The second transverse slide rail is parallel to the first transverse slide rail and is located above the first transverse slide rail. The second transverse slider is slidably connected to the second transverse slide rail. The sliding direction of the second transverse slider is parallel to the horizontal direction. The third motion mechanism includes a rotary driver and a drive spindle. The rotary driver is connected to the second transverse slider, and the output end of the rotary driver is connected to the drive spindle. The drive spindle is detachably connected to the boom.

5. The vertical vacuum sintering equipment according to claim 1, characterized in that: The second motion mechanism includes a motion base, a mounting slide rail, and a movable base plate. The motion base is located below the upper furnace body, the mounting slide rail is disposed on the motion base, the movable base plate is slidably connected to the mounting slide rail, and the lower furnace body is disposed on the movable base plate.

6. The vertical vacuum sintering equipment according to claim 1, characterized in that: Cooling channels are provided inside both the upper furnace body and the hanging rod, and these cooling channels can be connected to an external cooling medium source.

7. The vertical vacuum sintering equipment according to claim 1, characterized in that: The lower furnace body adopts a multi-section structure, which includes a middle section and end sections. There are multiple sets of middle sections, which are connected sequentially along the axis of the lower furnace body. The two end sections are respectively located at both ends of the multiple sets of middle sections.

8. The vertical vacuum sintering equipment according to claim 7, characterized in that: The middle section is provided with a furnace core tube, a heating layer and a heat insulation layer stacked in sequence from the inside to the outside. The furnace core tube can accommodate the powder and the sintered part after the powder is sintered. The heating layer can heat the powder. The heat insulation layer is made of heat insulation material. The end section is provided with heat insulation material and can accommodate powder and sintered parts after the powder is sintered.

9. The vertical vacuum sintering equipment according to claim 8, characterized in that: It also includes a heating unit, which includes a heating power supply and a control mechanism. The heating layer is electrically heated and is electrically connected to the heating power supply. The control mechanism is communicatively connected to the heating power supply.

10. The vertical vacuum sintering equipment according to claim 1, characterized in that: The vacuum unit also includes a vacuum pipeline, and the vacuum pumping equipment is connected to the inner cavity of the lower furnace body via the vacuum pipeline. A vacuum gauge and a control valve are installed on the vacuum pipeline. The vacuum unit also includes a purge line, which is connected to an external purge gas source.

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