A vacuum sintering boat loading mechanism for large diameter cemented carbide pipes

Abstract

The present invention provides a vacuum sintering boat loading mechanism for large-diameter cemented carbide pipes, and belongs to the technical field of cemented carbide sintering. It comprises a furnace body, a vacuum device is installed at one end of the furnace body, a degreasing device is installed at the bottom of the furnace body, a water pipeline is installed on one side of the furnace body, a process gas pipeline is installed at one end of the water pipeline, an electrical operating device is installed at the other end of the furnace body, and a control center is also installed at the other end of the furnace body. The present invention provides power output for the coordinated operation of subsequent devices by setting a clamping adjustment component and a limit adjustment component, ensures stable operation of the sintering process, reduces the risk of movement and falling of the pipe, ensures production safety, and the limit helps to evenly heat the pipe, thereby improving product quality. At the same time, the driving device provides power output for the clamping device, reduces manual intervention, and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cemented carbide sintering, in particular to a vacuum sintering boat loading mechanism for cemented carbide large-diameter pipes. Background Art

[0002] Cemented carbide is prepared by powder metallurgy technology. In the general process, the mixture is prepared first, then the cemented carbide is molded, and then the pressed blank is processed. The formed cemented carbide is loaded into the furnace for sintering, and finally the alloy product is produced. The cemented carbide sintering process is a crucial step in alloy production. Along with physical and chemical changes, the size, shape, material properties and performance of the product will change, so the use of the boat loading device is also extremely important.

[0003] The cemented carbide boat loading device is a device used to fix and protect cemented carbide products during vacuum sintering. Its main function is to ensure the stable position of cemented carbide products during vacuum sintering and avoid deformation, thereby improving product quality.

[0004] When sintering existing large-diameter cemented carbide pipes, there is no suitable large-size boat loading device, which results in that the large-diameter pipes need to be manually pushed into the furnace body during sintering, which is inconvenient for loading and unloading, and is time-consuming and consumes the workers' energy. In addition, the process is slow and the production efficiency is low. At the same time, when the large-diameter pipes enter the furnace body, it is difficult to clamp the pipes, resulting in uneven heating of the pipes at high temperatures, resulting in inconsistent organizational properties after sintering. At the same time, it is very easy to soften and deform under high-temperature environments, which not only affects the external dimensions of the pipes, but may also affect their internal structure and performance, resulting in a decrease in product quality. In addition, when the clamping device becomes loose without an infinite positioning function, the pipes cannot be effectively supported by the friction, and will bend or deform due to high-temperature softening and gravity. The loose clamping device will cause uneven heating of the pipes, resulting in a decrease in sintering quality, thereby reducing the overall performance and life of the pipes. Therefore, the present application provides a vacuum sintering boat loading mechanism for large-diameter cemented carbide pipes to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a vacuum sintering boat loading mechanism for large-diameter cemented carbide pipes to solve the problem that there is no suitable large-size boat loading device when sintering large-diameter cemented carbide pipes in the existing technology, which results in that the large-diameter pipes need to be manually pushed into the furnace body during sintering, which is inconvenient for loading and unloading, and is time-consuming and labor-intensive. The process flow is slow and the production efficiency is low. At the same time, when the large-diameter pipes enter the furnace body, it is difficult to clamp the pipes, which results in uneven heating of the pipes at high temperatures, resulting in inconsistent organizational properties after sintering. At the same time, softening and deformation are very likely to occur in a high-temperature environment, which not only affects the external dimensions of the pipes, but may also affect their internal structure and performance, resulting in a decrease in product quality. In addition, when the clamping device becomes loose without an infinite positioning function, the pipes cannot be effectively supported by the friction, and will bend or deform due to high-temperature softening and gravity. The loose clamping device will cause uneven heating of the pipes, resulting in a decrease in sintering quality, thereby reducing the overall performance and life of the pipes.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A vacuum sintering boat loading mechanism for large-diameter cemented carbide pipes comprises a furnace body, a vacuum device is installed at one end of the furnace body, a degreasing device is installed at the bottom of the furnace body, a water pipeline is installed on one side of the furnace body, a process gas pipeline is installed on one end of the water pipeline, an electrical operating device is installed on the other end of the furnace body, and a control center is also installed on the other end of the furnace body. An inner furnace is installed inside the furnace body, an inner gear ring is rotatably installed on the inner wall of the inner furnace, an inner liner is plugged into the tail of the furnace body, the inner liner is arranged inside the inner furnace and the inner gear ring, a pulley support frame is installed at the bottom of the inner liner, a slide slot bracket is plugged into one side of the furnace body, the upper end of the slide slot bracket is plugged into the inner furnace and the inner wall of the inner liner, and the slide slot bracket is A friction plate is arranged at the top, a slider is slidably arranged on the top inner wall of the friction plate, a boat frame is installed on the top of the slider, and a vacuum pressure box is installed on one side of the furnace body; it also includes a driving adjustment component, a driving adjustment component is installed at the bottom of the inner tank, and the driving adjustment component is used to carry large-diameter pipes and drive the internal gear ring; it includes a clamping adjustment component, a clamping adjustment component is installed on the top of the inner tank, and the clamping adjustment component is used to clamp and fix the large-diameter pipe; it includes a limit adjustment component, a limit adjustment component is installed on the inner wall of the inner furnace, and the limit adjustment component is used to limit the internal gear ring; a clamping adjustment component is arranged above the driving adjustment component, and a limit adjustment component is arranged at one end of the clamping adjustment component.

[0008] Optionally, the drive adjustment assembly includes a first toothed cylinder, which is installed at the bottom of the inner container, and a spring is sleeved on the surface of the first toothed cylinder, and the spring is sleeved on the surface of the first toothed cylinder.

[0009] Optionally, a pulley seat is installed on the top of the first toothed cylinder, a conveying crawler is installed on the surface of the pulley seat, and a first long-axis gear rod is meshedly connected to the bottom of the first toothed cylinder.

[0010] Optionally, the clamping and adjusting assembly includes a rotating shaft base, which is installed on the outer surface of the inner container, and one side of the rotating shaft base is rotatably connected to a second long-axis gear rod, and the second long-axis gear rod is meshed with the internal gear ring.

[0011] Optionally, a sealing fixing ring is installed on the surface of the inner liner, and the sealing fixing ring is slidably connected to the inside of the sealing fixing ring with a toothed sliding rod. The toothed sliding rod is provided with a tooth block outside the inner liner of the internal sliding part of the sealing fixing ring, and the tooth block is meshed with the second long-axis tooth rod, and a connecting seat is installed at the bottom end of the toothed sliding rod.

[0012] Optionally, a cylinder is installed inside the connecting seat, a contact block is installed at the bottom of the cylinder, a connecting rod is rotatably connected to the top of the cylinder, the connecting rod is installed at an angle, and a fixed shaft is installed at one end of the connecting rod.

[0013] Optionally, a rotating shaft is installed at one end of the connecting rod, a support rod is rotatably connected to the surface of the rotating shaft, a clamping block is rotatably connected to the bottom of the support rod, and the support rod is arranged in the middle of the clamping block.

[0014] Optionally, the limit adjustment assembly includes a handwheel rod, the handwheel rod is installed on the top of the vacuum pressure box, a threaded column is installed at the bottom of the handwheel rod, and a sleeve is threadedly connected to the surface of the threaded column.

[0015] Optionally, a third long-axis gear rod is sleeved on the surface of the handwheel rod, a second toothed cylinder is meshingly connected on the surface of the third long-axis gear rod, a sleeve is sleeved on the end of the second toothed cylinder, and the end of the second toothed cylinder slides inside the sleeve.

[0016] Optionally, a rotating wheel is installed on one side of the sleeve, a positioning triangle block is installed on the top of the rotating wheel, a connecting shaft is installed on the end of the second toothed cylinder, and the connecting shaft is rotatably connected to the bottom of the positioning triangle block.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, by setting a driving adjustment component, utilizing the cooperation between the conveying crawler, the pulley seat, the first toothed cylinder, the spring and the first long-axis gear rod, the large-diameter pipe is transported into the furnace body through the boat frame. When it contacts the conveying crawler, the conveying crawler operates to transport the pipe while slowly moving downward, tightening the compression spring to rotate the first long-axis gear rod, thereby providing power for the rotation of the internal gear ring and providing power output for the coordinated operation of subsequent devices, thereby ensuring stable operation of the sintering process.

[0019] By setting up a clamping adjustment component, using a rotating shaft base, a second long-axis gear rod, a toothed sliding rod, a sealing fixed collar, a connecting seat, a cylinder, a contact block, a connecting rod, a fixed shaft, a rotating shaft, a support rod and a clamping block, the pipe is moved inside the furnace body while the clamping device begins to move toward the pipe, and according to the degree of curvature of the pipe, the clamping angle is adjusted to fit the pipe tightly, providing a support point to prevent bending and deformation during high-temperature sintering, reduce the risk of movement or falling of the pipe during the sintering process, and ensure production safety. At the same time, the driving device provides power output for the clamping device, which reduces manual intervention and improves production efficiency.

[0020] By setting a limit adjustment component, using a handwheel rod, a sleeve, a threaded column, a third long-axis gear rod, a second toothed cylinder, a sleeve, a connecting shaft, a positioning triangle block and a rotating wheel, the inner gear ring is limited and fixed through the limit adjustment component, thereby ensuring the stability of the clamping device. At the same time, during the sintering process, the large-diameter pipe is prevented from moving and deforming due to high temperature or external force, thereby ensuring the stability of the pipe shape and ensuring production safety. The risk of pipe falling off and rupture is reduced, and damage to equipment and personnel is avoided. The production safety is improved. The limit helps to evenly heat the pipe, thereby improving product quality and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0022] Figure 1 It is a schematic diagram of the main perspective structure of the vacuum sintering boat loading mechanism for cemented carbide large diameter pipes;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the vacuum sintering boat loading mechanism for cemented carbide large-diameter pipes from the side view;

[0024] Figure 3 It is a three-dimensional structural diagram of the vacuum sintering boat loading mechanism for cemented carbide large-diameter pipes from another perspective;

[0025] Figure 4 It is a schematic diagram of the main plane structure of the furnace body;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure inside the furnace;

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the position relationship between the friction plate and the slider;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the internal gear ring;

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the positional relationship between the internal gear ring and the drive adjustment assembly;

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the clamping and adjusting component;

[0031] Fig.10 It is a three-dimensional structural diagram of the position relationship between the positioning triangle block and the inner gear ring;

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure of the limit adjustment component.

[0033] Reference numerals:

[0034] 1. Furnace body; 2. Vacuum device; 3. Degreasing device; 4. Water pipeline; 5. Process gas path device; 6. Drive adjustment component; 61. Conveyor track; 62. Pulley seat; 63. First toothed cylinder; 64. Spring; 65. First long axis gear rod; 7. Clamping adjustment component; 71. Rotating shaft base; 72. Second long axis gear rod; 73. Toothed slide rod; 74. Sealing fixed collar; 75. Connecting seat; 76. Cylinder; 77. Contact block; 78. Connecting rod; 79. Fixed shaft; 710. Rotating shaft; 71 1. Support rod; 712. Clamping block; 8. Limit adjustment assembly; 81. Handwheel rod; 82. Sleeve; 83. Threaded column; 84. Third long axis gear rod; 85. Second toothed cylinder; 86. Sleeve; 87. Connecting shaft; 88. Positioning triangle block; 89. Rotating wheel; 9. Electrical operating device; 10. Control center; 11. Inner furnace; 12. Slide bracket; 13. Vacuum pressure box; 14. Inner gear ring; 15. Boat mounting frame; 16. Pulley support frame; 17. Inner tank; 18. Friction plate; 19. Slider.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0036] The following is a detailed description of a vacuum sintering boat loading mechanism for a large diameter cemented carbide pipe provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0038] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0039] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0040] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0041] like Figures 1 to 11As shown, an embodiment of the present invention provides a vacuum sintering boat loading mechanism for cemented carbide large-diameter pipes, comprising a furnace body 1, a vacuum device 2 is installed at one end of the furnace body 1, a degreasing device 3 is installed at the bottom of the furnace body 1, a water pipeline 4 is installed on one side of the furnace body 1, a process gas pipeline device 5 is installed at one end of the water pipeline 4, an electrical operating device 9 is installed at the other end of the furnace body 1, and a control center 10 is also installed at the other end of the furnace body 1, an inner furnace 11 is installed inside the furnace body 1, an inner gear ring 14 is rotatably installed on the inner wall of the inner furnace 11, an inner liner 17 is plugged into the tail of the furnace body 1, the inner liner 17 is arranged inside the inner furnace 11 and the inner gear ring 14, a pulley support frame 16 is installed at the bottom of the inner liner 17, a slide slot bracket 12 is plugged into one side of the furnace body 1, and the upper end of the slide slot bracket 12 is plugged into the inner wall of the inner furnace 11 and the inner liner 17. A friction plate 18 is provided at the top of the slide bracket 12, a slider 19 is slidably provided on the inner wall of the top of the friction plate 18, a boat frame 15 is installed on the top of the slider 19, and a vacuum pressure box 13 is installed on one side of the furnace body 1; it also includes a driving adjustment component 6, a driving adjustment component 6 is installed at the bottom of the inner tank 17, and the driving adjustment component 6 is used to carry large-diameter pipes and drive the inner gear ring 14; it includes a clamping adjustment component 7, a clamping adjustment component 7 is installed on the top of the inner tank 17, and the clamping adjustment component 7 is used to clamp and fix the large-diameter pipe; it includes a limit adjustment component 8, a limit adjustment component 8 is installed on the inner wall of the inner furnace 11, and the limit adjustment component 8 is used to limit the inner gear ring 14; a clamping adjustment component 7 is provided above the driving adjustment component 6, and a limit adjustment component 8 is provided at one end of the clamping adjustment component 7.

[0042] As an implementation method in this embodiment, Figures 4 to 8As shown, the driving and adjusting component 6 includes a first toothed cylinder 63, which is installed at the bottom of the inner liner 17, and a spring 64 is sleeved on the surface of the first toothed cylinder 63, and the spring 64 is sleeved on the surface of the first toothed cylinder 63. A pulley seat 62 is installed on the top of the first toothed cylinder 63, and a conveying crawler 61 is installed on the surface of the pulley seat 62. The bottom of the first toothed cylinder 63 is meshed and connected with a first long-axis toothed rod 65. When the pipe moves by rolling on the pulley support frame 16 to the driving and adjusting component 6, the pipe begins to contact one end surface of the conveying crawler 61, and then the conveying crawler 61 starts to rotate under the thrust of the pipe, driving the pipe to continue to move. When the pipe continues to move on the surface of the conveying crawler 61, Its own volume slowly covers the surface of the conveyor crawler 61. At this time, the pipe is slowly approaching the pulley seat 62 while moving. When the pipe is close to the pulley on the top of the pulley seat 62 little by little, its own weight is also pressing the pulley seat 62 downward. When the pulley seat 62 moves downward, the first toothed cylinder 63 installed at the bottom of the pulley seat 62 slides downward at the sealed sliding connection inside the inner liner 17. At this time, when the first toothed cylinder 63 moves downward, it compresses the spring 64 to contract between the surface of the inner liner 17 and the bottom of the pulley seat 62. At the same time, the first long-axis gear rod 65 meshingly connected to the bottom of the first toothed cylinder 63 begins to rotate. When the first long-axis gear rod 65 rotates, the inner gear ring 14 meshingly connected at the other end begins to rotate.

[0043] As an implementation method in this embodiment, Figures 6 to 9As shown, the clamping adjustment assembly 7 includes a rotating shaft base 71, which is installed on the outer surface of the inner liner 17. One side of the rotating shaft base 71 is rotatably connected to a second long-axis gear rod 72, and the second long-axis gear rod 72 is meshed with the inner gear ring 14. A sealing fixed collar 74 is installed on the surface of the inner liner 17, and a toothed slide rod 73 is slidably connected inside the sealing fixed collar 74. The toothed slide rod 73 is provided with a tooth block outside the inner liner 17 of the sliding part inside the sealing fixed collar 74, and the tooth block is meshed with the second long-axis gear rod 72. A connecting seat 75 is installed at the bottom end of the toothed slide rod 73. A cylinder 76 is installed inside the socket 75, a contact block 77 is installed at the bottom of the cylinder 76, a connecting rod 78 is rotatably connected to the top of the cylinder 76, the connecting rod 78 is installed in an inclined manner, a fixed shaft 79 is installed at one end of the connecting rod 78, a rotating shaft 710 is installed at one end of the connecting rod 78, a support rod 711 is rotatably connected to the surface of the rotating shaft 710, a clamping block 712 is rotatably connected to the bottom of the support rod 711, and the support rod 711 is located in the middle of the clamping block 712. When the inner gear ring 14 starts to rotate, the clamping adjustment assembly 7 meshing with it starts to operate. First, the rotating shaft 79 installed on the surface of the inner liner 17 The second long shaft gear rod 72 on the shaft base 71 begins to rotate together with the inner gear ring 14. When the meshing part of the second long shaft gear rod 72 and the inner gear ring 14 begins to rotate, the toothed slide rod 73 meshed with the other end begins to move inside the surrounding sealing fixed ring 74 toward the pipe direction. When the toothed slide rod 73 moves, the connecting seat 75 installed at the bottom of the toothed slide rod 73 moves synchronously. When the connecting seat 75 moves, it drives the contact block 77 to move together. When the contact block 77 contacts the surface of the pipe, the contact block 77 begins to move upward under pressure. At the same time, the contact block 77 moves under pressure. The cylinder 76 installed on the top moves upward inside the connecting seat 75. When the cylinder 76 moves, the connecting rod 78 installed on the top of the cylinder 76 moves together. When the ends of the connecting rod 78 move upward together, the other end of the connecting rod 78 starts to move downward under the action of the fixed shaft 79, and at the same time drives the rotating shaft 710 and the rotatably connected support rod 711 to drive the clamping block 712 to fit the surface of the pipe. Since the support rod 711 is rotatably connected to the middle of the clamping block 712, the tilt angle is adjusted slowly by the pressure adaptively until it is closely fitted to the surface of the pipe for clamping and supporting.

[0044] As an implementation method in this embodiment, Figures 7 to 11As shown, the limit adjustment assembly 8 includes a handwheel rod 81, which is installed on the top of the vacuum pressure box 13, and a threaded column 83 is installed at the bottom of the handwheel rod 81. The surface of the threaded column 83 is threadedly connected with a sleeve 82, and the surface of the handwheel rod 81 is sleeved with a third long-axis gear rod 84, and the surface of the third long-axis gear rod 84 is meshingly connected with a second toothed cylinder 85, and the end of the second toothed cylinder 85 is sleeved with a sleeve 86, and the end of the second toothed cylinder 85 slides inside the sleeve 86, and a rotating wheel 89 is installed on one side of the sleeve 86, and a positioning triangle block 88 is installed on the top of the rotating wheel 89, and a connecting shaft 87 is installed at the end of the second toothed cylinder 85, and the connecting shaft 87 is rotatably connected to the bottom of the positioning triangle block 88. When the operator rotates the handwheel rod 81 to adjust the vacuum pressure box 13, the handwheel rod 81 rotates, driving the threaded column 83 to rotate in the sleeve 82, and at the same time When the third long-axis gear rod 84 rotates synchronously in the sleeve 82, when the third long-axis gear rod 84 starts to rotate, the second toothed cylinder 85 engaged at one end moves toward the pipe in the furnace body 1. When the second toothed cylinder 85 moves forward inside the sleeve 86, the connecting shaft 87 installed at one end of the second toothed cylinder 85 is pushed, driving the top of the positioning triangle block 88 connected to the other end to rotate around the axis of the rotating wheel 89 toward the handwheel rod 81. When the positioning triangle block 88 rotates, the top is stuck between two adjacent teeth of the inner gear ring 14 to prevent the inner gear ring 14 from reversing. At the same time, the oil inside the vacuum pressure box 13 lifts the friction plate 18 inside the slide bracket 12, so that the friction plate 18 presses against the slider 19 inside the slide bracket 12 to fix it. When the slider 19 is fixed, the boat frame 15 remains motionless, so that the boat frame 15 is fixed and difficult to move.

[0045] The working principle of the technical solution provided by the present invention is as follows:

[0046] First, check the appearance of the furnace body 1 to confirm whether the vacuum device 2, degreasing device 3, water pipeline 4, process gas device 5 and electrical operating device 9 are operating normally, and display the real-time data of each device through the control center 10. Then open the cover door of the furnace body 1 to check the internal environment of the inner furnace 11. The staff slides and pulls the boat rack 15 out from the slide bracket 12 on the inner wall of the inner tank 17, puts the pressed large-diameter pipe on the boat rack 15, and then slowly pushes it into the inner tank 17. Then the large-diameter pipe continues to move inward on the pulley support frame 16 and stops at the end.

[0047] When the pipe moves by rolling on the pulley support frame 16 to the driving adjustment component 6, the pipe begins to contact the surface of one end of the conveying crawler 61, and then the conveying crawler 61 starts to rotate under the thrust of the pipe, driving the pipe to continue to move. When the pipe continues to move on the surface of the conveying crawler 61, its own volume slowly covers the surface of the conveying crawler 61. At this time, the pipe is moving while slowly approaching the pulley seat 62. When the pipe approaches the pulley on the top of the pulley seat 62 little by little, its own weight The pulley seat 62 is also pressed downward. When the pulley seat 62 moves downward, the first toothed cylinder 63 installed at the bottom of the pulley seat 62 slides downward at the sealed sliding connection inside the inner liner 17. At this time, when the first toothed cylinder 63 moves downward, it compresses the spring 64 to shrink between the surface of the inner liner 17 and the bottom of the pulley seat 62. At the same time, the first long-axis gear rod 65 meshingly connected to the bottom of the first toothed cylinder 63 begins to rotate. When the first long-axis gear rod 65 rotates, the inner gear ring 14 meshingly connected at the other end begins to rotate.

[0048] When the inner gear ring 14 starts to rotate, the clamping adjustment assembly 7 meshing with it starts to operate. First, the second long-axis gear rod 72 on the rotating shaft base 71 installed on the surface of the inner liner 17 starts to rotate together with the inner gear ring 14. When the part of the second long-axis gear rod 72 meshing with the inner gear ring 14 starts to rotate, the toothed slide rod 73 meshing with the other end starts to move inside the surrounding sealing fixed ring 74 toward the pipe direction. When the toothed slide rod 73 moves, the connecting seat 75 installed at the bottom of the toothed slide rod 73 moves synchronously. When the connecting seat 75 moves, it drives the contact block 77 to move together. When the contact block 77 contacts the surface of the pipe, the contact block 77 starts to be compressed. When the contact block 77 moves upward, the cylinder 76 installed on the top of the contact block 77 moves upward inside the connecting seat 75. When the cylinder 76 moves, the connecting rod 78 installed on the top of the cylinder 76 moves together. When the ends of the connecting rod 78 move upward together, under the action of the fixed shaft 79, the other end of the connecting rod 78 starts to move downward, and at the same time drives the rotating shaft 710 and the rotatably connected support rod 711 to drive the clamping block 712 to fit the surface of the pipe. Since the support rod 711 is rotatably connected to the middle part of the clamping block 712, it will then be pressure-adapted and slowly adjust the inclination angle until it is tightly fitted to the surface of the pipe for clamping and support.

[0049] When the pipe stops moving, the clamping adjustment component 7 is in close contact with the surface of the pipe, and the limit adjustment component 8 starts to operate. The operator rotates the handwheel rod 81 to adjust the vacuum pressure box 13. While the handwheel rod 81 rotates, the threaded column 83 is driven to rotate in the sleeve 82. At the same time, the third long-axis gear rod 84 rotates synchronously in the sleeve 82. When the third long-axis gear rod 84 starts to rotate, the second toothed cylinder 85 with one end meshingly connected moves toward the pipe in the furnace body 1. When the second toothed cylinder 85 moves forward inside the sleeve 86, the connecting shaft 87 installed at one end of the second toothed cylinder 85 is pushed up. The top of the positioning triangle block 88 connected to the other end is driven to rotate around the axis of the rotating wheel 89 toward the handwheel rod 81. When the positioning triangle block 88 rotates, the top is stuck between two adjacent teeth of the inner gear ring 14 to prevent the inner gear ring 14 from reversing; at the same time, the oil inside the vacuum pressure box 13 pushes another hydraulic cylinder through the pipeline to lift the friction plate 18 inside the slide bracket 12, so that the friction plate 18 presses against the slider 19 inside the slide bracket 12 to fix it. When the slider 19 is fixed, the boat frame 15 remains motionless, making it difficult to move. Finally, the staff closes the cover door of the furnace body 1 and locks it, and then starts vacuum sintering.

[0050] When the sintering of the large diameter pipe is completed, the staff rotates the handwheel rod 81 counterclockwise to make it rotate and drive the second toothed cylinder 85 to move in the direction of the handwheel rod 81. At this time, the positioning triangle block 88 turns in the opposite direction around the axis of the rotating wheel 89, and the oil in the vacuum pressure box 13 begins to reset, pulling another hydraulic cylinder. At this time, the friction plate 18 inside the slide bracket 12 begins to descend, and then the friction plate 18 is separated from the slider 19. After the slider 19 is no longer subjected to the top push and friction force, the internal gear ring 14 is unlocked. At this time, the staff opens the cover door of the furnace body 1 and pulls out the boat rack 15. After the large diameter pipe leaves, there is no more downward pressure. At this time, the pulley seat 62 and the conveying crawler 61 are bounced up by the elastic force of the spring 64, and the internal gear ring 14 is driven in the same way as above to rotate, driving the contact block 77 and the clamping block 712 to retract upward, loosening the large diameter pipe. At this time, it is convenient for the staff to take out the large diameter pipe after cooling, and complete the rapid material unloading work after sintering.

[0051] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum sintering boat loading mechanism for large diameter cemented carbide pipes, comprising a furnace body, characterized in that: A vacuum device is installed at one end of the furnace body, a degreasing device is installed at the bottom of the furnace body, a water pipeline is installed on one side of the furnace body, a process gas pipeline device is installed on one end of the water pipeline, an electrical operating device is installed on the other end of the furnace body, and a control center is also installed on the other end of the furnace body. An inner furnace is installed inside the furnace body, an inner gear ring is rotatably installed on the inner wall of the inner furnace, an inner liner is plugged into the tail of the furnace body, the inner liner is arranged inside the inner furnace and the inner gear ring, a pulley support frame is installed at the bottom of the inner liner, a slide bracket is plugged into one side of the furnace body, the upper end of the slide bracket is plugged into the inner furnace and the inner wall of the inner liner, a friction plate is arranged on the top of the slide bracket, a slider is slidably arranged on the top inner wall of the friction plate, a boat mounting frame is installed on the top of the slider, and a vacuum pressure box is installed on one side of the furnace body; A driving and adjusting assembly is installed at the bottom of the inner tank, and the driving and adjusting assembly is used to carry the large-diameter pipe and drive the internal gear ring; A clamping and adjusting component is installed on the top of the inner liner, and the clamping and adjusting component is used to clamp and fix large-diameter pipes; A limit adjustment component, the inner wall of the inner furnace is installed with a limit adjustment component, and the limit adjustment component is used to limit the position of the inner gear ring; A clamping adjustment component is disposed above the driving adjustment component, and a limit adjustment component is disposed at one end of the clamping adjustment component; The drive adjustment assembly comprises a first toothed cylinder, the first toothed cylinder is mounted on the bottom of the inner container, a spring is sleeved on the surface of the first toothed cylinder, and the spring is sleeved on the surface of the first toothed cylinder; A pulley seat is installed on the top of the first toothed cylinder, a conveying crawler is installed on the surface of the pulley seat, and a first long-axis gear rod is meshedly connected to the bottom of the first toothed cylinder.

2. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 1, characterized in that: The clamping and adjusting assembly comprises a rotating shaft base, which is mounted on the outer surface of the inner container. A second long-axis gear rod is rotatably connected to one side of the rotating shaft base, and the second long-axis gear rod is meshed with the inner gear ring.

3. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 2, characterized in that: A sealing fixing ring is installed on the surface of the inner liner, and a toothed sliding rod is slidably connected inside the sealing fixing ring. The toothed sliding rod is provided with a tooth block outside the inner liner of the internal sliding part of the sealing fixing ring, and the tooth block is meshed with the second long-axis tooth rod, and a connecting seat is installed at the bottom end of the toothed sliding rod.

4. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 3, characterized in that: A cylinder is installed inside the connecting seat, a contact block is installed at the bottom of the cylinder, a connecting rod is rotatably connected to the top of the cylinder, the connecting rod is installed in an inclined manner, and a fixed shaft is installed at one end of the connecting rod.

5. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 4, characterized in that: A rotating shaft is installed at one end of the connecting rod, a support rod is rotatably connected to the surface of the rotating shaft, a clamping block is rotatably connected to the bottom of the support rod, and the support rod is arranged in the middle of the clamping block.

6. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 5, characterized in that: The limit adjustment assembly comprises a handwheel rod, which is installed on the top of the vacuum pressure box. A threaded column is installed on the bottom of the handwheel rod, and a sleeve is threadedly connected to the surface of the threaded column.

7. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 6, characterized in that: The surface of the handwheel rod is sleeved with a third long-axis gear rod, the surface of the third long-axis gear rod is meshingly connected with a second toothed cylinder, the end of the second toothed cylinder is sleeved with a sleeve, and the end of the second toothed cylinder slides inside the sleeve.

8. The vacuum sintering boat loading mechanism for cemented carbide large diameter pipes according to claim 7, characterized in that: A rotating wheel is installed on one side of the sleeve, a positioning triangle block is installed on the top of the rotating wheel, a connecting shaft is installed on the end of the second toothed cylinder, and the connecting shaft is rotatably connected to the bottom of the positioning triangle block.

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