Vacuum welding device and method for titanium carbide-based steel bond hard alloy and high-chromium cast steel

Abstract

The invention discloses a vacuum welding device and method for titanium carbide-based steel bond hard alloy and high-chromium cast steel, and relates to the technical field of vacuum welding. The vacuum welding device comprises a machine body, an air extractor is arranged at the top of the machine body, a shielding gas spraying device is arranged at the top of the machine body, and an electric telescopic rod is fixedly installed in the machine body; a fixing rod is fixedly installed at the output end of the electric telescopic rod, welding equipment is arranged at the top of the fixing rod, a welding head is fixedly installed at the bottom of the welding equipment, a conveying device is arranged in the machine body, a clamping device is arranged in the machine body, and a ventilation device is arranged at the top of the machine body. And the conveying device comprises two fixing plates, a first rotating column, two second rotating columns, a connecting rod, a first transmission belt, a second transmission belt and a welding table, welding parts needing to be welded are conveyed into the machine body through movement of the welding table, the requirements for manual operation and manual carrying are reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum welding, and particularly to a vacuum welding device and a welding method for titanium carbide-based steel-bonded cemented carbide and high-chromium cast steel. Background Art

[0002] A vacuum welding device is a device used for welding operations in a vacuum environment. By placing the welding area in a sealed vacuum chamber, the presence of oxygen and other gases in the air is reduced, ensuring that the welding process is purer and more precise.

[0003] The patent with the patent publication number CN220259793U relates to the technical field of vacuum welding. This application provides a vacuum welding device, including: a first housing having a first space therein; a plurality of heating bodies arranged in the first direction in the first space, each heating body having a first end and a second end along the first direction, and a heating surface on one side of the heating body close to the first end for placing the workpiece to be welded; a heating component is provided on one side of the heating body close to the first end, and heat is transferred between the heating component and the heating body in a heat conduction manner; a cooling component is provided on one side of the heating body close to the second end inside the heating body for cooling the heating body. This solution uses the heating component to conduct heat to the heating surface, avoiding radiant heating, and the temperature distribution on the heating surface is more uniform; and there are a plurality of heating bodies, so that multiple workpieces to be welded can be welded simultaneously, improving the welding efficiency.

[0004] In the above patent, by using the heating component to conduct heat to the heating surface, radiant heating is avoided, and the temperature distribution on the heating surface is more uniform; and there are a plurality of heating bodies, so that multiple workpieces to be welded can be welded simultaneously, improving the welding efficiency. However, it is difficult to automatically feed the workpiece into the device when placing the workpiece. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a vacuum welding device and a welding method for titanium carbide-based steel-bonded cemented carbide and high-chromium cast steel, which solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A vacuum welding device for titanium carbide-based steel-bonded cemented carbide and high-chromium cast steel, comprising a machine body, wherein an air extraction device is arranged at the top of the machine body, a protective gas spraying device is arranged at the top of the machine body, an electric telescopic rod is fixedly installed inside the machine body, a fixed rod is fixedly installed at the output end of the electric telescopic rod, a welding device is arranged at the top of the fixed rod, a welding head is fixedly installed at the bottom of the welding device, a conveying device is arranged inside the machine body, a clamping device is arranged inside the machine body, and a ventilation device is arranged at the top of the machine body; Among them, the conveying device includes two fixing plates, a first rotating column, two second rotating columns, a connecting rod, a first transmission belt, a second transmission belt and a welding table. The fixing plates are fixedly installed at the bottom of the inner wall of the machine body. The first rotating column is rotatably installed on the inner wall of the machine body. The two second rotating columns are rotatably installed between the two fixing plates. The first rotating column and the second rotating columns are connected by the first transmission belt. One end of the connecting rod is fixedly installed on the right side of the first transmission belt, and the other end of the connecting rod is fixedly installed on the left side of the fixed rod. The two second rotating columns are connected by the second transmission belt. The welding table is fixedly installed on the back of the second transmission belt. By moving the fixed rod, the welding device starts to move. When the welding device moves, the welding head starts to move. While the fixed rod moves, the connecting rod starts to move. When the connecting rod moves, the first transmission belt starts to rotate. When the first transmission belt rotates, the second rotating column starts to rotate. When the second rotating column rotates, the second transmission belt starts to rotate. When the second transmission belt rotates, the welding table starts to move.

[0007] According to the above technical solution, the connecting rod contacts the first transmission belt and the fixed rod, the second transmission belt contacts the welding table, and a ventilation opening is provided at the top of the machine body. By the connecting rod contacting the first transmission belt and the fixed rod, it is ensured that the first transmission belt can be driven to rotate when the connecting rod moves. By the second transmission belt contacting the welding table, it is ensured that the welding table can be driven to move when the second transmission belt rotates. By providing the ventilation opening, it is ensured that the ventilation inside the machine body is normal.

[0008] According to the above technical solution, the clamping device includes a protective plate, a first sealing strip, a push rod and a second sealing strip. The protective plate is slidably installed on the left side of the machine body. The first sealing strip is fixedly installed on the right side of the protective plate. The push rod is fixedly installed at the front of the welding table. The second sealing strip is fixedly installed on the left side of the machine body. When the welding table moves, the push rod starts to move. When the movement of the push rod stops, it stops pushing the protective plate. Subsequently, the protective plate starts to move and reset under the action of the spring. When the protective plate moves, the first sealing strip starts to move. When the first sealing strip moves, it contacts and coincides with the second sealing strip, sealing the inside of the machine body.

[0009] According to the above technical solution, the clamping device further includes an inclined plane rod, a first elastic telescopic rod, a clamping plate and an inclined plane block. The inclined plane rod is slidably installed on the inner wall of the machine body. The first elastic telescopic rod is fixedly installed on the inner wall of the machine body. The clamping plate is fixedly installed at the movable end of the first elastic telescopic rod. The inclined plane block is fixedly installed at the front of the clamping plate. When the guard plate moves, it drives and simultaneously pushes the inclined plane rod to start moving. The movement of the inclined plane rod pushes the inclined plane block to start moving. The movement of the inclined plane block drives the clamping plate to start moving. The movement of the clamping plate clamps the welding piece on the welding table.

[0010] According to the above technical solution, the first sealing strip contacts the second sealing strip. The surfaces of the inclined plane rod and the guard plate that are close to each other are provided as inclined planes. The surfaces of the inclined plane rod and the inclined plane block that are close to each other are provided as inclined planes. A spring is provided between the guard plate and the machine body. By the contact between the first sealing strip and the second sealing strip, the sealing effect is ensured to be normal. By providing inclined planes, it is ensured that the guard plate can smoothly push the inclined plane rod when moving. By providing inclined planes, it is ensured that the inclined plane rod can smoothly push the inclined plane block when moving. By providing a spring, it is ensured that the guard plate can achieve self-resetting.

[0011] According to the above technical solution, the ventilation device includes a cross bar, a motor, a rotating shaft, a fan blade and a switch button. The cross bar is fixedly installed at the top of the ventilation opening. The motor is fixedly installed at the bottom of the cross bar. The rotating shaft is fixedly installed at the output end of the motor. The fan blade is fixedly installed on the circumferential surface of the rotating shaft. The switch button is slidably installed at the bottom of the cross bar. When the baffle moves, it pushes the sliding rod to start moving. The movement of the sliding rod pushes the switch button to start moving. The movement of the switch button turns off the motor and stops the rotation of the rotating shaft and the fan blade. Under the continuous movement of the baffle, the ventilation opening is closed.

[0012] According to the above technical solution, the ventilation device further includes a sliding rod, a second elastic telescopic rod, a baffle and an absorption plate. The sliding rod is slidably installed on the inner wall of the ventilation opening. The fixed end of the second elastic telescopic rod is fixedly installed on the inner wall of the ventilation opening. The movable end of the second elastic telescopic rod is fixedly installed on the back of the sliding rod. The baffle is fixedly installed on the right side of the clamping plate. The absorption plate is slidably installed at the top of the ventilation opening. When the fan blade rotates and blows air outwards, it drives the gas inside the machine body to pass through the ventilation opening, pass through the absorption plate and finally be discharged. The gas generated after welding contacts the activated carbon and other substances inside the absorption plate and is adsorbed, reducing the risk of their accumulation in the vacuum chamber.

[0013] According to the above technical solution, the switch button is electrically connected to the motor. The surface of the sliding rod that contacts the baffle is provided as an inclined plane. The absorption plate is filled with activated carbon and other substances. By the electrical connection, it is ensured that the switch button can control the start and stop of the motor. By providing an inclined plane, it is ensured that the baffle can smoothly push the sliding rod when moving. By filling with activated carbon and other substances, it is ensured that the absorption plate has an adsorption effect.

[0014] The present invention provides a vacuum welding device and a welding method for titanium carbide-based steel-bonded cemented carbide and high-chromium cast steel. It has the following beneficial effects: (1) In this invention, the rotation of the second conveyor belt drives the welding table to start moving. The movement of the welding table automatically feeds the workpieces to be welded into the machine body, which can greatly reduce the need for manual operation and manual handling. At the same time, it avoids the delays and errors that may occur during manual handling. Especially in mass production, it can significantly improve production efficiency. By starting the protective gas spraying device to spray protective gas into the machine body, it can help reduce the formation of pores and avoid gas inclusions in the weld, thereby improving the density and strength of the welded joint.

[0015] (2) In this invention, when the first sealing strip moves and contacts and coincides with the second sealing strip, the inside of the machine body is sealed to ensure that the required vacuum degree is reached inside the vacuum welding machine, thereby reducing vacuum leakage, improving the stability and accuracy of the welding process, preventing external pollutants or gases from entering, reducing the aging and damage of internal components, and thus extending the service life of the machine. By moving the clamping plate to clamp the workpieces on the welding table, it ensures that the workpieces maintain the correct position and docking relationship in the vacuum environment, so that the workpieces do not move or deform during the entire welding process, thereby improving the accuracy and stability of welding.

[0016] (3) In this invention, the rotation of the rotating shaft drives the fan blades to start rotating. The rotation of the fan blades blows air outward to accelerate the air circulation inside the machine body, which helps to quickly remove residual gases or volatiles, avoid these gases causing pollution or affecting the welding quality in the welding area, and at the same time reduce the temperature fluctuation inside, maintain the stability of the welding environment, and ensure the quality and performance of the workpieces. The contact and adsorption of the gases generated after welding with other substances such as activated carbon inside the absorption plate reduce the risk of their accumulation in the vacuum chamber, prevent them from depositing on the equipment surface or materials, avoid causing pollution, and further reduce the maintenance cost of the equipment and extend the equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a sectional view of the structure of the welding equipment and the welding head of the present invention; Figure 3 It is a sectional view of the structure of the conveying device of the present invention; Figure 4 It is a sectional view of the structure of the fixing plate and the second rotating column of the present invention; Figure 5 It is a sectional view of the structure of the clamping device of the present invention; Figure 6 It is a sectional view of the structure of the clamping plate and the inclined plane block of the present invention; Figure 7Schematic cross-sectional view of the ventilation device structure of the present invention; Figure 8 For the present invention Figure 7 Schematic enlarged view of the structure of part A in

[0018] In the figure: 1, body; 2, air extraction device; 3, spray protective gas device; 4, electric telescopic rod; 5, fixed rod; 6, welding equipment; 7, welding head; 8, fixing plate; 9, rotating column 1; 10, rotating column 2; 11, connecting rod; 12, transmission belt 1; 13, transmission belt 2; 14, welding table; 151, guard plate; 152, sealing strip 1; 153, push rod; 154, sealing strip 2; 155, inclined plane rod; 156, elastic telescopic rod 1; 157, clamping plate; 158, inclined plane block; 161, cross bar; 162, motor; 163, rotating shaft; 164, fan blade; 165, switch button; 166, sliding rod; 167, elastic telescopic rod 2; 168, baffle; 169, absorption plate. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-8 , an embodiment of the present invention is: a vacuum welding device for titanium carbide-based steel-bonded cemented carbide and high-chromium cast steel, including a body 1, an air extraction device 2 is arranged on the top of the body 1, a spray protective gas device 3 is arranged on the top of the body 1, an electric telescopic rod 4 is fixedly installed inside the body 1, a fixed rod 5 is fixedly installed at the output end of the electric telescopic rod 4, a welding device 6 is arranged on the top of the fixed rod 5, a welding head 7 is fixedly installed at the bottom of the welding device 6, and a conveying device is arranged inside the body 1; Among them, the conveying device includes two fixed plates 8, a first rotating column 9, two second rotating columns 10, a connecting rod 11, a first transmission belt 12, a second transmission belt 13, and a welding table 14. The fixed plates 8 are fixedly installed at the bottom of the inner wall of the machine body 1. The first rotating column 9 is rotatably installed on the inner wall of the machine body 1. The two second rotating columns 10 are rotatably installed between the two fixed plates 8. The first rotating column 9 and the second rotating columns 10 are drivingly connected by the first transmission belt 12. One end of the connecting rod 11 is fixedly installed on the right side of the first transmission belt 12, and the other end of the connecting rod 11 is fixedly installed on the left side of the fixed rod 5. The two second rotating columns 10 are drivingly connected by the second transmission belt 13. The welding table 14 is fixedly installed on the back of the second transmission belt 13. By the rotation of the second transmission belt 13, the welding table 14 starts to move. The movement of the welding table 14 automatically feeds the welding parts to be welded into the machine body 1, which can greatly reduce the need for manual operation and manual handling, and at the same time avoid the delays and errors that may occur during manual handling. Especially during mass production, the production efficiency can be significantly improved.

[0021] The connecting rod 11 contacts the first transmission belt 12 and the fixed rod 5, and the second transmission belt 13 contacts the welding table 14. A ventilation opening is provided at the top of the machine body 1. By the contact between the connecting rod 11 and the first transmission belt 12 and the fixed rod 5, it is ensured that the connecting rod 11 can drive the first transmission belt 12 to rotate when moving. By the contact between the second transmission belt 13 and the welding table 14, it is ensured that the second transmission belt 13 can drive the welding table 14 to move when rotating. By providing the ventilation opening, the normal ventilation inside the machine body 1 is ensured.

[0022] A vacuum welding device and welding method for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel. Using the above-mentioned vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel, it includes the following steps: Step 1: Place the welding parts to be welded on the welding table 14. After confirming that they are placed stably, start the electric telescopic rod 4, so that the electric telescopic rod 4 drives the fixed rod 5 to start moving. The movement of the fixed rod 5 drives the welding equipment 6 to start moving, and the movement of the welding equipment 6 drives the welding head 7 to start moving; Step 2: While the fixed rod 5 is moving, it drives the connecting rod 11 to start moving. The movement of the connecting rod 11 drives the first transmission belt 12 to start rotating. The rotation of the first transmission belt 12 drives the second rotating columns 10 to start rotating. The rotation of the second rotating columns 10 drives the second transmission belt 13 to start rotating. The rotation of the second transmission belt 13 drives the welding table 14 to start moving. The movement of the welding table 14 automatically feeds the welding parts to be welded into the machine body 1, which can greatly reduce the need for manual operation and manual handling, and at the same time avoid the delays and errors that may occur during manual handling. Especially during mass production, the production efficiency can be significantly improved; Step 3: After everything is ready, start the air extraction device 2. The air extraction device 2 evacuates the air inside the body 1, making the inside of the body 1 reach a vacuum state. Subsequently, the welding device 6 causes the welding head 7 to start welding, and at the same time, the protective gas spraying device 3 starts spraying a protective gas into the body 1, which can help reduce the formation of pores and avoid the generation of gas inclusions in the weld seam, thereby improving the density and strength of the welded joint.

[0023] During the operation of this embodiment: First, place the weldment to be welded on the welding table 14. After confirming that it is placed stably, start the electric telescopic rod 4, so that the electric telescopic rod 4 drives the fixed rod 5 to start moving. The movement of the fixed rod 5 drives the welding device 6 to start moving, and the movement of the welding device 6 drives the welding head 7 to start moving. While the fixed rod 5 is moving, it drives the connecting rod 11 to start moving. The movement of the connecting rod 11 drives the first transmission belt 12 to start rotating. The rotation of the first transmission belt 12 drives the second rotating column 10 to start rotating. The rotation of the second rotating column 10 drives the second transmission belt 13 to start rotating. The rotation of the second transmission belt 13 drives the welding table 14 to start moving. The movement of the welding table 14 automatically feeds the weldment to be welded into the body 1, which can greatly reduce the need for manual operation and manual handling, and at the same time avoid delays and errors that may occur during manual handling. Especially during mass production, it can significantly improve production efficiency. After everything is ready, start the air extraction device 2. The air extraction device 2 evacuates the air inside the body 1, making the inside of the body 1 reach a vacuum state. Subsequently, the welding device 6 causes the welding head 7 to start welding, and at the same time, the protective gas spraying device 3 starts spraying a protective gas into the body 1, which can help reduce the formation of pores and avoid the generation of gas inclusions in the weld seam, thereby improving the density and strength of the welded joint.

[0024] Please refer to Figures 1-8 , on the basis of the above embodiment, in another embodiment of the present invention, a clamping device is provided inside the body 1, and a ventilation device is provided at the top of the body 1. The clamping device includes a guard plate 151, a first sealing strip 152, a push rod 153, and a second sealing strip 154. The guard plate 151 is slidably installed on the left side of the body 1. The first sealing strip 152 is fixedly installed on the right side of the guard plate 151. The push rod 153 is fixedly installed at the front of the welding table 14. The second sealing strip 154 is fixedly installed on the left side of the body 1. By the movement of the first sealing strip 152 to contact and coincide with the second sealing strip 154, the inside of the body 1 is sealed to ensure that the required vacuum degree is reached inside the vacuum welding machine, thereby reducing vacuum leakage, improving the stability and accuracy of the welding process, preventing external pollutants or gases from entering, reducing the aging and damage of internal components, and thus extending the service life of the machine.

[0025] The clamping device further includes an inclined plane rod 155, a first elastic telescopic rod 156, a clamping plate 157 and an inclined plane block 158. The inclined plane rod 155 is slidably installed on the inner wall of the machine body 1. The first elastic telescopic rod 156 is fixedly installed on the inner wall of the machine body 1. The clamping plate 157 is fixedly installed at the movable end of the first elastic telescopic rod 156. The inclined plane block 158 is fixedly installed at the front part of the clamping plate 157. The welding parts on the welding table 14 are clamped by the movement of the clamping plate 157, ensuring that the welding parts maintain the correct position and docking relationship in the vacuum environment, so that the welding parts do not move or deform during the entire welding process, thereby improving the welding accuracy and stability.

[0026] The first sealing strip 152 contacts the second sealing strip 154. The surfaces of the inclined plane rod 155 and the guard plate 151 that are close to each other are set as inclined planes. The surfaces of the inclined plane rod 155 and the inclined plane block 158 that are close to each other are set as inclined planes. A spring is provided between the guard plate 151 and the machine body 1. The contact between the first sealing strip 152 and the second sealing strip 154 ensures normal sealing effect. The inclined plane is provided to ensure that the guard plate 151 can smoothly push the inclined plane rod 155 when moving. The inclined plane is provided to ensure that the inclined plane rod 155 can smoothly push the inclined plane block 158 when moving. The spring is provided to ensure that the guard plate 151 can achieve self-resetting.

[0027] The ventilation device includes a cross bar 161, a motor 162, a rotating shaft 163, a fan blade 164 and a switch button 165. The cross bar 161 is fixedly installed at the top of the ventilation opening. The motor 162 is fixedly installed at the bottom of the cross bar 161. The rotating shaft 163 is fixedly installed at the output end of the motor 162. The fan blade 164 is fixedly installed on the circumferential surface of the rotating shaft 163. The switch button 165 is slidably installed at the bottom of the cross bar 161. The rotation of the rotating shaft 163 drives the fan blade 164 to start rotating. The rotation of the fan blade 164 blows air to the outside to accelerate the air circulation inside the machine body 1, which helps to quickly remove the residual gas or volatile matter, avoid these gases causing pollution or affecting the welding quality in the welding area, and at the same time reduce the internal temperature fluctuation, maintain the stability of the welding environment, and ensure the quality and performance of the welding parts.

[0028] The ventilation device further includes a sliding rod 166, a second elastic telescopic rod 167, a baffle 168 and an absorption plate 169. The sliding rod 166 is slidably installed on the inner wall of the ventilation opening. The fixed end of the second elastic telescopic rod 167 is fixedly installed on the inner wall of the ventilation opening. The movable end of the second elastic telescopic rod 167 is fixedly installed on the back of the sliding rod 166. The baffle 168 is fixedly installed on the right side of the clamping plate 157. The absorption plate 169 is slidably installed at the top of the ventilation opening. The contact between the gas generated after welding and other substances such as activated carbon inside the absorption plate 169 adsorbs them, reducing the risk of their accumulation in the vacuum chamber, preventing them from depositing on the equipment surface or materials, avoiding pollution, and further reducing the equipment maintenance cost and extending the equipment life.

[0029] The switch button 165 is electrically connected to the motor 162. The surface of the sliding rod 166 in contact with the baffle 168 is set as an inclined plane. The absorption plate 169 is filled with activated carbon and other substances. The electrical connection ensures that the switch button 165 can control the start and stop of the motor 162. The inclined plane is set to ensure that the baffle 168 can smoothly push the sliding rod 166 when moving. The filling of activated carbon and other substances ensures that the absorption plate 169 has an adsorption effect.

[0030] During the operation of this embodiment: while the welding table 14 is moving, it drives the push rod 153 to start moving. When the movement of the push rod 153 stops, it no longer pushes the guard plate 151. Subsequently, the guard plate 151 starts to move and reset under the action of the spring. The movement of the guard plate 151 drives the first sealing strip 152 to start moving. The first sealing strip 152 moves and contacts and coincides with the second sealing strip 154, sealing the inside of the machine body 1 to ensure that the required vacuum degree is achieved inside the vacuum welding machine, thereby reducing vacuum leakage, improving the stability and precision of the welding process, preventing external pollutants or gases from entering, reducing the aging and damage of internal components, and thus extending the service life of the machine; while the guard plate 151 is moving, it also drives the inclined plane rod 155 to start moving. The movement of the inclined plane rod 155 drives the inclined plane block 158 to start moving. The movement of the inclined plane block 158 drives the clamping plate 157 to start moving. The clamping plate 157 moves to clamp the welding parts on the welding table 14, ensuring that the welding parts maintain the correct position and docking relationship in the vacuum environment, so that the welding parts do not move or deform during the entire welding process, thereby improving the precision and stability of the welding.

[0031] While the clamping plate 157 moves, it drives the baffle 168 to start moving. The movement of the baffle 168 pushes the slide bar 166 to start moving. The movement of the slide bar 166 pushes the switch button 165, causing the switch button 165 to turn off the motor 162 and making the rotating shaft 163 and the fan blade 164 stop rotating. Under the continuous movement of the baffle 168, the ventilation opening is closed. After the welding is completed, the clamping plate 157 moves to drive the baffle 168 to start moving. The movement of the baffle 168 stops pushing the slide bar 166 and opens the ventilation opening. After the slide bar 166 is no longer pushed, it starts to reset under the action of the second elastic telescopic rod 167. The switch button 165 also starts to reset and restarts the motor 162, causing the motor 162 to drive the rotating shaft 163 to start rotating. The rotation of the rotating shaft 163 drives the fan blade 164 to start rotating. The rotation of the fan blade 164 blows air outwards to accelerate the air circulation inside the machine body 1, which helps to quickly remove the residual gas or volatile substances, avoid these gases causing pollution or affecting the welding quality in the welding area, reduce the internal temperature fluctuation at the same time, maintain the stability of the welding environment, and ensure the quality and performance of the welded parts; When the fan blade 164 rotates and blows air outwards, it drives the gas inside the machine body 1 to pass through the ventilation opening, pass through the absorption plate 169 and finally be discharged. The gas generated after welding contacts other substances such as activated carbon inside the absorption plate 169 and is adsorbed, reducing the risk of their accumulation in the vacuum chamber, preventing them from depositing on the surface of the equipment or materials, avoiding pollution, and thus reducing the maintenance cost of the equipment and extending the service life of the equipment. When the absorption plate 169 needs to be replaced after use, it can be pulled out by pulling the handle at the front of the absorption plate 169 for replacement or cleaning.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel, comprising a body (1), characterized in that: The machine body (1) is provided with an exhaust device (2) at the top, the machine body (1) is provided with a protective gas spraying device (3), an electric telescopic rod (4) is fixedly installed inside the machine body (1), a fixed rod (5) is fixedly installed at the output end of the electric telescopic rod (4), a welding device (6) is provided at the top of the fixed rod (5), a welding head (7) is fixedly installed at the bottom of the welding device (6), a conveying device is provided inside the machine body (1), a clamping device is provided inside the machine body (1), and a ventilation device is provided at the top of the machine body (1); The conveying device comprises two fixed plates (8), a rotating column (9), two rotating columns (10), a connecting rod (11), a transmission belt (12), a transmission belt (13) and a welding table (14), wherein the fixed plate (8) is fixedly mounted on the bottom of the inner wall of the machine body (1), the rotating column (9) is rotatably mounted on the inner wall of the machine body (1), the two rotating columns (10) are rotatably mounted between the two fixed plates (8), the rotating column (9) and the rotating column (10) are connected to each other through the transmission belt (12), one end of the connecting rod (11) is fixedly mounted on the right side of the transmission belt (12), and the other end of the connecting rod (11) is fixedly mounted on the left side of the fixed rod (5), the two rotating columns (10) are connected to each other through the transmission belt (13), and the welding table (14) is fixedly mounted on the back of the transmission belt (13).

2. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel according to claim 1, characterized in that: The connecting rod (11) is in contact with the first transmission belt (12) and the fixing rod (5), the second transmission belt (13) is in contact with the welding table (14), and a ventilation hole is provided on the top of the machine body (1).

3. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high chromium cast steel according to claim 2, characterized in that: The clamping device comprises a guard plate (151), a first sealing strip (152), a push rod (153) and a second sealing strip (154); the guard plate (151) is slidably mounted on the left side of the machine body (1); the first sealing strip (152) is fixedly mounted on the right side of the guard plate (151); the push rod (153) is fixedly mounted on the front of the welding table (14); and the second sealing strip (154) is fixedly mounted on the left side of the machine body (1).

4. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel according to claim 3, characterized in that: The clamping device further comprises an inclined rod (155), an elastic telescopic rod (156), a clamping plate (157) and an inclined block (158); the inclined rod (155) is slidably mounted on the inner wall of the machine body (1); the elastic telescopic rod (156) is fixedly mounted on the inner wall of the machine body (1); the clamping plate (157) is fixedly mounted on the movable end of the elastic telescopic rod (156); and the inclined block (158) is fixedly mounted on the front of the clamping plate (157).

5. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high chromium cast steel according to claim 4, characterized in that: The sealing strip 1 (152) contacts the sealing strip 2 (154); a surface of the inclined rod (155) and the guard plate (151) close to each other is set as an inclined surface; a surface of the inclined rod (155) and the inclined block (158) close to each other is set as an inclined surface; and a spring is provided between the guard plate (151) and the machine body (1).

6. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel according to claim 5, characterized in that: The ventilation device comprises a cross bar (161), a motor (162), a rotating shaft (163), a fan blade (164) and a switch button (165); the cross bar (161) is fixedly mounted on the top of the ventilation opening; the motor (162) is fixedly mounted on the bottom of the cross bar (161); the rotating shaft (163) is fixedly mounted on the output end of the motor (162); the fan blade (164) is fixedly mounted on the circumferential surface of the rotating shaft (163); and the switch button (165) is slidably mounted on the bottom of the cross bar (161).

7. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel according to claim 6, characterized in that: The ventilation device further comprises a slide bar (166), a second elastic telescopic rod (167), a baffle (168) and an absorption plate (169), wherein the slide bar (166) is slidably mounted on the inner wall of the vent, the fixed end of the second elastic telescopic rod (167) is fixedly mounted on the inner wall of the vent, the movable end of the second elastic telescopic rod (167) is fixedly mounted on the back of the slide bar (166), the baffle (168) is fixedly mounted on the right side of the clamping plate (157), and the absorption plate (169) is slidably mounted on the top of the vent.

8. The vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel according to claim 7, characterized in that: The switch button (165) is electrically connected to the motor (162); a surface of the slide rod (166) in contact with the baffle (168) is configured as an inclined surface; and the absorption plate (169) is filled with activated carbon.

9. A vacuum welding device and welding method for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel, using the vacuum welding device for titanium carbide-based steel-bonded hard alloy and high-chromium cast steel as claimed in claim 8, characterized in that: The following steps are involved: Step 1: placing the workpiece to be welded on the welding table (14), and after confirming that the workpiece is placed stably, starting the electric telescopic rod (4), so that the electric telescopic rod (4) drives the fixed rod (5) to start moving, the fixed rod (5) moves and drives the welding device (6) to start moving, and the welding device (6) moves and drives the welding head (7) to start moving; Step 2: The fixed rod (5) moves and the connecting rod (11) starts to move. The movement of the connecting rod (11) drives the transmission belt 1 (12) to start rotating. The rotation of the transmission belt 1 (12) drives the rotating column 2 (10) to start rotating. The rotation of the rotating column 2 (10) drives the transmission belt 2 (13) to start rotating. The rotation of the transmission belt 2 (13) drives the welding table (14) to start moving. The welding table (14) moves to automatically deliver the welded parts to be welded into the body (1), which can greatly reduce the need for manual operation and manual handling, and at the same time avoid delays and errors that may occur during manual handling. Especially in mass production, it can significantly improve production efficiency; Step 3: After everything is ready, the exhaust device (2) is started to extract the air inside the machine body (1), so that the inside of the machine body (1) reaches a vacuum state. Then the welding device (6) starts welding the welding head (7), and at the same time, the protective gas spraying device (3) starts to spray protective gas into the inside of the machine body (1). This can help reduce the formation of pores and avoid the generation of gas inclusions in the weld, thereby improving the density and strength of the welded joint.

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