Machining device and machining method for internal combustion engine

Abstract

The machining device comprises a workbench, the workbench is connected with a hanging plate through a left vertical plate and a right vertical plate, a large annular gear is rotationally arranged on the left side wall of the right vertical plate, two arc-shaped clamping plates are connected to the left side of the large annular gear, a machining cutter and a circular ring are arranged above the workbench, and an air bag ring is arranged on the right side of the circular ring. The right vertical plate is connected with a stretching rod through a second up-down telescopic rod, a rotating motor and a first left-right telescopic rod, an electric soldering iron is arranged at the left end of the stretching rod, a circular shaft hole capable of being communicated with the air bag ring is formed in the stretching rod, and the left side of the circular ring is rotationally connected with a welding gun. By arranging the annular gear, the arc-shaped clamping plate, the machining cutter, the circular ring, the air bag ring, the soldering paste glue gun, the extending-in rod, the electric soldering iron and the circular shaft hole, the air inlet pipe is coated with soldering paste firstly, lubrication is facilitated, a welding face is formed between the air inlet and the interior of the air inlet pipe, the welding firmness is improved, and the problem that the air inlet pipe is bent is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of internal combustion engine welding, and in particular relates to a processing device and a processing method for an internal combustion engine. Background Art

[0002] An internal combustion engine is a heat engine that converts heat energy directly into power by burning fuel inside the machine. The main working principle of an internal combustion engine is to mix fuel and air and then burn them in the cylinder. The heat energy released generates high-temperature and high-pressure combustion gas in the cylinder. The expansion of the combustion gas pushes the piston to work, and then the mechanical work is output through the crank-connecting rod mechanism or other mechanisms to drive the driven machine to work.

[0003] When an internal combustion engine is processed and produced, it involves the need to weld the intake pipe to the intake port of the internal combustion engine cylinder block. At present, when the intake pipe of an internal combustion engine is welded, the intake pipe is generally directly pushed into the intake port of the internal combustion engine cylinder block, and the joint between the intake pipe and the internal combustion engine cylinder block is welded externally. This method of welding the intake pipe only on the outside is likely to result in insufficient welding firmness or sealing, affecting the normal welding quality or causing air leakage. Summary of the invention

[0004] In view of the shortcomings and defects in the prior art, the purpose of the present invention is to provide a processing device for an internal combustion engine, which solves the problem that the processing device for an internal combustion engine in the prior art only welds the intake pipe on the outside, resulting in insufficient welding firmness or sealing, affecting the normal welding quality or causing air leakage.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: A processing device for an internal combustion engine, including a workbench, above which there is a positioning card slot for placing the internal combustion engine. On the left side of the workbench, there is a left vertical plate, and on the right side of the workbench, there is a right vertical plate. A hanging plate is fixed between the upper parts of the left vertical plate and the right vertical plate. Below the hanging plate, there is a clamping mechanism for clamping the internal combustion engine. On the left side wall of the right vertical plate, a large annular gear is rotatably provided. On the left side of the large annular gear, two arc-shaped clamping plates are connected in a left-right telescopic and up-down telescopic manner. Above the workbench, a processing tool is connected through a first up-down telescopic rod, and the processing tool is used for cutting threads and chamfering the intake pipe. On the workbench, on the left side of the processing tool, a circular ring is connected through a support rod. On the right side of the circular ring, there is an air bag ring. Below the hanging plate, at a position corresponding to the processing tool, a solder paste gun is connected through a suspension rod. On the right vertical plate, inside the large annular gear, a rotary motor is connected through a second up-down telescopic rod. On the output shaft of the rotary motor, an insertion rod that can extend into the intake port of the internal combustion engine is connected through a first left-right telescopic rod. At the left end of the insertion rod, there is an electric iron that can contact the inner wall and the left end face of the intake pipe. Inside the insertion rod, a circular shaft hole is provided. The right end of the circular shaft hole of the insertion rod is communicated with the air bag ring through a connecting air pipe, and the left end of the circular shaft hole leads to the electric iron. In front of the electric iron, there is a heat preservation block. On the left side of the circular ring, a welding torch pointing to the edge of the intake port is rotatably connected.

[0006] As a further improvement of the present invention, the right side of the large annular gear is rotatably connected to the right vertical plate. On the right vertical plate, a large gear is also rotatably connected. The large gear is meshed with the large annular gear, and the large gear is connected to a second motor that drives it to rotate.

[0007] As a further improvement of the present invention, the cross-sectional shape of the electric iron is an inverted L shape, including a left side block and a right side block connected together. The right side block is connected to the insertion rod. The height difference between the bottom surface of the left side block and the bottom surface of the right side block is greater than the wall thickness of the intake pipe, and the height of the left side block is less than the diameter of the intake port of the internal combustion engine.

[0008] As a further improvement of the present invention, at the edge of the right end face of the right side block of the electric iron, there is an arc-shaped protrusion that can be embedded in the chamfer of the intake pipe.

[0009] As a further improvement of the present invention, two second left-right telescopic rods are provided on the large annular gear. A third up-down telescopic rod is connected to the second left-right telescopic rods, and the two arc-shaped clamping plates are respectively fixedly connected to the third up-down telescopic rods.

[0010] As a further improvement of the present invention, a small annular gear is rotatably provided on the circular ring. The welding torch is fixed on the small annular gear. The upper side of the small annular gear is meshed with a small gear. The small gear is rotatably connected to a fixing plate, and the fixing plate is fixed on the hanging plate. The small gear is connected to a third motor that drives it to rotate.

[0011] As a further improvement of the present invention, the clamping mechanism is an electric push rod, and the body of the electric push rod is fixed on the hanging plate.

[0012] A processing method using a processing device for an internal combustion engine, comprising the following steps: (1) Adjust the extending rod to the extreme position to the right, put the intake pipe over the extending rod, and adjust the arc-shaped clamping plate to clamp the intake pipe. Place the internal combustion engine in the positioning card slot and use the clamping mechanism to clamp it. Adjust the first left-right telescopic rod to extend the extending rod to the left through the intake port of the internal combustion engine into the cylinder block of the internal combustion engine. Adjust the second up-down telescopic rod downward so that the bottom of the soldering iron extends beyond the intake port. Adjust the first left-right telescopic rod to the right so that the lower end face of the right end of the soldering iron abuts against the inner wall of the cylinder block of the internal combustion engine; (2) While rotating the large ring gear and moving the arc-shaped clamping plate to the left, the intake pipe rotates and moves to the left. When the left end of the intake pipe moves above the processing knife, turn on the soldering iron, and at the same time, the processing knife extends upward and cuts the outer wall of the end of the intake pipe to form a cutting thread. At the same time, the solder paste gun applies solder paste to the cutting thread on the intake pipe. When the length of the cutting thread on the intake pipe is equal to the depth of the intake port, the processing knife retracts downward away from the wall surface of the intake pipe; (3) After turning on the soldering iron, the heat on the soldering iron is transferred to the air bag ring, making the temperature of the air bag ring rise. When the intake pipe passes through the air bag ring, the air bag ring heats the solder paste on the cutting thread to improve the fluidity of the solder paste and evenly apply the solder paste; (4) After the intake pipe passes through the air bag ring, it still rotates and moves to the left until the intake pipe is inserted into the intake port and contacts the soldering iron, and the intake pipe stops moving; (5) Turn on the welding torch and rotate the welding torch and the soldering iron. The welding torch welds the butt joint between the intake pipe and the intake port of the internal combustion engine externally, and the soldering iron heats the intake pipe internally, making the solder paste between the intake pipe and the intake port melt and stick. At the same time, the heat preservation block on the soldering iron levels the overflowing solder paste. After the welding is completed, turn off the welding torch and the soldering iron. The heat stored on the heat preservation block can keep the welded part of the intake pipe warm to a certain extent to slow down the cooling and reduce cracks.

[0013] As a further improvement of the present invention, in step (2), before the cutting thread is processed, the intake pipe is chamfered, and the projection length of the hypotenuse of the chamfer in the horizontal direction is less than half of the depth of the intake port.

[0014] Before the cutting thread is processed, the intake pipe is chamfered, which is convenient for applying solder paste inside the chamfer. During welding, a weld seam is formed inside the intake pipe to form the welding on the inner side of the intake pipe, and it is also convenient for collecting heat and transferring it between the inner walls of the intake pipe and the intake port to ensure the welding quality.

[0015] Compared with the prior art, the present invention has the following advantages: 1. By setting up the structure of an annular gear, an arc-shaped clamping plate, a processing tool, a circular ring, an airbag ring, a solder paste gun, an extending rod, an electric soldering iron, a circular shaft hole, and an air pipe, before inserting the air inlet pipe into the air inlet, rotate the air inlet pipe while moving it to the left. When loading the air inlet pipe upward to the left, chamfering and threading can be performed on the left end of the air inlet pipe first, and solder paste can be applied to the chamfer and the threaded portion. The threaded portion is provided for two main reasons. Firstly, the thread grooves of the threaded portion can accommodate more solder paste, thus forming a welding surface between the air inlet and the interior of the air inlet pipe, improving the welding firmness between the air inlet pipe and the air inlet. Secondly, the thread grooves can form multiple seals in the longitudinal direction after welding, reducing leakage. Thirdly, the cut thread grooves can reduce the contact friction between the air inlet pipe and the air inlet, facilitating the insertion of the air inlet pipe and reducing the problem of the air inlet pipe being difficult to insert. Additionally, applying solder paste to the air inlet pipe can form lubrication while forming welding points between the air inlet pipe and the air inlet, making it easier to insert the air inlet pipe into the air inlet and saving more effort.

[0016] Furthermore, due to the chamfer, not only can solder paste be applied inside the chamfer, but during welding, a weld seam can be formed inside the air inlet pipe, achieving welding on the inner side of the air inlet pipe. Also, it is convenient to collect heat and transfer it between the inner walls of the air inlet pipe and the air inlet. The extending rod and the electric soldering iron are provided such that when welding the air inlet pipe to the air inlet of the internal combustion engine, first insert the extending rod into the air inlet and attach the electric soldering iron to the inner wall of the inner shell of the internal combustion engine, so as to limit and position the air inlet pipe during subsequent insertion and complete the welding process. Additionally, the electric soldering iron can generate heat after being turned on, and the heat can be conducted from the circular shaft hole to the airbag ring. The airbag ring expands due to heat, thereby heating and softening the solder paste, increasing its fluidity and facilitating the even spreading of the solder paste. After welding is completed, the heat stored in the gas in the airbag ring and the heat on the electric soldering iron are conducted to the heat preservation block, which can keep the air inlet pipe warm and slow down the cooling rate, reducing welding cold cracks and improving welding quality. The airbag ring and the heat preservation block cooperate with each other to improve the utilization of functions.

[0017] When welding the air inlet pipe to the air inlet of the internal combustion engine, first insert the extending rod into the air inlet and attach the electric soldering iron to the inner wall of the inner shell of the internal combustion engine, so as to limit and position the air inlet pipe when it is inserted into the air inlet and complete the welding process.

[0018] In summary, during the welding of the air inlet pipe and the air inlet, the welding gun can achieve welding of the right docking seam between the air inlet pipe and the air inlet, and the electric soldering iron can achieve welding of the left docking seam between the air inlet pipe and the air inlet and welding within the contact surface between the air inlet pipe and the air inlet, improving the welding firmness and sealing performance. 2. By providing a large gear and a second motor, the second motor drives the large gear to rotate, and the rotation of the large gear drives the annular gear to rotate.

[0019] 3. By setting the soldering iron in an inverted L shape, thus, the inner side and the left end side of the intake pipe can be heated and welded.

[0020] 5. By providing an arc-shaped protrusion that can be embedded in the chamfer of the intake pipe at the edge of the right end face of the right side block of the soldering iron, the solder paste at the chamfer can be compacted, thereby improving the welding firmness.

[0021] By providing a second left-right telescopic rod and a third up-down telescopic rod on the annular gear, the left-right movement and up-down telescopic movement of the arc-shaped clamping block can be adjusted. By providing a small annular gear, a small gear, and connecting the third motor to the fixed plate, the third motor drives the small gear to rotate. After the small gear rotates, it drives the small annular gear to rotate, and the rotation of the small annular gear drives the welding torch to rotate. 8. By using a processing method for a processing device for an internal combustion engine, first, the intake pipe is cut and chamfered and threaded, and solder paste is applied at the chamfer and the threaded cut. After applying the solder paste, the solder paste is heated and applied. Then, the welding torch is used to weld the intake pipe and the right-side butting interface of the air inlet, and at the same time, the soldering iron is used to weld the intake pipe and the left-end butting interface of the air inlet, as well as to heat-weld the contact surface between the intake pipe and the air inlet, synchronously achieving the full welding of the intake pipe, improving the welding firmness while improving the welding tightness of the intake pipe and reducing the operation steps.

[0022] In addition, when the soldering iron is welding, the heat generated by the soldering iron can be reasonably utilized to provide heat to the airbag ring. The airbag ring heats the solder paste, facilitating the softening of the solder paste and improving its fluidity. In addition, the airbag ring preheats the welding part of the intake pipe, improving the subsequent welding quality. After welding, the heat stored in the airbag ring is also transferred to the soldering iron and the heat preservation block, thereby slow-cooling the welding part and improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic sectional structure diagram of the present invention; Figure 3 is Figure 1 an enlarged view at A; Figure 4 is Figure 2 an enlarged view at B; Figure 5 is Figure 2 an enlarged view at C; Figure 6Schematic diagram of the structure at the soldering iron Figure 7 Schematic diagram of the structure at the large ring gear In the figure: 1, workbench; 2, positioning card slot; 3, left vertical plate; 4, right vertical plate; 5, suspension plate; 6, clamping mechanism; 7, large ring gear; 8, arc-shaped clamping plate; 9, first upper and lower telescopic rod; 10, processing tool; 11, support rod; 12, circular ring; 13, air bag ring; 14, suspension rod; 15, solder paste gun; 16, second upper and lower telescopic rod; 17, rotating motor; 18, first left and right telescopic rod; 19, extending rod; 20, soldering iron; 201, left side block; 202, right side block; 22, heat preservation block; 23, welding torch; 24, large gear; 25, arc-shaped protrusion; 26, second left and right telescopic rod; 27, third upper and lower telescopic rod; 28, small ring gear; 29, small gear; 30, fixing plate; 31, internal combustion engine; 32, intake pipe; 33, third motor; 34, connecting air pipe. Specific embodiments

[0024] The following further elaborates on the present invention in conjunction with the attached Figure 1-7 For a clearer illustration, only the structures related to the inventive points of the present invention are shown in the figure.

[0025] For the convenience of description, a coordinate system is now defined as Figure 1 shown, with the left-right direction as the horizontal, the front-back direction as the longitudinal, and the up-down direction as the vertical.

[0026] An embodiment of the present invention discloses a processing device for an internal combustion engine. Referring to Figure 1 , Figure 2 and Figure 7 , a processing device for an internal combustion engine includes a workbench 1, above which there is a positioning card slot 2 for placing the internal combustion engine 31. A left vertical plate 3 is fixed on the left side of the workbench 1, and a right vertical plate 4 is fixed on the right side of the workbench 1. Between the upper parts of the left vertical plate 3 and the right vertical plate 4, a suspension plate 5 is fixed. Below the suspension plate 5, there is a clamping mechanism 6 for clamping the internal combustion engine 31. The clamping mechanism 6 is an electric push rod, and the body of the electric push rod is fixed on the suspension plate 5. As Figure 2 and Figure 5 shown, on the left side wall of the right vertical plate 4, a large ring gear 7 is rotatably provided. The right side of the large ring gear 7 is rotatably connected to the right vertical plate 4. On the right vertical plate 4, a large gear 24 is also rotatably connected. The large gear 24 is meshed with the large ring gear 7, and the large gear 24 is connected to a second motor that drives it to rotate; the second motor drives the large gear 24 to rotate, and the rotation of the large gear 24 drives the ring gear to rotate.

[0027] As Figure 2As shown in the figure, on the upper and lower sides on the left side of the large ring gear 7, there is a curved clamping plate 8 that can be telescopically moved left and right and up and down. Specifically, two second left and right telescopic rods 26 are fixedly arranged on the large ring gear 7, one above the other. Each second left and right telescopic rod 26 is connected with a third up and down telescopic rod 27, and the two curved clamping plates 8 are respectively fixedly connected to the bottom of the third up and down telescopic rod 27. By arranging the second left and right telescopic rods 26 and the third up and down telescopic rods 27 on the ring gear, the left and right movement and up and down telescopic movement of the curved clamping block can be adjusted.

[0028] As Figure 4 shown in the figure, above the workbench 1, a processing tool 10 is connected through a first up and down telescopic rod 9. The processing tool 10 is used for cutting threads and chamfering the intake pipe 32. The cross-sectional shape of the processing tool 10 is a sharp angle with an inclined surface, and the slope of the inclined surface of the processing tool 10 matches the slope of the chamfering inclined surface. By adjusting the height of the processing tool 10 and rotating the intake pipe 32, the chamfer can be processed.

[0029] As Figure 1 、 Figure 3 and Figure 4 shown in the figure, on the workbench 1, on the left side of the processing tool 10, a circular ring 12 is fixedly connected through a support rod 11. On the right side of the circular ring 12, an air bag ring 13 is fixedly connected. The air bag ring 13 is annular and filled with gas. Below the hanging plate 5, at a position corresponding to the processing tool 10, a solder paste gun 15 is connected through a hanging rod 14. The solder paste gun 15 can eject solder paste, and flux and binder can be mixed in the solder paste. On the right vertical plate 4, inside the large ring gear 7, a rotary motor 17 is connected through a second up and down telescopic rod 16. The rotary motor 17 is fixed on the right vertical plate 4.

[0030] As Figure 4 shown in the figure, on the output shaft of the rotary motor 17, an insertion rod 19 that can extend into the intake port of the internal combustion engine 31 is connected through a first left and right telescopic rod 18. At the left end of the insertion rod 19, an electric soldering iron 20 that can contact the inner wall and the left end face of the intake pipe 32 is fixed. The electric soldering iron 20 can be a commonly used electric soldering iron in the prior art, which can be heated when powered on. The power-on structure and principle of the electric soldering iron are the same as those in the prior art. Specifically, when manufacturing, the head end shape of the electric soldering iron 20 can be customized. The cross-sectional shape is an inverted L shape, including a left side block 201 and a right side block 202 connected together. The right side block 202 is connected to the insertion rod 19. The height difference between the bottom surface of the left side block 201 and the bottom surface of the right side block 202 is greater than the wall thickness of the intake pipe 32, and the height of the left side block 201 is less than the diameter of the intake port of the internal combustion engine 31. Therefore, the inner side and the left end side of the intake pipe 32 can be heated and welded.

[0031] A circular shaft hole (not shown in the attached drawing) is provided inside the extending rod 19. The right end of the circular shaft hole of the extending rod 19 communicates with the air bag ring 13 through the connecting air pipe 34, and the left end of the circular shaft hole leads to the electric soldering iron 20. As Figure 4 shown, a heat preservation block 22 is provided on the front side of the electric soldering iron 20. The heat preservation block 22 is made of a heat preservation material with slow heat dissipation, such as aluminum alloy. As Figure 1 and Figure 3 shown, a welding torch 23 pointing to the edge of the air inlet is rotatably connected to the left side of the circular ring 12.

[0032] In addition, as Figure 6 shown, an arc-shaped protrusion 25 that can be embedded in the chamfer of the air inlet pipe 32 is provided at the edge of the right end face of the right side block 202 of the electric soldering iron 20; thus, the solder paste at the chamfer can be compacted, improving the welding firmness.

[0033] In addition, as Figure 4 shown, a small ring gear 28 is rotatably provided on the circular ring 12. The welding torch 23 is fixed on the small ring gear 28. The upper side of the small ring gear 28 is meshed and connected with a small gear 29. The small gear 29 is rotatably connected to the fixing plate 30. The fixing plate 30 is fixed on the hanging plate 5. The small gear 29 is connected to a third motor 33 that drives it to rotate; then the third motor 33 drives the small gear 29 to rotate. After the small gear 29 rotates, it drives the small ring gear 28 to rotate, and the rotation of the small ring gear 28 drives the welding torch 23 to rotate. The above-mentioned first up and down telescopic rod 9, second up and down telescopic rod 16, third up and down telescopic rod 27, first left and right telescopic rod 18, and second left and right telescopic rod 26 can adopt the structure of an electric push rod, a hydraulic push rod or a pneumatic push rod.

[0034] By setting the structure of the ring gear, arc-shaped clamping plate 8, processing tool 10, circular ring 12, air bag ring 13, solder paste gun 15, extending rod 19, electric soldering iron 20, circular shaft hole, and air pipe, before inserting the air inlet pipe 32 into the air inlet, the air inlet pipe 32 is rotated and moved to the left at the same time. When loading the air inlet pipe 32 to the upper left, the left end of the air inlet pipe 32 can be processed with a chamfer and cut threads, and solder paste is applied to the chamfer and the cut threads. The setting of the cut threads, firstly, the thread grooves of the cut threads can accommodate more solder paste, so that a welding surface can be formed between the air inlet and the inside of the air inlet pipe 32, improving the welding firmness between the air inlet pipe 32 and the air inlet. Secondly, the setting of the thread grooves can form multiple seals in the longitudinal direction after welding, reducing leakage. Thirdly, the cut thread grooves can reduce the contact friction force between the air inlet pipe 32 and the air inlet, facilitating the insertion of the air inlet pipe 32 and reducing the problem of being more laborious when the air inlet pipe 32 is inserted into the air inlet. In addition, adding solder paste to the air inlet pipe 32 can form a lubrication while forming a welding point between the air inlet pipe 32 and the air inlet, facilitating the insertion of the air inlet pipe 32 and being more labor-saving.

[0035] In addition, with the chamfer provided, not only can the inside of the chamfer be coated with solder paste. During welding, a weld seam is formed inside the intake pipe 32, enabling welding on the inner side of the intake pipe 32. Moreover, it is convenient to gather the heat of the soldering iron and transfer it between the intake pipe 32 and the inner wall of the air inlet, causing the solder paste between the intake pipe 32 and the inner wall of the air inlet to melt and adhere. The arrangement of the insertion rod 19 and the soldering iron 20 is such that when the intake pipe 32 is processed and welded into the air inlet of the internal combustion engine 31, first insert the insertion rod 19 into the air inlet and press the soldering iron 20 against the inner wall of the inner shell of the internal combustion engine 31, so as to limit and position the intake pipe 32 subsequently and complete the welding process. In addition, with the soldering iron 20 provided, heat can be generated after it is turned on, and thus the heat can be conducted from the circular shaft hole to the airbag ring 13. The airbag ring 13 expands when heated, thereby heating and softening the solder paste, increasing its fluidity and facilitating even spreading of the solder paste. After welding is completed, the heat stored in the gas in the airbag ring 13 and the heat on the soldering iron 20 are conducted to the heat preservation block 22. The heat preservation block 22 can keep the intake pipe 32 warm and slow down cooling, reduce welding cold cracks, and improve welding quality. The airbag ring 13 and the electric heating block make use of each other, improving the utilization of functions.

[0036] When the intake pipe 32 is processed and welded into the air inlet of the internal combustion engine 31, first insert the insertion rod 19 into the air inlet and press the soldering iron 20 against the inner wall of the inner shell of the internal combustion engine 31, so as to limit and position the intake pipe 32 when it extends into the air inlet and complete the welding process.

[0037] In short, when welding the intake pipe 32 and the air inlet, the welding torch 23 can achieve welding of the right butt joint seam between the intake pipe 32 and the air inlet, and the soldering iron 20 can achieve welding of the left butt joint seam between the intake pipe 32 and the air inlet and welding within the contact surface between the intake pipe 32 and the air inlet, improving the welding firmness and tightness. A processing method using a processing device for an internal combustion engine for processing includes the following steps: (1) Adjust the insertion rod 19 to the extreme right position, slip the intake pipe 32 over the insertion rod 19, and adjust the arc-shaped clamping plate 8 to clamp the intake pipe 32. Place the internal combustion engine 31 in the positioning card slot 2 and clamp it using the clamping mechanism 6. Adjust the first left-right telescopic rod 18 to insert the insertion rod 19 leftward through the air inlet of the internal combustion engine 31 into the shell of the internal combustion engine 31. Adjust the second up-down telescopic rod 16 downward so that the bottom of the soldering iron 20 extends beyond the air inlet. Adjust the first left-right telescopic rod 18 rightward so that the lower end face of the right end of the soldering iron 20 abuts against the inner wall of the shell of the internal combustion engine 31. (2) Rotate the large annular gear 7 while moving the arc-shaped splint 8 to the left, so that the intake pipe 32 rotates and moves to the left. When the left end of the intake pipe 32 moves to the upper part of the processing tool 10, turn on the soldering iron 20. At the same time, the processing tool 10 extends upward and cuts the outer wall of the end of the intake pipe 32 to form a cutting thread. At the same time, the solder paste gun 15 applies solder paste to the cutting thread on the intake pipe 32. When the length of the cutting thread on the intake pipe 32 is equal to the depth of the air inlet, the processing tool 10 retracts downward and leaves the wall surface of the intake pipe 32; (3) After turning on the soldering iron 20, the heat on the soldering iron 20 is transferred to the air bag ring 13, making the temperature of the air bag ring 13 rise. When the intake pipe 32 passes through the air bag ring 13, the air bag ring 13 heats the solder paste on the cutting thread to improve the fluidity of the solder paste and evenly apply the solder paste; (4) After the intake pipe 32 passes through the air bag ring 13, it still rotates and moves to the left until the intake pipe 32 is inserted into the air inlet and contacts the soldering iron 20, and the intake pipe 32 stops moving; (5) Turn on the welding torch 23 and rotate the welding torch 23 and the soldering iron 20. The welding torch 23 welds the docking seam between the intake pipe 32 and the air inlet of the internal combustion engine 31 externally, and the soldering iron 20 heats the intake pipe 32 internally, making the solder paste between the intake pipe 32 and the air inlet melt and stick weld. At the same time, the heat preservation block 22 on the soldering iron 20 levels the overflowing solder paste. After the welding is completed, turn off the welding torch 23 and the soldering iron 20. The heat stored on the heat preservation block 22 can keep the welded part of the intake pipe 32 warm to a certain extent, so as to slow down the cooling and reduce cracks.

[0038] By using a processing method of a processing device for the internal combustion engine 31, first process and cut the thread of the intake pipe 32, apply solder paste at the cutting thread, heat and apply the solder paste after applying the solder paste. Then, use the welding torch 23 to weld the docking seam on the right side of the intake pipe 32 and the air inlet, and at the same time use the soldering iron 20 to weld the docking seam on the left end of the intake pipe 32 and the air inlet, and heat and weld the contact surface between the intake pipe 32 and the air inlet, synchronously realizing the full welding of the intake pipe 32, improving the welding firmness and the welding sealing performance of the intake pipe 32, and reducing the operation steps.

[0039] In addition, when the soldering iron 20 is in use for soldering, the heat generated by the soldering iron 20 can be reasonably utilized to provide heat to the airbag ring 13. The airbag ring 13 heats the solder paste, facilitating the softening of the solder paste and improving its fluidity. Additionally, the airbag ring 13 preheats the welding area of the intake pipe 32, enhancing the subsequent welding quality. After welding, the heat stored in the airbag ring 13 is also transferred to the soldering iron 20 and the heat preservation block 22, thereby slowly cooling the welding area and improving the welding quality. Furthermore, before the thread cutting process, a chamfer is cut on the intake pipe 32 to facilitate the application of solder paste inside the chamfer. During soldering, a weld seam is formed inside the intake pipe 32 to achieve the soldering on the inner side of the intake pipe 32. Moreover, it is convenient to collect heat and transfer it between the intake pipe 32 and the inner wall of the air inlet, ensuring the welding quality.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. It should be understood that the specific embodiments described herein are only for understanding the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Claims

1. A processing device for an internal combustion engine, comprising a workbench, characterized in that: Above the workbench, there is a positioning slot for placing an internal combustion engine. On the left side of the workbench, there is a left vertical plate, and on the right side of the workbench, there is a right vertical plate. A hanging plate is fixed between the upper parts of the left vertical plate and the right vertical plate. Below the hanging plate, there is a clamping mechanism for clamping the internal combustion engine. On the left side wall of the right vertical plate, a large ring gear is rotatably provided. On the left side of the large ring gear, two arc-shaped clamping plates are connected in a left-right telescopic and up-down telescopic manner. Above the workbench, a processing tool is connected through a first up-down telescopic rod. The processing tool is used for cutting threads and chamfering the intake pipe. On the workbench, on the left side of the processing tool, a circular ring is connected through a support rod. On the right side of the circular ring, there is an air bag ring. Below the hanging plate, at a position corresponding to the processing tool, a solder paste gun is connected through a hanging rod. On the right vertical plate, inside the large ring gear, a rotating motor is connected through a second up-down telescopic rod. On the output shaft of the rotating motor, an extending rod that can extend into the intake port of the internal combustion engine is connected through a first left-right telescopic rod. At the left end of the extending rod, there is an electric soldering iron that can contact the inner wall and the left end face of the intake pipe. Inside the extending rod, a circular shaft hole is provided. The right end of the circular shaft hole of the extending rod is communicated with the air bag ring through a connecting air pipe, and the left end of the circular shaft hole leads to the electric soldering iron. In front of the electric soldering iron, there is a heat preservation block. On the left side of the circular ring, a welding torch pointing to the edge of the intake port is rotatably connected.

2. The processing device for an internal combustion engine according to claim 1, characterized in that: The right side of the large ring gear is rotatably connected to the right vertical plate. On the right vertical plate, a large gear is also rotatably connected. The large gear is meshed and connected with the large ring gear. The large gear is connected to a second motor that drives its rotation.

3. The processing device for an internal combustion engine according to claim 1, characterized in that: The cross-sectional shape of the electric soldering iron is an inverted L shape, including a left side block and a right side block connected together. The right side block is connected to the extending rod. The height difference between the bottom surface of the left side block and the bottom surface of the right side block is greater than the wall thickness of the intake pipe, and the height of the left side block is less than the diameter of the intake port of the internal combustion engine.

4. A processing device for an internal combustion engine according to claim 1, characterized in that: At the edge of the right end face of the right side block of the electric soldering iron, there is an arc-shaped protrusion that can be embedded in the chamfer of the intake pipe.

5. A processing device for an internal combustion engine according to claim 1, characterized in that: On the large ring gear, there are two second left-right telescopic rods. On the second left-right telescopic rods, third up-down telescopic rods are connected. The two arc-shaped clamping plates are respectively fixedly connected to the third up-down telescopic rods.

6. The processing device for an internal combustion engine according to claim 1, characterized in that: On the circular ring, a small ring gear is rotatably provided. The welding torch is fixed on the small ring gear. The upper side of the small ring gear is meshed and connected with a small gear. The small gear is rotatably connected to a fixing plate. The fixing plate is fixed on the hanging plate. The small gear is connected to a third motor that drives its rotation.

7. A processing device for an internal combustion engine according to claim 1, characterized in that: The clamping mechanism is an electric push rod, and the body of the electric push rod is fixed on the hanging plate.

8. A processing method for processing using a processing device for an internal combustion engine as described in claim 1, characterized in that: It includes the following steps: (1) Adjust the extending rod to the extreme right position, put the intake pipe over the extending rod, adjust the arc-shaped clamping plates to clamp the intake pipe, place the internal combustion engine in the positioning slot, and use the clamping mechanism to clamp it; adjust the first left-right telescopic rod to extend the extending rod leftward through the intake port of the internal combustion engine into the cylinder block of the internal combustion engine, adjust the second up-down telescopic rod downward so that the bottom of the electric soldering iron extends beyond the intake port, and adjust the first left-right telescopic rod rightward so that the lower end face of the right end of the electric soldering iron abuts against the inner wall of the cylinder block of the internal combustion engine; (2) Rotate the large ring gear while moving the arc-shaped clamping plate to the left, so that the intake pipe rotates and moves to the left. When the left end of the intake pipe moves to the upper part of the processing tool, turn on the soldering iron. At the same time, the processing tool extends upward and cuts the outer wall of the end of the intake pipe to form cutting threads. At the same time, the solder paste gun applies solder paste to the cutting threads on the intake pipe. When the length of the cutting threads on the intake pipe is equal to the depth of the air inlet, the processing tool retracts downward and leaves the wall surface of the intake pipe; (3) After turning on the soldering iron, the heat on the soldering iron is transferred to the air bag ring, making the temperature of the air bag ring rise. When the intake pipe passes through the air bag ring, the air bag ring heats the solder paste on the cutting threads to improve the fluidity of the solder paste and evenly apply the solder paste; (4) After the intake pipe passes through the air bag ring, it still rotates and moves to the left until the intake pipe is inserted into the air inlet and contacts the soldering iron, and the intake pipe stops moving; (5) Turn on the welding torch and rotate the welding torch and the soldering iron. The welding torch welds the butt joint between the intake pipe and the air inlet of the internal combustion engine from the outside, and the soldering iron heats the intake pipe from the inside, making the solder paste between the intake pipe and the air inlet melt and stick. At the same time, the heat preservation block on the soldering iron levels the overflowing solder paste. After the welding is completed, turn off the welding torch and the soldering iron. The heat stored in the heat preservation block can keep the welded part of the intake pipe warm to a certain extent, so as to slow down the cooling and reduce cracks.

9. The processing method using a processing device for an internal combustion engine according to claim 8, characterized in that: In step (2), before processing the cutting threads, chamfer the intake pipe. The projection length of the hypotenuse of the chamfer in the horizontal direction is less than half of the depth of the air inlet.

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