Welding device for cylinder cover machining

Abstract

The invention relates to the technical field of welding equipment, in particular to a welding device for cylinder cover machining, which comprises a laser welding head, a moving frame is mounted on the outer side of the laser welding head, and a cooling assembly is fixedly connected to the bottom of the moving frame; the cooling assembly comprises cylinders, swing plates, heat conduction assemblies and a circulating water pipe, the two cylinders are fixedly connected with the movable frame, the two heat conduction assemblies are arranged on the two sides of the cylinders correspondingly, the two ends of the heat conduction assemblies are rotationally connected with the cylinders through the swing plates, the circulating water pipe penetrates through the two cylinders, and arc-shaped grooves are formed in the tops of the cylinders; one end of each swing plate extends into the arc-shaped groove, a first spring is arranged in the arc-shaped groove, the two ends of the first spring are fixed to the two swing plates respectively, and the heat conduction assembly comprises a long rod, a sleeve, a heat conduction plate and a rubber film. The technical problems that when an existing welding device cools the periphery of a welding seam, the temperature of the welding seam is prone to being reduced, the welding seam forming speed is affected, and the cooling effect on a heated area in a workpiece is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, in particular to a welding device for machining a cylinder head. Background Art

[0002] Compressor cylinder head welding equipment is a challenging yet crucial field. Laser welding plays an important role in cylinder head welding due to its advanced technology, simple welding process and good welding effect. During welding, heat will be transferred along the workpiece, causing the heat-affected zone to expand, which can easily lead to large-scale thermal deformation of the workpiece. Therefore, it is necessary to consider cooling the workpiece during welding.

[0003] After searching, the Chinese invention patent with application number CN202310145096.X discloses a heterogeneous metal laser welding device and laser welding method. Through the cooling equipment, the welding point can be accurately aligned and physically cooled immediately after the heterogeneous metal welding, thereby controlling and shortening the residence time of the metal in liquid or high-temperature solid state, avoiding weld dilution, and improving welding quality.

[0004] The above-mentioned device uses a motor to drive the fan blades toward the weld to cool the weld with air, which has a better heat dissipation effect on the weld surface of the workpiece. Laser welding uses laser radiation heating, and the surface heat diffuses to the inside through heat conduction, melting the workpiece to form a specific molten pool. After the molten pool cools, a weld is formed. Therefore, general air cooling to cool the weld surface will affect the processing speed of laser welding on the workpiece, and it is also difficult to cool the heated area inside the workpiece, which is difficult to meet the cooling requirements of laser welding. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a welding device for cylinder head processing, which solves the technical problems that the existing welding equipment easily reduces the weld temperature when cooling the area around the weld, affects the speed of weld formation, and has a poor cooling effect on the heated area inside the workpiece.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: The welding device for processing the cylinder head includes a laser welding head, a movable frame is installed on the outside of the laser welding head, and a cooling component is fixedly connected to the bottom of the movable frame; The cooling component includes a cylinder, a swing plate, a heat-conducting component and a circulating water pipe. The two cylinders are fixedly connected to the movable frame. The two heat-conducting components are respectively arranged on both sides of the cylinder. Both ends of the heat-conducting component are rotatably connected to the cylinder through the swing plate. The circulating water pipe runs through the two cylinders.

[0007] Furthermore, an arc-shaped groove is opened at the top of the cylinder, one end of the swing plate extends into the arc-shaped groove, a spring is arranged in the arc-shaped groove, and both ends of the spring are respectively fixed to the two swing plates.

[0008] Furthermore, the heat conduction component includes a long rod, a sleeve, a heat conduction plate and a rubber membrane. The long rod is fixedly connected to the swing plate. The long rod includes a thin rod area in the middle and thick rod areas at both ends. The sleeve is sleeved outside the thin rod area. The two heat conduction plates are rotatably connected to the sleeve. A cavity is opened inside the sleeve. The circulating water pipe is connected to the cavity. Two rubber membranes are arranged outside the sleeve. The sleeve has a notch facing the heat conduction plate, and the rubber membrane covers the notch.

[0009] Furthermore, a water storage tank is provided at one end of the heat conducting plate away from the sleeve, and a flexible pipe is connected between the water storage tank and the inner cavity of the sleeve.

[0010] Furthermore, when the heat conducting plate is tangent to the sleeve, one end of the heat conducting plate extends to the outside of the long rod; when the heat conducting plate squeezes the rubber film to the maximum extent, both ends of the heat conducting plate are inside the long rod.

[0011] Furthermore, the movable frame includes a collar, an external expansion plate and a telescopic assembly. The collar is sleeved on the outside of the laser welding head. The cylinder is fixed to the collar through the external expansion plate. The telescopic assembly is arranged on the outside of the laser welding head. The movable end of the telescopic assembly is fixed to the collar.

[0012] Furthermore, the telescopic assembly includes an outer tube, an inner rod and a second spring. The outer tube is connected to a laser welding head. One end of the inner rod extends into the interior of the outer tube. The inner rod and the outer tube are fixed by the second spring. The bottom of the inner rod is fixed to the ring.

[0013] Furthermore, a block is fixedly connected to the inner wall of the outer tube, a magnet block is fixedly connected to the bottom of the block, a metal block is fixedly connected to the top of the inner rod, and one end of the second spring is fixed on the metal block.

[0014] Furthermore, a slide groove adapted to the outer tube is opened on one side of the laser welding head, the outer tube extends into the slide groove, a bolt is provided on the top of the outer tube, and the bolt passes through the outer tube.

[0015] By means of the above technical solution, the present invention provides a welding device for cylinder head processing, which has at least the following beneficial effects: 1. The present invention provides a cooling component that can utilize heat conduction to absorb the heat diffused along the inside of the workpiece when the workpiece is welded, thereby improving the cooling effect of the heated area inside the workpiece. The shape of the heat-conducting structure can be adjusted as needed to fit the different shapes of the welding position for heat absorption and cooling. At the same time, since the heat absorption position is at a distance from the weld, the impact on the temperature at the weld is small, and the speed of heating and welding the workpiece will not be slowed down.

[0016] 2. The present invention provides an arc groove and a spring, which can transfer part of the weight of the cooling component to the workpiece, reducing the weight that needs to be overcome when moving the laser welding head and the cooling component, thereby reducing the influence of the weight of the cooling component on the control flexibility of the laser welding head. At the same time, the cooling component expands the area supported by the workpiece, thereby improving the stability of the laser welding head and the cooling component during operation.

[0017] 3. The present invention provides a cooling assembly so that both heat conducting plates are attached to the surface of the workpiece, which can expand the contact area with the workpiece and adapt to contact with workpieces at different angles, thereby enhancing the cooling effect around the welding position of the workpiece.

[0018] 4. The present invention provides a telescopic component, which facilitates adjustment of the force of the cooling component on the workpiece as needed, ensuring that the cooling component cools the workpiece after contact with the workpiece while preventing the cooling component from squeezing and damaging the workpiece.

[0019] 5. The present invention provides a magnet block and a metal block, so that when the workpiece does not need to be cooled, the cooling component can be folded away from the workpiece, thereby reducing the influence of the cooling component on the movement of the laser welding head on the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a structural schematic diagram of the mobile rack and the cooling assembly of the present invention; Figure 3 This is a schematic structural diagram of the cooling component of the present invention; Figure 4 A partial cross-sectional view of the heat conducting component of the present invention; Figure 5 is a cross-sectional view of the heat conducting component of the present invention; Figure 6 It is a cross-sectional view of the telescopic assembly of the present invention.

[0021] In the figure: 1. Laser welding head; 2. Moving frame; 21. Ring; 22. Outer expansion plate; 23. Telescopic assembly; 231. Outer tube; 232. Inner rod; 233. Spring 2; 3. Cooling assembly; 31. Cylinder; 32. Swing plate; 33. Heat conduction assembly; 331. Long rod; 332. Sleeve; 333. Heat conduction plate; 334. Rubber membrane; 34. Circulating water pipe; 4. Arc groove; 5. Spring 1; 6. Water storage tank; 7. Flexible pipe; 8. Stop block; 9. Magnet block; 10. Metal block; 11. Bolt. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1 In order to improve the cooling effect on the inside of the workpiece during laser welding, prevent the heat from being transferred to a wider range inside the workpiece, and reduce the impact on the weld, please refer to Figure 1-Figure 3 This embodiment proposes a welding device for cylinder head processing, including a laser welding head 1, a mobile frame 2 is installed on the outside of the laser welding head 1, and a cooling component 3 is fixedly connected to the bottom of the mobile frame 2. The cooling component 3 includes a cylinder 31, a swing plate 32, a heat conduction component 33 and a circulating water pipe 34. The two cylinders 31 are fixedly connected to the mobile frame 2, and the two heat conduction components 33 are respectively arranged on both sides of the cylinder 31. Both ends of the heat conduction component 33 are rotatably connected to the cylinder 31 through the swing plate 32, and the circulating water pipe 34 runs through the two cylinders 31.

[0024] When in use, the worker holds the laser welding head 1 to weld the workpiece. Taking welding two vertical metal plates as an example, the end of the laser welding head 1 contacts the position to be welded. Figure 3 The two cylinders 31 are respectively located in front and behind the laser welding head 1, and the two heat-conducting components 33 are respectively located on the left and right of the laser welding head 1. The cylinder 31 is at the connection of the two vertical workpieces, and the side surfaces of the cylinder 31 are respectively pressed against the two workpieces. When the heat of the welded workpiece is transferred forward and backward along the inside of the workpiece, part of the heat is absorbed by the cylinder 31, and the heat on the cylinder 31 dissipates from its surface to the surrounding air, preventing the heat inside the workpiece from dissipating to the front and rear sides.

[0025] Adjust the angle of the heat-conducting components 33 so that one heat-conducting component 33 is pressed against the workpiece in the horizontal direction and the other heat-conducting component 33 is pressed against the workpiece in the vertical direction. When the heat from the welded part of the workpiece is transferred to the left and right along the inside of the workpiece, part of the heat is absorbed by the heat-conducting component 33, and the heat on the heat-conducting component 33 is dissipated from its surface to the surrounding air, thereby preventing the heat inside the workpiece from dissipating to the left and right sides.

[0026] Combining the above two situations, heat conduction can be used to absorb the heat diffused along the inside of the workpiece when the workpiece is welded, thereby improving the cooling effect of the heated area inside the workpiece. The shape of the heat-conducting structure can be adjusted as needed to fit the different shapes of the welding position for heat absorption and cooling. At the same time, since the heat absorption position is some distance away from the weld, the impact on the temperature at the weld is small, and the speed of heating and welding the workpiece will not slow down.

[0027] In order to reduce the influence of the weight of the cooling component 3 on the flexibility of the laser welding head 1, refer to Figure 3 An arc-shaped groove 4 is provided on the top of the cylinder 31, one end of the swing plate 32 extends into the interior of the arc-shaped groove 4, a spring 5 is provided in the arc-shaped groove 4, and both ends of the spring 5 are fixed to the two swing plates 32 respectively.

[0028] During use, the bottom of the cylinder 31 is supported by the workpiece. When the laser welding head 1 is moved, the cylinder 31 is driven to slide along the workpiece without overcoming the weight of the cylinder 31. The heat-conducting component 33 whose bottom is pressed against the workpiece is supported by the workpiece. When the laser welding head 1 is moved, the heat-conducting component 33 is driven to slide along the workpiece without overcoming the weight of the heat-conducting component 33.

[0029] The heat-conducting component 33 that presses against the workpieces on the side is analyzed in two cases: the two workpieces are perpendicular and the two workpieces are not perpendicular. When the two workpieces are perpendicular, the bottom of the heat-conducting component 33 is supported by the swing plate 32. When the laser welding head 1 is moved, the heat-conducting component 33 is driven to slide along the workpieces without overcoming the weight of the heat-conducting component 33. When the two workpieces are not perpendicular, part of the weight of the heat-conducting component 33 that presses against the workpieces on the side is supported by the swing plate 32 at the bottom, and the remaining weight acts on the swing plate 32 and the heat-conducting component 33 on the other side through the spring 5. The heat-conducting component 33 that presses against the workpieces on the bottom is supported by the workpieces. When the laser welding head 1 is moved, the heat-conducting component 33 is driven to slide along the workpieces. When the welding head 1 needs to be lifted and moved to another position, the lower heat-conducting component 33 is still supported by the workpiece after hanging down, and part of the weight of the higher heat-conducting component 33 is also transferred to the lower heat-conducting component 33 through spring 1 5, and finally acts on the workpiece, which can act on the workpiece with part of the weight of the cooling component 3, reducing the weight that needs to be overcome when moving the laser welding head 1 and the cooling component 3, thereby reducing the influence of the weight of the cooling component 3 on the control flexibility of the laser welding head 1. At the same time, the cooling component 3 expands the area supported by the workpiece, thereby improving the stability of the laser welding head 1 and the cooling component 3 during operation.

[0030] Example 2 In order to improve the cooling capacity around the welding position of the workpiece, refer to Figure 1-Figure 5On the basis of the first embodiment, the heat conducting assembly 33 includes a long rod 331, a sleeve 332, a heat conducting plate 333 and a rubber membrane 334. The long rod 331 is fixedly connected to the swing plate 32. The long rod 331 includes a thin rod area in the middle and thick rod areas at both ends. The sleeve 332 is sleeved outside the thin rod area. The two heat conducting plates 333 are rotatably connected to the sleeve 332. A cavity is provided inside the sleeve 332. The circulating water pipe 34 is connected to the cavity. The two rubber membranes 334 are provided on the sleeve 332. Outside, the sleeve 332 is provided with a notch facing the heat conducting plate 333, and the rubber membrane 334 covers the notch. The heat conducting plate 333 is provided with a water tank 6 at one end away from the sleeve 332, and a flexible pipe 7 is connected between the water tank 6 and the internal cavity of the sleeve 332. When the heat conducting plate 333 is tangent to the sleeve 332, one end of the heat conducting plate 333 extends to the outside of the long rod 331; when the heat conducting plate 333 squeezes the rubber membrane 334 to the maximum extent, both ends of the heat conducting plate 333 are inside the long rod 331.

[0031] During use, cold water is fed into one end of the circulating water pipe 34, and the cold water fills the two sleeves 332, absorbing the heat on the sleeves 332, the long rod 331 and the heat conducting plate 333, and finally flows out from the other end of the circulating water pipe 34, and water cooling is used to enhance the cooling capacity around the welding position of the workpiece. For the long rod 331 whose bottom is pressed against the workpiece, the water in the sleeve 332 flows into the water storage tank 6 through the flexible pipe 7, and the heat conducting plate 333 rotates downward under the action of its own gravity and the internal water until the heat conducting plate 333 is attached to the bottom workpiece, and the heat conducting plate 333 is used to expand the contact area between the heat conducting component 33 and the workpiece, thereby accelerating the cooling speed of the workpiece.

[0032] For the long rod 331 that is pressed against the workpiece on the side, since one end of the heat conducting plate 333 extends to the outside of the long rod 331, Figure 5 After the workpiece is on the right side of the heat conducting assembly 33, the heat conducting plate 333 on the right side in contact with the workpiece squeezes the workpiece and is then pushed by the workpiece to a position tangent to the sleeve 332. The heat conducting plate 333 on the left side is affected by the gravity of itself and the water in the water storage tank 6 and hangs down until the heat conducting plate 333 on the left side hangs down to the horizontal direction. The heat conducting plate 333 is limited by the flexible pipe 7 and cannot continue to hang down. When the staff pushes the long rod 331 to press the workpiece, the staff adjusts the angle of the right heat conducting plate 333 so that the right heat conducting plate 333 rotates upward when squeezing the workpiece until it rotates to the same direction as the workpiece surface. At this time, the heat conducting plate 333 is attached to the workpiece. In order to ensure that the heat conducting plate 333 can be attached to the workpiece, the staff can also manually assist in adjusting the direction of the heat conducting plate 333 so that both heat conducting plates 333 are attached to the workpiece surface, which can expand the contact area with the workpiece and adapt to workpieces at different angles for contact, thereby enhancing the cooling effect around the welding position of the workpiece.

[0033] Example 3 For the convenience of adjusting the intensity of the cooling assembly 3 extruding the workpiece, while ensuring that the cooling assembly 3 contacts the workpiece to cool it, also prevent the workpiece from being extruded and damaged, with reference to Figures 1-6 On the basis of example one, the moving frame 2 includes a sleeve ring 21, an outer expansion plate 22 and a telescopic assembly 23, the sleeve ring 21 is sleeved outside the laser welding head 1, the cylinder 31 is fixed with the sleeve ring 21 through the outer expansion plate 22, the telescopic assembly 23 is arranged outside the laser welding head 1, the movable end of the telescopic assembly 23 is fixed with the sleeve ring 21, the telescopic assembly 23 includes an outer tube 231, an inner rod 232 and a spring 233, the outer tube 231 is connected with the laser welding head 1, the inner rod 232 extends to the inside of the outer tube 231, the inner rod 232 and the outer tube 231 are fixed through the spring 233, the bottom of the inner rod 232 is fixed with the sleeve ring 21, a sliding groove matched with the outer tube 231 is arranged on one side of the laser welding head 1, the outer tube 231 extends into the sliding groove, and the top of the outer tube 231 is provided with a bolt 11, the bolt 11 penetrates through the outer tube 231.

[0034] In use, the outer tube 231 is slid downward along the sliding groove, the outer tube 231 pushes the inner rod 232 downward through the spring 233, and then pushes the cooling assembly 3 downward, the intensity of the cooling assembly 3 extruding the workpiece is measured when the laser welding head 1 contacts the workpiece, when the extrusion intensity needs to be reduced, the outer tube 231 is slid upward along the sliding groove, so that the intensity of the outer tube 231 acting on the cooling assembly 3 through the spring 233 is reduced, on the contrary, when the extrusion intensity needs to be increased, the outer tube 231 is slid downward along the sliding groove, so that the intensity of the outer tube 231 acting on the cooling assembly 3 through the spring 233 is increased, finally the bolt 11 is rotated to fix the outer tube 231 on the laser welding head 1, the intensity of the cooling assembly 3 acting on the workpiece is adjusted according to the needs, while ensuring that the cooling assembly 3 contacts the workpiece to cool it, the workpiece is prevented from being extruded and damaged by the cooling assembly 3.

[0035] In order to put away the cooling assembly 3 when the workpiece does not need to be cooled, reduce the influence of the cooling assembly 3 on the movement of the laser welding head 1, with reference to Figure 6 The inner wall of the outer tube 231 is fixedly connected with a stop block 8, the bottom of the stop block 8 is fixedly connected with a magnet block 9, the top of the inner rod 232 is fixedly connected with a metal block 10, and one end of the spring 233 is fixed on the metal block 10.

[0036] When there is no need to cool the workpiece, the staff pushes the inner rod 232 to move inside the outer tube 231. During the movement, the inner rod 232 squeezes and contracts the spring 233 until the metal block 10 contacts the magnet block 9. The magnetic force between the metal block 10 and the magnet block 9 overcomes the thrust of the spring 233, so that the inner rod 232 is adsorbed on the magnet block 9. When the workpiece needs to be cooled, the staff only needs to pull the inner rod 232 away from the magnet block 9 to increase the distance between the metal block 10 and the magnet block 9 and reduce the magnetic force. This makes it convenient to fold the cooling component 3 away from the workpiece when there is no need to cool the workpiece, thereby reducing the influence of the cooling component 3 on the movement of the laser welding head 1 on the workpiece surface.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for machining a cylinder head, comprising a laser welding head (1), characterized in that: A movable frame (2) is installed on the outside of the laser welding head (1), and a cooling component (3) is fixedly connected to the bottom of the movable frame (2); The cooling assembly (3) comprises a cylinder (31), a swing plate (32), a heat-conducting assembly (33) and a circulating water pipe (34). The two cylinders (31) are fixedly connected to the movable frame (2). The two heat-conducting assemblies (33) are respectively arranged on both sides of the cylinder (31). Both ends of the heat-conducting assembly (33) are rotatably connected to the cylinder (31) through the swing plate (32). The circulating water pipe (34) runs through the two cylinders (31).

2. The cylinder head processing welding device according to claim 1, characterized in that: An arc-shaped groove (4) is provided on the top of the cylinder (31), one end of the swing plate (32) extends into the interior of the arc-shaped groove (4), a spring (5) is provided in the arc-shaped groove (4), and both ends of the spring (5) are respectively fixed to the two swing plates (32).

3. The cylinder head processing welding device according to claim 1, characterized in that: The heat conduction assembly (33) includes a long rod (331), a sleeve (332), a heat conduction plate (333) and a rubber membrane (334). The long rod (331) is fixedly connected to the swing plate (32). The long rod (331) includes a thin rod area in the middle and thick rod areas at both ends. The sleeve (332) is sleeved outside the thin rod area. The two heat conduction plates (333) are both rotatably connected to the sleeve (332). A cavity is provided inside the sleeve (332). The circulating water pipe (34) is connected to the cavity. The two rubber membranes (334) are provided outside the sleeve (332). The sleeve (332) is provided with a notch facing the heat conduction plate (333). The rubber membrane (334) covers the notch.

4. The cylinder head machining welding device according to claim 3, characterized in that: A water storage tank (6) is provided at one end of the heat conducting plate (333) away from the sleeve (332), and a flexible pipe (7) is connected between the water storage tank (6) and the internal cavity of the sleeve (332).

5. The cylinder head machining welding device according to claim 3, characterized in that: When the heat conducting plate (333) is tangent to the sleeve (332), one end of the heat conducting plate (333) extends to the outside of the long rod (331); when the heat conducting plate (333) squeezes the rubber membrane (334) to the maximum extent, both ends of the heat conducting plate (333) are inside the long rod (331).

6. The cylinder head machining welding device according to claim 1, characterized in that: The movable frame (2) comprises a collar (21), an external expansion plate (22) and a telescopic assembly (23); the collar (21) is sleeved on the outside of the laser welding head (1); the cylinder (31) is fixed to the collar (21) via the external expansion plate (22); the telescopic assembly (23) is arranged on the outside of the laser welding head (1); and the movable end of the telescopic assembly (23) is fixed to the collar (21).

7. The cylinder head machining welding device according to claim 6, characterized in that: The telescopic assembly (23) comprises an outer tube (231), an inner rod (232) and a second spring (233); the outer tube (231) is connected to the laser welding head (1); one end of the inner rod (232) extends into the interior of the outer tube (231); the inner rod (232) and the outer tube (231) are fixed by the second spring (233); and the bottom of the inner rod (232) is fixed to the collar (21).

8. The cylinder head machining welding device according to claim 7, characterized in that: The inner wall of the outer tube (231) is fixedly connected to a stopper (8), the bottom of the stopper (8) is fixedly connected to a magnet block (9), the top of the inner rod (232) is fixedly connected to a metal block (10), and one end of the second spring (233) is fixed to the metal block (10).

9. The cylinder head machining welding device according to claim 7, characterized in that: A slide groove adapted to the outer tube (231) is provided on one side of the laser welding head (1); the outer tube (231) extends into the slide groove; a bolt (11) is provided on the top of the outer tube (231); the bolt (11) passes through the outer tube (231).

Images