Rotary atomization full-coverage laser welding cooling device

Abstract

The invention discloses a rotary atomization full-coverage laser welding cooling device which integrates rotation and cooling and cools different parts of a to-be-machined workpiece while welding the different parts of the to-be-machined workpiece. The cooling device comprises a welding table, a waste water collecting pool, a clamping mechanism and a cooling mechanism, and specifically, the waste water collecting pool is arranged in the middle of the upper table top of the welding table; the clamping mechanism comprises a first clamp assembly and a second clamp assembly, the first clamp assembly and the second clamp assembly are correspondingly arranged on the two sides of the waste water collecting pool, the first clamp assembly is fixedly arranged on the welding table, and the second clamp assembly is movably arranged on the welding table. The distance between the second clamp assembly and the first clamp assembly is adjusted to clamp the to-be-machined workpieces with different lengths; the cooling mechanism is movably arranged on the welding table and comprises a water spraying assembly movably erected above the waste water collecting pool, and the water spraying assembly is connected with an external water source through a hose and used for spraying water to cool the to-be-machined part on the clamping mechanism.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding cooling, and particularly relates to a rotary atomization full-coverage laser welding cooling device. BACKGROUND

[0002] In the laser welding process, local workpieces will produce significant heat accumulation due to high-temperature heat input, and timely and effective cooling is a key link for controlling the heat-affected zone and preventing material performance degradation and deformation; at present, in the cooling process of the welded workpieces, only the top of the workpiece can be cooled, and the bottom of the workpiece cannot be cooled synchronously, and such uneven heat dissipation causes inconsistent material shrinkage and generates asymmetric thermal stress in the interior, which easily causes the workpiece to warp, twist and other plastic deformation, and seriously affects the machining precision and product quality. SUMMARY

[0003] In order to make up for the deficiencies of the prior art, the application aims to provide a rotary atomization full-coverage laser welding cooling device which integrates rotation and cooling and realizes cooling while welding different parts of the workpiece to be machined, so as to solve the phenomenon that only the top of the workpiece to be machined can be cooled in the prior art, leading to uneven cooling of the workpiece and deformation.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of the application is as follows: The rotary atomization full-coverage laser welding cooling device comprises a welding table, and comprises: A wastewater collection pool is arranged in the middle of the top surface of the welding table; A clamping mechanism comprises a first clamp assembly and a second clamp assembly, the first clamp assembly and the second clamp assembly are correspondingly arranged on the two sides of the wastewater collection pool, the first clamp assembly is fixedly arranged on the welding table, and the second clamp assembly is movably arranged on the welding table; the distance between the second clamp assembly and the first clamp assembly is adjusted to clamp workpieces of different lengths; A cooling mechanism is movably arranged on the welding table and comprises a water spraying assembly movably arranged above the wastewater collection pool, the water spraying assembly is connected with an external water source through a hose, and is used for spraying water to cool the workpiece on the clamping mechanism.

[0005] Further, a rectangular groove is arranged on the welding table along the length direction of the welding table, the rectangular groove is arranged on one side of the wastewater collection pool corresponding to the second clamp assembly, a first lead screw is arranged in the rectangular groove, the first lead screw is arranged along the length direction of the rectangular groove, one side wall of the welding table is provided with a hand lever, one end of the hand lever penetrates into the rectangular groove and is fixedly connected with one end of the first lead screw, and the other end of the first lead screw is rotatably matched with the groove wall of the rectangular groove.

[0006] Further, the second clamp assembly comprises a second mounting plate, a second rotating plate is arranged on one side of the first clamp assembly relative to the second mounting plate, the second rotating plate is rotatably connected with the second mounting plate, and a second clamp is arranged on the second rotating plate; a threaded sleeve penetrating through the second mounting plate is integrally arranged at the lower part of the second mounting plate, the threaded sleeve is threadedly matched with the first lead screw, and the first lead screw is rotated by shaking the hand lever, and then the second rotating plate is linearly moved along the first lead screw.

[0007] Further, the first clamp assembly comprises a first mounting plate, a first rotating plate is arranged on one side of the second clamp assembly relative to the first mounting plate, and a motor is arranged on the other side of the first mounting plate; a driving shaft of the motor is connected with the first rotating plate by penetrating through the first mounting plate, the first rotating plate is rotated by starting the motor; and a first clamp is arranged on the first rotating plate.

[0008] Further, the cooling mechanism further comprises a second lead screw and an inverted L-shaped frame, the second lead screw is erected on the welding table through supports I and II arranged at the two ends of the second lead screw in a corresponding mode, a threaded sleeve integrally arranged at the lower part of the long arm of the inverted L-shaped frame is used for threadedly matching with the second lead screw; one end of the second lead screw is rotatably matched with the support I, and the other end of the second lead screw is provided with a chain wheel II by penetrating through the support II, the chain wheel II is drivingly connected with a chain wheel I arranged on the driving shaft of the motor through a chain, and the chain wheel I is arranged between the motor and the first mounting plate.

[0009] Further, the diameter of the chain wheel I is greater than the diameter of the chain wheel II.

[0010] Further, the water spraying assembly comprises an electric push rod and an inverted U-shaped pipe frame, the electric push rod is arranged at the end of the short arm of the inverted L-shaped frame, the electric push rod is fixed with the middle part of the top pipe of the U-shaped pipe frame after penetrating through the end of the short arm of the inverted L-shaped frame, and a plurality of atomizing water spraying heads are equally arranged on the inner walls of the U-shaped pipe frame and are in communication with the U-shaped pipe frame through threads to atomize the cooling liquid.

[0011] Further, the first clamp comprises at least three first clamps which are equally arranged on the first rotating plate.

[0012] Further, the number of the second clamps is the same as that of the first clamps.

[0013] Further, the first clamp and the second clamp are consistent in structure and are both adjustable clamps.

[0014] Compared with the prior art, the present application has the following advantages: The rotating assembly formed by the motor, the driving shaft and the first rotating plate can drive the clamped workpiece to rotate, and the plurality of atomizing water spray heads in the inner wall of the U-shaped pipe frame can spray the atomized cooling liquid to the top, bottom and side of the workpiece in the rotating process, so that the phenomenon of uneven cooling of the workpiece and deformation of the workpiece is solved; the linkage design of the second screw rod and the rotating assembly can ensure that the workpiece rotates and cools on one side, and the U-shaped metal pipe can also reciprocate to cool, further improving the uniformity of the workpiece cooling; and the electric push rod can drive the U-shaped pipe frame to move up and down, flexibly adjust the water spraying height, adapt to workpieces of different thicknesses, and greatly improve the adaptability of the device to diversified workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a front view structural schematic diagram of the cooling device of the application. Fig. 2 It is a front view structural schematic diagram of the cooling device of the application. Fig. 3 It is a front view structural schematic diagram of the cooling device of the application.

[0016] In the figure: 1-welding table, 11-rectangular groove, 2-waste water collection pool, 3-clamping mechanism, 31-first clamp assembly, 311-first mounting plate, 312-first rotating plate, 313-motor, 314-driving shaft, 315-first clamp, 316-chain wheel I, 317-chain, 32-second clamp assembly, 321-second mounting plate, 322-second rotating plate, 323-second clamp, 4-cooling mechanism, 41-water spraying assembly, 411-electric push rod, 412-U-shaped pipe frame, 413-atomizing water spray head, 42-second screw rod, 43-inverted L-shaped frame, 44-support I, 45-support II, 46-chain wheel II, 5-first screw rod, 6-hand lever. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application clearer, the application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0018] As Figs. 1-3As shown, the embodiment provides a rotating atomization full-coverage laser welding cooling device, which comprises a welding table 1, a wastewater collection pool 2, a clamping mechanism 3 and a cooling mechanism 4. Specifically, the wastewater collection pool 2 is arranged at the middle of the top surface of the welding table 1; the clamping mechanism 3 comprises a first clamp assembly 31 and a second clamp assembly 32, the first clamp assembly 31 and the second clamp assembly 32 are correspondingly arranged on the two sides of the wastewater collection pool 2, the first clamp assembly 31 is fixedly arranged on the welding table 1, the second clamp assembly 32 is movably arranged on the welding table 1, and the distance between the second clamp assembly 32 and the first clamp assembly 31 is adjusted to clamp workpieces (preferably cylindrical workpieces) of different lengths; the cooling mechanism 4 is movably arranged on the welding table 1 and comprises a water spraying assembly 41 movably arranged above the wastewater collection pool 2, the water spraying assembly 41 is connected with an external water source through a hose, and is used for spraying water to cool the workpiece on the clamping mechanism 3.

[0019] In the embodiment, the welding table 1 is provided with a rectangular groove 11 along the length direction thereof, the rectangular groove 11 is arranged on one side of the wastewater collection pool 2 corresponding to the second clamp assembly 32, a first lead screw 5 is arranged in the rectangular groove 11, the first lead screw 5 is arranged along the length direction of the rectangular groove 11, and a hand lever 6 is arranged on one side wall of the welding table 1, one end of the hand lever 6 penetrates into the rectangular groove 11 and is fixedly connected with one end of the first lead screw 5, and the other end of the first lead screw 5 is rotatably matched with the groove wall of the rectangular groove 11. The second clamp assembly 32 comprises a second mounting plate 321, a second rotating plate 322 is arranged on one side of the second mounting plate 321 opposite to the first clamp assembly 31, the second rotating plate 322 is rotatably connected with the second mounting plate 321, a plurality of second clamps 323 are equally arranged around the circumference of the second rotating plate 322; a threaded sleeve penetrating through the second mounting plate 321 is integrally arranged at the lower part of the second mounting plate 321, the threaded sleeve is threadedly matched with the first lead screw 5, the hand lever 6 is shaken to drive the first lead screw 5 to rotate, and then the second rotating plate 322 is driven to move linearly along the first lead screw 5.

[0020] Continuing to refer to Fig. 3It can be seen that the first clamp assembly 31 comprises a first mounting plate 311, which is provided with a first rotating plate 312 on one side and a motor 313 on the other side relative to the second clamp assembly 32. The driving shaft 314 of the motor 313 is connected to the center of the first rotating plate 312 through the first mounting plate 311. The motor 313 is started to drive the first rotating plate 312 to rotate. A plurality of first clamps 315 are evenly arranged around the circumference of the first rotating plate 312. The first mounting plate 311 provides stable rotating support for the driving shaft 314. The motor 313 serves as a power source, and its output end is rigidly connected to the driving shaft 13 through a shaft coupling. When the motor 313 is started, the driving shaft 314 can be driven to rotate around the through hole in the center of the first mounting plate 311, thereby driving the first rotating plate 312 fixed to the through end of the driving shaft 314 to rotate synchronously, and then driving the second rotating plate 322 to rotate synchronously. That is, the rotation of the driving shaft 314 can drive the whole workpiece to rotate, so that different surfaces of the workpiece, such as the top and bottom, can be alternately placed in the cooling area, thereby solving the temperature difference problem caused by single-direction cooling.

[0021] In the embodiment, the first clamps 315 are at least three and are evenly arranged on the first rotating plate 312. The number of the second clamps 323 is the same as that of the first clamps 315. The first clamps 315 and the second clamps 323 have the same structure and are adjustable clamps, each comprising a hand screw and a clamp plate. The clamp plate is tightly attached to the outer wall of the workpiece to clamp the workpiece. That is, the clamp plate is moved to the center of the first rotating plate 312 or the second rotating plate 322 by rotating the hand screw to clamp the workpiece. The first clamps 315 and the second clamps 323 can also adopt a pneumatic clamp jaw or a manual screw clamp jaw structure, which can stabilize the workpiece and adapt to workpieces of different widths at the same time.

[0022] It can be understood that during the welding process of the workpiece, the motor 313 is started to drive the workpiece to be welded to rotate, thereby exposing the position of the workpiece that has not been welded, facilitating the workers to weld the workpiece comprehensively, and the workpiece is not cooled by water during the welding process.

[0023] The cooling mechanism 4 further comprises a second screw rod 42 and an inverted L-shaped frame 43. The second screw rod 42 is arranged on the welding table 1 through the support I 44 and the support II 45 arranged at both ends of the second screw rod 42. The long arm of the inverted L-shaped frame 43 is integrally provided with a threaded sleeve at the lower part, which is used for threaded cooperation with the second screw rod 42. One end of the second screw rod 42 is rotatably connected with the support I 44, and the other end passes through the support II 45 and is provided with a chain wheel II 46 through a flat key. The chain wheel II 46 is drivingly connected with the chain wheel I 316 arranged on the driving shaft 314 of the motor 313 through a chain 317. The chain wheel I 316 is arranged between the motor 313 and the first mounting plate 311. The diameter of the chain wheel I 316 is larger than that of the chain wheel II 46. When the driving shaft 314 rotates, the chain wheel I 316 rotates synchronously, and the chain wheel II 46 and the second screw rod 42 are driven to rotate through the meshing transmission of the chain 317, so that the clamping mechanism 3 and the cooling mechanism 4 are mechanically linked. Because the diameter of the chain wheel I 316 is larger than that of the chain wheel II 46, according to the chain wheel transmission characteristics, the rotating speed of the chain wheel II 46 is higher than that of the chain wheel I 316, so that the moving speed of the second screw rod 42 driving the inverted L-shaped frame 43 is adapted to the rotating speed of the workpiece on the clamping mechanism 3, and the uniformity of cooling is ensured.

[0024] The water spraying assembly 41 comprises an electric push rod 411 and an inverted U-shaped pipe frame 412. The electric push rod 411 is arranged at the end of the short arm of the inverted L-shaped frame 43, and the electric push rod 411 is fixed to the middle part of the top pipe of the U-shaped pipe frame 412 after passing through the end of the short arm of the inverted L-shaped frame 43. A plurality of atomizing water spraying heads 413 are arranged on the inner wall of the U-shaped pipe frame 412. The atomizing water spraying heads 413 are connected with the U-shaped pipe frame 412 through threads to atomize the cooling liquid. The above design can realize the adjustment of the transverse position of the water spraying assembly 41 along the second screw rod 42, expand the cooling coverage, and increase the uniformity of cooling in cooperation with the rotating workpiece. Specifically, the cylinder body of the electric push rod 411 is fixed to the top of the inverted L-shaped frame 43, and the vertical height of the U-shaped pipe frame 412 can be accurately adjusted through the extension and retraction of the electric push rod 411, so as to adapt to the cooling needs of workpieces of different thicknesses. The U-shaped pipe frame 412 is made of corrosion-resistant metal material, the opening of which faces the workpiece direction, and a plurality of atomizing water spraying heads 413 are uniformly distributed along the length direction of the inner wall. The atomizing water spraying heads 413 are connected with the U-shaped pipe frame 412 through threads, can atomize the cooling liquid into fine droplets, increase the contact area with the workpiece, and one end of the U-shaped pipe frame 412 is connected with an external water source such as a water pump or a liquid storage tank through a hose. The cooling liquid provided by the external water source is divided by the U-shaped pipe frame 412 and uniformly sprayed to the surface of the workpiece through the atomizing water spraying heads 413 to achieve cooling.

[0025] The wastewater collection tank 2 is a rectangular tank with an open top, which is fixed below the welding processing area of the workpiece to be processed on the welding table 1 by bolts, and its size covers the moving range of the U-shaped pipe frame 412 and the projection area of the workpiece to be processed. It can collect all the wastewater, including atomized cooling liquid and liquid dripping from the surface of the workpiece to be processed, during the cooling process, to prevent the wastewater from polluting the welding table 1 and the working environment. A drain can be provided at the bottom of one side of the wastewater collection tank 2 to facilitate the periodic discharge of the collected wastewater for filtration treatment or recycling.

[0026] The specific operation process is as follows: (1) First, the fixing stage of the workpiece to be processed is completed by adjusting the assembly (i.e., the cooperation of the hand lever 6 and the first screw rod 5) and the rotating assembly (i.e., the cooperation of the motor 313, the drive shaft 314, the first rotating plate 312, and the second rotating plate 322). According to the length of the workpiece to be processed, the hand lever 6 drives the first screw rod 5 to rotate, driving the second mounting plate 321 in the rectangular groove 11 to move transversely along the first screw rod 5, adjusting the distance between the second clamp assembly 32 and the first clamp assembly 31, clamping one end of the workpiece to be processed on the second clamp 323, and the other end is fixed by the first clamp 315. The second clamp 323 is connected with the second rotating plate 322 through a damping rotating shaft, and can be flexibly adjusted in angle with the workpiece to be processed, ensuring stable clamping and not hindering the rotation of the workpiece to be processed; (2) Then, the worker uses the laser welding equipment to weld the workpiece to be processed. After welding, the electric push rod 411 is started, and the telescopic end drives the U-shaped pipe frame 412 to move up and down. According to the thickness of the workpiece to be processed, the atomized water spray head 413 is adjusted to the appropriate height to ensure that the cooling liquid can accurately cover the surface of the workpiece; at the same time, the U-shaped pipe frame 412 is connected with the external water source through the hose to provide continuous cooling liquid supply for cooling. The motor 313 is started, and the drive shaft 314 is driven to rotate on the first rotating plate 312, driving the first clamp 315, the second clamp 323, and the workpiece to be processed to rotate synchronously, so that the top, bottom, and side of the workpiece to be processed can alternately enter the cooling area, solving the temperature difference problem caused by single direction cooling; (3) At the same time, the sprocket I 316 on the drive shaft 314 drives the sprocket II 46 to rotate through the chain transmission, and the sprocket II 46 drives the second screw rod 42 to rotate. Since the second screw rod 42 is threadedly connected with the bottom of the inverted L-shaped frame 43, the rotary motion of the second screw rod 42 is converted into the transverse reciprocating motion of the inverted L-shaped frame 43, driving the water spraying assembly to expand the cooling coverage range, adapting to the cooling needs of workpieces to be processed of different sizes. During the cooling process, the cooling liquid delivered by the external water source is divided by the U-shaped pipe frame 412, and then atomized into fine droplets by the multiple atomized water spray heads 413 evenly distributed on the inner wall, increasing the contact area with the surface of the workpiece to be processed and improving the cooling efficiency. The wastewater generated by cooling falls into the wastewater collection tank 2 located below the U-shaped pipe frame 412, realizing centralized collection and avoiding pollution of the working environment, facilitating subsequent treatment or recycling.

[0027] Through the synergistic operation of the above structure, the device realizes the comprehensive effects of full-range uniform cooling of the workpiece, adjustable cooling range, flexible workpiece fixing and centralized recovery of waste water, effectively solving the problems of uneven cooling, poor adaptability and the like existing in the traditional cooling device.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating atomizing full-coverage laser welding cooling device, comprising a welding table (1), characterized in that, include: Wastewater collection tank (2) is located in the middle of the upper surface of the welding table (1); The clamping mechanism (3) includes a first clamping assembly (31) and a second clamping assembly (32). The first clamping assembly (31) and the second clamping assembly (32) are respectively placed on both sides of the wastewater collection tank (2). The first clamping assembly (31) is fixedly set on the welding table (1), and the second clamping assembly (32) is movably set on the welding table (1). The distance between the second clamping assembly (32) and the first clamping assembly (31) can be adjusted to clamp workpieces of different lengths. The cooling mechanism (4) is movably mounted on the welding table (1) and includes a water spraying assembly (41) movably mounted above the wastewater collection tank (2). The water spraying assembly (41) is connected to an external water source through a hose to spray water to cool the workpiece on the clamping mechanism (3).

2. The rotating atomizing full-coverage laser welding cooling device according to claim 1, characterized in that, The welding table (1) is provided with a rectangular groove (11) along its length direction. The rectangular groove (11) is provided on one side of the wastewater collection tank (2) corresponding to the second clamp assembly (32). A first lead screw (5) is provided in the rectangular groove (11). The first lead screw (5) is provided along the length direction of the rectangular groove (11). A hand crank (6) is provided on one side wall of the welding table (1). One end of the hand crank (6) is inserted into the rectangular groove (11) and fixedly connected to one end of the first lead screw (5). The other end of the first lead screw (5) is rotatably engaged with the groove wall of the rectangular groove (11).

3. The rotating atomizing full-coverage laser welding cooling device according to claim 2, characterized in that, The second clamping assembly (32) includes a second mounting plate (321). A second rotating plate (322) is provided on one side of the second mounting plate (321) opposite to the first clamping assembly (31). The second rotating plate (322) is rotatably connected to the second mounting plate (321). A second clamp (323) is provided on the second rotating plate (322). A threaded sleeve is integrally provided at the lower part of the second mounting plate (321) and it is threadedly engaged with the first lead screw (5). The hand crank (6) is turned to drive the first lead screw (5) to rotate, and then the second rotating plate (322) moves linearly along the first lead screw (5).

4. The rotating atomizing full-coverage laser welding cooling device according to claim 3, characterized in that, The first clamping assembly (31) includes a first mounting plate (311). The first mounting plate (311) has a first rotating plate (312) on one side opposite to the second clamping assembly (32) and a motor (313) on the other side. The drive shaft (314) of the motor (313) passes through the first mounting plate (311) and is connected to the first rotating plate (312). The motor (313) is started to drive the first rotating plate (312) to rotate. A first clamp (315) is provided on the first rotating plate (312).

5. The rotating atomizing full-coverage laser welding cooling device according to claim 4, characterized in that, The cooling mechanism (4) further includes a second lead screw (42) and an inverted L-shaped bracket (43). The second lead screw (42) is mounted on the welding table (1) through bracket I (44) and bracket II (45) provided at its two ends. The threaded sleeve integrally provided at the lower part of the long arm of the inverted L-shaped bracket (43) is used to thread with the second lead screw (42). One end of the second lead screw (42) is rotatably engaged with the bracket I (44), and the other end passes through the bracket II (45) to set a sprocket II (46). The sprocket II (46) is connected to the sprocket I (316) on the drive shaft (314) of the motor (313) through a chain (317). The sprocket I (316) is placed between the motor (313) and the first mounting plate (311).

6. The rotating atomizing full-coverage laser welding cooling device according to claim 5, characterized in that, The diameter of sprocket I (316) is larger than the diameter of sprocket II (46).

7. The rotating atomizing full-coverage laser welding cooling device according to claim 5, characterized in that, The water spray assembly (41) includes an electric push rod (411) and an inverted U-shaped tube frame (412). The electric push rod (411) is located at the end of the short arm of the inverted L-shaped frame (43). After passing through the end of the short arm of the inverted L-shaped frame (43), the electric push rod (411) is fixed to the middle of the top tube of the U-shaped tube frame (412). The inner wall of the U-shaped tube frame (412) is evenly provided with a plurality of atomizing water spray heads (413). The atomizing water spray heads (413) are connected to the U-shaped tube frame (412) by threads to atomize the coolant.

8. The rotating atomizing full-coverage laser welding cooling device according to claim 4, characterized in that, The first clamp (315) includes at least three, which are equally disposed on the first rotating plate (312).

9. A rotating atomizing full-coverage laser welding cooling device according to claim 8, characterized in that, The number of the second clamps (323) is the same as that of the first clamps (315).

10. A rotating atomizing full-coverage laser welding cooling device according to claim 9, characterized in that, The first clamp (315) and the second clamp (323) have the same structure, both being adjustable clamps.

Images