Welding protection device for precision machining

Abstract

The invention relates to the technical field of welding equipment, in particular to a welding protection device for precision machining, which comprises a frame, a positioning plate is fixed at the bottom of the frame, a fixing column penetrates through the positioning plate, the fixing column is rotatably connected with the positioning plate, and a rotating mechanism is arranged on the positioning plate. A first motor is installed on one side wall of the frame, a first threaded rod is installed at the output end of the first motor, the first threaded rod penetrates through the side wall of the frame and is rotationally connected with the side wall of the frame, the first threaded rod is connected with a clamping mechanism, a fixing plate is fixed to the top of the frame, and the end of the first threaded rod is rotationally connected with the fixing plate. The fixing plate is connected with a cooling mechanism, and the cooling mechanism is used for cooling the welded pipe fitting; after the pipe fitting is welded, the welded pipe fitting is cooled by the cooling liquid, so that the damage to a worker caused by over-high temperature of the welded pipe fitting can be effectively avoided, and the worker is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and specifically relates to a welding protection device for precision machining. Background Art

[0002] Precision machinery refers to mechanical systems with high precision, high stability, small scale or complex functions, and is widely used in high-end manufacturing, scientific research, medical treatment and other fields. In the field of precision machinery, pipe fittings belong to key functional components, and two pipe fittings usually need to be welded together during the processing of pipe fittings.

[0003] Currently, when welding two pipe fittings together, one end of one of the pipe fittings is mostly inserted into the other pipe fitting, and then a welding tool is used to weld the gap between the two pipe fittings. However, in the prior art, the welded pipe fittings cannot be cooled in time after welding, and the temperature of the welded pipe fittings is relatively high, which is likely to cause injury to the staff. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding protection device for precision machining to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A welding protection device for precision machining includes a frame. A positioning plate is fixed at the bottom of the frame. A fixing column penetrates through the positioning plate, and the fixing column is rotatably connected to the positioning plate. A rotating mechanism is provided on the positioning plate, and the rotating mechanism is used to drive the fixing column to rotate. A first motor is installed on one side wall of the frame, and the output end of the first motor is installed with a first threaded rod. The first threaded rod penetrates through the side wall of the frame and is rotatably connected to the side wall of the frame. The first threaded rod is connected with a clamping mechanism, and the clamping mechanism is used to clamp the pipe fitting. A fixing plate is fixed at the top of the frame, and the end of the first threaded rod is rotatably connected to the fixing plate. The fixing plate is connected with a cooling mechanism, and the cooling mechanism is used to cool the welded pipe fitting.

[0007] Preferably: The rotating mechanism includes a first gear fixed to the outside of the fixing column. A second motor is installed on the positioning plate. The output end of the second motor penetrates through the positioning plate and is fixedly connected with a second gear. The second gear meshes with the first gear.

[0008] Preferably: The clamping mechanism includes a plurality of wedge-shaped blocks arranged in a circumferential distribution on the outside of the fixing column. Each wedge-shaped block is fixed with a resisting rod. The resisting rod penetrates through the side wall of the fixing column. A first elastic member is arranged outside the resisting rod, and both ends of the first elastic member are respectively connected with the wedge-shaped block and the outer wall of the fixing column. The first threaded rod is connected with an extrusion assembly, and the extrusion assembly is used to extrude the inclined surface of the wedge-shaped block.

[0009] Preferably, the extrusion assembly includes a moving block threadedly connected to the first threaded rod. A fixing rod is fixed to the end of the moving block. An extrusion column is rotatably connected to the end of the fixing rod. One end of the extrusion column away from the fixing rod extends into the fixing column and is slidably connected to the inner wall of the fixing column. A plurality of pushing plates distributed in a circumferential manner are fixed on the side wall of the extrusion column. Slideways distributed in a circumferential manner and adapted to the pushing plates are provided on the side wall of the fixing column. The pushing plates penetrate through the slideways and are slidably connected to the slideways. Push rods for extruding the inclined surface of the wedge-shaped block are fixed on the side walls of the pushing plates.

[0010] Preferably, the cooling mechanism includes a pressure cylinder fixedly connected to the fixing plate. A piston is slidably connected inside the pressure cylinder. The piston is connected to a driving assembly for driving the piston to move inside the pressure cylinder. The pressure cylinder is communicated with a liquid outlet pipe.

[0011] Preferably, the driving assembly includes a threaded sleeve fixedly connected to the piston. A second threaded rod is threadedly connected to one end of the threaded sleeve away from the piston. The second threaded rod penetrates through the end of the pressure cylinder and is rotatably connected to the end of the pressure cylinder. The second threaded rod is connected to a rotating component for driving the second threaded rod to rotate. Symmetrically distributed sliders are fixed on the side wall of the threaded sleeve. Slide grooves adapted to the sliders are provided on the inner wall of the pressure cylinder. The sliders are located inside the slide grooves and are slidably connected to the slide grooves.

[0012] Preferably, the rotating component includes a turntable fixed to the end of the second threaded rod. A plurality of grooves distributed in a circumferential manner are provided on the side wall of the turntable. A blocking block is rotatably connected inside each groove. The blocking block extends outside the groove. One side of the blocking block is connected to the inner wall of the groove through a second elastic member. The other side of the blocking block abuts against the inner wall of the groove. A third gear capable of pushing the blocking block is fixed to the outside of the first threaded rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: When welding a pipe fitting, the present invention drives the fixing rod to move through the threaded connection between the first threaded rod and the moving block. The fixing rod drives the extrusion column to move. While the extrusion column moves, it drives the pushing plate to move inside the slideway. The pushing plate drives the push rod to move. The push rod extrudes the inclined surface of the wedge-shaped block. After the wedge-shaped block is subjected to pressure, it drives the abutting rod to move until the end of the abutting rod is in close contact with the outer wall of the pipe fitting. The pipe fitting is fixed by a plurality of abutting rods distributed in a circumferential manner, which can effectively improve the stability of the pipe fitting during the welding process.

[0014] After the pipe fitting is welded, the first threaded rod rotates in the reverse direction. When the first threaded rod rotates in the reverse direction, on the one hand, the fixing state of the pipe fitting by the abutting rod is released, and on the other hand, the third gear is pushed to drive the block, and the block drives the turntable, so that the turntable can drive the second threaded rod to rotate. The piston is driven to move through the threaded connection between the second threaded rod and the threaded sleeve. While the piston moves, the coolant inside the pressure cylinder is squeezed, so that the coolant is discharged from the liquid outlet pipe and drips on the surface of the pipe fitting. The welded pipe fitting is cooled by the coolant, which can effectively avoid the damage to the staff caused by the too high temperature of the welded pipe fitting, and plays a protective role for the staff. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the protection device in the embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of the inner structure of the frame in the embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram of the connection structure between the turntable and the third gear in the embodiment of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the fixed column in the embodiment of the present invention.

[0019] Figure 5 It is a front view of the inner structure of the pressure cylinder in the embodiment of the present invention.

[0020] In the figure: 1-frame; 2-rotating mechanism; 21-first gear; 22-second gear; 23-second motor; 3-clamping mechanism; 31-wedge block; 32-abutting rod; 33-first elastic member; 34-push rod; 35-push plate; 36-slideway; 37-extrusion column; 38-fixed rod; 39-moving block; 4-cooling mechanism; 41-pressure cylinder; 42-liquid outlet pipe; 43-piston; 44-chute; 45-slider; 46-threaded sleeve; 47-second threaded rod; 48-turntable; 49-trough; 410-block; 411-second elastic member; 412-third gear; 5-first threaded rod; 6-first motor; 7-positioning plate; 8-fixed column; 9-fixed plate. Detailed Embodiment

[0021] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0022] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0023] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 4 , a welding protection device for precision machining, comprising a frame 1, a positioning plate 7 is fixed at the bottom of the frame 1, a fixing column 8 penetrates through the inside of the positioning plate 7, and the fixing column 8 is rotatably connected to the positioning plate 7. A rotating mechanism 2 is arranged on the positioning plate 7, and the rotating mechanism 2 is used to drive the fixing column 8 to rotate. A first motor 6 is installed on one side wall of the frame 1, a first threaded rod 5 is installed at the output end of the first motor 6, and the first threaded rod 5 penetrates through the side wall of the frame 1 and is rotatably connected to the side wall of the frame 1. The first threaded rod 5 is connected with a clamping mechanism 3, and the clamping mechanism 3 is used to clamp the pipe fitting. A fixing plate 9 is fixed at the top of the frame 1, and the end of the first threaded rod 5 is rotatably connected to the fixing plate 9. The fixing plate 9 is connected with a cooling mechanism 4, and the cooling mechanism 4 is used to cool the welded pipe fitting.

[0024] In this embodiment, when the device welds precision parts such as pipe fittings, one end of the pipe fitting to be welded is inserted into the inside of the fixing column 8, and then the first motor 6 is started. The first motor 6 drives the first threaded rod 5 to rotate. While the first threaded rod 5 rotates, the operation of the clamping mechanism 3 is triggered, and the pipe fitting inside the fixing column 8 is fixed by the clamping mechanism 3, which can effectively ensure the stability of the pipe fitting during the welding process. After the pipe fitting is fixed, the pipe fitting can be fixed by a welding tool. During the welding process of the pipe fitting, the rotating mechanism 2 on the positioning plate 7 drives the fixing column 8 to rotate, and the fixing column 8 drives the pipe fitting to rotate through the clamping mechanism 3, so that the welding tool can weld the pipe fitting comprehensively. Among them, the welding tool can be driven by a five-axis robot to weld the pipe fitting, or the welding tool can be manually operated to weld the pipe fitting. After the pipe fitting is welded, the first motor 6 drives the first threaded rod 5 to rotate in the reverse direction. While the first threaded rod 5 rotates in the reverse direction, on the one hand, the fixing of the pipe fitting by the clamping mechanism 3 is released, which is convenient for the staff to take out the pipe fitting from the inside of the fixing column 8. On the other hand, the first threaded rod 5 drives the cooling mechanism 4 to operate, and the welded pipe fitting is cooled by the cooling mechanism 4, so as to reduce the temperature of the welded pipe fitting, which can effectively avoid the damage caused to the staff by the too high temperature of the welded pipe fitting and play a protective role for the staff.

[0025] Please refer to Figure 2 , the rotating mechanism 2 includes a first gear 21 fixed outside the fixing column 8, a second motor 23 is installed on the positioning plate 7, the output end of the second motor 23 penetrates through the positioning plate 7 and is fixedly connected with a second gear 22, and the second gear 22 meshes with the first gear 21;

[0026] When welding pipe fittings, the second motor 23 is started. The second motor 23 drives the second gear 22 to rotate. The rotation of the second gear 22 drives the fixed column 8 to rotate through the engagement with the first gear 21. The fixed column 8 drives the pipe fittings to move in a circular motion through the clamping mechanism 3, which facilitates the welding tool to weld the pipe fittings comprehensively and effectively improves the welding efficiency of the pipe fittings.

[0027] Please refer to Figure 4 , the clamping mechanism 3 includes a plurality of wedge blocks 31 arranged on the outside of the fixed column 8 and distributed in a circular pattern. Each wedge block 31 is fixed with a pressing rod 32. The pressing rod 32 penetrates the side wall of the fixed column 8. A first elastic member 33 is arranged outside the pressing rod 32. The two ends of the first elastic member 33 are respectively connected to the wedge block 31 and the outer wall of the fixed column 8. The first threaded rod 5 is connected with an extrusion assembly for extruding the inclined surface of the wedge block 31;

[0028] After one end of the pipe fitting is inserted into the fixed column 8, the first motor 6 drives the first threaded rod 5 to rotate. While the first threaded rod 5 rotates, it extrudes the inclined surfaces of the plurality of wedge blocks 31 through the extrusion assembly. After the wedge blocks 31 are subjected to pressure, they drive the pressing rods 32 to move until the ends of the pressing rods 32 are in close contact with the outer wall of the pipe fitting. The pipe fitting is fixed by the plurality of pressing rods 32 distributed in a circular pattern, which can effectively improve the stability of the pipe fitting during the welding process. After the pipe fitting is welded, the first motor 6 drives the first threaded rod 5 to rotate in the reverse direction, and the extrusion assembly no longer extrudes the inclined surfaces of the wedge blocks 31. The wedge blocks 31 drive the pressing rods 32 to reset under the action of the first elastic member 33, thereby releasing the fixed state of the pressing rods 32 on the pipe fitting. The first elastic member 33 can be a spring.

[0029] Please refer to Figure 2 and Figure 4 , the extrusion assembly includes a moving block 39 threadedly connected to the first threaded rod 5. The end of the moving block 39 is fixed with a fixed rod 38. The end of the fixed rod 38 is rotatably connected with an extrusion column 37. One end of the extrusion column 37 away from the fixed rod 38 extends into the fixed column 8 and is slidably connected with the inner wall of the fixed column 8. A plurality of push plates 35 distributed in a circular pattern are fixed on the side wall of the extrusion column 37. Slideways 36 distributed in a circular pattern and adapted to the push plates 35 are provided on the side wall of the fixed column 8. The push plates 35 penetrate the slideways 36 and are slidably connected with the slideways 36. Push rods 34 for extruding the inclined surfaces of the wedge blocks 31 are fixed on the side walls of the push plates 35;

[0030] When fixing the pipe fitting, the threaded connection between the first threaded rod 5 and the moving block 39 drives the fixing rod 38 to move. The fixing rod 38 drives the extrusion column 37 to move. While the extrusion column 37 is moving, it drives the push plate 35 to move inside the slideway 36. The push plate 35 drives the push rod 34 to move, so that the push rod 34 can extrude the inclined surface of the wedge block 31, and then the wedge block 31 can drive the abutting rod 32 to fix the pipe fitting. The rotational connection between the fixing rod 38 and the extrusion column 37 can avoid the interference caused by the fixing rod 38 to the rotation of the fixed column 8.

[0031] Please refer to Figure 5 , the cooling mechanism 4 includes a pressure cylinder 41 fixedly connected to the fixing plate 9. A piston 43 is slidably connected inside the pressure cylinder 41. The piston 43 is connected with a driving component, and the driving component is used to drive the piston 43 to move inside the pressure cylinder 41. The pressure cylinder 41 is communicated with a liquid outlet pipe 42;

[0032] When the pipe fitting is welded, the driving component drives the piston 43 to move inside the pressure cylinder 41. While the piston 43 is moving, it squeezes the coolant inside the pressure cylinder 41, so that the coolant is discharged from the liquid outlet pipe 42 and drips on the surface of the pipe fitting. The welded pipe fitting is cooled by the coolant, which can effectively avoid the damage to the staff caused by the over-high temperature of the welded pipe fitting and plays a protective role for the staff.

[0033] Please refer to Figure 5 , the driving component includes a threaded sleeve 46 fixedly connected to the piston 43. A second threaded rod 47 is threadedly connected to one end of the threaded sleeve 46 away from the piston 43. The second threaded rod 47 penetrates through the end of the pressure cylinder 41 and is rotatably connected to the end of the pressure cylinder 41. The second threaded rod 47 is connected with a rotating component, and the rotating component is used to drive the second threaded rod 47 to rotate. Symmetrically distributed sliders 45 are fixed on the side wall of the threaded sleeve 46. A sliding groove 44 adapted to the slider 45 is provided on the inner wall of the pressure cylinder 41. The slider 45 is located inside the sliding groove 44 and is slidably connected to the sliding groove 44;

[0034] After the pipe fitting is welded, the rotating component drives the second threaded rod 47 to rotate. The threaded connection between the second threaded rod 47 and the threaded sleeve 46 drives the piston 43 to move, so that the piston 43 can extrude the cooling inside the pressure cylinder 41 from the liquid outlet pipe 42, thus achieving the purpose of cooling. The sliding groove 44 can play a limiting role on the threaded sleeve 46 through the slider 45, improving the stability of the threaded sleeve 46 during movement.

[0035] Please refer to Figure 3, the rotating member includes a turntable 48 fixed to the end of the second threaded rod 47. A plurality of grooves 49 are provided on the side wall of the turntable 48 and are circumferentially distributed. A stopper 410 is rotatably connected inside each groove 49. The stopper 410 extends outside the groove 49. One side of the stopper 410 is connected to the inner wall of the groove 49 through a second elastic member 411, and the other side of the stopper 410 is in contact connection with the inner wall of the groove 49. A third gear 412 capable of pushing the stopper 410 is fixed to the outside of the first threaded rod 5;

[0036] When the pipe fitting is welded, the first motor 6 drives the first threaded rod 5 to rotate in the reverse direction. The first threaded rod 5 drives the third gear 412 to rotate. While the third gear 412 rotates, it pushes the stopper 410 through the teeth. The stopper 410 pushes the turntable 48, so that the turntable 48 can drive the second threaded rod 47 to rotate, and further the piston 43 can squeeze the coolant inside the pressure cylinder 41. When the pipe fitting needs to be welded, the first motor 6 drives the first threaded rod 5 to rotate in the forward direction. At this time, while the teeth rotate, they push the stopper 410 through the teeth. The stopper 410 rotates itself instead of driving the turntable 48 to rotate, thus realizing the one-way rotation of the second threaded rod 47, and avoiding the phenomenon that the coolant drips from the liquid outlet pipe 42 when the pipe fitting is fixed. The second elastic member 411 can be a spring, which can play a role in resetting the stopper 410.

[0037] Working principle: When welding precision parts of pipe fittings, one end of the pipe fitting to be welded is inserted into the fixed column 8. Then, the first motor 6 is started. The first motor 6 drives the first threaded rod 5 to rotate. Through the threaded connection between the first threaded rod 5 and the moving block 39, the fixed rod 38 is driven to move. The fixed rod 38 drives the extrusion column 37 to move. While the extrusion column 37 is moving, it drives the push plate 35 to move inside the slideway 36. The push plate 35 drives the push rod 34 to move. The push rod 34 presses the inclined surface of the wedge block 31. After the wedge block 31 is subjected to pressure, it drives the abutting rod 32 to move until the end of the abutting rod 32 is in close contact with the outer wall of the pipe fitting. The pipe fitting is fixed by a plurality of circumferentially distributed abutting rods 32, which can effectively improve the stability of the pipe fitting during the welding process. After the pipe fitting is fixed, the pipe fitting can be fixed by a welding tool. During the welding process of the pipe fitting, the second motor 23 drives the second gear 22 to rotate. Through the meshing of the second gear 22 and the first gear 21, the fixed column 8 is driven to rotate. The fixed column 8 drives the pipe fitting to move in a circular motion, which facilitates the welding tool to perform comprehensive welding on the pipe fitting and effectively improves the welding efficiency of the pipe fitting. When the pipe fitting is welded, the first motor 6 drives the first threaded rod 5 to rotate in the reverse direction. The push rod 34 no longer presses the inclined surface of the wedge block 31. The wedge block 31 drives the abutting rod 32 to reset, thereby releasing the fixed state of the abutting rod 32 on the pipe fitting. And when the first motor 6 drives the first threaded rod 5 to rotate in the reverse direction, the third gear 412 simultaneously pushes the block 410 through the teeth. The block 410 pushes the turntable 48, so that the turntable 48 can drive the second threaded rod 47 to rotate. Through the threaded connection between the second threaded rod 47 and the threaded sleeve 46, the piston 43 is driven to move. While the piston 43 is moving, it squeezes the coolant inside the pressure cylinder 41, so that the coolant is discharged from the liquid outlet pipe 42 and drips on the surface of the pipe fitting. The welded pipe fitting is cooled by the coolant, which can effectively avoid the damage caused to the staff by the over-high temperature of the welded pipe fitting and plays a protective role for the staff.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding protection device for precision machining, comprising a frame; characterized in that, A positioning plate is fixed to the bottom of the frame. A fixing column penetrates through the positioning plate, and the fixing column is rotatably connected to the positioning plate. A rotating mechanism is provided on the positioning plate, and the rotating mechanism is used to drive the fixing column to rotate. A first motor is installed on one side wall of the frame, and a first threaded rod is installed at the output end of the first motor. The first threaded rod penetrates through the side wall of the frame and is rotatably connected to the side wall of the frame. The first threaded rod is connected to a clamping mechanism, and the clamping mechanism is used to clamp the pipe fitting. A fixing plate is fixed to the top of the frame, and the end of the first threaded rod is rotatably connected to the fixing plate. The fixing plate is connected to a cooling mechanism, and the cooling mechanism is used to cool the welded pipe fitting.

2. The welding protection device for precision machining according to claim 1, characterized in that, The rotating mechanism includes a first gear fixed to the outside of the fixing column. A second motor is installed on the positioning plate. The output end of the second motor penetrates through the positioning plate and is fixedly connected to a second gear, and the second gear meshes with the first gear.

3. A welding protection device for precision machining according to claim 1, characterized in that, The clamping mechanism includes a plurality of wedge blocks arranged in a circumferential distribution on the outside of the fixing column. A pressing rod is fixed to each wedge block, and the pressing rod penetrates through the side wall of the fixing column. A first elastic member is arranged outside the pressing rod, and both ends of the first elastic member are respectively connected to the wedge block and the outer wall of the fixing column. The first threaded rod is connected to a pressing component, and the pressing component is used to press the inclined surface of the wedge block.

4. A welding protection device for precision machining according to claim 3, characterized in that, The pressing component includes a moving block threadedly connected to the first threaded rod. A fixing rod is fixed to the end of the moving block. One end of the fixing rod is rotatably connected to a pressing column, and the end of the pressing column away from the fixing rod extends into the fixing column and is slidably connected to the inner wall of the fixing column. A plurality of pushing plates are fixedly arranged on the side wall of the pressing column in a circumferential distribution. Slide grooves are arranged on the side wall of the fixing column in a circumferential distribution and are adapted to the pushing plates. The pushing plates penetrate through the slide grooves and are slidably connected to the slide grooves. A push rod for pressing the inclined surface of the wedge block is fixedly arranged on the side wall of each pushing plate.

5. A welding protection device for precision machining according to claim 1, wherein, The cooling mechanism includes a pressure cylinder fixedly connected to the fixing plate. A piston is slidably connected inside the pressure cylinder. The piston is connected to a driving component, and the driving component is used to drive the piston to move inside the pressure cylinder. The pressure cylinder is communicated with a liquid outlet pipe.

6. The welding protection device for precision machining according to claim 5, characterized in that, The driving component includes a threaded sleeve fixedly connected to the piston. A second threaded rod is threadedly connected to the end of the threaded sleeve away from the piston. The second threaded rod penetrates through the end of the pressure cylinder and is rotatably connected to the end of the pressure cylinder. The second threaded rod is connected to a rotating component, and the rotating component is used to drive the second threaded rod to rotate. Symmetrically distributed sliders are fixed to the side wall of the threaded sleeve. Slide grooves adapted to the sliders are arranged on the inner wall of the pressure cylinder. The sliders are located inside the slide grooves and are slidably connected to the slide grooves.

7. The welding protection device for precision machining according to claim 6, characterized in that, The rotating component includes a turntable fixed to the end of the second threaded rod. A plurality of grooves are arranged on the side wall of the turntable in a circumferential distribution. A blocking block is rotatably connected inside each groove, and the blocking block extends outside the groove. One side of the blocking block is connected to the inner wall of the groove through a second elastic member, and the other side of the blocking block abuts against the inner wall of the groove. A third gear capable of pushing the blocking block is fixed to the outside of the first threaded rod.

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