Welding fixture for reducing elbow of stainless steel pipe fitting

Abstract

The invention relates to the technical field of welding fixtures, in particular to a welding fixture for a reducing elbow of a stainless steel pipe fitting, which comprises a right-angle welding seat, an elbow pipe and a connecting pipe fitting, the pneumatic chuck is used for fixing the connecting pipe fitting and is rotationally mounted on the inner side wall of the right-angle welding seat, and a first driving motor used for driving the pneumatic chuck to rotate is fixedly mounted on the outer side of the right-angle welding seat; the fixing assembly is used for enabling the end of the bent pipe to be in butt joint with the end of the connecting pipe fitting; the scrap collecting assembly is used for collecting dust and scraps on the surfaces of the bent pipe and the connecting pipe fitting; and a positioning assembly. By means of the pneumatic chuck and the fixing frame capable of being opened at each angle, different-diameter elbows of different sizes can be clamped and fixed, meanwhile, under the action of the suction pump and the scrap collecting basin, dust and impurities on the surfaces of the different-diameter elbows can be cleaned and collected, and therefore the welding effect of the elbows and connecting pipe fittings is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding fixtures, in particular to a welding fixture used for reducing elbows of stainless steel pipe fittings. Background Art

[0002] Reducers are also called reducers, which are one of the chemical pipe fittings used to connect two pipes of different diameters. They are divided into concentric reducers and eccentric reducers. Welding, also known as fusion welding, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics.

[0003] The existing reducing elbow welding fixture is difficult to stably clamp and lock reducing elbows of different pipe diameters, which causes the reducing elbow to easily shift during welding, resulting in deviations during welding, affecting the accuracy of reducing elbow welding, and has poor applicability. At the same time, it is difficult to align the pipes to be welded before welding, resulting in errors in the pipes after welding, which greatly increases the frequency of defective products and reduces welding efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a welding fixture for a stainless steel pipe reducing elbow.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A welding fixture for a stainless steel pipe reducing elbow, comprising:

[0007] Right-angle welding sockets, elbows and connecting pipe fittings;

[0008] A pneumatic chuck is used to fix the connecting pipe and is rotatably mounted on the inner side wall of the right-angle welding seat, and a first driving motor for driving the pneumatic chuck to rotate is fixedly mounted on the outer side of the right-angle welding seat;

[0009] A fixing assembly, used for butting the end of the elbow with the end of the connecting pipe;

[0010] A chip collecting assembly, used for collecting dust and waste chips on the surfaces of the elbow and the connecting pipe fittings;

[0011] The positioning assembly is used to press the elbow against the end of the connecting pipe.

[0012] Preferably, the fixing assembly includes a fixing tube fixedly mounted on the axis of the pneumatic chuck, three rotating shafts are rotatably mounted in the fixing tube, and the three rotating shafts are arranged in a circular array, a gear is fixedly mounted on the outer wall of each rotating shaft, and the gear movably passes through the surface of the fixing tube, a fixing frame is fixedly mounted on the side of each gear, a gear rod is meshed together between the three gears, a fixing plate is fixedly mounted in the fixing tube, and an electric push rod for driving the gear rod is fixedly mounted on the outer side of the fixing plate.

[0013] Preferably, the chip collection assembly includes a suction pump fixedly mounted on the outer wall of the right-angle welding seat, the output port of the suction pump is fixedly connected to a blast pipe, the other end of the blast pipe is fixedly connected to a nozzle, the input port of the suction pump is fixedly connected to an air suction pipe, the other end of the air suction pipe is fixedly passed through the outer side of the right-angle welding seat and is fixedly connected to a chip collecting basin, the inner surface of the chip collecting basin is slidably fitted with a filter plate, the top of the filter plate is symmetrically fixedly mounted with two right-angle handles, and the inner tops of the two right-angle handles are in contact with the top of the chip collecting basin.

[0014] Preferably, the positioning assembly includes a screw rod rotatably mounted on the inner wall of the right-angle welding seat, a second drive motor for driving the screw rod to rotate is fixedly mounted on the outer side of the right-angle welding seat, a positioning plate is threadedly connected to the surface of the screw rod, and the bottom of the positioning plate is slidably fitted on the surface of the right-angle welding seat, and a positioning plate is rotatably mounted on the side of the positioning plate close to the fixed tube.

[0015] Preferably, three through holes are formed on the surface of the fixing tube, and the three through holes are slidably connected to the corresponding gears and the fixing frame respectively.

[0016] Preferably, a rubber sleeve is fixedly mounted on one end of each fixing frame away from the corresponding gear.

[0017] Preferably, two support frames are symmetrically fixedly mounted on the bottom of the chip collecting basin, and the other ends of the two support frames are fixedly mounted on the surface of the right-angle welding seat.

[0018] Preferably, a fixing block is rotatably mounted on one end of the screw rod away from the second drive motor, and the fixing block is fixedly mounted on the surface of the right-angle welding seat.

[0019] Preferably, a cooler is installed in the middle of the blast pipe.

[0020] Compared with the prior art, the welding fixture for the reducing elbow of a stainless steel pipe provided by the present invention has the following advantages:

[0021] 1. The pneumatic chuck can be used to fix the connecting pipes of different sizes. Then the electric push rod pushes the gear rod to move away from the connecting pipe, driving each meshing gear to rotate counterclockwise, so that each fixing frame opens outward until each rubber sleeve is pressed against the inner wall of the elbow, thus fixing the elbows of different sizes.

[0022] 2. Use a suction pump to blow air through the blast pipe and the nozzle onto the surface of the elbow and connecting pipe fittings, so that the dust and impurities on the surface can be blown off. At this time, under the action of the suction pipe, the fallen dust and impurities can also be adsorbed in the chip collecting basin, thereby achieving the effect of cleaning the surface of the elbow and connecting pipe fittings, ensuring the welding effect of the elbow and connecting pipe fittings;

[0023] 3. The second drive motor controls the screw rod to rotate, so that the positioning plate moves toward the direction of the bent pipe until the positioning plate is pressed against the bent pipe, thereby ensuring that its end is firmly connected to the end of the connecting pipe and also supporting the bent pipe;

[0024] The present invention can clamp and fix different-sized reducing elbows through a pneumatic chuck and a fixing frame that can be opened at each angle. At the same time, under the action of a suction pump and a chip collecting basin, dust and impurities on the surface of the reducing elbow can be cleaned and collected, thereby ensuring the welding effect of the elbow and the connecting pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a welding fixture for a stainless steel pipe reducing elbow proposed by the present invention when no elbow or connecting pipe is placed;

[0026] Figure 2 This is a structural schematic diagram of a welding fixture for a stainless steel pipe reducing elbow proposed by the present invention;

[0027] Figure 3 This is a schematic structural diagram of a fixing assembly in a welding fixture for a stainless steel pipe reducing elbow proposed by the present invention;

[0028] Figure 4 for Figure 1 A is an enlarged view of the structure;

[0029] Figure 5 This is a schematic structural diagram of the connection between the filter plate and the right-angle handle in a welding fixture for a stainless steel pipe reducing elbow proposed by the present invention;

[0030] Figure 6 It is a schematic diagram of the exploded structure of the elbow and the connecting pipe in a welding fixture for a stainless steel pipe reducing elbow proposed by the present invention;

[0031] In the figure: 1 right-angle welding seat, 2 pneumatic chuck, 3 first drive motor, 4 fixed pipe, 5 rotating shaft, 6 gear, 7 fixed frame, 8 gear rod, 9 fixed plate, 10 electric push rod, 11 through hole, 12 suction pump, 13 blast pipe, 14 nozzle, 15 suction pipe, 16 chip collecting basin, 17 support frame, 18 filter plate, 19 second drive motor, 20 screw rod, 21 positioning plate, 22 positioning plate, 23 fixed block, 24 right-angle handle, 25 cooler, 26 rubber sleeve, 27 elbow, 28 connecting pipe fittings. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figures 1 to 6 , a welding fixture for a stainless steel pipe reducing elbow, comprising:

[0034] A right-angle welding seat 1, a bent pipe 27 and a connecting pipe 28; a pneumatic chuck 2, which is used to fix the connecting pipe 28 and is rotatably installed on the inner wall of the right-angle welding seat 1, and a first driving motor 3 for driving the pneumatic chuck 2 to rotate is fixedly installed on the outer side of the right-angle welding seat 1. When in use, first put the end of the connecting pipe 28 on the fixed pipe 4 and press it against the surface of the pneumatic chuck 2, and then start the pneumatic chuck 2, so that the connecting pipe 28 can be fixed on the surface of the pneumatic chuck 2, thereby realizing the fixation of connecting pipes 28 of different sizes.

[0035] A fixing assembly is used to connect the end of the curved pipe 27 with the end of the connecting pipe 28. The fixing assembly includes a fixing pipe 4 fixedly installed on the axis of the pneumatic chuck 2. Three rotating shafts 5 are rotatably installed in the fixing pipe 4, and the three rotating shafts 5 are arranged in a circular array. A gear 6 is fixedly installed on the outer wall of each rotating shaft 5, and the gear 6 movably passes through the surface of the fixing pipe 4. A fixing frame 7 is fixedly installed on the side of each gear 6. Three through holes 11 are opened on the surface of the fixing pipe 4, and the three through holes 11 are respectively slidably connected with the corresponding gear 6 and the fixing frame 7 to provide rotation space for each gear 6 and the fixing frame 7. A rubber sleeve 26 is fixedly installed on the end of each fixing frame 7 away from the corresponding gear 6, which can increase the friction between the fixing frame 7 and the inner side of the curved pipe 27 when they contact.

[0036] A gear rod 8 is meshed between the three gears 6, a fixing plate 9 is fixedly installed in the fixing tube 4, and an electric push rod 10 for driving the gear rod 8 is fixedly installed on the outer side of the fixing plate 9. After the connecting pipe 28 is fixed on the pneumatic chuck 2, the bent pipe 27 is sleeved on the fixing tube 4 and pressed against the end of the connecting pipe 28, and then the electric push rod 10 is started to push the gear rod 8 to move away from the connecting pipe 28. At this time, the gear rod 8 can drive each meshing gear 6 to rotate counterclockwise, so that each fixing frame 7 opens outward until each rubber sleeve 26 presses against the inner wall of the bent pipe 27, so that the bent pipes 27 of different sizes can be fixed.

[0037] The chip collecting assembly is used to collect dust and waste chips on the surface of the elbow 27 and the connecting pipe 28. The chip collecting assembly includes a suction pump 12 fixedly installed on the outer wall of the right-angle welding seat 1. The output port of the suction pump 12 is fixedly connected to the blast pipe 13. A cooler 25 is installed in the middle of the blast pipe 13. When blowing, the airflow blown out of the blast pipe 13 is converted into a cold airflow, thereby enabling rapid cooling of the welding points of the elbow 27 and the connecting pipe 28.

[0038] The other end of the blast pipe 13 is fixedly connected to a nozzle 14, and the input port of the suction pump 12 is fixedly connected to an air suction pipe 15. The other end of the air suction pipe 15 is fixedly passed through the outer side of the right-angle welding seat 1 and is fixedly connected to a chip collecting basin 16. Two support frames 17 are symmetrically fixedly installed on the bottom of the chip collecting basin 16, and the other ends of the two support frames 17 are fixedly installed on the surface of the right-angle welding seat 1, thereby increasing the stability of the bottom of the chip collecting basin 16. During welding, the suction pump 12 can be started to blow on the surface of the elbow 27 and the connecting pipe fitting 28 through the blast pipe 13 and the nozzle 14, so that the dust and impurities on the surface can be blown off. At this time, under the action of the air suction pipe 15, the fallen dust and impurities can also be adsorbed in the chip collecting basin 16, thereby achieving the effect of cleaning the surface of the elbow 27 and the connecting pipe fitting 28, thereby ensuring the welding effect of the elbow 27 and the connecting pipe fitting 28.

[0039] A filter plate 18 is slidably fitted on the inner surface of the chip collecting basin 16, and two right-angle handles 24 are symmetrically fixedly installed on the top of the filter plate 18, and the inner tops of the two right-angle handles 24 are in contact with the top of the chip collecting basin 16. The dust entering the chip collecting basin 16 can be filtered by the filter plate 18 and intercepted on its surface. Finally, when cleaning, it can be taken out through the two right-angle handles 24.

[0040] The positioning assembly is used to press the bent pipe 27 against the end of the connecting pipe 28. The positioning assembly includes a screw rod 20 rotatably mounted on the inner wall of the right-angle welding seat 1. A fixed block 23 is rotatably mounted on the end of the screw rod 20 away from the second drive motor 19, and the fixed block 23 is fixedly mounted on the surface of the right-angle welding seat 1, thereby ensuring the stability of the screw rod 20 during rotation.

[0041] A second drive motor 19 for driving the screw rod 20 to rotate is fixedly installed on the outer side of the right-angle welding seat 1. A positioning plate 21 is threadedly connected to the surface of the screw rod 20, and the bottom of the positioning plate 21 slides and fits on the surface of the right-angle welding seat 1. A positioning disk 22 is rotatably installed on the side of the positioning plate 21 close to the fixed tube 4. After the bent pipe 27 is fixed, the second drive motor 19 is started to control the rotation of the screw rod 20, so that the positioning plate 21 moves toward the direction of the bent pipe 27 until the positioning disk 22 is pressed against the bent pipe 27, thereby ensuring that its end is firmly connected to the end of the connecting pipe 28 while also supporting the bent pipe 27.

[0042] The working principle of the present invention is:

[0043] When in use, firstly put the end of the connecting pipe 28 on the fixing pipe 4 and press it against the surface of the pneumatic chuck 2, then start the pneumatic chuck 2, and then the connecting pipe 28 can be fixed on the surface of the pneumatic chuck 2;

[0044] Then, the bent pipe 27 is put on the fixed pipe 4 and pressed against the end of the connecting pipe 28, and then the electric push rod 10 is started to push the gear rod 8 to move away from the connecting pipe 28. At this time, the gear rod 8 can drive each meshing gear 6 to rotate counterclockwise, so that each fixing frame 7 opens outward until each rubber sleeve 26 presses against the inner wall of the bent pipe 27 to fix the bent pipe 27;

[0045] Then, the second drive motor 19 is started to control the screw rod 20 to rotate, so that the positioning plate 21 moves toward the direction of the elbow 27 until the positioning plate 22 is pressed against the elbow 27, and then the first drive motor 3 is started to drive the elbow 27 and the connecting pipe 28 to rotate synchronously. At this time, the ends of the elbow 27 and the connecting pipe 28 can be welded using an external welding gun;

[0046] Finally, if it is necessary to weld a pipe fitting with a different diameter at the other end of the elbow 27, first reset the pneumatic chuck 2, each fixing frame 7 and the positioning plate 22, remove the welded elbow 27 and the connecting pipe fitting 28, and then add another pipe fitting of a different size, repeat the above steps, and the welding of the different diameter elbow can be completed.

[0047] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding fixture for reducing elbows of stainless steel pipe fittings, characterized in that: include: A right-angle welding seat (1), a bent pipe (27) and a connecting pipe fitting (28); A pneumatic chuck (2) is used to fix the connecting pipe (28) and is rotatably mounted on the inner side wall of the right-angle welding seat (1); a first driving motor (3) for driving the pneumatic chuck (2) to rotate is fixedly mounted on the outer side of the right-angle welding seat (1); A fixing assembly, used for butting the end of the curved pipe (27) with the end of the connecting pipe (28); A chip collecting assembly, used for collecting dust and waste chips on the surface of the elbow (27) and the connecting pipe (28); The positioning assembly is used to press the curved pipe (27) against the end of the connecting pipe (28).

2. A welding fixture for reducing elbows of stainless steel pipe fittings according to claim 1, characterized in that: The fixing assembly comprises a fixing tube (4) fixedly mounted on the axis of the pneumatic chuck (2), three rotating shafts (5) are rotatably mounted in the fixing tube (4), and the three rotating shafts (5) are arranged in a circular array, a gear (6) is fixedly mounted on the outer wall of each rotating shaft (5), and the gear (6) movably penetrates the surface of the fixing tube (4), a fixing frame (7) is fixedly mounted on the side of each gear (6), a gear rod (8) is meshed between the three gears (6), a fixing plate (9) is fixedly mounted in the fixing tube (4), and an electric push rod (10) for driving the gear rod (8) is fixedly mounted on the outer side of the fixing plate (9).

3. A welding fixture for a stainless steel pipe reducing elbow according to claim 1, characterized in that: The chip collecting assembly comprises a suction pump (12) fixedly mounted on the outer wall of the right-angle welding seat (1); the output port of the suction pump (12) is fixedly connected to a blast pipe (13); the other end of the blast pipe (13) is fixedly connected to a nozzle (14); the input port of the suction pump (12) is fixedly connected to an air suction pipe (15); the other end of the air suction pipe (15) is fixedly passed through the outer side of the right-angle welding seat (1) and is fixedly connected to a chip collecting basin (16); the inner surface of the chip collecting basin (16) is slidably fitted with a filter plate (18); two right-angle handles (24) are symmetrically fixedly mounted on the top of the filter plate (18), and the inner tops of the two right-angle handles (24) are in contact with the top of the chip collecting basin (16).

4. A welding fixture for reducing elbows of stainless steel pipes according to claim 1, characterized in that: The positioning assembly comprises a screw rod (20) rotatably mounted on the inner wall of a right-angle welding seat (1); a second drive motor (19) for driving the screw rod (20) to rotate is fixedly mounted on the outer side of the right-angle welding seat (1); a positioning plate (21) is threadedly connected to the surface of the screw rod (20), and the bottom of the positioning plate (21) is slidably fitted on the surface of the right-angle welding seat (1); and a positioning disk (22) is rotatably mounted on the side of the positioning plate (21) close to the fixed tube (4).

5. A welding fixture for reducing elbows of stainless steel pipes according to claim 2, characterized in that: The surface of the fixed tube (4) is provided with three through holes (11), and the three through holes (11) are respectively slidably connected to the corresponding gears (6) and the fixed frame (7).

6. A welding fixture for a stainless steel pipe reducing elbow according to claim 2, characterized in that: A rubber sleeve (26) is fixedly mounted on one end of each fixing frame (7) away from the corresponding gear (6).

7. A welding fixture for a stainless steel pipe reducing elbow according to claim 3, characterized in that: Two support frames (17) are symmetrically fixedly mounted on the bottom of the chip collecting basin (16), and the other ends of the two support frames (17) are fixedly mounted on the surface of the right-angle welding seat (1).

8. A welding fixture for reducing elbows of stainless steel pipes according to claim 4, characterized in that: A fixing block (23) is rotatably mounted on one end of the screw rod (20) away from the second drive motor (19), and the fixing block (23) is fixedly mounted on the surface of the right-angle welding seat (1).

9. A welding fixture for reducing elbows of stainless steel pipes according to claim 3, characterized in that: A cooler (25) is installed in the middle of the blast pipe (13).

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