Stainless steel pipe fitting welding device with limiting structure

Abstract

The invention belongs to the technical field of pipe fitting welding, and particularly relates to a stainless steel pipe fitting welding device with a limiting structure, the stainless steel pipe fitting welding device comprises a workbench, a pipe fitting carrying seat, a pipe fitting clamp, a jacking support and a dust collector, a notch is formed in the top of the workbench, and the pipe fitting carrying seat is movably mounted in the notch; and two pipe fitting clamps which are symmetrically arranged left and right are movably mounted at the top of the pipe fitting carrying seat. According to the pipe fitting welding device, the working motor is started to drive the driving rotating shaft to rotate, namely, the linkage gear rotates, and due to the fact that the linkage gear is meshed with the walking rack, the walking rack drives the pipe fitting carrying base to move and the limiting key to slide in the sliding groove till the next welding position moves to the position below the external welding device, so that welding of the next round is achieved; in the welding process, the pawl clamps the outer ratchet wheel, so that the driving rotating shaft can only move in a single direction, the pipe fitting carrying seat is prevented from moving back, and a worker is warned to operate in a correct direction.

Description

Technical Field

[0001] The present invention relates to a welding device for stainless steel pipe fittings, and more particularly to a welding device for stainless steel pipe fittings with a limiting structure. Background Art

[0002] Stainless steel pipes are hollow long round steel materials, mainly widely used in industrial conveying pipelines such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments, etc., as well as mechanical structure components. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. With the rapid development of high-quality strip continuous rolling production and the progress of welding and inspection technologies, the weld quality has been continuously improved, the variety specifications of welded pipes have increased day by day, and seamless pipes have been replaced in more and more fields.

[0003] For example, the patent publication number is CN213470162U, which discloses a welding device for processing stainless steel pipe fittings. Although two pipe fittings are clamped and fixed by two sets of support frames, and then the welding head is driven to move down by the telescopic rod to weld the pipe fittings, while the rotating gear is used to drive the rotating sleeve to rotate to ensure that the pipe fittings can rotate automatically during welding, the welding speed of the pipe fittings is improved. At the same time, the pipe fitting clamping assembly moves with the pipe fittings and does not need to be disassembled again, avoiding the misalignment of the welded pipe fittings and improving the welding accuracy of the pipe fittings.

[0004] However, during use, the pipeline is clamped and fixed by the limiting spring and the support frame. Since the spring has a certain elasticity, when the pipeline is heavy, the pipeline can squeeze the limiting spring, easily causing the deformation of the limiting spring, resulting in poor fixing effect of the pipeline and easy deviation of the pipeline, affecting the welding effect; and the dust cannot be treated during welding, resulting in unsatisfactory use effect. Summary of the Invention

[0005] The main purpose of the present disclosure is to provide a welding device for stainless steel pipe fittings with a limiting structure to effectively solve the problems raised by the inventor in the above background art.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A welding device for stainless steel pipe fittings with a limiting structure includes a workbench, a pipe fitting carrier, pipe fitting clamps, a lifting support, and a vacuum cleaner. A notch is formed at the top of the workbench, and a pipe fitting carrier is movably installed in the notch. Two pipe fitting clamps symmetrically arranged left and right are movably installed at the top of the pipe fitting carrier, and the moving directions of the two pipe fitting clamps are opposite. The two pipe fitting clamps are used to fix stainless steel pipe fittings. Lifting supports are fixedly connected to both sides of the workbench, and a device installation mechanism is provided at the upper end of the lifting support. The device installation mechanism is located above the pipe fitting clamps, and the vacuum cleaner is installed on the lifting support.

[0008] Preferably, the device mounting mechanism includes a top plate, an electric telescopic rod, and a welding equipment mounting plate. The top plate is fixedly mounted at the top of the lifting bracket. The electric telescopic rod is fixedly mounted on the top plate. The output end of the electric telescopic rod faces downward and is fixedly connected to the welding equipment mounting plate, and the welding equipment mounting plate is used for mounting an external welding device.

[0009] Preferably, instrument racks are fixedly mounted on both sides of the top of the pipe fitting carrier, and electric push rods are fixedly mounted on the instrument racks. The output ends of the electric push rods are fixedly connected to force-bearing brackets. Two pipe fitting clamps are respectively fixedly mounted on one side of the two force-bearing brackets close to each other, and the pipe fitting clamps are of an arc-shaped clamping plate structure.

[0010] Preferably, a chute is provided on the side wall of the notch. A limit key is fixedly connected to the side of the pipe fitting carrier, and the limit key is slidably mounted in the chute.

[0011] Preferably, a driving rotating shaft located below the pipe fitting carrier is rotatably mounted in the notch, and a linkage gear is fixedly mounted on the driving rotating shaft. A traveling gear is embedded at the bottom of the pipe fitting carrier, and the traveling gear meshes with the linkage gear. A working motor is fixedly mounted on the right side of the workbench, and the output end of the working motor is fixedly connected to the right end of the driving rotating shaft. The other end of the driving rotating shaft extends outside the workbench and is fixedly connected to an external ratchet. A locking position assembly is provided on the left side of the workbench and is matched with the external ratchet.

[0012] Preferably, the locking position assembly includes a torsion spring seat, a swing shaft, a torsion spring, and a pawl. The torsion spring seat is fixedly mounted on the left side of the workbench, and a swing shaft is rotatably mounted on the torsion spring seat. A pawl is fixedly mounted on the swing shaft, and the pawl is stuck on the external ratchet. A torsion spring is provided between the torsion spring seat and the pawl.

[0013] Preferably, an extension frame is fixedly connected to the lifting bracket, and a dust collector is fixedly mounted on the extension frame. An air inlet pipe is fixedly mounted at the air inlet of the dust collector, and the right end of the air inlet pipe is fixedly connected to a sealing cylinder. A flared opening is fixedly connected to the right side of the sealing cylinder. A dust storage cloth bag is fixedly connected to the air outlet of the dust collector.

[0014] Preferably, a guide plate is fixedly mounted on the outer shell of the dust collector, and a Z-axis rod is slidably penetrated through the guide plate. A force-bearing round block is fixedly connected to the top end of the Z-axis rod. A double piston is slidably and sealingly mounted in the sealing cylinder. The bottom end of the Z-axis rod is slidably and sealingly penetrated through the top of the sealing cylinder and is fixedly connected to the double piston. The lower piston of the double piston is located between the air inlet pipe and the flared opening. A return spring is fixedly connected to the Z-axis rod, and the other end of the return spring is fixedly connected to the sealing cylinder. A pressing head is fixedly connected to the bottom of the welding equipment mounting plate, and the pressing head is located above the force-bearing round block.

[0015] Preferably, a positioning airbag is fixedly installed on the inner wall of the pipe fitting clamp.

[0016] In view of this, compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1). In this application, initially, the two pipe fitting clamps are in a separated state. Place the stainless steel pipe fitting to be welded between the two pipe fitting clamps. When the electric push rod works, the electric push rod will push the stressed bracket, so that the pipe fitting clamp can be pushed, that is, the two pipe fitting clamps move towards each other, fixing the stainless steel pipe fitting under the welding equipment mounting plate. The positioning airbag can be inflated to make the fitting effect between the pipe fitting clamp and the stainless steel pipe fitting better, strengthening the stability of the fixed stainless steel pipe fitting and having better adaptability, laying a foundation for improving the quality of subsequent welding processing.

[0018] (2). In this application, when the working motor is started, it drives the driving rotating shaft to rotate, that is, the linkage gear rotates. Since the linkage gear meshes with the walking rack, the walking rack drives the pipe fitting carrier to move, and the limiting key slides in the chute until the next welding position moves under the external welding device to achieve the next round of welding. During the welding process, the pawl positions the external ratchet, so that the driving rotating shaft can only move in a single direction, preventing the pipe fitting carrier from moving back, to warn the staff to operate in the correct direction.

[0019] (3). In this application, when welding, the electric telescopic rod is started and drives the welding equipment mounting plate to move downward, then the welding device on it moves downward and works. During the downward movement of the welding equipment mounting plate, the pressing block moves downward and presses the stressed round block, so that the Z-axis rod drives the double piston to move downward until the lower piston of the double piston moves away from between the air inlet pipe and the flared opening, forming a passage among the air inlet pipe, the sealing cylinder and the flared opening. The dust collector works to remove the welding-generated dust, improving the quality of the working environment and preventing dust from falling at the welding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure shows a schematic structural diagram of a stainless steel pipe fitting welding device with a limiting structure provided by the present invention;

[0021] Figure 2 As shown in Figure 1 the structural diagram of the first part in

[0022] Figure 3 As shown in Figure 1 the structural diagram of the second part in

[0023] Figure 4 As shown in Figure 3 the partial structural diagram in

[0024] Figure 5 Shown is a schematic internal structure diagram of a sealing cylinder;

[0025] Figure 6 Shown is Figure 5 a schematic diagram after the double pistons in

[0026] Figure 7 Shown is a three-dimensional view of a pipe fitting carrier;

[0027] Figure 8 Shown is a side view of the connection between an external ratchet and a pawl.

[0028] Icon:

[0029] 1 - Workbench; 101 - Driving rotating shaft; 102 - Linkage gear; 103 - Traveling rack; 104 - Working motor; 105 - External ratchet;

[0030] 2 - Pipe fitting carrier; 201 - Limit key; 202 - Instrument rack; 203 - Electric push rod; 204 - Force-bearing bracket;

[0031] 3 - Pipe fitting clamp; 301 - Positioning airbag;

[0032] 4 - Lifting support; 401 - Top plate; 402 - Electric telescopic rod; 403 - Welding equipment mounting plate; 404 - Pressing head;

[0033] 5 - Vacuum cleaner; 501 - Dust storage cloth bag; 502 - Intake pipe; 503 - Flared opening; 504 - Sealing cylinder; 505 - Guide plate; 506 - Z-axis rod; 507 - Double pistons; 508 - Return spring; 509 - Force-bearing round block;

[0034] 6 - Lock position assembly; 601 - Torsion spring seat; 602 - Pawl. Specific implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-8 , the present invention provides the following embodiments:

[0037] A stainless steel pipe fitting welding device with a limit structure, comprising a workbench 1, a pipe fitting carrier 2, pipe fitting clamps 3, a lifting support 4 and a vacuum cleaner 5. A notch is formed at the top of the workbench 1, and a pipe fitting carrier 2 is movably installed in the notch. Two pipe fitting clamps 3 which are symmetrically arranged left and right are movably installed at the top of the pipe fitting carrier 2, and the moving directions of the two pipe fitting clamps 3 are opposite. The two pipe fitting clamps 3 are used to fix stainless steel pipe fittings. Lifting supports 4 are fixedly connected to both sides of the workbench 1, and a device installation mechanism is arranged at the upper end of the lifting support 4. The device installation mechanism is located above the pipe fitting clamps 3. The vacuum cleaner 5 is installed on the lifting support 4.

[0038] Specifically, the device installation mechanism includes a top plate 401, an electric telescopic rod 402, and a welding equipment installation plate 403. The top plate 401 is fixedly installed at the top end of the lifting support 4. The electric telescopic rod 402 is fixedly installed on the top plate 401. The output end of the electric telescopic rod 402 faces downward and is fixedly connected to the welding equipment installation plate 403. The welding equipment installation plate 403 is used to install an external welding device. The external welding device can be installed on the welding equipment installation plate 403 through screws. The external welding device is used for the welding task of stainless steel pipe fittings. The external welding device is not shown in the figure.

[0039] Specifically, instrument racks 202 are fixedly installed on both sides of the top of the pipe fitting carrier 2, and electric push rods 203 are fixedly installed on the instrument racks 202. The output end of the electric push rod 203 is fixedly connected to a force-bearing bracket 204. The two pipe fitting clamps 3 are respectively fixedly installed on one side of the two force-bearing brackets 204 close to each other. The pipe fitting clamps 3 are of an arc-shaped clamping plate structure, and positioning air bags 301 are fixedly installed on the inner walls of the pipe fitting clamps 3.

[0040] Specifically, a chute is formed on the side wall of the notch. A limit key 201 is fixedly connected to the side of the pipe fitting carrier 2, and the limit key 201 is slidably installed in the chute. A driving rotating shaft 101 located below the pipe fitting carrier 2 is rotatably installed in the notch, and a linkage gear 102 is fixedly installed on the driving rotating shaft 101. A traveling gear 103 is embedded at the bottom of the pipe fitting carrier 2, and the traveling gear 103 meshes with the linkage gear 102. A working motor 104 is fixedly installed on the right side of the workbench 1, and the output end of the working motor 104 is fixedly connected to the right end of the driving rotating shaft 101. The other end of the driving rotating shaft 101 extends outside the workbench 1 and is fixedly connected to an external ratchet 105. A lock position assembly 6 which cooperates with the external ratchet 105 is arranged on the left side of the workbench 1.

[0041] Specifically, the lock position assembly 6 includes a torsion spring seat 601, a swing shaft, a torsion spring, and a pawl 602. The torsion spring seat 601 is fixedly installed on the left side of the workbench 1. A swing shaft is rotatably installed on the torsion spring seat 601. A pawl 602 is fixedly installed on the swing shaft, and the pawl 602 is engaged with the outer ratchet wheel 105. A torsion spring is provided between the torsion spring seat 601 and the pawl 602.

[0042] Specifically, an extension frame is fixedly connected to the lifting support 4, and the vacuum cleaner 5 is fixedly installed on the extension frame. An air inlet pipe 502 is fixedly installed at the air inlet of the vacuum cleaner 5. The right end of the air inlet pipe 502 is fixedly connected to a sealing cylinder 504. A flared opening 503 is fixedly connected to the right side of the sealing cylinder 504. A dust storage bag 501 is fixedly connected to the air outlet of the vacuum cleaner 5. An extension frame is fixedly connected to the lifting support 4, and the vacuum cleaner 5 is fixedly installed on the extension frame. An air inlet pipe 502 is fixedly installed at the air inlet of the vacuum cleaner 5. The right end of the air inlet pipe 502 is fixedly connected to a sealing cylinder 504. A flared opening 503 is fixedly connected to the right side of the sealing cylinder 504. A dust storage bag 501 is fixedly connected to the air outlet of the vacuum cleaner 5.

[0043] The specific implementation of this embodiment is as follows: Initially, the two pipe clamps 3 are in a separated state. The stainless steel pipe to be welded is placed between the two pipe clamps 3. When the electric push rod 203 works, the electric push rod 203 will push the force-bearing bracket 204, so that the pipe clamp 3 can be pushed, that is, the two pipe clamps 3 move towards each other, fixing the stainless steel pipe under the welding equipment mounting plate 403. The positioning airbag 301 can be inflated to make the fitting effect between the pipe clamp 3 and the stainless steel pipe better, strengthening the stability of the fixed stainless steel pipe and having better adaptability, laying a foundation for improving the quality of subsequent welding processing.

[0044] The working motor 104 is started to drive the driving rotating shaft 101 to rotate, that is, the linkage gear 102 rotates. Since the linkage gear 102 meshes with the walking rack 103, the walking rack 103 drives the pipe carrier 2 to move. The limit key 201 slides in the chute until the next welding position moves under the external welding device to achieve the next round of welding. During the welding process, the pawl 602 positions the outer ratchet wheel 105, so that the driving rotating shaft 101 can only move in a single direction, preventing the pipe carrier 2 from moving back, to warn the staff to operate in the correct direction.

[0045] When welding, the electric telescopic rod 402 starts and drives the welding equipment mounting plate 403 to move downward. Then the welding device thereon moves downward and works. During the downward movement of the welding equipment mounting plate 403, the pressing block 404 moves downward and presses the force-receiving round block 509, causing the Z-axis rod 506 to drive the double piston 507 to move downward. The return spring 508 is compressed until the lower piston of the double piston 507 moves away from between the intake pipe 502 and the flared opening 503, enabling the intake pipe 502, the sealing cylinder 504, and the flared opening 503 to form a passage. The vacuum cleaner 5 operates, enabling the welding-generated dust to be removed, improving the quality of the working environment, and preventing dust from falling at the welding position.

[0046] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not elaborate on all the details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A stainless steel pipe fitting welding device with a limit structure, characterized in that: It includes a workbench (1), a pipe fitting carrier (2), pipe fitting clamps (3), a jacking support (4) and a vacuum cleaner (5). A notch is formed at the top of the workbench (1), and the pipe fitting carrier (2) is movably installed in the notch. Two pipe fitting clamps (3) which are symmetrically arranged left and right are movably installed at the top of the pipe fitting carrier (2), and the moving directions of the two pipe fitting clamps (3) are opposite. The two pipe fitting clamps (3) are used to fix stainless steel pipe fittings. Lifting supports (4) are fixedly connected to both sides of the workbench (1), and a device installation mechanism is arranged at the upper end of the lifting support (4). The device installation mechanism is located above the pipe fitting clamps (3). The vacuum cleaner (5) is installed on the lifting support (4).

2. The stainless steel pipe fitting welding device with a limit structure according to claim 1, characterized in that: The device installation mechanism includes a top plate (401), an electric telescopic rod (402) and a welding equipment installation plate (403). The top plate (401) is fixedly installed at the top end of the lifting support (4). The electric telescopic rod (402) is fixedly installed on the top plate (401). The output end of the electric telescopic rod (402) faces downward and is fixedly connected to the welding equipment installation plate (403), and the welding equipment installation plate (403) is used to install an external welding device.

3. The welding device for stainless steel pipe fittings with a limiting structure according to claim 2, characterized in that: Instrument racks (202) are fixedly installed on both sides of the top of the pipe fitting carrier (2), and electric push rods (203) are fixedly installed on the instrument racks (202). The output end of the electric push rod (203) is fixedly connected to a force-bearing bracket (204). The two pipe fitting clamps (3) are respectively fixedly installed on one side of the two force-bearing brackets (204) close to each other, and the pipe fitting clamps (3) are of an arc-shaped clamping plate structure.

4. A stainless steel pipe fitting welding device with a limit structure according to claim 3, characterized in that: Sliding grooves are formed in the side walls of the notch, a limiting key (201) is fixedly connected to the side surface of the pipe fitting carrier (2), and the limiting key (201) is slidably installed in the sliding grooves.

5. The welding device for stainless steel pipe fittings with a limiting structure according to claim 4, characterized in that: A driving rotating shaft (101) located below the pipe fitting carrier (2) is rotatably installed in the notch, a linkage gear (102) is fixedly installed on the driving rotating shaft (101), a traveling gear (103) is embedded at the bottom of the pipe fitting carrier (2), and the traveling gear (103) meshes with the linkage gear (102). A working motor (104) is fixedly installed on the right side of the workbench (1), and the output end of the working motor (104) is fixedly connected to the right end of the driving rotating shaft (101). The other end of the driving rotating shaft (101) extends outside the workbench (1) and is fixedly connected to an external ratchet wheel (105). A locking position assembly (6) which is matched with the external ratchet wheel (105) is arranged on the left side of the workbench (1).

6. The welding device for stainless steel pipe fittings with a limit structure according to claim 5, characterized in that: The locking position assembly (6) includes a torsion spring seat (601), a swing shaft, a torsion spring and a pawl (602). The torsion spring seat (601) is fixedly installed on the left side of the workbench (1), and the swing shaft is rotatably installed on the torsion spring seat (601). The pawl (602) is fixedly installed on the swing shaft, and the pawl (602) is stuck on the external ratchet wheel (105). A torsion spring is arranged between the torsion spring seat (601) and the pawl (602).

7. The welding device for stainless steel pipe fittings with a limit structure according to claim 6, characterized in that: An extension frame is fixedly connected to the jacking support (4), and the vacuum cleaner (5) is fixedly installed on the extension frame. An air inlet pipe (502) is fixedly installed at the air inlet of the vacuum cleaner (5), and the right end of the air inlet pipe (502) is fixedly connected to a sealing cylinder (504). A flared opening (503) is fixedly connected to the right side of the sealing cylinder (504). A dust storage cloth bag (501) is fixedly connected to the air outlet of the vacuum cleaner (5).

8. A stainless steel pipe fitting welding device with a limit structure according to claim 7, characterized in that: A guide plate (505) is fixedly installed on the outer shell of the vacuum cleaner (5), and a Z-axis rod (506) is slidably installed through the guide plate (505). The top end of the Z-axis rod (506) is fixedly connected to a force-receiving round block (509). A double piston (507) is hermetically and slidably installed in the sealing cylinder (504). The bottom end of the Z-axis rod (506) hermetically slides through the top of the sealing cylinder (504) and is fixedly connected to the double piston (507). The lower piston of the double piston (507) is located between the air inlet pipe (502) and the flared opening (503). A return spring (508) is fixedly connected to the Z-axis rod (506), and the other end of the return spring (508) is fixedly connected to the sealing cylinder (504). A pressing head (404) is fixedly connected to the bottom of the welding equipment mounting plate (403), and the pressing head (404) is located above the force-receiving round block (509).

9. The welding device for stainless steel pipe fittings with a limit structure according to claim 3, characterized in that: A positioning airbag (301) is fixedly installed on the inner wall of the pipe fitting clamp (3).

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