A welding device for adaptive variable diameter pipe bending parts

Abstract

The present invention provides an adaptive variable diameter elbow component welding device, which relates to the field of welding technology, and includes a mounting platform, a threaded rod is rotatably matched on the mounting platform, a horizontal platform is divided into a horizontal plate and a vertical direction, and the threaded side surface of the threaded rod is rotatably matched with the horizontal platform, and two elbows are arranged between the vertical direction of the mounting platform and the horizontal platform. Through the fixed connection of one end of the transmission chain with the lifting handle, the other end of the transmission chain with the L-shaped horizontal plate, the setting of several traction springs fixedly connected between the L-shaped horizontal plate and the horizontal platform, and the setting of a 45-degree angle between the traction frame and the horizontal platform, it is suitable for welding between two 45-degree elbows under the same bending curvature, and can adjust the welding surface of elbows with different bending radii. In addition, through the setting of the downward pressure spring fixedly connected between the pressing and toggling frame and the lower pressure plate, there is no need for another mechanism to fix the threaded rod circumferentially, which is convenient for manual adjustment of the welding surface of the device.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to an adaptive variable diameter elbow component welding device. Background Art

[0002] Welded pipe bend is also called welded elbow, which is a shrimp bend. The number of bends and the bending radius are determined by the maker. Commonly used 45-degree elbows and 90-degree elbows. The classification of pipe elbow welding can also be divided according to the bending radius of the pipe. The welding machine used in the welding process is a portable automatic pipe welding machine, which adopts electric welding and can weld the welding joints of two pipe elbows with the same bending radius.

[0003] Before welding two 45-degree elbows, the ends of the elbows need to be clamped first. The existing elbow welding device used for two elbows with the same bending curvature cannot adapt to the welding of elbows with different bending radii. It is difficult to adjust the welding surface between the two elbows and the welding center of the two elbows, which reduces the flatness of the welding surface. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an adaptive variable diameter elbow component welding device, which solves the problem that the existing elbow welding device used for two elbows with the same bending curvature cannot adapt to the welding of elbows with different bending radii, it is difficult to adjust the welding surface between the two elbows and the welding center of the two elbows, and the flatness of the welding surface is reduced.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: including a mounting platform, on which a threaded rod is rotatably engaged, the mounting platform is divided into horizontal and vertical directions, the threaded side surface of the threaded rod is rotatably engaged with a horizontal platform, and two bent pipes are arranged between the vertical direction of the mounting platform and the horizontal platform.

[0008] A threaded block rotatably matched with the thread of the threaded rod is fixed to one side of the horizontal platform, a first sprocket and a second sprocket are rotatably matched with one side of the horizontal platform, a third sprocket is rotatably matched with one side of the mounting platform in the vertical direction, a transmission chain is used for transmission between the first sprocket, the second sprocket and the third sprocket, and a lifting handle fixedly connected to one end of the transmission chain is fixed to the top of the horizontal platform close to the threaded block.

[0009] Two horizontal limit rods are fixed on the top of the horizontal platform, and a horizontal clamping mechanism is horizontally slidably cooperated with the top of the horizontal platform. Horizontal sliders that slide and cooperate with the horizontal limit rods are fixed at opposite ends of the horizontal clamping mechanism. An L-shaped horizontal plate is fixed to one side of the horizontal slider, and the L-shaped horizontal plate is fixedly connected to the other end of the transmission chain. A number of traction springs are fixedly connected between the side of the horizontal platform close to the threaded block and the L-shaped horizontal plate.

[0010] A central inclined plate is fixed on the top of the horizontal platform, a welding machine is slidably matched on one side of the central inclined plate, and a traction rod is fixed on one side of the welding machine.

[0011] A traction frame which is slidably matched with the traction rod is fixed on the top of the horizontal sliding block.

[0012] Preferably, two limit baffles are fixed to a side surface of the mounting platform in the vertical direction, and the threaded block slides up and down along the two limit baffles.

[0013] Preferably, two vertical limit rods are fixed to the top of the mounting platform in the horizontal direction, and both of the vertical limit rods are slidably matched with the horizontal platform up and down.

[0014] Preferably, a lower pressure plate is fixed on the top of the threaded rod vertically above the mounting platform, an insertion rod is slidably engaged on the top of the lower pressure plate, a toggle ball is fixed on the top of the insertion rod, and a plug spring is fixedly connected between the insertion rod and the bottom of the lower pressure plate.

[0015] A central rotating plate is fixed on the top of the lower pressure plate, and a toggle frame rotatably matched with the insertion rod is rotatably matched on the side of the central rotating plate. A downward pressure spring is fixed between the bottom of the toggle frame and the lower pressure plate, and the diameter of the toggle ball is larger than the inner diameter width of the toggle frame.

[0016] Preferably, a vertical clamping mechanism identical to the horizontal clamping mechanism is fixedly mounted on a side surface in the vertical direction of the mounting platform, and the horizontal clamping mechanism and the vertical clamping mechanism respectively clamp one end of the two curved pipes away from each other.

[0017] The horizontal clamping mechanism comprises a mounting base plate, and a T-shaped ring groove is formed on the top of the mounting base plate.

[0018] A rotating ring is rotatably matched with the top of the installation base plate, and a T-shaped rail that is slidably matched with the T-shaped ring groove is fixed at the bottom of the rotating ring.

[0019] Preferably, a slave gear ring is fixed on the side surface of the rotating ring, a micro motor is fixedly installed on the top of the mounting base plate, a main gear is fixedly connected to the output end of the micro motor, and the main gear and the slave gear ring are meshed with each other.

[0020] Preferably, a plurality of arc holes distributed in a circular array are provided on the top of the rotating ring, a plurality of L-shaped support plates are fixed on the top of the mounting base plate, a rectangular groove is penetrated through the top of the plurality of L-shaped support plates, a rectangular block is horizontally slidably fitted in the rectangular groove, a vertical rod is fixed on the bottom of the rectangular block, and a clamping plate is fixed on the top of the vertical rod.

[0021] (III) Beneficial effects

[0022] The present invention provides an adaptive variable diameter elbow component welding device, which has the following beneficial effects:

[0023] 1. In the present invention, the threaded rod is rotated to make the horizontal platform and the horizontal clamping mechanism on the horizontal platform move upward or downward as a whole. Because one end of the transmission chain is fixedly connected to the lifting handle, the other end of the transmission chain is fixedly connected to the L-shaped horizontal plate, and a plurality of traction springs are fixedly connected between the L-shaped horizontal plate and the horizontal platform, the tension provided by the traction spring drives the L-shaped horizontal plate to move horizontally to the left or right, wherein the distance the horizontal platform moves up or down is equal to the distance the horizontal clamping mechanism moves horizontally to the left or right. Due to the sliding cooperation between the traction frame and the traction rod and the setting of a 45-degree angle between the traction frame and the horizontal platform, the welding machine is driven to make an oblique movement close to the connection angle between the center oblique plate and the horizontal plate, and the bending radius clamped by the two bent pipes can be adjusted. The device is suitable for welding between two 45-degree bent pipes under the same bending curvature, and can adjust the welding surface of bent pipes with different bending radii, adjust the welding center between the two bent pipes, and ensure the flatness of the welding surface between the two bent pipes.

[0024] 2. In the present invention, by pressing one end of the toggle frame and the lower pressure plate, the downward pressure spring fixedly connected between the toggle frame and the lower pressure plate is compressed, so that the insertion rod is away from the plurality of plug-in slots opened on the top of the mounting table. Then the threaded rod can be rotated. After adjusting the welding surface, the pressure on the toggle frame and one end of the lower pressure plate is released, so that the downward pressure spring and the plug-in spring are restored to a natural state, so that the insertion rod is plugged into the plug-in slot. No additional mechanism is needed to circumferentially fix the threaded rod, which is convenient for manual adjustment of the welding surface of the device.

[0025] 3. In the present invention, through the meshing cooperation between the main gear and the slave gear ring, and the sliding cooperation between the arc hole and the vertical rod, the rectangular block and the clamping plate fixed on the top of the rectangular block are driven to slide towards or away from the center of the horizontal clamping mechanism, thereby clamping the outer surface of one end of the bent pipe and improving the stability of the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an adaptive variable diameter bending pipe component welding device of the present invention;

[0027] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0028] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0029] Figure 4 It is a structural schematic diagram of a horizontal platform, a horizontal clamping mechanism and a welding machine;

[0030] Figure 5 for Figure 4 The enlarged schematic diagram of the center C;

[0031] Figure 6 It is a structural schematic diagram of a horizontal clamping mechanism and a horizontal slider;

[0032] Figure 7 It is a structural schematic diagram of a horizontal clamping mechanism or a vertical clamping mechanism;

[0033] Figure 8 is a cross-sectional view of a horizontal clamping mechanism or a vertical clamping mechanism;

[0034] Fig. 9 for Figure 8 Enlarged schematic diagram of point D in the middle.

[0035] Among them, 1. mounting table; 2. horizontal platform; 3. elbow; 4. horizontal clamping mechanism; 5. horizontal slider; 6. welding machine; 7. vertical clamping mechanism; 101. threaded rod; 102. third sprocket; 103. transmission chain; 201. threaded block; 104. limit baffle; 105. lower pressure plate; 106. plug rod; 107. toggle ball; 108. plug spring; 109. center rotating plate; 110. toggle frame; 111. lower pressure spring; 202. first sprocket; 203. second sprocket; 204. lifting Handle; 205, horizontal limit rod; 206, center inclined plate; 207, vertical limit rod; 401, mounting base plate; 402, T-shaped ring groove; 403, rotating ring; 404, T-shaped rail; 405, slave gear ring; 406, micro motor; 407, main gear; 409, arc hole; 410, L-shaped support plate; 411, rectangular groove; 412, rectangular block; 413, vertical rod; 414, clamping plate; 501, L-shaped horizontal plate; 502, traction spring; 503, traction frame; 601, traction rod. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] like Figure 1-Figure 9 As shown, an embodiment of the present invention provides an adaptive variable diameter elbow component welding device, including a mounting platform 1, a threaded rod 101 is rotatably matched on the mounting platform 1, the mounting platform 1 is divided into a horizontal direction and a vertical direction, the threaded rod 101 is rotatably matched with a horizontal platform 2 around the side surface, and two elbows 3 are arranged between the mounting platform 1 and the horizontal platform 2 in the vertical direction; a threaded block 201 that is rotatably matched with the threaded rod 101 is fixed on one side of the horizontal platform 2, a first sprocket 202 and a second sprocket 203 are rotatably matched on one side of the horizontal platform 2, a third sprocket 102 is rotatably matched on one side of the vertical direction of the mounting platform 1, a transmission chain 103 is transmitted between the first sprocket 202, the second sprocket 203 and the third sprocket 102, and a transmission chain 103 is fixed on the top of the horizontal platform 2 near the threaded block 201. 3. A lifting handle 204 is fixedly connected at one end; two horizontal limit rods 205 are fixed on the top of the horizontal platform 2, and a horizontal clamping mechanism 4 is horizontally slidably matched at the top of the horizontal platform 2. Horizontal sliders 5 that slide and match with the horizontal limit rods 205 are fixed at opposite ends of the horizontal clamping mechanism 4. An L-shaped horizontal plate 501 is fixed on one side of the horizontal slider 5, and the L-shaped horizontal plate 501 is fixedly connected to the other end of the transmission chain 103. A plurality of traction springs 502 are fixedly connected between the side of the horizontal platform 2 close to the threaded block 201 and the L-shaped horizontal plate 501; a central inclined plate 206 is fixed on the top of the horizontal platform 2, and a welding machine 6 is slidably matched on one side of the central inclined plate 206, and a traction rod 601 is fixed on one side of the welding machine 6; a traction frame 503 that slides and matches with the traction rod 601 is fixed on the top of the horizontal slider 5.

[0039] Specifically, two limit baffles 104 are fixed to one side of the mounting platform 1 in the vertical direction, and the threaded block 201 slides up and down along the two limit baffles 104 to cooperate.

[0040] Furthermore, two vertical limit rods 207 are fixed to the top of the mounting platform 1 in the horizontal direction, and the two vertical limit rods 207 are slidably matched with the horizontal platform 2 up and down.

[0041] The operation process of this embodiment is as follows: in the initial state, a plurality of traction springs 502 fixedly connected between the L-shaped horizontal plate 501 and the horizontal platform 2 are stretched. Before the device is used, the welding machine 6 slidingly matched with one side of the central inclined plate 206 is clamped to the sides of the two elbows 3 (the welding machine used in the device is a prior art, a portable automatic pipeline welding machine, model MWF series closed pipe welding machine of Meihan, which can rotate to open the port of the welding machine and clamp the elbow in the welding machine, and then lock the port of the welding machine, and weld by electric welding). In the process of rotating the threaded rod 101 forward or reversely, the threaded block 201 rotatingly matched with the threaded rod 101 moves up or down along the threaded rod 101, so that the horizontal platform 2 and the horizontal clamping mechanism 4 on the horizontal platform 2 move up or down as a whole. In the process of the horizontal platform 2 moving up or down, one end of the transmission chain 103 is fixedly connected to the lifting handle 204, and the other end of the transmission chain 103 is fixedly connected to the L-shaped horizontal plate 501. And the setting of several traction springs 502 fixedly connected between the L-shaped horizontal plate 501 and the horizontal platform 2, so that the pulling force provided by the traction spring 502 drives the L-shaped horizontal plate 501 to move horizontally to the left or right, wherein the distance that the horizontal platform 2 moves up or down is equal to the distance that the horizontal clamping mechanism 4 moves horizontally to the left or right. When the L-shaped horizontal plate 501 slides horizontally to the left, due to the sliding cooperation between the traction frame 503 and the traction rod 601 and the setting of a 45-degree angle between the traction frame 503 and the horizontal platform 2, the welding machine 6 is driven to make an oblique movement close to the connection angle between the central inclined plate 206 and the horizontal plate 2. The sliding cooperation of the welding machine 6 relative to the central inclined plate 206 can adjust the bending radius clamped by the ports of the two bent pipes 3. The device is suitable for welding between two 45-degree bent pipes 3 under the same bending curvature, and can adjust the welding surface of the bent pipes 3 with different bending radii, adjust the welding center between the two bent pipes 3, ensure the flatness of the welding surface between the two bent pipes 3, and improve the welding effect and welding aesthetics.

[0042] Embodiment 2:

[0043] This embodiment is based on the first embodiment: the top of the threaded rod 101 is located above the mounting platform 1 in the vertical direction, and a lower pressure plate 105 is fixed thereto; the top of the lower pressure plate 105 is slidably engaged with an insert rod 106; a toggle ball 107 is fixed to the top of the insert rod 106; a plug spring 108 is fixedly connected between the insert rod 106 and the bottom of the lower pressure plate 105.

[0044] Specifically, a central rotating plate 109 is fixed on the top of the lower pressing plate 105 , and a toggle frame 110 that is rotatably matched with the inserting rod 106 is rotatably matched on the side of the central rotating plate 109 .

[0045] Furthermore, a downward pressing spring 111 is fixed between the bottom of the pressing and toggling frame 110 and the downward pressing plate 105 , and the diameter of the toggling ball 107 is larger than the inner diameter of the toggling frame 110 , so as to prevent the insertion rod 106 from escaping from the toggling frame 110 .

[0046] The operation process of this embodiment is as follows: the rotation of the threaded rod 101 does not require power supply, and the threaded rod 101 can be manually rotated to adjust the welding surface. The specific method of starting the rotation of the threaded rod 101 is as follows: pressing one end of the toggle frame 110 and the lower pressure plate 105 so that the downward pressure spring 111 fixedly connected between the toggle frame 110 and the lower pressure plate 105 is compressed, and the other end of the toggle frame 110 is lifted upward, and the lifting of the other end of the toggle frame 110 drives the toggle ball 107 fixed on the top of the insertion rod 106 to move upward, wherein the diameter of the toggle ball 107 is larger than the inner diameter of the toggle frame 110 The width makes the toggle ball 107 always located above the toggle frame 110. In addition, the plug spring 108 fixedly connected between the plug rod 106 and the bottom of the lower pressure plate 105 changes from an initial state to a compressed state, so that the plug rod 106 is away from the several plug slots opened on the top of the mounting table 1. Then the threaded rod 101 can be rotated, and the pressure on one end of the toggle frame 110 and the lower pressure plate 105 can be released after adjusting the welding surface, so that the lower pressure spring 111 and the plug spring 108 are restored to a natural state, so that the plug rod 106 is plugged into the plug slot, which is convenient for manual adjustment of the bending pipe welding surface of the device.

[0047] Embodiment three:

[0048] This embodiment is based on the second embodiment: a vertical clamping mechanism 7 identical to the horizontal clamping mechanism 4 is fixedly installed on one side of the mounting platform 1 in the vertical direction, and the horizontal clamping mechanism 4 and the vertical clamping mechanism 7 respectively clamp one end of the two curved pipes 3 away from each other; the horizontal clamping mechanism 4 includes a mounting base plate 401, and a T-shaped ring groove 402 is opened on the top of the mounting base plate 401; a rotating ring 403 is rotatably engaged at the top of the mounting base plate 401, and a T-shaped rail 404 that slides with the T-shaped ring groove 402 is fixed at the bottom of the rotating ring 403.

[0049] Specifically, a slave gear ring 405 is fixed to the side surface of the rotating ring 403 , a micro motor 406 is fixed to the top of the mounting base 401 , a main gear 407 is fixedly connected to the output end of the micro motor 406 , and the main gear 407 and the slave gear ring 405 are meshed with each other.

[0050] Furthermore, a plurality of arc holes 409 distributed in a circular array are provided on the top of the rotating ring 403, a plurality of L-shaped support plates 410 are fixed on the top of the mounting base plate 401, a rectangular groove 411 is penetrated through the top of the plurality of L-shaped support plates 410, a rectangular block 412 is horizontally slidably fitted in the rectangular groove 411, a vertical rod 413 is fixed at the bottom of the rectangular block 412, and a clamping plate 414 is fixed at the top of the vertical rod 413.

[0051] The operation process of this embodiment is as follows: by starting the micro motor 406 fixedly installed on the top of the mounting base plate 401, the main gear 407 rotates, driving the slave gear ring 405 meshing with the main gear 407 to rotate, thereby driving the rotating ring 403 fixed on the side surface of the slave gear ring 405 to rotate, and through the sliding cooperation of a plurality of arc holes 409 opened on the rotating ring 403 and the vertical rod 413, the rectangular block 412 and the clamping plate 414 fixed on the top of the rectangular block 412 are driven to slide towards or away from the center of the horizontal clamping mechanism 4, wherein the sliding cooperation of the rectangular groove 411 and the rectangular block 412 can prevent the clamping plate 414 from rotating, thereby clamping the outer surface of one end of the bent pipe and improving the stability of the welding process.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive variable diameter pipe bending component welding device, comprising a mounting platform (1), characterized in that: The mounting platform (1) is rotatably engaged with a threaded rod (101), the mounting platform (1) is divided into a horizontal direction and a vertical direction, the threaded rod (101) is rotatably engaged with a horizontal platform (2) on its peripheral side surface, and two curved pipes (3) are provided between the mounting platform (1) in the vertical direction and the horizontal platform (2); A threaded block (201) is fixed on one side of the horizontal platform (2) and is threadably matched with the threaded rod (101); a first sprocket (202) and a second sprocket (203) are rotatably matched on one side of the horizontal platform (2); a third sprocket (102) is rotatably matched on one side of the mounting platform (1) in the vertical direction; a transmission chain (103) is provided between the first sprocket (202), the second sprocket (203) and the third sprocket (102); a lifting handle (204) fixedly connected to one end of the transmission chain (103) is fixed on the top of the horizontal platform (2) near the threaded block (201); Two horizontal limit rods (205) are fixed on the top of the horizontal platform (2), and a horizontal clamping mechanism (4) is horizontally slidably matched on the top of the horizontal platform (2). Horizontal sliders (5) that are slidably matched with the horizontal limit rods (205) are fixed on opposite ends of the horizontal clamping mechanism (4). An L-shaped horizontal plate (501) is fixed on one side of the horizontal slider (5), and the L-shaped horizontal plate (501) is fixedly connected to the other end of the transmission chain (103). A plurality of traction springs (502) are fixedly connected between the side of the horizontal platform (2) close to the threaded block (201) and the L-shaped horizontal plate (501); A central inclined plate (206) is fixed on the top of the horizontal platform (2), a welding machine (6) is slidably matched on one side of the central inclined plate (206), and a traction rod (601) is fixed on one side of the welding machine (6); A traction frame (503) that slidably cooperates with the traction rod (601) is fixed on the top of the horizontal sliding block (5).

2. The adaptive variable diameter elbow component welding device according to claim 1 is characterized in that: Two limit baffles (104) are fixed on one side of the mounting platform (1) in the vertical direction, and the threaded block (201) slides up and down along the two limit baffles (104).

3. The adaptive variable diameter elbow component welding device according to claim 2 is characterized in that: Two vertical limit rods (207) are fixed to the top of the mounting platform (1) in the horizontal direction, and the two vertical limit rods (207) are slidably matched with the horizontal platform (2) up and down.

4. The adaptive variable diameter elbow component welding device according to claim 3 is characterized in that: The top of the threaded rod (101) is located above the mounting platform (1) in the vertical direction, and a lower pressure plate (105) is fixed thereto; the top of the lower pressure plate (105) is slidably matched with an insertion rod (106); a toggle ball (107) is fixed to the top of the insertion rod (106); and a plug spring (108) is fixedly connected between the insertion rod (106) and the bottom of the lower pressure plate (105); A center rotating plate (109) is fixed on the top of the lower pressure plate (105), and a toggle frame (110) is rotatably matched with the insert rod (106) on the side of the center rotating plate (109), and a downward pressure spring (111) is fixed between the bottom of the toggle frame (110) and the lower pressure plate (105), and the diameter of the toggle ball (107) is larger than the inner diameter width of the toggle frame (110).

5. The adaptive variable diameter elbow component welding device according to claim 4 is characterized in that: A vertical clamping mechanism (7) identical to the horizontal clamping mechanism (4) is fixedly mounted on one side of the mounting platform (1) in the vertical direction, and the horizontal clamping mechanism (4) and the vertical clamping mechanism (7) respectively clamp one end of the two curved pipes (3) away from each other; The horizontal clamping mechanism (4) comprises a mounting base plate (401), and a T-shaped ring groove (402) is formed on the top of the mounting base plate (401); A rotating ring (403) is rotatably fitted on the top of the installation base plate (401), and a T-shaped rail (404) is fixed on the bottom of the rotating ring (403) and is slidably fitted with the T-shaped ring groove (402).

6. The adaptive variable diameter elbow component welding device according to claim 5, characterized in that: A slave gear ring (405) is fixed on the circumferential side of the rotating ring (403), a micro motor (406) is fixedly installed on the top of the mounting base plate (401), a main gear (407) is fixedly connected to the output end of the micro motor (406), and the main gear (407) and the slave gear ring (405) are meshed with each other.

7. The adaptive variable diameter elbow component welding device according to claim 6, characterized in that: The top of the rotating ring (403) is provided with a plurality of arc holes (409) distributed in a circumferential array, the top of the mounting base plate (401) is fixed with a plurality of L-shaped support plates (410), the tops of the plurality of L-shaped support plates (410) are all penetrated with a rectangular groove (411), a rectangular block (412) is horizontally slidably fitted in the rectangular groove (411), a vertical rod (413) is fixed at the bottom of the rectangular block (412), and a clamping plate (414) is fixed at the top of the vertical rod (413).

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