Welding device for corrugated pipe production and manufacturing

Abstract

The utility model provides a welding device for corrugated pipe production and manufacturing, which comprises a mounting plate, a fitting ring is arranged at the top of the middle of the mounting plate, a mounting groove is formed in one side of the interior of the fitting ring, two fitting strips are arranged on two sides of the interior of the fitting ring, and the mounting groove is formed in the middle of the mounting plate. A cavity is formed between the two attaching strips, one end of each attaching strip is attached to the outer wall of the corrugated pipe, a submerged-arc welding device is arranged in the mounting groove, and the welding end of the submerged-arc welding device is arranged between the two attaching strips. The corrugated pipe welding device is reasonable in design, the attaching strips are attached to the bottoms of the shells of the two corrugated pipes, so that a gap between the two corrugated pipes enters the position between the two attaching strips, then welding flux is poured into the position between the two attaching strips, welding is always located at the welding position, and the corrugated pipes cannot rotate along with the welding flux; and sufficient welding flux is kept at the welding position of the corrugated pipe.

Description

Technical Field

[0001] The utility model mainly relates to the field of corrugated pipes, and in particular to a welding device for producing and manufacturing corrugated pipes. Background Art

[0002] A bellows refers to a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and stretching direction. Bellows are widely used in instruments and meters, and their main purpose is to serve as a measuring element for pressure measuring instruments, converting pressure into displacement or force. The bellows has a thinner wall and higher sensitivity, with a measuring range of tens of Pa to tens of MPa. Its open end is fixed, the sealed end is in a free state, and an auxiliary coil spring or reed is used to increase its elasticity. During operation, it stretches along the length of the tube under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure. The movable end drives the pointer to directly indicate the magnitude of the pressure. Bellows are often combined with displacement sensors to form a pressure sensor that outputs electricity, and are sometimes also used as isolation elements. Since the extension of the bellows requires a larger volume change, its response speed is lower than that of the Bourdon tube. Bellows are suitable for measuring low pressure;

[0003] When two bellows are connected, welding is usually used. Welding is an important step to ensure the firm connection and sealing of the bellows.

[0004] During the operation of the specific embodiment, the following defects were found:

[0005] When welding two annular bellows together using submerged arc welding, it is necessary to fill the gap between the two bellows with flux. However, since the outer wall of the bellows is arc-shaped and continuous, the flux cannot adhere to the gap between the two bellows, causing the flux to fall through the gap.

[0006] It should be noted that since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides a welding device for producing a corrugated pipe, which is used to solve the technical problems existing in the above-mentioned background technology.

[0009] 2. Technical solution:

[0010] To achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: a welding device for producing corrugated pipes, comprising a mounting plate, a bonding ring is provided on the top in the middle of the mounting plate, a mounting groove is opened on one side of the interior of the bonding ring, bonding strips are provided on both sides of the interior of the bonding ring, the number of the bonding strips is set to two, a cavity is formed between the two bonding strips, one end of the bonding strip is bonded to the outer wall of the corrugated pipe, a submerged arc welding device is provided inside the mounting groove, the welding end of the submerged arc welding is provided between the two bonding strips, positioning blocks are provided at both ends of the mounting plate, a transmission structure is provided inside the mounting plate, a bellows device fixing structure is provided inside the transmission structure, the bellows device fixing structure is provided at both ends of the mounting plate, vibration structures are provided on both sides of the top of the mounting plate, bellows are provided on the outer wall of the bellows device fixing structure, and the center lines of the two bellows are aligned with each other;

[0011] The vibration structure includes a mounting block, which is arranged on both sides of the top of the mounting plate, the interior of the mounting block is rotatably connected to a rotating wheel, the outer wall of one side of the mounting block is rotatably connected to a cam, the cam is connected to the rotating wheel, the outer wall of the mounting block is rotatably connected to a swing rod, a flat spiral spring is arranged between the swing rod and the mounting block, a hammer head is arranged at one end of the swing rod, a follower wheel is arranged at the connection position between the swing rod and the mounting block, and a follower bar is arranged on one side of the follower wheel.

[0012] Furthermore, the fitting ring is configured to be arc-shaped, and the fitting ring and the mounting plate are detachably connected via bolts.

[0013] Furthermore, the transmission structure includes a fixed groove and a rotating frame. The fixed groove is opened in the middle of the top of the mounting plate. A transmission worm is rotatably connected inside the fixed groove, and the rotation directions of the two ends of the transmission worm are opposite.

[0014] Furthermore, the rotating frame is rotatably connected to the inner wall of the positioning block, a worm wheel is provided in the middle of the rotating frame, the worm wheel and the transmission worm are meshed with each other, a positioning ring is provided in the middle of the worm wheel, and positioning holes are opened on both sides of the positioning ring.

[0015] Furthermore, the inner wall of the positioning hole is rotatably connected to a transmission screw, and a synchronous belt device is provided between the two transmission screws.

[0016] Furthermore, the bellows fixing structure includes a base plate, threaded holes are opened on both sides of the base plate, the base plate is connected to the transmission screw through the threaded holes, an electric telescopic rod is provided at the bottom of the base plate, a push rod is provided at the output end of the electric telescopic rod, the push rod is slidably connected to the base plate, and an auxiliary block is provided on the outer wall of the push rod.

[0017] Furthermore, a guide groove is provided inside the bottom plate, an inner wall of the guide groove is slidably connected to a bonding plate, and an outer wall of the bonding plate is rotatably connected to a roller.

[0018] Furthermore, a limiting shaft is provided in the middle of the top of the bottom plate, the limiting shaft is arranged in an octagonal shape, an auxiliary groove is provided on each side of the limiting shaft, and a push rod is provided on the inner wall of the limiting shaft.

[0019] Furthermore, one side of the laminating plate is rotatably connected to a connecting bar, the connecting bar is slidably connected to the inside of the auxiliary groove, and the other end of the connecting bar is rotatably connected to the auxiliary block.

[0020] 3.Beneficial effects:

[0021] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0022] The utility model is provided with a bonding strip that is bonded to the bottom of the shell of the two bellows, so that the gap between the two bellows enters between the two bonding strips, and then the flux is poured between the two bonding strips, so that the welding is always in the welding position and does not move with the rotation of the bellows, so that there is sufficient flux at the welding position of the bellows;

[0023] The motor drives the rotating wheel to rotate, and the outer wall of the rotating wheel fits against the outer wall of the bellows, allowing the bellows to rotate and achieve submerged arc welding of the bellows. The rotating wheel easily drives the follower cam during rotation, and then the cam drives the follower rod to rotate, causing the follower rod to drive the swing rod to rotate to one side through the follower wheel and squeeze the flat scroll spring. When the cam and follower rod separate, the flat scroll spring drives the swing rod to reset, causing the swing rod to drive the hammer head to fit against the outer wall of the bellows, vibrating the bellows. Hammering can control the deformation of the weld metal, stabilize the size, eliminate welding residual stress, and prevent welding cracks. This is because hammering causes the weld metal to expand laterally, so that the tensile stress inside the weld is offset during cooling;

[0024] Place the two bellows into the outer wall of the bellows fixing structure, and then fix the bellows while the bonding plate moves outward. The bonding plate moving outward at a constant speed can limit the position of the bellows, so that the two bellows remain in the same horizontal plane, and there is no need to adjust the position of the bellows subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the three-dimensional unfolded structure of the bellows fixing structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating frame of the present utility model.

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the mounting plate of the present utility model.

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the vibration structure of the present utility model.

[0031] Reference numerals:

[0032] 1. Mounting plate; 2. Fitting ring; 3. Mounting groove; 4. Fitting strip; 5. Vibration structure; 501. Mounting block; 502. Rotating wheel; 503. Cam; 504. Swinging rod; 505. Hammer; 506. Follower wheel; 507. Follower strip; 6. Fixing groove; 7. Drive worm; 8. Positioning block; 9. Rotating frame; 10. Worm gear; 11. Positioning ring; 12. Positioning hole; 13. Drive screw; 14. Synchronous belt device; 15. Bellows device fixing structure; 1501. Bottom plate; 1502. Electric telescopic rod; 1503. Push rod; 1504. Auxiliary block; 1505. Guide groove; 1506. Fitting plate; 1507. Roller; 1508. Connecting strip; 1509. Limiting shaft; 1510. Auxiliary groove. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0036] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," "provided with," "provided on," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0037] Refer to the attached Figure 1-6 , a welding device for producing corrugated pipes, comprising a mounting plate 1, a fitting ring 2 is provided on the top in the middle of the mounting plate 1, a mounting groove 3 is opened on one side of the interior of the fitting ring 2, fitting strips 4 are provided on both sides of the interior of the fitting ring 2, the number of the fitting strips 4 is set to two, a cavity is formed between the two fitting strips 4, one end of the fitting strip 4 is fitted with the outer wall of the corrugated pipe, a submerged arc welding device is provided inside the mounting groove 3, the welding end of the submerged arc welding is provided between the two fitting strips 4, positioning blocks 8 are provided at both ends of the mounting plate 1, a transmission structure is provided inside the mounting plate 1, a bellows fixing structure 15 is provided inside the transmission structure, the bellows fixing structure 15 is provided at both ends of the mounting plate 1, vibration structures 5 are provided on both sides of the top of the mounting plate 1, the outer wall of the bellows fixing structure 15 is provided with bellows, and the center lines of the two bellows are aligned with each other;

[0038] The vibration structure 5 includes a mounting block 501, which is arranged on both sides of the top of the mounting plate 1. The interior of the mounting block 501 is rotatably connected to a rotating wheel 502, and the outer wall of one side of the mounting block 501 is rotatably connected to a cam 503, and the cam 503 is connected to the rotating wheel 502. The outer wall of the mounting block 501 is rotatably connected to a swing rod 504, and a flat spiral spring is arranged between the swing rod 504 and the mounting block 501. A hammer head 505 is arranged at one end of the swing rod 504, and a follower wheel 506 is arranged at the connection position between the swing rod 504 and the mounting block 501, and a follower bar 507 is arranged on one side of the follower wheel 506.

[0039] Furthermore, in the above technical solution, the fitting ring 2 is arranged in an arc shape, and the fitting ring 2 and the mounting plate 1 are detachably connected by bolts. The arc-shaped fitting ring 2 facilitates the fitting strip 4 inside the fitting ring 2 to fit with the outer walls of the two corrugated tubes, and the two corrugated tubes are located between the two fitting strips 4. Flux is filled between the two fitting strips 4, so that the flux moves to the bottom position of the corrugated tube and fills the gap.

[0040] Furthermore, in the above technical solution, the transmission structure includes a fixed groove 6 and a rotating frame 9. The fixed groove 6 is opened in the middle of the top of the mounting plate 1. The internal rotation of the fixed groove 6 is connected to the transmission worm 7. The rotation directions of the two ends of the transmission worm 7 are opposite. The rotating frame 9 is rotatably connected to the inner wall of the positioning block 8. A worm gear 10 is provided in the middle of the rotating frame 9. The worm gear 10 and the transmission worm 7 are meshed with each other. A positioning ring 11 is provided in the middle of the worm gear 10. Positioning holes 12 are provided on both sides of the positioning ring 11. The positioning holes The inner wall of 12 is connected to the transmission screw 13 for rotation, and a synchronous belt device 14 is provided between the two transmission screws 13. The motor is started, and the motor drives the transmission worm 7 to rotate, and then the transmission worm 7 drives the rotating frame 9 to rotate through the worm gear 10, and the rotating frame 9 drives the bellows device fixed structure 15 to rotate 90°, so that the bellows device fixed structure 15 can drive the bellows to rotate, and then the transmission screw 13 rotates to drive the bellows device fixed structure 15 to move toward the middle, so that the two bellows can be aligned and the stability between the bellows during the welding process is maintained.

[0041] Furthermore, in the above technical solution, the bellows fixing structure 15 includes a bottom plate 1501, threaded holes are provided on both sides of the bottom plate 1501, the bottom plate 1501 is connected to the transmission screw 13 through the threaded holes, an electric telescopic rod 1502 is provided at the bottom of the bottom plate 1501, and a push rod 1503 is provided at the output end of the electric telescopic rod 1502, the push rod 1503 is slidably connected to the bottom plate 1501, and an auxiliary block 1504 is provided on the outer wall of the push rod 1503, a guide groove 1505 is provided inside the bottom plate 1501, and a fitting plate 1506 is slidably connected to the inner wall of the guide groove 1505, and a roller 1507 is rotatably connected to the outer wall of the fitting plate 1506, and a limiting shaft 1509 is provided in the middle of the top of the bottom plate 1501, and the limiting shaft 1509 is set to Octagonal, each side of the limiting shaft 1509 is provided with an auxiliary groove 1510, the inner wall of the limiting shaft 1509 is provided with a push rod 1503, one side of the bonding plate 1506 is rotatably connected to a connecting strip 1508, the connecting strip 1508 is slidably connected to the inside of the auxiliary groove 1510, and the other end of the connecting strip 1508 is rotatably connected to the auxiliary block 1504, the corrugated tube is placed on the top of the bottom plate 1501, and then the electric telescopic rod 1502 is started, the electric telescopic rod 1502 pushes the auxiliary block 1504 to move upward, and the auxiliary block 1504 pushes the connecting strip 1508 to rotate, so that the connecting strip 1508 pushes the bonding plate 1506 to expand outward synchronously, and then the roller 1507 on the outer wall of the bonding plate 1506 is in contact with the inner wall of the corrugated tube, fixing the corrugated tube while allowing the corrugated tube to rotate.

[0042] In this embodiment, when welding is required between two bellows by a welding device, the bellows are placed on top of the base plate 1501, and then the electric telescopic rod 1502 is started. The electric telescopic rod 1502 drives the push rod 1503 to move upward, and the push rod 1503 drives the connecting bar 1508 to rotate through the auxiliary block 1504. The connecting bar 1508 pushes the laminating plate 1506 to slide outward along the inner wall of the guide groove 1505, so that the roller 1507 on the outer wall of the laminating plate 1506 is in contact with the outer wall of the bellows, thereby fixing the bellows.

[0043] Then the motor is started, and the motor drives the transmission worm 7 to rotate, and the transmission worm 7 drives the rotating frame 9 to rotate through the worm gear 10. The transmission worm 7 and the worm gear 10 have a self-locking function. The rotation of the worm gear 10 drives the rotating frame 9 to rotate, and the rotating frame 9 drives the bellows device fixing structure 15 to rotate 90°, so that the two bellows are aligned with each other, and the outer walls of the bellows are in contact with the outer wall of the rotating wheel 502. After that, the motor is started, and the motor drives the transmission screw 13 to rotate. The transmission screw 13 drives the bellows device fixing structure 15 to move inward, so that the bellows device fixing structure 15 drives one end of the bellows to enter the interior of the bonding strip 4, and the gap between the two bellows enters the interior of the bonding strip 4 and is aligned;

[0044] Then pour the flux between the two bonding strips 4, let the flux slide to the middle of the bonding strips 4 and fill the bottom of the weld, and then install the submerged arc welding device set inside the groove 3 to weld the weld;

[0045] During the welding process, the motor is started, and the motor drives the rotating wheel 502 to rotate. The outer wall of the rotating wheel 502 fits with the outer wall of the bellows, thereby driving the bellows to rotate, and the submerged arc welding device performs 360° welding on the bellows. When the rotating wheel 502 rotates, the cam 503 is synchronously driven to rotate, and the cam 503 drives the follower bar 507 to move upward, so that the follower bar 507 drives the follower wheel 506 to rotate, and the follower wheel 506 drives the swing rod 504 to rotate and squeeze the flat scroll spring. When the follower bar 507 is separated from the cam 503, the flat scroll spring resets and drives the swing rod 504 to reset. The swing rod 504 drives the hammer head 505 to knock on the outer wall of the bellows.

[0046] After welding is completed, the bellows fixing structure 15 on one side of the mounting plate 1 is separated from the inner wall of the bellows, and then the motor drives the transmission worm 7 to reverse, and the transmission worm 7 drives the rotating frame 9 to reverse through the worm gear 10, and the rotating frame 9 drives the bellows fixing structure 15 to reverse, so that the bellows fixing structure 15 on one side is separated from the inner wall of the bellows, and the other side drives the welded bellows to reverse 90° and then separate from the bellows, and then the bellows is removed.

[0047] The above-mentioned embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A welding device for producing corrugated pipes, characterized by: A mounting plate (1) is provided with a fitting ring (2) at the top in the middle of the mounting plate (1), a mounting groove (3) is provided on one side of the interior of the fitting ring (2), fitting strips (4) are provided on both sides of the interior of the fitting ring (2), the number of the fitting strips (4) is set to two, a cavity is formed between the two fitting strips (4), one end of the fitting strip (4) is fitted with the outer wall of the corrugated tube, a submerged arc welding device is provided inside the mounting groove (3), the welding end of the submerged arc welding is provided between the two fitting strips (4), positioning blocks (8) are provided at both ends of the mounting plate (1), a transmission structure is provided inside the mounting plate (1), a bellows fixing structure (15) is provided inside the transmission structure, the bellows fixing structure (15) is provided at both ends of the mounting plate (1), a vibration structure (5) is provided on both sides of the top of the mounting plate (1), a bellows is provided on the outer wall of the bellows fixing structure (15), and the center lines of the two bellows are aligned with each other; A vibration structure (5) comprises a mounting block (501), the mounting block (501) being arranged on both sides of the top of the mounting plate (1), the interior of the mounting block (501) being rotatably connected to a rotating wheel (502), an outer wall of one side of the mounting block (501) being rotatably connected to a cam (503), the cam (503) being connected to the rotating wheel (502), the outer wall of the mounting block (501) being rotatably connected to a swing rod (504), a planar volute spring being arranged between the swing rod (504) and the mounting block (501), a hammer head (505) being arranged at one end of the swing rod (504), a follower wheel (506) being arranged at the connection position between the swing rod (504) and the mounting block (501), and a follower bar (507) being arranged on one side of the follower wheel (506).

2. The welding device for producing a corrugated pipe according to claim 1, characterized in that: The fitting ring (2) is configured to be arc-shaped, and the fitting ring (2) and the mounting plate (1) are detachably connected via bolts.

3. The welding device for producing a corrugated pipe according to claim 1, characterized in that: The transmission structure comprises a fixed groove (6) and a rotating frame (9), wherein the fixed groove (6) is opened in the middle of the top of the mounting plate (1), and a transmission worm (7) is rotatably connected inside the fixed groove (6), and the rotation directions of the two ends of the transmission worm (7) are opposite.

4. The welding device for producing a corrugated pipe according to claim 3, characterized in that: The rotating frame (9) is rotatably connected to the inner wall of the positioning block (8), a worm wheel (10) is provided in the middle of the rotating frame (9), the worm wheel (10) and the transmission worm (7) are meshed with each other, a positioning ring (11) is provided in the middle of the worm wheel (10), and positioning holes (12) are provided on both sides of the positioning ring (11).

5. The welding device for producing a corrugated pipe according to claim 4, characterized in that: The inner wall of the positioning hole (12) is rotatably connected to a transmission screw (13), and a synchronous belt device (14) is provided between the two transmission screws (13).

6. The welding device for producing a corrugated pipe according to claim 1, characterized in that: The bellows fixing structure (15) comprises a base plate (1501), threaded holes are provided on both sides of the base plate (1501), the base plate (1501) is connected to the transmission screw (13) via the threaded holes, an electric telescopic rod (1502) is provided at the bottom of the base plate (1501), a push rod (1503) is provided at the output end of the electric telescopic rod (1502), the push rod (1503) is slidably connected to the base plate (1501), and an auxiliary block (1504) is provided on the outer wall of the push rod (1503).

7. The welding device for producing a corrugated pipe according to claim 6, characterized in that: A guide groove (1505) is provided inside the bottom plate (1501), an inner wall of the guide groove (1505) is slidably connected to a bonding plate (1506), and an outer wall of the bonding plate (1506) is rotatably connected to a roller (1507).

8. The welding device for producing a corrugated pipe according to claim 6, characterized in that: A limiting shaft (1509) is provided in the middle of the top of the bottom plate (1501), and the limiting shaft (1509) is configured as an octagon. An auxiliary groove (1510) is provided on each side of the limiting shaft (1509), and a push rod (1503) is provided on the inner wall of the limiting shaft (1509).

9. The welding device for producing a corrugated pipe according to claim 7, characterized in that: One side of the laminating plate (1506) is rotatably connected to a connecting bar (1508), the connecting bar (1508) is slidably connected to the inside of the auxiliary groove (1510), and the other end of the connecting bar (1508) is rotatably connected to the auxiliary block (1504).

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