High-frequency welding device for steel belt pipe manufacturing

Abstract

The utility model discloses a high-frequency welding device for steel belt pipe manufacturing, which relates to the technical field of steel belt pipe manufacturing and comprises a working table, a conveying roller for conveying a steel belt is arranged at the top end of the working table, and an extrusion roller group for extruding and forming the steel belt is arranged on one side of the conveying roller at the top end of the working table. The limiting mechanism is arranged on the workbench; the limiting mechanism comprises a transmission unit, a positioning unit and a limiting unit; and the positioning unit is used for positioning the steel belt, so that the steel belt is located at the central position. By arranging the limiting mechanism, in the process of conveying a new steel belt and before the new steel belt penetrates through the conveying roller, the steel belt can be located at the center position of the conveying roller through the two movable positioning blocks, the steel belt is prevented from deviating, and when steel belts with different widths need to be positioned, the steel belt can be conveniently positioned. And the two positioning blocks can be synchronously driven to move, so that the two positioning blocks are close to each other or far away from each other to position the steel belt, and the positioning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel strip pipe making, in particular to a high-frequency welding device for steel strip pipe making. Background Technique

[0002] Welded steel pipes are formed by welding steel plates rolled into a tubular shape with butt joints or spiral seams. During the manufacturing process, a high-frequency welding device is usually used to extrude the steel strip into a cylindrical shape, and the cylindrical steel strip is welded by a high-frequency induction device.

[0003] In the prior art, when using a high-frequency welding device for steel strip pipe making, the steel strip coil needs to be conveyed through multiple conveying rollers. Each time it is used, the steel strip needs to be positioned so that the steel strip is at the center position of the conveying rollers, ensuring that when the two ends of the steel strip approach each other, they are directly below the welding device. For this reason, the utility model provides a high-frequency welding device for steel strip pipe making. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-frequency welding device for steel strip pipe making to solve the problems mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-frequency welding device for steel strip pipe making, including a workbench, a conveying roller for conveying the steel strip is arranged at the top of the workbench, an extrusion roller group for extruding and forming the steel strip is arranged on one side of the conveying roller at the top of the workbench, and a limiting mechanism arranged on the workbench;

[0006] The limiting mechanism includes a transmission unit, a positioning unit, and a limiting unit;

[0007] The positioning unit is used to position the steel strip so that the steel strip is in the center position;

[0008] The transmission unit is used to synchronously drive the two positioning units to move;

[0009] The limiting unit is used to limit the positioning rod.

[0010] As a further scheme of the utility model: The positioning unit includes a positioning block, a guide rod, a push block, an extrusion block, and a resisting block;

[0011] The positioning block is axially slidably installed on the inner wall of the workbench and extends to the outer wall of the workbench, and the positioning block is used to position the steel strip;

[0012] The guide rod is fixed on the inner wall of the workbench and penetrates through the positioning block, and the guide rod is used to provide guidance for the movement of the positioning block;

[0013] The pushing block is axially and slidably installed inside the guiding rod and extends to the outside of the workbench. The pushing block is used to drive the extrusion block to move synchronously.

[0014] The extrusion block is rotatably connected to the outer wall of the pushing block and is located below the abutting block. The extrusion block is used to apply an upward extrusion force to the abutting block.

[0015] The abutting block is vertically and slidably installed inside the guiding rod and extends to the outside of the guiding rod to contact the inner wall of the positioning block.

[0016] As a further solution of the present utility model: The limiting unit includes a limiting block and a limiting groove.

[0017] The limiting block is fixed to the outer wall of the pushing block and is located inside the workbench. The limiting block is used to cooperate with the limiting groove to limit the movement of the extrusion block.

[0018] The limiting groove is formed on the outer wall of the guiding rod. The limiting groove is used to provide guidance for the movement of the limiting block.

[0019] As a further solution of the present utility model: The transmission unit includes a rack and a gear. The rack is fixed to the bottom end of the positioning block. The rack is used to apply a rotational thrust to the gear during movement.

[0020] The gear is rotatably installed at the top end of the workbench and extends to one side outer wall of the rack to mesh with the rack. The gear is used to drive another rack to axially move.

[0021] As a further solution of the present utility model: The number of the racks is two. The two racks are symmetrically and staggeredly distributed on both sides of the gear, and the two racks are respectively fixed to the bottom ends of the two positioning blocks.

[0022] As a further solution of the present utility model: The outer wall of the limiting groove is integrally in an "L" shape structure, and the outer wall of the limiting block matches the inner side of the limiting groove.

[0023] As a further solution of the present utility model: An inclined convex part is formed on one side of the top end of the extrusion block relative to the abutting block. The outer walls of the two positioning blocks are integrally in a flared shape structure, and the inclined surface of the positioning block faces the direction of the steel strip. A sliding groove for the axial movement of the extrusion block is formed inside the guiding rod.

[0024] Compared with the prior art, the beneficial effects of the present utility model are:

[0025] By setting a limiting mechanism, during the process of conveying a new steel strip, before the new steel strip passes through the conveying rollers, the steel strip can be positioned at the center of the conveying rollers by two movable positioning blocks, avoiding the deviation of the steel strip. And when positioning steel strips of different widths is required, the two positioning blocks can be driven to move synchronously, making the two positioning blocks approach or move away from each other to position the steel strip, improving the positioning efficiency. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural view of the present utility model;

[0027] Figure 2 is a schematic structural view of the limiting mechanism of the present utility model;

[0028] Figure 3 is a partial enlarged view of part A of the present utility model.

[0029] In the figure: 1, workbench; 2, conveying rollers; 3, extrusion roller group; 4, limiting mechanism; 401, positioning block; 402, guide rod; 403, push block; 404, extrusion block; 405, abutting block; 406, limiting block; 407, limiting groove; 408, rack; 409, gear. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1 - 3 , in the embodiment of the present utility model, a high-frequency welding device for steel pipe making includes a workbench 1, a conveying roller 2 for conveying a steel strip is arranged at the top of the workbench 1, an extrusion roller group 3 for extruding and forming the steel strip is arranged on one side of the conveying roller 2 at the top of the workbench 1, and a limiting mechanism 4 arranged on the workbench 1;

[0032] The limiting mechanism 4 includes a transmission unit, a positioning unit, and a limiting unit;

[0033] The positioning unit is used to position the steel strip so that the steel strip is in the central position;

[0034] The transmission unit is used to drive two positioning units to move synchronously;

[0035] The limiting unit is used to limit the positioning rod;

[0036] The positioning unit includes a positioning block 401, a guide rod 402, a push block 403, a pressing block 404, and a resisting block 405;

[0037] The positioning block 401 is axially slidably installed on the inner wall of the workbench 1 and extends to the outer wall of the workbench 1. The positioning block 401 is used to position the steel strip;

[0038] The guide rod 402 is fixed on the inner wall of the workbench 1 and penetrates through the positioning block 401. The guide rod 402 is used to guide the movement of the positioning block 401;

[0039] The push block 403 is axially slidably installed inside the guide rod 402 and extends to the outside of the workbench 1. The push block 403 is used to drive the pressing block 404 to move synchronously;

[0040] The pressing block 404 is rotatably connected to the outer wall of the push block 403 and is located below the resisting block 405. The pressing block 404 is used to apply an upward pressing force to the resisting block 405;

[0041] The resisting block 405 is vertically slidably installed on the inner wall of the guide rod 402 and extends to the outer wall of the guide rod 402 to contact the inner wall of the positioning block 401;

[0042] The limiting unit includes a limiting block 406 and a limiting groove 407;

[0043] The limiting block 406 is fixed on the outer wall of the push block 403 and is located inside the workbench 1. The limiting block 406 is used to cooperate with the limiting groove 407 to limit the movement of the pressing block 404;

[0044] The limiting groove 407 is opened on the outer wall of the guide rod 402. The limiting groove 407 is used to guide the movement of the limiting block 406;

[0045] The transmission unit includes a rack 408 and a gear 409. The rack 408 is fixed at the bottom end of the positioning block 401. The rack 408 is used to apply a rotational thrust to the gear 409 during movement;

[0046] The gear 409 is rotatably installed at the top end of the workbench 1 and extends to one side outer wall of the rack 408 to mesh with the rack 408. The gear 409 is used to drive another rack 408 to axially move.

[0047] In this embodiment: When using this device, the steel strip to be pipe - made is passed through the conveying rollers 2. Through the conveying of the conveying rollers 2, the steel strip is conveyed into the extrusion roller group 3. The pipe is extruded into a tubular shape by the extrusion roller group 3. The steel strip is welded by high - frequency welding. Then it is cooled through a water tank. Then it is cut into segments by a flying saw through a computer, completing the operation of steel strip pipe - making;

[0048] During the conveying process of the steel strip, the steel strip first contacts the inclined outer wall of the positioning block 401, applying a thrust to the positioning block 401. The stressed positioning block 401 will axially move along the outer wall of the guide rod 402. The movement of one positioning block 401 will synchronously drive the axial movement of one rack 408. The moving rack 408 will apply a rotational thrust to the gear 409, thereby driving the movement of the other rack 408 and positioning block 401. The moving distances of the two positioning blocks 401 are the same, keeping the steel strip always at the central position of the conveying roller 2, thus positioning the steel strip. After the positioning is completed, by applying a thrust to the push block 403, the stressed push block 403 will synchronously drive the extrusion block 404 to move. The moving extrusion block 404 will apply an upward thrust to the abutting block 405 through the inclined protrusion at the top. The stressed abutting block 405 will move and abut against the inner side of the positioning block 401 to limit the movement of the positioning block 401. Then, the push block 403 can be rotated. The rotating push block 403 will synchronously drive the limiting block 406 to rotate, causing the limiting block 406 to axially slide along the limiting groove 407 and then vertically slide, thereby limiting the axial movement of the push block 403, keeping the abutting block 405 always abutting against the inner side of the positioning block 401 to limit the positioning block 401, preventing the positioning block 401 from moving during the conveying process of the steel strip, achieving the purpose of positioning the steel strip, and it can be automatically adjusted according to the width of the steel strip, keeping the steel strip always at the central position of the conveying roller 2.

[0049] Please refer specifically to Figures 1 - 3 , there are two racks 408, and the two racks 408 are symmetrically and staggeredly distributed on both sides of the gear 409, and the two racks 408 are respectively fixedly connected to the bottom ends of the two positioning blocks 401.

[0050] In this embodiment: Through this structure, under the action of the rack 408 and the gear 409, when one rack 408 axially moves, it can drive the gear 409 to rotate, thereby driving the other rack 408 to pull the positioning block 401 to move synchronously, making the moving distances of the two positioning blocks 401 the same.

[0051] Please refer specifically to Figures 1 - 3 , the outer wall of the limiting groove 407 is integrally in an "L" - shaped structure, and the outer wall of the limiting block 406 matches the inner side of the limiting groove 407.

[0052] In this embodiment: Through this structure, under the action of the limiting groove 407, the limiting block 406 can move along the "L" - shaped inner side of the limiting groove 407 to limit the axial direction of the push block 403.

[0053] Please refer specifically to Figures 1 - 3, a slanting protruding part is formed at the top of the extrusion block 404 on one side of the abutting block 405. The outer walls of the two positioning blocks 401 are integrally in an inverted-V structure, and the slanting surfaces of the positioning blocks 401 face the direction of the steel strip. A sliding groove for the axial movement of the extrusion block 404 is formed on the inner side of the guide rod 402.

[0054] In this embodiment: with this structure, when the pushing block 403 moves axially to drive the extrusion block 404 to move synchronously, the extrusion block 404 will move along with the movement of the pushing block 403. When the pushing block 403 rotates, due to the axial movement and sliding of the extrusion block 404, the extrusion block 404 will not rotate along with the rotation of the pushing block 403, so that the slanting protruding part at the top of the extrusion block 404 always abuts against the outer wall of the abutting block 405.

[0055] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A high-frequency welding device for steel strip pipe making, comprising a workbench (1), wherein a conveying roller (2) for conveying the steel strip is arranged at the top of the workbench (1), and an extrusion roller group (3) for extruding the steel strip is arranged at the top of the workbench (1) and on one side of the conveying roller (2), wherein the device is characterized in that: A limiting mechanism (4) arranged on the workbench (1); The limiting mechanism (4) comprises a transmission unit, a positioning unit and a limiting unit; The positioning unit is used to position the steel belt so that the steel belt is in the center position; The transmission unit is used to synchronously drive the two positioning units to move; The limiting unit is used to limit the positioning rod.

2. A high frequency welding device for steel strip pipe making according to claim 1, characterized in that: The positioning unit comprises a positioning block (401), a guide rod (402), a push block (403), a squeeze block (404), and a stop block (405); The positioning block (401) is axially slidably mounted on the inner wall of the workbench (1) and extends to the outer wall of the workbench (1), and the positioning block (401) is used to position the steel strip; The guide rod (402) is fixed to the inner wall of the workbench (1) and passes through the positioning block (401), and the guide rod (402) is used to provide guidance for the movement of the positioning block (401); The push block (403) is axially slidably mounted on the inner side of the guide rod (402) and extends to the outside of the workbench (1), and the push block (403) is used to drive the extrusion block (404) to move synchronously; The extrusion block (404) is rotatably connected to the outer wall of the push block (403) and is located below the stop block (405). The extrusion block (404) is used to give the stop block (405) an extrusion force to move upward. The stop block (405) is vertically slidably mounted on the inner wall of the guide rod (402) and extends to the outer wall of the guide rod (402) to contact the inner wall of the positioning block (401).

3. A high frequency welding device for steel strip pipe making according to claim 1, characterized in that: The limiting unit comprises a limiting block (406) and a limiting groove (407); The limit block (406) is fixed on the outer wall of the push block (403) and is located inside the workbench (1), and the limit block (406) is used to cooperate with the limit groove (407) to limit the movement of the extrusion block (404); The limiting groove (407) is provided on the outer wall of the guide rod (402), and the limiting groove (407) is used to provide guidance for the movement of the limiting block (406).

4. A high frequency welding device for steel strip pipe making according to claim 1, characterized in that: The transmission unit comprises a rack (408) and a gear (409), wherein the rack (408) is fixed to the bottom end of the positioning block (401), and the rack (408) is used to provide a rotational thrust to the gear (409) during the movement; The gear (409) is rotatably mounted on the top of the workbench (1) and extends to an outer wall of one side of the rack (408) to mesh with the rack (408). The gear (409) is used to drive another rack (408) to move axially.

5. A high frequency welding device for steel strip pipe making according to claim 4, characterized in that: The number of the racks (408) is two, and the two racks (408) are symmetrically and staggeredly distributed on both sides of the gear (409), and the two racks (408) are fixedly connected to the bottom ends of the two positioning blocks (401) respectively.

6. A high frequency welding device for steel strip pipe making according to claim 3, characterized in that: The outer wall of the limiting groove (407) is in an "L"-shaped structure as a whole, and the outer wall of the limiting block (406) matches the inner side of the limiting groove (407).

7. A high frequency welding device for steel strip pipe making according to claim 2, characterized in that: The top end of the extrusion block (404) is formed with an inclined protrusion on one side of the stop block (405), the outer walls of the two positioning blocks (401) are in an overall figure-eight structure, and the inclined surface of the positioning block (401) faces the direction of the steel belt, and the inner side of the guide rod (402) is formed with a sliding groove for axial movement of the extrusion block (404).

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