Welded pipe extrusion roller with heating function

Abstract

The utility model discloses a welded pipe squeeze roller with a heating function, particularly relates to the technical field of welded pipe processing, and comprises a squeeze roller body, a rotating shaft is fixed at one end of the squeeze roller body, the squeeze roller body is hollow, a heating rod is arranged in the squeeze roller body, and a heating rod power line at one end of the heating rod extends out of one end of the squeeze roller body. A supporting assembly is arranged at the other end of the extrusion roller body and comprises a movable hollow shaft and a fixed hollow shaft, the movable hollow shaft is arranged at the other end of the extrusion roller body and fixed to the extrusion roller body, and the fixed hollow shaft is arranged at the end, away from the extrusion roller body, of the movable hollow shaft. A connecting ring is arranged at the end, close to the extrusion roller body, of the movable hollow shaft. When the extrusion roller body rotates and curls a steel plate, the steel plate is heated by the heating rod, so that the steel plate can be curled and formed, the heating rod does not rotate along with the extrusion roller body, a power line of the heating rod is prevented from twisting and breaking to generate danger, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welded pipe processing, in particular to a welded pipe extrusion roller with a heating function. Background Art

[0002] Welded pipe is a steel pipe made by welding steel plates or strips after curling them into shape using extrusion rollers. The production process of welded steel pipe is simple, the production efficiency is high, and there are many varieties and specifications. There are galvanized welded pipes, oxygen-blown welded pipes, wire casings, metric welded pipes, roller pipes, deep well pump pipes, automobile pipes, transformer pipes, electric welded thin-walled pipes, electric welded special-shaped pipes, scaffolding pipes, spiral welded pipes and other products.

[0003] In order to improve the quality of welded pipes, a welded pipe extrusion roller with a heating function is disclosed in prior art publication number CN219425334U. A heating rod is installed inside the extrusion roller body, and the extrusion roller body is heated by the heating rod body. When the extrusion roller body extrude the plate, the plate can be more easily extruded and deformed due to the high temperature, so that the quality of the welded pipe can be better.

[0004] However, as is well known, the heating rod needs to be connected to a power source to work. However, in the prior art, since the heating rod is located outside the central axis of the extrusion roller body, when the extrusion roller body rotates, the heating rod will be driven to rotate around the central axis of the extrusion roller body. Therefore, the wire of the heating rod will be twisted and finally broken, which is very dangerous and has potential safety hazards. Utility Model Content

[0005] The utility model aims to provide a welding pipe extrusion roller with a heating function. When the extrusion roller body rotates to curl the steel plate, heating the steel plate by a heating rod is beneficial to the curling and forming of the steel plate. The heating rod does not rotate with the extrusion roller body, thereby avoiding the danger of twisting and breaking of the power cord of the heating rod, thereby improving safety.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a welding pipe extrusion roller with a heating function, comprising an extrusion roller body, a rotating shaft is fixed at one end of the extrusion roller body, the other end of the extrusion roller body is open, the interior of the extrusion roller body is hollow and a heating rod is provided inside the extrusion roller body, and a heating rod power cord at one end of the heating rod extends out of one end of the extrusion roller body.

[0007] A supporting assembly is provided at the other end of the extrusion roller body, and the supporting assembly includes a movable hollow shaft and a fixed hollow shaft. The movable hollow shaft is provided at the other end of the extrusion roller body and is fixed to the extrusion roller body, and the fixed hollow shaft is provided at one end of the movable hollow shaft away from the extrusion roller body, and the movable hollow shaft and the fixed hollow shaft are rotatably connected.

[0008] A connecting ring is provided at one end of the movable hollow shaft close to the extrusion roller body. The connecting ring is rotatably connected to the movable hollow shaft and fixedly connected to the fixed hollow shaft. The connecting ring is arranged inside the extrusion roller body, the heating rod is fixed on the connecting ring, and the power cord of the heating rod passes through the connecting ring, the movable hollow shaft and the fixed hollow shaft.

[0009] Preferably, a first flange is fixed to the outer wall of the movable hollow shaft, the first flange is fixed to the other end of the extrusion roller body by bolts, and a first sealing ring is provided between the first flange and the other end of the extrusion roller body.

[0010] Preferably, a second flange is fixed to the outer wall of one end of the fixed hollow shaft away from the movable hollow shaft, so as to facilitate fixing the fixed hollow shaft to the extrusion machine body.

[0011] Preferably, a convex ring is provided at one end of the movable hollow shaft close to the fixed hollow shaft, and the convex ring is integrally formed with the movable hollow shaft, and a circular groove is opened at one end of the fixed hollow shaft close to the movable hollow shaft, and the convex ring is arranged in the circular groove and rotatably connected to the circular groove through a bearing.

[0012] Preferably, a connecting tube is fixed on the side of the connecting ring close to the hollow shaft, and the connecting ring and the connecting tube are integrally formed, and the end of the connecting tube away from the connecting ring passes through the movable hollow shaft and the convex ring and extends into the fixed hollow shaft, and the outer wall of the connecting tube is fixedly connected to the inner wall of the fixed hollow shaft.

[0013] Preferably, a second sealing ring is fixed to the outer wall of the connecting ring, and the second sealing ring is in contact with the inner wall of the extrusion roller.

[0014] Preferably, an outer roller body is provided on the outer side of the extrusion roller body, and the outer roller body includes two semi-ring bodies, and the two semi-ring bodies are sleeved on the outer side of the extrusion roller body and closely fit with the extrusion roller body;

[0015] Both ends of the semi-ring body are integrally formed with semi-circular rings, a circular ring formed by two adjacent semi-circular rings at one end of the extrusion roller body is arranged outside the rotating shaft, and a circular ring formed by two adjacent semi-circular rings at one end of the extrusion roller body is arranged outside the first flange and the first sealing ring;

[0016] Each semicircular ring is fixed with mounting blocks at both ends, and two adjacent mounting blocks are fixed by bolts and nuts, so as to facilitate the disassembly and assembly of the two semicircular rings.

[0017] Preferably, the extrusion roller body and the semi-ring body are both made of heat-conducting plates.

[0018] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0019] 1. When the extrusion roller rotates to squeeze the steel plate, the heating rod heats the steel plate, making it easier to be squeezed and deformed, which is conducive to the curling of the steel plate. When the extrusion roller rotates, the hollow shaft and the connecting ring are fixed, so the heating rod on the connecting ring does not rotate with the extrusion roller, avoiding the danger of twisting and breaking of the power cord of the heating rod, thereby improving safety;

[0020] 2. The outer roller body on the outside of the extrusion roller body directly contacts the steel plate to extrude the steel plate. When the outer roller body becomes concave and convex after long-term use, remove the bolts at the mounting block to facilitate the separation of the two semi-ring bodies, so as to facilitate the disassembly of the outer roller body and the replacement of the outer roller body when it is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is the overall structure diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the outer roller body of the utility model being opened;

[0024] Figure 3 This is a cross-sectional view of the extrusion roller body, rotating shaft and supporting assembly of the utility model;

[0025] Figure 4 It is a cross-sectional view of the support assembly of the utility model;

[0026] Figure 5 This is a structural diagram of the support assembly, heating rod and heating rod power line of the utility model;

[0027] Figure 6 This is a structural diagram of the outer roller body of the utility model.

[0028] Description of reference numerals:

[0029] 1 extrusion roller body, 2 rotating shaft;

[0030] 3 support assembly, 31 movable hollow shaft, 32 fixed hollow shaft, 33 connecting ring, 34 first flange, 35 first sealing ring, 36 second flange, 37 convex ring, 38 circular groove, 39 bearing, 310 connecting cylinder, 311 second sealing ring;

[0031] 4 Heating rod, 5 Heating rod power cord;

[0032] 6 outer roller body, 61 semi-ring body, 62 semi-circular ring, 63 mounting block. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] The utility model provides Figure 1-3 The welding pipe extrusion roller with heating function shown in the figure comprises an extrusion roller body 1, a rotating shaft 2 is fixed at one end of the extrusion roller body 1, the other end of the extrusion roller body 1 is open, and a support assembly 3 is arranged at the other end of the extrusion roller body 1, the extrusion roller body 1 is hollow inside and a heating rod 4 is arranged inside the extrusion roller body 1, and a heating rod power line 5 at one end of the heating rod 4 passes through the support assembly 3 and extends out of the end of the support assembly 3 away from the extrusion roller body 1;

[0035] like Figure 3-5 As shown, the support assembly 3 includes a movable hollow shaft 31 and a fixed hollow shaft 32. The movable hollow shaft 31 is arranged at the other end of the extrusion roller body 1. A first flange 34 is fixed to the outer wall of the movable hollow shaft 31. The first flange 34 is fixed to the other end of the extrusion roller body 1 by bolts, so as to facilitate the fixation of the movable hollow shaft 31 and the extrusion roller body 1.

[0036] Next, the fixed hollow shaft 32 is arranged at the end of the movable hollow shaft 31 away from the extrusion roller body 1, and the end of the movable hollow shaft 31 close to the fixed hollow shaft 32 is provided with a convex ring 37, and the convex ring 37 and the movable hollow shaft 31 are integrally formed, and the end of the fixed hollow shaft 32 close to the movable hollow shaft 31 is provided with a circular groove 38, and the convex ring 37 is arranged in the circular groove 38, and the convex ring 37 is rotatably connected with the circular groove 38 through a bearing 39, so that the movable hollow shaft 31 and the fixed hollow shaft 32 are rotatably connected;

[0037] A second flange 36 is also fixed to the outer wall of one end of the fixed hollow shaft 32 away from the movable hollow shaft 31, so as to facilitate fixing the fixed hollow shaft 32 on the extrusion machine body and fix the fixed hollow shaft 32 during processing;

[0038] Moreover, a connecting ring 33 is fixed to one end of the movable hollow shaft 31 close to the extrusion roller body 1, the connecting ring 33 is arranged inside the extrusion roller body 1, the heating rod 4 is fixed on the connecting ring 33, the heating rod power line 5 on the heating rod 4 passes through the connecting ring 33, the movable hollow shaft 31 and the fixed hollow shaft 32, a connecting cylinder 310 is fixed to one side of the connecting ring 33 close to the hollow shaft 31, and the connecting ring 33 and the connecting cylinder 310 are integrally formed, the end of the connecting cylinder 310 away from the connecting ring 33 passes through the movable hollow shaft 31 and the convex ring 37 and extends into the fixed hollow shaft 32, and the outer wall of the connecting cylinder 310 is fixedly connected to the inner wall of the fixed hollow shaft 32, so that the connecting ring 33 is rotatably connected to the movable hollow shaft 31 and fixedly connected to the fixed hollow shaft 32;

[0039] When in use, the heating rod 4 is placed into the extrusion roller body 1 from the opening of the extrusion roller body 1 until the connecting ring 33 is clamped in the extrusion roller body 1 and the first flange 34 on the movable hollow shaft 31 contacts the other end of the extrusion roller body 1, and then the first flange 34 is fixed to the other end of the extrusion roller body 1 by bolts, and then the second flange 36 is fixed to the extrusion body by bolts, so that the fixed hollow shaft 32 is fixed, and then the heating rod power line 5 extending from the fixed hollow shaft 32 is connected to the power supply;

[0040] During processing, the extrusion machine body drives the rotating shaft 2 to rotate and drives the extrusion roller body 1 to rotate to extrude the steel plate. At the same time, the heating rod 4 works to heat the extrusion roller body 1, and the heat is transferred to the steel plate, so that the steel plate is more easily extruded and deformed, which is conducive to the curling and forming of the steel plate, and improves the efficiency of subsequent processing into welded pipes;

[0041] When the extrusion roller body 1 rotates, the movable hollow shaft 31 is driven to rotate. At this time, the fixed hollow shaft 32 and the connecting ring 33 are fixed. That is to say, when the extrusion roller body 1 rotates to extrude the steel plate, the heating rod 4 on the connecting ring 33 is fixed and does not rotate with the extrusion roller body 1, thereby avoiding the danger of twisting and breaking of the heating rod power line 5 and improving safety.

[0042] In addition, a first sealing ring 35 is provided between the first flange 34 and the other end of the extrusion roller body 1, and a second sealing ring 311 is fixed to the outer wall of the connecting ring 33, and the second sealing ring 311 is in contact with the inner wall of the extrusion roller body 1 to seal the opening of the extrusion roller body 1 to prevent heat loss in the extrusion roller body 1.

[0043] like Figure 1 , 2 As shown in FIG. 6 , an outer roller body 6 is provided on the outside of the extrusion roller body 1, and the outer roller body 6 includes two semi-ring bodies 61, and the two semi-ring bodies 61 are sleeved on the outside of the extrusion roller body 1 and closely fit with the extrusion roller body 1. The extrusion roller body 1 and the semi-ring bodies 61 are both made of heat-conducting plates, and heat-conducting materials are selected to facilitate the heat transfer of the heating rod 4 to the steel plate, so as to curl the steel plate into shape;

[0044] Specifically, both ends of the semi-ring body 61 are integrally formed with semi-circular rings 62, and the circular ring formed by the two adjacent semi-circular rings 62 at one end of the extrusion roller body 1 is arranged on the outside of the rotating shaft 2, and the circular ring formed by the two adjacent semi-circular rings 62 at one end of the extrusion roller body 1 is arranged on the outside of the first flange 34 and the first sealing ring 35, and each semi-circular ring 62 is fixed with a mounting block 63 at both ends, and the two adjacent mounting blocks 63 are fixed by bolts and nuts, so as to facilitate the disassembly and assembly of the two semi-circular bodies 61.

[0045] When the extrusion roller body 1 extrude the steel plate, the outer roller body 6 on the outside of the extrusion roller body 1 directly contacts the steel plate. When the outer roller body 6 becomes concave and convex after long-term use, the bolts at the mounting block 63 are removed to facilitate the separation of the two semi-ring bodies 61, so as to facilitate the disassembly of the outer roller body 6, and then a new outer roller body 6 is installed on the extrusion roller body 1, so as to facilitate the disassembly, assembly and replacement of the outer roller body 6 when it is damaged.

[0046] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A welded pipe extrusion roller with a heating function, comprising an extrusion roller body (1), wherein a rotating shaft (2) is fixed to one end of the extrusion roller body (1), and characterized in that: The other end of the extrusion roller body (1) is open, the interior of the extrusion roller body (1) is hollow and a heating rod (4) is provided inside the extrusion roller body (1), and a heating rod power line (5) at one end of the heating rod (4) extends out of one end of the extrusion roller body (1); The other end of the extrusion roller body (1) is provided with a support assembly (3), and the support assembly (3) comprises a movable hollow shaft (31) and a fixed hollow shaft (32), the movable hollow shaft (31) is provided at the other end of the extrusion roller body (1) and is fixed to the extrusion roller body (1), and the fixed hollow shaft (32) is provided at an end of the movable hollow shaft (31) away from the extrusion roller body (1), and the movable hollow shaft (31) and the fixed hollow shaft (32) are rotatably connected; A connecting ring (33) is provided at one end of the movable hollow shaft (31) close to the extrusion roller body (1); the connecting ring (33) is rotatably connected to the movable hollow shaft (31) and fixedly connected to the fixed hollow shaft (32); the connecting ring (33) is arranged inside the extrusion roller body (1); the heating rod (4) is fixed on the connecting ring (33); and the heating rod power line (5) passes through the connecting ring (33), the movable hollow shaft (31) and the fixed hollow shaft (32); An outer roller body (6) is provided on the outer side of the extrusion roller body (1).

2. The welded pipe extrusion roller with heating function according to claim 1, characterized in that: A first flange (34) is fixed to the outer wall of the movable hollow shaft (31), the first flange (34) and the other end of the extrusion roller body (1) are fixed by bolts, and a first sealing ring (35) is provided between the first flange (34) and the other end of the extrusion roller body (1).

3. The welded pipe extrusion roller with heating function according to claim 1, characterized in that: A second flange (36) is fixed to the outer wall of one end of the fixed hollow shaft (32) away from the movable hollow shaft (31), so as to facilitate fixing the fixed hollow shaft (32) on the extrusion machine body.

4. The welded pipe extrusion roller with heating function according to claim 1, characterized in that: A convex ring (37) is provided at one end of the movable hollow shaft (31) close to the fixed hollow shaft (32), and the convex ring (37) and the movable hollow shaft (31) are integrally formed; a circular groove (38) is provided at one end of the fixed hollow shaft (32) close to the movable hollow shaft (31), and the convex ring (37) is arranged in the circular groove (38) and is rotatably connected to the circular groove (38) via a bearing (39).

5. The welded pipe extrusion roller with heating function according to claim 4, characterized in that: A connecting tube (310) is fixed to one side of the connecting ring (33) close to the hollow shaft (31), and the connecting ring (33) and the connecting tube (310) are integrally formed; one end of the connecting tube (310) away from the connecting ring (33) penetrates through the movable hollow shaft (31) and the convex ring (37) and extends into the interior of the fixed hollow shaft (32), and the outer wall of the connecting tube (310) is fixedly connected to the inner wall of the fixed hollow shaft (32).

6. The welded pipe extrusion roller with heating function according to claim 1, characterized in that: A second sealing ring (311) is fixed to the outer wall of the connecting ring (33), and the second sealing ring (311) is in contact with the inner wall of the extrusion roller body (1).

7. The welded pipe extrusion roller with heating function according to claim 2, characterized in that: The outer roller body (6) comprises two semi-ring bodies (61), and the two semi-ring bodies (61) are sleeved on the outside of the extrusion roller body (1) and are tightly fitted with the extrusion roller body (1); Both ends of the semi-ring body (61) are integrally formed with semi-circular rings (62); a circular ring formed by two adjacent semi-circular rings (62) at one end of the extrusion roller body (1) is arranged on the outside of the rotating shaft (2); and a circular ring formed by two adjacent semi-circular rings (62) at one end of the extrusion roller body (1) is arranged on the outside of the first flange (34) and the first sealing ring (35); Each semicircular ring (62) is fixed with mounting blocks (63) at both ends, and two adjacent mounting blocks (63) are fixed by bolts and nuts, so as to facilitate the disassembly and assembly of the two semicircular bodies (61).

8. The welded pipe extrusion roller with heating function according to claim 7, characterized in that: The extrusion roller body (1) and the semi-ring body (61) are both made of heat-conducting plates.

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