Alignment welding device for outer protective pipe

Abstract

The utility model relates to the field of welding devices, in particular to an outer protection pipe alignment welding device which comprises a welding machine, a heating ring, a cross beam, a vertical frame, a sliding rail, a sliding seat, a bracket assembly and a guide assembly. Heating rings for heating the inner walls and the outer walls of the two pipe fittings respectively are installed on a machine head of the welding machine in a bilateral symmetry mode, the width of the heating rings is 3 cm, a bracket assembly is installed on the sliding base, and a guide assembly which is located above the heating rings and matched with the outer protection pipe is installed on the bracket assembly; the guide assembly matched with the outer protective pipe in pipe diameter is arranged on an original welding machine, after a pipe fitting is heated, the pipe fitting can be directly lifted up to be subjected to alignment welding along the guide assembly, compared with a traditional suspended manual alignment mode, alignment is more accurate, alignment deviation is not prone to occurring, welding quality is guaranteed, and production efficiency is improved. The problem that butt joint dislocation is easily caused by hand shaking when the cable outer protection pipe is welded and aligned, and the welding quality is affected is solved.

Description

Technical Field

[0001] The utility model relates to the field of welding devices, in particular to an outer protective tube alignment welding device. Background Art

[0002] Cable outer tubes are materials frequently used for indoor and outdoor installation of cables, either individually or in bundles. Their main purpose is to protect the cable structure and prevent the cable sheath from being contaminated or damaged. To accommodate the bending of cables during installation, the outer tube itself requires a certain degree of flexibility and space for bending and deformation. Therefore, cable outer tubes are often made of PE or other plastic materials.

[0003] The length of a single outer protective tube is 6m, while the cable is relatively long. Therefore, the outer protective tubes need to be welded and fixed in pairs using a hot melt machine to extend the length of the tube and fully cover the wrapped cable. However, after using the welding machine to heat the two ends of the tube, the two tubes need to be quickly manually docked. Manual docking is very unstable and can easily cause the two pipes to be misaligned due to shaking hands. Once the hot-melted pipe ends come into contact, they will stick together. To readjust the alignment, the two pipe ends need to be pulled apart first. This process causes the welding point of the pipe ends to deform. Moreover, if the re-alignment is repeated too many times or for too long, the softened pipe ends will cool and harden, greatly affecting the welding quality.

[0004] Therefore, in order to solve the problem that the cable outer protective tube is easily misaligned due to the shaking of human hands during welding, which affects the welding quality, a welding machine with an auxiliary alignment device can be designed to accurately weld the outer protective tubes together through the pipe guiding structure. Utility Model Content

[0005] In order to overcome the problem that the cable outer protective tube is easily misaligned due to shaking of the hands during welding, which affects the welding quality.

[0006] The technical solution of the utility model is: a device for counter-welding of outer protective tubes, comprising a welding machine, a heating ring, a crossbeam, a stand, a slide rail, a slide seat, a bracket assembly, and a guide assembly; heating rings for respectively heating the inner and outer walls of two pipes are symmetrically installed on the left and right sides of the welding machine head, the welding machine head has two groups of crossbeams and are arranged parallel up and down on the upper and lower sides of the welding machine head, the stand has two groups and are respectively fixedly connected between the left ends and the right ends of the two groups of crossbeams, screw holes are provided on the crossbeams and the welding machine head, bolts are passed through the screw holes to tighten the crossbeams and the welding machine head, a slide rail composed of two U-shaped channel steels is fixedly connected to the side of the stand facing away from the welding machine head, a slide seat is slidably connected in the slide rail, a bracket assembly is installed on the slide seat, and a guide assembly is installed on the bracket assembly which is above the heating ring and adapted to the outer protective tube.

[0007] Preferably, the ends of the two outer protective tubes are respectively sleeved on the heating rings on both sides, one heating ring heats the inner wall of the outer protective tube, and the other heating ring heats the outer wall of the other outer protective tube. After the ends of the outer protective tubes are softened, the outer protective tubes are pulled out from the heating rings, and then pulled upward into the guide assembly. The two outer protective tubes move horizontally toward each other along the guide assembly until the two tube ends are pressed against each other and sleeved together. After waiting for a period of time, the welding is completed after the tube ends cool and solidify.

[0008] Preferably, 5-8 pin holes are longitudinally opened on the stand, and holes with the same diameter as the pin holes are opened on the slide. Spring pins are inserted into the holes and corresponding pin holes to lock the slide on the stand. The slide slides up and down along the slide rail until the guide assembly is at a suitable height, and then the spring pin is released. Through the elastic contraction of the spring, the pin is pulled into the hole and the pin hole on the stand to completely fix the slide and the stand. When you want to adjust the guide assembly, pull out the spring pin and slide the slide up and down.

[0009] Preferably, a lamp tube and an arc-shaped protective cover are installed between the two bracket assemblies. The protective cover is a transparent arc-shaped plastic plate and is located on one side of the guide assembly. The lamp tube is arranged at the inner arc of the protective cover. The lamp tube is powered on and lit at night, and emits light through the protective cover to the side of the guide assembly, which can provide lighting during the heating of the outer protective tube and the alignment welding process.

[0010] Preferably, the bracket assembly includes a horizontal part No. 1 and a vertical part No. 1; the horizontal part No. 1 is fixedly connected to the slide and has a length of 3-4 cm, the vertical part No. 1 is fixedly connected to the upper end of the horizontal part No. 1 in an integral manner, and the guide assembly is fixedly installed on the side of the vertical part No. 1 facing the heating ring, and the length of the horizontal part No. 1 is controlled to be 3-4 cm, so that the entire bracket assembly is smaller in size, and the guide assembly installed thereon is closer to the head of the welding machine, which is more convenient to use and carry.

[0011] Preferably, the guide assembly includes a No. 1 guide ring and a No. 1 inclined plate; the No. 1 guide ring is a ring structure with an opening on the edge and the opening is facing away from the side of the bracket assembly. The outer wall of the No. 1 guide ring is fixedly connected to the No. 1 vertical part. No. 1 inclined plates with an eight-shaped structure are provided at both ends of the opening of the No. 1 guide ring. The spacing between the two No. 1 guide rings is 8-10 cm. The No. 1 guide ring is installed based on a small-sized bracket assembly. Because the heating length of the heating ring on the outer protective tube is 3 cm, and the thickness of the welding machine head is 2 cm, in order to ensure that the two outer protective tubes can slide smoothly from the opening of the No. 1 guide ring without touching the softened pipe ends, the spacing between the two No. 1 guide rings is ensured to be between 8-10 cm, so that when the two outer protective tubes enter the No. 1 guide ring, the guide ring covers the part of the outer protective tube that has not been heated, and the pipe ends of the two outer protective tubes maintain a certain distance. The setting of the No. 1 inclined plate makes it easier for the outer protective tube to slide and be pressed into the No. 1 guide ring.

[0012] Preferably, the bracket assembly includes a No. 2 horizontal part and a No. 2 vertical part; the No. 2 horizontal part is fixedly connected to the slide and has a length of 10-11 cm, the No. 2 vertical part is fixedly connected to the upper end of the No. 2 horizontal part in an integral manner, and the guide assembly is fixedly installed on the side of the No. 2 vertical part facing the heating ring, controlling the length of the No. 2 horizontal part to be 10-11 cm. The entire bracket assembly is larger in size. Similarly, the guide assembly installed thereon is further away from the head of the welding machine. After the outer protective tube is heated and separated from the heating ring, it can be directly pulled upward into the guide assembly.

[0013] Preferably, the guide assembly includes a No. 2 guide ring and a No. 2 inclined plate; the No. 2 guide ring is a ring structure with an opening at the lower edge and the opening is above the heating ring, the outer wall of the No. 2 guide ring is fixedly connected to the No. 2 vertical portion, and No. 2 inclined plates with an eight-shaped structure are provided at both ends of the opening of the No. 2 guide ring. The spacing between the two No. 2 guide rings is 15-17 cm. The No. 2 guide ring is installed by relying on a large-sized bracket assembly. Because the heating length of the outer protective tube by the heating ring is 3 cm, and the thickness of the head of the welding machine is 2 cm, the outer protective tube is pulled from the heating ring. After coming out, in order to ensure that the heated parts of the ends of the two outer protective tubes are not under the No. 2 guide ring, so as to avoid the heated parts touching the No. 2 guide ring and causing deformation when pulling upwards, the distance between the two No. 2 guide rings is ensured to be between 15-17cm. When the two outer protective tubes enter the No. 2 guide ring, the guide ring covers the unheated part of the outer protective tubes, and the ends of the two outer protective tubes maintain a larger distance, which is less likely to cause contact and deformation when entering the No. 2 guide ring. The setting of the No. 2 inclined plate makes it easier for the outer protective tubes to slide and be pressed into the No. 1 guide ring.

[0014] Beneficial effects of the utility model:

[0015] 1. By setting a guide component that matches the diameter of the outer protective pipe on the original welding machine, the pipe can be directly lifted and welded along the guide component after the pipe is heated. Compared with the traditional suspended manual alignment method, the alignment is more accurate and less likely to deviate, thus ensuring the welding quality;

[0016] 2. The light tube and protective cover structure between the two bracket components can provide auxiliary lighting for the alignment part of the outer protective tube during welding operations at night, reducing the probability of alignment failure;

[0017] 3. By sliding the slide seat longitudinally along the slide rail, the distance between the guide assembly and the welding machine head can be adjusted according to the needs of use, which makes it convenient for the user to remove the outer protective tube from the heating ring and quickly enter the guide assembly to prepare for alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the overall assembly three-dimensional structure of the first embodiment of the outer protective tube alignment welding device of the present invention;

[0019] Figure 2 Shown is a three-dimensional structural diagram of the first embodiment of the outer protective tube alignment welding device of the present invention;

[0020] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the bracket assembly and the guide assembly of the first embodiment of the outer protective tube alignment welding device of the present invention;

[0021] Figure 4 Shown is a schematic diagram of the overall assembly three-dimensional structure of the second embodiment of the outer protective tube alignment welding device of the present utility model;

[0022] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the second embodiment of the outer protective tube alignment welding device of the present invention;

[0023] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the bracket assembly and the guide assembly of the second embodiment of the outer protective tube alignment welding device of the present invention;

[0024] Figure 7 Shown is a schematic diagram of the three-dimensional structure of the outer protective tube alignment welding device welding machine, crossbeam and vertical frame installation of the utility model;

[0025] Figure 8 Shown is a schematic diagram of the three-dimensional structure of the crossbeam and vertical frame installation of the outer protective tube positioning welding device of the present invention.

[0026] Explanation of the accompanying symbols: 1. Welding machine; 2. Heating ring; 3. Crossbeam; 4. Stand; 5. Slide rail; 6. Slide seat; 9. Pin hole; 10. Spring pin; 11. Lamp tube; 12. Protective cover; 701. Horizontal part No. 1; 702. Vertical part No. 1; 703. Horizontal part No. 2; 704. Vertical part No. 2; 801. Guide ring No. 1; 802. Inclined plate No. 1; 803. Guide ring No. 2; 804. Inclined plate No. 2. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] See also Figures 1-8The utility model provides an outer protective pipe alignment welding device, including a welding machine 1, a heating ring 2, a crossbeam 3, a stand 4, a slide rail 5, a slide seat 6, a bracket assembly 7, and a guide assembly 8; the heating rings 2 for heating the inner and outer walls of the two pipes are symmetrically installed on the head of the welding machine 1, the thickness of the head of the welding machine 1 is 2 cm, the width of the heating ring 2 is 3 cm, the crossbeam 3 has two groups and is arranged parallel to each other on the upper and lower sides of the head of the welding machine 1, the stand 4 has two groups and is fixedly connected between the left ends and the right ends of the two groups of crossbeams 3, the crossbeam 3 and the head of the welding machine 1 are both provided with screw holes, the bolts are inserted into the screw holes to tighten the crossbeam 3 and the head of the welding machine 1, and the stand 4 is facing away from the side of the head of the welding machine 1. A slide rail 5 composed of two U-shaped channel steels is fixedly connected, and a slide seat 6 is slidably connected inside the slide rail 5. A bracket assembly 7 is installed on the slide seat 6. A guide assembly 8 is installed on the bracket assembly 7, which is located above the heating ring 2 and adapted to the outer protective tube. The pipe ends of the two outer protective tubes are respectively sleeved on the heating rings 2 on both sides. One heating ring 2 heats the inner wall of the outer protective tube, and the other heating ring 2 heats the outer wall of the other outer protective tube. After the pipe ends of the outer protective tubes are softened, the outer protective tubes are pulled out from the heating ring 2, and then pulled upward into the guide assembly 8. The two outer protective tubes move horizontally toward each other along the guide assembly 8 until the two pipe ends are pressed against each other and sleeved together. After waiting for a period of time, the pipe ends are cooled and solidified to complete the welding.

[0029] See also Figure 2-Figure 3 、 Figure 5-Figure 8 , 5-8 pin holes 9 are longitudinally opened on the stand 4, and holes with the same diameter as the pin holes 9 are opened on the slide 6. Spring pins 10 that lock the slide 6 on the stand 4 are inserted into the holes and the corresponding pin holes 9. The slide 6 slides up and down along the slide rail 5 until the guide assembly 8 is at a suitable height, and then the spring pins 10 are released. The elastic contraction of the spring pulls the pins into the holes and the pin holes 9 on the stand 4 to completely fix the slide 6 and the stand 4. When you want to adjust the guide assembly 8, pull out the spring pins 10 and slide the slide 6 up and down. A lamp tube 11 and a protective cover 12 of an arc structure are installed between the two bracket assemblies 7. The protective cover 12 is a transparent arc-shaped plastic plate and is located on one side of the guide assembly 8. The lamp tube 11 is arranged at the inner arc of the protective cover 12. The lamp tube 11 is powered on and lights up at night, and emits light through the protective cover 12 to one side of the guide assembly 8, which can provide lighting during the heating of the outer protective tube and the alignment welding process.

[0030] Example 1: Please refer to Figure 1-Figure 3, in this embodiment, the bracket assembly 7 includes a horizontal portion 701 and a vertical portion 702; the horizontal portion 701 is fixedly connected to the slide 6 and has a length of 3-4 cm, the vertical portion 702 is fixedly connected to the upper end of the horizontal portion 701 in an integrated manner, and the guide assembly 8 is fixedly installed on the side of the vertical portion 702 facing the heating ring 2, and the length of the horizontal portion 701 is controlled to be 3-4 cm, so that the entire bracket assembly 7 is smaller in size, and the guide assembly 8 installed thereon is closer to the head of the welding machine 1, which is more convenient to use and carry. The guide assembly 8 includes a guide ring 801 and a ramp 802; the guide ring 801 is a ring structure with an opening on the edge and the opening is facing away from the side of the bracket assembly 7, and the outer wall of the guide ring 801 is fixedly connected to the vertical portion 702 Next, at both ends of the opening of the No. 1 guide ring 801, there are provided No. 1 inclined plates 802 in an eight-shaped structure. The distance between the two No. 1 guide rings 801 is 8-10 cm. The No. 1 guide ring 801 is installed by relying on the small-sized bracket assembly 7. Because the heating length of the outer protective tube by the heating ring 2 is 3 cm, and the thickness of the head of the welding machine 1 is 2 cm, in order to ensure that the two outer protective tubes can slide smoothly from the opening of the No. 1 guide ring 801 without touching the softened tube ends, the distance between the two No. 1 guide rings 801 is ensured to be between 8-10 cm. When the two outer protective tubes enter the No. 1 guide ring 801, the guide ring covers the part of the outer protective tube that has not been heated, and the tube ends of the two outer protective tubes maintain a certain distance. The provision of the No. 1 inclined plate 802 makes it easier for the outer protective tubes to slide and be pressed into the No. 1 guide ring 801.

[0031] Example 2: Please refer to Figure 4-Figure 6, in this embodiment, the bracket assembly 7 includes a No. 2 horizontal portion 703 and a No. 2 vertical portion 704; the No. 2 horizontal portion 703 is fixedly connected to the slide 6 and has a length of 10-11 cm, and the No. 2 vertical portion 704 is fixedly connected to the upper end of the No. 2 horizontal portion 703 as a whole, and the guide assembly 8 is fixedly installed on the side of the No. 2 vertical portion 704 facing the heating ring 2, controlling the length of the No. 2 horizontal portion 703 to be 10-11 cm, and the entire bracket assembly 7 is larger in size. Similarly, the guide assembly 8 installed thereon is further away from the head of the welding machine 1. After the outer protective tube is heated and separated from the heating ring 2, it can be directly pulled upward into the guide assembly 8. The guide assembly 8 includes a No. 2 guide ring 803 and a No. 2 inclined plate 804; the No. 2 guide ring 803 is an annular structure with an opening at the lower edge and the opening is above the heating ring 2. The outer wall of the No. 2 guide ring 803 is fixedly connected to the No. 2 vertical portion 704, and the two openings of the No. 2 guide ring 803 are fixedly connected. The end is provided with a second inclined plate 804 in an eight-shaped structure. The distance between the two second guide rings 803 is 15-17 cm. The second guide ring 803 is installed by relying on the large-sized bracket assembly 7. Because the heating length of the outer protective tube by the heating ring 2 is 3 cm, and the thickness of the head of the welding machine 1 is 2 cm, after the outer protective tube is pulled out from the heating ring 2, in order to ensure that the heated parts of the tube ends of the two outer protective tubes are not below the second guide ring 803, so as to avoid the heated parts touching the second guide ring 803 and causing deformation when pulling upward, the distance between the two second guide rings 803 is ensured to be between 15-17 cm. When the two outer protective tubes enter the second guide ring 803, the guide ring covers the part of the outer protective tube that has not been heated. In addition, the tube ends of the two outer protective tubes maintain a larger distance, which is less likely to cause contact and deformation when entering the second guide ring 803. The provision of the second inclined plate 804 makes it easier for the outer protective tube to slide and press into the first guide ring 801.

[0032] Through the above steps, by setting a guide component 8 that is adapted to the diameter of the outer protective tube on the original welding machine 1, the pipe can be directly lifted and welded along the guide component 8 after the pipe is heated. Compared with the traditional suspended manual alignment method, the alignment is more accurate and less likely to deviate from the alignment, thereby ensuring the welding quality, thereby solving the problem that the cable outer protective tube is easily misaligned due to the shaking of the human hand during welding and alignment, thereby affecting the welding quality.

Claims

1. An outer protective tube alignment welding device, comprising a welding machine (1) and a heating ring (2); characterized in that: The invention also includes a crossbeam (3), a stand (4), a slide rail (5), a slide seat (6), a bracket assembly and a guide assembly; heating rings (2) for respectively heating the inner and outer walls of two pipes are symmetrically installed on the head of the welding machine (1); the thickness of the head of the welding machine (1) is 2 cm, the width of the heating ring (2) is 3 cm, the crossbeam (3) has two groups and is arranged parallel to each other on the upper and lower sides of the head of the welding machine (1); the stand (4) has two groups and is respectively fixedly connected to the left ends of the two groups of crossbeams (3) Between the right end and the right end, screw holes are provided on the crossbeam (3) and the head of the welding machine (1), and bolts are inserted into the screw holes to tighten the crossbeam (3) and the head of the welding machine (1). A slide rail (5) composed of two U-shaped channel steels is fixedly connected to the side of the stand (4) facing away from the head of the welding machine (1), and a slide seat (6) is slidably connected in the slide rail (5). A bracket assembly is installed on the slide seat (6), and a guide assembly is installed on the bracket assembly, which is located above the heating ring (2) and adapted to the outer protective tube.

2. The outer protective tube alignment welding device according to claim 1, characterized in that: The stand (4) is provided with 5-8 pin holes (9) in the longitudinal direction, and the slide (6) is provided with holes with the same diameter as the pin holes (9). The holes and the corresponding pin holes (9) are plugged with spring pins (10) for locking the slide (6) on the stand (4).

3. The outer protective tube alignment welding device according to claim 1, characterized in that: A lamp tube (11) and an arc-shaped protective cover (12) are installed between the two bracket assemblies. The protective cover (12) is a transparent arc-shaped plastic plate and is located on one side of the guide assembly (8). The lamp tube (11) is arranged at the inner arc of the protective cover (12).

4. The outer protective tube alignment welding device according to claim 1, characterized in that: The bracket assembly comprises a horizontal portion (701) and a vertical portion (702); the horizontal portion (701) is fixedly connected to the slide (6) and has a length of 3-4 cm, the vertical portion (702) is integrally fixedly connected to the upper end of the horizontal portion (701), and the guide assembly (8) is fixedly mounted on the side of the vertical portion (702) facing the heating ring (2).

5. The outer protective tube alignment welding device according to claim 4, characterized in that: The guide assembly comprises a No. 1 guide ring (801) and a No. 1 inclined plate (802); the No. 1 guide ring (801) is a ring structure with an opening at the edge, and the opening faces away from the side of the bracket assembly; the outer wall of the No. 1 guide ring (801) is fixedly connected to the No. 1 vertical portion (702); the No. 1 inclined plate (802) in an eight-shaped structure is provided at both ends of the opening of the No. 1 guide ring (801); and the distance between the two No. 1 guide rings (801) is 8-10 cm.

6. The outer protective tube alignment welding device according to claim 1, characterized in that: The bracket assembly includes a second horizontal portion (703) and a second vertical portion (704); the second horizontal portion (703) is fixedly connected to the slide (6) and has a length of 10-11 cm, the second vertical portion (704) is integrally fixedly connected to the upper end of the second horizontal portion (703), and the guide assembly (8) is fixedly installed on the side of the second vertical portion (704) facing the heating ring (2).

7. The outer protective tube alignment welding device according to claim 6, characterized in that: The guide assembly comprises a No. 2 guide ring (803) and a No. 2 inclined plate (804); the No. 2 guide ring (803) is a ring structure with an opening at the lower edge, and the opening is located above the heating ring (2); the outer wall of the No. 2 guide ring (803) is fixedly connected to the No. 2 vertical portion (704); No. 2 inclined plates (804) in an eight-shaped structure are provided at both ends of the opening of the No. 2 guide ring (803); and the distance between the two No. 2 guide rings (803) is 15-17 cm.

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