阅读说明：本技术 一种钢管高频感应焊接装置 (Steel pipe high-frequency induction welding device ) 是由 王永兴 于 2021-08-29 设计创作，主要内容包括：一种钢管高频感应焊接装置,属于高频焊接设备技术领域；通过设置垂直板,并在垂直板上设置感应棒,将感应板设置的位置在感应线圈中,使加热的范围更加集中,避免卷制后的钢带在离感应线圈较远时就提前进行加热,造成加热时间过长,导致钢带发生穿孔现象,通过设置预冷却水管,利用预冷却水管喷出温度较低的冷却水,预先将卷制后的钢带降至一个相对均衡的温度,实现感应线圈加热钢带的时间相对一致,通过设置后冷却水管,利用后冷却水管喷出温度较高的冷却水,将加热焊接后的钢管进行冷却,温度较高的冷却水可以防止钢管突然受冷收缩,通过设置两组压辊机构,通过压辊机构中的多个挤压轮对钢管进行固定,防止钢管在冷却过程中发生变形。(A high-frequency induction welding device for steel pipes belongs to the technical field of high-frequency welding equipment; by arranging the vertical plate and arranging the induction rod on the vertical plate, the position of the induction plate is arranged in the induction coil, the heating range is more concentrated, the phenomenon that the steel belt is perforated due to overlong heating time caused by the fact that the rolled steel belt is heated in advance when the steel belt is far away from the induction coil is avoided, by arranging the pre-cooling water pipe, the coiled steel strip is pre-cooled to a relatively balanced temperature by using the cooling water with lower temperature sprayed by the pre-cooling water pipe, the relatively consistent time of the induction coil for heating the steel strip is realized, by arranging the rear cooling water pipe, the steel pipe after heating and welding is cooled by using the cooling water sprayed by the rear cooling water pipe with higher temperature, the cooling water with higher temperature can prevent the steel pipe from suddenly contracting due to cold, through setting up two sets of compression roller mechanisms, fix the steel pipe through a plurality of extrusion wheel among the compression roller mechanism, prevent that the steel pipe from taking place to warp in the cooling process.)

1. The utility model provides a steel pipe high frequency induction welding device, includes mounting plate (1), its characterized in that: the upper surface middle position of the mounting bottom plate (1) is sequentially provided with a first guide roller group (2), a second guide roller group (3) and a third guide roller group (4), the first guide roller group (2) comprises two first bases (5) which are symmetrically arranged, the upper end of the first base (5) is rotatably connected with a guide roller (6), the guide roller (6) is obliquely arranged, the structures of the second guide roller group (3) and the third guide roller group (4) are consistent with the structure of the first guide roller group (2), the angles between the guide roller (6) and the mounting bottom plate (1) in the first guide roller group (2) to the third guide roller group (4) are sequentially increased, a first mounting bracket (7) is arranged on the mounting bottom plate (1) between the first guide roller group (2) and the second guide roller group (3), the upper end of the first mounting bracket (7) is longitudinally provided with two first frame plates (8), two all be equipped with a pinch roller (9) between the front and back both ends of first frame plate (8), two pinch rollers (9) all rotate to be connected on first frame plate (8) of both sides, the front side pinch roller (9) are equipped with the top of first guide roller group (2), the rear side pinch roller (9) are located the top of second guide roller group (3), be equipped with second installing support (10) between second guide roller group (3) and third guide roller group (4), a second frame plate (11) has been erect to the upper end of second installing support (10), the rear end of second frame plate (11) is equipped with an induction coil (12), the intermediate position of second installing support (10) is equipped with a vertical rod (13), the lower extreme of vertical rod (13) is connected with an induction rod (14), induction rod (14) are worn in induction coil (12).

2. The high-frequency induction welding device for the steel pipes as set forth in claim 1, wherein: two third mounting brackets (15) are arranged on a mounting bottom plate (1) at the rear side of the third guide roller group (4), a rack rod (16) is erected between the two third mounting brackets (15), a group of pre-cooling water pipes (17) are arranged at the front end of the rack rod (16), and a plurality of groups of post-cooling water pipes (18) are equidistantly arranged on the rack rod (16) between the two third mounting brackets (15).

3. The high-frequency induction welding device for the steel pipes as set forth in claim 2, wherein: two symmetry is equipped with two sets of compression roller mechanisms on mounting plate (1) between third installing support (15), pinch roller (9) mechanism includes second base (19) of being connected with mounting plate (1), sliding connection has four slide bars (20), four on second base (19) slide bar (20) rectangle array sets up, the inboard of second base (19) is equipped with a sliding plate (21), four equal fixed connection in the inner of slide bar (20) is on sliding plate (21).

4. The high-frequency induction welding device for the steel pipes as set forth in claim 3, wherein: a rotating handle (22) is connected to the second base (19) in the middle of the four sliding rods (20) in a threaded manner, and the inner end of the rotating handle (22) is rotatably connected to the sliding plate (21).

5. The high-frequency induction welding device for the steel pipes as set forth in claim 4, wherein: a plurality of groups of roller sets are arranged on the sliding plate (21) in parallel, each group of roller sets comprises a third base (23) connected with the sliding plate (21), and a squeezing wheel (24) is connected on the third base (23) in a rolling manner.

Technical Field

The invention belongs to the technical field of high-frequency welding equipment, and particularly relates to a high-frequency induction welding device for a steel pipe.

Background

High-frequency welding is a welding method in which high-frequency current is applied to a workpiece to generate resistance heat at a contact surface of the workpiece, and pressure is applied (or not applied) to form a connection between the metal of the workpiece. High frequency welding is different from resistance welding. During high-frequency welding, the welding current is only in parallel contact with the surface of a workpiece; the current for resistance welding flows perpendicular to the welding interface.

The existing high-frequency welding device for the steel pipe generally extrudes a steel belt into a cylinder shape through a roll shaft for welding, however, in the welding process, the initial temperature of the steel belt is changed after the steel belt is extruded in the high-frequency heating process, so that the heating time in the high-frequency heating process cannot be effectively controlled, and the roundness of the welded steel pipe is easy to change when the steel pipe is not cooled, so that the size of the steel pipe is changed, the required precision cannot be reached, and the material waste is caused.

Disclosure of Invention

The invention mainly solves the technical problems in the prior art and provides a high-frequency induction welding device for steel pipes.

The technical problem of the invention is mainly solved by the following technical scheme: a high-frequency induction welding device for steel pipes comprises an installation bottom plate, wherein a first guide roller group, a second guide roller group and a third guide roller group are sequentially arranged in the middle of the upper surface of the installation bottom plate, the first guide roller group comprises two first bases which are symmetrically arranged, a guide roller is rotatably connected to the upper end of each first base, the guide roller is obliquely arranged, the structures of the second guide roller group and the third guide roller group are consistent with the structure of the first guide roller group, the angles between the guide roller and the installation bottom plate in the first guide roller group to the third guide roller group are sequentially increased, a first installation support is arranged on the installation bottom plate between the first guide roller group and the second guide roller group, two first support plates are longitudinally arranged at the upper end of the first installation support, a pinch roller is arranged between the front end and the rear end of each first support plate, and the two pinch rollers are rotatably connected to the first support plates on two sides, the front side the pinch roller is equipped with the top of first guide roller group, the rear side the top of second guide roller group is located to the pinch roller, be equipped with the second installing support between second guide roller group and the third guide roller group, a second frame plate has been erect to the upper end of second installing support, the rear end of second frame plate is equipped with an induction coil, the intermediate position of second installing support is equipped with a vertical bar, the lower extreme of vertical bar is connected with an induction rod, the induction rod is worn in induction coil.

Preferably, two third mounting brackets are arranged on a mounting bottom plate on the rear side of the third guide roller group, a rack rod is erected between the two third mounting brackets, a group of pre-cooling water pipes are arranged at the front ends of the rack rods, and a plurality of groups of post-cooling water pipes are arranged on the rack rods between the two third mounting brackets at equal intervals.

Preferably, two sets of compression roller mechanisms are symmetrically arranged on the mounting base plate between the two third mounting brackets, each compression roller mechanism comprises a second base connected with the mounting base plate, the second base is connected with four sliding rods in a sliding mode, the four sliding rods are arranged in a rectangular array mode, a sliding plate is arranged on the inner side of the second base, and the inner ends of the four sliding rods are fixedly connected to the sliding plate.

Preferably, a rotating handle is connected to the second base at the middle position of the four sliding rods in a threaded manner, and the inner end of the rotating handle is rotatably connected to the sliding plate.

Preferably, a plurality of sets of rollers are arranged on the sliding plate in parallel, each set of rollers comprises a third base connected with the sliding plate, and the third base is connected with a squeezing wheel in a rolling manner.

The invention has the following beneficial effects: the vertical plate is arranged, the induction rod is arranged on the vertical plate, the position of the induction plate is arranged in the induction coil, the heating range is more concentrated, the rolled steel strip is prevented from being heated in advance when the rolled steel strip is far away from the induction coil, the heating time is too long, and the steel strip is perforated, the rolled steel strip is cooled to a relatively balanced temperature in advance by arranging the pre-cooling water pipe and spraying cooling water with lower temperature by the pre-cooling water pipe, the time for heating the steel strip by the induction coil is relatively consistent, the post-cooling water pipe is arranged, the steel tube after heating and welding is cooled by spraying cooling water with higher temperature by the post-cooling water pipe, the cooling water with higher temperature can prevent the steel tube from being cooled and contracted suddenly, and the heated steel tube is fixed by the plurality of extrusion wheels in the compression roller mechanisms by arranging the two sets of compression roller mechanisms, and the steel pipe is prevented from deforming in the cooling process.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the cutting and punching mechanism of the invention.

In the figure: 1. mounting a bottom plate; 2. a first guide roller set; 3. a second guide roller set; 4. a third guide roller set; 5. a first base; 6. a guide roller; 7. a first mounting bracket; 8. a first frame plate; 9. a pinch roller; 10. a second mounting bracket; 11. a second frame plate; 12. an induction coil; 13. a vertical rod; 14. an induction bar; 15. a third mounting bracket; 16. a frame bar; 17. a pre-cooling water pipe; 18. a post-cooling water pipe; 19. a second base; 20. a slide bar; 21. a sliding plate; 22. rotating the handle; 23. a third base; 24. and (4) extruding the wheel.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b): a high-frequency induction welding device for steel pipes is shown in figures 1-2 and comprises a mounting base plate 1, wherein a first guide roller group 2, a second guide roller group 3 and a third guide roller group 4 are sequentially arranged at the middle position of the upper surface of the mounting base plate 1, the first guide roller group 2 comprises two first bases 5 which are symmetrically arranged, the upper end of each first base 5 is rotatably connected with a guide roller 6, the guide rollers 6 are obliquely arranged, the structures of the second guide roller group 3 and the third guide roller group 4 are consistent with the structure of the first guide roller group 2, the angles between the guide rollers 6 and the mounting base plate 1 in the first guide roller group 2 to the third guide roller group 4 are sequentially increased, a first mounting bracket 7 is arranged on the mounting base plate 1 between the first guide roller group 2 and the second guide roller group 3, a first frame plate 8 is longitudinally arranged at the upper end of the first mounting bracket 7, a pinch roller 9 is arranged between the front end and the rear end of each first frame plate 8, the two pinch rollers 9 are rotatably connected to the first frame plates 8 on the two sides, the pinch roller 9 on the front side is arranged above the first guide roller group 2, the pinch roller 9 on the rear side is arranged above the second guide roller group 3, a second mounting bracket 10 is arranged between the second guide roller group 3 and the third guide roller group 4, a second frame plate 11 is erected at the upper end of the second mounting bracket 10, an induction coil 12 is arranged at the rear end of the second frame plate 11, a vertical rod 13 is arranged in the middle of the second mounting bracket 10, the lower end of the vertical rod 13 is connected with an induction rod 14, and the induction rod 14 penetrates through the induction coil 12; two third mounting brackets 15 are arranged on the mounting bottom plate 1 at the rear side of the third guide roller group 4, a rack bar 16 is erected between the two third mounting brackets 15, a group of pre-cooling water pipes 17 are arranged at the front ends of the rack bars 16, and a plurality of groups of post-cooling water pipes 18 are equidistantly arranged on the rack bars 16 between the two third mounting brackets 15.

Two groups of compression roller mechanisms are symmetrically arranged on the mounting base plate 1 between the two third mounting brackets 15, the compression roller 9 mechanism comprises a second base 19 connected with the mounting base plate 1, the second base 19 is connected with four sliding rods 20 in a sliding manner, the four sliding rods 20 are arranged in a rectangular array, a sliding plate 21 is arranged on the inner side of the second base 19, and the inner ends of the four sliding rods 20 are fixedly connected to the sliding plate 21; a rotating handle 22 is connected to the second base 19 at the middle position of the four sliding rods 20 through threads, and the inner end of the rotating handle 22 is rotatably connected to the sliding plate 21; a plurality of sets of roller sets are arranged on the sliding plate 21 in parallel, each set of roller set comprises a third base 23 connected with the sliding plate 21, and a squeezing wheel 24 is connected on the third base 23 in a rolling manner.

The principle of the invention is as follows: firstly, a steel belt is led in from a first guide roller group 2, two guide rollers 6 in the first guide roller group 2 are provided with pinch rollers 9 on the upper side, the steel belt is preliminarily rolled, the steel belt continuously moves backwards, two guide rollers 6 in a second guide roller group 3 are matched with the pinch rollers 9 on the upper side, the steel belt is continuously rolled, when the steel belt moves to a third guide roller group 4, two side edges of the steel belt are gradually folded, the steel belt is preliminarily cooled through a precooling water pipe 17, the steel belt is heated through an induction rod 14 and an induction coil 12, the steel belt continuously moves into two groups of press roller mechanisms, the heated steel belt is extruded and folded by two groups of roller groups at the front end to form a steel pipe, the steel pipe is continuously fixed by utilizing the two groups of roller groups at the rear side, cooling water with higher temperature is sprayed out through a aftercooling water pipe 18, the steel pipe is cooled, and the manufacturing of the steel pipe is completed.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.