Pressure head mechanism of high-frequency longitudinal welded pipe unit

Abstract

The utility model belongs to the field of pressure head mechanisms, and particularly relates to a pressure head mechanism of a high-frequency longitudinal welded pipe unit, which comprises a base, one side of the base is fixedly connected with a material guide mechanism, one side of the base is fixedly connected with a pressing mechanism, and one side of the base is provided with a forming mechanism. The forming mechanism is fixedly communicated with the heat supply equipment through the connecting pipe, heat generated by the heat supply equipment is conveyed into the heat storage cavity through the heat supply pipe when steel is conveyed to the position above the lower die base, a heat conduction plate can be made of copper metal materials and the like, the leading-in efficiency is improved, the heat heats the steel through a second through hole, and the forming efficiency is improved. The internal temperature of the steel plate can be uniformly distributed, the problems of stress, deformation and the like caused by temperature change in the machining or welding process are reduced, the right triangle reinforcing plate can improve the strength of the lower die base on one hand, heat can be intensively guided out through the inclined plane on the other hand, and the flowing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pressure head mechanism field, specifically a kind of high-frequency straight seam welded pipe unit pressure head mechanism. BACKGROUND

[0002] High-frequency straight seam welded pipe unit is mainly composed of uncoiler, strip steel flattening device, shearing butt welding machine, high-frequency welding device, extrusion device, cooling device, sizing device, flying saw cutting device and so on, these devices work cooperatively, complete the entire production process from uncoiling, flattening, shearing butt welding, high-frequency welding, extrusion forming, cooling sizing to cutting.

[0003] Pressure head mechanism is a key component in high-frequency straight seam welded pipe unit, it is mainly responsible for the steel strip or steel plate is pressed into tubular, prepare for subsequent welding process, however, most of the pressure head mechanism in high-frequency straight seam welded pipe unit adopts direct pressing forming method to steel, inconvenient for hot-pressing processing to steel, and cold-pressing processing leads to the increase of surface roughness, and there are stress concentration and other problems in the interior, therefore, for the steel plate product with high surface quality and internal quality, if hot-pressing processing cannot be carried out, the processing quality will be affected. SUMMARY

[0004] In order to make up for the deficiency of prior art, however, most of the pressure head mechanism in high-frequency straight seam welded pipe unit adopts direct pressing forming method to steel, inconvenient for hot-pressing processing to steel, and cold-pressing processing leads to the increase of surface roughness, and there are stress concentration and other problems in the interior, the utility model provides a kind of high-frequency straight seam welded pipe unit pressure head mechanism.

[0005] The utility model discloses a technical scheme that solves its technical problem is as follows: a kind of high-frequency straight seam welded pipe unit pressure head mechanism, including base, the side fixed connection of the base is connected with guide mechanism, the side fixed connection of the base is connected with lower pressure mechanism, the side of the base is provided with forming mechanism;

[0006] The forming mechanism includes lower die holder, the bottom fixed connection of the lower die holder is in the side of base, the top of the lower die holder is equipped with forming groove, the inside of the lower die holder is equipped with heat storage cavity, the inner wall of the heat storage cavity is fixedly connected with heat conduction plate, the side fixed connection of the heat conduction plate is with reinforcing plate, the shape of the reinforcing plate is right triangle setting, the side fixed connection of the reinforcing plate is in the inner wall of heat storage cavity, the inner wall of the forming groove is equipped with second through-hole, the side fixed communication of the lower die holder is with connecting pipe.

[0007] As preferred, the side of the base is provided with heat supply equipment, the output end of the heat supply equipment is fixedly connected with heat supply pipe, one end of the heat supply pipe is fixedly communicated with one end of connecting pipe.

[0008] As preferred, the downward pressing mechanism comprises a guide column, one end of the guide column is fixedly connected to one side of the base, and the surface of the guide column is slidably connected with a transmission plate, one side of the transmission plate is fixedly connected with a pressing plate.

[0009] As preferred, one end of the guide column is fixedly connected with a top plate, one side of the top plate is fixedly installed with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a connecting block, one side of the connecting block is rotatably connected with a first connecting rod, one side of the top plate is fixedly connected with a first connecting seat, the inner cavity of the first connecting seat is rotatably connected with a second connecting rod, the inner cavity of the first connecting rod is rotatably connected with the surface of the second connecting rod, one side of the transmission plate is fixedly connected with a second connecting seat, the inner cavity of the second connecting seat is rotatably connected with a third connecting rod, and the surface of the third connecting rod is rotatably connected to the inner cavity of the second connecting rod.

[0010] As preferred, the material guiding mechanism comprises a support, one side of the support is fixedly connected to one side of the base, the inner wall of the support is slidably connected with a sliding block, and the inner cavity of the sliding block is rotatably connected with a material guiding roller.

[0011] As preferred, the inside of the material guiding roller is provided with a preheating cavity, the inner wall of the preheating cavity is fixedly connected with a supporting rod, the surface of the supporting rod is sleeved with an electric heating wire, one end of the electric heating wire is fixedly connected to the inner wall of the preheating cavity, and the surface of the material guiding roller is provided with a first through hole.

[0012] As preferred, the inner cavity of the support is rotatably connected with a threaded rod, and the surface of the threaded rod is threadedly connected with the inner cavity of the sliding block.

[0013] As preferred, the inner wall of the support is fixedly connected with a guide rod, and the surface of the guide rod is slidably connected with the inner cavity of the sliding block.

[0014] The utility model discloses the advantages are as follows:

[0015] The utility model discloses a forming mechanism, and the forming mechanism is fixedly connected with the heat supply equipment through the connecting pipe, when the steel material is transported to the top of the lower mould base, the heat generated by the heat supply equipment is transported to the heat storage cavity through the heat supply pipe, the heat conducting plate can adopt copper metal material etc., improves the efficiency of import, and the heat is heated to the steel material through the second through -hole, can make the internal temperature of steel plate even distribution, reduces the stress and deformation etc. of the problem produced because of temperature change in the processing or welding process, the reinforcing plate of right triangle can improve the strength of lower mould base on one hand, on the other hand, the heat can be concentrated and exported through the inclined plane, improves the flow efficiency, reaches after heating through the lower pressure mechanism to the steel material and is pressed, and the steel material can form the arc of the required welded pipe according to the arc of the forming groove, thereby the hot pressing of steel plate helps to keep the size and shape of steel plate stable, thereby improves the precision and quality effect of forming, solves the method of the pressure head mechanism of most high -frequency straight -welded pipe unit to the steel material and adopts direct pressing forming, and it is inconvenient to hot press the steel material, and cold pressing processing leads to the increase of surface roughness, and there are stress concentration etc. inside. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is the overall mechanism three-dimensional schematic view of the utility model;

[0018] Figure 2 It is the lower mould base structure schematic view of the utility model;

[0019] Figure 3 It is the forming mechanism and heat supply equipment connection schematic view of the utility model;

[0020] Figure 4 It is the material guiding mechanism three-dimensional schematic view of the utility model;

[0021] Figure 5 It is the material guiding roller internal structure schematic view of the utility model.

[0022] In the figure: 1, base; 2, material guiding mechanism; 201, support; 202, sliding block; 203, material guiding roller; 204, preheating cavity; 205, supporting rod; 206, electric heating wire; 207, threaded rod; 208, guide rod; 209, first through hole; 3, pressing mechanism; 301, guide column; 302, transmission plate; 303, pressing plate; 304, top plate; 305, hydraulic cylinder; 306, connecting block; 307, first connecting rod; 308, first connecting seat; 309, second connecting rod; 310, second connecting seat; 311, third connecting rod; 4, forming mechanism; 401, lower die seat; 402, forming groove; 403, heat storage cavity; 404, heat conducting plate; 405, reinforcing plate; 406, second through hole; 407, connecting pipe; 5, heat supply equipment; 6, heat supply pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The drawings will be described below in conjunction with the embodiments of the utility model. Figures 1-5 The application will be further described in detail,

[0025] The embodiments of the application disclose a high-frequency straight seam welded pipe unit pressing mechanism. Referring to Figure 1 and Figure 2 A high-frequency straight seam welded pipe unit pressing mechanism, comprising a base 1, one side of the base 1 is fixedly connected with a material guiding mechanism 2, one side of the base 1 is fixedly connected with a pressing mechanism 3, and one side of the base 1 is provided with a forming mechanism 4.

[0026] The forming mechanism 4 comprises a lower die seat 401, the bottom of the lower die seat 401 is fixedly connected to one side of the base 1, the top of the lower die seat 401 is provided with a forming groove 402, the inside of the lower die seat 401 is provided with a heat storage cavity 403, the inner wall of the heat storage cavity 403 is fixedly connected with a heat conduction plate 404, one side of the heat conduction plate 404 is fixedly connected with a reinforcing plate 405, the reinforcing plate 405 is in the shape of a right triangle, one side of the reinforcing plate 405 is fixedly connected to the inner wall of the heat storage cavity 403, the inner wall of the forming groove 402 is provided with a second through hole 406, one side of the lower die seat 401 is fixedly connected with a connecting pipe 407, one side of the base 1 is provided with a heating device 5, the output end of the heating device 5 is fixedly connected with a heating pipe 6, one end of the heating pipe 6 is fixedly communicated with one end of the connecting pipe 407, the high-frequency straight seam welded pipe unit pressure head mechanism, the base 1 plays a main supporting and connecting role, the steel is supported and conveyed through the material guiding mechanism 2, the forming mechanism 4 is fixedly communicated with the heating device 5 through the connecting pipe 407, when the steel is transported to the upper side of the lower die seat 401, the heat generated by the heating device 5 is conveyed into the heat storage cavity 403 through the heating pipe 6, the heat conduction plate 404 can be made of copper metal material and the like, the efficiency of heat conduction is improved, the heat is heated to the steel through the second through hole 406, the internal temperature of the steel plate can be uniformly distributed, the stress and deformation caused by temperature change in the process of machining or welding and the like are reduced, the right triangle reinforcing plate 405 can improve the strength of the lower die seat 401 on the one hand, on the other hand, the heat can be concentrated and discharged through the inclined surface, the flowing efficiency is improved, after heating, the steel is pressed through the lower pressing mechanism 3, the steel can form the required arc of the welded pipe according to the arc of the forming groove 402, so that the hot pressing of the steel plate is helpful to keep the size and shape of the steel plate stable, thereby improving the forming precision and quality.

[0027] With reference to Figure 1The down-pressing mechanism 3 comprises a guide column 301, one end of the guide column 301 is fixedly connected to one side of the base 1, the surface of the guide column 301 is slidably connected with a transmission plate 302, one side of the transmission plate 302 is fixedly connected with a pressing plate 303, one end of the guide column 301 is fixedly connected with a top plate 304, one side of the top plate 304 is fixedly installed with a hydraulic cylinder 305, the output end of the hydraulic cylinder 305 is fixedly connected with a connecting block 306, one side of the connecting block 306 is rotatably connected with a first connecting rod 307, one side of the top plate 304 is fixedly connected with a first connecting seat 308, the inner cavity of the first connecting seat 308 is rotatably connected with a second connecting rod 309, the inner cavity of the first connecting rod 307 is rotatably connected with the surface of the second connecting rod 309, one side of the transmission plate 302 is fixedly connected with a second connecting seat 310, the inner cavity of the second connecting seat 310 is rotatably connected with a third connecting rod 311, the surface of the third connecting rod 311 is rotatably connected to the inner cavity of the second connecting rod 309, through the arranged down-pressing mechanism 3, the guide column 301 in the down-pressing mechanism 3 plays a main supporting role, the hydraulic cylinder 305 can displace the connecting block 306 through the output end, one end of the first connecting rod 307, the second connecting rod 309 and the third connecting rod 311 is rotatably connected to be integrated, the connecting block 306 is displaced at the same time to pull the first connecting rod 307, the other end of the first connecting rod 307 pulls the second connecting rod 309 and the third connecting rod 311 to relatively rotate along the connecting point, the other end of the second connecting rod 309 and the third connecting rod 311 is rotatable along the first connecting seat 308 and the second connecting seat 310 respectively, the third connecting rod 311 is rotated at the same time to pull or push the transmission plate 302, when the transmission plate 302 is pushed, the steel in the lower die seat 401 is pressed to be formed, so that the down-pressing mechanism 3 uses the lever principle, through changing the angle of the second connecting rod 309 and the third connecting rod 311, the torque amplification effect is realized, enough down-pressing force is generated.

[0028] Referring to Figure 1 and Figure 4The material guiding mechanism 2 comprises a support 201 fixedly connected to one side of the base 1, a sliding block 202 slidingly connected to the inner wall of the support 201, a material guiding roller 203 rotatably connected to the inner cavity of the sliding block 202, a threaded rod 207 rotatably connected to the inner cavity of the support 201, the surface of the threaded rod 207 being threadedly connected to the inner cavity of the sliding block 202, a guide rod 208 fixedly connected to the inner wall of the support 201, the surface of the guide rod 208 being slidingly connected to the inner cavity of the sliding block 202. The support 201 plays a main supporting role in the material guiding mechanism 2. The material guiding roller 203 is slidingly connected to the inner cavity of the support 201 through the sliding block 202. The material guiding roller 203 supports and transports the steel. The inner cavity of the sliding block 202 is threadedly connected to the surface of the threaded rod 207. Thus, the rotation of the threaded rod 207 can drive the sliding block 202 and the material guiding roller 203 to adjust the height, so as to adapt to the height of the lower die seat 401. The inner cavity of the sliding block 202 slides along the surface of the guide rod 208 while the height of the sliding block 202 is adjusted by the threaded rod 207, thereby improving the stability of the support and adjustment of the sliding block 202.

[0029] With reference to Figure 5 The material guiding roller 203 is internally provided with a preheating cavity 204. The inner wall of the preheating cavity 204 is fixedly connected with a support rod 205. The surface of the support rod 205 is sleeved with an electric heating wire 206. One end of the electric heating wire 206 is fixedly connected to the inner wall of the preheating cavity 204. The surface of the material guiding roller 203 is provided with a first through hole 209. The electric heating wire 206 is fixed in the preheating cavity 204 of the material guiding roller 203 through the support rod 205. The electric heating wire 206 converts electric energy into heat energy and then leads out through the first through hole 209 to preheat the steel, thereby improving the heating efficiency of the steel when entering the lower die seat 401.

[0030] Working principle: the pressure head mechanism is installed in the high-frequency straight seam welded pipe unit through the base 1, the threaded rod 207 rotates to drive the sliding block 202 and the material guide roller 203 to adjust the height, so as to adapt to the height of the lower die seat 401, the material guide roller 203 supports and transports the steel, the electric heating wire 206 is fixed in the preheating cavity 204 of the material guide roller 203 through the support rod 205, the electric heating wire 206 converts electric energy into heat energy and is led out through the first through hole 209, preheats the steel, when the steel is transported to the upper side of the lower die seat 401, the heat generated by the heating device 5 is transported to the heat storage cavity 403 through the heating pipe 6, the heat conducting plate 404 can adopt copper metal material and the like, the efficiency of the introduction is improved, the heat is heated to the steel through the second through hole 406, the internal temperature of the steel plate can be uniformly distributed, the stress and deformation caused by the temperature change in the processing or welding process and the like are reduced, the reinforcing plate 405 of the right-angled triangle can improve the strength of the lower die seat 401 on the one hand, and the heat can be concentrated and led out through the inclined plane, the flow efficiency is improved, the steel is pressed after heating through the lower pressing mechanism 3, the steel can form the required arc of the welded pipe according to the arc of the forming groove 402, so that the hot pressing of the steel plate helps to keep the size and shape of the steel plate stable, thereby improving the forming precision and quality.

[0031] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A high-frequency electric resistance welded pipe mill unit press head mechanism characterized by: Including the base (1), one side of the base (1) is fixedly connected with the material guiding mechanism (2), one side of the base (1) is fixedly connected with the pressing mechanism (3), one side of the base (1) is provided with the forming mechanism (4); The forming mechanism (4) includes a lower die seat (401), the bottom of the lower die seat (401) is fixedly connected to one side of the base (1), the top of the lower die seat (401) is provided with a forming groove (402), the inside of the lower die seat (401) is provided with a heat storage cavity (403), the inner wall of the heat storage cavity (403) is fixedly connected with a heat conduction plate (404), one side of the heat conduction plate (404) is fixedly connected with a reinforcing plate (405), the reinforcing plate (405) is provided in the shape of a right triangle, one side of the reinforcing plate (405) is fixedly connected to the inner wall of the heat storage cavity (403), the inner wall of the forming groove (402) is provided with a second through hole (406), one side of the lower die seat (401) is fixedly connected with a connecting pipe (407).

2. A press head mechanism for a high-frequency direct seam pipe mill train as defined in claim 1, characterized in that: One side of the base (1) is provided with a heat supply device (5), the output end of the heat supply device (5) is fixedly connected with a heat supply pipe (6), one end of the heat supply pipe (6) is fixedly communicated with one end of the connecting pipe (407).

3. A press head mechanism for a high-frequency direct-weld pipe mill train as defined in claim 1, characterized in that: The pressing mechanism (3) includes a guide column (301), one end of the guide column (301) is fixedly connected to one side of the base (1), the surface of the guide column (301) is slidingly connected with a transmission plate (302), one side of the transmission plate (302) is fixedly connected with a pressing plate (303).

4. A press head mechanism for a high-frequency direct-weld pipe mill train as defined in claim 3, characterized in that: One end of the guide column (301) is fixedly connected with a top plate (304), one side of the top plate (304) is fixedly installed with a hydraulic cylinder (305), the output end of the hydraulic cylinder (305) is fixedly connected with a connecting block (306), one side of the connecting block (306) is rotatably connected with a first connecting rod (307), one side of the top plate (304) is fixedly connected with a first connecting seat (308), the inner cavity of the first connecting seat (308) is rotatably connected with a second connecting rod (309), the inner cavity of the first connecting rod (307) is rotatably connected with the surface of the second connecting rod (309), one side of the transmission plate (302) is fixedly connected with a second connecting seat (310), the inner cavity of the second connecting seat (310) is rotatably connected with a third connecting rod (311), the surface of the third connecting rod (311) is rotatably connected to the inner cavity of the second connecting rod (309).

5. A press head mechanism for a high-frequency direct-weld pipe mill train as defined in claim 1, wherein: The material guiding mechanism (2) includes a support (201), one side of the support (201) is fixedly connected to one side of the base (1), the inner wall of the support (201) is slidingly connected with a sliding block (202), the inner cavity of the sliding block (202) is rotatably connected with a material guiding roller (203).

6. A press head mechanism for a high-frequency direct-weld pipe mill train as defined in claim 5, characterized in that: The inside of the material guide roller (203) is provided with a preheating cavity (204), the inner wall of the preheating cavity (204) is fixedly connected with a supporting rod (205), the surface of the supporting rod (205) is sleeved with an electric heating wire (206), one end of the electric heating wire (206) is fixedly connected with the inner wall of the preheating cavity (204), and the surface of the material guide roller (203) is provided with a first through hole (209).

7. A press head mechanism for a high-frequency direct-weld pipe mill train as defined in claim 5, wherein: The inner cavity of the support (201) is rotationally connected with a threaded rod (207), and the surface of the threaded rod (207) is threadedly connected with the inner cavity of the sliding block (202).

8. A press head mechanism for a high-frequency direct-weld pipe mill train as defined in claim 5, wherein: The inner wall of the support (201) is fixedly connected with a guide rod (208), and the surface of the guide rod (208) is slidingly connected with the inner cavity of the sliding block (202).

Images