A plastic-coated tube rolling and welding device

Abstract

The present invention discloses a plastic tube rolling and welding device, which relates to the field of plastic tube processing technology. It includes a chassis, a feeding mechanism, a rolling machine, an upper soldering mechanism, a beveling device and a welding mechanism. The feeding mechanism, the rolling machine, the beveling device, the upper soldering mechanism and the welding mechanism are sequentially installed on the chassis along the processing direction of the plastic tube. The feeding mechanism includes a box cover 1 installed on the chassis, a hinge block is fixed on the top of the box cover 1, and a support rod is elastically hinged on the bottom of the hinge block. Through the arrangement of the feeding mechanism, the upper soldering mechanism and the beveling device, the present invention can limit the raw material sheet and the rolled round tube through the support rod at the feeding mechanism during use, which is convenient for the subsequent automatic welding access. In addition, the plastic tube is opened by the opening device to open a slit and filled with the same material as the metal tube in the plastic tube, which can improve the integrity after welding.

Description

Technical Field

[0001] The invention relates to the technical field of plastic-reinforced pipe processing, in particular to a plastic-reinforced pipe rolling and welding device. Background Art

[0002] Plastic-coated pipe is a new type of pipe, which is composed of metal pipe and plastic layer. It combines the strength of metal pipe and corrosion resistance of plastic pipe. It is widely used in building water supply and drainage, oil and gas transportation, chemical industry, municipal engineering and other fields.

[0003] During the processing of plastic-coated pipes, the metal pipes are usually formed by cold-rolling and rolling the raw material sheets, and then welding and seaming are used to realize the processing of the metal pipes. However, the traditional welding method is prone to produce higher welds, and because the solder material and the metal pipe material are not uniform, the subsequent cleaning and processing are troublesome. The solder problem will also lead to doubts about the strength of the welds. Therefore, in response to this situation, the present invention proposes a new solution. Summary of the Invention

[0004] The purpose of the present invention is to provide a plastic-reinforced tube rolling and welding device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a plastic-reinforced tube rolling and welding device, comprising:

[0006] The chassis, feeding mechanism, rolling machine, soldering mechanism, beveling device and welding mechanism are installed on the chassis in sequence along the processing direction of the plasticized tube;

[0007] The feeding mechanism includes a box cover mounted on the chassis, a hinge block is fixed on the top of the box cover, and a push rod is elastically hinged on the bottom of the hinge block. When the raw material sheet passes through the lying axis, the end of the push rod abuts against the top surface of the raw material sheet;

[0008] The cutting device includes a cutting blade, which is directly opposite to the seam of the circular tube. When the circular tube passes through the cutting blade, the cutting blade cuts it. The cut surface at the cutting edge of the cutting blade is inverted cone shape, and the cutting blade cuts the seam of the circular tube into an inverted cone shape.

[0009] Furthermore, regarding this solution, the interior of the box cover is hollow and passes through the feeding and discharging directions of the raw material sheets. At least two rollers are rotatably installed between the inner walls of the two ends of the box cover close to the feeding end of the raw material sheets. The plane formed by the axes of the two rollers is parallel to the horizontal plane. An adjustment handle is screwed on the top of the box cover. A top cover is rotatably installed on the bottom end of the rod of the adjustment handle. The top cover slides between the two sides of the box cover. A pressure roller is rotatably installed on the bottom of the top cover. Through the cooperation of the pressure roller and the roller, the raw material sheets can pass through the feed port smoothly.

[0010] Furthermore, regarding this solution, the discharge end of the box cover 1 is provided with two side panels, and the two side panels are installed on the chassis. A lying shaft is rotatably installed between the two side panels. After the raw material sheet passes through roller 1, it passes through the lying shaft again. The axes of the two lying shafts are perpendicular to the axis of roller 1.

[0011] Furthermore, regarding this solution, the end of the push rod is located on the lying shaft, and the push rod can rotate toward a roller along the connection point with the hinge block. The upper soldering mechanism includes box cover 2, and the beveling device is arranged between box cover 1 and box cover 2.

[0012] Furthermore, regarding this solution, a roller 2 is also rotatably installed between the inner walls on both sides of the box cover 2, an adjustment handle 2 is screwed on the top of the box cover 2, a top cover 2 is also rotatably installed at the bottom of the rod of the adjustment handle 2, and a pressure roller 2 is also rotatably installed at the bottom of the top cover 2.

[0013] Furthermore, regarding this solution, a slide groove is provided on the second box cover, and the beveling device also includes a positioning plate, one end of the positioning plate passes through the slide groove and is fixed to the second top cover, and the other end of the fixed plate is fixed with a mounting bracket, which is used to install a blade cover of the cutting blade, and the cutting blade rotates sideways at the blade cover, and a driving source 2 for driving the cutting blade is installed on the mounting bracket.

[0014] Furthermore, regarding this solution, a fixing plate is fixed on the chassis, and a vertical limiting slot is opened on the fixing plate. Screws are slidably installed in the limiting slot, and the screws are used to fasten the mounting frame.

[0015] Furthermore, regarding this solution, two discharge shafts are rotatably installed between the inner walls on both sides of the second box cover. The discharge shafts are located directly above the travel path of the circular tube. The axes of the two discharge shafts are parallel to the axis of the second roller. Clamping rings are fixed on the surfaces of the two discharge shafts, and concave rings are provided at the clamping rings. The nearest notches of the two clamping rings form a channel.

[0016] Furthermore, regarding this solution, the clamping ring is made of rubber, and the channel opening formed between the clamping rings is slightly smaller than the diameter of the solder. A feed port is provided on the top of the box cover 2, and the feed port is directly opposite to the channel opening formed by the clamping ring, so as to facilitate the transportation of the solder. A pressing shaft is also provided at the discharge end of the box cover 2, and the pressing shaft is rotatably installed between the inner walls on both sides of the box cover 2, and the pressing shaft just rolls on the formed rolled tube.

[0017] Furthermore, regarding this solution, the welding mechanism includes a robotic arm, a laser welding head is provided at the end of the robotic arm, and the laser welding head is tilted along the direction of travel of the raw material sheet.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The plasticized tube rolling welding device is provided with a feeding mechanism, a welding mechanism and a beveling device. During use, the device can limit the raw material sheet and the rolled round tube through the support rod at the feeding mechanism, which is convenient for the subsequent automatic welding connection. In addition, the plasticized tube is opened with a slit by the slit device and filled with the same material as the metal tube in the plasticized tube, which can improve the integrity after welding and improve the welding strength.

[0020] At the same time, through the setting of the feeding mechanism, upper solder structure and beveling device, the device has a high degree of automation, can continuously realize the welding process of the metal tube in the plastic-reinforced tube, and improve the metal tube forming efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the feeding mechanism of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the soldering mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the position structure of the beveling device of the present invention;

[0025] Figure 5 This is a structural schematic diagram of the cutting blade position and the round tube position after rolling in the present invention.

[0026] Figure: 1, chassis; 2, feeding mechanism; 201, box cover 1; 202, roller 1; 203, top cover 1; 204, pressure roller 1; 205, adjustment handle 1; 206, hinge block; 207, push rod; 208, side plate; 209, lying shaft; 210, driving source 3; 3, rolling machine; 4, soldering mechanism; 401, box cover 2; 402, unwinding shaft; 4021, clamping ring; 403, pressure shaft; 4 04. Roller 2; 405. Drive source 1; 406. Top cover 2; 407. Press roller 2; 408. Adjustment handle 2; 409. Feed port; 5. Beveling device; 501. Fixing plate; 5011. Limiting groove; 502. Positioning plate; 503. Cutting blade; 504. Mounting frame; 505. Drive source 2; 506. Screw; 6. Welding mechanism; 601. Robotic arm; 602. Laser welding head. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1 As shown, the present invention provides a technical solution: a plastic tube rolling and welding device, comprising a chassis 1, a feeding mechanism 2, a rolling machine 3, an upper soldering mechanism 4, a beveling device 5 and a welding mechanism 6, the feeding mechanism 2, the rolling machine 3, the beveling device 5, the upper soldering mechanism 4 and the welding mechanism 6 are sequentially installed on the chassis 1 along the processing direction of the plastic tube, the plastic tube raw material sheet after rolling enters the welding device from the feeding mechanism 2, the raw material sheet is guided to the rolling machine 3 at the feeding mechanism 2, and is passed through the feeding mechanism 2 The raw material sheets are positioned to avoid positional displacement of the raw material sheets during subsequent processing. After passing through the feeding mechanism 2, the raw material sheets are rolled into tubes under the action of the rolling machine 3. The rolling machine 3 is a common round tube rolling equipment on the market and will not be described here. After the tube is rolled by the rolling machine 3, the seam of the round tube is opened by the beveling device 5 to improve the welding environment at the seam of the round tube. While continuing to transport, the upper soldering mechanism 4 adds solder to the seam of the rolled tube, and the seam of the plasticized tube is welded through the welding mechanism 6.

[0029] like Figure 1 and Figure 2 As shown, in order to ensure the smooth implementation of the above embodiment, it is necessary to understand that the feeding mechanism 2 includes a box cover 201 installed on the chassis 1, the box cover 201 is hollow inside and passes through the feeding and discharging directions of the raw material sheet, at least two rollers 202 are rotatably installed between the inner walls of the two ends of the box cover 201 close to the feeding end of the raw material sheet, the plane formed by the axes of the two rollers 202 is parallel to the horizontal plane, an adjustment handle 205 is screwed on the top of the box cover 201, and a top cover 203 is rotatably installed on the bottom end of the rod body of the adjustment handle 205. 203 slides between the two sides of the box cover 201, and the adjustment handle 205 is screwed to the connection part of the box cover 201. That is to say, when the adjustment handle 205 is rotated, the height of the top cover 203 in the box cover 201 can be controlled, and a pressure roller 204 is rotatably installed at the bottom of the top cover 203. Through the cooperation of the pressure roller 204 and the roller 202, the raw material sheet can smoothly pass through the feeding port 409. A driving source 3 210 is provided on one side of the box cover 201. The driving source 3 210 is used to drive one of the rollers 202 to rotate;

[0030] like Figure 2As shown, the raw material sheet continues to be transported forward, and two side plates 208 are provided at the discharge end of the box cover 201. The two side plates 208 are installed on the chassis 1, and a lying shaft 209 is rotatably installed between the two side plates 208. After the raw material sheet passes through the roller 202, it passes through the lying shaft 209 again. The axes of the two lying shafts 209 are perpendicular to the axis of the roller 202. The support formed by the two lying shafts 209 just supports both sides of the raw material sheet. A hinge block 206 is fixed on the top of the box cover 201, and a support rod 207 is elastically hinged at the bottom of the hinge block 206. The end of the support rod 207 is located at the lying position. On the shaft 209, that is, the push rod 207 can rotate along the connection point with the hinge block 206 toward the roller 202, and remain stable under the obstruction of the lying shaft 209. When the raw material sheet passes through the lying shaft 209, the end of the push rod 207 is against the top surface of the raw material sheet. Through this structural setting, the raw material sheet can always maintain a stable position when it is rolled by the rolling machine 3. Simply put, when the raw material sheet is rolled, the weld seam of the round tube can always face upward, and the push rod 207 can be stuck at the seam to limit the round tube, which is convenient for subsequent solder filling and welding operations of the round tube.

[0031] like Figure 1 and Figure 3 As shown, after the positioning and rolling of the raw material sheet are completed, the rolled round tube is cut open. Under the positioning effect of the feeding mechanism 2, the weld of the round tube is always facing upwards. The upper soldering mechanism 4 includes a box cover 2 401. The beveling device 5 is arranged between the box cover 1 201 and the box cover 2 401. The cutting device includes a cutting blade 503. The cutting blade 503 is directly opposite to the seam of the round tube. When the round tube passes through the cutting blade 503, the cutting blade 503 cuts it. The cross-section of the cutting blade 503 is in the shape of an inverted cone, which can cut the seam of the round tube into an inverted cone. It should be understood that in the process of cutting the round tube, the cutting of the cutting blade 503 does not penetrate the inner and outer walls of the round tube to avoid welding corrosion.

[0032] like Figure 3 As shown, after the opening is completed, the round tube enters the feeding mechanism 2, and roller 2 404 is also rotatably installed between the inner walls of the box cover 2 401 on both sides, and an adjusting handle 2 408 is screwed on the top of the box cover 401, and the bottom of the rod of the adjusting handle 2 408 is also rotatably installed with a top cover 2 406, and a pressing roller 2 407 is also rotatably installed on the bottom of the top cover 2 406. After the opening is made on the round tube, the round tube is limited by roller 2 404 and pressing roller 2 407 to keep it stable.

[0033] like Figure 3 and Figure 4As shown, it should be understood that a slide groove is provided on the box cover 401, and the beveling device 5 also includes a positioning plate 502. One end of the positioning plate 502 passes through the slide groove and is fixed to the top cover 406. The other end of the fixing plate 501 is fixed with a mounting bracket 504. The mounting bracket 504 is used to install a knife cover for the cutting blade 503. The cutting blade 503 rotates sideways at the knife cover. In addition, a driving source 505 for driving the cutting blade 503 is installed at the mounting bracket 504. The cutting blade 503 follows the lifting and lowering of the top cover 406. The height is adjusted, and the surfaces of roller 2 404 and pressing shaft 403 are set to an arc shape that is adapted to the surface of the rolled tube. When the pressing shaft 403 is attached to the surface of the tube, it can limit the tube well. That is to say, the height position of the cutting blade 503 can be adjusted by adjusting the position of the top cover 2 406. A fixing plate 501 is fixed on the chassis 1, and a vertical limiting groove 5011 is provided on the fixing plate 501. A screw 506 is slidably installed at the limiting groove 5011, and the screw 506 is used to fasten the mounting frame 504.

[0034] like Figure 3 As shown, two feeding shafts 402 are rotatably installed between the inner walls of both sides of the box cover 401. The feeding shafts 402 are located just above the path of the circular tube. The axes of the two feeding shafts 402 are parallel to the axis of the roller 404. Clamping rings 4021 are fixed to the surfaces of the two feeding shafts 402. A concave ring is provided at the clamping ring 4021. The nearest notch of the two clamping rings 4021 forms a channel, and the solder is placed at the seam of the circular tube through the formed solder. It should be understood that the clamping rings 4021 are made of rubber. When the solder passes through the clamping rings 4021, there is sufficient friction between the clamping rings 4021 and the solder. That is to say, the channel formed between the clamping rings 4021 is slightly smaller than the diameter of the solder. In this case, the solder is clamped for transportation. It is relatively stable and controllable, with better effects. The solder is made of the same material as the raw material sheet, which improves the integrity. A feed port 409 is provided on the top of the second box cover 401. The feed port 409 is directly opposite to the channel opening formed by the clamping ring 4021, which is convenient for solder transportation. A pressing shaft 403 is also provided at the discharge end of the second box cover 401. The pressing shaft 403 is rotatably installed between the inner walls on both sides of the second box cover 401, and the pressing shaft 403 just rolls on the formed rolled round tube, which can limit the solder to prevent the rolled round tube from escaping from the seam of the round tube during the forward traction process. The solder is provided at the seam, which can also reduce the height of subsequent welds and reduce the difficulty of processing. A driving source 1 405 is provided on one side of the second box cover 401, and the driving source 1 405 is used to drive one of the rollers 2 404 to rotate.

[0035] Replay Figure 1In order to ensure the smooth implementation of the above embodiment, it is necessary to understand that after the solder is filled, the coiled tube is welded by the welding mechanism 6. The welding mechanism 6 includes a robotic arm 601. A laser welding head 602 is provided at the end of the robotic arm 601. The laser welding head 602 realizes laser welding of the round tube.

[0036] In summary, combined Figure 1 and Figure 5 , place the raw material sheet of the plasticized tube at the feeding mechanism 2, and through the cooperation of roller 202 and pressure roller 204, as well as the limitation of the push rod 207, the position of the raw material sheet is stable when rolling, and the weld seam is always facing upwards. Subsequently, the rolling machine 3 rolls the raw material sheet into a tube, and the round tube passes through the beveling device 5, and the cutting blade 503 performs a cut operation on its seam to improve the welding environment. After the cut is made, the round tube enters the upper soldering mechanism 4, and the solder is added to the seam of the round tube through the channel formed by the discharge shaft 402 and the clamping ring 4021. The pressure shaft 403 limits the solder. Finally, the mechanical arm 601 of the welding mechanism 6 and the laser welding head 602 perform laser welding on the seam of the round tube to complete the entire processing process. It should be noted in this process that in order to improve the guidance of the solder, after the solder is placed on the weld seam, the end point of the solder is electric welded to fix the solder position and facilitate the subsequent traction of the solder.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A plastic-coated tube rolling welding device, characterized in that: include: Chassis (1), feeding mechanism (2), rolling machine (3), soldering mechanism (4), beveling device (5) and welding mechanism (6); The feeding mechanism (2), the rolling machine (3), the beveling device (5), the soldering mechanism (4) and the welding mechanism (6) are sequentially installed on the chassis (1) along the traveling direction of the plastic-reinforced tube; The feeding mechanism (2) includes a box cover (201) mounted on the chassis (1), a hinge block (206) is fixed on the top of the box cover (201), and a support rod (207) is elastically hinged on the bottom of the hinge block (206). When the raw material sheet passes through the lying shaft (209), the end of the support rod (207) is against the top surface of the raw material sheet; The cutting device comprises a cutting blade (503), the cutting blade (503) being directly opposite to the seam of the circular tube. When the circular tube passes through the cutting blade (503), the cutting blade (503) cuts the rolled circular tube. The cutting surface at the edge of the cutting blade (503) is in the shape of an inverted cone. The cutting blade (503) cuts the seam of the circular tube into an inverted cone. The end of the push rod (207) is located on the lying shaft (209), and the push rod (207) can rotate along the connection point with the hinge block (206) toward the roller 1 (202). The upper soldering mechanism (4) includes a box cover 2 (401), and the groove opening device (5) is arranged between the box cover 1 (201) and the box cover 2 (401); A second roller (404) is also rotatably mounted between the inner walls of both sides of the second box cover (401), an adjustment handle (408) is screwed to the top of the second box cover (401), a top cover (406) is also rotatably mounted at the bottom of the rod of the adjustment handle (408), and a pressure roller (407) is also rotatably mounted at the bottom of the top cover (406); The second box cover (401) is provided with a slide groove, and the beveling device (5) further includes a positioning plate (502), one end of the positioning plate (502) passes through the slide groove and is fixed to the second top cover (406), and the other end of the fixing plate (501) is fixed with a mounting frame (504), and the mounting frame (504) is used to install a blade cover of the cutting blade (503), and the cutting blade (503) is rotated on the blade cover. A second driving source (505) for driving the cutting blade (503) is installed on the mounting frame (504); A fixing plate (501) is fixed on the chassis (1), and a vertically arranged limiting groove (5011) is provided on the fixing plate (501). Screws (506) are slidably installed at the limiting groove (5011), and the screws (506) are used to fasten the mounting frame (504).

2. The plastic-coated tube rolling welding device according to claim 1, characterized in that: The interior of the box cover (201) is hollow and passes through the feeding and discharging directions of the raw material sheets. At least two rollers (202) are rotatably installed between the inner walls on both sides of the box cover (201) near the feeding end of the raw material sheets. The plane formed by the axes of the two rollers (202) is parallel to the horizontal plane. An adjustment handle (205) is screwed on the top of the box cover (201). The bottom end of the rod of the adjustment handle (205) is rotatably installed with a top cover (203). The top cover (203) slides between the two sides of the box cover (201). A pressure roller (204) is rotatably installed at the bottom of the top cover (203). The raw material sheets can pass through the feeding port (409) smoothly through the cooperation of the pressure roller (204) and the roller (202).

3. The plastic-coated tube curling welding device according to claim 2, characterized in that: The discharge end of the box cover 1 (201) is provided with two side plates (208), and the two side plates (208) are installed on the chassis (1). A lying shaft (209) is rotatably installed between the two side plates (208). The raw material sheet passes through the roller 1 (202) and then passes through the lying shaft (209). The axes of the two lying shafts (209) are perpendicular to the axis of the roller 1 (202).

4. The plastic-coated tube curling welding device according to claim 1, characterized in that: Two discharge shafts (402) are rotatably mounted between the inner walls on both sides of the second box cover (401). The discharge shafts (402) are located directly above the path of travel of the circular tube. The axes of the two discharge shafts (402) are parallel to the axis of the second roller (404). Clamping rings (4021) are fixed to the surfaces of the two discharge shafts (402). A concave ring is provided at the clamping ring (4021). The two clamping rings (4021) are closest to the notch to form a channel.

5. The plastic-coated tube curling welding device according to claim 1, characterized in that: The clamping ring (4021) is made of rubber. The passage opening formed between the clamping rings (4021) is slightly smaller than the diameter of the solder. A feed port (409) is provided on the top of the second box cover (401). The feed port (409) is directly opposite to the passage opening formed by the clamping ring (4021), so as to facilitate solder transportation. A pressing shaft (403) is also provided at the discharge port end of the second box cover (401). The pressing shaft (403) is rotatably installed between the inner walls on both sides of the second box cover (401), and the pressing shaft (403) just rolls on the formed rolled tube.

6. The plastic-coated tube curling welding device according to claim 1, characterized in that: The welding mechanism (6) comprises a mechanical arm (601), a laser welding head (602) is provided at the end of the mechanical arm (601), and the laser welding head (602) is arranged obliquely along the traveling direction of the raw material sheet.

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