Tunnel-type straight seam continuous welding apparatus

Abstract

The application discloses a tunnel type straight slit continuous welding device, which comprises a conveying mechanism and a welding mechanism. The conveying mechanism comprises a second conveying line and a first conveying line arranged oppositely. The first conveying line comprises a first conveying part and a second conveying part arranged in front and back along the conveying direction, and a first motor for driving the first conveying part and a second motor for driving the second conveying part. The second conveying line comprises a third conveying part and a plurality of rollers. The third conveying part is arranged in a position corresponding to the second conveying part in up and down. The outer curved wall of the roller is provided with a ring-shaped thin-walled convex edge. The rollers are distributed on the second conveying line along the conveying direction. The differential speed work of the first conveying part and the second conveying part is used to connect the slits of the workpieces in the conveying process, and the slits are welded continuously after being connected. The technical problem that the two ends of the slits cannot be welded in the single workpiece welding is solved, and the production effect is greatly improved and the production quality of the workpiece is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to automatic welding equipment, in particular to a tunnel type straight seam continuous welding equipment. BACKGROUND

[0002] At present, a tubular workpiece is produced by winding a metal plate such as steel into a hollow tube, as shown in the drawings, an axial seam is left on the outer wall of the workpiece after winding, and the seam needs to be welded. Figure 12 During the welding process of the workpiece, the two ends of the seam are often not welded due to the notch shape of the two ends, and if the two ends are forcibly welded, it is more likely to cause burning through, which seriously affects the production efficiency and product quality. SUMMARY

[0003] The present application aims to at least solve one of the above technical problems in the related art. To this end, the present application provides a tunnel type straight seam continuous welding equipment.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] The tunnel type straight seam continuous welding equipment according to the first aspect of the present application comprises: a conveying mechanism comprising a second conveying line and a first conveying line arranged opposite to each other, the first conveying line comprising a first conveying part and a second conveying part arranged in front and back along the conveying direction, and a first motor for driving the first conveying part and a second motor for driving the second conveying part, the second conveying line comprising a third conveying part and a plurality of rollers, the third conveying part being arranged in a position corresponding to the second conveying part in up and down, and the outer wall of the curved surface of each roller being provided with a ring-shaped thin-walled convex edge, and each roller being distributed on the second conveying line along the conveying direction; a welding mechanism located behind the conveying mechanism along the conveying direction, comprising a welding gun and a support.

[0006] The tunnel type straight seam continuous welding equipment according to the present application has at least the following beneficial effects: the differential speed operation of the first conveying part and the second conveying part is used to connect the seams of the workpieces during conveying, and the workpieces are welded continuously after being connected, which completely solves the technical problem that the two ends of the seam cannot be welded during the welding of a single workpiece, greatly improves the production efficiency and ensures the production quality of the workpiece.

[0007] According to some embodiments of the present application, the first conveying line and the second conveying line each comprise a first rack and a plurality of first rollers mounted on the first rack, and the corresponding first rollers are connected and driven by gears; the first rollers are in the shape of an 8 or an arc surface profile.

[0008] According to some embodiments of the present application, the support is in a cylindrical shape, and the outer wall of the support is composed of a plurality of support assemblies, each of which is provided with a plurality of second rollers in the shape of an arc surface profile, and each of the second rollers is arranged along the axial direction of the support.

[0009] According to some embodiments of the present application, a pressing block is further installed on the support, and the pressing block is located behind the welding gun, and the bottom surface of the pressing block is in the shape of an arc surface.

[0010] According to some embodiments of the present application, a cooling mechanism is further included, and the cooling mechanism is connected to the first conveying line through a cross bar and a thin-walled connecting block, and the cooling mechanism includes a base, an elastic component and a cooling component, the base is internally provided with a mounting cavity, the elastic component is mounted in the mounting cavity, the cooling component is mounted on the elastic component, the cooling component is capable of floating up and down on the mounting cavity through the elastic component, and the cooling component includes a water cooling channel and a gas channel.

[0011] According to some embodiments of the present application, a support wheel mechanism is further included, and the support wheel mechanism includes a support frame and a support wheel, the support wheel is rollingly mounted on the support frame, and the support frame is installed below the base.

[0012] According to some embodiments of the present application, a first adjusting mechanism is further included, and the first adjusting mechanism includes a transmission block, a screw rod and a third motor, two transmission blocks are respectively arranged above and below and fixedly connected to the first conveying line and the first conveying line, the screw rod is connected to the two transmission blocks, and the third motor drives the screw rod to rotate; when the screw rod rotates, the two transmission blocks move towards or away from each other.

[0013] According to some embodiments of the present application, a second adjusting mechanism is further included, and the second adjusting mechanism includes a lifting rod and a fourth motor, the lifting rod is connected to the first conveying line, and the fourth motor drives the lifting rod to move up and down.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 is a structural schematic diagram of the present application;

[0017] Figure 2 is a structural view of another perspective of the present application;

[0018] Figure 3is a schematic view of a roller structure of the present application;

[0019] Figure 4 is a schematic view of a support assembly structure of the present application;

[0020] Figure 5 is a schematic view of a first roller structure of the present application;

[0021] Figure 6 is a side view of the present application;

[0022] Figure 7 is a schematic view of an internal structure of the present application;

[0023] Figure 8 is a schematic view of a cooling mechanism of the present application;

[0024] Figure 9 is a schematic view of a cooling mechanism structure of the present application;

[0025] Figure 10 is a schematic view of a cooling member internal structure of the present application;

[0026] Figure 11 is a schematic view of a cooling mechanism in use of the present application;

[0027] Figure 12 is a schematic view of a workpiece structure of the present application. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or like reference numerals represent the same or like elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7The application discloses a tunnel type straight slit continuous welding device, which comprises a conveying mechanism and a welding mechanism. The conveying mechanism comprises a second conveying line 110 and a first conveying line 120 arranged oppositely. The first conveying line 120 comprises a first conveying part 121 and a second conveying part 122 arranged oppositely along a conveying direction. The first conveying part 121 is driven by a first motor 103, and the second conveying part 122 is driven by a second motor (not shown in the figure). The second conveying line 110 comprises a third conveying part 111 and a plurality of rollers 300. The third conveying part 111 is arranged oppositely to the second conveying part 122 along the conveying direction. The outer wall of the roller 300 is provided with a ring-shaped thin-walled convex edge 310. The welding mechanism 200 is located behind the conveying mechanism along the conveying direction and comprises a welding gun 210 and a support 220.

[0030] As Figure 1 , Figure 2 , Figure 3 , and Figure 7 , Figure 12As shown, in the embodiment, the first conveying line 120 and the second conveying line 110 are arranged in an up-down manner, the second conveying line 110 is located above the first conveying line 120, the second conveying part 122 is located behind the first conveying part 121 along the conveying direction, and the third conveying part 111 is located above the second conveying part 122; the workpiece 900 to be welded is placed on the first conveying line 120 with its axis parallel to the conveying direction, the slit 910 of the workpiece 900 faces upward during the placement, the convex edge 310 of each roller 300 is inserted into the slit 910, and the workpiece 900 is transported along the conveying direction between the first conveying line 120 and the second conveying line 110; when the workpiece is transported to the second conveying part 122, the third conveying part 111 has a downward pressure on the workpiece, and the third conveying part 111 and the second conveying part 122 jointly transport the workpiece 900 to the welding mechanism 200; the welding mechanism 200 is located behind the second conveying part 122, the support 220 is connected to the tail end of the conveying mechanism, the welding gun 210 is located above the support 220, and the gun mouth of the welding gun 210 faces downward; during the operation, the workpieces 900 are placed on the first conveying line 120 one by one, and the workpieces 900 are transported to the welding mechanism 200 between the first conveying line 120 and the second conveying line 110; during the transportation, the convex edge 310 of the roller 300 is inserted into the slit 910 of the workpiece 900 to achieve positioning, so that the workpieces 900 are transported in the same direction; the workpiece 900 enters the support 220, the position of the gun mouth of the welding gun 210 corresponds to the position of the slit 910, and the welding gun 210 welds the slit 910; the first motor 103 drives the first conveying part 121 at a speed V1, the second motor drives the second conveying part 122 at a speed V2, the first conveying part 121 transports the workpiece to the second conveying part 122, the second conveying part 122 transports the workpiece 900 into the support 220 at a stable speed V2, and the workpiece 900 moves in the support 220 while the welding gun 210 welds the slit 910; when each workpiece 900 is placed on the first conveying line 120, it first enters the first conveying part 121, and there is a certain spacing between the workpieces 900 during the placement; when the previous workpiece 900 enters the support 220 at the speed V2, the first conveying part 121 transports the next workpiece 900 to the second conveying part 122 at a speed V1 greater than V2; when the next workpiece 900 transitions from the first conveying part 121 to the second conveying part 122 at the speed V1, the front end surface of the next workpiece 900 closely abuts the rear end surface of the previous workpiece 900; after the abutment, the speed V1 of the first conveying part 121 is reduced to the speed V2, so that the next workpiece 900 after the abutment moves synchronously with the previous workpiece 900 at the same speed until the next workpiece 900 completely enters the second conveying part 122; in this way, the adjacent workpieces 900 are abutted before entering the welding mechanism 200 for welding.Since the adjacent workpieces 900 are closely connected end to end, the seams 910 of the workpieces 900 are connected into a straight seam, and the welding gun 210 can perform continuous welding on the seams 910 of the workpieces 900, completely solving the technical problem that the two ends of the seam 910 cannot be welded when a single workpiece 900 is welded.

[0031] The tunnel type straight seam continuous welding equipment utilizes the differential operation of the first conveying part 121 and the second conveying part 122 to butt joint the workpieces 900 during conveying, connect the seams 910 of the workpieces 900, and then perform continuous welding, completely solving the technical problem that the two ends of the seam 910 cannot be welded when a single workpiece 900 is welded, and greatly improving the production effect and ensuring the production quality of the workpieces 900.

[0032] The speed V1 of the first motor 103 can be controlled by an inductor or a PLC to achieve the change time point.

[0033] In some specific embodiments of the present application, the first conveying line 120 and the second conveying line 110 each include a first rack 101 and a plurality of first rollers 102 mounted on the first rack 101, and the corresponding first rollers 102 are connected and driven by gears 104; the first rollers 102 are in the shape of an 8 or an arc profile; that is, the first conveying part 121, the second conveying part 122, and the third conveying part 111 each have corresponding first rollers 102 and gears 104 to form a conveying structure; the outer wall of the first roller 102 is profiled on the outer wall arc surface of the workpiece 900, effectively clamping the workpiece 900 between the first conveying line 120 and the second conveying line 110 for conveying, and the gear transmission ensures the stability of the conveying of the first conveying part 121 and the second conveying part 122.

[0034] As shown in Figure 1 , Figure 2 and Figure 4 , the support 220 is in the shape of a cylinder, and the outer wall thereof is composed of a plurality of support assemblies 230, each of which is provided with a plurality of second rollers 231 in the shape of an arc profile, and each of the second rollers 231 is arranged along the axial direction of the support 220; the workpiece 900 enters the support 220, and the second rollers 231 on the support 220 clamp the surface of the workpiece 900, while reducing the friction between the workpiece 900 and the support 220 during movement, reducing the shaking of the workpiece 900 during movement, and improving the welding quality.

[0035] As shown in Figure 2As shown in the drawings, in some embodiments of the present application, the support 220 is also provided with a pressing block 500 located behind the welding gun 210, the bottom surface of the pressing block 500 is arc-shaped; the pressing block 500 is located above the tail portion, the bottom surface of the pressing block 500 is pressed on the surface of the workpiece 900, the arc surface is matched with the curved surface of the workpiece 900, the pressing block 500 has a downward pressure on the workpiece 900, the friction between the pressing block 500 and the workpiece 900 is increased, the workpiece 900 is prevented from moving on the support 220, and the welding effect is improved.

[0036] As shown in the drawings, Figure 1 , Figure 2 , Figures 6 to 11 As shown in the drawings, in some embodiments of the present application, the cooling mechanism 600 is connected to the first conveying line 120110 through the cross rod 130 and the thin-wall connecting block 140, the cooling mechanism 600 includes a base 610, an elastic component 620 and a cooling component 630, the base 610 is internally provided with a mounting cavity 611; the elastic component 620 is mounted in the mounting cavity 611; the cooling component 630 is mounted on the elastic component 620, the cooling component 630 is floated up and down on the mounting cavity 611 through the elastic component 620, the cooling component 630 includes a water cooling channel 631 and a gas channel 632. The thin-wall connecting block 140 is downwardly mounted on the second conveying line 110, the thickness of the thin-wall connecting block 140 is smaller than the width of the slit 910 of the workpiece 900, and the thin-wall connecting block 140 is in the same horizontal line as the roller 300, the front portion of the cross rod 130 is fixedly connected below the thin-wall connecting block 140, and the cross rod 130 is installed in parallel to the conveying direction, the cooling mechanism 600 is installed on the rear portion of the cross rod 130 and upwardly and located behind the welding gun 210; when the workpiece 900 is transported, the thin-wall connecting block 140 passes through the slit 910 of the workpiece 900, and the cross rod 130 is located inside the workpiece 900; after welding, the slit 910 moves to the cooling mechanism 600, the cooling component 630 is plate-shaped, the upper surface of the cooling component 630 is attached to the inner wall of the weld of the slit 910, cooling water is connected to the water cooling channel 631 to circulate heat exchange, the cooling component 630 cools the weld, and inert gas such as argon is connected to the gas channel 632 to protect the weld from oxidation by using the inert gas; due to the unevenness of the weld, the size of the inner diameter of the workpiece 900 at the weld fluctuates, the cooling component 630 changes according to the inner diameter, the cooling component 630 is elastically moved up and down by the elastic force of the elastic component 620, and the position is automatically adjusted to match the change of the inner diameter of the workpiece 900, so that the cooling and oxidation prevention effects of the workpiece 900 are ensured.

[0037] The elastic component 620 can be composed of a plurality of springs.

[0038] In some embodiments of the present application, a supporting wheel mechanism 640 is further included, which comprises a supporting frame 641 and supporting wheels 642, the supporting wheels 642 being rollably mounted on the supporting frame 641, and the supporting frame 641 being mounted below the base 610; in the present embodiment, the supporting frame 641 is connected to the lower part of the cross bar 130 below the base 610, and the supporting wheels 642 abut against the inner wall of the workpiece 900, and roll on the inner wall of the workpiece 900 when the workpiece 900 moves, and the base 610 is supported by the supporting wheel mechanism 640 when the cooling component 630 floats up and down.

[0039] In some embodiments of the present application, a first adjusting mechanism is further included, which comprises transmission blocks 710, a screw rod 720 and a third motor 730, two transmission blocks 710 being respectively and upwardly or downwardly fixedly connected to the first conveying line 120110 and the second conveying line 110120, the screw rod 720 being connected to the two transmission blocks 710, and the third motor 730 driving the screw rod 720 to rotate; when the screw rod 720 rotates, the two transmission blocks 710 move towards or away from each other; the screw rod 720 and the transmission blocks 710 are threadedly connected, and the two transmission blocks 710 move towards or away from each other, thereby driving the first conveying line 120110 and the second conveying line 110120 to move upwardly or downwardly, so as to adjust the distance between the first conveying line 120110 and the second conveying line 110120 to adapt to the size of the workpiece 900.

[0040] In some embodiments of the present application, a second adjusting mechanism is further included, which comprises a lifting rod 810 and a fourth motor 820, the lifting rod 810 being connected to the second conveying line 110, and the fourth motor 820 driving the lifting rod 810 to move up and down; the position of the second conveying line 110 is adjusted by the second adjusting mechanism, and when the first conveying line 120 is adjusted by the first adjusting mechanism to move up and down synchronously with the second conveying line 110, the overall height position of the first conveying line 120 and the second conveying line 110 is adjusted by the second adjusting mechanism to match the position of the welding mechanism 200.

[0041] Although the embodiments of the present application have been shown and described, those skilled in the art understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and all of them belong to the protection scope of the present application.

Claims

1. A tunnel-type straight seam continuous welding apparatus characterized by comprising: The utility model relates to a welding device for welding workpiece, comprising: a conveying mechanism, including second conveying line (110) and first conveying line (120) arranged oppositely, the first conveying line (120) includes first conveying part (121) and second conveying part (122) arranged in front and back along the conveying direction, and first motor (103) for driving the first conveying part (121), second motor for driving the second conveying part (122), the second conveying line (110) includes third conveying part (111) and a plurality of rollers (300), the third conveying part (111) is arranged in correspondence with the second conveying part (122) up and down, the curved surface outer wall of the roller (300) is provided with annular thin-walled convex edge (310) on the ring shaft, and the roller (300) is distributed on the second conveying line (110) along the conveying direction, when placing, the slit (910) of workpiece (900) faces upwards, and the convex edge (310) of the roller (300) is inserted into the slit (910); a welding mechanism (200) is located behind the conveying mechanism along the conveying direction, including welding torch (210) and support (220); the first conveying line (120) and the second conveying line (110) all include first rack (101) and a plurality of first rollers (102) installed on the first rack (101), corresponding first rollers (102) are connected and driven by gear (104);The first roller (102) is in the shape of 8 or arc surface profiling; The outer wall of the first roller (102) is profiled on the outer wall arc surface of the workpiece (900); When working, the workpiece (900) is placed on the first conveying line (120) one by one, and the workpiece (900) is transported between the first conveying line (120) and the second conveying line (110) to the welding mechanism (200) direction; It also includes a cooling mechanism (600), which is connected to the first conveying line (120) through a cross bar (130) and a thin-walled connecting block (140), the cooling mechanism (600) includes a base (610), an elastic component (620) and a cooling component (630), the base (610) is provided with an installation cavity (611) in the inside, the elastic component (620) is installed in the installation cavity (611), the cooling component (630) is installed on the elastic component (620), the cooling component (630) is floated up and down on the installation cavity (611) through the elastic component (620), and the cooling component (630) includes water cooling channel (631) and gas channel (632). The thin-wall connecting block (140) is installed downward on the second conveying line (110), the thickness of the thin-wall connecting block (140) is less than the slit (910) width of the workpiece (900), the thin-wall connecting block (140) is in the same horizontal line with the roller (300), the front part of the crossbar (130) is fixed below the thin-wall connecting block (140), and the crossbar (130) is installed in parallel to the conveying direction, the cooling mechanism (600) is installed at the rear part of the crossbar (130) and behind the welding gun (210) through the base (610); when the workpiece (900) is transported, the thin-wall connecting block (140) passes through the slit (910) of the workpiece (900), and the crossbar (130) is located inside the workpiece (900).

2. The tunnel-type straight seam continuous welding apparatus according to claim 1, characterized by: The support (220) is in a cylindrical shape, and the outer wall thereof is composed of a plurality of support assemblies (230), each of which is provided with a plurality of arc-shaped second rollers (231), and each of the second rollers (231) is arranged along the axial direction of the support (220).

3. The tunnel-type straight seam continuous welding apparatus according to claim 2, characterized by: The support (220) is further provided with a pressing block (500) located behind the welding gun (210), and the bottom surface of the pressing block (500) is in an arc shape.

4. The tunnel-type straight seam continuous welding apparatus according to claim 1, characterized by: The support wheel mechanism (640) is further provided, which comprises a support frame (641) and a support wheel (642), the support wheel (642) is rollingly installed on the support frame (641), and the support frame (641) is installed below the base (610).

5. The tunnel-type straight seam continuous welding apparatus according to claim 1, characterized by: The first adjusting mechanism is further provided, which comprises a transmission block (710), a screw rod (720) and a third motor (730), two transmission blocks (710) are fixedly connected on the first conveying line (120) and the second conveying line (110) respectively, the screw rod (720) is connected with the two transmission blocks (710), and the third motor (730) drives the screw rod (720) to rotate; when the screw rod (720) rotates, the two transmission blocks (710) move towards or away from each other.

6. The tunnel-type straight seam continuous welding apparatus according to claim 5, characterized by: The second adjusting mechanism is further provided, which comprises a lifting rod (810) and a fourth motor (820), the lifting rod (810) is connected with the first conveying line (120), and the fourth motor (820) drives the lifting rod (810) to move up and down.

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