A multi-angle splicing automatic welding device for guardrail profiles

Abstract

The present application relates to the technical fields of laser welding, in particular to a guardrail profile multi-angle splicing automatic welding device, which solves the problem that the guardrail profile needs to be welded manually by workers when it is installed outdoors, and the workers need to turn according to the welding position during the welding process. The guardrail profile multi-angle splicing automatic welding device comprises two symmetrical fixed seats, characterized in that: a movable surrounding welding assembly is arranged between the two fixed seats, the surrounding welding assembly comprises two symmetrical splicing ring seats, support end rods are fixed to the outer sides of the two ends of the two splicing ring seats, a rack mounting table is arranged on the outer surfaces of the two splicing ring seats, and a transmission rack is mounted on the surface of the rack mounting table. The present application can adjust the inclination angle and welding angle of the welding device according to the installation angle between the guardrail profile and the guardrail, so as to adapt to the welding work of the guardrail profile installed at different angles.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, specifically to an automatic welding device for multi-angle splicing of guardrail profiles. Background Technology

[0002] Guardrail profiles are a type of flexible metal protective product widely used in various residential communities across China. They can serve as permanent fencing or be converted into temporary isolation facilities by adjusting the fixing method of the posts. They are characterized by their aesthetic appeal, durability, non-deformation properties, and quick installation, and are widely adopted by various industries. During the production of guardrail profiles, they need to be spliced ​​according to the product requirements and the product shape. After splicing, welding equipment is needed to reinforce the joints of the profiles.

[0003] For some railings with unique designs, the railing profiles are assembled and aligned according to the product drawings during production. After assembly, one side of the railing profile needs to be welded, and then the other side needs to be welded. This process is time-consuming and requires multiple welding operations. Therefore, it does not meet the current requirements. To address this, we have proposed an automatic welding device for multi-angle splicing of railing profiles. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic welding device for multi-angle splicing of guardrail profiles, so as to solve the problem mentioned in the background art that when producing guardrail profiles, it is necessary to splice the guardrail profiles according to the product drawings, and after splicing, one side of the guardrail profile needs to be welded first, and then the other side needs to be flipped and welded after the first side is finished, which takes a long time and requires multiple welding.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic welding device for multi-angle splicing of guardrail profiles, comprising two symmetrically distributed fixed seats, characterized in that: a movable circumferential welding assembly is provided between the two fixed seats, the circumferential welding assembly comprising two symmetrically distributed splicing annular seats, a support end rod is fixed to the outer sides of both ends of the two splicing annular seats, a rack mounting platform is provided on the outer surface of both splicing annular seats, a transmission rack is mounted on the surface of the rack mounting platform, the two transmission racks are completely symmetrical and C-shaped, and the two transmission racks are spliced ​​to form a complete toothed ring, a rotating gear is mounted on the outer side of one of the transmission racks, a rotating motor is mounted below the rotating gear, a motor mounting base is fixed to the bottom of the rotating motor, an arc-shaped limiting block is fixed on the upper surface of the motor mounting base, the arc-shaped limiting block is located outside the rotating motor, and the motor mounting base is fixed to one of the splicing annular seats;

[0006] The upper surfaces of both transmission racks are equipped with rotation limiting structures, and an arc welding gun is fixed to the outside of the rotation limiting structures. The arc welding gun emits high-temperature laser rays after being energized, thereby welding and fixing the joints of the guardrail profiles.

[0007] Two symmetrical adjustable electric telescopic rods are fixed to the inner side of the top of the fixed base. The movable end of the adjustable electric telescopic rod is fixed with a docking arc plate. The adjustable electric telescopic rod is connected to the surrounding welding assembly through the docking arc plate. The support end rod is rotatably connected to the docking arc plate.

[0008] Preferably, the end of the support rod is fixed with a restraining protrusion. The two support rods and the two restraining protrusions are spliced ​​together to form two cylinders with different diameters but connected to each other. The outer side of the two restraining protrusions is detachably equipped with a damping restraining ring, and the outer diameter of the damping restraining ring is the same as the diameter of the support rod.

[0009] Preferably, the rotation limiting structure includes a limiting arc strip, which is fixed to the upper surface of the transmission rack and its center coincides with the center of the transmission rack. The upper surface of the limiting arc strip is provided with a limiting guide groove, and a T-shaped limiting block is slidably engaged inside the limiting guide groove. A connecting rod is fixed to the top of the T-shaped limiting block, and a connecting plate is fixed to the top of the connecting rod. One end of the connecting plate contacts the top of the splicing ring seat, and a fastening screw is inserted through this end. The bottom end of the fastening screw enters the interior of the splicing ring seat and is connected to the splicing ring seat by a thread.

[0010] Preferably, an angle adjustment mechanism is also installed on the inner top of one of the fixed seats. The angle adjustment mechanism includes an angle adjustment motor and a telescopic electric push rod. The angle adjustment motor and the telescopic electric push rod are fixedly connected to the fixed seat. An electromagnet is fixed to the movable end of the telescopic electric push rod. The electromagnet magnetically attracts and fixes the damping restraint ring.

[0011] Preferably, an angle output gear is fixed to the outside of the output shaft of the angle adjustment motor, and an angle adjustment gear is meshed above the angle output gear. The angle adjustment gear is fixed to the outer surface of the damping restraint ring.

[0012] Preferably, the arc welding gun includes a fixed bracket, one end of which is fixed to the outer surface of the limiting arc strip, and the other end of which extends to the inner side of the splicing annular seat. A fixed block is fixed to this end of the fixed bracket, and a damping rotating block is installed on the outer side of the fixed block for damping rotation.

[0013] Preferably, a gun head mounting base is fixed to the outer surface of the damping rotating block, and a circular hole is provided through the surface of the gun head mounting base. An arc welding gun head is fixedly installed inside the circular hole, and a connecting wire harness is connected to the top of the arc welding gun head. One end of the connecting wire harness is connected to a laser welding device.

[0014] Preferably, the connecting line between the axes of the two arc welding gun heads is perpendicular to the end face of the splicing ring seat.

[0015] Preferably, a rotating slider is fixed to the outer surface of the support end rod, and the rotating slider has a T-shaped structure.

[0016] Preferably, the inner surface of the mating arc plate is provided with a T-shaped guide groove, the two ends of the T-shaped guide groove are flush with the end face of the mating arc plate, and the rotating slider is slidably engaged inside the T-shaped guide groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention can adjust the tilt angle and welding angle of the welding device according to the installation angle between the guardrail profile and the guardrail, thereby adapting to the welding operation of guardrail profiles installed at different angles;

[0019] 2. In this invention, a rotary motor is energized and started during the welding process. The rotary motor drives the transmission rack and rotary limiting structure to rotate through the rotary gear. This causes the rotary limiting structure to drive the arc welding gun head to make a circular motion around the center of the splicing ring seat through the fixed bracket. This enables the circumferential welding of the guardrail profile without the need to weld the profile on one side and then flip it over. This saves the profile flipping process, shortens the overall welding time, reduces the welding difficulty, and improves the welding efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the circumferential welding assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the assembly of the splicing ring seat of the present invention;

[0023] Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the arc welding gun of the present invention;

[0025] Figure 6 This is a schematic diagram of the rotation limiting structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the transmission rack of the present invention;

[0027] Figure 8 for Figure 1 Enlarged view of the structure at point B;

[0028] Figure 9 This is a schematic diagram of the assembly of the damping relief ring and the angle adjustment gear of the present invention;

[0029] Figure 10 This is a cross-sectional view of the structure of the arc-shaped plate of the present invention;

[0030] Figure 11 This is a schematic diagram of the rotating slider of the present invention.

[0031] In the diagram: 1. Fixed base; 2. Adjustable electric telescopic rod; 3. Connecting arc plate; 4. Circumferential welding assembly; 401. Splicing ring seat; 402. Support end rod; 403. Damping restraint ring; 404. Restraint protrusion; 405. Motor fixed base; 406. Arc-shaped limit block; 407. Rotary motor; 408. Rotary gear; 409. Transmission rack; 410. Rotation limit structure; 4101. Limiting arc strip; 4102. Connecting rod; 4103. Connecting plate; 4104. Fastening screw; 4 105. T-shaped limit block; 4106. Limit guide groove; 411. Rack mounting platform; 412. Rotating slider; 5. Arc welding gun; 501. Fixed bracket; 502. Fixed block; 503. Damping rotating block; 504. Connecting wire harness; 505. Arc welding gun head; 506. Gun head mounting seat; 6. Angle adjustment mechanism; 601. Angle adjustment motor; 602. Telescopic electric push rod; 603. Electromagnet; 604. Angle adjustment gear; 605. Angle output gear; 7. T-shaped guide groove. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] like Figure 1 As shown, an automatic welding device for multi-angle splicing of guardrail profiles includes two symmetrically distributed fixed seats 1. A movable circumferential welding assembly 4 is provided between the two fixed seats 1. Two symmetrical adjustable electric telescopic rods 2 are fixed on the inner side of the top of the fixed seats 1. A docking arc plate 3 is fixed to the movable end of the adjustable electric telescopic rod 2. The adjustable electric telescopic rod 2 is connected to the circumferential welding assembly 4 through the docking arc plate 3. The support end rod 402 is rotatably connected to the docking arc plate 3. The opening or closing of the circumferential welding assembly 4 is controlled by the adjustable electric telescopic rod 2 and the docking arc plate 3 to realize the welding or removal of the guardrail assembly by the circumferential welding assembly 4.

[0034] like Figure 1 , Figure 2 and Figure 7As shown, the surrounding welding assembly 4 includes two symmetrically distributed splicing annular seats 401. Support rods 402 are fixed to the outer ends of both ends of the two splicing annular seats 401. A rack mounting platform 411 is provided on the outer surface of each of the two splicing annular seats 401. A transmission rack 409 is mounted on the surface of the rack mounting platform 411. The two transmission racks 409 are completely symmetrical and C-shaped, and are spliced ​​together to form a complete toothed ring. A rotating gear 408 is mounted on the outer side of one of the transmission racks 409, and a rotating gear is mounted below the rotating gear 408. A rotary motor 407 is fixed to the bottom of the rotary motor 407, and an arc-shaped limiting block 406 is fixed to the upper surface of the motor fixing block 405. The arc-shaped limiting block 406 is located outside the rotary motor 407. The motor fixing block 405 is fixed to one of the splicing ring seats 401. The rotary motor 407 and the rotary gear 408 drive two transmission racks 409 to reciprocate around the two splicing ring seats 401 for half a revolution, so that the two arc welding guns 5 can perform circumferential welding on the connection of the two spliced ​​guardrail profiles.

[0035] like Figure 3 As shown, a restraining protrusion 404 is fixed to the end of the support rod 402. The two support rods 402 and the two restraining protrusions 404 are spliced ​​together to form two cylinders with different diameters but connected to each other. A damping restraining ring 403 is detachably installed on the outer side of the two restraining protrusions 404. The outer diameter of the damping restraining ring 403 is the same as the diameter of the support rod 402. After the damping restraining ring 403 and the restraining protrusion 404 are assembled, the damping restraining ring 403 is driven by the angle adjusting gear 604 to rotate synchronously. The presence of the damping restraining ring 403 provides a closed connection between the rotating support rod 402 and the restraining protrusion 404, thereby ensuring that the angle adjusting motor 601, the angle output gear 605 and the angle adjusting gear 604 adjust the angle of the surrounding welding assembly 4.

[0036] like Figure 4 and Figure 6As shown, the rotation limiting structure 410 includes a limiting arc-shaped strip 4101, which is fixed to the upper surface of the transmission rack 409 with its center coinciding with the center of the transmission rack 409. A limiting guide groove 4106 is provided on the upper surface of the limiting arc-shaped strip 4101. A T-shaped limiting block 4105 is slidably engaged with the inner side of the limiting guide groove 4106. A connecting rod 4102 is fixed to the top of the T-shaped limiting block 4105, and a connecting plate 4103 is fixed to the top of the connecting rod 4102. One end of the connecting plate 4103 is connected to the top of the splicing annular seat 401. A fastening screw 4104 is inserted through the contact end. The bottom end of the fastening screw 4104 enters the interior of the splicing ring seat 401 and is connected to the splicing ring seat 401 by threads. The position of the limiting arc strip 4101 and the transmission rack 409 is limited by the connecting plate 4103, the connecting rod 4102, and the T-shaped limiting block 4105, so that the transmission rack 409 and the limiting arc strip 4101 can rotate around the center of the splicing ring seat 401, while the limiting arc strip 4101 and the transmission rack 409 will not be offset in the diameter direction.

[0037] like Figure 2 and Figure 5 As shown, a rotation limiting structure 410 is installed on the upper surface of both transmission racks 409. An arc welding gun 5 is fixed on the outside of the rotation limiting structure 410. The arc welding gun 5 emits high-temperature laser rays after being energized, thereby welding and fixing the splice of the guardrail profile.

[0038] The arc welding gun 5 includes a fixed bracket 501. One end of the fixed bracket 501 is fixed to the outer surface of the limiting arc strip 4101, and the other end of the fixed bracket 501 extends to the inner side of the splicing ring seat 401. A fixed block 502 is fixed to this end of the fixed bracket 501. A damping rotating block 503 is installed on the outer side of the fixed block 502. A gun head mounting seat 506 is fixed on the outer surface of the damping rotating block 503. A circular hole is provided through the surface of the gun head mounting seat 506. An arc welding gun head 505 is fixedly installed inside the circular hole. A connecting wire harness 504 is connected to the top of the arc welding gun head 505. One end of the connecting wire harness 504 is connected to a laser welding device. The angle of the arc welding gun head 505 is changed by rotating the damping rotating block 503, thereby controlling the welding angle.

[0039] The connecting line between the axes of the two arc welding gun heads 505 is perpendicular to the end face of the splicing ring seat 401, ensuring that the welding positions of the two arc welding gun heads 505 are on the same arc with the center of the splicing ring seat 401 as the point, thus avoiding deviations in the weld points of the arc welding gun heads 505 during the welding process, which could lead to quality defects in the processing of the guardrail profile.

[0040] like Figure 8-11As shown, an angle adjustment mechanism 6 is also installed on the inner top of one of the fixed bases 1. The angle adjustment mechanism 6 includes an angle adjustment motor 601 and a telescopic electric push rod 602. The angle adjustment motor 601 and the telescopic electric push rod 602 are fixedly connected to the fixed base 1. An electromagnet 603 is fixed to the movable end of the telescopic electric push rod 602. The electromagnet 603 magnetically attracts and fixes the damping restraint ring 403. An angle output gear 605 is fixed to the outside of the output shaft of the angle adjustment motor 601. An angle adjustment gear 604 is meshed on the top of the angle output gear 605. The angle adjustment gear 604 is fixed to the outer surface of the damping restraint ring 403. The movement of the damping restraint ring 403 and the angle adjustment gear 604 is controlled by the telescopic electric push rod 602 and the electromagnet 603, thereby realizing the connection between the damping restraint ring 403 and the restraint protrusion 404. After the damping restraint ring 403 and the restraint protrusion 404 are connected, the restraint protrusion 404 and the support end rod 402 are rotated.

[0041] A rotating slider 412 is fixed on the outer surface of the support end rod 402. The rotating slider 412 has a T-shaped structure. The inner surface of the mating arc plate 3 is provided with a T-shaped guide groove 7. The two ends of the T-shaped guide groove 7 are flush with the end face of the mating arc plate 3. The rotating slider 412 is slidably engaged in the inner side of the T-shaped guide groove 7. The rotating slider 412 is used to connect the mating arc plate 3 and the support end rod 402, ensuring that the mating arc plate 3 drives the support end rod 402 to move linearly, while ensuring that the rotation of the two support end rods 402 after they are in contact is not affected.

[0042] When welding and fixing the guardrail profiles, the guardrail components to be welded are first spliced ​​together and placed in the middle of the surrounding welding component 4. Then, the movement of the connecting arc plate 3 is controlled by adjusting the electric telescopic rod 2, so that the two connecting arc plates 3 come into contact with each other, thereby making the corresponding support end rods 402 come into contact with each other. Then, the telescopic electric push rod 602 is used to control the electromagnet 603 to drive the damping restraint ring 403 attracted by the electromagnet 603 to move, so that the damping restraint ring 403 is sleeved on the outside of the spliced ​​two restraint protrusions 404. The power supply of the electromagnet 603 is cut off. At this time, the two splicing ring seats 401 and the two transmission racks 409 are spliced ​​into a ring structure.

[0043] Subsequently, the tilt angle of the splicing ring seat 401 is adjusted according to the connection angle between the guardrail profile and the guardrail. During adjustment, the angle adjustment motor 601 drives the angle output gear 605 and the angle adjustment gear 604 to rotate, thereby causing the angle adjustment gear 604 to drive the restraint protrusion 404 and the support end rod 402 to rotate through the damping restraint ring 403, thereby realizing the angle adjustment of the splicing ring seat 401, or the tilt angle of the arc welding gun head 505, so that the welding end of the arc welding gun head 505 points to the welding point of the guardrail profile. When the guardrail profile is installed perpendicular to the guardrail, there is no need to adjust the angle of the splicing ring seat 401, only the angle of the arc welding gun head 505 needs to be changed.

[0044] During welding, the power supply of the welding equipment is turned on, so that the current is transmitted to the arc welding gun head 505 through the connecting wire harness 504. The arc welding gun head 505 emits high-temperature laser rays and welds the joint of the guardrail profile. During the welding process, the rotary motor 407 is powered on and started. The rotary motor 407 drives the transmission rack 409 and the rotation limit structure 410 to rotate through the rotary gear 408. The rotation limit structure 410 drives the arc welding gun head 505 to make a circular motion around the center of the splicing ring seat 401 through the fixed bracket 501, thereby realizing the circumferential welding of the guardrail profile. The whole process does not require manual operation, shortens the welding time, reduces the welding difficulty, and improves the welding efficiency.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic welding device for multi-angle splicing of guardrail profiles, comprising two symmetrically distributed fixing seats (1), characterized in that: A movable circumferential welding assembly (4) is provided between the two fixed seats (1); The surrounding welding assembly (4) includes two symmetrically distributed splicing ring seats (401). Support rods (402) are fixed on the outer sides of both ends of the two splicing ring seats (401). The outer surfaces of the two splicing ring seats (401) are provided with rack mounting platforms (411). A transmission rack (409) is installed on the surface of the rack mounting platform (411). The two transmission racks (409) are completely symmetrical and C-shaped. The two transmission racks (409) are spliced ​​into a complete toothed ring. A rotating gear (408) is installed on the outer side of one of the transmission racks (409). A rotating motor (407) is installed below the rotating gear (408). A motor mounting base (405) is fixed at the bottom of the rotating motor (407). An arc-shaped limiting block (406) is fixed on the upper surface of the motor mounting base (405). The arc-shaped limiting block (406) is located outside the rotating motor (407). The motor mounting base (405) is fixed to one of the splicing ring seats (401). The upper surfaces of the two transmission racks (409) are each equipped with a rotation limiting structure (410), and an arc welding gun (5) is fixed to the outside of the rotation limiting structure (410). Two symmetrical adjustable electric telescopic rods (2) are fixed on the inner side of the top of the fixed base (1). The movable end of the adjustable electric telescopic rod (2) is fixed with a docking arc plate (3). The adjustable electric telescopic rod (2) is connected to the surrounding welding assembly (4) through the docking arc plate (3). The support end rod (402) is rotatably connected to the docking arc plate (3).

2. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 1, characterized in that: The end of the support rod (402) is fixed with a binding protrusion (404). The two support rods (402) and the two binding protrusions (404) are spliced ​​together to form two cylinders with different diameters but connected to each other. The outer side of the two binding protrusions (404) is detachably equipped with a damping binding ring (403). The outer diameter of the damping binding ring (403) is the same as the diameter of the support rod (402).

3. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 2, characterized in that: The rotation limiting structure (410) includes a limiting arc strip (4101), which is fixed on the upper surface of the transmission rack (409) and its center coincides with the center of the transmission rack (409). The upper surface of the limiting arc strip (4101) is provided with a limiting guide groove (4106). A T-shaped limiting block (4105) is slidably engaged on the inner side of the limiting guide groove (4106). A connecting rod (4102) is fixed at the top of the T-shaped limiting block (4105). A connecting plate (4103) is fixed at the top of the connecting rod (4102). One end of the connecting plate (4103) contacts the top of the splicing ring seat (401) and a fastening screw (4104) is inserted through this end. The bottom end of the fastening screw (4104) enters the interior of the splicing ring seat (401) and is connected to the splicing ring seat (401) by a thread.

4. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 1, characterized in that: An angle adjustment mechanism (6) is also installed on the inner top of one of the fixed seats (1). The angle adjustment mechanism (6) includes an angle adjustment motor (601) and a telescopic electric push rod (602). The angle adjustment motor (601) and the telescopic electric push rod (602) are fixedly connected to the fixed seat (1). An electromagnet (603) is fixed to the movable end of the telescopic electric push rod (602). The electromagnet (603) magnetically attracts and fixes the damping restraint ring (403).

5. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 4, characterized in that: An angle output gear (605) is fixed to the outside of the output shaft of the angle adjustment motor (601), and an angle adjustment gear (604) is meshed on the top of the angle output gear (605). The angle adjustment gear (604) is fixed to the outer surface of the damping restraint ring (403).

6. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 5, characterized in that: The arc welding gun (5) includes a fixed bracket (501), one end of which is fixed to the outer surface of the limiting arc strip (4101), and the other end of which extends to the inner side of the splicing ring seat (401). A fixed block (502) is fixed to this end of the fixed bracket (501), and a damping rotating block (503) is installed on the outer side of the fixed block (502) for damping rotation.

7. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 6, characterized in that: The outer surface of the damping rotating block (503) is fixed with a gun head mounting seat (506). A circular hole is provided through the surface of the gun head mounting seat (506). An arc welding gun head (505) is fixedly installed inside the circular hole. A connecting wire harness (504) is connected to the top of the arc welding gun head (505). One end of the connecting wire harness (504) is connected to the laser welding equipment.

8. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 7, characterized in that: The connecting line between the axes of the two arc welding gun heads (505) is perpendicular to the end face of the splicing ring seat (401).

9. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 1, characterized in that: The outer surface of the support end rod (402) is fixed with a rotating slider (412), and the rotating slider (412) has a T-shaped structure.

10. The automatic welding device for multi-angle splicing of guardrail profiles according to claim 9, characterized in that: The inner surface of the mating arc plate (3) is provided with a T-shaped guide groove (7). The two ends of the T-shaped guide groove (7) are flush with the end face of the mating arc plate (3), and the rotating slider (412) is slidably engaged in the inner side of the T-shaped guide groove (7).

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