Gantry automatic welding equipment

Abstract

The utility model relates to the technical field of welding equipment, in particular to gantry automatic welding equipment. The equipment comprises a ground rail, a portal frame and a welding device, wherein the ground rail comprises two rails which are arranged in parallel; the portal frame comprises a beam and supporting plates fixedly connected with the two ends of the beam, the supporting plates are arranged on the ground rails, and a moving assembly is arranged on the top of the beam. The welding device comprises a welding gun and an adjusting plate, one end of the adjusting plate is matched with the moving assembly, the other end of the adjusting plate is connected with the welding gun, and the welding gun is provided with a tracking wheel set which moves synchronously with the welding gun and can roll tightly attached to the surface of the welding part. Through the design, accurate positioning of the welding gun and a welding part in the welding process is achieved, the welding quality and safety are improved, and meanwhile the welding accuracy and reliability of equipment are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a gantry automatic welding equipment. BACKGROUND

[0002] The gantry automatic welding equipment is widely used in industrial production, especially in the fields of steel structure and shipbuilding, for example, the support plate of bridge or ship cabin needs to support heavy objects, and the requirements for strength and light weight are high, so it is necessary to weld reinforcing bars on the plate to enhance the supporting capacity of the plate. With the increasing requirements of manufacturing industry on welding precision and speed, the design of gantry automatic welding equipment is also continuously optimized to meet more complex and higher standard welding requirements.

[0003] During the welding process of the gantry automatic welding equipment, if the position of the welding piece is placed with deviation, the relative position between the welding gun and the welding piece cannot be kept constant during the welding process, which will result in uneven welds of the welding piece, and at the same time, it is also possible that the welding nozzle of the welding gun collides with the welding piece, which not only affects the welding quality but also easily causes safety hazards. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to overcome the above technical problems, and a gantry automatic welding equipment is provided.

[0005] A gantry automatic welding equipment comprises:

[0006] A ground rail comprising two parallel tracks;

[0007] A gantry frame comprising a cross beam and support plates fixedly connected to both ends of the cross beam, the support plates being vertically erected on the tracks, the support plates being slidable along the tracks, the top of the cross beam being provided with a moving assembly, and

[0008] A welding device comprising a welding gun, an adjusting plate and a tracking wheel set, one end of the adjusting plate being matched with the moving assembly, the other end being connected with the welding gun, the welding gun being provided with the tracking wheel set, the tracking wheel set moving synchronously with the welding gun and being able to roll closely to the surface of the welding piece.

[0009] By adopting the above scheme: during the welding process, the tracking wheel set can move closely to the edge of the welding piece, and during the welding process of the welding gun, the tracking wheel set can change with the position change of the welding piece to drive the welding gun to move synchronously, so that the position of the welding gun and the welding piece is kept constant, thereby making the welds of the welding piece more uniform and avoiding the contact between the welding gun and the welding piece to cause safety hazards.

[0010] In one of the embodiments, the tracking wheel set comprises a transverse tracking wheel and a longitudinal tracking wheel, and the transverse tracking wheel and the longitudinal tracking wheel are arranged perpendicularly.

[0011] By adopting the above scheme, the tracking wheel set can limit the transverse and longitudinal directions of the spray gun.

[0012] In one of the embodiments, the bottom of the adjusting plate is provided with a floating member, the floating member is connected with a floating rod, the welding gun is arranged on the floating rod, and one end of the floating rod away from the floating member is connected with the tracking wheel set.

[0013] By adopting the above scheme, when the surface of the welding member has ups and downs, the tracking wheel set drives the floating rod to move in the sliding process, when the tracking wheel set moves to a high place, the floating rod extrudes the floating member upward, when the tracking wheel set moves to a low place, the floating member can apply a vertical downward thrust to the floating rod, so that the tracking wheel set can still closely adhere to the surface of the welding member, and the tracking wheel set can avoid being blocked or unable to contact the surface of the welding member when the surface of the welding member has ups and downs.

[0014] In one of the embodiments, the connection part between the floating member and the adjusting plate is provided with an elastic member, one end of the elastic member is connected with the adjusting plate, the other end is connected with the floating member, the elastic member is parallel to the cross beam, the floating member is provided with a sliding block matched with the adjusting plate, and the sliding block is parallel to the elastic member.

[0015] By adopting the above scheme, when the position of the welding member is deviated or the tracking wheel set encounters obstacles in the left and right directions, the floating member can slide left and right along the adjusting plate under the driving of the tracking wheel set, and the elastic member can reset the tracking wheel set.

[0016] In one of the embodiments, the tracking wheel set further comprises a tracking connecting rod, the transverse tracking wheel and the longitudinal tracking wheel are connected through the tracking connecting rod, the tracking connecting rod is in the shape of “T”, the tracking wheel set and the floating rod are connected through an adjusting block, the floating rod and the tracking wheel set both pass through the adjusting block, and the adjusting block can be fixed at any position of the floating rod and the tracking connecting rod.

[0017] By adopting the above scheme, the position of the tracking wheel set can be adjusted through the adjusting block, so as to adapt to welding members of different shapes.

[0018] In one of the embodiments, the cross beam can bear multiple groups of welding devices.

[0019] By adopting the above scheme, the gantry welding device can process multiple groups of welding members at the same time, and the work efficiency is improved.

[0020] In one of the embodiments, each group of the welding device comprises two symmetrically arranged welding guns.

[0021] By adopting the above scheme: the symmetrical arrangement of the welding guns can simultaneously weld the two sides of the welding piece, thereby increasing the working efficiency of the gantry automatic welding equipment.

[0022] In one of the embodiments, the bottom of the adjusting plate is provided with a moving cross plate connected with the floating members, the moving cross plate carries two floating members, and the floating members can move left and right along the moving cross plate.

[0023] By adopting the above scheme: the two welding guns on the welding device can autonomously adjust the relative position, and the two welding guns on the welding device can adjust the relative position, thereby adapting to welding pieces of different sizes.

[0024] In one of the embodiments, the moving assembly includes a longitudinal drag chain arranged on the top of the adjusting plate and a transverse drag chain arranged on the top of the cross beam.

[0025] By adopting the above scheme: the welding device can move left and right on the cross beam and move in a direction perpendicular to the cross beam, so that the welding device can be adjusted to the optimal working position.

[0026] In one of the embodiments, the transverse drag chain includes multiple groups, and each group of the transverse drag chain can carry the welding device.

[0027] By adopting the above scheme: the transverse drag chain can control the movement of multiple groups of welding devices, so that the relative positions of the welding devices can be flexibly adjusted.

[0028] In summary, the present application has the following at least one beneficial technical effect:

[0029] 1、When the position of the welding piece is deviated or the welding gun is hindered during movement, the position of the welding gun and the welding piece cannot be kept constant, resulting in uneven welds of the welding piece. By arranging the tracking wheel set on the welding gun, the tracking wheel set can move close to the edge of the welding piece during welding. The tracking wheel set can limit the welding gun during welding of the welding gun, so that the position of the welding gun and the welding piece can be kept constant, and the welds of the welding piece can be more uniform, thereby avoiding safety hazards caused by contact between the welding gun and the welding piece.

[0030] 2. By installing a floating component at the bottom of the adjusting plate and setting an elastic component at the connection between the floating component and the adjusting plate, when the surface of the welded part has undulations, the tracking wheel assembly drives the floating rod to move during the sliding process. When the tracking wheel assembly moves to a high position, the floating rod presses the floating component upward. When the tracking wheel assembly moves to a low position, the floating component can apply a vertical downward thrust to the floating rod, so that the tracking wheel assembly can still keep close to the surface of the welded part. This avoids the tracking wheel assembly from being obstructed or unable to contact the surface of the welded part when the surface of the welded part has undulations. When the tracking wheel assembly encounters an obstacle in the left or right direction, the floating component can slide left or right along the adjusting plate under the drive of the tracking wheel, and the elastic component can reset the tracking wheel assembly.

[0031] 3. By setting multiple welding devices on the crossbeam, with two symmetrically arranged welding guns on each welding device, the gantry welding device can process multiple welding parts simultaneously. The symmetrically arranged welding guns can weld both sides of the welding parts at the same time, improving the working efficiency of the gantry automatic welding equipment. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of a gantry automatic welding equipment provided in this application.

[0033] Figure 2 This is a schematic diagram of the welding device.

[0034] Figure 3 This is a schematic diagram of a welding gun.

[0035] Figure 4 This is a schematic diagram of the structure on the back of the welding gun.

[0036] Figure 5 This is a schematic diagram of a welding gun in operation.

[0037] Explanation of reference numerals in the attached drawings: 1. Ground rail; 11. Track; 2. Gantry frame; 21. Crossbeam; 211. Moving component; 2111. Longitudinal drag chain; 2112. Transverse drag chain; 22. Support plate; 3. Welding device; 31. Welding gun; 311. Floating component; 3111. Elastic component; 3112. Slider; 312. Floating rod; 32. Adjusting plate; 321. Moving cross plate; 33. Tracking wheel assembly; 331. Transverse tracking wheel; 332. Longitudinal tracking wheel; 333. Tracking linkage; 4. Adjusting block; 5. Welded component. Detailed Implementation

[0038] Therefore, it is necessary to provide a high-precision, highly adaptable gantry automatic welding equipment.

[0039] Please see Figure 1 , Figure 1 The present application provides a structural schematic diagram of an automatic gantry welding equipment, which includes a ground rail 1, a gantry frame 2, and a welding device 3.

[0040] The ground rail 1 includes two parallel rails, which provide stable support and accurate guidance for the entire gantry 2, ensuring smooth movement of the gantry 2 along the predetermined path during welding, avoiding shaking and deviation, and is the basic structure to ensure welding accuracy. The gantry 2 includes a cross beam 21 and support plates 22 fixed at both ends thereof, the support plates 22 are vertically erected on the ground rail 1, the side surface of the ground rail 1 is provided with a rack matched with the support plates 22, and the support plates 22 are provided with gears matched with the rack, the gears can be driven to rotate by a motor, thereby driving the support plates 22 to slide along the ground rail 1.

[0041] Please refer to Figures 2-3 , Figure 2 The welding device structure diagram, the welding device 3 includes a welding gun 31, an adjusting plate 32 and a tracking wheel set 33, one end of the adjusting plate 32 is matched with the moving assembly 211, one end is connected with the welding gun 31, the welding gun 31 is provided with the tracking wheel set 33, and the tracking wheel set 33 is located above the welding nozzle of the welding gun 31. The tracking wheel set 33 includes a transverse tracking wheel 331, a longitudinal tracking wheel 332 and a tracking connecting rod 333, the tracking connecting rod 333 is in the shape of "T", the transverse tracking wheel 331 and the longitudinal tracking wheel 332 are connected through the tracking connecting rod 333, the transverse tracking wheel 331 and the longitudinal tracking wheel 332 are vertically arranged, the transverse tracking wheel 331 slides along the side surface of the welding piece 5, limits the welding gun 31 in the horizontal direction, the longitudinal tracking wheel 332 slides along the upper surface of the welding piece 5, limits the welding gun 31 in the vertical direction, keeps the position of the welding gun 31 and the welding piece 5 constant, thereby making the welding seam of the welding piece 5 more uniform, and avoiding the safety hazard caused by the contact between the welding gun 31 and the welding piece 5.

[0042] The adjusting plate 32 is provided with a floating piece 311, in the present application, the floating piece 311 is a gas cylinder, which can provide elastic force for the floating rod 312, the elastic force of the gas cylinder can be controlled by the size of the gas pressure, the floating piece 311 is connected with the floating rod 312, the welding gun 31 is sleeved on the floating rod 312, and one end of the floating rod 312, away from the floating piece 311, is connected with the tracking wheel set 33. When the surface of the welding piece 5 has ups and downs, the longitudinal tracking wheel 332 drives the floating rod 312 to move in the process of sliding. When the longitudinal tracking wheel 332 moves to a high place, the floating rod 312 extrudes the floating piece 311 upward; when the longitudinal tracking wheel 332 moves to a low place, the floating piece 311 can exert a vertical downward thrust on the floating rod 312, so that the longitudinal tracking wheel 332 can still closely adhere to the surface of the welding piece 5, avoiding that the tracking wheel set 33 is blocked or cannot contact the surface of the welding piece 5 in the case that the surface of the welding piece 5 has ups and downs.

[0043] Please refer to Figure 4 , Figure 4The schematic diagram of the back structure of the welding gun is shown in the figure. The elastic member 3111 is provided at the connection between the floating member 311 and the adjusting plate 32. In the present application, the elastic member 3111 is a spring. The opposite side of the floating member 311 to the adjusting plate 32 is provided with a connecting column. The opposite side of the adjusting plate 32 to the floating member 311 is also provided with a connecting column. The two ends of the elastic member 3111 are connected with the connecting columns on the floating member 311 respectively. The other end is connected with the connecting column on the floating member 311. The elastic member 3111 is parallel to the crossbeam 21, which provides the floating member 311 with horizontal elastic force. The floating member 311 is provided with a sliding block 3112 matched with the adjusting plate 32. The sliding block 3112 is parallel to the elastic member 3111, so that the floating member 311 can slide along the adjusting plate 32. When the position of the welding member 5 is deviated, the movement of the horizontal tracking wheel 331 encounters an obstacle. The floating member 311 can slide left and right along the adjusting plate 32 under the driving of the horizontal tracking wheel 331. The elastic member 3111 can reset the horizontal tracking wheel 331. When the tracking wheel set 33 encounters an obstacle in the left and right directions, the floating member 311 can slide left and right along the adjusting plate 32 under the driving of the tracking wheel set 33. The elastic member 3111 can reset the tracking wheel.

[0044] The tracking wheel set 33 is connected with the floating rod 312 through the adjusting block 4. The adjusting block 4 is provided with through holes matched with the floating rod 312 and the tracking connecting rod 333 respectively. The adjusting block 4 is also provided with threaded holes capable of adjusting the size of the through holes. Before the gantry automatic welding equipment is used, the adjusting block 4 is sleeved on the floating rod 312. The adjusting block 4 is slid to the optimal working height. Then the bolt is matched with the threaded hole and is tightened, so that the adjusting block 4 is fixed on the floating rod 312. Then the tracking connecting rod 333 is inserted into the other through hole of the adjusting block 4. The tracking connecting rod 333 is moved to the optimal working position. Then the bolt is matched with the threaded hole and is tightened, so that the tracking connecting rod 333 is fixed. Thus, the tracking wheel set 33 is adjusted to the optimal working position, so that the tracking wheel set 33 can be matched with the welding member 5 with different cross-sectional shapes.

[0045] The cross beam 21 can carry a plurality of groups of welding devices 3, the bottom of the adjusting plate 32 of each group of welding devices 3 is provided with a moving cross plate 321, the moving cross plate 321 carries two floating members 311 connected with the welding guns 31, the middle part of the moving cross plate 321 is provided with a lead screw driven by a stepping motor, the floating member 311 can cooperate with the lead screw, the floating member 311 moves left and right along the cross plate by driving the lead screw with the stepping motor, the two welding guns 31 on the cross plate are symmetrically arranged and the welding nozzles face the welding positions on both sides of the welding piece 5, the welding device 3 can simultaneously weld both sides of the welding piece 5, the moving assembly 211 includes a longitudinal drag chain 2111 arranged on the top of the adjusting plate 32 and a transverse drag chain 2112 arranged on the top of the cross beam 21, the transverse drag chain 2112 includes a plurality of groups, each group of the transverse drag chain 2112 can carry the welding device 3, the welding device 3 can move up and down under the driving of the longitudinal drag chain 2111 to reach the best working height, the welding device 3 can move left and right relative to the cross beam 21 under the driving of the transverse drag chain 2112, each transverse drag chain 2112 can drive one or more welding devices 3 to move, so that the relative positions between the welding devices 3 can be flexibly adjusted.

[0046] Please refer to Figure 5 , Figure 5 is a schematic view of the working of the welding gun, the working principle of the present application is as follows: before the gantry automatic welding equipment is used, the welding piece 5 to be welded is placed, the welding piece 5 in the present application is mostly a reinforcing rib or a strip-shaped structure, the welding piece 5 is placed between the two tracks 11 of the ground rail 1 and is arranged in parallel with the ground rail 1, then the transverse drag chain 2112 and the longitudinal drag chain 2111 are controlled to move the welding device 3 to a position close to the welding piece 5, then the moving cross plate 321 is adjusted to move the welding gun 31 to the welding position of the welding piece 5, the tracking wheel set 33 is adjusted to abut against the welding piece 5 through the adjusting block 4, when the welding device 3 is started, the gear on the support plate 22 of the gantry 2 is driven to rotate by the motor, the gear cooperates with the rack on the ground rail 1 to drive the gantry 2 to move along the extension direction of the ground rail 1, the tracking wheel set 33 rolls along the surface of the welding piece 5 in the process of moving, when the tracking wheel set 33 encounters an obstacle in the rolling process, the elastic member 3111 and the floating member 311 can drive the tracking wheel set 33 and the welding gun 31 to slightly displace, so as to avoid the interference between the tracking wheel set 33 and the welding piece 5 in the rolling process, the position between the welding gun 31 and the welding piece 5 is always kept constant, so that the welding seam of the welding piece 5 is more uniform, and the safety hazard caused by the contact between the welding gun 31 and the welding piece 5 is avoided.

[0047] The above are preferred embodiments of the present application, but do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A portal automatic welding apparatus characterized by comprising: include: Ground track (1), comprising two parallel tracks (11); A gantry frame (2) includes a crossbeam (21) and support plates (22) fixedly connected to both ends of the crossbeam (21). The support plates (22) stand vertically on the track (11) and can slide along the track (11). A moving component (211) is provided on the top of the crossbeam (21). The welding device (3) includes a welding gun (31), an adjusting plate (32) and a tracking wheel assembly (33). One end of the adjusting plate (32) is engaged with the moving component (211), and the other end is connected to the welding gun (31). The welding gun (31) is equipped with a tracking wheel assembly (33). The tracking wheel assembly (33) moves synchronously with the welding gun (31) and can roll closely against the surface of the workpiece.

2. A portal automatic welding apparatus according to claim 1, wherein: The tracking wheel assembly (33) includes a horizontal tracking wheel (331) and a vertical tracking wheel (332), wherein the horizontal tracking wheel (331) and the vertical tracking wheel (332) are arranged perpendicularly.

3. A portal automatic welding apparatus according to claim 2, wherein: The bottom of the adjustment plate (32) is provided with a floating component (311), the floating component (311) is connected to a floating rod (312), the welding gun (31) is sleeved on the floating rod (312), and the end of the floating rod (312) away from the floating component (311) is connected to the tracking wheel assembly (33).

4. A portal automatic welding apparatus according to claim 3, wherein: An elastic element (3111) is provided at the connection between the floating element (311) and the adjusting plate (32). One end of the elastic element (3111) is connected to the adjusting plate (32), and the other end is connected to the floating element (311). The elastic element (3111) is parallel to the crossbeam (21). The floating element (311) is provided with a slider (3112) that cooperates with the adjusting plate (32). The slider (3112) is parallel to the elastic element (3111).

5. A portal automatic welding apparatus according to claim 4, wherein: The tracking wheel assembly (33) also includes a tracking link (333), which is T-shaped. The transverse tracking wheel (331) and the longitudinal tracking wheel (332) are connected by the tracking link (333). The tracking wheel assembly (33) and the floating rod (312) are connected by an adjusting block (4). The floating rod (312) and the tracking wheel assembly (33) are both connected by the adjusting block (4). The adjusting block (4) can be fixed at any position of the floating rod (312) and the tracking link (333).

6. A portal automatic welding apparatus according to claim 1, wherein: The crossbeam (21) can support multiple sets of welding devices (3).

7. A portal automatic welding apparatus according to claim 6, wherein: Each welding device (3) includes two symmetrically arranged welding guns (31).

8. A portal automatic welding apparatus according to claim 3, wherein: The bottom of the adjustment plate (32) is provided with a movable horizontal plate (321) connected to the floating member (311). The movable horizontal plate (321) carries two floating members (311), and the floating members (311) can move left and right along the movable horizontal plate (321).

9. A portal automatic welding apparatus according to claim 1, wherein: The moving component (211) includes a longitudinal cable chain (2111) disposed on the top of the adjusting plate (32) and a transverse cable chain (2112) disposed on the top of the crossbeam (21).

10. A portal automatic welding apparatus according to claim 9, wherein: The lateral drag chain (2112) comprises a plurality of groups, and each group of the lateral drag chain (2112) can carry the welding device (3).

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