Gantry automatic welding line

Abstract

Gantry automatic welding line relates to welding equipment, including: support frame, top is equipped with first guide rail group and second guide rail group which are distributed up and down; Upper moving plate, slidingly arranged on the first guide rail group, driven by first driving mechanism to slide horizontally on the support frame; The upper moving plate is equipped with a plurality of upper limit blocks matched with the welding piece; Lower moving plate, slidingly arranged on the second guide rail group, driven by second driving mechanism to slide horizontally on the support frame; The lower moving plate is equipped with a plurality of lower limit blocks matched with the welding piece; The top surface of the lower limit block and the top surface of the upper moving plate are provided with sliding spacing.The present application does not need additional conveying equipment or manual handling, makes the welding piece conveying and welding process coherent, greatly shortens the production rhythm, significantly improves the welding efficiency, and reduces the equipment investment and labor cost.

Description

Technical Field

[0001] This utility model relates to welding equipment, and more particularly to an automatic gantry welding line. Background Technology

[0002] In mass production fields such as automobile manufacturing and hardware processing, multi-point welding machines have become core equipment for welding sheet metal parts and frame structures due to their ability to simultaneously weld multiple welding points. Among them, gantry-type multi-point welding machines are widely used in the processing of large or complex welding parts due to their advantages of stable structure and wide welding range. In the existing welding process of gantry-type multi-spot welding machines, the workpieces to be welded must be manually transferred to the welding station inside the gantry frame. Once the workpieces are in place, the upper and lower electrode assemblies are activated to complete the welding. However, this traditional method has many drawbacks: On the one hand, the conveying of welded parts relies on manual operation, which not only increases labor costs, but also leads to a longer production cycle and difficulty in improving welding efficiency due to the lack of continuity between the conveying and welding processes. On the other hand, the limited transfer accuracy means that the welded parts are prone to positional deviation when they arrive at the welding station, directly affecting the accuracy of the subsequent alignment between the electrode and the welded parts. If the welded parts are misaligned, it can easily cause poor contact between the electrode and the welded parts, leading not only to quality problems such as incomplete welds and missing welds, but also potentially damaging the electrode head due to uneven electrode stress, increasing equipment maintenance costs.

[0003] Therefore, there is an urgent need for an automated gantry welding line that integrates conveying and welding functions, with precise conveying, reliable electrode alignment, and high welding efficiency, in order to solve the aforementioned problems in the existing technology. Utility Model Content

[0004] This invention addresses the above problems by providing an automated gantry welding line that improves the accuracy and efficiency of batch welding.

[0005] The technical solution of this utility model is: A gantry automatic welding line includes: The support frame has a first guide rail group and a second guide rail group distributed vertically at the top. The upper movable plate is slidably mounted on the first guide rail group and is driven to slide horizontally on the support frame by the first drive mechanism; the upper movable plate is provided with a plurality of upper limit blocks adapted to the welded parts; The lower moving plate is slidably mounted on the second guide rail group and is driven to slide horizontally on the support frame by the second driving mechanism; the lower moving plate is provided with a plurality of lower limit blocks adapted to the welded parts; a sliding gap is provided between the top surface of the lower limit block and the top surface of the upper moving plate.

[0006] Specifically, the tail end of the support frame is located inside the gantry frame; On the gantry frame, an upper electrode welding head assembly is provided above the upper moving plate; a plurality of upper electrode heads in the upper electrode welding head assembly move up and down within the gantry frame via an upper linear drive mechanism. Inside the gantry frame, a lower electrode welding head assembly is provided below the lower moving plate; several lower electrode heads in the lower electrode welding head assembly move up and down inside the gantry frame via a lower linear drive mechanism.

[0007] Specifically, the first driving mechanism includes: The first rack is fixedly installed on the inner side wall of the support frame; The first motor is vertically fixed on the upper movable plate, and the output shaft is provided with a first gear fixedly connected to it, which meshes with the first rack.

[0008] Specifically, the second drive mechanism includes: The second rack is fixedly installed on the inner side wall of the support frame and is parallel to the second guide rail assembly; The second motor is fixedly installed at the bottom of the lower moving plate, and a second gear is fixedly connected to the output shaft. The second gear meshes with the second rack.

[0009] Specifically, the upper limit block includes: Multiple upper support blocks are provided and fixedly installed on the top surface of the upper movable plate, and are adapted to the positioning holes near the edge of the welded part.

[0010] Specifically, the top cross-section of the upper support block has a shape that is wider at the bottom and narrower at the top.

[0011] Specifically, the upper limit block also includes: Multiple upper positioning blocks are provided, which are fixedly connected to the top surface of the upper movable plate and located within the multiple upper support blocks; Multiple upper insulating pads are provided, each corresponding to and fixedly installed on the top of the upper positioning block; the top of the upper insulating pad is provided with multiple welding pins that are compatible with the welded parts.

[0012] Specifically, the upper movable plate is provided with multiple first hollow openings.

[0013] Specifically, the lower movable plate has a second hollow opening in the middle; The second hollow opening is equipped with a lower floating plate that moves up and down; The lower limit block is disposed on the top surface of the lower floating plate.

[0014] Specifically, the lower floating plate is driven to reciprocate up and down within the lower moving plate by a floating lifting mechanism fixedly mounted on the lower moving plate.

[0015] This utility model features a support frame with vertically distributed double guide rails, along with upper and lower moving plates, integrating conveying and load-bearing functions. It eliminates the need for additional conveying equipment or manual handling, allowing for seamless connection between the conveying of welded parts and the welding process. This significantly shortens the production cycle time, dramatically improves welding efficiency, and simultaneously reduces equipment investment and labor costs. The upper and lower moving plates are each equipped with limiting blocks adapted to the welded parts, which, combined with the precise guidance of the double guide rails, ensures stable positioning of the welded parts during conveying, preventing displacement and providing a reliable foundation for electrode alignment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 yes Figure 1 Enlarged structural diagram of region A in the middle; Figure 3 This is a schematic diagram of the three-dimensional structure of the support frame; Figure 4 This is a schematic diagram of the three-dimensional structure of the upper movable plate; Figure 5 This is a schematic diagram of the three-dimensional structure of the lower movable plate; Figure 6 This is a three-dimensional structural diagram of the lower electrode welding head assembly; Figure 7 This is a schematic diagram of the gantry frame's three-dimensional structure; In the diagram, 100 represents the support frame, 110 represents the first guide rail assembly, and 120 represents the second guide rail assembly. 200 is the upper moving plate. 300 is the lower moving plate, 310 is the lower floating plate, and 311 is the floating lifting mechanism. 400 is a gantry crane. 410 is the upper electrode welding head assembly, 411 is the upper welding power source, 412 is the upper electrode block, 413 is the upper electrode head, 414 is the upper linear drive mechanism, and 415 is the upper copper sheet. 420 is the lower electrode welding head assembly, 421 is the lower welding power source, 422 is the lower electrode block, 423 is the lower electrode head, 424 is the lower linear drive mechanism, and 425 is the lower copper sheet. 510 is the first rack, 520 is the first motor, and 530 is the first gear. 610 is the second rack, 620 is the second motor, and 630 is the second gear. 710 is the upper support block, 720 is the upper positioning block, 730 is the upper insulating pad, and 740 is the welding pin. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is for reference. Figure 1-7 Describe this utility model; A gantry automatic welding line includes: The support frame 100 has a first guide rail group 110 and a second guide rail group 120 distributed vertically on the top; the first guide rail group 110 and the second guide rail group 120 each include a pair of symmetrically arranged guide rails; the second guide rail group 120 is located below the first guide rail group 110. The upper movable plate 200 is slidably disposed on the first guide rail group 110 and is driven to slide horizontally on the support frame 100 by the first driving mechanism; the upper movable plate 200 is provided with a plurality of upper limit blocks adapted to the welded parts; The first driving mechanism includes: The first rack 510 is fixedly installed on the inner side wall of the support frame 100; The first motor 520 is vertically fixed on the upper moving plate 200, and the output shaft is provided with a first gear 530 fixedly connected to it. The first gear 530 meshes with the first rack 510.

[0021] The lower moving plate 300 is slidably mounted on the second guide rail group 120 and is driven by the second driving mechanism to slide horizontally on the support frame 100. The lower moving plate 300 is provided with a plurality of lower limit blocks adapted to the welding parts. There is a sliding gap between the top surface of the lower limit block and the top surface of the upper moving plate 200, so that the lower moving plate 300 can slide normally under the upper moving plate 200 after bearing the welding parts.

[0022] The second drive mechanism includes: The second rack 610 is fixedly installed on the inner side wall of the support frame 100 and is parallel to the second guide rail assembly 120; The second motor 620 is fixedly installed at the bottom of the lower moving plate 300, and a second gear 630 is fixedly connected on the output shaft. The second gear 630 meshes with the second rack 610.

[0023] In this case, in addition to using a gear and rack meshing method, the first and second drive mechanisms can also achieve horizontal displacement by using horizontally arranged cylinders, hydraulic cylinders, or electric push rods.

[0024] The tail end of the support frame 100 is located inside the gantry frame 400; On the gantry frame 400, above the upper moving plate 200, there is an upper electrode welding head assembly 410; a plurality of upper electrode heads in the upper electrode welding head assembly 410 move up and down within the gantry frame 400 via an upper linear drive mechanism 414. Inside the gantry frame 400, a lower electrode welding head assembly 420 is provided below the lower moving plate 300; a plurality of lower electrode heads in the lower electrode welding head assembly 420 move up and down inside the gantry frame 400 via a lower linear drive mechanism 424.

[0025] In this case, the upper electrode welding head assembly 410 and the lower electrode welding head assembly 420 are conventional multi-point welding machine structures.

[0026] The upper electrode welding head assembly 410 includes an upper welding power source 411, an upper electrode block 412, and multiple upper electrode heads 413; The upper welding power source is fixedly installed on the gantry 400 near the top via an upper welding power source bracket; The upper electrode block 412 is fixedly connected to the piston rod end of the upper linear drive mechanism 414 via an upper copper block, and the upper copper block is electrically connected to the upper welding power source via multiple upper copper sheets 415.

[0027] The lower electrode welding head assembly 420 includes a lower welding power source 421, a lower electrode block 422, multiple lower electrode heads 423, and a lower linear drive mechanism 424; The lower welding power source is fixedly installed at the bottom of the gantry 400 via a lower welding power source bracket, located below the lower movable plate 300; The lower linear drive mechanism 424 is vertically fixed at the bottom of the gantry 400, the piston rod end moves upward, and a lifting plate is fixedly connected to it; The lower electrode block is fixedly mounted on the lifting plate and electrically connected to the lower welding power supply through multiple lower copper foils 425; Multiple lower electrode heads 423 are fixedly mounted on the top of the lower electrode block, corresponding to the upper electrode head 413.

[0028] The upper limit block in this case includes: Multiple upper support blocks 710 are provided and fixedly installed on the top surface of the upper movable plate 200, and are adapted to the positioning holes near the edge of the welded parts. The upper support blocks 710 are made of nylon and have a cross-section at the top that is wider at the bottom and narrower at the top.

[0029] Multiple upper positioning blocks 720 are provided, which are fixedly connected to the top surface of the upper movable plate 200 and located within the multiple upper support blocks 710; Multiple upper insulating pads 730 are provided and are respectively fixedly installed on the top of the upper positioning block 720; the top of the upper insulating pad 730 is provided with multiple welding pins 740 that are adapted to the welding parts. The welding pins 740 are made of metal, and the lower upper insulating pad 730 is made of insulating material.

[0030] The upper movable plate 200 is provided with multiple first hollow openings to facilitate improved welding heat dissipation efficiency.

[0031] In this case, the structure and function of the lower limit block are the same as those of the upper limit block, so they will not be described again. The difference between the lower moving plate 300 and the upper moving plate 200 is that the lower moving plate 300 has a second cutout in the middle. The second hollow opening is provided with a lower floating plate 310 that moves up and down; The lower limit block is located on the top surface of the lower floating plate 310.

[0032] The lower floating plate 310 is driven to reciprocate up and down in the lower moving plate 300 by a floating lifting mechanism 311 fixedly mounted on the lower moving plate 300.

[0033] In this case, the floating lifting mechanism 311 includes a floating cylinder, a floating hydraulic cylinder, or a floating electric push rod.

[0034] The continuous welding process for multiple welded parts includes: Step 1: Place the part to be welded on the upper limit block, and start the first motor 520 of the upper moving plate 200 to drive the upper moving plate 200 to slide towards the gantry 100. Step 2: After the upper moving plate 200 slides to the set position, multiple lower electrode heads 423 move upward through the lower linear drive mechanism 424 until multiple pointed lower electrode heads 423 extend into the corresponding positions of the workpiece to be welded. Then, multiple upper electrode heads 413 press down respectively to cooperate with the lower electrode heads 423 for welding.

[0035] Step 3: After the welding of the part to be welded on the top of the upper moving plate 200 is completed, the upper moving plate 200 retracts, and the lower moving plate 300 slides towards the gantry 100 carrying the part to be welded on the top. Step four: After the lower moving plate 300 reaches the set position, the lower floating plate 310 rises, raising the workpiece to be welded to the same height as the top of the upper moving plate 200. Multiple lower electrode heads 423 and multiple upper electrode heads 413 then perform the same welding action as in step two. By adjusting the lower floating plate 310, the need for height adaptation between the lower electrode heads 423 and upper electrode heads 413 due to differences in the height of the workpiece is avoided.

[0036] Regarding the information disclosed in this case, the following points need to be clarified: (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case; other structures can refer to the general design. (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments; The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. A gantry automatic welding line, characterized in that, include: The support frame (100) has a first guide rail group (110) and a second guide rail group (120) distributed vertically on the top. The upper movable plate (200) is slidably disposed on the first guide rail group (110) and is driven by the first driving mechanism to slide horizontally on the support frame (100); the upper movable plate (200) is provided with a plurality of upper limit blocks adapted to the welded parts; The lower moving plate (300) is slidably disposed on the second guide rail group (120) and driven to slide horizontally on the support frame (100) by the second driving mechanism; the lower moving plate (300) is provided with a plurality of lower limit blocks adapted to the welded parts; a sliding gap is provided between the top surface of the lower limit block and the top surface of the upper moving plate (200).

2. The gantry automatic welding line according to claim 1, characterized in that, The tail end of the support frame (100) is located inside the gantry frame (400); On the gantry (400), an upper electrode welding head assembly (410) is provided above the upper moving plate (200); a plurality of upper electrode heads in the upper electrode welding head assembly (410) move up and down within the gantry (400) via an upper linear drive mechanism (414); Inside the gantry (400), a lower electrode welding head assembly (420) is provided below the lower moving plate (300); a plurality of lower electrode heads in the lower electrode welding head assembly (420) move up and down inside the gantry (400) via a lower linear drive mechanism (424).

3. The gantry automatic welding line according to claim 1, characterized in that, The first driving mechanism includes: The first rack (510) is fixedly installed on the inner side wall of the support frame (100); The first motor (520) is vertically fixed on the upper moving plate (200), and the output shaft is provided with a first gear (530) fixedly connected to it. The first gear (530) meshes with the first rack (510).

4. The gantry automatic welding line according to claim 1, characterized in that... The lower moving plate (300) and the second driving mechanism include: The second rack (610) is fixedly installed on the inner side wall of the support frame (100) and is parallel to the second guide rail assembly (120); The second motor (620) is fixedly installed at the bottom of the lower moving plate (300), and a second gear (630) is fixedly connected on the output shaft. The second gear (630) meshes with the second rack (610).

5. The gantry automatic welding line according to claim 1, characterized in that, The upper limit block includes: Multiple upper support blocks (710) are provided and are fixedly installed on the top surface of the upper movable plate (200), and are adapted to the positioning holes near the edge of the welded part.

6. The gantry automatic welding line according to claim 5, characterized in that, The top cross section of the upper support block (710) has a shape that is wider at the bottom and narrower at the top.

7. The gantry automatic welding line according to claim 5, characterized in that, The upper limit block also includes: Multiple upper positioning blocks (720) are provided, which are fixedly connected to the top surface of the upper movable plate (200) and located within multiple upper support blocks (710); Multiple upper insulating pads (730) are provided, and are respectively fixedly installed on the top of the upper positioning block (720); the top of the upper insulating pad (730) is provided with multiple welding pins (740) that are adapted to the welding parts.

8. The gantry automatic welding line according to claim 1, characterized in that, The upper movable plate (200) is provided with multiple first hollow openings.

9. The gantry automatic welding line according to claim 1, characterized in that, The lower movable plate (300) has a second hollow opening in the middle; The second hollow opening is provided with a lower floating plate (310) that moves up and down. The lower limit block is disposed on the top surface of the lower floating plate (310).

10. The gantry automatic welding line according to claim 9, characterized in that, The lower floating plate (310) is driven to move up and down in the lower moving plate (300) by a floating lifting mechanism (311) fixedly mounted on the lower moving plate (300).

Images