A piston engine gas tank fitting welding fixture and equipment

Abstract

The present application relates to the field of welding, especially to a piston engine gas tank accessory welding clamp and equipment, including second tank body fixing device and second accessory fixing device; the second accessory fixing device includes handle positioning assembly, machine plate positioning assembly, switch foot connecting pipe supporting assembly, handlebar positioning assembly and drainage connecting pipe positioning assembly; one side of the second tank body fixing device is provided with the handle positioning assembly, and the other side of the second tank body fixing device is provided with the machine plate positioning assembly, the switch foot connecting pipe supporting assembly, the handlebar positioning assembly and the drainage connecting pipe positioning assembly; the handle positioning assembly is located at the left side of the second fixing station and faces the second fixing station; the machine plate positioning assembly and the switch foot connecting pipe supporting assembly are located at the bottom of the second fixing station; the handlebar positioning assembly is located at the front side of the right part of the second fixing station, and the drainage connecting pipe positioning assembly is located above the rear side of the right part of the second fixing station; the present application completes positioning of multiple accessories in one station, and improves welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding, and in particular to a welding fixture and equipment for piston engine gas tank accessories. Background Technology

[0002] Currently, air compressors are devices used to compress gases and are widely used in various industries. As an essential component of air compressors, the market demand for air receivers is increasing. However, the current manufacturing process for air receivers is still very outdated, especially the supports around the outer perimeter of the tank. These supports are numerous, and each has a different shape and installation location. In existing technology, each support is welded manually, one by one. However, this method not only fails to guarantee the precision of the welding, but also results in inconsistent placement of each support on the tank body, and the welding quality is also affected by the skill level of the workers, leading to inconsistent results.

[0003] Existing gas tank welding equipment, such as the Chinese utility model patent (publication number: CN209632429U, publication date: 20191115), discloses a gas tank welding fixture, including a fixture worktable. The worktable is equipped with a fixed seat assembly and a movable seat assembly for positioning the gas tank. The fixed seat assembly and the movable seat assembly are arranged opposite each other. A limiting rod for positioning the gas tank is also provided on the worktable, positioned between the fixed seat assembly and the movable seat assembly. This patent utilizes the combined action of the fixed seat assembly, the movable seat assembly, and the limiting rod to position the gas tank. Combined with a welding robot, the entire gas tank can be welded in one operation, effectively improving production efficiency and ensuring product quality. Furthermore, this gas tank welding fixture has a simple structure, is easy to operate, has low manufacturing cost, and is easy to promote and use.

[0004] However, the above welding equipment has the following problems: when welding accessories, the gas tank can only weld one accessory at a time, resulting in low welding efficiency. Furthermore, when welding different accessories, the gas tank and accessories need to be repositioned and repeatedly disassembled, which further reduces the welding efficiency. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a welding fixture and equipment for piston engine gas tank accessories, which completes the installation and positioning of the handle, machine plate, pull handle, and drain pipe on the gas tank in one workstation, so that the gas tank and accessories only need to be positioned once to complete the welding.

[0006] To achieve the objectives of this invention, the following technical solutions are adopted:

[0007] A welding fixture for piston engine gas tank accessories includes a fixture bridge plate, a second fixed station provided on the fixture bridge plate, the second fixed station being used to fix the top of the tank body toward the fixture bridge plate; a second tank body fixing device and a second accessory fixing device are provided in the second fixed station.

[0008] The second accessory fixing device includes a handle positioning assembly, a machine plate positioning assembly, a switch foot pipe support assembly, a handle positioning assembly, and a drain pipe positioning assembly; the handle positioning assembly is provided on one side of the second tank fixing device, and the machine plate positioning assembly, switch foot pipe support assembly, handle positioning assembly, and drain pipe positioning assembly are provided on the other side of the second tank fixing device; the handle positioning assembly is located on the left side of the second fixing station and faces the second fixing station; the machine plate positioning assembly and the switch foot pipe support assembly are located at the bottom of the second fixing station and face the second fixing station; the handle positioning assembly is located on the right front side of the second fixing station, and the drain pipe positioning assembly is located on the right rear side above the second fixing station;

[0009] The handle positioning assembly is used to support and position the handle; the plate positioning assembly is used to clamp the front and rear plates; the switch foot pipe support assembly is used to support and position the switch foot pipe; the handle positioning assembly is used to position the head end of the handle, clamp the middle part of the handle, and fix the tail end of the handle; the drain pipe positioning assembly is used to position and clamp the drain pipe onto the tank body.

[0010] Preferably, the handle positioning assembly includes a handle positioning cylinder, a handle bottom clamping plate, a handle side limiting plate, and a handle end limiting clamping plate. The handle positioning cylinder is inclined and faces the second fixed position. The handle bottom clamping plate is provided at the output end of the handle positioning cylinder. Handle side limiting plates are provided on the upper and lower sides of the handle bottom clamping plate. The top of the handle side limiting plates is higher than the handle bottom clamping plate. The distance between the two handle side limiting plates matches the width of the handle. Handle end limiting clamping plates are provided on the front and rear sides of the handle bottom clamping plate. The two handle end limiting clamping plates open outward, so that the upper opening is larger than the lower opening. The size of the opening matches the inclination angle of the two sides of the handle. The inner shape of the upper part of the handle end limiting clamping plate is an arc shape adapted to the bending of the handle.

[0011] Preferably, the board positioning assembly includes a board positioning frame, board positioning posts, board clamping cylinders, and board clamping plates. The board positioning frame is located at the bottom of the second fixed station. Board support platforms are provided on the front and rear sides of the top of the board positioning frame, which are used to support the board from below. Board positioning posts are provided on the left and right sides of the board support platforms. The board positioning posts extend longitudinally, and the number of board positioning posts corresponds to the number of through holes on the board. The board positioning posts are used to extend into the through holes of the board to position the board. Board clamping cylinders are provided on the front and rear sides of the board positioning frame. The board clamping cylinders are arranged longitudinally upwards, and the output end of the board clamping cylinder is provided with a board clamping plate, which is located above the board support platform. The bottom surface of the board clamping plate is provided with grooves corresponding to the board positioning posts.

[0012] Preferably, the switch foot connector support assembly includes a switch foot connector support base and a switch foot connector positioning post. The switch foot connector support base is fixedly installed, and the switch foot connector positioning post is provided on the upper surface of the switch foot connector support base. The switch foot connector positioning post includes a switch foot connector support part and a switch foot connector positioning part. The width of the switch foot connector support part is greater than the outer diameter of the switch foot connector. The longitudinally extending switch foot connector positioning part is provided above the switch foot connector support part. The switch foot connector positioning part is cylindrical, and the outer diameter of the cylinder is adapted to the inner diameter of the switch foot connector. The top of the switch foot connector positioning part is chamfered.

[0013] Preferably, the handle positioning assembly includes a handle head positioning seat, a handle middle clamping cylinder, a handle middle gripper, and a handle tail positioning gripper. The handle head positioning seat is mounted on the fixture bridge plate, and a handle head limiting groove extending in the front-rear direction is provided on the upper surface of the handle head positioning seat. The width of the handle head limiting groove is adapted to the outer diameter of the handle head. The handle middle clamping cylinder is located on the front side of the second fixed station. The handle middle clamping cylinder is arranged in a transverse direction, and a pair of handle middle grippers are provided at the output end of the handle middle clamping cylinder. A handle clamping groove is provided on the inner side of the handle middle gripper, and the handle middle gripper is used to clamp the middle part of the handle. The handle tail positioning gripper is fixedly mounted, and a handle tail positioning groove is provided on the side of the handle tail positioning gripper facing the second fixed station.

[0014] Preferably, the drain pipe positioning assembly includes a drain pipe positioning drive component, a drain pipe positioning rotating shaft, a drain pipe positioning pressure arm, and a drain pipe positioning clamping column. The drain pipe positioning drive component is arranged longitudinally, and the drain pipe positioning rotating shaft is located at the output end of the drain pipe positioning drive component. The drain pipe positioning rotating shaft is arranged transversely, and the lower end of the drain pipe positioning pressure arm is located on the drain pipe positioning rotating shaft. The drain pipe positioning pressure arm is located behind the second fixed station. The drain pipe positioning drive component drives the drain pipe positioning rotating shaft to rotate, causing the drain pipe positioning pressure arm to flip in the front-back direction. The drain pipe positioning clamping column is located on the side of the drain pipe positioning pressure arm facing the second fixed station. The drain pipe positioning clamping column includes a drain pipe clamping part and a drain pipe positioning part. The width of the drain pipe clamping part is greater than the outer diameter of the drain pipe, and the drain pipe clamping part is used to clamp the top of the drain pipe. The drain pipe positioning part is located below the drain pipe clamping part. The drain pipe positioning part is cylindrical, and the diameter of the cylinder is adapted to the inner diameter of the drain pipe. The bottom of the drain pipe positioning part is chamfered.

[0015] Preferably, the second accessory fixing device further includes a tank tail end support assembly and a tank head end support assembly; the tank tail end support assembly is located on one side of the handle positioning assembly; the tank head end support assembly is located on one side of the machine plate positioning assembly; the tank tail end support assembly and the tank head end support assembly are located at the bottom of the second fixed station and face the second fixed station; the tank tail end support assembly is used to support and position the tail end of the tank; the tank head end support assembly is used to support and position the head end of the tank.

[0016] Preferably, the tank tail end support assembly includes a tank tail end support cylinder, a tank tail end support plate, and a tank tail end support block; the tank tail end support cylinder is arranged longitudinally and faces the second fixed station, the output end of the tank tail end support cylinder is provided with the tank tail end support plate, the tank tail end support plate is located at the bottom of the second fixed station, the tank tail end support plate includes a tail end connecting part and a tail end support part, the tail end connecting part is arranged laterally and its lower end is connected to the tank tail end support cylinder, the front and rear ends of the tail end connecting part are provided with inclined tail end support parts and the upper ends of the two tail end support parts are opened outward, and the tank tail end support block is provided on the inner side of the tail end support part;

[0017] The tank head end support assembly includes a tank head end support cylinder, a tank head end support plate, and a tank head end support block. The tank head end support cylinder is arranged longitudinally, and the output end of the tank head end support cylinder is provided with the tank head end support plate. The tank head end support plate extends to the bottom of the second fixed station. The tank head end support plate includes a head end connecting part and a head end support part. The head end connecting part extends in the front-back direction, and the front and rear ends of the head end connecting part are provided with inclined head end support parts. The upper end of the head end support part opens outward, and the inner side of the head end support part is provided with a tank head end support block.

[0018] Preferably, the second tank fixing device includes a tank sidewall positioning block, a tank clamping cylinder, a tank clamping arm, and a tank clamping block; the top surface of the tank sidewall positioning block is an arc shape that adapts to the curvature of the tank sidewall; a tank clamping cylinder is provided below the tank sidewall positioning block, and the tank clamping cylinder is provided with two output ends, one in front and one in back, and a tank clamping arm is provided on each of the two output ends. The two tank clamping arms are arranged facing each other, and the tank sidewall positioning block is located between the two tank clamping arms; the tank clamping arm includes an installation part and a clamping part, the lower end of the installation part is provided on the tank clamping cylinder, and the upper end of the installation part is provided with the clamping part. The clamping part includes at least two clamping bars arranged horizontally, the clamping bars extend longitudinally, and the upper and lower ends of the clamping bars are bent inward in the clamping direction, and a tank clamping block is provided on the upper and lower ends.

[0019] A welding equipment for piston engine gas tank accessories includes the aforementioned fixture, welding robot, and positioner, with both ends of the fixture bridge plate mounted on the positioner; the welding robot is located on one side of the positioner.

[0020] In summary, the advantages of this invention are: the installation and positioning of the handle, machine plate, pull handle, and drain pipe on the gas tank are completed within a single workstation, allowing the gas tank and accessories to be positioned only once before welding. Before positioning the gas tank, the switch foot pipe is positioned using the switch foot pipe support assembly. Then, the tank body is horizontally positioned within the workstation using the second tank body fixing device, facilitating the finding of the reference surface and improving the accuracy of accessory positioning and welding quality. Finally, the handle positioning assembly, machine plate positioning assembly, pull handle positioning assembly, and drain pipe positioning assembly respectively position the handle, machine plate, pull handle, and drain pipe, achieving accessory positioning and ensuring that multiple accessories can be welded in one workstation, thus improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure for assembling the gas storage tank at the second fixed station.

[0022] Figure 2 This is a schematic diagram of a 24L gas storage tank.

[0023] Figure 3 This is a structural diagram of the second fixed workstation.

[0024] Figure 4 This is a structural diagram of the second fixed workstation.

[0025] Figure 5 This is a structural diagram of the board positioning assembly.

[0026] Figure 6 for Figure 5 A magnified view of a section at point B in the middle.

[0027] Figure 7 This is a structural diagram of the second fixed workstation. Detailed Implementation

[0028] A welding device for piston compressor gas tank accessories includes a fixture, a welding robot, and a positioner. The fixture bridge 5 has its two ends mounted on the positioner; the welding robot is located on one side of the positioner.

[0029] like Figure 1 As shown, the fixture includes a fixture bridge plate 5, on which a second fixed station is provided. The second fixed station is used to fix the top of the tank towards the fixture bridge plate 5. A second tank fixing device 8 and a second accessory fixing device 9 are provided in the second fixed station.

[0030] like Figure 2 As shown, the volume of the gas storage tank in this embodiment is 24L. The gas storage tank 10 includes a tank body 101, which is a horizontally arranged cylindrical shape. End caps 102 are provided at both ends of the tank body 101, with a nameplate 103 on the end cap 102 at the head end. A switch foot connector 104 and a three-way connector 105 are provided on the upper surface of the tank body 101 near the head end. A handle 106 is provided on one side of the head end of the tank body 101. A machine plate 107 for mounting a screw compressor is provided on both the front and rear sides of the upper surface of the middle part of the tank body, with a through hole running vertically through the machine plate. A handle 108 is provided on the upper surface of the tank body near the tail end. A foot support connector 109 and a drain connector 110 are provided on the lower surface of the tank body near the head end. A wheel bracket 111 for mounting wheels is provided on the lower surface of the tank body near the tail end.

[0031] like Figure 3 and Figure 4 As shown, the second tank fixing device 8 includes a tank sidewall positioning block 61, a tank clamping cylinder 62, a tank clamping arm 63, and a tank clamping block 64. The top surface of the tank sidewall positioning block 61 is an arc shape that conforms to the curvature of the tank sidewall, facilitating the support and positioning of the tank side. The tank clamping cylinder 62 is located below the tank sidewall positioning block 61. The tank clamping cylinder 62 has two output ends, one at the front and one at the rear. A tank clamping arm 63 is installed on each of the two output ends. The two tank clamping arms 63 are arranged facing each other, and the tank sidewall positioning block 61 is located between the two tank clamping arms 63. The tank clamping arm 63 includes a mounting part 631 and a clamping part 632. The lower end of the mounting part 631 is mounted on the tank clamping cylinder 62, and the upper end of the mounting part 631 is mounted on the clamping part 632. The clamping part 632 includes at least two clamping bars 6321 arranged horizontally. The clamping bars 6321 extend longitudinally, and the upper and lower ends of the clamping bars 6321 are bent inward in the clamping direction. Tank clamping blocks 64 are provided on the upper and lower ends.

[0032] The second tank fixing device 8 is used as follows: The gas storage tank is placed horizontally in the second tank fixing device 8, and the side wall of the bottom of the tank is made to fit with the side wall positioning block 61. The tank is initially positioned by the side wall positioning block 61. Then, the axial position of the tank is adjusted so that it corresponds to the position of the part to be welded. Then, the tank clamping cylinder 62 drives the front and rear tank clamping arms 63 to move towards the tank, clamping the front and rear sides of the tank. When clamping, the tank clamping block 64 presses against the side wall of the tank.

[0033] The second tank fixing device 8 solves the problem in the prior art where the clamping device causes a large area of ​​obstruction to the side of the tank during clamping. While this ensures the tank's position is fixed, it makes it difficult for the welding torch to enter the welding position during subsequent welding, which is detrimental to the welding of other accessories on the tank. The advantage of the second tank fixing device 8 is that the clamping part 632 includes at least two clamping bars 6321 arranged horizontally, so that the clamping force is distributed on the left and right sides of the tank, which helps to improve the stability of clamping and reduces the obstruction to the tank, making it easier to weld other accessories later. The top surface of the tank side wall positioning block 61 is an arc shape that adapts to the curvature of the tank side wall, so that the tank side wall can be completely fitted against the arc-shaped top surface, which helps to support and position the tank side wall and ensure the initial positioning effect of the tank. The upper and lower ends of the clamping bars 6321 are bent in the clamping direction, which helps to increase the contact area between the tank clamping block 64 and the tank side wall, improving the clamping effect. The two tank clamping arms 63, one at the front and one at the back, are driven simultaneously by the tank clamping cylinder 62. This ensures that the tank clamping blocks 64 are pressed firmly against the side wall of the tank, preventing the tank from moving and ensuring that its position remains fixed. This also allows the parts to be welded to be positioned on both the upper and lower surfaces, facilitating their installation and positioning.

[0034] like Figure 1 As shown, the second accessory fixing device 9 includes a handle positioning assembly 91, a machine plate positioning assembly 93, a switch foot connector support assembly 95, a handle positioning assembly 96, and a drain pipe positioning assembly 97. The handle positioning assembly 91 is located on one side of the second tank fixing device 8, and the machine plate positioning assembly 93, switch foot connector support assembly 95, handle positioning assembly 96, and drain pipe positioning assembly 97 are located on the other side of the second tank fixing device 8. The handle positioning assembly 91 is located on the left side of the second fixing station and faces the second fixing station. The machine plate positioning assembly 93 and the switch foot connector support assembly 95 are located at the bottom of the second fixing station and face the second fixing station. The handle positioning assembly 96 is located on the right front side of the second fixing station, and the drain pipe positioning assembly 97 is located on the right rear side above the second fixing station.

[0035] Handle positioning assembly 91 is used to support and position the handle. Platen positioning assembly 93 is used to clamp the front and rear platens. Switch foot connector support assembly 95 is used to support and position the switch foot connector. Handle positioning assembly 96 is used to position the head end of the handle, clamp the middle part of the handle, and fix the tail end of the handle. Drain connector positioning assembly 97 is used to position and clamp the drain connector onto the tank body.

[0036] like Figure 3 As shown, the handle positioning assembly 91 includes a handle positioning cylinder 911, a handle bottom clamping plate 912, a handle side limiting plate 913, and a handle end limiting clamping plate 914. The handle positioning cylinder 911 is inclined and faces the second fixed position. The handle bottom clamping plate 912 is located at the output end of the handle positioning cylinder 911. The handle side limiting plates 913 are located on the upper and lower sides of the handle bottom clamping plate 912. The top of the handle side limiting plates 913 is higher than the handle bottom clamping plate 912, and the distance between the two handle side limiting plates 913 matches the width of the handle. The handle end limiting clamping plates 914 are located on the front and rear sides of the handle bottom clamping plate 912. The two handle end limiting clamping plates 914 open outward, so that the upper opening is larger than the lower opening, and the size of the opening matches the inclination angle of the two sides of the handle. The inner shape of the upper end of the handle end limiting clamping plate 914 is an arc shape that adapts to the bending of the handle.

[0037] When positioning the handle, the lower part of the handle is placed on the upper section of the bottom clamping plate 912 of the handle. At the same time, the left and right sides of the handle are limited by the side limiting plate 913 of the handle, and the front and rear ends of the handle are limited by the end limiting clamping plate 914 of the handle. The inner side of the end limiting clamping plate 914 of the handle fits against the bend at the upper end of the handle, further ensuring the positioning effect of the handle.

[0038] like Figures 4 to 6 As shown, the board positioning assembly 93 includes a board positioning frame 931, board positioning posts 932, board clamping cylinder 933, and board clamping plate 934. The board positioning frame 931 is located at the bottom of the second fixed station. Board support platforms 9311 are provided on the front and rear sides of the top of the board positioning frame 931, which are used to support the board from below. Board positioning posts 932 are provided on the left and right sides of the board support platforms 9311. The board positioning posts 932 extend longitudinally, and the number of board positioning posts 932 corresponds to the number of through holes on the board. The board positioning posts 932 are used to extend into the through holes of the board to position the board. Machine plate clamping cylinders 933 are provided on both the front and rear sides of the machine plate positioning frame 931. The machine plate clamping cylinders 933 are arranged longitudinally upward. A machine plate clamping plate 934 is provided at the output end of the machine plate clamping cylinder 933. The machine plate clamping plate 934 is located above the machine plate support platform 9311. The bottom surface of the machine plate support platform 9311 is provided with a groove corresponding to the machine plate positioning post 932.

[0039] When the machine plate is positioned, the operator places the machine plate on the machine plate support platform 9311 and aligns the through hole of the machine plate with the machine plate positioning post 932. Then, the machine plate clamping cylinder 933 drives the machine plate clamping plate 934 to move downward, so that the machine plate clamping plate 934 presses on the upper end surface of the machine plate. At the same time, the groove on the machine plate clamping plate 934 aligns with the machine plate positioning post 932, clamping the machine plate onto the machine plate support platform 9311.

[0040] like Figure 4 As shown, the switch foot connector support assembly 95 includes a switch foot connector support base 951 and a switch foot connector positioning post 952. The switch foot connector support base 951 is fixedly installed, and the switch foot connector positioning post 952 is provided on the upper end surface of the switch foot connector support base 951. The switch foot connector positioning post 952 includes a switch foot connector support portion 9521 and a switch foot connector positioning portion 9522. The width of the switch foot connector support portion 9521 is greater than the outer diameter of the switch foot connector. A longitudinally extending switch foot connector positioning portion 9522 is provided above the switch foot connector support portion 9521. The switch foot connector positioning portion 9522 is cylindrical, and the outer diameter of the cylinder is adapted to the inner diameter of the switch foot connector. The top of the switch foot connector positioning portion 9522 is chamfered.

[0041] When the switch foot connector is supported, the interface at the bottom of the switch foot connector engages with the switch foot connector positioning part 9522 of the switch foot connector positioning post 952, and moves downward along the switch foot connector positioning part 9522 until the bottom surface of the switch foot connector contacts the switch foot connector support part 9521, thus completing the positioning and support of the switch foot connector.

[0042] like Figure 4 As shown, the handle positioning assembly 96 includes a handle head positioning seat 961, a handle middle clamping cylinder 962, a handle middle gripper 963, and a handle tail positioning gripper 964. The handle head positioning seat 961 is mounted on the fixture bridge plate 5. A handle head limiting groove 9611 extending in the front-rear direction is provided on the upper surface of the handle head positioning seat 961. The width of the handle head limiting groove 9611 is adapted to the outer diameter of the handle head. The handle middle clamping cylinder 962 is located on the front side of the second fixed station. The handle middle clamping cylinder 962 is arranged laterally. A pair of handle middle grippers 963 are provided at the output end of the handle middle clamping cylinder 962. A handle clamping groove is provided on the inner side of the handle middle gripper 963, which is used to clamp the middle part of the handle. The handle tail end positioning claw 964 is fixedly set, and the handle tail end positioning claw 964 is provided with a handle tail end positioning groove 9641 on the side facing the second fixed station.

[0043] When positioning the handle, first place the head end of the handle into the handle head end limiting groove 9611 of the handle head end positioning seat 961, and then place the tail end of the handle into the handle tail end positioning groove 9641 of the handle tail end positioning claw 964. The middle clamping cylinder 962 drives the middle clamping claw 963 of the handle to move, and the middle clamping claw 963 clamps the middle of the handle, thus completing the positioning and clamping of the handle.

[0044] like Figure 4 As shown, the drain pipe positioning assembly 97 includes a drain pipe positioning drive component 971, a drain pipe positioning rotating shaft 972, a drain pipe positioning pressure arm 973, and a drain pipe positioning clamping column 974. The drain pipe positioning drive component 971 is arranged longitudinally, and the drain pipe positioning rotating shaft 972 is provided at the output end of the drain pipe positioning drive component 971. The drain pipe positioning rotating shaft 972 is arranged transversely, and the lower end of the drain pipe positioning pressure arm 973 is provided on the drain pipe positioning rotating shaft 972. The drain pipe positioning pressure arm 973 is located behind the second fixed position. The drain pipe positioning drive component 971 drives the drain pipe positioning rotating shaft 972 to rotate, causing the drain pipe positioning pressure arm 973 to flip in the front-back direction. A drain pipe positioning clamping post 974 is provided on the upper end of the drain pipe positioning clamping arm 973 facing the second fixed position. The drain pipe positioning clamping post 974 includes a drain pipe clamping part 9741 and a drain pipe positioning part 9742. The width of the drain pipe clamping part 9741 is greater than the outer diameter of the drain pipe, and the drain pipe clamping part 9741 is used to clamp the top of the drain pipe. The drain pipe positioning part 9742 is provided below the drain pipe clamping part 9741. The drain pipe positioning part 9742 is cylindrical, and the diameter of the cylinder is adapted to the inner diameter of the drain pipe. The bottom of the drain pipe positioning part 9742 is chamfered.

[0045] When positioning the drain pipe, the drain pipe is manually placed on the drain port of the tank. Then, the drain pipe positioning drive component 971 drives the drain pipe positioning shaft 972 to rotate, causing the drain pipe positioning pressure arm 973 to flip in the front and back direction. This extends the drain pipe positioning part 9742 of the drain pipe positioning clamping column 974 into the top of the drain pipe until the drain pipe clamping part 9741 is pressed against the upper end face of the drain pipe.

[0046] like Figure 1 As shown, the second accessory fixing device 9 also includes a tank tail end support assembly 92 and a tank head end support assembly 94. The tank tail end support assembly 92 is located on one side of the handle positioning assembly 91. The tank head end support assembly 94 is located on one side of the machine plate positioning assembly 93. Both the tank tail end support assembly 92 and the tank head end support assembly 94 are located at the bottom of the second fixed station and face the second fixed station. The tank tail end support assembly 92 is used to support and position the tail end of the tank. The tank head end support assembly 94 is used to support and position the head end of the tank.

[0047] like Figure 3 As shown, the tank tail end support assembly 92 includes a tank tail end support cylinder 921, a tank tail end support plate 922, and a tank tail end support block 923. The tank tail end support cylinder 921 is arranged longitudinally and faces the second fixed station. The tank tail end support plate 922 is provided at the output end of the tank tail end support cylinder 921. The tank tail end support plate 922 is located at the bottom of the second fixed station. The tank tail end support plate 922 includes a tail end connecting part 9221 and a tail end support part 9222. The tail end connecting part 9221 is arranged laterally and its lower end is connected to the tank tail end support cylinder 921. Inclined tail end support parts 9222 are provided at both the front and rear ends of the tail end connecting part 9221, and the upper ends of the two tail end support parts 9222 open outward. The tank tail end support block 923 is provided on the inner side of the tail end support part 9222.

[0048] When the tank tail end support assembly 92 is working, the tank tail end support cylinder 921 drives the tank tail end support plate 922 to move upward, so that the front and rear tail end support parts 9222 move closer to the bottom of the tank until the tank tail end support block 923 fits against the bottom of the tank, thus supporting and positioning the bottom of the tank tail end.

[0049] like Figure 7 As shown, the tank head end support assembly 94 includes a tank head end support cylinder 941, a tank head end support plate 942, and a tank head end support block 943. The tank head end support cylinder 941 is arranged longitudinally, and the tank head end support plate 942 is provided at the output end of the tank head end support cylinder 941. The tank head end support plate 942 extends to the bottom of the second fixed station. The tank head end support plate 942 includes a head end connecting part 9421 and a head end support part 9422. The head end connecting part 9421 extends in the front-rear direction, and inclined head end support parts 9422 are provided at both the front and rear ends of the head end connecting part 9421. The upper end of the head end support part 9422 opens outward, and the tank head end support block 943 is provided on the inner side of the head end support part 9422.

[0050] When the tank head end support assembly 94 is working, the tank head end support cylinder 941 drives the tank head end support plate 942 to move upward, so that the front and rear head end support parts 9422 move closer to the bottom of the tank until the tank head end support block 943 fits against the bottom of the tank, thus supporting and positioning the bottom of the tank head end.

[0051] The second tank fixing device 8 and the second accessory fixing device 9 work together to solve the problem of low welding efficiency caused by the inability to weld only one accessory at a time when welding accessories from the gas tank. Furthermore, the need to reposition the gas tank and accessories and repeatedly disassemble and reassemble them when welding different accessories further reduces welding efficiency. The advantage of the second tank fixing device 8 and the second accessory fixing device 9 is that the installation and positioning of the handle, machine plate, pull handle, and drain pipe on the gas tank can be completed in one workstation, allowing the gas tank and accessories to be positioned only once before welding. Before positioning the gas tank, the switch foot pipe is positioned using the switch foot pipe support assembly 95. Then, the second tank fixing device 8 horizontally positions the tank in the workstation, facilitating the finding of the reference surface and improving the accuracy of accessory positioning and welding quality. Finally, the handle positioning assembly 91, machine plate positioning assembly 93, pull handle positioning assembly 96, and drain pipe positioning assembly 97 respectively position the handle, machine plate, pull handle, and drain pipe, achieving accessory positioning and ensuring that multiple accessories can be welded in one workstation, thus improving production efficiency.

Claims

1. A welding fixture for piston engine gas tank accessories, characterized in that, Includes a clamping bridge plate (5), on which a second fixed station is provided. The second fixed station is used to fix the top of the tank towards the clamping bridge plate (5). The second fixed station is provided with a second tank fixing device (8) and a second accessory fixing device (9). The second accessory fixing device (9) includes a handle positioning assembly (91), a machine plate positioning assembly (93), a switch foot pipe support assembly (95), a handle positioning assembly (96), and a drain pipe positioning assembly (97); a handle positioning assembly (91) is provided on one side of the second tank fixing device (8), and a machine plate positioning assembly (93), a switch foot pipe support assembly (95), a handle positioning assembly (96), and a drain pipe positioning assembly (97) are provided on the other side of the second tank fixing device (8); the handle positioning assembly (91) is located on the left side of the second fixing station and faces the second fixing station; the machine plate positioning assembly (93) and the switch foot pipe support assembly (95) are located at the bottom of the second fixing station and face the second fixing station; the handle positioning assembly (96) is located on the right front side of the second fixing station, and the drain pipe positioning assembly (97) is located on the right rear side above the second fixing station; The handle positioning assembly (91) is used to support and position the handle; the plate positioning assembly (93) is used to clamp the plate on the front and rear sides; The switch foot connector support assembly (95) is used to support and position the switch foot connector; the handle positioning assembly (96) is used to position the head end of the handle, clamp the middle part of the handle, and fix the tail end of the handle; the drain connector positioning assembly (97) is used to position and clamp the drain connector onto the tank body; The handle positioning assembly (91) includes a handle positioning cylinder (911), a handle bottom clamping plate (912), a handle side limiting plate (913), and a handle end limiting clamping plate (914). The handle positioning cylinder (911) is inclined and faces the second fixed position. The handle bottom clamping plate (912) is provided at the output end of the handle positioning cylinder (911). The handle side limiting plates (913) are provided on the upper and lower sides of the handle bottom clamping plate (912). The top of the handle side limiting plate (913) is... The distance between the two handle side limiting plates (913) is higher than the bottom pressing plate (912) of the handle, and matches the width of the handle; handle end limiting pressing plates (914) are provided on the front and rear sides of the bottom pressing plate (912) of the handle, and the two handle end limiting pressing plates (914) open outward, so that the upper opening is larger than the lower opening, and the size of the opening matches the inclination angle of the two sides of the handle; the inner shape of the upper end of the handle end limiting pressing plate (914) is an arc shape that adapts to the bending of the handle; The board positioning assembly (93) includes a board positioning frame (931), board positioning posts (932), board clamping cylinder (933), and board clamping plate (934); the board positioning frame (931) is located at the bottom of the second fixed station, and board support platforms (9311) are provided on the front and rear sides of the top of the board positioning frame (931), which are used to support the board from below; board positioning posts (932) are provided on the left and right sides of the board support platform (9311), and the board positioning posts (932) extend longitudinally. The number of 932) corresponds to the number of through holes on the machine plate. The machine plate positioning posts (932) are used to extend into the through holes of the machine plate to position the machine plate. The front and rear sides of the machine plate positioning frame (931) are equipped with machine plate clamping cylinders (933). The machine plate clamping cylinders (933) are arranged longitudinally upward. The output end of the machine plate clamping cylinders (933) is equipped with a machine plate clamping plate (934). The machine plate clamping plate (934) is located above the machine plate support platform (9311). The bottom surface of the machine plate clamping plate (934) is provided with a groove corresponding to the machine plate positioning posts (932). The drain pipe positioning assembly (97) includes a drain pipe positioning drive component (971), a drain pipe positioning rotating shaft (972), a drain pipe positioning pressure arm (973), and a drain pipe positioning clamping column (974). The drain pipe positioning drive component (971) is arranged longitudinally, and the drain pipe positioning rotating shaft (972) is provided at the output end of the drain pipe positioning drive component (971). The drain pipe positioning rotating shaft (972) is arranged transversely, and the lower end of the drain pipe positioning pressure arm (973) is provided on the drain pipe positioning rotating shaft (972). The drain pipe positioning pressure arm (973) is located behind the second fixed position. The drain pipe positioning drive component (971) drives the drain pipe positioning rotating shaft (972) to press the drain pipe positioning pressure arm (973). 72) Rotate to make the drain pipe positioning arm (973) flip in the front and back direction; a drain pipe positioning clamping column (974) is provided on the side of the upper end of the drain pipe positioning arm (973) facing the second fixed position. The drain pipe positioning clamping column (974) includes a drain pipe clamping part (9741) and a drain pipe positioning part (9742). The width of the drain pipe clamping part (9741) is greater than the outer diameter of the drain pipe. The drain pipe clamping part (9741) is used to clamp the top of the drain pipe. A drain pipe positioning part (9742) is provided below the drain pipe clamping part (9741). The drain pipe positioning part (9742) is cylindrical and the diameter of the cylinder is adapted to the inner diameter of the drain pipe. The bottom of the drain pipe positioning part (9742) is chamfered.

2. The welding fixture for a piston engine gas tank accessory according to claim 1, characterized in that, The switch foot connector support assembly (95) includes a switch foot connector support base (951) and a switch foot connector positioning post (952). The switch foot connector support base (951) is fixedly installed. The switch foot connector positioning post (952) is provided on the upper surface of the switch foot connector support base (951). The switch foot connector positioning post (952) includes a switch foot connector support part (9521) and a switch foot connector positioning part (9522). The width of the switch foot connector support part (9521) is greater than the outer diameter of the switch foot connector. The switch foot connector positioning part (9522) is provided on the upper part of the switch foot connector support part (9521). The switch foot connector positioning part (9522) is cylindrical and the outer diameter of the cylinder is adapted to the inner diameter of the switch foot connector. The top of the switch foot connector positioning part (9522) is chamfered.

3. The welding fixture for a piston engine gas tank accessory according to claim 1, characterized in that, The handle positioning assembly (96) includes a handle head end positioning seat (961), a handle middle clamping cylinder (962), a handle middle gripper (963), and a handle tail end positioning gripper (964); the handle head end positioning seat (961) is mounted on the clamping bridge plate (5), and a handle head end limiting groove (9611) extending in the front-rear direction is provided on the upper end surface of the handle head end positioning seat (961), the width of the handle head end limiting groove (9611) being adapted to the outer diameter of the handle head end; the handle middle clamping cylinder (962) includes a handle head end positioning seat (963), a handle middle clamping cylinder (964), a handle tail end positioning cylinder (965), a handle head end positioning seat (966), a handle middle clamping cylinder (966), a handle tail end positioning cylinder (966), a handle head end positioning seat (961), a handle middle clamping cylinder (962), a handle tail end positioning cylinder (963), a handle head end positioning seat (964), a handle tail end positioning cylinder (965 ... tail end positioning cylinder (964), a handle head end positioning seat (961), a handle middle clamping cylinder (962), a handle tail end positioning cylinder (963), a handle tail end positioning cylinder (964), a handle head end positioning seat (961), a handle middle clamping cylinder (962), a handle tail end positioning cylinder (963), a handle tail end positioning cylinder (964), a handle tail end positioning cylinder (965), a handle tail end positioning cylinder (966), a handle tail end positioning cylinder (962), a handle tail end positioning cylinder (963), a handle tail end 62) The middle clamping cylinder (962) of the handle is set in the front side of the second fixed station. The output end of the middle clamping cylinder (962) of the handle is provided with a pair of middle clamping claws (963). The inner side of the middle clamping claws (963) of the handle is provided with a handle clamping groove. The middle clamping claws (963) of the handle are used to clamp the middle part of the handle. The tail end positioning claw (964) of the handle is fixedly set. The tail end positioning claw (964) of the handle is provided with a tail end positioning groove (9641) on the side facing the second fixed station.

4. The welding fixture for a piston engine gas tank accessory according to claim 1, characterized in that, The second accessory fixing device (9) also includes a tank tail end support assembly (92) and a tank head end support assembly (94); the tank tail end support assembly (92) is located on one side of the handle positioning assembly (91); the tank head end support assembly (94) is located on one side of the machine plate positioning assembly (93); the tank tail end support assembly (92) and the tank head end support assembly (94) are located at the bottom of the second fixed station and face the second fixed station; the tank tail end support assembly (92) is used to support and position the tail end of the tank; the tank head end support assembly (94) is used to support and position the head end of the tank.

5. A welding fixture for a piston engine gas tank accessory according to claim 4, characterized in that, The tank tail end support assembly (92) includes a tank tail end support cylinder (921), a tank tail end support plate (922), and a tank tail end support block (923). The tank tail end support cylinder (921) is arranged longitudinally and faces the second fixed station. The output end of the tank tail end support cylinder (921) is provided with the tank tail end support plate (922). The tank tail end support plate (922) is located at the bottom of the second fixed station. 2) Includes a tail end connecting part (9221) and a tail end supporting part (9222). The tail end connecting part (9221) is arranged horizontally and its lower end is connected to the tail end supporting cylinder (921) of the tank body. Inclined tail end supporting parts (9222) are provided at the front and rear ends of the tail end connecting part (9221) and the upper ends of the two tail end supporting parts (9222) are opened outward. A tank body tail end supporting block (923) is provided on the inner side of the tail end supporting part (9222). The tank head end support assembly (94) includes a tank head end support cylinder (941), a tank head end support plate (942), and a tank head end support block (943). The tank head end support cylinder (941) is arranged longitudinally, and the output end of the tank head end support cylinder (941) is provided with the tank head end support plate (942). The tank head end support plate (942) extends to the bottom of the second fixed station. The tank head end support plate (942) includes a head end connecting part (9421) and a head end support part (9422). The head end connecting part (9421) extends in the front-back direction. Inclined head end support parts (9422) are provided at both ends of the head end connecting part (9421). The upper end of the head end support part (9422) opens outward, and the tank head end support block (943) is provided on the inner side of the head end support part (9422).

6. A welding fixture for a piston engine gas tank accessory according to claim 1, characterized in that, The second tank fixing device (8) includes a tank side wall positioning block (61), a tank clamping cylinder (62), a tank clamping arm (63), and a tank clamping block (64); the top surface of the tank side wall positioning block (61) is an arc shape that adapts to the curvature of the tank side wall; a tank clamping cylinder (62) is provided below the tank side wall positioning block (61), and the tank clamping cylinder (62) is provided with two output ends, and a tank clamping arm (63) is provided on both output ends. The two tank clamping arms (63) are arranged facing each other, and the tank side wall positioning block (61) The clamping arm (63) is located between two tank clamping arms (63); the tank clamping arm (63) includes a mounting part (631) and a clamping part (632). The lower end of the mounting part (631) is provided on the tank clamping cylinder (62), and the upper end of the mounting part (631) is provided with the clamping part (632). The clamping part (632) includes at least two clamping bars (6321) arranged horizontally. The clamping bars (6321) extend longitudinally, and the upper and lower ends of the clamping bars (6321) are bent inward in the clamping direction, and tank clamping blocks (64) are provided on the upper and lower ends.

7. A welding equipment for piston compressor gas tank accessories, characterized in that, The equipment includes a welding fixture for piston engine gas tank accessories as described in claim 1. The equipment also includes a welding robot and a positioner. The two ends of the fixture bridge plate (5) are set on the positioner. The welding robot is located on one side of the positioner.

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