An automatic welding device for the production of special vehicle tanks

Abstract

The present invention discloses an automatic welding device for the production of special vehicle tanks, which relates to the technical field of special vehicle tank welding. The automatic welding device includes a position-changing device, an auxiliary device, and a welding robot. The welding robot is arranged on one side of the position-changing device, and the output end of the welding robot is in transmission connection with the auxiliary device. The output end of the welding robot is provided with a welding head. The position-changing device is used for clamping the tank body. By using the position-changing device to clamp and fix the tank body, the welding of the tank body is ensured to be stable during longitudinal seam welding. During circumferential welding, the tank body is driven to rotate, and the welding robot welds the tank body through the welding head. Through multi-mode welding, the welding diversity of the special vehicle tank is improved. The quality of welding is detected in real time through the auxiliary device to ensure the welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of special vehicle tank welding, and specifically to an automatic welding device for the production of special vehicle tanks. Background Art

[0002] Special vehicle tanks generally refer to tanks used in vehicles with special functions, such as sprinkler trucks, transport tank trucks, special vehicles for tank-type dust particles, etc. In order to ensure the stability of the transportation process, strict requirements are imposed on the welding quality of special vehicle tanks.

[0003] Due to the different operating conditions of special vehicle tanks, the shapes of the tanks are also various, including cylindrical, elliptical, and special-shaped structures, etc., which greatly increases the welding difficulty. Currently, the tank welding equipment adopts manual or semi-automatic forms. The sizes of the tanks are different. During the welding process of small tanks, welding mostly relies on manual labor, and limited by the technical level of the operators, the welding quality cannot be guaranteed. During the welding process of large tanks, due to the large size of the tanks, manual welding is difficult, and safety cannot be guaranteed during the climbing process.

[0004] In addition, in order to ensure the high sealing of the tank, it is necessary to detect the welding quality. When it is found that there are poor welds such as false welding, it is necessary to re-clamp and position, and then weld again, which greatly affects the welding efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic welding device for the production of special vehicle tanks to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An automatic welding device for the production of special vehicle tanks, the automatic welding device includes a positioner, an auxiliary device, and a welding robot. A welding robot is provided on one side of the positioner, the output end of the welding robot is drivingly connected to the auxiliary device, a welding head is provided at the output end of the welding robot, and the positioner is used for clamping the tank.

[0008] The tank is clamped and fixed by the positioner. When performing longitudinal seam welding, the stability of the tank welding is ensured. When performing circumferential welding, the tank is driven to rotate, and the welding robot welds the tank through the welding head. Through multi-mode welding, the welding diversity of special vehicle tanks is improved. The quality of the welding is detected in real time by the auxiliary device to ensure the welding quality.

[0009] Further, the positioner includes a support table and a fixture. There are two groups of fixtures. The outer sides of the two groups of fixtures are rotatably connected to the support table, and the inner sides of the two groups of fixtures are respectively in contact with the tank;

[0010] The auxiliary device includes a detection component and a mounting seat. The mounting seat is tightly connected to the output end of the welding robot. A through hole is set on the mounting seat. The welding head passes through the through hole on the mounting seat. The detection component is tightly connected to the mounting seat. The detection component includes a pressure-sensitive sheet, a hammer motor, a hammer and a rotating shaft. The hammer motor is tightly connected to the mounting seat. The output end of the hammer motor is connected to the hammer through the rotating shaft. The hammering point of the hammer faces the tank body, the pressure-sensitive sheet abuts against the surface of the tank body, and the hammering points of the pressure-sensitive sheet and the hammer are respectively located on both sides of the tank body weld. The pressure-sensitive sheet is made of piezoelectric ceramic.

[0011] The support table is used as the main supporting foundation for installing the clamp. Two symmetrically arranged clamps are used to clamp the two sides of the tank body respectively. When performing circumferential welding, the tank body is driven to rotate by the clamp, so as to facilitate the welding of the circumferential seam of the tank body. The mounting base is fixed to the output end of the welding robot, and is used to fix the detection component. At the same time, it can move with the welding head. After the welding is completed, the hammer motor fixed on the mounting base outputs torque to drive the shaft to rotate. During the rotation of the shaft, the hammer is driven to hammer to a position close to the weld. The hammering points of the pressure-sensitive sheet and the hammer are located on both sides of the weld. The pressure-sensitive sheet is crimped to the surface of the tank body. When the hammer hits the tank body, vibration is generated. When the welding quality is good, that is, the overall rigidity of both sides of the weld is large, the vibration attenuation transmitted to the bottom of the pressure-sensitive sheet is small, and the pressure-sensitive sheet is pressed against the surface of the tank body by a certain pressure, vibrating. It will cause a micro-displacement on the surface of the tank, thereby changing the pressure of the tank on the pressure-sensitive plate. The smaller the vibration attenuation, the greater the pressure transmitted to the pressure-sensitive plate. Under the action of mechanical stress, the relative displacement of the internal positive and negative charge centers is polarized, resulting in a piezoelectric effect, which draws out the current on the pressure-sensitive plate and uses it as a detection current. The greater the pressure, the greater the current generated. When a cold weld occurs or the welding is incomplete, the vibration attenuation is severe due to the poor connection quality at this time, so that the amplitude transmitted to the tank under the pressure-sensitive plate is low, the pressure on the pressure-sensitive plate is reduced, and the detection current is reduced, thereby performing real-time detection of the welding quality.

[0012] Furthermore, the detection component also includes a slide plate, a transmission groove is provided on the hammer, and clamping grooves are respectively provided on both sides of the hammer. The two ends of the slide plate pass through the transmission groove and the clamping groove for sliding connection. A clamping spring is provided in the clamping groove. The clamping spring abuts against the slide plate on one side away from the clamping groove, and is firmly connected to the slide plate on one side of the rotating shaft.

[0013] By setting a slide plate, both ends of which are clamped in the slots, when the shaft rotates, the slide plate drives the hammer to rotate and hammer on the tank body. Under the elastic force of the compression spring, as the shaft rotates further, the hammer abuts against the surface of the tank body, pushing the hammer to move away from the surface of the tank body and overcomes the force of the compression spring, so that the compression spring is further compressed. After passing the hammering point, the compression spring releases the elastic force and pushes the hammer to reset, thereby facilitating continuous striking. The transmission groove on the hammer is eccentrically set, with the long end close to the hammering point and the other end as the short end. The length of the long end is the farthest point from the wall of the transmission groove to the hammering point, which is recorded as the hammering length. The hammering length is less than the straight-line distance from the axis of the shaft to the tank body to prevent motion interference.

[0014] Furthermore, the outer side of the hammer is arranged in an arc shape.

[0015] By setting the hammer in an arc shape, the local stress on the hammering point of the tank can be reduced to prevent damage.

[0016] Furthermore, the auxiliary device also includes an adjusting component, which includes a transmission plate, a pressure-regulating cylinder and an elastic metal sheet. The pressure-regulating cylinder is tightly connected to the mounting seat, the output end of the pressure-regulating cylinder is tightly connected to the pressure-sensitive sheet, a transmission plate is provided on one side of the pressure-regulating cylinder, the elastic metal sheet is arranged in an arc shape, one end of the elastic metal sheet is tightly connected to the transmission plate, and the other end abuts against the outer circle of the tank.

[0017] By setting an adjustment component to detect the curvature of the tank surface in real time, it is convenient to adjust the rotation speed of the tank and ensure the uniformity of welding. The elastic metal sheet is initially in an arc shape, with one end fixed on the transmission plate and the other end abutting against the tank surface. The abutment point is located on the side of the position to be welded. When the curvature of the tank remains unchanged, the elastic metal sheet always fits the tank surface, and the clamp drives the tank to rotate at a constant speed. When the curvature of the tank increases, the elastic metal sheet is driven to deform toward the transmission plate. The deformation amount of the elastic metal sheet is positively correlated with the curvature of the tank, that is, the greater the curvature of the tank, the greater the deformation amount of the elastic metal sheet.

[0018] Furthermore, the adjustment component also includes a push rod and an induction coil. An induction slot is provided on the transmission plate, and the induction coil is placed in the induction slot. One end of the push rod is transmission-connected to the elastic metal sheet, and the other end is inserted into the induction slot. The axis of the push rod and the axis of the induction coil are colinear. The push rod is made of a magnetic material. The push rod and the notch of the induction slot are slidingly connected. A slide slot is provided on the elastic metal sheet, and the slide slot has a stepped cross-section. One end of the push rod is inserted into the slide slot, and the push rod and the slide slot are slidingly connected.

[0019] When the elastic metal sheet is deformed, the push rod is driven through the slide groove and the push rod to move along the axis, and the induction coil cuts the magnetic flux lines and generates an induced current. That is, the greater the curvature of the tank body, the greater the induced current. During the deformation of the elastic metal sheet, the push rod slides in the slide groove to prevent movement interference. The push rod is limited by the stepped setting of the slide groove cross section. That is, when the elastic metal sheet is reset, the push rod is driven to move in the direction close to the elastic metal sheet, thereby automatically resetting, facilitating continuity detection and improving detection efficiency.

[0020] As an optimization, the induction coil and the push rod form an induction circuit, and the pressure regulating cylinder is electrically connected to the induction circuit. According to the magnitude of the current in the induction circuit, the magnitude of the current input to the pressure regulating cylinder is automatically adjusted, that is, when the curvature is greater, the current in the induction circuit is greater, and the output displacement of the pressure regulating cylinder is greater, thereby ensuring that the pressure of the pressure sensing piece on the surface of the tank body tends to be consistent, and improving the detection accuracy.

[0021] As an optimization, the displacement device also includes a driving motor, the driving motor is tightly connected to the support platform, the output end of the driving motor is connected to the clamp transmission, and the driving motor is electrically connected to the induction circuit. Two driving cavities are set on the support platform, and the driving motor is placed in the driving cavity. Through transmission, the two clamps are driven to rotate, thereby clamping the tank body and driving the tank body to rotate.

[0022] As an optimization, the automated welding equipment also includes a track, which is located on one side of the support platform. The track is used to move the welding robot, and the track output displacement direction is parallel to the axis direction of the tank body. By setting the track, the welding robot is driven to move linearly, so as to facilitate the longitudinal seam welding of the tank body.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: after welding is completed, the torque is output by the hammer motor fixed on the mounting base to drive the rotating shaft to rotate. During the rotation of the rotating shaft, the hammer is driven to hammer to a position close to the weld, and the hammering points of the pressure-sensitive sheet and the hammer are located on both sides of the weld. The pressure-sensitive sheet is crimped to the surface of the tank body. When the hammer hammers onto the tank body, vibration is generated. When the welding quality is good, that is, the overall rigidity of both sides of the weld is large, the vibration attenuation transmitted to the bottom of the pressure-sensitive sheet is small, and the pressure-sensitive sheet is pressed against the surface of the tank body by a certain pressure, and the vibration will drive the surface of the tank body to produce micro-displacement , so that the pressure of the tank body on the pressure-sensitive piece changes. The smaller the vibration attenuation, the greater the pressure transmitted to the pressure-sensitive piece. Under the action of mechanical stress, the relative displacement of the internal positive and negative charge centers is polarized, resulting in a piezoelectric effect, which draws out the current on the pressure-sensitive piece as the detection current. The greater the pressure, the greater the current generated. When a cold weld occurs or the welding is incomplete, the vibration attenuation is severe due to the poor connection quality at this time, so that the amplitude transmitted to the tank body under the pressure-sensitive piece is low, the pressure on the pressure-sensitive piece is reduced, and the detection current is reduced, thereby performing real-time detection of the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the present invention.

[0030] In the figure: 1. displacement device; 11. support table; 12. fixture; 13. driving motor; 2. auxiliary device; 21. detection component; 211. pressure-sensitive sheet; 212. hammer motor; 213. hammer; 2131. transmission slot; 2132. card slot; 214. rotating shaft; 215. slide plate; 216. clamping spring; 22. adjustment component; 221. transmission plate; 2211. induction slot; 222. pressure-regulating cylinder; 223. elastic metal sheet; 2231. slide slot; 224. ejector rod; 225. induction coil; 23. mounting seat; 3. welding robot; 4. track; 5. tank body; 6. welding head. DETAILED DESCRIPTION

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0032] Example: Figures 1 - 6 As shown, the present invention provides a technical solution for automated welding equipment for producing special vehicle tank bodies.

[0033] An automated welding device for producing special vehicle tank bodies, the automated welding device comprising a displacement device 1, an auxiliary device 2 and a welding robot 3. The welding robot 3 is provided on one side of the displacement device 1, the output end of the welding robot 3 is transmission-connected to the auxiliary device 2, the output end of the welding robot 3 is provided with a welding head 6, and the displacement device 1 is used for clamping the tank body 5.

[0034] The tank body 5 is clamped and fixed by the displacement device 1. When performing longitudinal seam welding, the tank body 5 is ensured to be welded stably. When performing circumferential welding, the tank body 5 is driven to rotate. The welding robot 3 welds the tank body 5 through the welding head 6. Through multi-mode welding, the welding diversity of the tank body 5 of the special vehicle is improved. The auxiliary device 2 detects the welding quality in real time to ensure the welding quality.

[0035] Furthermore, the displacement device 1 includes a support platform 11 and a clamp 12. The clamp 12 is provided with two groups. The outer sides of the two groups of clamps 12 are rotatably connected to the support platform 11, and the inner sides of the two groups of clamps 12 are respectively in contact with the tank body 5.

[0036] The auxiliary device 2 includes a detection component 21 and a mounting seat 23. The mounting seat 23 is tightly connected to the output end of the welding robot 3. A through hole is set on the mounting seat 23. The welding head 6 passes through the through hole on the mounting seat 23. The detection component 21 is tightly connected to the mounting seat 23. The detection component 21 includes a pressure-sensitive sheet 211, a hammer motor 212, a hammer 213 and a rotating shaft 214. The hammer motor 212 is tightly connected to the mounting seat 23. The output end of the hammer motor 212 is connected to the hammer 213 through the rotating shaft 214. The hammering point of the hammer 213 faces the tank body 5. The pressure-sensitive sheet 211 abuts against the surface of the tank body 5. The hammering points of the pressure-sensitive sheet 211 and the hammer 213 are respectively located on both sides of the weld of the tank body 5. The pressure-sensitive sheet 211 is made of piezoelectric ceramic.

[0037] The support platform 11 is used as the main support base for installing the clamp 12. The two symmetrically arranged clamps 12 are used to clamp the two sides of the tank body 5 respectively. When performing circumferential welding, the tank body 5 is driven to rotate by the clamp 12, so as to facilitate the welding of the circumferential seam of the tank body 5. The mounting seat 23 is fixed to the output end of the welding robot 3, and is used to fix the detection component 21. At the same time, it can move with the welding head 6. After the welding is completed, the hammer motor 212 fixed on the mounting seat 23 outputs torque to drive the rotating shaft 214 to rotate. During the rotation of the rotating shaft 214, the hammer 213 is driven to hammer to a position close to the weld. The hammering points of the pressure-sensitive sheet 211 and the hammer 213 are located on both sides of the weld. The pressure-sensitive sheet 211 is pressed against the surface of the tank body 5. When the hammer 213 hammers on the tank body 5, vibration is generated. When the welding quality is good, that is, the overall rigidity of the two sides of the weld is large, the vibration attenuation transmitted to the bottom of the pressure-sensitive sheet 211 is small, and the pressure-sensitive sheet 211 is certain The pressure is applied to the surface of the tank body, and the vibration will drive the surface of the tank body 5 to produce a micro-displacement, thereby causing the pressure of the tank body 5 on the pressure-sensitive plate 211 to change. The smaller the vibration attenuation, the greater the pressure transmitted to the pressure-sensitive plate 211. Under the action of mechanical stress, the relative displacement of the internal positive and negative charge centers is polarized, resulting in a piezoelectric effect, which draws out the current on the pressure-sensitive plate 211 as a detection current. The greater the pressure, the greater the current generated. When a cold weld occurs or the welding is incomplete, the vibration attenuation is severe due to the poor connection quality at this time, so that the amplitude transmitted to the tank body 5 under the pressure-sensitive plate 211 is low, the pressure on the pressure-sensitive plate 211 is reduced, and the detection current is reduced, thereby performing real-time detection of the welding quality.

[0038] Further, the detection component 21 further includes a slide plate 215. A transmission groove 2131 is provided on the hammer 213. Card slots 2132 are respectively provided on both sides of the hammer 213. Both ends of the slide plate 215 pass through the transmission groove 2131 and the card slots 2132 and are slidably connected. A compression spring 216 is provided in the card slot 2132. The side of the compression spring 216 away from the card slot 2132 abuts against the slide plate 215. One side of the rotating shaft 214 is fixedly connected to the slide plate 215.

[0039] By providing the slide plate 215, both ends are clamped in the card slots 2132. When the rotating shaft 214 rotates, the hammer 213 is driven to rotate through the slide plate 215 and strikes the tank body 5. Under the action of the elastic force of the compression spring 216, as the rotation of the rotating shaft 214 further proceeds, under the abutting action of the hammer 213 on the surface of the tank body 5, the hammer 213 is pushed to move away from the surface of the tank body 5 and overcomes the acting force of the compression spring 216, so that the compression spring 216 is further compressed. When passing over the hammering point, the compression spring 216 releases the elastic force and pushes the hammer 213 to reset, thus facilitating continuous knocking. The transmission groove 2131 on the hammer 213 is eccentrically arranged. The side close to the hammering point is the long end, and the other end is the short end. The length of the long end is the distance from the wall surface of the transmission groove 2131 to the farthest point close to the hammering point, denoted as the hammering length. The hammering length is less than the linear distance from the axis of the rotating shaft 214 to the tank body 5 to prevent movement interference.

[0040] Further, the outer side of the hammer 213 is arc-shaped.

[0041] By the arc-shaped setting of the hammer 213, the local stress received at the hammering point of the tank body 5 is reduced, preventing damage.

[0042] Further, the auxiliary device 2 further includes an adjustment component 22. The adjustment component 22 includes a transmission plate 221, a pressure regulating cylinder 222 and an elastic metal sheet 223. The pressure regulating cylinder 222 is fixedly connected to the mounting seat 23. The output end of the pressure regulating cylinder 222 is fixedly connected to the pressure sensing sheet 211. A transmission plate 221 is provided on one side of the pressure regulating cylinder 222. The elastic metal sheet 223 is arc-shaped. One end of the elastic metal sheet 223 is fixedly connected to the transmission plate 221, and the other end abuts against the outer circle of the tank body 5.

[0043] By providing the adjustment component 22, the surface curvature of the tank body 5 is detected in real time, so as to facilitate adjusting the rotation speed of the tank body 5 and ensure the uniformity of welding. The elastic metal sheet 223 is in an arc shape in the initial state. One end is fixed on the transmission plate 221, and the other end abuts against the surface of the tank body 5. The abutting point is on one side of the position to be welded. When the curvature of the tank body 5 remains unchanged, the elastic metal sheet 223 always fits on the surface of the tank body 5. The fixture 12 drives the tank body 5 to rotate at a constant speed. When the curvature of the tank body 5 becomes larger, it drives the elastic metal sheet 223 to deform towards the transmission plate 221. The deformation amount of the elastic metal sheet 223 is positively correlated with the curvature of the tank body 5, that is, the larger the curvature of the tank body 5, the larger the deformation amount of the elastic metal sheet 223.

[0044] Furthermore, the adjustment component 22 also includes a push rod 224 and an induction coil 225. The transmission plate 221 is provided with an induction groove 2211, and the induction coil 225 is placed in the induction groove 2211. One end of the push rod 224 is transmission-connected to the elastic metal sheet 223, and the other end is inserted into the induction groove 2211. The axis of the push rod 224 and the axis of the induction coil 225 are colinear. The push rod 224 is made of a magnetic material. The push rod 224 and the notch of the induction groove 2211 are slidably connected. A slide groove 2231 is provided on the elastic metal sheet 223. The cross-section of the slide groove 2231 is arranged in a stepped shape. One end of the push rod 224 is inserted into the slide groove 2231, and the push rod 224 and the slide groove 2231 are slidably connected.

[0045] When the elastic metal sheet 223 is deformed, the transmission is transmitted through the slide groove 2231 and the push rod 224, so that the push rod 224 moves along the axis, and the induction coil 225 moves to cut the magnetic flux lines and generate an induced current, that is, the greater the curvature of the tank body 5, the greater the induced current. During the deformation of the elastic metal sheet 223, the push rod 224 slides in the slide groove 2231 to prevent movement interference. The push rod 224 is limited by the stepped cross-section setting of the slide groove 2231, that is, when the elastic metal sheet 223 is reset, the push rod 224 is driven to move in the direction close to the elastic metal sheet 223, thereby automatically resetting, facilitating continuity detection and improving detection efficiency.

[0046] As an optimization, the induction coil 225 and the push rod 224 form an induction circuit, and the pressure regulating cylinder 222 is electrically connected to the induction circuit. According to the magnitude of the current in the induction circuit, the magnitude of the current input to the pressure regulating cylinder 222 is automatically adjusted, that is, when the curvature is greater, the greater the current in the induction circuit, the greater the output displacement of the pressure regulating cylinder 222, thereby ensuring that the pressure of the pressure sensing sheet 211 on the surface of the tank body 5 tends to be consistent, thereby improving the detection accuracy.

[0047] As an optimization, the displacement device 1 further includes a driving motor 13, the driving motor 13 is firmly connected to the support platform 11, the output end of the driving motor 13 is transmission-connected to the clamp 12, and the driving motor 13 is electrically connected to the induction circuit. Two driving cavities are provided on the support platform 11, and the driving motor 13 is placed in the driving cavity. Through transmission, the two clamps 12 are driven to rotate, thereby clamping the tank body 5 and driving the tank body 5 to rotate.

[0048] As an optimization, the automated welding equipment further includes a track 4, which is located on one side of the support platform 11. The track 4 is used to move the welding robot 3, and the output displacement direction of the track 4 is parallel to the axis direction of the tank body 5. By setting the track 4, the welding robot 3 is driven to move linearly, so as to facilitate the longitudinal seam welding of the tank body 5.

[0049] Working principle of the present invention: After welding is completed, the hammering motor 212 fixed on the mounting base 23 outputs torque to drive the rotation of the rotating shaft 214. During the rotation of the rotating shaft 214, the hammer 213 is driven to hammer at a position close to the weld. The pressure-sensitive sheet 211 and the hammering point of the hammer 213 are located on both sides of the weld. The pressure-sensitive sheet 211 is pressed against the surface of the tank body 5. When the hammer 213 hammers on the tank body 5, vibrations are generated. When the welding quality is good, that is, the overall rigidity on both sides of the weld is large, the vibration attenuation amount transmitted to the lower part of the pressure-sensitive sheet 211 is small. The pressure-sensitive sheet 211 is pressed against the tank body surface by a certain pressure. The vibration will drive a micro-displacement on the surface of the tank body 5, thereby causing a change in the pressure of the tank body 5 on the pressure-sensitive sheet 211. The smaller the vibration attenuation amount, the greater the pressure transmitted to the pressure-sensitive sheet 211. Under the action of mechanical stress, the relative displacement of the internal positive and negative charge centers occurs polarization, generating the piezoelectric effect. The current on the pressure-sensitive sheet 211 is led out as the detected current. The greater the pressure, the greater the generated current. When there is a virtual weld or incomplete welding, since the connection quality is not high at this time, the vibration attenuation is severe, so the amplitude of the tank body 5 transmitted to the lower part of the pressure-sensitive sheet 211 is low, the pressure on the pressure-sensitive sheet 211 is reduced, and the detected current is reduced, thereby realizing real-time detection of the welding quality.

[0050] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic welding device for the production of a special vehicle tank body, characterized in that: The automated welding equipment includes a position-changing device (1), an auxiliary device (2) and a welding robot (3). The welding robot (3) is arranged on one side of the position-changing device (1). The output end of the welding robot (3) is in transmission connection with the auxiliary device (2). A welding head (6) is provided at the output end of the welding robot (3). The position-changing device (1) is used for clamping the tank body (5). The position-changing device (1) includes a support table (11) and a fixture (12). There are two groups of the fixtures (12). The outer sides of the two groups of fixtures (12) are rotatably connected to the support table (11), and the inner sides of the two groups of fixtures (12) are respectively abutted against the tank body (5). The auxiliary device (2) includes a detection component (21) and a mounting seat (23). The mounting seat (23) is fixedly connected to the output end of the welding robot (3). A through hole is provided on the mounting seat (23). The welding head (6) passes through the through hole on the mounting seat (23). The detection component (21) is fixedly connected to the mounting seat (23). The detection component (21) includes a pressure-sensitive sheet (211), a hammering motor (212), a hammer (213) and a rotating shaft (214). The hammering motor (212) is fixedly connected to the mounting seat (23). The output end of the hammering motor (212) is in transmission connection with the hammer (213) through the rotating shaft (214). The hammering point of the hammer (213) faces the tank body (5). The pressure-sensitive sheet (211) is abutted against the surface of the tank body (5). The hammering point of the pressure-sensitive sheet (211) and the hammer (213) are respectively located on both sides of the weld of the tank body (5). The pressure-sensitive sheet (211) is made of piezoelectric ceramic material. The auxiliary device (2) further includes an adjusting component (22). The adjusting component (22) includes a transmission plate (221), a pressure-regulating cylinder (222) and an elastic metal sheet (223). The pressure-regulating cylinder (222) is fixedly connected to the mounting seat (23). The output end of the pressure-regulating cylinder (222) is fixedly connected to the pressure-sensitive sheet (211). A transmission plate (221) is arranged on one side of the pressure-regulating cylinder (222). The elastic metal sheet (223) is arc-shaped. One end of the elastic metal sheet (223) is fixedly connected to the transmission plate (221), and the other end is abutted against the outer circle of the tank body (5). The adjusting component (22) further includes a push rod (224) and an induction coil (225). An induction groove (2211) is provided on the transmission plate (221). The induction coil (225) is placed in the induction groove (2211). One end of the push rod (224) is in transmission connection with the elastic metal sheet (223), and the other end is inserted into the induction groove (2211). The axis of the push rod (224) is collinear with the axis of the induction coil (225). The push rod (224) is made of magnet material. The push rod (224) is slidably connected to the notch of the induction groove (2211). A sliding groove (2231) is provided on the elastic metal sheet (223). The cross section of the sliding groove (2231) is stepped. One end of the push rod (224) is inserted into the sliding groove (2231), and the push rod (224) is slidably connected to the sliding groove (2231).

2. The automatic welding equipment for the production of special vehicle tanks according to claim 1, characterized in that: The detection component (21) further includes a sliding plate (215). A transmission groove (2131) is provided on the striker (213). Clamping grooves (2132) are respectively provided on both sides of the striker (213). Both ends of the sliding plate (215) pass through the transmission groove (2131) and the clamping grooves (2132) and are slidably connected. A compression spring (216) is provided in the clamping groove (2132). One side of the compression spring (216) away from the clamping groove (2132) abuts against the sliding plate (215). One side of the rotating shaft (214) is fixedly connected to the sliding plate (215).

3. The automated welding equipment for the production of a special vehicle tank body according to claim 2, characterized in that: The outer side of the striker (213) is arc-shaped.

4. The automatic welding equipment for the production of a special vehicle tank body according to claim 3, characterized in that: The induction coil (225) and the ejector rod (224) form an induction circuit, and the pressure regulating cylinder (222) is electrically connected to the induction circuit.

5. An automated welding device for the production of a special vehicle tank body according to claim 4, characterized in that: The displacement device (1) further includes a driving motor (13). The driving motor (13) is fixedly connected to the support platform (11). The output end of the driving motor (13) is in transmission connection with the fixture (12). The driving motor (13) is electrically connected to the induction circuit.

6. The automated welding equipment for the production of special vehicle tanks according to claim 5, characterized in that: The automatic welding equipment further includes a track (4). The track (4) is located on one side of the support platform (11). The track (4) is used to move the welding robot (3). The output displacement direction of the track (4) is parallel to the axis direction of the tank body (5).

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