Automatic welding device for trolley chassis

Abstract

The present application relates to an automatic welding device for a trolley chassis, and relates to the technical field of trolleys, including a positioning platform, a positioning component for positioning components of the trolley chassis, and a welding robot, wherein the positioning component is arranged on the positioning platform; the welding robot is used to weld the components of the trolley chassis after positioning into the trolley chassis; a transfer device and a grabbing device are arranged on one side of the positioning platform, and the transfer device includes a storage box, a placement table, and a feeding cylinder, and the feeding cylinder is arranged at the bottom of the storage box; a plurality of placement slots are provided on the placement table, and the components of the trolley chassis are classified and placed in different placement slots, and the placement table is connected to the piston rod of the feeding cylinder, and the placement table can move up and down along the height direction of the storage box; the grabbing device is used to grab the components of the trolley chassis on the placement table onto the positioning platform in sequence. The present application has the effect of improving the welding efficiency of the trolley chassis.

Description

Technical Field

[0001] The present application relates to the technical field of trolleys, and in particular to an automatic welding device for a trolley chassis. Background Art

[0002] At present, supermarket shopping has become a part of people's daily life. In order to improve the convenience of people's shopping, trolleys have become an indispensable means of carrying goods in supermarket shopping. Among them, the components of the trolley chassis are generally welded by chassis tubes, front connecting tubes, front connecting rods, rear connecting tubes and connecting plates.

[0003] A Chinese patent with announcement number CN210848864U discloses a trolley underframe welding device, including a welding robot, an underframe tube positioning mechanism, a front connecting tube positioning mechanism, a front connecting rod positioning mechanism and a rear connecting tube positioning mechanism, wherein the underframe tube positioning mechanism is used to position the underframe tube and the connecting plate; the front connecting tube positioning mechanism is used to position the front connecting tube, the front connecting rod positioning mechanism is used to position the front connecting rod, and the rear connecting tube positioning mechanism is used to position the rear connecting tube; after the staff places the components of the trolley underframe, such as the underframe tube, the front connecting tube, the front connecting rod, the rear connecting tube and the connecting plate, in the corresponding positioning mechanisms in sequence for positioning, the welding robot is started to weld the connection parts of the components of the trolley underframe to form the trolley underframe.

[0004] With respect to the above-mentioned related technologies, the inventors found that before the welding robot performs welding, the staff must first take the components of the trolley chassis and place them in the corresponding positioning mechanisms in sequence before entering the welding process. However, the number of components on the trolley chassis is large, and often due to excessive stacking of components, a large number of components slip when being extracted, and the staff need to sort them out again. Or because the components are placed scattered, it takes too much time to find the components, which reduces work efficiency and slows down the overall welding process. Therefore, there is room for improvement. Summary of the invention

[0005] In order to improve the welding efficiency of a trolley chassis, the present application provides an automatic welding device for a trolley chassis.

[0006] The automatic welding device for a trolley chassis provided in the present application adopts the following technical solution:

[0007] An automatic welding device for a trolley chassis, comprising a positioning platform, a positioning component and a welding robot, wherein the positioning component is fixedly arranged on the positioning platform, and the positioning component is used to position the components of the trolley chassis; the welding robot is used to weld the components of the positioned trolley chassis into the trolley chassis; a transfer device and a gripping device are arranged on one side of the positioning platform, and the transfer device comprises a storage box, a placement table and a loading cylinder, the storage box is arranged on one side of the positioning platform, and the loading cylinder is fixedly arranged on the bottom of the storage box; a plurality of placement slots are opened on the placement table, and the components of the trolley chassis are classified and placed in different placement slots, the placement table is fixedly connected to the piston rod of the loading cylinder, and the placement table can move up and down along the height direction of the storage box; the gripping device is used to grab the components of the trolley chassis on the placement table onto the positioning platform in sequence.

[0008] By adopting the above technical solution, the components of the trolley chassis are classified and placed in each placement slot. In the initial state, the loading cylinder is retracted and the placement table is located in the storage box; when starting to work, the loading cylinder is extended, so that the placement table moves upward, so that the components of the uppermost trolley chassis in the placement slot are exposed to the placement table, the loading cylinder stops operating, and the grabbing device is started. The grabbing device grabs the components of the trolley chassis on the placement table to the positioning platform in turn, so that the positioning component positions them; when a group of trolley chassis components are positioned, the welding robot operates, and the welding robot welds the positioned trolley chassis components into a trolley chassis; repeat the above steps until there is no remaining trolley chassis in the placement slot. When welding the trolley base components, the piston rod of the loading cylinder is in an extended state, and the staff promptly classifies and places the components of several trolley bases in different placement slots, and controls the descent of the placement table through the loading cylinder to facilitate the staff to place a large number of trolley base components, until the piston rod of the loading cylinder is fully retracted, the components of the trolley chassis are replenished, and subsequent welding processes can be carried out; a large number of trolley chassis components are neatly classified and placed in the storage box, and are automatically grabbed by the grabbing device, which reduces the possibility of staff spending a lot of time looking for components of each trolley chassis in a messy environment and reducing work efficiency, thereby helping to improve the efficiency of welding the trolley chassis.

[0009] Preferably, a partition frame is fixedly provided at the opening of the storage box, and a plurality of partition bars are spaced apart on the partition frame along the length direction of the storage box, the positions of the partition bars correspond one to one with the positions of the placement slots at intervals on the placement table, and a telescopic isolation plate is fixedly provided on the lower surfaces of the plurality of partition bars, and one end of the telescopic isolation plate away from the partition bar is fixedly connected to the upper surface of the corresponding placement slots at intervals on the placement table.

[0010] By adopting the above technical scheme, when the piston rod of the loading cylinder is in a fully extended state, the telescopic isolation plate abuts against the upper surface of the placement table and the lower surface of the dividing fence, and the telescopic isolation plate is in a compressed state; when the piston rod of the loading cylinder is in a fully retracted state, the telescopic isolation plate opens, so that each placement slot forms a separate compartment in the storage box, reducing the possibility that the components of the trolley chassis in the placement slot will slip due to vibration when the loading cylinder is started, and fall into the surrounding placement slots, affecting the possibility of the grasping device correctly grasping, and improving the stability of the components of the trolley chassis in the placement slot.

[0011] Preferably, a first installation groove is provided on the lower surface of the storage box, a propulsion cylinder is fixedly installed in the first installation groove, a roller is provided at the piston rod of the propulsion cylinder, and the roller can abut against the ground.

[0012] By adopting the above technical solution, when the storage box is in a fixed state, the piston rod of the propulsion cylinder is retracted, the roller is located in the first mounting groove, and the lower surface of the storage box is in contact with the ground; when the storage box needs to be adjusted to facilitate the replenishment of the components of the cart chassis, the propulsion cylinder is started, so that the piston rod of the propulsion cylinder drives the roller to move in a direction close to the ground until the roller is in contact with the ground. The staff applies thrust to the storage box, the roller slides, and the staff can move the storage box more easily, thereby improving the convenience of adjusting the position of the storage box.

[0013] Preferably, a mounting rod is fixedly provided on the piston rod of the propulsion cylinder, and a cleaning brush is fixedly provided on one end of the mounting rod away from the piston rod, and the bristles of the cleaning brush can abut against the peripheral wall of the roller.

[0014] By adopting the above technical solution, the floor of the welding factory of the trolley base often has a large amount of debris or fine impurities. When the roller rotates, the bristles of the cleaning brush abut against the peripheral wall of the roller, thereby cleaning the peripheral wall of the roller, reducing the debris or impurities stuck in the peripheral wall of the roller, affecting the normal rotation of the roller, and increasing the service life of the roller.

[0015] Preferably, the positioning assembly includes a positioning bracket and an elbow clamp, wherein a plurality of the elbow clamps are provided and fixedly mounted on the positioning bracket, and a pushing cylinder is provided below each of the elbow clamps and fixedly mounted on the upper surface of the positioning platform, and a piston rod of the pushing cylinder is fixedly connected to a handle of the elbow clamp; the positioning bracket is fixedly mounted on the positioning platform, and a plurality of trolley chassis components can be placed in specified positions of the positioning bracket.

[0016] By adopting the above technical solution, when a group of trolley chassis components are placed on the positioning platform, the push cylinder is started, pushing the piston rod of the cylinder to extend, so that the abutting end of the elbow clamp abuts against the components of the trolley chassis, so that the components of the trolley chassis are positioned on the positioning platform, which reflects the automation of the trolley chassis welding device, thereby facilitating improving the efficiency of welding the trolley chassis.

[0017] Preferably, a plastic buckle is fixedly provided at one end of the piston rod of the pushing cylinder away from the main body thereof, and the inner peripheral wall of the plastic buckle can abut against the peripheral wall of the handle of the elbow clamp.

[0018] By adopting the above technical solution, an outer peripheral wall opposite to the opening of the plastic ring buckle is fixedly connected to the end of the piston rod of the pushing cylinder away from its own main body. Under normal conditions, the peripheral wall of the handle of the elbow clamp abuts against the inner peripheral wall of the plastic ring buckle, and the opening of the plastic ring buckle is closed. When the elbow clamp needs to be disassembled and repaired, the opening of the plastic ring buckle can be opened to separate the elbow clamp from the pushing cylinder, thereby making the maintenance and replacement of the elbow clamp more convenient and improving the practicality of the device.

[0019] Preferably, the gripping device includes a receiving platform, a first support tube, a second support tube, an automatic slide rail, a telescopic cylinder, an automatic gripper and a rotating assembly. The receiving platform is located on a side of the storage box away from the positioning platform, one end of the first support tube is fixedly arranged on the upper surface of the receiving platform, the first support tube extends upward along the height direction of the receiving platform, and one end of the second support tube is connected to an end of the first support tube away from the receiving platform; the automatic slide rail is fixedly arranged on the second support tube, and one end of the feeding cylinder away from its own piston rod is slidably connected to the automatic slide rail, the induction gripper is fixedly arranged on the piston rod of the feeding cylinder, and the induction gripper is located below the second support tube; the rotating assembly can drive the first support rod to rotate along its own axis.

[0020] By adopting the above technical solution, one end of the first support tube away from the receiving platform is connected to one end of the second support tube, and the second support tube extends horizontally in a direction away from the first support tube, so that the second support tube is erected above the storage box and the positioning platform; the automatic slide rail drives the telescopic cylinder to slide back and forth along the length direction of the second support tube, and the rotating assembly drives the first support rod to rotate along its own axis, so that the grasping position of the automatic gripper can be adjusted in coordination with the automatic slide rail, so that the automatic gripper can grasp the components of the trolley frame and accurately put them into the corresponding positions, thereby improving the practicality of the device.

[0021] Preferably, the automatic gripping clamp is provided with an anti-slip rubber pad.

[0022] By adopting the above technical solution, the surface of the components of the trolley chassis is relatively smooth, and the anti-slip rubber pad improves the friction force when the automatic gripper grasps the components of the trolley chassis, reducing the probability of the components of the trolley chassis slipping during the process of being grasped by the automatic gripper, which is beneficial to improving the stability of the automatic gripper grasping the components of the trolley chassis.

[0023] Preferably, the rotating assembly includes a rotating motor and a connecting ring plate, a first mounting groove is opened in the receiving platform, the first support tube is hollow inside, and the first support tube is inserted into the first mounting groove; the outer wall of the connecting ring plate is fixedly connected to the inner wall of the first support tube, the inner wall of the connecting ring plate is fixedly connected to the peripheral wall of the driving shaft of the rotating motor, and the first support tube is rotatably connected to the receiving platform.

[0024] By adopting the above technical solution, the first support tube is fixedly connected to the driving shaft of the rotating motor through the connecting ring plate. When the rotating motor rotates, the first support tube rotates together with the rotating motor, thereby making it more convenient to adjust the grabbing direction of the automatic clamp.

[0025] Preferably, a rotating gear is provided in the first support tube, the rotating gear is fixedly connected to the driving shaft of the rotating motor, and the rotating gear is coaxial with the driving shaft of the rotating motor; a rotating roller and a transmission bar are provided in the first support tube, the rotating roller is rotatably connected to the inner side wall of the first support tube, the transmission bar is tensionedly connected to the rotating roller, a section of gear pattern is provided on the transmission bar, and a double-sided rack is slidably provided in the first support tube, one side tooth pattern surface of the double-sided rack is meshed with the rotating gear, and the other side tooth pattern surface of the double-sided rack is meshed with the gear pattern; a through hole is opened through the first support tube along its own height direction, a connecting rod is rotatably connected to the transmission bar, the connecting rod is arranged through the through hole, the end of the connecting rod away from the transmission bar is rotatably connected to the second support tube, and the first support tube is rotatably connected to the second support tube.

[0026] By adopting the above technical solution, in the initial state, the angle between the first support rod and the second support tube is less than 90 degrees. When the rotating motor reverses, the driving shaft of the rotating motor drives the rotating gear to reverse, and the rotating gear drives the double-sided rack to move in the direction close to the storage box, so that the upward tooth pattern surface of the double-sided rack meshes with the gear pattern on the transmission bar, thereby causing the transmission bar to rotate forward; the connecting rod moves upward along the height direction of the first support tube, thereby exerting an upward thrust on the second support tube, causing the second support tube to rotate upward with the height direction of the first support tube as the axis, until the angle between the first support tube and the second support tube is 90 degrees, the transmission bar and the double support tube are in contact. The face gears are not engaged, and the transmission bar remains fixed, thereby keeping the connecting rod fixed; at the same time, the first support tube reverses to drive the second support tube to move above the storage box and the positioning platform, so as to carry out the subsequent grabbing process; when the device is not in working condition, the angle between the first support rod and the second support rod is less than 90 degrees, thereby reducing the space occupied by the entire grabbing device, and the height of the automatic gripper and the automatic slide rail is reduced, reducing the possibility of staff being in a high working state when repairing the automatic gripper or the automatic slide rail, and improving the safety of staff during maintenance, thereby helping to improve the overall practicality of the device.

[0027] In summary, the automatic welding device for a trolley chassis of the present application includes at least one of the following beneficial technical effects:

[0028] 1. Through the positioning platform, positioning components, welding robot, grabbing device, storage box, placement table, loading cylinder, placement slot, and by controlling the extension of the loading cylinder, it is convenient for the staff to classify and place the components of several trolley bases in different placement slots, and control the contraction of the telescopic cylinder to make the placement table descend, so as to facilitate the staff to place a large number of trolley base components, until the piston rod of the loading cylinder is fully contracted, the components of the trolley chassis are completed, and the grabbing device can be started to automatically grab and place the components of the trolley base in the placement slot on the specified position of the positioning platform, and then the positioning component is used to position the components of the placed trolley base, and finally the welding robot is started to weld to form the trolley base, which reduces the possibility that the staff spends a lot of time looking for the components of each trolley chassis in a messy environment and reduces the work efficiency, thereby helping to improve the efficiency of welding the trolley chassis.

[0029] 2. Through the partition frame, partition fence and telescopic isolation plate, the partition frame is fixed at the opening of the storage box, and the telescopic isolation plate is fixedly connected to the upper surface of the placement table and the lower surface of the partition fence. When the piston rod of the loading cylinder is in a fully retracted state, the telescopic isolation plate opens, so that each placement slot forms a separate compartment in the storage box, reducing the possibility that the components of the trolley chassis in the placement slot will slip due to vibration when the loading cylinder is started, and fall into the surrounding placement slots, affecting the possibility of the grasping device correctly grasping, and improving the stability of the components of the trolley chassis in the placement slot.

[0030] 3. Through the receiving platform, the first support tube, the second support tube, the automatic slide rail, the telescopic cylinder, the automatic gripper and the rotating assembly, the automatic slide rail can drive the telescopic cylinder to slide back and forth along the length direction of the second support tube, and the rotating assembly drives the first support rod to rotate along its own axis, so that the grasping position of the automatic gripper can be adjusted in coordination with the automatic slide rail, so that the automatic gripper can grasp the components of the trolley frame and accurately put them into the corresponding positions, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an automatic welding device for a trolley chassis according to an embodiment of the present application.

[0032] Figure 2 yes Figure 1 Sectional view along line AA.

[0033] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part B.

[0034] Figure 4 It is a schematic diagram showing the structure of the grasping device.

[0035] Figure 5 yes Figure 4 Cross-sectional view along line CC.

[0036] Figure 6 It is a schematic diagram showing the structure of the positioning component.

[0037] Figure 7 yes Figure 6 A partial enlarged schematic diagram of part D in the middle.

[0038] Description of reference numerals:

[0039] 1. Positioning platform; 2. Positioning assembly; 21. Positioning bracket; 22. Toggle clamp; 221. Push cylinder; 222. Plastic buckle; 3. Welding robot; 4. Transfer device; 41. Storage box; 411. Partition frame; 412. Partition fence; 413. First installation slot; 42. Placement table; 421. Placement slot; 43. Loading cylinder; 5. Telescopic isolation plate; 6. Push cylinder; 61. Roller; 62. Mounting rod; 63. Cleaning brush; 7. Grabbing device; 71. receiving platform; 711. second mounting groove; 72. first supporting tube; 721. rotating roller; 722. transmission strip; 723. through hole; 724. connecting rod; 73. second supporting tube; 74. automatic slide rail; 75. telescopic cylinder; 76. automatic gripping clamp; 761. anti-slip rubber pad; 77. rotating assembly; 771. rotating motor; 772. connecting ring plate; 7221. gear pattern; 8. double-sided rack; 9. rotating gear. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-7 This application is described in further detail.

[0041] The embodiment of the present application discloses an automatic welding device for a trolley chassis.

[0042] Reference Figure 1 and Figure 2 An automatic welding device for a trolley chassis includes a positioning platform 1, a positioning assembly 2 and a welding robot 3, the welding robot 3 is fixedly installed on one side of the positioning platform 1, and a transfer device 4 is provided on the side of the positioning platform 1 away from the welding robot 3, the transfer device 4 includes a storage box 41, a placement table 42 and a loading cylinder 43; the storage box 41 is located on the side of the positioning platform 1 away from the welding robot 3, and the opening of the storage box 41 faces upward, one end of the loading cylinder 43 is welded and fixed to the bottom wall in the storage box 41, and the lower surface of the placement table 42 is welded and fixed to the end of the piston rod of the loading cylinder 43 away from its own body, the side wall of the placement table 42 is in contact with the inner wall of the storage box 41, and the placement table 42 can be moved up and down along the height direction of the storage box 41 through the extension and retraction of the piston rod of the loading cylinder 43.

[0043] Reference Figure 2The placement table 42 is provided with a plurality of placement grooves 421 downwardly along the thickness direction thereof, a partition frame 411 is welded and fixed at the opening of the storage box 41, the outer wall of the partition frame 411 is in contact with the inner wall of the storage box 41, and a plurality of partition bars 412 are welded and fixed on the partition frame 411 at intervals along the length direction of the storage box 41, and the positions of the partition bars 412 and the placement grooves 421 at the intervals on the placement table 42 correspond one to one; and a telescopic isolation plate 5 is welded and fixed to the lower surface of the partition bars 412, the telescopic isolation plate 5 is arranged along the height direction of the storage box 41, and the side of the telescopic isolation plate 5 away from the partition bar 412 is welded and fixed to the upper surface of the corresponding placement grooves 421 at the intervals on the placement table 42.

[0044] Reference Figure 2 In this embodiment, five placement slots 421 are provided and four partition bars 412 are provided. The staff can control the extension and retraction of the feeding cylinder 43, so that the components of several trolley bases can be classified and placed in different placement slots 421 more conveniently; and the telescopic isolation plate 5 makes each placement slot 421 form a separate interval in the storage box 41, so that a large number of trolley base components can be placed in each placement slot 421, which not only improves the stability of the trolley chassis components in the placement slots 421, but also helps to reduce the possibility that the staff spends a lot of time looking for the components of each trolley chassis in a messy environment, thereby reducing the possibility of reducing work efficiency, thereby helping to improve the efficiency of welding the trolley chassis.

[0045] Reference Figure 2 and Figure 3 A first mounting groove 413 is provided on the lower surface of the storage box 41, and a propulsion cylinder 6 is welded and fixed in the first mounting groove 413. One end of the propulsion cylinder 6 is fixedly welded to the bottom wall of the first mounting groove 413, and one end of the piston rod of the propulsion cylinder 6 is rotatably connected to a roller 61 away from the storage box 41; when the piston rod of the propulsion cylinder 6 is in a retracted state, the bottom wall of the storage box 41 abuts against the ground.

[0046] Reference Figure 3 The piston rod of the propulsion cylinder 6 is provided with a mounting rod 62, one end of which is welded and fixed to the peripheral wall of the piston rod of the propulsion cylinder 6, and the other end of the mounting rod 62 extends along the length direction of the storage box 41, and a cleaning brush 63 is welded and fixed to the end of the mounting rod 62 away from the propulsion cylinder 6, and the bristles of the cleaning brush 63 abut against the peripheral wall of the roller 61. When the piston rod of the propulsion cylinder 6 is extended, the roller 61 moves away from the propulsion cylinder 6 until the roller 61 abuts against the ground, which makes it convenient for the staff to push the storage box 41; at the same time, the bristles of the cleaning brush 63 rub against the peripheral wall of the roller 61, which can reduce the probability of a lot of dust or fines adhering to the peripheral wall of the roller 61, thereby increasing the service life of the roller 61.

[0047] Reference Figure 1 and Figure 4 A grabbing device 7 is provided on the side of the storage box 41 away from the positioning platform 1. The grabbing device 7 includes a receiving platform 71, a first support tube 72, a second support tube 73, an automatic slide rail 74, a telescopic cylinder 75, and an automatic gripper 76. The receiving platform 71 is fixedly installed on the side of the storage box 41 away from the positioning platform 1. One end of the first support tube 72 away from the receiving platform 71 extends upward along the height direction of the receiving platform 71, and one end of the second support tube 73 is rotatably connected to one end of the first support tube 72 away from the receiving platform 71, and the second support tube 73 extends horizontally in a direction away from the first support tube 72. The automatic slide rail 74 is fixedly welded to the lower surface of the second support tube 73, and the automatic slide rail 74 extends along the length direction of the second support tube 73. The end of the telescopic cylinder 75 away from its own piston rod is slidably connected to the automatic slide rail 74, and the automatic grabbing clamp 76 is welded and fixed to the end of the piston rod of the telescopic cylinder 75 away from the automatic slide rail 74, and the grabbing hook of the automatic grabbing clamp 76 is bonded and fixed with an anti-slip rubber pad 761 to improve the stability of the automatic grabbing clamp 76 in grabbing the components of the trolley frame on the placement table 42.

[0048] Reference Figure 4 and Figure 5 The gripping device 7 further includes a rotating assembly 77, which includes a rotating motor 771 and a connecting ring plate 772. A second mounting groove 711 is provided in the receiving platform 71, and one end of the rotating motor 771 away from its own driving shaft is welded and fixed to the bottom wall of the second mounting groove 711. The interior of the first support tube 72 is hollow, one end of the first support tube 72 is inserted into the second mounting groove 711, and the outer peripheral wall of the connecting ring plate 772 is welded and fixed to the inner side wall of the end of the first support close to the rotating motor 771, and the inner peripheral wall of the connecting ring plate 772 is welded and fixed to the peripheral wall of the driving shaft of the rotating motor 771, and the driving shaft of the rotating motor 771 is partially located in the first support tube 72; the outer peripheral wall of the first support tube 72 abuts against the inner side of the mounting groove, and the driving shaft of the rotating motor 771 can drive the first support tube 72 to rotate, thereby making it more convenient to adjust the gripping direction of the automatic gripper 76.

[0049] Reference Figure 5 , referring to the figure, a group of rotating rollers 721 are rotatably connected in the first support tube 72, and a transmission bar 722 is tensionedly connected to the rotating rollers 721, and a through hole 723 is penetrated through the side wall of the first support tube 72, and the through hole 723 extends along the height direction of the first support tube 72. A connecting rod 724 is rotatably connected in the transmission bar 722, and one end of the connecting rod 724 away from the transmission bar 722 penetrates the through hole 723 and is rotatably connected to the lower surface of the second support tube 73.

[0050] Reference Figure 5The transmission bar 722 is provided with a gear pattern 7221, and the upper surface of the connecting ring plate 772 is slidably connected with a double-sided rack 8, and the upper surface of the double-sided rack 8 can mesh with the gear pattern 7221. A rotating gear 9 is welded and fixed to the end of the driving shaft of the rotating motor 771 away from the receiving platform 71, and the rotating gear 9 is coaxial with the driving shaft of the rotating motor 771, and the rotating gear 9 meshes with the side wall of the double-sided rack 8.

[0051] Reference Figure 1 and Figure 5 When the rotating motor 771 is not started, the angle between the first support tube 72 and the second support tube 73 is less than 90 degrees. When the rotating motor 771 reverses, the driving shaft of the rotating motor 771 drives the first support tube 72 to rotate. At the same time, the driving shaft of the rotating motor 771 also drives the rotating gear 9 to reverse. The rotating gear 9 drives the double-sided rack 8 to move toward the direction close to the storage box 41, so that the double-sided rack 8 drives the transmission bar 722 to rotate forward; at this time, the connecting rod 724 moves upward along the height direction of the first support tube 72, so that the second support tube 73 rotates upward, until the angle between the first support tube 72 and the second support tube 73 is 90 degrees, the transmission bar 722 is not engaged with the double-sided gear, the transmission bar 722 stops rotating, the connecting rod 724 remains fixed, and the second support tube 73 is located above the receiving platform 71 and the positioning platform 1, and the first support tube 72 can still be rotated by the rotating motor 771.

[0052] Reference Figure 1 and Figure 6 The positioning assembly 2 includes a positioning bracket 21 and a plurality of toggle clamps 22. The positioning bracket 21 is welded and fixed to the upper surface of the positioning platform 1, and the toggle clamps 22 are fixedly mounted on the positioning bracket 21. A group of components of the trolley chassis can be placed in a specified position of the positioning bracket 21 through a grabbing device 7.

[0053] Reference Figure 7 , a plurality of pushing cylinders 221 are welded and fixed on the positioning platform 1, and the number of the pushing cylinders 221 is consistent with the number of the elbow clamps 22. In this embodiment, the number of the pushing cylinders 221 and the elbow clamps 22 are both eight, and the pushing cylinders 221 are evenly distributed below the elbow clamps 22; a plastic ring buckle 222 is fixedly welded on the piston rod of the pushing cylinder 221, and the inner peripheral wall of the plastic ring buckle 222 can abut against the handle of the elbow clamp 22, so that the pushing cylinder 221 can drive the elbow clamp 22 to abut, thereby improving the degree of automation of the device, and when the elbow clamp 22 needs to be repaired, the opening of the plastic ring buckle 22 is opened, and the plastic ring buckle 222 can be separated from the elbow clamp 22, making the repair of the elbow clamp 22 more convenient.

[0054] The implementation principle of an automatic welding device for a trolley chassis in the embodiment of the present application is as follows:

[0055] When the staff places the components of the trolley chassis into the storage box 41, they operate the loading cylinder 43 so that the piston rod of the loading cylinder 43 drives the placement table 42 to move upward until the telescopic isolation plate 5 is in contact with the partition frame 411 and the placement table 42. The staff can more conveniently classify and place several components of the trolley chassis in each placement slot 421, and control the contraction of the loading cylinder 43 so that the placement table 42 is appropriately lowered, increasing the height of the separate space of each placement slot 421 to place more components of the trolley chassis, until the piston rod of the loading cylinder 43 is fully contracted, thus completing the replenishment of the components of the trolley base in the storage box 41.

[0056] A large number of trolley chassis components are neatly classified and placed in the storage box 41, and are automatically grabbed by the grabbing device 7, which reduces the possibility of workers spending a lot of time searching for components of each trolley chassis in a messy environment and reducing work efficiency, thereby helping to improve the efficiency of trolley chassis welding.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic welding device for a trolley chassis, characterized in that: The invention comprises a positioning platform (1), a positioning component (2) and a welding robot (3), wherein the positioning component (2) is fixedly arranged on the positioning platform (1), and the positioning component (2) is used to position the components of the trolley chassis; the welding robot (3) is used to weld the components of the trolley chassis that have been positioned into the trolley chassis; a transfer device (4) and a gripping device (7) are arranged on one side of the positioning platform (1), and the transfer device (4) comprises a storage box (41), a placement table (42) and a loading cylinder (43); the storage box (41) is arranged on one side of the positioning platform (1), and the loading cylinder (43) is fixedly arranged at the bottom of the storage box (41); a plurality of placement slots (421) are opened on the placement table (42), and the components of the trolley chassis are placed in different placement slots (421) according to categories, and the placement table (42 ) is fixedly connected to the piston rod of the loading cylinder (43), and the placement table (42) can move up and down along the height direction of the storage box (41); the grabbing device (7) is used to grab the components of the trolley chassis on the placement table (42) onto the positioning platform (1) in sequence; a partition frame (411) is fixedly arranged at the opening of the storage box (41), and a plurality of partition bars (412) are arranged on the partition frame (411) at intervals along the length direction of the storage box (41), and the positions of the partition bars (412) and the placement grooves (421) at the intervals on the placement table (42) correspond one to one, and the lower surfaces of the plurality of the partition bars (412) are fixedly arranged with telescopic isolation plates (5), and the ends of the telescopic isolation plates (5) away from the partition bars (412) are fixedly connected to the upper surfaces of the corresponding placement grooves (421) at the intervals on the placement table (42).

2. The automatic welding device for a trolley chassis according to claim 1, characterized in that: A first installation groove (413) is provided on the lower surface of the storage box (41), a propulsion cylinder (6) is fixedly arranged in the first installation groove (413), a roller (61) is arranged at the piston rod of the propulsion cylinder (6), and the roller (61) can abut against the ground.

3. The automatic welding device for a trolley chassis according to claim 2, characterized in that: A mounting rod (62) is fixedly provided on the piston rod of the propulsion cylinder (6), and a cleaning brush (63) is fixedly provided on one end of the mounting rod (62) away from the piston rod, wherein the bristles of the cleaning brush (63) can abut against the peripheral wall of the roller (61).

4. The automatic welding device for a trolley chassis according to claim 1, characterized in that: The positioning assembly (2) comprises a positioning bracket (21) and a toggle clamp (22), wherein a plurality of the toggle clamps (22) are provided, and the toggle clamps (22) are fixedly arranged on the positioning bracket (21). A pushing cylinder (221) is provided below each of the plurality of toggle clamps (22), and the pushing cylinder (221) is fixedly arranged on the upper surface of the positioning platform (1), and a piston rod of the pushing cylinder (221) is fixedly connected to a handle of the toggle clamp (22); the positioning bracket (21) is fixedly arranged on the positioning platform (1), and a plurality of trolley chassis assemblies can be placed in a specified position of the positioning bracket (21).

5. The automatic welding device for a trolley chassis according to claim 4, characterized in that: A plastic buckle (222) is fixedly provided at one end of the piston rod of the pushing cylinder (221) away from the main body thereof, and the inner peripheral wall of the plastic buckle (222) can abut against the peripheral wall of the handle of the toggle clamp (22).

6. The automatic welding device for a trolley chassis according to claim 1, characterized in that: The grasping device (7) comprises a receiving platform (71), a first supporting tube (72), a second supporting tube (73), an automatic slide rail (74), a telescopic cylinder (75), an automatic grasping clamp (76) and a rotating assembly (77); the receiving platform (71) is located on a side of the storage box (41) away from the positioning platform (1); one end of the first supporting tube (72) is fixedly arranged on the upper surface of the receiving platform (71); the first supporting tube (72) extends upward along the height direction of the receiving platform (71); One end of the second support tube (73) is connected to one end of the first support tube (72) away from the receiving platform (71); the automatic slide rail (74) is fixedly arranged on the second support tube (73); one end of the feeding cylinder (43) away from its own piston rod is slidably connected to the automatic slide rail (74); the inductive gripper is fixedly arranged on the piston rod of the feeding cylinder (43); the inductive gripper is located below the second support tube (73); the rotating assembly (77) can drive the first support rod to rotate along its own axis.

7. The automatic welding device for a trolley chassis according to claim 6, characterized in that: The automatic gripping clamp (76) is provided with an anti-slip rubber pad (761).

8. The automatic welding device for a trolley chassis according to claim 6, characterized in that: The rotating assembly (77) comprises a rotating motor (771) and a connecting ring plate (772); a second mounting groove (711) is provided in the receiving platform (71); the first supporting tube (72) is hollow inside, and the first supporting tube (72) is inserted into the second mounting groove (711); the outer wall of the connecting ring plate (772) is fixedly connected to the inner wall of the first supporting tube (72); the inner wall of the connecting ring plate (772) is fixedly connected to the peripheral wall of the driving shaft of the rotating motor (771); and the first supporting tube (72) is rotatably connected to the receiving platform (71).

9. The automatic welding device for a trolley chassis according to claim 8, characterized in that: A rotating gear (9) is arranged in the first support tube (72), the rotating gear (9) is fixedly connected to the driving shaft of the rotating motor (771), and the rotating gear (9) and the driving shaft of the rotating motor (771) are coaxial; a rotating roller (721) and a transmission bar (722) are arranged in the first support tube (72), the rotating roller (721) is rotatably connected to the inner side wall of the first support tube (72), and the transmission bar (722) is tensionedly connected to the rotating roller (721); a gear pattern (7221) is arranged on the transmission bar (722), and a sliding arrangement is arranged in the first support tube (72). A double-sided rack (8) is provided, one side tooth pattern surface of the double-sided rack (8) meshes with a rotating gear (9), and the other side tooth pattern surface of the double-sided rack (8) meshes with a gear pattern (7221); the first support tube (72) is provided with a through hole (723) along its own height direction, a connecting rod (724) is rotatably connected to the transmission bar (722), the connecting rod (724) is arranged to pass through the through hole (723), and one end of the connecting rod (724) away from the transmission bar (722) is rotatably connected to the second support tube (73), and the first support tube (72) is rotatably connected to the second support tube (73).

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