Displacement machine for welding hydraulic oil cylinder accessories and using method

Abstract

The invention discloses a positioner for hydraulic oil cylinder accessory welding and a using method, and belongs to the field of hydraulic oil cylinder machining equipment.The positioner comprises a workbench, a plurality of fixing devices are arranged on the upper end face of the workbench in the left-right direction, a welding assembly is further arranged on the rear side of the workbench, and the welding assembly moves left and right through a rail arranged in the left-right direction; a displacement mechanism is further arranged in the workbench and used for driving each fixing device to rotate by 180 degrees. By arranging the fixing devices and the position changing mechanism, during use, the cylinder barrel is fixed through the fixing devices firstly, then a connector at the rear end of the cylinder barrel is welded through the welding assembly, and then each fixing device is driven by the position changing mechanism to rotate by 180 degrees, so that the cylinder body fixed in each fixing device rotates by 180 degrees; the welding efficiency of the cylinder barrel accessory is improved, and the purpose of completing welding operation of the connectors at the two ends of the cylinder barrel through one-time fixing is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic cylinder processing equipment, and in particular relates to a positioner for welding hydraulic cylinder accessories and a use method thereof. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When a hydraulic cylinder realizes reciprocating motion, it can eliminate the need for a deceleration device, and there is no transmission gap, so the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of a hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, and a sealing device. The hydraulic cylinder also includes some accessories, such as connectors and lifting rings. The piston is located in the cylinder barrel and divides the space in the cylinder barrel into two chambers, an upper chamber and a lower chamber. Two connectors are welded on the cylinder barrel to connect to the hydraulic oil pipes respectively. One connector is connected to the upper chamber, and the other connector is connected to the lower chamber to realize the entry and exit of hydraulic oil in the upper and lower chambers.

[0003] When welding the two connecting heads of the cylinder, robot welding is currently the most commonly used method. The robot is set on a track to achieve the movement of the robot and perform welding operations on each cylinder.

[0004] The welds of cylinder barrel connectors and lifting rings are relatively complex, so most of the welding is done by manual marking and positioning, and the welding efficiency is relatively slow. Currently, industrial robots are used to replace manual welding, but the fixation and positioning of the workpiece are relatively complicated, and the operation efficiency is low. Since the robot is generally only set on one side of the workbench, when welding on the other end of the cylinder barrel, the cylinder barrel needs to be rotated 180 degrees and re-fixed.

[0005] After searching, the patent number is: CN118268801A, which provides an automated workstation for welding hydraulic cylinder accessories. The dual-axis dual-station positioner has a welding station and a preparation station. The two stations can be alternately transformed through the rotation of the main shaft. Two workpieces can be clamped at the same time to ensure that the welding robot can continuously perform welding operations, which can effectively improve production efficiency.

[0006] In the above technical solution, the device for fixing the cylinder is relatively complicated, the number of power elements increases the manufacturing cost, the process is complicated, and the algorithm running time is long. Summary of the invention

[0007] The purpose of the present invention is to provide a hydraulic cylinder accessory welding positioner and a method of use, which has the advantages of convenient fixing and positioning, and can complete the welding operation in one fixation, and effectively solves the problems of manual welding, slow welding efficiency, and low efficiency of robot welding fixing and positioning operations in the prior art.

[0008] The present invention adopts the following technical solutions: A positioner for welding hydraulic cylinder accessories comprises a workbench, wherein the upper end surface of the workbench is provided with a plurality of fixing devices along the left and right directions, a welding assembly is also provided at the rear side of the workbench, and the welding assembly moves left and right via tracks provided along the left and right directions; a positioner is also provided inside the workbench, and the positioner is used to drive each fixing device to rotate 180 degrees.

[0009] Furthermore, the fixing device includes a plurality of bottom blocks with V-shaped grooves on the upper end surfaces of the workbench arranged along the front-to-back direction, the V-shaped grooves are arranged on the upper end surfaces of the bottom blocks along the front-to-back direction, and a plurality of bottom blocks are evenly arranged on the upper end surfaces of the workbench along the left-to-right direction, and a pressure block is fixed to the front and rear ends of the upper end surface of each bottom block by bolts.

[0010] Furthermore, the shifting mechanism includes a slide plate slidably arranged along the left and right directions, the upper end surface of the slide plate is provided with a guide portion corresponding to the bottom block along the left and right directions, the lower end surface of each bottom block is fixedly provided with a rotating shaft, the bottom end of each rotating shaft passes downward through the workbench and is connected to the guide portion, the shifting mechanism also includes a limiting rod arranged parallel to the rotating shaft, the limiting rod is fixedly arranged with the rotating shaft through a connecting block, and the bottom end of the limiting rod 11 is connected to the guide portion.

[0011] Furthermore, the guide portion is a guide block having a guide groove on the upper end surface, the guide groove includes a rotating shaft guide groove and a limiting rod guide groove, the bottom end of the rotating shaft is located in the rotating shaft guide groove, the limiting rod is located in the limiting rod guide groove, the rotating shaft guide groove is a straight groove arranged in the left and right directions, the limiting rod guide groove is opened on the inner bottom wall of the rotating shaft guide groove, and the limiting rod guide groove includes straight grooves at both ends and an arc groove located between the two straight grooves.

[0012] Furthermore, among the several bottom blocks arranged in sequence from left to right, a lifting mechanism is arranged under the bottom blocks located at odd-numbered positions, and the lifting mechanism is used to drive the bottom blocks located at odd-numbered positions to lift upward to a set height.

[0013] Furthermore, the lifting mechanism includes a spline rotatably connected to the upper part of the outer surface of the rotating shaft fixedly arranged on the lower end surface of the odd-numbered bottom block, the spline and the workbench are slidably arranged in the up and down directions, and the left and right side surfaces of the guide block corresponding to the odd-numbered bottom block are provided with driving inclined surfaces; a return spring is sleeved on the rotating shaft above the connecting block, and an annular plate is arranged on the top of the return spring, the annular plate is fixed to the workbench, and the bottom end of the return spring is fixed to the connecting block; a telescopic rod is sleeved in the corresponding limiting rod, and a telescopic spring is arranged in the limiting rod located above the telescopic rod, and the telescopic spring pushes the telescopic rod to move downward all the time.

[0014] Furthermore, a base is fixedly provided on the lower end surface of the workbench, a vertical plate is slidably provided in the base located in front of the workbench along the up and down directions, a positioning plate is slidably provided in the vertical plate along the front and back directions, the left and right length of the positioning plate is matched with the left and right length of the workbench, a positioning plate driving device and a vertical plate driving device are also provided on the vertical plate, the positioning plate driving device is used to drive the positioning plate to move forward and backward, and the vertical plate driving device is used to drive the vertical plate to move up and down; the slide plate is slidably provided on the base along the left and right directions.

[0015] Furthermore, the vertical plate driving device includes a horizontal plate fixedly arranged on the front side of the vertical plate, and a top screw is arranged in the horizontal plate along the vertical direction, and the top screw is threadedly connected to the horizontal plate.

[0016] Furthermore, the vertical plate is slidably arranged in a vertical groove provided on the upper end surface of the base along the vertical direction, a tension spring is fixedly arranged in the vertical groove below the vertical plate, a horizontal groove is provided on the left side surface of the vertical plate, a telescopic block is slidably arranged in the horizontal groove along the left and right directions, a clamping block is fixedly arranged on the outer end of the telescopic block, a special-shaped rod is fixedly arranged on the front side surface of the slide plate, corresponding inclined surfaces are provided on the free end of the special-shaped rod and the left side surface of the clamping block, the special-shaped rod and the base are slidably arranged along the left and right directions, and a horizontal spring is fixedly arranged in the horizontal groove on the right side of the telescopic block.

[0017] Method for using the positioner for welding hydraulic cylinder accessories as described in any of the above items: A: Fix the cylinder barrel on a bottom block through a pressing block so that the cylinder barrel is centered relative to the bottom block, and fix both ends of the cylinder barrel through pressing blocks; B: Screwing the top screw drives the positioning plate to move upward to the positioning position through the horizontal plate and the vertical plate; at the same time, the horizontal spring pushes the clamping block to move outward through the telescopic block, so that the clamping block is located on the upper end surface of the free end of the special-shaped rod; screwing the top screw in the opposite direction causes the bottom end of the top screw to move upward and separate from the upper end surface of the base; the positioning drive device drives the positioning plate to move backward, so that the rear side surface of the positioning plate contacts the front end of the fixed cylinder barrel; fixing the remaining cylinder barrels, so that the front end of each cylinder barrel contacts the rear side surface of the positioning plate; C: The welding assembly moves left and right on the track to weld the connector at the rear end of each cylinder; D: After the connector at the rear end of each cylinder is welded, the slide moves to the left, and the slide drives the special-shaped rod to move to the left synchronously, so that the free end of the special-shaped rod is separated from the bottom of the clamping block, and the vertical plate moves downward under the tension of the tension spring, driving the positioning plate to move downward, so that the upper end surface of the positioning plate is located below the end surface of the workbench; E: At the same time, the rotating shaft connected to the odd-numbered bottom block moves upward under the drive of the corresponding driving inclined surface of the guide block, thereby driving the odd-numbered bottom block to move upward to a set height; F: The limiting rod rotates around the rotating shaft under the guidance of the limiting rod guide groove until the limiting rod rotates to the other symmetrical side of the rotating shaft, so that the limiting rod drives the rotating shaft to rotate 180 degrees through the connecting block; G: The reset spring pushes the shaft through the connecting block to drive the spline to move downward in the workbench, driving the odd-numbered bottom blocks to move downward for reset; H: Weld the connector of the other end of the cylinder using the welding assembly; I: The connector at the other end of each cylinder is welded and the operation is completed.

[0018] 1. The present invention is provided with a fixing device and a displacement mechanism. When in use, the cylinder is first fixed by the fixing device, and then the connector is welded to the rear end of the cylinder by the welding assembly. Then, each fixing device is driven to rotate 180 degrees by the displacement mechanism, so that the cylinder body fixed in each fixing device rotates 180 degrees, and then the connector is welded to the other end of the cylinder body, thereby improving the welding efficiency of the cylinder accessories and achieving the purpose of fixing once and completing the welding operation of the connectors at both ends of the cylinder.

[0019] 2. The present invention is provided with a lifting mechanism. When the cylinder needs to be rotated 180 degrees, the lifting mechanism is used to drive the odd-numbered bottom blocks to lift up to a set height. Then, the odd-numbered and even-numbered bottom blocks are rotated 180 degrees at the same time to achieve a 180-degree flip of the cylinder. Then, the lifting mechanism drives the odd-numbered bottom blocks to move downward to reset the bottom blocks. Through the lifting mechanism, when the bottom blocks rotate, the odd-numbered bottom blocks are driven to lift up to a set height and then rotate 180 degrees. The spacing between adjacent bottom blocks can be set smaller to ensure that the rotation of adjacent odd-numbered bottom blocks does not interfere with each other, thereby effectively reducing the length of the workbench in the left-right direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal three-dimensional structure of the base of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement at point A; Figure 4 It is a schematic diagram of the internal structure of the base in the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure at B in FIG. Figure 6 It is a schematic diagram of the three-dimensional structure of the bottom block in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the arc-shaped through hole in the present invention; Figure 8For the present invention Figure 7 A schematic diagram of the structure at position C in FIG. Fig. 9 It is a schematic diagram of the three-dimensional structure of the spline in the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the rotating shaft in the present invention; Fig.11 It is a schematic diagram of the internal three-dimensional structure of the limiting rod in the present invention; Fig.12 It is a schematic diagram of the top view structure of the guide groove in the present invention; Fig.13 It is a schematic diagram of the three-dimensional structure of the mechanical arm in the present invention; Fig.14 For the present invention Fig.13 A schematic diagram of the structure at D in FIG. Fig.15 It is a schematic diagram of the three-dimensional structure of the skateboard in the present invention; Fig.16 It is a schematic diagram of the three-dimensional structure of the positioning plate in the present invention; Fig.17 It is a schematic diagram of the three-dimensional structure of the top wire in the present invention; Fig.18 It is a schematic diagram of the internal three-dimensional structure of the base in the present invention; Fig.19 It is a schematic diagram of the three-dimensional structure of the horizontal plate in the present invention; Fig. 20 It is a schematic diagram of the three-dimensional structure of the vertical plate in the present invention.

[0021] In the figure, 1, workbench; 2, fixing device; 3, cylinder; 4, welding assembly; 5, track; 6, connector; 7, bottom block; 8, pressure block; 9, slide plate; 10, rotating shaft; 11, limiting rod; 12, connecting block; 13, guide block; 14, rotating shaft guide groove; 15, limiting rod guide groove; 16, straight groove; 17, arc groove; 18, spline; 19, driving inclined plane; 20, reset spring; 21, annular plate; 22, telescopic rod; 23, telescopic spring; 24, arc through hole; 25, base; 26, vertical plate; 27, positioning plate; 28, horizontal plate; 29, top screw; 30, vertical groove; 31, tension spring; 32, telescopic block; 33, clamping block; 34, special-shaped rod; 35, horizontal spring; 36, driving bolt; 37, support plate; 38, hydraulic telescopic rod. DETAILED DESCRIPTION

[0022] See also Figure 1-20 The azimuth angle words appearing in the following embodiments are all represented by Figure 4 The present invention is described in detail below with reference to the accompanying drawings and embodiments: The hydraulic cylinder attachment welding positioner of the present invention comprises a workbench 1, wherein the upper end surface of the workbench 1 is provided with a plurality of fixing devices 2 along the left-right direction, wherein the fixing devices 2 are used to fix the cylinder barrel 3 of the hydraulic cylinder, wherein the cylinder barrel 3 is provided along the front-back direction, and a welding assembly 4 is further provided on the rear side of the workbench 1, wherein the welding assembly 4 is moved left-right by means of a track 5 provided along the left-right direction so as to weld the attachments of each cylinder barrel 3, and the attachments of the hydraulic cylinder are provided with a connector 6, wherein the connector 6 is used for connecting the hydraulic oil hose so as to realize the purpose of the hydraulic oil entering and exiting the cylinder barrel 3; after the connector 6 is welded to the rear end of the cylinder barrel 3, the connector 6 needs to be welded to the front end of the cylinder barrel 3 The same connectors 6 are welded, and the two connectors 6 are respectively connected to the upper and lower chambers of the piston in the cylinder 3 to realize the hydraulic oil in and out of the upper and lower chambers; in order to facilitate the welding of the connectors 6 on both sides of the cylinder 3, a displacement mechanism is also provided in the workbench 1, and the displacement mechanism is used to drive each fixing device 2 to rotate 180 degrees. After the connector 6 is welded to the rear end of the cylinder 3, each fixing device 2 is driven to rotate 180 degrees by the displacement mechanism, so that the cylinder 3 fixed in each fixing device 2 is rotated 180 degrees, and then the connector 6 is welded to the other end of the cylinder 3, thereby improving the welding efficiency of the accessories of the cylinder 3 and saving time and labor.

[0023] In this embodiment, the fixing device 2 includes a plurality of bottom blocks 7 with V-shaped grooves on the upper end surfaces of the workbench 1 arranged along the front-to-back direction. The V-shaped grooves are arranged on the upper end surfaces of the bottom blocks 7 along the front-to-back direction. A plurality of bottom blocks 7 are evenly arranged on the upper end surfaces of the workbench 1 along the left-to-right direction. The front and rear ends of the upper end surface of each bottom block 7 are fixed with pressure blocks 8 by bolts. When in use, the cylinder barrel 3 is placed in the V-shaped groove of the bottom block 7, and then the cylinder barrel 3 is fixed by the pressure blocks 8 at both ends to achieve the purpose of fixing the cylinder barrel 3.

[0024] In this embodiment, the displacement mechanism includes a slide plate 9 which is slidably arranged in the left and right directions, and a guide portion corresponding to the bottom block 7 is arranged on the upper end surface of the slide plate 9 in the left and right directions. A rotating shaft 10 is fixedly arranged on the lower end surface of each bottom block 7, and the bottom end of each rotating shaft 10 passes through the workbench 1 downward and is slidably connected with the guide portion. The displacement mechanism also includes a limiting rod 11 which is arranged parallel to the rotating shaft 10, and the limiting rod 11 is fixedly arranged with the rotating shaft 10 through a connecting block 12, and the bottom end of the limiting rod 11 is slidably connected with the guide portion; when the cylinder barrel 3 needs to rotate 180 degrees, the slide plate 9 is moved left or right, so that the slide plate 9 drives the guide portion to move, and the movement of the guide portion drives the limiting rod 11 to rotate 180 degrees. The limiting rod 11 drives the rotating shaft 10 to rotate 180 degrees through the connecting block 12, and the rotating shaft 10 drives the bottom block 7 to rotate 180 degrees, and the bottom block 7 drives the cylinder barrel 3 to rotate 180 degrees, thereby achieving the purpose of rotating the cylinder barrel 3 180 degrees.

[0025] In this embodiment, the guide portion is a guide block 13 with a guide groove on the upper end surface, the guide groove includes a shaft guide groove 14 and a limiting rod guide groove 15, the bottom end of the shaft 10 is located in the shaft guide groove 14, the limiting rod 11 is located in the limiting rod guide groove 15, the shaft guide groove 14 is a straight groove 16 arranged in the left and right directions, the limiting rod guide groove 15 is arranged on the inner bottom wall of the shaft guide groove 14, the limiting rod guide groove 15 includes straight grooves 16 at both ends and an arc groove 17 located between the two straight grooves 16; when the cylinder 3 needs to rotate 180 degrees, the slide plate 9 is moved left or right, so that the slide plate 9 drives the guide block 13 to move, and the guide block 13 moves so that the shaft 10 slides in the shaft guide groove 14, and the limiting rod 11 moves. The limiting rod 11 slides in the limiting rod guide groove 15. When the limiting rod 11 enters the arc groove 17 of the limiting rod guide groove 15, the limiting rod 11 drives the rotating shaft 10 to rotate through the connecting block 12. As the slide plate 9 continues to move, the limiting rod 11 moves to the limit point of the arc groove 17 of the limiting rod guide groove 15, and the limiting rod 11 drives the rotating shaft 10 to rotate ninety degrees. As the slide plate 9 continues to move, the limiting rod 11 continues to rotate around the rotating shaft 10 until the limiting rod 11 rotates to the other side of the rotating shaft 10, that is, the limiting rod 11 drives the rotating shaft 10 to continue to rotate ninety degrees, and finally achieves the purpose of the limiting rod 11 driving the rotating shaft 10 to rotate 180 degrees, thereby achieving the purpose of rotating the cylinder 3 180 degrees.

[0026] In the above scheme, the spacing between the several bottom blocks 7 needs to be set large enough to ensure that there is no interference when the bottom blocks 7 rotate. This requires that the left and right lengths of the workbench 1 be made longer, increasing the manufacturing cost. At the same time, it is also necessary to increase the left and right lengths of the track 5 to match the length of the workbench 1, thereby increasing the left and right moving distance of the welding assembly 4 and increasing the operating cost.

[0027] In order to solve the above technical problems, in this embodiment, Figure 4 , the first bottom block 7 on the left is numbered 1, and from left to right they are 1, 2, 3, 4, 5, 6, 7, 8, 9 ..., wherein a lifting mechanism is provided below the bottom blocks 7 of odd numbers, and the lifting mechanism is used to drive the bottom blocks 7 of odd numbers to lift up to a set height, and then the bottom blocks 7 of odd numbers and even numbers simultaneously rotate 180 degrees to realize the turning of the cylinder 3 by 180 degrees, and then the lifting mechanism drives the bottom blocks 7 of odd numbers to move downward, so that the bottom blocks 7 are reset; by providing the lifting mechanism, when the bottom blocks 7 rotate, the bottom blocks 7 of odd numbers are driven to lift up to a set height and then rotate 180 degrees, and the spacing between adjacent bottom blocks 7 can be set smaller to ensure that the rotation of adjacent bottom blocks 7 of odd numbers does not interfere.

[0028] In this embodiment, the lifting mechanism includes a spline 18 rotatably connected to the upper part of the outer surface of the rotating shaft 10 fixedly arranged on the lower end surface of the odd-numbered bottom block 7, the spline 18 is slidably arranged with the workbench 1 in the up and down directions, and the left and right side surfaces of the guide block 13 corresponding to the odd-numbered bottom block 7 are provided with a driving inclined surface 19; a return spring 20 is sleeved on the rotating shaft 10 above the connecting block 12, and an annular plate 21 is arranged on the top of the return spring 20, the annular plate 21 is fixedly arranged with the workbench 1, and the bottom end of the return spring 20 is fixedly arranged with the connecting block 12, and the return spring 20 drives the rotating shaft 10 to move downward through the connecting block 12, so that the bottom end of the rotating shaft 10 is always in contact with the driving inclined surface 19 and the bottom of the rotating shaft guide groove 14; a telescopic rod 22 is sleeved in the corresponding limiting rod 11, and a telescopic spring 23 is arranged in the limiting rod 11 located above the telescopic rod 22, and the telescopic spring 23 pushes the telescopic rod 22 to move downward all the time.

[0029] When the cylinder 3 needs to rotate 180 degrees, move the slide plate 9 to the left, so that the slide plate 9 drives the guide block 13 to move, wherein the guide block 13 corresponding to the odd number forces the rotating shaft 10 and the telescopic rod 22 to move upward by driving the inclined surface 19, and the rotating shaft 10 drives the spline 18 to move upward in the workbench 1 while driving the bottom block 7 to move upward. When the bottom block 7 moves upward to a set height, the bottom end of the rotating shaft 10 enters the rotating shaft guide groove 14 and stops moving upward. During this period, the telescopic rod 22 moves upward in the limiting rod 11 to compress the telescopic spring 23, and the limiting rod 11 moves upward synchronously with the rotating shaft 10 through the connecting block 12; as the slide plate 9 continues to move, the limiting rod 11 slides in the limiting rod guide groove 15, and when the limiting rod 11 enters the arc groove 17 of the limiting rod guide groove 15, the limiting rod 11 drives the rotating shaft 10 to rotate through the connecting block 12, and as the slide plate 9 continues to move When the limiting rod 11 moves to the limit point of the arc groove 17 of the limiting rod guide groove 15, the limiting rod 11 drives the rotating shaft 10 to rotate 90 degrees. As the slide plate 9 continues to move, the limiting rod 11 continues to rotate around the rotating shaft 10 until the limiting rod 11 rotates to the other side of the rotating shaft 10, achieving the purpose of the limiting rod 11 driving the rotating shaft 10 to rotate 180 degrees, thereby achieving the purpose of the cylinder 3 rotating 180 degrees. At this time, the rotating shaft 10 connected to the odd-numbered bottom block 7 moves downward under the drive of the reset spring 20, so that the bottom end of the rotating shaft 10 contacts the driving inclined surface 19 on the right side of the corresponding guide block 13, so that the rotating shaft 10 moves downward, thereby driving the odd-numbered bottom block 7 to move downward and reset. At this point, the 180-degree rotation of the bottom block 7 is completed, and then the other end of the cylinder 3 is welded to the connecting head 6, which improves the welding efficiency of the cylinder 3 accessories and saves time and effort.

[0030] In order to increase the smoothness of the rotation of the limiting rod 11, in the present embodiment, the top end of the limiting rod 11 extends upward to be flush with the upper end surface of the workbench 1, and an arc-shaped through hole 24 is provided at a position on the upper end surface of the workbench 1 corresponding to the limiting rod 11. When the limiting rod 11 moves, it moves along the arc-shaped trajectory of the arc-shaped through hole 24 in the arc-shaped through hole 24, thereby increasing the smoothness of the movement of the limiting rod 11.

[0031] In order to achieve the positioning of the cylinder barrel 3 when fixing the cylinder barrel 3, in the present embodiment, a base 25 is fixedly provided on the lower end surface of the workbench 1, a vertical plate 26 is slidably provided in the up-and-down direction in the base 25 located in front of the workbench 1, a positioning plate 27 is slidably provided in the front-and-rear direction in the vertical plate 26, the left-and-right length of the positioning plate 27 is matched with the left-and-right length of the workbench 1, a positioning plate driving device and a vertical plate driving device are also provided on the vertical plate 26, the positioning plate driving device is used for driving the positioning plate 27 to move forward and backward, and the vertical plate driving device is used for driving the vertical plate 26 to move up and down.

[0032] When in use, first fix the cylinder 3 and place the cylinder 3 in the V-groove of each bottom block 7, then fix the two ends of the cylinder 3 by the pressing block 8, and fix the pressing block 8 by bolts. When fixing, the two ends of the cylinder 3 need to extend out of the two ends of the bottom block 7 by the same length. For the same batch of cylinders 3, the ends of the same side of the cylinder 3 are flush. In the absence of a positioning plate 27, the cylinders 3 need to be fixed one by one and aligned one by one, which is a lot of work, wastes time, and reduces work efficiency. The above technical problems can be well solved by setting a positioning plate 27. The method of use is to first determine that a cylinder 3 is centered and fixed, and then fix it by a positioning plate 27. The positioning plate driving device drives the positioning plate 27 to approach the bottom block 7 until the rear side surface of the positioning plate 27 contacts the end of the front end of the cylinder 3, and then the remaining cylinders 3 are fixed. When each cylinder 3 is fixed, ensure that the cylinder 3 contacts the rear side surface of the positioning plate 27; when all the cylinders 3 are fixed, the vertical plate 26 is driven downward by the vertical plate driving device so that the upper end surface of the positioning plate 27 is located below the upper end surface of the workbench 1, and then the connecting head 6 is welded by the welding assembly 4; after the cylinder 3 is positioned, the purpose of moving the positioning plate 27 downward is not to interfere with the 180-degree rotation of the cylinder 3.

[0033] In this embodiment, the vertical plate driving device includes a horizontal plate 28 fixedly arranged on the front side surface of the vertical plate 26, and a top screw 29 is arranged in the horizontal plate 28 along the vertical direction, and the top screw 29 is threadedly connected to the horizontal plate 28; by screwing the top screw 29, the bottom end of the top screw 29 moves downward and contacts the upper end surface of the base 25, and continuing to turn the top screw 29 in the same direction can make the top screw 29 drive the vertical plate 26 to move upward through the horizontal plate 28.

[0034] In order to enable the positioning plate 27 to automatically descend when the cylinder 3 rotates, thereby saving operation time, in this embodiment, the vertical plate 26 is slidably arranged in the vertical direction in the vertical groove 30 opened on the upper end surface of the base 25, a tension spring 31 is fixedly arranged in the vertical groove 30 below the vertical plate 26, a horizontal groove is opened on the left side of the vertical plate 26, a telescopic block 32 is slidably arranged in the horizontal groove along the left and right directions, a clamping block 33 is fixedly arranged on the outer end of the telescopic block 32, a special-shaped rod 34 is fixedly arranged on the front side of the slide plate 9, and the free end of the special-shaped rod 34 and the left side surface of the clamping block 33 are both provided with corresponding inclined surfaces, the special-shaped rod 34 and the base 25 are slidably arranged in the left and right directions, and a horizontal spring 35 is fixedly arranged in the horizontal groove on the right side of the telescopic block 32.

[0035] When the cylinder 3 is fixed in use, the vertical plate 26 is first driven upward by the vertical plate driving device, so that the vertical plate 26 drives the positioning plate 27 to move upward to the position of the positioning cylinder 3. In the initial stage of the upward movement of the vertical plate 26, the block 33 is located below the free end of the special-shaped rod 34, and the inclined surface of the free end of the special-shaped rod 34 and the block 33 cooperate with each other, so that the block 33 pushes the telescopic block 32 to move toward the inside of the vertical plate 26 to compress the horizontal spring 35. When the vertical plate 26 drives the positioning plate 27 to move upward to the position of the positioning cylinder 3, the block 33 is located above the free end of the special-shaped rod 34, and the horizontal spring 35 pushes the telescopic block 32 and the block 33 to move outward, so that the block 33 moves to the top of the free end of the special-shaped rod 34, and the top screw 29 is screwed at this time. , so that the bottom end of the top screw 29 moves upward and away from the upper end surface of the base 25, and the vertical plate 26 tends to move downward under the action of the tension spring 31, but because the block 33 is located above the free end of the special-shaped rod 34, the vertical plate 26 is prevented from moving downward. When the cylinder 3 needs to rotate 180 degrees, the slide plate 9 moves to the left, and the movement of the slide plate 9 drives the special-shaped rod 34 to move synchronously to the left, so that the free end of the special-shaped rod 34 disengages from the bottom of the block 33, and the tension spring 31 pulls the vertical plate 26 to move downward, and then the vertical plate 26 drives the positioning plate 27 to move downward, so that the upper end surface of the positioning plate 27 moves to below the upper end surface of the workbench 1 without interfering with the rotation of the bottom block 7; when used next time, the positioning plate 27 can be driven to move upward to the positioned position by screwing the top screw 29.

[0036] In this embodiment, the positioning plate driving device includes a driving bolt 36 arranged in the vertical plate 26 along the front-to-back direction. The driving bolt 36 is rotatably connected to the vertical plate 26 through a bearing and does not move forward and backward. The driving bolt 36 passes through the positioning plate 27 and is threadedly connected to the positioning plate 27. By rotating the driving bolt 36, the positioning plate 27 can be driven to move forward and backward, thereby achieving the purpose of driving the positioning plate 27 to move forward and backward.

[0037] In this embodiment, a support plate 37 is fixedly provided on the vertical plate 26 along the left-right direction. The upper end surface of the support plate 37 is in sliding contact with the lower end surface of the positioning plate 27 to support the positioning plate 27 .

[0038] In order to achieve the purpose of driving the slide plate 9 to move left and right, in this embodiment, a hydraulic telescopic rod 38 is fixedly provided on the upper end surface of the base 25, and the output end of the hydraulic telescopic rod 38 is fixedly provided on the left side surface of the slide plate 9, and the slide plate 9 can be driven to move left and right by the hydraulic telescopic rod 38.

[0039] In this embodiment, the welding assembly 4 includes a robotic arm and a welding gun fixed to the execution end of the robotic arm. The robotic arm controls the welding gun to perform welding operations. The welding assembly 4 is a prior art and will not be described in detail here.

[0040] Directions: A: Fix the cylinder barrel 3 on a bottom block 7 through a pressing block 8, so that the cylinder barrel 3 is centered relative to the bottom block 7, and fix both ends of the cylinder barrel 3 through the pressing block 8; B: Screwing the top screw 29 drives the positioning plate 27 to move upward to the positioning position through the horizontal plate 28 and the vertical plate 26; at the same time, the horizontal spring 35 pushes the clamping block 33 to move outward through the telescopic block 32, so that the clamping block 33 is located on the upper end surface of the free end of the special-shaped rod 34; screwing the top screw 29 in the opposite direction makes the bottom end of the top screw 29 move upward and separate from the upper end surface of the base 25; screwing the driving bolt 36 drives the positioning plate 27 to move backward, so that the rear side surface of the positioning plate 27 contacts the front end of the fixed cylinder 3; fixing the remaining cylinders 3, so that the front end of each cylinder 3 contacts the rear side surface of the positioning plate 27; C: The welding assembly 4 moves left and right on the track 5 to weld the connector 6 at the rear end of each cylinder 3; D: After the connector 6 at the rear end of each cylinder 3 is welded, the hydraulic telescopic rod 38 drives the slide plate 9 to move to the left, and the slide plate 9 drives the special-shaped rod 34 to move to the left synchronously, so that the free end of the special-shaped rod 34 is separated from the bottom of the block 33, and the vertical plate 26 moves downward under the tension of the tension spring 31, driving the positioning plate 27 to move downward, so that the upper end surface of the positioning plate 27 is located below the upper end surface of the workbench 1; E: At the same time, the rotating shaft 10 connected to the odd-numbered bottom block 7 moves upward under the drive of the corresponding driving inclined surface 19 of the guide block 13, thereby driving the odd-numbered bottom block 7 to move upward to a set height; F: The limiting rod 11 rotates around the rotating shaft 10 under the guidance of the limiting rod guide groove 15 until the limiting rod 11 rotates to the other symmetrical side of the rotating shaft 10, so that the limiting rod 11 drives the rotating shaft 10 to rotate 180 degrees through the connecting block 12; G: The reset spring 20 pushes the rotating shaft 10 through the connecting block 12 to drive the spline 18 to move downward in the workbench 1, and drives the odd-numbered bottom blocks 7 to move downward for reset; H: The welding assembly 4 welds the connector 6 to the other end of the cylinder 3; I: The connector 6 at the other end of each cylinder 3 is welded and the operation is completed.

[0041] When the bottom block 7 is rotated next time, the hydraulic telescopic rod 38 drives the slide plate 9 to move to the right.

Claims

1. A hydraulic cylinder attachment welding positioner, characterized in that: The workbench (1) comprises a workbench (1), wherein the upper end surface of the workbench (1) is provided with a plurality of fixing devices (2) along the left-right direction, and a welding assembly (4) is also provided at the rear side of the workbench (1), and the welding assembly (4) is moved left-right via a track (5) provided along the left-right direction; and a displacement mechanism is also provided inside the workbench (1), and the displacement mechanism is used to drive each fixing device (2) to rotate 180 degrees.

2. The hydraulic cylinder attachment welding positioner according to claim 1, characterized in that: The fixing device (2) comprises a plurality of bottom blocks (7) with V-shaped grooves on their upper end surfaces, which are arranged on the upper end surfaces of the workbench (1) along the front-back direction. The V-shaped grooves are arranged on the upper end surfaces of the bottom blocks (7) along the front-back direction. The plurality of bottom blocks (7) are evenly arranged on the upper end surfaces of the workbench (1) along the left-right direction. A pressure block (8) is fixed to the front and rear ends of the upper end surface of each bottom block (7) by bolts.

3. The hydraulic cylinder attachment welding positioner according to claim 2, characterized in that: The displacement mechanism comprises a slide plate (9) slidably arranged in the left-right direction, the upper end surface of the slide plate (9) is provided with a guide portion corresponding to the bottom block (7) in the left-right direction, the lower end surface of each bottom block (7) is fixedly provided with a rotating shaft (10), the bottom end of each rotating shaft (10) penetrates downwardly through the workbench (1) and is connected to the guide portion, and the displacement mechanism also comprises a limiting rod (11) arranged parallel to the rotating shaft (10), the limiting rod (11) is fixedly arranged with the rotating shaft (10) through a connecting block (12), and the bottom end of the limiting rod (11) is connected to the guide portion.

4. The hydraulic cylinder attachment welding positioner according to claim 3, characterized in that: The guide portion is a guide block (13) having a guide groove on its upper end surface, the guide groove comprising a shaft guide groove (14) and a limiting rod guide groove (15), the bottom end of the shaft (10) is located in the shaft guide groove (14), the limiting rod (11) is located in the limiting rod guide groove (15), the shaft guide groove (14) is a straight groove (16) arranged in the left and right directions, the limiting rod guide groove (15) is arranged on the inner bottom wall of the shaft guide groove (14), and the limiting rod guide groove (15) comprises straight grooves (16) at both ends and an arc groove (17) located between the two straight grooves (16).

5. The hydraulic cylinder attachment welding positioner according to claim 4, characterized in that: Among the plurality of bottom blocks arranged in sequence from left to right, a lifting mechanism is arranged below the bottom blocks (7) located at odd-numbered positions, and the lifting mechanism is used to drive the bottom blocks (7) located at odd-numbered positions to lift upward to a set height.

6. The hydraulic cylinder attachment welding positioner according to claim 5, characterized in that: The lifting mechanism comprises a spline (18) rotatably connected to the upper part of the outer surface of the rotating shaft (10) fixedly arranged on the lower end surface of the bottom block (7) located at the odd-numbered position, the spline (18) and the workbench (1) are slidably arranged in the up-down direction, and the left and right side surfaces of the guide block (13) corresponding to the bottom block (7) with the odd number are provided with driving inclined surfaces (19); a return spring (20) is sleeved on the rotating shaft (10) above the connecting block (12), a ring plate (21) is arranged at the top of the return spring (20), the ring plate (21) is fixedly arranged on the workbench (1), and the bottom end of the return spring (20) is fixedly arranged on the connecting block (12); a telescopic rod (22) is sleeved inside the corresponding limiting rod (11), and a telescopic spring (23) is arranged inside the limiting rod (11) located above the telescopic rod (22), and the telescopic spring (23) pushes the telescopic rod (22) to always move downward.

7. The hydraulic cylinder attachment welding positioner according to claim 6, characterized in that: The lower end surface of the workbench (1) is fixedly provided with a base (25), a vertical plate (26) is slidably provided in the base (25) located in front of the workbench (1) in the up-down direction, a positioning plate (27) is slidably provided in the vertical plate (26) in the front-back direction, the left-right length of the positioning plate (27) is adapted to the left-right length of the workbench (1), a positioning plate driving device and a vertical plate driving device are also provided on the vertical plate (26), the positioning plate driving device is used to drive the positioning plate (27) to move forward and backward, and the vertical plate driving device is used to drive the vertical plate (26) to move up and down; the slide plate (9) is slidably provided on the base (25) in the left-right direction.

8. The hydraulic cylinder attachment welding positioner according to claim 7, characterized in that: The vertical plate driving device comprises a horizontal plate (28) fixedly arranged on the front side of the vertical plate (26), a top screw (29) being arranged in the horizontal plate (28) along the vertical direction, and the top screw (29) being threadedly connected to the horizontal plate (28).

9. The hydraulic cylinder attachment welding positioner according to claim 8, characterized in that: The vertical plate (26) is slidably arranged in a vertical groove (30) provided on the upper end surface of the base (25) in the vertical direction, a tension spring (31) is fixedly arranged in the vertical groove (30) located below the vertical plate (26), a horizontal groove is provided on the left side surface of the vertical plate (26), a telescopic block (32) is slidably arranged in the horizontal groove in the left-right direction, a clamping block (33) is fixedly arranged at the outer end of the telescopic block (32), a special-shaped rod (34) is fixedly arranged on the front side surface of the slide plate (9), a free end of the special-shaped rod (34) and a left side surface of the clamping block (33) are provided with matching inclined surfaces, the special-shaped rod (34) and the base (25) are slidably arranged in the left-right direction, and a horizontal spring (35) is fixedly arranged in the horizontal groove located on the right side of the telescopic block (32).

10. The method for using the hydraulic cylinder attachment welding positioner according to any one of claims 1 to 9, characterized in that: A: Fix the cylinder barrel (3) on a bottom block (7) by means of a pressing block (8) so that the cylinder barrel (3) is centered relative to the bottom block (7), and fix both ends of the cylinder barrel (3) by means of the pressing block (8); B: The top screw (29) is screwed through the horizontal plate (28) and the vertical plate (26) to drive the positioning plate (27) to move upward to the positioning position; at the same time, the horizontal spring (35) pushes the clamping block (33) to move outward through the telescopic block (32), so that the clamping block (33) is located on the upper end surface of the free end of the special-shaped rod (34); the top screw (29) is screwed in the opposite direction, so that the bottom end of the top screw (29) moves upward and separates from the upper end surface of the base (25); the positioning drive device drives the positioning plate (27) to move backward, so that the rear side surface of the positioning plate (27) contacts the front end of the fixed cylinder barrel (3); the remaining cylinder barrels (3) are fixed, so that the front end of each cylinder barrel (3) contacts the rear side surface of the positioning plate (27); C: The welding assembly (4) moves left and right on the track (5) to weld the connector (6) at the rear end of each cylinder (3); D: After the connector (6) at the rear end of each cylinder barrel (3) is welded, the slide plate (9) moves to the left, and the slide plate (9) drives the special-shaped rod (34) to move synchronously to the left, so that the free end of the special-shaped rod (34) is separated from the bottom of the clamping block (33), and the vertical plate (26) moves downward under the tension of the tension spring (31), driving the positioning plate (27) to move downward, so that the upper end surface of the positioning plate (27) is located below the upper end surface of the workbench (1); E: At the same time, the rotating shaft (10) connected to the bottom block (7) located at the odd-numbered position moves upward under the drive of the driving inclined surface (19) of the corresponding guide block (13), thereby driving the bottom block (7) located at the odd-numbered position to move upward to a set height; F: The limiting rod (11) rotates around the rotating shaft (10) under the guidance of the limiting rod guide groove (15) until the limiting rod (11) rotates to the other symmetrical side of the rotating shaft (10), so that the limiting rod (11) drives the rotating shaft (10) to rotate 180 degrees through the connecting block (12); G: The return spring (20) pushes the rotating shaft (10) through the connecting block (12), driving the spline (18) to move downward in the workbench (1), and driving the bottom block (7) located at the odd-numbered position to move downward for return; H: welding the welding assembly (4) to the connecting head (6) at the other end of the cylinder (3); I: The connector (6) at the other end of each cylinder (3) is welded, completing the operation.

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