Mechanical part design welding device and welding method

Abstract

The invention belongs to the technical field of mechanical welding, and particularly relates to a mechanical part design welding device and method.The mechanical part design welding device comprises a cam divider and a supporting table arranged around the cam divider and further comprises a to-be-machined plate-shaped mechanical part, and the upper surface of an intermittent rotary disc of the cam divider is fixedly connected with a supporting bottom plate through a connecting rod; a transposition mechanism is arranged on the upper surface of the supporting bottom plate, a pressing mechanism is arranged on the upper surface of a fixing shaft of the cam divider, and a waste heat absorption mechanism is arranged on the outer surface of the pressing mechanism. According to the mechanical part design welding device and welding method, the supporting bottom plate is controlled by the cam indexer to rotate intermittently, so that the adjusting gear meshed with the fixed gear rotates, the supporting shaft rotates by 90 degrees, and then the clamped plate-shaped mechanical part rotates by 90 degrees; the side faces of the plate-shaped mechanical part are located at the corresponding welding stations, different welding of the four side faces is completed, and therefore it is avoided that parts which are welded independently are broken when conveyed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical welding, and in particular to a mechanical parts design welding device and a welding method. Background Art

[0002] In the manufacturing and processing of mechanical parts, welding, as a common and key connection technology, is widely used in the connection and repair of metal parts. The design of welding equipment and the selection of welding methods have an important impact on welding quality, efficiency, cost and other aspects. With the advancement of industrialization, welding technology has also been continuously developing, and automation, precision and intelligence have become a trend. Therefore, it is particularly important to design an efficient and accurate welding device and welding method for mechanical parts.

[0003] In recent years, automated welding technology has gradually become the mainstream. Through advanced technologies such as robot welding and laser welding, the accuracy and speed of the welding process have been significantly improved. Automated welding equipment can greatly improve production efficiency, reduce the risk of manual operation, and reduce labor costs while ensuring welding quality.

[0004] However, when welding two plate-like mechanical parts, since they have four or more sides, when all four sides need to be welded, the existing welding methods are mostly to complete one side of the batch of parts and then flow to the next line to weld the other side, which results in a large space occupied by the overall equipment. At the same time, when welding plate-like parts, due to different welding requirements at different parts, large welding stress may be generated. Excessive stress may cause cracks or cracks in the material. Therefore, it is necessary to reasonably design the welding stress during the welding process to ensure that the parts are welded in the same time period to eliminate the defects caused by time-divided welding. Therefore, the invention solves the shortcomings of the above-mentioned technical problems. Summary of the invention

[0005] Based on the above-mentioned existing technical problems, the present invention proposes a mechanical parts design welding device and a welding method.

[0006] A mechanical parts design welding device proposed in the present invention includes a cam divider and a support platform arranged around the cam divider, and also includes a plate-shaped mechanical part to be processed, the upper surface of the support platform is fixedly connected to a welding robot and a material picking robot, the upper surface of the intermittent turntable of the cam divider is fixedly connected to a supporting base plate through a connecting rod, the upper surface of the supporting base plate is provided with a transfer mechanism, the upper surface of the fixed shaft of the cam divider is provided with a pressing mechanism, and the outer surface of the pressing mechanism is provided with a waste heat absorption mechanism.

[0007] Wherein, the transfer mechanism clamps and fixes the plate-shaped mechanical parts to be processed, and adjusts their welding orientation.

[0008] Wherein, the pressing mechanism performs pressing and positioning on the plate-shaped mechanical parts being welded.

[0009] The waste heat absorption mechanism absorbs and utilizes the spatter and high-temperature gas generated during welding.

[0010] Preferably, the indexing mechanism comprises a support shaft rotatably connected to the upper surface of the support base plate through bearings and distributed in a circular array, the upper surface of the support shaft is fixedly connected to a driving base block, and the upper surface of the driving base block is rotatably connected to a clamping base plate.

[0011] Through the above technical scheme, plate-like mechanical parts generally have four sides, and the welding requirements of each side are different. In order to perform different welding on the four sides of this batch of plate-like mechanical parts at the same time and improve efficiency, four workstations are set on the upper surface of the supporting base plate, which just correspond to the four sides of the plate-like mechanical parts, so that the four plate-like mechanical parts can be welded at the same time. When the welding of one side at the workstation is completed, the driving bottom block rotates with the intermittent rotation of the supporting base plate, so that the other sides of the plate-like mechanical parts can be rotated to the corresponding welding station for welding.

[0012] Preferably, the transfer mechanism also includes a convex clamping block slidably connected to the upper surface of the clamping base plate, one side surface of the clamping block is in sliding contact with one side surface of the plate-like mechanical part, the upper surface of the clamping base plate is symmetrically provided with mounting grooves, the inner bottom wall of the mounting groove is fixedly connected with a guide rail, and the lower surface of the clamping block is fixedly connected with a connecting slider.

[0013] Through the above technical scheme, in order to fix the plate-like mechanical parts on the clamping base plate and facilitate welding processing on one side of the surface, the two clamping blocks are close to each other after passing through the guide limit of the guide rail and the connecting slider, thereby clamping and fixing the left and right sides of the plate-like mechanical parts. After the plate-like mechanical parts are transferred, the clamping blocks rotate circumferentially to always keep clamping the left and right sides of the plate-like mechanical parts.

[0014] Preferably, the transfer mechanism also includes movable grooves symmetrically distributed and penetrated through the upper surface of the clamping base plate, the lower surface of the clamping block is fixedly connected to a driving rod, the outer surface of the driving rod is slidingly connected to the inner wall of the movable groove, the bottom inner wall of the movable groove is rotatably connected to a double-headed screw through a bearing, and the lower end of the driving rod is threadedly sleeved on the corresponding end outer surface of the double-headed screw.

[0015] Through the above technical scheme, in order to realize the automatic adaptive clamping of the outer surface of the plate-like mechanical parts by the clamping block, the double-headed screw in the movable groove is rotated so that the driving rods at both ends are moved horizontally and approached, thereby driving the clamping block to realize the clamping action, and a pressure sensor is arranged inside the clamping block to control the clamping force.

[0016] Preferably, a linkage cavity is opened inside the clamping base plate, a driving gear is fixedly sleeved on the middle outer surface of the double-headed screw, the inner wall of the linkage cavity is rotatably connected to the driving screw through a bearing, the driving screw is meshed with the driving gear, a driven gear is fixedly sleeved on the outer surface of the lower end of the driving screw, a rotating motor is fixedly installed on the inner top wall of the linkage cavity, the outer surface of the output shaft of the rotating motor is fixedly connected to the driving gear through a coupling, and the driven gear is meshed with the driving gear.

[0017] Through the above technical scheme, in order to drive the double-headed screws on both sides to rotate and realize the movement of the clamping block driven by the driving rod, the rotating motor can drive the double-headed screw on one side to rotate through the mutual engagement between the gears and the screws according to the spatial layout inside the clamping base plate, and the meshing relationship between the gears and the screws can have a self-locking function for the rotation of the double-headed screw, so that the clamping force adjustment of the clamping block is more precise.

[0018] Preferably, the middle outer surfaces of the two double-headed screws are symmetrically distributed and transmission-connected with a linkage belt assembly, a connecting cavity is opened inside the clamping base plate, and the two ends of the connecting cavity are fixedly connected to the inside of the movable grooves on both sides, a driving motor is fixedly installed inside the driving base block, and the outer surface of the output shaft of the driving motor is fixedly connected to the lower surface of the clamping base plate.

[0019] Through the above technical scheme, in order to make the double-headed screws on both sides rotate synchronously and ensure the relative movement of the two clamping blocks, the linkage belt assembly can realize the synchronous rotation of the two double-headed screws. In order to realize the circumferential rotation of the clamping block and make the clamping block adapt to the rotation adjustment of the plate-like mechanical parts, after the plate-like mechanical parts are rotated, the clamping block is relaxed, and after the driving motor drives the clamping base plate to rotate 90°, the left and right sides of the rotated plate-like mechanical parts are clamped again.

[0020] Preferably, the transfer mechanism also includes a support column fixedly connected to the upper surface of the fixed shaft of the cam divider, the outer surface of the support column is fixedly sleeved with a fixed gear, the upper surface of the support base plate is rotatably connected to the rotating shafts in a circular array through bearings, the outer surface of the upper end of the rotating shaft is fixedly sleeved with an adjusting gear, and multiple adjusting gears are meshed with the fixed gear, and the outer surface of the support shaft is transmission-connected to the outer surface of the corresponding rotating shaft via a transmission pulley assembly.

[0021] Through the above technical scheme, in order to realize the rotation adjustment of plate-like mechanical parts, when the cam divider controls the intermittent rotation of the supporting base plate, the fixed gear remains stationary, and multiple rotating shafts rotate circumferentially with the supporting base plate, so that the adjustment gear meshing with the fixed gear rotates, and then the supporting shaft is controlled to rotate 90° through the transmission pulley assembly, and then the clamped plate-like mechanical parts are rotated 90°, so that the side of the plate-like mechanical parts are in the corresponding welding position.

[0022] Preferably, a limiting guide wheel is fixedly connected to the upper surface of the support base plate, and the outer surface of the limiting guide wheel is in sliding contact with the outer surface of the transmission belt of the transmission pulley assembly. The upper surface of the support base plate is also fixedly connected to a grease wheel, and the outer surface of the grease wheel is in sliding contact with the inner surface of the transmission belt of the transmission pulley assembly.

[0023] Through the above technical scheme, in order to maintain the transmission stability of the transmission pulley assembly and maintain the positioning transmission of the transmission belt, the transmission belt is abutted by a limiting guide wheel, and in order to increase the service life of the transmission belt, the grease wheel rubs the inner surface of the transmission belt to increase its lubricity.

[0024] Preferably, the pressing mechanism includes a rotating groove opened on the upper surface of the clamping base plate, the inner wall of the rotating groove is fixedly connected to a limiting ring, the outer surface of the limiting ring is rotatably clamped with a positioning block, and the upper surface of the positioning block is in sliding contact with the lower surface of the clamping base plate.

[0025] Through the above technical scheme, in order to adjust the position of the clamping block after the plate-like mechanical parts are transferred and facilitate the clamping and fixing of the two sides of the plate-like mechanical parts, the plate-like mechanical parts are placed on the upper surface of the positioning block to keep the position fixed, and then the clamping base plate is rotated 90° on the outer surface of the positioning block through the limit ring, and then the clamping block completes the clamping, thereby ensuring the stability of welding.

[0026] Preferably, a limiting plate is fixedly connected to the upper surface of the fixed shaft of the cam divider, the lower surface of the limiting plate is in sliding contact with the upper surface of the clamping base plate, the upper surface of the limiting plate is fixedly connected to a lifting hydraulic press, the upper surface of the hydraulic rod of the lifting hydraulic press is fixedly connected to a cross-shaped pressing plate, the upper surface of the plate-like mechanical part is in sliding contact with a buffer pressure pad, and the upper surface of the buffer pressure pad is fixedly connected to a buffer telescopic rod with a buffer spring.

[0027] Through the above technical scheme, in order to press the plate-like mechanical parts on the positioning block and avoid the movement of the parts when the clamping base plate is rotated, the hydraulic rod of the lifting hydraulic press drives the pressing plate to move downward before the clamping base plate is rotated, so that the buffer pressure pad can be pressed on the upper surface of the plate-like mechanical parts after the buffer telescopic rod is extended and retracted, thereby fixing its position. At the same time, the position of the parts is fixed through the clamping of the clamping block, making the welding more precise. When the plate-like mechanical parts are transferred, the lifting hydraulic press controls the buffer pressure pad to disengage from the crimping of the parts, thereby realizing the correct transfer of the plate-like mechanical parts.

[0028] Preferably, the waste heat absorption mechanism includes an exhaust fan fixedly connected to the lower surface of the pressing plate through a connecting column, the lower surface of the exhaust fan is fixedly connected to a heat recovery box, the upper surface of the buffer telescopic rod is fixedly connected to the inner top surface of the heat recovery box, the inner surface of the heat recovery box is fixedly connected to a filter bag, and one side surface of the heat recovery box is fixedly connected to an absorption bent pipe, and one end of the absorption bent pipe is fixedly connected to the interior of the filter bag.

[0029] The outer surface of the heat recovery box is fixedly connected with a thermoelectric power generation sheet, the upper surface of the pressing plate is fixedly connected with a battery pack, and the lower surface of one end of the pressing plate is fixedly connected with an inverter, the inverter is electrically connected to multiple groups of the thermoelectric power generation sheets, and the inverter is electrically connected to the battery pack.

[0030] Through the above technical scheme, the welding robot arms at multiple workstations will generate sparks when working, and at the same time increase the ambient temperature, thereby reducing safety performance. In order to utilize the heat generated by the welding robot arms and absorb the sparks, the pressing plate drives the buffer pressure pad to press on the upper surface of the plate-shaped mechanical parts, and the exhaust fan is activated to make the absorption elbow facing the welding robot arm absorb the generated sparks, so that the high-temperature gas is filtered through the filter bag to avoid polluting the environment. At the same time, when the high-temperature gas circulates inside the heat recovery box, it interacts with the temperature difference power generation sheet to generate electricity. The electricity is converted from direct current to alternating current through the inverter and then transmitted to the battery pack for storage and utilization.

[0031] A welding method of a mechanical parts welding device proposed by the present invention comprises the following steps: S1. After one of the material-retrieving manipulators places the plate-shaped mechanical parts to be processed on the upper surface of the positioning block, the rotating motor in the linkage cavity realizes the rotation of the driving screw through the meshing of the driving gear and the driven gear, and then the rotating driving screw realizes the rotation of the double-headed screw on one side through the meshing with the driving gear, and then the double-headed screw on the other side rotates synchronously under the transmission of the linkage pulley assembly; S2. At this time, the two rotating double-headed screws make the driving rods at both ends move horizontally and close to each other, thereby driving the connecting slider on the lower surface of the clamp block to move horizontally on the outer surface of the guide rail, thereby completing the clamping and fixing of the left and right sides of the plate-shaped mechanical parts by the clamp block; S3, after the clamping block completes the clamping, the hydraulic rod of the jacking hydraulic press drives the press plate to move downward, so that the buffer pressure pad can be pressed on the upper surface of the plate-shaped mechanical part after the buffer telescopic rod is extended and retracted, thereby fixing its position. At the same time, the position of the part is fixed by the clamping of the clamping block, and then the welding robot arm at the corresponding position welds the corresponding side of the plate-shaped mechanical part; S4. After the welding of one side of the four plate-like mechanical parts is completed, the four plate-like mechanical parts are adjusted for rotation, and the welding of the other side surfaces is completed synchronously. Therefore, during the rotation adjustment, the jacking hydraulic press controls the buffer pressure pad to disengage the crimping of the parts, and then the cam divider controls the intermittent rotation of the support base plate, the fixed gear remains stationary, and the multiple rotating shafts rotate circumferentially with the support base plate, so that the adjustment gear meshing with the fixed gear rotates, and the support shaft is controlled to rotate 90° through the transmission pulley assembly, and then the clamped plate-like mechanical parts are rotated 90°, so that the side of the plate-like mechanical parts are at the corresponding welding position; S5. After the plate-like mechanical part is transferred, the hydraulic rod of the lifting hydraulic press drives the pressing plate to move downward, so that the buffer pressure pad and the positioning block clamp the upper and lower surfaces of the plate-like mechanical part together. At this time, the clamping block is released from the clamping of the part, and the driving motor drives the clamping bottom plate to rotate 90° and then re-clamp the left and right sides of the transferred plate-like mechanical part; S6, then the welding robot arm at the corresponding position performs welding, and during welding, the exhaust fan is activated so that the absorption elbow facing the welding robot arm absorbs the generated spark splashes, so that the high-temperature gas is filtered through the filter bag to avoid polluting the environment. At the same time, when the high-temperature gas circulates inside the heat recovery box, it interacts with the temperature difference power generation sheet to generate electricity, and the electricity is converted from direct current to alternating current through the inverter and then transmitted to the battery pack for storage and utilization; S7. When the plate-shaped mechanical parts with four sides welded are taken away by another material-retrieving robot, new plate-shaped mechanical parts are put on at the same time, thus completing the assembly line operation.

[0032] The beneficial effects of the present invention are: 1. By setting up a transfer mechanism, the plate-shaped mechanical parts can be intermittently rotated to complete a circumferential rotation. During the adjustment process, the cam divider is used to control the intermittent rotation of the support base plate, the fixed gear remains stationary, and multiple rotating shafts rotate circumferentially with the support base plate, so that the adjustment gear meshing with the fixed gear rotates. Therefore, the support shaft is controlled to rotate 90° through the transmission pulley assembly, and then the clamped plate-shaped mechanical parts are rotated 90°, so that the side of the plate-shaped mechanical parts is in the corresponding welding station, so that the batch of parts can complete different welding of the four sides within the same time period, thereby avoiding the collapse of the parts welded separately during transportation.

[0033] 2. By setting up a pressing mechanism, the stability of welding can be improved. During the adjustment process, the pressing plate is driven downward by the hydraulic rod of the jacking hydraulic press, so that the buffer pressure pad can be pressed on the upper surface of the plate-shaped mechanical part after the buffer telescopic rod is extended and retracted, thereby fixing its position. At the same time, the position of the part can be fixed by clamping the clamping block, which can facilitate the stability of the part during welding and facilitate the transfer adjustment of the part.

[0034] 3. By setting up a waste heat absorption mechanism, welding resources can be utilized to avoid safety hazards caused by spatter during welding. During the adjustment process, the exhaust fan is activated to allow the absorption elbow facing the welding robot arm to absorb the generated spark spatter, so that the high-temperature gas is filtered through the filter bag to avoid polluting the environment. At the same time, when the high-temperature gas circulates inside the heat recovery box, it interacts with the temperature difference power generation sheet to generate electricity. The electricity is converted from direct current to alternating current through the inverter and then transmitted to the battery pack for storage and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a welding device and a welding method for mechanical parts proposed by the present invention; Figure 2 A three-dimensional diagram of the cam divider structure of a mechanical parts design welding device and welding method proposed by the present invention; Figure 3 A three-dimensional diagram of the supporting base structure of a welding device and a welding method for mechanical parts proposed by the present invention; Figure 4 A three-dimensional diagram of the driving bottom block structure of a mechanical parts design welding device and welding method proposed by the present invention; Figure 5 A three-dimensional diagram of a clamping block structure of a mechanical parts welding device and welding method proposed by the present invention; Figure 6 A three-dimensional diagram of the guide rail structure of a mechanical parts welding device and welding method proposed by the present invention; Figure 7A three-dimensional diagram of the positioning block structure of a mechanical parts welding device and welding method proposed by the present invention; Figure 8 A three-dimensional diagram of the connecting slider structure of a mechanical parts design welding device and welding method proposed by the present invention; Fig. 9 A three-dimensional diagram of a double-headed screw structure of a mechanical parts welding device and welding method proposed by the present invention; Fig.10 A three-dimensional diagram of the driving gear structure of a mechanical parts design welding device and welding method proposed by the present invention; Fig.11 A three-dimensional diagram of the structure of a press plate for a mechanical parts welding device and welding method proposed by the present invention; Fig.12 A three-dimensional diagram of the structure of a thermoelectric power generation sheet for a mechanical parts welding device and welding method proposed by the present invention; Fig.13 A three-dimensional diagram of the structure of the absorption elbow for a mechanical parts design welding device and welding method proposed by the present invention; Fig.14 A three-dimensional diagram of the buffer pressure pad structure of a mechanical parts welding device and welding method proposed by the present invention.

[0036] In the figure: 1, cam divider; 2, support table; 21, welding manipulator; 22, material taking manipulator; 23, plate-shaped mechanical parts; 3, support base plate; 4, transfer mechanism; 41, support shaft; 42, driving base block; 43, clamping base plate; 44, clamping block; 45, guide rail; 46, connecting slider; 47, movable groove; 48, driving rod; 49, double-headed screw; 50, linkage cavity; 51, driving gear; 52, driving screw; 53, driven gear; 54, rotating motor; 55, driving gear; 56, linkage belt assembly; 57, driving motor machine; 58, support column; 59, fixed gear; 60, rotating shaft; 61, adjusting gear; 62, driving pulley assembly; 63, limiting guide wheel; 64, grease wheel; 7, pressing mechanism; 71, rotating groove; 72, limiting ring; 73, positioning block; 74, limiting plate; 75, lifting hydraulic press; 76, pressing plate; 77, buffer pressure pad; 78, buffer telescopic rod; 8, waste heat absorption mechanism; 81, exhaust fan; 82, heat recovery box; 83, filter bag; 84, absorption elbow; 85, temperature difference power generation sheet; 86, battery pack; 87, inverter. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figure 1-Figure 14 A mechanical part welding device is designed, including a cam divider 1 and a support platform 2 arranged around the cam divider 1, and also includes a plate-shaped mechanical part 23 to be processed. The upper surface of the support platform 2 is fixedly connected with a welding manipulator 21 and a material picking manipulator 22. The upper surface of the intermittent turntable of the cam divider 1 is fixedly connected with a supporting base plate 3 through a connecting rod. The upper surface of the supporting base plate 3 is provided with a transfer mechanism 4. The upper surface of the fixed shaft of the cam divider 1 is provided with a pressing mechanism 7, and the outer surface of the pressing mechanism 7 is provided with a waste heat absorption mechanism 8.

[0039] The transfer mechanism 4 clamps and fixes the plate-shaped mechanical part 23 to be processed, and adjusts its welding position.

[0040] A plate-like mechanical part 23 generally has four sides, each of which has different welding requirements. In order to perform different welding on the four sides of a batch of plate-like mechanical parts 23 at the same time and improve efficiency, the transfer mechanism 4 includes a support shaft 41 that is rotatably connected to the upper surface of the support base plate 3 shown in the figure through a bearing and distributed in a circular array. The upper surface of the support shaft 41 is fixedly connected to a driving base block 42, and the upper surface of the driving base block 42 is rotatably connected to a clamping base plate 43. Four workstations are provided on the upper surface of the support base plate 3, which correspond to the four sides of the plate-like mechanical parts 23, so that four plate-like mechanical parts 23 can be welded at the same time. When the welding of one side at the workstation is completed, the driving base block 42 rotates with the intermittent rotation of the support base plate 3, so that the other sides of the plate-like mechanical parts 23 can be rotated to the corresponding welding stations for welding.

[0041] In order to fix the plate-like mechanical part 23 on the clamping base plate 43 and facilitate welding processing on one side surface thereof, the transfer mechanism 4 also includes a convex clamping block 44 slidably connected to the upper surface of the clamping base plate 43, one side surface of the clamping block 44 is in sliding contact with one side surface of the plate-like mechanical part 23, and the upper surface of the clamping base plate 43 is symmetrically provided with mounting grooves, the inner bottom wall of the mounting groove is fixedly connected with a guide rail 45, and the lower surface of the clamping block 44 is fixedly connected with a connecting slider 46. The two clamping blocks 44 approach each other after being guided and limited by the guide rail 45 and the connecting slider 46, so as to clamp and fix the left and right sides of the plate-like mechanical part 23. After the plate-like mechanical part 23 is transferred, the clamping block 44 rotates circumferentially to always keep clamping the left and right sides of the plate-like mechanical part 23.

[0042] In order to realize the automatic adaptive clamping of the outer surface of the plate-like mechanical part 23 by the clamping block 44, the transfer mechanism 4 also includes movable grooves 47 which are symmetrically distributed and penetrated through the upper surface of the clamping base plate 43. The lower surface of the clamping block 44 is fixedly connected with a driving rod 48. The outer surface of the driving rod 48 is slidingly connected to the inner wall of the movable groove 47. The inner wall of the bottom end of the movable groove 47 is rotatably connected with a double-headed screw 49 through a bearing. The lower end of the driving rod 48 is threadedly sleeved on the outer surface of the corresponding end of the corresponding double-headed screw 49. By rotating the double-headed screw 49 in the movable groove 47, the driving rods 48 at both ends are horizontally moved closer, thereby driving the clamping block 44 to realize the clamping action. A pressure sensor is arranged inside the clamping block 44 to control the clamping force.

[0043] In order to drive the double-headed screws 49 on both sides to rotate and realize the movement of the clamping block 44 driven by the driving rod 48, a linkage cavity 50 is opened inside the clamping base plate 43, and a driving gear 51 is fixedly sleeved on the middle outer surface of the double-headed screw 49. The inner wall of the linkage cavity 50 is rotatably connected with a driving screw 52 through a bearing, and the driving screw 52 is meshed with the driving gear 51. A driven gear 53 is fixedly sleeved on the outer surface of the lower end of the driving screw 52. A rotating motor 54 is fixedly installed on the inner top wall of the linkage cavity 50. A driving gear 55 is fixedly connected to the outer surface of the output shaft of the rotating motor 54 through a coupling. The driven gear 53 is meshed with the driving gear 55. According to the spatial layout inside the clamping base plate 43, the rotating motor 54 can drive the double-headed screw 49 on one side to rotate through the mutual meshing between the gears and the screws, and the meshing relationship between the gears and the screws can have a self-locking function for the rotation of the double-headed screw 49, so that the clamping force adjustment of the clamping block 44 is more precise.

[0044] In order to make the double-headed screws 49 on both sides rotate synchronously and ensure the relative movement of the two clamping blocks 44, the middle outer surfaces of the two double-headed screws 49 are symmetrically distributed and connected with a linkage belt assembly 56. A connecting cavity is opened inside the clamping base plate 43, and the two ends of the connecting cavity are fixedly connected with the inside of the movable grooves 47 on both sides. The linkage belt assembly 56 can realize the synchronous rotation of the two double-headed screws 49. In order to realize the circumferential rotation of the clamping block 44 and make the clamping block 44 adapt to the rotation adjustment of the plate-like mechanical part 23, a driving motor 57 is fixedly installed inside the driving base block 42. The outer surface of the output shaft of the driving motor 57 is fixedly connected to the lower surface of the clamping base plate 43. After the plate-like mechanical part 23 is rotated, the clamping block 44 is relaxed, and after the driving motor 57 drives the clamping base plate 43 to rotate 90°, the left and right sides of the rotated plate-like mechanical part 23 are clamped again.

[0045] In order to realize the rotation adjustment of the plate-like mechanical part 23, the rotation mechanism 4 also includes a support column 58 fixedly connected to the upper surface of the fixed shaft of the cam divider 1, and the outer surface of the support column 58 is fixedly sleeved with a fixed gear 59. The upper surface of the support base plate 3 is rotatably connected with rotating shafts 60 through bearings and in a circular array. The upper end outer surface of the rotating shaft 60 is fixedly sleeved with an adjusting gear 61, and multiple adjusting gears 61 are all meshed with the fixed gear 59. The outer surface of the support shaft 41 is transmission-connected with the outer surface of the corresponding rotating shaft 60 by a transmission pulley assembly 62. When the cam divider 1 controls the intermittent rotation of the support base plate 3, the fixed gear 59 remains stationary, and the multiple rotating shafts 60 rotate circumferentially with the support base plate 3, so that the adjusting gear 61 meshed with the fixed gear 59 rotates, and thus the support shaft 41 is controlled to rotate 90° through the transmission pulley assembly 62, and then the clamped plate-like mechanical part 23 is rotated 90°, so that the side of the plate-like mechanical part 23 is in the corresponding welding position.

[0046] In order to maintain the transmission stability of the transmission pulley assembly 62 and maintain the positioning transmission of the transmission belt, the upper surface of the supporting base plate 3 is fixedly connected to a limiting guide wheel 63, and the outer surface of the limiting guide wheel 63 is in sliding contact with the outer surface of the transmission belt of the transmission pulley assembly 62. The upper surface of the supporting base plate 3 is also fixedly connected to a grease wheel 64, and the outer surface of the grease wheel 64 is in sliding contact with the inner surface of the transmission belt of the transmission pulley assembly 62, and the transmission belt is abutted through the limiting guide wheel 63. In order to increase the service life of the transmission belt, the grease wheel 64 can increase its lubricity when rubbing against the inner surface of the transmission belt.

[0047] By setting up the transfer mechanism 4, the plate-like mechanical part 23 can be intermittently rotated to complete one circumferential rotation. During the adjustment process, the cam divider 1 is used to control the intermittent rotation of the support base plate 3, the fixed gear 59 remains stationary, and the multiple rotating shafts 60 rotate circumferentially with the support base plate 3, so that the adjustment gear 61 meshing with the fixed gear 59 rotates, and then the support shaft 41 is controlled to rotate 90° through the transmission pulley assembly 62, and then the clamped plate-like mechanical part 23 is rotated 90°, so that the side of the plate-like mechanical part 23 is in the corresponding welding station, so that the batch of parts can complete different welding of the four sides within the same time period, thereby avoiding the collapse of the individually welded parts during transportation.

[0048] The pressing mechanism 7 performs pressing and positioning of the plate-shaped mechanical parts 23 being welded.

[0049] In order to adjust the position of the clamping block 44 after the plate-like mechanical part 23 is rotated and facilitate clamping and fixing the two sides of the plate-like mechanical part 23, the pressing mechanism 7 includes a rotating groove 71 opened on the upper surface of the clamping base plate 43, the inner wall of the rotating groove 71 is fixedly connected to the limiting ring 72, the outer surface of the limiting ring 72 is rotatably clamped with a positioning block 73, the upper surface of the positioning block 73 is in sliding contact with the lower surface of the clamping base plate 43, the plate-like mechanical part 23 is placed on the upper surface of the positioning block 73 to keep the position fixed, and then the clamping base plate 43 is rotated 90° on the outer surface of the positioning block 73 through the limiting ring 72, and then the clamping block 44 completes the clamping, thereby ensuring the stability of welding.

[0050] In order to press the plate-like mechanical part 23 on the positioning block 73 and avoid the movement of the part when the clamping base plate 43 is rotated, the upper surface of the fixed shaft of the cam divider 1 is fixedly connected to a limit plate 74, the lower surface of the limit plate 74 is in sliding contact with the upper surface of the clamping base plate 43, the upper surface of the limit plate 74 is fixedly connected to a lifting hydraulic press 75, the upper surface of the hydraulic rod of the lifting hydraulic press 75 is fixedly connected to a cross-shaped pressing plate 76, the upper surface of the plate-like mechanical part 23 is in sliding contact with a buffer pressure pad 77, and the upper surface of the buffer pressure pad 77 is fixedly connected with a The buffer telescopic rod 78 of the buffer spring, before the clamping base plate 43 rotates, the hydraulic rod of the jacking hydraulic press 75 drives the pressing plate 76 to move downward, so that the buffer pressure pad 77 can be pressed on the upper surface of the plate-like mechanical part 23 after the buffer telescopic rod 78 is extended and retracted, thereby fixing its position. At the same time, the position of the part is fixed through the clamping of the clamping block 44, making the welding more precise. When the plate-like mechanical part 23 is transferred, the jacking hydraulic press 75 controls the buffer pressure pad 77 to disengage from the crimping of the part, thereby realizing the correct transfer of the plate-like mechanical part 23.

[0051] By setting up the pressing mechanism 7, the stability of welding can be improved. During the adjustment process, the pressing plate 76 is driven downward by the hydraulic rod of the jacking hydraulic machine 75, so that the buffer pressure pad 77 can be pressed on the upper surface of the plate-like mechanical part 23 after the buffer telescopic rod 78 is extended and retracted, thereby fixing its position. At the same time, the position of the part can be fixed by clamping the clamping block 44, which can facilitate the stability of the part during welding and facilitate the part to be transferred and adjusted.

[0052] The residual heat absorption mechanism 8 absorbs and utilizes the spatter and high-temperature gas generated during welding.

[0053] The welding robot arms at multiple workstations will generate sparks when working, and at the same time increase the ambient temperature, thereby reducing safety performance. In order to utilize the heat generated by the welding robot arms and absorb the sparks, the waste heat absorption mechanism 8 includes an exhaust fan 81 fixedly connected to the lower surface of the pressure plate 76 through a connecting column, the lower surface of the exhaust fan 81 is fixedly connected to a heat recovery box 82, the upper surface of the buffer telescopic rod 78 is fixedly connected to the inner top surface of the heat recovery box 82, the inner surface of the heat recovery box 82 is fixedly connected to a filter bag 83, and one side surface of the heat recovery box 82 is fixedly connected to an absorption elbow 84, one end of the absorption elbow 84 is fixedly connected to the inside of the filter bag 83, and after the pressure plate 76 drives the buffer pressure pad 77 to press on the upper surface of the plate-like mechanical part 23, the exhaust fan 81 is activated, so that the absorption elbow 84 facing the welding robot arm absorbs the generated sparks, so that the high-temperature gas is filtered through the filter bag 83 to avoid polluting the environment.

[0054] The outer surface of the heat recovery box 82 is fixedly connected with a thermoelectric power generation sheet 85, the upper surface of the pressing plate 76 is fixedly connected with a battery pack 86, and the lower surface of one end of the pressing plate 76 is fixedly connected with an inverter 87. The inverter 87 is electrically connected to multiple groups of thermoelectric power generation sheets 85, and the inverter 87 is electrically connected to the battery pack 86. When the high-temperature gas flows inside the heat recovery box 82, it reacts with the thermoelectric power generation sheet 85 to generate electricity. The electricity is converted from direct current to alternating current through the inverter 87 and then transmitted to the battery pack 86 for storage and utilization.

[0055] By setting up the waste heat absorption mechanism 8, welding resources can be utilized to avoid safety hazards caused by spatter during welding. During the adjustment process, the exhaust fan 81 is activated to enable the absorption elbow 84 facing the welding robot arm to absorb the generated spark spatter, so that the high-temperature gas is filtered through the filter bag 83 to avoid polluting the environment. At the same time, when the high-temperature gas circulates inside the heat recovery box 82, it interacts with the temperature difference power generation sheet 85 to generate electricity. The electricity is converted from direct current to alternating current through the inverter 87 and then transmitted to the battery pack 86 for storage and utilization.

[0056] Reference Figure 1-Figure 14 , a welding method of a mechanical part design welding device, comprising the following steps: S1. After one of the material-retrieving manipulators 22 places the plate-shaped mechanical part 23 to be processed on the upper surface of the positioning block 73, the rotating motor 54 in the linkage cavity 50 realizes the rotation of the driving screw 52 through the meshing of the driving gear 55 and the driven gear 53, and then the rotating driving screw 52 realizes the rotation of the double-headed screw 49 on one side through the meshing with the driving gear 51, and then the double-headed screw 49 on the other side rotates synchronously under the transmission of the linkage pulley assembly; S2. At this time, the two rotating double-headed screws 49 make the driving rods 48 at both ends move horizontally close to each other, thereby driving the connecting slider 46 on the lower surface of the clamping block 44 to move horizontally on the outer surface of the guide rail 45, thereby completing the clamping and fixing of the left and right sides of the plate-shaped mechanical part 23 by the clamping block 44; S3, after the clamping block 44 completes the clamping, the hydraulic rod of the lifting hydraulic machine 75 drives the pressing plate 76 to move downward, so that the buffer pressure pad 77 can be pressed on the upper surface of the plate-like mechanical part 23 after the buffer telescopic rod 78 is extended and retracted, thereby fixing its position. At the same time, the position of the part is fixed by the clamping of the clamping block 44, and then the welding robot arm at the corresponding position welds the corresponding side of the plate-like mechanical part 23; S4. After the welding of one side of the four plate-like mechanical parts 23 is completed, the four plate-like mechanical parts 23 are adjusted for rotation, and the welding of the other side surfaces is completed synchronously. Therefore, during the rotation adjustment, the jacking hydraulic press 75 controls the buffer pressure pad 77 to disengage the pressure contact on the parts, and then the cam divider 1 controls the support base plate 3 to rotate intermittently, the fixed gear 59 remains stationary, and the multiple rotating shafts 60 rotate circumferentially with the support base plate 3, so that the adjusting gear 61 meshing with the fixed gear 59 rotates, and the support shaft 41 is controlled to rotate 90° through the transmission pulley assembly 62, and then the clamped plate-like mechanical parts 23 are rotated 90°, so that the side of the plate-like mechanical parts 23 is in the corresponding welding position; S5. After the plate-like mechanical part 23 is shifted, the hydraulic rod of the lifting hydraulic press 75 drives the pressing plate 76 to move downward, so that the buffer pad 77 and the positioning block 73 clamp the upper and lower surfaces of the plate-like mechanical part 23 together. At this time, the clamping block 44 is released from the clamping of the part, and the driving motor 57 drives the clamping bottom plate 43 to rotate 90° and then re-clamp the left and right sides of the shifted plate-like mechanical part 23. S6, then the welding robot arm at the corresponding position performs welding, and during welding, the exhaust fan 81 is activated, so that the absorption elbow 84 facing the welding robot arm absorbs the generated spark splashes, so that the high-temperature gas is filtered through the filter bag 83 to avoid polluting the environment. At the same time, when the high-temperature gas flows inside the heat recovery box 82, it interacts with the temperature difference power generation sheet 85 to generate electricity, and the electricity is converted from direct current to alternating current through the inverter 87 and then transmitted to the battery pack 86 for storage and utilization; S7. When the plate-shaped mechanical part 23 with four sides welded is taken away by another material taking robot 22, a new plate-shaped mechanical part 23 is put on at the same time, thereby completing the assembly line operation.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical part design welding device, comprising a cam divider (1) and a support platform (2) arranged around the cam divider (1), and also comprising a plate-shaped mechanical part (23) to be processed, characterized in that: The upper surface of the support platform (2) is fixedly connected to a welding manipulator (21) and a material taking manipulator (22); the upper surface of the intermittent turntable of the cam divider (1) is fixedly connected to a support base plate (3) via a connecting rod; the upper surface of the support base plate (3) is provided with a transfer mechanism (4); the upper surface of the fixed shaft of the cam divider (1) is provided with a material pressing mechanism (7); and the outer surface of the material pressing mechanism (7) is provided with a waste heat absorption mechanism (8); The transfer mechanism (4) clamps and fixes the plate-shaped mechanical part (23) to be processed, and adjusts its welding position; Wherein, the material pressing mechanism (7) performs material pressing and positioning on the plate-shaped mechanical part (23) being welded; The waste heat absorption mechanism (8) absorbs and utilizes the spatter and high-temperature gas generated during welding.

2. A mechanical parts design welding device according to claim 1, characterized in that: The indexing mechanism (4) comprises a support shaft (41) rotatably connected to the upper surface of the support base plate (3) via a bearing and distributed in a circular array, the upper surface of the support shaft (41) is fixedly connected to a driving base block (42), and the upper surface of the driving base block (42) is rotatably connected to a clamping base plate (43).

3. A mechanical parts design welding device according to claim 2, characterized in that: The transfer mechanism (4) further comprises a convex clamping block (44) slidably connected to the upper surface of the clamping base plate (43), one side surface of the clamping block (44) being in sliding contact with one side surface of the plate-like mechanical part (23), the upper surface of the clamping base plate (43) being symmetrically provided with mounting grooves, the inner bottom wall of the mounting groove being fixedly connected to a guide rail (45), and the lower surface of the clamping block (44) being fixedly connected to a connecting slider (46).

4. A mechanical parts design welding device according to claim 3, characterized in that: The transfer mechanism (4) further comprises movable grooves (47) symmetrically distributed and penetrating the upper surface of the clamping base plate (43); a driving rod (48) is fixedly connected to the lower surface of the clamping block (44); an outer surface of the driving rod (48) is slidably connected to an inner wall of the movable groove (47); a double-headed screw (49) is rotatably connected to the inner wall of the bottom end of the movable groove (47) via a bearing; and a lower end of the driving rod (48) is threadedly sleeved on the outer surface of the corresponding end of the double-headed screw (49).

5. A mechanical parts design welding device according to claim 4, characterized in that: A linkage cavity (50) is provided inside the clamping base plate (43); a driving gear (51) is fixedly sleeved on the middle outer surface of the double-headed screw (49); a driving screw (52) is rotatably connected to the inner wall of the linkage cavity (50) via a bearing; the driving screw (52) meshes with the driving gear (51); a driven gear (53) is fixedly sleeved on the outer surface of the lower end of the driving screw (52); a rotating motor (54) is fixedly installed on the inner top wall of the linkage cavity (50); a driving gear (55) is fixedly connected to the outer surface of the output shaft of the rotating motor (54) via a coupling; the driven gear (53) meshes with the driving gear (55); The middle outer surfaces of the two double-headed screw rods (49) are symmetrically distributed and transmission-connected with a linkage belt assembly (56); a connecting cavity is provided inside the clamping base plate (43), and the two ends of the connecting cavity are fixedly connected to the inside of the movable grooves (47) on both sides; a driving motor (57) is fixedly installed inside the driving base block (42), and the outer surface of the output shaft of the driving motor (57) is fixedly connected to the lower surface of the clamping base plate (43).

6. A mechanical parts design welding device according to claim 5, characterized in that: The indexing mechanism (4) further comprises a support column (58) fixedly connected to the upper surface of the fixed shaft of the cam divider (1); a fixed gear (59) is fixedly sleeved on the outer surface of the support column (58); the upper surface of the support base plate (3) is rotatably connected to rotating shafts (60) in a ring array through bearings; an adjusting gear (61) is fixedly sleeved on the outer surface of the upper end of the rotating shaft (60); a plurality of adjusting gears (61) are meshed with the fixed gear (59); and a transmission pulley assembly (62) is transmission-connected between the outer surface of the support shaft (41) and the outer surface of the corresponding rotating shaft (60).

7. A mechanical parts design welding device according to claim 6, characterized in that: The upper surface of the support base plate (3) is fixedly connected to a limiting guide wheel (63), and the outer surface of the limiting guide wheel (63) is in sliding contact with the outer surface of the transmission belt of the transmission pulley assembly (62). The upper surface of the support base plate (3) is also fixedly connected to a grease wheel (64), and the outer surface of the grease wheel (64) is in sliding contact with the inner surface of the transmission belt of the transmission pulley assembly (62).

8. A mechanical parts design welding device according to claim 7, characterized in that: The material pressing mechanism (7) comprises a rotation groove (71) provided on the upper surface of the clamping bottom plate (43); the inner wall of the rotation groove (71) is fixedly connected to a limit ring (72); the outer surface of the limit ring (72) is rotatably clamped with a positioning block (73); the upper surface of the positioning block (73) is in sliding contact with the lower surface of the clamping bottom plate (43); The upper surface of the fixed shaft of the cam divider (1) is fixedly connected to a limit plate (74), the lower surface of the limit plate (74) is in sliding contact with the upper surface of the clamping base plate (43), the upper surface of the limit plate (74) is fixedly connected to a lifting hydraulic press (75), the upper surface of the hydraulic rod of the lifting hydraulic press (75) is fixedly connected to a cross-shaped pressing plate (76), the upper surface of the plate-shaped mechanical part (23) is in sliding contact with a buffer pressure pad (77), and the upper surface of the buffer pressure pad (77) is fixedly connected to a buffer telescopic rod (78) with a buffer spring.

9. A mechanical parts design welding device according to claim 8, characterized in that: The waste heat absorption mechanism (8) comprises an exhaust fan (81) fixedly connected to the lower surface of the pressing plate (76) via a connecting column, the lower surface of the exhaust fan (81) is fixedly connected to a heat recovery box (82), the upper surface of the buffer telescopic rod (78) is fixedly connected to the inner top surface of the heat recovery box (82), the inner surface of the heat recovery box (82) is fixedly connected to a filter bag (83), and one side surface of the heat recovery box (82) is fixedly connected to an absorption elbow (84), and one end of the absorption elbow (84) is fixedly connected to the inside of the filter bag (83); The outer surface of the heat recovery box (82) is fixedly connected to a temperature difference power generation sheet (85), the upper surface of the pressing plate (76) is fixedly connected to a battery pack (86), and the lower surface of one end of the pressing plate (76) is fixedly connected to an inverter (87), the inverter (87) is electrically connected to a plurality of groups of the temperature difference power generation sheets (85), and the inverter (87) is electrically connected to the battery pack (86).

10. A welding method applied to the mechanical parts design welding device according to claim 9, characterized in that: The steps include: S1. After one of the material-retrieving manipulators (22) places the plate-shaped mechanical part (23) to be processed on the upper surface of the positioning block (73), the rotating motor (54) in the linkage cavity (50) realizes the rotation of the driving screw (52) through the meshing of the driving gear (55) and the driven gear (53), and then the rotating driving screw (52) realizes the rotation of the double-headed screw (49) on one side through the meshing with the driving gear (51), and then the double-headed screw (49) on the other side rotates synchronously under the transmission of the linkage pulley assembly; S2. At this time, the two rotating double-headed screws (49) cause the driving rods (48) at both ends thereof to move horizontally closer to each other, thereby driving the connecting slider (46) on the lower surface of the clamping block (44) to move horizontally on the outer surface of the guide rail (45), thereby completing the clamping and fixing of the left and right sides of the plate-shaped mechanical part (23) by the clamping block (44); S3, after the clamping block (44) completes clamping, the hydraulic rod of the lifting hydraulic machine (75) drives the press plate (76) to move downward, so that the buffer pressure pad (77) can be pressed on the upper surface of the plate-like mechanical part (23) after the buffer telescopic rod (78) is extended and retracted, thereby fixing its position. At the same time, the position of the part is fixed by the clamping of the clamping block (44), and then the welding robot arm at the corresponding position welds the corresponding side surface of the plate-like mechanical part (23); S4. After the welding of one side of the four plate-like mechanical parts (23) is completed, the four plate-like mechanical parts (23) are adjusted for rotation and the welding of the other side surfaces is completed synchronously. Therefore, during the rotation adjustment, the lifting hydraulic press (75) controls the buffer pressure pad (77) to disengage the pressure connection of the parts, and then the cam divider (1) controls the support base plate (3) to rotate intermittently, the fixed gear (59) remains stationary, and the multiple rotating shafts (60) rotate circumferentially with the support base plate (3), so that the adjustment gear (61) meshing with the fixed gear (59) rotates, and the support shaft (41) is controlled to rotate 90° through the transmission pulley assembly (62), thereby rotating the clamped plate-like mechanical parts (23) 90°, so that the side of the plate-like mechanical parts (23) is in the corresponding welding position; S5. After the plate-like mechanical part (23) is shifted, the hydraulic rod of the lifting hydraulic press (75) drives the pressing plate (76) to move downward, so that the buffer pressure pad (77) and the positioning block (73) jointly clamp the upper and lower surfaces of the plate-like mechanical part (23). At this time, the clamping block (44) is released from clamping the part, and the driving motor (57) drives the clamping bottom plate (43) to rotate 90 degrees and then re-clamp the left and right sides of the shifted plate-like mechanical part (23); S6, then the welding robot arm at the corresponding position performs welding, and during welding, the exhaust fan (81) is activated so that the absorption elbow (84) facing the welding robot arm absorbs the generated spark splashes, so that the high-temperature gas is filtered through the filter bag (83) to avoid polluting the environment. At the same time, when the high-temperature gas flows inside the heat recovery box (82), it interacts with the temperature difference power generation sheet (85) to generate electricity, and the electricity is converted from direct current to alternating current through the inverter (87) and then transmitted to the storage battery pack (86) for storage and utilization; S7. When the plate-shaped mechanical part (23) whose four sides have been welded is taken away by another material taking robot (22), a new plate-shaped mechanical part (23) is put on at the same time, thereby completing the assembly line operation.

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