Automatic welding positioner
By combining manual and automated chuck tightening mechanisms, the problems of large positioning errors and insufficient versatility of traditional welding positioners are solved, enabling high-precision coaxial adjustment of workpieces and adaptation to multiple specifications, thereby improving welding efficiency and accuracy.
Patent Information
- Application Number
- CN202423238114.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional welding positioners have large errors in positioning and clamping workpieces, resulting in poor motion stability, affecting processing accuracy, and lacking versatility and adaptability. In particular, it is difficult to ensure coaxiality when fixing long workpieces in a cantilever manner, which affects welding accuracy and efficiency.
It adopts a combination of manual and automatic chuck tightening mechanisms, and is equipped with a bracket mechanism with multiple degrees of freedom in multiple directions to realize the automatic positioning and coaxial adjustment of workpieces, adapting to various specifications of workpieces. The chuck tightening mechanism realizes the automatic clamping and lifting of workpieces to ensure welding coaxiality.
It achieves high-precision, automated positioning and multi-specification adaptability of workpieces, improves welding accuracy and efficiency, reduces manual intervention, and is suitable for widespread application in automatic welding positioners.
Smart Images
Figure CN223670565U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to automatic welding field especially a kind of automatic welding positioner. BACKGROUND
[0002] In welding production line, in order to adapt to complex welding demand, welding positioner is often needed to be used, welding positioner can drive workpiece to realize movement in space, to cooperate with welding robot action, realize more complex welding operation.
[0003] Traditional welding positioner is often positioned by artificial, clamped by artificial when carrying out the position operation of cylindrical workpiece, the positioning error of this mode is relatively large, leading to poor movement stability after operation, which will directly affect machining precision.
[0004] In order to solve the above problems, some manufacturers will directly use chuck driven by oil pressure or air pressure to realize the clamping and positioning of workpiece, but the adjustable range of this automatic chuck is relatively small, only a few specifications of workpiece can be clamped and positioned, and the versatility is poor.
[0005] At the same time, since almost all positioners adopt two-end clamping fixed mode when clamping cylindrical or cylindrical workpiece, this mode belongs to cantilever type fixing, so when the axial diameter ratio of workpiece is relatively large (i.e. workpiece is relatively long), the free end of workpiece will naturally droop, and it is difficult to align two sections of workpiece together according to accuracy requirement, thereby affecting work efficiency, and even affecting final welding accuracy.
[0006] Therefore, a method or device is needed to solve the above problems. SUMMARY
[0007] The utility model discloses in order to solve the above insufficient of prior art, propose a kind of simple structure, design is ingenious, layout is reasonable, it can be positioned to workpiece conveniently, quickly, and can guarantee the automatic welding positioner of positioning accuracy.
[0008] The technical solution of the utility model is: an automatic welding positioner, including base 1, characterized by: the base 1 is provided with rotary table support frame 2, rotary table support frame 2 is rotationally supported with rotary table 3, rotary table motor 4 is supported on rotary table support frame 2, the output end of rotary table motor 4 is connected with rotary table gear, rotary table gear is engaged with the gear ring arranged on the outer side of rotary table,
[0009] The rotary table 3 is fixedly connected with the middle part of positioner frame 5, the main rack 6 and a pair of main slide rails 7 are arranged on the positioner frame 5, and the main rack 6 and the main slide rails 7 are distributed along the length direction of the positioner frame 5,
[0010] One end of the variable position frame 5 is provided with a fixed chuck mechanism 8, while the variable position frame 5 is also provided with an adjustable chuck mechanism 9, and two workpiece bracket mechanisms 10 are movably connected to the variable position frame 5 between the fixed chuck mechanism 8 and the adjustable chuck mechanism 9,
[0011] The fixed chuck mechanism 8 comprises a fixed chuck seat 11 fixedly connected to the variable position frame 5, a first manual chuck 12 rotatably connected to the fixed chuck seat 11, a chuck driving motor 13 provided on the fixed chuck seat 11, the chuck driving motor 13 connected to the first manual chuck 12 through a gear ring transmission pair, and a chuck tightening mechanism 14 matched with the first manual chuck 12 provided on the fixed chuck seat 11,
[0012] The adjustable chuck mechanism 9 comprises an adjustable sliding table 15 slidably connected to the main slide rail 7 through a sliding block, an adjustment motor 16 provided on the adjustable sliding table 15, a chuck gear 17 provided on the working end of the adjustment motor 16, the chuck gear 17 meshing with the main rack 6, a secondary slide rail 18 provided on the adjustable sliding table 15, an adjustable chuck seat 19 slidably connected to the secondary slide rail 18, a second manual chuck 20 rotatably supported on the adjustable chuck seat 19, a first air cylinder 21 provided on the adjustable sliding table 15, the working end of the first air cylinder 21 connected to the side of the adjustable chuck seat 19 away from the fixed chuck mechanism 8, a second air cylinder 22 provided on the top of the adjustable chuck seat 19, a positioning pin 23 provided on the working end of the second air cylinder 22, a pin hole matched with the positioning pin 23 provided on the back side of the second manual chuck 20, and a chuck tightening mechanism 14 matched with the second manual chuck 20 provided on the adjustable sliding table 15,
[0013] The workpiece bracket mechanism 10 comprises a bracket connecting plate 24 slidably connected to the main slide rail 7 through a sliding block, a bracket walking motor 25 provided on the top of the bracket connecting plate 24, a bracket gear 26 provided on the working end of the bracket walking motor 25, the bracket gear 26 meshing with the main rack 6, a bracket slide rail 27 provided on the bracket connecting plate 24, the bracket slide rail 27 perpendicular to the main slide rail 7, a bracket 28 slidably connected to the bracket slide rail 27, a pair of supporting rollers 29 rotatably supported on the bracket 28, a lifting motor 30 provided at the bottom end of the bracket connecting plate 24, the output end of the lifting motor 30 connected to a lead screw 31 rotatably supported on the bracket connecting plate 24 through a bevel gear transmission pair, and a nut seat connected to the lead screw 31 provided on the bracket 28,
[0014] The chuck tightening mechanism 14 comprises a tightening mechanism support frame 32 fixedly connected with the fixed chuck seat 11 or the adjustable sliding table 15, a tightening gun cylinder 33 is arranged on the tightening mechanism support frame 32, the working end of the tightening gun cylinder 33 is connected with a tightening gun sliding frame 34, the tightening gun sliding frame 34 is slidably connected on the tightening mechanism support frame 32 through a sliding rail sliding block mechanism, and a tightening gun 35 is arranged on the tightening gun sliding frame 34; the working end of the tightening gun 35 is matched with the chuck tightening port on the first manual chuck 12 or the second manual chuck 20.
[0015] Compared with the prior art, the automatic welding positioner has the following advantages:
[0016] The automatic welding positioner has the following advantages:
[0017] Meanwhile, two sets of bracket mechanisms with multiple degrees of freedom are arranged, the bracket can lift the cantilever end of the workpiece, and the two workpieces to be welded are adjusted to the coaxial state, so that the final welding coaxiality is ensured.
[0018] In summary, the automatic welding positioner has multiple advantages, is particularly suitable for popularization and application in the field, and has a very broad market prospect. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment of the utility model (working state one).
[0020] Figure 2 is a schematic diagram of the three-dimensional structure of the embodiment of the utility model (working state two).
[0021] Figure 3 is a schematic diagram of the structure of the base part in the embodiment of the utility model.
[0022] Figure 4 is a schematic diagram of the structure of the positioner frame part in the embodiment of the utility model.
[0023] Figure 5 is a schematic diagram of the structure of the fixed chuck mechanism part in the embodiment of the utility model.
[0024] Figure 6It is the structure schematic view of the adjustable chuck mechanism part (front view) in the embodiment of the utility model.
[0025] Figure 7 It is the structure schematic view of the adjustable chuck mechanism part (rear view) in the embodiment of the utility model.
[0026] Figure 8 It is the sectional view of the adjustable chuck mechanism part in the embodiment of the utility model.
[0027] Figure 9 It is the structure schematic view of the workpiece bracket mechanism part (front view) in the embodiment of the utility model.
[0028] Figure 10 It is the structure schematic view of the workpiece bracket mechanism part (rear view) in the embodiment of the utility model.
[0029] Figure 11 It is the structure schematic view of the chuck tightening mechanism part in the embodiment of the utility model. Specific implementation
[0030] The specific implementation of the utility model will be described below with reference to the drawings. Figures 1 to 11 As shown in the figure: an automatic welding positioner, including a base 1 as foundation, the base 1 is provided with a turntable support frame 2, the turntable support frame 2 is rotatably supported with a turntable 3, the turntable support frame 2 is supported with a turntable motor 4, the output end of the turntable motor 4 is connected with a turntable gear, the turntable gear is engaged with a gear ring arranged on the outer side of the turntable,
[0031] The turntable 3 is fixedly connected with the middle part of the positioner frame 5, the positioner frame 5 is provided with a main rack 6 and a pair of main slide rails 7, and the main rack 6 and the main slide rails 7 are distributed along the length direction of the positioner frame 5,
[0032] One end of the positioner frame 5 is provided with a fixed chuck mechanism 8, and the positioner frame 5 is also provided with an adjustable chuck mechanism 9, and two workpiece bracket mechanisms 10 are movably connected on the positioner frame 5 between the fixed chuck mechanism 8 and the adjustable chuck mechanism 9,
[0033] The fixed chuck mechanism 8 includes a fixed chuck seat 11 fixedly connected on the positioner frame 5, a first manual chuck 12 is rotatably connected on the fixed chuck seat 11, a chuck driving motor 13 is arranged on the fixed chuck seat 11, the chuck driving motor 13 is connected with the first manual chuck 12 through a gear gear ring transmission pair, and a chuck tightening mechanism 14 matched with the first manual chuck 12 is also arranged on the fixed chuck seat 11,
[0034] The adjustable chuck mechanism 9 comprises an adjustable sliding table 15 which is slidably connected with the main sliding rail 7 through a sliding block, an adjusting motor 16 is arranged on the adjustable sliding table 15, a chuck gear 17 is arranged on the working end of the adjusting motor 16, the chuck gear 17 is meshed with the main rack 6, a sub-sliding rail 18 is arranged on the adjustable sliding table 15, an adjustable chuck base 19 is slidably connected with the sub-sliding rail 18, a second manual chuck 20 is rotatably supported on the adjustable chuck base 19, a first air cylinder 21 is further arranged on the adjustable sliding table 15, the working end of the first air cylinder 21 is connected with the side of the adjustable chuck base 19 which is away from the fixed chuck mechanism 8, a second air cylinder 22 is further arranged on the top of the adjustable chuck base 19, a positioning pin 23 is arranged on the working end of the second air cylinder 22, a pin hole is arranged on the back side of the second manual chuck 20 and matched with the positioning pin 23, a chuck tightening mechanism 14 matched with the second manual chuck 20 is further arranged on the adjustable sliding table 15,
[0035] The workpiece bracket mechanism 10 comprises a bracket connecting plate 24 which is slidably connected with the main sliding rail 7 through a sliding block, a bracket walking motor 25 is arranged on the top of the bracket connecting plate 24, a bracket gear 26 is arranged on the working end of the bracket walking motor 25, the bracket gear 26 is meshed with the main rack 6, a bracket sliding rail 27 is arranged on the bracket connecting plate 24, the bracket sliding rail 27 is perpendicular to the main sliding rail 7, a bracket 28 is slidably connected with the bracket sliding rail 27, a pair of supporting rollers 29 are rotatably supported on the bracket 28, a lifting motor 30 is arranged on the bottom end of the bracket connecting plate 24, the output end of the lifting motor 30 is connected with a lead screw 31 rotatably supported on the bracket connecting plate 24 through a bevel gear transmission pair, and a nut seat connected with the lead screw 31 is arranged on the bracket 28,
[0036] The chuck tightening mechanism 14 comprises a tightening mechanism support frame 32 fixedly connected with the fixed chuck base 11 or the adjustable sliding table 15, a tightening gun cylinder 33 is arranged on the tightening mechanism support frame 32, the working end of the tightening gun cylinder 33 is connected with a tightening gun sliding frame 34, the tightening gun sliding frame 34 is slidably connected on the tightening mechanism support frame 32 through a sliding rail sliding block mechanism, a tightening gun 35 is arranged on the tightening gun sliding frame 34, and the working end of the tightening gun 35 is matched with a chuck tightening port on the first manual chuck 12 or the second manual chuck 20.
[0037] The working process of the automatic welding positioner is as follows: firstly, the distance between the fixed chuck mechanism 8 and the adjustable chuck mechanism 9 is ensured to be greater than the total length of the two workpieces (the first workpiece and the second workpiece) which need to be welded, then the end of the first workpiece is clamped on the first manual chuck 12, the end of the second workpiece is clamped on the second manual chuck 20, then the two workpiece bracket mechanisms are adjusted respectively, so that they respectively hold the cantilever ends of the first workpiece and the second workpiece, and the coaxiality of the two workpieces is maintained.
[0038] Then the manipulator can drive the welding gun to weld the joint of the first workpiece and the second workpiece, while the welding gun is welding, the device drives the first workpiece and the second workpiece to rotate along the axis of the device, and also drives the two to turn in space, through the cooperation of the device and the welding gun, the welding operation between the first workpiece and the second workpiece is realized.
[0039] When clamping the first workpiece and the second workpiece, the operator can send a signal to the chuck tightening mechanism 14 through the control system, the tightening gun cylinder 33 in the chuck tightening mechanism 14 works, drives the tightening gun carriage 34 to move relative to the tightening mechanism support frame 32, the tightening gun 35 approaches the first manual chuck 12 (or the second manual chuck 20), the working end of the tightening gun 35 is inserted into the chuck tightening port provided on the manual chuck 20, the tightening gun 35 works (forward or reverse), drives the clamping jaw on the manual chuck to move radially, so as to realize clamping of the workpiece;
[0040] When clamping the first workpiece and the second workpiece on the device, first, according to the length of the two workpieces, the two workpiece carrier mechanisms 10 are respectively driven to move to the appropriate position to support the cantilever end of the workpiece, so as to ensure that the two workpieces can be coaxial, the specific process is that the carrier walking motor 25 works, drives the carrier gear 26 to rotate, because the carrier gear 26 is engaged with the main rack 6, so the carrier connecting plate 24 will move linearly along the length direction of the displacement frame 5; Because the device can clamp workpieces of various specifications, the outer diameters of these workpieces may be different, therefore, when it is necessary to lift workpieces of different outer diameters, a signal can be sent to the lifting motor 30, the lifting motor 30 drives the lead screw 31 to rotate uniformly, so that the carrier 28 connected with the nut seat moves linearly along the carrier sliding rail 27, so as to change the distance between the support rollers 29 and the central axes of the two chuck mechanisms, so as to adapt to the lifting of workpieces of different outer diameters; When the workpiece rotates along its axis, the two support rollers 29 also roll, realizing the lifting of the moving workpiece;
[0041] After the first workpiece and the second workpiece are clamped respectively, the two need to move towards each other, the control system sends a signal to the adjusting motor 16 in the adjustable chuck mechanism 9, the adjusting motor 16 drives the chuck gear 17 to rotate, because the chuck gear 17 is engaged with the main rack 6, so it will drive the adjustable sliding table 15 to move linearly along the length direction of the main rack 6, so as to make the welding surface of the first workpiece contact with the welding surface of the second workpiece;
[0042] During the welding process, the first cylinder 21 keeps pressure, that is, it always exerts a certain pressure on the adjustable chuck base 19, so that when the two workpieces are slightly deformed under the heating of the welding gun, the first cylinder 21 can also push the adjustable chuck base 19 to make a corresponding displacement, thereby making up for the deformation and ensuring the welding effect;
[0043] When the workpieces need to rotate along their own axes, the chuck driving motor 13 is started to directly drive the first manual chuck 12 to rotate, and since the second manual chuck 20 is rotationally supported on the adjustable chuck base 19, the second manual chuck 20 rotates accordingly;
[0044] After the welding work is completed, the variable position frame 5 drives the welded workpieces to return to the horizontal posture, the chuck tightening mechanism 14 in the fixed chuck mechanism 8 and the adjustable chuck mechanism 9 works, so that the first manual chuck 12 and the second manual chuck 20 are not clamping the workpieces, at this time the workpieces are completely supported by the supporting rollers 29 in the two workpiece bracket mechanisms 10, and then the loading and unloading manipulator takes the completed workpieces from the device and transports them to the next station.
Claims
1. An automatic welding positioner comprising a base (1), characterized in that: The base (1) is provided with a turntable support frame (2), the turntable support frame (2) is rotatably supported with a turntable (3), a turntable motor (4) is supported on the turntable support frame (2), the output end of the turntable motor (4) is connected with a turntable gear, the turntable gear is engaged with a gear ring arranged on the outer side of the turntable, The turntable (3) is fixedly connected with the middle part of a displacement frame (5), the displacement frame (5) is provided with a main rack (6) and a pair of main slide rails (7), and the main rack (6) and the main slide rails (7) are distributed along the length direction of the displacement frame (5), One end of the displacement frame (5) is provided with a fixed chuck mechanism (8), and the displacement frame (5) is also provided with an adjustable chuck mechanism (9), and two workpiece bracket mechanisms (10) are movably connected on the displacement frame (5) between the fixed chuck mechanism (8) and the adjustable chuck mechanism (9), The fixed chuck mechanism (8) comprises a fixed chuck seat (11) fixedly connected on the displacement frame (5), a first manual chuck (12) rotatably connected on the fixed chuck seat (11), a chuck driving motor (13) arranged on the fixed chuck seat (11), the chuck driving motor (13) connected with the first manual chuck (12) through a gear and gear ring transmission pair, and a chuck tightening mechanism (14) matched with the first manual chuck (12) arranged on the fixed chuck seat (11), The adjustable chuck mechanism (9) comprises an adjustable sliding table (15) slidably connected with the main slide rails (7) through a sliding block, an adjustment motor (16) arranged on the adjustable sliding table (15), a chuck gear (17) arranged on the working end of the adjustment motor (16), the chuck gear (17) engaged with the main rack (6), a secondary slide rail (18) arranged on the adjustable sliding table (15), an adjustable chuck seat (19) slidably connected on the secondary slide rail (18), a second manual chuck (20) rotatably supported on the adjustable chuck seat (19), a first air cylinder (21) arranged on the adjustable sliding table (15), the working end of the first air cylinder (21) connected with the side of the adjustable chuck seat (19) away from the fixed chuck mechanism (8), a second air cylinder (22) arranged on the top of the adjustable chuck seat (19), a positioning pin (23) arranged on the working end of the second air cylinder (22), a pin hole matched with the positioning pin (23) arranged on the back side of the second manual chuck (20), and a chuck tightening mechanism (14) matched with the second manual chuck (20) arranged on the adjustable sliding table (15), The workpiece carrier mechanism (10) comprises a carrier connecting plate (24) connected with the main slide rail (7) through a sliding block, a carrier walking motor (25) is arranged on the top of the carrier connecting plate (24), a carrier gear (26) is arranged on the working end of the carrier walking motor (25), the carrier gear (26) is engaged with the main rack (6), a carrier slide rail (27) is arranged on the carrier connecting plate (24), the carrier slide rail (27) is perpendicular to the main slide rail (7), a carrier (28) is slidably connected on the carrier slide rail (27), a pair of supporting rollers (29) are rotatably supported on the carrier (28), a lifting motor (30) is arranged at the bottom end of the carrier connecting plate (24), the output end of the lifting motor (30) is connected with a lead screw (31) rotatably supported on the carrier connecting plate (24) through a bevel gear transmission pair, and a nut seat connected with the lead screw (31) is arranged on the carrier (28), The chuck tightening mechanism (14) comprises a tightening mechanism support frame (32) fixedly connected with the fixed chuck seat (11) or the adjustable slide table (15), a tightening gun cylinder (33) is arranged on the tightening mechanism support frame (32), the working end of the tightening gun cylinder (33) is connected with a tightening gun sliding frame (34), the tightening gun sliding frame (34) is slidably connected on the tightening mechanism support frame (32) through a slide rail sliding block mechanism, a tightening gun (35) is arranged on the tightening gun sliding frame (34), and the working end of the tightening gun (35) is matched with a chuck tightening port on the first manual chuck (12) or the second manual chuck (20).