Welding workbench

Abstract

The utility model discloses a welding workbench. The welding workbench is characterized by comprising a base (1), the rotary table device (2) is arranged on the base (1); the station units (3) are uniformly distributed around the rotary table device (2) in the circumferential direction; the multi-dimensional driving device (3-1) is mounted on the base (1), and the multi-dimensional driving device (3-1) is configured to drive the workpiece carrying table (3-2) to perform multi-dimensional space displacement or / and posture adjustment; the workpiece carrying table (3-2) is arranged at the output end of the multi-dimensional driving device (3-1); and a welding execution device (4). According to the welding workbench, synchronous machining of multiple workpieces is supported, all-posture adjustment of the workpieces and positioning of the welding gun can be achieved, and the welding efficiency, precision and equipment universality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding equipment technical field, concretely relates to a welding workstation. BACKGROUND

[0002] The traditional welding workstation is single in function, and can only realize simple workpiece fixing and welding operation, and cannot meet the welding demand of complex workpieces in multiple angles and multiple positions. When facing workpieces of different specifications and shapes, the flexibility and universality are poor, and the automation degree is low, resulting in low welding efficiency, unstable welding quality and high labor intensity. The existing mode has the following problems:

[0003] (1) the workpiece posture adjustment freedom is small (only rotation), and it is difficult to meet the welding demand in multiple angles and multiple directions;

[0004] (2) manual intervention adjustment (such as handheld welding gun) is needed in multi-angle and multi-position welding, and the flexibility is insufficient, the labor intensity is large, and it is not safe;

[0005] (3) there is only one welding gun, and only one workpiece can be processed at a time, so the production efficiency is low. INVENTION CONTENTS

[0006] The utility model provides a kind of welding workstation to solve the technical problem that the existing welding workstation is poor in adaptability, insufficient in flexibility and low in automation degree.

[0007] In order to achieve the above purpose, the utility model technical scheme is a kind of welding workstation, characterized by comprising

[0008] A) base;

[0009] B) setting on the base turntable device;

[0010] C) multiple circumferentially uniform distribution workstations around the turntable device, each work station comprises:

[0011] Multi-dimensional driving device mounted on the base, the multi-dimensional driving device is configured to drive workpiece carrier to carry out multi-dimensional space displacement or / and posture adjustment;

[0012] Workpiece carrier is arranged at the output end of the multi-dimensional driving device, and is used to fix the workpiece to be welded;

[0013] D) welding execution device, the welding execution device comprises:

[0014] Vertical column is vertically arranged on the turntable device;

[0015] Multiple execution arms are circumferentially distributed along the height direction of the column, and welding gun is installed at the end of each execution arm.

[0016] Further, the rotary table device comprises a first motor, a worm gear reducer and a rotary disc.

[0017] The output shaft of the first motor is connected with the input end of the worm gear reducer, and the output end of the worm gear reducer drives the rotary disc to rotate; the lower end of the column is fixedly connected with the central shaft of the rotary disc.

[0018] Further, the multi-dimensional driving device comprises an XYZ axis displacement mechanism, a turnover mechanism and a rotary mechanism connected in sequence; the workpiece platform is installed on the output end of the rotary mechanism.

[0019] Further, the XYZ axis displacement mechanism comprises an X axis linear module fixed on the base, a Z axis linear module slidingly connected on the X axis linear module, and a Y axis linear module slidingly connected on the Z axis linear module; wherein the turnover mechanism is fixed on the sliding end of the Y axis linear module, and the rotary mechanism is installed on the output end of the turnover mechanism.

[0020] Further, the X axis linear module, the Z axis linear module and the Y axis linear module are all synchronous belt driven linear modules, and the repeat positioning accuracy of each module is ≤0.1mm.

[0021] Further, the turnover mechanism comprises a U-shaped frame fixed on the output end of the XYZ axis displacement mechanism, a turnover plate hingedly connected on both sides of the U-shaped frame through a rotating shaft, and a second motor driving the turnover plate to rotate around the rotating shaft.

[0022] Further, the rotary mechanism comprises a third motor fixedly installed on the turnover plate, and a speed reduction transmission assembly connecting the output shaft of the third motor with the workpiece platform.

[0023] Further, a seat ring slidable along the axial direction of the column is sleeved on the column, the seat ring is fixed at a preset height through radially arranged abutting screws, the outer periphery of the seat ring is provided with a plurality of circumferentially distributed supporting lugs, one end of each supporting lug is connected with the execution arm, and the other end of the execution arm is provided with a clamping sleeve for clamping the welding gun.

[0024] Further, the end of the supporting lug is provided with a first hinge hole and a bolt hole; one end of the execution arm is provided with a second hinge hole corresponding to the first hinge hole, and a plurality of index holes are circumferentially distributed around the second hinge hole; the hinge pin is hinged through the first hinge hole of the supporting lug and the second hinge hole of the execution arm, and the fixed bolt is screwed between the bolt hole and the corresponding one of the index holes to realize angle locking.

[0025] Further, the work station unit has four, and the execution arm has four.

[0026] The utility model discloses the beneficial effect has:

[0027] First, the utility model supports the welding workbench of multiple workpieces synchronous processing, can realize workpiece full gesture adjustment and welding gun positioning, to promote the welding efficiency, precision and equipment versatility;

[0028] Second, the utility model can realize the optimization of space utilization, and the annular multiple station layout makes the equipment area reduction 40% (compared with traditional linear arrangement station);

[0029] Third, the utility model turntable device can prevent the accidental deviation of the turntable through the self-locking characteristic of worm wheel and worm, improve the stability and reliability of the turntable when rotating;

[0030] Fourth, the utility model each station unit can be automatically adjusted to the multidimensional space displacement or / and gesture adjustment of the workpiece on the workpiece platform by the multidimensional drive device of each station unit, can cooperate different welding guns, realizes complex welding work such as multiple gestures, multiple dimensions, multiple angles, multiple parts, multiple directions, makes the welding workbench can be reasonably matched and flexibly adjusted according to different workpiece characteristics, more beneficial to complete the complex welding process of automation, can promote the welding efficiency, precision and equipment versatility. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the front view of a welding workbench in the utility model.

[0032] Figure 2 It is the plan view of a welding workbench in the utility model.

[0033] Figure 3 It is the perspective view of a welding workbench in the utility model

[0034] Figure 4 It is the perspective view of the assembly relationship of turntable device and stand.

[0035] Figures 5-6 It is the structure schematic view of station unit.

[0036] Figure 7 It is the perspective view of the assembly relationship between turnover mechanism and rotation mechanism.

[0037] Figures 8-10 It is the structure schematic view of welding execution device (not including stand). DETAILED DESCRIPTION

[0038] The utility model will be further described in connection with the drawings and examples:

[0039] Example one: a kind of welding workbench, it includes:

[0040] A) a base 1 for fixing on a workbench or rack.

[0041] B) a rotary table device 2 mounted on the base 1;

[0042] C) a plurality of station units 3 mounted on the base 1 and evenly distributed circumferentially around the rotary table device 2;

[0043] Each of the station units 3 comprises a multi-dimensional driving device 3-1 mounted on the base 1 and a workpiece carrier 3-2 arranged at the output end of the multi-dimensional driving device 3-1;

[0044] The multi-dimensional driving device 3-1 is configured to drive the workpiece carrier 3-2 to perform multi-dimensional spatial displacement or / and attitude adjustment;

[0045] The workpiece carrier 3-2 is used to fix the workpiece to be welded; and the workpiece carrier 3-2 is provided with an array of holes for facilitating the fixation of the workpiece to be welded or the fixation of a welding tool.

[0046] D) a welding execution device 4 comprising a column 4-1 vertically arranged on the rotary table device 2 and a plurality of execution arms 4-2 circumferentially distributed along the height direction of the column 4-1, each of which is provided with a welding gun 4-3 at the end thereof.

[0047] In the embodiment, the station units 3 are four in number and the execution arms 4-2 are four in number. It should be noted that the number of the station units 3 and the execution arms 4-2 is not limited to four in the embodiment.

[0048] The working principle of the embodiment can be divided into the following steps:

[0049] Step 1: Station adjustment

[0050] The multi-dimensional driving device 3-1 of each station unit 3 automatically adjusts the workpiece on the workpiece carrier 3-2 to the three-dimensional coordinates and attitude (such as three-dimensional coordinates, inclination angle and direction, etc.) at which the current target welding is located;

[0051] Step 2: Welding gun positioning

[0052] Each execution arm 4-2 precisely aligns its welding gun 4-3 to the weld joint through height adjustment, and each execution arm 4-2 can be at the same height or different heights;

[0053] Step 3: Cooperative work

[0054] The rotary table device 2 drives the welding guns of the execution arms 4-2 on the column 4-1 to rotate to the target station.

[0055] Specifically, in the present embodiment, through the corresponding layout of the work station unit 3 and the execution arm 4-2 and the welding gun 4-3, the following production mode flexible switching can be realized, the multi-mode collaborative welding capability can be realized, and the following characteristics are possessed:

[0056] (1) One-to-one mode: four welding guns 4-3 simultaneously weld the same parts of four workpieces in four work stations respectively, one-to-one correspondence, and four workpieces are processed simultaneously, which can improve the production efficiency by 4 times compared with the traditional processing of only one workpiece.

[0057] (2) Multi-to-multi mode: four welding guns respectively process four different welds of four workpieces in four work stations (such as multi-position spot welding of frames or racks), and the automatic sequential switching of the working positions of the four welding guns is completed through the turntable device 2 (four rotations can be made, and each rotation is 90°), then the four welding guns respectively complete the welding of four different parts on each workpiece in the work station, and the comprehensive utilization rate of the equipment reaches 95%.

[0058] (3) Space utilization optimization, and the annular multi-work station layout reduces the equipment area by 40% (compared with the traditional linear arrangement of work stations).

[0059] (4) Each work station unit can automatically adjust the workpiece on the workpiece carrier to the multi-dimensional space displacement or / and the attitude adjustment of the current target welding through the respective multi-dimensional driving device, which can cooperate with different welding guns to realize complex welding work of multi-attitude, multi-dimension, multi-angle, multi-part, multi-direction, etc., so that the welding worktable can be reasonably matched and flexibly adjusted according to the characteristics of different workpieces, which is more conducive to the automatic completion of complex welding processes, and can improve the welding efficiency, precision and equipment versatility.

[0060] Embodiment two: the present embodiment is further improved on the basis of embodiment one:

[0061] Please refer to Figure 4 , further, the turntable device 2 comprises a first motor 2-1, a worm gear reducer 2-2 and a rotating disc 2-3; the output shaft of the first motor 2-1 is connected with the input end of the worm gear reducer 2-2, the output end of the worm gear reducer 2-2 drives the rotating disc 2-3 to rotate; the lower end of the column 4-1 is fixedly connected with the central shaft of the rotating disc 2-3 coaxially.

[0062] Specifically, the first motor 2-1 is a servo motor, the transmission ratio of the worm gear reducer 2-2 is 1:80, and the rotating disc 2-3 is steplessly adjusted at a speed of 0.1-5 r / min by cooperating with the servo motor, and the angle positioning accuracy is ≤0.05°.

[0063] Specifically, the column 4-1 is coaxially installed with the rotating disc 2-3, the eccentric error is eliminated, and the deviation between the welding gun 4-3 and the work station center is ≤0.1 mm.

[0064] In operation, the first motor 2-1 drives the rotating disc 2-3 to rotate through the worm gear reducer 2-2. In turn, the corresponding positional relationship between each execution arm 4-2 on the column 4-1 and each station unit 3 is accurately controlled during welding, and automatic rotation switching is achieved. The self-locking characteristic of the worm gear can prevent the rotating disc 2-3 from deviating accidentally, thereby improving the stability and reliability of the rotating disc 2-3 during rotation.

[0065] Embodiment Three: This embodiment is further improved on the basis of Embodiment One or Two:

[0066] Referring to Figures 5-6 In this embodiment, the multi-dimensional driving device 3-1 includes an XYZ-axis displacement mechanism 3-11, a turnover mechanism 3-12, and a rotating mechanism 3-13 connected in sequence; and the workpiece carrier 3-2 is installed on the output end of the rotating mechanism 3-13.

[0067] Referring to Figures 5-6 In this embodiment, the XYZ-axis displacement mechanism 3-11 includes an X-axis linear module 3-111 fixed on the base 1, a Z-axis linear module 3-112 slidingly connected to the X-axis linear module 3-111, and a Y-axis linear module 3-113 slidingly connected to the Z-axis linear module 3-112. The XYZ-axis displacement mechanism 3-11 is used to drive the workpiece carrier 3-2 to displace along the X-axis, Y-axis, and Z-axis, thereby achieving the coordinated cooperation between the three-dimensional coordinate change of the workpiece on each station unit 3 and the welding gun during welding, so as to realize the welding of different parts.

[0068] Referring to Figures 5-6 The turnover mechanism 3-12 is fixed to the sliding end of the Y-axis linear module 3-113, and the rotating mechanism 3-13 is installed on the output end of the turnover mechanism 3-12. The turnover mechanism 3-12 is used to drive the workpiece carrier 3-2 to turn over, thereby achieving the coordinated cooperation between the inclination angle change of the workpiece on each station unit 3 and the welding gun during welding, so as to realize the welding of different angles or directions. The rotating mechanism 3-13 is used to drive the workpiece carrier 3-2 to rotate, thereby achieving the coordinated cooperation between the circumferential direction of the workpiece on each station unit 3 and the welding gun during welding, so as to realize the welding of different parts in the circumferential direction of the workpiece.

[0069] Referring to Figures 5-6 Further, the X-axis linear module 3-111, the Z-axis linear module 3-112, and the Y-axis linear module 3-113 are all synchronous belt driven linear modules, and the repeatability of each module is ≤0.1 mm.

[0070] Referring to Figures 5-6Specifically, the X / Y / Z axis linear module (3-111, 3-113, 3-112) is driven by a synchronous belt, the speed is adjustable between 0.1-1m / s, and the repeat positioning accuracy is ±0.05mm.

[0071] Referring to Figure 7 In this embodiment, the overturning mechanism 3-12 comprises: a U-shaped frame 3-122 fixed to the output end of the XYZ axis displacement mechanism 3-11; an overturning plate 3-123 hinged to both sides of the U-shaped frame 3-122 through a rotating shaft; and a second motor 3-121 driving the overturning plate 3-123 to rotate around the rotating shaft.

[0072] Referring to Figure 7 In this embodiment, the rotary mechanism 3-13 comprises: a third motor 3-131 fixedly installed on the overturning plate 3-123; and a speed reduction transmission assembly 3-132 connected between the output shaft of the third motor 3-131 and the workpiece carrier 3-2.

[0073] In this embodiment, the speed reduction transmission assembly 3-132 can adopt a synchronous belt speed reduction assembly. The transmission ratio of the synchronous belt speed reduction assembly is 1:100.

[0074] Embodiment Four: This embodiment is further improved on the basis of Embodiment One or Two or Three:

[0075] Referring to Figure 1 In this embodiment, a seat ring 4-4 that can slide along the axial direction of the column 4-1 is sleeved on the column 4-1, and the seat ring 4-4 is fixed to the column 4-1 at a preset height through radially arranged abutting screws 4-5.

[0076] Referring to Figures 8-10 In addition, the outer periphery of the seat ring 4-4 is provided with a plurality of circumferentially distributed lugs 4-41, each of which is connected to one end of the execution arm 4-2, and the other end of the execution arm 4-2 is provided with a clamp sleeve 4-21 for clamping the welding gun 4-3.

[0077] Referring to Figures 8-10 Preferably, the sliding range of the seat ring 4-4 along the column 4-1 is 0-2m, and the abutting screws 4-5 are used to lock the sliding range.

[0078] Referring to Figures 8-10 Further, the clamp sleeve 4-21 is provided with a rubber damping layer to reduce the transmission of welding vibration (amplitude attenuation≥60%).

[0079] Referring to Figures 8-10In the embodiment, the end of the lug 4-41 is provided with a first hinge hole 4-42 and a bolt hole 4-43; one end of the execution arm 4-2 is provided with a second hinge hole 4-23 corresponding to the first hinge hole 4-42, and a plurality of index holes 4-22 are uniformly distributed around the second hinge hole 4-23; the hinge pin 4-6 passing between the first hinge hole 4-42 of the lug 4-41 and the second hinge hole 4-23 of the execution arm 4-2 is hinged, and the angle is locked by rotating and fixing the bolt 4-7 between the bolt hole 4-43 and the corresponding one of the index holes 4-22.

[0080] Referring to Figures 8-10 Specifically, the execution arm 4-2 is continuously rotated by 0-360° through the hinge pin 4-6;

[0081] Referring to Figures 8-10 In the embodiment, the index holes 4-22 are uniformly distributed at intervals of 20°, providing discrete angle locking to achieve adjustment of the welding gun 4-3 at different angles on the execution arm 4-2. Since each execution arm 4-2 can be independently adjusted, the angles of work between the welding guns can be different.

[0082] In other embodiments, the index holes 4-22 can be uniformly distributed at intervals of 5° or 10° or other parameters according to actual use needs (the more dense, the greater the angle adjustment accuracy).

[0083] The above describes the preferred embodiments of the present application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A welding station characterized by: The base (1) is provided with a rotary table device (2); A plurality of work station units (3) are evenly distributed circumferentially around the rotary table device (2), each of which comprises: A multi-dimensional driving device (3-1) mounted on the base (1), which is configured to drive the workpiece carrier (3-2) to move in multiple dimensions or / and adjust the attitude; A workpiece carrier (3-2) provided at the output end of the multi-dimensional driving device (3-1), which is used to fix the workpiece to be welded; A welding execution device (4) comprising: A vertical column (4-1) vertically arranged on the rotary table device (2); A plurality of execution arms (4-2) circumferentially distributed along the height direction of the column (4-1), and a welding gun (4-3) is mounted at the end of each execution arm (4-2). The rotary table device (2) comprises a first motor (2-1), a worm gear reducer (2-2) and a rotary disc (2-3); The output shaft of the first motor (2-1) is connected with the input end of the worm gear reducer (2-2), and the output end of the worm gear reducer (2-2) drives the rotary disc (2-3) to rotate; the lower end of the column (4-1) is fixedly connected with the central shaft of the rotary disc (2-3).

2. A welding station as claimed in claim 1, characterized in that: The multi-dimensional driving device (3-1) comprises an XYZ axis displacement mechanism (3-11), a turnover mechanism (3-12) and a rotary mechanism (3-13) connected in sequence; the workpiece carrier (3-2) is mounted at the output end of the rotary mechanism (3-13). The XYZ axis displacement mechanism (3-11) comprises:

3. A welding station as claimed in claim 1, characterized in that: An X-axis linear module (3-111) fixed on the base (1); 4. A welding station as claimed in claim 3, characterised in that: A Z-axis linear module (3-112) slidingly connected to the X-axis linear module (3-111); A Y-axis linear module (3-113) slidingly connected to the Z-axis linear module (3-112); The turnover mechanism (3-12) is fixed to the sliding end of the Y-axis linear module (3-113), and the rotary mechanism (3-13) is mounted at the output end of the turnover mechanism (3-12). The X-axis linear module (3-111), the Z-axis linear module (3-112) and the Y-axis linear module (3-113) are all synchronous belt driven linear modules. The turnover mechanism (3-12) comprises:

5. A welding station as claimed in claim 4, characterised in that: A U-shaped frame (3-122) fixed to the output end of the XYZ axis displacement mechanism (3-11); 6. A welding station as claimed in claim 3, characterised in that: A turnover plate (3-123) hinged to both sides of the U-shaped frame (3-122) through a rotating shaft; A second motor (3-121) driving the turnover plate (3-123) to rotate around the rotating shaft. The rotary mechanism (3-13) comprises: A third motor (3-131) fixedly mounted on the turnover plate (3-123); 7. A welding station as claimed in claim 6, characterised in that: A speed reduction transmission assembly (3-132) connecting the output shaft of the third motor (3-131) with the workpiece carrier (3-2).

8. The welding workbench of claim 1, wherein: ​ ​ The stand column (4-1) is sleeved with a seat ring (4-4) which can slide along the axial direction, the seat ring (4-4) is fixed at a preset height by a radially arranged abutting screw (4-5); the outer periphery of the seat ring (4-4) is provided with a plurality of circumferentially distributed lugs (4-41), each lug (4-41) is connected with one end of the execution arm (4-2), the other end of the execution arm (4-2) is provided with a clamping sleeve (4-21) for clamping the welding gun (4-3).

9. A welding station as claimed in claim 8, characterised in that: The end of the lug (4-41) is provided with a first hinge hole (4-42) and a bolt hole (4-43); One end of the execution arm (4-2) is provided with a second hinge hole (4-23) corresponding to the first hinge hole (4-42), and a plurality of index holes (4-22) are circumferentially distributed around the second hinge hole (4-23); The hinge pin (4-6) passing between the first hinge hole (4-42) of the lug (4-41) and the second hinge hole (4-23) of the execution arm (4-2) is hinged, and the fixed bolt (4-7) is screwed between the bolt hole (4-43) and the corresponding one of the index holes (4-22) to realize angle locking.

10. A welding station as claimed in claim 1, characterized in that: The work station unit (3) has four, and the execution arm (4-2) has four.

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