CN116765722B - Lightweight car B post assembly welding frock - Google Patents
Lightweight car B post assembly welding frock Download PDFInfo
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- CN116765722B CN116765722B CN202311068206.3A CN202311068206A CN116765722B CN 116765722 B CN116765722 B CN 116765722B CN 202311068206 A CN202311068206 A CN 202311068206A CN 116765722 B CN116765722 B CN 116765722B
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- 238000003466 welding Methods 0.000 title claims abstract description 90
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000003028 elevating effect Effects 0.000 claims description 4
- 230000007723 transport mechanism Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a lightweight automobile B column assembly welding tool which comprises a workbench, a lifting mechanism, a conveying mechanism and a clamping mechanism, wherein the lifting mechanism comprises a bracket fixed on the workbench and a flat plate fixed on the top end of the bracket; the conveying mechanism comprises a second screw, a motor and a moving unit, the moving unit is in threaded connection with the second screw, and the trigger bar is fixedly arranged on the side wall, close to the welding head, of the moving unit; the clamping mechanism comprises a supporting plate and a clamping plate which are fixedly arranged on the moving unit and used for bearing the B-pillar workpieces to be welded. The invention optimizes the processing technology, improves the production efficiency and reduces the investment of labor cost.
Description
Technical Field
The invention relates to the technical field of welding processing, in particular to a welding tool for a lightweight automobile B column.
Background
In order to achieve comprehensive indexes such as weight reduction, energy saving, emission reduction, safety and the like in the automobile processing process, the concept of a lightweight automobile is provided, so that the size of the automobile is not simply reduced, and meanwhile, the method meets the following requirements: the manufacturing cost is not increased, the automobile performance is not reduced, the safety performance is not reduced, and the like. Therefore, in the manufacturing process of the lightweight automobile, the selection of materials and the optimization of manufacturing process play a vital role.
The B column is a column on the left side and the right side of the car body at the position between the front row seat and the rear row seat of the car, the B column is very important in the car body structure of the car, and the strength and the rigidity of the B column directly determine the anti-collision safety of the car body. The requirement of strength and matching with the appearance of a car body is considered, the shape and the structure of the B column are complex, the B column of the existing lightweight car basically adopts a multi-layer composite structure, reinforcing ribs are also required to be arranged in the B column, and the multi-layer composite structure of the B column can be formed into a whole through multi-point welding. In the existing welding process, the parts to be welded which form the B column are mostly needed to be placed at the corresponding positions one by one manually in the welding process of the B column, then the workpieces are moved, and the welding equipment is used for processing the workpieces step by step.
The following problems exist in this way of processing: firstly, the workpiece is not firmly clamped, the phenomenon of cold joint is easy to occur, meanwhile, the welding is controlled by operators, the working efficiency is lower, and in addition, the workpiece conveying and processing processes are dependent on manpower, so that the processing technology has the defects of low clamping and positioning precision and lower welding efficiency.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a welding tool for a lightweight automobile B column, which comprises a workbench, a lifting mechanism, a conveying mechanism and a clamping mechanism, wherein the lifting mechanism comprises a bracket fixed on the workbench and a flat plate fixedly arranged at the top end of the bracket, one side of the bracket is fixedly provided with a vertical rail, a sliding plate is slidably arranged on the vertical rail, a welding head is arranged on the sliding plate through a fixing clamp, a first screw rod is connected onto the sliding plate in a threaded manner, and the first screw rod upwards penetrates out of the flat plate at the top end of the bracket and is fixedly connected with a first gear; the conveying mechanism comprises a second screw, a motor and a moving unit, the moving unit is in threaded connection with the second screw, and the trigger bar is fixedly arranged on the side wall, close to the welding head, of the moving unit; the clamping mechanism comprises a supporting plate and a clamping plate which are fixedly arranged on the moving unit and used for bearing the B-pillar workpieces to be welded. The invention optimizes the processing technology, improves the production efficiency and reduces the investment of labor cost.
The invention solves the technical problems, and adopts the technical proposal that:
the utility model provides a lightweight car B post assembly welding frock, comprises a workbench, elevating system, transport mechanism and fixture, elevating system includes the support of fixing on the workstation and the dull and stereotyped of fixing on the support top, one side at the support sets firmly vertical track, slidable mounting has the sliding plate on vertical track, install the bonding tool through the fixation clamp on the sliding plate, threaded connection has first screw rod on the sliding plate, first screw rod upwards wear out the dull and stereotyped on support top and fixedly connected with first gear, first screw rod is connected with dull and stereotyped pivot, still rotate on the dull and stereotyped and be provided with first transfer line, the fixed cover is equipped with the second gear with first gear engagement on the first transfer line, the lower extreme of first transfer line runs through the support downwards and fixedly connected with the third gear, the third gear engagement is connected with accelerating gear, accelerating gear fixed mounting is on the second transfer line, the second transfer line is connected with the mounting panel through the bonding tool, the fixed cover is equipped with constant speed gear on the second transfer line, constant speed gear engagement is connected with the rack, rack sliding connection is on the mounting panel, the tail end fixed mounting reset spring has on the mounting plate, install reset spring piece in front end at the piece and the inclined plane of the piece is set up at the inclined plane of the inclined plane that the inclined plane is set up at the inclined plane that triggers the piece and sets up with the inclined plane and triggers the inclined plane and sets up and triggers the inclined plane and triggers and the one side respectively;
the conveying mechanism comprises a second screw, a motor and a moving unit, the moving unit is in threaded connection with the second screw, and the trigger bar is fixedly arranged on the side wall, close to the welding head, of the moving unit; the clamping mechanism comprises a supporting plate and a clamping plate which are fixedly arranged on the moving unit, two displacement grooves are formed in the position, corresponding to the supporting plate and the clamping plate, on the workbench, the two displacement grooves are respectively matched with the supporting plate and the clamping plate, a welding table is fixedly arranged between the two displacement grooves on the workbench, and the welding table is opposite to the welding head.
Preferably, the constant speed gear is meshed with the rack through the trigger gear, the constant speed gear is meshed with the trigger gear, the trigger gear is meshed with the rack, the trigger gear is rotatably sleeved on the connecting shaft, and the connecting shaft is fixedly arranged on the mounting plate; the number of teeth of the accelerating gear is not less than 3 times of the number of teeth of the third gear; the bottom of rack is provided with the T type piece that falls, has seted up T type groove on the mounting panel, and T type piece inlays and locates T type inslot and can slide in T type inslot.
More preferably, one side of the mounting plate is fixedly connected with a side vertical plate, the mounting plate is fixedly arranged on the bottom surface of the workbench through the side vertical plate, one end of the return spring is fixedly connected with the rack, and the other end of the return spring is fixedly connected with the side vertical plate; the tail part of the rack is fixedly provided with a reset rod, one end of the reset rod is penetrated in the reset spring and is fixedly connected with the rack, the other end of the reset rod penetrates out of the side vertical plate and is in sliding connection with the side vertical plate, and the end part of the reset rod penetrating out of the side vertical plate is provided with a reset handle.
Further, the sliding plate is L-shaped and comprises a transverse plate at the top and a vertical plate integrally bent and formed with the transverse plate, a fixing clamp is fixedly arranged on the vertical plate of the sliding plate, and a welding head is fixedly arranged on the fixing clamp; a protruding sliding block is arranged on one side, close to the vertical rail, of the vertical plate of the sliding plate, a sliding groove is correspondingly formed in the vertical rail, the sliding groove is matched with the sliding block, and the sliding block can slide up and down in the sliding groove.
Still further, mobile unit is T font, including the horizontal piece that is located the top and connect the perpendicular piece at horizontal piece downside middle part, threaded connection second screw rod on mobile unit's perpendicular piece, the second screw rod runs through mobile unit's perpendicular piece setting, the both ends of second screw rod are connected with the workstation rotation respectively, at the one end installation motor of workstation corresponding second screw rod, the output shaft of motor and the one end fixed connection of second screw rod.
Preferably, the supporting plate and the clamping plate are fixedly and vertically arranged on the transverse block at the top of the mobile unit, the supporting plate and the clamping plate are parallel and are arranged at intervals, the top end of the supporting plate is also provided with an arc-shaped plate, and the arc-shaped plate is fixedly connected to the outer side wall at the top end of the supporting plate; an edge box is fixedly arranged at one end of the workbench, and a motor is arranged in the edge box; the interval area between the supporting plate and the clamping plate is set as a channel, and the width of the channel is not smaller than the width of the welding table.
More preferably, the clamping part of inverted L-shaped structure has been set firmly in the top integration of splint, the clamping part is including the horizontal portion that is located the top to and with horizontal portion fixed connection's perpendicular portion, the lower extreme of perpendicular portion and the top fixed connection and the integrated into one piece of splint, sliding mounting has the grip bar in the perpendicular portion internal slip on splint top, at the top surface fixed mounting of grip bar a plurality of hold-down spring, the lower extreme and the top surface fixed connection of grip bar of hold-down spring, the upper end and the horizontal portion inboard fixed connection on splint top of hold-down spring, hold-down spring can push away the grip bar downwards and support.
Further, loop bars are fixedly installed at the front end and the rear end of the clamping strip, the loop bars are arranged in a C-shaped mode and sleeved on the vertical portion of the top end of the clamping plate, the loop bars and the clamping strip form a square structure together, the loop bars are slidably sleeved on the vertical portion of the top end of the clamping plate, the two ends of the loop bars are fixedly connected with the clamping strip, and the loop bars and the clamping strip are sleeved on the vertical portion of the top end of the clamping plate together.
Still further, fixture still includes the limiting plate, the one end fixed mounting of limiting plate is on splint, and with the perpendicular portion fixed connection on splint top, the other end fixed mounting of limiting plate is on the layer board.
Preferably, through holes for the first transmission rod to pass through are formed in the workbench and the flat plate, the upper end of the first transmission rod is connected with the flat plate in a shaft rotating way, and the lower end of the first transmission rod penetrates through the workbench downwards and is connected with the workbench in a shaft rotating way; the contact spring and the rack are mutually perpendicular, and the moving unit is slidably arranged at the bottom of the workbench.
After the technical scheme is adopted, the invention has the following beneficial effects:
1. according to the invention, the workpiece is fixed through the matching of the supporting plate and the clamping plate, so that the workpiece is kept in a stable state in the transportation process and the processing process, the stability of the workpiece in the subsequent welding operation is further improved, and the processing effect is optimized.
2. According to the invention, through the movement of the conveying mechanism, the workpiece is more convenient to move before and after processing and in the processing process, the working efficiency is greatly improved, compared with the traditional manual workpiece taking and placing mode, the labor cost input is reduced, and through the mechanical mode, the processing position is more accurate and the processing effect is better.
3. According to the invention, through the cooperation of the devices and the components, the up-and-down displacement of the lifting mechanism is triggered by the trigger block, so that the automation degree of the welding process is improved, and the processing efficiency is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a bottom view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a split view of the present invention;
FIG. 5 is a partial schematic view of the present invention;
FIG. 6 is a block diagram of a speed change gearset of the present invention;
FIG. 7 is a block diagram of another perspective of a speed change gearset of the present invention;
FIG. 8 is a state diagram of the invention prior to contact of the trigger block and the ramp block;
fig. 9 is an enlarged view at B in fig. 8;
fig. 10 is an enlarged view at C in fig. 8;
FIG. 11 is a state diagram of the trigger block and ramp block of the present invention in contact;
fig. 12 is an enlarged view at D in fig. 11;
fig. 13 is a schematic view of a work to be welded in the present invention.
Reference numerals in the drawings: 1. a table, 2, a lifting mechanism, 3, a transport mechanism, 4, a clamping mechanism, 5, a workpiece, 6, a welding head, 7, a fixing clamp, 8, a sliding plate, 9, a vertical rail, 10, a sliding block, 11, a sliding chute, 12, a first screw, 13, a first screw hole, 14, a first gear, 15, a second gear, 16, a first transmission rod, 17, a third gear, 18, a change gear set, 19, a trigger gear, 20, a constant speed gear, 21, an accelerating gear, 22, a rack, 23, a return spring, 24, a mounting plate, 25, a bevel block, 26, a welding table, 27, a second screw, 28, a motor, 29, a moving unit, 30, a displacement slot, 31, a trigger bar, 32, a trigger block, 33, a supporting plate, 34, a clamping plate, 35, a clamping bar, 36, a pressing spring, 37, a bracket, 38, a flat plate, 39, a limit plate, 40, a loop bar, 41, a side box, 42, a channel, 43, a second transmission rod, 44, an arc plate, 45, and a return bar.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 13, a welding tool for a lightweight B-pillar assembly of an automobile provided by an embodiment of the invention includes a workbench 1, a lifting mechanism 2, a transporting mechanism 3 and a clamping mechanism 4.
The lifting mechanism 2 is fixedly installed on the workbench 1, the lifting mechanism 2 comprises a bracket 37 and a flat plate 38 fixedly installed at the top end of the bracket 37, the bracket 37 is fixedly installed on the workbench 1, a vertical rail 9 is fixedly installed on one side of the bracket 37, a sliding plate 8 is slidably installed on the vertical rail 9, and the sliding plate 8 is in an L-shaped arrangement and comprises a transverse plate at the top and a vertical plate integrally bent and formed with the transverse plate. A fixing clamp 7 is fixedly arranged on a vertical plate of the sliding plate 8, a welding head 6 is fixedly arranged on the fixing clamp 7, and the lifting mechanism 2 is used for driving the welding head 6 to vertically displace so as to finish welding work.
Specifically, a protruding slider 10 is provided on the side of the riser of the slide plate 8 near the vertical rail 9, as shown in fig. 6. Correspondingly, a sliding groove 11 is formed in the vertical track 9, the sliding groove 11 is matched with the sliding block 10, the sliding block 10 can slide up and down in the sliding groove 11, a first screw hole 13 penetrating through the transverse plate is formed in the transverse plate of the sliding plate 8, a first screw rod 12 is connected with the first screw hole 13 in a threaded manner, and the sliding plate 8 can be driven to move on the vertical track 9 by rotation of the first screw rod 12 so as to drive the welding head 6 to move up and down.
The upper end of the first screw rod 12 upwards penetrates out of a flat plate 38 at the top end of the bracket 37 and is fixedly connected with a first gear 14, the first screw rod 12 is connected with the flat plate 38 in a rotating manner, a second gear 15 is further rotatably arranged on the flat plate 38, the second gear 15 is meshed with the first gear 14, a first transmission rod 16 is fixedly arranged at the bottom of the second gear 15, and the first transmission rod 16 penetrates through the bracket 37. Specifically, the upper end of the first transmission rod 16 penetrates through the bracket 37 and the flat plate 38 upwards and then is fixedly connected with the second gear 15, the bottom end of the first transmission rod 16 penetrates through the bracket 37 downwards and is fixedly connected with the third gear 17 after the workbench 1, through holes for the first transmission rod 16 to penetrate through are formed in the workbench 1 and the flat plate 38, the upper ends of the first screw rod 12 and the first transmission rod 16 are both connected with the flat plate 38 in a rotating manner, the lower end of the first transmission rod 16 is connected with the workbench 1 in a rotating manner, and the third gear 17 rotates to drive the first transmission rod 16 to rotate so as to drive the second gear 15 to rotate and further drive the first gear 14 to rotate, so that the first screw rod 12 rotates.
The third gear 17 is engaged with a speed change gear set 18 as shown in fig. 7. The speed change gear set 18 comprises an acceleration gear 21, a constant speed gear 20 and a mounting plate 24, the third gear 17 is in meshed connection with the acceleration gear 21, a second transmission rod 43 is fixedly arranged at the bottom of the acceleration gear 21, as shown in fig. 6, the second transmission rod 43 is rotatably connected to the mounting plate 24, one side of the mounting plate 24 is fixedly connected with a side vertical plate, the mounting plate 24 is fixedly arranged on the bottom surface of the workbench 1 through the side vertical plate, and the mounting position of the mounting plate is shown in fig. 1. The top of the second transmission rod 43 is fixedly connected with the accelerating gear 21, the bottom of the second transmission rod 43 is rotatably connected with the mounting plate 24, and the constant speed gear 20 is fixedly sleeved on the second transmission rod 43. In the present embodiment, the number of teeth of the accelerating gear 21 is 3 times that of the third gear 17, so that one rotation of the accelerating gear 21 can drive the third gear 17 to rotate three times. Of course, in other embodiments, the number of teeth of the accelerating gear 21 may be more than 3 times the number of teeth of the third gear 17. Further, the constant speed gear 20 is in meshed connection with the trigger gear 19, the trigger gear 19 is rotatably sleeved on a connecting shaft, and the connecting shaft is fixedly installed on the installation plate 24. When the trigger gear 19 rotates, the constant-speed gear 20 is driven to rotate, the constant-speed gear 20 rotates to drive the coaxially arranged accelerating gear 21 to rotate, the accelerating gear 21 rotates to drive the third gear 17 to rotate, the third gear 17 rotates to drive the first transmission rod 16 to rotate, thereby driving the second gear 15 and the first gear 14 to rotate, finally driving the first screw 12, enabling the sliding plate 8 to displace downwards, driving the welding head 6 to displace downwards, and further completing welding at a required welding position.
Further, the trigger gear 19 is engaged with a rack 22, the rack 22 is slidably mounted on the mounting plate 24, as shown in fig. 6, an inverted T-shaped block is provided at the bottom end of the rack 22, correspondingly, a T-shaped slot is provided on the mounting plate 24, the T-shaped block is embedded in the T-shaped slot and can slide in the T-shaped slot, and the rack 22 can slide in the T-shaped slot provided on the mounting plate 24 through the T-shaped block provided at the bottom. A reset spring 23 is fixedly arranged at the tail end of the rack 22, the other end of the reset spring 23 is fixedly connected with a side vertical plate arranged on the mounting plate 24, a reset rod 45 is fixedly arranged at the tail end of the rack 22, one end of the reset rod 45 is arranged in the reset spring in a penetrating way and is fixedly connected with the rack 22, the other end of the reset rod 45 penetrates out of the side vertical plate and is in sliding connection with the side vertical plate, and a reset handle is arranged at the end part of the reset rod 45 penetrating out of the side vertical plate. The reset rod 45 is used for enabling the rack 22 to move towards one side of the reset spring 23, the front end of the rack 22 is fixedly provided with the inclined surface block 25, and when the inclined surface block 25 is used for moving towards one end close to the reset spring 23, the rack 22 is driven to move so as to drive the trigger gear 19 to rotate.
The trigger block 32 is adaptively arranged on one side of the inclined plane block 25, as shown in fig. 8 and 9, the opposite sides of the trigger block 32 and the inclined plane block 25 are respectively provided with inclined planes, the inclined planes of the trigger block 32 and the inclined plane block are adaptive, the trigger block 32 is fixedly arranged on the trigger spring 31, and a plurality of trigger blocks 32 are arranged on the trigger bar 31. The number of trigger blocks 32 and the spacing between adjacent trigger blocks 32 are adapted to the spacing by the number of welds required to be welded to the workpiece 5. The contact spring 31 and the rack 22 are mutually perpendicular, and the workpiece 5 is a B-pillar assembly of a lightweight automobile, and the reference shape of the B-pillar assembly is shown in fig. 13.
As shown in fig. 4, the transport mechanism 3 includes a second screw 27, a motor 28, and a moving unit 29, the moving unit 29 is slidably mounted on the table 1, in this embodiment, the moving unit 29 is slidably mounted on the bottom of the table 1, and the moving unit 29 is screwed with the second screw 27. As shown in fig. 1. The moving unit 29 has a T-shape including a lateral block at the top and a vertical block connected to the middle of the lower side of the lateral block. The conveying mechanism 3 is used for driving the workpiece 5 to move towards or away from the processing position, and replaces the operation of manually moving the workpiece 5 to replace welding spots in the traditional manual material taking and discharging and processing processes.
The trigger bar 31 is fixedly installed on the side wall of the moving unit 29, which is close to the welding head 6, and as shown in fig. 8, the trigger block 32 is used for pressing the inclined surface block 25 when the moving unit 29 is displaced from the initial position to the working position, so as to trigger the lifting mechanism 2 to drive the welding head 6 to displace downwards for welding operation. The spacing between the plurality of trigger blocks 32 is set according to the spacing of the welds required for welding the workpiece 5 such that each trigger block 32 corresponds to each weld. During operation, when the workpiece 5 is displaced to the processing position, the motor 28 is stopped, stopping the moving unit 29, and the welding head 6 is at the lowest point, i.e. the welding height, and the control system controls the welding head 6 to weld the workpiece 5. When a welding spot is welded, the control system starts the motor 28, the moving unit 29 continues to move to enable the next trigger block 32 to squeeze the inclined plane block 25, so that the workpiece 5 is driven to move to the next welding point, the welding of the second welding point is carried out, and so on until the welding of all the welding points is completed.
In this embodiment, when the rack 22 is displaced toward the return spring 23, the trigger gear 19 is rotated counterclockwise, the trigger gear 19 drives the constant speed gear 20 to rotate clockwise, the accelerating gear 21 is driven to rotate clockwise, the third gear 17 is driven to rotate counterclockwise, the second gear 15 is driven to rotate counterclockwise, the first gear 14 is driven to rotate clockwise, and at this time, the first screw 12 is driven to rotate clockwise, so that the sliding plate 8 is driven to displace vertically downward.
The clamping mechanism 4 comprises a supporting plate 33 and a clamping plate 34, the supporting plate 33 and the clamping plate 34 are fixedly arranged on a transverse block at the top of the moving unit 29 in a standing mode and used for bearing the workpiece 5, as shown in fig. 4 and 5, the supporting plate 33 and the clamping plate 34 are arranged in parallel and at intervals, the clamping plate 34 is matched with the supporting plate 33 and used for clamping the workpiece 5, the workpiece 5 is an automobile B column which needs to be welded, and the workpiece 5 can be clamped on the moving unit 29 through the supporting plate 33 and the clamping plate 34. The top end of the supporting plate 33 is also provided with an arc-shaped plate 44 matched with the workpiece 5, the arc-shaped plate 44 is fixedly connected to the outer side wall of the top end of the supporting plate 33, and the arc-shaped plate 44 is matched with the arc surface at the corner of the workpiece 5 to play a role in bearing the workpiece 5.
As shown in fig. 3 and 5, two displacement grooves 30 are formed in the table 1 corresponding to the positions of the pallet 33 and the clamping plate 34, the two displacement grooves 30 are respectively matched with the pallet 33 and the clamping plate 34, and the pallet 33 and the clamping plate 34 are respectively in sliding fit with the two displacement grooves 30, so that the moving unit 29 can slide left and right in the displacement grooves 30. The second screw rod 27 is connected to the vertical block of the moving unit 29 in a threaded manner, the second screw rod 27 penetrates through the vertical block of the moving unit 29, two ends of the second screw rod 27 are respectively connected with the workbench 1 in a rotating manner, a motor 28 is mounted at one end of the workbench 1 corresponding to the second screw rod 27, and an output shaft of the motor 28 is fixedly connected with one end of the second screw rod 27. In some possible embodiments, an edge box 41 is fixedly installed at one end of the workbench 1, the edge box 41 is hollow, the motor 28 is fixedly installed in the edge box 41, and the motor 28 can drive the second screw 27 to rotate after being started, so that the moving unit 29 can move along the horizontal direction at the bottom of the workbench 1.
As shown in fig. 2 to 5, a welding table 26 is fixedly mounted on the workbench 1, the welding table 26 is mounted on the workbench 1 between the two displacement grooves 30, the welding table 26 is arranged opposite to the welding head 6, the welding table 26 is used for bearing the workpiece 5 when the welding head 6 is pressed down, the welding head 6 and the welding table 26 are used for jointly acting to weld the workpiece 5, a gap area between the supporting plate 33 and the clamping plate 34 is provided with a channel 42, and particularly as shown in fig. 5, the channel 42 is used for the displacement of the moving unit 29 when the moving unit 29 moves to the position of the welding table 26, and the displacement is not affected. The width of the channel 42 is not less than the width of the welding table 26 so that the channel 42 can accommodate the welding table 26, avoiding friction of the pallet 33 and the clamping plate 34 with the welding table 26 when the moving unit 29 is displaced.
In order to enable the supporting plate 33 and the clamping plate 34 to better clamp the workpiece 5, a clamping part with an inverted L-shaped structure is integrally and fixedly arranged at the top end of the clamping plate 34. As shown in fig. 10, the clamping portion includes a transverse portion at the top end, and a vertical portion fixedly connected to the transverse portion, the lower end of the vertical portion is fixedly connected to the top end of the clamping plate 34 and integrally formed, the clamping bar 35 is slidably mounted in the vertical portion at the top end of the clamping plate 34, the top surface of the clamping bar 35 is fixedly provided with a plurality of compression springs 36, the lower end of the compression springs 36 is fixedly connected to the top surface of the clamping bar 35, the upper end of the compression springs 36 is fixedly connected to the inner side of the transverse portion at the top end of the clamping plate 34, that is, the compression springs 36 are connected between the clamping bar 35 and the transverse portion, and in a normal state, the compression springs 36 push the clamping bar 35 downward, so that a clamping force can be applied to one side of the workpiece 5 placed between the clamping bar 35 and the upper surface of the clamping plate 34. The clamping strip 35 and the compression spring 36 are used for clamping the workpiece 5, the loop bars 40 are fixedly arranged at the front end and the rear end of the clamping strip 35, the loop bars 40 are arranged in a C shape and sleeved on the vertical portion at the top end of the clamping plate 34, the loop bars 40 and the clamping strip 35 form a square structure together, the sliding sleeve is arranged on the vertical portion at the top end of the clamping plate 34, the two ends of the loop bars 40 are fixedly connected with the clamping strip 35, the loop bars 40 and the clamping strip 35 are sleeved on the vertical portion at the top end of the clamping plate 34 together, stability of the clamping strip 35 during clamping the workpiece 5 is ensured, and the clamping strip 35 is used for keeping the clamping strip 35 in a stable state to better clamp the workpiece 5.
Further, the clamping mechanism 4 further includes a limiting plate 39, one end of the limiting plate 39 is fixedly mounted on the clamping plate 34 and fixedly connected with the vertical portion at the top end of the clamping plate 34, and the other end of the limiting plate 39 is fixedly mounted on the supporting plate 33. The limiting plate 39 is used to limit the position of the workpiece 5, namely: the vertical part at the top end of the clamping plate 34 positions and limits the long side direction of the workpiece 5, and the limiting plate 39 positions and limits the short side of the workpiece 5, so that the workpiece 5 is accurately positioned and limited on the supporting plate 33 and the clamping plate 34, and when the conveying mechanism 3 drives the workpiece 5 to a processing area, the lifting mechanism 2 can be accurately aligned with the welding position on the workpiece 5, so that accurate welding is realized.
In use, the direction of the thread between the first screw 12 and the slide plate 8 is set, preferably such that when the first screw 12 is rotated clockwise, the slide plate 8 is displaced downward, when rotated counterclockwise, the slide plate 8 is displaced upward, and the direction of the thread of the second screw 27 and the moving unit 29 is additionally set, preferably such that the motor 28 is rotated forward, i.e., the second screw 27 is rotated forward, the moving unit 29 is moved toward the processing position, and when the motor 28 is rotated backward, the moving unit 29 is moved toward the initial position.
It should be noted that during the return of the mobile unit 29, the welding head 6 is closed and the return lever 45 is pulled to move the rack 22 away from the contact spring 31, so that the first trigger block 32 cannot come into contact with the bevel block 25, thus facilitating the return of the mobile unit 29 to the initial position. In the return process, the welding head 6 is driven to descend due to the movement of the rack 22, the welding table 26 is provided with an aperture, a space for downward displacement of the welding head 6 is provided, and in addition, due to the arrangement of the channel 42, the clamping plate 34 and the supporting plate 33 cannot rub with the overtravel welding head 6 and the welding table 26. In addition, in a specific use process, the sizes of the components in the clamping mechanism 4 can be changed, so that the production and processing requirements of workpieces 5 with different types can be met.
The working principle provided by the invention is as follows: firstly, an operator places a workpiece 5 on a supporting plate 33, pulls up a clamping strip 35 to place the workpiece 5, then abuts one end of the workpiece 5 on a position of a limiting plate 39, releases the clamping strip 35, at the moment, the workpiece 5 is clamped by the clamping strip 35, a trigger strip 31 is arranged at the end part of a moving unit 29, a motor 28 is started to rotate the motor 28, at the moment, the motor 28 drives a second screw 27 to rotate, because the moving unit 29 is in threaded connection with the second screw 27, at the moment, the supporting plate 33 and a clamping plate 34 of the moving unit 29 move in a displacement groove 30, when a first trigger block 32 on the trigger strip 31 presses a bevel block 25, the bevel block 25 starts to move towards one side close to a reset spring 23, at the moment, a rack 22 is driven to move towards one side close to the reset spring 23, at the moment, the rack 22 drives a trigger gear 19 to rotate, the trigger gear 19 drives a constant speed gear 20 to rotate, a second transmission rod 43 is driven to rotate, the accelerating gear 21 is rotated, the accelerating gear 21 drives the third gear 17 to rotate, the first transmission rod 16 is rotated, the second gear 15 is driven to rotate, at the moment, the first gear 14 is driven to rotate, the first screw rod 12 is driven to rotate, the sliding plate 8 is downwards displaced due to the threaded connection of the first screw rod 12 and the sliding plate 8, the welding head 6 is driven to downwards displace, further, the welding is completed at a required welding position, at the moment, the motor 28 stops rotating, the welding head 6 is kept still, after the welding is completed, the first trigger block 32 passes over the bevel block 25, at the moment, the bevel block 25 is reset under the action of the reset spring 23, the welding head 6 is reset under the action of the lifting mechanism 2, when the subsequent trigger block 32 is contacted with the bevel block 25, the operation is repeated until the last trigger block 32 passes over the bevel block 25, the motor 28 is continuously started, the moving unit 29 drives the welded workpiece 5 to leave the processing area, at this time, the operator pulls up the clamping bar 35, takes out the workpiece 5, closes the welding head 6, pulls out the reset lever 45 at this time to compress the reset spring 23, drives the rack 22 to move in a direction approaching the reset spring 23, avoids the contact between the trigger spring 31 and the trigger block 32 when resetting toward the initial position, and then opens the motor 28 to reverse the second screw 27, thereby driving the moving unit 29 to move toward the initial position.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (9)
1. The utility model provides a lightweight car B post assembly welding frock, comprises a workbench, elevating system, transport mechanism and fixture, elevating system is including fixing the support on the workstation and fixing the dull and stereotyped on the support top, vertical track has been set firmly in one side of support, slidable mounting has the sliding plate on vertical track, install the bonding tool through the fixation clamp on the sliding plate, threaded connection has first screw rod on the sliding plate, first screw rod upwards wears out the dull and stereotyped and fixedly connected with first gear on support top, first screw rod is connected with dull and stereotyped pivot, still rotate on the dull and stereotyped and be provided with first transfer line, fixed cover is equipped with the second gear with first gear engagement on first transfer line, the lower extreme of first transfer line runs through the support downwards and fixedly connected with third gear, its characterized in that: the third gear is connected with an accelerating gear in a meshed mode, the accelerating gear is fixedly arranged on a second transmission rod, the second transmission rod is rotatably connected to the mounting plate, a constant-speed gear is fixedly sleeved on the second transmission rod, the constant-speed gear is connected with a rack in a meshed mode, the rack is slidably connected to the mounting plate, a reset spring is fixedly arranged at the tail end of the rack, an inclined surface block is fixedly arranged at the front end of the rack, a trigger block is arranged on one side of the inclined surface block in a matched mode, inclined surfaces are respectively arranged on opposite sides of the trigger block and the inclined surface block, and the trigger block is fixedly arranged on a touch spring and provided with a plurality of trigger blocks;
the conveying mechanism comprises a second screw, a motor and a moving unit, the moving unit is in threaded connection with the second screw, and the trigger bar is fixedly arranged on the side wall, close to the welding head, of the moving unit; the clamping mechanism comprises a supporting plate and a clamping plate which are fixedly arranged on the moving unit, two displacement grooves are formed in the position, corresponding to the supporting plate and the clamping plate, on the workbench, the two displacement grooves are respectively matched with the supporting plate and the clamping plate, a welding table is fixedly arranged between the two displacement grooves on the workbench, and the welding table is arranged opposite to the welding head;
the constant-speed gear is meshed and connected with the rack through the trigger gear, the constant-speed gear is meshed and connected with the trigger gear, the trigger gear is meshed and connected with the rack, the trigger gear is rotationally sleeved on the connecting shaft, and the connecting shaft is fixedly arranged on the mounting plate; the number of teeth of the accelerating gear is not less than 3 times of the number of teeth of the third gear; the bottom of rack is provided with the T type piece that falls, has seted up T type groove on the mounting panel, and T type piece inlays and locates T type inslot and can slide in T type inslot.
2. The lightweight automotive B-pillar assembly welding fixture of claim 1, wherein: a side vertical plate is fixedly connected to one side of the mounting plate, the mounting plate is fixedly arranged on the bottom surface of the workbench through the side vertical plate, one end of a return spring is fixedly connected with the rack, and the other end of the return spring is fixedly connected with the side vertical plate; the tail part of the rack is fixedly provided with a reset rod, one end of the reset rod is penetrated in the reset spring and is fixedly connected with the rack, the other end of the reset rod penetrates out of the side vertical plate and is in sliding connection with the side vertical plate, and the end part of the reset rod penetrating out of the side vertical plate is provided with a reset handle.
3. The lightweight automotive B-pillar assembly welding fixture of claim 1, wherein: the sliding plate is L-shaped and comprises a transverse plate at the top and a vertical plate integrally bent and formed with the transverse plate, a fixing clamp is fixedly arranged on the vertical plate of the sliding plate, and a welding head is fixedly arranged on the fixing clamp; a protruding sliding block is arranged on one side, close to the vertical rail, of the vertical plate of the sliding plate, a sliding groove is correspondingly formed in the vertical rail, the sliding groove is matched with the sliding block, and the sliding block can slide up and down in the sliding groove.
4. The lightweight automotive B-pillar assembly welding fixture of claim 1, wherein: the mobile unit is T font, including the horizontal piece that is located the top and connect the perpendicular piece at horizontal piece downside middle part, threaded connection second screw rod on the perpendicular piece of mobile unit, the second screw rod runs through the perpendicular piece setting of mobile unit, the both ends of second screw rod rotate with the workstation respectively and are connected, correspond the one end installation motor of second screw rod at the workstation, the output shaft of motor and the one end fixed connection of second screw rod.
5. The welding fixture for the lightweight automobile B-pillar assembly, according to claim 4, wherein: the support plate and the clamping plate are fixedly and vertically arranged on a transverse block at the top of the mobile unit, the support plate and the clamping plate are parallel and are arranged at intervals, an arc-shaped plate is further arranged at the top end of the support plate, and the arc-shaped plate is fixedly connected to the outer side wall at the top end of the support plate; an edge box is fixedly arranged at one end of the workbench, and a motor is arranged in the edge box; the interval area between the supporting plate and the clamping plate is set as a channel, and the width of the channel is not smaller than the width of the welding table.
6. The welding fixture for the lightweight automobile B-pillar assembly, according to claim 5, wherein: the clamping part of the inverted L-shaped structure is integrally and fixedly arranged at the top end of the clamping plate, the clamping part comprises a transverse part positioned at the top end and a vertical part fixedly connected with the transverse part, the lower end of the vertical part is fixedly connected with the top end of the clamping plate and integrally formed, the clamping strip is slidably arranged in the vertical part at the top end of the clamping plate, the clamping strip is fixedly provided with a plurality of compression springs on the top surface, the lower ends of the compression springs are fixedly connected with the top surface of the clamping strip, the upper ends of the compression springs are fixedly connected with the inner side of the transverse part at the top end of the clamping plate, and the compression springs can push the clamping strip downwards.
7. The lightweight automotive B-pillar assembly welding fixture of claim 6, wherein: the clamping device is characterized in that loop bars are fixedly mounted at the front end and the rear end of the clamping strip, the loop bars are arranged in a C-shaped mode and sleeved on the vertical portion of the top end of the clamping plate, the loop bars and the clamping strip form a square structure together, the loop bars are slidably sleeved on the vertical portion of the top end of the clamping plate, the two ends of the loop bars are fixedly connected with the clamping strip, and the loop bars and the clamping strip are sleeved on the vertical portion of the top end of the clamping plate together.
8. The lightweight automotive B-pillar assembly welding fixture of claim 7, wherein: the clamping mechanism further comprises a limiting plate, one end of the limiting plate is fixedly arranged on the clamping plate and fixedly connected with the vertical portion at the top end of the clamping plate, and the other end of the limiting plate is fixedly arranged on the supporting plate.
9. The lightweight automotive B-pillar assembly welding fixture of claim 1, wherein: through holes for the first transmission rod to pass through are formed in the workbench and the flat plate, the upper end of the first transmission rod is connected with the flat plate in a shaft rotating way, and the lower end of the first transmission rod penetrates through the workbench downwards and is connected with the workbench in a shaft rotating way; the contact spring and the rack are mutually perpendicular, and the moving unit is slidably arranged at the bottom of the workbench.
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| CN202311068206.3A CN116765722B (en) | 2023-08-24 | 2023-08-24 | Lightweight car B post assembly welding frock |
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| CN202311068206.3A CN116765722B (en) | 2023-08-24 | 2023-08-24 | Lightweight car B post assembly welding frock |
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| CN116765722B true CN116765722B (en) | 2023-10-24 |
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