CN109848599B - Fork truck portal positioning welding design method based on streamlined production, portal welding positioner and welding method thereof - Google Patents
Fork truck portal positioning welding design method based on streamlined production, portal welding positioner and welding method thereof Download PDFInfo
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Abstract
The invention discloses a forklift gantry positioning welding design method based on streamlined production, a gantry welding positioner and a welding method thereof, wherein the welding method comprises the following steps: counting the welding workload of each welding robot; dividing welding stations according to the production beats, and planning the process layout of a production line; according to the welding position of the welding seam of the workpiece to be welded, determining the working position, the structural form, the positioning and clamping mode of the positioner, and selecting the power source of the positioner; according to the structure and welding position of the position changer, performing welding robot simulation, and verifying the structure of the position changer and the compliance of theoretical weldability; designing the action sequence of each station positioner and the coordination requirement of the action of the robot, writing a PLC control program, and performing automatic welding; according to the invention, through an online process layout mode, the complexity of hoisting the workpiece is reduced, the auxiliary working time is compressed to the maximum extent, the efficiency is further improved, and the process idea of sequencing is realized, so that the positioning welding of the complex welding seam is realized.
Description
Technical Field
The invention relates to the technical field of forklift manufacturing, in particular to a forklift mast positioning welding design method based on streamlined production, a mast welding positioner and a welding method thereof.
Background
Fork trucks are industrial transportation vehicles, and are various wheeled transportation vehicles that perform handling, stacking, and short-distance transportation operations on pallet goods. In the process of producing the portal, the welding production of the portal is usually carried out by manual welding or welding by a welding robot workstation. The manual welding production efficiency is low, the labor intensity is high, and the consistency is poor; welding robot workstation welds, and the auxiliary time is long, can't realize streamlined production, and investment cost is high.
Disclosure of Invention
Aiming at the defects or shortcomings, the invention aims to provide a forklift mast positioning welding design method based on streamlined production, a mast welding positioner and a welding method thereof.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a forklift mast positioning welding design method based on streamlined production comprises the following steps:
counting the welding workload of each welding robot;
dividing welding stations according to the production beats, and planning the process layout of a production line;
determining the working position, structural form, positioning and clamping modes of a positioner according to the welding position of a welding line of a workpiece to be welded, and selecting a power source of the positioner, wherein the positioner is used for positioning, clamping and overturning a portal to be welded;
according to the structure and welding position of the position changer, performing welding robot simulation, and verifying the structure of the position changer and the compliance of theoretical weldability;
and designing the action sequence of each station positioner and the coordination requirement with the action of the robot, writing a PLC control program, and performing automatic welding.
The method for designing a forklift mast positioning welding based on streamlined production according to claim 1, wherein said counting the welding workload of each welding robot specifically comprises: and counting the workload of each welding robot by combining theoretical calculation and field simulation writing, wherein the workload comprises counting the length of a welding seam of a workpiece to be welded and carrying out field simulation statistics on the welding time.
The portal welding positioner comprises a support frame, wherein the support frame comprises a basic bracket and a rotatable roll-over stand arranged on the basic bracket, and a transport mechanism for conveying a portal is arranged on the roll-over stand; a plurality of turnover station mechanisms with the same structure are axially arranged along the turnover frame, a pass-through positioning device is arranged on the turnover station mechanism, and a pressing device is arranged on one side of the turnover station mechanism, and a transverse clamping device is arranged on the other side of the turnover station mechanism.
The station mechanism comprises a station table arranged on the roll-over stand and a turnover device, the turnover device comprises a turnover cylinder and a rocker arm, a cylinder body of the turnover cylinder is connected with a basic support, a piston rod is connected with the bottom of the station table through the rocker arm, and when the piston rod moves, the piston rod drives the rocker arm which drives the roll-over stand to turn over.
The roll-over stand is turned 45 degrees or 90 degrees by the piston rod.
The through type positioning device comprises a limiting device arranged on the station platform, a clamping groove used for limiting the door frame is formed in the limiting device, and a positioning roller used for pushing the door frame to pass through is arranged in the clamping groove.
The transverse clamping device comprises a first clamping cylinder which is arranged on the roll-over stand in parallel, an adjusting sleeve is arranged at the push rod end of the first clamping cylinder, and the adjusting sleeve is matched with the through type positioning device to clamp the positioning portal frame.
The lower end of the station platform is provided with a longitudinal positioning device, the longitudinal positioning device comprises a second clamping cylinder, and a positioning pin is arranged at the push rod end of the second clamping cylinder.
The two ends of the roll-over stand are connected with the basic bracket through rotary supports.
The forklift mast welding method is characterized by comprising the following steps of:
1) Pushing the door frame to be welded into the turnover frame, and starting a positioner switch after the door frame to be welded reaches the first turnover station mechanism;
2) After receiving the opening information, the transverse clamping device of the first overturning station mechanism is matched with the through type positioning device to transversely clamp the portal part to be welded, and meanwhile, a starting signal is sent to the welding robot;
3) After receiving the starting signal, the robot welds the door frame to be welded on the first turnover station mechanism, and after the welding is completed, the robot enters a welding position at the next turnover station mechanism, and the transverse clamping device is opened;
4) Pushing a portal to be welded to enter a turnover station mechanism, matching a transverse clamping device with a through type positioning device after receiving opening information, transversely clamping the portal to be welded, sending a turnover signal to a turnover air cylinder, receiving the turnover signal by the turnover air cylinder, starting turnover, and simultaneously giving a robot starting signal after the turnover is in place;
5) After the robot receives the starting signal, welding is carried out, after welding is finished, the robot enters a welding position at the next overturning station mechanism, meanwhile, overturning signals are given to the overturning air cylinder, the overturning air cylinder receives the overturning signals, the overturning air cylinder starts to return to the original position, and meanwhile, the transverse clamping device is opened;
6) Repeating steps 4) -5) until all welding positions are completed.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a forklift portal positioning welding design method based on streamlined production, which is designed according to a separate and online process idea, breaks through a traditional robot workstation mode and a production line process layout mode which is more in line with the automatic production line layout requirement and lean idea, reduces the complexity of workpiece hoisting, compresses auxiliary working time to the greatest extent, further improves efficiency, and realizes the separate process idea, thereby realizing the positioning welding of complex welding seams, simplifying the structure and control of a welding positioner and greatly reducing capital investment.
Furthermore, the invention provides the portal welding positioner which can position, fix and turn the portal through the support frame to be welded, so that the welding of the portal is more accurate and in place, the trouble of manual operation is reduced, and the working efficiency is improved.
Furthermore, the invention also provides a forklift portal welding method, the portal can be positioned more accurately by using the transformer, and the welding robot can command and weld more accurately by matching the positioning device, the clamping device and the turnover device and transmitting signals, so that the welding forms a streamline process, and the welding working efficiency and the welding quality are improved.
Drawings
FIG. 1 is a flow chart of the design method of the present invention;
FIG. 2 is a schematic view of a gantry welding positioner of the present invention;
FIG. 3 is a top view of the gantry welding positioner configuration of the present invention.
In the figure, 1-a supporting frame; 2-a longitudinal positioning device; 3-a compression mechanism; 4-a pass-through positioning device; 5-a transverse clamping device; 6-a turnover mechanism; 7-turning limiting device; 8-a portal; 9-a turnover station mechanism; 1-a foundation bracket; 1-2-a roll-over stand; 1-3-power transmission rollers; 1-4-rotating the support frame; 4-1, a limiting device; 4-2-positioning rollers; 4-3-clamping groove; 5-1, an adjusting sleeve; 6-1, turning over the air cylinder; 6-2-rocker arms; 7-1, a limiting plate; 9-1 station table.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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 fall within the scope of the invention.
As shown in fig. 1, the invention provides a forklift gantry positioning welding design method based on streamlined production, which comprises the following steps:
counting the welding workload of each welding robot;
step1, dividing welding stations according to production beats, and planning a process layout of a production line;
and counting the workload of each welding robot by combining theoretical calculation and on-site simulation writing. Dividing welding stations according to the production beats, planning the process layout of a production line, and realizing on-line positioning welding production.
The method for calculating the workload of each welding by combining theoretical calculation and on-site simulation writing comprises the following steps: and (5) carrying out weld length statistics and welding time on-site simulation statistics.
Dividing welding stations according to production beats, planning the process layout of a production line, and realizing on-line positioning welding production. Comprises the division of welding stations, the welding seam position, the welding seam length and the like of each welding station,
Step2, determining the working position, structural form, positioning and clamping modes of a positioner according to the welding position of a welding line of a workpiece to be welded, and selecting a power source of the positioner, wherein the positioner is used for positioning, clamping and overturning a portal to be welded;
according to the welding position of the welding line, determining the working position, structural form, positioning and clamping modes of a positioner, selecting a power source of the positioner and the like, designing the positioner and selecting a pneumatic component; the device comprises positioning point setting, positioning device structure, clamping device layout and structure, turnover mechanism structure and signal providing.
Step3, performing welding robot simulation according to the structure and the welding position of the positioner, and verifying the structure of the positioner and the compliance of the theoretical weldability;
and according to the structure and the welding position of the positioner, performing robot welding simulation, and verifying the structure and the theoretical weldability of the positioner. The method comprises the steps of building a three-dimensional model of the positioner and dynamically simulating a welding process.
Step4, designing the action sequence of each station positioner and the coordination requirement of robot actions, writing a PLC control program, and performing automatic welding.
Specifically, the welding work load counting method for each welding robot specifically includes: and counting the workload of each welding robot by combining theoretical calculation and field simulation writing, wherein the workload comprises counting the length of a welding seam of a workpiece to be welded and carrying out field simulation statistics on the welding time.
In the present invention, a plurality of displacers are provided in the whole assembly line welding process, and the welding robot is matched with the plurality of displacers, and in the present invention, four displacers are arranged for assembly line welding, for example.
As shown in fig. 2 and 3, the invention also provides a portal welding positioner, which comprises a support frame 1, wherein the support frame 1 comprises a basic support frame 1-1 and a rotatable roll-over stand 1-2 arranged on the basic support frame 1-1, and a transport mechanism for conveying a portal 8 is arranged on the roll-over stand 1-2; a plurality of turnover station mechanisms 9 with the same structure are axially arranged along the turnover frame 1-2, a through type positioning device 4 is arranged on the turnover station mechanisms, and a pressing device 3 is arranged on one side of each turnover station mechanism 9, and a transverse clamping device 5 is arranged on the other side of each turnover station mechanism 9. The two ends of the roll-over stand 1-2 are connected with the basic stand 1-1 through the rotary support stand 1-4.
Specifically, the station mechanism 9 comprises a station table 9-1 and a turnover device 6 which are arranged on the turnover frame 1-2, the turnover device 6 comprises a turnover cylinder 6-1 and a rocker arm 6-2, a cylinder body of the turnover cylinder 6-1 is connected with the basic bracket 1-1, a piston rod is connected with the bottom of the station table 9-1 through the rocker arm 6-2, and when the piston rod moves, the piston rod drives the rocker arm 6-2, and the rocker arm 6-2 drives the turnover frame 1-2 to turn.
Preferably, in the present invention, the roll-over stand 1-2 is turned 45 ° or 90 ° by a piston rod. The conveying mechanism is specifically a power transmission roller 1-3, and the power transmission rollers I-III can finish the conveying of the portal frame.
The pass-through positioning device 4 comprises a limiting device 4-1 arranged on a station table 9-1, the limiting device 4-1 is provided with a clamping groove 4-3 for limiting the portal 8, a positioning roller 4-2 for pushing the portal 8 to pass through is arranged in the clamping groove 4-3, and the positioning roller 4-2 is used for guiding when the transverse positioning and the portal 8 pass through.
The transverse clamping device 5 comprises a first clamping cylinder which is arranged on the roll-over stand 1-2 in parallel, an adjusting sleeve 5-1 is arranged at the push rod end of the first clamping cylinder, the adjusting sleeve 5-1 is matched with the through type positioning device 4, and the positioning door frame 8 is clamped.
Further, a longitudinal positioning device 2 is installed at the lower end of the station table 9-1, the longitudinal positioning device 2 comprises a second clamping cylinder, and a positioning pin is installed at the push rod end of the second clamping cylinder. When the door frame 8 enters the station, the second clamping air cylinder pushes the positioning pin to perform longitudinal positioning, the moving door frame 8 is blocked and positioned, and the welding position of the door frame 8 is aligned.
Preferably, the basic bracket 1-1 is provided with the turnover limiting device 7, and the turnover limiting device 7 comprises a limiting plate 7-1 and a proximity switch arranged on the limiting plate 7-1. The limiting device can determine the position according to the overturning angle. The method specifically comprises the following steps: when the turnover cylinder 6-1 pushes the turnover frame 1-2 to rotate, the turnover frame 1-2 contacts with the limiting device 7 in the rotation process and contacts with the proximity switch, the proximity switch provides a signal for the PLC that the positioner turns in place, the PLC receives the signal for the electromagnetic valve, the electromagnetic valve acts, the air source is cut off, the movement of the cylinder is stopped, and the limiting is completed.
The rocker arm of the turnover mechanism greatly reduces the requirement on output force of the air cylinder, and simultaneously provides a simple and convenient structure for turnover of 45 degrees and 90 degrees.
The forklift mast welding method is characterized by comprising the following steps of:
1) Pushing the door frame 8 to be welded into the roll-over stand 1-2, and starting a positioner switch after the door frame 8 to be welded reaches the first roll-over station mechanism;
2) After receiving the opening information, the transverse clamping device 5 of the first turnover station mechanism is matched with the pass-through positioning device 4 to transversely clamp the door frame 8 to be welded, and simultaneously, a starting signal is sent to the welding robot;
3) After receiving the starting signal, the robot welds the portal 8 to be welded on the first turnover station mechanism, and after the welding is completed, the portal enters the welding position of the next turnover station mechanism, and the transverse clamping device 5 is opened;
4) Pushing a portal 8 to be welded to enter a turnover station mechanism, matching with a pass-through positioning device 4 after the transverse clamping device 5 receives opening information, transversely clamping the portal 8 to be welded, simultaneously sending a turnover signal to a turnover air cylinder, enabling the turnover air cylinder to receive the turnover signal, and simultaneously enabling a signal to a robot after the turnover is in place;
5) After the robot receives the starting signal, welding is carried out, after welding is finished, the robot enters a welding position at the next overturning station mechanism, meanwhile, overturning signals are given to the overturning air cylinder, the overturning air cylinder receives the overturning signals, the overturning air cylinder starts to return to the original position, and meanwhile, the transverse clamping device 5 is opened;
6) Repeating steps 4) -5) until all welding positions are completed.
The displacer includes: 0 °, ±45°, and±90° displacers. Wherein, the position changer is provided with a longitudinal positioning device, a transverse positioning device and a turnover device (only +/-45 degrees and +/-90 degrees).
For example, 5 stations are illustrated:
station 1 (0 degree position):
(1) And manually starting the longitudinal positioning device, enabling the positioning pin to extend out under the pushing of the air cylinder to realize longitudinal positioning, and manually pushing the workpiece into the online welding positioner. After the workpiece is longitudinally positioned in place, manually starting a clamping cylinder; (2) After receiving the information, the transverse clamping cylinder starts to clamp the workpiece, and after clamping in place, a starting signal is sent to the robot at the same time; (3) And the robot receives the starting signal, starts, welds, finishes welding, returns the robot (enters another station for welding according to reservation), gives a clamping cylinder signal (4), receives the robot return in-place signal from the clamping cylinder, and releases the clamping cylinder. Manually pressing a longitudinal positioning cylinder control button and lowering a longitudinal positioning plate; the workpiece is manually pushed into the area to be welded.
Station 2 (90 degree position):
(1) Manually starting a longitudinal positioning device, enabling a positioning pin to extend out under the pushing of an air cylinder to realize longitudinal positioning, manually pushing a workpiece into an online welding positioner, and starting a transverse clamping air cylinder after the workpiece is longitudinally positioned in place; (2) After receiving the information, the transverse clamping cylinder starts to clamp the workpiece, and after clamping in place, a starting signal is sent to the pressing cylinder; (3) The pressing cylinder receives the signal, starts to press the workpiece, and simultaneously sends a signal to the overturning cylinder; (4) The overturning cylinder receives the signal, starts overturning, and gives a signal to the robot after overturning in place; (5) The robot receives the signal, starts welding, finishes welding, returns (enters another station for welding according to reservation), and simultaneously gives a signal to the overturning cylinder; (6) The overturning cylinder receives the signal, and starts to return to the position, and returns to the position, and simultaneously signals the compressing cylinder; (7) The compression cylinder receives the signal to be loosened, and simultaneously signals the clamping cylinder; and (8) receiving signals by the clamping cylinder, and loosening the clamping. The longitudinal positioning cylinder is started manually, the positioning plate is lowered, and the workpiece is pushed into the area to be welded manually.
Station 3 (horizontal +45 degree position):
(1) The longitudinal positioning device is started manually, the positioning pin stretches out under the pushing of the air cylinder to realize longitudinal positioning, the workpiece is pushed into the online welding positioner manually, and after the workpiece is positioned in place longitudinally, the air cylinder is clamped transversely by the manual air cylinder and clamped in place transversely, and meanwhile signals are sent to the compression air cylinder; (2) The compressing cylinder receives the signal and starts to compress in the vertical direction, and meanwhile, a starting signal is sent to the robot; (3) The robot receives the starting signal, starts and welds, finishes welding, returns the robot, and gives a signal to the overturning cylinder; (4) The overturning cylinder receives a robot return in-place signal, starts overturning, overturns in-place and gives a robot signal; (5) The robot receives a turning in-place signal of the turning cylinder, starts welding, completes welding, returns (enters another station for welding according to reservation), and simultaneously gives a signal to the turning cylinder; (6) The overturning cylinder receives a robot return-to-place signal, starts reset, resets in place and simultaneously gives a compressing cylinder signal; (7) The compression cylinder receives the signal to be loosened, and simultaneously signals the clamping cylinder; and (8) receiving a signal by the clamping cylinder, and starting to loosen the clamping. And pressing a manual button, starting the longitudinal positioning cylinder to lower the positioning plate, and manually pushing the workpiece into the area to be welded.
Station 4 (-90 degree)
(1) Manually starting a longitudinal positioning device, enabling a positioning pin to stretch out under the pushing of an air cylinder to realize longitudinal positioning, manually pushing a workpiece into an online welding positioner, and manually starting a transverse clamping air cylinder after the workpiece is longitudinally positioned in place; (2) After receiving the information, the transverse clamping cylinder starts to clamp the workpiece, and after clamping in place, a starting signal is sent to the pressing cylinder; (3) The pressing cylinder receives the signal, starts to press the workpiece, and simultaneously sends a signal to the overturning cylinder; (4) The overturning cylinder receives the signal, starts overturning, and gives a signal to the robot after overturning in place; (5) The robot receives the signal, starts welding, finishes welding, returns (enters another station for welding according to reservation), and simultaneously gives a signal to the overturning cylinder; (6) The overturning cylinder receives the signal, and starts to return to the position, and returns to the position, and simultaneously signals the compressing cylinder; (7) The compression cylinder receives the signal to be loosened, and simultaneously signals the clamping cylinder; and (8) receiving signals by the clamping cylinder, and loosening the clamping. The longitudinal positioning cylinder is started manually, the positioning plate is lowered, and the workpiece is pushed into the area to be welded manually.
Station 5 (horizontal + minus 90 degree)
(1) Manually starting a longitudinal positioning device, enabling a positioning pin to extend out under the pushing of an air cylinder to realize longitudinal positioning, manually pushing a workpiece into an online welding positioner, and after the workpiece is longitudinally positioned in place, manually starting a transverse clamping air cylinder, transversely clamping in place, and simultaneously sending a signal to a compression air cylinder; (2) The compressing cylinder receives the signal and starts to compress in the vertical direction, and simultaneously sends a starting signal to the robot; (3) The robot receives the starting signal, starts and welds, finishes welding, returns the robot, and gives a signal to the overturning cylinder; (4) The overturning cylinder receives a robot return in-place signal, starts overturning, overturns in-place and gives a robot signal; (5) The robot receives a turning in-place signal of the turning cylinder, starts welding, completes welding, returns (enters another station for welding according to reservation), and simultaneously gives a signal to the turning cylinder; (6) The overturning cylinder receives a robot return-to-place signal, starts reset, and simultaneously gives a compressing cylinder signal when the reset is in place; (7) The compression cylinder receives the signal to be loosened, and simultaneously signals the clamping cylinder; and (8) receiving a signal by the clamping cylinder, and starting to loosen the clamping. Pressing a manual button, longitudinally positioning the air cylinder, starting to lower the positioning plate, and manually pushing the workpiece into the area to be calibrated.
It will be apparent to those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of this invention, and that certain modifications and variations may be made in part of this invention by those skilled in the art, all of which are shown and described with the understanding that they are considered to be within the scope of this invention.
Claims (7)
1. A forklift mast positioning welding design method based on streamlined production is characterized by comprising the following steps:
counting the welding workload of each welding robot;
dividing welding stations according to the production beats, and planning the process layout of a production line;
determining the working position, structural form, positioning and clamping modes of a positioner according to the welding position of a welding line of a workpiece to be welded, and selecting a power source of the positioner, wherein the positioner is used for positioning, clamping and overturning a portal to be welded; the displacer includes: the support frame (1), the support frame (1) includes the basic support (1-1) and installs the rotatable roll-over stand (1-2) on the basic support (1-1), install the transport loading mechanism used for conveying the portal (8) on the roll-over stand (1-2); a plurality of turnover station mechanisms (9) with the same structure are axially arranged along the turnover frame (1-2), a pass-through positioning device (4) is arranged on the turnover station mechanisms, one side of each turnover station mechanism (9) is provided with a pressing device (3), and the other side of each turnover station mechanism is provided with a transverse clamping device (5); the station mechanism (9) comprises a station table (9-1) arranged on the turnover frame (1-2) and a turnover device (6), the turnover device (6) comprises a turnover cylinder (6-1) and a rocker arm (6-2), a cylinder body of the turnover cylinder (6-1) is connected with the base support (1-1), a piston rod is connected with the bottom of the station table (9-1) through the rocker arm (6-2), when the piston rod moves, the piston rod drives the rocker arm (6-2), and the rocker arm (6-2) drives the turnover frame (1-2) to turn; the through type positioning device (4) comprises a limiting device (4-1) arranged on the station table (9-1), a clamping groove (4-3) for limiting the portal (8) is formed in the limiting device (4-1), and a positioning roller (4-2) for pushing the portal (8) to pass is arranged in the clamping groove (4-3); the transverse clamping device (5) comprises a first clamping cylinder which is arranged on the roll-over stand (1-2) in parallel, an adjusting sleeve (5-1) is arranged at the push rod end of the first clamping cylinder, the adjusting sleeve (5-1) is matched with the through type positioning device (4), and the positioning portal (8) is clamped;
according to the structure and welding position of the position changer, performing welding robot simulation, and verifying the structure of the position changer and the compliance of theoretical weldability;
and designing the action sequence of each station positioner and the coordination requirement with the action of the robot, writing a PLC control program, and performing automatic welding.
2. The method for designing a forklift mast positioning welding based on streamlined production according to claim 1, wherein said counting the welding workload of each welding robot specifically comprises: and counting the workload of each welding robot by combining theoretical calculation and field simulation writing, wherein the workload comprises counting the length of a welding seam of a workpiece to be welded and carrying out field simulation statistics on the welding time.
3. The portal welding positioner is characterized by comprising a support frame (1), wherein the support frame (1) comprises a basic support frame (1-1) and a rotatable roll-over stand (1-2) arranged on the basic support frame (1-1), and a transport mechanism for conveying a portal (8) is arranged on the roll-over stand (1-2); a plurality of turnover station mechanisms (9) with the same structure are axially arranged along the turnover frame (1-2), a pass-through positioning device (4) is arranged on the turnover station mechanisms, one side of each turnover station mechanism (9) is provided with a pressing device (3), and the other side of each turnover station mechanism is provided with a transverse clamping device (5); the station mechanism (9) comprises a station table (9-1) arranged on the turnover frame (1-2) and a turnover device (6), the turnover device (6) comprises a turnover cylinder (6-1) and a rocker arm (6-2), a cylinder body of the turnover cylinder (6-1) is connected with the base support (1-1), a piston rod is connected with the bottom of the station table (9-1) through the rocker arm (6-2), when the piston rod moves, the piston rod drives the rocker arm (6-2), and the rocker arm (6-2) drives the turnover frame (1-2) to turn; the through type positioning device (4) comprises a limiting device (4-1) arranged on the station table (9-1), a clamping groove (4-3) for limiting the portal (8) is formed in the limiting device (4-1), and a positioning roller (4-2) for pushing the portal (8) to pass is arranged in the clamping groove (4-3); the transverse clamping device (5) comprises a first clamping cylinder which is arranged on the roll-over stand (1-2) in parallel, an adjusting sleeve (5-1) is arranged at the push rod end of the first clamping cylinder, the adjusting sleeve (5-1) is matched with the through type positioning device (4), and the positioning portal (8) is clamped.
4. A portal welding positioner according to claim 3, characterized in that the roll-over stand (1-2) is turned 45 ° or 90 ° by means of a piston rod.
5. A portal welding positioner according to claim 3, characterized in that the lower end of the station table (9-1) is provided with a longitudinal positioning device (2), the longitudinal positioning device (2) comprising a second clamping cylinder, the push rod end of which is provided with a positioning pin.
6. A gantry welding positioner according to claim 3, characterized in that the two ends of the roll-over stand (1-2) are connected to the basic frame (1-1) by means of swivel supports (1-4).
7. A forklift mast welding method based on the mast welding positioner of claim 3, comprising:
1) Pushing the door frame (8) to be welded into the turnover frame (1-2), and starting a positioner switch after the door frame (8) to be welded reaches the first turnover station mechanism;
2) After receiving the opening information, the transverse clamping device (5) of the first turnover station mechanism is matched with the pass-through positioning device (4) to transversely clamp the door frame (8) to be welded, and simultaneously, a starting signal is sent to the welding robot;
3) After receiving a starting signal, the robot welds a portal (8) to be welded on the first turnover station mechanism, and after welding, the portal enters a welding position at the next turnover station mechanism, and the transverse clamping device (5) is opened;
4) Pushing a portal (8) to be welded to enter a turnover station mechanism, matching with a through type positioning device (4) after receiving opening information, transversely clamping the portal (8) to be welded, sending a turnover signal to a turnover cylinder, receiving the turnover signal by the turnover cylinder, starting turnover, and simultaneously starting a signal for a robot after the turnover is in place;
5) After the robot receives the starting signal, welding is carried out, after welding is finished, the robot enters a welding position at the next overturning station mechanism, meanwhile, overturning signals are given to the overturning air cylinder, the overturning air cylinder receives the overturning signals, the overturning air cylinder starts to return to the original position, and meanwhile, the transverse clamping device (5) is opened;
6) Repeating steps 4) -5) until all welding positions are completed.
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| CN201910232935.5A CN109848599B (en) | 2019-03-26 | 2019-03-26 | Fork truck portal positioning welding design method based on streamlined production, portal welding positioner and welding method thereof |
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| CA2390386A1 (en) * | 2001-07-06 | 2003-01-06 | Erico International Corporation | Welding apparatus and method |
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| CN107138899A (en) * | 2017-06-21 | 2017-09-08 | 山东新活新材料科技有限公司 | Aluminum alloy mould plate welds positioning fixture bench |
| CN107617827A (en) * | 2017-09-26 | 2018-01-23 | 宁波如意股份有限公司 | One kind storage vehicle door frame automatic welding system |
| CN209736867U (en) * | 2019-03-26 | 2019-12-06 | 安徽合力股份有限公司宝鸡合力叉车厂 | fork truck portal welding positioner based on streamlined production |
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2019
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| CA2390386A1 (en) * | 2001-07-06 | 2003-01-06 | Erico International Corporation | Welding apparatus and method |
| CN202667957U (en) * | 2012-06-15 | 2013-01-16 | 安徽安鑫货叉有限公司 | Pallet fork automatic welding working platform |
| CN102744548A (en) * | 2012-07-27 | 2012-10-24 | 浙江大学 | Automatic repair welding flexible positioner of manual-operation pallet truck |
| CN203045168U (en) * | 2012-11-30 | 2013-07-10 | 湖南鑫众工业装备有限责任公司 | Lean production line for welding movable support leg |
| CN204818586U (en) * | 2015-07-24 | 2015-12-02 | 安徽合力股份有限公司宝鸡合力叉车厂 | Pneumatic ware that shifts that welds |
| CN107138899A (en) * | 2017-06-21 | 2017-09-08 | 山东新活新材料科技有限公司 | Aluminum alloy mould plate welds positioning fixture bench |
| CN107617827A (en) * | 2017-09-26 | 2018-01-23 | 宁波如意股份有限公司 | One kind storage vehicle door frame automatic welding system |
| CN209736867U (en) * | 2019-03-26 | 2019-12-06 | 安徽合力股份有限公司宝鸡合力叉车厂 | fork truck portal welding positioner based on streamlined production |
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| CN109848599A (en) | 2019-06-07 |
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