CN109877491B - Automatic iron core welding machine - Google Patents
Automatic iron core welding machine Download PDFInfo
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- CN109877491B CN109877491B CN201910172032.2A CN201910172032A CN109877491B CN 109877491 B CN109877491 B CN 109877491B CN 201910172032 A CN201910172032 A CN 201910172032A CN 109877491 B CN109877491 B CN 109877491B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 238000003466 welding Methods 0.000 title claims abstract description 138
- 230000007246 mechanism Effects 0.000 claims abstract description 132
- 238000003825 pressing Methods 0.000 claims description 45
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 11
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- 239000003921 oil Substances 0.000 claims description 4
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- 210000004907 gland Anatomy 0.000 claims description 3
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- 238000009434 installation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
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- 230000006872 improvement Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
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- 238000003475 lamination Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 240000007643 Phytolacca americana Species 0.000 description 1
- 235000009074 Phytolacca americana Nutrition 0.000 description 1
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Abstract
The invention discloses an automatic iron core welding machine, which is improved on the basis of the existing automatic iron core welding machine, wherein a feeding mechanism is designed as an indexing rotary feeding mechanism, a welding station and a feeding station are switched by rotation of a turntable so as to convey an iron core, and an iron core supporting cylinder for placing the iron core is arranged on the turntable; simultaneously, an automatic assembling and disassembling mechanism for the iron core positioning rod is correspondingly designed, and the mechanism adopts a positioning rod lifting driving mechanism arranged at the bottom of the workbench and corresponding to the feeding station to drive a positioning rod base in the iron core supporting cylinder and a plurality of iron core positioning rods vertically fixed on the positioning rod base to move up and down, so that the function of leading the iron core positioning rods into and out of the iron core wire slots is realized. And when the iron core locating rod is inserted into the iron core wire slot, a magnet used for being adsorbed to the bottom of the iron core is arranged on the base of the locating rod. The invention can automatically complete the installation and the disassembly of the iron core positioning rod in the feeding process, and has higher automation degree, thereby remarkably improving the production efficiency.
Description
Technical Field
The invention relates to an automatic iron core welding machine.
Background
As known, in the known motor manufacturing industry, a stator core is manufactured by adopting a mode of welding and fixing after lamination of silicon steel sheets, and the effect of welding after lamination is to reduce hysteresis loss and eddy current loss of a motor and prevent the motor from being overheated during operation, thereby reducing efficiency and even burning. Many manufacturers currently use special welding equipment, either purchased or designed by themselves, for welding the core. The welding equipment generally comprises a workbench, an iron core positioning tool arranged on the workbench, a feeding mechanism, a welding gun and a driving mechanism for driving the welding gun to move.
Compared with manual operation, the welding device has higher welding efficiency and accuracy, and partial special-designed welding devices can realize special welding operations such as oblique welding and the like, so that the welding track is convenient to control. For example, the applicant manufactured and declared an invention patent (application number 201610768272.5) is a high-precision automatic welding device for silicon steel sheets, which adopts an annular welding gun disc to mount a welding gun, and further designs the welding gun disc into a rotatable form, adopts a driving motor to connect and drive the welding gun disc to move through a transmission mechanism, so that the welding gun disc can perform stable horizontal rotation during operation, and the welding gun action on the welding gun disc is controlled with high precision so as to implement oblique welding operation. And when a plurality of welding guns are fixed on the welding gun disc, multi-point oblique welding operation can be synchronously performed, so that the operation efficiency and quality are greatly improved, and the requirements of customers are better met.
Meanwhile, the sheet arranging mechanism of the welding equipment is specially designed to be a poking sheet arranging mechanism, a mode that the ejector rod pokes from bottom to top and is matched with the downward pressing guide frame to press the iron core is adopted, wherein the punching top of the ejector rod drives the silicon steel sheets to bend and arch, complex stress inside each silicon steel sheet is eliminated, the silicon steel sheets are concentrated and tightly adhered, then rebound and fall back to be flat under the action of the pressure of the downward pressing guide frame, self gravity and material deformation reset force, and an excellent sheet arranging effect is achieved. The implementation effect is good, the silicon steel sheets after being processed can be laminated in order, the lamination degree is higher, and the subsequent welding quality of the silicon steel sheets is improved to a certain extent.
In addition, the welding device is matched with the guide rail sliding type double-station feeding mechanism, the guide rail sliding type double-station feeding mechanism is provided with two sliding carrying platforms for alternately feeding, when one of the two sliding carrying platforms is located on a welding station for operation, the other one of the two sliding carrying platforms can be used for stacking silicon steel sheets in advance, so that the working efficiency is greatly improved, the sliding carrying platforms are controlled to translate by the translation driving mechanism, a special path is provided, the stability is good, the moving distance is short, the silicon steel sheets on the sliding carrying platforms can be effectively prevented from shaking and misplacement, and the follow-up welding precision is improved.
Of course, the welding device has a plurality of functions and is convenient to use, but in accordance with the concept of continuous innovation and improvement of the technology, research and development personnel find that the following urgent improvement in terms of production automation still exists in the process of applying the welding device:
1) Improvement of automation degree is greatly influenced by installation and disassembly of iron core positioning rod
The iron core needs to be corrected and positioned by adopting the positioning rods before welding, namely, a plurality of vertical positioning rods are inserted into the inner side wire slots of the iron core, so that the influence on welding precision and quality caused by dislocation deflection among silicon steel sheets is avoided, and the positioning rods also need to be removed after welding is finished. However, in the prior art, all the installation and the dismantling of the positioning rod are performed manually, the positioning rod is installed on a fixture of the welding device in advance by a worker, and then the wire slot on the iron core is correspondingly sleeved on the positioning rod. Because the iron core wire slot is narrower, the locating rod is more, so even experienced workers need to spend more time (repeatedly calibrating the iron core locating rod and the iron core wire slot) to carry out the installation operation, and then the disassembly is carried out, the operation is complex, and the welding operation efficiency is greatly reduced.
And just because the locating lever still adopts the manual work to install, cause welding set unable and many leading automatic equipment that adopts the manipulator to carry and place the iron core better links up, cause the holistic production efficiency of iron core unable further improvement.
2) The existing feeding mechanism needs to be provided with a guide rail and a sliding carrier, has a complex structure, and is not beneficial to the design and introduction of an automatic iron core positioning rod installation mechanism. In addition, the iron core is larger to the impact of guide rail when reason piece punching press for guide rail life-span and operational reliability greatly reduced, although design has floating slip microscope carrier to solve this problem, still have higher requirement to the material and the structural strength of guide rail, and make feed mechanism whole more complicated, manufacturing cost improves greatly.
Disclosure of Invention
The invention aims at: the iron core automatic welding machine is capable of automatically completing installation and detachment of the iron core positioning rod in the feeding process, and is higher in automation degree, so that production efficiency is remarkably improved.
The technical scheme of the invention is as follows: the automatic iron core welding machine comprises a workbench provided with welding stations, a welding mechanism and a sheet arranging mechanism which are arranged on the workbench and correspond to the welding stations, and a feeding mechanism which is arranged on the workbench and used for conveying iron cores to the welding stations, and is characterized in that the feeding mechanism is an indexing rotary feeding mechanism and comprises a turntable and an indexing rotary driving device connected with the turntable, a plurality of feeding stations are arranged on the workbench and correspond to the turntable, and the feeding stations and the welding stations are uniformly distributed at intervals according to the indexing angle of the turntable; an iron core supporting cylinder for placing an iron core is arranged on the turntable corresponding to the welding station and each feeding station;
The automatic loading and unloading mechanism for the iron core positioning rods is characterized by further comprising an automatic loading and unloading mechanism for the iron core positioning rods, wherein the automatic loading and unloading mechanism comprises a positioning rod base arranged in each iron core supporting cylinder, a plurality of iron core positioning rods vertically fixed on the positioning rod base, and a positioning rod base lifting driving mechanism corresponding to the iron core supporting cylinders on each feeding station and arranged at the bottom of the workbench; the clamping jaw is connected with the clamping jaw driving device, is driven by the clamping jaw driving device and is opened so as to be matched and locked with the clamping jaw groove arranged on the positioning rod base, and is used for pulling the positioning rod base downwards, the rotary table is provided with holes corresponding to each iron core supporting cylinder, and the workbench is also provided with holes corresponding to the holes on the rotary table for driving the driving seat and the upper driving top plate and the clamping jaw to move up and down.
Further, the invention also comprises a PLC controller which is connected with the jacking device, the indexing rotary driving device, the welding mechanism and the sheet arranging mechanism, wherein the jacking device is provided with three working positions which are controlled by the cooperation of the proximity sensor and the PLC controller, the three working positions are respectively an initial position, a yielding position and an upper jacking position from low to high according to the ejection height of the ejection rod output by the jacking device, the driving seat, the driving top plate and the clamping jaw on the driving seat are positioned below the turntable and do not interfere with the rotation of the turntable, and the jacking device pulls the positioning rod base and the iron core positioning rod on the positioning rod base to retract into an avoidance cavity arranged in the iron core supporting cylinder and does not interfere with the iron core transfer when in the avoidance position; when the iron core is in the upper jacking position, the jacking device drives the positioning rod base to jack and adsorb the positioning rod base at the bottom of the iron core, so that the iron core positioning rod is inserted into the wire slot of the iron core.
Further, the workbench is provided with the sensor bracket beside the iron core supporting cylinder of the feeding station and the iron core detection photoelectric sensor arranged on the sensor bracket, and the iron core detection photoelectric sensor is connected with the PLC and is used for detecting whether an iron core exists on the iron core supporting cylinder of the feeding station.
Furthermore, a positioning rod base lifting guide mechanism is arranged in each iron core supporting cylinder, and comprises a plurality of positioning rod base guide posts vertically fixed on the turntable, and the positioning rod base guide posts are matched with guide sleeves arranged on the positioning rod base.
Further, in the invention, the feeding station is one, and the feeding station and the welding station are distributed at 180 degrees relative to the center of the turntable.
Further, in the invention, the jacking device is an air cylinder or an oil cylinder.
Further, in the invention, the indexing rotary driving device is an electric indexing disc or a pneumatic indexing disc.
Further, the welding mechanism comprises a lifting mechanism and a welding gun tray mechanism arranged on the lifting mechanism, wherein the lifting mechanism comprises a lifting bracket provided with the welding gun tray mechanism and a lifting driving device for driving the lifting bracket to lift, and the lifting driving device is an air cylinder or a hydraulic cylinder or a servo cylinder;
the welding gun disc mechanism is a fixed welding gun disc mechanism and comprises a welding gun disc fixed with the lifting bracket and a plurality of welding guns arranged on the welding gun disc at uniform intervals along the circumference;
Or the welding gun disc mechanism is a rotary welding gun disc mechanism, which comprises an annular mandrel longitudinally fixed on a lifting support, a welding gun disc arranged on the annular mandrel through a bearing sleeve, and a driving motor which is arranged on the lifting support and connected with and drives the welding gun disc to rotate through a transmission mechanism, wherein a plurality of welding guns are uniformly arranged on the welding gun disc at intervals along the circumference, the transmission mechanism is a gear transmission mechanism and comprises an outer gear ring fixedly or integrally arranged on the outer side of the welding gun disc and a horizontal rotary driving gear which is pivoted on the lifting support and meshed with the outer gear ring, the horizontal rotary driving gear is connected with an output shaft of the driving motor, or the transmission mechanism is a synchronous belt transmission mechanism and comprises a driven wheel fixedly or integrally arranged on the outer side of the welding gun disc and a driving wheel pivoted on the lifting support and connected with the driven wheel through a synchronous belt, and the driving wheel is connected with an output shaft of the driving motor, and the driving motor is a servo motor or a stepping motor or a direct current motor; the bearing is a ball bearing or a thrust bearing.
Further, the sheet arranging mechanism is a poking sheet arranging mechanism, the sheet arranging mechanism comprises a pressing mechanism and an upper poking mechanism, the upper poking mechanism comprises a push rod arranged below a workbench corresponding to a welding station and a punch top driving device for driving the push rod to act, and the workbench is provided with a perforation corresponding to the perforation on the turntable and used for the push rod to pass through; the pressing mechanism comprises a pressing guide frame and a pressing driving device for driving the pressing guide frame to act, and a pressing cover for pressing the iron core is arranged on the pressing guide frame; the ejector rod is driven by the ejection driving device to jack up and sequentially jack in the iron core after passing through the perforation on the workbench, the perforation on the turntable and the iron core supporting cylinder to drive the silicon steel sheet of the iron core to bend and arch, and the pressing cover is driven by the pressing driving device to press down against the iron core, so that the silicon steel sheet of the iron core falls back and is leveled; the pressing mechanism further comprises a plurality of pressing guide upright posts vertically fixed on the workbench, and guide sleeves matched with the pressing guide upright posts are arranged on the pressing guide frame.
Furthermore, the workbench is provided with a plurality of stress cushion blocks for supporting the bottom of the turntable corresponding to the welding stations, and the stress cushion blocks are uniformly distributed at intervals around the through holes on the workbench.
The working principle of the invention is as follows:
At the beginning, the iron core that will weld is placed the iron core support section of thick bamboo on the carousel material loading station by manual work or manipulator (when the material loading station is a plurality of, all places the iron core on the iron core support section of thick bamboo of every material loading station), and after the iron core detection photoelectric sensor detected the iron core and put in place, send the signal for the PLC controller, then order about jacking device, indexing rotation drive device, welding mechanism and reason piece mechanism operation under the control of PLC controller and accomplish following steps:
1) The output ejector rod of the jacking device is jacked out from an initial position (namely the lowest position) to drive the driving seat and the driving top plate on the driving seat to jack the positioning rod base to rise, and the positioning rod base stops when the driving seat is jacked up to the upper position, at the moment, the positioning rod base is jacked and adsorbed at the bottom of the iron core, the iron core positioning rod is inserted into the wire slot of the iron core, the installation of the iron core positioning rod is completed, and the iron core is positioned;
2) The output ejector rod of the jacking device is retracted to an initial position (namely a lowest position), the turntable rotates under the drive of the indexing rotation driving device, the positioned iron core is sent to the welding station, the sheet arranging mechanism carries out sheet arranging operation under the control of the PLC, and then the welding mechanism carries out welding operation under the control of the PLC, which are all known technologies and are not described in detail;
3) After the iron cores on the welding stations are welded, the PLC controls the indexing rotary driving device to drive the turntable to rotate, the welded iron cores are screwed to the adjacent feeding stations again, after the iron cores are in place, the jacking devices corresponding to the feeding stations are jacked up again to the jacking positions, the positioning rod base and the iron core positioning rods arranged on the positioning rod base are pulled by the matching of the clamping jaw and the clamping jaw grooves to retract into the avoidance cavity arranged in the iron core supporting cylinder, the iron cores are not interfered to be transferred, and then the welded iron cores are taken out by a manual or mechanical arm to be sent to the next procedure;
4) And (3) placing a new iron core to be welded on the iron core supporting cylinder from which the iron core is taken away on the feeding station by a manual or mechanical arm, and repeating the steps 1) to 3).
When the iron core is initially placed, corresponding marks are made on the iron core and the workbench in advance to ensure that the placement position and angle of the iron core are fixed, so that the iron core positioning rod at the bottom can be vertically and unobstructed inserted into the iron core wire slot.
The invention has the advantages that:
1. According to the automatic iron core welding machine, the automatic iron core positioning rod loading and unloading mechanism is specially designed on the workbench, the iron core positioning rod can be automatically installed and dismantled in the feeding process, the automation degree is very high, the defect of the conventional welding machine in the aspect is overcome, and therefore the production efficiency is remarkably improved.
2. The automatic iron core positioning rod loading and unloading mechanism is carefully designed, the jacking device is adopted to drive the driving top plate and the clamping jaw to alternately finish the jacking and pulling of the positioning rod base, the action is simple and rapid, the positioning rod base is vertically guided by the lifting guide mechanism of the positioning rod base, the action precision of the positioning rod base in the iron core supporting cylinder is further improved, the matching precision of the iron core positioning rod and the iron core wire slot is further ensured, compared with manual operation, the time cost for repeatedly correcting the iron core positioning rod and the iron core wire slot is eliminated, and the working efficiency is greatly improved.
3. Compared with the traditional guide rail sliding type double-station feeding mechanism which is required to be provided with the guide rail and the sliding carrier, the guide rail sliding type double-station feeding mechanism has the advantages that the structure is simple, the problem that the guide rail is easy to be impacted is avoided, the manufacturing cost is saved, the design and the introduction of an automatic iron core positioning rod installing mechanism are particularly facilitated, the automatic iron core positioning rod installing mechanism can be well matched with the automatic iron core positioning rod installing mechanism, and the interference problem of a plurality of mechanisms is avoided.
4. According to the invention, the iron core is placed by arranging the iron core supporting cylinder on the turntable, and the positioning rod base and the iron core positioning rod thereof are formed in the iron core supporting cylinder, wherein the positioning rod base and the iron core positioning rod are contained in the cavity after the cavity is retracted, so that the problem that the iron core positioning rod interferes with the iron core to be taken out is effectively avoided.
5. The invention is convenient for taking and placing the iron core, so the invention can be well connected with a plurality of preposed automatic devices which adopt mechanical arms to convey and place the iron core, thereby further improving the overall production efficiency of the iron core.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
Fig. 3 is a section A-A of fig. 2 (with the ram and ram drive omitted).
Wherein: 1. a work table; 2. an iron core; 3. a turntable; 4. an indexing rotation driving device; 5. an iron core supporting cylinder; 6. a positioning rod base; 6a, clamping jaw grooves; 7. an iron core positioning rod; 8. a jacking device; 8a, outputting a push rod; 8b, jacking the guide rod of the device; 9. a driving seat; 10. driving the top plate; 11. a clamping jaw; 12. opening holes; 13. avoiding the cavity; 14. positioning rod base guide posts; 15. a lifting bracket; 16. a servo cylinder; 17. a welding gun disc; 18. a welding gun; 19. perforating; 20. pressing down the guide frame; 21. a push-down driving device; 22. a gland; 23. pressing down the guide upright post; 24. a stress cushion block; a. an initial bit; b. avoidance of yielding; c. and (5) the upper top position.
Detailed Description
Examples: the specific embodiment of the automatic iron core welding machine provided by the invention is described below with reference to fig. 1-3, and the automatic iron core welding machine is provided with a workbench 1 provided with a welding station, a welding mechanism and a sheet arranging mechanism which are arranged on the workbench 1 corresponding to the welding station, and a feeding mechanism which is arranged on the workbench 1 and used for conveying an iron core 2 to the welding station, and the core improvement of the automatic iron core welding machine is that the feeding mechanism is an indexing rotary feeding mechanism, and an automatic iron core positioning rod loading and unloading mechanism is correspondingly designed.
Referring to fig. 1 to 3, the indexing rotary feeding mechanism of the present invention comprises a turntable 3, a connection turntable 3, an indexing rotary driving device 4, and two core supporting cylinders 5 provided on the turntable 3. The indexing rotation driving device 4 is an electric indexing disc, and the indexing angle is 180 degrees, namely, the indexing rotation driving device rotates 180 degrees each time.
In this embodiment, a feeding station is disposed on the workbench 1 corresponding to the turntable 3, and the feeding station and the welding station are uniformly distributed at intervals according to the indexing angle of the turntable 3, that is, the feeding station and the welding station are distributed 180 degrees about the center of the turntable 3. The turntable 3 is provided with an iron core supporting cylinder 5 for placing the iron core 2 corresponding to the welding station and the feeding station.
Specifically referring to fig. 3, the automatic assembling and disassembling mechanism for the iron core positioning rod is composed of a positioning rod base 6 arranged in each iron core supporting cylinder 5, four iron core positioning rods 7 vertically fixed on the positioning rod base 6, and a positioning rod base lifting driving mechanism arranged at the bottom of the workbench 1 corresponding to the iron core supporting cylinder 5 on the feeding station. The lifting driving mechanism of the positioning rod consists of a jacking device 8, a driving seat 9 fixed on an output ejector rod 8a of the jacking device 8, a driving top plate 10 and a clamping jaw 11 fixed on the driving seat 9, and a clamping jaw driving device connected with the action of driving the clamping jaw 11, wherein the clamping jaw driving device is an air cylinder in the embodiment.
Still as shown in fig. 3, the lifting device 8 in this embodiment is an oil cylinder, and has an output ejector rod 8a, and two lifting device guide rods 8b disposed in parallel on two sides of the output ejector rod 8a, which are lifted and lowered synchronously with the output ejector rod 8 a. The driving top plate 10 is used for pushing the positioning rod base 6 to ascend, and a magnet used for being adsorbed to the bottom of the iron core 2 is arranged on the positioning rod base 6; the clamping jaw 11 is driven by the clamping jaw driving device and is opened so as to be matched and locked with the clamping jaw groove 6a arranged on the positioning rod base 6, the clamping jaw driving device is used for pulling the positioning rod base 6 downwards, an opening 12 is arranged on the turntable 3 corresponding to each iron core supporting cylinder 5, and an opening 12 for driving the driving seat 9 and the upper driving top plate 10 and the clamping jaw 11 to move up and down is also arranged on the workbench 1 corresponding to the opening 12 on the turntable 3, as shown in fig. 3.
In this embodiment, a PLC controller is provided that is connected to the jacking device 8, the indexing rotary driving device 4, the welding mechanism, and the sheet arranging mechanism. The jacking device 8 is provided with three working positions which are controlled by the cooperation of the proximity sensor and the PLC controller, and the three working positions are respectively an initial position, a avoidance position and an upper jacking position according to the ejection height of the jacking device 8 output ejector rod 8a from low to high. For convenience of explanation, three working positions are correspondingly represented on a jacking device guide rod 8b which is synchronously lifted with the output ejector rod 8a, namely an initial position a, a avoidance position b and an upper jacking position c, and the initial position a, the avoidance position b and the upper jacking position c are corresponding to the ejection height of the output ejector rod 8 a.
In the initial position a, the output ejector rod 8a keeps the original height, the driving seat 9 and the driving top plate 10 and the clamping jaw 11 on the driving seat are positioned below the turntable 3, the rotation of the turntable 3 is not interfered, and in the avoidance position b, the jacking device 8 pulls the positioning rod base 6 and the iron core positioning rod 7 on the positioning rod base to retract into the avoidance cavity 13 arranged in the iron core supporting cylinder 5, as shown in fig. 3, the iron core 2 is not interfered to be transferred; in the upper jacking position c, the jacking device 8 drives the positioning rod base 6 to jack and adsorb the positioning rod base at the bottom of the iron core 2, so that the iron core positioning rod 7 is inserted into the wire slot of the iron core 2.
The workbench 1 is provided with a sensor bracket positioned beside the iron core supporting cylinder 5 of the feeding station and an iron core detection photoelectric sensor (omitted in the figure) arranged on the sensor bracket, and the iron core detection photoelectric sensor is connected with the PLC controller and is used for detecting whether the iron core 2 exists on the iron core supporting cylinder 5 of the feeding station.
In order to improve the stability of the vertical lifting movement of the positioning rod base 6, a positioning rod base lifting guide mechanism is arranged in each iron core supporting cylinder 5, and in this embodiment, the positioning rod base lifting guide mechanism is composed of four positioning rod base guide posts 14 vertically fixed on the turntable 3 and guide sleeves arranged on the positioning rod base 6 and matched with the positioning rod base guide posts 14, as shown in fig. 3.
The welding mechanism in this embodiment is composed of a lifting mechanism and a welding gun tray mechanism provided on the lifting mechanism as in the conventional art, and as shown in fig. 1 and 3, the lifting mechanism includes a lifting support 15 provided with the welding gun tray mechanism and a lifting drive device for driving the lifting support 15 to lift. The lifting driving device in the embodiment is a servo cylinder 16 which is symmetrically arranged on two sides of the lifting bracket 15, the servo cylinder is a screw rod driven by a servo motor and a movable block matched with the screw rod through a threaded hole, and the lifting driving device also comprises a bracket provided with a guide rail, and a sliding groove is arranged on the movable block to be matched with the guide rail; the two sides of the lifting bracket 15 are fixed with movable blocks in the corresponding servo cylinders 16. The torch tray mechanism in this embodiment is a fixed torch tray mechanism having a torch tray 17 fixed to the elevating bracket 15 and a plurality of torches 18 provided on the torch tray 17 at regular intervals along the circumference.
In this embodiment, the sheet arranging mechanism is an existing poking sheet arranging mechanism, and the existing poking sheet arranging mechanism is composed of a pressing mechanism and an upper poking mechanism, the upper poking mechanism includes a push rod arranged below the workbench 1 corresponding to the welding station and a punch top driving device (both omitted in fig. 3) for driving the push rod to act, and the workbench 1 is provided with a perforation 19 corresponding to the perforation 12 on the turntable 3 for the push rod to pass through, as shown in fig. 3; the pressing mechanism comprises a pressing guide frame 20 and a pressing driving device 21 for driving the pressing guide frame 20 to act, and a pressing cover 22 for pressing against the iron core is arranged on the pressing guide frame 20. In this embodiment, the pressing driving device 21 is an air cylinder, and the punching driving device is an oil cylinder.
The ejector rod is jacked up under the drive of the jacking driving device and sequentially jacks into the iron core 2to drive the silicon steel sheet of the iron core 2to bend and arch after passing through the perforation 19 on the workbench 1, the perforation 12 on the turntable 3 and the iron core supporting cylinder 5, and the gland 22 is pressed down against the iron core 2 under the drive of the pressing driving device 21, so that the silicon steel sheet of the iron core 2 falls back and is leveled.
As shown in fig. 1 to 3, the pressing mechanism in this embodiment further includes four pressing guide posts 23 vertically fixed on the workbench 1, and guide sleeves matched with the pressing guide posts 23 are disposed on the pressing guide frame 20.
In this embodiment, four force-bearing pads 24 for supporting the bottom of the turntable 3 are disposed on the workbench 1 corresponding to the welding stations, and the force-bearing pads 24 are uniformly spaced around the through holes 19 on the workbench 1, as shown in fig. 3.
The working principle of this embodiment is as follows:
At the beginning, the iron core 2 to be welded is placed on the iron core supporting cylinder 5 on the feeding station of the turntable 3 by a manual or mechanical arm, after the iron core detection photoelectric sensor detects that the iron core 2 is placed in place, a signal is sent to the PLC, and then the jacking device 8, the indexing rotary driving device 4, the welding mechanism and the sheet arranging mechanism are driven to operate under the control of the PLC to finish the following steps:
1) The output ejector rod 8a of the jacking device 8 is jacked out from an initial position a (namely the lowest position), the driving seat 9 and the driving top plate 10 on the driving seat are driven to push the positioning rod base 6 to ascend, and the positioning rod base 6 stops when the jacking position c is up, at the moment, the positioning rod base 6 is jacked and adsorbed at the bottom of the iron core 2, the iron core positioning rod 7 is inserted into a wire slot of the iron core 2, the installation of the iron core positioning rod 7 is completed, and the iron core 2 is positioned;
2) The output ejector rod 8a of the jacking device 8 is retracted to an initial position a (namely a lowest position), the turntable 3 rotates 180 degrees under the drive of the indexing rotary driving device 4, the positioned iron cores 2 are sent to a welding station, a sheet arranging mechanism performs sheet arranging operation under the control of a PLC (programmable logic controller), and then a welding mechanism performs welding operation under the control of the PLC, which are all known technologies and are not described in detail;
3) After the iron cores 2 on the welding station are welded, the PLC controls the indexing rotary driving device 4 to drive the turntable 3 to rotate 180 degrees, the welded iron cores 2 are rewound into the feeding station, after the iron cores 2 are in place, the jacking device 8 corresponding to the feeding station is jacked to the jacking position c again, the positioning rod base 6 and the iron core positioning rod 7 on the positioning rod base are pulled by the matching of the clamping jaw 11 and the clamping jaw groove 6a to retract into the avoidance cavity 13 arranged in the iron core supporting cylinder 5, the iron cores 2 are not interfered to be transferred, and then the welded iron cores 2 are taken out by a manual or mechanical arm to be sent to a next procedure;
4) And (3) for the iron core supporting cylinder 5 from which the iron core 2 is taken away on the feeding station, placing a new iron core 2 to be welded by a manual or mechanical arm, and repeating the steps 1) to 3).
When the iron core 2 is initially placed, the corresponding marks are made on the iron core 2 and the workbench 1 in advance to ensure that the placement position and angle of the iron core 2 are fixed, so that the iron core positioning rod 7 at the bottom can be vertically and unobstructed inserted into the slot of the iron core 2.
The above embodiments are merely for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention to those skilled in the art to understand the present invention and implement the same. All modifications made according to the spirit of the main technical proposal of the invention should be covered in the protection scope of the invention.
Claims (10)
1. The automatic iron core welding machine comprises a workbench (1) provided with welding stations, a welding mechanism and a sheet arranging mechanism which are arranged on the workbench (1) and correspond to the welding stations, and a feeding mechanism which is arranged on the workbench (1) and is used for conveying iron cores (2) to the welding stations, and is characterized in that the feeding mechanism is an indexing rotary feeding mechanism and comprises a turntable (3) and an indexing rotary driving device (4) connected with the turntable (3), a plurality of feeding stations are arranged on the workbench (1) corresponding to the turntable (3), and the feeding stations and the welding stations are uniformly distributed at intervals according to an indexing angle of the turntable (3); an iron core supporting cylinder (5) for placing the iron core (2) is arranged on the turntable (3) corresponding to the welding stations and each feeding station;
The automatic loading and unloading mechanism for the iron core positioning rod comprises a positioning rod base (6) arranged in each iron core supporting cylinder (5), a plurality of iron core positioning rods (7) vertically fixed on the positioning rod base (6), and a positioning rod base lifting driving mechanism which is arranged at the bottom of the workbench (1) and corresponds to the iron core supporting cylinders (5) on each feeding station, wherein the positioning rod lifting driving mechanism comprises a jacking device (8) and a driving seat (9) fixed on an output ejector rod (8 a) of the jacking device (8), a driving top plate (10) and clamping jaws (11) are fixed on the driving seat (9), the driving top plate (10) is used for pushing the positioning rod base (6) to ascend, and a magnet used for being adsorbed to the bottom of the iron core (2) is arranged on the positioning rod base (6); the clamping jaw (11) is connected with the clamping jaw driving device, is driven by the clamping jaw driving device and is opened so as to be matched and locked with a clamping jaw groove (6 a) arranged on the positioning rod base (6), and is used for pulling the positioning rod base (6) downwards, the rotary table (3) is provided with holes (12) corresponding to each iron core supporting cylinder (5), and the workbench (1) is also provided with a driving seat (9) corresponding to the holes (12) on the rotary table (3) and holes (12) for driving the top plate (10) and the clamping jaw (11) to move up and down.
2. The automatic iron core welding machine according to claim 1, further comprising a PLC controller connected with the jacking device (8), the indexing rotary driving device (4), the welding mechanism and the sheet arranging mechanism, wherein the jacking device (8) is provided with three working positions which are controlled by matching of a proximity sensor and the PLC controller, the jacking positions are respectively an initial position, a yielding position and an upper jacking position from low to high according to the jacking height of an output ejector rod (8 a) of the jacking device (8), in the initial position, the driving seat (9) and a driving top plate (10) and a clamping jaw (11) on the driving seat are positioned below the turntable (3), the turntable (3) is not interfered to rotate, and in the yielding position, the jacking device (8) pulls the positioning rod base (6) and an iron core positioning rod (7) on the positioning rod base to retract into a yielding cavity (13) arranged in the iron core supporting cylinder (5), and the iron core (2) is not interfered to transfer; when in upper jacking position, the jacking device (8) drives the positioning rod base (6) to jack and adsorb at the bottom of the iron core (2), so that the iron core positioning rod (7) is inserted into the wire slot of the iron core (2).
3. The automatic iron core welding machine according to claim 2, wherein the workbench (1) is provided with a sensor bracket beside the iron core supporting cylinder (5) of the feeding station and an iron core detection photoelectric sensor arranged on the sensor bracket, and the iron core detection photoelectric sensor is connected with the PLC and is used for detecting whether the iron core (2) exists on the iron core supporting cylinder (5) of the feeding station.
4. An automatic iron core welding machine according to claim 1, characterized in that a positioning rod base lifting guide mechanism is provided in each iron core supporting cylinder (5), which comprises a number of positioning rod base guide posts (14) vertically fixed on the turntable (3), which positioning rod base guide posts (14) cooperate with guide sleeves provided on the positioning rod base (6).
5. The automatic iron core welding machine according to claim 1, characterized in that said feeding station is one and is distributed 180 degrees with respect to the centre of the turntable (3) with respect to the welding station.
6. The automatic iron core welding machine according to claim 1 or 2, characterized in that the jacking device (8) is a cylinder or an oil cylinder.
7. The automatic welder for iron cores according to claim 1 or 2, characterized in that the indexing rotary driving device (4) is an electric indexing disc or a pneumatic indexing disc.
8. The automatic iron core welding machine according to claim 1 or 2, characterized in that the welding mechanism comprises a lifting mechanism and a welding gun tray mechanism arranged on the lifting mechanism, the lifting mechanism comprises a lifting bracket (15) provided with the welding gun tray mechanism and a lifting driving device for driving the lifting bracket (15) to lift, and the lifting driving device is an air cylinder or a hydraulic cylinder or a servo cylinder (16);
The welding gun disc mechanism is a fixed welding gun disc mechanism and comprises a welding gun disc (17) fixed with the lifting bracket (15) and a plurality of welding guns (18) arranged on the welding gun disc (17) at equal intervals along the circumference;
Or the welding gun disc mechanism is a rotary welding gun disc mechanism, which comprises an annular mandrel longitudinally fixed on a lifting bracket (15) and a welding gun disc (17) sleeved on the annular mandrel through a bearing, and further comprises a driving motor which is arranged on the lifting bracket (15) and connected with the welding gun disc (17) through a transmission mechanism and drives the welding gun disc (17) to rotate, a plurality of welding guns (18) are uniformly arranged on the welding gun disc (17) at intervals along the circumference, the transmission mechanism is a gear transmission mechanism and comprises an outer gear ring fixedly or integrally arranged on the outer side of the welding gun disc (17) and a horizontal rotation driving gear which is pivoted on the lifting bracket (15) and meshed with the outer gear ring, the horizontal rotation driving gear is connected with an output shaft of the driving motor, or the transmission mechanism is a synchronous belt transmission mechanism and comprises a driven wheel fixedly or integrally arranged on the outer side of the welding gun disc (17) and a driving wheel which is pivoted on the lifting bracket (15) and connected with the driven wheel through a synchronous belt, and the driving wheel is connected with an output shaft of the driving motor, and the driving motor is a servo motor or a stepping motor or a direct current motor; the bearing is a ball bearing or a thrust bearing.
9. The automatic iron core welding machine according to claim 1 or 2, characterized in that the sheet arranging mechanism is a poking sheet arranging mechanism, the mechanism comprises a pressing mechanism and an upper poking mechanism, the upper poking mechanism comprises a push rod arranged below a workbench (1) corresponding to a welding station and a punch top driving device for driving the push rod to act, and a perforation (19) for the push rod to pass through is arranged on the workbench (1) and corresponds to the opening (12) on a turntable (3); the pressing mechanism comprises a pressing guide frame (20) and a pressing driving device (21) for driving the pressing guide frame (20) to act, and a pressing cover (22) for pressing against the iron core is arranged on the pressing guide frame (20); the ejector rod is lifted upwards under the drive of the top punching driving device and sequentially passes through the perforation (19) on the workbench (1), the perforation (12) on the turntable (3) and the iron core supporting cylinder (5) and then is lifted into the iron core (2) to drive the silicon steel sheet of the iron core (2) to bend and arch, and the gland (22) is downwards pressed against the iron core (2) under the drive of the downwards pressing driving device (21), so that the silicon steel sheet of the iron core (2) falls back and is leveled; the pressing mechanism further comprises a plurality of pressing guide posts (23) vertically fixed on the workbench (1), and guide sleeves matched with the pressing guide posts (23) are arranged on the pressing guide frames (20).
10. An automatic iron core welding machine according to claim 9, characterized in that the table (1) is provided with a number of force-bearing pads (24) for supporting the bottom of the turntable (3) in correspondence of the welding stations, and that these force-bearing pads (24) are evenly spaced around the perforations (19) in the table (1).
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| CN201910172032.2A CN109877491B (en) | 2019-03-07 | 2019-03-07 | Automatic iron core welding machine |
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| CN110202378B (en) * | 2019-07-16 | 2019-12-24 | 珠海市精实测控技术有限公司 | Automatic steel band conveying, winding and welding mechanism |
| CN110560883B (en) * | 2019-09-29 | 2023-09-22 | 淄博斗木机械科技有限公司 | Vertical friction welding machine |
| CN111014999B (en) * | 2019-12-23 | 2021-02-26 | 常州金康精工机械股份有限公司 | Welding machine for flat wire winding in iron core |
| CN113571381B (en) * | 2021-08-23 | 2024-06-21 | 广东沃德精密科技股份有限公司 | Iron stand and hook stranding equipment |
| CN117260094B (en) * | 2023-11-21 | 2024-02-06 | 胜利油田玺润石油工程有限公司 | Jar body continuous welding device |
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