CN209969904U

CN209969904U - Welding feeding mechanism with iron core positioning rod loading and unloading functions

Info

Publication number: CN209969904U
Application number: CN201920290632.4U
Authority: CN
Inventors: 李建安
Original assignee: Conspicuous Automation Science And Technology Ltd Of Kunshan Riamb
Current assignee: Conspicuous Automation Science And Technology Ltd Of Kunshan Riamb
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2020-01-21
Anticipated expiration: 2029-03-07

Abstract

The utility model discloses a welding feeding mechanism with iron core positioning rod loading and unloading function, which is provided with an indexing rotary feeding mechanism on a workbench, wherein the mechanism adopts a turntable to rotate and switch a welding station and a feeding station so as to convey iron cores, and an iron core supporting cylinder for placing the iron cores is arranged on the turntable; meanwhile, an automatic iron core positioning rod loading and unloading mechanism is correspondingly designed, and the mechanism adopts a positioning rod lifting driving mechanism arranged at the bottom of the workbench 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 the iron core positioning rods to enter and exit the iron core wire grooves is realized. And when the iron core positioning rod is inserted into the iron core wire slot, the positioning rod base is provided with a magnet for adsorbing the iron core bottom. The utility model discloses can accomplish the installation of iron core locating lever and demolish automatically at the material loading in-process, degree of automation is higher to show improvement iron core welded production efficiency.

Description

Welding feeding mechanism with iron core positioning rod loading and unloading functions

Technical Field

The utility model relates to a welding feed mechanism with iron core locating lever loading and unloading function.

Background

It is known in the known motor manufacturing industry that stator cores are manufactured by welding and fixing silicon steel sheet laminations, and the function of welding after the laminations is to reduce hysteresis loss and eddy current loss of the motor and prevent the motor from being overheated during operation to cause efficiency reduction and even burning. Many manufacturers currently use commercially available or self-designed specialized welding equipment for the welding of iron cores. 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.

Compare manual work, adopt welding equipment to carry out welded efficiency and precision higher, and some special design's welding set can also realize special welding operation such as "oblique weld", is convenient for control welding track. For example, the applicant manufactured and filed the invention patent (application No. 201610768272.5) a high-precision automatic welding device for silicon steel sheets, which uses an annular welding gun disk to mount a welding gun, and further designs the welding gun disk to be rotatable, uses a driving motor to connect and drive the welding gun disk to move through a transmission mechanism, so that the welding gun disk can make smooth horizontal rotation during operation, and controls the welding gun action on the welding gun disk with high precision so as to implement the 'oblique welding' operation. And when a plurality of welding guns are fixed on the welding gun disk, multi-point oblique welding operation can be synchronously carried out, the operation efficiency and quality are greatly improved, and the customer requirements are better met.

Meanwhile, the sheet arranging mechanism of the welding equipment is designed into a poking type sheet arranging mechanism through special design, a mode that the ejector rod pokes from bottom to top and is matched with the pressing guide frame to press the iron core downwards is adopted, wherein the ejection of the ejector rod drives the silicon steel sheets to be bent and arched, the complex stress in each silicon steel sheet is eliminated, the silicon steel sheets are intensively tensioned and attached, and then rebound, fall and lie under the action of the pressure of the pressing guide frame, the self gravity and the material deformation reset force, and a good sheet arranging effect is obtained. The implementation effect is good, the silicon steel sheets after being arranged can be laminated neatly, the laminating degree is higher, and the subsequent welding quality of the silicon steel sheets is improved to a certain degree.

In addition, this kind of welding set mainly matches guide rail slidingtype duplex position feed mechanism, and it has two slip microscope carriers material loading in turn, and when one of them was located the welding station and carries out the operation, another can pile the silicon steel sheet in advance, has improved work efficiency greatly, and the slip microscope carrier is by translation actuating mechanism control translation, has special route, and the stationarity is good, and the migration distance is short, can prevent effectively that the silicon steel sheet on it from rocking the dislocation, does benefit to improving follow-up welding precision.

Although the welding device has many functions and is convenient to use, research personnel find that the following parts to be improved exist in the feeding mechanism of the welding device through practice based on the concept that the technology is continuously innovated and improved:

1) mounting and dismounting function of coreless positioning rod

As is known, the positioning rods are needed to be adopted for correcting and positioning the iron core before welding, namely, a plurality of vertical positioning rods are inserted into the inner side wire grooves of the iron core, so that the influence on welding precision and quality caused by dislocation and deflection among the silicon steel sheets is prevented, and the positioning rods are needed to be disassembled after welding is finished. However, in the prior art, manual operation is adopted for the installation and the removal of the positioning rod, a worker installs the positioning rod on a tool of the welding device in advance, and then the wire slot on the iron core is correspondingly clamped on the positioning rod in a clamping manner. Because the iron core wire casing is narrower, the locating lever is more, therefore even experienced workman also need spend more time (proofreading iron core locating lever and iron core wire casing repeatedly) and install the operation, later still need implement to demolish, complex operation, greatly reduced welding jobs efficiency.

Just because the locating lever still adopts the manual work to install, cause above-mentioned welding feeding mechanism at present can't with the better linking of a lot of leading automatic equipment that adopt the manipulator to carry and place the iron core, cause the holistic production efficiency of iron core to further improve.

2) The guide rail and the sliding carrying platform are required to be installed, the structure is complex, and the design and the introduction of the automatic installation mechanism of the iron core positioning rod are not facilitated. In addition, the iron core is great to the impact of guide rail during reason piece punching press for guide rail life-span and operational reliability greatly reduced, though the design has floating slip microscope carrier to solve this problem, but still have higher requirement to the material and the structural strength of guide rail, and make feed mechanism wholly more complicated, manufacturing cost improves greatly.

Disclosure of Invention

The utility model discloses the purpose is: the utility model provides a welding feed mechanism with iron core locating lever loading and unloading function, it can accomplish the installation and the demolition of iron core locating lever automatically at the material loading in-process, and degree of automation is higher to show improvement iron core welding production efficiency.

The technical scheme of the utility model is that: a welding feeding mechanism with an iron core positioning rod loading and unloading function comprises a workbench provided with welding stations, and is characterized in that an indexing rotary feeding mechanism is arranged on the workbench and comprises a rotary table and an indexing rotary driving device connected with the rotary table, a plurality of feeding stations are arranged on the workbench corresponding to the rotary table, and the feeding stations and the welding stations are uniformly distributed at intervals according to the indexing angle of the rotary table; iron core supporting cylinders for placing iron cores are arranged on the rotary table corresponding to the welding stations and the feeding stations; 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, wherein the iron core supporting cylinders corresponding to the feeding stations are arranged at the bottom of the workbench; the clamping jaw is connected with the clamping jaw driving device, driven by the clamping jaw driving device and opened so as to be matched and locked with a clamping jaw groove arranged on the positioning rod base, and used for downwards pulling the positioning rod base, the turntable is provided with a hole corresponding to each iron core supporting cylinder, and the workbench is also provided with a hole corresponding to the hole on the turntable for driving the driving seat and the holes for driving the top plate and the clamping jaw to move up and down.

Furthermore, the utility model discloses still include the PLC controller that is connected with jacking device and graduation rotation drive arrangement, the jacking device has three operating position through proximity sensor and PLC controller cooperation control, and they are initial position respectively according to the ejecting height of jacking device output ejector pin from low to high, dodge position and top position, and at initial position, drive seat and the drive roof and the clamping jaw on it all are located the carousel below, do not interfere the carousel rotation, and when dodging the position, the jacking device pulls the iron core locating lever base and the iron core locating lever on it to roll back and enter the cavity of dodging that locates in the iron core support section of thick bamboo, do not interfere the iron core and shift; when the iron core positioning rod is pushed to the upper jacking position, the jacking device drives the positioning rod base to jack and adsorb 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, in the utility model, be equipped with the sensor support that is located the iron core of material loading station and supports a next door on the workstation and locate the iron core on the sensor support and detect photoelectric sensor, this iron core detects photoelectric sensor and links to each other with the PLC controller for whether there is the iron core on detecting the iron core of material loading station supports a section of thick bamboo.

Further, the utility model discloses in be equipped with locating lever base lift guiding mechanism in every iron core support section of thick bamboo, this kind of locating lever base lift guiding mechanism includes a plurality of vertical fixation locating lever base guide posts on the carousel, and these locating lever base guide posts cooperate with the guide pin bushing that sets up on the locating lever base.

Further, the utility model discloses in the material loading station is one, and this material loading station is 180 degrees distributions with the welding station about the carousel center.

Further, in the utility model discloses in the jacking device is cylinder or hydro-cylinder.

Furthermore, in the present invention, the indexing rotary driving device is an electric indexing plate or a pneumatic indexing plate.

It should be noted that, the welding station on the workbench of the present invention is generally used for setting the welding mechanism and the sheet arranging mechanism as in the conventional technology.

The welding mechanism generally comprises a lifting mechanism and a welding gun disk mechanism arranged on the lifting mechanism, the lifting mechanism comprises a lifting support provided with the welding gun disk mechanism and a lifting driving device for driving the lifting support to lift, and the lifting driving device is an air cylinder, a hydraulic cylinder or a servo cylinder; the welding gun disk mechanism is a fixed welding gun disk mechanism and comprises a welding gun disk fixed with the lifting support and a plurality of welding guns which are arranged on the welding gun disk at intervals along the circumference;

or the welding gun disk mechanism can also be a rotary welding gun disk mechanism which comprises an annular central spindle longitudinally fixed on a lifting support, a welding gun disk arranged on the annular central spindle through a bearing sleeve, and a driving motor arranged on the lifting support and connected with the driving mechanism and driving the welding gun disk to rotate, wherein a plurality of welding guns are uniformly arranged on the welding gun disk at intervals along the circumference, the driving mechanism is a gear transmission mechanism and comprises an outer gear ring fixedly or integrally arranged on the outer side of the welding gun disk and a horizontal rotation driving gear which is pivotally arranged on the lifting support and meshed with the outer gear ring, the horizontal rotation driving gear is connected with an output shaft of the driving motor, or the driving mechanism is a synchronous belt transmission mechanism and comprises a driven wheel fixedly or integrally arranged on the outer side of the welding gun disk and a driving wheel which is pivotally arranged on the lifting support and connected with the driven wheel through a synchronous belt, the driving wheel is connected with an output shaft of a driving motor, and the driving motor is a servo motor, a stepping motor or a direct current motor; the bearing is a ball bearing or a thrust bearing.

The sheet arranging mechanism can be an existing poking type sheet arranging mechanism which comprises a pressing mechanism and an upper poking mechanism, the upper poking mechanism comprises an ejector rod arranged below a workbench corresponding to a welding station and a top punching driving device for driving the ejector rod to act, and a through hole for the ejector rod to pass through is formed in the workbench and corresponds to the opening in the rotary table; 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 top punching driving device to jack upwards and sequentially pass through the through hole on the workbench, the opening on the turntable and the iron core supporting cylinder and then jack the iron core to drive the silicon steel sheet of the iron core to be bent and arched, and the gland is driven by the lower pressing driving device to press downwards 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 stand columns vertically fixed on the workbench, and guide sleeves matched with the pressing guide stand columns are arranged on the pressing guide frames.

The working principle of the utility model is as follows:

at the beginning, will treat welded iron core by manual work or manipulator and place the iron core on the carousel material loading station and support a section of thick bamboo (when the material loading station is a plurality of, all place the iron core on the iron core support section of thick bamboo of every material loading station), the iron core detects photoelectric sensor and detects the iron core and places the back that targets in place, signals for the PLC controller, then orders about jacking device and the operation of graduation rotation drive device and accomplish following step under the control of PLC controller:

1) an output ejector rod of the jacking device is ejected from an initial position (namely, the lowest position) to drive the driving seat and a driving top plate on the driving seat to push the positioning rod base to ascend, and the lifting is stopped when the driving seat and the driving top plate on the driving seat ascend to the upper jacking position;

2) an output ejector rod of the jacking device returns to an initial position (namely, the lowest position), the turntable rotates under the driving of the indexing rotation driving device, the positioned iron core is sent to a welding station, the sheet arranging mechanism performs sheet arranging operation under the control of the PLC, and then the welding mechanism performs welding operation under the control of the PLC, which are known technologies and are not detailed;

3) after the iron core on the welding station is welded, the PLC controls the indexing rotation driving device to drive the rotary table to rotate, the welded iron core is rotated to the adjacent feeding station again, after the iron core is in place, the jacking device corresponding to the feeding station is jacked to the jacking position again, the positioning rod base and the iron core positioning rod on the positioning rod base are pulled to retreat into an avoiding cavity arranged in the iron core supporting cylinder through the matching of the clamping jaw and the clamping jaw groove, the iron core transfer is not interfered, and then the welded iron core is taken out and sent to the next process link manually or by a mechanical hand;

4) and (3) placing a new iron core to be welded on the iron core supporting cylinder with the iron core taken away on the feeding station by a worker or a manipulator, and then repeating the steps 1) to 3).

It should be noted that, when the iron core is initially placed, corresponding marks are made on the iron core and the workbench in advance to ensure that the placing position and the angle of the iron core are fixed, so as to ensure that the iron core positioning rod at the bottom can be vertically inserted into the iron core slot without obstruction.

The utility model has the advantages that:

1. the utility model provides a welding feed mechanism with iron core locating lever loading and unloading function, it has designed iron core locating lever automatic handling mechanism specially on the workstation, can accomplish the installation of iron core locating lever and demolish at the material loading in-process is automatic, and degree of automation is very high, has compensatied the not enough of conventional welding machine this aspect to show and improve production efficiency.

2. The utility model provides an iron core locating lever automatic handling mechanism is through elaborate design, it adopts jacking device to drive roof and clamping jaw to accomplish in turn and draw to the top of locating lever base, the action is succinct quick, and the locating lever base carries out perpendicular direction through locating lever base lift guiding mechanism, the action precision of locating lever base in an iron core support section of thick bamboo has further been improved, and then ensure the cooperation precision of iron core locating lever and iron core wire casing, compare manual work, eliminated the time cost of relapse school to iron core locating lever and iron core wire casing, work efficiency is greatly improved.

3. The utility model discloses well adoption graduation rotation type feed mechanism replaces traditional guide rail slidingtype duplex position feed mechanism, compares with the feed mechanism that originally need install guide rail and slip microscope carrier, and not only simple structure has avoided the problem that the guide rail easily receives the impact, has practiced thrift manufacturing cost, is favorable to iron core locating lever automatic installation mechanism's design and introduction moreover, can accomplish fine cooperation with iron core locating lever automatic installation mechanism, avoids a lot of mechanism to interfere the problem.

4. The utility model discloses well adoption sets up the mode that the iron core supported a section of thick bamboo on the carousel and places the iron core, and the inside formation of iron core supported a section of thick bamboo dodges the cavity and holds locating lever base and iron core locating lever after returning back, effectively avoids the iron core locating lever to interfere the problem that the iron core took out.

5. The utility model provides a this kind of feed mechanism is owing to get to put the convenience to getting of iron core, so can carry and place the better linking of leading automatic equipment of iron core with a lot of adoption manipulators to make the holistic degree of automation of iron core and production efficiency further obtain improving.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a schematic view of the overall three-dimensional structure of a welding machine for installing the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a sectional view taken along line a-a of fig. 2 (the ram and ram drive means are omitted).

Wherein: 1. a work table; 2. an iron core; 3. a turntable; 4. an indexing rotary drive device; 5. an iron core support cylinder; 6. a positioning rod base; 6a, a clamping jaw groove; 7. an iron core positioning rod; 8. a jacking device; 8a, outputting a top rod; 8b, a jacking device guide rod; 9. a driving seat; 10. driving the top plate; 11. a clamping jaw; 12. opening a hole; 13. avoiding the cavity; 14. a positioning rod base guide post; 15. a lifting support; 16. a servo cylinder; 17. welding a torch plate; 18. a welding gun; 19. perforating; 20. pressing down the guide frame; 21. a push-down drive; 22. a gland; 23. pressing down the guide upright post; 24. a stressed cushion block; a. an initial position; b. avoidance positions; c. and (4) a top position.

Detailed Description

The utility model provides a welding machine complete machine, like conventional technology, it has workstation 1 that sets up welding station, corresponds welding station setting welding mechanism and reason piece mechanism on workstation 1 and locates the feed mechanism that is used for carrying iron core 2 to welding station on workstation 1, the utility model discloses the core improvement to feed mechanism lies in setting up the graduation rotation type feed mechanism on workstation 1 to iron core locating lever automatic loading and unloading mechanism has correspondingly been designed.

Referring to fig. 1 ~ and fig. 3, the indexing rotary feeding mechanism of the present invention comprises a rotary plate 3, a connection rotary plate 3, an indexing rotary driving device 4, and two iron core supporting cylinders 5 disposed on the rotary plate 3, wherein the indexing rotary driving device 4 is an electric indexing plate, and the indexing angle is 180 degrees, i.e. the indexing rotary mechanism rotates 180 degrees in each movement.

In this embodiment, the work table 1 is provided with a feeding station corresponding to the rotary table 3, and the feeding station and the welding station are uniformly distributed at intervals together according to the indexing angle of the rotary table 3, that is, the feeding station and the welding station are distributed at 180 degrees with respect to the center of the rotary table 3. The iron core supporting cylinder 5 used for placing the iron core 2 is arranged on the rotary table 3 corresponding to the welding station and the feeding station respectively.

Specifically, as shown in fig. 3, the iron core positioning rod automatic loading and unloading mechanism 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 working table 1 corresponding to the iron core supporting cylinder 5 on the feeding station. The positioning rod lifting driving mechanism is composed 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 driving clamping jaw 11 for action, wherein the clamping jaw driving device is an air cylinder in the embodiment.

As shown in fig. 3, the lifting device 8 in this embodiment is an oil cylinder, and has an output rod 8a, and two lifting device guide rods 8b arranged in parallel on both sides of the output rod 8a, which are lifted synchronously with the output rod 8 a. The driving top plate 10 is used for pushing the positioning rod base 6 to ascend, and the positioning rod base 6 is provided with a magnet which is adsorbed to the bottom of the iron core 2; the clamping jaws 11 are driven by the clamping jaw driving device and opened so as to be matched and locked with the clamping jaw grooves 6a arranged on the positioning rod base 6, and used for pulling the positioning rod base 6 downwards, the rotary table 3 is provided with an opening 12 corresponding to each iron core supporting cylinder 5, and the workbench 1 is also provided with an opening 12 corresponding to the opening 12 on the rotary table 3 and used for driving the driving seat 9 and the upper driving top plate 10 and the clamping jaws 11 to move up and down, as shown in fig. 3.

The PLC controller connected with the jacking device 8, the indexing rotary driving device 4, the welding mechanism and the sheet arranging mechanism is arranged in the embodiment. The jacking device 8 is provided with three working positions which are controlled by the matching of the proximity sensor and the PLC, and the three working positions are respectively an initial position, an avoidance position and an upper jacking position according to the jacking height of the output ejector rod 8a of the jacking device 8 from low to high. For convenience of explanation, three working positions are correspondingly shown on the guide rod 8b of the jacking device which is synchronously lifted with the output ejector rod 8a, namely an initial position a, an avoiding position b and an upper jacking position c, which correspond 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, the driving top plate 10 and the clamping jaw 11 on the driving seat are both positioned below the rotary table 3 and do not interfere with the rotation of the rotary table 3, 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 retreat into an avoidance cavity 13 arranged in the iron core supporting cylinder 5, and as shown in fig. 3, the iron core 2 is not interfered to transfer; when the upper jacking position c is reached, 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.

The iron core that is equipped with on workstation 1 and is located the iron core support section of thick bamboo 5 next door of material loading station detects photoelectric sensor (omit in the figure) with locating on the sensor support, and this iron core detects that photoelectric sensor links to each other with the PLC controller for whether have iron core 2 on detecting the iron core support section of thick bamboo 5 of material loading 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 provided in each iron core support 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 rotary table 3 and a guide sleeve arranged on the positioning rod base 6 and matched with the positioning rod base guide posts 14, as shown in fig. 3.

In this embodiment, the welding mechanism is composed of a lifting mechanism and a welding torch disk mechanism arranged on the lifting mechanism, as in the conventional technology, and as shown in fig. 1 and 3, the lifting mechanism includes a lifting support 15 provided with the welding torch disk mechanism and a lifting driving device for driving the lifting support 15 to lift. The lifting driving device in the embodiment is a servo cylinder 16, and the two lifting driving devices are symmetrically arranged on two sides of a lifting support 15, the servo cylinder is characterized in that the servo cylinder is a conventional technology, and the lifting driving device comprises a screw rod driven by a servo motor, a movable block matched with the screw rod through a threaded hole, and a support provided with a guide rail, wherein a sliding groove is arranged on the movable block and matched with the guide rail; the two sides of the lifting bracket 15 are fixed with the movable blocks in the corresponding servo cylinders 16. The welding gun disk mechanism in this embodiment is a fixed welding gun disk mechanism, and includes a welding gun disk 17 fixed to the lifting bracket 15 and a plurality of welding guns 18 disposed on the welding gun disk 17 at regular intervals along the circumference.

In the embodiment, the sheet arranging mechanism is an existing poking type sheet arranging mechanism, the mechanism consists of a pressing mechanism and an upper poking mechanism, the upper poking mechanism comprises an ejector rod arranged below the workbench 1 corresponding to a welding station and a top punching driving device (omitted in fig. 3) for driving the ejector rod to act, and the workbench 1 is provided with a through hole 19 corresponding to the opening 12 on the turntable 3 and allowing the ejector 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 the iron core is arranged on the pressing guide frame 20. In this embodiment, the push-down driving device 21 is a cylinder, and the push-up driving device is a cylinder.

The ejector rod is driven by the top punching driving device to jack upwards and sequentially pass through the through hole 19 on the workbench 1, the opening 12 on the turntable 3 and the iron core supporting cylinder 5 to jack the iron core 2 to drive the silicon steel sheet of the iron core 2 to be bent and arched, and the gland 22 is driven by the bottom pressing driving device 21 to press downwards against the iron core 2, so that the silicon steel sheet of the iron core 2 falls back and is leveled.

As shown in fig. 1 ~ and fig. 3, the pressing mechanism in this embodiment further includes four pressing guide pillars 23 vertically fixed on the working platform 1, and the pressing guide frame 20 is provided with guide sleeves engaged with the pressing guide pillars 23.

In this embodiment, four stressed pads 24 for supporting the bottom of the turntable 3 are disposed on the workbench 1 corresponding to the welding station, and the stressed pads 24 are uniformly distributed around the through hole 19 on the turntable 3 at intervals, as shown in fig. 3.

The working principle of the embodiment is as follows:

at the beginning, will treat welded iron core 2 by manual work or manipulator and place 3 iron core support section of thick bamboo 5 on the material loading station of carousel, the iron core detects that photoelectric sensor detects iron core 2 and places the back that targets in place, signals for the PLC controller, then orders about jacking device 8, graduation rotary drive device 4, welding mechanism and reason piece mechanism operation under the control of PLC controller and accomplishes following step:

1) an output ejector rod 8a of the jacking device 8 is jacked out from an initial position a (namely the lowest position), drives the driving seat 9 and a driving top plate 10 on the driving seat to push the positioning rod base 6 to ascend, and stops when reaching a jacking position c, 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) an output ejector rod 8a of the jacking device 8 backs to an initial position a (namely, the lowest position), the rotary table 3 rotates 180 degrees under the driving of the indexing rotation driving device 4, the positioned iron core 2 is sent to a welding station, the sheet arranging mechanism performs sheet arranging operation under the control of the PLC, and then the welding mechanism performs welding operation under the control of the PLC, which are known technologies and are not detailed;

3) after the iron core 2 on the welding station is welded, the PLC controller controls the indexing rotation driving device 4 to drive the rotary table 3 to rotate 180 degrees, the welded iron core 2 is rotated back to the feeding station again, after the iron core 2 is in place, the jacking device 8 corresponding to the feeding station is jacked out again to the jacking position c, the positioning rod base 6 and the iron core positioning rod 7 on the positioning rod base are pulled to retreat into an avoiding cavity 13 arranged in the iron core supporting cylinder 5 through the matching of the clamping jaw 11 and the clamping jaw groove 6a, the transfer of the iron core 2 is not interfered, and then the welded iron core 2 is taken out by manpower or a mechanical arm and sent to the next process link;

4) and (3) placing a new iron core 2 to be welded on the iron core supporting cylinder 5 with the iron core 2 taken away in the feeding station by a worker or a manipulator, and then repeating the steps 1) to 3).

It should be noted that, when the iron core 2 is initially placed, corresponding marks are made on the iron core 2 and the workbench 1 in advance to ensure that the placing position and the angle of the iron core 2 are constant, so as to ensure that the iron core positioning rod 7 at the bottom can be vertically inserted into the slot of the iron core 2 without obstruction.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A welding feeding mechanism with an iron core positioning rod loading and unloading function comprises a workbench (1) provided with welding stations, and is characterized in that an indexing rotary feeding mechanism is arranged on the workbench (1), the mechanism 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 the indexing angle of the turntable (3); iron core supporting cylinders (5) for placing the iron cores (2) are arranged on the rotary table (3) corresponding to the welding stations and the feeding stations; the iron core positioning rod automatic loading and unloading mechanism comprises a positioning rod base (6) arranged in each iron core supporting cylinder (5) and a plurality of iron core positioning rods (7) vertically fixed on the positioning rod base (6), and positioning rod base lifting driving mechanisms corresponding to the iron core supporting cylinders (5) on each feeding station and arranged at the bottom of a workbench (1), wherein each 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 a clamping jaw (11) are fixed on each driving seat (9), the driving top plate (10) is used for jacking the positioning rod base (6) to ascend, and magnets used for being adsorbed to the bottoms of the iron cores (2) are arranged on the positioning rod base (6); and clamping jaw (11) link to each other with clamping jaw drive arrangement, drive and open by clamping jaw drive arrangement so that with clamping jaw groove (6 a) cooperation locking of setting on locating lever base (6), be used for pulling locating lever base (6) downwards, correspond every iron core support section of thick bamboo (5) on carousel (3) and all be equipped with trompil (12), and also be equipped with on workstation (1) and supply drive seat (9) and last drive roof (10) and clamping jaw (11) trompil (12) of activity from top to bottom with trompil (12) on carousel (3).

2. The welding feeding mechanism with the iron core positioning rod loading and unloading function according to claim 1, characterized by further comprising a PLC controller connected with the jacking device (8) and the indexing rotation driving device (4), wherein the jacking device (8) has three working positions controlled by a proximity sensor and the PLC controller in a matching manner, the three working positions are respectively an initial position, a avoidance position and an upper jacking position according to the ejection height of the output ejector rod (8 a) of the jacking device (8), the driving seat (9) and the driving top plate (10) and the clamping jaw (11) thereon are both positioned below the rotary table (3) and do not interfere with the rotation of the rotary table (3) in the initial position, the jacking device (8) pulls the positioning rod base (6) and the iron core positioning rod (7) thereon to retreat into an avoidance cavity (13) arranged in the iron core supporting cylinder (5) in the avoidance position, the iron core (2) transfer is not interfered; when the iron core positioning rod is pushed up, the jacking device (8) drives the positioning rod base (6) to be pushed up and attached to the bottom of the iron core (2), so that the iron core positioning rod (7) is inserted into a wire slot of the iron core (2).

3. The welding feeding mechanism with the iron core positioning rod loading and unloading function according to claim 2, wherein the workbench (1) is provided with a sensor support located beside the iron core supporting cylinder (5) of the feeding station and an iron core detection photoelectric sensor arranged on the sensor support, and the iron core detection photoelectric sensor is connected with the PLC controller and used for detecting whether the iron core (2) is on the iron core supporting cylinder (5) of the feeding station.

4. The welding feeding mechanism with iron core positioning rod loading and unloading functions as claimed in claim 1, wherein each iron core supporting cylinder (5) is provided with a positioning rod base lifting guide mechanism, the positioning rod base lifting guide mechanism comprises a plurality of positioning rod base guide posts (14) vertically fixed on the rotary table (3), and the positioning rod base guide posts (14) are matched with guide sleeves arranged on the positioning rod base (6).

5. The welding and feeding mechanism with the iron core positioning rod loading and unloading function according to claim 1, wherein the number of the feeding stations is one, and the feeding stations and the welding stations are distributed at 180 degrees with respect to the center of the turntable (3).

6. The welding feeding mechanism with iron core positioning rod assembling and disassembling function according to claim 1 or 2, characterized in that the jacking device (8) is a cylinder or an oil cylinder.

7. The welding and feeding mechanism with the iron core positioning rod assembling and disassembling function 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.