JPS5921688B2 - Product accumulation and extraction device in notching machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a product accumulating and discharging device in a Notch Sogupfus.

Conventional notching machines are used to punch out slots in iron cores of rotating electric machines, and a plank with a keyway and shaft ratio for the shaft simultaneously punched in the center is inserted into a mandrel shaped to correspond to the shaft hole and keyway. The mandrel is rotated intermittently, and the stator core slot and the rotor core slot are respectively bored by a notching machine.

In this case, the improved notching system has already been introduced.
What is shown in the figure has been proposed by the applicant.

In this case, the conveyance device 1 has six conveyance sections 1a that protrude radially every 600 degrees from the vertical axis, and each conveyance section 1a includes a rotor suction section 2a and a stator suction section 2b. Station A is a blank accumulation section, in which a plurality of mandrels are provided at appropriate pitches on the same circumference on a rotary table, and blanks 3 to be punched with slots are accumulated on each mandrel in advance. Each time the upper blank 3 is depleted, the next mandrel is indexed and rotated to the removal position. At this station A, suction parts 2a and 2b
The plank 3 is adsorbed by the vC and the conveyance device 1 is indexed and rotated, and then this plank 3 is conveyed to station B, the conveyance device 1 is stopped, and here Then, the plank 3 is gripped again with the key grooves aligned in a predetermined positional relationship, and the plank 3 with the key grooves corrected is transferred to the station C by the next indexing rotation of the conveying device 1. At this station C, the blank 3 is rotated by a notching machine 4 while individual slots are punched out one after another. In this case, in particular, the slot punching of the stator core and the separation of the rotor blank are simultaneously performed by the notching machine 4. Then, the stator core plate with the punched slot and the separated rotor blank are simultaneously attracted to the suction parts 2a and 2b of the conveying part 1a and transferred to station D, where the stator core plate (product) is accumulated. The completed stator core plates are sequentially stacked on the mandrel provided here, and the rotor plank 3a is supported by the rotor suction part 2a of the transport device 1 to move to the next station EVC.
will be migrated. Seventh, at the station E, rotor slots are sequentially punched out in the rotor plank 3a using the notching machine 5 with reference to the keyway and the shaft hole. The rotor core plates from which the slots have been punched are sequentially indexed and rotated by mandrels provided on the same circumference at appropriate pitches on the turntable 6 of the next station Vc. FIG. 2 shows a side view of FIG. 1. A product with rotor slots punched out is attracted to a rotor suction section 2a provided at the lower part of the conveyance section 1a of the conveyance device 1, and is released and attached to the mandrel. The figure posted on page 11 is shown. In this case, two mandrels 11 are provided, and while a predetermined core plate is being removed from the mandrel 11 on the extraction side by rotating the turntable 6 180 degrees as described above, the notching operation is performed by the notching machine 5. It can be carried out.
Figure 3 shows a core plank in which a clamp bar insertion groove 3b for tightening during core stacking is punched out along with a keyway 3c and a shaft hole 3d at the stage of forming the blank 3. A slot 3e for the stator core is punched out and a slot 3e for the rotor is punched in the core plank. A diagram showing that the plank 3a is being separated and processed at the same time is shown, and FIG. 4 is a perspective view in which only the stator core plate is separated.

In the stator core plate (product) accumulating device of the proposed notching station explained above, the fixed 1
Stator core plates with slots punched out in sequence are dropped into a stacking device consisting of a book mandrel from the suction section 2b of the conveying device 1. At this time, first, the distance from the suction section 2b to the seating position of the mandrel is determined to be in the stacked state. If the falling distance is long, it may get stuck on the mandrel on the way to the seating position and damage the slot inside the core plate, or the notching machine must be stopped and a new pile must be placed once the stacking is completed. I had to replace it with an empty mandrel.

In particular, in the case of a stator core plate, the outer diameter is larger than that of a rotor core plate, which tends to be undesirable in the case of a turntable because it intersects with adjacent stations, severely limiting its range of use. The present invention eliminates all of the above-mentioned drawbacks, and one embodiment of the present invention will be described in detail below with reference to the drawings.

5 and 6 are longitudinal sectional views and FIG. 7 is a plan view of the product accumulation and take-out device according to the present invention. As shown in FIG. 5, the stator core plate and the rotor blank 3a are attracted to the lower surfaces of the suction parts 2a and 2b of the conveying part 1a, which rotate intermittently in conjunction with the operation of a notching machine (not shown), and the stator core plate and the rotor blank 3a are adsorbed in advance. At the previous station, slot punching of the stator core plate and separation of the rotor blank 3a are performed, and only the stator core plate that has been sucked is dropped onto the mandrel 15rc directly above it. The mandrel 15 is vertically installed as shown in the figure, and a movable plate 16 is mounted on the same circumference around the mandrel 15 at equal pitches using four feed screws 17 to tighten the nuts 16 so as to be able to move up and down along the mandrel 15.
It is supported through b. Therefore, the movable plate 16 is rotated as appropriate by driving a chain 20 for a sprocket wheel 19 provided at the lower end of each feed screw 17 together with a core plate receiving plate 18 by an electric motor 21 with a brake via a speed reduction mechanism 22. By rotating the respective feed screws 17 in the normal and reverse directions, the level of falling from the suction parts 2a and 2b can be optimized. That is, if the fall level is greater than the set value, the movable plate 1 is moved up to the maximum set value with respect to the fixed plate 16a.
6 is raised, and when the falling level falls below the set range, the moving plate 16 is lowered by the feed screw 17 to adjust the falling level to the maximum set value. In this way, the falling level is adjusted optimally, so that the stator core plate is not caught on the mandrel 15 and is reliably accumulated on the mandrel 15, damaging the inner diameter part of the slot of the stator core plate that contacts the outer periphery of the mandrel 15. There is no fear that this will happen. Also mandrel 1
5 is configured to be movable via a spindle 23 by an electric motor 22 so that it can be positioned at the highest and lowest positions, and when the mandrel 15 reaches the lowest position, the upper end of the mandrel 15 is movable as shown in FIG. The plate 16 is pulled in to the lower end.
In this figure, a predetermined amount of stator core plates are accumulated on a mandrel, and a core plate receiving plate 1 that receives the stator core plates.
8 shows a state in which the movable plate 16 has been moved from the mandrel 15 to the take-out position. This is carried out by means of a transfer table 24 which has two feed pins 24a, 24a on its upper surface. That is, both ends of the chain 25 are fixed to the transfer table 24,
When this chain 25 is driven once by the electric motor 27 via the sprocket wheel 26, the transfer table 24 moves to the guide bar 24.
It moves from the left end to the right end along b. Therefore, the core plate receiving plate 18 is pushed by the feeding pin 24a on the movable plate 16 and moved to the right by the needle bearing 28VC,
Take-out position Vc. The locking pin 29 enters the positioning hole 18a, and the products are set on the core plate receiving plate 18 while being reliably stacked. The transfer table 24 is then returned to its original position on the left, and a new core plate receiving plate 18 is set on the movable plate 16. 31 indicates a needle bearing for improving sliding properties when the product is further transferred on the take-out table.

In the above-mentioned product accumulating and unloading device of the notching machine according to the present invention, the mandrel that guides the inside of the core plate escapes below the core plate receiving plate at the lowest position. It becomes easier to take out the laminated product,
Also, it is not necessary to stop the notching process during this time.

Furthermore, since the core plate receiving plate can be adjusted up and down according to the laminated state of the core plate, the falling level of the core plate can be optimized and minimized, avoiding situations such as damage to the inside of the slot part or getting stuck to the mandrel. can.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the notching system proposed by the applicant, Fig. 2 is a partial side view thereof, and Fig. 3 is a plan view of the processing state in which the rotor blank is separated while punching out the stator slots. FIG. 4 is a perspective view of a stator core plate, FIGS. 5 to 7 show a product accumulation/unloading device for a notching machine according to the present invention, FIG. 5 is a schematic longitudinal sectional view, and FIG. 6 is a detailed longitudinal sectional view. FIG. 7 shows a floor plan. Figure Vc died, 15 is a mandrel, 16 is a movable plate, 18
indicates a core plate receiving device, and 24a and 24 indicate a transfer device.

Claims (1)

[Claims] 1 A product accumulation station of a notching processing device that uses a plurality of stations to transport core blanks to each station in synchronization with the notching cycle is equipped with a mandrel that guides the inner diameter of the core plate and can be moved up and down, and a mandrel that can move up and down and a core plate receiving plate for receiving a core plate; a driving device for moving the upper end of the mandrel to the lower end of the core plate receiving plate when a predetermined core plate is stacked on the core plate receiving plate; It consists of an integrated device consisting of a movable plate on which a plate receiving plate is placed, and a drive device that moves this movable plate up and down so that the falling level of the core plate falling onto the core plate receiving plate can be adjusted. An accumulating device is provided directly below the falling core plates, and a transition device is provided for moving only the core plate receiving plate on which the core plates are accumulated from the lowest position of the product accumulating station to the take-out position of the accumulating device. A product accumulation/takeout device for a notching machine, characterized in that: