JPS5837945Y2 - Rotating table type induction hardening equipment - Google Patents

Description

[Detailed description of the invention] This invention is an apparatus for induction hardening relatively small items using a rotary table, and more specifically, the invention is an apparatus for induction hardening relatively small items using a rotary table. The present invention relates to a device that effectively performs the above-mentioned discharge using compressed air as a medium in a device that continuously performs discharge for each radial range of a rotary table.

Conventionally, an induction hardening apparatus that processes the workpiece by dividing the steps of loading, heating, cooling, and discharging the workpiece within a suitable radial range of a rotary table will be explained with reference to FIGS. 1 and 2. On the target rotary table, the loading zone X of item A is placed in the circumferential direction.

A high-frequency heating zone Y, a cooling zone Z, and a discharge zone W are provided separately for each radial range.
is held on a table 1 while rotating by a jig 2 as shown in FIG.

Each of the above steps is carried out in a time-limited manner under the intermittent rotational movement of the table 1. In particular, the mechanism of the discharge zone W is such that, as shown in FIG. It descends, chucks the item a, pulls it out from the jig 2, raises it, and discharges it outside the system, and then performs the same operation again on the follow-up item a that has arrived at the zone W.

In this way, in the known device, the table rotates intermittently, and each zone X.

Since Y, Z, and W also adopted a mechanism corresponding to this, there was one thing lacking in mass production processability.

This invention uses compressed air as a medium to simultaneously discharge multiple items at a time by devising the ejecting device of the above-mentioned device, and also allows this ejecting operation to be carried out automatically and synchronously with the continuous rotation of the table. This is how it was done.

This will be explained in detail below with reference to FIGS. 3 and 4. FIG. 3 is a perspective view of the invented device, and FIG. 4 is an enlarged explanatory view of the discharge device including the air nozzle.

This invention provides a loading zone X, a high-frequency heating zone Y, a cooling zone Z, and a discharge zone W for the item a in a suitable radial range, so that each item a can be stored separately in each zone. In an induction hardening apparatus using a rotary table 1 which is held under rotation by a jig 2, a follow-up disk 4 is mounted on a bearing 5 on a drive shaft 3 of the rotary table 1.
A plurality of products vOa... are mounted coaxially through the disk 4 at a portion corresponding to the discharge zone W, and compressed air is supplied from the bottom of each jig 2... An air nozzle 6 for discharging air upwardly is provided so as to contact the discharge zone W of the table 1 from below, and a fixed shaft 7 parallel to the drive shaft 3 is provided on the side of the table 1 and the follower disk 4. An intermittent rotating body 10 having a claw cam 8 and a fork 9 is rotatably mounted on the fixed shaft 7, the fork 9 is engaged with the pin 11 of the disk 4, and the claw cam 8 is connected to the table 1. This is a rotary table type induction hardening device which has a return spring mechanism 13 attached to the disk 4 and rotary stoppers 141, 14 provided on the lower surface and sides of the disk 4.

In the figure, M indicates a motor connected to the drive shaft 3, and 15 indicates an air supply pipe to the air nozzle 6.

Moreover, above this air nozzle 6, as shown in FIG. 4, there is an article a...
A reflector 16 is provided to receive and reflect the product a...
Although a device that causes the items a to fall into the storage box 18 through the chute 17 is shown as the ejecting device, it is possible to collect the items a... ejected by means other than the reflector 16 and the chute 17. It is also possible to do so.

The compressed air supplied to the air nozzle 6 is fed to the follower disk 4.
It is supplied for a limited time while the valve is rotating intermittently, but at other times the supply is stopped by the valve means 19.

The return spring mechanism 13 shown in the figure is an example in which a coil spring 132 is stretched between a rod 130 fixed to the side of the desk 4 and a rod 131 projecting downward from the desk 4.

A plurality of pins 12 are protruded at regular intervals in the circumferential direction of the table 1.

Since this invention has the above-described configuration, during continuous rotation of the rotary table 1, until the pin 12 comes into contact with the claw cam 8,
The follow-up tooth 4 is fixed by the fork 11 and does not rotate, but when the pin 12 comes into contact with the claw cam 8, it follows it in the rotational direction until the pin 12 and the claw cam 8 are disengaged from each other. Continue.

The intermittent rotating body 10 rotates within a certain radial range, and the pin 11 held by the fork 9 causes the follower disk 4 to follow the intermittent rotation of the rotating body 10.

During the period from the start to the end of the intermittent rotation of the disk 4, compressed air is ejected from the air nozzle 6 for a limited period of time, and the plurality of items a that have arrived at the discharge zone W are simultaneously removed from each jig 2. The item a is separated and ejected upward and collides with the reflector 16, and the reflected item is sent to the chute 1.
7 to collect them and drop them into the storage box 18.

After the above-mentioned intermittent rotation ends, the follower disk 4 maintains the engagement relationship between the fork 9 and the pin 11 by the return spring mechanism 13. It quickly returns to the original position, but at this time the stopper 141.14 is activated. To prevent the disk 4 from overrunning.

In this way, the follow-up disk 4 and the rotating body 10 are stopped until the next pin 12 comes into contact with the claw 8 again. However, the pins 12 in the circumferential direction of the rotary table 1... Intermittent rotational movement is made a number of times corresponding to the number of times.

It goes without saying that the timing of the contact between the pin 12 and the claw 8 is synchronized with the timing when the cooled item a arrives at the discharge zone W.

In addition, in the carry-in zone
・It is a device that carries in, heats, and cools multiple pieces at the same time.

As described above, this invention is based on the fact that the intermittent rotating body 10 intermittently rotates the follow-up disk 4 within a certain radial range for each revolution of the continuously rotating table 1, and during this period it stands in the discharge zone W on the table 1. Table 1
Combined with the shortening of the processing cycle due to the continuous rotation of the table, this feature significantly improves productivity compared to conventional tables that rotate intermittently and can only eject individual items. You can get more profit.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of a known device, Fig. 2 is an enlarged vertical sectional view of the main part showing the ejection mechanism in the same device, Fig. 3 is a perspective view of the devised device, and Fig. 4 is the ejection device including the air nozzle. It is an enlarged view of. Explanation of symbols 1...Rotary table, a...
・・Goods, X・・・・ Delivery zone, Y・・・・・
Heating zone, Z... Cooling zone, W...
・Discharge zone, 2... Jig, 3... Drive shaft, 4... Follow-up disk, 5...
Bearing, 6...Air nozzle, 7...Fixed shaft, 8...Claw cam, 9...Fork,
10... Intermittently rotating body, 11.12...
Pin, 13... Return spring mechanism, 141.14.
...Rotation stopper.

Claims (1)

[Scope of utility model registration request] A carry-in zone X, a high-frequency heating zone Y, a cooling zone Z, and a discharge zone W for the article a are divided into appropriate radial ranges, and each article a is placed in each jig 2 in each zone. In an induction hardening apparatus using a rotary table 1 which is held under rotation by A plurality of items a... are placed in each jig 2... in a portion corresponding to the discharge zone W of the
An air nozzle 6 for discharging compressed air upward from the lower side is provided below in the unloading zone W of the table 1, and on the other hand, the drive shaft is installed on the side of the table 1 and the follower disk 4. 3 is provided with a fixed shaft 7 parallel to the fixed shaft 7, and an intermittent rotary body 10 having a pawl cam 8 and a fork 9 is rotatably mounted on this fixed shaft 7, and the fork 9 is engaged with the pin 11 of the tee disk 4. In addition, the claw cam 8 is locked to a pin 12 of the table 1, and a return spring mechanism 13 is attached to the disk 4, and a rotation stopper 14 is provided on the side of the disk 4. Device.