JPH05272Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] <Industrial Application Field> The present invention relates to a device for setting a filter in a molten metal passage of a mold for casting.

<Prior Art> In casting, a filter is inserted at an appropriate position within the mold in order to remove impurities from the molten metal and at the same time adjust the flow of the molten metal.

As is well known, casting work involves a high-temperature environment, so it is not desirable to rely on manual labor for the above-mentioned filter insertion work. A filter insertion device has been proposed in which a receiving device is provided with a filter insertion device, and a filter is attached to a sprue portion at the same time as the molded product released from the mold is taken out when the mold is opened.

<Problems to be solved by the invention> However, while the above-mentioned known device does not require an increase in equipment space, it is difficult to insert a lightweight filter into a device that handles a relatively large amount of weight for receiving products. Since it is necessary to provide relatively delicate handling properties in order to perform this, it is difficult to control the operating force, and it is conceivable that the manufacturing of the device will be rather complicated.

Furthermore, in the case of a highly deformable member such as a wire mesh, handling is not so much of a problem, but when handling a member that is easily damaged such as a ceramic filter, even more stable control of the operating force is required.

Based on this viewpoint, the main object of the present invention is to provide a filter setting device for a casting machine that is improved so that an appropriate operating force can be easily set.

[Structure of the invention] <Means for solving the problem> According to the present invention, the object is to provide a device for setting a filter in a molten metal passage of a mold for casting, and a means for holding the filter. and a means for pushing out the filter toward a filter mounting portion recessed in the mold, wherein the means for pushing out the filter includes a pushing member that comes into contact with the filter, and a driving means that applies a thrust to the pushing member. This is achieved by providing a filter setting device for a casting machine, characterized in that it comprises: and a spring means that connects the extrusion member and the drive means so that they can be moved relative to each other.

<Operation> With this arrangement, only the elastic force of the spring means acts as the substantial force for pushing out the filter.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a casting apparatus to which the present invention is applied. This casting device includes a mold clamping device 1, a fixed platen 2 fixed to the machine frame F, and a plurality of tie bars 3 fixed to the fixed platen 2 and extending in the horizontal direction.
and a movable platen 4 provided so as to be slidable along the tie bar 3. A pair of mating molds 5a and 5b are attached to the inner surfaces of the fixed platen 2 and the movable platen 4, which face each other.
By moving the movable platen 4 toward and away from the stationary platen 2 using the movable platen 2, the molds 5a and 5b can be aligned and opened.

One of the tie bars 3 is provided with a filter setting device 6, which is a device of the present invention. As shown in FIG. 2, this filter setting device 6 includes an arm 7 rotatably supported by a tie bar 3 and a filter clamp device 8 fixed to the free end of the arm 7.
and a pneumatic cylinder 9 that swings the arm 7.

The arm 7 is defined in its axial position at a position that does not prevent the movement of the movable platen 4,
Between the position facing the inner surface of the mold 5a provided on the fixed platen 2 (solid line in Figure 2) and the position (imaginary line in Figure 2) that receives the ceramic filter supplied from a parts feeder (not shown), A reciprocating rotational movement is performed together with the filter clamping device 8.

In this way, by using the tie bar 3 as the rotation center, the filter clamp device 8 and the mold 5 are
It becomes possible to set the relative position with respect to a and 5b with extremely high precision.

As clearly shown in FIGS. 3 and 4, the filter clamping device 8 includes a filter holder 11 that slides on a pair of guide rods 10 erected at the free end of the arm 7, and a filter holder 11 that slides along the guide rods 10. It consists of an electric slide actuator 12 that is driven in the axial direction, and a knock pin device 13 that is pneumatically operated to position the filter holder 11 relative to the mold 5a.

The filter holder 11 can separately receive a pair of ceramic filters 14 in the shape of rice cakes in a receiving part 15 whose lower surface and both sides are closed, and also has a presser plate 16 biased by a torsion spring 16a. is pressed against the upper surface of the ceramic filter 14, thereby elastically gripping the ceramic filter 14.

Extrusion rods 17 are in contact with the surface of the ceramic filter 14 opposite to the surface facing the mold 5a. The push-out rod 17 is engaged with the pipe member 19 through a compression coil spring 18 so as to be relatively slidable.
With the thrust of the pneumatic cylinder 20 connected to
The ceramic filter 14 is pushed out from within the receiving portion 15.

Filter mounting holes 21 connected to the runners are recessed at appropriate locations on the inner surfaces of both molds 5a and 5b. This filter mounting hole 21 is provided with a ceramic filter 14.
The opening side is slightly widened so that the ceramic filter 14 can be easily inserted, and is deep enough to prevent the pressed ceramic filter 14 from falling out.

Next, the operation procedure of the above embodiment will be explained.

First, the ceramic filter 14, which is separately supplied from a parts feeder, is received into the receiving part 15 at the position shown by the imaginary line in FIG. Rotate arm 7.

At this time, by setting the position of the filter holder 11 in advance according to the mold specifications by the stroke of the slide actuator 12, the filter mounting hole 2 of the mold 5a is positioned at the arm rotation limit position.
It is assumed that the ceramic filter 14 is aligned with 1. Moreover, the ceramic filter 14 is elastically pressed by the presser plate 16, so that the ceramic filter 14 received on the outside of the mold clamping device 1 does not fall off or is crushed, and is held on the inner surface of the mold 5a. can be moved to a predetermined position.

Next, push out the dowel pin 13. Knock pin 1
3 is provided with a stroke detection device (not shown), which detects when the tip of the dowel pin 13 enters the pin hole 22 recessed in the inner surface of the mold, and detects when the tip of the dowel pin 13 enters the pin hole 22 recessed in the inner surface of the mold. 11 is correctly opposed to the filter mounting hole 21.

When the pneumatic cylinder 20 is pulled in from this state,
The pipe member 19 is pushed out, and the pushing rod 17 is pushed out via the coil spring 18. As a result, the ceramic filter 14 is pushed into the filter mounting hole 21. In this way, by transmitting the thrust of the pneumatic cylinder 20 to the pushing rod 17 via the spring 18, even if the movement of the ceramic filter 14 is inhibited for some reason, the thrust of the pneumatic cylinder 20 can be transmitted to the push-out rod 17 via the spring 18. 18 can be absorbed and crushing of the ceramic filter 14 can be avoided. Also, at this time, if a sensor that detects the presence or absence of the ceramic filter 14 in the receiving part 15 and a sensor that detects the movement stroke of the pipe member 19 are provided, the signals of these sensors can be compared to ensure that the It is possible to determine whether the ceramic filter 14 is inserted into the filter mounting hole 21 or not.

[Effects of the invention] As described above, according to the invention, since the elastic force of the coil spring acts as the substantial extrusion force acting on the filter, no unreasonable force is applied to the ceramic filter. The filter can always be pushed out with stable force. Therefore,
This is extremely effective in eliminating the risk of filter damage and improving reliability when setting the filter in a mold.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a mold clamping device to which the present invention is applied. FIG. 2 is an enlarged view of the main parts viewed from the direction of FIG. 1. FIG. 3 is an enlarged side view of the main part with a portion cut away. FIG. 4 is also an enlarged drawing. 1... Mold clamping device, 2... Fixed plate, 3... Tie bar, 4... Movable plate, 5a, 5b... Mold, 6...
...Filter setting device, 7...Arm, 8...Filter clamp device, 9...Pneumatic cylinder, 10
...Guide rod, 11 ...Filter holder, 1
2...Slide actuator, 13...Knock pin device, 14...Ceramic filter, 15...
...Receiving portion, 16... Pressing plate, 16a... Torsion spring, 17... Push rod, 18... Compression coil spring, 19... Pipe member, 20... Pneumatic cylinder, 21... Filter mounting hole.

Claims (1)

[Claims for Utility Model Registration] A device for setting a filter in a molten metal passage of a matching mold for casting, comprising a means for holding the filter, and a means for holding the filter, and a device for setting the filter in a molten metal passageway of a mold for casting, and a means for holding the filter, and a device for setting the filter in a molten metal passageway of a mold for casting. and a means for pushing out the filter, wherein the means for pushing out the filter connects a pushing member that comes into contact with the filter, a driving means that applies a thrust to the pushing member, and a relative displacement between the pushing member and the driving means. 1. A filter setting device for a casting machine, comprising a spring means for setting a filter in a casting machine.