JP3395960B2 - Pattern plate identification device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for discriminating the type (number) of a pattern plate used for mold making.

[0002]

2. Description of the Related Art Conventionally, molding molds have been used in various ways, such as by discriminating which pattern plate is used to control the amount of molten metal for each mold, and by making it useful for post-treatment of cast products and molding sand. As a means for discriminating the type of the pattern plate, a pattern plate carrier (hereinafter, referred to as a carrier) for transporting the pattern plate is used. That is, a plurality of proximity switches are provided above the side of the roller conveyor for transporting the carriers so as to project toward the carrier on the roller conveyor, and one side of the carrier corresponds to one of the plurality of proximity switches. The type of pattern plate is determined by mounting the switch pad by protruding it.

[0003]

In the pattern plate discriminating means as described above, a plurality of proximity switches are provided so as to project above the side portion of the roller conveyor, and the switch contact is projected from the side surface of the carrier. Since it is attached as a problem, there are problems in safety and hygiene such as a plurality of protruding proximity arranged proximity switches and switch holders being easily caught by an operator, and it is difficult to handle such as cleaning the carrier. there were. The present invention has been made in view of the above problems, and solves a safety and health problem for an operator by preventing a plurality of proximity switches and switch pads from protruding from a roller conveyor and a carrier, and cleaning the carrier. It is an object of the present invention to provide a pattern plate discriminating device which can be easily handled.

[0004]

In order to achieve the above object, a pattern plate discriminating apparatus according to the present invention is provided with a support frame between upper portions of conveyor frames which are erected at intervals, and both ends of the support frame are provided. A hollowing roller conveyor is formed by providing the hollowing rollers facing each other on the upper part, and a plurality of non-ferrous proximity switches are provided above the central position of the support frame with their tips slightly lower than the upper surface level of the hollowing roller. On the other hand, the switch plate corresponding to the plurality of non-ferrous proximity switches is embedded in the center of the lower surface of the pattern plate carrier transferred by the hollowing roller conveyor.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. In FIGS. 1 and 2, two conveyor frames 1 and 1 are erected at intervals, and a flat H-shaped support frame 2 is laid between the upper portions of the conveyor frames 1 and 1. At the upper ends of both ends of the support frame 2, hollowing rollers 3 and 3 are provided so as to face each other to form a hollowing roller conveyor 4 as a whole. A pattern plate carrier 5 (hereinafter referred to as carrier 5) for fitting and setting a pattern plate and carrying it in and out of the mold making machine is movably placed on the upper part of the hollowing roller conveyor 4.

A plurality of non-ferrous proximity switches 7, 7 are attached to the central portion of the support frame 2 via a bracket 6 with their upper ends slightly lower than the upper surface level of the hollowing rollers 3, 3. . The plurality of non-ferrous proximity switches 7, 7 are arranged side by side in a direction intersecting the extension direction of the hollowing roller conveyor 4 (see FIG. 2). On the lower surface of the carrier 5, as shown in FIG.
Switch pads 8 and 8 made of copper plates are embedded by screws 9 at positions corresponding to the plurality of non-ferrous proximity switches 7 and 7, and the lower surface thereof is flush with the lower surface of the carrier 5.

In the thus constructed apparatus, the carrier 5 having the corresponding pattern plates fitted therein is transferred on the hollow roller conveyor 4 and the switch pad 8 is moved upward corresponding to the non-ferrous proximity switch 7. Stop. At this time, all the non-ferrous proximity switches 7 and 7 are activated, and the non-ferrous proximity switches 7 and 7 corresponding to the switch contacts 8 and 8 react to determine the type (number) of the pattern plate. This discriminating signal is used for subsequent control of the amount of molten metal poured into the molding mold or for post-treatment of cast products and molding sand.

The plurality of non-ferrous proximity switches 7, 7 are provided.
Since the switch pads 8 and 8 are embedded in the central portion of the hollow roller conveyor 4 or the lower surface of the carrier 5, they are not caught by an operator and the carrier 5 can be easily handled for cleaning. All problems have been resolved. Further, the non-ferrous proximity switches 7 and 7 are used as the switches, and the copper plate is used as the switch pad, so that there is an advantage that the conventional iron carrier can be used as it is and the device can be easily repaired.

[0009]

As is apparent from the above description, the present invention is provided with a plurality of non-ferrous proximity switches in the central upper portion of the hollow roller conveyor, and the lower surface of the pattern plate carrier transferred on the hollow roller conveyor. Since the switch pads corresponding to the plurality of non-ferrous proximity switches are embedded in the above, it is possible to easily discriminate the type of the pattern plate fitted and set in the pattern plate carrier, and additionally the hollowing roller conveyor and the pattern plate. Proximity switches and switch stoppers can be prevented from protruding from the carrier, and safety and health problems can be solved, and various advantages such as easy handling of cleaning of the device can be achieved.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing an embodiment of the present invention.

FIG. 2 is a view on arrow AA in FIG.

FIG. 3 is an enlarged cross-sectional view of a main part of a B part in FIG.

[Explanation of symbols]

1 Conveyor frame 2 support frame 3 hollowing roller 4 hollowing roller conveyor 5 pattern plate carriers 7 Non-ferrous proximity switch 8 switch

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B22C 7/04 B22C 21/04 B22D 46/00

Claims (3)

(57) [Claims] 1. A support frame 2 is provided between the upper parts of conveyor frames 1, 1 which are erected at intervals, and centering rollers 3 and 3 are provided at the upper ends of both ends of the supporting frame 2 so as to face each other. Conveyor 4 is configured and a plurality of non-ferrous proximity switches 7, 7 are mounted above the central position of the support frame 2 with their tips slightly lower than the upper surface level of the hollowing rollers 3, 3. A pattern plate discriminating apparatus, characterized in that switch pads (8, 8) corresponding to the plurality of non-ferrous proximity switches (7, 7) are embedded in a central portion of a lower surface of a pattern plate carrier (5) transported by a pulling roller conveyor (4). 2. The pattern plate discrimination according to claim 1, wherein the plurality of non-ferrous proximity switches 7, 7 are arranged side by side in a direction intersecting an extension direction of the hollowing roller conveyor 4. apparatus. 3. The pattern plate discriminating apparatus according to claim 1, wherein the switch pad 8 is a copper plate.