JPH05253641A - Assembling device for precision casting - Google Patents

Abstract

PURPOSE:To smoothly and surely connect a casting product with a connecting part for casting product by connecting while measuring a distance between the casting product and the connecting part for casting product with a sensor after sticking a connecting material to a contacting surface between the casting product and the connecting part for casting product. CONSTITUTION:A work W carried to a specified position is held and carried by chuck mechanism 103d of a horizontal swing type robot and shifted on a storing vessel 16. By using the sensor S, molten wax M is stuck to the lower surface of the colored molten wax W in the storing vessel 16. Successively, the work W held by the chuck mechanism 103d is descended while measuring the distance to the upper surface of the connecting part 120 for casting product by using the sensor S after positioning on the upper surface of the connecting part 120 for casting product of a wax assembly supported to the wax assembly supporting mechanism, and the lower surface of the work W is brought into contact with the upper surface of the connecting part 120, and the work W is surely stuck to the upper surface of the connecting part 120.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precision casting assembling apparatus for forming a molded product having the same shape as a product in a lost wax casting process and connecting the molded product to a molded product connecting portion.

[0002]

2. Description of the Related Art Generally, in a lost wax casting method, first, a wax molded product having the same shape as the product is molded by injection molding, and then these wax molded products are assembled together in a tree shape, Refractory particles are sprayed around the assembly while the ceramic slurry is applied, and this is repeated several times to form a large number of coating layers around the assembly, which is then dried and then a wax molded product is formed. (Assembly) is melted and removed from inside the coating layer, and molten metal is injected into the open space,
Finally, the coating layer is removed to remove the product.

[0003]

Generally, when a wax molded product is assembled in a tree shape, the wax molded product is divided into a plurality of branched product connecting portions of the wax assembly which are separately molded by injection molding. Had been welded to the front and back surfaces of. As a conventional welding method, a heat plate is used to heat and melt the contact surface of the wax molded product with the molded product connecting portion and / or the wax molded product welding region surface of the molded product connecting portion, and then the wax molded product is molded. Although it is welded to the product connecting part, in this case, it is difficult to control the heating and melting operation by the heat plate, and there is a problem such as when both are not reliably welded or when the wax melts too much and the wax drips downward. Occurs.

The present invention has been made in view of the above circumstances. An object of the present invention is to enable a molded product to be smoothly and surely connected to a molded product connecting portion, and to prevent connection failure. An object of the present invention is to provide an assembling apparatus for precision casting which can be prevented.

[0005]

In order to achieve the above object, the present invention provides a transfer means for fixing a molded product and transferring it onto a molded product connecting portion, and a molded product on the molded product connecting portion. Before being transferred to, the contact surface of the molded product contacting the molded product connecting portion, a connecting material attaching means for attaching a connecting material connecting the molded product and the molded product connecting portion, and the transfer means, Further, it is provided with a sensor for measuring the distance to the molded product connecting portion.

[0006]

In the assembly apparatus for precision casting of the present invention, before transferring the molded product to the molded product connecting portion by the transfer means,
After attaching the connecting material to the contact surface of the molded product with the molded product connecting portion by the connecting material attaching means, the molded product is connected to the molded product connecting portion while measuring the distance between the molded product and the molded product connecting portion with the sensor. To be connected via a connecting material.

[0007]

Embodiments of the present invention will be described below with reference to FIGS.

1 to 4, reference numeral 10 denotes a work (wax molded product) W which has been conveyed to a predetermined position.
It is a horizontal swivel type robot that fastens and transfers the above to the five molded product connecting portions 120 arranged at equal intervals of the wax assembly 12. As shown in FIG. 4, the horizontal swing robot 10 is provided with a first arm portion 101 on a robot body 100 so as to be horizontally swingable, and the first arm portion 101 is provided.
A second arm portion 102 is provided on the second arm portion 102 so as to be horizontally rotatable, and a hand portion 103 is provided at the tip of the second arm portion 102.
However, it is provided so as to be rotatable around its axis and capable of moving up and down along the axis.

The hand portion 103 is vertically provided on a head main body 103a arranged at an upper portion, a rodless cylinder 103b horizontally arranged on a lower surface of the head main body 103a, and a movable portion 103c of the rodless cylinder 103b. A chuck mechanism 103 for gripping the base of the work W
and a laser beam for measuring the distance between the lower surface of the workpiece W provided on the chuck mechanism 103d and held by the chuck mechanism 103d and the upper surface of the molded product connecting portion 120 of the wax assembly 120. The sensor S is a main component.

The wax assembly 12 includes a sprue part 121.
On the lateral member 122 in which the
0s are arranged in parallel at equal intervals. The wax assembly support mechanism 14 that horizontally and 180 ° rotatably supports the wax assembly 12 by gripping the tip end portion of the molded product connecting portion 120 and the sprue portion 121 of the horizontal swivel robot 10. It is installed in the vicinity. Further, a large number of the works W are bonded to the upper and lower surfaces (bonding surfaces) of the five molded product connecting portions 120 of the wax assembly 12 at equal intervals.

Further, a storage tank 16 for storing the molten wax M is provided near the horizontal turning robot 10.

In the precision casting assembly apparatus configured as described above, first, the work W conveyed to a predetermined position is chucked by the chuck mechanism 103 of the horizontal turning robot 10.
It is gripped and conveyed by d. And the chuck mechanism 1
The work W gripped by 03d is transferred to the upper side of the storage tank 16 and is lowered while measuring the distance from the liquid surface of the colored molten wax M in the storage tank 16 using the sensor S to the lower surface of the work W. The molten wax M is attached.

Then, the horizontal turning robot 10 is operated to operate the work W held by the chuck mechanism 103d.
Is positioned on the upper surface of the molded product connecting portion 120 of the wax assembly 12 supported by the wax assembly supporting mechanism 14, and then the sensor S is used to measure the distance from the upper surface of the molded product connecting portion 120. The lower surface of the work W is brought into contact with the upper surface of the molded product connecting portion 120 while being lowered while being measured. in this case,
Since the molten wax M is attached to the lower surface of the work W, the work W is reliably adhered to the upper surface of the molded product connecting portion 120.

Subsequently, after the gripping of the work W by the chuck mechanism 103d is released, the horizontal turning robot 10 picks up the next work W to a predetermined position. Then, by repeating the above-described operation, the works W are sequentially adhered to the upper and lower surfaces of the molded product connecting portion 120 of the wax assembly 12.

Although the sensor S is used to detect the liquid level of the molten wax M in the above embodiment, the storage tank 16
When the liquid level of the molten wax M inside is constantly controlled, it is not necessary to use the sensor S for measuring the distance from the liquid level.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, as in the first embodiment shown in FIG. 1, the lower surface of the work W is changed to the liquid surface of the molten wax M. Instead of adhering, the work W gripped by the chuck mechanism 103d is placed in the placement hole 18 having a shape similar to the lower surface of the work W, and then the molten wax M is sprayed from below to melt the molten wax M on the lower surface of the work W. May be attached.

In the present embodiment, the sensor S is described as a non-contact type using laser light.
A sensor using ultrasonic waves or the like may be used. When the work W is used only for the operation of adhering the work W to the upper surface of the molded product connecting portion 120, the distance between the lower surface of the work W and the upper surface of the molded product connecting portion 120 is measured using a contact type sensor. You may do it.

[0018]

As described above, according to the present invention, the transfer means for fixing the molded product and transferring it onto the molded product connecting portion, and before transferring the molded product onto the molded product connecting portion, A connecting material attaching means for attaching a connecting material for connecting the molded product and the molded product connecting portion to a contact surface of the molded product with the molded product connecting portion, and the molded product connecting portion provided in the transfer means. Since it is provided with a sensor for measuring the distance to the molded product, the contact surface of the molded product with the molded product connecting portion is contacted by the connecting material attaching means before transferring the molded product to the molded product connecting portion by the transfer means. After connecting the molded product to the molded product, the sensor measures the distance between the molded product and the molded product connecting part, and the molded product is connected to the molded product connecting part via the connecting material. Parts can be connected smoothly and securely, and the occurrence of connection failure, etc. It can be stopped, thus casting a good product quality.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a front view showing a hand portion of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a perspective view showing the overall configuration of the first embodiment.

FIG. 5 is a schematic configuration diagram showing a second embodiment of the present invention.

[Explanation of symbols]

 10 Horizontal Swirling Robot (Transfer Means) 16 Storage Tank (Connecting Material Adhering Means) 120 Molded Product Connecting Section W Work (Wax Molded Product) S Sensor M Melted Wax (Connecting Material)

Claims (1)

[Claims] 1. A precision casting assembling apparatus for molding a molded product having the same shape as a product and connecting the molded product to a molded product connecting portion to fix the molded product and connect the molded product. Before transferring the molded product to the molded product connecting part and the transfer means for transferring the molded product to the molded product connecting part, the molded product and the molded product connecting part are connected to the contact surface between the molded product and the molded product connecting part. An assembly apparatus for precision casting, comprising: a connecting material adhering means for adhering a connecting material; and a sensor provided on the transfer means for measuring a distance from the molded product connecting portion.