JPH0195867A - Casting taking out method - Google Patents

Abstract

PURPOSE:To facilitate and ensure the continuous taking out of a casting in a casting line by transferring a hook member by standing it at a sprue part after pouring a molten metal in the cavity of a flaskless mold and hanging the hanger of a suspension conveyor on the hook member. CONSTITUTION:A hook member 4 is stood by imbedding it in the sprue part 2a of a cavity 2 immediately after a molten metal being cast into the cavity 2 of a flaskless mold M. This flaskless mold M is transferred to a taking out station S by a transfer means 1. The hook member 4 is hung on the hanger 23 of the suspension unit 19 which composes a suspension conveyor 17 and transported to a terminal part of the transfer means 1. At this terminal part the locking projection 24 of the suspension unit 19 and the locking tool 21 of a power chain 20 are transferred by locking them. At this time, a casting W is taken out from the transfer means 1 with its remove from the flaskless mold.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for taking out castings in a vertical flaskless casting line using flaskless molds.

(Prior Art) Conventionally, as a method for taking out castings in a vertical frameless casting line, a method of inverting and dropping the frameless mold at the end of the conveying means in the casting line onto a separation device has been frequently used. However, with this method, when the flaskless mold at the end of the conveyance means in the casting line turns over and falls, the next flaskless mold may also fall onto the separating device, making it difficult to take out the products individually. Not only is this possible, but there is a risk that the products may be damaged due to interference between the products. In order to cope with the above-mentioned problems, various methods have been devised in the past to individually take out the products at the end of the conveying means in the casting line. For example, as described in Japanese Patent Publication No. 60-16868, a gripping member configured to grip a casting and having a vibration device is provided at the end of a conveying means in a vertical frameless casting line, and while the gripping member is vibrated, It has already been proposed that the castings can be taken out individually by piercing the casting mold and grasping the castings inside.

(Problems to be Solved by the Invention) In the case of the above-mentioned known example, it is necessary to pierce the mold while vibrating the gripping member, which necessitates a configuration in which a vibration device or the like is attached to the gripping member. The structure may become complicated. In addition, even in a casting line that casts the same type of casting, there are differences in the mold thickness of each flaskless mold, so the position of the flaskless mold at the end of the conveying means may be displaced, and the gripping member If you try to apply it to a casting line that casts different types of castings in a mixed flow (in other words, a casting line that mixes flaskless molds with different mold thicknesses), it may be difficult to take out the castings.
The position of the flaskless mold at the end of the conveying means of the casting line is largely shifted forward and backward in the conveying direction, and there is a problem that the casting cannot be taken out by the gripping member.

The present invention has been made in view of the above points, and it is possible to simplify the take-out device, and also to facilitate and ensure continuous take-out of castings in a casting line even when the mold thickness of a flaskless mold changes. The purpose is to make it possible to carry out the following tasks.

(Means for Solving the Problems) In order to solve the above problems, in the method of the present invention, after pouring the molten metal into the cavity formed on the joint surface of the continuously conveyed flaskless mold, the sprue of the cavity is A hook member is installed upright in the section, and then each of the frameless molds is sequentially conveyed to a take-out station, and a hanger provided above the take-out station is configured to hook a hanger of the conveyor to the hook member and take out the casting. ing.

(Function) In the method of the present invention, immediately after pouring molten metal into the cavity of a flaskless mold, a hanger of a conveyor is hooked onto a hook member erected at the sprue of the cavity, and castings are taken out one after another. Therefore, not only can the unloading device be simplified, but even if the mold thickness of the flaskless mold changes, the casting can be reliably removed in response to the change.

(Example) Hereinafter, the method of the present invention will be explained with reference to the example shown in the attached drawings.

The casting removal device used in the method of the present invention comprises a first
As shown in the figure, cavities 2.2 and 2 are formed on the joint surfaces of the frameless molds M, M, etc., which are molded by a molding machine (not shown).
・After sequentially pouring the molten metal into these molds M
It has a casting line A that is configured to cool molds , M . This is a take-out station S for taking out a casting W, which is a product, from M.

At a suitable position in the casting line A, there is a pouring device 3 (see Fig. 2) which is to pour the molten metal into the cavity 2, and a pouring device 3 (see Fig. 2) which is located immediately after the pouring device 3 and which is used to pour the molten metal into the cavity 2 (see Fig. 2). In other words, an embedding device 5 for embedding and erecting the hook member 4 in the sprue portion 2a of the casting W) before solidification is attached.

The embedding device 5 includes a cart 8 which is configured to run in the front and back direction by the driving force of a motor 7 on a guide rail 6.6 extending parallel to the casting line A, and a cart 8 on which the casting device 5 is mounted. A first hydraulic cylinder 9 that operates in a direction perpendicular to the line A, a second hydraulic cylinder IO that is provided at the tip of the piston rod 9a of the first hydraulic cylinder 9 and that operates in a vertical direction, and a second hydraulic cylinder IO that operates in a vertical direction. It consists of a magic hand 11 connected to the tip of the piston rod 10a and configured to be able to grasp the hook member 4 conveyed by a wire-shaped conveyance means 12 provided adjacent to the embedding device 5. .

The hook member 4 is composed of a key-shaped hook portion 4a and a cross-shaped attachment portion 4b formed at the lower end of the hook portion 4a, and is sequentially conveyed with the hook portion 4a locked to the conveyance means 12. It is now possible to do so. Then, this hook member 4 is carried onto the sprue part 2a of the frameless mold M by the extension operation of the first hydraulic cylinder 9 while the hook part 4a is held by the magic hand 11 of the embedding device 5. , the mounting portion 4b is pushed into the unsolidified molten metal filling the sprue portion 2a of the cavity 2 by the extension operation of the second hydraulic cylinder 10, thereby being fixed upright (
(See Figure 3). Note that a stepped portion 13 for positioning the attachment portion 4b of the hook member 4 is formed in the sprue portion 2a. Further, the conveyance means I includes a rotary encoder (not shown) for detecting the conveyance movement amount of the flaskless mold M, and a rotary encoder (not shown) that detects the conveyance movement amount of the flaskless mold M, and a rotary encoder (not shown) that detects the conveyance movement amount of the flaskless mold M, and a rotary encoder (not shown) that detects the conveyance movement amount of the flaskless mold M. A sensor 14 for detecting the passage of the trolley 8, and a control device 15 that receives output signals from the sensor 14 and the rotary encoder and operates to move the truck 8 by a predetermined amount in the front and rear directions. In this embodiment, the sensor 14
is a contact terminal type having a contactor 14a, and the contactor 14a is a notch 1 formed at the joint surface of the adjacent frameless molds M, M (in other words, at a position corresponding to the center of the casting W).
It is configured to measure the timing of contact between 6 and 16 and output the mold thickness T of the flaskless mold M in relation to the output signal from the rotary encoder. The control device 15 is constituted by a microcomputer or the like, and has calculation means for calculating the mold thickness T of each flaskless mold M based on the output signal from the sensor 14 (i.e., passage timing) and the output signal from the rotary encoder. and a movement control means for issuing a command to the motor 7 to move the trolley 4 in the front and back direction by the amount of change in accordance with the amount of change in the mold thickness T obtained by the calculation means. ing. In other words, the position of the embedding device 5 is corrected in response to changes in the mold thickness T of the flaskless mold M by the control device 15 that receives output signals from the sensor 14 and the rotary encoder. be.

On the other hand, above the take-out station S at the end of the conveying means 1, a hanging hanging extending in the conveying direction is a conveyor! 7 is provided. The hanging conveyor 17 is connected to a large number of hanging units 19, 19, which are movably installed on a free rail 18 which is located above the conveying means l and extends in the conveying direction.
and a locking tool 21.2 located above the free rail 18, extending substantially parallel to the free rail 18, and provided at a predetermined interval.
The power chain 20 has a power chain 1... Each hanging unit 19 is connected to the free rail 18.
It consists of a transport vehicle 22 = 7- mounted movably above the transport vehicle 22, and a hanger 23 suspended from the transport vehicle 22 and configured to be able to engage with the hook portion 4a of the hook member 4. A locking protrusion 2 is provided on the upper part of the transport vehicle 22 with which the locking tool 21 of the power chain 20 engages from the rear.
4 is provided.

The locking tool 21 is rotatably supported on the power chain 20, and the locking tool 21 and the locking protrusion 24 of the transport vehicle 22 are engaged with the power chain 20. A regulating member 25, 25...
is provided.

The free rail 18 has a slope portion +8a that is inclined upward from above to the rear of the take-out station S.
and a horizontal part +8b extending forward from the slope part 18a, and in the middle of the slope part 18a, there is a pair of swivels 26, 27 for sending out the units 19 one by one. is provided. The stopper 26.2
7 is a casting passage detection tube 29 that detects passage of the casting W by passing through a notch 28 formed in the joint surface of the flaskless molds M, M;
It is designed to move forward and backward based on signals from the train. That is, when the passage of the casting W is detected by the casting passage detection tube 29, one stopper 26 is operated backward.
After the flaskless molds M have been sent out, the stopper 26 is moved forward, and at the same time the other stopper 27 is moved backward, the next flaskless mold M is sent to the position of the stopper 26, and the stopper 27 is moved forward again. As a result, the flaskless molds M are fed out one by one.

Further, above the power chain 20, the locking tool 21 is forcibly tilted from the slope part 18a of the free rail 18 to the upper side of the take-out station S to prevent engagement with the locking protrusion 24 of the transport vehicle 22. A band-shaped regulating member 30 is provided to make the device impossible. In other words, the hanging units 19, 19... are engaged with their hangers 23, 23... in the first half of the horizontal part +8b of the free rail 18 (i.e., the upper position of the take-out station S). The hook member 4 is moved according to the movement of the hook member 4 (in other words, the movement of the casting W).

Next, a method of taking out a casting using the illustrated casting taking out device will be explained.

After the mold is formed by a molding machine (not shown), molten metal is poured into the cavity 2 formed between the frameless molds M by the pouring device 3, and immediately after that, the molten metal is poured into the sprue of the cavity 2 by the embedding device 5. When the frameless molds M, M, . A hook member 4 embedded in the sprue 2a of the casting W is hooked to the hanger 23 of the unit 19 on the hanger positioned in the first half of 18a, and the hook member 4 is hooked to the hanger 23 of the unit 19, and the hook member 4 is hooked to the hanger 23 of the unit 19. After being carried together, the locking protrusion 24 of the hanging unit 19 and the locking tool 21 of the power chain 20 are engaged with each other at the end of the suspension, and then the power chain 20
It is transported by the driving force of At this time, the casting W is taken out from the flaskless mold M at the same time as it deviates from the conveying means I. In this way, the hangings that are continuously conveyed by the driving force of the power chain 20 are connected to the units 19, 19, and 19.
Hanger 23.Framless mold M by 23...
, M, . . . castings W, W, . . . are continuously taken out. Further, as described above, while the flaskless mold M is being continuously conveyed by the conveyance means l, the flaskless mold M Even if the mold thickness T changes, the casting W can be taken out accurately.

The method of the present invention is not limited to the method using the apparatus of the above embodiment, and it goes without saying that the apparatus may be modified in design as appropriate without departing from the gist of the invention.

(Effects of the Invention) As described above, according to the method of the present invention, after pouring the molten metal into the cavity formed on the joint surface of the continuously conveyed flaskless mold, the hook member is erected at the sprue of the cavity. Then, each of the blank molds is sequentially conveyed to a take-out station, and a hanger provided above the take-out station hooks a hanger of the conveyor to the hook member to take out the casting, thereby simplifying the take-out device. This has the excellent effect that not only can the mold thickness of the flaskless mold change, but also that castings can be reliably removed in response to the change.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a specific example of a casting removal device used in the method of the present invention, Fig. 2 is a view taken along the X arrow in Fig. 1, and Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2. . 2...Cavity 2a...Gate section 4...Hook member 17...Hanging on conveyor 23...Hanger M... ...Flameless mold S...Take-out station W...Casting

Claims (1)

[Claims] 1. After injecting molten metal into the cavity formed in the joint surface of the continuously conveyed flaskless mold, a hook member is erected at the sprue of the cavity, and then each of the flaskless molds is sequentially conveyed to a take-out station. . A method for taking out castings, characterized in that the castings are taken out by hooking a hanger of a hanging conveyor provided above the taking-out station to the hook member.