KR200205858Y1 - A continuous lost foam metal products casting apparatus - Google Patents

Abstract

The present invention continuously transfers a number of lost foam casting flasks continuously in one direction along a certain circulation transfer line, and a product model and casting sand (Green Sand) are put into each flask at each location on the flask transfer line. When the flask prepared in this way reaches a predetermined position, the pouring is performed, and when the flask after completion of pouring and product molding reaches another predetermined position on the line, the flask is turned over and the moldings in the flask are taken out of the flask. The present invention relates to a continuous lost foam structure device configured to perform continuous automatic lost foam casting by continuously repeating steps such as returning the empty flask to the line again.

The present invention is made in parallel with the first conveying line 100 and the first conveying line 100 made of a plurality of conveying rollers 101 arranged at regular intervals, the first conveying line 100 in close proximity to the first conveying line 100 The second conveying line 200 consisting of a plurality of conveying rollers 201 arranged and arranged at a predetermined interval, and the first conveying line is disposed at one end of the first and second conveying lines 100, 200 The first flask delivery unit 300 for transferring the flask from the (100) on the second transfer line 200 and the second end of the first and second transfer line 100, 200 is disposed on the second end A flask transfer device comprising a second flask transfer portion 400 for transferring the flask from the transfer line 200 onto the first transfer line 100, the product for each flask in place on the flask transfer device. Inputting the model and foundry sand and performing the step of mining the injected foundry sand The stages 500, the means 600 for pouring the flasks prepared as described above, and the flask after the pouring and product molding are inverted to take out the moldings in the flasks to the outside of the flask, and then perform the step of repositioning them. Provided is a continuous roast foam casting apparatus, characterized in that the means (700) are provided.

Description

Continuous Lost Foam Casting Machine {A CONTINUOUS LOST FOAM METAL PRODUCTS CASTING APPARATUS}

The present invention relates to a lost foam casting apparatus used to cast a metal product by the Lost Foam casting method, and in particular, a plurality of lost foam casting flasks are continuously and automatically successively in one direction along a constant circulation transfer line. The casting target product model and casting sand (Green Sand) are added to each flask at each place on the flask transfer line, and dodging of the casting sand is carried out. When each flask thus prepared reaches a predetermined position, pouring is performed. When the flask which has been finished pouring and forming the product reaches another fixed position on the line again, the process is repeated automatically by turning the flask upside down, removing the moldings from the flask, and then returning the empty flask to the line again. To perform lost foam casting Generated relates to the continuous Lost foam casting apparatus.

The lost foam casting apparatus to which the present invention is concerned is a casting apparatus that enables to precisely cast and mold a complex metal product such as an engine body of an automobile, an engine head or a manifold without the need for using a core and post-processing. The casting principle first uses a flammable foamed resin such as styrofoam to make a model of the product to be made, and places the product model inside a hollow flask, and then pours sand (sand) into the outer side of the product model to the side of the product model. When the molten metal is poured from the molten metal connected to the molten metal, the molten metal flows into the cavity formed by burning and evaporating the product model by the hot metal melt so that the product according to the product model is cast and molded.

Recently, in order to increase the productivity of a product using the lost foam casting method, it has been proposed to use a device capable of sequentially performing all the work steps required for casting in each location of the mobile phase while circulating a plurality of casting flasks in one direction.

Fig. 1 shows a configuration example of a typical continuous lost foam casting apparatus that has been proposed and used in the prior art, which has a plurality of bogies 1 arranged at both ends to move along a circular trajectory that draws a curved trajectory. The casting flasks 2 were mounted on the trolleys 1 so that product models and casting sands were injected into the flasks 2 and the injected molding sands were placed at each places in the movement along the trolleys 1 of the flasks 2. Compacting, compacting the molten metal, pouring each cast flask (2), extracting the contents, and then dumping (replacement) in order to achieve continuous lost foam casting. .

However, in the conventional apparatus as described above, the installation space is excessive because the apparatus is configured so that each bogie 1 moves along a circular curved trajectory having a large radius of movement at both ends of the transfer line forming the circular transfer of the bogie 1. During the compacting and dumping operations, the flask 2 must be moved to a position away from the transfer line to perform the necessary work, and then moved back onto the transfer line. The longer the time required, the lower the productivity of the entire apparatus, and the pouring work is done by the operator's manual work, there was a problem such as a large number of defective products as well as a high risk of safety accidents.

Accordingly, the present invention has been devised for the purpose of providing a further improved continuous lost foam casting apparatus that can effectively solve the conventional problems as described above.

1 is a plan view showing the overall configuration of the conventional device,

2 is a plan view showing the overall configuration of the apparatus according to the present invention;

3 is a plan view of the flask delivery unit of the present invention,

4 is a side view of the flask delivery unit of the present invention;

5 is a side view of the pouring means of the apparatus of the present invention;

6 is a plan view of the main part of FIG. 5;

7 is a front view of the pouring means;

Fig. 8 is a sectional view of the main portion of the pouring means.

Explanation of symbols on the main parts of the drawings

100: first feed line 101: feed roller

200: second feed line 201: feed roller

300: first flask delivery unit 301: truck

302: guide rail 303: drive motor

304: moving wheel 305: power transmission means

306: drive motor 307: feed roller

308,309,310: power transmission means 400: second flask transfer portion

500: casting sand injection and compacting means 600: pouring means

601: guide rail 602: drive motor

603,604: Electric Gear 605: Wheel Shaft

606 movement wheel 607 bogie

608: support 609: ladle

610: axis 611: ladle driving means

700: dumping means F: lost foam casting flask

The above object is made up of a plurality of feed rollers arranged at regular intervals in accordance with the present invention, the first and second transfer lines arranged in parallel close to each other, and disposed on one side end of the first and second transfer line To transfer the lost foam casting flask from the first transfer line onto the second transfer line, and the other end portions of the first and second transfer lines to dispose the flask from the second transfer line. A flask transfer device comprising a second flask transfer unit for transferring onto a transfer line, wherein a product model and a casting sand are put into each flask on the flask transfer device, the product casting sand is poured, the pouring is poured, and the casting is performed. Means for carrying out work steps such as flipping the completed flask over, taking the contents out of the flask and then repositioning And it is accomplished by providing a series Lost foam casting system is configured.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Fig. 2 shows the overall configuration of the apparatus according to the present invention, which has a plurality of transfer rollers 101 arranged at regular intervals and transfers the lost foam casting flasks F as in the example of Fig. 5, for example. A first conveying line 100 configured to be horizontally conveyed in one direction on the rollers 101, and a plurality of conveying rollers 201 arranged in parallel with the first conveying line 100 and arranged at a predetermined interval; And a second transfer line 200 configured to horizontally transfer the flasks F mounted on the transfer rollers 201 in the opposite direction to the first transfer line 100, and the first and the second 2 A first flask disposed at one end of the transfer line 100 and 200 to transfer and transfer the flask from the distal end of the first transfer line 100 onto the first entry portion of the second transfer line 200. Delivery unit 300, and the first and second The second flask transfer is arranged on the other end of the transfer line 100, 200 to transfer the flask from the distal end of the second transfer line 200 to the first entry of the first transfer line 100 It is configured to include a flask transfer device consisting of a portion (400).

The flasks mounted on the conveying rollers 101 on the first conveying line 100 and moved in the direction of the arrow are carts 301 of the first flask conveying part 300 at the distal end portions of the first conveying line 100. ) And the flask entered on the trolley 301 of the first flask transfer unit 300 is linearly moved a relatively short distance along the movement of the trolley 301 and then the second transfer line 200. ) Will be moved to the initial entrance.

3 and 4 show the specific configuration of the first flask delivery unit 300 to enable this action. The first flask transfer part 300 is disposed in a direction perpendicular to the first and second transfer lines 100 and 200 at one end of the first and second transfer lines 100 and 200. A guide rail 302 and a trolley 302 mounted on the guide rail 302 so as to linearly move along the guide rail 302 toward the second conveying line 200 or the first conveying line 100; The drive motor 303, the movement wheel 304, the transmission means 305 and the flask from the distal end of the first transfer line 100 is installed to move the cart 301 along the guide rail 302 Drive motor 306, the transfer roller 307, the transmission means 308 (309) (309) installed so as to move on the trolley 301 or the flask entered on the trolley 301 again to the outside of the trolley 301. ) 310 is configured to include.

The flask transfer action of the first flask transfer unit 300 configured as described above is mounted on the transfer rollers 101 of the first transfer line 100 to the end portion of the first transfer line 100 in the traveling direction. The transferred flask is rotated in the same direction as the feed rollers 101 of the first transfer line 100 by the driving motor 306 after reaching the trolley 301 of the first flask transfer unit 300. By the action of the conveying rollers 307 are carried on the trolley 301 and loaded. In this way, when the flask is completely moved onto the trolley 301 and loaded, the operation of the driving motor 306 and the transfer roller 307 is stopped, and the trolley 301 is guided by the operation of the driving motor 303. The linear movement of the second transfer line 200 toward the start direction of the second transfer line 200 is performed. After the movement, the driving motor 306 transfers the transfer rollers 307 on the second transfer line 200. The rollers 201 are operated to rotate in the same direction as the rollers 201 to move the flask F on the trolley 301 onto the first entry portion of the second transfer line 200.

The flask transferred to the second transfer line 200 as described above is moved along the second transfer line 200 after the end of the pouring operation to be described later, and goes through the following work steps, and the completed flask is transferred to the second transfer line 200. When reached to the distal end, the flask is moved back onto the forward entry of the first transfer line 100 by a second flask delivery unit 400 configured identically to the first flask delivery unit 300 described above and then roasted. In preparation for the foam casting operation, the apparatus is able to perform continuous lost foam casting by successively repeating this action on a plurality of lost foam casting flasks.

At the beginning of the first transfer line 100, there are provided means 500 for putting the product model and the foundry sand into the flasks located therein, and compacting the compacted sandblasted sand in a manner such as vibration.

The first transfer line 100 and the first flask transfer unit 300 after the product model and injection molding and compacting of the injection molding company by the means 500 are performed at the beginning of the second transfer line 200. Means 600 are provided for automatically pouring the flasks that reach the beginning of the traveling direction of the second transfer line 200.

5 to 8 show a specific configuration of the means 600 for performing the pouring operation, the pouring means 600 is a second transfer line (near the entry in the traveling direction of the second transfer line 200 ( The guide rail 601 is placed in the same direction as the traveling direction of the 200, and the moving wheel 606 rotates to one side or the other side by means such as a drive motor 602 and an electric gear 603, 604. A trolley 607 installed on the guide rail 601 to be linearly moved to one side or the other side along the guide rail 601 and a metal to be supported and poured on the trolley 607 through the support 608. Ladle 609 that is contained inside the melt, and the ladle driving means 611 is installed to be inclined to one side or the original position by the ladle 609 as the rotation point of the shaft 610. It is configured by.

Referring to the outline of the pouring operation by the pouring means 600, the flasks F that have been moved through the first transfer line 100 and the first flask transfer unit 300 described above are defined as, for example, five. When the number of the second transfer line 200 is entered into the traveling direction entry portion by the number, the pouring operation by the pouring means 600 is started while the movement of the flask F is paused. When the pouring operation is started, the driving motor 602 is operated, and the rotational force of the driving motor 602 is transmitted to the wheel shaft 605 through the electric gears 603 and 604 so that the wheel shaft 605 rotates. Accordingly, the movement wheels 606 provided at both ends of the wheel shaft 605 are rotated to one side and move along the guide rails 601, thereby moving the cart 607 along the guide rails 601. In this way, when the trolley 607 moves and stops in front of the flask F, the ladle 609 supported on the trolley 607 is inclined toward the flask F by the ladle driving means 611. As the molten metal contained in the ladle 609 is poured into the pouring hole F 'on the flask F, pouring is performed, and an appropriate amount of the molten metal melting for one flask F is completed. After the ladle 609 is rotated in place, the trolley 607 is moved to a stop before the next flask and pouring of the next flask is performed. In this way, when the pouring is completed for the predetermined number of flasks F located at the beginning of the second transfer line 200, the trolley 607 is returned to its initial position and the movement of the flasks F is resumed. It is done.

As described above, when the flasks in which the pouring and product molding are completed are transferred along the second transfer line 200 to reach near the distal end of the second transfer line 200 in the advancing direction, the end of the second transfer line 200 is near. The flipping of the flask is performed by the dumping means 700 disposed in the flask so that molding and the like are taken out of the flask, and the empty flask is returned to the second transfer line 200. In this way, the returned empty flask is conveyed back to the starting direction of the first transfer line 100 through the second flask transfer unit 400 that is soft at the distal end of the second transfer line 200. Will be repeated again.

Accordingly, the present invention can minimize the occurrence of defects while continuously performing product molding by the lost foam casting method by continuously repeating the above-described operations during the operation of the apparatus, and further minimizing the configuration of the apparatus as efficiently as possible. It is to provide a new useful effect, such as being able to install and use the device at a low cost and installation space.

Claims (1)

First and second transfer lines 100 and 200 and each of the plurality of transfer rollers 101 and 201 and disposed in parallel proximity to each other, and the first and second transfer lines 100 and 200, respectively. A first flask transfer part 300 disposed at one end of the first transfer line to transfer the lost foam casting flask from the distal end of the first transfer line 100 to the first entry direction of the second transfer line 200; A second flask disposed at the other end of the first and second transfer lines 100 and 100 to transfer the flask from the distal end of the second transfer line 200 to the forward entry of the first transfer line 100. It comprises a flask transfer device consisting of a delivery unit 400, for each flask circulated conveyed along the flask transfer device, the product model and casting sand is introduced, the injected casting sand is compacted, the molten metal is melted and the pouring and product After the flask is finished Continuous roast foam casting apparatus, characterized in that configured to sequentially repeat the operation steps to take out the contents after turning over.