JP2003340564A - Method and equipment for removing skirting board from workpiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply remove a protruding skirting board from a workpiece which has been cast. <P>SOLUTION: The workpiece W is dropped from a casting mold 5 after casting onto a fixture pallet 10. Pins 18 protruding from the fixture pallet 10 are made to touch the skirting board W1 of the workpiece W being dropped so that the skirting board W1 is removed from the workpiece W. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a width of a product rough material for removing a skirting board connected to a core used for forming a port or a water jacket from a product rough material such as a cylinder head of an automobile engine after casting. The present invention relates to a tree removing method and a baseboard removing device.

[0002]

2. Description of the Related Art Conventionally, during a process from a mold place process (casting process) in which a low-pressure casting machine is installed to a finishing process (removal of sprue and casting burrs) of the product rough material, the product is projected from the product rough material in series with the core. The skirting board is removed.

In the manual transportation by a forklift or the like, the skirting board has been removed by an operator in the product wholesale section of the molding process (low-pressure casting machine) or the product rough material input section to the finishing process.

In the production system in which the transportation is automated,
A jig pallet is used to secure the positional accuracy of the product rough material due to automatic loading in the finishing process, and to prevent the scattering of slag casting sand during transportation, and a conveyor, AGV (automatic carrier) is used. . Then, it is necessary to interpose an automatic process of removing the skirting board during the automatic carrying process.

For the above-mentioned automatic process of removing the skirting board, a method described in, for example, Japanese Patent Laid-Open No. 2001-341053 has been proposed when a trimming press is used or by a robot.

[0006]

However, in the conventional example in which the above-mentioned conveyance is automated, the transfer between the trimming press and the robot for the automatic process of removing the baseboard is performed. , It is necessary to have an automatic moving mechanism for taking out the product rough material from the jig pallet at the start and returning it to the jig pallet at the end. There was a risk that the equipment cost would increase and that the casting sand would scatter during the transfer process.

Therefore, the present invention has been made in view of the above problems, and provides a skirting board removing method and a skirting board removing device for easily removing a skirting board protruding from a cast product roughing material. The purpose is to do.

[0008]

According to a first aspect of the present invention, there is provided a method of removing a product blank from a casting die, in a method of removing a product blank from a casting product in which a baseboard continuous with a core is removed from a product rough after casting. It is characterized in that the baseboard is dropped onto the tool pallet, the pins protruding from the jig pallet are brought into contact with the skirting board of the product rough material in the process of dropping, and the skirting board is detached from the product rough material by the pin.

According to a second aspect of the present invention, pins are arranged at positions corresponding to the skirting boards of the product rough material on a jig pallet which receives and positions and holds the product rough material released from the mold after casting and dropped. It is characterized in that while the material is released from the mold and dropped onto the jig pallet, the skirting board of the product rough material collides with the pins of the jig pallet to separate the skirting board from the product rough material.

[0010]

Therefore, according to the first and second aspects of the present invention, the pins formed by projecting from the jig pallet are brought into contact with the skirting board of the product rough material which drops from the casting die onto the jig pallet after casting, and Since the wood is to be removed from the raw material of the product, it is only necessary to provide the jig pallet with a pin that pushes the baseboard of the raw material of the product from the bottom surface. can do.

Further, the positional accuracy of the mold and the jig pallet has been guaranteed so far, and as a result, the positional accuracy of the product rough material and the pin provided on the jig pallet is also guaranteed, which is peculiar. It is possible to reliably cut the skirting board of the product rough wood by the pins in the jig pallet without the need for a special positioning mechanism. There is no dent caused by the contact with, and the casting quality can be further improved.

Further, since the skirting board is detached during the transfer from the mold to the jig pallet, the step of transferring the product rough material is not required, the casting sand is not scattered by the transportation, and the working environment is improved. Can be made.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 4 show an apparatus for removing a scouring board of a product rough material to which the present invention is applied. FIG. 1 is a front view of a casting die forming process, and FIG. 2 is a side view of a product removing station in the forming die process. FIGS. 3, 4A and 4B are a plan view and a side view of a jig pallet used when the product is conveyed from the product take-out station to a product roughing material finishing process (gate and cast burr removal).

With respect to the molding process according to FIGS.
explain. The mold place process is composed of a casting station 1 for casting the product rough material W and a product take-out station 2 for taking out the cast product rough material W and transferring it to the transfer device T.

In the casting station 1, a low-pressure casting machine 4, upper and lower molds 5, a mold clamping device 8 for joining or separating an upper mold 6 of the mold 5 from a lower mold 7, and an upper mold 6 after mold opening.
Is moved together with the casting rough material W to the product take-out station 2.

Although not shown, the low-pressure casting machine 4 is an upper and lower mold 6, which is made by closing the mold by applying a low pressure to the molten metal during casting.
Casting is performed by a series of operations of injecting pressure into a mold 5 made of 7 and a core, and releasing the low pressure applied to the melt during solidification of the melt in the mold 5 to recover the melt in the runner.

The mold 5 includes an upper mold 6, a lower mold 7, and
It comprises a core (not shown) and constitutes the cavity of the product.
The lower mold 7 is fixedly arranged on the low-pressure casting machine 4, and the upper mold 6 is fixed to the mold clamping device 8 so as to be able to approach and separate from the lower mold 7. The core is fixed to the mold 5 by sandwiching the baseboard between the upper and lower molds 6 and 7, and forms a passage and a space in the product. The product passages and spaces are, for example, a supply / discharge port, a cooling jacket, and the like in an engine cylinder head.

The mold clamping device 8 includes the upper mold 6 of the mold 5.
Is held by the lower mold 7 so as to be able to approach and separate, and the mold 5 is clamped by pressing it against the lower mold 7, and the mold 5 is opened by separating from the lower mold 7.

The moving device 9 holds the mold clamping device 8 and conveys the upper mold 6 and the mold clamping device 8 after mold opening together with the cast product W to the product take-out station 2 described later. After the product W is taken out from the upper die 6 at the conveyed product taking-out station 2, the upper die 6 and the mold clamping device 8 are returned to the initial position of the casting station 1.

The product take-out station 2 is a finishing process (removing of a sprue and a casting burr) of the product rough material W (not shown).
Up to 6 on the jig pallet 10 and conveys the product rough material W, and the jig pallet 10 is moved up and down from the conveyor T to separate the casting product W from the upper die 6 of the die 5. And a transfer device 12 that transfers the transfer onto the jig pallet 10.

The transfer device T has an empty jig pallet 10
To position the product at the product transfer position and the casting product W
The jig pallet 10 thus transferred is transferred together with the cast product W to the finishing step of the rough product.

The transfer device 12 raises the empty jig pallet 10 shown by the dotted line, which is positioned by the transfer device T, from the transfer device T to the position shown by the solid line in the drawing, and moves it to the product take-out station 2 together with the casting product W. Moved upper mold 6
The product extrusion pin (not shown) is pressed to receive the casting product W from the upper die 6 onto the jig pallet 10, and then the casting product W is lowered and placed on the transporting device T while holding the casting product W. To do. The dropping distance of the product rough material W from the holding state of the mold 5 onto the jig pallet 10 is several tens of millimeters (for example, 20 mm to 40 mm).

FIGS. 3 and 4 show a jig pallet 10, which is a container surrounding the bottom 15 and provided with side walls 16. A plurality of cylindrical product pedestals 17 and skirting boards which stand upright from the bottom 15 are provided. And a plurality of pins 18 contacting the lower part of W1. The product receiving base 17 holds the product rough material W while positioning it by fitting it into the sprue of the product rough material W. The product rough material here indicates a cylinder head of an automobile engine. The pin 18 contacts the lower part of the skirting board W1 projecting from the product rugged material W for holding the core before the product cradle 17 is completely held by the product cradle 17 so as to remove the skirting board W1. It projects so that it can be cut from its root. Therefore, when the product rough material W is dropped on the jig pallet 10, first, as shown in FIG.
1 is brought into contact with the lower surface of the product rough product W and further cuts down the baseboard W1 by the base of the product rough product W, so that the sprue of the product rough product W is held by the product receiving stand 17 as shown in FIG. is doing.

As shown in FIG. 3, the skirting board W1 of the product rough material W has core skirting boards W1 which form the supply / discharge ports arranged on the left and right side portions of the product rough material W, and the water jacket The core skirting boards W1 to be formed are arranged on the front and rear sides of the product rough material W. Of course, the arrangement of the baseboard W1 is not limited to this, but may be arranged on the same side of the product rough material W. Even in such a case, the pin 18 abuts each skirting board W1 and cuts each skirting board W1 from its root before the product rough material W is completely held by the product receiving stand 17. It is natural to place it in.

The operation of the baseboard removing device for the product rough material W having the above-mentioned structure will be described together with the operation of the molding process. In the mold field step, the core skirting board W1 is set in the lower mold 7, and the upper mold 6 is set thereon by the mold clamping device 8 to clamp the mold, thereby completing the preparation for low-pressure casting.

Next, the molten metal is injected under pressure into the mold 5 by the low-pressure casting machine 4, and the molten metal in the runner is recovered by solidification.
The molten metal is solidified by being defined by the mold 5 and the core.

Next, the upper mold 6 is raised by the mold clamping device 8 to open from the lower mold 7, and the product rough material W including the core is separated from the lower mold 7 together with the upper mold 6 (the casting station in FIG. 1). Of the solid line).

Next, the moving device 9 moves the product rough material W including the upper mold 6 and the core to the product take-out station 2 so as to be in the state shown by the dotted line in FIG.

Then, the jig pallet 10 shown by the solid line on the transfer device T is lifted from the transfer device T by the transfer device 12, and as shown in FIG. And push the product push-out pin of the upper mold 6. The upper die 6 is a rough product W due to the pressing of the product extruding pin.
Release the hold and drop.

The baseboard W1 connected to each core of the product rough material W is
As shown in FIG. 5, the corresponding pin 1 of the jig pallet 10
As a result, the base material of the skirting board W1 is broken and separated from the product rough material W as shown in FIG. Prior to or at the same time as the detachment, the sprue of the product rough material W is fitted into the product receiving table 17, and the product rough material W is securely held in the product receiving table 17. The separated skirting board W1 drops onto the portion of the jig pallet 10 that has become a container,
Do not scatter outside of 0.

Next, the jig pallet 10 on which the casting product W is placed is lowered by the transfer device 12, and the jig pallet 1 is moved.
0 is positioned on the transport device T, and the transport device T transports the rough product W to the finishing step. In the finishing process, the product rough material W positioned on the jig pallet 10 from which the baseboard W1 has been removed is put into the finishing process by the transfer device of the finishing process. The emptied jig pallet 10 is returned to the product take-out station 2 in the molding process by the transfer device T.

In this embodiment, the effects described below can be obtained. That is, the pins 18 protruding from the jig pallet 10 are brought into contact with the skirting board W1 of the product rough material W falling from the casting die 5 onto the jig pallet 10 to separate the skirting board W1 from the product rough material W. Therefore, it is only necessary to provide the jig pallet 10 with the pin 18 for pushing the skirting board W1 of the product rough material W from the lower surface, and an extremely inexpensive mechanism can be provided as compared with the conventional automatic skirting board removing apparatus. .

Further, the positional accuracy between the die 5 and the jig pallet 10 has been guaranteed so far, and as a result, the positional accuracy between the product rough material W and the pin 18 provided on the jig pallet 10 is also improved. It is guaranteed, and the baseboard W1 of the product rough material W can be reliably cut by the pins 18 in the jig pallet 10 without the need for a specific positioning mechanism. There is no dent caused by the contact of W with a portion other than the contact position of the jig pallet 10, and the casting quality can be further improved.

Further, since the skirting board W1 is removed during the casting from the die 5 to the jig pallet 10, there is no need for a step of transferring the product rough material W, and there is no scattering of the casting sand due to the transportation. The working environment can be improved.

Although the jig pallet 10 is raised by the transfer device 12 toward the product rough material W side supported by the upper die 6 in the product take-out station 2 in the above embodiment, it is not shown. However, for example, the transfer device 12 is abolished, and instead, the product clamping material 8 is lowered by the mold clamping device 8 together with the upper mold 6, and when the interval with the jig pallet 10 becomes the set interval, W may be dropped onto the jig pallet 10.

[Brief description of drawings]

FIG. 1 is a front view of a molding process including a roughing product finishing device according to an embodiment of the present invention.

FIG. 2 is a side view of the product takeout station in the same molding process.

FIG. 3 is a plan view of a jig pallet.

FIG. 4 is a side view of a jig pallet.

FIG. 5 is a side view showing the relationship between the product rough material and the jig pallet slightly before the time of the product rough material in FIG.

[Explanation of symbols]

W Product rough material (product, product rough material) W1 baseboard 1 casting station 2 Product pick-up station 4 Low pressure casting machine 5 mold 6 Upper mold 7 Lower mold 8 mold clamping device 9 Moving device 10 Jig pallet 17 product cradle 18 pin

Claims (2)

[Claims] 1. A method of removing a scouring board of a product roughing material, in which a scouring board continuous with a core is removed from a product crushing material after casting. In the method of dropping a product crude material from a casting die onto a jig pallet, a jig pallet is used. A method for removing a scouring board of a product rough material, characterized in that a pin projecting from the skirting board is brought into contact with a skirting board of the product slack material being dropped, and the skirting board is disengaged from the product shaving material by the pin. 2. A pin is arranged at a position corresponding to a skirting board of the product rough material on a jig pallet that receives and positions and holds the product rough material that is released from the mold after casting and drops. The baseboard of the product rough material is separated from the baseboard of the product by colliding the baseboard of the raw material of the product with the pins of the jig pallet while releasing from the baseboard apparatus.