JPS5821617Y2 - Cutting equipment for casting feeders, etc. - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutting device for a casting feeder, etc., for cutting and removing non-product parts such as a casting feeder, lifter, sprue, etc.

Casting generally involves pouring molten metal into the cavity of a mold and solidifying it to create a product in the desired shape.
Compared to machining such as cutting, it can be mass-produced in a shorter time, and even complex shapes can be produced relatively easily.
It is often used in the production of mechanical parts, etc.

By the way, in addition to the voids in the product part, this mold also has sprues, runners, and weirs for injecting the molten metal, vents for releasing gas outside the mold, and prevents slag, scale, etc. from solidifying inside the product part. Gaps such as feeders are also formed to replenish the solidification shrinkage of the casting and prevent defects such as cavities from occurring in the product. Since the non-product parts such as the riser and the riser are integrally molded, it is necessary to remove the non-product parts such as the riser and the riser after casting.

For this reason, conventionally, after removing the casting from the mold, the worker removed the thin parts such as gas vents by breaking them by hand or by hitting them with a hammer. Thick and unbreakable items, such as those that would not break, were cut and removed using a cutting machine such as a grinder.

When automating the work of cutting such feeders, lifters, gates, etc., if the casting is cast using a symmetrical casting method, the feeder, etc. will be formed on either the left or right side of the product part. Therefore, the operator has to check the position of the feeder etc. for each casting before cutting, which poses a problem of complicating the equipment.

This idea was made in view of the above points, and it consists of a cradle for setting a casting with non-product parts such as a riser, and a cutting machine for cutting the riser etc. A feeder, etc. that is attached to a base so that one side can swing freely toward the other and one side can slide freely in a direction perpendicular to the swinging direction, and is formed on the left or right side of the product part of the casting. Two limit switches are installed on the pedestal at a predetermined interval so that they are in contact with each other, and the output signal of these limit switches activates the pedestal or the cutting machine so that the cutting part of the feeder, etc. faces the cutting machine. After the sliding cylinder device slides and the pedestal or cutting machine slides, the pedestal or cutting machine is swung to cut the feeder, etc., and after the pedestal or cutting machine is cut, the pedestal or cutting machine is oscillated by an output signal opposite to the above from the limit switch. It is an object of the present invention to provide a cutting device for a casting feeder, etc., which can simplify the work of cutting and removing the feeder, etc. by providing a swinging cylinder device for returning the feeder.

An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show a cutting device for a casting feeder or the like according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes a cutting device for cutting and removing a riser 2b (see FIG. 5) formed on the left or right side of a knuckle arm 2a, which is a product part of a casting 2.
is composed of a pedestal 3 for setting the casting 2, and a cutting machine 4 for cutting the feeder 2b of the set casting 2, and the cutting machine 4 is arranged opposite to the pedestal 3. It is attached to the base 5.

A recess 3a for accommodating and holding the tip of the knuckle arm 2a is formed in the upper part of the pedestal 3, and a table 6 is provided approximately in the center of the recess 3a. A guide γ is provided.

Further, left and right arms 8a, ab are fixed to the lower part of the pedestal 3, facing diagonally downward to the right in FIG.
One end of an arc-shaped clamp arm 9 is rotatably attached to the upper end, and a clamp 10 is attached to the other end of the clamp arm 9.
is installed.

On the other hand, a clamp cylinder 1 is provided at the lower end of arms 8a and 8b.
1 is attached to the rod 11 of the clamp cylinder 11.
A is connected to a substantially central portion of the clamp arm 9, and the clamp cylinder 11 is operated by opening and closing a clamp open valve or a clamp close valve of a hydraulic circuit (not shown).

Further, arms 12a and 12b are fixed downwardly to the left and right sides of the lower end of the pedestal 3.
Upper and lower rods 13a, 13b are horizontally attached to the rods 13a, 13b, and cylindrical guides 14a, 14b are slidably attached to the rods 13a, 13b, respectively.

Further, a sliding cylinder 15 is fixed approximately at the center of the arm 12a, as shown in FIG.
d is slidably inserted therethrough, and the sliding cylinder 15 is operated by opening and closing a sliding valve of a hydraulic circuit (not shown).

A swinging arm 16 in the shape of a side curving is fixed to the rod 15a of the sliding cylinder 15 and the guides 14a and 14b, and the swinging arm 16 is rotatably attached to the base 5 at approximately the center thereof. attached and also arm 16
The lower part of the base 5 is inserted through the notch 5a of the base 5.

A swing cylinder 17 is provided at the lower end of the swing arm 16.
The swinging cylinder 11 is rotatably attached to the lower surface of the base 5 via a bracket 18.

The swing cylinder 11 is operated by opening and closing a swing valve or a swing return valve (not shown) in a hydraulic circuit (not shown).

Further, two limit switches 20a and 20b are provided at the upper end of the pedestal 3 via a bracket 19 at a predetermined interval as shown in FIG.
The switch knobs 20c and 20d of a and 20b are the pedestals 3
It is turned on and off by contacting the feeder 2b of the casting 2 set at .

The sliding valve is a limit switch 20a,
The swinging valve is opened by an ON signal from limit switch 20b, and the swinging valve is closed by an off signal from limit switches 20a and 20b, and the swinging return valve is opened.

Next, a method of using the cutting device of this embodiment will be explained with reference to FIGS. 6 and 7.

In this cutting device 1, before the casting 2 is set on the pedestal 3, the rod 11a of the clamp cylinder 11 is contracted, the clamp arm 9 is in the state A shown in FIG. The rod 17a of the dynamic cylinder 17 also contracts, and the pedestal 3 is in state B as shown in FIG.

When cutting and removing the feeder 2b of the casting 2 with this cutting device 1, first place the casting 2 between the left and right guides 7 of the table 6, and insert the tip of the knuckle arm 2a into the recess 3a of the pedestal 3. accommodate.

Then, either the left or right limit switch 20a,
20b is turned on when its switch knobs 20c and 20d are pushed by the riser 2b.

Next, when a start button (not shown) is pressed, the clamp close valve opens and the clamp cylinder 11 is activated.

Therefore, the rod 11a of the cylinder 11 moves upward, the clamp arm 9 rotates in the direction of arrow C, and its clamp 10 pushes the casting 2 in the direction of the arrow, and the casting 2 touches the inner surface of the recess 3a of the pedestal 3 and the clamp 10. It is held on the pedestal 3 by.

When the casting 2 is set on the pedestal 3 in this manner, a clamp confirmation limit switch (not shown) is turned on, and the sliding valve is opened by an on signal from either of the limit switches 20a, 20b.

Then, the sliding cylinder 15 is activated, and the pedestal 3 is moved to the riser 2b.
The cutting section slides in the right or left direction t in FIG. 3 so that it faces the cutting machine 4.

When the pusher S2b and the cutting machine 4 face each other, a limit switch for left and right confirmation (not shown) is turned on, the swinging valve is opened, the swinging cylinder 17 is operated, and the swinging arm 16 is moved by the rod 17a of the cylinder 17. is pushed by the shaft 5b
The pedestal 3 begins to swing in the direction of arrow E around the
also swings in the direction of arrow G.

Then, the cut portion of the riser 2b gradually approaches the cutter 4, and the cutter 4 starts cutting.

Then, as the swinging arm 16 swings, the pedestal 3 further swings, the feeder 2b is further cut, and when the pedestal 3 reaches the state F shown in FIG. 7, the feeder 2b is completely removed. disconnected.

Then, the pressed % 2b falls and the switch knobs 20c, 2 of one of the limit switches 20a, 20b are pressed.
When away from 0d, this limit switch f20a, 20
The swinging valve is closed by the off signal b, and the swinging return valve is opened instead, causing the rod 17a of the swinging cylinder 17 to contract.

Then, the arm 16 swings back in the direction opposite to the direction of arrow E, and
The pedestal 3 also swings back in the direction opposite to the direction of arrow G and returns to state B as shown in FIG.

When the pedestal 3 returns to the original state B, the clamp close valve closes and the clamp open valve opens, the rod Ila of the clamp cylinder 11 contracts, and the clamp arm 9 rotates in the direction opposite to the arrow C direction. Therefore, the knuckle arm 2a from which the riser 2b has been removed can be removed from the pedestal 3.

In this way, the feeder 2b is cut and removed by the device 1.

In the cutting device of this embodiment as described above, regardless of whether the feeder is formed on the left or right side of the knuckle arm, its position is confirmed by a limit switch, and the feeder and cutting machine are made to face each other. Therefore, the work of cutting and removing the feeder becomes easy, and as a result, the work time can be greatly shortened.

Furthermore, the completion of cutting of the feeder is detected by a limit switch for checking the left and right positions of the feeder, so the structure of the device is simple.

In the above embodiment, the case where the feeder is cut is explained, but this can be similarly applied to the case where the feeder sprue or the like is cut.

Further, in the above embodiment, only the pedestal is made to swing and slide, but it is also possible to make only the cutting machine swing and slide, or one may be made to swing and the other may be made to slide. You can do it like this.

As described above, according to the present invention, a pedestal for setting a casting having a non-product part such as a riser, and a cutting machine for cutting the riser etc. are connected to each other. Attach it to the base so that it can swing freely toward the direction of the casting and one side can slide freely in the direction perpendicular to the swinging direction, and leave a predetermined interval so that the riser etc. formed on the left or right side of the casting come into contact with each other. A sliding cylinder device in which two limit switches are installed on a pedestal with an opening, and the output signal t of the limit switch is activated to slide the pedestal or the cutting machine so that the cutting part of the feeder or the like faces the cutting machine. and an oscillating cylinder device which oscillates the pedestal or cutting machine to cut the feeder etc. after the pedestal or cutting machine slides, and returns the cradle or cutting machine to its oscillating motion after cutting by an output signal opposite to the above from a limit switch. Since this is provided, it is possible to simplify the work of cutting and removing the riser and shorten the working time, and the cutting device has the effect of being simple in structure.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a cutting device for casting feeders, etc. according to an embodiment of the present invention, Fig. 2 is a southerly view of the main part of Fig. 1, and Fig. 3 is a partial front view of Fig. 2. , Figure 4 is a partial front view of Figure 2,
FIG. 5 is a perspective view of the casting to be cut by the device, FIG. 6 is a side view of the device before setting the casting, and FIG. 7 is a side view of the device with the feeder cut. 1... Cutting device, 2... Casting, 2a.
...Knuckle arm (product department), 2b...
・Riser (non-product part) 3... cradle, 4...
- Cutting machine, 5... Base, 15... Sliding cylinder, 11... Rocking cylinder, 20a
. 20b...Limit switch.

Claims (1)

[Scope of utility model registration request] A cutting device for cutting and removing a non-product part such as a feeder formed on the left or right side of a product part of a casting during casting,
a pedestal for setting the casting; a cutting machine disposed opposite to the pedestal for cutting the non-product part of the set casting; and one of the pedestal and cutting machine facing the other. A base is mounted so that it can swing freely and one side of the base can be slid in a direction perpendicular to the rocking direction, and the non-product part on the left or right side of the casting set on the pedestal is in contact with the base. Two limit switches are installed on the pedestal at a predetermined interval in the sliding direction, and the holder is activated by the output signal of the limit switches so that the cutting part of the non-product part faces the cutting machine. A sliding cylinder device that slides the stand or cutting machine, and a limit switch that swings the stand or cutting machine to cut the non-product part after the stand or cutting machine slides, and 1. A cutting device for a feeder of a casting, etc., characterized in that it is equipped with a swinging cylinder device that returns to swinging in response to an output signal.