JP2578198Y2 - Gate cutting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate cutting device for cutting a gate protruding from the surface of a casting.

[0002]

2. Description of the Related Art A casting taken out of a casting mold is integrally formed with a sprue corresponding to a runner for pouring a molten metal into a cavity of the mold. To use the casting as a product, the sprue is cut. There is a need. Conventionally, the cutting operation of the sprue is worker has been performed manually with a cutting device with a rotating cutting blade, the cutting of the sprue manual work is not only significantly less work efficiency, the operator There was a problem that required a great deal of effort.

[0003] Thus, the above problem is solved by mechanizing the gate cutting.
To be determined, for example, Japanese Utility Model Publication No. 60-153719
Clamp the casting as shown and place the gate facing upward
Reversing between the removal posture and the cutting posture with the gate facing sideways
A reversing device and a disk-shaped rotary cutting blade are rotated.
Move up and down in the plane to remove the gate of the casting in the cutting position.
A cutting device capable of cutting when the rotary cutting blade is lowered.
Gate cutting devices have already been proposed.

[0004]

[Problem to be solved by the invention] However, the above proposal
In the sprue cutting device, the cut sprue and chips are
They are scattered on the floor, so they are picked up after cutting them
And that work was troublesome.

The present invention has been made in view of the above-mentioned circumstances , and can solve the above-mentioned problem.
It is an object of the present invention to provide a sluice cutting device that can achieve the sizing.

[0006]

In order to achieve the above object, according to the solution to ## devised as claimed in claim 1, to clamp the casting product
A reversing device for reversing between a mounting position in which the gate on the casting surface faces upward and a cutting position in which the gate points sideways, and a disk-shaped rotary cutting blade ascending and descending in the rotation plane of the rotary cutting blade,
When the rotary cutting blade is lowered with the gate of the casting in the cutting posture
Sprue cutting apparatus odor having a cutting device and that obtained by cutting the
The lower part of the rotary cutting blade at the time of descent,
A shoe that receives the gate cut by the cutting blade in a horizontal position
And the spout storage located near one end of this chute
A box, and the chute is moved when the rotary cutting blade is raised.
The other end is inclined toward the rotary cutting blade side,
It is configured to be tiltable between the horizontal position and
The gate on the chute goes down on the chute and
It is characterized by being dropped and discharged into the gate storage box .

According to a second aspect of the present invention , in addition to the configuration of the first aspect, the chute is formed in the shape of a pen.
Occurs when the gate is cut below the chute in horizontal posture
A swarf storage box for receiving swarf is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 9 show an embodiment of the present invention. FIG. 1 is an overall plan view of a sprue cutting device, and FIG.
3 is a view in the direction of arrow 3 in FIG. 1, FIG. 4 is an enlarged view of a main part in FIG. 2, FIG. 5 is a sectional view taken along line 5-5 in FIG. 4, and FIG.
FIG. 7 is an enlarged view in the direction of arrow 7 in FIG. 1, FIG. 8 is an enlarged view in the direction of arrow 8 in FIG. 1, and FIG.
It is a 9-line enlarged sectional view.

As shown in FIGS. 1 to 3, a reversing device 2 for clamping and reversing a casting W such as a cylinder block of an engine on an upper surface of a base 1 supported on a floor surface, and a gate W _{1 of the} casting W. ... rotary cutting blades 3, 3 4 a pair of right and left cutting apparatus having a _L, 4 and _R are provided to disconnect the. The two cutting devices 4 _L , 4 _R have substantially the same structure and are symmetrical with respect to a vertical plane passing through the center of the reversing device 2. Between the two cutting devices 4 _L , 4 _R , there is provided a chute-shaped chute 6 which receives the gates W _1, which have been cut from the casting W and dropped, and discharges them to the gate storage box 5. A chip storage box 7 for receiving chips generated when the gates W ₁ are cut is provided below.

Next, the structure of the reversing device 2 will be described with reference to FIGS.

The reversing device 2 includes reversing shafts 12, 12 rotatably supported by a pair of bearings 11, 11 provided on the base 1 and extending in the left-right direction. A U-shaped reversing frame 13 is fixed to the reversing shafts 12 and 12 in a side view.
An output rod 151 of a cylinder 15 supported on the base ₁ is connected to a bracket 14 protruding from the base 3. Therefore, when the cylinder 15 is driven to expand and contract, the reversing frame 13 reverses the position between the position indicated by the solid line and the position indicated by the chain line in FIG. In order to position the reversing frame 13 in the reversing state shown by a chain line in FIG. 5, a stopper 16 provided on the reversing frame 13 abuts against a tip of a stopper bolt 17 provided on the base 1 and having an adjustable protrusion amount.

A pair of right and left slide guides 18, 18 provided on the reversing frame 13 support a rectangular clamp plate 19 via slide rods 20, 20 so as to be movable up and down. connected to the output rod 21 ₁ of the cylinder 21 provided in 13 is driven vertically by.
A clamp arm 22 facing the clamp plate 19 is fixed to the reversing frame 13. Therefore, when the cylinder 21 is driven to extend while the casting W is placed on the clamp plate 19, the casting W is clamped between the rising clamp plate 19 and the clamp claw 22. At this time, the clamp claws 22 narrower than the clamp plate 19 abut between the four gates W ₁ ... Protruding from the upper surface of the casting W (see FIG. 6).

A positioning block 23 for positioning the casting W is mounted on the upper surface of the clamp plate 19. The positioning block 23 is a urethane resin member having a pin-shaped reinforcing member 24 embedded therein.
9 are detachably supported by four support members 25. The positioning block 23 has a recess 23 ₁ that substantially coincides with the outer shape of the casting W, the recess 23 ₁
Positioning is performed by fitting a casting W to the metal.

Next, the structure of the cutting devices 4 _L and 4 _R will be described with reference to FIGS. 8 and 9. The structure of the left and right of the cutting device 4 _L, 4 _R is because it is substantially the same, will be described as an example to the right of the cutting device 4 _R.

A cutting device main body 34 is swingably supported on a bearing 32 provided on an upper surface of a support 31 erected on the base 1 via a swing shaft 33 extending in the front-rear direction. 1
Output rod 35 ₁ of the supporting cylinder 35 is connected to the outer end of the cutting device main body 34 to. Accordingly, by driving the cylinder 35 to expand and contract, the cutting device main body 34
Swing three times.

A spindle 36 extending in the front-rear direction is rotatably supported at an inner end of the cutting device main body 34, and a disk-shaped rotary cutting blade 3 is fixed to an end of the spindle 36 on the reversing device 2 side. . A driven pulley 37 fixed to the end of the spindle 36 opposite to the rotary cutting blade 3 is connected via an endless belt 40 to a drive pulley 39 provided on a motor 38 supported on the upper surface of the cutting device main body 34. The drive pulley 39, the driven pulley 37, and the endless belt 40 are covered by a belt cover 41.

The support table 31 has two limit switches 4
2 and 43, one of the limit switches 4
2 operates by contacting the lower surface of the outer end of the cutting device main body 34 to regulate the rising end of the rotary cutting blade 3. The other limit switch 43 abuts on a dog 45 provided on the cutting device body 34 via a bolt 44 so as to be adjustable in position, and regulates the lower end of the rotary cutting blade 3 (see FIG. 8). Further, in order to prevent the rotary cutting blade 3 from descending beyond the descending end regulated by the limit switch 43, the cutting device body 34
A stopper 47 that contacts the stopper bolt 46 provided on the support base 31 is provided on the support base 31 (see FIG. 7).

[0019] As is apparent from FIGS. 1 and 9, the chute 6 is provided with a gridiron shaped chute body 51 is disposed in parallel a plurality of bars, one of the chute body 51
A gate storage box 5 is provided near the end. That shoot book
The one end of the body 51, that is, the end on the side of the sprue storage box 5 , is pivotally supported by a bracket 53 provided on the base 1 via a pivot 52 extending in the left-right direction. Shoot body 51
Is located directly below the rotary cutting blades 3, 3 when its other end is lowered.
And the gate W ₁ cut by the rotary cutting blades 3, 3
In a horizontal position.

A frame 54 is erected on the base 1 so as to straddle the upper portions of the left and right cutting devices 4 _L and 4 _R (see FIGS. 2 and 3).
Output rod 55 ₁ of 5 is connected to a bracket 56 provided on the chute body 51. Accordingly, when the cylinder 55 is contracted and driven, the chute body 51 is pivoted about the pivot 52.
From the horizontal posture ( solid line position in FIG. 9 ) , the other end is turned off.
It swings to the inclined posture (the position of the chain line ) rising to the side of the cutting blades 3 and 3 .

Bracket 5 provided at the lower end of cylinder 55
7 has an output rod 55
A slide rod 59 connected to the lower end of ₁ is slidably fitted. The bracket 57 has two limit switches 6
When the dog 62 provided on the slide rod 59 contacts one of the limit switches 60, it is detected that the chute main body 51 has reached the solid line position in FIG. When the dog 63 comes into contact with the other limit switch 61, it is detected that the chute body 51 has reached the chain line position in FIG.

Next, the operation of the embodiment of the present invention having the above-described configuration will be described.

First, the reversing device 2 is set in the state shown in FIGS. 1 to 3, the casting W is placed on the upper surface of the clamp plate 19 so that the gates W ₁ ... Subsequently, the cylinder 21 is extended and driven to raise the clamp plate 19, and the casting W is clamped between the clamp plate 19 and the clamp arm 22. From this state, cylinder 1
5, the reversing frame 13 clamping the casting W is reversed by 90 ° around the reversing axis 12 as shown in FIG.
The stopper 16 stops at a position where the stopper 16 contacts the stopper bolt 17. As a result, the casting W is reversed to the cutting position facing the sprue W ₁ ... are laterally from removable posture facing up sprue W ₁ ... it is.

[0024] Then, by driving the motor 28 and 28 of the left and right of the cutting device 4 _L, 4 _R, driving pulley 39, the endless belt 40, 40, via the driven pulley 37 and the spindle 36 rotates The cutting blades 3, 3 are rotationally driven.
When the cylinders 35, 35 are extended and driven in this state, the cutting device main bodies 34, 34 swing around the swing shafts 33, 33,
The rotary cutting blades 3, 3 descend toward the casting W. In the process of rotating cutting blades 3, 3 is lowered toward the casting W, 2 pieces of sprue W _1, W ₁ to the left of the castings W in the cutting position is cut by the rotating cutting blade 3 of the cutting device 4 _L of the left , The two right gates W ₁ , W ₁ are the rotary cutting blades 3 of the right cutting device 4 _R.
Cut by

Chips generated when the gates W ₁ are cut by the rotary cutting blades 3, 3 fall through a gap in the horizontal chute main body 51 in a horizontal posture, and the chip storage below the chips. It is deposited inside the box 7. Further, the sprue has fallen is disconnected from the casting W W ₁ ... is being received by the chute body 51 in the horizontal position, after to return the rotating cutting blade 3, 3 upward, the chute body cylinder 55 contracted driven to 51 is inclined from horizontal position ( solid line position in FIG. 9 )
(The position of the chain line ) , the gates W ₁ ... On the chute main body 51 slide down on the chute main body 51 and fall into the inside of the grate storage box 5 and are discharged. Thus, the chips and the gates W ₁ ... Can be automatically selected and discharged to the chip storage box 7 and the gate storage box 5 collectively.

When the cutting of the above-mentioned gates W ₁ .
The reversing frame 13 of the reversing device 2 is returned to the original position, and the clamp plate 19 is lowered to release the clamp.
Is paid out.

[0027] In Thus, it carries the casting W relative to the clamp plate 19 of the reversing device 2, and in the work of simply unloading the castings W from the clamping plate 19, the sprue W ₁ ... cutting the castings W automatically Work efficiency is improved and labor is saved.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made.

[0029]

As described above, according to the first aspect of the present invention, in the gate cutting device, the rotary cutting at the time of descent is performed.
Hot water that is below the blade and cut by the rotary cutting blade
And a chute to receive the mouth with water flat attitude, one end of the chute
With a sprue storage box arranged near the club,
When the rotary cutting blade is raised, the other end rises to the rotary cutting blade side
It is configured so that it can be tilted between a tilting posture and a horizontal posture.
The tip of the chute moves over the chute
As it was made to fall down and be discharged into the grate storage box,
Efficiently put the cut sprue into the sprue storage box through the chute
Automatic collection, improving the efficiency of the collection work
Can be contributed to.

In addition, the chute is horizontal when the gate is cut.
It is held in the posture, and it is inclined only when the gate is discharged after cutting.
Therefore, the chute and the ascending and descending rotary cutting blade are
As close as possible up and down while avoiding mutual interference
And the overall system is made more compact.
It is.

According to the second aspect of the present invention, the chute is formed in the shape of a ladder and has a horizontal posture.
The chip storage box is located below the
The raw chips are passed through a chute-shaped chute in the chip storage box.
And the chips are collected by a chute.
In the horizontal position (so that
), It automatically sorts out the chips and the gate
Separately and efficiently collect the chips into a swarf storage box and a gate storage box
Can be

[Brief description of the drawings]

FIG. 1 is an overall plan view of a gate cutting device.

FIG. 2 is a view in the direction of arrows in FIG. 1;

FIG. 3 is a view in the direction of arrows in FIG. 1;

FIG. 4 is an enlarged view of a main part of FIG. 2;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is an enlarged view taken along line 6-6 of FIG. 5;

FIG. 7 is an enlarged view in the direction of arrow 7 in FIG. 1;

FIG. 8 is an enlarged view in the direction of arrow 8 in FIG. 1;

FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 2;

[Explanation of symbols]

W Casting W ₁ Gate 2 Reversing device 3 Rotary cutting blade 4 _L cutting device 4 _R cutting device 5 Gate storage box 6 Chute 7 Chips storage box

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23D 45/04 B23D 47/04 B23D 55/04

Claims (2)

(57) [Scope of request for utility model registration] 1. A cast product (W) the template was then clamp (W)
Sprue surface (W ₁₎ said attaching and detaching position and sprue which is directed upward (W ₁₎ is reversing device for reversing the between the cutting position facing the side (2), a disk-shaped rotating cutting blade (3) rotary cutting blade is moved up and down in the plane of rotation of (3), lowering the cut obtained <br/> Ru cut during the casting (W) of the sprue (W ₁₎ the rotary cutting blade (3) in the cutting position device contact to (4 _L, 4 _R) and sprue cutting device provided with
And located below the rotary cutting blade (3) at the time of descending,
The gate (W ₁ ) cut by the rolling cutting blade (3 ) is horizontal
The shot (6) received by the force and one of this shot (6)
A sprue storage box (5) disposed near the end, wherein the chute (6) is used when the rotary cutting blade (3) is raised.
The other end rises toward the rotary cutting blade (3).
And the horizontal attitude, the tilting mechanism can be tilted.
When the gate (W ₁ ) on the chute (6 ) falls,
Drop onto the gate (6) and drop into the sprue storage box (5).
A spout cutting device, which is provided. 2. The chute (6) is formed in the shape of a pen.
When the gate is cut below the chute (6) in a horizontal position
The sprue cutting device according to claim 1, characterized in that a chip storage box (7) for receiving the chips generated in the box is provided.