JPS6010777Y2 - Casting sprue removal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sprue removal device for castings in a casting box.

Conventionally, in the casting of small products, a large number of molds were housed in a casting box, each with a sprue, and after pouring and solidifying the casting box, the casting box was laid down to separate the molding sand and cast the casting. The sprue is manually disassembled by hitting it with a one-handed hammer or the like, but the working environment is extremely hot and dusty, which has the drawbacks of severe worker fatigue and difficulty in automation.

As it happens, in the case of a casting held in a green sand mold, the sprue can be removed by slowly introducing a needle-like weir breaking tool and pressing or colliding with the weir of this casting; If each casting is held by aggregate such as steel shot filled in a box,
Since this aggregate prevents foreign matter from entering, it is difficult to apply a weir-breaking tool or the like.

The present invention was devised in view of these drawbacks, and involves moving the casting box that has been poured into a mold and solidified while remaining in the casting box in one direction. Using an impact tool that is swingably held on the frame so as to follow the sprue, impact force such as pressing or hammering is applied to the top surface of the sprue to sequentially break the sprue, simplifying the work and achieving continuous automation. It is an object of the present invention to provide a casting sprue removal device designed to eliminate the above-mentioned drawbacks.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

1 is a sprue removal device.

The sprue removal device supports an impact tool 4 such as a concrete breaker, which is disposed above the casting boxes 3, 3A, 3B, etc., which are conveyed by the conveyor 2, and the impact tool. a frame 5; the frame and the impact tool 4;
and the impact tool is placed between the casting boxes 3, 3A, 3B.
. . . A mounting mechanism 6 that is attached to the frame 5 so as to be swingable in the transport direction; a driving means 7 such as an air compressor that drives the impact tool 4; The main cylinder 10 is configured to move up and down between the main cylinder 10 and the main cylinder 9.

More specifically, the frame 5 is formed of a fixed frame 12 erected on a pedestal 11 and a movable frame 13 housed inside the fixed frame. The piston rod 15 of the main cylinder 10 fixedly attached to the movable frame 13
Guide rollers 16, 16 that roll and support each side edge of the
. . . is arranged so as to be vertically movable with respect to the fixed frame 12.

The mounting mechanism 6 includes clamping tubes 17, 17 and tightening ports 18, 18, which are connected by a curved upper support, in order to hold the upper and lower ends of the impact tool 4. The plate 19 and the lower support plate 20, and the through holes 22, 2 that are fitted into the side ends of the upper support plate 19 and bored in the support base 21 in the middle of the movable frame 13.
Mounting members 23, 23, etc., such as double-threaded bolts, which are loosely engaged with and extend upward from 2..., and the impact tool 4 are attached to the movable frames 1 and 13 by casting. A spring 26.27 is provided with a washer 24.25 and mounted between the upper end of the mounting member 23 and the upper surface of the support base 21 so as to be swingable in the conveying direction. There is.

Furthermore, there are holes (28.2) at both upper and lower ends of the mounting member 23.
8 is screwed and fixed, and a cotter pin 29 is installed passing through the nut and the mounting member 23.

30.30... is the guide roller 16, 16
31 is a hammer attached to the tip (lower end) of the impact tool 4; 32 is a guide frame for fixing the movable frame 13 at the non-operating position 9 of the impact tool 4; A stopper, 33 is an auxiliary cylinder, 34 is an operation panel, 35 is a solenoid valve that is linked to the operation panel and drives the main cylinder 10 and the auxiliary cylinder 33, and 36 is an air pipe that connects the impact tool 4 and the driving means 7. It is.

The casting boxes 3, 3A, 3B, etc. contain the product 37.
, a weir 38 and a sprue 39 are accommodated, and the periphery thereof is backed up with aggregate 41 such as steel shot.

The conveyor 2 is driven by a drive means (not shown) and continuously conveys the casting boxes rightward in FIG. 1.

And the casting boxes 3, 3A, 3B, which are continuously moving...
A fixed position (not shown) as a detection means,
It is detected by the stop and pass limit switches, and the impact tool 4 is moved up and down and impacted by the timer, and each sprue 39, 39, etc. in the casting box is removed within a predetermined tact ( 1.5 per casting box
It is set to complete in ~2.0 minutes).

42 is a guide roller.

The mounting structure in which the springs 26 and 27 are interposed on the mounting member 23 may be replaced with a bushing 43 made of rubber or other flexible material as shown in FIG.

Next, the operation of the present invention will be described.

The casting box 3A carried in from the rear (left side in FIG. 1) by the conveyor 2 is detected by a fixed position limit switch (not shown), and the auxiliary cylinder 33 linked to the fixed position limit switch is operated to stop the casting box 3A. 32 is released.

Then, after a few seconds by the timer, the movable frame 1
3 is lowered by the main cylinder 10, the impact tool 4, which has already been driven, moves from the non-actuated position 9 to the activated position 8.
The impact tool 4 descends to reach the upper surface of the sprue 39, impacts and presses the sprue, and the hammer 31 follows the sprue 39 which is synchronized with the movement of the casting box 3A, causing the impact tool 4 to tilt (position shown by the chain line in FIG. 5). After breaking and separating the sprue 39 and weir 38 from the product 37, the impact tool 4 that tilts it returns to its original position by the restoring force of the springs 26 and 27, and the main cylinder 10 moves the movable frame 13 upward. to the non-operating position 9.

Thereafter, when the time corresponding to the interval between the sprues has elapsed, the hammer 31 performs the same operation as described above, and if there are other sprues 4 (not shown) in the casting box 3A, they are sequentially removed, and the removal of the sprues is completed. The position of the casting box 3A at this time is detected by a stop limit switch (not shown), and the movable frame 13 in the non-operating position 9 of the impact tool 4 is stopped by the stopper 32.

It should be noted that if it takes a long time for the casting box 3A to pass, this is an abnormal condition, so this is detected by a passing limit switch (not shown) and the apparatus is stopped.

Furthermore, the sprue 39 of the subsequent casting box 3B is also removed by the same operation as described above.

With the above-mentioned configuration, the present invention can continuously remove the sprue while the casting is stored in the casting box, which not only facilitates automation and significantly improves work efficiency, but also greatly improves the work environment. It has the excellent effect of improving

[Brief explanation of drawings]

The drawings illustrate an embodiment of the device of the present invention, and FIG. 1 is a front view of the sprue removal device, FIG. 2 is an enlarged side view taken along line n-■ in FIG. 1, and FIG. 4 is a sectional view showing another embodiment of the mounting structure of the mounting member, FIG. 5 is a front view illustrating the operating condition of the impact tool, and FIG.
FIG. 3 is a plan view of the frame along line VI-Vll in the figure. 1...Gate removing device, 2...Conveyor, 3...Casting box, 4...Impact tool, 5
...Frame, 6...Mounting mechanism, 7.
... Drive means, 8... Operating position, 9...
...Non-operating position, 10...Main cylinder, 1
2... Fixed frame, 13... Movable frame 1. ．． 19... Upper support plate, 20.
...Lower support plate, 21...Support stand, 23...Mounting member, 26°27...
Spring, 37... Product, 38...
Weir, 39... sprue, 40... casting.

Claims (5)

[Scope of utility model registration request] (1) A conveyor that continuously conveys the casting box in which the mold is stored in the casting box, the casting box is filled with the mold backed up with aggregate such as steel shot, and the casting box is placed on the conveyor. an impact tool disposed above the line of movement of the casting box and capable of continuously applying an impact force; a frame supporting the impact tool; provided between the frame and the impact tool; When the impact tool is in contact with the sprue of the casting, the impact tool is attached to the frame so that it can swing in the transport direction of the casting box in order to make the impact tool follow the sprue of the casting in the moving casting box. A mounting mechanism for attaching the impact tool, a driving means for driving the impact tool, a detection means for detecting movement of the casting, and a mounting mechanism for connecting the impact tool between an operating position in which the impact tool can be brought into contact with a sprue of the casting and a non-operating position in which the impact tool is evacuated from the said position. A casting sprue removal device characterized by comprising a cylinder which is moved up and down and holds the impact tool at the operating position for a predetermined time based on a signal from the detection means. (2) The casting sprue removing device according to claim 1, wherein the frame is formed of a fixed frame and a movable frame. (3) The casting according to claim 1, wherein the frame has a support base, and the mounting mechanism includes a support member for supporting an impact tool and a spring between the support member and the support base. Sprue removal device. (4) The frame has a support base above the impact tool, and the mounting mechanism is attached to the support plate of the impact tool provided between the impact tool and the support base, and is attached to the support plate and is drilled into the support base. a mounting member extending upward through the provided through hole;
The casting sprue removal device according to claim 1, further comprising a spring installed between the upper end of the mounting member and the upper surface of the support base. (5) The casting according to claim 1, wherein the mounting mechanism includes an upper support plate, a lower support plate, a mounting member, and a spring, and the impact tool is mounted to the frame via the spring. Sprue removal device.