JPS646865B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mold disassembly device.

Conventionally, to remove a cast product from a sand mold, the poured mold is separated into casting sand and the cast product using the top surface of a grate of a vibrator, and then the cast product is removed using a pusher cylinder.
Either push the top surface of the grate to the other side, or use a vibrator with a width and frequency selected for sand separation and feeding. I'm trying to send it out. However, in the former, when extruding, the casting gets caught on the top surface of the grid-like grate and breaks the piston rod of the pusher cylinder, and in the latter, the amplitude and frequency are tailored for sand separation and feeding. The acceleration was large, and collisions with the top surface of the grate caused dents in the casting.

The present invention aims to solve these problems.

The configuration of the present invention will be explained below based on examples. Reference numeral 1 denotes a four-station circular mold disassembling device installed on the top surface of the base frame 2, which consists of a first vibrating station 3, a second vibrating station 4, a reversing station 5, and a spare station, arranged concentrically at 90 degree intervals. 6 are installed respectively. At the first and second vibration stations 3 and 4, a lattice-shaped grate 9 is elastically supported on the upper surface of the base 7 via a spring 8, and a vibrator 10 is attached to the side surface of the grate 9. Machines 11 are installed respectively.

Further, at the reversing station 5 position, a rack 13 is fixedly connected to the tip of the piston rod 12a of the rack cylinder 12, and the rack 13 and pinion 14 are connected to each other.
A reversing machine 18 is installed, which is rotatably supported near both ends by bearings 15, and has a reversing shaft 16 coaxial with the pinion shaft and having a plurality of reversing forks 17 protruding horizontally and perpendicularly to the shaft. The reversing fork 17 is turned outward via the pinion 14 by the actuation of the rack cylinder 12.

Reference numeral 19 denotes a mold transport conveyor in which a plurality of poured molds 20 are lined up, and is provided in connection with the first vibration station 3. Reference numeral 21 denotes an oscillating conveyor, which is extended outside the reversing station 5. Reference numeral 22 is installed upright at the center of the circle-shaped mold disassembling device 1, and its lower end is connected to the base frame 2.
It is rotatably supported by a support bearing 23 attached to the upper surface and a support bearing 25 attached to the lower surface of the ceiling frame 24 at a position near the top, and a fixing clutch 22a is attached to the upper end of the ceiling frame 24 projecting upward. At a lower position of the vertical rotation axis 22, a guide frame 28 consisting of an upper plate support plate 26 and a lower plate support plate 27 vertically supports the centers of the upper plate and lower plate support plates 26 and 27, respectively. It is fitted onto the rotating shaft 22 and connected at both ends with guide bars 29, and the upper support plate 2
6 and the lower plate support plate 27 is a rotary plate 30.
A rotating fork 32 has a configuration in which a plurality of forks 31 are horizontally protruded from each of the four sides formed at equal intervals on the circumference of the rotary plate 30. They are fitted into the guide bar 29 so as to be able to slide upwardly and downwardly, respectively.
The rotating fork 32 stopped at each of the station positions 3, 4, 5, and 6 stops with the fork 31 inserted between the grid-like grates 9, and the grate 9 and the fork 31 do not interfere with each other. . Reference numeral 33 denotes an elevating cylinder attached downward to the upper surface of the upper support plate 26. A rotary fork 32 is fixedly connected to the tip of a piston rod inserted through the upper support plate 26. rotating fork 3
2 is adapted to be slid up and down along a vertical rotation shaft 22 and a guide bar 29. 34
A clutch cylinder is supported by a fixed frame (not shown), and a piston rod of the clutch cylinder 34 is rotatably supported, and a movable clutch 35 is connected to the tip of the piston rod. , can be engaged and disengaged from the fixed clutch 22a.

A drive cylinder 36 is rotatably supported on the upper surface of the ceiling frame 24 via a cylinder bracket 37, and a rotary arm (not shown) is connected at one end to the piston rod of the clutch cylinder 34 at the tip of its piston rod 36a. When the clutch cylinder 34 is operated and the drive cylinder 36 is operated with the movable clutch 35 engaged with the fixed clutch 22a, the rotating fork 32 is rotated intermittently at 90 degree intervals. It is becoming more and more like this. In addition, 38 is shoot, 3
9 is a casting sand recovery conveyor, and 40 is a guide plate.

Next, the operation of the device configured as described above will be explained. In the illustrated state, the poured mold 20 has been transported on the mold transport conveyor 19.
When the cast mold 20 is placed on the vibrator 11 at the first vibrating station 3, the poured mold 20 is vibrated by the operation of the vibrator 11, and the cast product and the molding sand are largely separated.

Next, the elevating cylinder 33 moves upward, and the rotating fork 32 moves vertically to the vertical rotating shaft 22 and the guide bar 2.
9, and the casting on the upper surface of the grate 9 is transferred to the upper surface of the fork 31, the clutch cylinder 34 is expanded and the fixed clutch 22
The moving clutch 35 is engaged at the position a, and the drive cylinder 36 is extended to move the rotating fork 32.
is rotated 90 degrees about the vertical rotation shaft 22 in the direction of the arrow along with the guide frame 28, and the cast product on the upper surface of the grate 9 at the first vibration station 3 position is rotationally moved to the second vibration station 4 position and stopped. After stopping, the lifting cylinder 33 reversely operates to move the rotating fork 32 to the vertical rotating shaft 22 and the guide bar 2.
9, the cast product on the upper surface of the fork 31 is moved to the vibrator 1 at the second vibration station 4 position.
Transfer it to the top of Great 9 of No. 1. Then, by the operation of the second vibrator 11, a vibration effect is imparted to the cast product to which some foundry sand has adhered, and the foundry sand and the cast product are reliably separated.

In addition, the molding sand separated from the cast product is stored in chute 3.
8 and is collected on a collection conveyor 39.

Next, when the elevating cylinder 33 is operated upward and the casting on the upper surface of the grate 9 is transferred to the upper surface of the fork 31, the engagement between the fixed clutch 22a and the movable clutch 35 is released by the reverse operation of the clutch cylinder 34, and at the same time, The drive cylinder 36 is actuated in reverse to retract the piston rod 36a to its original position. After retracting, the clutch cylinder 34 is extended again, and the fixed clutch 22a and the movable clutch 35 are
At the same time, the driving cylinder 36 is extended and further rotated by 90 degrees in the direction of the arrow, and the cast product separated from the molding sand at the second vibration station 4 position is rotated to the reversing station 5 position and stopped. Then, the rack cylinder 12 is extended, and the reversing fork 17 is reversed outward about the reversing shaft 16 via the rack 13 and the pinion 14, and the cast product on the upper surface of the reversing fork 17 is discharged onto the oscillating conveyor 21. It is conveyed to the outside via an oscillating conveyor 21.

In this way, the poured mold 20 passes through the first vibrating station 3 and the second vibrating station 4, and is reliably separated into a cast product and molding sand one after another, and the cast product separated from the foundry sand is transferred to the reversing machine 18. Then, it is discharged onto the oscillating conveyor 21 and carried out.

As is clear from the above description, according to the present invention, once the casting is attracted to the upper surface of the grate,
There is no breakage of the piston rod of the pusher cylinder, and there is no need to increase the acceleration of the vibrator to feed the casting, so there is no possibility of dents in the casting due to collision with the top surface of the grate. The effect of contributing to this type of industry is significant.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a side view of FIG. 1. 3: First vibration station, 4: Second vibration station, 5: Reversing station, 6: Spare station, 9: Grate, 11: Vibrator, 17:
Reversing fork, 18: Reversing machine, 19: Mold conveyor, 20: Poured mold, 30: Rotating plate, 3
1: Fork, 32: Rotating fork.

Claims (1)

[Claims] 1 Rotating forks, each of which has a plurality of forks protruding horizontally from each of the four sides formed at equal intervals on the circumference of the rotating plate, are installed so that they can rotate intermittently in 90 degree increments, and are also slidable in the upward and downward directions. The rotary fork is provided movably, and on a circle concentric with the center of rotation of the rotary fork,
a first vibration station, a second vibration station,
A reversing station and a preliminary station are arranged in order at equal intervals, and each of the first and second vibration stations has a structure in which a grid-like grate is supported on the top surface of the base via a spring-like elastic body. A vibrator is installed, and the reversing station is equipped with a reversing machine having a reversible reversing shaft and a plurality of reversing forks protruding inward in a direction horizontally perpendicular to the axis; 1. A mold dismantling device, characterized in that a mold transport conveyor for poured molds is connected to a vibration station.