JPS6335391B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to shot blasting for cleaning the casting surface of a cast product (hereinafter simply referred to as a product) that has undergone a demolding process. The invention relates to a device for introducing products to be processed.

Conventional technology Conventionally, the loading of products into shotblasting is generally carried out by tilting a box-shaped bucket loader, which is installed opposite the product entrance of the shotblast, toward the product entrance after receiving the product. However, in this method, products must be loaded into the bucket loader using a crane, forklift, etc., which is troublesome. Therefore, a product receiving box is provided separately from the bucket loader that can be taken in and out of the bucket, and the product is placed in the product receiving box at a separate location, inserted into the bucket loader, and then tilted together with the bucket loader to load the product. A separated bucket type (cartridge type) has also been proposed.

However, in all of the above methods, products are loaded by pulling up the bucket loader along a pillar or rail using a chain and tilting it toward the product input port. As a result, the product may hang up during loading and may remain in the bucket loader or product receiving box, and there is a drawback that the above-mentioned residual phenomenon occurs particularly when the product is handled with a weir attached.

OBJECT OF THE INVENTION An object of the present invention is to provide a product loading device for shot blasting that eliminates the drawbacks of the conventional devices described above and can reliably load the product without leaving any product in the bucket loader or product receiving box. It is in.

Structure of the Invention The present invention involves loading a product receiving box containing products into a bucket loader, and then lifting the box to a substantially horizontal position using a first cylinder.
Further, by repeating the tilting operation for loading the product several times using the second cylinder, vibration is applied to the product and the product is loaded.

Embodiments Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In the figure, 1 is an apron conveyor type shot blaster, and a product entrance 3 formed in a cabinet 2 can be opened and closed by a door 6 that is raised and lowered by a hoisting drum 5 along a columnar rail 4. There is. An apron conveyor 7 that rotates at a slow speed is installed inside the cabinet 2.
While the product is being agitated by the apron conveyor 7, shot material (steel slabs) is projected by an impeller 8 to clean the casting surface.

Next, shot blast the product to be cleaned.
A product loading device for loading products into the cabinet 2 will be explained. As shown in the figure, the bucket loader 9, which is disposed facing the product entrance 3 of the cabinet 2 at a predetermined distance, has a substantially groove-shaped bucket having a chute portion 9a on the upper side and a receiving box storage portion 9b on the lower side. It is formed in the receiving box storage part 9.
A groove-shaped rail 10 is fixed horizontally to both inner surfaces of b. On the other hand, a rectangular product receiving box 11 for storing products can be moved in and out of the receiving box storage section 9b of the bucket loader 9 via, for example, a self-propelled carrier 12 when the bucket loader 9 is in an upright state. Horizontal projecting portions 13 that can be engaged with the rails 10 of the receiving box storage portion 9b at the time of loading are provided on the outer surfaces of both sides.

Therefore, the bucket loader 9 has two fluid pressure cylinders 14,
15 performs a tilting operation for loading the product. That is, a pair of left and right swinging arms 17 having a triangular shape are attached to the upper part of a pair of left and right support stands 16 erected on the floor so that one end thereof can swing around a horizontal axis via a rotation shaft 18. A bracket 19 fixed to the belly plate of the bucket loader 9 is supported at the top end of the swing arm 17 via a pin 20 so as to be rotatable around a horizontal axis. On one side between the left and right support stands 16 is a first
A cylinder 14 is arranged vertically, and the cylinder 14 is rotatably supported by a U-shaped bracket 21 fixed to one of the support stands 16 via a pin 22 at approximately the center thereof. The tip of the piston rod 14a is connected to one swing arm 17 via a pin 23. Further, the second cylinder 15, which is disposed laterally at approximately the center between the left and right swing arms 17, is rotatable via a pin 25 on a cylinder bracket 24 whose one end is fixed to the rotation shaft 18. The tip of the piston rod 15a is connected to the bracket 19 of the bucket loader 9 via a pin 26. Note that 27 is a vibrating conveyor for carrying out products that have been cleaned.

This embodiment is configured as described above,
The effect will be explained below.

When a specified amount of products (with weirs) that have undergone the demolding process and the cooling process are placed in the product receiving box 11,
The receiving box 11 is mounted on the transport vehicle 12 and is stored in the receiving box storage section 9b of the bucket loader 9 and is on standby.
3 is engaged with the rail 10 of the bucket loader 9. On the other hand, when the projecting work of the shot material is completed in the shot blast 1, the door 6 is raised by the hoisting drum 5 to open the product entrance/exit 3, and the apron conveyor 7 is rotated in the opposite direction to produce the product. is carried onto the vibrating conveyor 27.

Thus, the shot blast 1 cabinet 2
When the container is empty and the next product is ready to be received, the first cylinder 14 is extended and the bucket loader 9 and product receiving box 11 are moved to the fulcrum (rotation axis) of the swing arm 17, as shown in FIG. 18) is tilted upward with a large radius of rotation, and changes from a standing posture to a nearly horizontal posture. Next, the second cylinder 15 is extended, and the bucket loader 9 and product receiving box 11 are further moved to the fulcrum (pin 20) of the bracket 19.
It is tilted with a small rotation radius around the center of rotation.
In other words, the bucket loader 9 has its chute section 9a.
is tilted so as to enter the product entrance/exit 3 of the shot blast 1. Therefore, the product slides or rolls on the chute portion 9a and is dropped onto the apron conveyor 7 in the cabinet 2.

Then, after an appropriate period of time (time required for dropping the product), the second cylinder 15 is contracted to return the bucket loader 9 to its original, almost horizontal position, and then extended again to tilt. That is, the bucket loader 9 repeats the tilting action for loading the product two or three times, and as a result, when the bucket loader 9 is tilted for the first time, the product may become entangled with the product receiving box 11 due to, for example, mutual entanglement.
Even if bridging occurs inside or in the chute portion 9a, the bridging phenomenon will be canceled by the vibrations accompanying the repetition of the tilting action, and will be thrown in without remaining during the next tilting. In addition, at this time, since there is some wobbling between the bucket loader 9 and the product receiving box 11, which have a double box structure, there is a shock between them, and the impact does not effectively act on the product receiving box 11 itself and the bucket loader 9. , which is extremely effective in removing bridging from the above-mentioned products.

When the product loading is completed, the second cylinder 15 and the first cylinder 14 are sequentially contracted, the bucket loader 9 is returned to its original position, and the empty product receiving box 11 is transferred to the waiting conveyor. Trolley 1
2 to be loaded on board. On the other hand, in the shot blast 1, a predetermined cleaning action is performed with the door 6 lowered and the product entrance/exit 3 closed.

Note that the stop positions of the first and second cylinders 14 and 15 that are operated for loading the product, that is, the tilting position of the bucket loader 9 are regulated by a limit switch.

Effects of the Invention As described in detail above, the present invention has a structure in which the bucket loader loaded with the product receiving box is raised and tilted to a predetermined position, and the tilting action for loading the product is repeated multiple times. , it is possible to prevent products from remaining due to bridging due to vibrations caused by repeated tilting, and to reliably feed products into shot blasting, especially when products are entangled with each other, such as products with complex shapes or products with weirs. This is effective when bridging is likely to occur due to misalignment.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway overall side view including shot blasting, FIG. 2 is a rear view showing the tilting mechanism of the bucket loader, and FIG.
The figure is a front view showing the bucket loader and product receiving box.
FIG. 4 is an explanatory diagram showing the tilting operation of the bucket loader. 1...Shot blast, 3...Product inlet,
9...Bucket loader, 10...Rail, 11...
...product receiving box, 13...projection, 14...first cylinder, 15...second cylinder, 17...swing arm.

Claims (1)

[Claims] 1. It is installed so as to be tiltable facing the product entrance/exit of the shot blast, and has a chute part on the upper side and a receiving box storage part with groove-shaped rails fixed horizontally to both walls on the lower side. a product receiving box that is loosely fitted with the rail and held in a receiving box storage portion of the bucket loader in an upright state so as to be removable and removable; A product loading device for shot blasting, comprising a first cylinder that tilts a bucket loader and a second cylinder that repeatedly tilts a bucket loader between a substantially horizontal position and a forward tilted position.