JP2542388Y2 - Falling sand recovery equipment for belt conveyors - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus suitable for collecting molding sand falling from a belt of a belt conveyor.

[0002]

2. Description of the Related Art In a molding plant, a large number of belt conveyors are used as a casting sand conveying device. By the way, especially in a long belt conveyor, the return side of the endless belt is supported by a number of idlers arranged side by side along the belt, and the molding sand adhered to the surface of the belt is removed by the idler. The exfoliated and exfoliated foundry sand was falling as it was. Along with this, there have been problems such as the equipment being buried in foundry sand and the working environment being deteriorated. Also, various scrapers have been proposed to scrape the part of the belt wrapping around on the return side so that the molding sand attached to the belt does not wrap around to the return side.However, in such equipment, the scraper wears out. Frequent maintenance was required. In addition, if the adjustment of the scraper is mistaken by one step, there is a problem that the belt is worn, or the belt is cut, which causes adverse effects. The present invention has been made in order to solve the above-mentioned problem, and it is possible to easily and reliably collect molding sand falling from a belt conveyor through a scraper without abrading or cutting the belt. The purpose is to provide equipment that can be used.

[0003]

In order to achieve the above object, a falling sand collecting facility according to the present invention is provided with a gutter-shaped sand receiving member extending along the belt conveyor below the belt conveyor. On the bottom surface of the receiving member, a self-propelled bogie equipped with a scraper mechanism having a scraper that can move up and down,
The sand receiving member is disposed so as to be able to run in the longitudinal direction.

[0004]

In the belt conveyor falling sand collecting apparatus thus constructed, the scraper is brought into contact with the bottom surface of the sand receiving member when the self-propelled truck moves forward, and the scraper is brought into contact with the sand receiving member when returning. When the scraper mechanism is reciprocated via the self-propelled carriage so as to separate from the bottom of the sand, the molding sand that has fallen from the conveyor belt and accumulated on the sand receiving member is removed by the scraper onto the bottom of the sand receiving member. Are extruded sequentially to a predetermined location while being scraped. As a result, the molding sand is collected.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. 1 and 2. As shown in FIG. 1 which is a sectional front view of a part, a belt conveyor 3 having an endless conveyor belt 1 supported by idlers 2 and 2 is shown below. Is provided with a gutter-shaped sand receiving member 4 extending in the left-right direction along the belt conveyor 3. As shown in FIG. 2 which is an enlarged view of a part A in FIG. 1, a self-propelled truck 7 having wheels 6 and 6 rotated by a first motor 5 is provided on the bottom surface of the sand receiving member 4. The self-propelled carriage 7 is provided with a scraper mechanism 8, which is arranged so as to be able to run in the longitudinal direction of the member 4. In the scraper mechanism 8, links 11 and 12 are supported by the front and rear sides (left and right sides in FIG. 2) of the self-propelled carriage 7 via support shafts 9 and 10 so as to be vertically rotatable, respectively. Scrapers 13 and 14 are attached to the distal end of link 12, and slots 15 and 16 are attached to the base end of links 11 and 12.
Are formed, and the long holes 15, 1 and 1 of the links 11 and 12 are formed.
6, a joint pin 18 which is turned in a vertical plane by a second motor 17 mounted on the self-propelled carriage 7 is inserted, and the scrapers 13 and 14 are moved up and down by the driving of the second motor 17, It can be contacted and separated on the bottom surface of the sand receiving member 4. The first and second motors 5 and 17 are supplied with electric power by a cable 20 wound around a pulley 19 mounted on the right end of the belt conveyor 3. In addition, the belt conveyor 3
A sand supply port 21 for charging molding sand is formed on the upper right side of the belt, and a sand discharge port 22 for discharging molding sand is formed below the left end of the belt conveyor 3, and a sand discharge port 22 is formed below the sand discharge port 22. A hopper 23 is provided.

Next, the operation of the equipment constructed as described above will be described. The molding sand introduced from the sand supply port 21 is conveyed to the hopper 23 by the belt conveyor 3 and adheres to the conveyor belt 1 of the belt conveyor 3. Is separated by the idlers 2 and 2 and falls on the bottom surface of the sand receiving member 4 and accumulates. In this state, the second motor 17 is driven to rotate the joint pin 18 by a required angle, and the scrapers 13 and 14 are lowered until the scrapers 13 and 14 contact the bottom surface of the sand receiving member 4. When the first motor 5 is driven, the self-propelled carriage 7 moves the scraper 1
The casting sand on the sand receiving member 4 is moved to the left while scraping by 3 and 14. Scraper 13 is sand outlet 2
When the vehicle comes to a position above the second position, the driving of the first motor 5 is stopped to stop the movement of the self-propelled carriage 7. As a result, the molding sand on the bottom surface of the sand receiving member 4 is pushed into the hopper 23 by the scrapers 13 and 14. Thereafter, the second motor 17 is further driven to separate the scrapers 13 and 14 from above the bottom surface of the sand receiving member 4, and then the first motor 5 is driven in reverse to move the self-propelled carriage 7 and the like to the right. .
By repeating the above operation, the molding sand accumulated on the bottom surface of the sand receiving member 4 can be collected by the scrapers 13 and 14.

[0007]

[Effect of the Invention] As is clear from the above description, in the present invention, a gutter-shaped sand receiving member is arranged below the belt conveyor, and a scraper is mounted on the bottom surface of the sand receiving member so as to be vertically movable. Since the self-propelled trolley is arranged so as to be able to run in the longitudinal direction of the sand receiving member, castings dropped from the conveyor belt and accumulated on the bottom of the sand receiving member simply by moving the scraper up and down and reciprocating the self-propelled trolley. The sand can be easily and reliably recovered, and therefore, an excellent practical effect can be achieved such that the facility can be prevented from being buried with molding sand and the working environment can be prevented from being deteriorated.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view showing an embodiment of the present invention.

FIG. 2 is an enlarged detail view of a portion A in FIG. 1;

[Explanation of symbols]

 Reference Signs List 3 belt conveyor 4 sand receiving member 7 self-propelled carriage 8 scraper mechanism 13 14 scraper

 ──────────────────────────────────────────────────続 き Continuing from the front page Examiner Makoto Nagayasu (56) Reference: Japanese Utility Model Application No. Sho 60-100317 (JP, U) Japanese Utility Model Application No. 5-19228 (JP, U) Japanese Patent Publication No. Sho 58-2888 (JP, B2) 55-37537 (JP, Y2) 52-12299 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] 1. A facility for recovering casting sand falling from a belt of a belt conveyor, comprising: a gutter-shaped sand receiving member 4 disposed below the belt conveyor 3 and extending along the belt conveyor 3; A first motor disposed on the bottom surface of the member so as to be able to travel in the longitudinal direction of the sand receiving member;
Self-propelled carriage 7 with wheels 6, 6 rotated by 5
And the scrapers 13, 1, which are mounted on the self-propelled carriage 7 so as to be able to move up and down and can contact and separate on the bottom surface of the sand receiving member 4.
A falling conveyor for belt conveyors, comprising: