JPS62171811A - Positioning mechanism - Google Patents

Abstract

PURPOSE:To automate positioning, by a method wherein, in a positioning mechanism for the large mouthpiece of a drum, a drum, moved with a top plate down, is rotated around a vertical shaft by means of idle rollers placed on the same circumference to position the mouthpiece. CONSTITUTION:When a drum can, moved by means of roller conveyors A and B with a top plate 2 down, are moved to roller groups 22, 24, 26, and 28, the roller groups 22, 24, 26, and 28 are raised to support the edge of the drum can and lift up the drum can in a level higher than those of the roller conveyors A and B. Through driving of driving rollers 26 and 28, the drum can is rotated in the direction of an arrow mark. By detecting a large bore (h) by means of a sensor, not shown, mounted on a lower base plate 40, the driving rollers 26 and 28 are forced into a stop. Thereafter, a base plate 40 is lowered to place the drum can on the roller conveyors A and B. This constitution enables automation of a work.

Description

Detailed Description of the Invention (a) Industrial Application Field The invention of this application relates to a positioning mechanism. More specifically, the present invention relates to a positioning mechanism for a large-diameter mouth, that is, a large tap, among drum can mouths.

(B) Prior art Since the drum can general positioning mechanism according to the present invention is mainly adopted as part of the recycling process for used drums, the following is an outline of the normally adopted drum can recycling process. Explain.

(1) Leveling and pre-treatment process After removing the residue from inside the drum for regeneration, leveling is performed on the unevenness formed on the surface, and the drum is sent to the internal pre-treatment cleaning process. In the internal pretreatment process, a spray nozzle is used to spray cleaning liquid at a constant high pressure into the drum.
Pretreatment cleaning is performed efficiently. The drum is then sent to an external cleaning device, which completely removes any external dirt.

(2) Main processing cleaning and finishing process In the pre-processing process, the drum cans that have been leveled and cleaned inside and out are sent to an automatic washing machine, where the inside is completely cleaned for main processing and removed. Rust, neutralization, degreasing, water washing, rust prevention, etc. are carried out. In this process, a pair of caps of the drum whose interior has been completely cleaned are polished, hereinafter the cap with a large diameter is called a large cap, and the cap with a small diameter is called a small cap. Next, the inside of the can is cleaned for the final time, and an airtightness test is carried out based on the specified standards in a leakage test. Only those that pass the standard are sent to the drying oven. After passing through the drying oven, the drum cans are put on an automatic drying device. After the inside of the can is automatically dried, a final internal inspection is carried out, and the can is sealed into the mouthpiece with a finishing plug. The sealed drum is then completely painted in a complete painting process, and finally handed over to product management.

The present invention relates to a mechanism for positioning the large faucet of a drum used in the main cleaning and finishing process. The positioning mechanism used in the drum recycling process according to the present invention is, firstly, the large opening a of the drum.
A large faucet opened above the drum can below the steel pieces that fall from a chain hook at the end of the elevated track that transports the steel pieces during the injection process. When determining the position of the drum so that position a is located, the second step is to remove the drum that has been internally cleaned with a steel piece, etc. by turning the drum can with its plate 2 (hereinafter referred to as the top plate) downwards to remove the clogged area. Move onto the roller conveyor 6 that can be moved up and down to a known position with the stopper a and the small stopper 0 (a stopper with a diameter smaller than the large stopper a) facing downward, and then move onto the roller conveyor 9, and move to the positioning device 8. In the case where the drum can is positioned to match the mounting position of the large stopper brush α and the small stopper brush β provided on the polishing device IO for polishing the large stopper a and the small stopper α in the next process. , Thirdly, the brushing of the large spout a and the small spout α is done using a polishing machine lO.
After that, the roller conveyor 12 is moved up and down, and once the roller conveyor 12 is lowered, it is moved onto the fixed roller conveyor 18 of the automatic cleaning device 14 for final cleaning. The positioning device 8 is used to adjust the position of the large faucet a to the position of the nozzle 20 in advance so that the nozzle 20 of the drum can rise and spray cleaning liquid into the large frame opening a of the drum for internal cleaning. They play an important role in the series of drum recycling processes.

However, in the conventional drum recycling process, the only way to position the drum was by manual effort.

(c) Problems to be solved by the present invention The conventional method of manually positioning drums is not only inefficient, but also poses problems such as becoming an obstacle to automating the entire drum recycling process. Ta.

(d) Means and operation for solving the problems Therefore, the present invention aims to solve these problems and provides an automatic positioning mechanism as a means thereof.

A pair of idle rollers and a drive roller interlocked with each other via a gear provided at the end of the shaft are provided on two pairs of brackets that are erected to face each other on a base plate. The base plate is supported so as to be movable up and down by an arm pivotally connected to a pedestal provided below the base plate, and the drive roller is connected to a drive motor by two endless chains, bells, or the like. The pair of idle rollers are disposed on both sides of the roller conveyor, and the pair of drive rollers are disposed inside the roller conveyor.

When the drum is moved on the roller conveyor with the top plate (upper plate) facing downward, the roller group is in the lowered position together with the base. When the moving drum reaches a position where it is sandwiched between two pairs of roller groups, the arm that supports the base plate is raised by the activation of the actuator, so the drum is lifted by the rollers of the roller group, and the drive motor is activated at the same time. The drive roller rotates in a predetermined direction. While the drum is supported by a group of rollers and rotating in a predetermined direction, a sensor device installed at a predetermined position below the drive roller, such as a sensor using light or ultrasonic waves, detects the position of the large stopper of the drum, and the drive motor stops. , as the drive roller stops rotating,
The drum also stops rotating and its large spout is placed in a predetermined position. Of course, the predetermined stopping position of the large faucet can be selected to be optimal for the next process. In this manner, the positioning of the large or small tap opening of the drum is performed.

(Embodiment) Rotatable idle rollers 22 and 24 supported by brackets 21 are provided on both sides of a pair of roller conveyors A and B so as to run perpendicularly thereto and face each other, and between the pair of roller conveyors A pair of drive rollers 2B and 28 supported by a bracket 25 are provided parallel to this. The drive rollers 26, 28 are interlocked by gears 34, 36 mounted on the ends of their respective shafts 30, 32.

Sprocket wheel 3 provided at the end of drive roller 28
8 and a shaft 4 supported by an arm 42 attached to a base plate 40.
The tin rocket wheel 46 attached to the end of 4 has a
Another sprocket wheel 46, on which a first chain 48 is suspended, is also connected to a drive motor 54 with a reduction gear via a second chain 50 and a sprocket wheel 52. The above-mentioned roller plaques) 21 and 25 are fixed on a base plate 40, and this base plate 40 is
A lever 60 pivotally supported by a pedestal 58 installed on the machine base 56 is swung by the operation of an actuator, such as a hydraulic cylinder (not shown), thereby raising and lowering a predetermined distance. 28 also moves down the same distance.

Next, the effect will be explained.

As already explained, the drums moving in the direction of the arrows on the roller conveyors A and H have their top plates 2 on the lower side, so the large spout a and the small spout θ are on the roller conveyor A.
, H directions.

At this time, the roller groups 22, 24, 26, and 28 are disposed below the roller conveyors A and B because the lever 60 is in an inactive state. When the moving drum reaches the second position of the roller group (first
(position shown by the chain line in the figure)) The lever 60 operates and the base plate 40
, the drum is supported by the roller group and lifted up, and the drum is held at a higher position than the roller conveyor. At the same time, the drive motor 54 is started and the drive roller 2
8 rotates in a predetermined direction (arrow direction) together with a motor 54 via a first chain 48, a second chain 50, etc. The drive roller 26 has a shaft 32, a gear 36, a gear 34,
The rotational movement of the drive roller 28 is transmitted via the shaft 30 . The other idle rollers 22, 24 also rotate in the direction of the arrow in accordance with the rotation, and the roller groups 22, 24, 26, 28
supports the drum and rotates it in the same direction. Scheduled large faucet or small faucet (large faucet in this example)
When a sensor device (not shown) provided on the lower base plate at the stop position detects the large stopper of the rotating drum, the drive motor 54 of the positioning device stops operating, and then the base plate 40 is moved up and down. A device, for example a hydraulic cylinder (not shown), operates in the opposite manner to the previous one, lowering the base plate 40 and moving the roller group 22, 24, 26, 28, together with the bracket (21.25) provided thereon, onto the roller conveyor. A,
Lower it to below B. Therefore, the drum can maintain its large stopper a in the planned position, and the roller conveyor A.
H, and is sent to the next process, for example, the plug polishing process or the final cleaning process described above.

In the embodiment of the present invention, the position is determined by keeping the top plate 2 of the drum down, but it is of course possible to determine the position by keeping the top plate 2 up. In this case, the sensor device may be disposed at a predetermined position above the top plate 2 and configured to sense the position of the top plate 2.

(f) Effects In the present invention, since the position of the large or small cap opening of a drum can can be automatically determined, it not only contributes to improved efficiency compared to the case of manually determining the position, but also the positioning mechanism. Since it is easy to connect continuously to other processes, it is possible to automate the entire process.

[Brief explanation of drawings]

FIG. 1 is a plan view of a positioning mechanism according to the present invention. FIG. 2 is a side view of FIG. 1. FIG. 3 is another side view of FIG. 1. Figure 4 is a route map of a drum recycling process using a positioning mechanism. FIG. 5(A) is a side view of the drum, and FIG. 5(B) is a plan view. A and B are roller conveyors, 10 is a polishing device, 22.24
is the idle roller, 26.28 is the drive roller, 30.3
2 is a shaft, 34, 36 is a gear, 38 is a sprocket wheel, 40 is a base plate, 44 is a shaft, 46 is a sprocket wheel, 48 is a first chain, 49 is a sprocket wheel, and 50 is a sprocket wheel. 54 is a drive motor, 60 is a lever

Claims (1)

[Claims] A pair of idle rollers are provided on both sides of a pair of roller conveyors so as to run perpendicularly thereto and face each other, and a pair of idle rollers are provided inside the roller conveyor in parallel with and opposite to the roller conveyors. A pair of drive rollers equipped with mutually meshing gears are provided at the ends of the shaft, and a device for raising and lowering a base plate supporting the roller group, and the drum-shaped container held by the roller group is driven. A positioning mechanism that is moved by the operation of rollers and stops a drum-shaped container at a desired position.