JPS5811771Y2 - Frame transport device in sand molding machine - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a flask conveying device in a sand molding machine.

Generally, in a sand mold making line, a roller conveyor is attached between the disassembly machine, the sand mold machine, and the reversing machine, and from the disassembly machine side, all flasks are pushed using cylinders, etc., and moved on the roller conveyor. I'm letting you do it.

However, with a sand molding machine, all casting flasks must be accurately stopped at predetermined positions, but in the past, this stopping position had to be adjusted manually, forcing workers to do hard labor.

As a result, he was extremely fatigued and his efficiency decreased.

In view of the above, this invention provides a conveying device that can automatically and accurately stop at a stopping position without manual intervention.

The gist of this idea is to divide the multiple conveyor rollers placed before and after the sand molding machine into three roller groups, install a separate roller drive source for each roller group, and detect the flasks on the conveyor. The structure is such that a plurality of detectors are activated, all the flasks are carried in, stopped at a stop position, and the flasks that have been molded are carried out.

The configuration of this invention will be explained below with reference to an example diagram.

In FIGS. 1 and 2, 1 is a sand mold making machine, 2 is a model attached to the sand mold making machine 1, 3 is a roller conveyor used in this invention, and F is an empty casting flask.

Reference numerals 4 and 5 denote roller conveyor frames, which are arranged horizontally and parallel to each other in a symmetrical manner centering on the stop position corresponding to the model 2. 4 and 5 are both formed into a rectangular cylinder shape,
Inside each of the frames 4 and 5, 15 flanged rollers 6 are pivotally supported at equal pitches so as to face each other front and rear.

Of these 15 sets of rollers 6, the 5 sets on the right are the 10th-ra group A.
The 5 groups of 1st middle husband are the 20th group.The 5 groups on the left side of Group A B1 are the 30th group.
The shaft of the rightmost roller 6 (omitted in the figure) of the 10th group A is driven by a motor (not shown), and its rotation is controlled by a motor (not shown) installed in the frames 4 and 5. The rollers 6 are guided to the other four □-shira 6 axes by a transmission means such as a chain or gear provided, and each roller 6 is formed to rotate at the same speed in the direction of the arrow a.

The 2nd and 30th La groups B and C are also driven by the same transmission mechanism as the 10th La group A, but in order to drive the 20th La group B, the motor 7 fixed on the floor has a pole changer. A type variable speed brake motor is used, and in the case of high speed rotation, the rollers 6 of this group rotate at the same speed as the rollers 6 belonging to the 10th group A, but in the case of low speed rotation, the rollers 6 belonging to this group rotate at the same speed. It is formed to rotate at a low speed, and is completely similar to the 10th LA group A, except that the 30th LA group C is driven by a motor (not shown) at the leftmost roller 6 (not shown) of this group.

In addition, in the figure, 8 and 9 are sprocket wheels, 1
0 is a chain, and 11 is a shaft fixed to the roller 6.

The stopper 12 is located near the left end of the 10th group A and is pivotally supported by a pin on a bracket 13 fixed to the frame 5, and its lower end is connected to the tip of a piston rond of a cylinder 14 fixed on the floor. When the cylinder 14 is extended, the upper end of the stopper 12 is at a higher position than the upper surface of the frame 5, and when the cylinder 14 is contracted, the upper end of the stopper 12 is higher than the upper surface of the frame 5.
The upper end portion is formed at a position lower than the upper surface of the roller 6.

Reference numeral 15 denotes a limit switch as a flask detector, which is fixed near the left end of the 10th group on the upper surface of the frame 4, and its actuating piece is activated in response to the sides of all the flasks F on the roller 6. It is formed.

Reference numeral 16 denotes a proximity switch as a passage detector, which is fixed to the upper surface of the frame 4 so as to be activated when facing the balance Fa of all the flasks F passing a predetermined distance before the stop position on the 20th group B. has been done.

Reference numeral 17 denotes a proximity switch as an arrival detector, which is fixed to the upper surface of the frame 4 so as to be activated when facing the balance Fa of all the flasks F that have arrived at the stop position on the 20th group B.

Next, the operating state of this invention will be explained with reference to FIG.

The second molding will be explained in detail below. When the flask detector 15 detects that all the flasks F are on the 10th group A of the roller conveyor 3, and for the preceding flasks on the 20th group B, When the sand molding machine 1 completes molding the mold and a molding completion signal indicating the completion of molding is issued, the motor of the 30th-R group C (not shown) starts at high speed,
Each roller 6 of the 0-ra group C starts rotating at high speed.

At the same time as the molding completion signal is issued, the cylinder 14, which had been extended until then, contracts, and the stopper 12, which had stopped all the flasks F at its upper end, rotates counterclockwise, and the upper end descends. (to) do.

Next, when a lowering completion signal of the stopper 12 is issued, the motor of the 10th-RA group A and the 20th-RA group B (not shown) are activated.
The variable speed motor 7 starts at high speed, and each roller 6 of the first and 20th groups A and B starts rotating at high speed.

and 11th 2nd and 30th-Ra group A. Each of the rollers B and C rotates at high speed and at the same speed.

The preceding casting flask, which has completed molding, passes from the top of the 20th La Group B to the 30th La Group C, and heads toward a reversing machine (not shown).
When the flask detector in the reversing machine (not shown) detects the preceding flask, the motor of the 30th-R group C (not shown) is stopped by the signal, and the 30th-
Each roller 6 of group C stops rotating.

On the other hand, all the flasks F are placed in the 20th group B from the top of the 10th group A.
When it moves upward (in the direction of arrow P) at high speed and the passage detector 16 detects that the balance Fa of all the flasks F has passed in front of it, the variable speed motor 7 of the 20th group B is activated by the signal. It was changed and became a low-speed rotation, and the 20th-Ra group B
Since each roller 6 also rotates at a low speed, all the flasks F are
- Move at low speed on Group B.

Next, the arrival detector 17 moves the temp Fa of all flasks F in front of it.
When the arrival of the motor is detected, the motor of the 10th LA group A and the variable speed motor I of the 20th LA group B (not shown) are stopped by the signal.
Each roller 6 of B stops rotating, all the flasks F stop at the stop position on the 20th group B, the cylinder 14 extends, the stopper 12 rotates clockwise, and the upper end rises. Do QΦ.

After that, the sand mold making machine 10 starts its operation by the operation of a timer (not shown), and molds are made for all the flasks F on the 20th-R group.

The second molding is completed by each of the above operations.

For the third and subsequent molding operations, the same operations as described above are repeated.

In the first molding, the same operations as in the second molding are performed except that the motor of the 30th-R group C (not shown) and the flask detector in the reversing machine (not shown) do not operate.

According to this invention, as mentioned above, all flasks are automatically carried in and stopped accurately at the stop position relative to the sand molding machine,
After molding, it is automatically carried out again, so there is no need for manual adjustment to place the casting flask in a stopping position relative to the sand molding machine, resulting in labor savings and improved efficiency.

However, this invention is not limited to the above-mentioned explanation and previous examples, and its embodiments can be changed without departing from the technical idea of this invention.

[Brief explanation of drawings]

The figures show an embodiment of this invention, in which Fig. 1 is a perspective view, Fig. 2 is a partial side view taken along the line X-X in Fig. 1, and Fig. 3 is the flask conveying device shown in Fig. 1. FIG. 1... Sand molding machine, 3... Roller conveyor, 6... Roller, 7... Variable speed motor, 15... Casting flask Detector (limit switch), 16... Passage detector (proximity switch), 1
7... Arrival detector (proximity switch), A...
...10th-La group, B...20th-La group, C
・・・・・・30th-Ra group.

Claims (1)

[Scope of utility model registration request] A roller conveyor that transports all the flasks to a stop position of a sand molding machine and transports the molded flasks from the stop position, and each roller of the conveyor moves from the carry-in side of all the flasks to the carry-out side. On the other hand, the 10th-La group, the 20th-La group, and the 3rd
The roller group is divided into 0-ra groups, each roller group has a separate driving source, the stopping position is installed near the center of the 20-ra group, and all the flasks are placed on the 10-ra group. a flask detector that detects that a flask is present; a stopper that causes all of the flasks to pass one by one; and a stopper that detects that all of the flasks have passed a predetermined position before the stop position on the 20th-L group. a passing detector; and an arrival detector for detecting that all the flasks have arrived at the stop position, the flask detector detecting that all the flasks are present, and the sand molding machine When the molding completion signal is issued, the activation button of the 30th-R group and the stopper start lowering, and when the lowering of the stopper is completed, the first button and the 20th-R group are activated, and then When the 30th group is stopped and the passage detector detects that all the flasks have passed, the 20th group is switched to low speed rotation, and the arrival detector detects that all the flasks have passed. 1. A flask conveying device for a sand molding machine, characterized in that when arrival is detected, the first button and the 20th button are stopped, and the stopper is raised.