JPS5832835Y2 - Automatic mold making machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of an automatic mold making machine.

A conventional molding machine of this type has a base 01. Jolt table 02, side frame 03, upper tie bar 04, stripping mechanism 0
5, head carriage (run marker) 06, squeeze mechanism 07, 08, index finger mechanism 09,
It is composed of a measuring box, an aerator mechanism 010, a sand hopper 011, etc., and an empty casting flask a sent by a power conveyor (not shown) is placed in the measuring box and aerator mechanism 010 directly below the sand hopper 011 by means of a frass puller 012. 2nd below
Once positioned as shown by the dashed line in the figure, the flask that has finished molding is released from the mold by a stripping mechanism 05.

When the empty flask and the molded flask are in this state, the squeeze mechanism 07.08 fixed to the shaded part in the figure, that is, the head carriage 06,
, index finger mechanism 09, measuring box and aerator mechanism 010, air cylinder 0
Rail 01 fixed to side frame 03 by 13
4. Move (forward) in the direction of the arrow (Figure 2).

With this operation, the empty flask a is sent to the center of the molding machine (squeeze position), and the molded flask is sent to the next processing step.

The empty flask a sent to the squeeze position is set on the bolster 015 on the jolt table 02 by the stripping mechanism 05, and then a fixed amount of cast iron is introduced from the measuring box and the aerator mechanism 010 and the jolt is operated. is started.

Next, the head carriage 06 and the mechanism attached thereto retreat to the original position, the squeeze mechanisms 07 and 08 perform squeezing and molding, and the flask containing the molded model is separated by the stripping mechanism 05. be molded.

By repeating the above operations, the mold is automatically and continuously repeated.

As described above, when the molding machine is squeezed and the flask is moved in and out of the jolt position, the conventional method uses the head carriage 06 and the squeeze mechanism 0 fixed to the head carriage 06.
7,08, Since the index finger mechanism 09, measuring box and aerator mechanism 010 repeatedly move forward and backward at high speed, (1) The weight and volume of the moving parts such as the head carriage 06 are large, and therefore the manufacturing Requires a large amount of space in the front and rear of the machine.

(i[) Also, since a large rolling load due to the movement of the head carriage 06 acts on the foundation, a strong foundation is required.

(iii) Mechanically, when casting iron into the flask, it is necessary to provide a large gap between the aerator hopper and the flask, resulting in a lot of spill sand.

0ψ mechanism is complicated and expensive.

There were drawbacks such as.

The present invention was proposed with the aim of solving the above-mentioned drawbacks of the conventional automatic mold making machine. a side frame 3, a jolt table 2 disposed on the central upper surface of the base 1, and a squeeze mechanism 6 fixed via a support frame to the center of a top frame 3a constructed on the top of each of the side frames 3. , the above side frame 3
A pair of left and right cast iron supply devices 5 are fixedly installed on the side frames 3 via supporting frames, and have a weighing hopper 8, a sand gate 9, and a movable chute 12. a stripping mechanism 4 having a roller bar 17 protruding from the side, and a stripping mechanism 4 having a mounting frame 14 urged downward by a spring 16; and the side frame 3.
When an empty flask a is fed into the machine, the flask a is positioned at a predetermined position, and the molded flask a' is removed a predetermined distance by the stripping mechanism 4. This invention relates to an automatic mold making machine characterized in that it is equipped with a flask positioning and carrying mechanism 7 that sends the flask a' out of the machine when the flask is raised.

The present invention will be explained in detail below with reference to FIGS. 3 to 9.

In Fig. 3, 1 is a base fixedly installed on a foundation, side frames 3 are erected on the upper surface of each of the four corners, and a jolt table 2 is arranged in the center of the upper surface, 3a is a base on each of the above-mentioned sides. A top frame 4 is installed on the top of the frame 3, and 4 is a stripping mechanism arranged on the outside of the upper part of each side frame 3, as in the conventional device.
These stripping mechanisms 4 are vertically moved up and down a predetermined distance by an air cylinder 21 fixed to the side frame 3, and a roller attached to the tip of a roller bar 17 protruding inside the lower end of the stripping mechanism 4 is operated. 20 can support the bottom surface of the upper 7 flanges.

(See Fig. 6) Reference numeral 5 denotes a pair of left and right cast iron supply devices fixedly installed on both left and right sides of the top frame 3a via supporting frames.
The device 5, as shown in FIG. The movable chute 12 is opened and closed by an air cylinder 10 fixed to the side frame 3, and the fifth
The empty flask a is swung as shown by the dashed line in the figure, and the empty flask a is placed in a predetermined position on the bolster 26 by the stripping mechanism 4 as shown in the right half of FIG. When,
The air cylinder 13 allows the lower end of the movable chute 12 to be positioned above the flask.

Furthermore, when the squeeze mechanism is lowered and the flask is raised by the stripping mechanism 4, which will be described later, the operation of the air cylinder 13 allows the flask to be raised and lowered without any hindrance, as shown in the left half of Figure 3. It's starting to take a stance.

Reference numeral 6 denotes a squeeze mechanism fixed to the center of the top frame 3a via a support frame, and the mechanism 6 has the same structure as the conventional one except that it is fixed to the top frame 3a.
Its head 22 is designed to compact the cast iron charged into the flask.

In FIG. 4, reference numeral 7 denotes a flask positioning and unloading mechanism, and the mechanism 7 includes a kicker 19 whose base is pivotally supported by the side frame 3 on the side frame 3 on the side where the flask is carried in, and which is rotated around its pivot point by an air cylinder 19a. and a pusher 23, and a stopper 18 having a shock absorber attached to the side frame 3 on the side frame 3 for carrying out the flask, and a stopper 18 (not shown) installed on the carrying-in side (front side of the machine) of the empty flask. The empty flask sent in by the power conveyor is transferred to the roller 20 of the stripping mechanism 4 (in this case, the stripping mechanism 4 is at the upper limit position).

), the kinetic energy is absorbed by the stopper 18 to smoothly stop the molding machine, and the molding machine is further pushed into the molding machine from the rear by a kicker 19 and positioned at a predetermined position.

Referring to FIG. 6, reference numeral 14 designates brackets t protruding near the four corners of the support rods 15 erected near the inner ends of the roller bars 17 of each of the stripping mechanisms 4.
The filling frame 1 is supported horizontally via the filling frame 14a.
4 is biased downward by a spring 16 interposed at the upper end of each support rod 15.

The inner walls of each side of the raised frame 14 have a downwardly expanding slope as shown in FIG. A tapering slope is provided along the flask delivery direction.

Further, the side frame 24 on the feeding side of the casting flask of the filling frame 14 has pins 25 attached to both side frames, as shown in FIGS. 8 and 9.
It is hinged so that it can be opened and closed freely.

26 in the figure shows a model (pattern) of a well-known bolster 127 fixedly installed on the Jolt table.

The automatic molding machine of the present invention is constructed as described above, and when an empty casting flask a is sent from the direction of arrow X in Fig. 4 by a power conveyor (not shown) and enters the machine,
The flask a enters the machine while being supported by the roller bars 170 and rollers 20 of each stripping mechanism 4 via the flanges, hits the stopper 18 with a shock absorber, and transfers its kinetic energy to the shock absorber of the stopper 18. It is absorbed and stops smoothly.

In this case, the flask a is further pushed in from behind by the kicker 19 and positioned at the center of the machine.

(Refer to the left half of Fig. 3.) Then, the IJ topping mechanism 4 is synchronously driven by its air cylinder 21 to descend a predetermined distance while holding the empty flask a, and the empty flask a is It is set on the bolster 26.

After the flask a is lowered, the stopper 18 is swung by its driving source in a direction perpendicular to the plane of the paper of FIG. 4 and is released.

Further, the filling frame 14 attached to the stripping mechanism 4 comes into contact with the upper surface of the empty casting flask a, and is pressed against the upper surface by a spring 16.

In this case, the spring 16 also has a damping effect on the flask a.

When the setting of the empty casting flask a is completed as described above, the movable chutes 12 of the pair of left and right casting sand devices 5 are actuated by the air cylinders 13, and their lower ends are positioned above the filling flasks 14, as shown in FIG. The state will be as shown in the figure on the right half side.

Then, the sand gate 9 of the sand supply device 5 for both sides is opened by the air cylinder 10, and the weighing hoppers 8 are supplied with a fixed amount of cast iron in advance from a casting sand treatment device (not shown).
The cast iron inside is simultaneously supplied from both sides above the flask a via an intermediate chute 11 and a movable chute 12.

In this case, the casting sand collides with each other at the lower end of the movable chute 12 and is in an aerated state, and the cast iron in the flask a becomes fairly flat, and there is almost no need for a leveling operation using a leveling plate.

In addition, the cast iron spring 16 supplied from the movable chute 12 guides the filling frame 14 pressed against the upper surface of the casting flask a and enters the casting flask a, so that the sand does not accumulate between the filling frame 14 and the casting flask a. Spills are prevented.

After casting sand is thus poured into the flask a, the movable chute 12 returns to its original position and the sand gate 9 is closed.
Cast iron for half a flask and a total of one flask is supplied into the weighing hoppers 18 on both sides from the casting sand processing device, and the pair of left and right casting sand supply devices 5 are used to supply sand into the next empty flask. Be prepared and stand by.

On the other hand, at the same time that cast iron is poured into the empty flask a set on the bolster 26 as described above, the jolt table 2 starts operating and the jolt action is applied to the sand in the flask.

After the jolt action or during the jolt action, the squeeze head 22 of the squeeze mechanism 6 descends to compact the sand in the flask a, and then the head 22 immediately rises.

During or after the squeeze head 22 is raised, the roller bar 11 is raised a predetermined distance by the operation of each stripping mechanism 4, and the flask containing the compacted sand mold is separated from the model 2T and the bolster 26 and released. will be carried out.

The molded flask, which has been raised a predetermined distance in this way,
The material is pushed out by the pusher 23 in the direction of arrow Y in FIG. 4 onto a power conveyor (not shown) installed on the flask outlet side of this machine, and is transported to the next processing step by the power conveyor.

In this case, both side frames of the filling frame 14 are provided with dowels that widen towards the direction of movement of the flask, and the frame 24 on the exit side is hinged to both sides with pins 25. For,
The flask containing the model is smoothly sent out of the machine.

When the flask is pushed out from inside the machine onto the power conveyor, the stopper 18 moves from the retracted position to the operating position, the pusher 23 retracts, and the kicker 19 moves to the retracted position to move the next empty flask to the next position. Prepare for delivery onto the plane.

With the above operations, one cycle of automatic mold making by this machine is completed, and by repeating this cycle, molds are continuously and automatically made.

Since the molding machine of the present invention has the above-described configuration and function, according to the present invention, (1) the sand supply device 5, the squeeze mechanism 6, the flask positioning/unloading mechanism, etc. The molding machine is also fixed to the machine frame and is not moved by a head carriage like conventional machines, so it does not require a large space at the front or rear of the molding machine.

(2) Also, unlike conventional machines, a large rolling load is not applied to the foundation, so a very strong foundation is not required.

(3) Since the flask is charged into the flask via the movable chute 12 of the sand supply device 5 and the filling frame 14 attached to the stripping mechanism 4, there is almost no spillage of sand and no spill sand is generated. do not have.

(4) The structure is relatively simple, the operation is reliable, and the cost is low.

The following practical effects can be mentioned.

[Brief explanation of drawings]

Figures 1 and 2 are schematic explanatory views of a conventional machine, with Figure 1 being a side view and Figure 2 being a front view. 3 to 9 are schematic explanatory diagrams of an embodiment of the present invention,
Figure 3 is a side view. The figure on the left from the center line shows the flask being fed into the machine and the flask being sent out from the machine, and the figure on the right shows the casting sand in the flask. The state of the button at the time of supply and the state at the end of molding are shown respectively. Figure 4 is a sectional view taken along the line A-A in Figure 3, Figure 5 A is a front view of the casting sand supply device, Figure 5 is a side view of the opening, and Figure 6 is S).
This is an explanatory diagram of how the flask is installed in the IJ wrapping mechanism.The figure on the left side of the center line shows when the flask is fed into the machine.
The figure on the right shows the condition when the flask is sent out of the machine, and the figure on the right shows the condition during molding. 7 is a plan view of the filling frame, FIG. 8 is a sectional view taken along the line B--B in FIG. 7, and FIG. 9 is a view taken along arrow C in FIG. In FIGS. 3 to 9, 1...Base, 2...
Jolt table, 3...Side frame, 3a...
・Top frame, 4... Stripping mechanism, 5.
... Casting sand supply device, 6... Squeeze mechanism, 7...
Casting flask positioning and unloading mechanism, 8...Measuring hopper, 9.
...Sand gate, 10...Air cylinder, 12.
...Movable chute, 13...Air cylinder, 14.
... Filling frame, 16-... Spring, 11... Roller bar
18...Stopper 19...Kicker, 20...Roller, 21...Air cylinder, 22...Squeeze head, 23...Pusher 26...Bolster 21...Model.

Claims (1)

[Scope of utility model registration request] A base fixed on the foundation, a side frame 3 erected on the upper surface of the four corners of the base 1, a jolt table 2 arranged on the upper center of the base 1, and the top of each side frame 3 mentioned above. A squeeze position 6 is fixed to the center of the top frame 3a, which is constructed by a support frame, and a weighing hopper 8 is fixed to the side frame 3 via a support frame.
A pair of left and right cast iron supply devices 5 each having a sand gate 9 button and a movable chute 12 are disposed on each of the side frames 3 so as to be able to rise and fall a predetermined distance, and a roller bar 17 protruding from the lower end of the device is provided with a spring 16 to provide a downward movement. A stripping mechanism 4 having a filling frame 14 energized by A flask positioning/unloading mechanism 7 is provided for positioning the molded flask a' and sending the molded flask a' out of the machine when the molded flask a' is raised a predetermined distance by the stripping mechanism 4. An automatic mold making machine featuring: