JPS5913074Y2 - Casting device in automatic typesetting machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a casting device for an automatic typesetting machine such as a Monotype, which continuously casts and typesets type using a top casting method.

In other words, this device presses the nozzle against the mold by moving the lever up and down, injects the hot water for one type into the mold, and then releases the nozzle from the mold to suck the hot water for the next casting into the cylinder chamber. This article provides a casting device for an automatic typesetting machine whose main purpose is to make the casting process easier, and its secondary purpose is to reduce the amount of hot water that will be poured in the next cycle when one cycle of casting is completed. This prevents hot water from remaining at the tip of the nozzle, thereby eliminating the inconvenience of hot water sticking to the nozzle discharge port and causing problems during the next casting.

In the above case, if you move the piston up and down while casting with the nozzle crimped to the casting spout, the nozzle tip will be cooled by the cooling water in the batten and the hole at the nozzle tip will become clogged. The nozzle must be removed from the mouth plate immediately after casting.

Next, an embodiment of this invention will be described with reference to the drawings.

Figure 1 shows the structure of the main parts of the device of this invention.
Reference numeral 1 denotes a metal melting pot that accommodates a molten metal 2 of type alloy up to its upper surface 2', and the metal 2 is heated by a heating means (not shown). 3 and a cylinder arm 4 having a runner 4' communicating with the lower end of the cylinder 3 are housed so as to be movable up and down by a casting mechanism to be described later.

The lower end of the cylinder 3 is closed by a cap 5 to form a chamber 6, and this chamber 6 and an upper chamber 7 communicating with the base metal 2 in the pot 1 through a window 7' at the upper part of the cylinder 3.
A sleeve 8 attached to the cylinder is interposed between the sleeve 8 and the sleeve 8, and a slidable cylindrical valve 9 is fitted inside the sleeve 8. There is a slight gap 1 between the bolt 11
A gap adjusting nut 12 that engages with the upper end of the valve 9 is screwed to the port 11, and a piston 13 that slides inside the cylinder 3 is screwed to the upper portion of the nut.

The head 11' at the lower end of the bolts 1 to 11 engages with a step 9' provided at the lower end of the valve 9 to prevent the valve from being pulled out downward, and the bolt head 11' has a plurality of notches 11a, 11 around it as shown in FIG.
a... are provided so that the gap 10 and the chamber 6 communicate with each other via these notches 11a.

The engaging portions of the valve 9 and the gap adjusting nut 12 are chamfered 9a and 12a to each other.

In addition, inside the chamber 6, a check valve 14 that allows hot water to flow mainly from the chamber 6 to the runner 4' is provided with a spring 15, which is an elastic means, compressed between it and the cap 5. The upper surface of the check valve 14 and the lower surface of the sleeve 8 are brought into close contact with each other by the urging force of a spring 15.

The check valve 14 is also provided with a small hole 14' that communicates the chamber 6 with the runner 4'.

On the other hand, an opening 4a that communicates with the runner 4' is provided upward at the tip of the cylinder arm 4.
A nozzle 16 is threadedly connected to a threaded portion 4a' provided in the threaded portion 4a'.

A mold 17 is disposed above this nozzle 16,
A spout 17' provided in the mold 17 is placed at a position facing the nozzle 16.

Note that 18 is a plate, and 9 is a mother mold that is crimped onto the upper surface of the mold by means not shown.

The mold and batten are cooled by circulating cooling water.

The cylinder 3 constructed in this way has a protrusion 3' projecting horizontally from the top of the cylinder 3, as shown in FIG.
is provided, and the projection 3' is connected to a bell crank-shaped cylinder up/down lever 20 pivotally mounted on the outside of the hook 1.
The cylinder arm 4 is held by one end 20a of the fork shape.
The distal end of the nozzle crimping lever 21 is similarly engaged with one end of a nozzle crimping lever 21 pivotally mounted on the outside of the hook 1 (see FIG. 2).

The other ends of these levers 20 and 21 are adjusted to appropriate positions on the rod 22, respectively, with knobs l-23a and 23b.
is engaged with.

The rod 22 is arranged to be movable up and down with a spring 24 tensioned at its lower end, and one end of a swinging lever 25 is engaged by an adjustment knob l-23C at its upper end. A nozzle crimping pin 26 is engaged with the end.

As shown in FIG. 3, the nozzle crimping pin 26 constitutes a part of the casting mechanism 27, and the
an upper bracket fixed to the top of a casting rod 30 pinned to a casting bracket 29 engaging with 8;
It is fixed at 1.

The upper bracket 31 has a cast-in spring 32a,
A rod 33 is forced upwardly through the bracket 31 via the rod 32b and is attached to the bracket 31 so as to be movable up and down.Furthermore, the bracket 36 supporting the fulcrum 35 of the upper lever 34 is pulled via the rod 33. I'm raising it.

Also, the cast-in bracket 29 has a spring 37 at its tip.
The bracket 40 supporting the fulcrum 39 of the lower lever 38 is pushed up via the bracket 40.

A stopper rod 41 is fixed to the bracket 40, and the upper limit position of the rise of the bracket I-40 can be adjusted by a stopper nut 42 which is threadedly connected to the lower end of the stopper rod 41.

Further, the two brackets I 36 and 40 are engaged via a trigger mechanism 43.

That is, the trigger mechanism 43 includes an L-shaped swingable trigger 43b which is installed at a position where it is always engaged with the bracket 36 by the tensile force of a spring 43a, and a trigger 43b which is fixed to the upper bracket 31 and which is connected to the bracket 36. 43b, and a dog 43C that engages one end of the trigger 43b to release the engagement between the upper surface of the bracket 36 and the lower end of the trigger 43b.

The upper lever 34 and the lower lever 38 are connected by a joint 44 pinned in the middle, and a top 4 is attached to the end of the upper lever 34 opposite to the fulcrum 35.
The piston 13 is engaged via the fulcrum 45a, and the lower lever 38 has a hollow 45b at the end opposite to the fulcrum 39.
The cylinder 3 is engaged through (see FIG. 4).

Next, the operating mode of the device of this invention will be explained. First, when the casting lever 28 is moved upward, the entire casting mechanism 27 is raised by two degrees, and during this process, the nozzle crimping pin 26 is also raised to the second position. As shown in the figure, the cylinder 3 is raised by the tension of the spring 24 via the levers 20 and 21, and at the same time the nozzle 16 is pressed into the spout 17' of the mold 17.

Then, the lower bracket 40 is tightened by the stopper nut 42.
When the rise of the bracket 36 stops, the rise of the bracket 36 is also stopped due to being blocked by the lower end of the trigger 43b.

However, the casting rod 30 further rises to push up the upper bracket 31 and compress the springs 32a and 32b, but during this time the relative positions of the two brackets 36 and 40 do not change, so that the fulcrum 35 of the upper and lower levers 34 and 38 Since the positional relationship of .39 is maintained as it is,
Hot water is not injected.

The upper bracket 31 continues to rise and the dog 4 at its upper end
At 3C, the trigger 43b is finally engaged, and the spring 43
The trigger 43b is swung against the force a.

When the trigger 43b is released, the bracket 36 is rapidly pulled upward by the repulsive force of the compressed cast-in springs 32a and 32b.

During this time, the bracket 40 is stopped by the stopper nut 42, so the fulcrum 3 of the upper lever 34 shown in FIG.
5 with respect to the fulcrum 39 of the lower lever, the piston 13 is press-fitted into the cylinder 3 by lever motion, and hot water is injected.

The operations of the cylinder 3, piston 13, and nozzle 16 accompanying this operation will be explained with reference to FIGS.
3, the cylinder 3 rises by an amount A due to the tension of the spring 24, and the discharge port 16' of the nozzle 16 attached to the tip of the cylinder arm 4 is pressed against the spout 17' of the mold 17 ( Figures 1 and 5a
reference).

At this time, the gap adjustment nut 12 of the piston 13 and the valve 9
There is a gap of B between the top edge of

Next, the trigger mechanism 43 is actuated and the piston 13 begins to descend rapidly due to the repulsive force of the cast-in springs 32a and 32b, but first, as shown in FIG. At this time, the nut 12 and the valve 9 come into contact and close the gap.

At this time, there is no change in the pressure of the hot water in the chamber 6.

Then, as shown in Fig. 5C, when the piston 13 continues to descend further by C', the valve 9 similarly descends by C, increasing the pressure of the hot water in the chamber 6, which causes the check valve to 14 is pushed down against the spring 15, and the hot water in the chamber 6 is discharged through the nozzle 16 into the mold 17 through the runner 4', and at this time a type similar to the mold 19 which has already been crimped is cast. .

At this time, the nozzle 16 is crimped to the casting spout 17', and once hot water is injected into the mold 17 for one type, no more will enter, so the piston 13 actually corresponds to one type. the springs 32a, 32b
The compressive force of is the force of the riser.

At this time, as the valve 9 descends, the hot water 2 in the pot 1 flows through the window 7.
' into the chamber 7.

Here, the piston 13 remains in the lowered position for the time required to cool the type, and during this time the check valve 14 rises due to the elastic force of the spring 15 and the buoyancy of the check valve itself, and its upper surface is pressed against the lower surface of the sleeve 8. ing.

Next, the piston 13 starts to rise, but when it first rises by B, the upper end of the valve 9 opens, as shown in FIG. 5d, and while the piston 13 continues to rise, the chamber 6
is blocked by the check valve 14, so some of the hot water in the runner 4' flows into the chamber 6 through the small hole 14', but most of it does not flow back, so the hot water in the chamber 7 Nut 12 and valve 9
The liquid is sucked into the chamber 6 through the gap 10 between the valve 9 and the bolt 11 and the notch 11a in the bolt head 11', resulting in a state similar to that shown in FIG. 5a.

Here, the piston 13 is at the upper limit position with respect to the cylinder 3, and the cylinder 3 and the piston 13 remain in this relative position.
is lowered by A to separate the nozzle 16 from the casting spout 17', completing one cycle of casting.

In the state shown in FIG. 5d, the matrix 19 is separated from the mold 17, and the matrix storage (not shown) is moved to select the next matrix.

The device of this invention constructed as described above has three cylinders.
Since a spring 15 is interposed between the check valve 14 and the cap 5 at the lower end of the cylinder in the chamber 6 at the lower end, the check valve 14, which had been sucked up when the cylinder 3 stopped descending, further increases due to its inertia. There is no so-called double-blow phenomenon in which hot water descends and is discharged from the nozzle 16 in the runner 4', and moreover, a small amount of hot water is discharged into the runner 4' through a small hole 14' provided in the check valve 14. Since hot water can flow into the chamber 6 from the hot water, it is possible to wait for the next injection of hot water without leaving hot water at the outlet 16' of the nozzle 16, and during that time, the outlet 16' of the nozzle 16 is cooled. However, since the level of the hot water at the tip of the nozzle is lowered and approaches the upper surface 2' (Fig. 1) of the molten metal in the pot, and the temperature is almost equal to that of the hot metal, there is no problem of the hot water sticking.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the main parts of the device of this invention, showing the raised position of the cylinder. Fig. 2 is a schematic diagram showing the cylinder and nozzle vertical holding mechanism in this invention, Fig. 3 is a sectional view showing the casting and trigger mechanism in this invention, and Fig. 4 is a support for the cylinder and piston part in this invention. Schematic diagram showing the mechanism, No. 5
Figures a to d are cross-sectional views showing the operating mode of the piston;
The figure is a view in the direction of the x arrow in FIG. 1, and FIG. 7 is a time chart showing the operating status of each part. In the diagram, 1...Balance melting pot, 2...
・Melted metal, 2'...Top surface of molten metal, 3...
...Cylinder, 4...Cylinder arm, 4
'... Runway, 5... Cylinder cap, 6, 7... Chamber, 9... Valve, 10
...Gap, 11...Bolt, 11'
...Bolt head, 11a...Notch, 12...Gap adjustment net, 13...
・Piston, 14...Check valve, 14'...
...Small hole, 15...Spring (elastic means),
16...nozzle, 16'...discharge port,
20... Cylinder up/down lever, 21...
. . . nozzle crushing lever, 27 . . . casting mechanism, 43 . . . trigger mechanism.

Claims (1)

[Scope of utility model registration request] A bullion melting pot for melting type alloy, a cylinder housed in the bullion melting pot so as to be able to move up and down, and a piston that slides inside the cylinder to absorb and discharge hot water in the bullion melting pot. The main part consists of a cylinder arm having a runner that communicates with the lower end of the cylinder via a check valve, and a nozzle that is attached to the tip of the cylinder arm and is crimped against the mold surface. , the cylinder and the nozzle are each vertically movably supported by a lever for up and down the cylinder and a lever for pressing the nozzle, and a casting mechanism having these levers simultaneously performs the movement of the nozzle toward and away from the mold and the movement of the cylinder up and down. and the piston is rapidly moved relative to the cylinder by a trigger mechanism forming a part of the casting mechanism, wherein the piston is interposed between the check valve and the lower end of the cylinder. The check valve is prevented from malfunctioning by the elastic force of the elastic means, and the check valve is provided with a small hole through which the chamber on the cylinder side and the runner on the nozzle communicate with each other, so that the discharge of the piston is prevented. A casting device for an automatic typesetting machine, in which hot water remaining at the discharge port of a nozzle is removed by causing a small amount of hot water to flow back into the chamber through this small hole during a rising operation after operation.