JPS5813436A - Method and device for automatic molding of mold by blowing system - Google Patents

Abstract

PURPOSE:To improve workability and to reduce equipment costs by carrying the molding frames for top parts and bottom parts for molding use of a blowing system and a squeezing system. CONSTITUTION:Squeeze tables 9, 9' carry molding flasks 1, 2 as they are moved automatically between a squeeze station 10 and releasing stations 8, 8' alternately by a junction conveyor 5. In the station 10, a movable hopper 12 charged beforehand with molding sand from a stationary hopper 17 is moved to said station, and a skirt 19 is lowered by the operation of an operating cylinder 11a to close the space between the hopper 12 and the flask 1. At the same time, the hopper 12 is closed tightly by a pressure resistance cover 16, and compressed air is introduced through a hose 15 to extrude the molding sand from the through-bottom 24 of the hopper into the flask 1. In succession, the table 9 is forced upward by the operation of the cylinder 11, by which the squeezing is completed. After the cylinder 11 and the skirt 19 are returned to the home positions, the flask 1 is returned to the station 8, where the mold is released, and the released flask 1 is delivered to the next molding stage.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, upper mold and lower mold frames for casting are brought in alternately, and a mold is automatically formed using both a pull method and a squeeze method.

The conventionally used brewing machine is the Tokuko Sho 47-2
There is one shown in FIG. 1 of Publication No. 4858 (FIG. 7 of the present application). To explain with reference to FIG.
．． A roller conveyor 54 is installed on support stands 58 on both sides of the outside of both formworks 52. δ7 is provided, fixed homper 55
A sliding hopper 59 that slides on the table 58 is located at the bottom of the table 58.
A support frame 61.61 having a filling frame 60.60 is installed on both sides of the holding body 57 (n11) so as to be vertically movable.

In the conventional method described above, both the upper and lower formwork are carried onto the squeeze table at the same time, and when pouring sand control into the formwork, the top surface of the filling frame rests on the sliding hopper. Because it is positioned on the same plane as the table, the process and mechanism for filling the formwork with anti-sand is not extremely complicated, and the molding machine must be stopped each time the mold is being operated. It was extremely inefficient.

This invention solves these problems, and uses a combination of the professional method and the squeeze method to easily introduce anti-sand into the formwork, improve workability through efficient molding, and operate the upper and lower formworks separately. The purpose is to reduce equipment costs by simplifying the mechanism.

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, the upper and lower formworks are placed in parallel with two carry-in conveyors that feed separately, and a squeeze table is provided approximately in the middle of a joint conveyor that connects the carry-in conveyors, and this squeeze table and a fixed hopper are connected to each other. A packet conveyor with a movable hopper is installed between them, a pressure tray and stationer with air hoses are installed above and below the squeeze table, and a skirt to prevent sand leakage is fitted to the movable hopper so that it can be raised and lowered. This is what I did.

Embodiments of the present invention will be described below based on the drawings.

In this embodiment, as shown in FIGS. 1 to 5, conveyors 8 and 4 for carrying in the upper mold and the lower mold h 1112 separately are arranged in parallel. ．．
4, there is provided a softening conveyor 5 which connects both inlet conveyors 8.4 in an approximately H-shape, and an operating cylinder 6.6' for mold release and a mold releasing cylinder 6.6' are installed at both ends of this joining conveyor 5. The mold release station 8 has a frame 7°7' for lifting.
. The lower mold) is released on the squeeze table 9 or 9', and the formwork 1 or 2 that has been sent out after the molding with anti-sand O is released, and then transferred onto the carry-out conveyor 8a or 4a. It is connected so that it can be done. The squeeze tables 0 and 9' are mounted so as to be movable alternately on the joint conveyor b, and are mounted at the squeeze station 10.
The mold 1 or 2t is conveyed in series by reciprocating between the mold storage stations 8 and 8'. The squeeze station IO has a guard frame 14 equipped with an operating cylinder 11 for pushing up the squeeze table 9 and squeezing it at the bottom and a guard arm 18 for guarding the movable hopper 12 from floating up during squeezing.
A pressure-resistant lid 16 to which an air hose 15 for compressed air is connected is disposed above the guard frame 14 so as to be movable up and down by the operating cylinder 6. The movable hopper 12 is mounted so as to be able to reciprocate in conjunction with a packet conveyor 18'2 that connects the Styze station 10 and the lower part of the fixed hopper 17, and a skirt for preventing sand leakage is provided around the outer periphery of the lower part of the movable hopper 12. 7) A holding plate 2 in which the skirt 19 is fitted so as to be freely raised and lowered and is supported on the rods 20 of a pair of actuating cylinders lla attached to the guard frame 14.
By lowering the presser plate 21, the lower part of the movable hopper 12 is connected to the space between the formwork 1 or 20 waiting at the squeeze station 10. The phototubes 22, 22' are arranged on the sides of the demolding stations 8, 8' and communicate with a control panel 23, which controls the guard frame 14 of nlj.
The control panel 28 controls each pump 8.3a by placing it at other appropriate positions.

4+' 4a+ 5+ 18 and each station 8.
8'.

IO9 movable hopper 12 parallel operating cylinder 6゜6'+
11. The automatic molding apparatus B is configured to electrically control the linked operations such as starting and stopping the lla, etc.

Next, to explain the function of this invention, first, the upper mold frame 1
When the start switch is turned on for the carry-in conveyor 8 which is waiting with loaded molds, the carry-in conveyor 8 shown in FIG. Since this mold is transferred to the upper mold pattern plate A waiting in the station 8, this mold l is caught by the light tube 22, and the input conveyor 8 is completely stopped by the signal, and at the same time, the splicing conveyor 5 is started to transfer this mold. The splicing conveyor 5 is moved in the direction of the arrow P in FIG. It is made to wait inside the station 10. With this movement stop signal, the six-ket conveyor 18 shown in FIGS. 1 and 2 is started, and the six-ket conveyor 18 shown in FIGS.
Since it is moved in the t-arrow P2 direction, the fixed hopper 17
The movable hopper 12, which has been loaded with anti-sand O beforehand and is on standby, is moved in the same direction, and the movable hopper 12 is moved in the same direction into the squeeze station lo provided in the direction of movement. The packet conveyor 18 is fed and stopped as shown in 12, and the progress of the packet conveyor 18 is stopped by the stop signal. This stop signal causes the operating cylinder 1 in FIGS. 5 and 6 to
1''+11a is started and presses down the presser plate 21 supported via the rod 20.20, so the waiting skirt 19 is hooked in the downward direction of the presser plate 21 and pressed down, and this skirt 19 is squeezed. Push it down until it touches the upper surface of the formwork 1 on the table 9 and stop. By lowering this skirt 9, the space between the lower part of the movable holabo 12 and the upper part of the formwork 1 is closed so that there is no gap. This skirt 19 to stop the descent, actuating cylinders lla and lla operate in the opposite direction to restore the presser plate 21, and the return signal starts the actuating cylinder 6'', so that the withstand pressure i16 supported via the rod 20 is lowered. Then, the movable hopper 12 that is on standby in the downward direction is covered, and the pressure-resistant lid 16 is kept on standby without applying pressure. In response to this signal to complete the closing, a magnetic valve (not shown) for the compressor or other air supply source is activated, and the compressed air is forced into the movable hopper 12 through the air hose 15. The anti-sand material 0 in the movable hopper 12 is pushed out by the air pressure from the through-bottom (lattice or mesh) 24 of the movable hopper 12 through the inside of the scarf 19 into the formwork l, and is further filled with the required amount inside the formwork 1. Finish adding sand control 0 by increasing the amount. Subsequently, the operation cylinder 11 shown in FIG. 6 is started by the signal indicating the end of sand control O injection, and the push plate 25 attached to the rod 20 pushes up the squeeze table 9, and at the same time pushes up the pattern brake A and the formwork 1. 19, which is placed on top of the formwork 1, rises together.
At the same time as the skirt 19 is restored to the starting position, the anti-sand 0 that had risen inside the skirt 19 is firmly pressed inside the formwork 1, and the squeezing ends at that point. When this squeeze end signal is received, the operating cylinder 1
1 or reverse to retract the push plate 25, and with a signal indicating the end of the operation, the actuating cylinder 6'' is actuated to restore the pressure-resistant lid 16, and at the same time, the packet conveyor 18 is started to move the movable conveyor 12 to the starting position. During the waiting period, the damper (not shown) of the fixed hopper 17 is activated to prevent sand
Fully replenish and stand by for the next operation. On the other hand, the squeeze table 9 moves in the opposite direction of the arrow P by starting the splicing conveyor 5 in the opposite direction to that described above using the same signal, returns to the starting position of the mold release station 8/C, and stops.

At this time, since the formwork 2 is placed in advance on the squeeze table 9' on which the lower pattern plate A', which was waiting for the X f-john 8', is placed on the squeeze table 9',
The molding machine enters the squeeze table 9' or the squeeze station IO replacing the squeeze table 9 that has finished its work earlier, and repeats the key points described above to continue the molding work.

- When the mold 1 returns to the mold release station 8 after finishing the molding, the operating cylinder 6 is started by the signal, and its p
The formwork 1 is lifted up as shown in Fig. 8 via the frame 7 supported on the ladder 20, the formwork l is released from the pattern plate A, and the formwork l is conveyed by a hanger (not shown) to a conveyor. Change to 8a. This reloading operation and the work of reloading the formworks 1+2 onto the splicing conveyor 5 only require the operator's assistance.

Repeat the above operation to formwork 1.2 or unloading conveyor 3a.
, 4a, the core is assembled into the mold 2, and the mold 1 is stacked on the mold 2 in a continuous manner to complete the casting preparation.

Since the present invention is configured as described above, it has the following advantages.

(1) Since the formwork is molded separately for the top and bottom,
The molding mechanism can be simplified, and at the same time, the workability of the next process of inserting the core can be greatly improved.

(The oil route of the mechanism allows for smaller turning speeds, making it extremely convenient for producing a wide variety of small and small products.

(8) Even if the molds that have been made are damaged during transport, there is no need to carry out the next process as the IC and next molten molds are waiting on the unloading conveyor. It's convenient.

(4) Equipment costs can be halved compared to conventional ones, and at the same time labor costs can be reduced due to labor savings.

[Brief explanation of the drawing]

Figure 1 is an overall view of the device of the present invention, and Figure 2 is taken along the line XX in Figure 1.
The partially enlarged side view of the line, FIG. 3 is also Y-Y and Y'-
A partially enlarged side view of Y' powder, Figure 4 is an explanatory diagram of the mold release procedure,
Fig. 5 is an enlarged front view partially cut away along line 2-2 in Fig. 1;
FIG. 6 is an explanatory diagram of the squeeze, and FIG. 7 is an explanatory diagram of the prior art. (Explanation of the Japanese name of the main part IIji) ・1.2-
--- Partial frame 8.4 --- Input conveyor 8a, 4a
--- Unloading conveyor 5--11 joint conveyor 8.8'--1 molding stillage 9.9'-1--squeeze table (... 10--11 7 stage conveyor 11--One working cylinder 12--One movable hopper 15--One air hose 16--Pressure lid 17--One Fixed hopper 18
----Packet conveyor 19---Skirt A, ^----Pattern plate 0-111 Casting sand No. O Figure 7a p li. ``・22'su' 1shi,. m-evening-wrath l 7n 111111 ゝ: force 4 cause

Claims (2)

[Claims] (1) The upper and lower molds are alternately loaded onto the squeeze table, the movable hopper containing the charcoal sand is loaded onto the squeeze table, and the skirt of the movable hopper is lowered to form the movable hopper. Block the 1ftl space with the formwork, and at the same time,
Paste the number side of the movable hopper with a pressure-resistant lid, then increase the air pressure in the movable hopper to press the required amount of sand into the entire frame, and then operate the squeezing cylinder to squeeze out the skirt. The squeezer is tightened until it reaches its original position, and after the skirt is released, the operating cylinder for the squeeze is also turned on and off, and the formwork is sent from the squeeze station to the enemy station, which is connected to the compressed conveyor and the unloading conveyor.
This is an automatic mold making method using a blower method, which is characterized by repeating the process of separating the axis at this position and sending the released mold to the next core filling process. (2) A carry-in conveyor and a carry-out conveyor that move the upper and lower formwork separately are arranged in parallel, and between these two conveyors, another bag conveyor is provided which is connected to both conveyors in an approximately H shape, and this set, A squeeze station is installed in the middle of the conveyor, a pressure-resistant lid with an air hose and a squeeze cylinder are placed above and below the squeeze station, and a skirt to prevent sand leakage is installed around the lower outer periphery of the movable hopper. An automatic mold molding device using a blower type that carries out the method according to claim 1, which is fitted so as to be raised and lowered.