JPS60238098A - Hydrostatic forming device - Google Patents

Abstract

PURPOSE:To provide a titled device which permits easy replacement of a high- pressure packing of a top cap and positioning of the top cap and a vessel by providing a top cap holding carriage having a lifting means to a vessel holding carriage which moves to a vessel contg. space of a body frame. CONSTITUTION:The vessel holding carriage 9 is moved from the lateral side of the body frame 5 to the vessel contg. space 6 of the hydrostatic forming device. The top cap 1B is hoisted and supported to the top cap holding carriage 18 supported to said carriage 9. The cap 1B is moved upward and downward by a means such as the 2nd cylinder 21. The carriage 9 brought into the space 6 is moved upward and downward by the carriage lifting device 41 so that the vessel 1 is seated on a vessel stage 8. The increase in the occupying space is obviated by such device.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for compression molding powders such as ceramics using hydrostatic pressure.

Structure of conventional example and its problems Hydrostatic pressure molding in which a container with a top lid is inserted into the container storage space of the main frame -1- and hydrostatic pressure is applied inside the container to compression mold the object to be molded inside the container. As the format of the device,
- There are two types: one in which the 2M remains on the main body frame side, and the other in which the top lid remains on the container side. As an example of the former,
-12645, and as an example of the latter,
There is 2911@.

According to Japanese Patent Publication No. 52-12645, the upper lid 17 and the piston rod 19 of the upper lid lifting device 18 are connected.
Maintenance such as replacing the high-pressure gasket of the upper lid 17 is extremely inconvenient. Further, according to Utility Model Publication No. 53-32911, the moving device 18.19 for the upper inner lid 12 and the moving device 10.11 for the container body 2 are completely independent, and the heavy container body 2 and the upper inner lid are completely independent. 12 requires an expensive mechanism. In addition, a space is required above the container body 2 for the object to be molded 5 to enter and exit.
The rising strike [1-ri needs to be extended significantly upwards,
It occupies a large space (which leads to an increase in costs).

OBJECT OF THE INVENTION-2- An object of the present invention is to provide a hydrostatic press molding apparatus that eliminates the above-mentioned conventional drawbacks.

Structure of the Invention In order to achieve the above object, the hydrostatic press forming apparatus of the present invention is provided with a main body frame having a container storage space in the center, and a container holder that is movable from the side of the main body frame into the container storage space. A top lid holding cart is provided, which is movably supported by the container holding cart, and a top lid lifting device is provided for suspending and supporting the top lid on the top lid holding cart and lifting and lowering the top lid. A platform for lifting and lowering the container is provided for lowering the container holding cart and placing the container on the main body frame.

Embodiment and Function An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, reference numeral 1 denotes a high-pressure container for storing a molded object 2, and is composed of a container body 1A and a -F lid 1[3.

3 is a water supply and drainage port formed at the bottom of the container main body 1A, and 4 is an air handling port formed in the upper lid 1B. Reference numeral 5 denotes a main body frame having a container storage space 6 in the center, a top lid holding plate 7 at the top of the space 6, and a container mounting stand 8 at the bottom of the space 6. Reference numeral 9 denotes a container holding cart which is movable in the direction of the arrow from the side of the main body frame 5 into the space 6, and has a cart main body 10 and wheels 11. The lower part of 1A is fitted. Reference numeral 13 denotes a first cylinder for moving the container holding trolley whose main body is fixed to the fixed body 14 and whose piston rod tip is connected to the above-mentioned trolley main body 10; A pair of guide rails 18 are fixed at regular intervals and extend in the direction of the arrows.As shown in FIGS.
Arrow A, [upper lid holding trolley fitted so as to be movable in three directions,
Reference numeral 20 denotes an elevating frame disposed above the holding cart 18, and 21, a main body is fixed to the center of the upper surface of the frame 20, and the lower end of the piston rod 21A passes through the center through hole of the frame 20 to extend the upper lid holding cart 18. The second cylinder 22 for lifting and lowering the lifting frame connected to the center of one side has its upper end fixed to the four corners of the frame 20, and its lower end is a guide inserted into the sleeve 23 of the top cover holding cart 18 so as to be able to move up and down. Rod, 24 has arrows △ on both ends
, a pair of heads fixed to the lower ends of both guide rods 22 facing each other along the direction B, and fitted into grooves 25 formed along the directions of arrows A and B on both sides of the lid 1B. It is free. Note that the height H2 of the head 24 is made larger than the height 1]1 of the head 24, and a slight gap α is created between the two 24.25. Reference numeral 26 denotes a shock absorbing device, which includes a boss 27 fixed in two through holes of the top cover holding cart 18, a buffer rod 28 inserted into the boss 27, and a spring urging the buffer rod 28 upward. 29 and! It consists of a retaining ring 30 fixed to the lower end of the filli rod 28. Reference numeral 32 denotes a contact block disposed directly above each shock absorber 26 on the lower surface of the elevating frame 20, and an upper lid balance position detection switch 33 is disposed on the lower surface thereof. Note that the urging force of the spring 29 is defeated by the pressing force of the second cylinder 21, but when the pressing force disappears, the head 24
The main body of the elevating frame 20 and the second cylinder 21 is set so that it can be lifted up and down.

Reference numeral 34 indicates a proximity switch fixed to a support frame at a suitable position on the outer circumference of the upper surface of the top lid holding cart 18, and 35 indicates a detection piece fixed to a position directly above the proximity switch 34 on the lifting frame 2o, and the upper end head of the buffer rod 28. When the upper lid balance position detection switch 33 is in contact with the upper lid balance position detection switch 33, it is not activated yet, and when the lifting frame 2° is further approached by the upper lid holding cart 18 at a predetermined distance from this state, the approach of the piece 35 is detected and activated. It is configured to do so. 36 is a positioning bin perpendicular to the two corners of the lower surface of the top cover holding cart 18,
It can be freely inserted into and removed from the positioning holes 31 of the positioning projections at the two corners of the upper lid 1B. 38 is a third cylinder for moving the top lid holding cart whose main body is fixed to the machine frame 16 and whose piston rod tip is connected to the top lid holding cart 18; 39 is a water pressure unit disposed on the container holding cart 9; 41 is a hydraulic unit disposed on the container holding cart 9; The cart lifting device is disposed in a recess formed under the wheels 11 to support the wheels 11 when the container holding cart 9 is moved and the containers 1 are brought to a predetermined position in the space 6. It is comprised of a base plate 42, a fourth cylinder 43 for raising and lowering the base plate, and the like. In FIG. 9, 44 is the main body frame 5.
This is a lid holding device disposed at one corner of the top cover holding plate 7, and the main body is fixed to the top cover holding plate 7, and the piston rod 45A is inserted into the through hole 46 of the top cover holding plate 70. It is composed of a fifth cylinder 45 and an engaging fitting 47 fixed to the lower end of the screw 1 rod 45A. Large diameter portion 4 brought into contact with the upper surface
7B. Reference numerals 48 and 49 indicate an upper limit detection limit switch and a lower limit detection limit switch, which are disposed above and below the striker 50 at the upper end of the piston rod 45A.

The molding method will be explained based on the above configuration. First, the object to be molded 2 is inserted into the container body 1A in the first state. Next, as shown in FIG. 2, the piston rod of the third cylinder 38 is extended, and the top lid holding cart 18 is moved in the direction of the arrow to bring the top lid 1B directly above the container body 1A.

Next, the main body of the second cylinder 210 is lowered, thereby lowering the elevating frame 20. As a result, the seventh
The head 24 shown in the figure is also lowered and the upper lid 1B fits into the upper opening of the container body 1A. When the head 24 is moved further down, the lower surface of the head 24 is aligned with the groove 24.
The top lid 1B is pushed into the top opening of the container body 1Δ.

At this time, the contact block 32 pushes the buffer rod 28 against the spring 29 via the upper lid balance position detection switch 33, and the switch 33 issues a ``1 lid balance position detection signal.'' Next, as shown in FIG. 3, when the top lid 1B is completely inserted into the top opening of the container body 1A, the proximity switch 34 is turned on by the approach of the detected piece 35, and a top lid insertion completion detection signal is issued. The signal causes the hydraulic pressure in the second cylinder 21 to become unloaded, and the restoring force of the spring 29 causes the lifting frame 20 to
The main body, guide rod 22 and head 24 of the second cylinder 21 are lifted up, and the lower surface of the head 24 is separated from the bottom surface of the groove 25 as shown in FIG.
is turned off and the top lid balance signal is generated. Moreover, the piston rod of the third cylinder 38 is reduced by the lid balance signal, and the upper lid holding carriage 1 is moved as shown in FIG.
8 is moved in the direction of arrow B, and the head 24 is pulled out from the groove 25. At this time, as described above, since the lower surface of the head 24 is apart from the bottom surface of the groove 25, the head 24
4 can be pulled out smoothly from the groove 25. Next, as shown in FIG. 5, the piston rod of the first cylinder 13 is contracted, the container holding cart 9 is moved in the direction of the arrow, and the container 1 is inserted into the container storage space 6. Next, the piston rod of the fourth cylinder 43 of the truck lifting device 41 is reduced, the base plate 42 is lowered, and the container 1 is placed on the container mounting table 8. Next, the fifth cylinder 45 in the state shown in FIG.
The piston rod 45Δ is lowered to fit the lower end small diameter portion 47A of the engagement fitting 41 into the positioning hole 37 to prevent the upper cover 1B from turning unexpectedly when pressurized. Further, when the striker 50 contacts the lower limit detection limit switch 49, the hydraulic pressure in the fifth cylinder 45 is set to no load based on the detection signal. Next, water is supplied into the container 1 from the water supply and drainage port 3,
The object to be molded 2 is subjected to C molding by applying a hydrostatic pressure of -9-. Due to the hydrostatic pressure of this knife" - lid 18
11B is lifted up, as shown in Figure 6.
Since the top cover holding plate 7 holds down the top cover 1B, the top cover 1B will not come off. Next, when the forming is completed, water is removed from the water supply and drainage port 3, the engagement fitting 41 is lowered by the fifth cylinder 45, the soil W1F3 is pushed down by its large diameter part 47B, and the top cover 1B is moved to the top cover holding plate 7. away from. Next, in the reverse procedure to the above, move the container holding cart 9 in the direction of arrow B, fit the head 24 into the groove 25 of the top lid 1B, lift the top lid 1B by -L to remove it, and move the top lid holding cart 18 in the direction of the arrow B. It is sufficient to move it in the direction B to bring it into the state shown in FIG. 1, and then take out the molded object 2 from inside the container body 1A.

In the above configuration, when the high-pressure gasket of the upper lid 1B is to be replaced, it is sufficient to slightly lift the upper lid 1B with a crane or the like in the state shown in FIG. 4, and replace it in the lifted state.

Effects of the Invention As described above, according to the present invention, since the lid is removable from the main body frame, maintenance such as replacing the high-pressure gasket on the upper lid can be performed relatively far from the main body frame. It is convenient and can be done in a large space. Since the top lid holding cart and the top lid elevating device are provided on the container holding cart, the container body and the top lid can be accurately positioned. In addition, sufficient space can be secured above the container body for the entry and exit of the molded objects, and for this purpose, there is no need to extend the upward stroke of the upper lid lift gi upwards, and the occupied space becomes large. Nor.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, and FIGS. 1 to 6 are longitudinal sectional views showing the molding procedure, FIG. FIG. 9 is a front view of the main parts with the top lid lowered, and a partially cutaway side view of the eleventh part of the main body frame. 1... Container, 1A... Container body, 1B... Top lid,
2... Article to be molded, 5... Main body frame, 6... Container storage space, 9... Container holding cart, 18... Top lid holding cart, 20... Lifting frame, 21... 2nd cylinder (top lid lifting device), -11- 24...Head, 41...Bogie lifting device agent Yoshihiro Morimoto-12- JP-A-Sho GO-238098 (10)

Claims (1)

[Claims] 1. Provide a main body frame with a container storage space in the center,
A container holding cart is provided which is movable from the side of the main body frame into the container storage space, a top lid holding cart is provided which is movably supported by the container holding cart, and the top lid is suspended and supported from the top lid holding cart. A hydrostatic press molding apparatus characterized in that a top lid lifting device is provided to raise and lower the top lid, and a cart lifting device is provided to lower a container holding cart brought into the container storage space and place the container on the main body frame.