JPH02251400A - Powder forming press device - Google Patents

Abstract

PURPOSE:To shorten the cycle time and to improve the production efficiency by providing plural containers which can be moved separately on the powder forming press device. CONSTITUTION:While expanding a left pressure block use cylinder 36 and closing up the rear face opening of the left container 54 by a left pressure block 34, simultaneously, a left container slide use cylinder 42 is contracted, and the left container 54 is shifted to a powder supply position L. Subsequently, a right container 55 to which powder is supplied already is moved to a press center position C by expanding a right container slide use cylinder 43. Next, to powder in the right container 55, press forming is executed in the same way, and on the other hand, powder is supplied into the left container 54. In such a way, while press forming is being executed by one container, powder is supplied to the other container and it can be brought to waiting, and the cycle time can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a powder molding press device for molding powder by pressing.

[Prior Art] As shown in FIG. 4, a conventional powder molding press apparatus has a container 4 which can be raised and lowered and whose upper and lower surfaces are open and serves as a container for powder 3, on a lower plate 2 having a spigot 1 on the upper surface. is lowered, the container 4 is fitted to the pilot roller l, the bottom surface of the container 4 is sealed, and the powder 3 is supplied into the container 4 from the powder supply port 5 provided in the container 4, and then the powder 3 is inserted into the opening on the top surface of the container 4. The movably fitted pressure ram 6 is lowered to press and mold the powder 3 inside the container 4, and then the container 4 and the pressure ram 6 are raised in that order to transfer the molded product from the container 4 to the inlet of the lower plate 2. After taking out the upper surface of the part and removing the molded product, the above-mentioned operations are repeated to continuously manufacture the molded product.

[Problems to be Solved by the Invention] However, the conventional powder molding press device as described above,
Because there is only one container 4, in the series of operations from supplying the powder 3 to removing the molded product, the time required to supply the powder and pressurize and compress the powder while degassing is extremely long. The disadvantage is that the larger the powder size and the higher the compression ratio, the worse the production efficiency becomes.

In view of these circumstances, the present invention aims to provide a powder molding press device that can improve production efficiency.

[Means for Solving the Problems] The present invention includes a guide frame installed below a stem that is arranged to be able to rise and fall freely, and the guide frame has an opening on its upper and lower surfaces, is biased downwardly by an elastic member, and is horizontally A plurality of sets of container slide frames on which are placed containers each having a flange portion projecting from the bottom are guided so that each container can reciprocate together with each container slide frame at least between a position below the stem and a powder supply position. A pressure block is disposed slidably along the frame, and a pressure block capable of opening and closing the lower surface opening of each container is disposed at the bottom of each container of each container slide frame so as to be freely slidable along each container slide frame. Further, a container lifting rod is disposed below the stem so as to be able to rise and fall and pushes up the lower surface of the flange in order to lift the container located below the stem from the container slide frame against the biasing force of the elastic member. The present invention is characterized in that a container pushing-up mechanism is formed, and an ejecting mechanism is formed below the stem, which is provided with a pedestal that can be raised and lowered and on which a molded product can be placed.

[Operation] Therefore, one set of the plurality of container slide frames is moved along the guide frame for tN to move the container containing the powder to a position below the stem, and the stem is lowered to fit into the container. The powder is pressure-molded, the stem is raised by the required amount, and the container lifting rod of the container lifting mechanism is raised by the required amount to lift the container from the container slide frame against the biasing force of the elastic member. In this state, slide the pressure block that had previously blocked the bottom opening of the container along the container slide frame to open the bottom opening of the container. is raised until it is located near the bottom surface of the pressure-molded molded product, and the container push-up rod is lowered to bring the container into contact with the container slide frame, and then the stem is lowered again to push the molded product out of the container, When the molded product is completely extruded from the container, the stem is raised above the container and the pedestal on which the molded product is placed is lowered below the bed, the molded product is carried out, and the bottom opening of the container is closed with a pressure block. At the same time, the container slide frame is slid along the guide frame and moved from the position below the stem to the powder supply position.

During this time, the containers on the other sets of container slide frames are being supplied with powder at the powder supply position, and the -
At the same time that the containers on the set of container slide frames move from the position below the stem to the powder supply position, the containers on the container slide frames of the other set move to the position below the stem.

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

1 to 3 show an embodiment of the present invention, in which bit 1
Bed 1 installed on 0 using support bracket 11
A cylinder frame 14 is disposed above the column 13 via a support 13, and a main cylinder 15 is attached to the cylinder frame 4.
and the side cylinder 16 is fitted vertically downward, a crosshead 19 is attached to the tip of the main cylinder ram 17 of the main cylinder 15 via the ram fixing flange 18, and the tip of the rod 20 of the side cylinder 16 is fixed to the crosshead 19. , the stem 21 is fixed vertically downward to the lower surface of the crosshead 19. In addition, in Figure 1, 2
2 shows a pond tank installed on the cylinder frame 14 via supports 23.

Also, there is a horizontal straight line on the bed 12 that intersects the stem axis (press center)! A guide frame 25 extending parallel to the left and right direction and having guide grooves 24 formed on opposing surfaces is fixed between the guide frames 25, and connecting members 26 at both ends are fixed between the guide frames 25.
The left container slide frame 27 connected at both ends and assembled into a rectangular shape, and the right container slide frame 29 connected at both ends by connecting members 28 and assembled into a rectangular shape can freely slide along the guide groove 24 of the guide frame 25. The left and right container slide frames 27.29 are arranged between the left and right container slide frames 27.29, respectively.
Concave grooves 32.33 that engage with convex portions 30.31 on each facing surface of
Left and right pressure blocks 34.35 are arranged, and rods 38.39 of left and right pressure block cylinders 36.37 are fixed to the connecting members 26. The left and right pressure block cylinders 36 are connected at their ends.
．． Left and right pressure blocks 34.35 due to expansion and contraction of 37
The left and right container slide cylinders 42 and 43 are respectively attached to support members 40 and 41 fixed to both ends of the guide frame 25, respectively. Rod 44 of cylinder 42 and 43 for left and right container slides
．． 45 tips are fixed to the connecting members 26.28 of the left and right container slide frames 27.29, respectively, and the left and right container slide frames 27.29 are connected to the guide frame 25 by the expansion and contraction of the left and right container slide cylinders 42 and 43, respectively. Left and right containers 54, which will be described later, are slid along the
．． 55 are configured to be able to reciprocate between the press center position (position below the stem) C and the left and right powder supply positions R, respectively.

In Fig. 1.3, 46.47 is for allowing the left and right pressure block cylinders 36,37 to penetrate through the support members 40,41 when the left and right container slide cylinders 42,43 are respectively contracted. A drilled hole is shown.

Further, four fixing rods 48 are erected at required positions on the right side of the left container slide frame 27, and a container sleeve 50 is provided at the center so as to be inserted into each of the fixing rods 48.
The container blocks 52 that are integrally fitted and constitute the left container 54 are placed on the left container slide frame 27 so that only upward movement is allowed, and the containers are attached to each of the fixing rods 48, respectively. An elastic member 56 such as a spring is provided to urge the block 52 downward and press it against the left container slide frame 27 or the left pressure block 34, and the lower opening 58 of the container sleeve 50 of the left container 54 is opened as the left pressure block 34 slides. Allows opening and closing.

Similarly, four fixing rods 49 are erected at required locations on the left side of the right container slide frame 29, and a container sleeve 5 is placed in the center so as to be inserted into each of the fixing rods 49.
The container block 53 that is fitted into one piece and constitutes the right container 55 is attached to the right container slide frame 29.
The container block 53 is placed on the top so that only upward movement is allowed, and each of the fixed lots 49 is provided with a spring or the like that urges the container block 53 downward and presses it against the right container slide frame 29 or the right pressure block 35. An elastic member 57 is provided to connect the bottom opening 59 of the container sleeve 51 of the right container 55 to one of the right pressure blocks 35.
η to be able to open and close with movement.

Furthermore, the tip of the rod 61 of the container thrusting cylinder 60 arranged vertically upward in the bit IO is connected to the bed 1.
2, a support plate 62 is attached to the main body of the container thrusting cylinder 60, and a container block on either the left or right side whose tip part passes through the bed 12 and the guide frame 25 and is located at the press center position C is attached to the support plate 62. 52 or 53
Four container thrusting rods 65 that can come into contact with the lower surface of the flange portion 63 or 64 are erected, and the support plate 62 and the container thrusting rods 65 are raised and lowered by contraction and expansion of the container thrusting cylinder 60. Either the left or right container block 52 or 53 is connected to the elastic member 5B or 57.
A container pushing-Ling mechanism 66 is formed for lifting the container by a required amount from either the left or right container slide frame 27 or 29 against the urging force of the container slide frame 27 or 29.

On the other hand, a through hole 67 is bored at the press center position C of the bed 12, and the through hole 67 is connected to the stem 21.
The pedestal lifting cylinder 68 is installed vertically at the press center position C of No. 2, and the rod 6 of the pedestal lifting cylinder 68 is
A pedestal 72 is fixed to the tip of 9 on which a molded product 71 that can pass through the through hole 67 and pressurized powder 70 is placed, and a pedestal 72 is fixed to the lower surface of the pedestal 72 by penetrating the support plate 62. A carry-out mechanism 7 is provided with a guide rod 73 that extends vertically downward and prevents wobbling of the pedestal 72, and lifts and lowers the pedestal 72 by expanding and contracting the pedestal elevating cylinder 68 to carry out the molded product 7I.
form 4.

In addition, in FIG. 2, 75 indicates a pressure plate provided on the bed 12 to support either the left or right container slide frame 27 or 29 located at the press center position C and the pressure block 34 or 35. .

Next, the operation of the above embodiment will be explained.

As shown in Fig. 3, the left and right pressure block cylinders 3
6. Extend 37 and press left and right pressure blocks 3.
4.35, left and right container 54.55 bottom opening 58.5
9 is closed, the powder 70 is fed by a powder supply device (not shown, but see, for example, the specification of Japanese Patent Application No. 1438/1982) installed on the left side of the press device in FIG. 1.3.
By extending the left container slide cylinder 42, the left container 54 supplied with
is moved along the guide frame 25 together with the right container slide frame 29 to the powder supply device R on the right side of the press device by contracting the right container slide cylinder 43 (as indicated by the solid line in Fig. 1.3). state).

Subsequently, by extending the main cylinder 15 and the side cylinder 16, the stem 21 is lowered and inserted into the container sleeve 50 of the left container 54, and the powder 70 in the container sleeve 50 is press-molded. ,
Powder 70 is supplied into the container sleeve 51 of the right container 55 by a powder supply device (not shown) installed on the right side of the press device.

When the pressure molding of the powder 70 in the left container 54 is completed, the stem 21 is raised by a required amount of ffl (approximately 5 ms) and the container push-up cylinder 60 is contracted to raise the container push-up rod 65 and move the container to the left. The container 54 is floated by a required amount from the left container slide frame 27 and the left pressure block 34 against the biasing force of the elastic member 56.

After that, by contracting the left pressure block cylinder 36, the left pressure block 34 is moved leftward from the press center position C to the left container slide frame 27.
, open the lower opening 58 of the left container 54, extend the container thrust cylinder 60, lower the container thrust rod 65, and open the left container 54.
Place it on the left container slide frame 27 again.

In this state, the pedestal lifting cylinder 68 is extended, and the pedestal 7
When the upper surface of the molded product 71 in the left container 54 is raised until the upper surface of the molded product 71 is located near the lower surface of the molded product 71 and the stem 21 is lowered, the molded product 71 is pushed out from the left container 54 and the pedestal 72 holds the molded product When it is confirmed by a limit switch or the like (not shown) that the pedestal 72 has been pushed down to a predetermined height position, that is, that the molded product 71 has been completely pushed out of the left container 54, the pedestal 72 is pressed down. The platform elevating cylinder 68 is contracted to lower the pedestal 72 on which the molded product 71 is placed, and at the same time, the stem 21 is raised, and the molded product 71 is carried out by a handling device such as a manipulator (not shown).

After the stem 21 rises, the left pressure block cylinder 36 is extended again and the left pressure block 34
While closing the lower opening 58 of the left container 54, the cylinder 42 for sliding the left container is simultaneously contracted to shift the left container 54 to the powder supply position shown by the two-dot chain line in FIG. The supplied right container 55 is moved to the press center position C by extending the right container slide cylinder 43, and the powder 70 in the right container 55 is then pressure-molded in the same manner as described above. Powder 70 is supplied into the left container 54.

In this way, while the pressure molding operation is being performed on one of the left and right containers 54, 55, powder can be supplied to the other, thereby making it possible to shorten the cycle time and improve production efficiency.

In addition, when the powder 70 is being supplied to one of the left and right containers 54, 55, it may depend on the amount of supplied powder, or it may be that one of the containers cannot be moved to the press center position C at high speed. Slide frame 27.29
The structure is such that they can each move independently, rather than as a whole.
One container can be moved at an appropriate speed depending on the characteristics of the powder, and the other empty container can be moved to the powder supply position at high speed. Furthermore, if it is necessary to adjust the production volume, only one can be operated, and if one breaks down, the other can continue to be operated, while the other can be repaired. It is also possible to do so.

It should be noted that the powder compacting press apparatus of the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] When molding powder, it takes a very long time to supply the powder to the top-open container used in the present invention and to pressurize and compress the powder while degassing it. This is common, and becomes more noticeable as the molded product becomes larger or the powder has a higher compression ratio. Since two containers are provided, the powder-supplied container can be moved to the center of the press at an appropriate speed depending on the characteristics of the powder and the amount supplied, and while pressure forming is being performed using one container, It becomes possible to supply powder to another container and keep it on standby, which has the excellent effect of shortening cycle time and improving production efficiency.

[Brief explanation of drawings]

Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is an enlarged sectional view in the direction ■-■ of Fig. 1, Fig. 3 is a sectional view taken along -■ of Fig. 1, and Fig. 4 is a conventional example. FIG. 12 is the bed, 21 is the stem, 25 is the guide frame, 2
7 is the left container slide frame, 29 is the right container slide frame 1 norm, 34 is the left pressure block, 35
is a right pressure block, 54 is a left container, 55 is a right container, 56.57 is an elastic member, 58.59 is a bottom opening, 63.64 is a flange portion, 65 is a container push-up rod, 66 is a container push-up mechanism, 67 is a through hole, 71
is a molded product, 72 is a pedestal, 74 is a delivery mechanism, ! is a straight line, C
indicates the center position of the press (position below the stem), and L and R indicate the powder supply position.

Claims (1)

[Scope of Claims] 1) A guide frame is installed below the stem that is arranged to be able to move up and down, and the guide frame has a flange that is open at the top and bottom, is urged downward by an elastic member, and projects horizontally. A plurality of sets of container slide frames each carrying a container having a section formed thereon are moved along a guide frame so that each container can reciprocate integrally with each container slide frame at least between a position below the stem and a powder supply position. A pressure block is slidably disposed along each container slide frame, and a pressure block capable of opening and closing the lower surface opening of each container is disposed at the bottom of each container of each container slide frame, and further, A container protrusion is provided below the stem, and includes a container push-up rod that is movably disposed below the stem and pushes up the lower surface of the flange in order to float the container located below the stem from the container slide frame against the biasing force of an elastic member. A powder molding press apparatus, characterized in that a lifting mechanism is formed, and an unloading mechanism is formed below the stem, which is equipped with a pedestal that can be raised and lowered and on which a molded product can be placed.