JPH0519199Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is used in a press machine in which a press-molded product is lifted out of the mold and then taken out by gripping a part of the periphery with a manipulator or the like. This invention relates to a raised platform installed between the press bed of a press machine and a molding die.

BACKGROUND ART In order to take out a molded product from a mold of a press machine, there are various types of lift mechanisms that lift the molded product from the mold and release it. As shown in FIG. 5, for example, the lift mechanism includes a lift plate 5 equipped with lift pins 4, 4 for lifting the molded product 3, which is movable up and down in the mold 2 installed on the press bed 1 of the press machine. lift plate 5
It has a structure in which a lift cylinder 6 is attached below and a piston rod 6a of the lift cylinder 6 is connected to the lift plate 5. When taking out the molded product 3, the lift cylinder 6 is extended and the lift plate 5 and the lift pin 4, raise 4,
The upper ends of the lift pins 4, 4 are made to protrude from the upper surface of the mold 2, and the molded product 3 is lifted up by the lift pins 4, 4.

In addition, as shown in FIG. 6, as a lift mechanism of another structure, a mold side cushion plate 8 having lift pins 7, 7 fixed upright is provided in a mold 2 installed on a press bed 1 so as to be movable up and down. Mold side cushions 9, 9 are provided below the cushion plate 8,
It has a structure in which the lower ends of the cushion pins 9, 9 are inserted into the press machine by passing through the press bed 1, and brought into contact with a machine-side cushion plate 10 provided inside the press machine, so that the machine-side cushion press is always connected. 10, the mold side cushion pins 9, 9 are pushed up, and the lift pins 7, 7 are made to protrude from the mold 2 through the mold side cushion plate 8. During molding, the advance presser provided on the upper mold (not shown) is Machine-side cushion pins 12, 12 are erected and fixed to the machine-side cushion plate 10 by pins 11, 11.
is pressed to lower the machine-side cushion plate 10, thereby housing the lift pins 7, 7 in the mold 2 and performing molding. After molding, when the advance presser pin 11 rises, the machine-side cushion plate 10 simultaneously rises to project the lift pins 7 and lift the molded product 3.

For each of the above-mentioned lift mechanisms, if there is time to take out the molded product 3, it is necessary to use a lift mechanism such as the former using the lift cylinder 6 to quickly take out the molded product like a transfer press. If the case is a responsive cushion plate 8,1
A lift mechanism using 0 and cushion pins 9, 9 is used.

Problems that the invention aims to solve All conventional lift mechanisms were built into the mold 2, which resulted in a large mold 2, a complex structure, and a large number of parts. Production costs were high. Moreover, since the mold 2 is manufactured to match the shape of the molded product 3, if the shape of the molded product 3 changes, a new mold 2 must be manufactured, and a new lift mechanism must be installed in the mold 2 each time. This required a huge amount of expense to replace the mold.

Therefore, in order to keep costs associated with mold replacement low, it has been desired to make the mold 2 smaller and to provide versatility to the lift mechanism so that the lift mechanism can be shared during mold replacement. However, the conventional mold 2 has been extremely difficult to downsize due to the necessity of providing a lift mechanism. Usually, multiple press machines are arranged in tandem, or multiple molds are arranged in one press machine such as a transfer press machine, and the molded products are sequentially fed and molded using an appropriate conveyance means to produce the product. In order to be used in this way, the height of each mold on the tandem line and the top height of the mold inside the transfer press machine must always be set at a constant level, which also poses an obstacle to downsizing mold 2. I was getting used to it.

Means for Solving the Problems This invention consists of a mold and a press bed of a press machine, which are equipped with a lift plate equipped with a lift pin for taking out the molded product, and a plurality of mold-side cushion pins that horizontally raise and lower the lift plate. A support base installed between the pressbed and the base to keep the height of the upper surface of the mold constant, the base body being a hollow box and fixed on the pressbed and fixing the mold on the upper surface;
It consists of a plurality of lift cylinders installed at equal intervals in the front, rear, left, and right directions on the table main body, and a plurality of table-side cushion pins that are moved up and down in conjunction with a machine-side cushion plate of the press machine, and the lift cylinder or the table-side cushion pin is arranged opposite to the mold-side cushion pin of the mold fixed on the base body.

Function: The elevated platform with the above configuration compensates for the height of the mold, which has become smaller, and sets the height to a certain level. By selectively operating the cylinder or the table-side cushion pin, the mold-side cushion pin in the mold is raised and lowered, and the molded product is taken out using the lift pin.

Embodiment FIG. 1 is a drawing showing an embodiment of the present invention, in which 15 is a press bed of a press machine, 16 is a press bed of a press machine, and
Reference numeral 17 denotes a raised base installed on the press bed 15, and a mold installed on the raised base 16.

A large number of through holes 18 are formed in the press bed 15 at predetermined pitches, and a machine-side cushion plate operated by an air cushion (not shown) is provided below the press bed 15.

The raising stand 16 is formed in a box shape with a base body 19 open at the bottom, and the die installation portion of the upper wall 19a is a through hole 1 formed in the press bed 15.
8. The support tube portion 20 is recessed downward at a position corresponding to the support tube portion 20.
1, and a platform side cushion pin 21 constituting a lift mechanism is provided in the support cylinder 20 so as to be movable up and down. The height of the raising platform 16 is set so that the height of the upper surface of the die 17 placed on the upper surface is at a predetermined level. The platform side cushion pin 21 is formed to be sufficiently longer than the height of the raising platform 16, and its lower end is inserted into the press machine by slidably passing through a through hole 18 formed in the press bed 15, and is abutted against a machine side cushion plate (not shown) provided in the press machine. As shown in Fig. 2, a large number of the platform side cushion pins 21 are provided at equal intervals in the front, rear, left and right directions. Also, between each platform side cushion pin 21 in the raising platform 16, lift cylinders 2 constituting another lift mechanism are provided.
2, and the piston rod 22a of the lift cylinder 22 is adapted to project upward from the upper wall 19 of the raising platform 15.

The mold 17 has an upper surface that matches the shape of the molded product 3, and a lift plate 24 with lift pins 23, 23 fixed in an upright position at an appropriate number of places on the upper part is provided so as to be movable up and down, and below the lift plate 24, a lift plate 24 is provided on the reinforcement base 16. A mold side cushion pin 25 is provided so as to be movable up and down in correspondence with the piston rod 22a of the lift cylinder 22. A large number of mold-side cushion pins 25 are provided below the lift plate 24 in order to horizontally raise and lower the lift plate 24.

In the above structure, the upper end of the table-side cushion pin 21 provided on the lifting base 16 is housed in the mold 17, but the upper end of the table-side cushion pin 21 is cut off from the mold-side cushion pin 25 so that the lift pins 23, 23 are not operated by the table-side cushion pin 21. do. To take out the molded product 3, the lift cylinder 22 provided on the replenishment base 16 is extended, and its piston rod 22a pushes up the mold-side cushion pin 25. The mold-side cushion pin 25 pushes up the lift plate 24, and Lift pins 23, 23 provided
The lift pin 2 is made to protrude upward from the mold 17.
3 and 23, lift the molded product 3, and then take out the molded product 3 using an animulator or the like. When charging the material, the lift cylinder 22 is shortened to lower the mold-side cushion pin 25, thereby lowering the lift plate 24 and lift pins 23, 23 to be accommodated in the mold 17. After molding, the above operation is repeated to take out the molded product 3.

FIG. 3 is a drawing showing an example in which the reinforcement base 16 is used for another mold 26. In this embodiment, a lift plate 24 equipped with lifts 23, 23 is provided on the mold 26 so as to be movable up and down, and the lift plate 24 is A mold-side cushion pin 27 is provided below in correspondence with the base-side cushion pin 21 provided on the reinforcement base 16.
A large number of mold side cushion pins 27 are also provided to horizontally raise and lower the lift plate 24. In this case, the machine side cushion pins 29 and 2 are connected to the machine side cushion plate built in the press machine.
9, and the machine side cushion pin 29,
29 is made to protrude upward from the reinforcement base 16.

In the above structure, during standby, the machine-side cushion plate pushes up the table-side cushion pin 21, and the table-side cushion pin 21 pushes up the mold-side cushion pin 2.
7 is pushed up, and the lift plate 24 is further pushed up by the mold side cushion pin 27, so that the lift pins 23, 23 provided on the lift plate 24 are made to protrude from the mold 26. The molding material is therefore introduced onto the protruding lift pins 23, 23. During molding, first, the machine-side cushion pins 29, 29 are pushed down by a leading pin (not shown) provided on the upper mold, and the machine-side cushion plate is lowered, whereby the table-side cushion pin 21, the mold-side cushion pin 27, The lift plate 24 and lift pins 23, 23 are lowered to place the molding material on the mold 26, and then molding is performed using the upper mold. When molding is completed and the upper mold is raised, the machine-side cushion plate rises and pushes up the table-side cushion pin 21, and then the mold-side cushion pin 27 is pushed up to lift the lift plate 24, and the lift pin provided on the lift plate 24 is lifted. 23, 23 are made to protrude from the mold 16 and the molded product 3 is lifted up. After this, the molded product 3 is taken out using a manipulator or the like. Thereafter, the above-described operations are repeated to take out the molded product 3. In this case, the lift cylinder 22 does not operate at all.

As described above, the elevated base 16 can take out the molded product 3 in correspondence with either the lift cylinder mold 17 or the air cushion mold 26.

In addition, the lift cylinder 2 provided on the elevated platform 16
2 is a mold side cushion pin 2 provided in the mold 17, which is not used entirely when taking out the molded product 3.
Only the lift cylinder 22 corresponding to No. 5 is selected and operated.

Further, when the above-mentioned reinforcement stand 16 is used, the stand-side cushion pin 21 can be used not only for taking out the molded product 3 but also for molding the material. That is, as shown in FIG. 4, a material presser 31 is provided on the mold 30 so as to be movable up and down, and a mold side cushion pin 3 is installed at the bottom of the material presser 31.
2 is provided, and the lower end of the mold side cushion pin 32 is connected to the base side cushion pin 21 provided on the reinforcement base 16.
bring it into contact with. On the other hand, a machine side cushion pin that is operated from the press machine to the upper die is not provided.
Then, the material 3 is placed on the material presser 31 lifted by the machine side cushion plate via the mold side cushion pin 32 and the table side cushion pin 21.
During molding, the material 33 is held down by the upper die, and the material 33 is held between the material presser 31 and lowered, and during this lowering, the edge 34 provided in the mold 30 performs molding. When the upper mold is raised after molding, the machine-side cushion press is automatically raised, thereby pushing up the material presser 31 via the table-side cushion pin 21 and the mold-side cushion pin 32 to lift and remove the molded product. In this way, the material 33 can be molded upward without being inverted.

Effects of the invention If the height of this invention is used, the height of the mold can be corrected with the height of the height, so the mold can be made smaller, and a lift mechanism such as a lift cylinder or cushion pin can be built into the height of the height. Because there are
The mold only needs to be provided with a lift pin, etc. to lift the molded product by being pushed up by the lift mechanism, which reduces the number of parts and simplifies the structure, making it possible to manufacture the mold at low cost, and to improve the molding process. The cost of replacing molds due to changes in the shape of the product can be significantly reduced. Furthermore, since the mold used can be applied to either a lift cylinder mold or an air compression mold, a press machine can be shared, and the price of the entire press machine can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the present invention;
Figure 2 is a plan view of the main part of the elevated platform showing an example of the arrangement of cushion pins and lift cylinders, Figures 3 and 4
The figure is a sectional view of a main part showing another embodiment, and FIGS. 5 and 6 are sectional views of a main part of a conventional press machine. 15...Presbed, 16...Elevated platform, 17
...Mold, 21...Base side cushion pin, 22...
...Lift cylinder, 23...Lift pin.

Claims (1)

[Scope of utility model registration request] A lift plate equipped with lift pins for taking out molded products and a plurality of mold-side cushion pins for horizontally raising and lowering the lift plate are installed between the mold and the press bed of the press machine, and the upper surface of the mold is It is a raised platform that maintains a constant height, and is a hollow box that is fixed on the pressbed and has a platform body that fixes the mold on the upper surface, and a platform body that is installed at equal intervals front, rear, left and right on the platform body. , a plurality of lift cylinders and a plurality of table-side cushion pins that are moved up and down in conjunction with a machine-side cushion plate of a press machine, and the mold side of the mold has the lift cylinders or the table-side cushion pins fixed on the table body. A raised base for a plate machine characterized by being placed opposite to a cushion pin.