JP2603779Y2 - Device for removing molded products from press molds - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an apparatus for removing a molded product from a press mold.

[0002]

[Industrial applications]

[0003]

2. Description of the Related Art Oni tiles have a complicated outer shape compared to ordinary tiles, and are often large and heavy. For this reason, in a conventional press mold, a cylindrical lower mold having a molding surface on an inner peripheral surface, and a lower mold having a molding surface on an upper surface slidably fitted in the lower mold in a vertical direction. A saucer-shaped core mold that constitutes the bottom of the mold, and having a molding surface corresponding to the molding surface of the lower mold and the core mold on the outer peripheral surface and the distal end surface, are fitted into the lower mold, and together with these two molds, It is composed of three molds, an upper mold for compression molding of oni tiles. The core mold in the lower mold is pushed up from below and the molded product located on the core mold in the lower mold is externalized. It is designed to be taken out.

[0004] As shown in FIG.
It is composed of a core mold 2 and an upper mold 3. The lower mold 1 has a cylindrical shape, the inner peripheral surface of which is formed on the molding surface 1a, and is fixed to the upper surface of the lower mold base 4. In addition, core type 2
Has a saucer shape, the upper surface of which is formed on the molding surface 2a, and is fitted inside the lower mold 1 so as to be slidable in the up-down direction to form a bottom portion in the lower mold 1. The upper die 3 has a large projection shape, and the entire outer peripheral surface and the front end surface thereof are formed on the molding surfaces 3a corresponding to the molding surfaces 1a and 2a of the lower die 1 and the core die 2, respectively.

In the molding die, an upper die 3 is placed in a lower die 1.
Are fitted to each other to compression-mould a rough land which is a raw material of a molded article arranged in the lower mold 1.
The molding surfaces 1 opposed to each other when fitted inside
It is configured such that a predetermined interval is secured between a, 2a, and 3a, and in this interval, the wasteland is compression molded to form a molded product. This molded product is located on the core mold 2 when the upper mold 3 is retracted upward, and the core mold 2 is pushed up from below by the knockout pin 5 so as to be integrated with the core mold 2. The molded article on the core mold 2 is taken out from the inside of the mold 1 and then lifted and transported by an operator.

[0006]

However, since the core die 2 is configured to slide on the molding surface 1a of the lower die 1 in the lower die 1, the lower die The first molding surface 1a and the outer peripheral surface of the core mold 2 that is in sliding contact with the molding surface 1a are worn, and a gap is generated between these two surfaces. For this reason, at the time of molding, a part of the waste land, which is the raw material of the molded product, enters the gap, and causes burrs on the outer periphery of the molded product. When burrs are formed on the molded product, the finished product must be subjected to a finishing process involving deburring work, which requires time and labor for the finishing process, greatly reduces productivity, and is particularly complicated as oni tiles In the case of a shape, the finishing process itself is not easy. In addition, since the molding surface 1a of the lower mold 1 is worn and damaged early by a part of the rough land that has entered the gap, extensive repair of the molding die is required.
In addition, since the transportation of the molded article by the operator involves a large amount of labor, the transportation operation is extremely heavy labor.

In order to prevent the above-mentioned mold from being worn and damaged on the molding surface and to prevent the occurrence of burrs on the molded product, the molding die may be configured not to use a core die. Further, in order to take out a molded product from the lower die where the core die does not exist, the lower die may be turned upside down, and if the removing means is employed, the molded product may be removed by the operator. Transportation work can be eliminated. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a suitable unloading device for inverting a lower die of a press-molding die in a vertical direction and extracting a molded product from the lower die.

[0008]

SUMMARY OF THE INVENTION The present invention is an apparatus for removing a molded article from a press mold, the apparatus comprising: a support base rotatably supported on a machine base in a horizontal direction; A vertically movable member mounted on an arm fixed to a rotating shaft rotatably supported by the vertically movable member and protruding sideways to engage with a lower die of a press molding die. An engagement rod that holds the lower die, a first driving unit that rotates the support base in a horizontal direction, a second driving unit that moves the lifting member up and down, and the engagement by rotating the rotation shaft. A third driving unit for vertically inverting the lower mold held by a rod is provided, and the molded article in the lower mold is taken out by inverting the lower mold in the vertical direction. Things.

[0009]

In the unloading apparatus having the above-mentioned structure, the lower die for accommodating the molded article carried out of the press-forming apparatus after the press-forming can be held by the engaging rod, and in this state, the second drive is performed. If the elevating member is raised by the action of the means, the lower mold containing the molded product is lifted from the carry-out table. Therefore, if the support table is rotated in the horizontal direction by the action of the first driving means in this state, the lower mold for accommodating the molded article can be positioned on the transfer table, and in this state or the second driving means. After the elevating member is moved down by the action of (3), if the lower mold is turned upside down by the action of the third drive means, the molded product in the lower mold is taken out onto the carrier.

Therefore, the use of the removal device makes it possible to use a mold that does not cause wear and damage of the mold itself and burrs of the molded product, that is, a mold that does not have a core mold. In addition, there is no need for an operator to take out a molded product from the lower mold of the same mold. That is,
It is possible to automatically take out the molded product in the lower mold and to convey it.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for removing a molded article according to one embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a removal apparatus 30 according to the present invention. The take-out device 30
Is for taking out a molded product from the molding die 10 shown in FIG. 6, and the molding die 10 is a press molding device 2 shown in FIG.
0 is used. As shown in FIG. 4, the unloading device 30 is a support 25
And a conveyor belt C for conveyance,
It functions so as to take out the molded product A in the lower mold 13 of the molding die 10 which is placed on the moving table 26 on the support table 25 and carried out.

The molding die 10 includes an upper die 11, a lower die 12, and a lower die base 13, as shown in FIGS. The upper die 11 has a large protrusion shape, and has an outer peripheral surface 11a and a distal end surface 11b of the protrusion protruding downward.
Are formed on the molding surface. The lower die 12 has a bottomed cylindrical shape, and its inner peripheral surface 12a and bottom surface 12b are formed on a molding surface. The forming surfaces of the respective surfaces 11a and 11b of the upper die 11 and the forming surfaces of the respective surfaces 12a and 12b of the lower die 12 correspond to each other, and when the upper die 11 is fitted into the lower die 12, Is formed with a predetermined width interval between both molding surfaces, and the rough ground is compression-molded within this interval to form a formed product. The upper mold 11 has a pair of guide pins 11c on both left and right sides, and the lower mold 12 has these guide pins 11c.
Has a guide hole 12c at a position corresponding to. The lower mold base 13 is a saucer-shaped one, and two front and rear
An engagement hole 13a is formed at a location. The lower mold 12 is fastened and fixed by an outward flange 13b at the upper edge of the lower mold base 13.

As shown in FIG.
A slider 23 mounted on each guide column 22 erected on the machine base 21 so as to be vertically slidable;
The upper die 11 of the molding die 10 is attached to the lower surface of the mold 3. Therefore, the upper die 11 is provided with the hydraulic cylinder 2 connected to the slider 23.
By the action of 4, it is possible to move up and down a predetermined amount in the vertical direction. Further, on the machine base 21, a support base 25 extending horizontally below the slider 23 is provided. As shown in FIG. 5, a pair of left and right rails 25a, 25b
Is provided, and a moving table 26 is mounted on both of the rails 25a and 25b. The movable table 26 is moved by the action of the hydraulic cylinder 27, and the lower mold 12 and the lower mold table 13 integrated therewith are mounted on the movable table 26.

The lower mold 12 on the movable table 26 and the lower mold table 13 integral therewith are engaged with the movable table 26 in the moving direction and are detachably mounted in the vertical direction. . Accordingly, the movable platform 26 moves with the lower mold 12 and the lower mold table 13 integrated with the lower mold 12 placed thereon, and if necessary, positions the lower mold 12 below the upper mold 11 of the press forming apparatus 20, Rough land, which is a raw material accommodated in the mold 12, is compression molded together with the upper mold 11, and then the lower mold 12 is moved to the tip of the support 25. A take-out device 30 is provided on the tip side of the support 25.

As shown in FIGS. 1 to 3, the take-out device 30 includes a support table 32 rotatably supported on a machine base 31.
And a pair of guide columns 32a, 3 erected on the support table 32.
An elevating member 33 assembled to the 2b so as to be vertically movable;
A pair of engaging rods 35a and 35b protruding from arms 34a and 34b fixed to both ends of a rotating shaft 34 rotatably supported by the elevating member 33 are provided. 3 drive means 36, 37, 38 are provided. Each of the arms 34a and 34b has a low height and isosceles triangular shape. The arms 34a and 34b are fixed to the rotating shaft 34 at the center of the top, and engaging rods 35a and 35b are provided at both corners. Each of the engagement rods 35a and 35b protrudes toward the support table 25 and the conveyor belt C, respectively, and is removably inserted into the engagement hole 13a of the lower mold table 13 on the movable table 26.

The first drive means 36 includes a drive motor 36 a provided on the machine base 31 and a large-diameter gear 3 provided on the outer periphery of the support base 32.
6b and a small-diameter gear 36c. The small-diameter gear 36c is connected to the drive shaft of the motor 36a and meshes with the large-diameter gear 36b. Therefore, the first driving means 36 rotates the support base 32 in the horizontal direction by driving the motor 36a.

The second driving means 37 includes a driving motor 37a, a first sprocket 37b, a second sprocket 37c, a driving chain 37d, a connecting chain 37e, and a weight 37.
f. The motor 37a is the guide support 32
a, a first sprocket 37b is provided at an end of a drive shaft of a motor 37a, and a support bracket 32c is provided on an end of a drive shaft of the motor 37a.
A second sprocket 37c is provided at an end of a rotation shaft 37g rotatably supported by the rotation shaft c. Drive chain 37d
Are suspended from these two sprockets 37b and 37c, and driven by a motor 37a.
Is driven to rotate. The connecting chain 37e is a rotating shaft 37g.
The third sprocket 37h provided at the end of the third sprocket and the fourth sprocket 3 rotatably supported by the support bracket 32c.
The lifting member 33 and the weight 37f are connected to each other via 7i. The lifting member 33 stops at a predetermined position by the action of the weight 37f, and moves in the vertical direction by driving the motor 37a.

The third drive means 38 comprises a drive motor 38a, a small diameter gear 38b, and a large diameter gear 38c. The motor 38a is provided below the elevating member 33, and a small-diameter gear 38b is provided at an end of a drive shaft of the motor 38a. The large-diameter gear 38c is provided at the end of the rotating shaft 34 so as to be integrally rotatable, and meshes with the small-diameter gear 38b. The large-diameter gear 38c has a substantially semicircular shape, and rotates forward and backward substantially 180 degrees by the forward / reverse rotation of the motor 38a, thereby reversing the arms 34a and 34b in the vertical direction.

Among the driving means 36 to 38, the first driving means 36 rotates the support base 32 forward and backward by approximately 180 degrees. The projecting directions of the engagement rods 35a and 35b are set to the support base 25 side and the conveyor Selectively change to the belt C side.
The second driving means 37 moves the elevating member 33 in the vertical direction.
1, the position shown by the solid line in FIG. 1 is the bottom dead center, and the position shown by the two-dot chain line in FIG. 1 is the top dead center. Further, the third driving means 3
In 8, the arms 34a and 34b are rotated in the forward and reverse directions by approximately 180 degrees from the horizontal state, and are turned upside down and returned.

In the take-out device 30 configured as described above, for example, the engaging rod 35a protrudes toward the support 25, and the engaging rod 35b protrudes toward the conveyor belt C. In this state, after the compression molding is completed in the press molding device 20, the tip of the support 25 is actuated by the hydraulic cylinder 27 while the lower mold 12 and the lower mold 13 integrated with the lower mold 12 are placed on the movable platform 26. The engagement rod 35a is fitted into each of the engagement holes 13a of the lower mold base 13 to hold the lower mold 12 and the lower mold base 13. When the second motor 37a is driven in this state, the engagement rod 35
The lower die base 13 and the lower die 12 integrated with the lower base 12 on the movable base 26 engaged with and held by the first motor 36a are moved upward by a predetermined amount, and are rotated 180 degrees by the driving of the first motor 36a to rotate the conveyor belt C.
It moves upward, moves down by driving of the second motor 37a, and reverses in the vertical direction by driving of the third motor 38a. When the second motor 37a is driven in this inverted state to move the lower mold base 13 and the lower mold 12 integrated therewith, the molded product A in the lower mold 12 is taken out onto the conveyor belt C.

Thereafter, the lower mold base 13 and the lower mold 12 integral therewith are turned upside down by driving the third motor 38a, and are moved downward by driving the second motor 37a. In this state, the lower mold 12 is open upward, and the lower mold 12 accommodates the waste land B which is a raw material for molding. In this state, the other engagement rod 35b protrudes toward the support table 25 and moves to the tip of the support table 25 while being placed on the movable table 26 after the completion of compression molding by the press molding apparatus 20. Mold base 13 and lower mold 12 integral therewith
Hold.

Accordingly, in this state, the lower mold 12 and the lower mold base 13 integrated with the lower mold 12 which are held by one of the engagement rods 35a and accommodate the wasteland B, and the other engagement rod 35b
The lower die 12 and the lower die base 13 integrated with the lower die 12 held by the second motor 37a are moved upward by the driving of the second motor 37a, and are moved in the horizontal direction by the driving of the third motor 38a.
Rotated 80 degrees. As a result, the lower mold 12 containing the waste land B and the lower mold stand 13 integrated therewith are located on the moving table 26 on the support stand 25, and the lower mold 12
And the lower mold stand 13 is located on the conveyor belt C.

In this state, if the elevating member 33 is lowered by driving the second motor 37a, the lower mold 12 accommodating the wasteland B and the lower mold base 13 integrated therewith are moved to the movable platform 26.
The lower mold 12 and the lower mold stand 1 which are placed on the
3 is a press forming apparatus 2 which is operated by the hydraulic cylinder 27.
It is transported to the 0 side. On the other hand, the lower mold 12 containing the molded product A
The lower mold base 13 is turned upside down by driving the third motor 38a, and the molded product A in the lower mold 12 is taken out on the conveyor belt C.

As described above, if the unloading device 30 is employed, the molding die 10 without the core die can be used, and the lower die 12 is in sliding contact with the inner peripheral surface 12a which is the molding surface of the same die. There is no mold, no gap is generated due to wear of the molding surface, and there is no possibility that a part of the waste land B, which is a raw material of the molded product A, enters the gap at the time of molding. Therefore, no burrs are generated on the molded product A, and the occurrence of wear damage on the molded surface is prevented. Also, early damage to the molding surface of the molding die 10 is prevented. Further, if the unloading device 30 is employed, the molded product A in the lower die 12 unloaded from the press molding device 20 can be automatically extracted and transported, and the work of the molded product A from the lower die 12 can be performed. No removal work is required by the operator.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a take-out device according to an embodiment of the present invention.

FIG. 2 is a partially longitudinal front view of the take-out device.

FIG. 3 is a cross-sectional plan view of the unloading device taken along the line 3-3 in FIG. 2;

FIG. 4 is a process diagram of press molding showing an arrangement state of the unloading device.

FIG. 5 is a vertical sectional front view showing a support table and a moving table included in the press forming apparatus.

FIG. 6 is a vertical sectional front view of a lower die of a molding die used when the take-out device is employed and a lower die stand integrated with the lower die.

FIG. 7 is a vertical sectional front view of a lower mold of a conventional molding die and a lower mold stand integrated with the lower mold.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Mold, 11 ... Upper mold, 12 ... Lower mold, 13 ... Lower mold stand, 13a ... Engagement hole, 20 ... Press molding apparatus, 25 ... Support stand, 26 ... Moving stand, 30 ... Extraction apparatus, 31 ... Machine stand, 3
2. Support base, 33 lifting member, 34a, 34b arm, 35a, 35b engaging rod, 36 ... first drive means, 37 ... second drive means, 38 ... third drive means.

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B28B 13/06 B28B 3/02 B28B 7/00 B30B 15/32

Claims (1)

(57) [Scope of request for utility model registration] 1. A support table rotatably supported on a machine base in a horizontal direction, an elevating member mounted on the support table so as to be vertically movable, and rotatably supported by the elevating member. An engagement rod provided on an arm fixed to the rotating shaft, protruding sideways and engaging with a lower mold of the press-molding mold to hold the lower mold;
First driving means for rotating the support base in a horizontal direction;
A second driving unit for raising and lowering the elevating member; and a third driving unit for rotating the rotating shaft to invert the lower die held by the engagement rod in a vertical direction. An apparatus for taking out a molded product from a press mold, wherein the molded product is taken out of the lower mold by being turned upside down.