JP2910887B2 - Method and device for removing molded article - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for automatically removing a molded product after mold press molding.

[0002]

2. Description of the Related Art For example, as shown in FIG. 10, a method for removing a molded product formed by mold press molding is as follows. Numeral 3 pushes up the molded product by about 100 mm, and the worker takes out the pushed-up molded product 4 manually. Normally, as shown in FIG. 11, two workers are used to shorten the molding time.

When the removal of the molded article 4 is completed,
At the same time as the safety shutter 5 is lowered, the skin material input device 6 on which the skin material 6a is placed is moved to the upper mold 1 in the upper position.
Slides downward, and the skin material input device 6 rises,
After the skin material 6a is set on the set pin 1a of the upper mold 1, and the skin material charging device 6 is retracted, the molding upper mold 1 descends,
The upper and lower molding dies 1 and 2 are engaged with each other, the cavity is filled with resin, and a molded product 4 formed by mold press molding integrally with the skin material 6a is molded. It is the fact that it is taken out from.

[0004]

As described above, conventionally, the molded product 4 after the mold press molding is manually removed from the molding die 2 by an operator, so that the removal time of the molded product becomes irregular. In addition, the operation cannot be duplicated with other equipment, so that it is difficult to shorten the time and there is a problem in safety.

Further, in order to shorten the molding time, the molded product 4 is actually taken out by two workers.
There was also room for improvement in terms of labor saving.

[0006] The present invention has been made in view of such circumstances, and an object of the present invention is to be able to regularly remove molded articles formed by press molding.
It is an object of the present invention to provide a method and an apparatus for removing a molded product which can reduce the variation of the molding cycle, shorten the molding cycle, and contribute to labor saving.

[0007]

In order to achieve the above object, a method for removing a molded product according to the present invention is to provide a method for removing a molded product by an ejector pin provided on a lower molding die after mold press molding. While being pushed upward from the mold, the slide member is inserted between the mold surface of the lower mold for molding and the back surface of the molded product, and is rotatably mounted on the distal end side of the slide member so as to be rotatable. By rotating the rotating plate upward , the molded product is held in an inclined shape by the rotating plate, and the molded product is moved along the rotating plate.
In this manner, the material is naturally dropped to the near side, and the mold is released from the mold.

[0008] Further, the apparatus for taking out a molded product according to the present invention comprises:
A molded product take-out device that is attached to a mold press molding device consisting of an upper and lower mold for mold press molding and a skin material charging machine for introducing a skin material between the upper and lower dies, and removes the molded product after mold press molding. In this case, the ejecting device for ejecting a molded product upward from a lower die
And down, after the operation of the ejector pin, a slide member for advancing and retracting so as to enter between the molded article back surface and the mold surface of the lower mold for molding, pivotally mounted on the distal end side of the slide member, the pivot A rotating plate that holds the molded product in an inclined shape by operation and allows the molded product to fall naturally , and one end is located at the end of the slide member.
And the other end is fixed to the open end of the rotating plate.
And a rotating cylinder for rotating the rotating plate by the expansion and contraction operation.
And characterized by the following.

[0009] Further, the molded product take-out apparatus according to the present invention comprises:
A molded product take-out device that is attached to a mold press molding device consisting of an upper and lower mold for mold press molding and a skin material charging machine for introducing a skin material between the upper and lower dies, and removes the molded product after mold press molding. In the above, the molded product take-out device is provided inside a lower mold for molding, and is elevated to a portion near the back surface of the molded product, and is rotatable to one end side of the elevated member.
The molded product is held in an inclined shape by pivoting
And a rotating plate that allows the molded product to fall naturally, and an elevating member at one end.
When it is fixed to the rotation support part side of the rotation plate from the center of
In addition, the other end is fixed near the open end from the center of the rotating plate,
A rotating cylinder for rotating a rotating plate by an expansion and contraction operation .

[0010] The molded article may be dropped secondarily by a scraper installed on the front edge side of the skin material charging machine.

[0011]

As is apparent from the above arrangement, the method for removing a molded product according to the present invention is a method for removing a molded product pushed upward by an ejector pin from a rotating plate which is rotatably attached to the tip end of a slide member. the is rotated upward, the rotary plate moldings
In held in inclined, because is that is naturally dropped, the operator need only take out the molded article dropped in extraction position.

Further, the apparatus for taking out a molded product according to the present invention comprises:
A slide member that moves forward and backward or moves up and down, or a lift member, and rotates with respect to the slide member and the lift member
Mountable to hold molded products in an inclined shape and fall naturally
Rotating plate and silicon for rotation for rotating operating the rotary plate to cause
And the operation of the take-out device can be performed in an overlapping manner with the operation of the skin material input device and the like, and the molding cycle can be shortened.

Furthermore, if a scraper is installed on the leading edge side of the skin material charging machine, the scraper presses the rear edge of the molded product by the sliding operation of the skin material charging machine, thereby complementing the natural fall of the molded product. can do.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a method and an apparatus for removing a molded product according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a plan view of a molding die showing an installation position of a molded product removing apparatus according to the present invention, FIG. 2 is a side view for explaining a schematic configuration of the molded product removing apparatus according to the present invention, and FIGS. 6 is a side view showing a method for removing a molded product according to the present invention, and FIGS. 7 to 9 are a plan view and a cross-sectional view of a molding die showing another embodiment of a device for removing a molded product according to the present invention. .

First, the configuration of a take-out device used in the method of taking out a molded product according to the present invention will be described.

In FIG. 1 and FIG. 2, first, a mold press forming apparatus is configured to be movable up and down with a lower mold 10 for mold press forming, and to be engaged with the lower mold 10 for mold press forming. The upper mold 20 is roughly composed of a molding upper mold 20 and a skin material charging machine 30 for charging a skin material into the mold when the mold press molding upper and lower molds 10 and 20 are opened.

More specifically, in this embodiment, two cavities 11 are formed on the mold surface of the lower mold 10 for mold press molding in order to obtain two molded products.
Ejector pins 12 for projecting a molded product are provided at a plurality of locations on the lower mold 10 for mold press molding.

The feature of the present invention is to provide a device for removing a molded product having a simple structure attached to the mold press forming die 10. In this embodiment, two molded products are taken. , Three take-out devices 40 are arranged as shown in FIG.

This take-out device 40 is, as shown in FIG.
The forward / backward cylinder 41 such as an air cylinder installed outside the mold press forming lower mold 10 and the operation of the forward / backward cylinder 41 cause the mold press forming lower mold 1 to move.
The rotating plate 43 of the sliding member 42 that moves forward and backward with respect to 0 and the rotating plate 43 that is rotatably attached to the distal end portion of the sliding member 42 via the pivot pin 44 is rotated. A rotary cylinder 45 such as an air cylinder is roughly configured.

Next, the operation of the take-out device 40 having the above-described configuration will be described with reference to FIGS.

First, when the mold press molding is completed,
The upper mold press molding die 20 is raised to the uppermost position, and the ejector pins 12 installed on the lower mold press molding die 10 are raised by about 100 mm, and the molded product 50 is pushed up from the lower die 10. (Fig. 3
reference).

At this time, the unloading device 40 is located outside the lower mold 10 for mold press molding.

Then, at the same time as the molded product 50 is lifted by the ejector pins 12, the advance / retreat cylinder 41 of the take-out device 40 is operated, and the slide member 42 slides in the direction of the arrow, and moves forward to the position shown in FIG. I do.

Next, when the slide member 42 reaches a predetermined position, the rotation cylinder 45 is operated, the piston rod 46 connected to the piston in the rotation cylinder 45 is extended, and the rotation plate 43 is pivotally supported. It turns in the direction of the arrow around the pin 44 and stops at an angle of about 45 °, and the turning operation of the turning plate 43 causes the molded product 50 to be inclined as shown in FIG. It falls naturally into the shooter 60.

At this time, the skin material charging device 30 on which the skin material 51 is set is slid to move to a position below the upper mold 20 for mold press molding at the highest azimuth value.
At this time, as shown in FIG. 6, a scraper 31 attached to the front edge side of the skin material charging machine 30 is provided.
If the molded product 50 does not fall, the scraper 31 presses the trailing edge of the molded product 50, and the molded product 5
In this configuration, the extraction of 0 is complemented by the scraper 31.

Then, during the operation of the skin material inputting machine 30, each of the take-out devices 40 causes the rotating plate 43 to return to the horizontal state by the operation of the rotating cylinder 45, and the driving cylinder 41
The slide member 42 retreats by the operation of, retreats to the outside of the lower mold 10 for mold press molding, and returns to the position shown in FIG.

Then, after the skin material inputting machine 30 is lifted and the skin material 51 is set on the set pin 21 of the upper mold 20,
After the skin material charging machine 30 is retracted, the next press molding starts.

During this molding cycle, the safety shutter 61 is not opened and closed, and only one worker needs to take out the molded product 50 from the shooter 60 with the safety shutter 61 fixed.

As described above, according to the method of the present invention, after the mold press molding, the molded product 50 is lifted upward by the ejector pins 12, and thereafter, the unloading device 40 moves the back surface of the molded product 50 and the mold surface of the lower mold 10. And the rotating plate 43
Is rotated to drop the molded product 50 naturally into the shooter 60. Therefore, since the operation time of the removal device 40 is predetermined, the removal time of the molded product 50 is regularly controlled, and the molding cycle is controlled. In addition, since the variation of the cycle time is eliminated and the operation of the unloading device 40 and the operation of the skin material input device 30 can be overlapped, the molding cycle time can be shortened and the productivity can be greatly improved. is there.

Further, two workers were conventionally required,
Only the operation of removing the molded product 50 from the shooter 60, and comparing the cycle time between the conventional method and the method of the present invention,
Conventionally 1.66 minutes / set (single work), 1.58 minutes /
The method of the present invention is set (1.31 work).
Min / set (one-person operation), and a reduction of 0.35 minutes per molding cycle is possible.

In a state where the safety shutter 61 is closed, the operator only needs to take out the molded product 50 from the shooter 60, which is good in terms of safety.

The take-out device 4 attached to the molding die 10
In the above-described embodiment, three sets of unloading devices are set in the case of two pieces of the molded article 50 in the above-described embodiment. However, taking the mold release of the molded article 50 into consideration, as shown in FIGS. Various variations may be given to the installation of the device 40.

FIG. 7 shows a case for taking out a single molded product 50, and two take-out devices 40 are installed so as to be located on both sides of the molded product 50.

The operation of the take-out device 40 is the same as in the first embodiment, and will not be described here.

FIG. 8 shows a case of taking two molded products 50 as in the first embodiment.
The arrangement of the four extraction devices 40 in order to dispose the extraction devices 40 on both sides of 0 is particularly preferable when the shape of the molded article 50 is complicated and mold release is difficult.

Further, as shown in FIG. 9, the take-out device 40 may be set on the lower mold 10 for mold press molding. In the case of this embodiment, an elevating member 47 is attached to the rotating plate 43 instead of the slide member 42, and an up / down operation cylinder 48 for vertically moving the elevating member 47 is provided in the lower die 10 for press molding. It is installed in.

In the case of this embodiment, the slide member 4
Since the elevating member 47 that moves up and down is installed instead of 2, there are advantages that the moving part is small, the reliability in terms of accuracy is high, and the price of the unloading device 40 can be reduced.

[0039]

As described above, according to the present invention, the following special effects can be obtained.

(1) The method for removing a molded article according to the present invention is as follows.
With the molded product after mold press molding pushed up by the ejector pin, the rotating plate of the unloading device is inserted into the back of the molded product, and the rotating plate is rotated to move the molded product from the mold by its own weight. Since the mold is released by natural fall, it is extremely easy to remove the molded product from the take-out position such as a shooter, and the time required for removing the molded product varies as in the past. In addition, there is an effect that the molded product can be easily and efficiently taken out.

(2) Since the operation of another device can be performed simultaneously with the operation of the unloading device that naturally drops the molded product, the molding cycle can be shortened and the productivity can be improved. Have.

(3) Even when two molded products are set, one operator only needs to remove the molded product from the take-out position of the shooter or the like. Compared with the case where the molded article is directly removed from the mold, an accident and the like can be prevented beforehand, and there are effects such as favorable safety.

[Brief description of the drawings]

FIG. 1 is a plan view of a molding die showing an installation position of a molded product removal device according to the present invention.

FIG. 2 is a side view showing a schematic configuration of a molded product removal apparatus according to the present invention.

FIG. 3 is an explanatory view showing one step of the method of the present invention and showing a state in which a molded article is pushed up.

FIG. 4 is an explanatory view showing one step of the method of the present invention and showing a sliding operation of the take-out device.

FIG. 5 is an explanatory view showing one step of the method of the present invention and showing a rotating operation of the take-out device.

FIG. 6 is an explanatory view showing one step of the method of the present invention and showing a rotating operation of the take-out device and a sliding operation of the skin material input device.

FIG. 7 is a plan view of a molding die showing another embodiment of the molded product unloading device according to the present invention.

FIG. 8 is a plan view of a molding die showing still another embodiment of the molded product unloading device according to the present invention.

FIG. 9 is a cross-sectional view showing a configuration of another embodiment of the molded product removal apparatus according to the present invention.

FIG. 10 is a side view showing a conventional removal operation of a molded product.

FIG. 11 is a plan view showing a conventional method for removing a molded product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lower mold for mold press molding 11 Cavity 12 Ejector pin 20 Upper mold for mold press molding 21 Set pin 30 Skin material charging machine 31 Scraper 40 Extraction device 41 Cylinder for advance / retreat 42 Slide member 43 Rotating plate 44 Shaft support pin 45 Rotation Cylinder 46 Piston rod 47 Lifting member 48 Vertical movement cylinder 50 Molded product 51 Skin material 60 Shooter 61 Safety shutter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-108521 (JP, A) Jikken Sho 45-30623 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) B29C 43 / 50,33 / 44 B29C 51 / 44,45 / 40

Claims (4)

(57) [Claims] After the mold press molding, a lower mold (1) is formed.
The molded product (50) is pushed upward from the lower molding die (10) by the ejector pins (12) provided in the molding die (0), and the mold surface of the lower molding die (10) and the back surface of the molded product (50). And a sliding member (42) is inserted between the sliding member (42) and a rotating plate (43) rotatably mounted on the distal end side of the sliding member (42) and rotatably mounted thereon, thereby being rotated upward. (50) is held in an inclined manner by a rotating plate (43),
A method for taking out a molded product, wherein the molded product is naturally dropped along the rotating plate (43) to the near side to remove the molded product from the molding die (10). 2. An upper and lower mold (10, 2) for mold press molding.
0) and a skin material (51) between the upper and lower molds (10, 20).
And a skin material charging device (30) for charging the mold, and a molded product removing device for removing the molded product (50) after the mold press molding. Molded product (50) into lower mold (10)
Ejector pin (12) that pushes upward from the
After the operation of the ejector pin (12), the slide member (42) which advances and retreats so as to enter between the mold surface of the lower molding die (10) and the back surface of the molded product (50), and the slide member (42).
A pivoting plate (43) that is rotatably mounted on the tip side of the device, holds the molded product (50) in an inclined shape by a pivoting operation, and allows the molded product (50) to fall naturally , and one end of the slide member (4).
2), and the other end is connected to the rotating plate (4).
3) is fixed to the open end side, and the rotating plate (4
And (3) a rotating cylinder (45) for rotating the molded product. 3. An upper and lower mold (10, 2) for mold press molding.
0) and a skin material (51) between the upper and lower molds (10, 20).
And a skin material charging device (30) for charging the mold, and a molded product removing device for removing the molded product (50) after the mold press molding. An elevating member (47) which is housed in the lower mold (10) and rises to a portion near the back surface of the molded product (50), and is rotatable around one end of the elevating member (47).
The molded product (50) is tilted by the rotation operation
Held in Jo, a rotary plate (43) to the molded article (50) to fall naturally, the rotating plate from the center of one end of the lifting member (47)
(43) is fixed to the rotation support portion side, and other
The end is fixed near the open end from the center of the rotating plate, and expands and contracts
Rotating cylinder for rotating the rotating plate (43)
(45) An apparatus for removing a molded product, comprising: 4. A scraper (31) attached to the front edge side of the skin material input device (30) and for pressing the inclined molded product (50) forward by a sliding operation of the skin material input device (30). 4. The apparatus for removing a molded product according to claim 2, wherein