JPH0263044B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a demolding mechanism for a molded product in a foam mold for molding cushion bodies such as seats.

BACKGROUND ART FIG. 3 shows a conventional foam molding mold, which is a mold 23 for foam molding such as a cushion body for a seat, in which an upper mold 22 is hinged (not shown) to a lower mold 21 so as to be freely openable and closable. When demolding a molded product using the mold 23, since the molded product 24 remains in the lower mold 21 after the mold is opened, there is no space for inserting a fingertip to take it out, making the work troublesome and inefficient, and a large force is required for demolding. It takes. In the figure, reference numeral 25 denotes an insert frame placed on a support plate 26 erected on the lower die 21. Reference numeral 27 is fixed to the frame 25 with a bracket 28 of the insert 28.

Problems to be Solved by the Invention The object of the present invention is to improve productivity by efficiently demolding a molded article formed using a foam mold.

Means for solving the problem There is a foaming mold in which the upper mold is hinged to the lower mold so that it can be opened and closed freely, and the mold release mechanism for the foam molded product installed in the mold is a mechanism part A and a mechanism part A that can be attached and detached thereto. A mechanism part B is molded integrally with the molded product, and the mechanism part A has a middle mold with a nest, which is in contact with the lower mold surface when closed, hinged to the side opposite to the hinge of the upper mold surface. In addition, a holding metal fitting for a frame to be inserted into the molded product is fixed to the hinge side, and a arm metal fitting for removably inserting and positioning the insert is fixed to the opposite side of the frame in the mechanism part B. It's in the configuration.

Function: The molded product integral with mechanism part B of the demolding mechanism, which is foam-molded in the mold and is in the engaged and retained state, is hinged to the middle mold via the mechanism part B when the upper mold is opened. At the same time, the frame of mechanism part B is affected by the weight of the molded product and the mold release resistance force at the time of mold release, shakes off the holding force of the holding fittings, and is also released from the upper mold. However, when the upper mold is opened, the molded product integrated with the mechanism part B, which has become upright, loses its hinge support with the middle mold and separates.

EXAMPLE The demolding mechanism of the molded product in the foam mold of the present invention will be described in detail with reference to illustrative drawings.

FIG. 1 is a cross-sectional view of the invention and an explanatory diagram of its operation.
FIG. 2 is a perspective view.

In the figure, 1 is a demolding mechanism, 5 is a foam mold, 6 is a foam molded product, 8 is a medium mold, 10 is a frame, 11 is a holding metal fitting, and 12 is a bracket metal fitting.

In FIGS. 1 and 2, a foam mold 5 has an upper mold 3 screwed onto a lower mold 2 with a hinge 4 so as to be openable and closable, and a demolding mechanism 1 for a foam molded product 6 disposed in the mold 5. teeth,
It consists of a mechanism part A and a mechanism part B which is detachably attached to the mechanism part A and molded integrally with the molded article 6. The mechanism part A
A middle mold 8 with an insert 7 that contacts the lower mold surface 2a when the upper mold 3 is closed is hinged to the side opposite to the hinge of the mold surface 3a, and the mold A holding fitting 11 that holds the frame 10 inserted into the object 6 with a holding force that is substantially less than the weight of the molded object 6.
is fixed. The mechanism part B includes the frame 1
An arm bracket 12 into which the insert 7 is removably inserted and positioned is fixed to the opposite side of the hinge 0. Nesting child 7 is
It consists of a head 7a and an insertion part 7b that is inserted into and removed from the insertion hole 12a of the metal fitting 12, and the metal fitting 1 is attached to the insertion side of the head 7a.
A stepped portion 7c is provided which abuts against and positions 2.
The demolding mechanism 1 of the present invention has a mechanical part A by inserting the insertion part 7b of the insert 7 into the insertion hole 12a of the arm bracket 12.
The mechanism part B is hingedly supported on the frame 1.
The hinge side of 0 is removably engaged and held by a holding fitting 11. The holding force of the metal fitting 11 is
It can be determined in consideration of the weight of the molded product 6, the resistance force when releasing the mold, etc. The middle mold 8 is hinged so that it can be opened outward from the mold when the mold is opened.

In order to demold a molded product using the demolding mechanism of the present invention, the molded product 6, which is integral with the mechanical part B of the demolding mechanism 1 that is foam-molded in the mold 5 and is in an engaged and retained state, is removed from the mold of the upper mold. When the mold is opened (indicated by a two-dot chain line), the mold is released from the lower mold 2 while being hingedly supported by the middle mold 8 via the mechanism part B, and the frame 10 of the mechanism part B absorbs the weight of the molded product and the release during the mold release. Under the effect of the mold resistance force, the holding force of the holding fitting 11 is shaken off and the mold is released from the upper mold 3 (as shown by the three-dot chain line), but the mold opening of the upper mold 3 progresses further and it becomes upright (four-pointed). The molded product 6, which has become a molded product (as shown by the chain line), has its mechanism part B separated from the insert 7 of the mechanism part A, and falls over to be demolded. Since the mechanism part B is molded integrally with the molded article 6, the required amount should be prepared in advance.

Effects of the Invention There is a foaming mold in which the upper and lower molds are hinged so that they can be opened and closed freely, and the demolding mechanism for the foam molded product disposed in the mold consists of a mechanism part A and a mechanism part B, and the mechanism part In A, a middle mold with a nest is hinged on the side opposite to the hinge of the upper mold surface, and a holding metal fitting for a frame to be inserted into the molded product is fixed to the hinge side, and the mechanism part B
Since the bracket is fixed on the opposite side of the frame from which the insert is inserted and removed, demolding of the foam molded product is extremely easy and efficient, and the effect of improving productivity is tremendous. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the present invention and is an explanatory diagram of its operation, FIG. 2 is a perspective view, and FIG. 3 is an explanatory diagram of the conventional system. DESCRIPTION OF SYMBOLS 1...Mold removal mechanism, 5...Foaming mold, 8...Medium size, 10...Frame, 11...Holding metal fitting, 12
...Archive metal fittings.

Claims (1)

[Claims] 1. There is a foam molding mold in which the upper mold is hinged to the lower mold so that the upper mold can be opened and closed freely, and the mold removal mechanism for the foam molded product provided in the mold is attached to the mechanical part A and is removably connected to the molded product. It consists of a mechanism part B that is integrally molded, and the mechanism part A has a middle mold with a nest that is in contact with the lower mold surface when closed, hinged on the side opposite to the hinge of the upper mold surface, and has the molded object on the hinge side. A holding metal fitting is fixed to the frame to be inserted into the frame so as to be removable with a holding force that is substantially less than the weight of the molded product. It has a configuration in which the arm bracket for positioning is fixed, and the insertion part of the child is inserted into the insertion hole of the arm bracket, and the mechanism part B is hingedly supported on the mechanism part A, and the hinge side of the frame is held by the holding bracket. A demolding mechanism for a molded product in a foam mold, characterized by engaging and holding in a removable manner.