JPH0217861Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a take-out device for taking out a foamed urethane molded product etc. that has been foam-molded in a mold.

Conventionally, the work of removing a foam molded product from a mold has been carried out directly or by using only a few simple tools. For this reason, work efficiency is low, and in some cases, the molded product does not release and is difficult to take out, so there has been a demand for the development of a device for removing the molded product.

In view of the above, the purpose of this invention is to provide an apparatus for efficiently taking out molded products.

The gist of this invention is to send compressed air to the cylinder to activate the piston, open the extrusion valve attached to the piston, and the opening movement of the extrusion valve presses the foam molded product in the mold and causes the valve to open. The compressed air thus pumped is forced into the space between the mold and the foamed molded product and released from the mold.

The structure of this invention will be explained below with reference to the illustrated embodiment. In Figures 1 and 2, a cylinder 2 to which a cylinder head 1 is fixed is provided with a bottomed cylindrical part 3 that is integrally and concentrically connected by a bottom part 3a. A tapered valve seat 4 is formed. The cylinder head 1 is provided with a first air inlet 1a that can selectively communicate with a compressed air source (not shown) and the outside air, and a first air inlet 1a is provided in the cylinder head 1 so as to penetrate through the cylinder head 1, the cylinder 2, and the bottom 3a. A second air inlet 1b is provided which can selectively communicate with the air source and the outside air.
A piston 5 is fitted into the cylinder 2, and a piston rod 6 of the piston 5 has a smaller diameter than the piston 5 and penetrates the bottom portion 3a in a slidable and airtight manner. A communication hole 7 formed in the piston 5 and the piston rod 6 is formed to allow communication between the cylinder head 1 side of the cylinder 2 and the inside of the cylindrical portion 3.
A conical push valve 8 is formed to correspond to the valve seat 4, and a valve stem 9 connected to the push valve 8 is screwed onto the tip of the piston rod 6.
The female thread of the piston rod 6 has a slightly smaller diameter than the male thread of the valve stem 9 and is provided with a slotted part 6a, so that when the extrusion valve 8 is slightly adjusted and the piston 5 comes into contact with the cylinder head 1. The extrusion valve 8 is in contact with the valve seat 4, and is formed so that this state does not change after adjustment. A pin portion 10 is provided on the piston 5 in a protruding manner, and a hole 11 corresponding to the pin portion 10 is bored in the bottom portion 3a to prevent the piston 5 from rotating.

Next, the manner of use of the device of this invention will be described. The cylindrical part 3 is inserted into an insertion hole drilled in a mold (not shown) so that its tip is aligned with the inner surface of the cavity of the mold, and the foaming process is carried out with the extrusion valve 8 closed. Next, it is separated from the other side (upper mold or lower mold) not shown, and compressed air is supplied from the first air injection port 1a, and the second
The air inlet 1b communicates with the outside air. Then, the piston 5 is pushed, and the extrusion valve 8 is also pushed together with the piston rod 6 and valve stem 9, and the extrusion valve 8 is separated from the valve seat 4. In this state, compressed air flows from the cylinder 2 to the communication hole 7 and to the cylindrical section 3. to the cylindrical part 3
gushes from the tip. It works like this,
The foam molded product is first pressed by the end face of the extrusion valve 8 and is locally released from the mold, and then the air that is pumped is forced into the boundary between the molded product and the mold cavity, and the molded product is released from the mold. and then taken out. After taking out the molded product, the first air inlet 1a is communicated with the outside air, compressed air is sent to the second air inlet 1b, and the piston 5 is returned to its original position to complete the work of taking out the molded product.

According to this invention, as described above, the piston is actuated by compressed air, the extrusion valve integrated with the piston presses the molded product in the cavity, and the compressed air passes through the extrusion valve to produce the molded product. Since it is configured to be press-fitted into the boundary between the mold cavity and the mold cavity, the removal operation can be carried out efficiently, and even molded products that are difficult to take out can be easily taken out.

In addition, it is not necessarily necessary to supply compressed air to the second air inlet in the above-described embodiment, and it is sufficient to just communicate with the outside air. In this case, the return of the piston, extrusion valve, etc. can also be carried out by means such as pressing the extrusion valve.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of this invention, and FIG. 2 is a perspective view showing the piston rod 6, valve stem 9, and extrusion valve 8 in FIG. 2... Cylinder, 3... Cylindrical part, 4... Valve seat,
5... Piston, 6... Piston rod, 7...
Communication hole, 8...extrusion valve.

Claims (1)

[Scope of utility model registration request] A bottomed cylindrical part 3 having a valve seat 4 at the tip is concentrically connected to one side of the cylinder 2, and the other side of the cylinder 2 is formed so as to be able to communicate with a compressed air source, and is fitted into the cylinder 2. Piston rod 6 of piston 5
has a smaller diameter than the piston 5 and penetrates the bottom 3a of the cylindrical portion 3 airtightly and slidably, and a communication hole 7 is bored through the piston 5 and the piston rod 6 to communicate the compressed air source with the inside of the cylindrical portion 3. A device for taking out a molded product, characterized in that an extrusion valve 8 corresponding to the valve seat 4 is attached to the tip of the piston rod 6.