JPS5920990Y2 - Molding machine mold separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold separation device for a molding machine for pressure molding rubber or synthetic rubber.

Conventionally, it is known that after pressure molding is performed using a pressure molding machine, the molds are separated by pushing up an upper mold board using a presser.

However, since conventional pressers are simply reciprocated in the vertical direction using a hydraulic piston device, etc., they not only have to move the presser a large distance to completely open the upper mold, but also have to move quickly. There are inconveniences such as the length is constant and it takes time to push it open.

The purpose of the present invention is to obtain a device free of such inconveniences, in which two or more mold plates 1, 1... are mutually supported pivotally at one side end so that they can be opened and closed. After pressure molding is performed using the mold 2, the lower end of the mold platen 1 located above is pressed by a presser 3 to separate it from the mold plate 1 located below. and the lifting member 4
The upper end of the lever 5 is rotatably supported in the middle thereof, and the upper end of the lever 5 is brought into contact with the lower surface of the mold plate 1, and the lower end thereof is brought into contact with a cam 7 fixed to the machine frame 8. The cam 7 causes the lever 5 to rise as the elevating member 4 moves upward.

What is shown in the figure is a cart B that moves along the arrangement direction in which a plurality of pressure molding machines A are arranged, and a mold separation device C is provided on the cart B. In this embodiment, upper and lower Each of the mold plates 1a and lb is a mold in which a middle plate IC is further provided between the mold plates 1a and lb.

What is separated into 1C is shown.

In the illustrated mold, vertically elongated holes 10 are provided in two pairs of rising pieces 9 that protrude from the upper surface of one side of the lower mold 1b, and inside the holes 10 are inserted both sides of the first side end of the middle mold board 1C and the upper mold board 1a. so that the mold plates 1a, 1c can be opened around each shaft 11 by engaging the shafts 11 protruding from the mold plates 1a, 1c, and so that the mold plates 1a, lb, and IC do not separate from each other or shift their positions. establish.

Below, the mold separation device C for separating the molds 2 will be explained according to the drawings.
a, and wedge-shaped lifting members 4a, 4b constituting the pressers 3a, 3b for the medium-sized board 1C are provided, and the lifting members 4a, 4b are provided.
is connected to a hydraulic device 12 provided on the lower surface of the machine frame 8 to move it up and down, and the lever 5 is swingably provided with an intermediate portion pivoted on each elevating member 4a, 4b. A trochanter 13.13 is provided at the top of the lever 5, and the trochanter 13 above the lever 5
a, 1c, and the lower trochanter 13 is brought into contact with the triangular cam 7 provided on the machine frame 8, and thus the elevating member 4
As the levers a and 4b move upward, the lever 5 is made to rise gradually.

Reference numeral 14 denotes a holding member for the medium-sized board 1C, which is connected to the lifting member 4b for pushing up the medium-sized board 1C and is provided so as to move up and down together with the lifting member 4b. A hook piece 14a for supporting the upper surface of the medium board 1C is provided at the upper end thereof, and a trochanter 15 is provided at the lower end, and the trochanter 15 is provided with a cam groove 16a provided in the machine frame 8 and bent in the left-right direction. It is engaged with the grooved cam 16, so that when the elevating member 4 moves upward, the hook piece 14a retreats from the upper surface of the medium-sized plate 1C.

Next, the operation of this device will be explained with respect to forming an oil seal device.

When pressure vulcanization molding is completed by pressure vulcanization molding machine A,
The cart B is automatically or manually moved to the front of the pressure vulcanization molding machine A.

Next, the mold 2 is sent out onto the cart B by a transfer device provided in the molding machine A.

When operating the hydraulic device 12 in this state to move the lifting member 4a for the upper die board 1a upward, the upper edge of the middle die board 1C is held down by the pressing member 14, so that only the upper die board 1a is moved upward by the presser 4a. When the shaft 11 has been pushed up by a certain distance, the shaft 11 comes into contact with the upper edge of the elongated hole 10 (FIG. 9a).

When the elevating member 4a is further moved upward from this state, the upper mold plate 1a opens in a V-shape centering on the upper end of the elongated hole 10.

(Figure 9b). Next, when the elevating member 4b is moved upward, the hook portion 14a of the presser member 14 is guided by the cam groove 16a and retreats from above the medium-sized plate 1C, as shown in FIG.
Further, when the elevating member 4 is moved upward, the medium board 1C is pushed up by the lever 5 on the elevating member 4b and rotates around the shaft 11,
The middle plate 1C also opens in a V-shape with respect to the lower plate 1b.

(FIG. 9C) In this state, the knockout jig J is manually inserted between the lower mold board 1b and the middle mold board 1C.

(FIG. 9d) Next, when moving the presser 3b of the medium-sized plate 1C downward, the hook portion 14a of the presser member 14 is guided by the cam groove 16b and faces onto the medium-sized plate 1C. In order to press down this with 1C engaged, press medium plate 1.
In order to press C onto the knockout jig j, the product that will stick to the medium plate 1C is pressed onto the medium plate 1C by the knockout jig j.
extrude from

Next, the presser 3b is moved upward again to open the space between the lower mold board 1b and the middle mold board 1C, and after taking out the knockout jig j, a core material (not shown) such as a metal fitting is inserted into the space, and then again. Move the presser 3b of the medium-sized board 1C downward, and then move the presser 3b of the medium-sized board 1C down.
After putting the rubber fabric on top, the presser 3 of the upper mold board 1a is moved down to close the three mold boards 1a, lb, and IC as shown in the ninth diagram.

In this state, the mold is transferred from the carriage B onto the molding machine A by a transfer device to complete the work.

As described above, according to the present invention, when pressure molding is performed using the mold 2 which is rotatably supported at one end of two or more mold plates and can be opened and closed, the mold plates can be separated. A lever is provided on the upper part of the elevating member to allow the presser to swing freely, and the lever is raised by a cam as the elevating member moves upward. When a large force is required, it is possible to separate the mold plates by pressing a position far from the shaft 11, and then, after separation, the lever gradually rises and presses a position close to the shaft, so that the mold plate can be separated. can be pushed up and separated quickly, and the separation time can be shortened, and the lifting distance of the pusher can be shortened, so that the entire device can be manufactured economically and compactly.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a cut side view, FIG. 2 is a cut front view, FIGS. 3 and 4 are operation diagrams with the upper form plate pushed up, and Figures 5 and 6 are operational diagrams with the upper and middle plates pushed up, Figure 7 is an enlarged side view of the mold, and Figure 8 is a plan view of the molding device in which the present invention is assembled. FIG. 9 is a diagram illustrating the separated state of the mold. 1... Mold board, 2... Molding mold, 3...
... Presser, 4 ... Lifting member, 5 ...
・Reba 7...Cam.

Claims (1)

[Scope of utility model registration request] After pressure forming is performed using a mold that can be freely opened and closed by supporting two or more mold plates at one end thereof, the lower end of the upper mold plate is pressed with a presser to form the lower mold plate. In a device that is separated from the presser, a lever is provided on the upper part of the lifting member constituting the presser, the intermediate part of which is pivotably supported, and the upper end of the lever is brought into contact with the lower surface of the mold plate. A mold separation device for a molding machine, the lower end of which is brought into contact with a cam fixed to a machine frame, and the cam causes a lever to rise as an elevating member moves upward.