JPS5932477Y2 - Pressure pressure detection device for pressure molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressurizing force detecting device for a pressurizing molding machine of equipment for molding, for example, a molded article.

For example, in the pressure molding of powdered materials, whether or not the molded product is being produced with stable quality is determined by monitoring the pressure molding force and understanding the operating conditions. Detecting and maintaining accurate pressure molding force is important.

Conventionally, this type of detection mechanism has a fixed roll sandwiched in the housing of a molding machine, a fixed bearing box at both ends, and a movable roll sandwiched between movable bearing boxes at both ends.
A worm and a worm foil are provided at one end of the movable bearing box, and a pressure detector is provided between the fixed bearing box and the housing, and this pressure sensor detects the pressure forming force acting between both rolls, or A fixed-side roll is sandwiched in the housing and a fixed bearing box is installed at both ends of the housing, a movable-side roll is sandwiched and a movable bearing box is installed at both ends of the housing, and a hydraulic cylinder is provided at one end of the movable bearing box to secure it to the movable bearing box. It is known that a liner and a pressure detector are installed between the bearing boxes, and a calculation circuit is used to reduce the reaction force acting between the movable roll and the fixed roll from the reduction blade of the hydraulic cylinder and detect the pressure forming force. ing.

However, in the former method, when a roll reaction force is received due to the biting of the molded material between both rolls, the reaction force is mechanically restrained, so the roll chock reduction device, - Since it is directly transmitted to the uzing, etc., it has the disadvantage that when a foreign object gets caught between the two rolls, abnormal roll reaction force is transmitted, and an impact force that is difficult to predict is generated, resulting in excessive mechanical damage. It needs to be strong, and while the latter has the advantage of being able to absorb the impactful roll reaction force with a hydraulic cylinder, it has the disadvantage of requiring a complex calculation circuit.

Therefore, in view of the above-mentioned drawbacks, the present invention aims to provide a mechanism that can absorb impactive roll pressure while also detecting pressure forming force extremely easily without using a complicated arithmetic circuit. It is.

Embodiments of the present invention will be described below with reference to the drawings.

1 is a housing.

The housing 1 has a pair of buttons, and is provided with a bearing box (to be described later), a roll installed through the bearing box, a hydraulic cylinder for moving one of the bearing boxes, a pressure detector, a liner, etc. .

2 is a movable bearing box.

The movable bearing boxes 2 are each housed in the housing 1, and are controlled by the hydraulic cylinder 3.
It is set up so that it can be moved freely inside.

4 is a fixed bearing box.

The fixed bearing boxes 4 are each fixedly installed inside the cylinder 1, and 5 is a pressure detector.

This pressure detector 5 is connected to the fixed bearing box 4 and the Ujifugu 1.
It is internally installed at an appropriate position between Q and detects the pressure molding force F when the pressure molded product is bitten.

6 is a movable side roll provided between the movable bearing boxes 2;
I is a fixed side roll provided between the fixed bearing boxes 4.

On the other hand, the vertical width of the window of the cylinder 1 is different between the fitting part of the fixed bearing box 4 and the fitting part of the movable bearing box 2. It is formed.

When the movable bearing box 2 is pressed toward the fixed bearing box 4 by the hydraulic cylinder 3, the movable bearing box 2 is locked at the cylinder step 8, and the movable roll 6 and the fixed roll 7 come into direct contact. There isn't.

A liner 9 is used to appropriately adjust the gap between the movable roll 6 and the fixed roll 7.

Therefore, since the pressing force from the hydraulic cylinder 3 does not directly act on the fixed roll 7, the pressure detector 5
Therefore, only the pressure forming force Fp acting between the rolls can be detected.

The liner 9 is intended to arbitrarily set the clearance between the movable roll 6 and the fixed roll 70, and is bolted to the cylinder 10 and the cylinder step 8, as shown in FIG. .

In this example, the liner 9 is provided between the housing 10, the cylinder step 8, and the movable bearing box 2, but when the movable bearing box 2 is locked at the heurang step 8,
Both rolls, that is, the movable roll 6 and the fixed roll I
If the gap is wide open, to adjust the gap between both rolls, insert the liner 9 between the cylinder 1 and the pressure detector 5, or between the fixed bearing box 4 and the pressure detector 50.
The roll gap is adjusted by appropriately adjusting the position of the fixed roll I.

The operation of the present invention will be explained below.

First, a liner 9 set to a predetermined thickness (clearance between both rolls) is attached to the cylinder stepped portion 8, the hydraulic cylinder 3 is driven by a drive source (not shown), and the movable bearing box 2 is moved to the fixed bearing box 4 side. When pressed with a constant force, the movable bearing box 2 is stopped by the cylinder step part 8 provided in the cylinder 1 via the liner 9, and the movable U-roll 6
No force acts between the rolls 1 and the fixed rolls 1, and a constant clearance is maintained.

After that, when the pressure molded product is inserted, the movable regular roll 6
and the force generated between the fixed roll 1, that is, the pressure forming force F
p is detected by the pressure detector 5.

As described above, according to the present invention, the pressure forming force Fp between the movable side roll 6 and the fixed side roll 7 can be easily detected, and monitoring of the pressure forming force Fp can be grasped, so that extremely stable quality can be achieved. Even if something is obtained and an abnormal impact force is generated due to a droplet, a foreign object, etc., the impact force is absorbed by the hydraulic cylinder 3.

In addition, since the reduction blade Fc of the hydraulic cylinder 3 does not directly act on the fixed bearing 4, the pressure forming force Fp is directly detected by the pressure detector 5, so a complicated calculation circuit is not required. It has extremely excellent effects, such as easy maintenance and extremely simple use.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the present invention, FIG. 2 is a schematic side view of the same, and FIG. 3 is a diagram showing how the housing step portion and the liner are attached to the cylinder. 1: Cylinder, 2: Movable bearing box, 3: Hydraulic cylinder, 4: Fixed bearing box, 5: Pressure detector, 6: Movable roll, 7: Fixed roll, 8: Cylinder step, 9 Ni liner Fc: reduction blade, Fp: pressure forming force.

Claims (1)

[Scope of utility model registration request] A pressure detector is installed between the fixed bearing box and the housing for a pressure molding machine in which a roll supported by a fixed bearing box and a roll supported by a bearing box movable by a hydraulic cylinder are respectively housed in a housing. A pressure molding machine, further comprising: a housing stepped portion for restraining the movement of the movable bearing box so that the rolls do not come into contact with the housing between the movable bearing box and the fixed bearing box. Pressure force detection device.