JPH02502A - Material supplying device for compression molding machine - Google Patents

Abstract

PURPOSE:To facilitate the alteration of a measured value by vertically moving a measuring plate at a part for forming a measuring unit and to improve a measuring accuracy and a supplying speed by providing a boxlike hopper, a material supply the mounted above in the hopper and a specific measuring unit provided under the hopper. CONSTITUTION:A material fed to a material supply tube 30 is dropped from outlets 31a, 31b on an upper measuring plate 27 in a state that the shutters 38, 41 and a feeder shutter 57 of a measuring unit 24 are closed. Then, when the shutter 38 is operated to open a measuring port 36, the material in the bottom of a hopper 23 flows to a measuring chamber 40 through a measuring tube 37 and a measuring cylinder 39. When the shutter 38 is then closed to cut the material in the port, a predetermined quantity of the material is measured between the shutters 38 and 41. The alternation of the measuring of the material can be facilitated by moving a lower measuring plate 35 together with a supporting member 34 upward or downward to increase or decrease the volume of the chamber 40.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for supplying powdered material to a mold of a compression molding machine.

(Prior Art) As schematically shown in FIGS. 5 and 6, a conventional device of this kind is equipped with a feeder 2 reciprocably movable under a box-shaped hopper section 1. 2 is provided with a measuring cylinder 3. This measuring section 3 includes a tube body 3a protruding from the lower side of the feeder plate 2a, and a metering tube 3b fitted with this tube body 3a.
, a shutter 30 that opens and closes the opening of the metering tube 3b, and a seat 1i3d that supports the shutter and the metering tube. It is attached to the feeder plate 2a.

The total amount of material G is obtained by scraping off excess material from the upper surface of the feeder plate 2a by the lower edge of the hopper as the feeder 2 moves forward, and the meter hanging part 3 further moves forward together with the feeder 2. Fixed mold 4a and rotating mold! X! ! 4b
Shutter 3C by cylinder 5
When the cavity is opened, 14 paddy grains are supplied to the cavity.

(Problems to be Solved by the Invention) In such a supply Vt system, when feeding materials, it is necessary to move the feeder with I9 that is integrated with the measuring section, and furthermore, (because measurement is performed by bitter cutter) When the feeder is moved at high speed, variations occur in the total R, which affects the orientation of the material in the cavity.

In addition, adjustment of the total n value due to changes in molds or molding conditions is performed by first stopping the molding process and then using each total td adjustment screw. It is difficult to measure, and there are problems such as the volume at each measurement tends to be incorrect, and it takes time to obtain accurate measurement values.

This invention was devised to solve the above conventional problems, and its purpose is to make it possible to easily change the measured value by vertically moving a part of the measuring plate that constitutes the measuring section. It is an object of the present invention to provide a new material supplying device that has high efficiency (9) and can also improve the supply speed.

(Means for Solving the Problems) The features of the present invention for the above-mentioned purpose include a box-shaped hopper section supported on a machine base, a material supply pipe installed in the upper part of the hopper section, and a material supply pipe installed in the lower part of the hopper. The weighing section consists of an upper item n plate attached to the bottom of the hopper section and a supporting member 14 provided on the hopper section so as to be vertically adjustable. It consists of a lower meter H1 plate provided below the upper measuring plate, and the upper measuring plate has the required number of 81 ports that open at the bottom of the hopper part, and each measuring port protrudes downward from the bottom of each measuring port. It has a plurality of measuring tubes and a freely openable upper shutter interposed between a total of one port and the measuring tubes, and the upper measuring plate is rotatably fitted to the measuring tubes to form a metering chamber. It has a required number of upward-facing cylinders, a discharge port opening at the bottom of each cylinder, and a slidable lower shutter interposed between the cylinders and the discharge ports. 'C.

(Function) In the above configuration, if the position of the support member provided on the hopper section is lowered, the lower meter will be lowered. The position of the plate is also lowered, and the volume of the metering chamber due to the fitted metering tube and metering tube becomes larger.

On the other hand, if you raise the position, the ¥y product of the measurement chamber becomes smaller, and the change in volume adjusts the amount of material.

Further, after the weighing port is blocked by the upper shutter and the weighing is performed, the upper shutter prevents the supply of excess material and keeps the weight constant.

(Example) 11 in the figure is the mold clamping mechanism of a compression molding machine, and the upper fixed plate 12
A fixed mold 13 having the required number of core molds is installed,
An 0I mold 16 is attached to the lower moldable plate 15 connected to the mold clamping ram 14 to the right of the cavity into which the core mold is inserted.

20 is a material supply device arranged on the side of the mold clamping mechanism 11;
It is composed of a box-shaped hopper part 23 carried on a machine stand 22 and a weighing part 2/l attached to the lower side thereof, and a feeder part 50 is located below the weighing part.

As shown in FIGS. 2 and 3, the hopper section 23 includes a rectangular side wall 25 and a holding plate 2 attached to the upper edge of the side wall 25.
6 and an upper measuring plate 27 attached to the lower edge of the side wall, and the holding plate 26 and the upper measuring plate 27 are connected by a rod 28.

Above the center of the interior of the hopper section 23, a bottomed material feed pipe 30, which is equipped with a stick mixer 29 inside and whose upper end is connected to a material transfer hose, is fixed to the center of the holding plate 26. The lower side wall of the material feeding pipe 30 is provided with a lower outlet 31a opening on all sides and an upper outlet 31b opening toward the four corners. Further, on the outside of the upper part of the threaded material supply pipe 30, a horizontal support member 34 made of a plate is attached with a nut 32 so that its vertical position can be adjusted freely, and a small number of rods are fixed at their upper ends to the support member 34. The upper measuring plate 35 is connected to the lower end of the measuring plate 33 and suspended, and is positioned below the upper measuring plate 27.

The measuring tube 24 consists of the upper measuring plate 27 fixed to the hopper side wall 28 to form the bottom of the hopper, and the lower 51 plates 35 located parallel to the lower side thereof.

The upper measuring plate 27 includes an upper plate 27a having the same number of funnel-shaped measuring ports 36 as cavities of the mold, and its ffj ffi.
Lower plate 2 having a downward measuring chamber 37 superimposed on the opening 36
7b are integrally connected via a spacer, and an upper shutter 38 having a required number of openings is slidably interposed between the two plates.

Further, the lower measuring plate 35 is an upper plate 35a having an upward measuring tube 39 that fits into the measuring tube 37 and forms a measuring chamber 40.
and a lower plate 35b having a discharge port 40a opened at the lower side of the ATM chamber 40 are integrally coupled via a spacer, and a lower shutter 41 having a predetermined number of openings is slidably disposed between the two plates. It is a provision.

The feeder part 50 is connected to a weighing hopper together with a feeder block 53 fixed to the upper part by a base member 51 on a machine stand located below the measuring cylinder 24 and guide rods 52 provided on both sides of the upper surface of the base member 51. 23
and a feeder plate 54 that reciprocates between the molds, and the feeder block 55 has the discharge port 40.
A material supply hole 56 located below is drilled. Further, a feeder shutter 57 for opening and closing the outlet of the material supply hole 56 is slidably provided on the lower side of the feeder block 55.

The sliding side of each of the above shutters, the measuring tube 37 and the measuring tube 3
A sealing material (not shown) is applied to the fitting portion 9.

Further, as shown in FIG. 4, air grooves 58 are partially provided, and from the air grooves 58 WJ! Compressed air can be blown into the F1 section and the fitting section.

In the figure, 59 and 60 are air cylinders that drive each shutter, 61 is a screw member for adjusting the height of the feeder base, and 62 is a feed cylinder.

Next, the operation will be explained.

First, with each shutter 38, 41 of the measuring section 27 and the feeder shutter 57 closed, powder or granular material is fed from the material transfer hose to the material supply pipe 30 using compressed air or a screw conveyor. The particles are uniformly dispersed in particle size by the stick mixer 29 and fall from the upper and lower delivery ports 31a and 31b onto the upper measuring plate 27 which also serves as a bottom plate.

Next, when the upper shutter 38 is activated and the measuring port 36 is opened, the material at the bottom of the hopper is metered into the measuring tube 37! ! 1a39 into the metering chamber 40. So upper shutter 3
8 is closed and the material in the metering port is cut, a certain amount of material is measured between the upper and lower shutters 38 and 41.

The measured material falls from the discharge port 40 into the material supply hole 56 of the feeder block 55 when the lower shutter 41 is opened, and at a predetermined timing, the lower shutter 41 closes the discharge port 40 again.

In imitation, when the feed cylinder 62 is actuated to move the feeder block 55 forward above the open movable mold 16 and the feed shutter 57 is opened at that position, the material to be measured in the material supply hole 56 is poured into the cavity. Depressed and supplied. After the supply is completed, the material supply 056 is closed again by the feed shutter 57, and the feeder block 55
is returned to the lower side of the measuring section 24.

Further, the measurement of the material can be easily changed by moving the lower measurement plate 35 upward or downward together with the support member 34 to adjust the volume of the measurement chamber 40. When the position of the support member 34 is lowered by operating the nut 32, the position of the lower measuring plate 35 is also lowered, and the measuring chambers 37 fitted together
The volume of the measuring chamber 40 due to the measuring tube 39 and the measuring tube 39 increases.

Conversely, when the position is raised, the volume of the measuring chamber 40 becomes smaller,
The change in volume adjusts the needle penetration of the material.

(Effects of the Invention) As described above, the present invention includes the white hopper section 23 supported on the machine stand 22, the material supply pipe 30 installed in the upper part of the hopper section, and the measuring device provided below the hopper. Part 2
4, and its total j part consists of an upper measuring plate 27 attached to the bottom of the hopper part 23, and an upper measuring plate suspended from a support member 34 provided on the hopper part so as to be adjustable in position. 27, the feed material can be increased or decreased by 1m by simply adjusting the vertical position of the support member, and the metering adjustment b-
Since it is carried out at a location (a), it does not take much time and adjustments can be made during molding, so there is no need to stop molding for a day unlike in the past.As a result, the setup time during molding, The adjustment time of the supply meeting is greatly shortened, and the productivity is further improved. The plurality of metering tubes 37 that are located in the
At the same time, the F is provided with a movable upper shutter 38 interposed between the fft ff1 port 36 and the metering tube 37.
a required number of upward measuring tubes 39 which are movably fitted to the measuring tube 37 to form a chamber 40;
and a lower metering plate 3 having a discharge port 49a opening on the lower side of each metering chamber 40, and a slidable lower shutter 41 interposed between the three metering tubes and the discharge port 49a.
5, it has the advantage of being able to perform extremely high-accuracy weighing compared to conventional methods, such as by closing the upper and lower shutters to ensure that the metering Φ is carried out and also to prevent the supply of excess material. have

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show one embodiment of a material supply device for a compression molding machine according to the present invention, and FIG. 1 is a front view showing a part of the compression molding machine in longitudinal section, and FIG. is a vertical sectional front view, FIG. 3 is a cross-sectional view of the hopper section, FIG. 4 is a longitudinal sectional view of the 1.13+1 section and part of the feeder, and FIG. 5 is a longitudinal sectional front view of a conventional feeding device.
FIG. 6 is also a longitudinal sectional front view during feeding. 22... Machine base 23... Hopper section 24... Measuring tube 27...
・Upper measuring plate 30... Material feeding pipe 32...
...Natsuto 33...Rod 34.
...Support member 35...Lower meter ffl! 2
38... Upper shutter 39...
Measuring cylinder 40...1...Measuring chamber 40a...Discharge port 41...Lower shutter Fig. 2

Claims (1)

[Claims] It consists of a box-shaped hopper supported on the machine base, a material supply pipe installed above the hopper, and a measuring section installed below the hopper.The measuring section is located at the bottom of the hopper. It consists of an attached upper measuring plate, and a lower measuring plate that is suspended from a supporting member provided on the hopper section and is installed below the upper measuring plate, and the upper measuring plate is attached to the hopper section. has a required number of measuring ports opening at the bottom of the screen, a plurality of measuring tubes protruding downward from the bottom of each measuring port, and a slidable upper shutter interposed between the measuring ports and the measuring tubes. The lower measuring plate has a required number of upwardly facing measuring tubes that are movably fitted with the measuring tubes to form measuring chambers, and a discharge port opening at the bottom of each measuring chamber. A material supply device for a compression molding machine, comprising a slidable lower shutter interposed between a cylinder and a discharge port.