JPH0634081Y2 - Equipment for measuring and supplying raw materials such as cement mortar molded products - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a raw material metering and supplying device for concrete products, roof tiles such as cement mortar molded products, floor boards and other building materials, cement mortar molded products and the like.

[Conventional technology]

Conventionally, an improved raw material metering / supplying device for measuring and supplying concrete products, roof tiles such as cement mortar molded products, cement mortar molded products of floorboards and other building materials from the raw material supply holes of the raw material container to the molding device. As an example, the invention of Japanese Patent Application No. 63-114896 has been filed.

According to the invention of this application, as shown in FIG. 6, a raw material container A containing raw materials such as concrete and cement and having a raw material supply hole B on a bottom plate, and the raw material supply hole B located below the raw material container A. Bottom plate D having a drop hole C to the forming device, which is horizontally separated from the bottom plate, and the raw material supply hole B on the bottom plate D.
And a weighing / feeding device G having a weighing compartment F that reciprocates by a drive source such as a hydraulic cylinder E, and disconnects the communication between the inside of the raw material container A and the weighing compartment F before the weighing operation. It is the structure constituted by the breaking device H that operates.

Then, regardless of whether the mortar as the raw material is high or low, the raw material is moved back and forth in the weighing section F including, for example, a mixture of the raw material with acrylic fiber, glass fiber, carbon fiber, metal fiber or a mixture thereof. By dropping the raw material from the supply hole B into the measuring compartment F and performing the scraping operation, the fiber is surely scraped to reliably prevent the fiber from being pulled back to the raw material container A and the reverse flow of the raw material. In order to prevent the generation of the raw material and prevent the back flow of the raw material due to the pressure when the raw material having a low viscosity is moved in the measuring section F, the raw material is surely measured without a measurement error, and then the raw material is moved to the upper part of the molding device. It was supplied through the dropping hole C by dropping it into the molding apparatus.

However, in this raw material and weighing division device,
Since the moving distance L of the movement of the raw material from the measuring position K to the dropping position R in the dropping hole C with respect to the molding apparatus is long, the friction distance with the support plate I for supporting the measuring section F in a reciprocating manner is large. There is an inconvenience that the length is inevitably lengthened and the wear of the measuring section F progresses, or the raw material measured by the measuring section F leaks before reaching the drop hole C.

Therefore, the present invention has been made to solve the above-mentioned point. By reducing the moving distance from the weighing position to the falling position of the weighing compartment, wear of the weighing compartment is reduced, and the raw material after weighing is An object of the present invention is to make it possible to reliably measure a constant amount of a raw material with little leakage and eliminate a measurement error, and to supply the raw material as a whole according to the size of the molding apparatus.

[Means for Solving the Problems]

The present invention has been made in view of the above point, and a raw material container having a raw material supply hole on the bottom surface, and a drop hole to a molding device which is located below the raw material container and is horizontally separated from the raw material supply hole. A bottom plate having a meter, a metering / feeding device having a metering section on the bottom plate that reciprocates between the raw material supply hole and the drop hole, and the inside of the raw material container and the metering device before the metering operation. A raw material metering and feeding device for cement mortar molded articles, etc., which is provided with a shutoff device for shutting off the communication of compartments, and a scraping means for slidably moving the raw material feed hole is provided in the raw material container, Provided is one cylinder as the same driving source that reciprocates the feed device and the upper plate and the bottom plate from the measuring position of the raw material to the dropping position with respect to the forming device, and the bottom plate to which the tips of the cylinders and rods are joined In the opening Was openably form another cylinder adopts the means of connecting to a cylinder rod of the cylinder.

[Action]

First, the bottom plate closes the bottom of the opening in the metering compartment by extending the cylinder rod of the third cylinder.

The metering / feeding device is vertically aligned with the raw material supply hole of the raw material container, the raw material in the raw material container is supplied into the raw material supply hole,
Then, the blocking plate of the metering / feeding device closes the metering section by driving the first cylinder to block the communication with the raw material supply hole.

After that, the second cylinder is driven so that the metering / feeding device closes the opening of the metering section, and moves forward from the metering position to the dropping position together with the bottom plate that prevents the raw material after the metering from dropping. .

Then, the third cylinder is driven to shrink the bottom plate, and the raw material after the measurement is supplied from the drop hole of the bottom plate which is aligned with the weighing section.

〔Example〕

The present invention will be described below with reference to an embodiment shown in FIGS.

Reference numeral 1 denotes a raw material container having a substantially circular plane, and a raw material supply hole 2 is provided at one position on the bottom surface of the raw material container 1. The raw material supply hole 2 is formed as a strip-shaped opening in accordance with the mold forming space in consideration of the viscosity of the raw material. Reference numeral 3 denotes a raw material drop hole 4 provided at a certain distance in the horizontal direction from the raw material supply hole 2.
It is a bottom plate having. The drop hole 4 may be provided directly above the molding die, or another raw material supply section may be provided between the dropping hole 4 and the molding die. On the bottom plate 3, there is provided a metering / feeding device 6 which is slidable by a first hydraulic cylinder 5 as a drive source or an air cylinder. This metering / feeding device 6 is provided with a metering partition 7 having a cross section equal to that of the raw material supply hole 2 at the tip through a substantially L-shaped relay mounting plate 8, and the cylinder rod 5a of the cylinder 5 is It is deeply drawn into the cylinder 5 and is aligned with the raw material supply hole 2 [Fig. 3 (a)], and the cylinder rod 5a is at a fully extended position [Fig. 3 (b)]. The partition 7 is aligned with the drop hole 4 of the bottom plate 3.

A blocking plate supporter 10 for guiding the blocking plate 9 is provided on the upper surface of the weighing / feeding device 6, and the blocking plate supporter 10 is provided with a spacer 13 between an upper plate 11 and a lower plate 12. The whole is supported by a machine frame that supports the bottom plate 3 and the raw material container 1.
The upper plate 11, the lower plate 12, and the spacer 13 are provided with openings or opening portions that are vertically aligned with the measuring compartment 7 and the raw material supply hole 2 of the raw material container 1. Further, the spacer 13 is provided with a space adjacent to the opening portion and in which the blocking plate 9 is guided, integrally with the opening portion, and the spacer 13 surrounds the space.
Sandwiched between.

The upper surface of the barrier plate supporter 10 for supporting the barrier plate 9 may be provided so as to be in direct contact with the raw material supply hole 2 of the raw material container 1, but as shown in the figure, the raw material supply hole 2 of the raw material container 1 and the barrier plate are provided. It is also possible to provide between the corresponding aperture plates of the support 10 a supply connection 15 provided such that its aperture 15a is aligned. The space of the supply connection portion 15 serves as a reserve compartment for the weighing compartment portion 7, and it is possible to reasonably increase the metering and feeding speeds.

When the metering compartment 7 is vertically aligned with the raw material supply hole 2 of the raw material container 1 by the second hydraulic cylinder 16 or the air cylinder, the shut-off plate 9 shuts off the retracted position and the retracted position for communicating them. It can be reciprocated between the forward position.

Reference numeral 17 denotes a rotary blade that is slidably and rotatably provided in the raw material container 1 with respect to the bottom surface 1a thereof and serves as a scraping means. The rotary blade 17 is located at a substantially symmetrical center of the rotary shaft 18. Two blades are provided by a connecting rod 19, and the rotary blade 17 slidably rotates in the raw material supply hole 2 to perform a scraping operation so that the raw material contained in the raw material container 1 can be removed from the raw material supply hole 2 through the raw material supply hole 2. It is designed to drop to the supply connection part 15.

Reference numeral 20 denotes a third cylinder as a drive source for individually driving the bottom plate 3 with respect to the weighing / feeding device 6, and the rear end of the cylinder 20 is fixed to the relay mounting plate 8. In the bottom plate 3, the cylinder rod 5a of the cylinder 5 expands and contracts so as to be integrated with the measuring / feeding device 8 from a measuring position K as a raw material supply hole alignment position by the measuring / feeding device 6 to a dropping position R with respect to the forming device. Cylinder / Rod
It is possible to move a desired distance along with the moving stroke of 5a. In addition, the moving speed of the cylinder 20 for opening and closing the bottom plate 3 is different from the moving speed of the cylinder 5 for moving the measuring / feeding device 6 from the raw material measuring position K to the dropping position R, for example, approximately the same. By setting the moving speed to 1/2 and setting the movement start timing of the cylinder 20 and starting the driving while the feeding device 6 is moving from the measuring position K to the dropping position R, after the measurement, It is also possible to drop the raw material according to the case where the mold area of the molding apparatus is large and to supply it as a whole. In the above-described embodiment, the raw material supply hole 2 which is below the raw material supply hole 2 of the raw material container 1 as the shutoff device is shown as the shutoff plate 9 which shuts off the supply passage of the metering compartment 7. It is not necessary to be on the lower side, but in the raw material container 1, for example, the rotor blade 17 is configured to close the raw material supply hole 2, the scraping operation is finished, and the weighing operation of the weighing section 7 is started (that is, the movement is started). The function of the circuit breaker is to stop or stop without stopping until the time). In short, when the metering section 7 performs the metering operation, if the communication with the inside of the raw material container 1 via the raw material supply hole 2 is interrupted in some way, the backflow of the raw material can be prevented to some extent.

One embodiment of the present invention is constructed as described above, and its operation will be described with respect to the measurement and supply of the raw material. First, in the position shown in FIG.
Vertically aligned with each other, and the cylinder 16 contracts to be in the retracted position so that they are in communication with each other. The space of the connecting portion 15 is filled.

At this time, a strip-shaped raw material supply port 2 is provided on the bottom surface 1a of the raw material container 1, and a rotary shaft 18 is provided for the raw material supply port 2.
Since the rotary blades 17 rotate about the bottom surface 1a while sliding on the bottom surface 1a, the raw material is subjected to a cutting operation to vertically align the raw material supply hole 2 with the cut-off plate support 10 communicating with each other, that is, a supply connection. The opening 15a of the portion 15, the upper plate 11, the lower plate 12,
The spacer 13 and the opening of the weighing compartment 7 can be reliably pushed into the raw material container 1 without any backflow or void.
Be sure to prevent weighing errors. Acrylic fiber as the raw material,
When glass fiber, carbon fiber, metal fiber or a mixture thereof is mixed, the rotary blade 17 is provided with the raw material supply hole 2
It is useful for surely scraping the fibers by means of abrasion to prevent the fibers from being pulled back into the raw material container 1, the reverse flow of the raw material, and the generation of voids, and to perform accurate weighing without error.

From this position, first, when the shut-off plate 9 moves forward by the operation of the cylinder 16 of the first hydraulic pressure and reaches the position of FIG. 3 (a), the measuring compartment 7 is closed, and the raw material supply hole 2 of the raw material container 1 is connected. Communication is hindered. Next, the second hydraulic cylinder 5 is operated to advance the metering / feeding device 6 integrally with the bottom plate 3 (see FIG. 3 (b)).

At this time, the metering section 7 of the metering / feeding device 6 is closed by the bottom plate 3 due to the extension of the cylinder rod 20a of the hydraulic cylinder 20, and is indicated by an arrow a toward the forming device. Moved as shown. In this way, when the measuring section 7 is moved from the measuring position K as the supply hole alignment position to the dropping position R by driving the hydraulic cylinder 5 and stops, the cylinder rod 5a of the cylinder 5 at the raw material dropping position R is stopped. Cylinder rod of other hydraulic cylinder 20 connected to relay via relay mounting plate 8
The bottom plate 3 moves due to the contraction of 20a, and the weighing compartment 7
The opening hole at the bottom surface of the base plate is aligned with the drop hole 4 of the bottom plate 3 and opened, and the raw material weighed by the weighing section 7 is accurately dropped at the dropping position R by gravity and supplied to the molding die or the die of the molding apparatus. To be done.

In this way, the movement distance of the bottom plate 3 which is moved by the drive of the cylinder 20 with respect to the weighing compartment 7 is moved at the raw material dropping position R, so that the movement distance can be shortened and the raw material is dropped after the weighing. In addition, the work for opening and closing the weighing compartment 7 can be performed quickly and reliably, the work can be performed efficiently, and wear of the weighing compartment 7 is prevented, and reliable weighing without weighing error can be performed. Moreover, the moving speed of the cylinder 20 for opening and closing the bottom plate 3 is different from the moving speed of the cylinder 5 for moving the measuring / feeding device 6 from the measuring position K to the dropping position R, for example, about 1/2.
And the starting time of the raw material is started while the feeding device 6 is moving from the measuring position K to the falling position R and the cylinder 20 is driven to expand the mold area of the molding device for the raw material after measuring. Or, if it is long, it can be dropped according to its width and spread almost entirely.

When the supply of one time is completed, the cylinder of hydraulic cylinder 20
After the rod 20a extends to close the drop hole 4 of the bottom plate 3,
When the cylinder rod 5a of the hydraulic cylinder 5 contracts, the weighing section 7 moves together with the bottom plate 3 to the weighing position K and returns to the old position. Thereafter, when the cylinder rod 16a of the hydraulic cylinder 16 contracts, the blocking plate 9 moves to the retracted position and returns, and the metering compartment 7 is opened to completely communicate with the inside of the raw material container 1. In this way, one measurement and supply cycle is completed.

Note that the blocking plate 9 does not necessarily have to stay at the blocking position until the weighing section 7 makes one complete reciprocation.

As long as the weighing / feeding device 6 has an upper surface that is in contact with the lower plate 12 of the blocking plate support 10 around the communicating opening hole regardless of its movement, the opening of the lower plate 12 of the blocking plate support 10 is always opened. Even if the upper surface is closed and the blocking plate 9 starts retreating at the same time, the raw material descending into the space is supported by the upper surface of the metering / feeding device 6. In this case, as shown in the drawing, if the vertical dimension of the entire opening of the blocking plate support 10 is at least the same as the vertical dimension of the weighing compartment 7, the supply connection 15 is omitted. Also, the above-mentioned reserve section is provided.

Further, the front end of the blocking plate 9 has a lower surface inclined to the right (backward) downward from the upper edge, and it is conceivable that the fibers contained in the raw material may be cut by the upper edge of the front end. To push the raw material downward,
It only reduces the tendency of the raw material in the lower part to return to the upper part.

4 and 5 show a second embodiment of the present invention, in which a plurality of raw material supply holes 2 are provided in the raw material container 1.
A plurality of supply connection portions 15 provided on the bottom surface 1a of the raw material container 1 at predetermined intervals and corresponding to these raw material supply holes 2 on the bottom surface of the raw material container 1, and a plurality of openings provided on the upper plate 11. Hole and hydraulic cylinder to open and close this opening
A plurality of shut-off plates 9 driven by 16, a plurality of metering compartments 7 provided in the metering feeder 6 reciprocated by the same hydraulic cylinder 5, and a reciprocating cylinder 20 of the same hydraulic pressure. And a plurality of drop holes 4 provided in the bottom plate 3 are provided. By reciprocating the metering and feeding device 6 integrally with the bottom plate 3, a plurality of bottom holes 1a of one raw material container 1 are provided. The raw materials dropped by the metering and feeding holes 2 are simultaneously weighed in a plurality of weighing compartments 7, and the raw materials are simultaneously dropped and fed from the plurality of dropping holes 4 of the bottom plate 3 to the respective molding devices.

In the above embodiment, the cylinders 5, 16 and 20 are hydraulic cylinders, but needless to say, air cylinders may be used.

[Effect of device]

As described above, according to the present invention, the metering and feeding device and the bottom plate are integrally moved by one cylinder as the same driving source until the material is weighed and then dropped to the molding device. The moving distance from the weighing position to the material drop position due to is shortened. Therefore, the wear of the metering section can be reduced as compared with the conventional case, and the leakage of the raw material after the measurement is eliminated, and the measurement error is eliminated, and a certain amount of the raw material can be reliably supplied to the molding apparatus. Moreover, after the weighing / feeding device and the bottom plate having the drop hole are integrally moved to the dropping position after the raw materials are weighed, another bottom cylinder is driven by another individual cylinder connected to the above-mentioned cylinder. Since the moving distance for opening and closing the raw material becomes extremely short, the work for dropping the raw material after the weighing can be performed quickly and reliably, and the work can be performed efficiently. Moreover, since the structure is such that the cylinder for driving the bottom plate is connected to the piston / rod of the cylinder for driving the weighing section of the weighing / feeding device, the moving speed and the movement start time of each cylinder are made different. By combining them, the raw material can be supplied almost entirely according to the size of the mold area of the molding apparatus.

[Brief description of drawings]

FIG. 1 is a plan view showing a raw material / feeding device showing the first embodiment of FIG. 1, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIGS. c) is an enlarged partial view of FIG. 2 showing a process chart, FIG. 4 is a plan view showing a second embodiment of the present invention, FIG. 5 is its sectional view, and FIG. It is sectional drawing which shows an example of a supply apparatus. 1 ... Raw material container, 2 ... Raw material supply hole, 3 ... Bottom plate, 4 ...
… Drop hole, 5 …… Cylinder, 6 …… Weighing / feeding device, 7
…… Weighing division, 8 …… Relay mounting plate, 9 …… Blocking plate, 10
…… Blocking plate support, 11 …… Upper plate, 12 …… Lower plate, 13 …… Spacer, 15 …… Supply connection, 16 …… Cylinder, 20 ……
Cylinder.

Claims (3)

[Scope of utility model registration request] 1. A raw material container having a raw material supply hole on the bottom surface, a bottom plate having a dropping hole to a forming device which is located below the raw material container and is horizontally separated from the raw material supply hole, and on the bottom plate. And a metering / feeding device having a metering partition that reciprocates between the raw material supply hole and the drop hole, and a blocking device that shuts off communication between the inside of the raw material container and the metering partition before the metering operation. A raw material supply device for cement mortar molded articles, etc., which is provided with a scraping means for slidably moving the raw material supply hole in the raw material container, and the measuring / feeding device and the upper plate are used for measuring the raw material. One cylinder serving as the same drive source that reciprocates from the position to the dropping position with respect to the molding apparatus is provided, and another cylinder that allows the bottom plate to which the tip of the cylinder rod is connected to be opened and closed with respect to the opening of the measuring compartment is Siri above Cement mortar molded articles of the material metering apparatus, characterized in that connected to Da of the cylinder rod. 2. A plurality of said raw material supply holes are provided at predetermined intervals on the bottom surface of said raw material container, said bottom plate is provided with said dropping holes so as to be able to communicate with said raw material container, and said measuring / feeding device is provided with a plurality of holes. The raw material metering device for cement mortar molded articles according to claim 1, further comprising: a plurality of shutoff devices for providing a measuring compartment portion and for blocking communication between the measuring compartment portion and the inside of the raw material container. Supply device. 3. One end of a cylinder as a drive source for driving the raw material compartment is fixed to a machine frame that supports the raw material container, and the bottom plate is above the metering compartment to provide the raw material supply hole and the metering. The raw material metering / supplying device for a cement mortar molded article or the like according to claim 1, further comprising a blocking plate for blocking communication with the partition section.