KR102335617B1 - Quantitative supply system for sheet-shaped raw materials - Google Patents

Abstract

Disclosed is a quantitative supply system for sheet-type raw materials. The quantitative supply system for sheet-type raw materials according to the present invention, as a quantitative supply system which supplies raw materials that are pre-processed in a sheet form and continuously provided to a mixer at a set quantity, comprises: a transfer unit for transferring the raw materials in the direction of the mixer; a weight measuring unit for measuring the weight of the raw materials transferred from the transfer unit and transferring the raw materials in the direction of the mixer; a cutting unit installed on one side of the weight measuring unit to perform a cutting operation on the raw materials when the raw materials reach a set quantity in conjunction with the weight measuring unit; and a control unit for receiving information measured while being electrically connected to the transfer unit, the weight measuring unit, and the cutting unit to control each operation. According to the present invention, provided is the weight measuring unit for transferring the raw materials in the direction of the mixer of a refining process while measuring the weight of the raw materials in the form of a sheet drawn out from a raw material pile, a winding roll, or the like, and continuously delivered through the transfer unit in real time. When the raw materials reach the set quantity, the cutting unit is installed to interlock with the weight measuring unit to perform the cutting operation on the raw materials. Therefore, automation can be implemented to replace the conventional operator's repeated cutting operation, and thus, a reduction in labor costs and accidents can be expected.

Description

QUANTITATIVE SUPPLY SYSTEM FOR SHEET-SHAPED RAW MATERIALS

The present invention relates to a quantitative supply system for a sheet-type raw material, and more particularly, a quantitative supply system for stacking raw materials that are pre-processed in a sheet form and continuously provided for a long time in a zigzag manner, cut them at a set quantity, and supply them to a mixer is about

In general, the tire refining process is a process of mixing various raw materials required for tire manufacturing to form various rubber mixtures used in tires in a sheet form. An appropriate amount of the vulcanizing agent is measured, put into a mixer, and mixed to prepare a rubber mixture.

This sheet-shaped rubber mixture can be individually manufactured into a rubber mixture with desired properties by individually inputting various chemical products according to the characteristics through repeated mixing processes, that is, a continuous refining process.

At this time, the rubber mixture in the form of a sheet is transported and measured in a sheet form so that it can be put into the mixer in the required quantity for each refining process before being mixed with chemicals of various characteristics, and then cut by an operator or a cutting device, and then on the conveyor It is put into the mixer using the etc.

As described above, Korean Patent Laid-Open No. 10-2017-0136030 (published on December 11, 2017) of the prior art that is related to the process step of measuring and cutting the rubber mixture in the form of a sheet is a tire refining process. Disclosed is a technology for a drug metering device.

In the above prior art, as shown in FIG. 1, the vulcanizing agent and rubber are mixed and the plate-shaped sheet vulcanizing agent 7 wound on the let-off 8 with a constant thickness, width and length is carried by the conveyer 9 ), after being transported and dropped, it is stacked on the weighing conveyor 12 on the lower side and measured by a fixed quantity, and then is automatically cut by the cutter 10 .

Due to this prior art, the quantitative input of the sheet vulcanizing agent 7 without a residual amount can be implemented as an automated process rather than a manual operation of the operator, and the input of the sheet vulcanizing agent 7 is uniform, and the equipment configuration Due to the simplification, the problem of equipment failure is reduced, and there is an effect of easy equipment maintenance.

However, as shown in Fig. 1, the sheet gauze 7 is dropped from the end of the conveying conveyor 9 and continuously stacked on the weighing conveyor 12 and weighed, while the cutter 10, which is a cutting device. will perform a cutting operation on one side of the falling section of the sheet gauze (7).

The structure arranged and operated in the above configuration is the load cell 13 before cutting, measured without distinguishing between the sheet gauze 7 in the falling section and the sheet gauze 7 stacked on the weighing conveyor 12. If the sheet gauze 7 in the falling section is configured to be cut at an arbitrary position based on the measured value, a structural problem that causes an error or difference between the measured values of the sheet gauze 7 before and after cutting have.

That is, since the cutting operation of the cutter 10 is performed in the middle of the falling section of the sheet gauze 7 where a predetermined tension and gravity act, the measured value of the sheet gauze 7 after cutting is the sheet gauze before cutting (7) It is possible to generate a larger error (or smaller error) than the measured value, so the quantitative supply of the sheet gauze (7) cannot be done accurately and precisely.

Therefore, it is possible to measure the weight together with continuous transfer of the raw material or rubber mixture in the form of a sheet, and research and development for a transport and quantitative supply system that can automatically perform and set accurate cutting work with a quantity set based on the weight measurement This is a necessary situation.

Republic of Korea Patent Publication No. 10-2017-0136030 (published date: December 11, 2017)

An object of the present invention is that the weight measurement can be performed in real time along with the transfer of the sheet-type raw material continuously provided for the refining process, and the accurate cutting operation of the sheet-type raw material based on the weight measurement can be performed continuously in a compact and narrow space. It is to provide a quantitative supply system for sheet-type raw materials that can be supplied to a mixer.

The above object is a quantitative supply system for supplying a raw material that is pre-processed in a sheet form and continuously provided in a predetermined quantity to a mixer, comprising: a conveying unit for conveying the raw material in the direction of the mixer; a weight measuring unit measuring the weight of the raw material transferred from the conveying unit and transferring the raw material in the direction of the mixer; a cutting unit installed on one side of the weight measurement unit to perform a cutting operation on the raw material when the raw material reaches a set quantity in conjunction with the weight measurement unit; And it is achieved by a quantitative supply system for sheet-type raw material, characterized in that it comprises a control unit for controlling each operation by receiving the information measured in a state electrically connected to the transfer unit, the weight measurement unit and the cutting unit.

The weight measuring unit may include: an upper measuring conveyor that measures the weight of the raw material continuously delivered from the conveying unit in real time, and conveys the raw material in the direction of the mixer so that the raw material falls from the conveying end; and a lower measuring conveyor that measures the weight of the raw material continuously falling and stacked from the upper measuring conveyor in real time, and supplies the cut raw material to the mixer in a quantitative manner.

The control unit calculates weight information by summing the primary measurement value measured by the upper measurement conveyor and the secondary measurement value measured by the lower measurement conveyor, and when the weight information reaches a set quantity, by the cutting unit The operation can be controlled so that the cutting operation is made.

The weight measuring unit may further include a lamination driving unit for reciprocally driving the lower measuring conveyor in the direction of the mixer so that the raw materials dropped from the upper measuring conveyor and stacked are uniformly stacked on the upper surface of the lower measuring conveyor in a zigzag manner. can

The cutting unit is provided between the conveying unit and the upper measuring conveyor,

In order to correct an error between the calculated weight information and the set quantity, a cutting control unit for changing the cutting position of the cutting unit along the feeding direction of the raw material may be included.

Between the lower measuring conveyor and the mixer, a supply unit for supplying the raw material cut in quantity to the mixer arranged at a distance may be further provided.

The another object is to provide a step of conveying the raw material in the direction of the mixer by the conveying unit; a first measuring step of measuring the weight of the raw material transferred from the conveying unit and positioned on the upper part of the upper measuring conveyor and the raw material that is connected thereto and falls while acting as a load on the upper measuring conveyor; a second measuring step of measuring the weight of the raw material that is dropped and stacked on the upper part of the lower measuring conveyor; a determining step of determining whether to cut the raw material by comparing the weight information obtained by adding the first and second measured values measured in the first and second measuring steps with the set quantity of the raw material; a cutting step of performing a cutting operation on the raw material through a cutting unit when the weight information reaches the set amount of the raw material; and a supply step of providing the raw material cut to a quantity to the mixer through a supply unit.

According to the present invention, a weight measuring unit for transferring the raw material in the direction of the mixer of the refining process while measuring the weight of the raw material in the form of a sheet drawn out from a raw material pile or winding roll, etc. and continuously delivered through the transfer unit is provided in real time, and the raw material is set When the fixed quantity is reached, since the cutting unit is installed to interlock with the weight measuring unit to perform the cutting operation on the raw material, automation that replaces the conventional worker's repeated cutting operation can be implemented, thereby reducing labor costs and safety accidents This has the expected effect.

In addition, there is an effect that the sheet-shaped raw material can be continuously provided to the mixer in an accurate quantity while the cutting operation for the sheet-shaped raw material is performed in a compact space rather than a wide space formed long along the transfer line.

1 is a view showing the structure of a drug metering device in a conventional tire refining process.
2A is a view showing the overall configuration and arrangement of a quantitative supply system for a sheet-type raw material according to an embodiment of the present invention.
2B is a block diagram showing a connection relationship of a quantitative supply system for a sheet-type raw material according to an embodiment of the present invention.
3 to 7 are views showing the entire operating state step by step based on FIG. 2A.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

1 is a view showing the structure of a drug metering device in a conventional tire refining process, FIG. 2a is a view showing the overall configuration and arrangement of a quantitative supply system for a sheet-type raw material according to an embodiment of the present invention, and FIG. 2b is this view It is a block diagram showing a connection relationship of a quantitative supply system for a sheet-type raw material according to an embodiment of the present invention, and FIGS. 3 to 7 are views showing the entire operating state step by step based on FIG. 2A.

Top (top), bottom (bottom), left and right (side or lateral), front (front, front), rear (back, back), etc., which refer to directions in the description and claims of the invention, etc. are not used for limiting rights For convenience of explanation, it is determined based on the relative positions between the drawings and the configuration, and the three axes may be rotated to correspond to each other and changed, except where specifically limited otherwise.

The quantitative supply system 100 for a sheet-type raw material according to the present invention is an invention prepared to supply raw materials that are pre-processed in a sheet form and continuously provided to the mixer 10 at a set quantity.

Due to the provision of the quantitative supply system 100 for the sheet-type raw material according to the present invention, the quantitative supply of the sheet-type raw material, which has been done through the repeated cutting operation of a conventional worker, can be automated, and the weight measurement and cutting of the sheet-type raw material While the operation is performed in a compact and narrow space rather than a large space formed long along the transfer line, the raw material in the form of a sheet can be continuously provided to the mixer 10 in an accurate quantity.

In order to implement the above-described functions or actions in detail, the quantitative supply system 100 according to the embodiment of the present invention, as shown in FIGS. 2A and 2B , a transfer unit 110 and a weight measurement unit 120 ), a cutting unit 130 , a control unit 140 , and a supply unit 150 may be included.

Hereinafter, each of the above-described components will be described in detail.

First, the transfer unit 110 spreads the sheet-type raw material, which is the supply object of the present invention, from the raw material pile 20 or the wound winding roll 20' loaded in a zigzag as shown in the figure, and is provided in the present invention for the first time as a component, Due to this, the sheet-like raw material can be transported in the direction of the mixer 10 for a long time.

The transfer unit 110 is not particularly limited, as it is sufficient as long as it is a commercially available various moving means capable of linearly moving the sheet-shaped supply object placed on the upper surface at a constant speed.

However, the transfer unit 110 according to an embodiment of the present invention includes a pulley rotatably provided at both ends for continuous and smooth transfer of a sheet-like raw material formed long in the longitudinal direction, and an annular belt arranged to surround the outer circumferential surface. It can be implemented as a conveyor composed of

The conveying unit 110 implemented as a conveyor in this way is, as shown, the raw material taken out from the pile of raw material 20 or the winding roll 20' and loaded so that it can be stacked while falling to the lower measuring conveyor 124 to be described later, It is installed to be inclined upward, or installed in a horizontal direction at a position higher than the lower measuring conveyor 124, as shown, to move the sheet-type raw material loaded on the upper belt.

At this time, the width of the belt is greater than the width of the sheet-like raw material to be supplied, and the forward and reverse rotation of the pulley and the rotation speed may be made by the control unit 140 to be described later that operates and controls the motor connected to the pulley.

Here, the reason that the sheet-like raw material formed long in the longitudinal direction is dropped and stacked on the lower measuring conveyor 124 to be described later is that the weight measurement and cutting operation of the sheet-like raw material is not a wide space formed long along the transfer line, but a compact narrow space in order to make it happen in Accordingly, the efficiency of system maintenance and the efficient use of the installation space can be promoted.

On the other hand, the supply unit 150 is provided between the lower measuring conveyor 124 and the mixer 10 to be described later in order to supply the raw materials cut in a quantity in a stacked state to the mixer 10 arranged at a distance as described later. As a component to be used, various commercially available moving means capable of linearly moving the raw material (SM) stacked on the upper surface at a constant speed are sufficient, so it is not particularly limited.

However, the supply unit 150 according to the embodiment of the present invention may also be implemented as a conveyor, similarly to the transfer unit 110 described above, and its driving according to the distance between the lower measuring conveyor 124 and the mixer 10 to be described later. The length may be appropriately increased or decreased.

The weighing unit 120 is a component provided to measure the weight of the raw material delivered from the above-described transfer unit 110 and transfer the raw material to the mixer 10 direction, wherein the weight measurement is continuously transferred There is a technical feature of the present invention in that the sheet-like raw material is formed in the upper and lower portions, respectively.

In order to measure and transport the raw material as described above, the weighing unit 120 according to the embodiment of the present invention includes an upper measuring conveyor 122, as shown in FIGS. 2A and 2B, It may be configured to include a lower measuring conveyor 124 and a stacking driving unit 126 .

The upper measuring conveyor 122 is a component that measures the weight of the sheet-like raw material continuously delivered from the transfer unit 110 described above in real time, and transfers the raw material in the direction of the mixer 10 so that the raw material falls from the transfer end.

The upper measuring conveyor 122 is provided to support a conveying means such as the above-described conveyor, which is disposed perpendicular to the direction of gravity as shown, and a lower portion of the conveying means to measure the load applied to the conveying means, that is, the weight. It may be composed of at least one or more load cells LC.

Here, the conveying means and the load cell LC may be inclined, but the reason for disposing to be perpendicular to the gravity direction is to accurately and precisely measure the weight of the sheet-like raw material applied to the conveying means.

The upper measuring conveyor 122 of the above-described configuration and arrangement, as shown in FIGS. 4 to 6, is located on the upper portion of the conveying means and transported as well as the sheet-like raw material that is connected thereto and acts as a load for the conveying means and conveys The weight of the raw material (FM) falling from the means is continuously measured in real time. (Part ①)

At this time, the weight measured in real time by the upper measuring conveyor 122 is, as the raw material FM falling on the lower measuring conveyor 124 to be described later is stacked in a zigzag manner, that is, as the section length of the falling raw material FM becomes shorter, becomes smaller

As described above, the operation control of the transport means constituting the upper measuring conveyor 122 is performed by the control unit 140, and real-time measured weight information (primary measurement value) is transmitted to the control unit 140 to be described later. Likewise, it can be used to determine whether the raw material has reached a set quantity.

And the lower measuring conveyor 124 is a component that measures the weight of the stacked raw materials (SM) continuously falling from the upper measuring conveyor 122 in real time, and supplies the cut raw materials to the mixer 10 by quantity, It may be disposed below the upper measuring conveyor 122 .

The lower measuring conveyor 124 is provided to support the transport means such as the above-described conveyor, which is disposed to be perpendicular to the direction of gravity, and the lower part of the transport means, like the upper specific conveyor described above, and the load applied to the transport means, that is, the weight It may be composed of at least one or more load cells LC that measure .

At this time, the reason for disposing the transfer means and the load cell LC so as to be perpendicular to the direction of gravity is to accurately and precisely measure the weight of the raw material SM stacked on the transfer means.

The lower measuring conveyor 124 of the above-described configuration and arrangement, as shown in FIGS. 4 to 6, is dropped to the upper portion of the conveying means and continuously measures only the weight of the raw material SM stacked in a zigzag in real time. (Part ②)

At this time, the weight measured in real time by the lower measuring conveyor 124 is, the shorter the section length of the raw material (FM) falling from the upper conveyor, that is, the raw material (SM) stacked on the upper surface of the lower measuring conveyor 124 zigzag The more they are stacked, the larger they become.

As described above, operation control of the transport means constituting the lower measuring conveyor 124 is performed by the control unit 140, and real-time measured weight information (secondary measurement) is transmitted to the control unit 140 to be described later. Likewise, it can be used to determine whether the raw material has reached a set quantity.

The stacking driving unit 126 is a component provided so that raw materials (SM) dropped from the upper measuring conveyor 122 and stacked are uniformly stacked on the upper surface of the lower measuring conveyor 124 in a zigzag manner, and the lower measuring conveyor 124 ) can be implemented with various commercially available power transmission devices that can reciprocate in one direction, that is, along the direction of the mixer 10 .

However, as shown in FIGS. 5 and 6 , the stacked driving unit 126 according to the embodiment of the present invention has the same power as the motor M so that the operation can be controlled at an accurate reciprocating distance and speed rather than a quick reciprocating operation. It may be implemented as a driving method in which a ball screw is applied to the device and may be operated and controlled by the controller 140 to be described later.

As described above, due to the double weighing structure composed of the upper and lower measuring conveyors 122 and 124, the weight of the raw material acting as a load of the upper measuring conveyor 122 (Part ①) and the raw material that has been dropped and stacked in a zigzag ( As the weight (② part) of SM) is individually measured in real time in a state of being accurately separated without overlapping with each other, when the raw material is cut at the starting position of the upper measuring conveyor 122 where the weight measurement starts, The sheet-like raw material can be precisely cut with a set quantity.

The cutting unit 130 is installed on one side of the weight measurement unit 120 and interlocks with the weight measurement unit 120 to perform a cutting operation on the raw material when the raw material reaches a set quantity, and the weight measurement unit The operation may be controlled through the control unit 140, which will be described later, after receiving real-time weight information from 120 .

The cutting unit 130 according to an embodiment of the present invention is a linear drive device 132, a cutter 134, a die 136 between the transfer unit 110 and the upper measuring conveyor 122 as shown in FIG. ) and a cutting control unit 138 and the like.

Here, the linear driving device 132 may be implemented as a hydraulic or pneumatic cylinder reciprocating in a linear direction for a quick cutting operation, and may be installed at a right angle to the transport direction of the raw material.

And the cutter 134 coupled to the operating end of the linear drive device 132 precisely cuts one side of the raw material that has started to be weighed in the upper measuring conveyor 122 together with the die 136 disposed to face each other. do.

The cutting control unit 138 is a component provided to correct an error between the weight information of the raw material calculated by the control unit 140 and the set quantity, which will be described later, and is cut along the transport direction of the raw material as shown in FIG. 6 . It may be configured to change the cutting position of the part 130 .

Specifically, the cutting control unit 138 may be implemented in a ball screw method including a nut that is coupled to a screw shaft connected to a motor and the like and reciprocates in a straight line, and may be operated and controlled by the control unit 140 to be described later.

The control unit 140 is a component that receives and processes information measured while being electrically connected to the transfer unit 110, the weight measurement unit 120, and the cutting unit 130, and controls each operation, and includes an MCU ( A micro controller unit), a microcomputer, an Arduino, a programmable logic controller (PLC), etc. may be implemented as an information processing unit in which information operation and processing and sequence control can be modularized by programming.

At this time, a series of processing processes of the control unit 140 for controlling each connected device and processing transmitted and received data are coded in a programming language such as C, C++, JAVA, or machine language that can be read through the above-described information processing unit. will be done

Here, a series of calculations and processing algorithms of the control unit 140 can be easily coded in various ways and forms at the level of those skilled in the art, and detailed descriptions thereof will be omitted.

However, a series of processes of supplying the raw material in sheet form to the mixer 10 in a quantitative manner using the quantitative supply system 100 according to the present invention will be described step by step with reference to FIGS. 3 to 7 .

First, as shown in FIG. 3 , one end of the raw material WM loaded on the raw material pile 20 or the winding roll 20 ′ is drawn out and loaded on the transfer unit 110 , and then the control unit 140 is A providing step of operating and controlling the conveying unit 110 so that the loaded raw materials are conveyed in the direction of the mixer 10 is performed.

Next, as shown in FIG. 4 , the control unit 140 is transferred from the transfer unit 110 and is connected to the raw material located on the upper part of the upper measuring conveyor 122 , and is connected thereto and acts as a load on the upper measuring conveyor 122 . The first measurement step of generating the first measurement value (① part) is performed by measuring the weight of the falling raw material FM in real time through the load cell LC of the upper measuring conveyor 122 .

Next, as shown in FIG. 5 , the control unit 140 measures the weight of the raw material (SM) that has been dropped and stacked on the upper part of the lower measuring conveyor 124 in real time to generate a secondary measurement value (② part). A second measurement step is performed.

With the execution of the second measuring step as described above, the control unit 140 lowers the measuring conveyor so that the raw material SM dropped from the upper measuring conveyor 122 and stacked is uniformly stacked on the upper surface of the lower measuring conveyor 124 in a zigzag manner. The operation control of the stacking driving unit 126 for reciprocating the 124 is performed.

Next, as shown in FIG. 6 , the control unit 140 compares the weight information obtained by summing the 1 and 2 measurement values (①② parts) continuously measured in the first and second measurement steps described above and the quantity of the set raw material to each other. A determination step of determining whether to cut the raw material is performed by comparison.

That is, as described above, the primary measured value (① part) measured in real time by the upper measuring conveyor 122 becomes smaller as the raw material (FM) falling on the lower measuring conveyor 124 is stacked in a zigzag manner, whereas the lower measuring conveyor As the secondary measurement value (part ②) measured in real time at (124) gradually increases, the combined weight of the first and second measurements eventually reaches the set amount of raw material, and at this time, the control unit 140 sends a cutting command to the cutting unit 130. will send

When there is a cutting command from the control unit 140, the cutting unit 130 performs a cutting operation on the raw material at the starting position of the upper measuring conveyor 122 where the weight measurement starts.

Finally, as shown in FIG. 7 , the control unit 140 performs a supply step of operating and controlling the supply unit 150 so that the raw materials cut in a quantity in a stacked state are provided to the mixer 10 .

In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

10: mixer 20, 20': raw material pile, winding roll
WM: Loaded raw material FM: Falling raw material
SM: Laminated raw material
100: Quantitative supply system for sheet-type raw materials
110: transfer unit 120: weight measurement unit
122: upper measuring conveyor 124: lower measuring conveyor
126: stacked driving unit LC: load cell
130: cutting unit 132: linear drive device
134: cutter 136: die
138: cutting control unit 140: control unit
150: supply

Claims (7)

As a quantitative supply system that supplies raw materials that are pre-processed in sheet form and continuously provided to a mixer at a set quantity,
a conveying unit conveying the raw material in the direction of the mixer; a weight measuring unit measuring the weight of the raw material transferred from the conveying unit and conveying the raw material in the direction of the mixer; a cutting unit installed on one side of the weight measurement unit to perform a cutting operation on the raw material when the raw material reaches a set quantity in conjunction with the weight measurement unit; and a control unit configured to receive information measured while being electrically connected to the conveying unit, the weight measuring unit and the cutting unit to control each operation,
The weight measurement unit,
an upper measuring conveyor that measures the weight of the raw material continuously delivered from the transfer unit in real time, and conveys the raw material in the direction of the mixer so that the raw material falls from the transfer end; and
and a lower measuring conveyor that measures the weight of the raw materials that are continuously dropped and stacked on the upper measuring conveyor in real time, and supplies the cut raw materials to the mixer,
Sheet type, characterized in that it further comprises a lamination driver for reciprocating the lower measuring conveyor in the direction of the mixer so that the raw materials falling from the upper measuring conveyor and being stacked are uniformly stacked on the upper surface of the lower measuring conveyor in a zigzag manner. Quantitative supply system for raw materials. delete According to claim 1,
The control unit is
Weight information is calculated by adding the primary measurement value measured by the upper measurement conveyor and the secondary measurement value measured by the lower measurement conveyor, and when the weight information reaches a set quantity, the cutting operation is performed by the cutting unit Quantitative supply system for sheet-type raw materials, characterized in that the operation is controlled so that the delete According to claim 1,
The cutting part,
It is provided between the transfer unit and the upper measuring conveyor,
and a cutting control unit configured to change a cutting position of the cutting unit along the feeding direction of the raw material in order to correct an error between the calculated weight information and the set quantity. According to claim 1,
Between the lower measuring conveyor and the mixer,
Quantitative supply system for sheet-type raw materials, characterized in that the supply unit for supplying the raw material cut in quantity to the mixer arranged at a distance is further provided. A providing step of conveying the raw material in the direction of the mixer by the conveying unit;
a first measuring step of measuring the weight of the raw material transferred from the conveying unit and positioned on the upper part of the upper measuring conveyor and the raw material that is connected thereto and falls while acting as a load on the upper measuring conveyor;
a second measuring step of measuring the weight of the raw material that is dropped and stacked on the upper part of the lower measuring conveyor;
reciprocally driving the lower measuring conveyor along the mixer direction so that the raw materials that are dropped from the upper measuring conveyor and stacked are uniformly stacked on the upper surface of the lower measuring conveyor in a zigzag manner;
a determining step of determining whether to cut the raw material by comparing the weight information obtained by adding the first and second measured values measured in the first and second measuring steps with the set quantity of the raw material;
a cutting step of performing a cutting operation on the raw material through a cutting unit when the weight information reaches the set amount of the raw material; and
Quantitative supply method for a sheet-type raw material, characterized in that it comprises a supply step of providing the raw material cut to a quantity to the mixer through a supply unit.

Images