JPH0133140B2 - - Google Patents

Description

[Detailed description of the invention] (Technical field to which it belongs) The present invention relates to bread dough, kamaboko dough,
The present invention relates to methods for quantifying flow rate and making dimensions such as width and thickness constant when forming continuous strips of elastic and viscous plastic dough such as other polymeric materials.

(Prior Art) Conventionally, dough for bread and the like has been fed continuously or intermittently in fixed quantities by extrusion using a screw or by an extrusion device using a piston-cylinder.

However, these mechanical methods and devices are not lightweight and heavy, and pressure and stirring force are applied during use, which can destroy the gel structure of bread dough. As a result, the dough had to be left to rest for a certain period of time in the subsequent process to restore its gel structure.

(Objective) The present invention aims to continuously stabilize the width of a plastic dough having viscosity and elasticity, such as bread dough, during the feeding process by a simple method and device that does not involve pressure. It is an object of the present invention to provide a method for forming a strip-shaped body having a constant thickness and an apparatus therefor.

(Structure) The present invention provides a conveyor comprising a supply conveyor that receives dough such as bread from a supply device and conveys it, a constant speed conveyor connected to the terminal end thereof, and a weighing platform that contacts the lower surface of the belt of the supply conveyor. and a control device that inputs the value measured by the load sensor of the weighing device and drives the drive roller of the supply conveyor in accordance with the weight of the dough.

Furthermore, a dough spreading mechanism is provided above the constant speed conveyor, and the dough is spread in the lateral direction by the rollers of the dough spreading member, thereby quantifying the flow rate of the dough.

Therefore, with the apparatus of the present invention, the dough is stabilized during its transportation process, and can be sent to the next step in a stable state.

(Example) The configuration of the present invention will be explained based on an example.
1 is a dough supply conveyor, and arrow V indicates its traveling direction and speed. 2 shows dough that is continuously fed. 3 is a weighing device, which has a weighing stand with length A. Weighing device 3
is provided with its weighing platform in contact with the back side of the belt of the dough supply conveyor 1, and measures the weight X of the dough 2 passing above it in units of the length A of the weighing platform 3a. . The length A in this case includes the smallest possible length.

Further, 4 is a drive roller of the fabric supply conveyor 1, and 5 is a rotary transducer connected to the drive roller 4 and transmitting a pulse of the amount of rotation thereof, which is used to measure the amount of movement of the conveyor.
6 is an input motor for the drive roller 4; 7 is an input motor for the drive roller 4;
This is an inverter that controls the rotation of the motor 6. 8 is a load sensor of the weighing device 3;
9 stores weight information from the load sensor 8 and position information from the rotary transducer 5;
It is a microcomputer that performs calculations and issues commands to the inverter 7.

Reference numeral 10 denotes a fabric pressing device provided above the fabric supply conveyor 1, which uses a roller or a roller having protrusions formed on the outer periphery, and is adapted to rotate in synchronization with the fabric supply conveyor 1.

Reference numeral 11 denotes a constant speed conveyor that operates at a constant speed, and is provided at the end of the dough supply conveyor 1. Also, if the dough is soft, a roller without protrusions may be used.

12 is a dough spreading mechanism provided on the upper surface of the constant speed conveyor 11, and is driven by a motor 13.
A roller 14 is provided on the upper surface of the constant speed conveyor 11 so as to repeatedly roll and move in a direction perpendicular to the running direction of the dough, and spreads the dough 2 passing over the constant speed conveyor 11 to a thickness H.

To explain the structure of the dough spreading mechanism 12 in more detail, its frame is provided so as to straddle the constant speed conveyor 11, and the frame is provided so as to straddle the constant speed conveyor 11.
A chain 16 is passed around a sprocket 15 driven by a sprocket 15, and the chain 16 is circulated in one direction.

The chain 16 is provided with an engaging element 17 such as a roller, and this engaging element 17 engages with an engaging part 18 formed in a vertical groove on the movable body 19, so that the engaging element 17 circulates together with the chain 16. The movable body 19 is caused to reciprocate along the guide 21 while sliding up and down within the engaging portion 18 as the movable body 19 moves.

Then, the fabric 2 is spread in the lateral direction by the roller 14 provided below the movable body 19 via the arm 20.

Further, the engaging portion 18 and the engaging element 17 are not limited to grooves and rollers, and other cams and cam followers may be used.

(Function) Dough 2 transported by dough supply conveyor 1
When the rotary transducer 5 passes above the weighing device 3, the dough supply conveyor 1 moves by a distance equal to the length A of the weighing device 3, or by a certain distance less than the distance A. The load sensor 8 weighs each time the weight is confirmed, and the weighed values Xa, Xb, . . . are input into the microcomputer 9. Then, in the control circuit shown in FIG. 5, the microcomputer 9 uses information from the rotary transducer 5 to inform that each dough portion An having a memory of each weight value Xn has reached the terminal end P of the supply conveyor 1. Based on this, the discharge speed of the supply conveyor 1 is changed depending on the weight of that portion.

The speed control in this case is such that the frequency is adjusted by the inverter 7 and the speed of the motor 6 is changed according to the value calculated by the microcomputer 9, and the speed is controlled by the weighed value. The value is 1/Xn, which is inversely proportional to .

Since Xn is the weight of the length An of the dough, each part Aa of the dough 2 that is continuously weighed,
The weights Xa, Xb, ... at Ab, ... are all different. Therefore, the speed of the supply conveyor 1 changes each time the weighed length A of dough is discharged, and the state of the change becomes shorter when the weighed value is heavier than the standard value, and faster when it is lighter than the standard value. The dough 2 is transferred from the supply conveyor 1 to the constant speed conveyor 11.

In other words, the speed in this case is Xa・Va=Xb・Vb=B.

(In the above formula, B is a constant value of the flow rate.) In addition, the weighing means for determining the weighed value A is
The same is true even in differential measurement where the length of is extremely small.

A fabric pressing device 10 provided above the end of the supply conveyor 1 strongly presses the fabric transferred between the conveyors, so that the fabric 2 in that area is compressed by the difference in speed between both conveyors. Since it is forcibly stretched or contracted, as a result, the weight unevenness between units of A is eliminated, and the fabric is transferred onto the constant speed conveyor 11 as a fabric with a quantified flow rate. become. In this case, the unit length A of the fabric 2 transferred onto the constant speed conveyor 11 is expanded and contracted in inverse proportion to its weight X, so as shown in FIG.
is no longer constant in length, and the flow rate of the fabric is
It is within a certain error range. In other words,
This leaves only a partial weight error within the lengths Aa and Ab.

In this way, the fabric 2 with a narrowed margin of error
is conveyed to the active part of the roller 14 provided at a height H on the constant speed conveyor 11, and is compressed to a thickness H by being subjected to rolling pressure in the orthogonal direction by the roller 14 from above. receive.

In this case, the dough 2 is spread thinner than when it enters the lower part of the roller 14, so
The stretched fabric 2 is spread out in its width direction.

At this time, the spread amount (W) of the fabric 2 in the width direction is
In the relationship with the constant value B of the dough flow rate in the present invention, B=Vm・H・W・G=constant (G is the specific gravity of the dough).

In other words, when the dough is transferred from the dough supply conveyor 1 onto the constant speed conveyor 11, its width and thickness are undefined, but due to the flow rate, it is stretched or compressed and its width and thickness are undefined. The error is within a limited range of partial indeterminacy within a limited length.

This error can be resolved by keeping the thickness of the dough constant and at the same time making the width of the dough wider than when it is conveyed by the dough supply conveyor. That is, the conveyance distance of the constant speed conveyor 11 during the reciprocating movement of the roller 14 is
By making the length L of 4 less than L, that is, by making L longer than any of Aa, Ab, ..., due to the balancing effect of the internal pressure of the fabric 2,
The width W is always constant, and a uniform fabric with few errors in size and flow rate is produced.

Moreover, the roller 14 used in the present invention
The roller 14a may be of a cylindrical shape as shown in FIG. 1, but the dough spreading effect is further improved by using a roller 14a having a tapered tip as shown in FIGS. 3 and 4. It turns out.

In addition, in the above-mentioned example, only the case where the flow rate of bread dough is quantified was described, but the device of the present invention is not limited to this example, and can also be used to quantify the flow rate of bread dough. It is naturally possible to apply this method to foods such as foods and materials such as polymer compounds due to its structure.

(Effects of the Invention) The present invention allows the dough to be continuously fed onto a conveyor to be weighed at a constant length or continuously, and the speed of the conveyor is set at an irregular speed that is inversely proportional to the weighed value. The dough is transferred to the downstream constant speed conveyor, and a dough holding device is installed above the end of the dough supply conveyor to move in synchronization with the supply conveyor, so that when the dough is transferred from the supply conveyor to the constant speed conveyor. By expanding and contracting according to the speed difference between the two conveyors, even if dough is supplied at an undefined flow rate, it can be transferred to the constant speed conveyor with less error in the unit weight of the dough. .

Furthermore, in the present invention, since a dough spreading mechanism is provided on the upper surface of the constant speed conveyor in which rollers move back and forth in a direction perpendicular to the conveying direction, the dough width can be expanded by the dough spreading mechanism. By stretching the dough, the internal pressure of the dough is evened out,
Due to the balanced effect of the internal pressure of the dough, it is possible to form the dough to a constant width and thickness.

[Brief explanation of drawings]

FIG. 1 is a side view showing the configuration of the device of the present invention;
Figure 2 is a plan view, Figures 3 and 4 are
FIG. 5 is an explanatory diagram showing the state of spreading the dough, and FIG. 5 is a block diagram of the control device. Codes in the diagram: 1...dough supply conveyor, 2...
Dough, 3... Weighing device, 4... Drive roller, 5...
...Rotating transducer, 6...Motor, 7...
...Inverter, 8...Load sensor, 9...Microcomputer, 10...Dough pressing device, 11
... Constant speed conveyor, 12 ... Dough spreading mechanism, 13
... Motor, 14 ... Roller, 15 ... Sprocket, 16 ... Chain, 17 ... Engagement element, 18
...Engaging portion, 19...Moving body, 20...Arm,
21...Guide.

Claims (1)

[Claims] 1. The dough that is continuously fed onto the conveyor is weighed at fixed length intervals or continuously, and the speed of the conveyor is set so that the dough is transported downstream at an irregular speed that is inversely proportional to the weighed value. A method for continuous production of a dough zone with constant dimensions and flow rate, characterized by transferring the dough to a high-speed conveyor and spreading the dough while widening the width on a constant-speed conveyor. 2. A dough pressing device is provided above the end of the dough supply conveyor which has a weighing table on the back side of the conveyor belt, and rotates in synchronization with the dough supply conveyor. A constant speed conveyor is provided downstream and connected to this, and a dough pressing device is provided on the upper surface of the constant speed conveyor. is equipped with a dough spreading mechanism in which rollers repeatedly roll and move in a direction perpendicular to this, and the dough is transferred from the supply conveyor to a constant speed conveyor while moving irregularly at a speed that is inversely proportional to the weighed value of the dough. A device for continuous production of a dough zone with constant dimensions and flow rate, which is characterized by transferring the dough.