JPS60262714A - Apparatus for continuously producing blank strip having constant dimension and flow - Google Patents

Abstract

PURPOSE:To form a strip of bread blank or the like having constant width and thickness by providing in series two variable speed supply conveyers, constant speed and high speed conveyers and providing a weighing unit between both supply conveyers and elongating units on the upper surfaces of the constant and high speed conveyers respectively. CONSTITUTION:A bread blank 1 previously manually formed lankly is put on a supply conveyer 2 and weighed on the way of said conveyer 2 by a weighing unit 10 which weighs the weight per unit length A. And when a microcomputer detects through counting of pulses produced by a rotary transducer 9 that the blank portion An having a weighed value Xn reaches a position P corresponding to a driven roller 6 in the terminal end of the down-stream supply conveyer 4, the speed of the respective conveyers 2, 4 and constant speed conveyer 20 is set to meet a predetermined relationship. Thereafter, after the blank 1 is subjected to elongation or compression action by a holding roller 13, it is formed by an elongating unit 24 and delivered by a high speed conveyer 21.

Description

Detailed Description of the Invention (Technical field to which it pertains) The present invention is directed to continuously forming a plastic dough having elasticity and viscosity, such as bread dough, kamaboko dough, or other polymeric materials, into a belt-like dough. , relates to the quantification of the flow rate and the constantization of dimensions such as the width and thickness of the fabric.

(Prior Art) Conventionally, dough for bread and the like has been continuously supplied at a constant rate by extrusion using a screw or suction/extrusion using a piston.

However, according to these mechanical methods, pressure and stirring force are applied to the dough when the dough is fed, and the gel structure of bread dough in particular is often destroyed. Therefore, in order to restore the gel structure of the dough, a certain amount of resting time had to be provided in the subsequent process.

Furthermore, in the conventional apparatus described above, the function of extruding the dough and the function of forming the strip were performed by separate apparatuses, making the apparatus large and heavy, making it not an easy method.

(Objective) The present invention uses a simple device and a method that does not involve pressure or stirring force to continuously stabilize the flow rate of viscoelastic dough such as bread dough as it is fed. The object of the present invention is to provide a device that allows easy production of a belt-shaped fabric having a constant width and thickness.

(Structure) The apparatus of the present invention includes a conveyor device consisting of two supply conveyors driven at variable speeds and connected in series, a constant speed conveyor and a high speed conveyor connected to the supply conveyors, A weighing device installed between the conveyors; a control device connected to the weighing device that controls the conveyor according to the unit weight of dough; It consists of a dough spreading device provided.

Then, the weight value per unit length of the weighed dough is input to the control device by the load sensor of the weighing device installed between the supply conveyors, and the speed of the two supply conveyors is linked by the microcomputer. , MaIc
are separately controlled to set the speed at which the weighed portion of dough is discharged from the discharge end of the supply conveyor.

Furthermore, the constant-speed conveyor and high-speed conveyor connected in series with the supply conveyor have a dough spreading device placed above them, and the dough spreading device stretches the dough discharged from the downstream supply conveyor. The speed of the high-speed conveyor is set higher than that of the constant-speed conveyor in order to smoothly carry out the stretched dough as it is stretched. .

Therefore, in the apparatus of the present invention, the dough supplied from the dough supply device is weighed during its conveyance without being affected by the conveyors before and after it, and the dough on the supply conveyor is weighed based on the weighed value. The discharge speed is controlled, the weight of the discharged dough is averaged, and the dough is fed to a constant speed conveyor, and the dough is spread by a dough spreading device installed over the top of the constant speed conveyor and the high speed conveyor. The rolled out dough is then supplied to the processing process.

(Example) To explain the configuration of the present invention based on an example, as shown in FIG. 1, the apparatus of the present invention includes two supply conveyors 2.4 arranged in series and a supply A constant speed conveyor 20 connected to the terminal end of the conveyor 4. A weighing device 1o is installed between the device supply conveyors 2 and 4, which are comprised of a high-speed conveyor 21 and a high-speed conveyor 21, and divides the weight of the dough 1 passing over the rotating roller 11 into predetermined unit lengths. Weigh it in the same state.

Further, a constant speed conveyor 20 connected to the downstream supply conveyor 4 is provided with pressure plates 22 on both sides of the conveyor 20 to form the dough 1 into a constant width and supply it to the dough spreading device 24.

The dough spreading device 24 is disposed astride the constant speed conveyor 2o and the high speed conveyor 21, and the rollers 25 rotate and revolve according to an elliptical trajectory as shown in the figure. The dough 1 is spread out.

A weighing device 1o having an autorotating roller 11 is installed between the two supply conveyors 2 and 4 at the same level as the conveyor belts 2a and 4a. 1 is divided into unit lengths A, and the unit weight of the dough 1 is measured by the load sensor 12. In the weighing device N1o of the present invention, the
- The reason why the roller 11 is used is that if it is made a free roller, it may be affected by the drive of the supply conveyors 2 and 4 before and after it.・If the weight is interlocked with a chain, the driving torque may affect the weight, making it impossible to obtain an accurate weighing value.

Furthermore, a pressing device 13 is provided above the downstream supply conveyor 4 at a position corresponding to the driven roller 6, and is driven in synchronization with the supply conveyor 4. In the embodiment shown below, as the dough pressing device 13, as shown in FIG. 4, a presser row 514 having a spiral protrusion formed on its outer periphery is used. Pressure portions 1a are formed on the fabric 1 at predetermined intervals by the protrusions 14a of the pressing roller 14, and the fabric 1 is expanded and contracted via the pressure portions 1a.

The supply conveyor 2.4 has its drive roller 3.5 driven by a motor 7 via a belt or chain at a set speed. This is a value calculated by a microcomputer, and furthermore, the upstream supply conveyor 2
A clutch 8 is provided on the drive roller 3 so that only the supply conveyor 2 can be stopped.

As shown in FIG. 6, the control device inputs the pulses generated from the rotary transducer 9 interlocked with the drive roller 5 and the weighed value of the load sensor 12 to the microcomputer 18, and uses the calculated value. Accordingly, the rotational speed of the motor 7 is controlled via the inverter 19. To control this, each time the fabric 1 moves a predetermined length A or a fixed length shorter than A, the rotary transducer 9 generates a weighing command, and the value is sent to the microcomputer 18. to use human power.

When the mold opening of the unit length A of the dough 1 is heavy, when the weighed portion reaches the end of the downstream supply conveyor 4, the speed of the conveyor 4 is slowed down so that the unit weight of the dough 1 is light. Sometimes, the rotation of the motor 7 is controlled to increase the speed of the conveyor 4.

Furthermore, in the apparatus of the present invention, two supply conveyors 2
．． A weighing device 10 is installed between 4 and 4, and this weighing device @1
The two supply conveyors 2.4 are driven based on the weight value weighed by zero. If there is a large local imbalance in the weight values of the weighed dough, the clutch 8 is controlled to stop the upstream supply conveyor 2 and transfer the dough 1 between the conveyors 2 and 4. It also allows for stretching.

The constant speed conveyor 20 connected to the supply conveyor 4 is driven at a constant speed V3, and has pressure plates 22 on both sides thereof.
has been established. This clamping plate 22 swings around a fulcrum 23 and clamps the fabric 1 passing on the conveyor 20 from its side, thereby compressing and reducing the width of the fabric 1 to a dimension indicated by W. In this case, even if the clamping plate 22 is a fixed device that does not swing, it can serve much the same purpose.

A high-speed conveyor 21 is connected downstream of the constant-speed conveyor 20, and a constant speed 1 faster than the constant-speed conveyor 20 is connected.
It operates on a 1ft V4. These two conveyors20.
A dough spreading device 24 is installed above the dough spreading device 21, and in this dough spreading device 24, the dough is spread along an elliptical trajectory by rollers 25 that rotate and revolve around the constant speed conveyor 20 and the high speed conveyor 21. pressed against,
Due to the stretching effect, the dough 1 is stretched to a thickness H.

In addition, in the embodiment described above, the supply conveyor 2.4
Although the apparatus of the present invention is shown using a belt conveyor, it is also possible to use a roller device instead of the belt in the apparatus of the present invention. That is, in this case, the fifth
As shown in the figure, the conveyors before and after the weighing device 10 are composed of rotating rollers 15 and 16 and are installed parallel to the frame 17, and the conveying surfaces of these conveyors are the same as the rotating rollers 11 of the weighing device 10. Form on the surface.

These rollers 15 and 16 are constructed by having a drive device built into the roller, but they may also be constructed so that a number of rollers are simultaneously driven by one drive device like a normal roller conveyor. Good things are natural.

The belt conveyor as described above is used by rotating the conveyor including the autorotating roller 15 on the upstream side of the weighing device 10 and the conveyor including the autorotating roller 16 on the downstream side including the autorotating roller 16 at a predetermined speed using the control device. This makes it possible to perform speed control similar to that in the case of Further, in this case, by providing a press roller 14 corresponding to the terminal end of the conveyor on the downstream side, one piece of dough is expanded and contracted between it and the constant speed conveyor.

(Function) Next, to explain the function of the device of the present invention, when the dough 1 transported by the dough supply conveyor 2.4 passes above the weighing device 10, the rotary transducer 9 moves a certain length A or Every time it is confirmed that the dough supply conveyor 4 has moved by a certain distance shorter than A, a supply command is issued to the load sensor 12, and based on the command, the load sensor 12 sends the weighed value X to the microcomputer 18. input. Then, the weighing values Xa, xb, etc.
Weighing position of dough with memory of △a, Ab,...
The microcomputer 18 informs the rotary transducer 4 no. 9 that ... has reached the terminal end P of the supply conveyor 4.
Understand based on information.

Then, the conveyor 4 for the weighed dough portion An
The frequency of the speed V n is adjusted by one inverter, the speed of the motor 7 is changed, and the dough is moved at a speed inversely proportional to the weighed value Xn.

In this case, X is the weight of the fabric of unit length Δ, and each portion of the fabric 1 to be moved is Aa, Ab,
Since the weights of the conveyors 2.4 and 2.4 should all be different, the speed of the dough supply conveyor 2.4 changes every time it travels the distance A. The state of the speed change becomes slower when the weighed value is heavier than the standard value, and faster when it is lighter, so that the dough 1 is transferred to the constant speed conveyor 20.

That is, in this case, the relationship between the speed Vn of each conveyor 2.4 and 20 and the weight Xn per unit length is as follows: Xa-Va=Xb-Vb=Xc-Vc=B.

(In the above formula, B is a constant value depending on the fabric style.) This also applies to differential measurement in which the unit length A for weighing is made as small as possible.

Then, the press roller 13 strongly presses the dough 1 at the end of the supply conveyor 4, so that the dough is transferred between the supply conveyor 4 and the constant speed conveyor 20 due to the speed difference between the two conveyors. The division number is forcibly stretched or shortened, and as a result, the tm unevenness between the units of A is eliminated, and the system runs on the constant speed conveyor 20, and then moves to the high speed conveyor 21. It is.

Furthermore, the length A of the fabric 1 on the constant speed conveyor 20 receives a tension inversely proportional to its weight X, so the lengths are no longer the same as Aa and Ab shown in Figure 3. , the flow rate is kept within a certain error range.In other words, only a partial weight error within the length a and Ab remains.

In this way, the fabric whose error range has been narrowed is the pressure plate 2.
2, the irregular widths are compressed to a constant width W that is smaller than before.

Simultaneously with this width compression, the fabric receives the rolling pressure of the D-ra 25 from above and is compressed in height.

At this time, the speed Vn of the conveyor 21 is ynxHxWx
When the relationship G=B (G is the specific gravity of the dough), the dough is compressed from left to right (W> and top (1)) and at a constant speed = difference in speed between conveyor 20 and high-speed conveyor 21. Under continuous stretching, the pressure within the fabric is balanced and Aa,
The partial error left in each unit of Ab is eliminated, and at the same time, the width is unified to W, the thickness is 1-4, and it is sent out.In this way, in the present invention, , a green zone of constant size and flow rate is produced continuously.

In addition, although the above-mentioned example describes only the case where the flow rate of bread dough is quantified, 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 the present invention to foods such as foods, high molecular compounds, and materials having elasticity and viscosity due to their structure.

<Effects> Since the device of the present invention has the above-described configuration and operation, even if the dough is supplied onto the feeding conveyor in an inconsistent state, the device of the present invention can It can be easily leveled when transferred between conveyors, and enables the production of dough of uniform size and thickness.

In the apparatus of the present invention, the weighing device is installed in a state that is not affected by the front and rear conveyors, and furthermore, in order to continuously weigh the dough that is in direct contact with the rotating roller, the weighing device is The value will be the correct value.

Furthermore, when the device of the present invention is applied to the bread manufacturing process, the gel structure of the dough will not be destroyed.
Since it is not necessary to provide a aging step unlike conventional devices, it is possible to downsize the bread manufacturing device and reduce the cost of the product.

[Brief explanation of drawings]

β FIG. 1 is a side view of the apparatus of the present invention, FIG. 2 is a plan view showing changes in the width of the dough, and FIG. 3 is an explanatory diagram showing the state of the dough transferred to a constant speed conveyor. FIG. 4 is a perspective view showing the configuration of the pressing roller, FIG. 5 is a side view showing another embodiment, and FIG. 6 is a block diagram of the control device. Reference numeral 1 in the figure: Dough, 2.4: Supply conveyor, 3.5: Drive roller, 6: Followed roller, 7... ...Motor, 8...Clutch, 9...Rotating transducer, 10...
... Scale mother device, 11 ... Rotating roller, 12
...Load sensor, 13...Press device, 14...Press roller, 14a...
・Protrusion, 15.16...Rotating roller, 17...
...Frame, 18...Microcomputer, 19...Inverter, 20...
Constant speed conveyor, 21... High speed conveyor, 22.
...Press plate, 23...Fully point, 24...
...Dough spreading device, 25...Roller. Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A weighing device is provided between the two serially connected supply conveyors that make up the conveyance section, a dough pressing device is provided above the terminal end of the downstream supply conveyor to move in synchronization with the latter, and a pressure plate is provided on the top surface. A constant speed conveyor having a fixed speed conveyor connected downstream thereof,
Furthermore, a high-speed conveyor that is driven at a higher speed than this constant-speed conveyor is connected downstream, and a large number of rollers that rotate and revolve on oval orbits are installed above the constant-speed conveyor and the high-speed conveyor. The two dough supply conveyors are driven at irregular speeds that are inversely proportional to the weighed value of the dough;
A continuous production device for a dough zone with constant dimensions and flow rate, characterized in that the dough is fed below a constant speed conveyor to form the dough.