JP4889299B2 - Food dough cutting and splitting apparatus and method - Google Patents

Description

  The present invention relates to an apparatus that quantitatively divides and discharges food dough having adhesive properties such as bread dough and supplies it to subsequent work processes.

As a conventional technique related to the present invention, Japanese Patent No. 2754482 filed by the present applicant can be cited. The cutter is provided with a pair of flat plates rotating in opposite directions at the bottom opening position of the hopper. In cutting food dough, when the pair of cutters rotate synchronously, the tip of the cutter is in contact with the entire length of the cutter at the same time.
In this conventional example, the longer the flat cutter is in the longitudinal direction, the longer the cut food dough becomes. Therefore, the dough cut and divided by the cutter falls by its own weight and is transferred to the conveyor provided below. When placed, the center of the cut long fabric is easily landed on the conveyor first (see FIG. 7A). When the conveyor is transported at a relatively high speed, there is a time difference between landing on the conveyor at the center and both ends of the cut long fabric, and the long fabric cut by the conveyor belt contact is buckled. May occur (FIG. 7B).
Further, as another device of the cutter device, there is Japanese Patent Publication No. 2000-2894 of the same applicant as an object for surely cutting. This is a slightly twisted shape on a virtual outer circumference where the tip of the blade of the pair of synchronously rotating cutters rotates. According to this, contact of the blade tip portion of the cutter is not performed simultaneously over the entire length in the longitudinal direction, and the dough is cut by moving the contact position of the blade in the longitudinal direction as the cutter rotates. The blades are in a so-called point contact, and the food dough is surely cut.

However, even in this technique, there is a case where it is not correctly placed on the cut conveyor. In the case of a fermented dough such as a sticky bread dough that is sticky and sticky, the dough sticks to the wall surfaces at both ends of the cutter and cannot be accurately placed on the conveyor below (for example, It is impossible to transfer to a conveyor at a predetermined position at a predetermined timing). Further, when the conveying speed of the conveyor is relatively high, the accuracy of the mounting position is further required. Such a problem has not been solved.
In other words, in a belt-shaped food dough production machine that forms a food dough into a band shape, when the leading end of the food dough to be cut overlaps the rear end of the preceding food dough from above (patent no. 3009142 and Japanese Patent No. 3371902), in the prior art, it is not possible to accurately reproduce the superimposed state. Especially when the conveying speed of the conveyor on which the dough is transferred is relatively high, the transfer of the dough is not performed accurately due to the above-described problems, and therefore, a certain strip-shaped food dough can be produced. It is not possible.
Japanese Patent No. 2754482 Open technical report 2000-2894 Patent No. 3009142 Japanese Patent No. 3371092

  The present invention can quantitatively divide and discharge sticky food dough, such as bread dough, and reliably transfer food dough having the same shape to a predetermined position of a conveyor that operates below, An object of the present invention is to provide an apparatus for reliably supplying food dough that has been quantitatively divided into processes.

That is, according to the present invention, a pair of rotating shafts are provided rotatably at the bottom opening position of the hopper, and a cutter having a blade is provided in the longitudinal direction of the rotating shaft. In the apparatus for cutting and dividing the food dough in the hopper by being in contact with each other, the apparatus is for cutting and dividing the food dough in which the end wall surface of the cutter is rotatable independently of the cutter.
Further, a pair of cutter blade tips corresponding to the synchronous rotation of the rotating shaft is provided by symmetrically providing a cutter having a shape in which the blade tip of the cutter is twisted in the circumferential direction along the other end of the blade. Is a device for cutting and dividing the food dough so that its contact position moves in the longitudinal direction of the cutter .
In addition, a pair of rotary shafts can be rotated in synchronization with the hopper bottom opening position. A cutter is provided on the rotary shaft in the longitudinal direction, and the tip ends of the pair of cutters come into contact with each other by the synchronous rotation of the rotary shaft. In the method of cutting and dividing the food dough in the hopper, the wall surface portion of the end portion of the cutter provided on the rotating shaft so as to be rotatable independently of the cutter is rotated at a rotation speed different from the rotation of the cutter. Thus, the food dough is cut and divided without cutting the food dough to adhere to the wall surface.

  In the present invention, the wall surface of the longitudinal end portion of the cutter provided on the rotating shaft is not a fixed wall surface, but can be rotated by driving independent of the rotating shaft, and the rotational speed of the wall surface portion and the rotating speed of the cutter are separated. It is possible to smoothly drop and place the cut and divided dough at a predetermined position on the conveyor without sticking from the hopper bottom to the wall surface while maintaining the rectangular shape of the hopper bottom. Become.

  Embodiments of the present invention will be described based on examples with reference to the drawings. FIG. 1 is a sectional view showing the structure of the embodiment, and FIG. 2 is a front view of a partial section of the divided discharge device. That is, a hopper 1 that accommodates the bread dough W is provided supported by the frame 2. A dividing cutter device 3 for cutting and dividing the bread dough W is provided at the bottom opening position of the hopper 1. A belt conveyor 4 is provided below the split cutter device 3. In FIG. 3, a weighing roller 5 connected to the belt conveyor 4 for measuring the weight of the bread dough W2 and a cutting device 6 are provided downstream thereof. Various forming device groups 7 such as a spreading device are provided downstream of the cutting device 6.

  The bread dough W in the elongated hopper 1 is cut into a predetermined shape by the dividing cutter device 3, dropped and mounted on the belt conveyor 4 as an elongated chunk-shaped dough W 1 and conveyed downstream. On the belt conveyor 4, the divided bread dough W1 is connected to the chunk-shaped dough W1 that has been cut and divided before and the chunk-shaped dough W1 that has been cut and divided thereafter, so that they are downstream as continuous dough W2. It is conveyed to. And this continuous bread dough W2 conveyed is measured with the weighing roller 5, and it cut | disconnects with the cutting device 6, and obtains bread dough W3 of a predetermined | prescribed weight. Further, the bread dough W3 is subjected to various moldings by the molding device 7 as necessary.

As a specific example of the split cutter device 3, a pair of opposed rotating shafts 31 are provided so as to be synchronously rotatable along the longitudinal direction of the bottom opening.
A rotating body 33 having a plurality of blades 32 is attached to each rotating shaft 31. A part of the upper part of the blade 32 is positioned so as to be within the opening. Therefore, the food dough W stored in the hopper 1 is stored and held by the pair of rotating bodies 33.
In the present embodiment, three blades 32 are provided in the radial direction around the rotating body 33 around the rotating shaft 31, so that the three blades 32 equally divide the rotating body 33 at a circumference of 120 degrees. .
The pair of opposed rotating shafts 31 are configured to rotate inward in synchronization with each other.

As shown in detail in FIG. 4, the tip end 34 of the blade 32 is not provided on the same bus bar on the virtual outer circumference of the cutter blade 32 and is twisted by a predetermined angle in the circumferential direction ( It has a shape with a lead attached.
By the synchronous rotation of the pair of rotating shafts 31, the blade 32 also rotates in synchronization with each other, and the blade tip portions 34 are in contact with each other.
Since the blade tip 34 of the rotating body 33 is twisted, the blade tip 34 is not in contact with the longitudinal direction at the same time when cutting the cloth as in the prior art. That is, since the blades 32 of the pair of rotating shafts 31 have a symmetrical shape, the blade tip 34 is brought into point contact when rotated synchronously, and the contact position becomes the length of the cutter along with the rotation of the blade 32. Move in the direction.
In this embodiment, the twist (lead angle) of the blade 32 is about 20 degrees, the rotation shaft rotates about 20 degrees, and the contact position moves from the end of the blade 32 to the other end. The twist directions of the blades 32 of the rotating body 33 are formed symmetrically so that the direction moves from the downstream side of the conveyor to the upstream side direction.

As shown in FIG. 4, a rotating plate 36 is provided at the end of the pair of rotating shafts 31 so as to be connected to the rotating body 33. The rotating plate 36 is made to be rotatable independently of the blade 32 by attaching a disk-shaped plate of the same shape to the end of the rotating shaft 31.
The split cutter device 3 is provided with a cutter motor 37 for driving the pair of rotary shafts 31 so that the blades 32 rotate in synchronization with each other.
The rotation plates 36 provided on the pair of rotation shafts 31 are also rotated inward in synchronization.
The cutter motor 37 controls the rotation of the cutter motor 37 by the control means 38. The synchronous rotation means of the rotating shaft 31 can be performed by a known means, for example, a mechanism having a plurality of gears (see Japanese Patent Laid-Open No. 9-220048).
The rotating plate 36 is provided with a rotating plate motor 48 so as to rotate separately from the blade 32 that rotates about the pair of rotating shafts 31. The rotating plate motor 48 is controlled by the control means 38 so that the rotating plate motor 48 can be rotated at a rotation direction and a rotation speed different from the rotation of the blade 32.

The rotation control of the blade 32 and the rotating plate 36 is performed as follows (see FIG. 5). FIG. 5A shows the stop (origin) position of the cutter device. That is, it is the state which the front-end | tip parts 34F of the braid | blade 32 in the conveyor downstream end side contact | abut, and the bottom part of the hopper 1 is sealed. The pair of rotating shafts 31 are rotated by a start signal from the operation switch, and rotated 120 degrees in the direction of arrow A until the next blade comes into contact (see FIG. 5C). Further, the rotating shaft 31 is synchronously rotated by a slight angle in the direction of rotation of arrow A (inner feed direction) to separate the blade tip 34 (FIG. 5D), and then the rotating shaft 31 is reversely rotated to the downstream end side. The blade tip 34F is brought into contact with the blade to stop the rotation (FIG. 5E).
The control means 38 controls the cutter motor 37 so as to repeat this one cycle. The start of the cycle after the manual start signal at the initial start is performed by detecting the rear end portion (upstream side of the belt conveyor 4) of the food dough W2 cut and placed on the conveyor 4 in the previous cycle. Is performed by a signal detected.
The rotation of the rotation plate 36 is forward rotation in the B direction shown in FIG. 5 during the one cycle. That is, the rotation plate 36 performs forward rotation while the blade 32 rotates by a slight angle (FIG. 5D), and then reversely rotates and contacts the blade tip 34 again (FIG. 5E). That is, the rotation plate 36 repeats forward rotation and stop.

Next, the operation process of the present embodiment will be described. From the state where the bottom opening of the hopper 1 is blocked by the divided cutter device 3 (FIG. 5A), the cutter motor 37 is driven by the start signal, and the rotary shaft 31 is driven. The blade 32 bites into the bread dough W by the rotation of.
In this embodiment, the blade 32 has the tip 34 of the blade 32 inclined with respect to the radial direction (radial direction) of the rotary shaft 31 and oriented in the rotational direction. (Fig. 5B). Therefore, in the operation in which the bread dough W is sent downward, the sliding of the blade 32 and the bread dough W is prevented, and the blade 32 forcibly pulls the bread dough W downward along with the rotational movement of the blade 32, and then the blade 32 The front end 34 comes into contact with the bread dough W and can be cut and divided quantitatively (FIG. 5C).

  In the cutting of the dough W, the cutting of the dough W is first started by the contact of the blade downstream end 34F on the conveyor downstream end side. Further, as the blade 32 rotates (about 20 degrees), the bread dough W is successively cut from the upstream dough. Accordingly, the bread dough W1 to be cut sequentially by the movement of the cutting position of the blade 32 first falls from the bottom opening downstream side (left direction in the drawing) of the hopper 1 (FIG. 6A), and the bread dough W1 is placed on the belt conveyor 4. (FIG. 6B). At the time of cutting, the blade 32 and the rotating plate 36 rotate synchronously, so that the bread dough W1 adheres to the fixed wall surface (the hopper, the wall surface of the frame) as in the past, and the end portion of the bread dough W1 is left behind. Absent.

  When the bread dough W is cut, the bread dough W1 is easily separated from the blade 32 by rotating by a slight angle so that the blade tips 34 come into contact with each other and then further apart (FIG. 5D). As described above, since the rotating plate 36 rotates in the forward direction (B direction shown in FIG. 5) while the blade 32 is in the closing, separating, reversing, and closing operation, the bread dough W1 and the blade 32. The rotation plate 36 is displaced, the adhesion of the wall surface of the rotation plate 36 is suppressed, and the bread dough W1 and the blade 32 can be reliably separated. The rotational speed of the rotating plate 36 in the forward direction can be arbitrarily set according to the separation state of the bread dough W1.

At this time, since the recess 32 (concave portion) is provided in the blade 32, the recess 39 becomes a non-contact portion between the fabric W and the blade 32 in the hopper 1. It has been observed that the adhesiveness is suppressed and the cut dough W1 is easily separated from the blade 32.
In addition, since the blade tip 34 is slightly twisted in the sealed state of the bottom of the hopper, a gap 35 occurs in the blade tip 34 in any of the longitudinal directions, but it has viscoelastic adhesiveness like bread dough. The dough does not leak from the gap 35 as described above.

  According to the embodiment of the present invention, the dough W is divided so as to surround the bread dough W in the hopper 1 by the blade 32 and the rotating plate 36 as the cutter device, and the divided dough W1 adheres to the blade and the shape is deformed. There is no such thing. Further, the blade 32 uses a dough non-adhesive material made of plastic as a material (for example, polypropylene, ultrahigh molecular weight polyethylene, etc.), so that a series of operations of cutting, dividing and transferring to the bread dough W can be performed accurately.

An example of the other portion will be described. When the downstream end portion of the cut and divided bread dough W1 is overlapped with the upstream end portion of the continuous dough W2, the conveyor belt at the place where the bread dough W1 is transferred to the belt conveyor 4 is described. About the shape, as shown in FIG. 8, an example in which both ears 41 of the conveyor belt are raised is shown. In this case, by using a conveyor belt having a structure in which two flat portions having the same width as the bread dough W2 and the outer belt portion 41 of the conveyor belt are combined, a belt guide 46 provided on the conveyor frame is used to convey the conveyor belt ear. The upper side of the two-sheet joining portion of the portion 41 is lifted to guide the fabric W2. This is for guiding the dough so that the upper dough does not slide down from the lower dough when the transferred dough W1 is a relatively thick dough.
Thereby, even if the cut bread dough W1 is a relatively thick dough, the bread dough is not displaced from the lower dough, and can be conveyed to the next step as a straight continuous bread dough W2.
In this case, when detecting the rear end portion of the bread dough W2 by the detection sensor 45, the detection sensor 45 is set in, for example, an oblique direction so that the lifted belt portion does not interfere with the detection of the rear end portion of the bread dough W2. By installing so that the bread dough W1 can be detected, continuous bread dough W2 can be obtained.

  As another embodiment of the sensor 45, a sensor 45 is provided at the upstream end of the belt conveyor 4, and the distance to the rear end of the bread dough W2 on the belt conveyor 4 is detected. Based on the distance signal from 45, the control means 38 outputs a division signal to the cutter, the bread dough W is cut by the cutter, and the bread dough W1 on the belt conveyor 4 is overlapped with the leading end of the bread dough W1 to be continuous bread dough W2 can be obtained.

Although the embodiments are as described above, the present invention is not limited to the embodiments, and various design changes can be made within the scope of the claims.
For example, in this embodiment, the blade 32 is made by cutting a resin round bar material, and in this case, a wall surface (rotating plate 36) provided at the end of the blade 32 is used. ) And the rotating plate 36 can be rotatably provided only on the downstream side of the conveyor where the divided food dough is difficult to separate.
As another embodiment of the cutter, as shown in FIG. 9, the blade 32 may be configured to be screwed so that the first blade, the second blade, and the third blade surround the rotation shaft.

It is sectional drawing of the division | segmentation discharge apparatus which concerns on this invention. It is a front view of the partial cross section of the division | segmentation discharge apparatus which concerns on this invention. It is a side view of the partial cross section of the division | segmentation discharge apparatus which concerns on this invention. It is a perspective view of the cutter apparatus of this invention. It is a figure which shows operation | movement of the cutter apparatus of this invention. The transfer of the division | segmentation material | dough by the cutter apparatus of this invention is shown. The transfer of the division | segmentation material | dough by the conventional cutter apparatus is shown. The state which raised the ear | edge part of the belt is shown. The other Example of a cutter apparatus is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hopper 2 Frame 3 Dividing cutter device 4 Belt conveyor 5 Weighing roller 6 Cutting device 7 Molding device 31 Rotating shaft 32 Blade 33 Rotating body 34 Blade tip 35 Clearance 36 Rotating plate 37 Cutter motor 38 Control means 39 Depression 45 Sensor 48 Rotating plate motor W Bread dough W1 Chunk dough W2 Continuous bread dough W3 Bread dough cut to a predetermined weight A Blade rotation direction B Rotation plate rotation direction

Claims (3)

A pair of rotary shafts are provided rotatably at the bottom opening position of the hopper, a cutter having a blade is provided in the longitudinal direction of the rotary shaft, and the blade tips of the pair of cutters contact each other by the synchronous rotation of the rotary shaft. An apparatus for cutting and dividing food dough in a hopper, wherein the end wall surface of the cutter is rotatable independently of the cutter. A pair of cutter blade tips corresponding to the synchronous rotation of the rotary shaft is provided by symmetrically providing a cutter having a shape in which the blade tip of the cutter is twisted in the circumferential direction along the other end of the blade. 2. The food dough cutting and dividing apparatus according to claim 1, wherein the position is moved in the longitudinal direction of the cutter . A pair of rotating shafts are provided rotatably at the hopper bottom opening position, and a cutter is provided on the rotating shaft in the longitudinal direction, and the tip ends of the pair of cutters come into contact with each other by the synchronous rotation of the rotating shaft. In the method of cutting and dividing the food dough inside, by rotating the wall surface portion of the end portion of the cutter provided on the rotation shaft independently of the cutter at a rotation speed different from the rotation of the cutter A food dough cutting and dividing method, wherein the food dough is cut and divided without sticking to the wall surface portion.

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