JP3948673B2 - Food material supply method and apparatus - Google Patents

Description

The present invention relates to a vane pump for supplying a food material having viscoelasticity such as bun dough or bean paste, and a supply means including a control unit for controlling the driving of the vane pump, and more specifically, the vane pump. It is related with the supply method and apparatus of the food material which can suppress the fluctuation | variation of the pressure concerning the food material in the outlet side flow path connected with a vane pump by carrying out fluctuation control of the rotation speed of this periodically.

2. Description of the Related Art Conventionally, a food material supply apparatus includes a vane pump for supplying a skin material or an inclusion material as a food material to a polymerization nozzle as an extrusion nozzle, and a control unit for controlling the driving of the vane pump, and further, a rod-shaped food There is a wrapping machine including a wrapping and cutting device that divides a dough into wrapping food (for example, Patent Document 1).

Each food material accommodated in each hopper is transferred to a vane pump by a transfer screw device. The transferred food material is temporarily filled in a measuring chamber formed by two vanes in the supply device, the rotor, and the pump casing, and toward the outlet side flow path of the pump casing that communicates with the polymerization nozzle as the rotor rotates. Be transported. Thereafter, the preceding vane positioned forward in the rotational direction is immersed in the rotor along the trajectory of the outer cam in the housing, and the measuring chamber and the outlet side flow path communicate with each other. Further, the food material is supplied into the polymerization nozzle through the outlet-side flow path by the thrust of the other succeeding vane located at the rear in the rotational direction as the rotor rotates. Then, the inner packaging material forming the extrusion port of the polymerization nozzle is continuously extruded from the outer nozzle as a stick-shaped food dough covered with the outer skin material, and is almost constant by the covering cutting device provided below the polymerization nozzle. Divided into heavy encapsulated food.

However, the food material having viscoelasticity sent from each vane of the supply device to the polymerization nozzle is compared with the inside of the vane pump measurement chamber due to the properties of the food material and the resistance in the flow path to the extrusion port of the polymerization nozzle. The pressure is high. As a result, when the preceding vane that formed the weighing chamber is immersed inside the rotor, and the weighing chamber and the outlet side channel of the feeding device communicate with each other, the pressure applied to the food material in the outlet side channel is relatively Move to the food material in the weighing chamber where low pressure was applied and level it. For this reason, the pressure applied to the food material in the outlet side flow path and in the polymerization nozzle also temporarily decreases, and as a result, the extrusion amount (synonymous with the extrusion speed) decreases. Therefore, when the pressure applied to the food material in the outlet-side flow path and the polymerization nozzle repeatedly fluctuates, the rod-shaped food dough is pulsated and pushed out from the polymerization nozzle. In particular, when using a food material containing a large amount of air bubbles, using a food material with low fluidity, or extruding the food material from a narrow extrusion port, the pulsation appears remarkably. And, when the rod-shaped food dough pushed out by pulsation is divided by the enveloping cutting device that drives at a constant cycle, the weight of the encapsulating food may vary, and a product with non-uniform size and shape may be produced. there were.

Moreover, when the preceding vane is immersed in the rotor, the amount of protrusion of the preceding vane that occupies the outlet-side flow path gradually decreases. The decrease reduces the supply of food material to the polymerization nozzle and reduces the pressure on the food material. And when the degree of immersion of the preceding vane is not constant, the pressure applied to the food material in the outlet side flow path fluctuates, so that the rod-shaped food dough is pulsated and pushed out from the polymerization nozzle.

Further, as a device for transferring the food material to the vane pump, there are the screw device described above, a roller device shown in this embodiment described later, and the like. When the food material is transferred to the vane pump using these transfer devices, the food material filled in the measurement chamber may not be enough for the volume of the measurement chamber. In such a case, it is possible to increase the transfer rate of the food material by increasing the rotation speed of the transfer device and improve the filling rate into the measuring chamber, but the food material is stirred and the physical properties of the food material are increased. There is a problem that the speed of the transfer device is reduced, and the rotational speed of the transfer device is limited. Thus, when the food material filled in the measurement chamber is less than the volume of the measurement chamber, the pressure in the measurement chamber is lower than the pressure in the outlet side flow path, and thus the same as described in Patent Document 1 above. There was a problem.
JP 2001-352960 A

The problem to be solved is that when the vane pump as the food material supply means continuously supplies the food material to the outlet side channel, the pressure applied to the food material in the outlet side channel repeatedly fluctuates. is there. Due to the fluctuation of the pressure, for example, pulsation occurs in the rod-shaped food dough extruded from an extrusion nozzle such as a polymerization nozzle communicating with the outlet-side flow path, and further, in the divided food formed by dividing the rod-shaped food dough Variations in weight and size had occurred. Therefore, a supply means for suppressing the fluctuation of the pressure has been strongly desired.

The present invention has been made in view of the above-described problems, and the invention according to claim 1 is directed to a method of continuously supplying a food material accommodated in a hopper to an outlet-side flow path by a vane pump. When each of the plurality of vanes provided at equal intervals in the rotor moves through the supply section for supplying the food material to the outlet-side flow path, the rotational speed of the rotor is set to the reference rotational speed and the reference rotational speed. This is a method for supplying a food material that is rotated at a high speed and is repeatedly rotated for each of a plurality of vanes.

The invention according to claim 2 is a supply device including a vane pump that supplies food material to the outlet-side flow path, and a control unit that controls driving of the vane pump. The control unit includes the vane pump. A detecting device for detecting a rotation angle of the rotor; and a rotation speed of the rotor in a supply section in which each of a plurality of vanes provided at equal intervals on the rotor of the vane pump supplies food material to the outlet-side flow path. Is controlled so as to shift at a reference rotational speed and a high speed range with respect to the reference rotational speed, and the shift control can be repeatedly controlled for each of the plurality of vanes.

According to the food material supply method and apparatus of the present invention, when the food material is continuously supplied to the outlet side flow path by the vane pump, it is possible to compensate for the pressure drop applied to the food material in the outlet side flow path. Furthermore, it is possible to suppress fluctuations in the pressure. Furthermore, the pulsation of the bar-shaped food dough continuously extruded from the extrusion nozzle communicating with the outlet-side flow path is suppressed, and the variation in the weight of the divided food cut from the bar-shaped food dough by the cutting device can be suppressed. it can.

Hereinafter, the skin material supply device 10 according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory front view of an extrusion apparatus 1 provided with an outer skin material supply apparatus 10. FIG. 2 is a partial detailed explanatory view of the extrusion apparatus 1 shown in FIG. FIG. 3 is an explanatory view taken along the line AA in FIG. FIG. 4 is a detailed explanatory diagram of the skin material supply device 10 in FIG. 2. FIG. 5 is an explanatory view schematically showing the rotation operation of the rotor 15 of the outer skin material supply apparatus 10. FIG. 6 is a line graph showing the divided weight of the skin material WA.

Referring to FIGS. 1 to 4, the extrusion apparatus 1 includes an outer shell material supply device 10 that supplies an outer shell material WA as a food material to an upper portion of a base 3, and an inner packaging material that supplies an inner packaging material WB as a food material. A supply device 20 is provided. Between the outer shell material supply device 10 and the inner packaging material supply device 20, there is provided a superposition nozzle 30 as an extrusion nozzle that continuously extrudes the rod-shaped food dough WC covered with the outer skin material WA. Yes.

Below the superposition nozzle 30, an enveloping / cutting device 40 for enveloping and cutting the rod-shaped food dough WC pushed out from the superposition nozzle 30 is provided. Further, below the enveloping / cutting device 40, a conveyor device 50 is provided that conveys the encapsulated food WD encapsulated and cut by the enveloping / cutting device 40 to the next process. Moreover, the control part 60 which drives and controls each said apparatus is provided.

The skin material supply device 10 includes a skin material hopper 11 for housing the skin material WA, a transfer roller 12 and a skin material pump 13 inside the bottom of the skin material hopper 11, and the transfer roller 12 and the skin material. The pump 13 is detachably fixed to the base 3 in a state where the pump 13 is accommodated in the outer shell material hopper 11. More specifically, the outer shell material hopper 11 is provided with an inlet 11A for the outer skin material WA at the top, and at the bottom is an arc-shaped roller-side recess 11B along the outer peripheral surface of the transfer roller 12 and the outer shell pump 13. A pump-side recess 11C is formed. Furthermore, an outlet-side flow channel 11D communicating with the polymerization nozzle 30 is provided in communication with the pump-side recess 11C.

The transfer roller 12 is a rotating roller that transfers the skin material WA accommodated in the skin material hopper 11 to the skin material pump 13. The transfer roller 12 is fitted to a rotary shaft 14 supported by the outer shell material hopper 11 in a horizontal and rotatable manner, and they integrally rotate in the direction of the arrow R1. Further, a plurality of grooves 12A are engraved at equal intervals on the outer peripheral surface of the transfer roller 12, and there is an effect of efficiently transferring the skin material WA.

The skin material pump 13 is a vane pump as a metering pump, and includes a rotor 15 and three sets of six vanes 16. The rotor 15 is supported horizontally and rotatably on the outer shell material hopper 11, and is provided in parallel with the rotating shaft 14 of the transfer roller 12. In addition, radial slits 15A are formed at equal intervals in the rotor 15, and six vanes 16 that are movable in the slits 15A are supported. The outer shell material hopper 11 is provided with a pair of cam members 17 formed with cam curved surfaces for moving the vanes 16 in the radial direction according to the rotation of the rotor 15.

The cam curved surface will be described according to the operation in which the rotor 15 rotates in the direction of the arrow R2. Referring to FIG. 4, the cam curved surface 17 </ b> A is a section formed so that the vane 16 is immersed from the outer peripheral surface of the rotor 15. The cam curved surface 17 </ b> B is a section formed so that the tip of the vane 16 is the same as the outer peripheral surface of the rotor 15. The cam 17 </ b> C is a curve formed symmetrically with the cam curved surface 17 </ b> A, and is a section where the vane 16 gradually advances from the outer peripheral surface of the rotor 15. The cam curved surface 17D is a constant arc-shaped section that maintains the state in which the vane 16 protrudes from the outer peripheral surface of the rotor 15 to the maximum.

The outer skin pump 13 is formed in an arc shape along the outer peripheral surface of the rotor 15, two adjacent vanes (for example, 16A and 16B in FIG. 4), and the cam curved surface 17D within the section of the cam curved surface 17D. One metering chamber 13A is formed surrounded and partitioned by the inner peripheral surface of the pump-side recess 11C as a pump casing. As the rotor 15 rotates, the vane 16A positioned forward in the rotational direction comes into sliding contact with the cam curved surface 17A of the cam member 17 provided in the outer shell material hopper 11, and follows the locus of the cam curved surface 17A. It moves in the slit 15A and gradually immerses from the outer peripheral surface of the rotor 15. The vane 16B located behind the other forming the measuring chamber 13A continues to rotate while maintaining the state along the inner peripheral surface of the pump-side recess 11C, and the outer skin material WA is transferred to the outer skin material hopper 11. Is supplied to the polymerization nozzle 30 through the outlet side flow passage 11D. As shown in FIG. 4, the section from the position of the vane 16B to the position of the vane 16A is defined as a supply section 13B for the outer skin material WA, and each of the vanes 16 is moved in the supply section 13B to fill the measuring chamber 13A. The outer skin material WA is sequentially supplied to the polymerization nozzle 30. In the present embodiment, six measuring chambers 13A are formed by one rotation of the rotor 15. The cam member 17 may be formed integrally with the outer skin material hopper 11.

The rotary shaft 14 fitted to the transfer roller 12 and the rotor 15 of the rotary pump 13 are interlocked with the roller drive shaft 18 and the pump drive shaft 19 provided in the base 3 via respective connecting portions 18A and 19A. It is connected. Further, the roller drive shaft 18 and the pump drive shaft 19 are connected to the control motor M1 by a rotation transmission mechanism of a gear train, and rotate inward of each other. In addition, the control motor which rotationally drives the transfer roller 12 and the rotary pump 13 may use a separate motor, and may each be provided so that adjustment is possible.

Referring to FIGS. 1 to 3, the inner packaging material supply device 20 includes an inner packaging material hopper 21 for accommodating an inner packaging material WB, and a pair of screws 22 </ b> R and 22 </ b> L below the inner packaging material hopper 21. It is a configuration provided horizontally and rotatably. The spiral directions of the spiral blades in the screws 22R and 22L are opposite to each other and are formed at the same pitch.

The screws 22R and 22L are interlocked and connected via a rotation transmission mechanism such as a gear by driving a control motor M2 mounted inside the base 3, and rotate inwardly of each other. The inner packaging material WB is transferred to the inner packaging material pump 23 by the rotation of the screws 22R and 22L.

The inner packaging material pump 23 is a vane pump similar to the outer skin material pump 13 and includes three vanes 26 that are movable in the radial direction. The inner packaging material pump 23 includes a pump casing 24 connected to an end portion of the inner packaging material hopper 21, and an inlet 24A is formed on the inner packaging material hopper 21 side. A rotor 25 is vertically and rotatably provided at the back of the inlet 24A. The lower end shaft portion of the rotor 25 is linked and connected to the control motor M3 via a rotation transmission mechanism such as a gear.

The rotor 25 has a plurality of slits 25A formed at equal intervals, and three vanes 26A, 26B, and 26C are supported so as to be movable in a horizontal radial direction. The pump casing 24 is provided with a cam member 27 having an appropriately shaped cam curved surface that moves the vanes 26A, 26B, and 26C in the radial direction as the rotor 25 rotates.

The inner packaging material pump 23 is surrounded by the outer peripheral surface of the rotor 25, two adjacent vanes (for example, 26A and 26B in FIG. 3), and the inner peripheral surface of the pump casing 24 formed along the cam curved surface. One partitioned measuring chamber 23A is formed. The vane 26A located in the front in the rotational direction is brought into sliding contact with the cam curved surface 27A of the cam member 27 provided in the pump casing 24 as the rotor 25 rotates, and the slit 25A is along the locus of the cam curved surface 27A. It moves in and gradually immerses from the outer peripheral surface of the rotor 25. Further, the vane 26B located at the other rear side forming the measuring chamber 23A continues to rotate while maintaining the state along the inner peripheral surface of the pump casing 24, and through the outlet side flow path 24B of the pump casing 24, The inner packaging material WB is supplied to the polymerization nozzle 30. The cam member 27 may be formed integrally with the pump casing 24.

Referring to FIG. 2, the superposition nozzle 30 has a double structure in which an inner packaging material nozzle 35 for extruding the inner packaging material WB and an outer skin material nozzle 36 surrounding the inner packaging material nozzle 35 are detachable and replaceable. The inner packaging material nozzle 35 and the outer skin material nozzle 36 are connected to the outer skin material supply device 10 and the inner packaging material supply device 20 via connection pipes 37A and 37B, respectively.

By mounting the superposition nozzle 30 configured as described above on the base 3, supplying the outer skin material WA from the outer skin material supply device 10, and supplying the inner packaging material WB from the inner packaging material supply device 20 to the superposition nozzle 30, A rod-shaped food dough WC covered with an inner packaging material WB is extruded from the polymerization nozzle 30. In addition, the shape of the extrusion port of each nozzle can be arbitrarily set such as a circle, a square, a polygon, or a design. Further, a plurality of food materials may be joined in layers.

A covering / cutting device 40 is provided below the superposition nozzle 30. The enveloping / cutting device 40 constitutes a plurality of shutter bodies 42 and envelops and cuts the extruded stick-shaped food dough WC to form encapsulated food WD. The shutter body 42 may have a known configuration, for example, the means shown in Japanese Patent No. 2916515 or Japanese Patent No. 3016246 filed by the present applicant. Further, the enveloping / cutting device 40 moves up and down in synchronization with an upper and lower platform 51 of a conveyor device 50 to be described later.

A conveyor device 50 is provided below the enveloping / cutting device 40. The upper and lower platform 51 is provided so as to be movable up and down by a vertical cam 54 and a link mechanism 55 connected to a control motor M4. The drive roller 52 is linked to the control motor M5 by a gear train (not shown). The belt 53 wound around a plurality of rollers such as the upper and lower bases 51 and the driving roller 52 moves up and down with the vertical movement of the upper and lower bases 51, and the rod-shaped food when the encapsulated food WD is encapsulated from the rod-shaped food dough WC. Supports the lower surface of the fabric WC. Then, the driving roller 52 is rotated by the intermittent driving of the control motor M5, and the belt 53 is rotated to convey the encapsulated food WD to the next process.

Further, referring to FIG. 1, the extrusion device 1 causes the control unit 60 to supply the outer skin material WA and the inner packaging material WB and the rotational speed of the rotor 15 of the outer skin material pump 13 and the rotor 25 of the inner packaging material pump 23. Acceleration start timing, acceleration angle, acceleration ratio, dividing speed of encapsulated food WD (synonymous with the number of divisions per unit time), conveying speed of belt 53, etc. are set and input, and each part of extrusion device 1 is started and stopped An operation panel 61 provided with a drive switch for controlling and a control device 62 for controlling the drive motor of each part based on numerical values inputted and set.

Further, referring to FIG. 3, a pulse encoder 65 is interlocked and connected to the pump drive shaft 19 of the skin material supply device 10 as means for detecting the rotation angle D of the rotor 15. Explaining its configuration, the drive gear 63 is pivotally attached to the pump drive shaft 19 connected to the rotor 15. Further, the pulse encoder 65 is fixed to a bracket 66 erected from the base 3, and a driven gear 64 is pivotally mounted on the rotation shaft 65 A of the pulse encoder 65 and meshed with the drive gear 63. . The drive gear 63 and the driven gear 64 are gears having the same number of teeth. Therefore, the pulse encoder 65 rotates in synchronization with the rotor 15 and can detect the rotation angle D of the rotor 15.

Next, the control means for the rotational speed (synonymous with angular speed) of the rotor 15 will be described. In order to explain the rotation operation of the outer shell pump 13, the position of the vane 16B shown in FIG. The position of the vane 16B is the start point of the supply section 13B of the skin material WA as described above. The position of the vane 16A is the end point of the cam curved surface 17D and the starting point of the cam curved surface 17A. At this position, the rotation shaft 65A of the pulse encoder 65 connected to the rotor 15 is also set as the reference position, which is 0 degree.

FIG. 5 schematically shows changes in the rotational speed V of the rotor 15. An angle D at which the rotor 15 rotates in the direction of the arrow R2 is shown on the horizontal axis, and a rotation speed V is shown on the vertical axis. The rotor 15 rotates from the reference position at the angle D1 at the reference rotational speed V1, with the angle formed by the adjacent slits 15A (synonymous with the angle formed by the adjacent vanes 16) as the one section, and thereafter the section of the angle D2 is rotated. It rotates at a high speed V2 that is faster than the reference speed V1. Then, the section of the angle D3 is rotated at the reference rotation speed V1 until it is decelerated again and rotated 60 degrees from the reference position. The rotor 15 rotates while repeating this process six times while the rotor 15 makes one rotation.

The reference rotation speed V1, the high-speed rotation speed V2, and the angles D1, D2, and D3 can be set by inputting to the operation panel 61. The angles D1, D2, and D3 are detected by the pulse encoder 65 as described above, and a detection signal is transmitted to the control device 62.

[Examples 1 to 7]
Using the extrusion device 1, the Kasuga bun dough (steamed bun dough) was divided as the skin material WA. In this example, the inner nozzle 35 of the polymerization nozzle 30 was attached with a solid stopper without a nozzle port, and the outer material nozzle 36 having a nozzle diameter of 38 mm was used. The reference rotation speed V1 of the rotor 15 was set to 1 rotation / minute, and the angle D2 of the section rotating at high speed was set to a constant 15 degrees. Moreover, the cutting frequency of the enveloping cutting apparatus 40 was 20 times / minute. Under such setting conditions, the angle D1 is set to 0 degrees, 10 degrees, 20 degrees and 30 degrees, and the high speed rotation speed V2 is set to 1.05 × V1, 1.1 × V1, 1.2 × V1. Thus, the seven divisions (Examples 1 to 7) combined were performed. Then, 30 divided doughs WD divided continuously were used as samples.

[Comparative Example 1]
In Comparative Example 1, the rotor 15 was rotated at a constant speed of the reference rotational speed V1, and the other conditions were set to the same conditions as in the above example. That is, this comparative example 1 is the division | segmentation of the food dough by the conventional extrusion apparatus.

Examples 1 to 7 and Comparative Example 1 are compared. Table 1 summarizes various results of Examples 1 to 7 and Comparative Example 1 in a list, and for each example, angle D1, high speed rotation speed V2, maximum weight (unit g), and minimum weight (unit g). ), Average weight (unit: g), and standard deviation. It can be determined that the smaller the standard deviation value, the less the variation in weight.

6A is a line graph showing the weight of the divided fabric in Example 3 along the time series, and FIG. 6B shows the weight of the divided fabric in Comparative Example 1 along the time series. It is a line graph shown.

When the standard deviations of Examples 2 to 6 and Comparative Example 1 are compared, the values of Examples 2 to 6 are smaller than those of Comparative Example 1. That is, Examples 2 to 6 have less weight variation than Comparative Example 1. Further, comparing FIGS. 6A and 6B, FIG. 6A is a gentle broken line, and the pulsation of the skin material WA pushed out from the polymerization nozzle 30 is less than that in Comparative Example 1. I can judge. From this, in Examples 2-6, the fluctuation | variation of the pressure concerning the outer_layer | skin material WA of outlet side flow path 11D has decreased, and it can be judged that the fall of the said pressure produced in the comparative example 1 was suppressed.

Further, when Examples 1 and 7 are compared with Examples 2 to 6, the minimum weight shows almost the same value, but the maximum weight shows a large value. The standard deviation also shows a large value. From this result, it can be judged that the pulsation of the bar-shaped food dough WC pushed out from the polymerization nozzle 30 is larger than those in other Examples 2 to 6.

In the first embodiment, the rotation of the rotor 15 is changed at a high speed before the pressure applied to the outer skin material WA in the outlet-side channel 11D is reduced, so that the supply of the outer-shell material WA is increased, and the outlet-side channel 11D. It can be understood that the internal pressure was further increased. Thus, immediately after the vane 16A starts to be immersed in the rotor 15 and the weighing chamber 13A and the outlet 11D of the hopper 11 begin to communicate with each other, that is, immediately after the vane 16B starts moving in the supply section 13B of the outer skin material WA. It can be understood that the pressure applied to the outer skin material WA hardly occurs, and that the pressure transfer requires a sufficiently wide flow path and time.

Further, in Example 7, the pressure applied to the skin material WA in the outlet-side channel 11D is temporarily reduced, and then gradually increased and the rotor 15 rotates at a high speed in a relatively high pressure section. It can be determined that the speed has changed.

In addition, although the average weight of Examples 1-7 has shown the value heavy compared with the comparative example 1, this is because the rotor 15 is provided in the said Example by providing the area where the rotor 15 rotates with the high-speed rotational speed V2. This is because the number of revolutions per unit time increases and the supply amount of the skin material WA supplied from the skin material pump 13 to the polymerization nozzle 30 increases.

[Example 8]
Next, under the same setting conditions as in Example 3, the castella bun dough (baked dough) was divided as the skin material WA. Then, 30 divided doughs WD divided continuously were used as samples.

[Comparative Example 2]
In Comparative Example 2, the rotor 15 was rotated at a constant speed of the reference rotational speed V1, and the other conditions were set to the same conditions as in Example 8. That is, this comparative example 2 is the division | segmentation of the rod-shaped foodstuff dough by the conventional extrusion apparatus.

Table 2 summarizes various results of Example 8 and Comparative Example 2 in the same manner as Table 1. When the standard deviations of Example 8 and Comparative Example 2 are compared, the value of Example 8 is smaller than the value of Comparative Example 2. That is, in Example 8, there is less variation in weight than in Experimental Example 2, and it can be determined that there are few stalks when the rod-shaped food dough WC of the outer skin material WA is pushed out from the polymerization nozzle 30.

[Example 9]
Further, Kasuga-bun dough as the outer skin material WA and strained rice bran as the inner packaging material WB are put into the extrusion apparatus 1, and the rod-like food dough WC obtained by coating the inner packaging material WB with the outer skin material WA is extruded from the polymerization nozzle 30 to obtain the encapsulated food WD. Divided. In Example 9, the nozzle 35 for the inner packaging material and the nozzle 36 for the outer skin material of the polymerization nozzle 30 were used with nozzle diameters of 36 mm and 38 mm, respectively. The reference rotational speed V1 of the rotor 15 was 1 revolution / minute, and the high-speed rotational speed V2 was 1.1 × V1. Regarding the rotation angle D of the rotor 15, the angle D1 is 10 degrees, the angle D2 of the section rotating at high speed is 15 degrees, and the angle D3 is 35 degrees. Further, the rotor 25 configured in the inner packaging material pump 13 of the inner packaging material supply device 20 was rotated at a set rotational speed. And the frequency | count of cutting | disconnection of the covering cutting apparatus 40 was 20 times / min, and 30 division | segmentation dough WD divided | segmented continuously was made into the sample.

[Comparative Example 3]
In Comparative Example 3, the rotor 15 was rotated at a constant speed of the reference rotational speed V1, and the other conditions were set to the same conditions as in the above example. That is, this comparative example 2 is the covering cutting of the rod-shaped food dough by the conventional extrusion apparatus.

Table 3 summarizes various results of Example 9 and Comparative Example 3 in the same manner as Table 2. When the standard deviations of Example 9 and Comparative Example 3 are compared, the value of Example 9 is smaller than the value of Comparative Example 3, indicating that there is little variation in weight. As shown in the ninth embodiment, in the extrusion device 1 including a plurality of supply devices 10 and 20, the rotational speed V of the rotor 15 of the skin material pump 13 provided in one of the skin material supply devices 10 is changed. It was understood that by controlling, the pulsation of the bar-shaped food dough WC continuously extruded from the polymerization nozzle 30 is suppressed, and further, the variation in the weight of the divided dough WD is suppressed.

From the results of the above embodiment, the outer shell material WA is stabilized so as to compensate for a temporary decrease in pressure applied to the outer shell material WA in the outlet-side channel 11D by appropriately controlling the rotational speed V of the rotor 15 to shift. Can be supplied. The rotating operation of the rotor 15 depends on the shape change of the cam curved surface formed on the cam member 17 and the number of vanes, and further, depending on the property of the food material and the change in the supply amount to the polymerization nozzle, Various numerical values can be set.

The extrusion apparatus 1 provided with the outer skin material supply apparatus 10 which concerns on 2nd embodiment of this invention using FIG. 7 is demonstrated. FIG. 7A is an explanatory top view of the extrusion device 1 using a partial cross section. FIG. 7 (B) is a front explanatory view taken along arrow BB in FIG. 7 (A). In addition, the overlapping description is abbreviate | omitted as attaching | subjecting the same code | symbol to the component which show | plays the same function as the extrusion apparatus 1 demonstrated in Example 1. FIG.

The extrusion device 1 according to the second embodiment has a configuration in which the driving gear 63, the driven gear 64, the pulse encoder 65, and the bracket 66 of the control unit 60 according to the first embodiment are replaced with a sensor 67, a proximity switch 68, and a bracket 69. The sensor 67 is pivotally attached to the pump drive shaft 19 connected to the rotor 15 so that the mounting position can be adjusted. Further, the proximity switch 68 for sensing the sensing body 67 is attached to a bracket 69 erected from the base 3. The sensing body 67 is provided with sensing portions 67A protruding in the radial direction at six equal positions.

The rotational position of the sensing element 67 shown in FIG. 7B corresponds to the rotational position of the vane 16 shown in FIG. That is, the rotational position of the sensing body 67 shown in FIG. 7B is the reference position. When the sensor 67 rotates from the reference position by an angle D1 at the reference rotation speed V1, the proximity switch 68 detects the sensor 67A of the sensor 67, and a detection signal from the proximity switch 68 is transmitted to the controller 60. The control unit 60 drives and controls the control motor M1 so as to rotate the rotor 15 at a high speed V2 set and inputted in advance. Thereafter, when the rotor 15 rotates by an angle D2, the proximity switch 68 stops detecting the sensing unit 67A, and the control unit 60 drives and controls the control motor M1 so that the rotor 15 rotates at the reference rotational speed V1.

The mounting rotation position of the sensor 67 can be set to be adjustable by providing a rotary scale on one of the sensor 67 and the pump drive shaft 19 and providing a pointer on the other. For example, by providing the sensor 67A of the sensor 67 at 15 degrees (corresponding to the angle D2) and attaching the sensor 67 to the pump drive shaft 19 so that the rotation angle D1 from the reference position of the rotor 15 is 10 degrees, The extrusion apparatus 1 can be set as in the third embodiment.

The extrusion apparatus 1 according to the second embodiment can control the rotation of the rotor 15 with a simple configuration compared to the first embodiment, and the food material to be used is a single type, and there are a plurality of food materials. However, it is suitable when the properties are similar. In the second embodiment, the proximity switch 68 is used as a detecting means for detecting the rotation of the sensing body 67. However, a limit switch that directly senses by contacting the sensing body 67 can also be used.

The extrusion apparatus 1 according to the embodiment of the present invention is generally as described above, but is not limited thereto, and various modifications can be made within the scope of the claims. For example, in the above-described embodiment, the rotation speed of the rotor 15 of the outer skin material supply device 10 has been described. However, by controlling the rotation of the rotor 25 of the inner packaging material supply device 20, the inside of the outlet-side flow path 24B can be controlled. The fluctuation of the pressure applied to the inner packaging material WB can be suppressed, and the pulsation of the inner packaging material WA pushed out from the polymerization nozzle 30 can also be suppressed. Furthermore, it is possible to suppress the pulsation of the bar-shaped food dough WC pushed out from the polymerization nozzle 30 by controlling the outer shell material supply device 10 and the inner packaging material supply device 20 respectively.

Moreover, although the rotational speed V of the rotor 15 of the outer shell material supply apparatus 10 has been described with a one-stage change as shown in FIG. 5, the rod-shaped food dough WC is provided by providing the rotational speed V in multiple stages or changing it in a curved line. It is also possible to suppress pulsation. Similarly, the inner packaging material supply device 20 can be controlled.

Further, the divided food WD has been described as the food to be encapsulated by the enveloping / cutting device 40. It is also possible to obtain a rod-shaped divided food WD by cutting the rod-shaped food dough WC into a desired length. By suppressing the pulsation of the rod-shaped food dough extruded from the extrusion nozzle, variation in the weight of each divided food WD is reduced, and a stable shape can be obtained.

Furthermore, the extrusion nozzle 30 of the extrusion apparatus 1 is not limited to a polymerization nozzle that extrudes a plurality of food materials, and may be a flat nozzle having an elongated extrusion port that extrudes a single type of food material.

It is front explanatory drawing of the extrusion apparatus 1 provided with the skin material supply apparatus 10 which concerns on the 1st Embodiment of this invention. It is a partial detailed explanatory view of the extrusion apparatus 1 shown in FIG. It is AA sectional arrow explanatory drawing of FIG. It is a detailed explanatory view of the skin material supply device 10 in FIG. It is explanatory drawing which showed schematically rotation operation | movement of the rotor 15 of the skin material supply apparatus 10 which concerns on the 1st Embodiment of this invention. It is a line graph which showed the division weight of skin material WA. It is explanatory drawing of the extrusion apparatus 1 provided with the skin material supply apparatus 10 which concerns on the 2nd Embodiment of this invention, FIG. 7 (A) is an upper surface explanatory drawing which used the partial cross section of the extrusion apparatus 1, and figure. 7 (B) is a front explanatory view taken along arrow BB in FIG. 7 (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Extruder 10 Outer material supply apparatus 11 Outer material hopper 11C Pump side recessed part 11D Outlet side flow path 13 Outer material pump (vane pump)
13A Measuring chamber 13B Supply section 15 Rotor 16 Vane 17 Cam member 20 Inner packaging material supply device 24B Outlet side flow channel 25 Rotor 26 Vane 30 Superposition nozzle 40 Cover cutting device 50 Conveyor device 60 Control unit 61 Operation panel 62 Control device 63 Drive gear 64 Driven gear 65 Pulse encoder 67 Sensor 68 Proximity switch D (D1, D2, D3) Rotation angle R1, R2 Arrow WA Outer material WB Inner packaging material WC Stick food dough WD Divided dough (encapsulated food)
M1-M5 control motor

Claims (2)

In the method of continuously supplying the food material accommodated in the hopper to the outlet side flow path by the vane pump , each of the plurality of vanes provided at equal intervals in the rotor of the vane pump has the food material as the outlet side flow path. When moving the supply section to be supplied, the rotational speed of the rotor is changed at a reference rotational speed and a high speed range with respect to the reference rotational speed, and the variable speed rotation is repeated for each of the plurality of vanes. A method for supplying food materials characterized by the above. In the supply device including a vane pump that supplies the food material to the outlet-side flow path and a control unit that controls driving of the vane pump, the control unit detects the rotation angle of the rotor included in the vane pump. A supply section in which each of the plurality of vanes provided at equal intervals on the rotor of the vane pump supplies food material to the outlet-side flow path. A food material supply apparatus, characterized in that control is performed so that the rotational speed is changed in a high speed range with respect to the rotational speed, and the speed change control can be repeatedly controlled for each of the plurality of vanes.

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