JP2011190104A - Subdivided raw material supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a raw material supply device capable of supplying a raw material constituted by an uneven granule or powder to an automatic packaging machine only for a predetermined amount while securing high speed raw material supply operation inexpensively. <P>SOLUTION: The raw material supply device 1 of the automatic packaging machine includes a hopper 3 for storing the uneven particle-like raw material 30, a screw-shaped conveying mechanism arranged just under the hopper 3, and a spiral coil-shaped conveying mechanism arranged just under the screw-shaped conveying mechanism. The screw-shaped conveying mechanism operates so as to roughly unravel the particle-like raw material 30 dropping from the hopper 3, and the spiral coil-shaped conveying mechanism operates so as to stir and finely unravel the particle-like raw material 30 dropping from the screw-shaped conveying mechanism and to align the height of the particle-like raw material 30 conveyed in the inside of the spiral coil-shaped conveying mechanism in a predetermined height by applying the level action. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention belongs to the technical field of an automatic packaging machine that automatically fills and wraps raw materials (contents) using a wrapping film (packaging material). The present invention relates to a raw material supply apparatus that sends a specified amount to an automatic packaging machine.

  Conventionally, in an automatic packaging machine that automatically fills and wraps the raw material (contents) of particulate matter and powder, the raw material is temporarily stored in the hopper of the automatic packaging machine and is stored in accordance with the bag making operation. After the raw material is weighed to a preset filling amount, this raw material is supplied to the inside via the input port of the finished packaging bag, and then the input port is sealed and separated into individual packaging bags.

  In such a raw material supply device of an automatic packaging machine, an auger supply mechanism constituted by a screw conveyor or the like is used to supply a raw material composed of uniform particles and powder to the automatic packaging machine in a predetermined amount. Had been deployed.

  However, when sending a specified amount of non-uniform particulate material (for example, green leaves such as tea leaves or dried vegetables) that is not a raw material composed of such uniform particles or powders to an automatic packaging machine In the conventional auger supply mechanism, a non-uniform gap is generated between the raw materials, the conveyance amount value fluctuates greatly, and a correct raw material supply operation cannot be realized.

  For this reason, in the case of non-uniform particulate raw materials, a supply device that combines a transport mechanism such as a linear feeder or a pipe feeder and a measuring mechanism that measures the transported amount each time is provided.

JP 2005-8282 A Japanese Patent Laid-Open No. 08-226845

Such a conventional raw material supply apparatus has the following problems.
(1) In the weighing type supply device, since the accurate amount is individually measured each time, the raw material supply speed is slow, and as a result, the overall packaging operation is slowed down due to the slow operation speed of the supply device. Problems will occur.

(2) In addition, since the metering mechanism is incorporated in the raw material supply apparatus, the mechanism becomes complicated and the cost of the entire raw material supply apparatus is greatly increased, resulting in an economic problem.

  The present invention has been made to solve such problems, and ensures a high-speed raw material supply operation at a low price and a raw material composed of non-uniform particles and powders by a predetermined amount. An object of the present invention is to provide a raw material supply device that can supply an automatic packaging machine.

  (1) The raw material supply apparatus of the present invention made to solve the above-described problems includes a hopper that stores non-uniform particulate raw materials, a screw-shaped transport mechanism disposed immediately below the hopper, and the screw shape. And a spiral coil-shaped transport mechanism disposed immediately below the transport mechanism.

(2) Moreover, the screw-shaped transport mechanism of the raw material supply apparatus of the present invention includes a cylindrical member provided with an inlet for receiving the particulate raw material from the hopper, and a dropping port for feeding the particulate raw material from the screw-shaped transport mechanism, It is composed of a rotating screw conveyor member fitted in the cylindrical member, a motor member for rotating the screw conveyor member, and a motor control circuit for controlling the rotation amount of the motor member according to the raw material supply amount.
The spiral coil-shaped transport mechanism of the raw material supply apparatus of the present invention is a U-shape provided with an inlet for receiving the particulate raw material falling from the screw-shaped transport mechanism and a dropping port for feeding the particulate raw material to the automatic packaging machine. A feed cylinder member, a rotating spiral coil member fitted in the U-shaped feed cylinder member, a columnar member provided with a gap near the center of the spiral coil member, and the spiral coil member and the column A motor member that rotates the member and a motor control circuit that controls the rotation amount of the motor member according to the amount of raw material supplied.

(3) Moreover, the screw conveyor member of the screw-shaped conveyance mechanism of the present invention operates to loosen and loosen the particulate material falling from the hopper,
The spiral coil member of the spiral coil-shaped transport mechanism operates to stir the particulate raw material falling from the screw-shaped transport mechanism to break up more finely,
The columnar member of the spiral coiled transport mechanism operates to apply a scraping action to the particulate raw material transported inside the U-shaped feed cylinder member of the spiral coiled transport mechanism so as to align it to a certain height. .

  In the raw material supply apparatus described in (1), (2), and (3) above, a two-stage particulate raw material unraveling means using a screw conveyor member of a screw-shaped transport mechanism and a helical coil member of a helical coil-shaped transport mechanism; As a result of disposing the scraping means by the cylindrical member of the spiral coil-shaped transport mechanism, the non-uniform particulate raw material that is transported in the spiral coil-shaped transport mechanism and falls on the chute of the automatic packaging machine that is disposed immediately below is sufficiently It has been adjusted so that it will be a constant transport amount while being unraveled.

  (4) Moreover, the drop port of the U-shaped feed tube member of the present invention has an oblique shape.

  (5) Moreover, the slanting shape of the drop port of the present invention is formed in a direction intersecting with the plurality of lower chord windings of the helical coil member.

  In the U-shaped feed cylinder member of the raw material supply apparatus described in (4) and (5) above, a drop opening is provided so as to obliquely traverse the plurality of lower chord windings of the spiral coil member, and as a result, it falls into the chute The particulate raw material to be cut off can be prevented, and the supply amount accuracy in the raw material supply apparatus is improved.

As described above, according to the present invention, the following remarkable effects can be obtained.
(1) A raw material supply device that supplies a predetermined amount of the particulate raw material to the automatic packaging machine can be provided by adjusting the constant raw material amount while sufficiently unraveling the non-uniform particulate raw material.

  (2) Further, since the structure is simple and there is no mechanism for individually weighing, a high-speed supply operation can be realized, the cost of the raw material supply device is reduced, and the cost of the entire packaging system can be reduced.

It is a front view of the raw material supply apparatus 1 which implemented this invention. It is a top view of the raw material supply apparatus 1 which implemented this invention. It is a right view of the raw material supply apparatus 1 which implemented this invention. It is an operation | movement conceptual diagram in the helical coil-shaped conveyance mechanism of the raw material supply apparatus 1 which implemented this invention. It is a front view of the other raw material supply apparatus 101 which implemented this invention. It is a top view of the other raw material supply apparatus 101 which implemented this invention. It is an operation | movement conceptual diagram regarding the U-shaped feed cylinder member 70 of the other raw material supply apparatus 101 which implemented this invention. It is the schematic showing the relationship between the rotation amount of the screw conveyor member in the raw material supply apparatus 1 which implemented this invention, and the other raw material supply apparatus 101, and the fall amount of a particulate raw material.

  Embodiments of a raw material supply apparatus in an automatic packaging machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a raw material supply apparatus 1 embodying the present invention, FIG. 2 is a top view of the raw material supply apparatus 1 embodying the present invention, and FIG. 3 is a right side of the raw material supply apparatus 1 embodying the present invention. FIG. Here, in order to make the inside of the raw material supply apparatus 1 visible in FIG. 2, it is expressed in a state in which no raw material is contained, and when referring to the operation description, the raw material is stored as in FIG. 1. Shall. FIG. 3 shows a part of the raw material supply apparatus 1 as a cross section for easy understanding.

  Initially, the structure regarding the raw material supply apparatus 1 which implemented this invention is demonstrated. As shown in FIG. 1 to FIG. 3, 2 is a casing of the raw material supply apparatus 1, 3 is a hopper in which a non-uniform particulate raw material 30 is stored, and 6 is a cylinder of a screw-shaped conveyance mechanism arranged immediately below the hopper 2. Reference numeral 8 denotes a rotating screw conveyor member fitted inside the cylindrical member 6, reference numeral 4 denotes a motor member that rotates the screw conveyor member 8, reference numeral 14 denotes a spur gear attached to a drive shaft of the motor member 4, 13 Is a spur gear attached to the rotating shaft 11 of the screw conveyor member. The spur gear 14 and the spur gear 13 are engaged with each other to transmit the driving force of the motor member 4 to the screw conveyor member 8.

  7 is a U-shaped feed cylinder member of the spiral coil-shaped transport mechanism arranged immediately below the cylindrical member 6 of the screw-shaped transport mechanism, 9 is a rotating spiral coil member fitted inside the U-shaped feed cylinder member 7, Reference numeral 5 denotes a motor member that rotates the helical coil member 9. Reference numeral 15 denotes a drive shaft of the motor member 5 and a rotary shaft 12 of the helical coil member 9, and the driving force of the motor member 5 is transmitted to the helical coil member 9. A coupling member, 10 is a cylindrical member provided with a gap in the vicinity of the center of the spiral coil member 9, and 20 is a chute of an automatic packaging machine provided immediately below the U-shaped feed cylinder member 7 of the spiral coil-shaped transport mechanism. It is.

  Reference numeral 40 denotes a motor control circuit for controlling the amount of rotation of the motor member 4 and the motor member 5 and adjusting the amount of raw material supplied to the chute 20 of the automatic packaging machine.

Next, operation | movement of the raw material supply apparatus 1 which implemented this invention shown in FIG. 1 thru | or FIG. 3 is demonstrated below.
(1) A non-uniform particulate raw material 30 is stored inside the hopper 3, and the particulate raw material 30 inside the hopper 3 receives a gravity force from the inner bottom port of the hopper 3 to the cylinder of the screw-shaped conveyance mechanism. It is sent to the member 6.

  (2) The particulate raw material 30 fed into the cylindrical member 6 is conveyed leftward as shown in FIG. 1 by the screw conveyor member 8 that rotates by receiving the driving force of the motor member 4 and is fed out from the hopper. You will first unravel the big chunks. Note that the gap between the screw conveyor member 8 and the cylindrical member 6 is a very small value that makes the rotational movement of the screw conveyor member 8 smooth. Here, the particulate raw material 30 is roughly cut by the screw conveyor member 8. Both of them operate so as to surely carry leftward.

  (3) The left end of the cylindrical member 6 of the screw-shaped transport mechanism is provided with a dropping port that communicates with the inside of the U-shaped feed cylinder member 7 of the spiral coil-shaped transport mechanism disposed immediately below, and the particulate raw material 30 is gradually fed into the U-shaped feed cylinder member 7 from the drop port.

  (4) The particulate raw material 30 fed into the U-shaped feed cylinder member 7 is conveyed rightward as shown in FIG. 1 by the spiral coil member 9 that rotates by receiving the driving force of the motor member 5, and the spiral coil. The member 9 is sufficiently stirred. The gap between the helical coil member 9 and the U-shaped feed cylinder member 7 is open to a predetermined value as shown in FIG. Two operations are performed: stirring and unraveling more finely and transporting.

  (5) The unraveled particulate raw material 30 conveyed through the inside of the U-shaped feed cylinder member 7 is scraped off by the columnar member 10 provided with a gap in the vicinity of the center of the U-shaped feed cylinder member 7. Under the action, it is aligned at a certain height and further conveyed to the right by the helical coil member 9. The gap between the spiral coil member 9 and the cylindrical member 10 is open to a predetermined value as shown in FIG. Two of the conveying operations by the coil member 9 are performed.

  (6) As a result, the particulate raw material 30 that is transported to the right end of the U-shaped feed cylinder member 7 and falls into the chute 20 of the automatic packaging machine that is disposed immediately below is proportional to the amount of rotation of the helical coil member 9. To come. That is, the raw material supply apparatus 1 of the present invention drops a necessary amount of the particulate raw material 30 into the chute 20 when the particulate raw material 30 is filled in the packaging bag manufactured by the automatic packaging machine. Thus, the rotation of the motor member 5 is controlled, and when the automatic packaging machine is not in a filling operation, the rotation of the motor member 5 is stopped so that the particulate raw material 30 does not fall into the chute 20.

  (7) The motor member 4 that rotationally drives the screw conveyor member 8 is also rotationally driven in accordance with the filling operation of the automatic packaging machine, and stops rotating when the automatic packaging machine is not filling. It is controlled. That is, the motor member 4 that rotationally drives the screw conveyor member 8 is surely transported so that the particulate raw material 30 transported inside the U-shaped feed cylinder member 7 does not overflow and is not interrupted. The rotation is controlled so that the state can be maintained, and the amount adjustment of the raw material supplied to the automatic packaging machine is accurately executed by the rotation control of the motor member 4 and the motor member 5.

  FIG. 4 is a conceptual diagram of the operation in the helical coiled conveyance mechanism of the raw material supply apparatus 1 embodying the present invention. As shown in FIG. 4, here, the U-shaped feed cylinder member 7 of the spiral coil-shaped transport mechanism, the rotating spiral coil member 9 fitted in the U-shaped feed cylinder member 7, and the spiral coil member 9 The columnar member 10 provided with a gap in the vicinity of the center, the rotating shaft 12 of the helical coil member 9, and the non-uniform particulate raw material 30 conveyed inside the U-shaped feed cylinder member 7. It is shown enlarged.

  (1) The non-uniform particulate raw material 30 fed into the U-shaped feed cylinder member 7 is conveyed from the left to the right in the drawing while being unraveled more finely by the rotational operation of the helical coil member 9. In the middle of this conveyance, the non-uniform particulate raw material 30 is subjected to a scraping action due to the rotational movement of the columnar member 10 disposed on the same rotating shaft 12 as the helical coil member 9, and is aligned at a certain height. ing.

  (2) That is, the non-uniform particulate raw material 30 before reaching the cylindrical member 10 is subjected to the unraveling action by the helical coil member 9 to be in a disjoint height state, and in this disengaged height state, the drawing is performed. Transported from left to right.

  (3) Then, when the non-uniform particulate raw material 30 being conveyed reaches the position of the rotating cylindrical member 10, the raw material having a height higher than the height at which the cylindrical member 10 is disposed is played as shown in the figure. It deletes so that it may fly, and performs a scraping operation.

  (4) That is, the non-uniform particulate raw material 30 that has passed through the place where the cylindrical member 10 is disposed is aligned with the height of the gap distance from the bottom portion of the U-shaped feed cylinder member 7 to the cylindrical member 10. As a result, the particulate raw material 30 that is transported to the right end of the U-shaped feed cylinder member 7 and falls into the chute 20 of the automatic packaging machine that is disposed immediately below is proportional to the amount of rotation of the helical coil member 9. It becomes like this.

  And the raw material supply apparatus 1 which implemented this invention is the property (viscosity, hardness, hygroscopicity) which the size of the particle | grains of the nonuniform particulate raw material 30 itself, the distribution width of a nonuniform state, and a particulate raw material have. The dimensions of the constituent members of the hopper, the screw-shaped transport mechanism, and the spiral coil-shaped transport mechanism are selected according to the fragility and the like.

  In particular, the various factors employed by the constituent members of the helical coil-shaped transport mechanism have a direct influence on the supply amount of the raw material fed into the automatic packaging machine from the raw material supply apparatus 1 embodying the present invention and the fluctuation range of this supply amount. The original value. That is, the transport amount of the particulate raw material 30 moving in the U-shaped feed cylinder member 7 of the spiral coil transport mechanism is proportional to the rotation amount of the motor member 5 that rotates the spiral coil member 9 and the column member 10. In addition to this, it is also affected by the ratio of stirring and transport by the helical coil member 9 when moving in the U-shaped feed cylinder member 7, the state of scraping by the cylindrical member 10 of the spiral coil-shaped transport mechanism, and the like.

  Therefore, the influence of the constituent members will be described along the following three operations exhibited by the helical coil-shaped transport mechanism described so far, namely, the unraveling operation, the transport operation, and the scraping operation.

  (1) First, the coil wire diameter and pitch interval of the helical coil member 9 will be described. The smaller the coil wire diameter of the helical coil member 9 and the wider the pitch interval of the coil wires, the higher the rate of unwinding operation, and the larger the coil wire diameter of the helical coil member 9, The smaller the pitch interval, the higher the rate of transport operation. Therefore, in the case of the particulate raw material 30 in which the non-uniform state is large, the ratio of the stirring operation is increased, and in the case of the particulate raw material 30 that is more uniform, the stirring operation is reduced to reduce the ratio of the conveying operation. The increased coil wire diameter and pitch interval of the helical coil member 9 are employed.

  (2) Next, as the diameter of the columnar member 10 increases, the gap between the columnar member 10 and the U-shaped feed tube member 7 becomes narrower, and more scraping operations are performed. If the diameter dimension of the columnar member 10 becomes too large, the transfer operation of the particulate raw material 30 moving in the U-shaped feed cylinder member 7 will be affected. It is determined in consideration of the grain size of the raw material 30. That is, the larger the particle size of the particulate raw material 30 is, the larger the gap between the cylindrical member 10 and the U-shaped feed cylinder member 7 is, and thus the diameter dimension of the cylindrical member 10 is reduced.

  (3) Next, the longer the cylinder dimension in the horizontal direction of the cylindrical member 10, the longer the time for performing the cutting operation, and a more stable cutting operation can be performed. For this reason, in the case of the filling operation which needs to give more scraping operation and make it an accurate supply amount, a member having a long horizontal cylinder dimension of the columnar member 10 is adopted.

  As described above, the raw material supply apparatus according to the present invention described with reference to FIGS. 1 to 4 includes a hopper that stores non-uniform particulate raw materials, a screw-shaped conveyance mechanism disposed directly below the hopper, and the screw-shaped conveyance. The screw-shaped conveyance mechanism operates to loosen the particulate material falling from the hopper roughly, and the helical coil-shaped conveyance mechanism is composed of a helical coil-shaped conveyance mechanism arranged immediately below the mechanism. It operates to stir the particulate raw material falling from the screw-shaped transport mechanism to break it up more finely, and applies a chopping action to the particulate raw material transported inside the spiral coil-shaped transport mechanism to make it constant It works to align with the height of.

  For this reason, the particulate raw material thrown into the automatic packaging machine from the raw material supply apparatus of the present invention comes to be proportional to the amount of rotation of the helical coil member of the helical coiled conveyance mechanism, and this helical coil member is rotated. The amount adjustment of the raw material supplied to the automatic packaging machine can be accurately executed by the rotation control of the motor member.

  FIG. 5 is a front view of another raw material supply apparatus 101 embodying the present invention, and FIG. 6 is a top view of another raw material supply apparatus 101 embodying the present invention. First, the configuration of another raw material supply apparatus 101 that implements the present invention will be described.

  As shown in FIGS. 5 and 6, 2 is a casing of the raw material supply apparatus 101, 3 is a hopper in which the non-uniform particulate raw material 30 is stored, and 6 is a cylinder of a screw-shaped transport mechanism arranged immediately below the hopper 2. Reference numeral 8 denotes a rotating screw conveyor member fitted inside the cylindrical member 6, reference numeral 4 denotes a motor member that rotates the screw conveyor member 8, reference numeral 14 denotes a spur gear attached to a drive shaft of the motor member 4, 13 Is a spur gear attached to the rotating shaft 11 of the screw conveyor member. The spur gear 14 and the spur gear 13 are engaged with each other to transmit the driving force of the motor member 4 to the screw conveyor member 8.

  70 is a U-shaped feed cylinder member of the spiral coil-shaped transport mechanism disposed immediately below the cylindrical member 6 of the screw-shaped transport mechanism, 9 is a rotating spiral coil member fitted inside the U-shaped feed cylinder member 70, Reference numeral 5 denotes a motor member that rotates the helical coil member 9. Reference numeral 15 denotes a drive shaft of the motor member 5 and a rotary shaft 12 of the helical coil member 9, and the driving force of the motor member 5 is transmitted to the helical coil member 9. A coupling member, 10 is a cylindrical member provided with a gap in the vicinity of the center of the spiral coil member 9, and 21 is a chute of an automatic packaging machine provided immediately below the U-shaped feed tube member 70 of the spiral coil-shaped transport mechanism. It is. Reference numeral 40 denotes a motor control circuit for controlling the amount of rotation of the motor member 4 and the motor member 5 and adjusting the amount of raw material supplied to the chute 21 of the automatic packaging machine.

That is, compared with the configuration of the raw material supply apparatus 1 shown in FIGS. 1 to 3, there are two differences in the configuration of the other raw material supply apparatus 101 as follows.
(1) The dropping port at the right end in the figure of the U-shaped feed cylinder member 70 of the helical coil-shaped transport mechanism has an oblique shape when viewed from above.

  (2) Along with the slanting opening of the U-shaped feed cylinder member 70, the lateral width of the chute 21 of the automatic packaging machine disposed immediately below the U-shaped feed cylinder member 70 is wide. It has become.

  For this reason, the operation of the other raw material supply apparatus 101 according to the present invention excluding the above two points is the same as the operation of the raw material supply apparatus 1 according to the present invention shown in FIGS. Omitted, the operation of different parts of the other raw material supply apparatus 101 shown above will be described.

  FIG. 7 is an operation concept diagram relating to a U-shaped feed tube member 70 of another raw material supply apparatus 101 embodying the present invention. As shown in FIG. 7, this is the right end portion of the U-shaped feed cylinder member 70 of the spiral coil-shaped transport mechanism and the lower chord winding of the rotating spiral coil member 9 fitted inside the U-shaped feed cylinder member 70. The non-uniform particulate raw material conveyed by the part and the lower chord winding part of the helical coil member 9 is shown enlarged.

  FIG. 8 is a schematic diagram showing the relationship between the amount of rotation of the screw conveyor member and the amount of fall of the particulate raw material in the raw material supply apparatus 1 and the other raw material supply apparatus 101 embodying the present invention.

  (1) The non-uniform particulate raw material fed into the U-shaped feed cylinder member 70 is conveyed in the right direction from the left in the drawing while being unraveled more finely by the rotating operation of the helical coil member 9. For example, the particulate material 54 is conveyed by the lower string winding 94 of the helical coil member, and the particulate material 53 is conveyed by the lower string winding 93 and is conveyed by the lower string winding 92. It is the particulate material 52 that is conveyed by the lower chord winding 91.

  (2) Here, the particulate raw material that has passed through the slanted drop port of the U-shaped feed cylinder member 70 naturally falls into the chute 21 of the automatic packaging machine and becomes a raw material that is filled in the packaging bag. 7, the particulate material falling into the chute 21 in proportion to the amount of rotation of the helical coil member 9 is conveyed by the particulate material conveyed by the lower chord winding 93 and the lower chord winding 92. The total of the particulate raw material being carried and the particulate raw material being conveyed by the lower string winding 91.

  (3) That is, the particulate material that has already fallen into the chute 21 according to the rotation of the helical coil member 9 is the particulate material 33 conveyed by the lower string winding 93 and the particles conveyed by the lower string winding 92. The particulate raw material 32 and the particulate raw material 31 conveyed by the lower string winding 91, and the particulate raw materials conveyed by the three lower string windings are dropped into the chute 21 without interruption.

  (4) On the other hand, the U-shaped feed cylinder member 7 of the raw material supply apparatus 1 shown in FIG. 1 to FIG. 3 employs a rectangular drop port. The particulate raw material falling inside falls for every quantity conveyed by the lower chord winding, and does not fall during the non-carrying blank period generated between the lower chord windings. That is, in the raw material supply apparatus 1 shown in FIGS. 1 to 3, a part of the amount of the particulate raw material falling into the chute 20 from the U-shaped feed cylinder member 7 is interrupted, or a situation in which the fall amount fluctuates occurs. It will be. As a result, as shown in FIG. 8, the amount of rotation of the screw conveyor member (the amount of rotation of the helical coil member 9) and the amount of fall of the particulate raw material (the amount falling into the chute 20) change stepwise. The supply amount accuracy in the supply device 1 is lowered.

  (5) As described in (1) to (3) above, the U-shaped feed cylinder member 70 of the raw material supply apparatus 101 shown in FIGS. 5 to 7 employs an oblique drop port. In this case, since the particulate raw material falling into the chute 21 from the U-shaped feed cylinder member 70 drops the particulate raw material conveyed by the three lower chord windings into the chute 21 without interruption, FIG. As shown, the rotation amount of the screw conveyor member (rotation amount of the helical coil member 9) and the fall amount of the particulate raw material (amount falling in the chute 21) can be maintained in a proportional state. The supply amount accuracy in the raw material supply apparatus 101 is improved.

  (6) Here, the oblique shape of the drop port of the U-shaped feed cylinder member 70 shown in FIGS. 5 to 7 is formed in a direction intersecting the three lower chord windings of the spiral coil member 9, and this The crossing angle may be a value around 90 degrees. That is, the particulate raw material that falls into the chute 21 by providing the dropping port of the U-shaped feed cylinder member 70 so as to obliquely cross the three lower chord windings 91, 92, 93 having a certain spiral angle. Can be prevented from being interrupted.

  The embodiment of the present invention is an example for embodying the present invention, and has a corresponding relationship with the invention-specific matters in the claims, but is not limited thereto. Various modifications can be made without departing from the scope of the invention.

  That is, the drop port of the U-shaped feed tube member 70 shown in FIGS. 5 to 7 is provided so as to obliquely cross the three lower chord windings 91, 92, 93, but is not limited thereto. Instead, it is provided so as to cross a plurality of lower chord windings diagonally.

DESCRIPTION OF SYMBOLS 1,101 Raw material supply apparatus 2 Housing 3 Hopper 4, 5 Motor member 6 Cylindrical member 7, 70 U-shaped feeding cylinder member 8 Screw conveyor member 9 Spiral coil member 10 Column member 11 Rotating shaft of screw conveyor member 8 12 Spiral coil member 9 Rotating shafts 13, 14 Spur gears 15 Coupling members 20, 21 Chute of automatic packaging machine 30 Non-uniform particulate material 40 Motor control circuit 91, 92, 93, 94 Lower chord winding

Claims (5)

  It comprises a hopper for storing non-uniform particulate raw materials, a screw-shaped transport mechanism disposed immediately below the hopper, and a helical coil-shaped transport mechanism disposed directly below the screw-shaped transport mechanism. Raw material supply device. The raw material supply apparatus according to claim 1,
The screw-shaped transport mechanism includes a cylindrical member provided with an inlet for receiving the particulate raw material from the hopper, a dropping port for delivering the particulate raw material from the screw-shaped transport mechanism, and a rotation fitted in the cylindrical member. It is composed of a screw conveyor member, a motor member that rotates the screw conveyor member, and a motor control circuit that controls the rotation amount of the motor member in accordance with the raw material supply amount.
The spiral coil-shaped transport mechanism includes a U-shaped feed cylinder member provided with an inlet for receiving the particulate raw material falling from the screw-shaped transport mechanism, and a drop outlet for feeding the particulate raw material to the automatic packaging machine, A rotating helical coil member fitted in a U-shaped feed cylinder member, a cylindrical member provided with a gap near the center of the helical coil member, and a motor member for rotating the helical coil member and the cylindrical member And a motor control circuit that controls the rotation amount of the motor member in accordance with the raw material supply amount. The raw material supply apparatus according to claim 2,
The screw conveyor member of the screw-shaped transport mechanism operates to loosen and loosen the particulate raw material falling from the hopper,
The helical coil member of the helical coil-shaped conveyance mechanism operates to stir the particulate raw material falling from the screw-shaped conveyance mechanism to break up more finely,
The columnar member of the spiral coil-shaped transport mechanism operates so that the particulate raw material transported inside the U-shaped feed cylinder member of the spiral coil-shaped transport mechanism is scraped and aligned to a certain height. The raw material supply apparatus characterized by performing. In the raw material supply apparatus according to any one of claims 2 and 3,
2. A raw material supply apparatus according to claim 1, wherein the U-shaped feed tube member has a slanting opening. The raw material supply apparatus according to claim 4,
2. The raw material supply apparatus according to claim 1, wherein the slanting shape of the drop port is formed in a direction intersecting with a plurality of lower chord windings of the helical coil member.