JP2011079534A - Bag manufacturing and filling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag manufacturing and filling apparatus capable of attempting matching with speed-up on a bag manufacturing machine side by correcting unevenness of falling-down speed of an article to be filled regardless of the position of a metering unit, and corresponding to furthermore speed-up and efficiency by increasing in the metering unit. <P>SOLUTION: Tea leaves T as the article to be filled fallen down from each metering unit 15 of a metering apparatus 3 are conveyed forcibly by belt conveying means 21 and 23 and fall down into a delivering hopper 25 at the central part. Below the delivering hopper 25, a rotational transferring means 7 equipped with a rotating body 41 having a recessed part 63 for storing on the outer peripheral face is provided. The tea leaves T from the delivering hopper 25 is rotated and transferred under a condition stored in the recessed part 63 for storing, and is discharged at a position rotated at approximately 90&deg;, and is fed into a chute member 65 of a bag manufacturing machine 9. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a bag making and filling apparatus for producing a product by filling a filling material such as tea leaves while producing a bag by an ultrasonic sealing method or the like, such as a tea bag.

As this type of bag making and filling apparatus, for example, the one described in Patent Document 1 by the present applicant is known. As a device configuration, a weighing device is provided in the upper part of the device body, and the weighed material is dropped through a cylindrical chute member extending in the vertical direction, and the vertical seal portion and the lower horizontal seal portion are already provided. After being formed into a bag shape and filled in a packaging material positioned below the chute member and fed a predetermined amount, an upper lateral seal portion is formed and separated.
The packaging material is sent in a cylindrical state covering the outer surface of the chute member, and simultaneously with the formation of the upper horizontal seal portion of the previous bag, the lower horizontal seal portion of the next bag is formed and It is possible to drop and fill the weighed objects to be filled, and by repeating this, tea bags and the like can be produced continuously.

  As shown in FIG. 5, the weighing device has a configuration in which a plurality of weighing units K1 to Kn including a weighing hopper and a load cell are arranged in parallel in a substantially horizontal direction, and a predetermined amount to be filled that is measured by each weighing unit. Objects are dropped into the funnel-type transport hopper H by their own weights, collected at the central portion, and put into the chute member.

JP 2008-150071 A

As described above, a system in which a plurality of weighing units are arranged side by side is adopted from the viewpoint of improving the production efficiency of bag filling and filling, but has a problem related to a natural drop system by its own weight.
That is, as shown in FIG. 5, the filling material falling from the weighing unit K5 located at the center falls linearly at the shortest distance and reaches the lower end opening, but is located away from the center in the horizontal direction. For example, since the filling material falling from the weighing unit K1 contacts the inclined surface of the transport hopper H and slides down while receiving contact friction with the inclined surface, the arrival time at the lower end opening is delayed.
The non-uniformity and delay of the drop speed due to the position of the weighing unit hinders the speeding up of the bag making machine located below the weighing device, and the advantage of having a large number of weighing units arranged in parallel cannot be utilized. was there.
When trying to increase the number of weighing units in order to increase the number of bags made per unit time to further increase the speed and efficiency, the larger the width dimension W, the larger the deviation of the drop time and the above problem Become prominent.

  The present invention has been made in view of such a current situation, and it is possible to correct unevenness of the falling speed of the filling object regardless of the position of the weighing unit and to achieve matching with high speed on the bag making machine side. An object of the present invention is to provide a bag making and filling apparatus that can cope with higher speed and efficiency by increasing the number of weighing units.

  In order to achieve the above object, the invention according to claim 1 is provided with a weighing device in which a plurality of weighing units are arranged side by side in a substantially horizontal direction, and a predetermined amount of an object to be filled measured by each of the weighing units. It is dropped by its own weight and put into a chute member that extends in the vertical direction while being collected at the central part, and the filling material is filled into a bag-like packaging material that is located below the chute member and has a lower lateral seal sealed. After that, in the bag making and filling device which forms the upper side seal portion on the packaging material and completes one bag filling, and continuously performs this, it is provided below the weighing device, It is a bag making and filling device characterized by having belt conveying means for carrying the dropped specific filling material onto the central portion and dropping it so that it can be thrown into the chute member.

  A second aspect of the present invention is the bag making and filling apparatus according to the first aspect, wherein the belt conveying means is disposed substantially symmetrically to the left and right with the central portion interposed therebetween. is there.

  A third aspect of the present invention is the bag making and filling apparatus according to the second aspect, wherein the two belt conveying means are driven by one drive source.

  Invention of Claim 4 has the accommodation recessed part which accommodates the to-be-filled material which fell from the said belt conveyance means temporarily in the bag making filling apparatus as described in any one of Claims 1-3, The said The bag-making and filling apparatus is characterized by having rotational transfer means for rotating and transporting the object to be filled in the accommodating recess and opening the object to be filled in the chute member.

  According to a fifth aspect of the present invention, in the bag making and filling apparatus according to the fourth aspect of the present invention, the rotary transfer means has a rotating body that rotates in a vertical plane, and the receiving recesses are spaced apart in the circumferential direction in the rotating body. The bag making and filling device is characterized in that a plurality of the bag making and filling devices are formed.

  According to a sixth aspect of the present invention, in the bag making and filling apparatus according to the fifth aspect, the rotating body has a disk shape having a thickness in the direction of the rotation axis, and the receiving recess is formed on an outer peripheral surface of the rotating body. The bag making and filling device is opened in a state rotated by approximately 90 ° from a state in which an object to be filled is accommodated.

ADVANTAGE OF THE INVENTION According to this invention, the malfunction resulting from the difference in the drop speed by the difference in the drop position of the to-be-filled object in a weighing | measuring apparatus can be eliminated, and the speed-up and efficiency improvement of bag making filling can be implement | achieved.
In addition, according to the present invention, since the difference in the drop speed is corrected by forced conveyance, the structure is rotated and transferred to the chute member, so that the filling process can be performed at a higher speed on the bag making machine side. Matching with accuracy can be achieved, and further increase in speed and efficiency can be realized.

It is a general | schematic front view of the bag making filling apparatus which concerns on one embodiment of this invention. It is the same outline side view. It is a perspective view of the principal part of a rotation transfer means. It is a disassembled perspective view of the principal part of a rotation transfer means. It is a figure for demonstrating the conventional problem.

A bag making and filling apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 (viewed from the front of the apparatus) and FIG. 2 (viewed from the side of the apparatus) show an outline of the overall configuration of the bag making and filling apparatus 1. The bag making and filling device 1 includes a weighing device 3 arranged at the upper part of the device main body 2, a forced conveying device 5 that is positioned below the weighing device 3 and forcibly conveys an object to be filled that has dropped from the weighing device 3, and a forced Rotation transfer means 7 located below the transfer device 5 and a bag making machine 9 are provided.
The weighing device 3 has a configuration in which a plurality of weighing units 15 including a weighing hopper 11 and a load cell 13 for weighing an object to be filled such as tea leaves put in the weighing hopper 11 are arranged in parallel in a substantially horizontal direction. ing. The weighing hopper 11 has an opening / closing door 11a whose upper part is rotatably supported by a hinge structure. When the opening / closing door 11a is opened by an opening / closing means (not shown), a weighed object is put into each weighing unit 15. It is put into a common transport hopper 17. Unlike the conventional funnel type, the transport hopper 17 according to the present embodiment is formed in a rectangular shape having a very short transport distance.

The forced conveying device 5 includes a pair of belt conveying means 21 and 23 arranged symmetrically with respect to a partition wall 19 provided at a position corresponding to the central portion of the weighing device 3, and these belt conveying means 21, And a delivery hopper 25 provided below the center of the belt conveying means 21 and 23.
Each of the belt conveying means 21 and 23 includes a gear 27, a pulley 29 fixed to the rotation shaft of the gear 27, pulleys 31 and 33, and a conveying belt 35 wound around these pulleys. The conveyance belt 35 conveys the filling object obliquely downward at a slanting angle at a position away from the central portion so that the filling material does not jump out to the other side with a conveyance inertia force. It is stretched so that it can be transported.
The gears 27 are engaged with each other, and the gear 27 in the belt conveying means 23 on the right side is rotationally driven via a timing belt 39 wound around a pulley 37 fixed to the rotating shaft of the motor 24. That is, the two belt conveying means 21 and 23 are simultaneously driven by one driving source (motor 24).

The lump or agglomerated tea leaves T that fall from the weighing unit 15 located away from the center of the weighing device 3 are conveyed by the conveying belt 35 at a speed that compensates for the distance disadvantage, and the central part And is put into the delivery hopper 25.
Even if the transported tea leaves T try to jump out by the transport inertial force, the tea leaves T hit the partition wall 19 and fall to the delivery hopper 25.
Note that the opening timing of each weighing unit 15 is controlled so that the conveyance of the tea leaves T does not coincide with the conveyance by the belt conveying means 21 and 23 at the central portion.
The tea leaves T falling from the weighing unit 15 located at the central portion of the weighing device 3 fall directly on the delivery hopper 25 without being conveyed by the belt conveying means 21, 23.

As shown in FIG. 3, the rotation transfer means 7 temporarily stores the filling material dropped on the delivery hopper 25 by a rotating body 41 that rotates in a vertical plane, and transfers and rotates the rotating body 41 by rotation. After the body 41 is rotated by approximately 90 °, the body 41 is inserted into the chute member described later from the discharge port 44.
The configuration of the rotary transfer means 7 will be specifically described with reference to FIG.
The rotation transfer means 7 is fitted to a rotation base 43 inserted and supported by a support shaft (not shown), a pulley 45 fixed to one end side in the axial direction of the rotation base 43, and the other end side of the rotation base 43. It is composed of a cylindrical rotating body main body 47 to be fixed, a case 49 for housing the rotating body 41 composed of the rotating base 43 and the rotating body main body 47, a cover 51, and the like.

The rotation base 43 includes a fixed portion 53 that is inserted and fixed to the support shaft, and a rotation portion 55 that is provided between the fixed portion 53 via a bearing structure. The rotating portion 55 has a flange portion 58 for fixing the rotating body main body 47.
A plurality of screw holes 57a are formed in the flange portion 58, and the rotating body main body 47 is integrally fixed to the rotating portion 55 with screws (not shown) through the plurality of screw insertion holes 47a after fitting.
The pulley 45 is integrally fixed to the rotation base 43 with screws (not shown) through the screw insertion holes 45 a and screw holes (not shown) formed in the fixing portion 53 of the rotation base 43.

The case 49 is supported by a device side plate (not shown), and an opening 57 corresponding to the delivery hopper 25 is formed on the upper surface thereof, and an opening 59 corresponding to the discharge port 44 is formed at a position rotated approximately 90 ° therefrom. ing.
A peripheral wall 61 exists between the opening 57 and the opening 59 of the case 49, and the pop-out of the filling material during rotation transfer is suppressed. That is, the peripheral wall 61 functions as a lid for the housing recess 63 at the time of rotational transfer.
Four receiving recesses 63 are formed on the outer peripheral surface of the rotating body 47 at intervals of 90 °.
As shown in FIG. 2, each accommodating recess 63 has a shape extending in a horizontal square in a state of being positioned at a receiving position with respect to the delivery hopper 25. In addition, the vertical wall 63a is provided on the rear end side in the rotation direction, and the front end side has an open shape. Each receiving recess 63 has a length of a dimension L in the horizontal direction, and stores tea leaves T falling from the delivery hopper 25 even if there is a slight timing error, and is brought to the vertical wall 63a side by rotational force. It can be rotated and transferred.
The rotating body 41 is rotationally driven by a motor 62 as a driving source. The rotational force is transmitted by a timing belt 66 wound around a pulley 64 and a pulley 45 fixed to the rotation shaft of the motor 62.

The tea leaves T that have fallen on the delivery hopper 25 are accommodated in the accommodation recess 63 of the rotating body 41 located below the delivery hopper 25 in synchronization with a predetermined fall timing.
The accommodated tea leaves T are transferred by the rotation of the rotating body 41 and discharged to the discharge port 44 by a rotational force at a position rotated approximately 90 ° in the counterclockwise direction. The rotation timing of the rotator 41 is controlled so that the position of the housing recess 63 is aligned with the continuous fall timing of the tea leaves T conveyed by the belt conveying means 21 and 23.
The discharged tea leaves T are put into the chute member 65 of the bag making machine 9 connected to the discharge port 44.

Although not shown in the drawings, the bag making machine 9 performs vertical sealing by performing packaging material feeding means that superimposes the packaging material S that can be thermally welded while feeding it in the longitudinal direction, and vertical sealing of the packaging material fed by the packaging material feeding means. A vertical seal means for forming a seal portion, and an upper horizontal seal portion and a lower horizontal seal portion are formed by performing horizontal seal on the upper and lower portions sandwiching the filling portion in the packaging material on which the vertical seal portion is formed. It has a well-known configuration with a transverse sealing means.
The tea leaves T put into the chute member 65 are already filled with a vertical seal portion and a lower horizontal seal portion into a bag-like packaging material positioned below the chute member 65 and sent by a predetermined amount. Thereafter, an upper lateral seal portion is formed and separated.
The packaging material is fed in a cylindrical state covering the outer surface of the chute member 65, and the lower side seal portion on the lower side of the next bag is formed simultaneously with the formation of the upper side seal portion of the front side bag, and the next stage bag. It is possible to drop and fill the weighed filling material with respect to, and by repeating this, it is possible to continuously produce tea bags 67 and the like.

As described above, in the bag making and filling apparatus 1 according to the present embodiment, the tea leaf T in which the unevenness of the dropping speed due to the difference in the dropping position of the measuring device 3 is corrected by the two belt conveying means 21 and 23 is the rotational transfer means. 7 is rotated and transferred in a direction perpendicular to the conveying direction by the belt conveying means 21, 23.
The tea leaves T that have fallen from the belt conveying means 21 and 23 may be guided to the chute member 65 as they are, but the drop speed is likely to decrease due to air resistance and friction in the guide path.
The tea leaves T dropped from the delivery hopper 25 are continuously received by the accommodating recesses 63 which are rotated and moved into the chute member 65 while being rotated and transferred, whereby the timing of the tea leaves T falling from the belt conveying means 21 and 23 is uneven. Can be corrected and can be accelerated and put into the chute member 65, and the charging timing of the weighed tea leaves T with respect to the speeding up of the bag making machine 9 can be matched with high accuracy.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, in the above-described embodiment, the housing recess 63 is provided on the outer peripheral surface of the rotating body 41, but may be provided on the side surface.

DESCRIPTION OF SYMBOLS 1 Bag making filling apparatus 3 Weighing apparatus 7 Rotation transfer means 15 Weighing unit 21, 23 Belt conveyance means 24 Motor 41 as a drive source Rotating body 63 Accommodating recess 65 Chute member S Packaging material T Tea leaf as filling material

Claims (6)

A chute member provided with a weighing device in which a plurality of weighing units are juxtaposed in a substantially horizontal direction, and extending in the vertical direction while dropping a predetermined amount of an object to be weighed by each weighing unit by its own weight and collecting it in a central part And filling the bag-like packaging material positioned below the chute member and having the lower lateral seal portion sealed, and then forming the upper lateral seal portion on the packaging material. In a bag making and filling device that completes one bag and performs this continuously,
It is provided below the weighing device, and has belt conveying means for carrying the specific packing dropped from each weighing unit and carrying it to the central part and dropping it so as to be able to be thrown into the chute member. Bag making and filling equipment. The bag making and filling device according to claim 1,
The bag making and filling apparatus, wherein the belt conveying means is arranged substantially symmetrically on the left and right with the central portion interposed therebetween. The bag making and filling device according to claim 2,
The bag making and filling apparatus, wherein the two belt conveying means are driven by one driving source. In the bag making and filling apparatus according to any one of claims 1 to 3,
An object concave portion for temporarily accommodating an object to be filled that has fallen from the belt conveying means, the object to be filled at a position where the object can be rotated and transferred in a state in which the object to be filled is accommodated in the accommodation recess and can be charged into the chute member. A bag making and filling device comprising a rotary transfer means for opening the bag. The bag making and filling device according to claim 4,
The bag making and filling apparatus, wherein the rotation transfer means has a rotating body that rotates in a vertical plane, and a plurality of the accommodating recesses are formed in the rotating body at intervals in the circumferential direction. The bag making and filling device according to claim 5,
The rotating body has a disk shape having a thickness in the direction of the rotation axis, and the receiving recess is formed on the outer peripheral surface of the rotating body, and is opened in a state rotated approximately 90 ° from the state in which the filling object is stored. A bag making and filling apparatus characterized by the above.

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