JP2004269007A - Bag feeding means for packing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide bag feeding means for a packing machine, which eliminates an idle station having no packing bag fed thereto, to thereby achieve a continuous feeding of the packing bags. <P>SOLUTION: The packing machine P is set up by rotating a rotary body having a number of pairs of grips g mounted thereon in a manner intermittently stopping at each of a plurality of stations, and gripping the packing bags fed by the bag feeding means in a hanging manner by each pair of the grips. The bag feeding means 10, 110 are each arranged so as to cope with at least two stations, and the bag feeding means are operated such that the packing bag a on a feeding table 15 is sucked by a sucker 12 of a rocking arm 11 to be delivered to a swivel arm 13, and that the packing bag lifted by the rotary arm is clamped by a pair of upper clamping pieces 14 to be fed from the clamping pieces 14 to the grips g one by one. According to the packing machine P, the bag feeding means 10, 110 are controlled such that their bag feeding operations are interlocked with each other, and therefore the packing bags are continuously fed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bag supplying means for a rotary or linearly movable packaging machine.
[0002]
[Prior art]
As a bag supply means of a conventional automatic packaging machine, two bag supply cassettes are arranged side by side in one bag supply section, and while the bag supply is performed by one of the bag supply cassettes, the other on the side where the packaging bag is lost. The bag supply cassettes are alternately replenished by manually replenishing the bag supply cassettes with the bag supply cassettes, and when one of the bag supply cassettes is exhausted, switching to the other bag supply cassette to perform bag supply. A structure in which a packaging bag is continuously supplied to the opposite side of the grip by being moved is used. Japanese Patent Application Laid-Open No. H6-115661 discloses an "automatic bag-table changing apparatus" having this kind of structure.
[0003]
[Problems to be solved by the invention]
In the above-described conventional bag supply device, when the packaging bag of one of the two bag supply cassettes is lost and the bag is switched to another bag supply cassette, some switching time is required. It is undeniable that only two or three empty stations are not supplied. As a result, packaging cannot be performed for the empty station, so that the packaging efficiency is reduced.
[0004]
An object of the present invention is to provide a bag supply means of a packaging machine capable of continuously supplying packaging bags without an empty station to which the packaging bags are not supplied.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 is to intermittently stop a rotating body provided with a large number of grip pairs or a moving body provided with a single grip pair at a plurality of stations by an intermittent driving unit. The packaging bag supplied by the bag supply means is moved so as to be gripped in a suspended manner by the pair of grips, and after the packing bag is filled with an object to be packaged by the filling means, the bag mouth is sealed by the sealing means. In the packaging machine described above, the bag supply means is installed so as to correspond to at least two stations, and the bag supply means is turned by sucking the packaging bag on the supply table by the suction cup of the swing arm. The packaging bag lifted by the swiveling arm is clamped by a pair of clamping pieces arranged above, and the packaging bags are fed one by one from the clamping piece pair to the grip pair. The packaging bag is supplied to the grip pair by performing automatic control so that the supplying operation of the packaging bag by one of the supplying units and the supplying operation of the packaging bag by the other supplying unit are linked. It is characterized in that it is configured to supply continuously.
[0006]
In order to achieve the same object, the invention described in claim 2 is the bag supply means of the packaging machine according to claim 1, wherein the bag supply means is installed so as to respectively correspond to two bag supply stations, In one bag supply station, the supply table is arranged on the virtual center line of the grip pair so that the supply direction of the packaging bags coincides, and in the other bag supply station, the supply table is parallel to the supply table of one bag supply station. While disposing the other supply stand, the pair of clamping pieces is provided rotatably in the horizontal direction in accordance with a predetermined angular interval between the bag supply stations, and the packaging bag sandwiched by the pair of clamping pieces is viewed from a plane. The grip is rotated by the predetermined angle and supplied to the grip pair in a facing position.
[0007]
Function and effect of the present invention
(Invention of claim 1)
The bag supplying means corresponds to at least two stations, respectively, and when a packaging bag of any of the two bag supplying means is exhausted, it is detected by a sensor and automatically transmitted to the other bag supplying means. Can be switched. The supply of the packaging bag to the grip pair is performed continuously without interruption.
[0008]
In each bag supply means, the packaging bag on the supply table is sucked by the suction cup of the swing arm and delivered to the turning arm. Next, the packaging bag lifted by the swing arm is once clamped by the upper clamping piece pair, and the packaging bags are fed one by one from the clamping piece pair to the grip pair.
[0009]
(Invention of claim 2)
For example, if the rotary packaging machine has 10 stations, an angle interval of 36 ° is generated between the two bag feeding stations when viewed from a plane. For this reason, the pair of clamping pieces provided rotatably in the horizontal direction according to the angle rotates the packaging bag received from the turning arm by an angle of 36 ° when viewed from a plane, and then grips the packaging bag. Supplied in a facing position. Other functions are the same as those described in the first aspect of the present invention.
[0010]
According to the bag supplying means of the packaging machine, the bag supplying means is made to correspond to at least two stations, respectively, and the supply operation of the packaging bag by one of the bag supplying means and the supplying operation of the packaging bag by the other bag supplying means are performed. By performing automatic control so as to cooperate, the packaging bags can be continuously and efficiently supplied. This eliminates empty stations to which the packaging bags are not supplied, thereby contributing to an improvement in the packaging capacity of the packaging machine.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of the rotary packaging machine, FIG. 2 is a side view including the bag feeding device and its periphery, and FIG. 3 is a rear view including the bag feeding device and its periphery.
[0012]
The packaging machine to which the present invention is applied is a rotary type or a linear moving type packaging machine. Here, a case where the present invention is applied to a rotary type packaging machine will be described. The rotary packaging machine P shown in FIG. 1 uses a rotating body provided with a large number of grip pairs g as a bag supply station (a), (b), a bag opening station (c), an idle station (d), and a bag opening. Opening station (e), filling station (f), idle station (g), printing station (h), sealing station (g), cooling / product discharging station (nu), intermittently stop and move every 10 stations Then, at the bag supply station (a) or (b), the packaging bag a supplied by the bag supply device 10 or the bag supply device 110 is gripped in a hanging manner with the bag opening upward by the grip pair g, and the filling station ( After the packing bag (a) is filled with the article to be packed by the filling means (not shown) in (f), the bag mouth is sealed by the sealing means 50 in the sealing station (R). Is a schematic configuration for discharging the product out of the machine cooling and the product discharge station at (j) and the sealing portion is cooled.
[0013]
A bag supply device 10 is installed at the bag supply station (A), and a bag supply device 110 is installed at the bag supply station (B). Since the bag feeding device 10 and the bag feeding device 110 have substantially the same configuration, the structure of one bag feeding device 10 will be mainly described.
[0014]
As shown in FIG. 2, the bag supply device 10 sucks and separates the packaging bags a stacked on the supply table 15 one by one from above by the suction cups 12 provided at the free ends of the pair of swing arms 11. It is delivered to a pair of revolving arms 13 rotatably supported by stands 3 and 4 erected on the machine base 1, and the packaging bag a lifted by the arm 13 is provided to move back and forth. It is configured to repeat a series of operations of once being held by the holding piece pair 14 and then being supplied to the front grip pair g.
[0015]
The base 16 of the supply table 15 is disposed on the machine base 1 with the upper surface 16a being horizontal, and four support rods 17 are vertically mounted on the lower part 16b of the supply base 15 through the machine base 1. Reference numeral 18 denotes a pair of left and right guides attached to the base 16 for regulating the width direction of the packaging bag a. Reference numeral 19 denotes a guide attached to the machine base 1 for positioning the front end of the packaging bag a in the longitudinal direction. .
[0016]
The lower ends of the support rods 17 are fixed to an X-shaped support base 20 when viewed from above. A guide bar 21 vertically suspended from the center of the support base 20 is loosely fitted to a box 26 of an elevating mechanism 25 provided below the machine base 1 so as to be vertically movable. The box 26 incorporates a pinion 27 driven by a motor device 28, and the pinion 27 is provided so as to mesh with a rack (not shown) formed on the guide bar 21.
[0017]
In the bag supply device 10 having the above-described configuration, when the packaging bags a stacked on the supply table 15 with the bag opening at the top are consumed one by one from the top and slightly decreased, a sensor (not shown) detects this. Then, the pinion 27 is driven and rotated by the motor device 28 of the elevating mechanism 25, so that the supply table 15 is automatically controlled to be raised to a predetermined height.
[0018]
Further, the bag feeding device 10 and the other bag feeding device 110 installed in the bag feeding station (b) have basically the same configuration. There is an angular spacing of 36 ° from the station (FIG. 1). For this reason, in the bag feeding station (a), as shown in FIG. 3, a vertical axis 6 is provided on the horizontal rod 5 extended to the stands 3 and 4 so as to be freely rotatable in the horizontal direction. The lever 7 attached to the section is provided so as to support the horizontal shaft 14a to which the upper end of the pair of sandwiching pieces 14 of the bag feeding device 10 is fixed. In the bag supply device 10, the rod 8 is moved forward and backward by a drive mechanism (not shown) to rotate the vertical axis 6 by an angle of 36 °, and then the packaging bag a sandwiched by the pair of clamping pieces 14 is gripped. It is provided so that the pair can be supplied in a facing position.
[0019]
Further, regarding the other bag feeding device 110, the reference numerals assigned to the bag feeding device 10 are described in the drawings as the same components as those in the hundreds, and detailed description is omitted.
[0020]
The supply table 115 of the bag supply device 110 is arranged on the virtual center line v of the pair of grips g so that the supply direction of the packaging bag a is the same.
[0021]
Next, the operation of the bag feeding means of the packaging machine of the present invention having the above-described configuration will be described. For example, it is assumed that the bag supply device 10 is operating at the bag supply station (a). The packaging bag a on the supply table 15 is sucked by the suction cup 12 of the swing arm 11 and delivered to the turning arm 13. Next, the packaging bag a lifted by the swivel arm 13 is once clamped by the upper clamping piece pair 14, and the clamping piece pair 14 rotates about the longitudinal axis 6 to move the packaging bag to the grip pair. Send them one by one.
[0022]
Then, when the packaging bag a of the bag supply device 10 is consumed and is exhausted, it is detected by a sensor (not shown) and automatically switched to the bag supply device 110 installed in the bag supply station (b). Then, at the bag supply station (b), the supply of the packaging bag a to the grip pair g is continued without interruption. After the switching to the bag supply device 110, the packaging bag a is manually replenished to the bag supply device 10 having no packaging bag a. Thus, when the packaging bag a of the bag feeding device 110 is consumed and exhausted, the switching to the bag feeding device 10 is automatically performed again. By configuring such a series of supply operations to be repeated, there is no generation of an empty station at least due to the work of switching bags.
[0023]
In this embodiment, as the bag supply means, the bag supply devices 10 and 110 having an up-and-down structure are described. However, the bag supply device may be a conveyor-type bag supply device. As an example of a conveyor-type bag feeding device, the one according to the present application is disclosed in Japanese Patent Publication No. 8-25541.
[0024]
As described above, the bag supply means of this packaging machine is provided with at least two bag supply means corresponding to each of the bag supply stations, and one of the bag supply means and the other of the bag supply means. By performing automatic control so as to link with the supply operation, the packaging bags can be supplied continuously and efficiently.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a rotary packaging machine. FIG. 2 is a side view including a bag feeding device and its surroundings. FIG. 3 is a rear view including a bag feeding device and its surroundings.
P: rotary packaging machine (a), (b): bag supply station g: grip pair v: virtual center line a: packaging bag 1: machine base 10, 110 ..Bag feeding devices (bag feeding means)
11, 111 ... swing arm 12, 112 ... suction cup 13, 113 ... swivel arm 14, 114 ... sandwiching piece pair 15, 115 ... supply table 21, 121 ... guide bar 25, 125 ... elevating mechanism 28, 128 ... motor device 50 ... sealing means

Claims (2)

A rotating body provided with a large number of grip pairs or a moving body provided with a single grip pair is intermittently stopped at a plurality of stations by an intermittent driving means and moved, and the packaging bag supplied by the bag supply means is moved to the grip pair. In a packaging machine that is provided so as to be gripped in a hanging manner, and the packaging bag is filled with an object to be packaged by filling means, and then the bag mouth is sealed by sealing means,
The bag supply means is provided so as to correspond to each of at least two stations. For the bag supply means, the packaging bag on the supply table is sucked by the suction cup of the swing arm and delivered to the swing arm. The packaging bag lifted by the above is clamped by the pair of clamping pieces arranged above, and the packaging bags are provided one by one from the clamping piece pair to the grip pair, and one of the bag supply means is provided. By automatically controlling the supplying operation of the packaging bag by the above and the supplying operation of the packaging bag by the other bag supplying means in coordination, the packaging bag is continuously supplied to the grip pair. Bagging means of the packaging machine. The bag supply means is provided so as to correspond to each of two bag supply stations. In one of the bag supply stations, the supply table is arranged on the virtual center line of the grip pair so that the supply direction of the packaging bags coincides with each other. At the other bag supply station, the other supply table is arranged in parallel with the supply table of the one bag supply station, and the pair of sandwiching pieces can be freely rotated in the horizontal direction according to a predetermined angular interval between the bag supply stations. The packaging bag sandwiched between the pair of clamping pieces is rotated by a predetermined angle when viewed from a plane, and is supplied to the grip pair in a facing position. Bag supply means for packaging machines.

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