JP2003026122A - Inner bag feeder for bag-in-box packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner bag feeder for a bag-in-box packaging machine with which a bag or a continuum of bags can be reliably carried and the bags can be correctly and reliably separated at a joint. SOLUTION: The inner bag feeder 3 holds a spout S of a bag B at the head of a continuum W by a spout holding member 113 of a first carry means 111 to carry from a first feeding position to a second feeding position. Both sides of a joint between bags at the first feeding position and the second feeding position are pinched and held by first upper and lower bag pressing members 143, 144, 151 and 152 and second upper and lower bag pressing members 153, 154, 161 and 162, and a pressing rod 165 is raised to have the two bags separated. The spout S of the separated bag B is pinched by a spout holding member 183 of a second carry means 181 to carry from the second feeding position to a transfer position. A spout of a bag at the head of a preliminary continuum is pinched by a spout holding leaf spring of a preliminary continuum feed means 71 to make it standby at a standby position. When the previous continuum is used up, it is carried to the first feeding position by activation of an air cylinder 83.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an inner bag supply device for a so-called back-in-box packaging machine. More specifically, in the back-in-box packaging machine, the inner bag connecting body configured so that a plurality of inner bags with spouts are connected in series is sequentially separated for each bag to hold the bags in the filling and packaging machine. The present invention relates to an inner bag supply device for supplying to a transfer means.

[0002]

2. Description of the Related Art A so-called back-in-box packaging is used in which an inner bag made of resin or the like is provided with a spout and, for example, a beverage or the like is filled and then stored in an outer box made of, for example, cardboard. This packaging is for packaging a large volume of beverage, for example, 5 liters, 10 liters, and further 20 liters, and a resin-made inner bag with a spout is filled with a predetermined amount of beverage, which is formed of, for example, cardboard. Store and package in an outer box. In order to take out the beverage inside, the spout is used with the inner bag stored in the outer box with the spout protruding from the outer box, which is often used for normal business purposes.

From the viewpoint of manufacturing cost, the inner bag used for such back-in-box packaging is manufactured as a continuous body of a plurality of bags, that is, as an inner bag connecting body formed in a band shape or a web shape. It is often done.

US Pat. No. 4,283,901 discloses a back-in-box packaging device using such a connecting body, in which the inner bag connecting body is sequentially cut into individual bags, and then the bags are filled with the contents. It is configured to fill things.
By the way, in this apparatus, the inner bag connected body is transferred by an automatic back feeder, and this back feeder uses a vacuum gripping feed conveyor. However, since the inner bag is made of resin and is soft and easily deformed, vacuum leakage easily occurs when sucked by the vacuum conveyor, and the transfer may not be stable, which is remarkable as the operating speed of the machine increases. become. There is also a cost problem such as installation of vacuum pumps and piping. Furthermore, the structure is complicated and there are problems in cleaning and maintenance.

On the other hand, JP-A-57-175508 and Japanese Patent Publication No. 6-522 disclose that the spout portion of the inner bag connecting body is held and the connecting body is moved linearly, and stopped in an intermediate step. The figure shows a configuration in which an object is filled and cut after each bag is cut. However, after filling the contents, the inner bag is inflated, and it is difficult to cut between the inflated bags that are adjacent to each other. It may occur.

Further, in any of the above-mentioned prior arts, when the packaging process of one inner bag connecting body set in the machine into all the bags is completed, the packaging machine is temporarily stopped and the next connecting body is set. , The operation is restarted, and there is a problem in productivity.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. It is possible to stably move the bag and the connecting body of the bag, and to accurately cut the connecting portion between the bags. It is an object of the present invention to provide an inner bag supply device for a bag-in-box packaging machine that can be reliably performed.

Further, by setting a spare connecting body, it is possible to continuously operate the machine without stopping the machine even if all the bags of one connecting body are used. It is also an object to provide a device.

[0009]

In order to solve the above problems, in the inner bag supply device according to the present invention, a first delivery position, a second delivery position, and a delivery position are provided along the bag transfer path. It was set. Then, the bag supply device includes a holding member that holds the spout portion of the bag of the connecting body formed of a plurality of continuous bags, and the first bag of the connecting body is first delivered in the connected state. First transfer means reciprocating between the first delivery position and the second delivery position to transfer from the first delivery position to the second delivery position; the first delivery position and the second delivery means.
The bag holding means is provided between the first sending position and the second sending position, and the bag holding means holds the bags respectively positioned at the sending positions to prevent movement of the bags and releases the bags when the bags are transferred.
The bag separated from the connecting body is provided with a separating means for separating a connecting portion between the bag located at the delivery position and the bag located at the second delivery position, and a holding member for holding the spout portion of the bag. A second transfer means that reciprocates between the second delivery position and the delivery position so as to transfer the bag from the second delivery position to the filling and packaging device, and at least the first delivery position. And a bag supporting means for supporting the lower surface of the bag, the bag supporting means being arranged at the second delivery position.

According to the present invention, since the transfer means provided with the holding member for holding the spout portion of the bag is used, the bag and the connected body of the bag can be reliably transferred. Moreover, since the bag supporting means is provided, the posture of the bag can be stably maintained in a desired state at the time of transfer and at the time of separating the connecting portion, and the transfer and separation work can be performed accurately and reliably. Further, since the bag holding means is provided, the bag can be reliably held in the delivery position, and the separating operation can be performed easily and surely.

In one embodiment, the bag holding means is
The bags are arranged in the front and back with the separating means sandwiched therebetween in the transport direction of the bag, and both sides of the bag are sandwiched and held from above and below. As a result, it is possible to prevent the bag from being displaced and flexed at the time of separation, and to ensure reliable separation.

In one embodiment, the first and second transfer means each include a servomotor, and the holding members of the first and second transfer means are moved by the respective servomotors. Thereby, the initial position and stroke of each holding member can be changed, and it is possible to easily cope with the case where the size of the bag to be used is different.

In one embodiment, the bag supply device further comprises a pre-connector supply means having a holding member for holding the spout portion of the leading bag of the pre-connector. The holding member holds the spare connecting body at the standby position and, if desired, transfers the leading bag from the standby position to the first delivery position in the connected state so as to have a standby position and a first delivery position. It is configured to be able to reciprocate between. As a result, even if one connecting body is used up, continuous operation is possible without stopping the machine.

In one embodiment, the preliminary connecting body supplying means comprises a preliminary connecting body supporting member for supporting the lower surface of the bag of the preliminary connecting body arranged near the standby position, and the preliminary connecting body supporting member is provided. It is configured to be movable between a support position for supporting the lower surface of the bag and a retracted position retracted to the outside in the width direction of the bag. As a result, the preliminary connecting body can be smoothly transferred from the standby position to the first delivery position, and the next preliminary connecting body can be immediately prepared. [Detailed Description of the Invention]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, specific embodiments of the present invention will be described, but the following description is merely an example, and the scope of the present invention is not limited thereto.

First, with reference to FIGS. 1 to 3, a schematic structure of an entire back-in-box packaging machine 1 using the inner bag supply device of the present invention will be described. 1 to 3 are a front view, a plan view, and a partial cross-sectional side view of the packaging machine 1, respectively.

This packaging machine 1 is roughly classified into an inner bag supply device 3 which will be described in detail later, and a bag B received from the inner bag supply device, filled with the contents of the bag B, and further filled with an outer box K. (FIG. 3) and a filling and packaging device 5 to be stored. As the bag B, a spout having a known shape, that is, a bag to which a spout S is attached is used. Further, the bag B is supplied to the inner bag supply device 3 in a state of a plurality of continuous web-shaped connecting bodies W, which is separated into each one as described later and sequentially filled and packed. Supply to the device 5. In addition,
Perforations are made at the boundary between two adjacent bags B. As is well known, the spout S is integrally attached to a bag B, and a cylindrical portion located outside the bag B is formed with three flanges which are vertically separated from each other. Therefore, two grooves are formed between the spout S and the filling and packaging apparatus. It is known that the bag B is transferred by using this flange or groove at 5. Bag B is
This is also a known cap for spouts and can be used as cap C.
Is supplied in a state of being attached, and the cap C is once removed in the filling device 5 before the contents are filled and then attached to the spout S again after the filling. Since these are not directly related to the present invention, detailed description will be omitted.

The inner bag supply device 3 will be described in detail later. Reference numeral 51 is a stand of the device 3, 54 is a side frame right, and 56 is a sub side frame right. A roller conveyor 7 is arranged next to the device 3 so that the box 9 containing the connected body W of the bag B therein is sequentially directed to the device 3 to a predetermined position. The connecting body W shown on the right side in FIG. 1 is currently in use, and the one on the left is set in the device 3 in preparation for the next use, which will also be described later.

The filling and packaging apparatus 5 includes a machine base 11 and a frame 13 attached to the machine base 11. A stand 15 is erected on the machine base 11, and a hollow shaft 17 is installed in the stand 15.
The rotary table 19 is attached to the upper end of the rotary table 19 so as to rotate integrally therewith. This turntable 19
In the present embodiment, eight well-known bag holding members 20 are attached in the vicinity of the outer periphery thereof at equal angular intervals. A nozzle rotation shaft 21 extends inside the hollow shaft 17, and two nozzle support arms 23 extend radially from the upper end thereof at predetermined angular intervals, and each of the nozzle support arms 23 holds a nozzle 25 at its tip. Reference numeral 27 is a hose for feeding the contents to be filled from a tank (not shown) to the nozzle. A bag bottom support 29 corresponding to each bag holding member 20 is attached so as to rotate together with the table 19.

In the filling and packaging apparatus 5 of this embodiment,
The table 19 intermittently rotates clockwise in FIG. 2, and eight stations S1 indicated by numbers on the bag bottom support 29 are shown.
Through S8. That is, at the station S1, the bags B separated one by one from the inner bag supply device 3 are received and held by the bag holding member 20 in a known manner, and the table 19
The bag B is transferred with the rotation of. While stopped at the station S2, the cap C attached to the spout S is removed. This detaching device is not directly related to the present invention, so its explanation is omitted.

Stations S3 to S5 are stations for filling contents. In this packaging machine 5, the contents of the two bags B are filled at the same time. That is,
When the first bag B moves to the station S3, the filling operation is not performed. Then the second bag B goes to station S3, and the first bag B goes to station S4.
To the corresponding filling nozzles 25, 2
5 comes down and is pressed against the spout to start filling the contents. The filling is continued while each bag B, B moves to the next station S5, S4, during which the rotary shaft 21 for the nozzle rotates together with the table 19 and the nozzle 2
5 and 25 are made to follow the movement of the corresponding bag B.
The first and second bags B and B are station S respectively.
5, the filling is completed after reaching S4, and the nozzles 25, 25
Returns to its original position.

Station S6 is a spare and does not perform any processing here. At the station S7, the previously removed cap C is attached to the spout S. Then, at the station S8, storage in the outer box K is performed. That is, the outer box K is sequentially transferred from the box supply conveyor 31 to the box transfer conveyor 33, and positioned by the box positioning device 35 at a position corresponding to the station S8. Then, the bag B is stored in the outer box K by the take-out device 37 and the boxing device 39 provided in the station S8, further transferred by the transfer conveyor 33 and delivered to the transfer conveyor 41. Since these have no direct relation to the present invention, detailed description thereof will be omitted.

Next, the inner bag supply device 3 of the present invention will be described with reference to FIGS. 4 is a cross-sectional front view of the device 3, FIG. 5 is a plan view with a partial cross section, and FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. Also, FIGS.
FIG. 9 is a partially enlarged view of a portion showing the pre-connecting body supplying means of FIGS. 4 and 5, and FIGS. 9 and 10 are partially enlarged views of portions showing the first and second transfer means and the separating means of FIGS. Is. In addition, in each drawing, in order to avoid obscuring the drawing, only members necessary for the description are shown. Further, since the bag B and the connecting body W are fed from left to right in FIGS. 4 and 5, for convenience, the left side is the upstream side or the rear side of the apparatus, the right side is the downstream side or the front side, and FIG.
In the description, the upper side is the left side and the lower side is the right side.

Reference numeral 51 designates left and right side frames 53, 5
A stand that supports 4 units, and four units are provided at predetermined positions in the left-right front-back direction of the device 3. These are connected to each other by beams 52 and are given rigidity. As shown in FIG. 6, the left and right side frames 53, 54 have a shallow U-shaped cross section, and are fixed to the upper surface of the stand 51 with their recesses facing the left and right sides, respectively. There is.
The stand 51 is further attached to the inner side surface of the stand 51 via left and right sub-side frames 55 and 56 via brackets 57 and 58 which may be formed separately from the ears or separately (see FIG. 6). Sub-side frame 55,
As shown in the drawing, 56 is located below the side frames 53 and 54.

The inner bag feeding device 3 is provided with the auxiliary connecting body feeding means 71, the first transferring means 111, the separating means 141 and the first connecting means which are supported and attached to the side frames 53 and 54 and the sub side frames 55 and 56 described above. The 2 transfer means 181 is provided in this order from the upstream side of the apparatus 3 to the downstream side. Then, the auxiliary connecting body supply means 71 transfers the connecting body W held in reserve from the standby position to the first delivery position, and the first transfer means 111 moves from the first delivery position to the second delivery position. The second bag transfer means 181 transfers the second transfer means 181 to the delivery position from the second delivery position, and the separating means 141 transfers the first bag B and the next bag between the first delivery position and the second delivery position. It is a means for separating the part from B.

First, the preliminary connecting body supplying means 71 will be described with reference to FIGS. Reference numeral 73 is a pair of spout holding plate springs, which are attached to the spout holding plate 75 so as to face each other and extend to the right side in the drawing. This leaf spring 73 is used for the box 9 on the roller conveyor 7 below.
The spout S of the first bag B of the spare connecting body W extending from (see FIG. 1) is clamped. That is, as described above, the spout is fitted into one of the two grooves formed in the spout, and the spout is sandwiched and held from both sides.

Reference numeral 77 is a slide arm, and this slide arm 77 has an L-shaped portion in a vertical plane (FIGS. 4 and 7), and the spout holding plate is provided at the rear end portion of the horizontal portion facing rearward. 75 is attached. And
As shown in FIGS. 5 and 8, there is a portion extending from the upper end of the vertical portion to the right side, and the slide member 79 is attached to the outer end portion thereof. Reference numeral 81 is a slide rail,
It is attached to the inner side surface of the right side frame 54 and extends in the front-rear direction. The slide member 79 fits on the slide rail 81 and can slide in the front-rear direction.

Reference numeral 83 is an air cylinder for moving the slide arm, which is attached to a mounting bracket 85 attached to the inner surface of the right side frame 54 at the front and rear of the cylinder. The rod 84 of the air cylinder 83 extends rearward, and its tip is connected to the slide arm 77. Therefore, when the air cylinder 83 expands and contracts, the slide arm 77 moves back and forth together with the holding plate 75 and the holding plate spring 73.

Reference numerals 87 and 88 (see FIGS. 5 and 8) denote the front side portion of the first bag B of the preparatory connecting body W at the standby position, which supports the connecting body W from below, as will be described later. It is a support guide plate that guides to. Support guide plate 87,
Reference numerals 88 and 88 respectively include first opening / closing fulcrum shafts 89 and 90 with respect to the shaft support members 91 and 92 attached to the side frames 53 and 54 through the fulcrum shafts.
Is rotatable between a position indicated by a virtual line and a position indicated by a broken line. Although not shown, stoppers are provided at both positions to prevent rotation beyond the respective illustrated positions.

Reference numerals 93 and 94 are support rods for supporting the rear side portion of the first bag B of the auxiliary connecting body W, which is also in the standby position, from below and guiding the connecting body W when it moves. It is rotatably supported by the shaft support members 97 and 98 via the fixed second opening / closing fulcrum shafts 95 and 96.
The first rotation fulcrum shafts 89, 90 and the second opening / closing fulcrum shafts 95, 96 respectively connect the connection levers 99, 100 and 101, 102 fixed to the connection rods 103,
By connecting with 104, it is possible to rotate integrally.

Further, the second opening / closing fulcrum shafts 95, 96
A connecting arm 105 and a cylinder supporting arm 106 are fixed to the shaft, and a support guide opening / closing air cylinder 107 is attached between the free ends of the connecting arm 105 and the cylinder supporting arm 106 as shown in the figure. Therefore, when the air cylinder 107 expands and contracts, the support guide plates 87 and 88 and the support guide rods 93 and 94 are simultaneously drawn.
5. Rotate between the position shown by the solid line and the position shown by the phantom line in FIG.

The spare connecting body W is attached manually, and the spout S of the leading bag B is clamped by the spout holding leaf spring 73. At this time, the support guide plates 87, 8
8 and the support guide rods 93 and 94 may be at the positions indicated by the solid lines, but it is easier to work by moving them to the positions indicated by the imaginary lines. It may be moved to the solid line position. Then, as described later, when all the previously supplied connecting bodies W are used and the leading bag B of the spare connecting body W is moved to the first delivery position, the support guide plates 87 and 88 and the support guides are provided. The rods 93 and 94 rotate to the position shown by the phantom line and retract to the outside in the width direction of the bag B, and the connecting body W thereof is in the state shown on the right side in FIG. Of course, in that case, the box 9 containing the rest of the articulation body is moved forward.

Referring now to FIGS. 4-6 and 9, 10.
The first transfer means 111 will be described. The first transfer means 111 sequentially moves the entire connecting body W sent from the standby position to the first sending position forward by a distance of one bag. That is, it reciprocates between the first delivery position and the second delivery position.

Reference numeral 113 designates a pair of first spout holding members arranged facing each other on the left and right, which is attached to the first chuck cylinder 115 and is opened and closed by the first chuck cylinder 115 to sandwich or open the spout S of the bag B. To do. The first chuck cylinder 115 includes the first transfer arm 11
It is attached to 7. The arm 117 extends rightward from the portion where the first chuck cylinder 115 is attached (FIGS. 5 and 10), then extends obliquely upward to the rear side, and then extends upward (FIGS. 4 and 9), and again to the right side. The first moving piece 119 is attached to the tip end of the first moving piece 119.
A female screw is engraved on the first moving piece 119.

Reference numeral 121 is a first servomotor, which is attached to the inner surface of the side frame 54. A first screw shaft 123 is connected to the output shaft so as to rotate integrally therewith, and a tip end thereof is supported by a first shaft support block 125. Reference numeral 126 is a moving piece guide rail, which is attached to the inner surface of the right side frame 54 and extends in the front-rear direction, along which the moving piece 119 can move. Therefore, depending on the direction in which the servo motor 121 rotates, the first transfer arm 117 moves forward and backward, and the first spout holding member 113 causes the first delivery position shown by the solid line in the figure and the second transfer of the bag described later. It reciprocates between itself and the second delivery position for delivery to the means 181.

The lower surface of the bag B from the vicinity of the support guide plates 87, 88 of the preliminary connecting body supplying means 71 to a position slightly forward of the tip of the first spout holding member 113 at the first delivery position. A first support plate 127 that supports and guides the side extends. First support plate 12
7 is attached to the sub-side frames 55 and 56. Also, a pair of first spout guide rails 129, 1 fitted in the groove of the spout from the left and right to guide the movement of the spout.
30 extends in the front-rear direction in a range that slightly exceeds the first support plate 127 in both front-rear end portions. This guide rail 12
9 and 130 are attached to spout guide rail attachment brackets 131a and 132a attached to the left and right sub-side frames 55 and 56, respectively (FIG. 6).
reference). As shown in FIG. 5, the guide rail 12
9 and 130 are widened on the rear side so that the spout can be easily engaged with the guide rails 129 and 130.

Next, the separating means 141 will be described. As described above, perforations are preliminarily formed at the boundary between the adjacent bags B of the connecting body W, and the bag B moved to the second delivery position.
And the next bag B that has moved to the first delivery position in accordance with the movement thereof are separated by the separating means 141 along the perforations.

Reference numerals 143 and 144 are first upper bag pressing members, which are attached to the left and right sub-side frames 55 and 56, respectively, and extend in the directions toward each other. The tip is located slightly inside the side edge of the bag B and slightly above the bag. In the front-rear direction, it is slightly behind the perforation, that is, near the front edge of the bag B at the first delivery position. Bag guides 145 and 146 are provided at the inner ends of the bags, respectively, and an inclined portion that extends obliquely rearward and upward from the front flat surface portion is formed.

Reference numerals 147 and 148 are first bag pressing air cylinders, which are attached to attachment plates 149 and 150 attached to the sub-side frames 55 and 56 (FIGS. 4 and 9). First lower bag pressing members 151, 152 are attached to the rod tips of the air cylinders 147, 148, and move upward when the air cylinders 147, 148 operate to move the above-mentioned first upper bag pressing member 143.
The bag B is sandwiched between 144 and held.

Next, reference numerals 153 and 154 are second upper bag pressing members, which are left and right sub-side frames 55 and 56.
Are attached to each other and extend toward each other. The tip is located slightly inside the side edge of the bag B and slightly above the bag. Further, in the front-back direction, it is slightly front side of the perforation described above, that is, near the rear edge of the bag B at the second delivery position. Bag guide portions 155 and 156 are provided at the inner ends thereof, respectively, and an inclined portion extending obliquely rearward and upward from a portion of the front flat surface is formed.

Reference numerals 157 and 158 are second bag pressing air cylinders, which are attached to attachment plates 159 and 160 attached to the sub-side frames 55 and 56. Second lower bag holding members 161 and 162 are attached to the rod tips of the air cylinders 157 and 158. When the air cylinders 157 and 158 operate, the second lower bag holding members 161 and 162 move upward to move to the aforementioned second upper bag holding members 153 and 154. The bag B is sandwiched between and held.

The mounting plates 159 and 160 are shown in FIGS.
As shown in FIG. 7, a portion extending obliquely downward and rearward and further vertically downward is formed from the portion where the air cylinders 157 and 158 are attached, and the connecting body separating air cylinders 163 and 164 are attached to the vertical portion. There is. A substantially U-shaped pressing rod 165 is attached to the tip of the rod. The pressing rod 165 is positioned such that the portion corresponding to the vertical straight portion of the “U” shape extends along the lower side of the perforation. Therefore, as described above, the first and second upper and lower bag pressing members 143, 144, 151, 152, 153, 154,
When both sides of the perforation line are sandwiched and held by 161 and 162, and the pressing rod 165 is moved upward, the front and rear bags B are separated along the perforation line.

A first support roller 167 and a second support roller 169, which are rotatably attached to the sub-side frames 55 and 56, are disposed on the front and rear sides of the pressing rod, and support the lower surface side of the bag B. It is supposed to guide you.

Next, the second transfer means 181 will be described. The second transfer means 181 is transferred to the second delivery position by the first transfer means 111 and separated from the connecting body W by the separation means 141 to become a single bag B, and the bag B of the filling and packaging apparatus 5 described above is removed. The bag is transferred to the bag holding member 20 at a delivery position. That is, it reciprocates between the second delivery position and the delivery position.

Reference numeral 183 denotes a pair of second spout holding members arranged facing each other on the left and right, which is attached to the second chuck cylinder 185 and is opened and closed by the action of the cylinders 185 to sandwich the spout S of the bag B. Or open. Second chuck cylinder 185
Are attached to the second transfer arm 187. The arm 187 extends leftward from the portion where the second chuck cylinder 185 is attached (FIGS. 5 and 10), then extends diagonally upward to the rear side, and then extends upward (FIG. 4, FIG.
9), extend to the left side again, and at the tip of the second moving piece 189
Is installed. A female screw is engraved on the second moving piece 189.

Reference numeral 191 is a second servo motor, which is attached to the inner surface of the left side frame 53. The second screw shaft 193 is connected to the output shaft so as to rotate integrally, and the tip end thereof is supported by the second shaft support block 195. Also, reference numeral 196 is the left side frame 5
3 is a moving piece guide rail that is attached to the inner surface of 3 and extends in the front-rear direction, along which the moving piece 189 can move. Therefore, the second transfer arm 187 moves forward and backward according to the direction in which the servomotor 191 rotates, and the second spout holding member 183 has the second delivery position shown by the solid line in the figure and the bag filling and packaging apparatus 5. The bag reciprocates between the bag holding member 20 and the handing position.

The second means extending from the position just downstream of the second lower bag holding members 161 and 162 of the separating means 141 to the front end position of the sub-side frames 55 and 56.
A support plate 197 is attached to the sub-side frames 55 and 56 so as to support and guide the lower surface side of the bag B. In addition, a pair of second spout guide rails 1 fitted in the grooves of the spout S from the left and right to guide the movement of the spout.
99 and 200 extend from the position slightly ahead of the rear end of the second support plate 197 to the position slightly beyond the front end of the second support plate 197. The guide rails 199 and 200 are provided on the left and right sub-side frames 55,
It is attached to the spout guide rail mounting brackets 131 and 132 which are respectively attached to 56 (see FIG.
See 6). Note that, as shown in FIGS. 5 and 10, the guide rails 199 and 200 are such that the edges of the guide rails 199 and 200 facing each other on the rear side spread away as they go rearward,
The spouts are easily and surely engaged with the guide rails 199 and 200. Further, the vicinity of the rear end portions of the guide rails 199 and 200 slightly inclines rearward and obliquely upward, and the vicinity of the rear end portion of the support plate 197 slightly inclines rearward and obliquely downward, but this is at the first delivery position. When the tip edge of the connecting body W moves to the second delivery position, the support plate 197 and the guide rails 199, 2
This is to make it enter between 00 and 00.

The operation of the inner bag supply device 3 configured as described above is as follows. First, the supply of the spare connecting body W will be described. The spout S of the leading bag B of the spare connecting body is clamped by the spout holding leaf spring 73 of the spare connecting body supplying means 71 as described above. Install. Then, the support guide plates 87 and 88 and the support guide rod 9
3, 94 are in the state shown by the solid line in FIG. That is, the top bag B of the connecting body W is supported from below by these members. The first connecting body W when the apparatus 3 is about to be operated is not attached to the preliminary connecting body supplying means 71, and the first bag B is first attached.
It may be attached to the spout holding member 113 of the transfer means 111.

When the last bag B of the previously supplied connecting body W is transferred to the second delivery position, the bag does not exist at the first delivery position. This is detected by an appropriate sensor (not shown), the air cylinder 83 for moving the slide arm of the pre-connector supply means 71 is actuated, the rod is contracted, and the slide arm 77 is moved forward, that is, moved to the right in FIGS. Let Thereby, the support guide plates 87, 8
8. While being guided by the support guide rods 93, 94,
The connecting body W moves, and the bag B at the head thereof is transferred to the first delivery position. At this time, the spout holding member 113 of the first transfer means 111 moves to the second delivery position, and the second transfer means 181 moves.
The spout holding member 183 is in the delivery position. Then, the support guide plates 87, 88 and the support guide rods 93, 94 are retracted to the retracted positions shown by phantom lines in FIG. That is,
The bag B is retreated to the outside of the bag B in the width direction. Then, the box 9 accommodating the connecting body W moves to a predetermined position on the conveyor 7, and the connecting body is moved to the first position as shown on the right side in FIG.
The support plate 127 is hung from the rear end of the support plate 127.

Next, the above-mentioned first and second bag holding air cylinders 147, 148, 157, 158 are operated,
The first upper bag pressing member 143, 144 and the first lower bag pressing member 151, 152 lead the new bag B of the connecting body W.
Near the front edge of the second upper bag pressing member 153, 154
And the second lower bag pressing members 161 and 162 sandwich and hold the vicinity of the rear edge of the last bag B of the front connecting body W. In this state, the rod of the air cylinder 83 extends and the slide arm 77 is retracted. Since the bag B is pressed as described above, the spout holding leaf spring 73 can be easily removed from the spout S of the bag B. As a result, the spare connecting body is ready for use. On the other hand, the spout holding member 113 of the first transfer means 111, which was in the second delivery position, is opened by the operation of the chuck cylinder 115, and the bag B which is being held is held.
The spout S is released and returned to the first delivery position by the operation of the first servo motor 121 in the opened state, then the holding member 113 is closed by the operation of the chuck cylinder 115, and the leading bag of the new connecting body W is opened. Hold the spout S of B. At this time, the spout holding member 183 of the second transfer means 181 in the delivery position also performs the same operation by the operation of the corresponding servo motor 191 and chuck cylinder 185, returns to the second delivery position, and returns to the previous connection body. Hold the last bag of spout. The separating means described above may be operated in this state, but in this embodiment, since the separating operation is unnecessary, it is not operated.

Next, the above-mentioned first and second bag pressing air cylinders 147, 148, 157 and 158 are operated to release the bag B held. The first servo motor 121
The first spout holding member 113 is moved by this, the connecting body W is moved by one bag, the first bag B is moved to the second delivery position, and the next bag B is moved to the first delivery position. . At this time, the second spout holding member 18
3 also moves from the second delivery position to the delivery position by the operation of the servo motor 191, and delivers the last bag B of the previous connecting body W to the bag holding member 20 of the filling and packaging apparatus 5.

Next, as in the previous case, the first and second bag holding air cylinders 147, 148, 157, 158 are actuated to operate the first upper bag holding members 143, 144 and the first lower bag holding member 151. , 152, the second upper bag pressing member 153, near the front edge of the bag located at the first delivery position.
154 and the second lower bag pressing members 161, 162
The vicinity of the rear edge of the bag located at the delivery position is clamped and held. Then, the spout holding members 113 and 183 of the first and second transfer means 111 and 181 respectively return to the first and second delivery positions, and respectively hold the spouts of the bags.

Here, the separating air cylinders 163 and 164 of the separating means 141 are actuated to push up the pressing rod 165, hit the connecting portion of the two bags before and after, and further push up the bags to bring the bags before and after. To separate. Next, the air cylinders 163 and 164 operate in reverse to pull down the pressing rod. In addition, the first and second bag pressing air cylinders 147, 148, 157, 158 also operate in the opposite manner to the above,
Release the sandwiched bag. Then, the spout holding member 113 of the first transfer means 111 moves to the second delivery position, and the spout holding member 183 of the second transfer means 181.
Moves to the delivery position and delivers the bag B. Hereinafter, this operation is repeated. Meanwhile, in the meantime, the next spare connecting body W is connected to the spout holding leaf spring 7 of the preliminary connecting body supplying means 71.
Attach it to 3. As a result, it is possible to carry out the packaging operation continuously without stopping the machine.

As is apparent from the above description, according to the present invention, the spout portion of the bag is held and the bag is transferred, so that the bag can be transferred stably and reliably. Further, since the bag holding means is provided, the bags can be reliably held at the respective delivery positions, and the bags can be easily and reliably separated at the connecting portion. Further, since the bag supporting means is provided, the posture of the bag can be stably and surely held when the bag is transferred or separated.

[Brief description of drawings]

FIG. 1 is an overall front view of a back-in-box packaging machine that uses the inner bag supply device of the present invention.

FIG. 2 is a plan view of a back-in-box packaging machine.

FIG. 3 is a side view of the back-in-box packaging machine.

FIG. 4 is a front sectional view of an inner bag supply device.

FIG. 5 is a plan view showing a partial cross section of the inner bag supply device.

FIG. 6 is a side view showing a partial cross section of the inner bag supply device.

FIG. 7 is a partially enlarged view of a portion showing a pre-connector supply means of FIG. 4.

FIG. 8 is a partially enlarged view of a portion showing a pre-connector supply means of FIG.

9 is a partially enlarged view of a portion showing first and second transfer means of FIG. 4.

10 is a partially enlarged view of a portion showing first and second transfer means of FIG. 5.

[Explanation of symbols]

1 Back-in-box packing machine 3 Inner bag feeder 5 filling and packaging machine 71 Preliminary articulated body supply means 73 Spout holding leaf spring 77 slide arm 79 Slide member 81 slide rail 83 Air cylinder for sliding arm movement 87, 88 support guide plate 93, 94 Support guide bar 103, 104 connecting rod 107 Air cylinder for opening and closing support guide 111 first transfer means 113 First Spout Holding Member 115 First chuck cylinder 117 First transfer arm 119 First moving piece 121 First servo motor 123 First screw shaft 126 Moving piece guide rail 127 First support plate 141 Separation means 143, 144 First upper bag pressing member 147, 148 Air bag cylinder for holding the first bag 151, 152 First lower bag pressing member 153, 154 second upper bag pressing member 157, 158 Air cylinder for holding the second bag 161, 162 second lower bag pressing member 163,164 Air cylinder for separation 165 Push rod 181 second transfer means 183 Second spout holding member 185 Second chuck cylinder 187 Second transfer arm 189 Second moving piece 191 Second servo motor 193 Second screw shaft 196 Moving piece guide rail 197 Second support plate

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E030 AA06 BB01 BB04 BC03 EA01                       EB03 GA04                 3E056 AA05 BA01 CA01 DA01 EA08                       FB05

Claims (5)

[Claims] 1. A bag feeding device for sequentially supplying inner bags to a filling and packaging device of a back-in-box packaging machine, wherein a first delivery position, a second delivery position and a delivery position are provided along a bag transfer path. And the bag supply device is provided with a holding member for holding the spout portion of the bag of the connecting body formed in a continuous state of a plurality of bags, the leading bag of the connecting body in the connected state. First transfer means for transferring from the first delivery position to the second delivery position, reciprocating between the first delivery position and the second delivery position, and the first delivery position Arranged between the first and second delivery positions, and a bag holding means that holds the bags respectively located in the second delivery position to prevent movement of the bags and releases the bags when the bags are transferred. And a bag located at the first delivery position and a bag located at the second delivery position And a holding member for holding the spout portion of the bag, and the bag separated from the connecting body is transferred from the second delivery position to the filling and packaging apparatus. Second transfer means for transferring the sheet to the delivery position, which reciprocates between the second delivery position and the delivery position, and at least the first delivery position and the second delivery position, and the bag And a bag supporting means for supporting the lower surface of the bag. 2. The bag supply device according to claim 1, wherein the bag holding means is arranged in front and rear of the separation means in the bag transfer direction, and holds both sides of the bag from above and below. A bag feeder. 3. The bag supply device according to claim 1, wherein the first and second transfer means each include a servo motor, and the holding members of the first and second transfer means include the respective servo motors. A bag supply device, which is moved by a bag. 4. The bag supply device according to claim 1, wherein the bag supply device further includes a holding member that holds a spout portion of a leading bag of the spare connection body. The holding member holds the spare connecting body at the standby position, and if desired, transfers the leading bag in the connected state from the standby position to the first delivery position. A bag feeding device, which is configured to be capable of reciprocating between a standby position and the first delivery position. 5. The bag feeding device according to claim 4, wherein the preliminary connecting body feeding means is arranged near the standby position.
A preliminary connecting body supporting member for supporting the lower surface of the bag of the preliminary connecting body is provided, and the preliminary connecting body supporting member supports the lower surface of the bag and a retracted position retracted to the outer side in the width direction of the bag. A bag supply device, characterized in that it is movable between and.