JP2749633B2 - Method and apparatus for packing boxes such as bags - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a bag such as an A type corrugated cardboard box in which an upper open type case filled with spaghetti or the like is automatically aligned and stacked. The present invention relates to a method and an apparatus for packing a package.

<Prior Art> Conventionally, as a method of packing a large number of packages in a generally used cardboard box while automatically stacking a large number of packages, for example, a single unfolded cardboard box is used. At the center position, a package group that has been subjected to a stacking process of appropriately stacking at a separate position is placed, and a box material such as cardboard is sequentially bent from around the four sides of the package group to assemble a box, substantially Box packing called so-called Lapland is known. However, this packing method involves a combination of a stacking device section serving as a means for aligning hoppers and a box packing device section serving as a folding means for box assembly, so that the size of the apparatus is inevitably increased and space is inevitably increased. It cannot be installed in a place where it is not available.

<Problems to be Solved by the Invention> However, when the package is a flat bag packed with food such as spaghetti, etc. The packing was not possible, and the workers were able to hold the empty boxes by hand, grabbing a plurality of bags one by one and packing them sequentially. This is an inefficient packing operation. Further, even if an automatic box packing operation is performed, a complicated process must be performed because the stacking unit and the packing unit have been used as separate components so far, which is inefficient.

The present invention has been made in view of the above circumstances, and has a configuration in which a stacking plate and a collapsible prevention plate are appropriately fed out and regulated in a box body for dropping a bag to perform a stacking and packing process at a stroke, thereby solving the above-mentioned problem. It is an object of the present invention to provide a method and an apparatus for packing a package such as.

<Means for Solving the Problems> One of the present inventions is that when a box body reaches a predetermined packing position, a work guide rod projects from a work conveyor side in a lateral direction and a stacking plate from above. Is lowered below the box to form a stuffing gap, and the packages delivered from the work conveyor are dropped and stuffed into the stuffing gap. After a predetermined number of stacks, this group of packages is lowered from above. The stack is advanced by a predetermined pitch together with the box while being stacked by the collapse prevention plate, and the subsequent packages are stacked in the packing gap between the collapse prevention plate and the stationary stacking plate. This is a box packing method in which the stacking plate and the collapsing prevention plate are aligned and stacked in a predetermined number of rows by raising and lowering, and another invention is an invention of an apparatus directly used for carrying out the invention of the method. And the packing portion of the transport path In addition to arranging a sandwich belt for intermittent feeding of boxes on both sides of the box, a work conveyor for supplying packages is installed orthogonally to one side of the upper part, and a work guide rod facing the box body position is provided on a side of the work conveyor. A work guide device that can be extended freely is provided, and
A rotatable claw for expanding the outer flap is provided at a position in front of the upper packing frame of the box packing section, and a step which can be extended to the bottom of the box body on the feeding line of the work guide rod on the upper packing frame of the box packing section. A cylinder unwinding member vertically arranged with a stacking plate and a cylinder unwinding member vertically arranged with a stackable plate for preventing stacking collapse which is arranged in parallel with the stacking plate can be moved in the moving direction of the box. It can be freely installed.

<Operation> Due to the above-described configuration, when the empty box transported on the transport path comes to the standby position, which is the preceding stage of the packing position, the rotating claw at a position off the standing flap of the box rotates. Then, the outer flap on one side is bent horizontally and then proceeds to the filling position. When the empty box body comes to the filling position, the plate for stacking is lowered by the operation of the cylinder from above the end of the filling portion of the first stage (the first row) to reach the vicinity of the bottom, and the work conveyor side in the horizontal direction. , The work guide rod projects horizontally, and the packages fed on the work conveyor are discharged along the work guide rod, sequentially fall into the box, and a predetermined number are stacked. Thereafter, this box is moved to the next row by the rotation of the sandwiching belt.
At the same time as the pitch is advanced, at this time, the collapsing prevention plate is lowered by the operation of the cylinder from above and the stacked packaging is pushed slightly forward to prepare the stacked packaging, and the collapsing prevention plate is formed into a box. Along with this, a packing gap of the next row is formed between the collapsing prevention plate and the stationary stacking plate, and the following package is dropped from the work conveyor and stacked in the packing gap. Is done. Hereinafter, in a manner similar to the above, a predetermined row of stacking is performed on the box body by a predetermined raising / lowering and advancing operation of the stacking plate and the collapse prevention plate. After the box packing is completed, the box body is fed out after the both plates and the work guide rod are retracted.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.
It is as follows.

Numeral 1 is a box conveying path composed of a roller conveyor 2 in which a cardboard box assembling apparatus (not shown) is installed at the rear. Motors are provided on both sides of a box packing section 3 in front of the conveying path 1. 4, an intermittent feeding sandwiching belt 6 which rotates intermittently via a clutch brake 5 is provided upright. Reference numeral 7 denotes an upper portion of the machine frame 8 at the standby position 3a, which is a front stage (front side in the traveling direction) of the box packing portion 3, and does not touch the standing flap of the box at all times when contacting the box passage detection means 9. It is a rotation claw for spreading the outer flap disposed at the position. Reference numeral 10 denotes a fixed flap holding rod provided on one side of the box packing portion 3 which is a rotating side of the rotating claw 7, and 11 is disposed orthogonally to a lateral side of the packing position 3 b of the box packing portion 3. In the work conveyor, a box A transferred to the packing position 3b is provided on one side of the tip of the work conveyor 11.
A work guide device 14 formed by attaching a work guide rod 12 extending upward to the air cylinder 13 is provided. 15 is an encoder type package detector installed on the side of the work conveyor 11. Reference numeral 16 denotes a stacking means installed on the upper part of the machine frame 8 of the box packing part 3, and the stacking means 16 makes the rod part 17 a of the vertical air cylinder 17 serving as a cylinder feeding body parallel to the cylinder 17. The slidable support shaft 19 is connected to a base 20 at the end thereof, and a plate 21 for stacking is attached to the base 20. Reference numeral 22 denotes a collapsing prevention means provided at the upper end of the machine frame 8 in the same manner as described above. The collapsing prevention means 22 is mounted on a horizontal guide shaft 23 parallel to the box transfer direction, and is moved back and forth by an electric cylinder 24 equipped with a fixed servomotor. A vertical air cylinder 26 serving as a cylinder feeder is fixed to the moving movable plate 25,
The rod portion 26a is connected to a base 28 at the end of a slidable support shaft 27 that is parallel to the cylinder 26, and a pair of left and right collapse prevention plates 29 is attached to the base 28. In this case, since the stacking plate 21 faces between the left and right collapse prevention plates 29, even if they are aligned, they do not contact each other.

Next, this operation will be described. The packing of the bag A (package) filled with loose materials into the box A shown in FIG.
Shows columns, three columns. First, the empty box A for erecting the flap assembled through a predetermined box making process is sequentially transferred on the roller conveyor 2 and reaches the position of the sandwiching belt 6 of the box packing portion 3 when the empty box A is sandwiched. The empty box A is clamped by the contact belt 6, and is advanced intermittently in accordance with the box packing process. In this state, if the inner flap Ab (flap perpendicular to the forward direction) of the box A pushes up the detection claw 9a of the box passage detecting means 9 disposed above the standby position 3a, the detection signal causes The outer flap expanding rotation pawl 7 rotates 90 ° by the drive of the motor 30 to bend the outer flap Aa on one side outward (see FIG. 6), and moves the outer flap Aa with the movement. The fixed flap holding rod 10 is retracted into the lower surface to maintain a bent state. Therefore, the outer flap of the box A moved to the front packing position 3b
Aa enters the lower end of the work conveyor 11 facing the side and does not hinder the bag B from falling.

Here, when the box A stops at the position where the first row packing gap is disposed at the packing position 3a, the work guide device 14 of the work conveyor 11 is operated, and the work guide rod
12 is horizontally fed out to the position above the one row of packing positions of the box A, and the discharging and dropping of the bag B is aligned. At the same time, the cylinder 17 arranged on the upper part of the machine frame 8 is operated, and the stacking plate 21 is lowered to the vicinity of the bottom of the box A with the supporting shaft 19 interlocked with the cylinder 17 so as to fill the first row. A gap a is formed. Thereafter, the bag B transferred on the work conveyor 11
Falls into the packing gap a of the box A (see FIG. 7), and thereafter, the bags B are sequentially stacked up to a predetermined number (5 in the figure).
Pieces).

Thus, the packing detector 15 of the work conveyor 11 detects that the predetermined number is clogged, and the sandwiching belt 6 rotates the motor 4 via the clutch brake 5 due to this signal. In response to this, the box body A is rotated, and the box body A is advanced by one pitch corresponding to the stacking width. In this case, the stacking plate 21 is not retracted and is set in an immobile standby state. At this time, a separate cylinder 26 is operated in advance and the support shaft 27 is used to move the collapsing prevention plate 29 to the end of the stacked bag goods B. At the bottom of the box A and the plate
29, the cylinder 24 provided on the side of the horizontal guide shaft 23 is actuated to move the cylinder A once in the advancing direction by a small distance l 'to adjust the stacking, and the cylinder 24 is further extended to follow the advance of the box A. It moves forward by one pitch 1 to prevent the collapse of the stacked bags B (see FIGS. 10A, B, and C), and between the moved collapse prevention plate 29 and the immovable stacking plate 21. Next, a next row of packing gaps b is formed.

Thereafter, the subsequent bag B transferred on the work conveyor 11 falls into the packing gap b of the box A, and is stacked.

When the stacking of the second row is completed, the collapse prevention plate 29 is once retracted (upward) in advance, and the side portion of the bag body B of this stacking is lowered again in the same manner as described above to perform the push stacking. Trim. In this way, the third row of clogging gaps c is formed between the collapse prevention plate 29 and the plate 29 and the rear wall surface of the box when the plate 29 is lowered again. However, in the last stacking operation, the stacking plate 21 may be kept in the standby state because the rear wall surface of the box serves as a stacking frame.

In the above-described process, when the bag A is packed in the box A in a predetermined number of rows in a predetermined number of rows (due to a signal generated by the package detector 15), the work guide projecting to the box A side. Rod 12
Retreats to the work conveyor 11 side and retreats the collapsing prevention plate upward. Thereafter, the box body A moves forward on the conveying path 1 by the rotation of the sandwiching belt 6 and moves to the lid closing step. The body A is fed from the standby position 3a to the packing position 3b. Hereinafter, the filling step is repeated as appropriate.

<Effects of the Invention> As described above, the method and the apparatus for packing bags and the like according to the present invention include a step stacking plate, a collapsing prevention plate, and a work guide rod in an empty box body according to a predetermined movement of the box body. The lowering position of the bag that falls from the horizontally arranged work conveyor is regulated by the work guide rod, and it is ensured in conjunction with the guide of the stacking plate that descends to the bottom of the box. Can be stacked. Moreover, after the predetermined stacking, the side portions of the stacked bags are temporarily pushed and stacked by a separately falling plate for preventing collapse, and the bags are moved forward in accordance with the advance pitch of the box, so that the bags can be moved without collapsing. Get. In the next row stacking step, the subsequent bags are dropped into the gap formed between the advanced collapse prevention plate and the immobility standby stacking plate, so that reliable stacking can be performed. That is, since the above-mentioned process can be performed at one place without going through a separate step of the stacking means and the stacking means as in the conventional stacking method, the entire apparatus can be made compact, Can also be installed. Also,
Since each plate and work guide rod can be extended by a cylinder, instantaneous operation can be obtained and high-speed clogging can be dealt with. Each operation is performed by a control mechanism that combines a servo motor and an encoder, which may cause malfunction. There are no effects. In the above description, the package is described as a bag, but the same applies to a box as a package.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view,
2 is a plan view, FIG. 3 is a side view of a main part, FIG. 4 is a slope view of the stacking means, FIG. 5 is a slope view of the collapse prevention means, and FIG.
FIG. 7 is an explanatory view of the outer flap bending, FIG. 7 is an explanatory view of stacking in the first row, FIG. 8 is an explanatory view of preparation of the bag in the same row and formation of a clogging gap in the second row, and FIG. 10A, 10B, and 10C are explanatory diagrams of the second-row stacking, and FIGS. 10A, 10B, and 10C are explanatory diagrams of the operation of the collapse prevention plate. DESCRIPTION OF SYMBOLS 1 ... Conveyance path, 3 ... Box packing part, 6 ... Intermittent feeding belt for box body, 7 ... Rotating claw for expanding outer flap, 10 ... Fixed flap holding rod, 12 ... Work guide rod, 13 ... Cylinder , 15 ...
Package detector, 17… Cylinder, 21… Stacking plate, 24… Electric cylinder, 26… Cylinder, 29… Collapse prevention plate, a, b, c… Clogging gap.

Claims (2)

(57) [Claims] When the box body reaches a predetermined packing position, the work guide rod projects from the work conveyor side in the lateral direction, and the stacking plate is lowered from above to below the box body to reduce the packing gap. Then, the packages fed from the work conveyor are dropped and packed in the packing space, and after stacking a predetermined number of the packages, the packages are stacked and arranged by a collapse preventing plate which descends from above. The package is advanced by a predetermined pitch together with the box, and the subsequent packages are stacked in the gap between the collapsing prevention plate and the immobilization standby stacking plate. A box packing method for a package such as a bag, wherein a predetermined number of rows are arranged and stacked in a row by raising and lowering a plate. 2. An interleaving belt for intermittent feeding of a box is disposed on both sides of a box packing portion of a conveying path, and a work conveyor for supplying packages is installed orthogonally to one side of the upper part. A work guide device is provided at a side portion of the work guide rod that allows the work guide rod facing the position of the box to be extended, and a rotary claw for expanding an outer flap is provided at a position before the upper machine frame of the box packing portion. In the upper machine frame, a cylinder extension body vertically disposed with a stacking plate which is on the extension line of the work guide rod and which can be extended to the bottom of the box body, and which can be extended in parallel with the stacking plate. A box packing device for packages such as bags, characterized in that a cylinder unwinding member having a vertically stacked plate for preventing stacking collapse is movably installed in the moving direction of the box.