JP2817788B2 - Unwrapping device for folding ties of folded cardboard boxes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding strap obtained by bundling a plurality of flat cardboard boxes folded into a flat shape for storage, transportation and the like in a stage preceding a predetermined packing process for the cardboard boxes. The present invention relates to an apparatus for unraveling a tying cord, which is obtained by bundling a group of folding cardboard boxes that are automatically cut.

[0002]

2. Description of the Related Art In general, as a preceding stage of an automatic boxing process of a cardboard box used in a sorting place for oranges and the like, a folding cardboard box is supplied to an automatic box making apparatus as a unit, and flaps are sequentially folded to form a box. However, the prefabricated cardboard box to be supplied to this automatic box making machine is usually a box that is folded in a flat shape and bundled with a binding strap made of synthetic resin etc. They are bundled. For this reason, it is necessary to cut off at least the binding straps that have bundled the folded cardboard boxes on the transport conveyor at the stage before reaching the automatic box making device to release the binding condition.

[0003]

In this case, in order to cut off the binding cords of the folded cardboard box group, conventionally, an operator simply manually works each time using a cutting tool such as a cutter or a pinch. The tying strap that tied together had to be cut, which was troublesome. In addition, the binding straps are hanged on the single corrugated cardboard box group at least at two places in the longitudinally longitudinally folded position, and several straps are tied at a constant speed. The work of cutting on the conveyed conveyor is cumbersome, and since the supply is usually performed in bundles, the inefficient cutting of corrugated cardboard boxes is also performed from this point. Of course, it is not easy to follow the box-making speed of the next-stage automatic box-making machine due to human work. Further, in the operation of unraveling (cutting) such a tying string, since the cut tying string that has been cut off is manually removed one by one, it is troublesome, and there is still a problem in so-called string waste removal.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention automatically cuts a binding string made of a synthetic resin of a folded cardboard box bundled in units of a plurality of pieces by a heating iron while being transported along a transporting conveyor path, and reverses the cut binding string. An object of the present invention is to provide a device for unraveling a tying string in which folding cardboard boxes are bundled to solve the above-mentioned problem by performing automatic removal by pulling out to the side.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided one side of a conveying conveyor path for feeding a plurality of folded cardboard box bundles in which flat folded cardboard boxes are bundled with a binding string made of synthetic resin in a plurality of units. In addition, a plurality of oscillating-type heat irons corresponding to the number of piled-up corrugated cardboard box bundles arranged on the support arm at the end of the cylinder and a cutting cylinder parallel to the conveyor direction are provided, and the one-side hook portion of the binding string is blown. A string cutting means, a reciprocating type feeding mechanism of a cylinder provided with a base orthogonal to the conveyor direction on the side of the conveyor path opposite to the cutting position of the string cutting means, and a mechanism parallel to the conveyor direction provided at the tip end. A string pulling means which is a combination of a string hooking mechanism of a cylinder with a locking claw, and a pulling means interposed between the reciprocating type feeding mechanism of the string pulling means and the conveyor path and below the position of the string hooking mechanism. A waste string receiving box for receiving waste string waste, and a box for pressing the uppermost folded corrugated cardboard box bundle with a movable push plate that is lifted and lowered by a sliding arm that rotates with a cylinder facing directly above the cutting position of the transport conveyor path. A plurality of heat irons that move in the direction of the conveyor by tilting a plurality of heat irons that are tilted by a cylinder for swinging the bundle of the folded cardboard box bundles of the overlapped feeding stopped at a predetermined position on the conveyor path. So that the cut ties are forcibly removed by hooking with the locking claws of the string hook mechanism movable in the direction of the conveyor facing the opposite side and retreating of the reciprocating type feeding mechanism. It was done.

[0006]

[0007]

[0008]

[0009]

[0010] As described above, the apparatus for unraveling the binding string, which is a bundle of the folded cardboard boxes, is provided with a predetermined number of heating irons moving in the direction of the conveyor to one side of a predetermined position of the conveyor path, and a string cutting means arranged on the opposite side. Flat folds in which a string extracting means for pulling the cut tie string outward and a box holding means for pressing a group of cardboard boxes tied upward are arranged, and the synthetic tie ties are bundled in several sheets. What is necessary is just to feed the bundle of cardboard boxes to the transport conveyor path in a state of being stacked in several stages. When the folded cardboard box bundle reaches a predetermined position on the conveyor path and stops once, the box holding means is activated and the sliding pressing plate presses the top of the folded cardboard box bundle to prevent collapse. At this time, the string cutting means provided on one side of the conveying conveyor path is operated, and the hot iron provided on the supporting arm at the rod end protruding of the cutting cylinder parallel to the conveyor direction faces the side surface of the folded cardboard box bundle. However, here, the heat iron is still parallel to the conveyor direction and does not touch the side surface of the folded cardboard box bundle. In this state, the support arm supporting the heat iron is operated by the cylinder for swinging the receiving side, and the support arm itself is rotated to set the heat iron in an inclined posture (so-called swing), and the tip of the iron is folded and a cardboard box bundle is folded. Touch the side of the body. Thereafter, when the cylinder is retracted, the heating iron heated to a predetermined temperature slides on the binding cord that bundles the folded corrugated cardboard box bundle and is melted.

[0011] On the other hand, at the time of cutting when the binding string is melted, the string extracting means on the opposite side of the conveyor path is operated. Since the base provided at the tip of the cylinder type feeding mechanism arranged orthogonally to the conveyor direction of the string extracting means is provided with a string hooking mechanism corresponding to the number of binding cords which bundle the folded cardboard box bundles, After each cord hooking mechanism has reached the binding strap position, the locking claw slides (transverses) in the direction of the conveyor by the operation of the strap hooking cylinder, and hooks the binding strap on the side opposite to the cutting side. In this state, if the entire cord hooking mechanism is pulled outward by the retraction of the feeding mechanism, the binding cord wound around the folded cardboard box bundle is pulled out.

In this case, since the waste string receiving box for receiving the extracted string is provided between the transporting conveyor path and the cylinder type feeding mechanism, the cut-off binding string pulled out to the waste string receiving box is provided. Is automatically dropped and not scattered around.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for unraveling a binding string according to the present invention.

FIG. 1 shows a folded corrugated cardboard box bundle formed by stacking several flat cardboard boxes in units of two and bundling them with a synthetic resin tying cord at an intermediate position along a conveyor path. 1 shows a binding cord unwinding device for a binding strap, and 1 is a binding strap B made of synthetic resin in which flat folded cardboard boxes A 'are stacked in units of several sheets.
The string cutting means 2 is arranged on one side of the predetermined position in the conveyor path for feeding the folded cardboard box bundle A bundled in the above. The string cutting means 2 has a structure in which a predetermined number (for example, a folded cardboard box) is attached to a cutting cylinder 3 arranged in parallel to the conveyor direction and a vertical support arm 5 pivotally attached to a receiving seat 4 provided at the tip of the rod 3a. (The number of stacked bundles, 4 in the figure)
Of the supporting arm 5 and the seat 4
A swinging mechanism 8 is interposed between the swinging cylinders 7. Reference numerals 9 and 9 'denote rod guide rods of the cutting cylinder 3. Reference numeral 10 denotes a string extracting means located at the string cutting position of the conveyor path 1 and arranged on the other side. The structure of the string extracting means 10 includes a pair of cylinders 11 arranged outside at right angles to the conveyor direction. A reciprocating type feeding mechanism 13 including a plate-like base 12 parallel to the conveyor direction provided at the tip of the rod 11a, and a locking claw 15 at the end of a predetermined number of rods 14a parallel to the conveyor direction disposed on the front surface of the base 12 And a string hooking mechanism 16 of the string hooking cylinder 14. Reference numeral 17 denotes box holding means for pressing the uppermost part of the folded cardboard box bundle A facing the upper side of the conveyor path 1 at the string cutting position. The structure of the box holder 17 is provided at one side edge of the conveyor path 1. A fulcrum shaft 19 erected on the top of an upright supporting plate 18 is supported by a swing arm 21 having a push plate 20 disposed at the tip, and a cylinder 22 is connected to the base end of the swing arm 21. . Reference numeral 23 denotes a waste string receiving box which is located at the place of the string extracting means 10 and receives a extraction string which is inserted between the conveyor path 1 and the feeding mechanism 13 so as to be freely inserted;
With the above overall configuration, a tying device 24 for tying the folded cardboard box group is provided.

Next, this operation will be described. First, the folded corrugated cardboard box bundle A bundled with the binding string B made of synthetic resin is fed to the conveyor 1 in a state of being stacked in several stages (four in the figure). The rollers 1b are sequentially conveyed forward by a group of rotating rollers 1b driven by the chain 1a.

Here, when the folded corrugated cardboard box bundle A reaches the string cutting position of the transport conveyor path 1, a predetermined positioning sensor 25 arranged at an appropriate position is operated to temporarily stop the transport conveyor path 1 to stop the box holding means 17. Operate. In this case, when the cylinder 22 provided on the upright support plate 18 is operated and the base end of the swing arm 21 is pushed up by the extension of the rod 22a, the swing arm 21 descends and pivots at the distal end side via the fulcrum shaft 19, and the push plate is pushed. 20 presses the uppermost folded cardboard box bundle A to prevent collapse.

At this time, the cord cutting means 2 arranged on one side of the conveyor path 1 operates. First, when the cutting cylinder 3 is operated and the rod 3a is fed out in parallel to the conveyor direction, the hot iron 6 protruding from the support arm 5 provided at the tip is also fed out to the side position of the folded cardboard box bundle A. However, at this time, the heat iron 6 is not in contact with the side surface of the folded cardboard box bundle A parallel to the conveyor direction. Thereafter, the heat iron 6 rotates the support arm 5 itself, which is the attachment member, at an appropriate angle. That is, if the swing cylinder 5 provided on the fixed receiving seat 4 side which is the end of the rod 3a of the cylinder 3 is operated and the rod is extended,
The support arm 5 rotates toward the conveyor with the pivot 5a as a base point, inclines the heat iron 6, and brings the iron tip into a state of contact with the side surface of the bundle of cardboard box bundles A.

In this state, if the rod 3a is retracted by the return operation of the cutting cylinder 3, the heat iron 6 moves forward while sliding on the side surface of the folded cardboard box bundle A, so that the folded cardboard box bundle The iron tip comes into contact with the tying string B hung on A and is cut off thermally (see FIGS. 8 and 9). At this time,
The string extracting means 10 provided on the side opposite to the string cutting means 2 is also operated to pull the cut-off tie string B to the opposite side.

In this case, the cylinder 11 serving as the feeding mechanism 13 of the string extracting means 10 operates, and the rod 11
The base 12 at the end a is fed out to a position near the side surface of the folded cardboard box bundle A, and thereafter, the cylinder 14 serving as a string hooking mechanism 16 disposed on the front surface of the base 12 is operated to retreat the rod 14a which has been projected in advance. Then, the hook-shaped locking claw 15 provided at the tip of the rod 14a moves so as to slide against the side surface of the folded cardboard box bundle A, so that the hook 14 is cut off from the folded cardboard box bundle A. Hook the tying string B '. If the feeding mechanism 13 is retracted in this state, the binding string B 'hooked on the locking claw 15 is pulled out outward (see FIG. 10).

However, since the strap pulling means 10 has a mode in which the binding straps B to be hung on the folded cardboard box bundle A are usually bound at two locations in the longitudinal direction, the feeding mechanism 13 and the strap hooking mechanism 16 are used. Are configured as a pair of two units so as to correspond to the two binding strap positions.

Here, the binding cord B 'pulled out from the folded cardboard box bundle A side by the cord hooking mechanism 16 is a scrap cord receiving box composed of a cardboard box or the like interposed between the feeding mechanism 13 and the conveyor path 1. 23, it is detached from the locking claw 15 and falls naturally to be stored. When the waste string receiving box 23 is full of waste strings, the empty waste string receiving box 23 may be replaced.

Of course, the sliding arm 21 of the activated box holding means 17 rotates upward, the push plate 20 returns above the conveyor and stands by, and the support with the heat iron 6 extended in the direction of the conveyor of the string cutting means 2. The arm 5 also waits for retreat, and the string extracting means 1
0 also sets the locking claws 15 in a state in which the base 12 on which they are disposed is retracted, and waits for the next folded cardboard box bundle A to be fed.

As described above, the folded cardboard boxes A 'from which the binding cords B have been removed through the cord cutting position of the conveyor path 1 are sequentially sent and moved to the automatic box making apparatus (not shown) arranged in front. It will be.

[0024]

As described above, the apparatus for unraveling the binding cords of the present invention in which the folded cardboard boxes are bundled is a folded cardboard box bundle in which the folded cardboard boxes are bound on one side of the conveyor path by the synthetic resin binding cord. String cutting means having a heat iron that cuts off the tying string that works by sensing the feeding of the tying, and a string pulling means comprising a string hooking mechanism and a feeding mechanism for hooking and pulling the tying string cut off by the hot iron on the opposite side. And a box holding means for pressing the folded corrugated cardboard box bundle just above the cutting position, so that even with a predetermined number of folded corrugated cardboard box bundles tightly bound by a tying string, the heat Because it can be reliably cut, and each cut strap is hooked by each strap hook mechanism facing the opposite position and pulled outward.
Even when a plurality of folded cardboard box bundles are stacked and transported, they can be performed at once, and efficient cutting and extraction can be reliably performed. In addition, the extracted waste string is automatically dropped into the waste string receiving box set below between the conveyor path and the string removal means, so that it is not troublesome, and the troublesome and labor-intensive string pulling work of the cut waste string as in the conventional case can be performed. It is also useful for organizing and arranging the work site without having to worry about post-processing of the pulled waste string.

Further, since the unraveling device of the present invention has a simple air-driven structure as a whole, malfunction, failure,
The device has a compact design with less damage, easy maintenance and inspection, and with a string cutting means and a string removing means on both sides and a box restraining means located directly above the transport conveyor path. It has the effect that it is optimal in a narrow fruit sorting place without taking the installation place.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of an embodiment of an apparatus for unraveling a tying cord, which is a bundle of folded cardboard boxes according to the present invention.

FIG. 2 is a perspective view showing a main part of the box holding means.

FIG. 3 is a perspective view showing a main part of the string cutting means.

FIG. 4 is an explanatory diagram of a swing mechanism of a heat iron.

FIG. 5 is a perspective view showing a main part of the string extracting means.

FIG. 6 is a perspective view showing the installation of the waste string receiving box.

FIG. 7 is an explanatory diagram in which the top of the folded corrugated cardboard box bundle fed to the conveyor path is pressed by the push plate of the box holding means.

FIG. 8 is an explanatory diagram in which a heat iron faces the side surface of the folded corrugated cardboard box bundle fed to the transport conveyor path.

FIG. 9 is an explanatory view showing a state in which the binding iron of the folded corrugated cardboard box bundle is cut by fusing by sliding the heat iron.

FIG. 10 is an explanatory view showing a state in which a tying string hung on a cut folded cardboard box bundle is pulled outward by a string extracting means on the opposite side.

FIG. 11 is a perspective view of a folded corrugated cardboard box bundle in which a binding string is hung on a unit of several folded corrugated cardboard boxes.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor path 2 String cutting means 3 Cutting cylinder 5 Support arm 6 Heat iron 7 Neck swing cylinder 8 Neck swing mechanism 10 String pull-out means 11 Cylinder 12 Base 13 Reciprocating type feeding mechanism 14 String hook cylinder 16 String hook mechanism 17 Box holding means

Claims (1)

(57) [Claims] On one side of the 1. A conveyor path for feeding the flat folded cardboard box on a plurality units plastic binding string in bundled folding cardboard box beam body in a state of overlapping several stages, Combe
Cutting cylinder parallel to the shaft direction and a support arm at the end of the cylinder
Corresponding to the number of folded cardboard box bundles
A plurality of oscillating heat irons are installed and the tying part on one side is cut off.
A strap cutting means that, on the side opposite to the cutting position of the strap cutting means
Install a base perpendicular to the conveyor direction on the side of the conveyor path.
The reciprocating type feeding mechanism of the girder cylinder and this tip
Hook a cylinder with a locking claw parallel to the conveyor direction
String removing means comprising a combination of mechanisms;
Means between the reciprocating type feeding mechanism and the conveyor path.
Extraction interposed below the strap hook mechanism position
Moveable up and down by a scraping box that receives string waste and a sliding arm that rotates with a cylinder facing directly above the cutting position of the conveyor path.
Box holding means for pressing the uppermost folded cardboard box bundle with the embossing plate, and stopped at a predetermined position on the conveyor path.
Attach the binding cord of each folded cardboard box bundle
Tilt the multiple iron trowels moving in the
Fused by the contact of the inclined iron tip, this cut
Move the tying strap in the direction of the conveyor facing the opposite side
The hook with the hook of the hook mechanism and the reciprocating
An unwrapping device for binding ties, comprising a group of folded cardboard boxes, wherein the devices are forcibly pulled out when retracted .