JPH10310118A - Removing device of binding band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a band bound to form a cross on the top plate face of a palletized article. SOLUTION: This is a device to remove a band B binding an article 2 put on a pallet 3 to form a cross at the top plate face thereof. The device is provided with a transfer means 1 of the pallet and a band-removal means 11 transferable on a straight line. The transfer means 1 of the pallet is constituted of a turntable which is rotatable 90 degrees and two conveyors 5, 6 mutually crossing at right angles installed on toe turntable 4. One of the conveyors is vertically movable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding band removing device for removing a band binding an article placed on a pallet.

[0002]

2. Description of the Related Art For example, articles such as corrugated cardboard are palletized, a top plate is placed on the uppermost stage, bound up and down by a plastic band, and delivered to a user. The user removes the binding band before depalletizing. As an apparatus for removing a binding band, for example, Japanese Patent Application Laid-Open No. 9-2491
As described in Japanese Patent Publication No. 7, there is an apparatus in which a band removing means is installed on a movable table movable in parallel with a traveling direction of a pallet.

[0003] The band removing means includes gripping means for detecting the band by movement and gripping the band, cutting means for cutting the gripped band, and pulling means for pulling the cut band. The above-described device corresponds to a band bound only in a direction perpendicular to the traveling direction of the pallet.

[0004]

However, in recent years,
In order to prevent the collapse of the load, the top plate has been bound in two directions, that is, in a cross shape. Such a cross-shaped binding cannot be handled by the above-described conventional apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a binding band removing device capable of removing a band bound in a cross shape on the top surface of a palletized product. And

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is an apparatus for removing a band which binds an article placed on a pallet in a cross shape on a top plate surface, comprising: Equipped with a moving means and a band removing means that can move on a straight line, the pallet moving means is composed of a 90 ° rotatable turntable and two orthogonal conveyors installed on the turntable, and one of the conveyors can be moved up and down It is characterized by being.

According to the present invention, when the pallet is carried into the center of the turntable, the pallet advances in a direction perpendicular to the moving direction of the band removing means and stops at a position where the band can be removed. Then, the band removing means moves from the standby position and removes one of the cross-shaped bands. When the band is removed, the band removing means returns to the standby position, and the pallet retreats to the center of the turntable. Next, the turntable is rotated by 90 °, the pallet is advanced by a conveyor different from the above-mentioned one for forward / backward travel, and the pallet removing means moves to remove the other of the bands.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a binding band removing apparatus according to the present invention will be described below with reference to FIGS. FIG. 1 is a plan view showing the entire configuration of the binding band removing device, and FIG.
FIG.

As shown in FIGS. 1 and 2, the binding band removing device includes a pallet moving means 1 disposed at a central portion,
A band removing means 11 is provided adjacent to the pallet moving means 1 and can move on a straight line. In addition, adjacent to the pallet moving means 1, an inlet conveyor 60 for supplying a pallet 3 on which the articles 2 are placed on the pallet moving means 1, and a pallet 3 on which the articles 2 discharged from the pallet moving means 1 are placed An exit conveyor 65 for transporting to the process is provided. Pallet 3 and articles 2 stacked in multiple stages
Are bound in a cross shape on the top plate surface by a plastic band B.

The pallet moving means 1 comprises a turntable 4 rotatable by 90 ° and two orthogonal conveyors installed on the turntable 4, ie, a roller conveyor 5.
And a chain conveyor 6. The turntable 4 is partially provided with teeth 4a on the outer peripheral portion. The teeth 4a mesh with the gear 7 driven by the motor m, so that the turntable 4 rotates forward and backward by 90 ° about the main shaft 4b. It is possible. The outer periphery of the turntable 4 is supported by a receiving roller 8.

Among the two conveyors, the roller conveyor 5 is fixed to the turntable 4, while the chain conveyor 6 is a lifter 12 having an air cylinder.
And is supported by the turntable 4 through the base member so as to be able to move up and down. Therefore, while the conveying surface of the roller conveyor 5 is at a fixed position, the conveying surface of the chain conveyor 6 can take two positions: a position higher and a position lower than the conveying surface of the roller conveyor 5. The transport surface of the roller conveyor 5 is constituted by a plurality of drive rollers, and the transport surface of the chain conveyor 6 is constituted by a chain 10 which is stretched over a plurality of splotches 9.

Next, the band removing means will be described with reference to FIGS. FIG. 3 is a side view showing the detailed structure of the band removing means, and FIG. 4 is a plan view of the band removing means. The band removing means 11 includes a gripper 15 for gripping the band B binding the article 2, a cutting unit 30 for cutting the gripped band, a pulling unit 35 for pulling the cut band B,
And a shredding portion 45 for shredding the attracted band B into small pieces. The band removing means 11 includes a cart V having wheels W
It is mounted on the top and is movable in a direction (X) parallel to the article surface (see FIG. 1).

The grip 15 includes a hook 17 having an air cylinder 16 and a pressing plate 19 having an air cylinder 18 for pressing and holding the band B against the hook 17. The grip 15 includes a detection lever 20 for detecting the band B, and a sensor 21 for detecting that the distal end of the detection lever 20 detects the band B and becomes substantially parallel to the band surface. I have. The end of the detection lever 20 is connected to a rotary actuator 23 via a spring 22. When the detection lever 20 detects the band surface, the detection lever 20 is rotated by 90 ° and the detection lever 2 is rotated.
0 is evacuated.

Further, after the tip of the detection lever 20 detects the band surface, the carriage V is driven to
When the band removing means 11 is moved in parallel with the surface of the article, a lever 25 for detecting that the band B is located at a predetermined position in the hook 17 and a sensor 26 are provided. The cart V is stopped by the detection signal of the sensor 26.

A cutting section 30 is provided adjacent to the grip section 15. The cutting section 30 includes a heater 31 for fusing the band B and an air cylinder 32 for moving the heater 31 back and forth. Hook 17, pressing plate 1
9, gripping portion 15 including detection lever 20 and heater 3
1 is supported by the support frame 33. The support frame 33 is rotatable by about 90 ° by a rotary actuator 34. Thereby, the tip of the band B cut by the heater 31 is transferred to the pulling unit 35.

The pulling unit 35 includes a pair of upper and lower rollers 36,
37, a spring 38 for elastically holding the upper roller 36,
An air cylinder 39 for moving the lower roller 37 up and down. Band B attracted by the attracting unit 35
Is continuously sent to the shredding unit 45. The shredder 45 includes a rotary blade 47 that is driven to rotate by a motor 46 and a rotary blade 4.
The band B is cut into a number of small pieces. The shredder 45 is provided with a discharge chute 49 for discharging the shredded band pieces.

The grip 15, the cutting unit 30, and the pulling unit 3
5 and the shredder 45 are supported by a support frame 51, which can be raised and lowered by a screw rod 52, a nut 53 fixed to the support frame 51, and a motor 54 for driving the screw rod 52 to rotate. It has become.

Next, the operation of the above-structured binding band removing device will be described. The pallet 3 on which the articles 2 are placed is carried into the center of the turntable 4 by the entrance conveyor 60 and the chain conveyor 6. When the loading of the pallet 3 is completed, the chain conveyor 6 descends, and the pallet 3 is placed on the roller conveyor 5. Next, the roller conveyor 5 is operated to advance the pallet 3 in a direction perpendicular to the moving direction (X) of the band removing means 11 and stop at a position where the band can be removed. Then, the band removing means 11 moves from the standby position and removes one of the cross-shaped bands B.

The operation of the band removing means 11 is performed as follows. The hook 17 is advanced by operating the air cylinder 16 of the grip 15. At this time, since the position of the band B is not constant, the detection lever 20 may not detect the band B in some cases. At this time, the hook 17 and the detection lever 20 are retracted, and the carriage V is moved in a direction parallel to the article surface.
, The hook 17 is advanced again by operating the air cylinder 16. When the detection lever 20 contacts the band B, the sensor 21 detects this.

When the carriage V is moved in this state, the hook 17 is engaged with the band B. This is detected by the lever 25 and the sensor 26, and the carriage V is stopped. By operating the air cylinder 16 to return the hook 17 to the retracted position (the position in FIG. 3), the band B is
Attracted to. Next, the air cylinder 18 is operated to advance the pressing plate 19, and the band B is gripped by the pressing plate 19 and the hook 17.

While holding the band B, the air cylinder 32 is operated to press the heater 31 against the band B to blow the band. After blowing Band B, Band B
Before pulling the band B, the screw bar 52 is driven to rotate to raise the support frame 51 that supports the grip portion 15. As a result, the band B bent at the corner of the top plate or the like comes off the corner.

Thereafter, the rotary actuator 34 is operated to rotate the gripper 15 downward by approximately 90 °. At this time, the lower roller 37 of the pulling unit 35 is
Is located below by the operation of. Therefore, the tip of the band B gripped by the gripper 15 is located between the upper and lower rollers 36 and 37. Next, the air cylinder 39 is operated to return the lower roller 37 to the original position,
Band B is sandwiched between 6, 37. Next, the pulling unit 3
5, the band B is rotated to rotate the band B into the
5 and the rotary blade 47 is rotationally driven to rotate the band B
Into a number of small pieces. The small pieces of the band B are discharged from the discharge chute 49.

When the band B is removed by the above-described operation, the band removing means 11 returns to the standby position, and the pallet 3 on which the articles 2 are placed is retracted to the center of the turntable 4 by the operation of the roller conveyor 5. Next, the turntable 4 rotates by 90 °, and the pallet 3 is placed on the rising chain conveyor 6. Next, the chain conveyor 6 is operated to remove the pallet 3 again from the band removing means 11.
In the direction perpendicular to the moving direction (X), and stops at a position where band removal is possible. Then, the band removing means 1
1 moves from the standby position and removes the remaining band B.
The operation of the band removing means 11 is performed in the same manner as described above. The pallet 3 on which the articles 2 from which the binding band has been removed is placed is taken out of the turntable 4 by the chain conveyor 6 and the exit conveyor 65, and is conveyed to the next step.

As described above, according to the present invention, after removing one of the cross-shaped bands, the pallet can be rotated by 90 ° using a turntable to remove the remaining bands. Therefore, it is possible to remove the band bound in a cross shape on the top plate surface of the palletized article.

[Brief description of the drawings]

FIG. 1 is a plan view showing an entire configuration of a binding band removing device according to the present invention.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is a side view showing a detailed structure of band removing means in the binding band removing device of the present invention.

FIG. 4 is a plan view of a band removing unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet moving means 2 Article 3 Pallet 4 Turntable 5 Roller conveyor 6 Chain conveyor 10 Lifter 11 Band removing means 15 Gripping part 17 Hook 20 Detection lever 21 Sensor 30 Cutting part 31 Heater 35 Pulling part 36, 37 Roller 45 Shredding part B band

Claims (1)

[Claims] 1. An apparatus for removing a band binding an article placed on a pallet in a cross shape on a top plate surface, comprising: a pallet moving means; and a band removing means movable on a straight line. The pallet moving means comprises a turntable rotatable by 90 ° and two orthogonal conveyors installed on the turntable, and one of the conveyors can be moved up and down.