JPH0924917A - Tying band removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a tying band removing device adaptable even when a distance between the band surface and the surface of an article is not uniform, or even when a band is bent at the corner of an article, and in addition, even when a band is equipped with a clip. SOLUTION: A tying band removing device is a device to remove a band 3 tying an article 2, and is equipped with a hook 7 with a sensor. Then, the hook 7 detects the band 3 by advancing to the band surface sidefirst, and then moving in the direction which is orthogonal to the advancing direction, and the tying band removing device consists of a pressing plate 9 which grips the band 3 being engaged with the hook 7, a heater 21 which cuts the gripped band 3, and rollers 26, 27 which draw the cut band 3. The hook 7 repeats the advancing/retracting and the movement until the sensor detects the band 3.

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.

[0002]

2. Description of the Related Art For example, articles such as cardboard boxes are palletized, a top plate is placed on the uppermost portion thereof, and they are vertically bound with a plastic band and delivered to a user. The user removes the binding band before depalletizing.

As a device for removing the binding band, an L-shaped hook is inserted between the band and the box, and the band is hooked and then grasped, the grasped band is cut, and the cut band is pulled and removed. There is a device. The band is hooked
This is performed by advancing the hook equipped with the sensor to the box surface, stopping the advancing when the box surface is detected, moving the hook in the direction orthogonal to the advancing, and stopping the movement when the band is detected. Since the removed band is bulky, it is cut into small pieces at the same time as it is removed.

[0004]

However, when the space between the band surface and the surface of the article is substantially constant as in the case of the box, the surface of the article can be used to detect the band, but when it is not constant. Cannot be substituted. In this case, it may be possible to detect the band surface when the hook advances, but this may not be possible because the position of the band is not constant.

Further, the binding band may be bent at the corners of the top plate and the pallet, and the cut band may not be attracted. Further, the joining at the time of bundling may be made by a plastic clip made of a material different from that of the band, instead of fusion bonding. In this case, it is necessary to separate the pieces of the shredded band from the clips.

According to the present invention, the binding band can be removed even if the distance between the band surface and the article surface is not constant, the band is bent at the corner portion of the article, and the band is clipped. The purpose is to provide a device.

[0007]

In order to achieve the above-mentioned object, a first aspect of the present invention is a device for removing a band that binds articles, which comprises a hook with a sensor,
The hook advances to the band surface side and then moves in a direction orthogonal to the forward direction to detect the band, and gripping means for gripping the band hooked on the hook, cutting means for cutting the gripped band, and cutting. The gripping means repeats forward and backward movement and movement until the sensor detects the binding band.

According to the first aspect of the present invention, since the position of the binding band is not constant, the sensor may not detect the band surface even if the hook with the sensor advances toward the band surface. At this time, the gripping means provided with the hook retracts, then moves in a direction orthogonal to the retracting direction, and then advances again.

A second aspect of the present invention is a gripping means for gripping a band that binds articles, a cutting means for cutting the gripped band, and a drawing means for drawing the cut band upward or downward. In the binding band removing device including means, the device is provided with an elevating device and is lowered or raised in a direction opposite to the direction of pulling the band before pulling the band.

According to the second aspect of the present invention, when pulling the cut band from top to bottom, the removing device is raised before pulling the band. When pulling from bottom to top, it descends. Then, the band is returned in the direction opposite to the direction of pulling the band, and the band bent at the corner portion of the top plate or the like comes off the corner.

According to a third aspect of the present invention, a gripping means for gripping a band that binds articles, a cutting means for cutting the gripped band, a drawing means for drawing the cut band, and a drawing means. In a binding band removing device comprising a shredding means for shredding the band into small pieces, the binding band is a band with a clip, and the pulling means detects the roller that is elastically supported to feed the band and the displacement of the roller. A sensor is provided, and the shredding means is provided with a branch plate for branching the discharge port of the shredded pieces, and the branch plate is operated by the signal of the sensor.

According to the third aspect of the present invention, since the clip is thicker than the band, the roller is displaced when the clip comes. By detecting this displacement, the branch plate is operated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the binding band removing device according to the present invention will be described below with reference to FIGS. FIG. 1 is a side view showing the overall configuration of the binding band removing device, and FIG. 2 is a plan view of the binding band removing device. As shown in FIG. 1, many articles 2 are stacked on the pallet 1 in multiple stages.
The pallet 1 and the articles 2 stacked in multiple stages are integrally bound by a plastic band 3. Both ends of the band 3 are fixed by plastic clips 4.

The binding band removing device M is a gripping portion 5 which constitutes a gripping means for gripping the band 3 that binds the articles 2.
A cutting unit 20 that constitutes a cutting unit that cuts the grasped band, a drawing unit 25 that forms a drawing unit that draws the cut band 3, and a shredder that shreds the drawn band 3 into small pieces. And a shredder portion 35 that constitutes a means. The binding band removing device M is installed on a carriage V having wheels W, and is movable in a direction parallel to the article surface.

As shown in FIGS. 1 and 2, the grip portion 5 includes a hook 7 having an air cylinder 6 and a pressing plate 9 having an air cylinder 8 for pressing and holding the band 3 on the hook 7. I have it. Further, the grip portion 5 includes a detection lever 10 for detecting the band 3 and a detection lever 1
A sensor 11 for detecting that the tip portion of 0 detects the band 3 and is substantially parallel to the band surface. The end portion of the detection lever 10 is connected to the rotary actuator 13 via the spring 12, and when the detection lever 10 detects the band surface, the detection lever 10 is rotated 90 ° to retract the detection lever 10. ing.

Further, in the grip portion 5, when the tip end of the detection lever 10 detects the band surface, the carriage V is driven to move the binding band removing device M in parallel with the article surface. A lever 15 and a sensor 16 are provided to detect that the hook 3 has been set in the hook 7 at a predetermined position. The truck V is stopped by the detection signal of the sensor 16.

A cutting section 20 is installed adjacent to the grip section 5. The cutting section 20 is composed of a heater 21 for melting and cutting the band 3 and an air cylinder 22 for moving the heater 21 forward and backward. The hook 7, the pressing plate 9, the grip portion 5 including the detection lever 10 and the cutting portion 20 including the heater 21 are supported by the support frame 23. The support frame 23 can be rotated by about 90 ° by the rotary actuator 24. As a result, the tip of the band 3 cut by the heater 21 is transferred to the attracting section 25.

The attracting portion 25 includes a pair of upper and lower rollers 26,
27, a spring 28 that elastically holds the upper roller 26,
An air cylinder 29 for moving the lower roller 27 up and down is provided. Further, a sensor 30 for detecting the upward displacement of the upper roller 26 is installed in the attracting section 25. As a result, when the pair of rollers 26 and 27 sandwich the clip 4, the upper roller 26 is displaced upward, and the sensor 30 detects this.

The band 3 attracted by the attracting section 25 is continuously sent to the shredding section 35. Fig. 3 is II of Fig. 1.
1 is a view taken in the direction of arrow I, and as shown in FIG. 1 and FIG.
Is composed of a rotary blade 37 rotatably driven by a motor 36 and a fixed blade 38 installed adjacent to the rotary blade 37, and cuts the band 3 into a large number of small pieces. Moreover, the shredded portion 35
Is provided with a discharge chute 39 as shown in FIG.
A branch plate 40 is arranged in the discharge chute 39. The branch plate 40 swings in response to the signal from the sensor 30, and ejects a small piece of the band to the band outlet 39a and a clip to the clip outlet 39b.

The gripping portion 5, the cutting portion 20, the pulling portion 25
The shredder portion 35 is supported by a support frame 41. The support frame 41 includes a screw rod 42 that constitutes an elevating means, a nut 43 fixed to the support frame 41, and a motor 44 that rotationally drives the screw rod 42. It can be moved up and down by and. The screw rod 42, the nut 43, and the motor 44 constitute an elevating means.

Next, the operation of the binding band removing device constructed as described above will be described. A large number of articles 2 stacked on the pallet 1 and bound by the plastic band 3 are used by the conveyor 45 to remove the binding band M.
It is conveyed to the position of and stopped at this position. By operating the lifter 46 in this state, the pallet 1
And raise the bound article 2.

Next, the air cylinder 6 of the grip portion 5 is operated to move the hook 7 forward. At this time, since the position of the band 3 is not constant, the detection lever 10 may not detect the band 3. At this time, the hook 7 and the detection lever 10 are moved backward, the carriage V is moved in a direction parallel to the article surface, and then the air cylinder 6 is operated to move the hook 7 forward again. When the detection lever 10 contacts the band 3, the sensor 11 detects this.

When the carriage V is moved in this state, the hook 7 engages with the band 3. The lever 15 and the sensor 16 detect this and stop the carriage V. By operating the air cylinder 6 to return the hook 7 to the retracted position (position in FIG. 1), the band 3 is pulled toward the device M side. Next, the air cylinder 8 is operated to move the pressing plate 9 forward,
The band 3 is gripped by the pressing plate 9 and the hook 7.

With the band 3 held, the air cylinder 22 is operated to press the heater 21 against the band 3 to melt the band. In this embodiment, after the band 3 is melted and cut, the band 3 is pulled from the top to the bottom. Therefore, before pulling the band 3, the screw rod 42 is rotationally driven to hold the grip portion 5.
The support frame 41 that supports the As a result, the band 3 bent at the corner of the top plate or the like is removed from the corner.

After that, the rotary actuator 24 is operated to rotate the grip portion 5 downward by approximately 90 °. At this time, the lower roller 27 of the attracting section 25 is located below by the operation of the air cylinder 29. Therefore, the grip 5
The tip of the band 3 gripped by the upper and lower rollers 2
Located between 6 and 27. Next, the air cylinder 29 is operated to return the lower roller 27 to the original position, and the upper and lower rollers 26,
The band 3 is clamped by 27.

Next, the rollers 26 and 27 of the attracting section 25 are rotated to continuously feed the band 3 to the shredding section 35, and the rotary blade 37 is rotationally driven to shred the band 3 into a large number of small pieces. . The small pieces of the band 3 are discharged from the band discharge port 27a. When the clip 4 is sandwiched by the upper and lower rollers 26 and 27 during shredding, the upper roller 26 is displaced upward. When the sensor 30 detects this, the branch plate 40 swings,
The shredded clip 4 is discharged from the clip discharge port 27b. Therefore, the strip of band 3 and the clip 4
Can be sorted into small pieces.

In the embodiment shown in FIGS. 1 to 3, the case where the band is drawn from the top to the bottom has been described, but when the band is drawn from the bottom to the top, the cutting portion 20 is provided above the hook 7. The pulling section 25 and the shredding section 35 may be installed above and symmetrically with respect to the rotation center of the rotary actuator 24.

[0028]

As described above, according to the present invention,
Until the sensor that directly detects the band surface detects the band surface, the gripping means having the hook with the sensor moves forward and backward and moves, so that the distance between the band surface and the article surface is not constant, and The band can be gripped even when the position is not constant.

Further, according to the present invention, since the band is returned before the band is pulled, the band bent at the corner of the article can be pulled away from the corner. Further, according to the present invention, even when the band has a clip, the clip can be discharged to a discharge port different from the band small piece, so that the clip does not mix with the band small piece.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a binding band removing device according to the present invention.

FIG. 2 is a plan view showing an embodiment of the binding band removing device according to the present invention.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 1;

[Explanation of symbols]

 M binding band removing device 2 article 3 band 4 clip 5 gripping part 6 air cylinder 7 hook 8 air cylinder 9 pressing plate 10 detection lever 11 sensor 15 lever 16 sensor 20 cutting part 21 heater 22 air cylinder 24 rotary actuator 25 pulling part 26 , 27 Roller 30 Sensor 35 Shredded part 37 Rotating blade 38 Fixed blade 40 Branch plate 42 Screw rod 43 Nut

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Akita 1880 Shimosakunobu, Takatsu-ku, Kawasaki-shi, Kanagawa

Claims (5)

[Claims] 1. A device for removing a band that binds articles, comprising a hook with a sensor, and the hook is detected by advancing toward the band surface side and then moving in a direction orthogonal to the advancing direction. The gripping means for gripping the band hooked on the hook, the cutting means for cutting the gripped band, and the pulling means for drawing the cut band. A binding band removing device characterized by repeating advancing and moving. 2. A binding band remover comprising gripping means for gripping a band that binds articles, cutting means for cutting the gripped band, and pulling means for pulling the cut band upward or downward. An apparatus for removing a binding band, wherein the apparatus includes an elevating means and descends or rises in a direction opposite to a direction in which the band is drawn before drawing the band. 3. A gripping means for gripping a band that binds articles, a cutting means for cutting the gripped band, a drawing means for drawing the cut band, and shredding the drawn band into small pieces. In the binding band removing device including a shredding unit, the binding band is a band with a clip, and the drawing unit includes a roller that is elastically supported to feed the band, and a sensor that detects a displacement of the roller. The binding band removing device is characterized in that the means comprises a branching plate for branching the discharge port of the shredded small pieces, and the branching plate is operated by the signal of the sensor. 4. The binding band removing device according to claim 1, wherein the band is made of plastic. 5. The binding band removing device according to claim 3, wherein the clip is made of plastic.