JPH1095412A - Carton unsealing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an article inside from being damaged by cutting a part in the vicinity of an upper end of each side part of a carton by a rotary round blade diagonally from a lower part so that only a blade tip is abutted on a lid even when the rotary round blade is deeply intruded when the carton is cut to unseal the carton. SOLUTION: A carton to be carried by a carrying conveyor 7 is shifted by a shifting means A to one side part of the carrying conveyor 7 before cutter devices C, C'. The height and width of the carton are measured, and a pair of right and left cutter devices C, C' are lowered to the prescribed height position by an elevating/lowering means D. Then, one cutter device C' is transversely shifted toward the carton side by a transversely shifting means E. The carton is advanced by a carton holding and feeding means F added to the cutter devices C, C' while floating of the carton is prevented, and a blade tip of rotary round blades 45, 45' are intruded into a part in the vicinity of an upper end of each side part of the carton diagonally from a lower part to perform the cutting, and the carton is unsealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of picking up individual pieces of roses, and automatically picking up the pieces of goods stored in a carton sealed with cardboard or the like. The present invention relates to a carton opening device for opening an upper part of a carton.

[0002]

2. Description of the Related Art Conventionally, in order to open a carton,
First, the upper adhesive tape was cut manually by a cutter knife, etc., and then the upper four sides of the folded lid were cut off to open the top of the carton. There was also a risk of cutting.

[0003]

Therefore, there is a machine for automatically cutting the upper surface of the carton. However, this machine cuts the upper surface of the carton with a cutting blade. The tip of the cutting blade must be inserted into the carton considerably deeper than the thickness of the cardboard. However, in order to insert the cutting blade deeply into the carton, a sufficient gap is required between the product and the inside of the carton lid so as not to damage the product in the carton.

[0004] Further, when cutting from the upper surface of the carton with a cutting blade, it is difficult to cut only the thickness of the side of the corrugated cardboard near the base of the folded lid piece on the upper surface,
In addition to the thickness of the cardboard on the side of the carton, it is cut leaving a slightly inwardly bent part of the edge of the lid piece in a frame shape,
The part which is bent inward and remains in contact with the side of the carton is very obstructive because the product is supported when the stored product is taken out.

[0005] From the above point, according to the present invention, when cutting the upper surface of the carton, it is possible to cut even if the gap between the product in the carton and the inside of the lid of the carton is small, and the product can be taken out smoothly. It is an object of the present invention to provide a carton opening device that can be automatically cut off.

[0006]

According to the present invention, there is provided a carton opening apparatus for cutting a carton conveyed by a conveyer from a diagonally lower portion in the front-rear direction of the carton in the vicinity of the upper end on both sides of the carton. The carton opening device includes a wrapping means for wrapping the carton conveyed by the conveyor to one side of the conveyor, detecting means for detecting the height and width of the carton, Lifting means for raising and lowering a pair of left and right cutter devices opposed to each other at a height position, and moving one of the cutter devices in a direction perpendicular to the traveling direction of the conveyor toward a predetermined side position of the carton in contact with the detecting means. And the pair of left and right cutter devices pierces the vicinity of the upper end on both sides of the carton from obliquely below and cuts the carton in the front-rear direction. Together with a rotary circular blade, it is characterized in that it has a guide means in contact with the carton hold-down and feed means and the side of the carton in contact with the upper surface of the carton.

According to the present invention having the above structure, the carton conveyed by the conveyor is moved closer to one side of the conveyor on the conveyor in front of the cutter device by the wrapping means and detected by the detecting means. The height and width of the carton are measured.

Next, the pair of left and right cutter devices is lowered by the elevating means to a predetermined height position measured by the detecting means.
The cutter device descends to a predetermined height position on the upper side on both sides of the carton, but the carton is conveyed by being wrapped to one side of the conveyor, so that the cutter device on the width-adjusted side is lowered to reduce the width of the carton. The other cutter device is placed as it is at a predetermined position on the side of the brought side, but the other cutter device is laterally moved by the lateral moving means to the carton side from the lowered height position according to the width measured by the detecting means of the carton. Then, it stops at a predetermined position on the side.

Then, the carton is prevented from being lifted up while being pressed from above by the carton pressing and feeding means which comes into contact with the upper surface of the carton provided in the cutter device, and is guided by the guide means which comes into contact with the side of the carton. The carton is prevented from swaying in the horizontal direction. In this state, the cutting edge of the rotary round blade enters the carton from near the upper end on both sides and cuts diagonally from below, and the carton is cut from the front to the rear as the carton advances. Is done. In cutting, the rotating round blade protrudes into the carton upward from obliquely downward, so that even if the rotating round blade enters deeply, it hits on the lid, so that it does not hit the inner product and is not damaged.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of the apparatus of the present invention, FIG. 2 is a vertical sectional side view of the same, FIG. 3 is a plan view of the same, FIG. 4 is a partially enlarged front view of the same, and FIG. FIG. 6 is a partial longitudinal sectional front view showing the state, and FIG.

In the drawing, reference numeral 1 denotes a frame of the apparatus, and the frame 1 has four columns 2 provided one each at the front and rear left and right.
An upper beam 3 provided above the front and rear left and right columns 2 and two lower beams 4 provided below the left and right columns 2,
It is composed of two upper girders 5 and lower girders 6 provided between the front and rear struts 2. Reference numeral 7 denotes a conveyor such as a roller conveyor or a belt conveyor for sequentially conveying the cartons 8;
The inside of the conveyor 7 is surrounded by the frame 1 and
The vehicle is traveling from one direction to the other by a speed control motor 9 provided in the vehicle.

A roller conveyor 10 is provided on the underframe 11 at the same height as the conveyor 7 in front of the conveyor 7 in front of the carton introduction side, separately from the conveyor 7. Conveyor 10
Each roller is installed obliquely with respect to the frame portions 12 on both sides of the underframe 11 so that the width can be shifted to one side of the frame.
Is configured. And the underframe 11 on the side where the width is shifted
A conveyor-type guide wall 13 is provided on the upper side by a rubber belt or the like with which the carton 8 contacts, and the guide wall 13 is rotatable in the traveling direction of the carton 8 so that the carton 8 can be positively advanced.

Reference numeral 14 denotes a width measuring sensor for measuring the width of the carton 8 after the closing of the width, which is attached to the underframe 11 on the side opposite to the side where the width of the carton 8 is moved. Reference numeral 15 denotes a height measuring sensor for measuring the height of the carton 8 after the closing of the width, which is attached to the underframe 11 and constitutes detecting means B together with the width measuring sensor 14.

A side plate 16 is provided in the vertical direction near the center of both side surfaces of the frame 1, and a screw shaft 17 is mounted on the side plate 16 in a vertical direction. A pulley 18 mounted on the upper portion of the screw shaft 17 includes: A belt 21 is hung between pulleys 20 provided on an elevation servomotor 19 which communicates with the height measuring sensor 15 provided on the frame 1, and rotates a screw shaft 17.

A nut 22 is screwed onto the screw shaft 17, a lifting plate 23 is fixed to the nut 22, and a lifting frame 24 provided with a pair of right and left cutter devices is fixed between the lifting plates 23 on both sides. Then, the elevating servomotor 19 rotates by an amount measured by the height measuring sensor 15, and the screw shaft 1 is rotated.
Lifting means D for raising and lowering the cutter devices C and C ′ at a predetermined height position of the carton 8 by the rotation of the 7 is configured.
Reference numeral 25 denotes a guide rail provided on both sides of the screw shaft 17 in the vertical direction of the side plate 16. An LM guide 26 fixed to the elevating plate 23 is fitted to the guide rail 25, and the guide rail 25 extends along the guide rail 25. The lifting of the lifting frame 24 is stabilized.

One end of a chain 27 is fixed to the upper and lower surfaces on both sides of the elevating frame 24. The other end of the chain 27 is connected to the frame 27 via a sprocket 28 provided on the upper portion of the frame 1. The chain 27 on the lower surface is fixed to the lower surface of the balance weight 29 via a sprocket 30 provided at the lower portion of the frame 1.

The elevating frame 24 comprises an upper plate 24A and a front / rear plate 24B. A servomotor 31 for transverse feed communicating with the width measuring sensor 14 is provided above the upper plate 24A. One cutter device C of a pair of left and right cutter devices C and C ′ is fixed to the lower surface of the lifting frame 24 on the side of the carton 8 to which the carton 8 is brought closer by a mounting plate 32. The other cutter device C ′ is mounted on a mounting plate 35 fixed to a nut 34 that is screwed to a screw shaft 33 provided in the longitudinal direction of the lifting frame 24.

Then, the traverse servomotor 31
And a pulley 37 provided on the screw shaft 33
A belt 38 is hung between them, and the transverse feed servomotor 31 is rotated by an amount measured by the width measuring sensor 14, and the rotation of the screw shaft 33 causes the cutter device to be positioned at a predetermined side portion of the carton 8. A lateral moving means E for laterally moving C ′ is provided.

Reference numeral 39 denotes the upper surface plate 2 of the lifting frame 24.
4A, a guide rail provided in parallel with the screw shaft 33 with the screw shaft 33 interposed therebetween. The LM guide 40 provided on the mounting plate 35 is fitted to the guide rail 39, and the guide rail 39 extends along the guide rail 39. Thus, the lateral movement of the cutter device C ′ is stabilized.

Next, a pair of left and right cutter devices C and C 'will be described. Reference numeral 41 denotes a front and rear cutter mounting plate which is attached to the lower surface of the mounting plate 35 at predetermined intervals in front and rear of the mounting plate 32 or 41 ', and between the front and rear cutter mounting plates 41 and 41'. The pivots 42, 42 'can be adjusted to rotate downward to the carton side at a predetermined angle.
The cutter motors 43, 43 'are attached, and the shafts 44, 4 of the cutter motors 43, 43' are attached.
At the tip of 4 ', a rotating round blade 45 orthogonal to the shafts 44, 44',
45 'is attached. The left and right cutter motors 43, 43 'are mounted facing each other at the same angle. The round blades 45 and 45 ′ are set at positions most suitable for cutting, with the ends of the blade portions protruding obliquely downward from near the upper end of the side of the carton 8.

Reference numerals 46 and 46 'denote the cutter mounting plate 4.
1, 41 ', a guide mounting bracket provided below the guide mounting brackets 46, 46', a number of rollers 47, 47 'rotating in the horizontal direction toward the traveling direction of the conveyor 7 are arranged in a line. Roller support frames 48, 48 'are attached. Roller 47,
47 'rotates freely by abutting against the side of the carton 8 to prevent the carton 8 from swaying when the carton 8 advances, and constitutes guide means G for accurate cutting.

Reference numerals 49 and 49 'denote the cutter mounting plate 4.
1, 41 ', an upper conveyor mounting bracket provided on the upper part of the upper conveyor mounting bracket 49,
Upper belt conveyors 50 and 50 'are attached to 49' so as to be able to travel at the same speed as the conveyor 7 with the belt surface horizontal and oriented in the direction of travel of the conveyor 7. 5
1, 51 'are upper conveyor motors for operating the upper belt conveyors 50, 50'. The upper belt conveyors 50 and 50 'abut against the upper part of the carton 8 to prevent the carton 8 from being lifted up, thereby forming a carton holding and feeding means F for accurate cutting. In the figure, reference numeral 52 denotes an angle adjusting bolt of the cutter motor 43.

As shown in FIG. 6, the apparatus of the present invention having the above-described structure is configured such that two identical apparatuses are bent 90 ° forward in the direction of travel of the carton of the first apparatus and the next identical apparatus is advanced so that the carton advances. The carton, whose both sides of the carton were cut by the cutter device in the first device by turning 90 °, is turned 90 ° on the transport conveyor of the next device and proceeds, and the remaining carton is moved by the cutter device. Both sides are cut off and the top is open. Of course, after cutting both sides of the carton with one device, turn the carton 90 °,
It is also possible to convey again from the front of the same device and cut off the remaining both sides.

[0024]

According to the present invention, in cutting, the vicinity of the upper end of both sides of the carton is cut from the oblique lower part by the rotating round blade, so that even when the rotating round blade is deeply inserted, the cutting edge hits the lid and the inner product is cut. Since there is no damage, cutting can be performed with a small clearance between the product and the corrugated cardboard, and there is no residue because the rotating round blade can penetrate deeply.
Also, the top of the carton is cut off near the top and the top of the carton is opened, so the lid is completely removed and the edge of the lid piece does not remain in a frame shape as in the past, so that the product can be taken out smoothly. Becomes In addition, the carton is just pulled on the conveyor and the width of the carton is detected, and the size of the carton is detected. The side of the carton is prevented from rolling by the guide means,
Further, since the upper part of the carton is prevented from being lifted up by the carton holding and feeding means, it is automatically cut accurately and is a useful invention.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the device of the present invention.

FIG. 2 is a longitudinal sectional side view showing one embodiment of the device of the present invention.

FIG. 3 is a plan view showing an embodiment of the device of the present invention.

FIG. 4 is a partially enlarged front view showing an embodiment of the apparatus of the present invention.

FIG. 5 is a partial longitudinal sectional front view showing a carton cutting state showing an embodiment of the present invention device.

FIG. 6 is a mechanism diagram in which the same device as the device of the present invention is installed by bending 90 °.

[Explanation of symbols]

 7 Conveyor 8 Carton 9 Speed control motor 10 Roller conveyor 14 Width measuring sensor 15 Height measuring sensor 17 Screw shaft 19 Elevating servomotor 22 Nut 23 Elevating plate 24 Elevating frame 31 Lateral feeding servomotor 32 Mounting plate 33 Screw shaft 34 Nut 35 Mounting plate 41, 41 'Cutter mounting plate 43, 43' Cutter motor 45, 45 'Rotating round blade 47, 47' Roller 50, 50 'Upper belt conveyor 51, 51' Upper conveyor motor A Means B Detecting means C Cutter device C 'Cutter device D Elevating means E Lateral moving means F Carton holding and feeding means G Guide means

Claims (1)

[Claims] 1. A carton opening device for cutting the vicinity of the upper end of both sides of a carton conveyed by a conveyor from diagonally downward in the front-rear direction of the carton. The carton opening device is configured to cut a carton conveyed by the conveyor. Means for shifting the width to one side of the carton, detecting means for detecting the height and width of the carton, and raising and lowering a pair of left and right cutter devices which are in contact with the detecting means and are opposed to a predetermined height position of the carton. A pair of left and right cutter devices, comprising: a raising and lowering device for moving the cutter device; and a lateral moving device for communicating one of the cutter devices to a predetermined side position of the carton and moving the one cutter device in a direction orthogonal to the traveling direction of the conveyor. Has a rotating round blade that penetrates the vicinity of the upper end of both sides of the carton diagonally from below, cuts the carton in the front-rear direction, and has a cap that contacts the top of the carton. A carton opening apparatus comprising: a carton holding / feeding means; and a guide means for contacting a side portion of the carton.