JP-7857011-B2 - Bag removal device

Inventors

• 経澤 幸弘

Assignees

• 株式会社 ツネザワ工業

Dates

Publication Date

20260512

Application Date

20220520

Claims (5)

1. A bag removal device for removing a bag from a package in which the contents are wrapped in a bag, The system comprises a main conveyor for transporting the packaged body, a cutter mechanism having a cutter for cutting at least a portion of the bag of the packaged body while it is being transported by the main conveyor, and a roller mechanism for separating and discharging the bag from the packaged body after the bag has been cut by the cutter. The roller mechanism comprises a first roller with a gear around it and a second roller with a gear around it that meshes with the first roller, and the bag is discharged by passing between the rotating first roller and the second roller . The first roller and the second roller are arranged parallel to each other vertically, with the first roller on the upper side and the second roller on the lower side, and the direction of the rotational axis of the first roller and the second roller is inclined with respect to the conveying direction of the main conveyor, with the rear side in the conveying direction being inclined laterally outward by a range of 3° to 20°. A bag removal device characterized in that, when the package reaches the cutter mechanism as it is transported by the main conveyor, the rotating cutter cuts the end of one lateral end of the package from above along the transport direction of the main conveyor, and when the package reaches the roller mechanism, the first roller and the second roller grip the bag at the other lateral end of the package and discharge it to the outside in the lateral direction of the main conveyor, while the contents are transported in the transport direction of the main conveyor as they are .
2. In the bag removal device according to claim 1, A bag removal device characterized in that the diameter of the gear of the second roller is smaller than the diameter of the gear of the first roller .
3. In the bag removal device according to claim 1 , The bag removal device is characterized in that the cutter mechanism includes a variable mechanism that allows the height of the cutter to be changed by rotating it about a pivot point relative to the frame side of the bag removal device, and the cutter is able to move upward according to the thickness of the package when the package passes below the cutter .
4. In the bag removal device according to claim 1 , A bag removal device comprising an upper conveyor provided above the main conveyor, wherein the packaged body is transported sandwiched between the upper side of the main conveyor and the lower side of the upper conveyor when passing through the cutter mechanism and the roller mechanism .
5. In the bag removal device according to claim 4 , The upper conveyor is equipped with a tensioning mechanism, The bag removal device is characterized in that the tension mechanism has rollers that bias the conveyor belt of the upper conveyor downward from the inside using the elastic force of a spring .

Description

This invention relates to a bag removal device, and more particularly to a bag removal device that removes bags from a package containing contents that are sealed in bags. When removing contents from a bag, manual removal is time-consuming and laborious, and the burden on the worker increases with the quantity. Furthermore, in the case of food products such as meat, it is necessary to remove the bags without significantly damaging the contents. For example, Patent Document 1 discloses a bag removal device comprising a conveyor for transporting packaging, a cutter that cuts open the bag by contacting the packaging being transported on the conveyor, and a roller positioned above the conveyor so as to contact the opened packaging. The roller rotates around an axis that intersects diagonally with the transport direction of the packaging being transported on the conveyor. The conveyor and roller transport the bag in the transport direction while simultaneously transporting the contents in a direction intersecting the transport direction, thereby separating the bag from its contents. Patent No. 5833785 This is a top view showing an example of the basic configuration of the bag removal device of the present invention.This is a side view showing an example of the basic configuration of the bag removal device of the present invention.This is a top view showing an example of the bag removal device of the present invention, including the motor.This is a front view showing an example of the bag removal device of the present invention, including the motor.This is a side view showing an example of the roller mechanism of the bag removal device of the present invention.A cross-sectional view showing an example of the roller section of the bag removal device of the present invention.This is a side view showing an example of the cutter mechanism of the bag removal device of the present invention.This is a top view showing an example of the cutter mechanism of the bag removal device of the present invention.This is a side view showing an example of the upper conveyor of the bag removal device of the present invention.This is a side view showing an example of the bag removal device of the present invention, including the frame configuration.This is a front view showing an example of the bag removal device of the present invention, including the frame configuration. The embodiments for carrying out the present invention will be described below. In each figure, the x-direction represents the conveying direction of the main conveyor 10, the y-direction represents the width or lateral direction of the main conveyor 10 (a direction perpendicular to the conveying direction of the main conveyor 10), and the z-direction represents the height direction (up and down direction) of the bag removal device 1. (Basic configuration) Figure 1 is a top view showing an example of the basic configuration of the bag removal device of the present invention. Figure 2 is a side view showing an example of the basic configuration of the bag removal device of the present invention. The basic configuration of the bag removal device 1 includes a main conveyor 10, an upper conveyor 20, a cutter mechanism 30, and a roller mechanism 50. The main conveyor 10 comprises a conveyor belt 11 and two shafts 12 and 13 located on the inside of both ends of the conveyor belt 11 in the x-direction. The two shafts 12 and 13 are rotatably mounted to the frame 15 of the main conveyor 10. By rotating either shaft 12 or 13, the upper part of the conveyor belt 11 can be moved in the x-direction. This allows the main conveyor 10 to transport the packaged goods 201 placed on the upper part of the conveyor belt 11 in one direction. The main conveyor 10 may also have an incline 11a. The incline 11a is a slope whose height increases as it moves forward in the transport direction, and extends beyond the upper conveyor 20 in the transport direction. Here, the packaging 201 represents a state in which the contents 202 are covered by a bag 203. The contents 202 can be food products such as meat, and may also be frozen. The bag 203 can be any bag used for food products, such as nylon or polyethylene film. The upper conveyor 20 comprises a conveyor belt 21 and two shafts 22 and 23 located on the inner sides of both ends of the conveyor belt 21 in the x-direction. The two shafts 22 and 23 are rotatably mounted to the frame 25 of the upper conveyor 20. The upper conveyor 20 is located above the main conveyor 10, and by rotating either of the shafts 22 or 23, the lower side of the conveyor belt 21 can be moved forward in the conveying direction. A gap is set between the upper side of the conveyor belt 11 of the main conveyor 10 and the lower side of the conveyor belt 21 of the upper conveyor 20 so that the packaged object 201 can be held in place. The upper conveyor 20 may also be equipped with a tension mechanism 60, which will be described later. The width of the upper conveyor 20 is s