Bag removal device

Abstract

To provide a bag removal device to enable further reliable bag removing operation.SOLUTION: A bag removal device that removes bags from a package in which a content is packaged in the bags includes a main conveyor that conveys the package, a cutter mechanism that has a cutter that cuts at least parts of the bags of the package while being conveyed on the main conveyor, and a roller mechanism that separates and discharges the bags from the package after the bags are cut by the cutter. The roller mechanism includes a first roller provided with gears therearound, and a second roller provided with gears therearound and engaged with the first roller, and the bags are sent out through the first roller and the second roller that are rotating.SELECTED DRAWING: Figure 1

Description

Technical Field

[0004] ,

[0001] The present invention relates to a bag-removing device, and particularly to a bag-removing device for removing a bag from a package in which the contents are packaged in a bag.

Background Art

[0002] When taking out the contents put in a bag from the package, manual work is time-consuming and laborious, and the greater the quantity, the greater the burden on the operator. On the other hand, in the case of foods such as meat, it is necessary to perform the bag-removing operation without significantly damaging the contents.

[0003] For example, Patent Document 1 discloses a bag-removing device including a conveyor for conveying a package, a cutter for cutting open the bag by contacting the package being conveyed by the conveyor, and a roller disposed above the conveyor so as to contact the package with the bag cut open. The roller rotates about an axis that obliquely intersects the conveying direction of the package being conveyed by the conveyor, and the conveyor and the roller convey the package with the bag sandwiched therebetween in the conveying direction, and convey the contents in a direction intersecting the conveying direction, thereby separating the bag and the contents.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in Patent Document 1, since the bag is sandwiched between the roller and the conveyor, it is likely to slip between the roller and the conveyor, and there is a possibility that a reliable bag-removing operation cannot be performed. In particular, when oil from foods such as meat adheres to the roller or the conveyor, this tendency is likely to occur strongly.

[0006] In view of the above problems, the present invention aims to provide a bag removal device that enables more reliable bag removal work. [Means for solving the problem]

[0007] To achieve the above objective, one representative bag removal device of the present invention is a bag removal device that removes a bag from a package in which the contents are packaged in a bag, comprising: a main conveyor for transporting the package; a cutter mechanism having a cutter that cuts at least a portion of the bag of the package while it is being transported on the main conveyor; and a roller mechanism that separates and discharges the bag from the package after the bag has been cut by the cutter, wherein 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. The rotational axis directions of the first roller and the second roller are inclined with respect to the transport direction of the main conveyor, with the rear side in the transport direction being tilted laterally outward by a range of 3° to 20°. When the package reaches the cutter mechanism as the main conveyor transports it, the rotating cutter cuts the end of one lateral end of the package from above along the transport direction of the main conveyor. 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. A bag removal device characterized by the following features. [Effects of the Invention]

[0008] According to the present invention, a bag removal device can perform bag removal work more reliably. Other issues, configurations, and effects will be clarified by the following embodiments. [Brief explanation of the drawing]

[0009] [Figure 1] This is a top view showing an example of the basic configuration of the bag removal device of the present invention. [Figure 2] This is a side view showing an example of the basic configuration of the bag removal device of the present invention. [Figure 3] This is a top view showing an example of the bag removal device of the present invention, including the motor. [Figure 4] This is a front view showing an example of the bag removal device of the present invention, including the motor. [Figure 5] This is a side view showing an example of the roller mechanism of the bag removal device of the present invention. [Figure 6] A cross-sectional view showing an example of the roller section of the bag removal device of the present invention. [Figure 7]This is a side view showing an example of the cutter mechanism of the bag removal device of the present invention. [Figure 8] This is a top view showing an example of the cutter mechanism of the bag removal device of the present invention. [Figure 9] This is a side view showing an example of the upper conveyor of the bag removal device of the present invention. [Figure 10] This is a side view showing an example of the bag removal device of the present invention, including the frame configuration. [Figure 11] This is a front view showing an example of the bag removal device of the present invention, including the frame configuration. [Modes for carrying out the invention]

[0010] A description of an embodiment for carrying out the present invention will be given.

[0011] 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.

[0012] (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.

[0013] 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.

[0014] The main conveyor 10 includes a conveyor belt 11 and two shafts 12 and 13 provided inside both ends of the conveyor belt 11 in the x direction. The two shafts 12 and 13 are rotatably attached to the frame 15 of the main conveyor 10. By rotating and driving either of the shafts 12 and 13, the upper side of the conveyor belt 11 can be moved in the x direction. As a result, the main conveyor 10 can convey the package 201 placed on the upper part of the conveyor belt 11 in one direction. The main conveyor 10 may have an inclination 11a. The inclination 11a is an inclination whose height increases as it goes forward in the conveying direction and exists up to the front end in the conveying direction ahead of the upper conveyor 20.

[0015] Here, the package 201 shows a state where the contents 202 are covered with a bag 203. The contents 202 are foods such as meat and may be frozen products. Also, the bag 203 may be any bag used for foods or the like. For example, it is a film of nylon or polyethylene.

[0016] The upper conveyor 20 includes a conveyor belt 21 and two shafts 22 and 23 provided inside both ends of the conveyor belt 21 in the x direction. The two shafts 22 and 23 are rotatably attached to the frame 25 of the upper conveyor 20. The upper conveyor 20 is provided above the main conveyor 10, and by rotating and driving either of the shafts 22 and 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 package 201 is sandwiched. Also, the upper conveyor 20 can include a tension mechanism 60 described later. Note that the width of the upper conveyor 20 is set to be narrower than the width of the main conveyor 10 and also narrower than the width of the package 201.

[0017] The cutter mechanism 30 comprises a cutter 31, a shaft 32, and a variable mechanism 40. The cutter 31 is equipped with a rotating blade 31a with a circular circumference. The shaft 32 is mounted along the y-direction and fixed to the center of the cutter 31. When the shaft 32 is rotated, the cutter 31 rotates. The orientation of the rotating blade 31a is aligned with the conveying direction of the package 201. The cutter 31 is mounted above the main conveyor 10, to the side of one end of the upper conveyor 20 in the y-direction, slightly offset from the upper conveyor 20. A gap is provided above the conveyor belt 11 of the main conveyor 10 and below the cutter 31 for the package 201 to enter. This gap is set so that the cutter 31 can cut at least the upper part of the bag 203 of the package 201. The cutter mechanism 30 may also be equipped with a variable mechanism 40, which will be described later.

[0018] The roller mechanism 50 includes a first roller 51 and a second roller 52. The first roller 51 and the second roller 52 are cylindrical in shape and of the same length, and are installed side by side, one above the other, parallel to each other in the height direction (z direction). Furthermore, the first roller 51 and the second roller 52 can be configured with gears provided around their circumference, and are configured to mesh with each other. As a result, when one of the first roller 51 or the second roller 52 rotates, the other also rotates due to the meshing. The direction of rotation is the direction of arrow B in Figure 1, between the first roller 51 and the second roller 52 which are arranged vertically. The first roller 51 also has a shaft 53 (not shown in Figure 2), and the second roller 52 has a shaft 54.

[0019] Furthermore, the roller mechanism 50 is positioned slightly offset from the upper conveyor 20, on the opposite side in the y-direction from the cutter mechanism 30 (the other end in the y-direction). The roller mechanism 50 is also positioned on the other end in the y-direction from the main conveyor 10. The rotational axis directions of the first roller 51 and the second roller 52 of the roller mechanism 50 are set to be slightly inclined from parallel to the conveying direction (x-direction) of the conveyor. When viewed from above as shown in Figure 1, the longitudinal direction of the first roller 51 and the second roller 52 is set to be inclined outward in the lateral direction (y-direction) by an angle θ with respect to the x-direction on the rear side in the conveying direction. This angle can be applied, for example, in the range of 3° to 20°, or even 5° to 10°.

[0020] Furthermore, the position P between the first roller 51 and the second roller 52 is above the main conveyor 10 in the height direction. Preferably, position P is set near the center of the height direction of the package 201. In Figure 2, assuming that the upper conveyor 20 is lifted upward by the package 201, it is set above the lower side of the conveyor belt 21 of the upper conveyor 20.

[0021] (Configuration including the motor) Figure 3 is a top view showing an example of the bag removal device of the present invention, including the motor. Figure 4 is a front view showing an example of the bag removal device of the present invention, including the motor. Note that the conveyor belts 11 and 21 are simplified in Figure 3. Also, in Figure 4, the motor 102 and shaft 22 are omitted, and the frame is also simplified.

[0022] In addition to the basic configuration shown in Figures 1 and 2, the bag removal device 1 is equipped with motors 101, 102, 103, and 104, which serve as the drive unit.

[0023] The motor 101 is mounted on the side opposite to the roller mechanism 50 in the width direction (y direction) relative to the main conveyor 10, and on the extension of the shaft 13 on the forward side in the conveying direction of the main conveyor 10. When the motor 101 is operated, the shaft 13 rotates (in the direction of the arrow in Figure 2), and the conveyor belt 11 of the main conveyor 10 can be moved.

[0024] The motor 102 is mounted on the side opposite to the roller mechanism 50 in the width direction (y direction) relative to the main conveyor 10, on the extension of the shaft 22 on the rear side in the conveying direction of the upper conveyor 20. When the motor 102 is operated, the shaft 22 rotates (in the direction of the arrow in Figure 2), which can move the conveyor belt 21 of the upper conveyor 20.

[0025] The motor 103 is mounted on the side opposite to the roller mechanism 50 in the width direction (y direction) relative to the main conveyor 10, on the extension of the shaft 32 of the cutter mechanism 30. When the motor 103 is operated, the shaft 32 rotates, causing the cutter 31 of the cutter mechanism 30 to rotate. By aligning the rotation direction so that the lower side is in the same direction as the forward direction of transport of the main conveyor 10, the bag 203 can be cut by the cutter 31 while the package 201 is being transported in the forward direction. Alternatively, the rotation direction can be reversed, in which case the cutting force of the bag 203 by the cutter 31 can be increased while the package 201 is subjected to resistance.

[0026] Motors 101, 102, and 103 are installed on the same side of the main conveyor 10 in the width direction (y direction), and are arranged in the order of motor 102, motor 103, and motor 101 from rear to front in the conveying direction.

[0027] Motor 104 is located on the side opposite to motors 101, 102, and 103 in the width direction (y direction) of the main conveyor 10, and is mounted on the extension of the shaft 53 of the first roller 51 on the rear side in the conveying direction. When motor 104 is operated, the shaft 53 rotates, causing the first roller 51 to rotate, and the second roller 52, which meshes with the first roller 51, also rotates. Furthermore, motor 104 is positioned with its upper side slightly tilted towards the main conveyor 10, so as not to interfere with nearby workers.

[0028] (Roller mechanism) Figure 5 is a side view showing an example of the roller mechanism of the bag removal device of the present invention. Figure 6 is a cross-sectional view showing an example of the roller section of the bag removal device of the present invention. Figure 5 is a longitudinal side view of the roller mechanism 50. Figure 6 corresponds to the DD cross section of Figure 5.

[0029] The upper first roller 51 and the lower second roller 52 are configured to mesh with each other, but they can each be composed of meshing gears. The diameter (pitch circle diameter) and number of teeth of the first roller 51 and the second roller 52 can be the same, but here, the second roller 52 can be a gear with a smaller diameter (fewer teeth) than the first roller 51. For example, the diameter of the second roller 52 may be between 0.7 and 0.95 times, or even between 0.8 and 0.9 times, the diameter of the first roller 51. Experiments have confirmed that making the diameter of the lower second roller 52 smaller than the diameter of the upper first roller 51 improves the meshing. This is thought to be because it makes it more difficult for the packaging 201 to come into contact with the second roller 52, making it easier for the bag 203 to be gripped between the first roller 51 and the second roller 52.

[0030] In Figure 6, involute gears are used, with the first roller 51 having 25 teeth and the second roller 52 having 22 teeth. Since the modules are the same, the diameters are proportional to this. Also, in Figure 6, the right side is the main conveyor 10 side.

[0031] When the motor 104 is activated, the shaft 53 rotates, causing the first roller 51 to rotate in the direction of the arrow in Figure 6. As a result, the second roller 52, which meshes with the first roller 51, rotates in the opposite direction to the first roller 51, also indicated by the arrow in Figure 6. Consequently, a force is generated between the first roller 51 and the second roller 52 in the direction of the arrow indicated by B in Figure 6. Therefore, the bag 203 that reaches the roller mechanism 50 is caught between the first roller 51 and the second roller 52 as it passes through, and is transported in the direction of the large arrow B shown in Figure 6.

[0032] (Variable mechanism of the cutter mechanism) Figure 7 is a side view showing an example of the cutter mechanism of the bag removal device of the present invention. Figure 8 is a top view showing an example of the cutter mechanism of the bag removal device of the present invention.

[0033] The cutter mechanism 30 is equipped with a variable mechanism 40, which includes a fixed shaft 41, a boss 42, an adjustment plate 43, a frame 44, a mounting plate 45, and a stopper 46.

[0034] The frame 44 is provided on the side of the motor 103 that faces the cutter 31, and extends beyond the motor 103 on both sides in the x-direction.

[0035] The adjustment plate 43 is attached to the frame 44 and extends outwards on one end in the x-direction (the rearward side in the transport direction in the example of Figures 7 and 8). The mounting position (especially the position in the x-direction) may be adjusted by a configuration consisting of a screw and a groove extending in the x-direction. A boss 42 is fixed to the end of the adjustment plate 43 that extends beyond the frame 44.

[0036] The boss 42 is a component that can be rotatably mounted on a fixed shaft 41 extending in the y direction. For example, it can be rotated via a bearing or the like. The center of the boss 42 becomes the pivot center E, and it is configured to be offset in the x direction from the center of the cutter 31.

[0037] The fixed shaft 41 has a threaded portion 41a at one end, which is fixed to the base frame 80, as described later. The shaft portion 41b is rotatably attached to the boss 42. In the examples shown in Figures 7 and 8, the fixed shaft 41 is located on the rear side in the transport direction (x-direction) relative to the center of the cutter 31.

[0038] The mounting plate 45 is attached to the frame 44 and extends beyond the other end in the x-direction (towards the front in the transport direction in the example of Figures 7 and 8). A stopper 46 is fixed to the end of the mounting plate 45 that extends beyond the frame 44. The mounting plate 45 is equipped with a fixing adjustment member 45a, such as a nut, which allows the position of the stopper 46 in the z-direction to be adjusted.

[0039] The stopper 46 is a component that performs the function of a stopper by having its lower end abut against a receiving portion 91 fixed to the foundation frame 80, and is fixed to the mounting plate 45. Specifically, it can be configured in the shape of a bolt having a female threaded portion, and the female threaded portion is screwed into the fixing adjustment member 45a so as to be adjustable in the z direction. In this case, the lower end becomes the head of the bolt.

[0040] With the above configuration, the pivot center E is located on one side in the x-direction, and the stopper 46 is located on the other side in the x-direction, relative to the motor 103 and cutter 31. The entire cutter mechanism 30 rotates around the pivot center E, allowing the cutter 31 to move up and down. When no work is being performed, the stopper 46 is in contact with the receiving part 91 due to the weight of the motor 103 and cutter 31. On the other hand, when the packaged body 201 passes towards the lower end of the cutter 31, the stopper 46 can be lifted against the weight of the motor 103 and cutter 31 in response to the resistance during cutting. At this time, the stopper 46 moves away from the receiving part 91 and upward.

[0041] (Tension mechanism of the upper conveyor) Figure 9 is a side view showing an example of the upper conveyor of the bag removal device of the present invention. Here, the tension mechanism 60 provided in the upper conveyor 20 will be described. Note that the tension mechanism 60 is not shown in Figures 1 to 4.

[0042] The tension mechanism 60 includes a roller 61, a support frame 62, a spring 63, an adjustment part 64, and a mounting part 65.

[0043] The roller 61 is cylindrical in shape, and the cylinder is rotatably mounted on the support frame 62. The central axis at this time is in the y-direction. The outer circumference of the roller 61 is in contact with the inside of the lower conveyor belt 21 of the upper conveyor 20. As the conveyor belt 21 moves, the outer circumference of the roller 61 comes into contact with it and rotates in accordance with the movement of the conveyor belt 21.

[0044] The support frame 62 is configured to rotate around a pivot center G relative to the frame 25 of the upper conveyor 20. The support frame 62 has a shape that bends in the middle, and the pivot center G is located at the bend. One end of a spring 63 is attached to the end of the support frame 62 above the pivot center G, and a roller 61 is attached to the end forward in the conveying direction from the pivot center G.

[0045] The spring 63 is a tension spring, with one end attached to the support frame 62 and the other end attached to one end of the adjustment part 64. The spring 63 is provided along the x-direction, and the longer the spring, the more the elastic force acts in the direction of compression.

[0046] The adjustment part 64 has a spring 63 attached to one end and is fixed to the mounting part 65 at the other end. The adjustment part 64 has a male screw portion and is fixed using a nut or the like. This makes it possible to adjust the position in the x direction relative to the mounting part 65 and to change the elastic force of the spring 63.

[0047] The mounting section 65 is fixed to the frame 25 of the upper conveyor 20. The adjustment section 64 is fixed at a position higher than the conveyor belt 21, making it easier to adjust the elastic force of the spring 63. The frame 25 of the upper conveyor 20 is fixed to the base frame 80, which will be described later.

[0048] As shown in Figure 9, two tension mechanisms 60 are provided along the x-direction. This biases the lower side of the conveyor belt 21 inward or downward at two points. The number of tension mechanisms 60 may be one or three or more. Providing multiple mechanisms ensures reliable biasing over a predetermined distance.

[0049] With the above configuration, as the package 201 passes under the upper conveyor 20, an upward force is applied due to the thickness of the package 201. At this time, the roller 61 rises, causing the support frame 62 to rotate around the pivot center G (clockwise in Figure 9). As a result, the upper end of the support frame 62 moves in a direction that stretches the spring 63, and a force acts in the direction that compresses the spring 63. This transmits a force to the support frame 62 in the opposite direction of rotation (counterclockwise in Figure 9) that returns it to its original position. This causes the roller 61 to exert a force in a direction that presses down on the package 201, making it less likely for the package 201 to shift.

[0050] (Frame configuration) Figure 10 is a side view showing an example including the frame configuration of the bag removal device of the present invention. Figure 11 is a front view showing an example including the frame configuration of the bag removal device of the present invention.

[0051] The base frame 80 of the bag removal device 1 is a frame on the bag removal device 1 side that allows the height of the main conveyor 10 to be set to a height that is easy to work at. The base frame 80 can be made of pipe members 80a, etc., and casters 85 can be provided at the bottom to make it easy to move. The base frame 80 is fixed to the frame 15 of the main conveyor 10, the frame 25 of the upper conveyor 20, the fixed shaft 41 of the variable mechanism 40, and the frames 55 and 56 of the roller mechanism 50. Note that in Figure 11, the fixing of the upper conveyor 20 to the frame 25 is omitted from the illustration. Each motor 101, 102, 103, and 104 is also fixed to the base frame 80 side.

[0052] (action) Next, the operation of the bag removal device 1 will be explained. Initially, as shown in Figures 1 and 3, the packaged body 201 is positioned on the main conveyor 10, closer to the front in the transport direction than the upper conveyor 20. When the motor 101 is activated from this state, the upper conveyor belt 11 of the main conveyor 10 moves in the direction of arrow A1, and the packaged body 201 moves in the direction of arrow A1 accordingly. Initially, by moving along the inclined surface 11a shown in Figure 2, the device is set to make it easier for the packaged body 201 to enter the area below the upper conveyor 20.

[0053] Next, when the package 201 reaches the upper conveyor 20, it is transported sandwiched between the upper conveyor belt 11 of the main conveyor 10 and the lower conveyor belt 21 of the upper conveyor 20. At this time, the conveyor belt 21 of the upper conveyor 20 can be moved by operating the motor 102. Here, the upper conveyor belt 11 of the main conveyor 10 and the lower conveyor belt 21 of the upper conveyor 20 are set to have the same transport direction and transport speed. The upper conveyor 20 is equipped with the tension mechanism 60 described in Figure 9, which makes it possible to transport the package 201 while holding it downwards and preventing it from shifting.

[0054] Next, the packaging 201 reaches the cutter mechanism 30. The cutter mechanism 30 can rotate the cutter 31 by operating the motor 103. The rotating cutter 31 of the cutter mechanism 30 cuts the packaging 201 from above along the transport direction (x direction) near one end in the width direction (y direction). As a result, at least the upper side of the bag 203 of the packaging 201 is completely cut along the transport direction near one end in the width direction (y direction). At this time, by providing the variable mechanism 40, it is possible to cut along the upper side of the bag 203 of the packaging 201, preventing the contents 202 from being cut more than necessary and preventing the cutting resistance from becoming unnecessarily large.

[0055] Next, the packaging 201 reaches the roller mechanism 50. The roller mechanism 50 rotates one of its rollers, the first roller 51, by operating the motor 104, and simultaneously rotates the second roller 52 that meshes with it. The first roller 51 and the second roller 52 grip the bag 203 at the other end (opposite side from the cutter mechanism 30) in the width direction (y direction) of the packaging 201. At this time, the inclination angle θ of the first roller 51 and the second roller 52 (Figures 1 and 3) makes it possible to easily grip the other end of the bag 203 in the width direction, even if the width of the packaging 201 is different.

[0056] The roller mechanism 50 separates the bag 203 of the packaging 201, which has been cut near one end, while leaving the contents 202 on the main conveyor 10. At this time, the bag 203 passes between the first roller 51 and the second roller 52 and is discharged to the outside of the main conveyor 10 in the lateral direction (width direction) (direction of arrow B in Figures 1 and 3). Since the bag 203 passes between the interlocking rollers, reliable discharge is possible. Meanwhile, the contents 202 are carried in the transport direction, sandwiched between the main conveyor 10 and the upper conveyor 20. After passing through the roller mechanism 50, the upper conveyor 20 disappears, and the contents 202 are transported to the front of the transport direction (direction of arrow A2 in Figures 1 and 3) by the main conveyor 10 alone.

[0057] In this way, it becomes possible to perform a bag removal operation in which the bag 203 is removed from the packaging 201 and only the contents 202 can be extracted.

[0058] (effect) With the above-described embodiment, the bag 203 can be reliably removed from the packaging 201. In particular, the roller mechanism 50, in which two rollers interlock, avoids the risk of the bag 203 becoming unable to be discharged due to slippage, even if oil is present on it. Furthermore, reducing the diameter of the lower roller improves the gripping action. Also, by providing the roller mechanism 50 on the side, the contents 202 remain on the main conveyor 10, preventing unnecessary damage to the contents 202 and making subsequent operations easier. At this time, arranging the rollers diagonally makes it easier to grip the bag 203 according to the size of the packaging 201. Furthermore, the tension mechanism 60 of the upper conveyor 20 ensures that the packaging 201 does not shift, allowing for reliable bag removal. In addition, the variable mechanism 40 of the cutter mechanism 30 makes it possible to accurately cut the bag 203 of the packaging 201.

[0059] As described above, embodiments of the present invention have been explained, but the present invention is not limited to the embodiments described above, and various other modifications are also included. For example, it is not limited to having all the configurations provided in the embodiments described above. Furthermore, it is possible to delete or replace some of the configurations of a certain embodiment with other configurations.

[0060] For example, although food was shown as contents 202, the present invention can also be applied to contents other than food.

[0061] Furthermore, if the packaging 201 and contents 202 are not easily shifted relative to the main conveyor 10, the upper conveyor 20 may not be necessary for the application. [Explanation of Symbols]

[0062] 1 Bag removal device 10 Main conveyor 11 Conveyor belt 15 frames 20 Upper conveyor 21 Conveyor belt 25 frames 30 Cutter mechanism 31 Cutter 40 Variable mechanism 41 Fixed axis 42 Boss 46 Stopper 50 Roller mechanism 51 First Laura 52 Second Laura 60 Tension Mechanism 61 Laura 62 Support Frame 63 Spring 80 Foundation Frame 101, 102, 103, 104 Motors 201 Packaging 202 Contents 203 bags

Claims

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.

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