Packaging band cutting device

Abstract

To provide a packaging band cutting device that can accurately detect the position of the packaging band. [Solution] A packaging band cutting device for cutting a packaging band wrapped around a packaging article that packages a product, wherein the distance sensor is moved from a measurement start point where the packaging band is not located on the packaging article toward a predetermined direction of the packaging article while measuring the distance to the distance sensor (steps S1 to S3), a first predetermined position of the distance sensor where the amount of change in distance measured by the distance sensor is equal to or greater than a first predetermined amount is stored (steps S5 and S6), and if the period during which the amount of change in distance measured by the distance sensor is less than a second predetermined amount is equal to or greater than a predetermined period (Yes in step S10), the first predetermined position is determined as one end of the packaging band (step S11).

Description

Technical Field

[0001] The present invention relates to an apparatus for cutting a packaging band wound around a packaged article in which products such as batteries are packaged, using a cutter.

Background Art

[0002] Patent Document 1 describes an apparatus for cutting open the side surface of a packaging paper that packages stacked sheets of paper. This cutting apparatus holds an annular cutter blade by a pair of holding members that mesh with a spline shaft rotated by a motor. That is, the cutter blade rotates together with the spline shaft and is held so as to be movable in the axial direction of the spline shaft. Therefore, when the cutter blade cuts through the packaging paper, the cutter blade is inserted between the sheets of paper packaged in the packaging paper, and then the cutter blade moves up and down along the sheets of paper. Therefore, even when the conveyance surface on which the packaging paper is placed is inclined, the packaging paper can be cut open without damaging the packaged paper bundle.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The cutting device described in Patent Document 1 is configured to cut the entire circumference of the packaging paper by inserting a cutter blade between the paper sheets packed in the packaging paper to be cut. As a result, the packaging paper and the cutter blade may overlap in the thickness direction of the packaging paper, and the accuracy of the position of the cutter blade for cutting the packaging paper is relatively acceptable. On the other hand, a cutter cuts by bringing the tip of the blade into contact with the object to be cut. The packaging band, which is the object to be cut by the cutter, is wrapped around a predetermined position on the packaged item. Therefore, if the packaged item is inclined with respect to the direction of movement of the cutter, the position of the packaging band will be different with respect to the direction of movement of the cutter compared to when the packaged item is not inclined. This may prevent the cutter from making proper contact with the packaging band, and thus the packaging band may not be cut.

[0005] This invention was made in view of the above-mentioned technical problems, and the object of this invention is to provide a packaging band cutting device that can accurately detect the position of the packaging band. [Means for solving the problem]

[0006] To achieve the above objective, this invention provides a packaging band cutting device for cutting a packaging band wrapped around a packaging article that packages a product using a cutter, further comprising: a distance sensor for measuring the distance to the packaging article; a sliding mechanism for moving the distance sensor along the packaging article; and a controller for identifying the position of the packaging band, wherein the controller comprises: a drive unit for moving the distance sensor from a predetermined measurement start point where the packaging band is not located on the packaging article, toward a predetermined direction of the packaging article while measuring the distance; a first storage unit for storing a first predetermined position of the distance sensor where the amount of change in the distance measured by the distance sensor is equal to or greater than a predetermined first predetermined amount; and a band confirmation unit for determining the first predetermined position as one end of the packaging band when the period during which the amount of change in the distance measured by the distance sensor is less than a predetermined second predetermined amount is equal to or greater than a predetermined period.

[0007] Furthermore, in this invention, the controller may further include a second storage unit that stores as the other end of the packaging band a second predetermined position of the distance sensor where, when one end of the packaging band is determined by the band determination unit, the amount of change in the distance measured by the distance sensor is equal to or greater than a predetermined third predetermined amount.

[0008] Furthermore, in this invention, the cutter is provided on the slide mechanism in the direction of movement by the slide mechanism, alongside the distance sensor, and the controller may further include a first calculation unit that determines the position of the cutter at the start or end of cutting the packaging band based on one end of the packaging band determined by the band determination unit and the distance between the packaging band and the cutter.

[0009] Furthermore, in this invention, the device further includes a drive mechanism that moves the cutter back and forth by the slide mechanism, and the controller may further include a second calculation unit that determines the position of the cutter in the front-rear direction at the start of cutting the packaging band or at the end of cutting the packaging band, based on the measured value at the time when the change in the distance measured by the distance sensor becomes greater than or equal to a first predetermined amount, and the distance between the end face of the distance sensor and the cutting edge of the cutter. [Effects of the Invention]

[0010] The packaging band cutting device in this invention moves a distance sensor from a predetermined measurement start point where the packaging band is not located on the packaged item, toward a predetermined direction of the packaged item, while measuring the distance to the packaged item. It stores a first predetermined position where the change in distance is equal to or greater than a first predetermined amount, and if the period during which the change in distance measured by the distance sensor is less than a second predetermined amount is longer than a predetermined period, the first predetermined position is determined as one end of the packaging band. Therefore, even if the packaged item is inclined, the position where the change in the measured value is equal to or greater than the first predetermined amount is limited to the packaging band, so the position of the packaging band can be identified based on the change in the measured value of the distance sensor, and the packaging band can be cut by bringing the cutter into contact with it. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a schematic diagram showing an example of a packaging band cutting device according to an embodiment of the present invention, where (a) is a top view showing a state in which a packaged item is placed on a conveyor, and (b) is a side view of (a) as seen from the right side. [Figure 2] Figure 2 is a flowchart illustrating an example of a control method for identifying the position of a packing band. [Figure 3] Figure 3 shows the coordinates stored in the controller, the distance between those coordinates, the cutting start position of the ultrasonic cutter's blade tip, and the cutting end position of the blade tip. [Figure 4] Figure 4 is a flowchart illustrating an example of control for determining the cutting start position, cutting end position, and movement speed of the ultrasonic cutter's cutting edge. [Figure 5] Figure 5 is a flowchart illustrating an example of a control method for cutting a packaging band. [Modes for carrying out the invention]

[0012] This invention will be described based on the embodiments shown in the figures. The embodiments described below are merely examples of how this invention can be implemented and do not limit it.

[0013] The packaging band cutting device in this embodiment of the invention is a device for cutting a packaging band wrapped around a packaged item that packages a product such as a vehicle battery. The packaging band cutting device 1 shown in Figure 1 is configured to cut a packaging band 5 that is wrapped around the upper lid 3 and lower lid 4, which are arranged vertically in an inner box 2 containing the product.

[0014] The top lid 3 and bottom lid 4 are provided as cushioning materials to suppress external forces acting on the inner box 2. They consist of flat sections 3a and 4a with an area larger than the top and bottom surfaces of the inner box 2, and vertical sections 3b and 4b that are bent vertically from the outer edges of the flat sections 3a and 4a so as to face the side wall surface 2a of the inner box 2. Therefore, when a load is applied from the side wall surface 2a of the inner box 2, the vertical sections 3b and 4b deform to absorb the load, preventing external forces from acting on the inner box 2. The top lid 3 and bottom lid 4 are also made of corrugated cardboard. Therefore, when a load is applied from above or below the inner box 2, the voids provided in the thickness direction of the corrugated cardboard are compressed to absorb the load, preventing external forces from acting on the inner box 2. Note that the inner box 2, top lid 3, and bottom lid 4 in Figure 1 are formed in a rectangular shape when viewed from above.

[0015] Two packing bands 5 are wrapped around the top lid 3 and the bottom lid 4, spaced apart in the longitudinal direction of the top lid 3 and the bottom lid 4. As described above, the top lid 3 and the bottom lid 4 have larger outer dimensions than the inner box 2. Therefore, the packing bands 5 are stretched across the top lid 3 and the bottom lid 4 in the vertical direction, leaving a predetermined gap between them and the side wall surface 2a of the inner box 2. The packing bands 5 are formed into an annular shape by wrapping a strip of resin material, such as polypropylene, around the band and heat-sealing the ends.

[0016] As described above, the packaged article 6 bundled and integrated by the packing band 5 is transported from the manufacturer or the manufacturing factory to the assembly factory by a truck, a ship, etc., and then is opened. The packaged article 6 transported to the assembly factory as such is transported to a process of cutting the packing band 5 by a conveyor or the like.

[0017] Fig. 1 schematically shows a state in which the packaged article 6 is transported by the conveyor 7 to a position where the packing band cutting device 1 is provided. (a) is a top view showing a state in which the packaged article 6 is placed on the conveyor 7, and (b) is a side view seen from the right side in (a). Note that guide walls (not shown) are provided at both ends of the conveyor 7 on the upstream side of the conveyor 7, etc., so that the inclination angle of the packaged article 6 with respect to the traveling direction of the conveyor 7 is limited within a predetermined angle. Further, when it is detected by a non-contact sensor or the like that the packaged article 6 has been transported to the position where the packing band cutting device 1 is provided, the conveyor 7 is temporarily stopped, and in that state, the packing band 5 is cut.

[0018] The packing band cutting device 1 shown in Fig. 1 includes a guide portion 8 provided parallel to the traveling direction of the conveyor 7, a drive device 9 movably provided along the traveling direction of the conveyor 7 and attached to the side surface of the guide portion 8 on the conveyor 7 side, and an ultrasonic cutter 10 and a laser distance sensor 11 attached side by side to the side surface of the drive device 9 on the conveyor 7 side.

[0019] The drive device 9 is provided movably in the longitudinal direction of the guide portion 8 (the traveling direction of the conveyor 7) by a slide mechanism such as a belt or a chain (not shown) provided in the guide portion 8. Further, the drive device 9 is configured to move the ultrasonic cutter 10 back and forth toward the conveyor 7 side, and is constituted by, for example, a hydraulic actuator or an electromagnetic actuator.

[0020] The ultrasonic cutter 10 has a cutting edge portion 10a formed sharply in the same manner as a normal cutter, and is configured to generate frictional force between the cutting edge portion 10a and a member in contact therewith by moving the cutting edge portion 10a back and forth at a high frequency by an actuator (not shown) to perform cutting. The cutting edge portion 10a is formed to be inclined to one side (the right side in FIG. 1(b)) from a reference line orthogonal to the traveling direction of the conveyor 7.

[0021] The laser distance sensor 11 has, for example, an irradiation unit (not shown) that irradiates an object with laser light and a light receiving unit (not shown) that receives the reflected light reflected from the object, and is configured to measure the distance to the object based on the angle of the reflected light received by the light receiving unit.

[0022] Based on the signal input from the above-described laser distance sensor 11, a controller 12 for controlling the slide mechanism, the drive device 9, and the ultrasonic cutter 10 is provided. This controller 12 is mainly composed of a microcomputer, and based on the signal input from the laser distance sensor 11 and a calculation formula (control flow) stored in advance, controls the amount of movement of the drive device 9 by the slide mechanism, controls the amount of movement of the ultrasonic cutter 10 by the drive device 9, and further controls the on / off of the ultrasonic cutter 10.

[0023] This packing band cutting device 1 first measures the posture (tilt angle with respect to the traveling direction) of the packed article 6 and the position of the packing band 5. A flowchart for explaining an example of the control is shown in FIG. 2. Here, as shown in FIGS. 1(b) and 3, the packed article 6 is described as being inclined such that the leading side approaches the guide portion side with respect to the traveling direction.

[0024] The control example shown in Figure 2 is executed when the packaged item 6 is transported to the location where the packaging band cutting device 1 is installed and the conveyor 7 is stopped. In the control example shown in Figure 2, first, the drive device 9 is moved to the measurement start point (step S1). This measurement start point is the portion between the packaging bands 5 in the direction of travel of the packaged item 6 (i.e., the portion where the packaging bands 5 are not located) and is stored in advance in the controller 12. This measurement start point is determined by pre-calculating the portion where the packaging bands 5 are not located based on the longitudinal dimensions of the packaged item 6, the allowable inclination angle, and the number of packaging bands 5. Note that the packaging bands 5 are wrapped around a predetermined area, and the positional accuracy of the packaging bands 5 when wrapping them around the packaged item 6 is not required. That is, although there is a large error in the position where the packaging bands 5 are wrapped, the positions where the packaging bands 5 are not wrapped can be identified.

[0025] Next, the coordinates of the measurement start point are stored (step S2). Specifically, the amount of movement of the drive unit 9 from its standby position and the measured value detected by the laser distance sensor 11 are stored. The coordinates stored in step S2 are shown as point A in Figure 3. Next, the drive unit 9 is moved at a constant speed to one side (the left side in the example shown in Figure 3) in the direction of travel of the packaged item 6 by the sliding mechanism (step S3). The measured value of the laser distance sensor 11 is also read during the period in which the drive unit 9 is being moved in this manner. This step S3 functions as the "drive unit" in this embodiment of the invention.

[0026] When the drive unit 9 moves to a position where the laser beam is shone onto the packaging band 5, the measured value of the laser distance sensor 11 changes rapidly, allowing the position of the packaging band 5 to be determined based on the measured value of the laser distance sensor 11. Therefore, following step S3, it is determined whether the amount of change in the measured value, which is the difference between the previous value and the current value of the laser distance sensor 11 in the control cycle, is greater than or equal to a predetermined first amount (step S4). That is, it is determined whether or not the laser beam has been shone onto the packaging band 5. Note that the first predetermined amount in step S4 can be set to an amount based on, for example, the maximum allowable inclination angle of the packaged item 6 and the moving speed of the drive unit 9.

[0027] If step S4 is negatively judged because the change in the measured value is less than a first predetermined amount, it is considered that the drive unit 9 has not moved to the position where the laser beam is irradiated onto the packaging band 5. Therefore, if a negative judgment is made in step S4, the process returns to step S3 and the drive unit 9 continues to move. Conversely, if step S4 is positively judged because the change in the measured value is greater than or equal to the first predetermined amount, the coordinates immediately preceding that point are stored (step S5), and the current coordinates are stored (step S6). Specifically, the amount of movement of the drive unit 9 from its standby position and the measured value detected by the laser distance sensor 11 are stored. In Figure 3, the coordinates stored in step S5 are shown as point B, and the coordinates stored in step S6 are shown as point C. Point C corresponds to the "first predetermined position" in this embodiment of the invention, and step S6 functions as the "first storage unit" in this embodiment of the invention.

[0028] On the other hand, there are cases where a positive judgment is made in step S4, such as when foreign matter is attached to the packaged item 6. In that case, it is thought that the measured value of the laser distance sensor 11 will change immediately and significantly as the drive unit 9 moves. In contrast, when measuring the distance to the packaging band 5, it is thought that the measured value of the laser distance sensor 11 will be within the range of change corresponding to the inclination angle of the packaged item 6 during the period when the drive unit 9 moves a distance equal to the width of the packaging band 5. Therefore, following step S6, it is determined whether the amount of change in the measured value is greater than or equal to a second predetermined amount (step S7). The second predetermined amount in step S7 may be the same value as the first predetermined amount, or it may be a slightly larger value than the first predetermined amount, taking into consideration the material and surface roughness of the packaging band 5.

[0029] If the change in the measured value is greater than or equal to the second predetermined amount, and a positive judgment is made in step S7, it is considered that the positive judgment was made in step S4 because foreign matter is attached to the packaged item 6, so the coordinates stored in steps S5 and S6 are cleared (step S8), and the system returns to step S5.

[0030] Conversely, if the change in the measured value is less than the second predetermined amount, and therefore judged negatively in step S7, the band determination counter is increased (step S9), and then it is determined whether the band determination counter is equal to or greater than a predetermined value (step S10). That is, it is determined whether the drive unit 9 has moved by an amount equivalent to the width of the packing band 5. Therefore, the predetermined value in step S10 is set to a value obtained by dividing the width of the packing band 5 by the movement speed and control cycle of the drive unit 9, or a value slightly smaller than that value.

[0031] If the band determination counter is below a predetermined value and a negative result is determined in step S10, the process returns to step S7. That is, steps S7, S9, and S10 are repeatedly executed until the drive unit 9 moves by the width of the packing band 5.

[0032] Conversely, if the band determination counter is above a predetermined value and a positive determination is made in step S10, it is determined that the object whose distance is being measured is the packaging band 5 (step S11). That is, it is confirmed that the coordinates stored in step S6, specifically the position of the laser distance sensor 11, are at one end of the packaging band 5. This step S11 functions as the "band determination unit" in this embodiment of the invention.

[0033] Next, it is determined whether the change in the measured value is equal to or greater than the third predetermined amount (step S12). Step S12 is a step to determine whether the drive device 9 has moved until the position where the laser beam is irradiated is the end of the packaging band 5. In other words, it is determined whether the change in the measured value has changed to an extent that corresponds to the distance between the packaging band 5 and the inner box 2. Therefore, the third predetermined amount in step S12 can be set to the same value as the first predetermined amount described above.

[0034] If step S12 is negatively determined because the change in the measured value is less than the third predetermined amount, step S12 is repeated. That is, the drive device 9 is moved until the position where the laser beam is irradiated is the end of the packaging band 5. Conversely, if step S12 is positively determined because the change in the measured value is greater than or equal to the third predetermined amount, the current coordinates are stored (step S13), and this routine is terminated. The coordinates stored in step S13 are shown as point D in Figure 3. This point D corresponds to the "second predetermined position" in this embodiment of the invention, and step S13 functions as the "second storage unit" in this embodiment of the invention.

[0035] As described above, the forward and backward movement trajectory and movement speed of the ultrasonic cutter 10 by the drive device 9 are determined according to the measured position of the packaging band 5. An example of the control for determining the movement trajectory and movement speed of the ultrasonic cutter 10 is shown in Figure 4. In the example shown in Figure 4, first, the inclination A of the packaged item 6 is calculated based on the coordinates of point A stored in step S2 and the coordinates of point B stored in step S5 (step S41). Specifically, the inclination A is calculated by dividing the distance B in Figure 3, which is obtained by subtracting the measured value of the laser distance sensor 11 at point A stored in step S2 from the measured value of the laser distance sensor 11 at point B stored in step S5, by the distance A in Figure 3, which is obtained by subtracting the amount of movement of the drive device 9 at point A stored in step S2 from the amount of movement of the drive device 9 at point B stored in step S5.

[0036] Next, the position of the cutting edge portion 10a of the ultrasonic cutter 10 after cutting is calculated (step S42). Specifically, the position of the cutting edge portion 10a of the ultrasonic cutter 10 in the front-rear direction is determined by subtracting the distance between the end face of the laser distance sensor 11 and the cutting edge portion 10a of the ultrasonic cutter 10 from the measurement value of the laser distance sensor 11 at point C stored in step S6 above. Also, the amount of movement of the drive device 9, i.e., the position of the cutting edge portion 10a of the ultrasonic cutter 10 in the direction of movement of the drive device 9, is determined by subtracting the distance between the measurement position of the laser distance sensor 11 and the cutting edge portion 10a of the ultrasonic cutter 10 in the direction of movement of the drive device 9 from the amount of movement of the drive device 9 at point B stored in step S5 above. This step S42 functions as the "first calculation unit" and the "second calculation unit" in this embodiment of the invention.

[0037] Next, the position of the cutting edge 10a of the ultrasonic cutter 10 before cutting is calculated (step S43). Specifically, the distance D in Figure 3 is calculated by multiplying the distance C, which is obtained by subtracting the amount of movement of the drive device 9 at point C (stored in step S6) from the amount of movement of the drive device 9 at point D (stored in step S13), by the slope A calculated in step S41. Then, the position of the cutting edge 10a of the ultrasonic cutter 10 in the front-rear direction calculated in step S42 is added to this distance D to determine the position of the cutting edge 10a of the ultrasonic cutter 10 in the front-rear direction before cutting. Furthermore, the position of the cutting edge 10a of the ultrasonic cutter 10 in the direction of movement of the drive device 9 calculated in step S42 is added to the distance C to determine the position of the cutting edge 10a of the ultrasonic cutter 10 in the direction of movement of the drive device 9 before cutting.

[0038] Then, in order to move the cutting edge 10a of the ultrasonic cutter 10 along the packaging band 5, the forward and backward movement speed of the ultrasonic cutter 10 is calculated (step S44), and this routine is terminated. Specifically, the forward and backward movement speed of the ultrasonic cutter 10 is calculated by multiplying the movement speed of the drive device 9 by the distance D and then dividing by the distance C.

[0039] Furthermore, as described above, if the cutting edge 10a of the ultrasonic cutter 10 is formed at an angle to the left in Figure 1(b) from a reference line perpendicular to the direction of travel of the conveyor 7, the direction of movement of the drive device 9 for cutting the packaging band 5 will be reversed. In other words, in step S42, the position before cutting is calculated, and in step S43, the position after cutting is calculated.

[0040] As described above, after determining the movement trajectory and movement speed of the cutting edge 10a of the ultrasonic cutter 10, the slide mechanism and drive device 9 are driven so that the cutting edge 10a of the ultrasonic cutter 10 moves along that movement trajectory. Figure 5 shows a flowchart illustrating a control example for cutting the packaging band 5. In the control example shown in Figure 5, first, the cutting edge 10a of the ultrasonic cutter 10 is moved to the pre-cutting position determined in step S43 (step S51). That is, the slide mechanism and drive device 9 are controlled based on the position of the cutting edge 10a of the ultrasonic cutter 10 determined in step S43.

[0041] Next, it is determined whether the cutting edge 10a of the ultrasonic cutter 10 has moved to the pre-cutting position (step S52). If it is determined negatively in step S52 because it has not moved to the pre-cutting position, the system returns to step S51. Conversely, if it is determined positively in step S52 because it has moved to the pre-cutting position, the ultrasonic cutter 10 is turned on (step S53) and moved to the post-cutting position determined in step S42 (step S54). In other words, the cutting of the packaging band 5 begins.

[0042] Next, it is determined whether the cutting edge 10a of the ultrasonic cutter 10 has moved to the post-cutting position (step S55). If it is determined negatively in step S55 because it has not moved to the post-cutting position, the process returns to step S54. Conversely, if it is determined positively in step S55 because it has moved to the post-cutting position, the packaging band 5 has been cut, so the ultrasonic cutter 10 is switched off (step S56), and the drive unit 9 is moved to its initial position (step S57), ending this routine.

[0043] In the example shown in Figure 1, since two packing bands 5 are wrapped around the packaged item 6, the control examples described in Figures 2, 4, and 5 are executed for each packing band 5.

[0044] As described above, by moving the laser distance sensor 11 along the side of the packaged item 6 from the area between the packing bands 5 on the packaged item 6 and measuring the distance to the packaged item 6, even if the packaged item 6 is tilted, the position where the change in the measured value exceeds a first predetermined amount is limited to the packing bands 5. Therefore, the position of the packing bands 5 can be identified based on the change in the measured value of the laser distance sensor 11. In other words, if the change in the measured value of the laser distance sensor 11 exceeds a first predetermined amount at a corner, which is the boundary between the front and side of the packaged item 6 in the direction of travel, it is possible to suppress the misidentification of that part as the position of the packing band 5, or there is no need to set up criteria for determining whether that part is not the packing band 5. [Explanation of Symbols]

[0045] 1. Packaging band cutting device 2a Side wall 2 Inner box 3 Top lid 3a,4a flat part 3b,4b Vertical part 4 Lower lid 5 Packing bands 6. Packaging items 7 Conveyor 8 Guide section 9. Drive unit 10 Ultrasonic cutter 10a Cutting edge 11. Laser distance sensor 12 controllers

Claims

1. A packaging band cutting device that cuts packaging bands wrapped around packaging items used to pack products using a cutter, A distance sensor for measuring the distance to the packaged item, A sliding mechanism for moving the distance sensor along the packaged item, The system further comprises a controller for determining the position of the packaging band, The aforementioned controller, A drive unit moves the distance sensor while measuring the distance from a predetermined measurement start point where the packaging band is not located on the packaged item, toward a predetermined direction of the packaged item, A first storage unit stores a first predetermined position of the distance sensor where the amount of change in the distance measured by the distance sensor is equal to or greater than a predetermined first amount, The device includes a band fixing unit that determines the first predetermined position as one end of the packaging band when the amount of change in the distance measured by the distance sensor is less than a predetermined second predetermined amount for a predetermined period of time or longer. A packaging band cutting device characterized by the following features.

2. A packaging band cutting device according to claim 1, The aforementioned controller, The device further includes a second storage unit that stores, as the other end of the packaging band, a second predetermined position of the distance sensor where the change in distance measured by the distance sensor is equal to or greater than a predetermined third amount when one end of the packaging band is determined by the band determination unit. A packaging band cutting device characterized by the following features.

3. A packaging band cutting device according to claim 1, The cutter is provided on the slide mechanism alongside the distance sensor in the direction in which it moves by the slide mechanism, The aforementioned controller, The system further includes a first calculation unit that determines the position of the cutter at the start or end of cutting the packaging band, based on one end of the packaging band determined by the band determination unit and the distance between the packaging band and the cutter. A packaging band cutting device characterized by the following features.

4. A packaging band cutting device according to claim 1, The device further includes a drive mechanism that moves the cutter back and forth via the aforementioned sliding mechanism, The aforementioned controller, The system further includes a second calculation unit that determines the front-rear position of the cutter at the start or end of cutting the packaging band, based on the measured value at the point when the change in distance measured by the distance sensor exceeds a first predetermined amount, and the distance between the end face of the distance sensor and the cutting edge of the cutter. A packaging band cutting device characterized by the following features.

Images