Adhesive tape removal device, packaging system, and adhesive tape removal method

Abstract

The present invention provides an adhesive tape removal device, a packaging system, and an adhesive tape removal method that can more effectively remove adhesive tape from a film roll. [Solution] The device includes a receiving plate 60 that can assume both an insertion position, where it is inserted between the outermost film F1 of the film roll YB2 and the second film F2 that overlaps the outermost film F1 inside the film roll YB2, and a retracted position S1, where it is positioned outside the film roll YB2. A cutter blade 70a is positioned opposite the receiving plate 60 in the insertion position and moves in the transport width direction W to cut the outermost film F1 on the receiving plate 60 along the transport width direction W, making it possible to remove the adhesive tape TA along with the cut outermost film F1. The receiving plate 60 moves relative to the film roll YB2 in the transport height direction H through the roll start end K, or moves in the transport width direction W to change from the retracted position S1 to the insertion position.

Description

Technical Field

[0001] The present invention relates to an adhesive tape removing device used in a packaging system for packaging articles, a packaging system including the same, and an adhesive tape removing method.

Background Art

[0002] In a packaging machine used for pillow-packaging articles, a packaging film is supplied to continuously conveyed articles, the articles are wrapped in a tubular shape by this packaging film, center sealing and top sealing are performed on the tubular packaging film along the conveyance direction, and the articles are continuously packaged by cutting in the conveyance direction (for example, Patent Document 1).

[0003] In a film supply device that supplies a packaging film in this type of packaging machine, it is necessary to remove the original roll that has finished being supplied and replace it with a new original roll. However, generally, a new original roll is provided with an adhesive tape that fixes the roll start end to the outer peripheral surface of the original roll itself so that the packaging film does not unwind spontaneously during movement. When replacing the original roll, this adhesive tape must be removed before installing the new original roll in the film supply device, and this work requires a great deal of effort.

[0004] Here, for example, Patent Document 2 describes a device for removing the adhesive tape of a film roll. By using such a device, it is considered that the removal of the adhesive tape can be automated, leading to an improvement in the efficiency of the work of replacing the original roll.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

[0006] However, in the apparatus described in Patent Document 2, the adhesive tape is removed by inserting a scraper between the first and second rotations of the film roll and then moving the scraper towards the starting end of the roll to peel off the adhesive tape. However, this method may not effectively remove the adhesive tape.

[0007] Therefore, the present invention provides an adhesive tape removal device, a packaging system, and an adhesive tape removal method that enable the more effective removal of adhesive tape from a film roll. [Means for solving the problem]

[0008] An adhesive tape removal device according to one aspect of the present invention is an adhesive tape removal device that makes it possible to remove adhesive tape used to fix the roll start end to the outer surface of a film roll, which is a roll of packaging film used to wrap articles, and comprises a receiving plate provided to take both an insertion position, in which it is inserted between the first layer of film (hereinafter referred to as the outermost film) that forms the roll start end of the film roll and the second layer of film that overlaps the inside of the outermost film, and a retracted position, which is positioned on the outside of the film roll, and a cutter blade positioned opposite to the receiving plate in the insertion position, which moves in the width direction of the device to cut the outermost film on the receiving plate along the width direction of the device, and makes it possible to remove the adhesive tape together with the cut outermost film, wherein the receiving plate moves relative to the film roll, either in the longitudinal direction of the film along the circumferential direction of the film roll through the roll start end, or moves in the width direction of the device which is the width direction of the film roll, to move from the retracted position to the insertion position.

[0009] In the adhesive tape removal device described above, the dimension of the receiving plate in the width direction of the device may be larger than the dimension of the film roll in the width direction of the device.

[0010] In the adhesive tape removal device described above, the receiving plate may have a blade arrangement groove that extends in the width direction of the device and allows the tip of the cutter blade to be positioned inward when the outermost film is cut by the cutter blade.

[0011] In the adhesive tape removal device described above, the receiving plate may have an inclined surface such that the thickness of the receiving plate gradually decreases as it moves towards the tip side, which is the side inserted between the outermost film and the second layer of film when the device moves from the retracted position to the insertion position.

[0012] In the adhesive tape removal device described above, the receiving plate moves relative to the film roll in the longitudinal direction of the film when moving from the retracted position to the insertion position, and the receiving plate is composed of a first plate portion and a second plate portion separated in the width direction of the device, and in the retracted position, the first plate portion is positioned on one side of the device width direction relative to the adhesive tape, and the second plate portion is positioned on the other side of the device width direction relative to the adhesive tape, and in the insertion position, the first plate portion and the second plate portion may be in contact with or close to each other in the width direction of the device.

[0013] In the adhesive tape removal device described above, each of the first plate portion and the second plate portion has an outer region on the outside in the width direction of the device and an inner protruding region that protrudes inward in the width direction of the device from a part of the longitudinal direction of the film in the outer region, and in the insertion position, the inner protruding region of the first plate portion and the inner protruding region of the second plate portion may be in contact with or close to the width direction of the device.

[0014] In the above-described adhesive tape removal device, the inner protruding region may be positioned in the insertion position such that it does not interfere with the adhesive tape in the longitudinal direction of the film.

[0015] A packaging system according to one aspect of the present invention comprises a packaging machine body for packaging articles using a film roll made of packaging film, an adhesive tape removal device, and a recovery device for recovering the adhesive tape together with the outermost film cut by the adhesive tape removal device.

[0016] A method for removing adhesive tape according to one aspect of the present invention is a method for removing adhesive tape used to fix the roll start end to the outer surface of a film roll, which is a roll of packaging film used to package an article, and comprises: a receiving plate operation step in which a receiving plate is moved relative to the film roll from a retracted position where it is positioned outside the film roll to an insertion position where it is inserted between the first layer of film (hereinafter referred to as the outermost film) that forms the roll start end and the second layer of film that overlaps the inner side of the outermost film; a cutting step in which a cutter blade is positioned opposite the receiving plate in the insertion position and moved in the width direction of the device to cut the outermost film on the receiving plate along the width direction of the device; and a removal step in which the adhesive tape is removed together with the cut outermost film, wherein in the receiving plate operation step, the receiving plate is moved relative to the film roll either in the longitudinal direction of the film along the circumferential direction of the film roll through the roll start end, or in the width direction of the device which is the width direction of the film roll to change from the retracted position to the insertion position. [Effects of the Invention]

[0017] According to the above-described adhesive tape removal device, packaging system, and adhesive tape removal method, it is possible to remove adhesive tape from the film roll more effectively. [Brief explanation of the drawing]

[0018] [Figure 1] This is a schematic front view of the packaging system according to this embodiment, as seen from the direction of the transport width. [Figure 2]It is a front view showing an enlarged view of the adhesive tape removing device in the above packaging system. [Figure 3] It is a view showing an enlarged view of the adhesive tape removing device in the above packaging system, and is a view seen from arrow I in FIG. 2. [Figure 4] It is a view showing an enlarged view of the adhesive tape removing device in the above packaging system, and is a view seen from arrow II in FIG. 2. [Figure 5] It is a view showing an enlarged view of the receiving plate in the above adhesive tape removing device, where (a) is a front view and (b) is a cross-sectional view taken along line V-V of (a). [Figure 6] It is a front view for explaining the operation of each part in the above adhesive tape removing device, where (a) is a view when the receiving plate is in the retracted position, and (b) is a view when the receiving plate is inserted between the films from the retracted position shown in (a) to the intermediate position. [Figure 7] It is a view for explaining the operation of each part in the above adhesive tape removing device, where (a) is a view when the receiving plate is in the intermediate position, and (b) is a view when the receiving plate is moved in the conveyance width direction from the intermediate position shown in (a) to the inserted position. [Figure 8] It is a view for explaining the operation of each part in the above adhesive tape removing device, where (a) is a view when the receiving plate is in the inserted position, and (b) is a view when the cutter blade is operated from the inserted position shown in (a) to cut the outermost peripheral film. [Figure 9] It is a view showing an enlarged view of a modified example of the receiving plate in the above adhesive tape removing device.

Embodiments for Carrying out the Invention

[0019] Hereinafter, the packaging system 100 according to the embodiment of the present invention will be described in detail with reference to the drawings. (Overall Configuration) As shown in Figure 1, the packaging system 100 of this embodiment is a so-called horizontal bag-making and filling machine in which, as articles (items to be packaged) XA1 are sequentially conveyed, packaging film YA1 is continuously supplied and formed into a cylindrical bag, and sealing and cutting of the packaging film YA1 are performed at predetermined pitches along the longitudinal direction of the packaging film YA1 (hereinafter referred to as the longitudinal direction of the film). The packaging film YA1 is formed from a film-like material such as resin film or paper. Also in Figure 1, the side closer to the raw material roll YB1 (left side when facing the page of Figure 1) is considered upstream, and the side further away (right side when facing the page of Figure 1) is considered downstream.

[0020] Specifically, the packaging system 100 includes a packaging machine body 1 that continuously supplies a strip-shaped packaging film YA1, forms the packaging film YA1 into a cylindrical shape, and transports an article XA1, and places the article XA1 inside the cylindrical packaging film YA1 and seals it; an adhesive tape removal device 110 that prepares the raw material roll YB1 to be installed in the packaging machine body 1 by making the adhesive tape TA removable from the film roll YB2 that will become the raw material roll YB1; and a recovery device 120 that recovers and removes the adhesive tape TA from the adhesive tape removal device 110.

[0021] (Wrapping machine body) The packaging machine body 1 comprises an article supply unit 2, a packaging material supply unit 3, a packaging unit 4, and a control unit (not shown). In the packaging machine body 1, the various directions are defined as follows: the longitudinal direction of the strip-shaped packaging film YA1 is the conveying direction T, the width direction of the packaging film YA1 is the conveying width direction W, and the direction perpendicular to the conveying direction T and the conveying width direction W is the conveying height direction H.

[0022] Each part of the packaging machine body 1 is centrally controlled by a control unit. The control unit consists of a CPU, RAM, and ROM, and performs various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. RAM is used as the CPU's workspace. ROM stores the basic OS and programs executed by the CPU.

[0023] The article supply unit 2 transports articles XA1 at equal intervals and sequentially transports the articles XA1 to the downstream packaging unit 4. This article supply unit 2 is composed of, for example, a finger conveyor. Specifically, the article supply unit includes a transport surface with slits (not shown), a side guide (not shown) that guides the articles XA1 on this transport surface from the side, a drive sprocket 5, a driven sprocket (not shown), an annular chain 6 that is stretched across these sprockets and travels along it, a plurality of fingers 7 attached to the chain 6 at equal intervals, and a servo motor (not shown) that serves as a power source.

[0024] The drive sprocket 5 rotates due to the drive of a servo motor. The driven sprocket rotates in conjunction with the drive sprocket due to the movement of the chain 6. The chain 6 moves in a circulating manner due to the rotation of the drive sprocket. Multiple fingers 7 protrude upward from below the conveying surface through slits. These multiple fingers 7 move on the conveying surface due to the movement of the chain 6. As a result, the multiple fingers 7 push the article XA1 on the conveying surface and send it to the packaging section 4.

[0025] The packaging material supply unit 3 continuously supplies the packaging film YA1 to the downstream packaging unit 4. The packaging material supply unit 3 is equipped with a raw material shaft 8, a servo motor (not shown), and guide rollers 9, etc. The raw material shaft 8 rotatably holds the raw material roll YB1. Power is supplied to the raw material shaft 8 by the servo motor, which rotates the raw material roll YB1 it holds. This causes the packaging film YA1 to be fed out (stretched) from the raw material roll YB1. The guide rollers 9 appropriately change the transport direction of the raw material roll YB1, guiding it towards the packaging unit 4 and leading it to the supply port 14a of the bag maker 14.

[0026] Alternatively, instead of using the roll-driven method described above to unwind the packaging film YA1 from the roll YB1, a feed roller-driven method may be adopted, in which a separate feed roller is provided and the packaging film YA1 is pulled out by moving the feed roller. Furthermore, both the roll-driven and feed roller-driven methods may be employed.

[0027] The packaging unit 4 packages the articles XA1 supplied from the article supply unit 2 with packaging film YA1 supplied from the packaging material supply unit 3. As a specific example, the packaging unit 4 is equipped with a bag maker 14, pinch rollers 15, a center sealing device 16, a first conveying device 17, an upper pressing device 18, a top sealing device 19, and a second conveying device 20.

[0028] The bag maker 14 forms a cylindrical bag from the packaging film YA1 supplied from the packaging material supply unit 3, such that the edges on both sides in the film width direction (conveying width direction W) overlap each other. The bag maker 14 also supplies the article XA1 supplied from the article supply unit 2 to the packaging film YA1 that is being formed into a cylindrical bag. In one example, the bag maker 14 forms a regular pillow-type bag. The packaging film YA1, which is continuously supplied from diagonally above to join the article XA1, is received at the supply port 14a, and the bag maker 14 folds the film along the conveying direction so as to wrap around the article XA1 from above in the conveying height direction H. The bag maker 14 then overlaps the edges on both sides of the packaging film YA1 in the film width direction (conveying width direction W) and, in this example, guides it downward through a slit (not shown) provided in the bottom surface 141 of the bag maker 14, forming a cylindrical bag.

[0029] The pinch roller 15 is led out from the slit in the bottom portion 141 of the bag maker 14, and overlaps the edges on both sides in the film width direction of the overlapping packaging films YA1, and the edges on both sides The edges are given a conveying force.

[0030] The center sealing device 16 comprises plate members 161 provided on the left and right sides in the transport width direction W that constitute the transport surface of the packaging film YA1, a pair of bar sealers 16a positioned below the plate members 161, and a press roller 16b, and applies a center seal along the longitudinal direction of the film to the tubular packaging film YA1 formed downstream of the bag maker 14.

[0031] The first conveying device 17 places the packaging film YA1, which has been sealed in a center and formed into a cylindrical shape, together with the article XA1 wrapped in the packaging film YA1 on its conveying surface (reference numeral omitted) and conveys it toward the top sealing device 19, which will be described in detail later. The downstream end of this first conveying device 17 expands and contracts its conveying surface in the conveying direction in accordance with the box motion of the top sealing device 19, which will be described later.

[0032] The upper restraining device 18 is positioned above the first conveying device 17 and restrains the article XA1, along with the packaging film YA1, from above as it is being conveyed to the first conveying device 17. As a result, the article XA1 is conveyed while maintaining a horizontal position.

[0033] The top sealing device 19 is located downstream of the upper holding device 18. The top sealing device 19 performs top sealing (also called end sealing or lateral sealing) and cutting in the width direction (conveying width direction W, direction transverse to the packaging film YA1) of the packaging film YA1 at cut pitches corresponding to the length of the article XA1. As a result, a top sealed portion Ts is formed on the packaging film YA1 that encloses the article XA1, and a package (pillow packaging) ZA1 is manufactured.

[0034] The top sealing device 19 is, for example, a so-called box-motion type having a pair of upper and lower top sealers 19a and 19b. The pair of top sealers 19a and 19b, positioned above and below the cylindrical packaging film YA1, move along a predetermined trajectory while maintaining their sealing surfaces facing each other, performing top sealing and cutting in the transport width direction W, which is the width direction of the film, at cut pitches corresponding to the length of the article. The top sealing device 19 may also employ a method other than box motion, such as a rotary type or a linear reciprocating type.

[0035] The second conveying device 20 is located downstream of the top sealing device 19, which will be described later. This second conveying device 20 is a belt conveyor that places the finished package ZA1 from the top sealing device 19 onto the conveying surface 20a and transports it to the next process. The upstream end of the second conveying device 20 expands and contracts the length of the conveying surface 20a in the conveying direction in accordance with the box motion of the top sealing device 19.

[0036] (Adhesive tape removal device) Next, the adhesive tape removal device 110 will be described. The adhesive tape removal device 110 is a device for preparing the raw material roll YB1 which is installed in the packaging material supply section 3 of the packaging machine body 1. That is, as shown in Figures 2 to 4, the adhesive tape removal device 110 is a device that makes the adhesive tape TA removable from a film roll YB2 which has a roll of packaging film YA1 and an adhesive tape TA attached to the roll start end (the starting end portion when the packaging film YA1 is unwound from the roll) K on its outer surface. The adhesive tape TA is roughly rectangular in shape and is positioned at approximately the center of the transport width direction W, which is the roll width direction of the film roll YB2, between the roll start end K and the region E near the end of the first turn of film (hereinafter, outermost film) F1 which is circumferentially adjacent to the roll start end K, and extends along the circumferential direction of the film roll YB2. The film roll YB2 is supported in the adhesive tape removal device 110 so as to be rotatable around a support shaft 59 that extends in the transport width direction W.

[0037] More specifically, the adhesive tape removal device 110 comprises a receiving plate 60 inserted into the film roll YB2, a receiving plate support part 65 that supports the receiving plate 60, a cutter 70 positioned opposite the receiving plate 60, and a cutter driving member 75 that operates the cutter 70.

[0038] The receiving plate 60 is inserted through the roll starting end K in the device height direction, i.e., the transport height direction H, along the circumferential direction of the film roll YB2, between the outermost film F1, which is the first layer of film forming the roll starting end K of the film roll YB2, and the second layer of film F2, which overlaps the inside of the outermost film F1. In the adhesive tape removal device 110 of this embodiment, the outermost film F1 extends downward from the roll starting end K, and the receiving plate 60 can be inserted between the outermost film F1 and the second layer of film F2 from above in the transport height direction H.

[0039] The receiving plate 60 is separated into two parts in the transport width direction (device width direction) W, which is the width direction of the film roll YB2, and each part has a first plate portion 61 and a second plate portion 62 that are inserted between the outermost film F1 and the second film F2. In the state before the receiving plate 60 is inserted between the outermost film F1 and the second film F2, the first plate portion 61 is positioned on one side of the transport width direction W relative to the adhesive tape TA, and the second plate portion 62 is positioned on the other side of the transport width direction W relative to the adhesive tape TA, so that the first plate portion 61 and the second plate portion 62 are spaced apart in the transport width direction W.

[0040] As shown in Figure 5(a), the sum of the width dimension w1 and w2 in the first plate section 61 in the transport width direction W is greater than the dimension wY in the transport width direction W of the film roll YB2. In other words, the total width dimension when the first plate section 61 and the second plate section 62 are placed in contact with each other in the transport width direction W, that is, the total width dimension in the transport width direction W of the receiving plate 60, is greater than the dimension wY in the transport width direction W of the film roll YB2.

[0041] Furthermore, the first plate portion 61 has a blade arrangement groove 61a that extends over the entire area in the conveying width direction W. The blade arrangement groove 61a is recessed from the surface facing the upstream side in the conveying direction T of the first plate portion 61 toward the downstream side, and both ends of the blade arrangement groove 61a in the conveying width direction W open to the end faces on both sides of the first plate portion 61 in the conveying width direction W. As shown in Figure 5(b), the blade arrangement groove 61a has a roughly V-shaped cross-section, for example, where the groove width gradually narrows toward the bottom of the groove.

[0042] As shown in Figure 5(a), the second plate portion 62 has a blade arrangement groove 62a that extends over the entire transport width direction W, similar to the first plate portion 61, and both ends of the blade arrangement groove 62a in the transport width direction W open to the end faces on both sides of the second plate portion 62 in the transport width direction W. The blade arrangement grooves 61a and 62a are located at approximately the same position in the transport height direction H. The tips of the cutter blades 70a of the cutter 70, which will be described in detail later, are positioned inward in the blade arrangement grooves 61a and 62a.

[0043] Furthermore, as shown in Figure 5(b), the first plate portion 61 has an inclined surface 61b formed such that its thickness gradually decreases towards the front end (downward side) in the transport height direction H, which is the side inserted between the outermost film F1 and the second film F2. This inclined surface 61b is the side opposite to the film-facing surface 61c that faces the film roll YB2, and is inclined to approach the film roll YB2 as it goes downward in the transport height direction H. On the other hand, the film-facing surface 61c is a surface that widens in the transport height direction H. Therefore, the inclined surface 61b is formed to gradually approach the film-facing surface 61c as it goes downward, and the first plate portion 61 has the smallest thickness at its lower end. The inclined surface 61b is located below the blade arrangement groove 61a.

[0044] Similarly, the second plate portion 62 has an inclined surface 62b similar to the inclined surface 61b, which is formed such that its plate thickness gradually decreases as it moves towards the front end (downward side) in the transport height direction H.

[0045] Here, each of the first plate portion 61 and the second plate portion 62 has an outer region OA on the outside in the transport width direction W and an inner protruding region IA on the inside in the transport width direction W. The inner protruding region IA protrudes inward in the transport width direction W from the inside of the outer region OA in the transport width direction W, at the lower part which becomes part of the transport height direction H of the outer region OA. Furthermore, the inner protruding region IA of the first plate portion 61 and the inner protruding region IA of the second plate portion 62 face each other in the transport width direction W.

[0046] Each of the first plate portion 61 and the second plate portion 62 is formed from a thin metal plate, such as stainless steel, and is elastically bendable and deformable at least in the thickness direction (conveying direction T).

[0047] Returning from Figure 2 to Figure 4, the receiving plate support section 65 includes a first support member 65a that supports the receiving plate 60 from above, a second support member 65b provided on the wall surface 110a facing inward in the transport width direction W of the adhesive tape removal device 110, a first drive member (servo actuator, etc.) 65c that moves the first support member 65a in the transport height direction H relative to the second support member 65b, a second drive member (servo actuator, etc.) 65d that moves the second support member 65b in the transport direction T relative to the wall surface 110a, and a pair of third drive members (servo actuators, etc.) 65e that interlock the first plate portion 61 and the second plate portion 62 of the receiving plate 60 with respect to the first support member 65a and move them in the transport width direction W.

[0048] The first drive member 65c adjusts the position of the receiving plate 60 in the transport height direction H together with the first support member 65a. The second drive member 65d adjusts the position of the receiving plate 60 in the transport direction T together with the first support member 65a and the first drive member 65c.

[0049] A pair of third drive members 65e are provided on the first support member 65a at a distance in the transport width direction W. One of the third drive members 65e is interposed between the first support member 65a and the first plate portion 61, and the other third drive member 65e is interposed between the first support member 65a and the second plate portion 62. Each of the third drive members 65e operates the first plate portion 61 and the second plate portion 62, respectively, after the receiving plate 60 has been inserted between the outermost film F1 and the second film F2, as will be described in detail later.

[0050] Here, the first drive member 65c, the second drive member 65d, and the third drive member 65e are controlled by a control unit (not shown) (which may be the control unit of the packaging machine body 1 described above).

[0051] As described above, the receiving plate 60 can assume both positions: an insertion position S2 in which it is inserted between the outermost film F1 and the second film F2, and a retracted position S1 in which it is inserted between the outermost film F1 and the second film F2, as will be described in detail later.

[0052] The cutter 70 includes a cutter blade 70a for cutting the outermost film F1 on the film roll YB2, and a blade support member 70b for supporting the cutter blade 70a. The cutter blade 70a is positioned opposite the first plate portion 61 of the receiving plate 60 when the receiving plate 60 is inserted between the outermost film F1 and the second film F2. Specifically, in the initial position S11, the cutter blade 70a is positioned outside one side of the film roll YB2 in the transport width direction W, and its tip is located within the blade arrangement groove 61a of the first plate portion 61 when viewed from the transport width direction W.

[0053] The blade support member 70b holds the cutter blade 70a in a state in which at least the tip of the cutter blade 70a protrudes. Furthermore, the blade support member 70b may also be configured to hold the cutter blade 70a in a detachable manner so that the cutter blade 70a can be replaced.

[0054] The cutter drive member 75 is configured, for example, by a servo actuator and is supported by the wall surface 110a, causing the blade support member 70b to slide in the transport width direction W. More specifically, the cutter drive member 75 slides the cutter blade 70a together with the blade support member 70b from the initial position S11 to the other side of the transport width direction W beyond the film roll YB2. The position of the cutter drive member 75 in the transport direction T is adjusted by a front and rear drive member (not shown). The cutter drive member 75 is controlled by a control unit (not shown) (which may be the control unit of the packaging machine body 1).

[0055] (Recovery device) Returning to Figure 1, the recovery device 120 has a recovery roller 121 that winds up the outermost film F1 after it has been cut in the film roll YB2, for example, in a procedure that will be described in detail later. The configuration of the recovery device 120 is not particularly limited.

[0056] (How to remove adhesive tape) Next, we will explain the procedure for removing the adhesive tape TA from the film roll YB2 and preparing the raw material roll YB1. First, the film roll YB2 is set in the adhesive tape removal device 110. Then, the film roll YB2 is rotated around the support shaft 59 by a drive unit (not shown, such as a servo motor) to detect the position of the adhesive tape TA. The position of the adhesive tape TA is detected using, for example, a color sensor (not shown). After that, the position of the receiving plate 60 is adjusted by the first drive member 65c so that the receiving plate 60 is positioned above the adhesive tape TA and the roll start end K.

[0057] Then, as shown in Figure 6(a), the second drive member 65d of the receiving plate support 65 presses the receiving plate 60 against the outermost film F1 of the film roll YB2 above the roll start end K, toward the downstream side in the transport direction T. At this time, the receiving plate 60 is in contact with the outermost film F1 with some elastic deformation. This state is the position in which the receiving plate 60 is positioned outside the film roll YB2, i.e., the retracted position S1. In this retracted position S1, the first plate portion 61 and the second plate portion 62 of the receiving plate 60 are positioned outside the transport width direction W relative to the adhesive tape TA (see Figure 5).

[0058] Subsequently, as shown in Figure 6(b), the film roll YB2 is rotated so that the roll start end K faces upward, causing the receiving plate 60 to move downward in the transport height direction H relative to the film roll YB2. The first plate portion 61 and the second plate portion 62 of the receiving plate 60 are inserted between the outermost film F1 and the second film F2 through the roll start end K, and the receiving plate 60 is placed in the intermediate position SM.

[0059] At this time, as shown in Figure 7(a), at least the entire inner protruding region IA of the first plate portion 61 and the entire inner protruding region IA of the second plate portion 62 are positioned below the adhesive tape TA. Then, as shown in Figure 7(b), the third drive member 65e moves the first plate portion 61 and the second plate portion 62 in the transport width direction W until the inner protruding region IA of the first plate portion 61 and the inner protruding region IA of the second plate portion 62 come into contact, thereby setting the receiving plate 60 to the insertion position S2 (receiving plate operation step). In this insertion position S2, the blade arrangement groove 61a in the first plate portion 61 and the blade arrangement groove 62a in the second plate portion 62 are in communication in the transport width direction W. Also, in this insertion position S2, the outer region OA of the first plate portion 61 and the outer region OA of the second plate portion 62 are positioned so as not to interfere with the adhesive tape TA, i.e., outside the adhesive tape TA in the transport width direction W. Furthermore, in the intermediate position SM and insertion position S2, the inner protruding region IA of the first plate portion 61 and the inner protruding region IA of the second plate portion 62 are positioned so as not to interfere with the adhesive tape TA, i.e., they are positioned below the adhesive tape TA in the transport width direction W.

[0060] Then, as shown in Figure 8(a), the cutter 70 is operated by the cutter drive member 75 to achieve the initial position S11, such that the tip of the cutter blade 70a is positioned within the blade arrangement groove 61a of the first plate portion 61 in the receiving plate 60 when viewed from the transport width direction W. Subsequently, as shown in Figure 8(b), the cutter is operated from one side of the transport width direction W (the side of the first plate portion 61) to the other side (the side of the second plate portion 62), cutting the outermost film F1 below the adhesive tape TA along the transport width direction W (cutting step).

[0061] Finally, the adhesive tape TA is removed along with the last cut outermost film F1 (removal step). Specifically, for example, the recovery device 120 shown in Figure 1 takes in the outermost film F1 from the cut end K2, and the entire outermost film F1, along with the adhesive tape TA attached to it, is wound up from the film roll YB2 and then cut, thereby recovering the outermost film F1 and adhesive tape TA as unwanted parts. After that, the receiving plate 60 and cutter 70 are controlled to move away from the film roll YB2 and return to a predetermined initial position (a position where the next film roll YB2 can be received).

[0062] In this way, the outermost film F1 and adhesive tape TA are removed from the film roll YB2, resulting in the raw material roll YB1. With the packaging film YA1 now able to be drawn out from the raw material roll YB1 by a winding device (not shown), and with the packaging film YA1 fixed so that it cannot be drawn out any further, it is transported to the packaging material supply unit 3 by, for example, a robot and replaced with the existing raw material roll YB1, or it is automatically moved to the packaging material supply unit 3 and replaced with the existing raw material roll YB1. Although detailed explanations and illustrations are omitted, when replacing the raw material roll YB1, the supply of packaging film YA1 from the packaging material supply unit 3 may be interrupted. For example, the packaging film YA1 of the new raw material roll YB1 may be joined to the remaining packaging film YA1 of the existing raw material roll YB1. In other words, the packaging material supply unit 3 may be a revolver-type supply device or the like.

[0063] (Effects and Benefits) According to the packaging system 100 of this embodiment described above, the adhesive tape removal device 110 moves the receiving plate 60 from a retracted position S1, where the receiving plate 60 is positioned outside the film roll YB2, to an insertion position S2, where it is inserted between the outermost film F1 and the second layer of film F2. In this insertion position S2, the receiving plate 60 cuts the outermost film F1 with the cutter blade 70a. By receiving the cutter blade 70a with the receiving plate 60 in this way, the cutter blade 70a does not cut the second layer of film F2, allowing only the outermost film F1 to be cut smoothly. The adhesive tape TA is then collected along with the cut outermost film F1, and the adhesive tape TA can be removed from the film roll YB2. Therefore, the adhesive tape TA can be effectively removed from the film roll YB2, the raw material roll YB1 can be prepared automatically, and the labor required to prepare the raw material roll YB1 can be reduced.

[0064] Furthermore, the combined width of the first plate section 61 and the second plate section 62, which are the dimensions in the transport width direction W of the receiving plate 60, is larger than the dimension wY in the transport width direction of the film roll YB2. Therefore, the receiving plate 60 can receive the cutter blade 70a over the entire transport width direction W of the film roll YB2, and the outermost film F1 can be smoothly cut over the entire transport width direction W.

[0065] Furthermore, the first plate portion 61 and the second plate portion 62 of the receiving plate 60 have blade placement grooves 61a and 62a formed therein, respectively. Therefore, the tip of the cutter blade 70a can be positioned within these blade placement grooves 61a and 62a, and the cutter blade 70a can be operated with the tip of the cutter blade 70a positioned downstream of the outermost film F1 in the transport direction T, allowing the outermost film F1 to be cut smoothly by the cutter blade 70a.

[0066] Furthermore, the first plate portion 61 and the second plate portion 62 of the receiving plate 60 have inclined surfaces 61b and 62b formed on them such that their thickness gradually decreases towards the front end (downward side). Therefore, even if the gap between the outermost film F1 and the second film F2 is not sufficient, the first plate portion 61 and the second plate portion 62 can be smoothly inserted between the outermost film F1 and the second film F2 through the roll start end K.

[0067] Furthermore, in the insertion position S2, the first plate portion 61 and the second plate portion 62 of the receiving plate 60 come into contact in the transport width direction W, allowing the first plate portion 61 and the second plate portion 62 to form an integrated receiving plate 60, which in turn allows the cutter blade 70a to be stably received over the entire transport width direction W. In addition, at this time, the blade arrangement groove 61a of the first plate portion 61 and the blade arrangement groove 62a of the second plate portion 62 communicate in the transport width direction W, forming an integrated groove, which allows the cutter blade 70a to move smoothly in the transport width direction W.

[0068] Furthermore, each of the first plate portion 61 and the second plate portion 62 of the receiving plate 60 has an outer region OA and an inner protruding region IA, and in the insertion position S2, the inner protruding region IA of the first plate portion 61 and the inner protruding region IA of the second plate portion 62 come into contact. Therefore, in the insertion position S2, the outer region OA of the first plate portion 61 and the outer region OA of the second plate portion 62 are positioned so as not to interfere with the adhesive tape TA, preventing the adhesive tape TA from getting caught when the first plate portion 61 and the second plate portion 62 are moved closer together in the transport width direction W, and allowing the first plate portion 61 and the second plate portion 62 to move closer together and come into contact smoothly.

[0069] Furthermore, in the receiving plate 60 in the intermediate position SM and insertion position S2, the inner protruding regions IA of the first plate portion 61 and the second plate portion 62 are positioned below the adhesive tape TA so as not to interfere with the adhesive tape in the transport height direction H. In other words, the first plate portion 61 and the second plate portion 62 can be moved closer together in the transport width direction W at a position where the adhesive tape TA is not present. In this respect, the gap between the outermost film F1 and the second film F2 is smaller at the position where the adhesive tape TA is present, but in this embodiment, the first plate portion 61 and the second plate portion 62 can be moved at a position where the adhesive tape TA is not present without moving them at a position where the gap is smaller due to the presence of the adhesive tape TA, and the first plate portion 61 and the second plate portion 62 can be smoothly moved from the intermediate position SM to the insertion position S2.

[0070] Although embodiments of the present invention have been described in detail above with reference to the drawings, the configurations and combinations thereof in the above embodiments are merely examples, and additions, omissions, substitutions, and other modifications to the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited by the embodiments, but is limited only by the claims.

[0071] For example, the receiving plate 60 is not limited to being inserted between the outermost film F1 and the second film F2 by moving in the transport height direction H, but may be inserted between the outermost film F1 and the second film F2 from at least the longitudinal direction of the film along the circumferential direction of the film roll YA2. Specifically, for example, the receiving plate 60 may be inserted between the outermost film F1 and the second film F2 by moving in the transport direction T, which is the horizontal direction. Alternatively, the receiving plate 60 may be inserted between the outermost film F1 and the second film F2 from the transport width direction W. In this case, the receiving plate 60 is composed of a single plate-like member whose dimension in the transport width direction W is larger than that of the film roll YB2.

[0072] Furthermore, the first plate portion 61 and the second plate portion 62 of the receiving plate 60 do not necessarily have to be in contact in the transport width direction W when inserted in the insertion position S2, and may be close together with a slight gap between them. Also, as shown in Figure 9, in the receiving plate 60, at the ends in the transport width direction W on the side where the first plate portion 61 and the second plate portion 62 face each other, that is, at the inner ends in the transport width direction W, an engaging projection 60x may be formed on one of the first plate portion 61 and the second plate portion 62, and an engaging recess 60y corresponding to the shape of the engaging projection 60x may be formed on the other so that the engaging projection 60x engages (is accommodated). Specifically, the engaging projection 60x is V-shaped, for example, projecting from the end of one of the first plate portion 61 and the second plate portion 62 such that the dimension in the transport height direction H gradually decreases as it moves inward in the transport width direction W. The engaging recess 60y is V-shaped, for example, formed so that the width dimension in the transport height direction H gradually decreases as it moves outward in the transport width direction W from the end of the other of the first plate portion 61 and the second plate portion 62. By forming such engaging projections 60x and engaging recesses 60y, the blade arrangement groove 61a of the first plate portion 61 and the blade arrangement groove 62a of the second plate portion 62 can be reliably aligned.

[0073] Furthermore, the method is not limited to inserting the receiving plate 60 between the outermost film F1 and the second film F2 by rotating the film roll YB2 as in the above embodiment. The film roll YB2 may be fixed and the receiving plate 60 may be operated to insert the receiving plate 60 between the outermost film F1 and the second film F2. Also, when inserting the first plate portion 61 and the second plate portion 62 between the outermost film F1 and the second film F2, air may be blown between the outermost film F1 and the second film F2 to form a gap, or the outer surface of the end of the outermost film F1 may be adsorbed by an adsorption means to form a gap between the outermost film F1 and the second film F2.

[0074] Alternatively, a rotary cutter may be used for the cutter blade 70a, and the outermost film F1 may be cut by reciprocating the cutter blade 70a in the transport width direction W. [Industrial applicability]

[0075] According to the adhesive tape removal device, packaging system, and adhesive tape removal method of the present invention, it is possible to remove adhesive tape from a film roll more effectively. [Explanation of Symbols]

[0076] 1...Wrapping machine body 60…board 61...First plate part 61a...Blade arrangement groove 61b…Slope surface 62…Second plate part 62a...Blade arrangement groove 62b…Slanted surface 70a... Cutter blade 70b...Blade support member 100…Packaging systems 110... Adhesive tape removal device 120... Recovery device F1... outermost film F2...Second pass of film H... Conveying height direction IA...Inner protrusion area K... Roll start point OA...outer area S1...Evacuation position S2... Insertion position T... Conveying direction TA... Adhesive tape W...Conveying width direction YA1…Packaging film YB1... Raw material roll YB2...film roll

Claims

1. An adhesive tape removal device for a film roll, which is a roll of packaging film used to wrap articles, that makes it possible to remove the adhesive tape used to fix the starting end of the roll to the outer surface of the film roll, A receiving plate is provided to take both an insertion position, in which it is inserted between the first layer of film (hereinafter referred to as the outermost film) that forms the starting end of the film roll and the second layer of film that overlaps the inner side of the outermost film, and a retracted position, in which it is positioned outside the film roll. A cutter blade is positioned opposite to the receiving plate in the aforementioned insertion position, and moves in the width direction of the device to cut the outermost film on the receiving plate along the width direction of the device, making it possible to remove the adhesive tape together with the cut outermost film. Equipped with, The adhesive tape removal device moves the receiving plate from the retracted position to the insertion position by moving relative to the film roll, either in the longitudinal direction of the film along the circumferential direction of the film roll through the roll start end, or in the device width direction which is the width direction of the film roll.

2. The adhesive tape removal device according to claim 1, wherein the dimension of the receiving plate in the width direction of the device is larger than the dimension of the film roll in the width direction of the device.

3. The adhesive tape removal device according to claim 1 or 2, wherein the receiving plate has a blade arrangement groove that extends in the width direction of the device and allows the tip of the cutter blade to be positioned inward when the outermost film is cut by the cutter blade.

4. The adhesive tape removal device according to claim 1 or 2, wherein the receiving plate has an inclined surface formed such that the thickness of the receiving plate gradually decreases towards the tip side which is inserted between the outermost film and the second film when moving from the retracted position to the insertion position.

5. When the receiving plate moves from the retracted position to the insertion position, it moves relative to the film roll in the longitudinal direction of the film, The receiving plate is composed of a first plate portion and a second plate portion separated in the width direction of the device, In the retracted position of the receiving plate, the first plate portion is positioned on one side of the device width direction relative to the adhesive tape, and the second plate portion is positioned on the other side of the device width direction relative to the adhesive tape. The adhesive tape removal device according to claim 1 or 2, wherein in the receiving plate in the insertion position, the first plate portion and the second plate portion are in contact with or close to each other in the width direction of the device.

6. Each of the first plate portion and the second plate portion is, The outer region outside the width direction of the device, An inner protruding region that protrudes inward in the width direction of the device from a part of the longitudinal direction of the film in the outer region, It has, The adhesive tape removal device according to claim 5, wherein, in the insertion position, the inner protruding region of the first plate portion and the inner protruding region of the second plate portion are in contact with or close to each other in the width direction of the device.

7. The adhesive tape removal device according to claim 6, wherein, in the insertion position, the inner protruding region is positioned so as not to interfere with the adhesive tape in the longitudinal direction of the film.

8. A packaging machine body that packages goods using a film roll made of packaging film, The adhesive tape removal device according to claim 1 or 2, A collection device for collecting the adhesive tape together with the outermost film cut by the adhesive tape removal device, A packaging system equipped with the following features.

9. A method for removing adhesive tape used to fix the starting end of a film roll, which is a roll of packaging film for wrapping articles, to the outer surface of the film roll, A receiving plate operation step involves moving the receiving plate relative to the film roll, from a retracted position where it is positioned outside the film roll, to an inserted position where it is inserted between the first layer of film (hereinafter referred to as the outermost film) that forms the roll start end of the film roll and the second layer of film that overlaps the inner side of the outermost film. A cutting step in which the cutter blade is positioned opposite the receiving plate in the insertion position and moved in the width direction of the device to cut the outermost film on the receiving plate along the width direction of the device, A removal step of removing the adhesive tape together with the cut outermost film, Equipped with, In the receiving plate operation step, the method for removing adhesive tape involves moving the receiving plate relative to the film roll, through the starting end of the roll in the longitudinal direction of the film along the circumferential direction of the film roll, or moving it in the device width direction which is the width direction of the film roll, thereby changing the receiving plate from the retracted position to the insertion position.

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