JP2005289607A - Tape winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape winding device for improving commercial values by stably supplying a tape when winding and binding the tape on the upper parts of bags filled with articles to form drawstring goods. <P>SOLUTION: In a tape supply passage between a roll supporting part 31 for supporting a roll R and a tape winding part 32 for cutting the tape T delivered from the supporting part 31 after wound on the neck of the bag, a tape drawing mechanism is provided for drawing the tape T from the roll R in such a manner that a guide roller 48 for guiding the tape T is moved from an initial position shown in a solid line to a position shown in a dashed line against the energizing force of a spring 54 and the roller 48 is returned to the initial position by the energizing force of the spring 54 when the bag is supplied. A forcible resetting means for forcibly resetting the roller 48 to the initial position has an arm member 56 for pushing the roller 48 back to the initial position and an air cylinder 55 for rocking the arm member 56 around a supporting shaft 52. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tape winding apparatus that binds an upper portion of a bag filled with an article with a tape, and belongs to the technical field of article packaging.

  2. Description of the Related Art Conventionally, there is a product in which a purse-like product is bound by wrapping a tape around a neck portion of a bag whose upper portion is squeezed into a neck shape after an article such as food is filled. As a tape winding apparatus used for producing such a product, for example, there is one disclosed in Patent Document 1.

  That is, as shown in FIG. 10, the tape winding apparatus A disclosed in Patent Document 1 is a roll support that rotatably supports a roll R of a single-sided adhesive tape T that is wound with the adhesive surface inside. A portion A1 and a tape winding portion A2 that is connected to the support portion A1 and winds and binds the tape T around the neck portion of the supplied bag B are provided. In the example shown in the figure, the bag B is shown in a cross section of the neck for convenience.

  A first guide roller C is provided in the vicinity of the roll support portion A1 to guide the tape T drawn out as indicated by an arrow a. A slit-shaped passage A2 'is provided at the front end of the tape winding portion A2 for receiving the supplied bag B as indicated by an arrow b so that the bag B can pass therethrough, and is slightly separated from the passage A2'. A second guide roller D for guiding the tape T guided by the first guide roller C toward the front end of the tape winding portion A2, and a side upstream of the passage A2 ′. A ring piece E is provided that guides the tape T in the direction of the passage A2 'and is loosely fitted to the support shaft E' so that the outer peripheral portion can protrude and retract into the passage A2 '.

  On the opposite side of the ring piece E and the passage A2 ', there is provided a first lever F that can swing around the support shaft F'. Further, in the downstream of the passage A2 ', it can swing around the support shaft G'. A second lever G having a cutter G ″ for cutting the tape T at one swing end, and swingable around a support shaft H ′ and wound around the bag B in cooperation with the second lever G. And a third lever H that presses the end of the tape T. The first and third levers F and H have springs I and J, and swing end portions are respectively indicated by arrows. On the other hand, the second lever G is held in the posture shown in the figure via a spring K.

  Thereby, first, the tape T pulled out while being peeled from the roll R by the movement of the supplied bag B in the path A2 ′ during the previous winding process passes through the second guide roller D, and then reaches the downstream end. Is in a state of being sandwiched between the outer peripheral portion of the ring piece E and the swinging end portion of the first lever F, and is waiting for the supply of the bag B.

  Then, when the bag B is supplied, as shown in FIG. 11, the bag B comes into contact with the ring piece E and the first lever F and pushes them to move through the passage A2 ′. Tape T is wound around the neck. In this case, when the bag B comes into contact with the ring piece E, the ring piece E swings around the support shaft E ′ so as to make an impact, so that uneven wear in this type of guide member, which has been a problem in the past, is caused. There is an effect that it is avoided.

  Next, in the process in which the bag B comes into contact with the second lever G and pushes the second lever G and moves through the passage A2 ′, the wound tape T is cut by the cutter G ″ and separated from the upstream side, and then the bag B side The upstream end of the tape T is squeezed by being sandwiched between the swing end portion of the second lever G and the swing end portion of the third lever H, and is bound by the tape T having a predetermined length. Product.

  On the other hand, the downstream end of the cut upstream tape T is sandwiched between the outer peripheral portion of the ring piece E and the swing end portion of the first lever F, and waits for the next supply of the bag B.

  In such a tape bundling apparatus A or the like, a friction brake for braking mischievous rotation of the roll R due to inertia is provided in the roll support part A1, and further, the roll support part A1 and the tip of the tape winding part A2 are provided. In some cases, a tape pull-out mechanism for securing a tape T to be wound around the bag B in advance is provided in the tape supply path between the two.

  As shown in an example in FIG. 12, there is a type in which the position of the guide roller M using the biasing force of the spring L moves in the tape drawing mechanism. That is, in the tape drawing mechanism, when the bag B is supplied, the guide roller M for guiding the tape T moves from the initial position indicated by the chain line to the position indicated by the solid line against the urging force of the spring L, and the guide roller The tape T can be pulled out from the roll R when M returns to the initial position by the biasing force of the spring L.

  As a result, after the bag B is supplied as indicated by the chain line and the bag B around which the tape T is wound around the neck moves as indicated by the solid line, the guide roller M is initially resisted against the biasing force of the spring L. By moving from the position, the tape T is supplied in the winding direction. On the other hand, when the downstream end of the upstream tape T wound and cut is sandwiched between the outer periphery of the ring piece E and the swinging end of the first lever F, the guide roller M is attached to the spring L. The tape T is pulled out from the roll R by returning to the initial position by the force.

JP 2001-301716 A

  By the way, if the guide roller M moved from the initial position is stably returned to the initial position again, the tape T having a predetermined length is always pulled out from the roll R and secured by such a tape pulling mechanism. The tape T can be wound around the neck of the bag B, but the pulling force for pulling out the tape T tends to increase as the diameter of the roll R decreases. It may not be possible to return to the initial position. In that case, the tape T having a predetermined length cannot be secured in the next winding process, and as a result, the winding lengths of the tape T are not uniform, and the appearance of the product is reduced or the products are normally bound. There may be a problem that it becomes impossible to do so.

  In order to solve this problem, it is conceivable to increase the urging force of the spring L. In this case, since the movement resistance when the guide roller M moves from the initial position increases, the tape T is wound. There is a concern that the bag B may be prevented from moving smoothly through the passage A2 ′, and the production efficiency may be reduced.

  Therefore, in view of the above situation, the present invention can stabilize the supply of the tape and improve the commercial value when winding the tape around the top of the bag filled with the article and binding it to make a purse-like product. An object is to provide a tape winding device.

  In order to solve the above problems, the present invention is configured as follows.

  First, the invention according to claim 1 wraps a roll support portion for supporting a roll-shaped tape and a tape fed from the support portion around a neck portion of a bag whose upper portion is squeezed into a neck shape. A tape winding portion to be cut, and a guide member that is disposed in a tape supply path between the roll support portion and the tape winding portion and guides the tape when the bag is supplied resists the biasing force of the spring. And a tape winding mechanism that pulls out the tape from the roll by returning the guide member to the initial position by the biasing force of the spring, and forcing the guide member to the initial position. Forcibly returning means for returning is provided.

  Next, according to a second aspect of the present invention, in the tape winding apparatus according to the first aspect, the forcible return means drives the push-back member and a push-back member that pushes the guide member back to the initial position. And the actuator is driven in synchronism with the supply of the bag to the tape winding portion.

  According to a third aspect of the present invention, in the tape winding apparatus according to the first or second aspect, a predetermined rotational resistance is provided for the support member that rotatably supports the roll in the roll support portion. A band-type friction brake is provided.

  First, according to the first aspect of the present invention, since the guide member in the tape drawing mechanism is forcibly returned to the initial position, the tape for the next winding from the roll to the spring used in the tape drawing mechanism is provided. Even when the urging force for pulling out is lost, the guide member is returned to the initial position. Therefore, since the length of the tape from the guide member to the position where the tape is wound around the neck of the bag is stabilized, it is possible to secure a tape having a predetermined length to be wound around the next bag. As a result, the problem that the winding length of the tape becomes uneven and the appearance of the product deteriorates or it can not be properly bundled is solved, so the tape supply is stabilized and the product value is improved. A tape winding apparatus capable of performing the above is realized.

  Next, according to the second aspect of the present invention, the forcible return means is further embodied, and the length of the tape wound around the neck portion of the bag can be stably secured each time the bag is supplied. As an actuator, for example, an air cylinder, a motor, a solenoid or the like is preferably applied.

  According to the invention described in claim 3, in order to brake the rotation of the mischievous roll due to inertia and absorb the slack of the drawn tape, it is simplified and generalized like a band-type friction brake. When a roll rotation braking mechanism is provided, the braking force of the rotation braking mechanism is superior to the biasing force of the spring of the tape pull-out mechanism, and the guide member is forced even if it does not return to the initial position. Thus, the initial position is returned. Therefore, the present invention has the above-described effects even for a tape winding device using the rotary braking mechanism that is not complicated in construction and does not cause a significant increase in cost.

  Hereinafter, a product production system using a tape winding apparatus according to an embodiment of the present invention will be described.

  As shown in FIG. 1, the product X produced by this product production system is narrowed down at a predetermined portion of the upper part B3 of the bag B in which the horizontal seal parts B1 and B1 are formed on the upper and lower sides and the lower part B2 is filled with articles. Then, a single-sided adhesive tape T is wound around the necked portion, that is, the neck portion B3 'to form a drawstring.

  As shown in FIG. 2, this product production system 1 includes a vertical bag making and packaging machine 2 and a tape binding machine 3 connected to the bag making and packaging machine 2. When the bag B filled with the articles is continuously produced, the tape binding machine 3 finishes the product X in the process of receiving the bag B and transferring it as indicated by the arrow c.

  The bag making and packaging machine 2 is of a well-known configuration, in which the left and right edges of the belt-shaped packaging material are overlapped and formed into a cylindrical shape, and the overlapping portion is moved in the longitudinal direction in the process of transporting the packaging material downward. After vertically sealing, sandwiching from both the front and rear sides and laterally sealing in the width direction, and cutting the vicinity of the seal portion in the width direction, forming an article that is dropped and supplied to the upper cylindrical packaging material At the same time as receiving, a bag B in which an article is enclosed is formed below.

  Since the tape binding machine 3 alternately transfers the bags B received from the bag making and packaging machine 2 from the receiving position P1 to the winding position P2, the tape binding machine 3 is arranged on the left and right sides in the transfer direction c, respectively. Transfer units 11 and 12 and a tape winding device 13 for winding tape T around neck B3 ′ of bag B are provided.

  First, the first and second transfer units 11 and 12 will be described. Since these have substantially the same configuration, the second transfer unit 12 will be described for convenience.

  The second transfer unit 12 includes a pair of upper and lower arm members (upwardly) each having a pair of shafts 22, 22, which are rotatably provided on the first support plate 21, and having a substantially V-shaped claw at the tip. 23, 23 are extended at a predetermined interval in the vertical direction. These arm members 23... 23 can be opened and closed via a driving means (not shown). When the arm members 23 are closed, they receive the bag B produced by the bag making and packaging machine 2 and squeeze the upper part B3 of the bag B into a neck shape. Hold it.

  The support plate 21 is attached to a lower surface of a mounting plate 2 ″ fixed to a lower portion of a base member 2 ′ that supports a sealing jaw that performs lateral sealing in the bag making and packaging machine 2, in a transfer direction c via a rail 24. Therefore, the second transfer unit 12 approaches and separates from the bag B to be produced and moves in the direction of arrow c.

  On the other hand, on the downstream side of the rail 24, a pair of rails 25, 25 are provided on the frame 3a of the tape binding machine 3, and a second support plate 26 is movable on the rails 25, 25 in the transfer direction c. It is attached. Both support plates 21 and 26 are connected by two sets of connecting rods 27 and 28. Of these, the connecting rod 28 transmits power for opening and closing the arm members 23.

  The second transfer unit 12 includes a first support plate 21, that is, an arm member 23, which is connected to the second support plate 26 when the second support plate 26 moves on the rails 25, 25 by driving means (not shown). As a result, the bag B is transferred from the receiving position P1 to the winding position P2.

  The tape winding device 13, which is a characteristic part of the present invention, is installed on the downstream side in the transfer direction c, has a roll support portion 31 and a tape winding portion 32 connected to the roll support portion 31, and has an overall shape. It is substantially L-shaped in plan view. Then, the drive means (not shown) can freely move between the solid line position, that is, the standby position P3 and the chain line position, that is, the advance position P4, through a pair of rails 33, 33 supported by the frame 3a.

  The roll support portion 31 is disposed so as to protrude outward from the frame 3a. As shown in FIG. 3, the roll support portion 31 and a single surface that is erected on the mount 41 and wound up with the adhesive surface inside. It has a rotating shaft 43 that rotatably supports a reel 42 on which a roll R of an adhesive tape T is placed.

  Further, when the roll R rotates by feeding out the tape T, a band 44 constituting a friction brake for braking mischievous rotation due to inertia is wound around the rotating shaft 43.

  A plurality of guide rollers 45 to 49 for guiding the tape T fed from the roll support portion 31 are provided upright on the supply path of the tape T between the roll support portion 31 and the tape winding portion 32.

  Further, as shown in FIGS. 3 and 4, an arm is swingably supported around a support shaft 52 by a bracket 50 provided on the gantry 41 and a support member 51 extending outward from the gantry 41. A spring 54 is interposed between the member 53 and the member 53. The guide roller 48 is rotatably supported on the swing end portion of the arm member 53. As a result, the guide roller 48 can be moved to the chain line position, for example, in accordance with the tension of the tape T, with the solid line position as the initial position, and the guide roller 48 is returned to the initial position by the biasing force of the spring 54. Thus, a tape pulling mechanism for pulling out the tape T from the roll R is configured.

  Further, an air cylinder 55 is attached to the bracket 50, and a swinging end portion of an arm member 56 swingably attached to the support shaft 52 is connected to a tip of a rod 55a in which the air cylinder 55 advances and retreats. Has been. The front end 56 a of the arm member 56 is L-shaped in side view, and the lower end portion thereof can be engaged with the side end surface of the arm member 53. Thus, when the air cylinder 55 is driven in synchronization with the supply of the bag B to the tape winding part 32, for example, as shown by a chain line in FIG. By retracting as shown, the guide roller 48 supported by the arm member 53 via the arm member 53 can be returned from the thin chain line position to the thick chain line position, that is, the initial position.

  As shown in FIG. 3, the tape winding part 32 is provided with a rectangular opening 61a in a substantially central part and passes the neck B3 'of the bag B on the upstream side so that the bag B It has a main body case 61 provided with a slit-like passage 61b for leading to the opening 61a.

  As shown in FIG. 5, in the main body case 61 of the tape winding portion 32, a guide roller 62 for guiding the tape T fed from the roll support portion 31 in the direction of the passage 61b, and a side of the passage 61b are provided. The first to fourth levers 63 to 66 are incorporated. In this case, the guide roller 62 is provided with a one-way clutch, and is rotatable only in the counterclockwise direction, that is, the arrow d direction in the figure. In the illustrated example, for convenience, the bag B is shown in the cross section of the neck B3 ′.

  The first lever 63 is swingable around the support shaft 63a, and biases the other swing end 63c in the direction of arrow e between one swing end 63b and a predetermined portion of the main body case 61. A spring 67 is provided in the passage 61b so as to be freely projectable. Further, a stopper 68 is provided in contact with the first lever 63 to restrict excessive swinging of the swinging end portion 63c in the direction of arrow e.

  The second lever 64 is swingable around the support shaft 64a, and biases the other swing end 64c in the direction of the arrow f between the one swing end 64b and a predetermined portion of the main body case 61. A spring 69 is provided in the passage 61b so as to be freely projectable. And the roller 70 supported by the spindle 70a is arrange | positioned in the position which receives the said rocking | fluctuation end part 64c on both sides of the channel | path 61b. The roller 70 includes a one-way clutch, and is rotatable only in the counterclockwise direction, that is, in the direction of the arrow g, and has a rubber layer 70b on the peripheral surface.

  The third lever 65 is swingable about the support shaft 65a, and biases the other swing end 65c in the direction of the arrow h between one swing end 65b and a predetermined portion of the main body case 61. A spring 71 is provided in the passage 61b so as to protrude freely. Further, a stopper 72 is provided in contact with the third lever 65 to restrict excessive swinging of the swinging end portion 65c in the direction of arrow h.

  The fourth lever 66 having a complicated shape compared to the levers 63 to 65 can swing around the support shaft 66a, and the fourth lever 66 can be moved between the first swinging end 66b and a predetermined portion of the main body case 61. 2. A spring that urges the swinging end portion 66c in the direction of arrow i so as to protrude into the passage 61b and swings the projection 66d and the swinging end portion 65c of the third lever 65 so as to be able to come into contact with each other. 73 is interposed. Further, a cutter 74 for cutting the tape T is supported by the third swinging end portion 66e. A stopper 75 is provided that contacts the fourth lever 66 and restricts excessive swinging of the second swing end portion 66c in the direction of arrow i.

  Further, the main body case 61 has a guide pin 76 in the tape supply path between the guide roller 62 and the first lever 63, a pin 77 adjacent to the side of the path 61b, and an entrance of the path 61b. In addition, guides 78 and 78 for facilitating the introduction of the bag B are provided.

  Next, the operation of the product production system 1 using the tape winding device 3 will be described.

  As shown in FIG. 2, when the bag B is produced by the bag making and packaging machine 2, the second transfer unit 12 of the tape binding machine 3 closes the bag at the receiving position P1 by closing the arm members 23 ... 23. B is received, and the upper part B3 is squeezed into a neck shape, and the bag B is gripped through the neck B3 ′, and the support plates 21 and 26 are movable on the rails 24, 25 and 25. Stops after moving to the winding position P2. On the other hand, the first transfer unit 11 moves from the winding position P2 to the receiving position P1 and receives the next bag B.

  Next, the tape winding device 13 that is movable on the rails 33 and 33 advances from the standby position P3 indicated by the solid line to the advance position P4 indicated by the chain line, whereby the upper and lower arm members 23 of the second transfer unit 12 are moved. ... the tip of the main body case 61 of the tape winding part 32 enters between 23, the tape T is wound around the neck B3 'of the bag B which is to move in the passage 61b, and then cut, so that the purse shown in FIG. A product X is obtained.

  That is, the operation of the tape winding device 13 will be described in detail. First, the downstream end of the tape T is sandwiched between the swinging end portion 64c of the second lever 64 and the roller 67 as shown in FIG. When the guide roller 48 is moved from the position indicated by the chain line in FIG. 3 to the initial position indicated by the solid line by the urging force of the spring 54, the roll R from the roll R to which the rotational resistance is applied by the band 44 in the roll support 31 is applied. T is pulled out, and the tape T on the tape supply path is substantially stably maintained at a predetermined length.

  As shown in FIG. 5, immediately before the bag B supplied to the tape winding portion 32 enters the passage 61b, the tape T fed from the roll support portion 31 is guided by the guide roller 62, the guide pin 76, The first lever 63 is sandwiched between the rocking end portion 64c of the second lever 64 and the roller 70 via the downstream end formed by the previous winding and cutting, and the rocking end portion 63c of the first lever 63. Is waiting in a state where the adhesive surface faces the bag B so as to close the passage 61b.

  Next, as shown in FIG. 6, when the bag B that has entered the passage 61 b abuts against the swinging end portion 63 c of the first lever 63 through the tape T and pushes away, the first lever 63 is moved by the spring 67. Oscillates in the direction of the arrow e ′ against the urging force. In the process, the tape T that has blocked the passage 61b starts to be wound around the neck B3 ′ of the bag B.

  Next, as shown in FIG. 7, after the bag B has passed, the first lever 63 swings in the direction of arrow e by the urging force of the spring 67 and then comes into contact with the stopper 68 and stops. When the bag B further moves through the passage 61b and abuts against the swinging end portion 64c of the second lever 64 via the tape T, the second lever 64 resists the biasing force of the spring 69. Swings in the direction of arrow f '. In the process, the tape T is sandwiched between the swinging end portion 64c of the second lever 64 and the roller 70 and is wound around most of the neck portion B3 ′ of the bag B.

  In that case, the guide roller 62 and the roller 70 rotate in the directions of arrows d and g, respectively, and supply the tape T smoothly. The second lever 64 after the bag B has passed is urged by the spring 69 in a direction opposite to the arrow f ', that is, in the direction of the arrow f described above, because the swing end 64c is urged. The tape T with the adhesive surface facing is wound around the neck B 3 ′ of the bag B, the downstream side of the wound tape T is bonded to the upstream side, and the upstream tape T is sandwiched between the roller 70 again. .

  Next, as shown in FIG. 8, when the bag B further moves in the passage 61 b, the bag B moves, the swing end 64 c of the second lever 64 biased by the spring 69 in the direction of arrow f, and the roller 70. A tensioned state is generated in the tape T between the holding portions. Then, when the bag B contacts and pushes the swinging end portion 65c of the third lever 65 and the second swinging end portion 66c of the fourth lever 66 through the tape T, the fourth lever 66 The cutter 74 swings in the direction of the arrow i ′ against the urging force and is supported by the third swinging end portion 66e of the fourth lever 66 advances in the above-described tensioned tape T direction. As the bag B passes, the third lever 65 swings in the direction of the arrow h ′ against the biasing force of the spring 71. Further, during the movement of the bag B, the guide roller 62 and the roller 70 rotate in the directions of arrows d and g, respectively.

  Further, as shown in FIG. 9, the bag B moves away from the swinging end portion 65 c of the third lever 65 and the second swinging end portion 66 c of the fourth lever 66, so that the tape T by the cutter 74 is moved. Cutting ends. In that case, as a result of the third lever 65, the swing end portion 65c is urged by the spring 71 in the direction of the arrow h, while the moving bag B pushes the second swing end portion 66c. Since the portion 66d is urged in the direction of the arrow i ', both the portions 65c and 66d are squeezed by sandwiching a portion where the tape T after cutting is insufficiently bonded.

  The bag B in which the winding process of the tape T has been completed is opened as the arm member 23... 23 of the second transfer unit 12, and as a purse-like product X, for example, a discharge chute (not shown) disposed at the winding position P 2. Will be discharged.

  Then, the third lever 65 urged in the direction of the arrow h stops while coming into contact with the stopper 72, and the fourth lever 66 urged in the direction opposite to the direction of the arrow i ′, that is, the direction of the arrow i described above, Then, it comes into contact with the stopper 75 and stops. Thereby, the state shown in FIG. 5 is obtained again.

  By the way, as described above, when the guide roller 48 constituting the tape drawing mechanism returns to the initial position, the tape T is drawn from the roll R and secured for the next winding. When the bag B is supplied, the tape T secured at the 48 guide rollers is supplied in the winding direction along with the movement of the bag B around which the tape T is wound around the neck B3 ′. The guide roller 48 moves from the initial position by the acting tension.

  In this case, as shown in FIGS. 3 and 4, the arm member 56 and the arm member 56 are arranged around the support shaft 52 as a forced return means for forcibly returning the guide roller 48 in the tape drawing mechanism to the initial position indicated by the solid line. Since the spring 54 used for the tape drawing mechanism has no urging force to draw the tape T for the next winding from the roll R, the guide roller 48 is in the initial state. It will be returned to the position. Accordingly, since the length of the tape T from the guide roller 48 to the position where the tape T is wound around the neck B3 ′ of the bag B is stabilized, the tape T having a predetermined length to be wound around the bag B is secured. can do. As a result, the problem that the winding length of the tape T becomes uneven and the appearance of the product X is deteriorated or cannot be normally bundled is solved, so that the supply of the tape T is stabilized and the product value is increased. A tape winding device 13 that can be improved is realized.

  For example, in synchronization with the supply of the bag B and the guide roller 48 moving from the initial position, the solid line position in FIG. 3 is set as the initial position of the arm member 56 on the air cylinder 55 side, and the guide roller 48 side indicated by the chain line By driving the air cylinder 55 to push the arm member 53, that is, the guide roller 48 back to the initial position, the guide roller 48 is reliably returned to the initial position. Therefore, whenever the bag B is supplied, the length of the tape T wound around the neck B3 ′ of the bag B can be stably secured. In addition to the air cylinder 55, a motor, a solenoid, or the like is preferably applied as an actuator for driving the arm member 56.

  In this embodiment, a roll that is simplified and generalized like a band 44 used as a friction brake in order to brake the rotation of the mischievous roll R due to inertia and absorb the slackness of the drawn tape T. An R rotational braking mechanism is provided. In this case, for example, as the diameter of the roll R decreases, the pulling force for pulling out the tape T tends to increase, so that the braking force by the band 44 is greater than the biasing force of the spring 54 of the tape pulling mechanism. Even if the guide roller 48 does not return to the initial position, the guide roller 48 is forcibly moved to the initial position. Therefore, the length of the tape T wound around the neck B3 ′ of the bag B is set as described above after using a rotary braking mechanism such as the band 44 that is not complicated in construction and does not cause a significant increase in cost. The tape winding device 13 that can be secured stably is realized.

  As described above, according to the present invention, when a tape is wound around the top of a bag filled with an article to bind it into a purse-like product, the supply of the tape can be stabilized and the commercial value can be improved. A tape winding device is provided. That is, the present invention is widely suitable for the technical field of article packaging.

It is a front view of the goods produced by the goods production system provided with the tape winding device concerning an embodiment of the invention. It is a top view which shows schematic structure of a goods production system. It is a top view of a tape winding apparatus. It is a principal part side view of a tape extraction mechanism. It is the top view which fractured | ruptured a part which shows the structure of a tape winding part. It is a top view corresponding to FIG. 5 for demonstrating the effect | action of a tape winding part. It is also a plan view. It is also a plan view. It is also a plan view. It is a top view of the conventional tape winding apparatus. It is a principal part enlarged plan view for demonstrating a tape winding process. It is a principal part top view for demonstrating the problem in the conventional tape drawer mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 13 Tape winding apparatus 31 Roll support part 32 Tape winding part 43 Rotating shaft (support member)
44 Band (friction brake)
48 Guide roller (tape drawing mechanism, guide member)
54 Spring (tape withdrawal mechanism)
55 Air cylinder (forced return means, actuator)
56 Arm member (forced return means, push-back member)
B bag R roll T tape

Claims (3)

  A roll support portion for supporting a roll-shaped tape; a tape winding portion for winding the tape fed from the support portion around a neck portion of a bag whose upper portion is squeezed into a neck shape; and then cutting the tape; and the roll support A guide member that is disposed in a tape supply path between the tape winding portion and the tape winding portion and guides the tape when the bag is supplied moves from an initial position against the biasing force of the spring, and the guide member A tape winding device having a tape drawing mechanism for pulling out the tape from the roll by returning to the initial position by an urging force, and provided with a forced return means for forcibly returning the guide member to the initial position. A tape winding device characterized by the above.   The forcible return means includes a push-back member that pushes the guide member back to an initial position and an actuator that drives the push-back member, and the actuator is synchronized with the supply of the bag to the tape winding portion. The tape winding apparatus according to claim 1, wherein the tape winding apparatus is driven as described above. The band type friction brake which provides predetermined | prescribed rotation resistance with respect to the supporting member which supports a roll rotatably in the said roll support part is provided. Tape winding device.

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