JP2005170410A - Tape bundling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape bundling machine, which sends a bag with its neck squeezed sufficiently and stably to a winding means to manufacture a commodity with its neck squeezed sufficiently. <P>SOLUTION: The tape bundling machine comprises transfer units 51 and 52, which grasp the upper part B3 of the bag B into a squeezed neck shape at a squeezing position, a transfer driving mechanism, which transfers the units 51 and 52 from the squeezing position to a tape winding position, and a tape winding unit, which is arranged at a tape winding position and winds a tape around the neck of the bag B. Each of the transfer units 51 and 52 comprises an upstream side transfer mechanism 52U, which receives the bag B at the squeezing position and transfers it to a transit position, and a downstream side transfer mechanism 51L, which receives the bag B from the upstream side transfer mechanism 52U at the transit position and transfers the bag B to the tape winding position. The upstream side transfer mechanism 52U consists of a pair of arm members 76U and 76L that grasp the neck of the bag B, and the downstream side transfer mechanism 51L consists of each pair of upper arm members 87U and 87L and of lower arm members 87U and 87L, which grasp the upper and lower parts of the neck of the bag B, respectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a tape binding machine for binding 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 neck is formed by squeezing a tape around an upper portion of a bag filled with an article such as food to form a neck portion and bound into a purse-like shape. As a tape binding machine used to produce such a product, for example, there is one disclosed in Patent Document 1. That is, this Patent Document 1 has a turntable type transfer means that is arranged on the downstream side of the bag making and packaging machine and transfers a bag filled with articles from a packaging position to a squeezing position, and a pair of arm members. And a squeezing means for squeezing the upper part of the bag with the arm member and gripping the upper part of the bag; A tape binding machine provided with Further, the winding means is provided with a linear slit on which a tape is stretched in the middle of the bag transfer path.

  Thus, when a bag filled with an article is produced by the bag making and packaging machine, first, the bag is transferred from the packaging position to the squeezed position by the transfer means, and a pair of arm members provided with the squeezing means at the upper part of the bag Squeezed by. Then, by passing the portion directly below the gripping portion of the bag held by the arm member through the slit provided in the winding means, the tape is wound immediately below the gripping portion of the bag to obtain a purse-like product. It is supposed to be.

  Also, in Patent Document 2, an adsorption-type first gripping mechanism that is disposed on the downstream side of the bag making and packaging machine and grips a bag filled with articles, and is delivered from the first gripping mechanism at an intermediate position. A second gripping mechanism that squeezes the top of the bag into a neck shape and grips the top of the bag in a squeezed state, the first gripping mechanism from the packaging position to the intermediate position, and the second gripping mechanism from the intermediate position to tape winding. A tape bundling machine is disclosed that includes a transfer means for transferring the tape to the attachment position and a winding means that is arranged at the tape winding position and winds the tape around the tape winding portion of the bag. And the said 2nd holding | grip mechanism is comprised by each pair of upper arm member and lower arm member which hold | grip the tape winding location in the said bag, respectively. The winding means has substantially the same configuration as that disclosed in Patent Document 1.

  Thus, when a bag filled with an article is produced by the bag making and packaging machine, the bag is first transferred from the packaging position to the intermediate position by the transfer means while being held by the first holding mechanism, and the bag is moved to the second holding mechanism. The upper arm member and the lower arm member provided in the second gripping mechanism are handed over to the top and bottom of the tape winding portion of the bag in a neck shape and gripped with the top of the bag being squeezed. Then, by passing the tape winding portion of the bag through the introduction portion of the winding means, the tape is wound around the tape winding portion to obtain a purse-like product. As described above, the structure in which the bag is delivered by the first gripping mechanism and the second gripping mechanism can increase the production speed.

Japanese Utility Model Publication No. 58-139403 JP 2001-322610 A

  By the way, in the tape binding machine described in Patent Document 1, the tape is wound around the bag grip portion by the arm member by the winding means. However, the lower portion is not sufficiently squeezed, that is, directly by the squeezing means. As a result, there is a possibility that a product with a relatively thick neck or a product with an unstable neck shape may be produced. On the other hand, in the tape binding machine described in Patent Document 2, the bag delivered from the first gripping mechanism to the second gripping mechanism is configured to grip the upper and lower portions of the tape winding portion by the upper arm member and the lower arm member. Therefore, the direct forcing force by the second gripping mechanism does not act on the tape winding portion of the bag, and the winding portion cannot be sufficiently narrowed. Furthermore, since air remains in the tape winding portion, this also causes a problem that the tape winding portion of the bag cannot be sufficiently squeezed. As a result, the neck of the product may not be sufficiently squeezed or the shape of the neck may become unstable.

  As described above, as a result of not sufficiently narrowing the neck of the product, the design of the product is lowered, and there is a problem that the product value at the time of display is lowered. Furthermore, for example, when the bag is introduced into the winding means, the neck part is in contact with the introduction part of the winding means and is damaged, or the introduction is not performed smoothly, or when the tape ends are glued together. Further, there is a problem in that the adhesive area between the tapes fluctuates, and that a thicker neck is introduced into the winding means, resulting in poor adhesion.

  Therefore, the present invention provides a tape binding machine capable of producing a product with a sufficiently narrowed neck by introducing a bag into the winding means while the neck is sufficiently and stably squeezed. Is an issue.

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

  First, the invention according to claim 1 of the present application is characterized in that the upper part of the bag filled with articles at the receiving position is squeezed into a neck shape and gripped in the state where the upper part of the bag is squeezed, A tape bundling machine comprising: transfer means for transferring the tape from a tape winding position to a tape winding position; and winding means for winding the tape around a neck of a bag disposed at the tape winding position and formed by the drawing means. The means includes a first gripping mechanism that is disposed on the upstream side in the transport direction and transports the bag received at the receiving position to the intermediate position, and a bag that is disposed on the downstream side and received from the first gripping mechanism at the intermediate position. A second gripping mechanism that moves to a tape winding position, and the first gripping mechanism includes a pair of arm members that grip a tape winding portion by a winding means in the upper part of the bag. 2 gripper It is characterized by being composed by the pair of upper arm members and lower arm members for gripping respective upper and lower locations tape wrap in the bag.

  According to a second aspect of the present invention, in the tape binding machine according to the first aspect, the squeezing means includes a unit formed by connecting the first gripping mechanism on the upstream side and the second gripping mechanism on the downstream side. The transfer means is configured to be oppositely arranged on both sides in the transfer direction, and the transfer means is configured such that when one unit is transferred such that the first gripping mechanism is positioned at the receiving position and the second gripping mechanism is positioned at the intermediate position, the other unit The first gripping mechanism is transferred to the intermediate position, and the second gripping mechanism is transferred to the tape winding position.

  First, according to the first aspect of the present invention, the tape winding portion is squeezed with a pair of arms provided in the first gripping mechanism at the receiving position, and gripped in that state, whereby the air at the winding portion is Removed and fully squeezed. When the bag is delivered from the first gripping mechanism to the second gripping mechanism, the second gripping mechanism grips the top and bottom of the squeezed tape winding portion, and subsequently the tape is wound around the winding portion. As a result, a bag with a sufficiently narrowed neck can be stably produced, so that the design of the product can be improved.

  Further, by sufficiently squeezing the tape winding portion, it is possible to prevent the bag from coming into contact with the introduction portion of the winding means when the bag is introduced into the winding means, and to break the bag, and to the bag winding means. Can be introduced smoothly. In addition, the tape winding location can be sufficiently narrowed, and the diameter of the neck of the product can be produced stably and substantially constant, so that the adhesive area of the tape can be stably secured, Adhesion failure can be suppressed.

  According to the second aspect of the present invention, in one unit in which the first gripping mechanism is positioned at the receiving position and the second gripping mechanism is positioned at the intermediate position, the first gripping mechanism grips the bag and The two gripping mechanisms will receive the bag from the first gripping mechanism of the opposing unit. On the other hand, in the other unit in which the first gripping mechanism is located at the intermediate position and the second gripping mechanism is located at the tape winding position, the first gripping mechanism delivers the bag to the second gripping mechanism of the opposing unit and The two gripping mechanism causes the tape to be wound around the neck of the bag. With this configuration, the first gripping mechanisms of both units alternately receive the bag at the receiving position, so that the neck of the bag can be sufficiently squeezed and the production speed can be increased.

  Hereinafter, a product production system using a tape binding machine according to an embodiment of the present invention will be described. In the following description, unless otherwise specified, “front and back” means “front side” and “back side” in front view, and “left and right” also indicates “left side” in front view. ”And“ right side ”.

  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 FIGS. 2 and 3, the product production system 1 includes a vertical bag making and packaging machine 2 and a tape binding machine 3 installed downstream of the bag making and packaging machine 2. When the bags B filled with the articles are continuously produced by the bag packaging machine 2, the tape binding machine 3 finishes the product X in the process of receiving the bags B and transporting them in the substantially horizontal direction as indicated by the arrow a. It is like that.

  The bag making and packaging machine 2 includes a former 11 provided with a sailor member 11a and a tube member 11b for overlapping the left and right edges of a belt-like packaging material fed from a roll support portion (not shown) into a cylindrical shape, A pair of left and right pull-down belt mechanisms 12, 12 that convey the tubular packaging material downward while pressing it against the tube member 11b and the front surface of the tube member 11b are arranged in the longitudinal direction. A vertical sealing device 13 that seals the upper and lower cylinders by sandwiching the cylindrical packaging material from both the front and rear sides, sealing a predetermined position of the packaging material in the width direction, and cutting the vicinity of the seal portion in the width direction A horizontal sealing device 14 that forms a bag B in which an article is enclosed at the same time as a bottom is formed in a wrapping material and accepts an article that is dropped and supplied, and a discharge for discharging an abnormal packaging product And a chute 15.

  As shown in FIG. 4, the horizontal sealing device 14 has seal jaws 21 a and 21 b that extend in the pair of front and rear and in the left and right direction and sandwich and weld the cylindrical packaging material. Each of the seal jaws 21a and 21b incorporates a heater (not shown), and the rear seal jaw 21b incorporates a cutter (not shown). The horizontal sealing device 14 has a gantry 22, and the gantry 22 is equipped with seal jaws 21a and 21b and a seal jaw moving mechanism 23 for contacting and separating the seal jaws 21a and 21b.

  The gantry 22 includes a pair of left and right side frames 24, 24 extending in the front-rear direction, and connecting members 25a, 25b that connect the side frames 24, 24 at the center side and the rear side. The gantry 22 is supported by the frame 2a of the bag making and packaging machine 2 through four support shafts 26 ... 26 that protrude from the side frames 24, 24 to the left and right outwards.

  The seal jaw moving mechanism 23 supports a pair of left and right support rods 27, 27 extending in the front-rear direction along the side frames 24, 24 and the support rods 27, 27 to support the seal jaws 21a, 21b. And base members 28a and 28b before and after the connection, and a connection base member 29 for connecting the support rods 27 and 27 at the rear end. Further, the support rods 27, 27 are slidably supported on the gantry 22 via guides 30 ... 30 disposed on the front, rear, left and right sides. The rear base member 28 b is slidable with respect to the support rods 27, 27 via sliders 31, 31 fitted to the support rods 27, 27.

  Further, the upper end portion of the spline shaft 32 protrudes from the upper surface of the connecting member 25a on the center side, and the crank 33 is spline fitted to the protruding end portion of the spline shaft 32. Further, a link 34a for moving the front seal jaw 21a is provided between one rotating end of the crank 33 and the connection base member 29, and the other rotating end of the crank 33 and the rear base member are provided. The link 34b for moving the rear side seal jaw 21b is provided between 28b. The lower end portion of the spline shaft 32 is connected to an output shaft (not shown) of the servo motor 35.

  As a result, when the output shaft of the servo motor 35 rotates, the crank 33 rotates around the spline shaft 32 in the directions of arrows b and c. For example, when the crank 33 rotates around the spline shaft 32 in the direction of the arrow b, the link 34a pushes the connection base member 29 backward, so that the front base member is supported via the support rods 27, 27 that are guided and slid by the guides 30 ... 30. 28a, that is, the front seal jaw 21a moves rearward. On the other hand, the link 34b pushes the rear base member 28b, that is, the rear seal jaw 21b, which is slidable with respect to the support rods 27, 27 via the sliders 31, 31, forward. As a result, the seal jaws 21a and 21b are brought into contact with each other as shown in the figure from the separated state.

  When the crank 33 rotates around the spline shaft 32 in the direction of the arrow c, the link 34a pulls the connection base member 29 forward, so that the front base member 28a, that is, the front seal jaw 21a moves forward via the support rods 27 and 27. Moving. On the other hand, the link 34b pulls the rear base member 28b, that is, the rear seal jaw 21b backward. As a result, the seal jaws 21a and 21b are separated from the contact state as shown in the figure.

  As shown in FIG. 5, a clamping mechanism 41 that clamps the cylindrical packaging material F from both the front and rear sides is provided immediately below the sealing jaws 21a and 21b prior to the contact of the sealing jaws 21a and 21b. . The clamping mechanism 41 is attached to bolts 42 and 42 that pass through the front and rear base members 28a and 28b that support the seal jaws 21a and 21b, respectively, and to the tips of the shaft portions 42a and 42a of the bolts 42 and 42. The brackets 43 and 43 that are L-shaped when viewed from the side, the flat sandwiching members 44 and 44 fixed to the brackets 43 and 43, and the base members 28 a and 28 b are positioned between the brackets 43 and 43. The brackets 43, 43, that is, the holding members 44, 44 are protruded from the sealing jaws 21a, 21b toward the cylindrical packaging material F with respect to the base members 28a, 28b. Springs 45, 45 for urging the spring. The heads 42b, 42b of the bolts 42, 42 regulate the maximum amount of protrusion of the clamping members 44, 44 by the springs 45, 45.

  Thereby, before each sealing jaw 21a, 21b moves to the arrow d direction and pinches the cylindrical packaging material F and contacts, the clamping member which protrudes from sealing jaw 21a, 21b by the urging | biasing force of the springs 45, 45 44 and 44 come into contact with each other with the tubular packaging material F interposed therebetween. Therefore, the cylindrical packaging material F is stably positioned at the center between the seal jaws 21a and 21b, and the horizontal sealing process by the seal jaws 21a and 21b is smoothly performed.

  On the other hand, after lateral sealing, even if each sealing jaw 21a, 21b starts to move away in the direction of arrow e and is separated, the cylindrical packaging material F, that is, in this case, is produced by the biasing force of the springs 45, 45 for a while. The upper part B3 of the bag B is clamped by the clamping members 44, 44. When the sealing jaws 21a and 21b are sufficiently separated from each other, the clamping of the upper part B3 of the bag B by the clamping members 44 and 44 ends.

  Mounting plates 50 and 50 for mounting upstream transfer mechanisms of first and second transfer units in the tape binding machine 3 to be described later are fixed to the lower ends of the front and rear base members 28a and 28b, respectively. (See also FIGS. 2-4). In other words, the pair of front and rear mounting plates 50, 50 are moved close to and away from the base members 28a, 28b and the sealing jaws 21a, 21b.

  As shown in FIGS. 2 and 3, the tape binding machine 3, which is a characteristic part of the present invention, is assembled over the frame 3 a of the tape binding machine 3 and the mounting plates 50, 50. In order to transfer the bag B received from the receiving position, that is, in this case, from the squeezing position P1 to the tape winding position P3 via the transfer position P2, the first is provided on each of the left and right sides in the transfer direction a. And a second transfer unit 51, 52, a tape winding device 53 that is disposed at the tape winding position P3 and winds the single-sided adhesive tape T around the neck B3 'of the bag B, and in the vicinity of the downstream end in the transfer direction a. A transfer drive mechanism 54 that is disposed and reciprocates the transfer units 51 and 52 in the transfer direction a; and a discharge chute 55 that is disposed at the tape winding position P3 and discharges the purse-like product X. Have

  The first transfer unit 51 includes upstream and downstream transfer mechanisms 51U and 51L, while the second transfer unit 52 similarly includes upstream and downstream transfer mechanisms 52U and 52L. In this case, the upstream transfer mechanisms 51U and 52U receive the bag B from the bag making and packaging machine 2 at the squeezing position P1, while the downstream transfer mechanisms 51L and 52L transfer the bag B to the tape winding device 53 at the tape winding position P3. Supply.

  The transfer drive mechanism 54 is rotatably supported by a pair of support plates 61, 61 extending at the downstream end of the frame 3 a and extends in a direction perpendicular to the transfer direction a, and at both ends of the shaft 62. A pair of fixed mounting members 63, 63, a pair of swing levers 65, 65 disposed on the frame 3a and supported so as to be swingable around the shaft 64 as indicated by solid lines and chain lines; The connecting rods 66, 66 for connecting the substantially intermediate portion of the swing levers 65, 65 in the longitudinal direction and the protrusions of the mounting members 63, 63, the swing end portions of the swing levers 65, 65, and the first described above. Connection rods 67 and 67 long in the transfer direction a for connecting the first and second transfer units 51 and 52 are provided. In this case, the mounting members 63 and 63 are fixed to the shaft 62 so that the protruding portions of the mounting members 63 and 63 are located on opposite sides of the shaft 62, respectively.

  A motor 68 is installed below the shaft 62, and the rotation of the motor 68 is transmitted to the shaft 62 via the timing belt 69.

  Thus, when the motor 68 is operated, the rotation of the motor 68 is transmitted via the timing belt 69, the shaft 62, the mounting members 63, 63, the connecting rods 66, 66, the swing levers 65, 65, and the connecting rods 67, 67. Thus, the first and second transfer units 51 and 52 are transmitted as reciprocation along the transfer direction a, and the transfer units 51 and 52 can reciprocate along the transfer direction a.

  Further, due to the fixing structure of the mounting members 63, 63 to the shaft 62, one swing lever 65 is positioned as indicated by a solid line, the connecting rod 67 is retracted downstream, and one transfer unit 51 is moved downstream. When moved, the other swinging lever 65 is positioned as indicated by a chain line, the connecting rod 67 advances to the upstream side, and the other transfer unit 52 moves to the upstream side.

  In this case, for example, as shown in the figure, when the upstream transfer mechanism 52U of the second transfer unit 52 is located at the throttle position P1 and the downstream transfer mechanism 52L is located at the transfer position P2, the first transfer unit 51 The transfer driving mechanism 54 can be operated so that the upstream transfer mechanism 51U is positioned at the transfer position P2 and the downstream transfer mechanism 51L is positioned at the tape winding position P3.

  Next, the first and second transfer units 51 and 52 will be described.

  As shown in FIGS. 6 and 7, the upstream side transfer mechanisms 51U and 52U of the first and second transfer units 51 and 52 are mounted on substantially rectangular support plates 71 and 71 and the lateral seal device 14. Are supported by the base members 28a and 28b and suspended below the mounting plates 50 and 50 that are long in the transfer direction a. That is, a rail 72 long in the transfer direction a is fixed to the lower surface of each mounting plate 50, while two sliders 73, 73 are fixed to the upper surface of the support plate 71 so as to be slidable on the rail 72. Yes.

  A pair of upstream and downstream shafts 74U and 74L are erected on the support plate 71 before and after the transfer direction a so as to penetrate the support plate 71 and be rotatable. Rotating members 75U and 75L that rotate integrally with the shafts 74U and 74L are provided at the ends of the shafts 74U and 74L above the support plate 71. The rotating members 75U and 75L have substantially V at the tip. Arm members 76U and 76L having character-like claw portions are extended. In that case, the arm members 76U, 76L pivot around the shafts 74U, 74L in a horizontal plane so that the pair of claws face each other at the tips and can cross vertically when facing each other and at a predetermined position on the upper part B3 of the bag B It is comprised so that it can squeeze and hold | grip to neck shape.

  Further, below the support plate 71 of the pair of shafts 74U and 74L, lever members 77U and 77L are fixed so as to be rotatable integrally with the shafts 74U and 74L.

  In the vicinity of the lower ends of the shafts 74U and 74L, posture holding members 79U and 79L are fixed via lever members 78U and 78L that can rotate integrally with the shafts 74U and 74L. In this case, the pair of posture holding members 79U and 79L can hold a predetermined portion of the lower portion B2 of the bag B from both the front and rear sides in the transfer direction a when the pair of posture holding members 79U and 79L are swung in the horizontal plane around the shafts 74U and 74L. It is configured as follows.

  On the other hand, the downstream transfer mechanism 51L of the first transfer unit 51 is mounted on a substantially rectangular support plate 81 and supported by the frame 3a. That is, a rail 82 that is long in the transfer direction a is fixed on the upper surface of the frame 3 a, and two sliders 83, 83 are fixed on the lower surface of the support plate 81 so as to be slidable on the rail 82.

  A pair of upstream and downstream shafts 84U and 84L are erected on the support plate 81 in front and rear in the transfer direction a so as to penetrate the support plate 81 and be rotatable. Rotating members 86U and 86L formed integrally with gears 85U and 85L that are rotatably provided to the shafts 84U and 84L are provided at the ends of the shafts 84U and 84L above the support plate 81. The pivot members 86U and 86L are provided with four upper and lower arm members 87U, 87U, 87L, and 87L each having a substantially U-shaped claw at the tip.

  In this case, the upstream side arm members 87U and 87U and the downstream side arm members 87L and 87L are arranged at predetermined intervals in the vertical direction, and the arm members 87U, 87U, 87L and 87L are connected to the shafts 84U and 84L. The claw portions turn around in a horizontal plane and the claw portions face each other, and when facing each other, the claw portions of the upstream arm members 87U and 87U are fitted between the claw portions of the downstream arm members 87L and 87L. It is configured to be able to cross and to hold a predetermined portion of the upper part B3 of the bag B with an interval in the vertical direction.

  Further, the vertical distance between the pair of upstream arm members 87U and 87U is larger than the thickness of the main body of the tape winding device 53 described later, and these arm members 87U, 87U, 87L and 87L grip the bag B. When the neck B3 ′ of the bag B is introduced into the tape winding device 53 in this state, the main body can pass between the arm members 87U and 87U.

  For example, as shown in the figure, the arm members 87U, 87U, 87L, 87L of the downstream transfer mechanism 51L of the first transfer unit 51 and the arm members 76U, 76L of the upstream transfer mechanism 52U of the second transfer unit 52 are used. When the upper part B3 of the bag B is gripped, the arm members 76U, 76L of the upstream transfer mechanism 52U of the second transfer unit 52 are located between the claws of the arm members 87U, 87U of the downstream transfer mechanism 51L of the first transfer unit 51. It is comprised so that a nail | claw part may be located without interfering with each other.

  Further, the gears 85U and 85L have the same number of teeth and mesh with each other, and, for example, rotate in opposite directions as indicated by arrows f and g.

  Lever members 88U and 88L are fixed below the gears 85U and 85L and above the support plate 81 so as to be rotatable integrally with the shafts 84U and 84L.

  Further, below the lever members 88U and 88L and above the support plate 81, posture holding members 90U and 90L are fixed via other lever members 89U and 89L that can rotate integrally with the shafts 84U and 84L. . In that case, when the pair of posture holding members 90U and 90L are pivoted in the horizontal plane around the shafts 84U and 84L and closed, a predetermined portion of the lower portion B2 of the bag B, that is, in this case, the upstream transfer mechanisms 51U and 52U. A position slightly above the holding position of the posture holding members 79U and 79L can be held from both the front and rear sides in the transfer direction a.

  And, for example, as shown in the figure, the bag B is formed by the posture holding members 90U, 90L of the downstream transfer mechanism 51L of the first transfer unit 51 and the posture holding members 79U, 79L of the upstream transfer mechanism 52U of the second transfer unit 52. When the lower portion B2 is held, the posture holding members 90U, 90L on the first transfer unit 51 side and the posture holding members 79U, 79L on the second transfer unit 52 side are positioned without interfering with each other. .

  Further, a lever member 91 extends from the downstream rotating member 86L, and the arrows of the air cylinder 92 erected on the support plate 81 via a support member (not shown) at the tip of the lever member 91. A rod 92a that moves forward and backward is connected.

  Further, the upstream side transfer mechanism 51U and the downstream side transfer mechanism 51L are connected by a connecting rod 93 provided between the support plates 71 and 81.

  Further, a long connecting rod 94 is provided between the lever member 77U fixed to the upstream shaft 74U of the upstream transfer mechanism 51U and the lever member 88U fixed to the upstream shaft 84U of the downstream transfer mechanism 51L. It is erected. On the other hand, a long connecting rod 95 is provided between the lever member 77L fixed to the downstream shaft 74L of the upstream transfer mechanism 51U and the lever member 88L fixed to the downstream shaft 84L of the downstream transfer mechanism 51L. Is built.

  And the front-end | tip of the connecting rod 67 extended in the upstream from the transfer drive mechanism 54 is connected under the support plate 81 of 51 L of downstream transfer mechanisms.

  As shown in FIGS. 7 and 8, gears 96U and 96L having the same number of teeth are fixedly fitted in the vicinity of the lower ends of the shafts 84U and 84L of the downstream transfer mechanism 51L. A bevel gear 97 is fixed immediately below the downstream gear 96L.

  On the other hand, a swing lever 102 that swings around the shaft 101 is provided at a position near the downstream end of the tape binding machine 3. A ball spline 104 is provided on a support member 103 extending downward from the support plate 81 of the downstream transfer mechanism 51L. A spline shaft 105 long in the transfer direction a, which is rotatably supported by the frame 3 a before and after the transfer direction a, is splined to the ball spline 104. Further, another bevel gear 106 that meshes with the bevel gear 97 is attached to the ball spline 104.

  A mounting member 107 is fixed to the downstream end of the spline shaft 105 along the transfer direction a, and one end of a connecting rod 108 extending generally downward is connected to the mounting member 107 and the connecting member 107 is connected to the connecting member 107. The other end of the rod 108 is connected to the swing end of the swing lever 102.

  Further, a groove cam 109 provided with an oval groove 109a in the vicinity of the swing lever 102 is rotatably provided around the shaft 110, and the groove 109a is positioned at a substantially intermediate position of the swing lever 102. The attached cam follower 111 is fitted. A motor 112 is installed near the downstream end of the tape binding machine 3, and the rotation of the motor 112 is transmitted to the shaft 110 via the timing belt 113.

  As a result, when the motor 112 rotates, the connecting rod 108 moves up and down via the timing belt 113, the shaft 110, the groove cam 109, the cam follower 111, and the swing lever 102, and as a result, rotates around the spline shaft 105. The spline shaft 105 rotates about the axis through the member 107, and the downstream shaft 84L can rotate through the bevel gears 106 and 97 engaged therewith. Further, the gear 96U that meshes with the gear 96L fixed to the downstream shaft 84L, and thus the upstream shaft 84U rotates.

  As shown in FIG. 8, when the downstream transfer mechanism 51L moves on the rail 82 as indicated by the chain line, the pole spline 104 is splined via the support member 103 extending to the downstream transfer mechanism 51L. It moves on the axis 105 as indicated by a chain line.

  In addition, although description was abbreviate | omitted about the downstream transfer mechanism 52L of the 2nd transfer unit 52, this downstream transfer mechanism 52L is set as the structure similar to the downstream transfer mechanism 51L of the 1st transfer unit 51 mentioned above.

  Next, the tape winding device 53 will be described. As shown in FIG. 9, the tape winding device 53 is installed at a tape winding position P3, and includes a tape roll support mechanism 121, a main body 122, a cushion mechanism 123, and the like. have.

  The tape roll support mechanism 121 is disposed on one side of the transfer direction a, and includes a gantry 124 and a shaft 125 that is erected on the gantry 124 and rotatably supports the roll-like single-sided adhesive tape T ′. , And two guide rollers 126 and 126 for guiding the fed tape T.

  The main body 122 has a well-known configuration, and is supported by a mounting member 131 that extends to the frame 3a via a cushion mechanism 123. A rectangular opening 132a is provided at a substantially central portion, and the upstream side. And a table 132 provided with a slit-like introduction portion 132b for guiding the bag B to the opening 132a through the neck B3 'of the bag B, and the tape roll support mechanism 121 built in the table 132. A guide member that guides the tape T fed out of the tape and a cutter that cuts the tape T at a predetermined position. In other words, the neck B3 ′ is held by the four arm members 87U, 87U, 87L, 87L mounted on the downstream transfer mechanism 51L, and the lower portion B2 is held by the pair of posture holding members 90U, 90L. When B3 'is introduced into the main body 122 through the introduction part 132b, the tape T waiting in a state where it is fed out by a predetermined length is wound around the neck B3' and then cut. . In addition, the above-described discharge chute 55 is positioned below the opening 132a.

  The cushion mechanism 123 relieves shock and resistance when the neck B3 ′ of the bag B transferred by the downstream transfer mechanisms 51L and 52L of the transfer units 51 and 52 enters the main body 122 via the introduction part 132b. In addition, the main body 122 is retracted by a predetermined distance to the downstream side in synchronization with the entry of the bag B, and is disposed on both sides of the air cylinder 141 attached to the attachment member 131 with the air cylinder 141 in plan view. A pair of guides 142, 142 and guide rods 143, 143 that can be inserted through the guides 142, 142 are provided. The rods 141 a of the air cylinder 141 and the leading ends of the guide rods 143 and 143 are connected to the downstream end of the main body 122.

  Next, the operation of the product production system 1 will be described.

  First, the case where the arm members 76U, 76L, 87U, 87U, 87L, 87L and the posture holding members 79U, 79L, 90U, 90L are closed will be described.

  That is, when the downstream shaft 84L of the downstream transfer mechanism 51L rotates in the direction of the arrow g shown in FIG. 6 through the spline shaft 105 and the bevel gears 106 and 97 by the operation of the motor 112, the lever fixed to the shaft 84L The shaft 74L to which the lever member 77L is fixed is rotated in the direction of the arrow k via the member 88L, the connecting rod 95, and the lever member 77L on the downstream side of the upstream transfer mechanism 51U. As a result, the arm member 76L on the downstream side It comes to close.

  In this case, since the gear 96L fixed to the downstream shaft 84L meshes with the gear 96U fixed to the upstream shaft 84L, the upstream shaft 84U simultaneously rotates in the direction of the arrow f. It becomes like this. Therefore, the shaft 74U to which the lever member 77U is fixed rotates in the direction of the arrow j via the lever member 88U fixed to the shaft 84U, the connecting rod 94, and the lever member 77U on the upstream side of the upstream transfer mechanism 51U. As a result, the upstream arm member 76U is closed.

  Thereby, the pair of arm members 76U and 76L are closed, and the upper part B3 of the bag B is squeezed into a neck shape, and the bag B is held by the arm members 76U and 76L via the formed neck part B3 '. become.

  When the upstream and downstream shafts 74U and 74L rotate in the directions of arrows j and k, respectively, posture holding members 79U and 79L are fixed to the shafts 74U and 74L, respectively. The members 79U and 79L are closed together with the arm members 76U and 76L to hold a predetermined portion of the lower portion B2 of the bag B from both the front and rear sides in the transfer direction a.

  On the other hand, since the shafts 84U and 84L rotate in the directions of arrows f and g, respectively, the posture holding members 90U and 90L fixed to the shafts 84U and 84L are closed, and a predetermined portion of the lower part B2 of the bag B is moved in the transfer direction. It comes to hold from both the front and rear sides of a.

  When the air cylinder 92 is activated in response to the operation of the motor 112 and the rod 92a is retracted in the direction of the arrow i, the gear is integrated with the rotating member 86L on the downstream side of the downstream transfer mechanism 51L via the lever member 91. Since 85L rotates in the arrow g direction, the upstream gear 85U meshing with the gear 85L rotates in the arrow f direction.

  As a result, the arm members 87U, 87U, 87L, 87L provided on the rotating members 86U, 86L are closed, and two predetermined upper and lower portions of the upper part B3 of the bag B are gripped.

  Next, the case where the arm members 76U, 76L, 87U, 87U, 87L, 87L and the posture holding members 79U, 79L, 90U, 90L are opened will be described.

  When the downstream shaft 84L of the downstream transfer mechanism 51L is rotated in the direction of the arrow g ′ shown in FIG. 10 through the spline shaft 105 or the bevel gear 106 by the operation of the motor 112, the lever member 88L fixed to the shaft 84L The downstream shaft 74L to which the lever member 77L is fixed is rotated in the direction of the arrow k 'via the connecting rod 95 and the downstream lever member 77L of the upstream transfer mechanism 51U, so that the arm member 76L is opened. become.

  In this case, since the gear 96L fixed to the downstream shaft 84L meshes with the gear 96U fixed to the upstream shaft 84U, the upstream shaft 84U also rotates in the direction of the arrow f ′ at the same time. To come. Therefore, the shaft 74U to which the lever member 77U is fixed is arranged in the direction of the arrow j ′ through the lever member 88U fixed to the shaft 84U, the connecting rod 94, and the lever member 77U on the upstream side of the upstream transfer mechanism 51U. As a result of the rotation, the arm member 76U is opened.

  As a result, the pair of arm members 76U and 76L are opened, and the bag B is released from gripping by the arm members 76U and 76L.

  Further, when the upstream and downstream shafts 74U and 74L rotate in the directions of arrows j and k, respectively, posture holding members 79U and 79L are fixed to the shafts 74U and 74L, respectively. The members 79U and 79L are opened integrally with the arm members 76U and 76L, and the bag B is released from being held by the posture holding members 79U and 79L.

  On the other hand, since the shafts 84U and 84L rotate in the directions of the arrows f 'and g', respectively, the posture holding members 90U and 90L fixed to the shafts 84U and 84L are opened, and the bag B is attached to the posture holding member 90U, It is released from holding by 90L.

  Further, when the air cylinder 92 is activated in response to the operation of the motor 112 and the rod 92a advances in the direction of the arrow h, the gear is integrated with the rotating member 86L on the downstream side of the downstream transfer mechanism 51L via the lever member 91. Since 85L rotates in the direction of arrow g ', the upstream gear 85U meshing with the gear 85L rotates in the direction of arrow f'.

  As a result, the arm members 87U, 87U, 87L, 87L provided on the rotating members 86U, 86L are opened, and the bag B is released from gripping by the arm members 87U, 87L.

  Now, paying attention to the first transfer unit 51, the transfer operation of the bag B from the throttle position P1 to the tape winding position P3 will be described.

  When a pair of sealing jaws 21a and 21b provided in the lateral sealing device 14 of the bag making and packaging machine 2 is brought into contact with each other to produce a bag B filled with an article, the above-described cutter is built in one sealing jaw 21b. The bag B is cut off from the upper part, and the upper part B3 of the bag B is pinched by the pinching mechanism 41 for a while. In the meantime, the pair of arm members 76U, 76L provided in one of the upstream side transfer mechanisms 51U, 52U of the tape binding machine 3 are closed, so that the upper part B3 of the bag B is squeezed into a neck shape.

  That is, as shown in FIG. 11, the bag B is received and squeezed by the upstream transfer mechanism 51U of the first transfer unit 51 at the squeezing position P1, and the upstream side of the second transfer unit 52 at the transfer position P2. When the transfer of another bag B from the transfer mechanism 52U to the downstream transfer mechanism 51L of the first transfer unit 51 is completed, the motor 68 of the transfer drive mechanism 54 operates, as shown by the arrow a in FIG. The upstream transfer mechanism 51U of the first transfer unit 51 moves from the throttle position P1 toward the transfer position P2 while holding the bag B, and the downstream transfer mechanism 51L holds the bag B while transferring the transfer position P2. To the tape winding position P3.

  As indicated by an arrow a ′, the upstream transfer mechanism 52U of the second transfer unit 52 moves from the transfer position P2 toward the throttle position P1 without gripping the bag B, and the downstream transfer mechanism 52L Without gripping B, the tape moves from the tape winding position P3 to the transfer position P2.

  In that case, the support plates 81 and 81 of the downstream side transfer mechanisms 51L and 52L of the transfer units 51 and 52 move linearly in the directions of arrows a and a 'along the rails 82 and 82, respectively. On the other hand, the support plates 71 and 71 of the upstream transfer mechanisms 51U and 52U move linearly in the directions of arrows a and a 'along the rails 72 and 72 fixed to the mounting plates 50 and 50, respectively, and are attached to the mounting plates 50 and 50, respectively. Since the plates 50 and 50 move integrally with the sealing jaws 21a and 21b that shift from the contact state to the separation state, the support plates 71 and 71 move in an arc shape in the horizontal plane as a result. According to the illustrated example, the support plates 71 and 71 of the upstream transfer mechanisms 51U and 52U are slightly retracted to the side in the transfer direction a as compared with the position shown in FIG.

  As shown in FIG. 13, when the upstream transfer mechanism 51U of the first transfer unit 51 and the downstream transfer mechanism 52L of the second transfer unit 52 face each other at the transfer position P2, the operation of the transfer drive mechanism 54 is Stopped. Then, the bag B is transferred between the transfer mechanisms 51U and 52L. That is, after the arm members 87U, 87U, 87L, 87L of the downstream side transfer mechanism 52L of the second transfer unit 52 are closed and grip the upper and lower portions of the grip portions of the arm members 76U, 76L of the bag B, the first transfer unit 51 The arm members 76U and 76L of the upstream transfer mechanism 51U are opened to release the bag B. Further, in the lower part B2 of the bag B, the posture holding members 90U, 90L of the downstream transfer mechanism 52L of the second transfer unit 52 are replaced by the posture holding members 79U, 79L of the upstream transfer mechanism 51U of the first transfer unit 51. Holds the lower part B2 of the bag B.

  Further, the bag B transported by the downstream transport mechanism 51L of the first transport unit 51 is wrapped around the neck B3 ′ formed by the arm members 76U and 76L at the tape winding position P3, and the purse-like product X is wound around the neck B3 ′. On the other hand, the upstream side transfer mechanism 52U of the second transfer unit 52 is ready to receive the next bag B at the throttle position P1.

  Then, as shown in FIG. 14, by the operation of the transfer driving mechanism 54, the first transfer unit 51 that has finished the transfer process and the tape winding process of the bags B and B moves in the direction of the arrow a ′ and the bag B , B move in the direction of arrow a. That is, the upstream transfer mechanism 51U of the first transfer unit 51 is positioned at the receiving position P1 and waits for receipt of the bag B from the bag making and packaging machine 2, and the downstream transfer mechanism 51L is positioned at the transfer position P2. It waits for the transfer of the bag B from the upstream transfer mechanism 52U of the second transfer unit 52.

  On the other hand, the upstream transfer mechanism 52U of the second transfer unit 52 transfers the gripped bag B located at the transfer position P2 to the downstream transfer mechanism 51L of the first transfer unit 51 and the downstream transfer mechanism 52L is tape-wrapped. By supplying the grasped bag B to the tape winding device 53 arranged at the attachment position P3, the product is made into a purse-like product X in which the tape T is wound around the neck B3 ′ and discharged to the lower discharge chute 55. To come. When the bag B enters the tape winding device 53, the cushion mechanism 123 operates in synchronization with the entry operation of the bag B, and the main body 122 of the tape winding device 53 moves backward, that is, indicated by a chain line in FIG. Since the impact and resistance acting on the bag B are reduced by moving to the position, for example, the problem of forming a hole in the bag B is effectively avoided. At this time, the main body 122 moves backward at the same speed as or slower than the transfer speed of the bag B by the downstream transfer mechanisms 51U and 52U. Further, since the air cylinder 141 is used to control the backward movement of the main body 122, there is an advantage that the impact is further mitigated by the presence of air.

  As described above, the upper B3 of the bag B is squeezed into a neck shape by the arm members 76U and 76L provided in the upstream side transfer mechanisms 51U and 52U at the squeezing position P1, and the air in the neck B3 ′ is gripped in this state. Is removed, and the neck B3 'can be sufficiently squeezed. When the bag B is delivered from the upstream transfer mechanisms 51U and 52U to the downstream transfer mechanisms 51L and 52L, the arm members 87U, 87U, 87L and 87L provided in the downstream transfer mechanisms 51L and 52L are arm members. Since the upper and lower sides of the neck B3 'squeezed by 76U and 76L are gripped and the tape T is wound around the neck B3', the product X with the neck B3 'sufficiently squeezed can be stably produced. The design of the product X can be improved.

  Further, by sufficiently narrowing the neck portion B3 ′, the bag B can be prevented from being excessively brought into contact with the introduction portion 132b of the device 53 and being damaged when the bag B is introduced into the tape winding device 53. Smooth introduction of the bag B into the device 53 can be achieved. Further, the neck B3 'can be sufficiently squeezed and the diameter of the neck B3' of the bag B can be stably produced with a substantially constant diameter, so that the adhesive area of the tape T can be secured stably. It is possible to suppress adhesion failure.

  In the first transfer unit 51 in which the upstream transfer mechanism 51U of the first transfer unit 51 is positioned at the throttle position P1, and the downstream transfer mechanism 51L is positioned at the transfer position P2, the upstream transfer mechanism 51U holds the bag B. At the same time, the downstream transfer mechanism 51L receives the bag B from the upstream transfer mechanism 52U of the opposing second transfer unit 52. On the other hand, in the other second transfer unit 52 in which the upstream transfer mechanism 52U is positioned at the transfer position P2 and the downstream transfer mechanism 52L is positioned at the tape winding position P3, the upstream transfer mechanism 52U is opposed to the first transfer. The bag B is delivered to the downstream transfer mechanism 51L of the unit 51, and the downstream transfer mechanism 52L winds the tape T around the neck B3 'formed on the upper part B3 of the bag B. With this configuration, the upstream transfer mechanisms 51U and 52U of the units 51 and 52 alternately receive the bag B at the throttle position P1, so that the neck B3 ′ of the bag B can be sufficiently squeezed and the production can be performed. Can be speeded up.

  According to the present invention, there is provided a tape binding machine capable of producing a product in which the neck portion is sufficiently squeezed by introducing the bag into the winding means with the neck portion sufficiently and stably squeezed. be able to. The present invention relates to a tape binding machine for binding an upper part of a bag filled with an article with a tape, and 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 binding machine concerning an embodiment of the invention. It is a front view which shows schematic structure of a goods production system. It is also a plan view. It is a top view of a horizontal sealing apparatus. It is a partial excerpt side view which shows the structure of seal jaw vicinity. It is a top view of a 1st transfer unit in general. It is a side view of an upstream side and a downstream side transfer mechanism. It is a front view which shows the opening / closing structure of the attitude | position holding member in a downstream transfer mechanism. It is a top view of a tape winding apparatus. It is a top view for demonstrating opening operation of the arm member and attitude | position holding member in a 1st transfer unit. It is a top view for demonstrating the transfer operation | movement of a bag. It is also a plan view. It is also a plan view. It is also a plan view.

Explanation of symbols

3 Tape Bundling Machine 51 First Transfer Unit (Unit)
52 Second transfer unit (unit)
51L, 52L Downstream transfer mechanism (second gripping mechanism)
51U, 52U Upstream transfer mechanism (first gripping mechanism)
54 Transfer drive mechanism (transfer means)
53 Tape winding device (winding means)
76L, 76U Arm member 87L, 87U Arm member (upper arm member, lower arm member)
B Bag B3 'Neck (Tape winding part)
P1 Aperture position (receiving position)
P2 Transfer position (intermediate position)
P3 Tape winding position T Tape

Claims (2)

  The squeezing means for squeezing the upper part of the bag filled with articles at the receiving position into a neck shape and gripping the squeezed upper part of the bag, the transfer means for transferring the squeezing means from the receiving position to the tape winding position, and A tape binding machine having a winding means for winding a tape around a neck of a bag formed by the squeezing means disposed at a tape winding position, wherein the squeezing means is arranged on the upstream side in the transfer direction, and A first gripping mechanism for transferring a bag received at a receiving position to an intermediate position; and a second gripping mechanism for transferring a bag received from the first gripping mechanism at the intermediate position to a tape winding position. The first gripping mechanism is composed of a pair of arm members for gripping the tape winding portion by the winding means in the upper portion of the bag, and the second gripping mechanism is a tape winding portion of the bag. Tape binding machine, characterized in that it is constituted by the pair of upper arm members and lower arm members for gripping the bottom, respectively. The throttle means has a configuration in which a unit formed by connecting a first gripping mechanism on the upstream side and a second gripping mechanism on the downstream side is arranged opposite to both sides in the transfer direction, and the transfer means holds the first unit in the first grip When the mechanism is transported to the receiving position and the second gripping mechanism is positioned to the intermediate position, the other unit is positioned to the intermediate position and the second gripping mechanism is positioned to the tape winding position. The tape binding machine according to claim 1, wherein the tape binding machine is transported as follows.

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