JP2005170449A - Tape bundling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape bundling machine, which can bundle the upper part above the neck of a bag filled with an article to give a fine appearance. <P>SOLUTION: The tape bundling machine has an upstream side transfer mechanism having a pair of arm members 76U and 76L, which squeeze the upper part B3 of the bag B into a neck-like shape. The bundling machine also has a pinching mechanism 41, which pinches the entire width of the upper part above a squeezed part from both front and rear sides, that is, both sides in the thickness direction, while keeping the pinched part in an almost tensed state when the upper part B3 is squeezed. The pinching mechanism 41 has a pair of pinching members 44 and 44, which move closer to and away from a cylindrical packaging material (bag B), together with a pair of front/rear seal jaws of a lateral seal unit, and are kept forced to project further toward the packaging material than the seal jaws. The pinching members 44 and 44 pinch the upper part B3 of the bag B, which is formed by a lateral sealing process, between the pinching members 44 and 44 for a while, during which the arm members 76U and 76L perform the squeezing process. <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.

  For example, there are the following tape binding machines that are used to produce a purse-like product that is bundled with a tape wound around the top of a bag filled with an article such as a food product. That is, Patent Document 1 discloses a turntable type transfer means that is arranged on the downstream side of a bag making and packaging machine and transfers a bag filled with an article from a packaging position to a squeezing position, and a pair of squeezing plates that can be separated from each other. There is disclosed a tape bundling machine comprising a squeezing means for squeezing the upper part of the bag into a neck shape, and a winding means that is arranged near the squeezing position and winds the tape around the neck formed by the squeezing means. Yes.

  Thus, when a bag filled with an article is produced by the bag making and packaging machine, the bag is transferred from the packaging position to the squeezed position by the transfer means, and the upper part is squeezed into a neck shape by the squeezing means. It is transferred to the tape winding position while being gripped by the tape, and the tape is wound around the neck by the winding means so that a purse-like product is obtained.

  Patent Document 2 also discloses an adsorption-type gripping unit that is disposed on the downstream side of the bag making and packaging machine and grips a bag filled with articles, and a transfer unit that transports the gripping unit from the packaging position to the throttle position. And a squeezing means having a pair of squeezing arms that can be separated from each other and squeezing the upper part of the bag into a neck shape, and a wrapping means for winding the tape around the neck formed by the squeezing means at the tape winding position The tape binding machine provided with these is disclosed.

  Thereby, when a bag filled with an article is produced by the bag making and packaging machine, the bag is transferred from the packaging position to the squeezed position by the transfer means while being held by the holding means at the upper part and the lower part. After the upper part is squeezed into a neck shape by the squeezing means, it is transferred to the tape winding position while being gripped by the squeezing means, and the tape is wound around the neck part by the wrapping means to obtain a purse-like product. It is like that.

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

  By the way, in the tape binding machine described in Patent Document 1, when the upper part of the bag filled with articles by the squeezing means is squeezed into a neck shape, the upper part is free from the part to be squeezed. It will shrink in the direction.

  Further, in the tape binding machine described in Patent Document 2, the bag filled with the article is squeezed between the gripping parts by the squeezing means in a state where the bag is gripped from one side of the bag by the upper suction part and the lower suction part. For this reason, it is impossible to avoid the bag from being displaced at the upper suction portion when the means is squeezed, and also in this case, the upper portion of the bag is shrunk in the width direction.

  Therefore, in either case, the upper part of the bag shrinks in the width direction when squeezed into a neck shape, so that this state is maintained even after the tape is wound, thereby reducing the commercial value at the time of display. is there.

  Then, in view of the above present situation, this invention makes it a subject to provide the tape binding machine which can bind | conclude the upper part finely from the neck part of the bag filled with articles | goods.

  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 a state where the upper part of the bag is squeezed, and the squeezing means is at the receiving position. The present invention relates to a tape binding machine having transfer means for transferring the tape from a tape winding position to a tape winding position in a substantially horizontal direction, and winding means for winding the tape around the neck of a bag formed by the squeezing means at the tape winding position. Therefore, when the upper part of the bag is squeezed by the squeezing means, there is provided clamping means for clamping the upper part of the bag in the width direction in a substantially tensioned state.

  The invention according to claim 2 of the present application is characterized in that, in the invention according to claim 1, the clamping means clamps the entire upper width of the bag from both sides in the thickness direction of the bag. .

  Furthermore, the invention according to claim 3 of the present application is the invention according to claim 1, wherein the clamping means clamps both ends in the width direction of the upper portion of the bag from both sides in the thickness direction of the bag. It is characterized by.

  The invention according to claim 4 of the present application is the invention according to any one of claims 1 to 3, wherein the tubular packaging material vertically sealed in the longitudinal direction is sandwiched between the upstream side and the width. A bag making and packaging machine having a pair of sealing jaws that laterally seal in a direction is disposed, and the clamping means is provided immediately below the sealing jaws.

  With the above configuration, according to the first aspect of the present invention, when the upper portion of the bag is squeezed by the squeezing means, the upper portion of the squeezed portion of the bag is clamped by the clamping means in a substantially tensioned state. Therefore, the upper portion does not shrink in the width direction. Therefore, since the upper part can be made more attractive than the portion where the tape of the bag filled with the article is wound, the commercial value is improved. In addition, since the upper part is sandwiched from the part to be squeezed during the squeezing process, high-speed production is not hindered.

  Further, according to any of the second and third aspects of the invention, when the upper part of the bag is squeezed by the squeezing means, the upper part of the bag is clamped in a substantially tensioned state from both sides in the thickness direction by the clamping means. Therefore, the upper portion does not shrink further in the width direction. Accordingly, the commercial value is further improved.

  By the way, in the bag obtained by the bag making and packaging machine, for example, the part where the vertical seal portion is located is thicker than other parts, so it may not be stably clamped over the entire upper width. In such a case, according to the invention described in claim 3, since both end portions having a stable thickness are clamped, the upper portion of the bag can be stably clamped. In particular, it is suitable for a bag in which side gussets are formed.

  According to the fourth aspect of the present invention, when the pressing means is provided immediately below the sealing jaw in the bag making and packaging machine for the purpose of smoothing the lateral sealing by the sealing jaw, the pressing means. Can be used as the clamping means, so that it is not necessary to add new means and an inexpensive binding machine is realized.

  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 a characteristic feature, as shown in FIG. 5, a cylindrical packaging material F is placed over the full width from both the front and rear sides immediately below the seal jaws 21a and 21b, prior to the contact of the seal jaws 21a and 21b. A clamping mechanism 41 that clamps in an almost tension state and clamps the upper part B3 of the bag B that has been produced for a while after the lateral sealing process is completed is provided.

  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.

  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 a chain line, the ball spline 104 is splined via the support member 103 extended 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.

  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. The posture holding 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.

  A pair of sealing jaws 21a and 21b provided in the lateral sealing device 14 of the bag making and packaging machine 2 comes into contact with each other to produce a bag B filled with an article. That is, before the seal jaws 21a and 21b move in the direction of the arrow d to sandwich the cylindrical packaging material F and come into contact with each other, the clamping members 44 projecting from the seal jaws 21a and 21b by the urging force of the springs 45 and 45. 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.

  Then, the bag B is separated from the upper portion by a cutter built in one seal jaw 21b, and the upper portion B3 of the bag B is held for a while by the clamping mechanism 41 over the entire width of the upper portion B3 from both sides in the front-rear direction, that is, in the thickness direction. It is pinched. 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. When the sealing jaws 21a and 21b are sufficiently separated after the squeezing process, the clamping of the upper part B3 of the bag B by the clamping members 44 and 44 is finished.

  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 is activated, and the upstream transfer mechanism of the first transfer unit 51 is activated. 51U moves from the throttle position P1 to the transfer position P2 while holding the bag B, and the downstream transfer mechanism 51L moves from the transfer position P2 to the tape winding position P3 while holding the bag B. .

  As shown in FIG. 12, 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 performed. 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 transfer mechanism 52L of the second transfer unit 52 are closed and grip the bag B, the arm members 76U, 76L of the upstream transfer mechanism 51U of the first transfer unit 51 are closed. Opens 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 transferred by the downstream transfer mechanism 51L of the first transfer unit 51 is made into a purse-like product X by winding the tape T around the neck B3 'at the tape winding position P3, while the second transfer unit The upstream transfer mechanism 52U of 52 is ready to receive the next bag B at the throttle position P1.

  Then, as shown in FIG. 13, by the operation of the transfer drive mechanism 54, the first transfer unit 51 that has completed 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.

  With the above configuration, as shown in FIG. 14, when the upper part B3 of the bag B filled with the articles is squeezed into a neck shape by the arm members 76U and 76L mounted on the upstream transfer mechanisms 51U and 52U, Since the upper part from the portion where the bag B is squeezed by the holding members 44, 44 is clamped in a substantially tension state from both sides in the thickness direction, the upper part B3 does not shrink in the width direction. Therefore, even after the subsequent tape winding process, the upper portion of the bag B filled with the article can be improved in appearance from the portion B3 ′ where the tape T is wound, so that the commercial value is improved. Moreover, since the upper part of the bag B is clamped in the drawing process, the high speed production is not hindered.

  By the way, in the bag B obtained by the bag making and packaging machine 2, for example, the portion where the vertical seal portion is located is thicker than the other portions, so that it may not be stably clamped over the entire width of the upper portion B3. is there. In such a case, instead of the sandwiching members 44 and 44 shown in FIG. 5, a sandwiching portion having notches 44a 'and 44a' on the contact end side near the center in the longitudinal direction as shown in FIG. It is effective to use a clamping mechanism 41 'having members 44' and 44 '. That is, as indicated by the chain line, when the sandwiching members 44 ′ and 44 ′ sandwich the upper part B 3 of the bag B from both sides in the thickness direction of the bag B, the sandwiching members 44 ′ and 44 ′ Since both the widthwise opposite end portions having a stable thickness are sandwiched while avoiding the vertical seal portion B4 of B3, the upper portion B3 of the bag B can be stably sandwiched. In particular, it is suitable for a bag in which side gussets are formed.

  When the clamping mechanisms 41 and 41 'are provided for the purpose of facilitating the lateral sealing by the sealing jaws 21a and 21b, the clamping mechanisms 41 and 41' are intended to improve the appearance of the upper part B3 of the bag B. Therefore, there is no need to add new means and the tape binding machine 3 can be inexpensively realized.

  As described above, according to the present invention, there is provided a tape binding machine capable of binding the top portion of the bag filled with articles with a good appearance. That is, the present invention relates to a tape binding machine that binds the 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 a somewhat schematic figure for demonstrating the effect | action of a clamping mechanism. It is a principal part extract top view of the clamping mechanism of another structure.

Explanation of symbols

2 Bag making and packaging machine 3 Tape bundling machine 21a, 21b Seal jaw 41, 41 'Holding mechanism 53 Tape winding device (winding means)
54 Transfer drive mechanism (transfer means)
76L, 76U Arm member (throttle means)
B Bag F Cylindrical packaging material P1 Drawing position (receiving position)
P3 Tape winding position T Tape

Claims (4)

  Squeezing means for squeezing the upper part of the bag filled with articles at the receiving position into a neck shape and holding the upper part of the bag in a squeezed state, and transferring the squeezing means from the receiving position to the tape winding position in a substantially horizontal direction A tape bundling machine having means and a winding means for winding a tape around a neck of a bag formed by the squeezing means and arranged at the tape winding position, when the upper part of the bag is squeezed by the squeezing means Further, the tape binding machine is provided with clamping means for clamping the upper part of the squeezed portion in the width direction in a substantially tensioned state.   2. The tape binding machine according to claim 1, wherein the clamping means clamps the entire upper width of the bag from both sides in the thickness direction of the bag.   2. The tape binding machine according to claim 1, wherein the clamping means clamps both ends in the width direction of the upper portion of the bag from both sides in the thickness direction of the bag. A bag making and packaging machine having a pair of sealing jaws that sandwich a cylindrical packaging material longitudinally sealed in the longitudinal direction and laterally seal in the width direction is disposed on the upstream side, and the clamping means is located immediately below the sealing jaws The tape binding machine according to any one of claims 1 to 3, wherein the tape binding machine is provided.

Images