JPH0585506A - Tying device - Google Patents

Abstract

PURPOSE:To give a good appearance, and make it easier to untie by making the knot of a string to be a bowknot with two loops when a string is placed crisscross on a packaging box and ties by a method wherein a large number of finger parts which are provided together with a rotary arm device and string feeding device are operated by pairing them orderly. CONSTITUTION:In order to place a string crisscross on a packaging box and tie it, the packaging box is previously held by a holder part 1 rotatably. First, a string is paled on a base finger part 3 by a grooved plate 2, and the base finger part 3 is made pass under the cross part of the string. Then, a ring finger part 4 and a tying finger part 5 are moved to the cross part, and a front loop is formed by engaging the string. Then, the base finger part 3 is placed over the cross part, and the leading end of the string is engaged by the tying finger 5 to tie the string while forming a rear loop. At this time, a rotary arm device 6 is vertically rotated around the holder part 1 to place the string around the packaging box. Also, the string is fed from a string feeding device 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a string tying device for hanging a string on a packaging container such as a confectionery or a station valve.

[0002]

2. Description of the Related Art For example, a confectionery or an ekiben is wrapped in a wrapping paper and then tied with a string on the cross. Conventionally, the knot tying of this string has been performed manually. However, nowadays, with the mass production of products, the work cannot be kept up by hand, and the labor cost is increasing. Therefore, in recent years, the work of tying and tying a string has been mechanized so that the work can be efficiently performed.

[0003]

However, the conventional string tying device has the following problems. (A) In the conventional machine, the knot of the string is a single bow with only one loop, and the position of the knot is limited to the corner portion of the packaging container, so that the appearance is bad. For example, packaging of high-grade products such as Japanese sweets. Could not be used for. (B) Since the knot is a one-sided knot, the string is naturally and tightly tied, so that the string cannot be easily unraveled. Therefore, when unwrapping the package, it is troublesome to shift the string by force and remove it from the packaging container, or to cut the string with scissors. In addition, there is a concern that the packaging box may be deformed when the string is displaced and removed.

[0004]

[Means for Solving the Problems] The technical means of the present invention taken to solve the above problems are as follows. A cord tying device for tying a string on a packaging box in a cross shape. This tying device holds the packaging box, and in a range of about 90 degrees in a horizontal direction with a substantially central portion of the packaging box as a rotation center. A rotatable holder part; a guide plate having a cutter and a holding claw part; a base finger part having a receiving finger and a pushing finger; a shaft finger having a hooking pin at its tip, and a hooking pin. A ring finger portion provided with a moving finger having an insertion ring slidably fitted therein; a connecting finger portion provided with a sandwiching finger and a hanging finger; rotating up and down around the holder portion to wrap a string And a string supply device for supplying a string, and the guide plate is configured to initially clamp the tip of the string by the clamping claw portion, and to the base finger portion side. Move to the receiving finger and the pushing The tip of the string is passed to the garment, and after binding the string, the part to be the tip of the string of the next binding is sandwiched, and the string is cut by the cutter, and the base finger part is Initially, it is located almost in the center of the upper surface of the packaging box, receives the tip of the string from the guide plate, and clamps the tip of the string between the receiving finger and the pushing finger. It is passed between the cross part of the string and the packaging box that is hung on, and it is further covered on the cross part of the string and the front loop forming part by the ring finger part. To cancel,
The shaft finger and the moving finger of the ring finger portion are for hooking a cord with the hooking pin to rotate to form a front loop, and the connecting finger portion includes the pinching finger and the hooking finger. Bind the string at the cross part while forming the rear loop by hooking the front side of the string clamped by the cross finger part of the string and the base finger part covered on the front loop forming part to move the string. It is a string knot tying device. It should be noted that it is optional to provide a box supply device for automatically supplying the packaging box to the string tying device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a schematic explanatory view showing the overall structure of one embodiment, FIG. 2 is a perspective view of a main part viewed from the right side surface, and FIG. 3 is a perspective view of the main part viewed from the left side surface. The cord tying device includes a base frame 90. At the bottom inside the base frame 90,
A cam device C having a large number of cams and a control device A for electrically controlling the cam device C are provided. Also, the base frame 90
On the upper part of the holder part 1, the conducting plate 2, the base finger part 3,
A ring finger portion 4, a connecting finger portion 5, a rotating arm device 6 and a string supply device 7 are arranged. The operation control of the guide plate 2, the base finger portion 3, the ring finger portion 4, the connecting finger portion 5 and the like is set to be appropriately performed by the cam device C and the wire (illustrated in the detailed drawing).

Description of Holder Part 1 Inside the base frame 90, a holder part 1 for holding a packaging box B (illustrated in FIG. 10 and subsequent figures) is provided. The holder portion 1 includes a base plate 10 having a substantially square flat plate shape. Base plate 10
On one side, an auxiliary base plate 10a having an adjusting mechanism corresponding to the size of the packaging box B is provided so that it can be folded from the horizontal state to the hanging state. The auxiliary base plate 10a is provided with two slide grooves 101. An adjusting body 102 is slidably attached to the slide groove 101. The adjusting body 102 can be fixed at any position by the stopper 103. Above the base plate 10, there is provided a vertically movable holding plate 11 that holds the packaging box B by holding it from above. A drive mechanism 12 for horizontally rotating the base plate 10 and the sandwiching plate 11 in a range of 90 degrees is provided below the holder portion 1. FIG. 4 is an explanatory view of the drive mechanism of the holder part. The drive mechanism 12 has a square plate-shaped base 120, and a drive motor 121 is attached to the back side of the substantially central portion thereof. An arm plate 123 that rotates around the shaft 122 is provided at one corner of the base 120. One end of a link 125 is attached to the tip of the arm plate 123 via a shaft pin 124. Link 125
The other end is attached to the base side of an arm plate 127 provided on the lower portion of a cylindrical rotating body 129 that rotates about an axis rod 128, via an axis pin 126. Arm plate 12
A switch base plate 132 is provided below the rotation area of 7. Both ends of the switch base plate 132 correspond to the front ends of the arm plates 127, and the rotation range of the arm plates 127 is set to the axial rod 1.
Limit switches S1 and S2 for setting a range of 90 degrees around 28 are attached. An arm base 130 is provided above the rotating body 129. Arm stand 130
A support frame 131 is erected at the tip of the. Support frame 131
The base plate 10 is horizontally attached to the upper part of the.

Description of Guide Plate 2 Referring to FIGS. 2, 3, 15, and 19. Base frame 9
An L-shaped angle frame 91 is provided on the upper part of 0. A guide plate 92 is attached to the upper surface of the upper angle 910 of the angle frame 91. The guide plate 92 is provided with a guide groove 93 that serves as a guide when the guide plate 2 described later moves. An attachment base piece 96 is attached to the guide groove 93 via two roller-shaped guide bodies 94. The guide plate 2 is attached to one end of the attachment table piece 96. The conducting plate 2 has a two-plate structure, and the substrate 20
And a slide plate 20a. The substrate 20 has a substantially rectangular overall shape and is fixed to the attachment table piece 96. The slide plate 20a is provided on the substrate 20 by a driving means described later.
It slides up and down along. Board 20
Is bent at a right angle to form receiving claw portions 211 and 221. Further, on one end side of the receiving claw portion 221, the cutter groove 2 that serves as an escape portion when the cutter 24 described below operates.
3 is formed. A cutter 24 is arranged above the cutter groove 23. The cutter 24 is the slide plate 2
It is attached to the bottom of 0a. A guide bar 2 for guiding the ribbon R is provided on the substrate 20 so as to be adjacent to the cutter 24.
5 is provided.

At the lower part of the slide plate 20a, corresponding to the receiving claws 211 and 221, the pushing claw 2 which is bent at a right angle.
12, 222 are formed. Thereby, the pressing claw portion 2
12 and the receiving claw portion 211 clamps the claw portion 21, and the pressing claw portion 222.
The holding claw portion 22 is formed by and the receiving claw portion 221. The portion between the sandwiching claws 21 and 22 is a "U" -shaped notch 200, 200a. Further, as shown in FIG. 2, an L plate-shaped trigger portion 201 is provided on the upper portion of the slide plate 20a so as to slightly project from the upper portion of the substrate 20. An end portion of the wire tube T1 is attached to the trigger portion 201. The wire W1 in the wire tube T1 has a trigger portion 201.
Extend through and the ends are attached to the top of the substrate 20. The wire W1 has a mechanism in which the pull amount is adjusted by the cam device C. According to this structure, when the wire W1 is pulled, its reaction causes the trigger portion 2 to move.
01 is pulled downward, and the slide plate 20a moves to the substrate 2
Slide down along 0. The upper portion of the guide plate 2 is supported by the "U" -shaped attachment base piece 96 as described above. The tip of the drive arm 97 is pivotally attached to the tip side of the attachment base piece 96 so as to be rotatable. The drive arm 97 is attached to a support column 98 provided upright on the base frame 90 so that the drive shaft 99 is rotatably inserted. The drive shaft 99 is rotated by drive means (not shown). According to this structure, the two guide bodies 94 move along the guide groove 93 of the guide plate 92 by the rotation of the drive arm 97, and the guide plate 2 moves while changing its direction accordingly.

Description of Base Finger Part 3 FIG. 5 is a perspective view showing the structure of the base finger part in a normal state, and FIG.
FIG. 6 is a perspective view showing an operating state of a base finger portion. As shown in FIGS. 2 and 3, the base finger portion 3 is provided in the vicinity of the conducting plate 2. The base finger portion 3 is attached to the tip of the drive arm 30. The base of the drive arm 30 is attached to the support member 300 via a shaft rod 301. The support member 300 has a structure in which a lateral cam device (not shown) can swing and rotate in a certain range. With this structure, the drive arm 30 can be vertically rotated within a certain range by the elevating link 302 controlled by the cam device C, and can also be pivotally rotated within a certain range in the horizontal direction. The base finger portion 3 includes a receiving finger 31 and a pushing finger 32. The receiving finger 31 is fixed to the tip of the drive arm 30, and a nipping bar 310 is formed at the tip of the finger 31 by bending it substantially horizontally and at a right angle.
A support plate 311 is provided on the rear portion of the receiving finger 31. A substantially L-shaped support fitting 312 is attached to the rear end portion of the support plate 311, and a guide plate 313 whose central portion is slightly curved upward is attached to the front end portion.

An elliptical play hole 314 is provided in the center of the receiving finger 31. Further, a floating shaft 321 corresponding to the play hole 314 is provided in the substantially central portion of the pushing finger 32. The push finger 32 is loosely attached to the play hole 314 through the play shaft 321 so that the push finger 32 can rotate and move back and forth. At the tip of the pushing finger 32, the holding bar 3 is bent so as to face the holding bar 310.
20 are formed. An attachment piece 322 is formed at the rear end of the push finger 32 by bending at a right angle. Attachment 32
A rod 323 corresponding to the lower surface of the guide plate 313 is provided slightly forward of 2. Reference numeral 324 is a spring that allows the push finger 32 to return to the normal state when no external force acts on the push finger 32. And, the support fitting 312 of the support plate 311 has
Wire tube T2 is attached, and wire tube T
The wire W2 in 2 passes through the support fitting 312 and is attached to the attachment piece 322 of the pressing finger 32. According to the above structure, when the wire W2 is pulled by the cam device C, the state shown in FIG. 5 changes to the state shown in FIG. That is,
After the push finger 32 rotates rightward (clockwise) in the drawing around the idle shaft 321 and the rod 323 comes into contact with the guide plate 313 from below, the push finger 32 is further pulled and moves slightly to the left. .. As a result, the holding bar 320 of the push finger 32 is crimped to the holding bar 310 of the receiving finger 31 from the right side or slightly below, and the string R can be held as will be described later. Further, a hanging shoulder portion 33 is provided below the tip of the receiving finger 31 so that the string R can be hooked when the string R is hooked on the packaging box B and rotated.

Description of Ring Finger Part 4 FIG. 7 is an explanatory view showing the structure of the ring finger part. As shown in FIGS. 2 and 3, a ring finger portion 4 is provided above the base finger portion 3 and adjacent thereto. The ring finger portion 4 is attached to the tip of the drive arm 40. The base portion of the drive arm 40 includes a support member 400 and an axial rod 401.
It is attached through. The drive arm 40 is a cam device C.
The up-and-down link 402 controlled by the above allows the vertical rotation in a certain range. The ring finger portion 4 includes a shaft finger 41 and a moving finger 43. The shaft finger 41 and the moving finger 43 are substantially "L" shaped, and a locking pin 42 is provided at the tip of the shaft finger 41. Further, an insertion ring 44 having an insertion hole having a diameter slightly larger than that of the retaining pin 42 is provided at the tip of the moving finger 43. The retaining pin 42 is inserted through the insertion ring 44. The bearing member 4 is provided at the tip of the drive arm 40.
5 is attached. A shaft pipe 46 is rotatably supported by the bearing member 45. The base portion of the shaft finger 41 is fixed to a part of the peripheral wall of the shaft pipe 46. Axial pipe 46
A crank member 47 is fixed to the rear part. The base of the moving finger 43 is a mounting shaft 430. Axis 430
Is attached slidably through the shaft pipe 46 and the crank member 47. A wire support 48 is attached to the rear end of the attachment shaft 430. A wire tube T3 is attached to the wire support 48. Wire tube T
The wire W3 in the wire 3 penetrates the wire support 48, and its tip is attached to the crank member 47. Reference numeral 470 is a spring, which biases the crank member 47 and the wire support 48 in the direction to separate from each other. The shaft pipe 4
Reference numeral 6 rotates within the bearing member 45 at a constant angle by the crank 403 and the link 404 driven by the cam device C. At this time, the shaft finger 41 and the moving finger 43
Rotates with the shaft pipe 46. Also, the moving finger 4
3 slides along the shaft pipe 46 by the pulling action of the wire W3 operated by the cam device C, and slides in the direction away from the shaft finger 41 while the insertion ring 44 at the tip end is fitted in the latch pin 42. If the pulling force of the wire W3 is released, the action of the spinning 470 causes
Conversely, it slides in the direction of approaching the shaft finger 41.

Description of the connecting finger portion 5 As shown in FIGS. 2 and 3, the connecting finger portion 5 is provided close to the ring finger portion 4. FIG. 8 is a normal perspective view showing the structure of the connecting finger portion, and FIG. 9 is an explanatory view showing the operating state of the connecting finger portion. The connecting finger portion 5 includes a sandwiching finger 51 and a hanging finger 52. The sandwiching finger 51 and the hanging finger 52 are both formed in a substantially "U" shape. An insertion hole 510 is provided at the tip of the sandwiching finger 51, and the tip of the hooking finger 52 is bent substantially at a right angle to the insertion hole 510 side of the sandwiching finger 51 to form a hooking bar 520. As shown in FIGS. 2 and 3, the slide base 50 is attached to the upper angle 910 of the angle frame 91 so as to be slidable within a certain range. The slide base 50 is operated by an L-shaped crank 500 driven by a cam device C and a link 501. The sandwiching finger 51 is fixed to the slide base 50. A shaft pipe 53 is attached to the outside of the base of the sandwiching finger 51 so as to be rotatable within a certain range. A wire support 503 is fixed to the peripheral wall of the shaft pipe 53. A wire tube T is attached to the wire support 503.
4 is attached. Wire W4 in wire tube T4
The tip of the wire holder 50 is provided on the slide base 50.
It is attached to 4. The hanging finger 52 is a shaft pipe 53.
It is fixed to the lower part of the peripheral wall. The hanging finger 52 is biased toward the sandwiching finger 51 side by a spring 502. According to this structure, the wire W is moved by the cam device C.
When 4 is pulled, the hooking fingers 52 rotate together with the shaft pipe 53 in a direction away from the sandwiching fingers 51, the hooking bars 520 are fitted into the insertion holes 510 of the sandwiching fingers 51, and the tip portions of the connecting finger portions 5 are closed. .. Further, when the pulling force of the wire W4 is released, the hanging finger 5
2 rotates in the direction of approaching the sandwiching finger 51, and the tip end portion of the connecting finger portion 5 separates to form a gap portion 59.

Description of Rotating Arm Device 6 Referring to FIG. In FIG. 2, a rotating arm device 6 is provided on the front side of the base frame 90. The rotary arm device 6 has a pedestal 60 fixed to a base frame 90. The pedestal 60 has a shaft pipe 63 as a driving means (belt 6
It is mounted rotatably by a rotating mechanism 9). A rotary arm 61 bent at a right angle is attached to the shaft pipe 63 at a substantially middle portion. A string hooking roller 62 is provided at the tip of the rotating arm 61. The rotating arm 61 has a tension adjusting mechanism (explanation omitted) for appropriately adjusting the tension of the string R even during the operation of hanging the string R on the packaging box B.

Description of the string supply device 7 A string supply device 7 that interlocks with the rotational movement of the rotary arm 61 is provided on the front side of the pedestal 60. The string supply device 7 has a string winding holder 71. The string holder 71 is fixed to the shaft pipe 63 of the rotary arm device 6. The cord winding holder 71 holds a cord winding 72 as shown by an imaginary line in FIG. 2, and the cord R fed from the cord winding holder 71 has a cord hole 73.
It passes through the inside of the shaft pipe 63 and is hooked on the string hooking roller 62 by hanging it on a string hooking portion (not shown) provided on the rotating arm 61. With this structure, even if the rotating arm 61 rotates, the string winding 72 also rotates together, so that the supplied string R is not twisted. The driving means such as each finger in this embodiment is a crank device controlled by the cam device C, a wire pulling device, or the like, but is not limited to this, and other known means may be used.

(Operation) FIGS. 10, 11, 12, and 1
3, FIG. 14, FIG. 16, FIG. 18, FIG. 20, FIG.
FIG. 25 is a schematic plan view showing the procedure of binding the cord.
15 is a schematic perspective view of FIG. 14, FIG. 17 is a schematic explanatory diagram of FIG. 16, FIG. 19 is a schematic perspective view of FIG. 18, and FIG. 21 is a schematic explanatory diagram showing movement of the ring finger portion of FIG. , Figure 2
3 is a perspective view of a main part as seen from the direction L in FIG. The operation of this embodiment will be described with reference to FIGS. For convenience of description, the positions and movement directions of members such as the fingers are schematic plan views (FIGS. 10, 11,
12, FIG. 13, FIG. 14, FIG. 17, FIG. 18, FIG. 21, FIG. 22, FIG. 24, FIG. 25), and the upper, lower, left, and right sides and the front side (the side closer to the packaging box B is called the back direction). The side away is called the front direction). For the members not appearing in the reference drawings in the description, refer to the above description as appropriate. (1) Initial state. (See FIG. 10) First, the auxiliary base plate 10 is fitted so as to fit the size of the packaging box B.
The position of the adjusting body 102 of a is adjusted, and the packaging box B is sandwiched by the plate 1.
It is sandwiched between 1 and the base plate 10 and fixed to the holder part 1. Then, the auxiliary base plate 10a is rotated downward and folded so as not to interfere with the rotation of the holder portion 1. The guide plate 2 is on the front side with a certain distance from the packaging box B, and is located above the center line of the packaging box B. The base finger portion 3 is located in the central portion of the packaging box B with the tip portion thereof obliquely upward to the right, and the tip portion of the receiving finger 31 is in contact with the packaging box B. In addition, the holding bar 320 of the pushing finger 32 has a tip portion that is raised toward the front, and the holding bar 310 and the holding bar 32 are
There is a gap between 0 (see FIG. 5). The ring finger portion 4 is on the front side with a certain distance from the packaging box B, like the conducting plate 2, and the hook pin 42 of the shaft finger 41 is provided.
Is located on the front side in correspondence with the string R described later. Further, the shaft finger 41 and the moving finger 43 are separated from each other. The connecting finger portion 5 is located at a slightly separated position below the base finger portion 3 and the ring finger portion 4, and the packaging box B
It is on the near side with a certain distance from. The string R is hooked on the string hooking roller 62 of the rotary arm 61, and the leading end side is provided with the guide plate 2
It is gripped by the sandwiching claw portions 21 and 22. The string R is located between the base finger portion 3 and the ring finger portion 4, and is in contact with the hanging shoulder portion 33 of the base finger portion 3 from the right side.

(2) The first winding of the string R. (Fig. 11
With reference to the fingers 3, 4, 5 and the conductive plate 2 in the initial state shown in FIG. 10, the rotary arm 61 is moved from the lower side to the inner side to the upper side.
The state shown in FIG. 11 is obtained by rotating the front side almost once. That is, with the rotation of the rotating arm 61, the string R is fed out while adjusting the tension, rubs through the sides of the guide plate 2 and the ring finger portion 4, and is set to be slightly floating on the front side of the packaging box B. .. (3) Rotation of the packaging box B. (Refer to FIG. 12) The fingers and the guide plate 2 do not move in the initial state, and the holder portion 1 rotates 90 degrees counterclockwise.
Also rotates 90 degrees. The rotation center of the holder portion 1 is set near the hanging shoulder portion 33 of the base finger portion 3 (a portion corresponding to substantially the central portion of the held packaging box B). As a result, the string R crosses in a cross shape around the hanging shoulder portion 33 of the base finger portion 3. (4) The second winding of the string R. (See FIG. 13) The ring finger portion 4 descends to the back side so as to approach the packaging box B. At the same time, the moving finger 43 moves to the shaft finger 41 side. As a result, the latch pin 42 moves the moving finger 43.
To the right of. Next, the rotary arm 61 is attached to the above (2).
Rotate almost once as in. The string R is paid out while adjusting the tension, rubs through the side of the guide plate 2, contacts the front side of the hooking pin 42 of the ring finger portion 4, and stops.

(5) Hook the string R on the base finger portion 3 by the guide plate 2. (See FIGS. 14 and 15) The guide plate 2 rotates rightward while holding the cord R, and the cord R in the portion between the clamping claw portions 21 and 22 is clamped by the clamping bar 310 of the base finger portion 3. And the nipping bar 320. Next, the tip portion of the pushing finger 32 is lowered, and the string R is clamped by both the clamping bars 310 and 320 (state of FIG. 15). At the same time, the pinching of the string R by the pinching claws 21 and 22 is released. (6) Hooking the string R by the base finger portion 3. (Fig. 1
6, see FIG. 17) The base finger portion 3 is pulled obliquely downward to the left. Both clamping bars 310 and 320 enter between the cross portion of the string R and the packaging box B while holding the string R therebetween. Then, by further pulling, the front side of the string R is wound around the cross portion of the string R from the front side to the back side. At this time, the string R is folded back by the receiving claw portion 211 so as not to apply an unreasonable force to the cross portion of the string R, and becomes the state of FIG. (7) Moving the guide plate 2 and the connecting finger portion 5. (Fig. 1
8, see FIG. 19) The guide plate 2 moves as shown by imaginary lines in the drawing, and the receiving claws 211 and 221 and the pressing claws 21 of the holding claws 21 and 22 are moved.
The gaps 2, 222 are fitted into the string R on the side floating from the packaging box B. At this point, the clamping claws 21, 22 are
The string R is not clamped by the above, and the string R is not clamped until the process (10) is finished so that the string R can be paid out. At the same time, the connecting finger portion 5 is located slightly on the front side of the packaging box B so that the connecting finger portion 5 moves to the central portion and covers the cross portion of the string R. The sandwiching finger 51 and the hooking finger 52 of the connecting finger portion 5 are expanded, and the tip end portion of the hooking bar 520 and the insertion hole 5 are inserted.
A gap 59 is formed between the gaps 10.

(8) Actuation of the wheel finger portion 4. (Fig. 2
0, see FIG. 21) While the string R is hooked on the hooking pin 42, the ring finger portion 4 rotates and moves upward in FIG. At this time,
The drive arm 40 moves up and down so that the tips of the shaft finger 41 and the moving finger 43 do not come into contact with the lower connecting finger portion 5. At the same time, the string R is paid out,
It hangs on the hanging finger 52 of the connecting finger portion 5 (FIG. 23).
See also). (9) Operation of base finger portion 3 and connecting finger portion 5
Hook the string R to the. (Refer to FIG. 22 and FIG. 23) The base finger portion 3 slightly rises to the front side while holding the tip end portion of the string R between the holding bars 310 and 320, and the string finger 51 and the hanging finger 52 are covered with the string R. It moves diagonally to the upper right to cover it further. At this time, the sandwiching portion of the string R by the sandwiching bars 310 and 320 is the sandwiching finger 5
1 and after moving from the tip of the hanging finger 52 to the front side,
Moves a little to the back side. As a result, the string R enters the gap 59 between the pinching fingers 51 of the connecting finger portion 5 and the hooking fingers 52. Then, the sandwiching finger 51 and the hooking finger 52 are closed, and the tip end of the hooking bar 520 is inserted into the insertion hole 5.
10 and the state shown in FIGS. 22 and 23 is obtained. (10) Pull-up of the string R by the knotting finger portion 5. (Refer to FIG. 24) While holding the tip end portion of the string R between the holding bars 310 and 320, the knotting finger portion 5 hooks the string R and moves diagonally downward leftward to bind the string R together. The string R is knotted by forming two loops L1 and L2 at the portions of the ring finger portion 4 and the knotting finger portion 5.

(11) Clamping and releasing the hook of the string R by the fingers 3, 4, and 5. (See FIG. 25) The base finger portion 3 includes the receiving finger 31 and the pushing finger 3.
2 opens to release the pinching of the string R, and moves diagonally downward to the left. In the ring finger portion 4, the moving finger 43 moves to the right side, the string R is pushed out from the hooking pin 42, and the ring finger portion 4 comes off to form the front loop L1 of the knot. In the connecting finger portion 5, the sandwiching finger 51 and the hooking finger 52 are opened, the string R is removed from the gap portion 59, and this becomes the rear loop L2. Then, the holding claws 21 and 22 of the guide plate 2 are operated to grip the string R, and then the string R is cut by the cutter 24. (12) Return to the initial state. (Refer to FIG. 25 and FIG. 10) The holder part 1 rotates to return to the initial state. The clamping by the holder part 1 is released and the packaging box B is removed. The conducting plate 2, the base finger portion 3, the ring finger portion 4, and the connecting finger portion 5 are returned to the initial state of the above (1). The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims.

[0020]

The present invention having the above-mentioned structure has the following effects. (A) The knot is a bow with two loops, and since the position of the knot can be provided at the cross portion of the string, it has a good appearance and can be used for packaging high-grade products such as high-grade Japanese confectionery. (B) Since the knot is a bow knot, it is easier to untie than the conventional one, and the packing box is not deformed by forcibly shifting the string, and there is no need to prepare scissors.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing the overall structure of an embodiment.

FIG. 2 is a perspective view of a main part viewed from the right side.

FIG. 3 is a perspective view of a main part as seen from the left side surface.

FIG. 4 is an explanatory diagram of a drive mechanism of a holder unit.

FIG. 5 is a perspective view in a normal state showing a structure of a base finger portion.

FIG. 6 is a perspective view showing an operating state of a base finger portion.

FIG. 7 is an explanatory diagram showing a structure of a ring finger portion.

FIG. 8 is a perspective view of a normal state showing a structure of a finger unit for connection.

FIG. 9 is an explanatory diagram showing an operating state of a connecting finger portion.

FIG. 10 is a schematic plan view illustrating an initial state of each finger portion and the conductive plate.

FIG. 11 is a schematic plan view showing the first wrapped state of the string.

FIG. 12 is a schematic plan view showing a rotating state of the packaging box.

FIG. 13 is a schematic plan view showing a second wrapped state of the string.

FIG. 14 is a schematic plan view showing a state in which a cord is hooked on a base finger portion by a conducting plate.

FIG. 15 is a perspective view of a main part of FIG.

FIG. 16 is a schematic plan view showing a state in which the string is hooked by the base finger portion.

FIG. 17 is a schematic explanatory diagram of a main part of FIG. 16.

FIG. 18 is a schematic plan view showing a moving state of the conductive plate and the connecting finger portion.

FIG. 19 is a perspective view of a main part of FIG. 18.

FIG. 20 is a schematic plan view showing an operating state of the wheel finger portion.

FIG. 21 is a schematic explanatory view showing the movement of the ring finger portion of FIG. 20.

FIG. 22 is a schematic plan view illustrating the operation of the base finger portion and the state in which the cord is hooked on the connecting finger portion.

FIG. 23 is a perspective view of a main part as seen from the direction L in FIG. 22.

FIG. 24 is a schematic plan view showing a pull-knot state of a string by the connecting finger portion.

FIG. 25 is a schematic plan view showing a state in which the fingers R are clamped and unhooked by the fingers.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder part 2 Guide plates 21, 22 Clamping claw part 24 Cutter 3 Base finger part 31 Receiving finger 32 Pushing finger 4 Wheel finger part 41 Shaft finger 42 Locking pin 43 Moving finger 44 Inserting ring 5 Connecting finger part 51 Clamping finger 52 hanging Finger 6 Rotating arm device 7 String feeder

Claims (1)

[Claims] 1. A cord tying device for tying a string (R) around a packaging box (B) in a cross shape, the tying device tying the packaging box (B) and connecting the packaging box (B) to the packaging box (B). A holder part (1) which can be rotated in the range of approximately 90 degrees in the horizontal direction about the center of rotation, and a guide plate (2) having a cutter (24) and holding claws (21) (22). A base finger portion (3) having a receiving finger (31) and a pushing finger (32), a shaft finger (41) having a retaining pin (42) at the tip, and the retaining pin (42). A ring finger portion (4) having a moving finger (43) having an insertion ring (44) slidably fitted therein; and a connecting finger portion (5) having a sandwiching finger (51) and a hanging finger (52). ) ;; and a rotating arm device (6) for vertically rotating around the holder part (1) and winding the string (R) around the packaging box (B); and a string supply device (7) for supplying the string (R). ) And ;, the guide plate (2) initially has the clamping Part (21) (22) in the cord (R)
So that the tip portion of the base finger portion (3) is sandwiched between the base finger portion (3) and the receiving finger (31) and the pushing finger (3).
2) Pass the tip of the string (R) over, and after bundling the string (R), sandwich the part that will be the tip of the string (R) of the next bundling, and use the cutter (24). The string (R) is to be cut, and the base finger part (3) is initially located substantially in the center of the upper surface of the packaging box (B), and the base plate (2) is connected to the string (R). Receiving the tip, the receiving finger (31) and the pushing finger
(32) Hold the end of the string (R) between the
The cross part of the string (R) hung on the cross in (B) and the packaging box
(B) so that it passes through the cross section of the string (R) and the front loop (L1) forming part by the ring finger part (4), and after binding the string (R) The string (R) is to be clamped, and the shaft finger (41) and the moving finger (43) of the ring finger portion (4) hook the string (R) with the latch pin (42). The connecting finger portion (5) is formed by the pinching finger (51) and the hooking finger (52) so that the front loop (L1) and the cross portion of the string (R) are connected to each other. The base finger portion (3) covered on the loop (L1) forming portion
The string (R) is clamped by the front side of the string (R) so that the string (R) is bound at the cross portion while forming the rear loop (L2) so that the string (R) is moved. Hanging device.