JPS6144759B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing device for sealing a stopper of a container with a string.

Sealing the stopper of a container with a string has been practiced for a long time, but in the past, most of the tying of the string was done manually. Although mechanization is progressing, the machines are generally complex and expensive, and have not become widespread. The most difficult part of mechanization, and the one that complicates the machine, is forming the knots in the strings, and improvements in this aspect have been particularly desired.

In view of these circumstances, the present invention provides a stopper sealing device using a string that can particularly easily form a knot.

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 shows a perspective view of a mechanism for pulling out and cutting a string 1 of a required length. In the figure, a belt-shaped string 1 is wound around a supply reel 2, and from the supply reel 2 to a drive roller 3 and a pressure roller 4, and between the drive roller 3 and another pressure roller 5.
It is pulled out between the ends and the tip is cut off by a cutter 6. As shown in FIG. 2, the driving roller 3 is formed with a groove 3a for guiding the string 1, and the pressing rollers 4 and 5 have annular protrusions 4a and 5a that engage with the groove 3a. is formed so that the string 1 can be guided reliably.

The drive roller 3 is linked to an electric motor (not shown), and is moved from a take-up reel 7 located in the front to a take-up reel 7 in a previous process as described later.
When the string wrapped around the string is pulled out and becomes empty, the drive roller 3 is rotationally driven by the electric motor,
A string 1 is sent out from between a driving roller 3 and a pressing roller 5. In synchronization with this, the arm 8 is driven by a cam mechanism (not shown) or other drive mechanism linked to the electric motor.
is swung counterclockwise in Figure 1, and the roller 9 at the tip
The tip of the string 1 sent out from between the driving roller 3 and the pressing roller 5 is brought into pressure contact with the outer peripheral surface of the take-up reel 7.

The take-up reel 7 has a groove 7a on its outer circumferential surface for guiding the string 1, and has a large number of suction holes (not shown) on the inner surface of the groove 7a. and communicates with a negative pressure source. Therefore, when the tip of the string 1 is pressed against the inner surface of the groove 7a of the take-up reel 7 by the roller 9, the string 1 is attracted into the groove 7a by negative pressure, and at the same time, the electric motor (not shown) is activated. The take-up reel 7 is rotated in synchronization with the rotation of the drive roller 3. Take-up reel 7 is 1
When it is about to rotate, the cutter 6 operates to cut the string 1, and at the same time, the rotation of the drive roller 3 is stopped. The take-up reel 7 then rotates a little, attracts the rear end of the string 1, completes one rotation, and then stops there. Thereafter, the arm 8 swings in the opposite direction to that described above and returns to its original position. In this state, the cut string 1 surrounds the outer periphery of the take-up reel 7, with its leading end and trailing end facing each other in close proximity.

The winding reel 7 has a notch 7b at a position 180 degrees offset from the position where both ends of the winding string 1 face each other, that is, at approximately the center of the cut string 1. A pair of engagement arms 10 and 11 are disposed close to the notch 7.
When the take-up reel 7 rotates once and stops, the tips of the pair of engagement arms 10 and 11 enter into the notch 7b and engage the engagement portions 10a and 11a of the respective engagement arms 10 and 11. It engages the center part of the string 1 and further operates to pull the center part of the string 1 out of the take-up reel 7 against the suction force of the string 1 due to the negative pressure.

Further, a pair of clamping rollers 12 and 13 are arranged at upper and lower positions outside the notch 7b, and each clamping roller 12 and 13 is connected to an operating arm 14 and 15, respectively.
It is rotatably attached to the tip of the Each operating arm 14, 15 is swingable about a fulcrum 16, and is actuated by a cylinder device or the like provided in a storage box 17 fixed to the machine frame to clamp and hold the pair of arms 14, 15. The rollers 12 and 13 can be pressed against or separated from each other. The pair of clamping rollers 12 and 13 are waiting in a state separated from each other, and the above-mentioned engaging arms 10 and 11 pull out the central part of the string 1 from the take-up reel 7 and place it between the pair of clamping rollers 12 and 13. When the rollers 12 and 13 are passed through, they are immediately brought into pressure contact with each other, and the engagement portions of the engagement arms 10 and 11 are formed between the grooves 3a provided on the rollers 12 and 13, the grooves corresponding to the annular protrusions 4a, and the annular protrusions. 10a and 11a are folded back to hold the double string 1.

However, as shown in FIG.
The engaging arms 10 and 11 are movable in the xy axis directions in a horizontal plane, and the distance between the engaging arms 10 and 11 can be expanded or contracted by the third cylinder device 22. The direction in which the string 1 is pulled out by the engaging arms 10 and 11 is determined by the direction in which the string 1 is pulled out from the transfer path 24 of the container 23.
The direction is perpendicular to . This container 23 is
As shown in FIG. 4, the upper end of the neck portion 25 has a flange portion 26 projecting outward, and the string 1 is wound around the lower part of the flange portion 26 to form a peripheral portion 1A.
At the same time, a string is stretched over the stopper 27 from the back side to the front side of the container 23 to form a hanging part 1B, and a knot 1C is formed at the intersection of the surrounding part 1A and the hanging part 1B. The plug 27 is attached to the string 1 by gluing the sealing member 28 to the end of the string.
I am trying to seal it with. In this way, the flange portion 26 prevents the string 1 wound around the lower part of the flange portion 26 from coming off upward, and also forms a gap 29 between the plug 27 and the hanging portion 1B of the string wrapped around the plug 27. It's helpful.

The string 1 pulled out in the direction perpendicular to the transfer passage 24 of the container 23 by the engaging arms 10 and 11 is at a lower height position of the flange portion 26 of the container 23, and in this state, the container 23 is at its height. The container 23 is moved forward on the transfer path 24 by the pushing member 30 with the front side facing the take-up reel 7, and the string 1 is hooked to the lower part of the flange portion 26. The container 23 is moved from the transfer path 24 onto the rotary table 31. Then, the clamper 32 provided on the rotary table 31 grips the container 23. In this state, the tip of the string 1 is engaged with the engaging portions 10a, 11a of the engaging arms 10, 11, the middle is engaged with the neck 25 of the container 23, and the rear end is engaged with the pair of clamping rollers 12, 13, respectively. As a result, the entire structure is stretched into a U-shape. Note that the direction in which the string 1 is pulled out from the holding rollers 12 and 13 is different from the direction in which the string 1 is pulled out by the engaging arms 10 and 11.
As it moves forward, it changes in its forward direction, so that the winding reel 7 and the pair of pinching rollers 12, 1
3 is set obliquely with respect to the transfer passage 24 so as to face in the middle direction of the variation range in consideration of the change in the drawing direction.

Next, from this state, as shown in FIG. 5, when the distance between the pair of engaging arms 10 and 11 is widened, the engaging arms 10 and
The central folded portion 1a of the string 1 that was engaged with the string 1 is expanded to form a loop. Then, the gripping rod 35 passes through the ring and grips the end of the string 1 which is held between the pinching rollers 12 and 13, and then the gripping rod 35 starts to move backward and grips the end of the string 1. part is forcibly released from the gripping rollers 12, 13 and passed through the ring. On the other hand, when the container 23 is supplied from the moving path 24 onto the rotary table 31 and gripped by the clamper 23, the container 2
The guide member 36 of the string that was located above and not in contact with the guide member 3 is lowered, and the engaging portion 3 of the guide member 36 is lowered.
6a facing rearward in the direction of transport of the container 23,
It is located at the same height as the rear part of the string 1.

Therefore, when the rear part of the string 1 is rotated in a horizontal plane about the neck 25 of the container 23 while being wrapped around the neck 25 of the container 23 due to the retreat of the gripping rod 35, a part of the string 1 is engaged with the guide member 36. It comes to engage with the mating portion 36a. The gripping rod 35 can move forward and backward in its axial direction, and can also rotate and move up and down. Along with the backward movement, it is also operated in the rotational direction to keep the tension of the string 1 constant. Note that the mechanism for operating the gripping rod 35 as described above is conventionally well known, and therefore a description thereof, including a similar mechanism described later, will be omitted.

When the rear end of the string 1 is passed through the loop by retracting the gripping rod 35, the pair of engaging arms 10,
11 advances toward the container 23 side, and its engagement arm 1
0, 11, neck 25 of container 23, guide member 36
The ring formed around the neck portion 25 between the engaging portion 36a and the gripping rod 35 is contracted. At this time, the gripping rod 35 rotates in the direction of the arrow in FIG. 5 to keep the tension of the string 1 constant. When the ring around the neck portion 25 becomes smaller, both the engaging arms 10 and 11 retreat toward the take-up reel 7 in a direction perpendicular to the moving feed path 24, and the engaging portions 10a and 11a are pulled from the center folded portion 1a of the string 1. to release. Thereafter, the engaging arms 10, 11 and the gripping rollers 12, 13 cut the string 1 from the supply reel 2 to a predetermined length as if returning to their original states.

When the gripping rod 35 rotates in the direction of the arrow in FIG. 5 to tension the string 1, the folded portion 1a
As shown in the figure, it is located close to the center of the neck on the back side of the container 23. Then, the presser rods 37 and 38 on both sides of the container 23 shown in FIG. 3 move forward and lightly press the string that is wrapped around the front part of the container 23 in the transport direction slightly forward of the center of the right back surface. wear. In this state, the guide member 36 moves upward and rotates in the direction of the arrow in FIG.
Lift up the string 1 that was engaged with the engaging portion 36a.
As a result, the string 1 is attached to the pair of presser rods 37, 3.
The rear portion from 8 is bent upward to form a hanging portion 1B that covers the stopper 27. As the guide member 36 continues to rotate, the string 1 is automatically disengaged from the engaging portion 36a of the guide member 36, and the string 1 is immediately kept under constant tension by the gripping rod 35.

When the guide member 36 rises to the original non-operating position, the bifurcated second guide member 40 shown in FIGS. 3 and 7 descends, and the guide portion 40a of the string 1 formed on the guide member 40 Set at the height of string 1. Then, the gripping rod 35 that grips the end portion of the string 1 rotates in the direction of the arrow in FIG. 7 and extends its entire length, thereby passing the string 1 over the pair of guide portions 40a. The second guide member 40 is reciprocally rotated by an electric motor 41, and thereby handles the string 1 of the pair of guide portions 40a to tightly wrap the string 1 around the container 1. During this time, the second gripping rod 42 extends and rises from the presser rod 37 toward the stopper 27.
9 (see Fig. 4), and the guide member 4
When the rotation of 0 stops, the string 1 between the pair of guide parts 40a is gripped.

As shown in FIG. 8, the second gripping rod 42 has a hollow rod 43, an operating rod 44 slidably provided on its shaft, and a notch 45 formed at the tip of the hollow rod 43. The string 1 is captured in the corner 45a of the notch 45 by the forward and backward movements of the gripping rod 42 and the slight elevation and descent of the guide member 40, and in this state, by advancing the operating rod 44, the string 1 is made hollow. It can be held by pushing it into the rod 43.

When the second gripping rod 42 grips the string 1, the above-mentioned first gripping rod 35 releases its grip on the string 1, and the guide member 40 loosens the tension of the string 1 and retreats upward. Next, the second gripping rod 42 starts to retreat, passes the end of the string 1 into the wrapping part 1B, and then descends slightly downward to apply a constant tension to the string 1 again. As a result, the string 1 wraps around the lower neck portion of the flange portion 26 to form the peripheral portion 1A. After this, the presser rods 37 and 38 move back to release the presser foot of the string 1, but the intersection of the hanging portion 1B and the surrounding portion 1A on the front side of the container 1, that is, on the presser rod 37 side, is connected to the second gripping rod. 42, the string 1 passed inside maintains its intersection, and on the other hand, the intersection between the hanging portion 1B and the surrounding portion 1A on the back side of the container 1, that is, on the presser rod 38 side, is formed as described above. Since the folded portion 1a maintains the formation of the intersection, the string will not come undone even when the presser rods 37, 38 release the string.

When the presser rods 37 and 38 release the presser foot of the string 1, the rotary table 31 rotates in the direction of the arrow in FIG. 3 to rotate the container 23. In this state, as shown in FIG. 9, the end of the string 1 is turned 180 degrees outward from the inside of the lower part of the hanging part 1B on the front side and further extends to the tip of the second gripping rod 42 on the lower side of the back side. . In this state, the second gripping rod 4
The third gripping rod 50 having a configuration similar to that of the second gripping rod 42 moves forward, passes above the string 1 extending from the container 23 to the second gripping rod 42, passes inside the rising part, and protrudes by a predetermined amount. Stop. Next, the second
The gripping rod 42 moves upward while keeping the string 1 under tension, moves toward the third gripping rod 50, and starts moving forward from there. As a result, as shown in FIG. 10, the string 1, which had been folded back from the inside to the outside of the hanging portion 1B, wraps upward from the bottom of the third gripping rod 50 via the inside circumferential surface.
Furthermore, it passes outside the spanning portion 1B above the third gripping rod 50. After this, the second gripping rod 4
2 moves to the back side of the container 23 again and ties the string 1 to the third
It is lowered to a position slightly higher than the upper surface of the gripping rod 50 (see the imaginary line in FIG. 10).

In this state, the second guide member 4 mentioned above
0 descends again and its pair of guide portions 40a are shown by imaginary lines in FIG.
Next, the guide member 40 is moved slightly to the surface of the container 23 while rotating the pair of guide parts 40a to place the end of the string 1 onto the notch 51 of the third gripping rod 50. position. Then, when the guide member 40 descends and positions the string 1 in the notch 51 of the third gripping rod 50, the third gripping rod 50 moves back slightly to position the string 1 in the corner 51a of the notch 51. The operating rod 52 moves forward and the string 1
while gripping the operating rod 4 of the second gripping rod 42.
4 moves back and releases the grip on the string 1.

Thereafter, when the guide member 40 loosens the tension on the string 1 and retreats upward, the third gripping rod 50 retreats, and as shown in FIG. The end of the string 1 is passed through the loop 1b formed by wrapping it around the inner circumferential surface. At this time, the loop 1b of the string 1 becomes loose, but the base of the loop 1b is connected to the container 23 mentioned above.
When it rotates, it is folded back and tightly tightened to the container, forming a crease, so it almost maintains that state. When the tip of the third gripping rod 50 retreats beyond the loop 1b, the third gripping rod 50
The tip of the gripping rod 50 moves downward and strongly pulls the string 1 downward to form a knot 1C.

When the knot 1C is formed, the third gripping rod 5
0 releases the grip on the string 1, and the clamper 32 releases the grip on the container 23. Then, the second extrusion member 53 shown in FIG.
Eject 3. In addition, the string beyond knot 1C is
Thereafter, it is cut to a required length and the sealing member 28 is adhered to that portion, but it is possible to incorporate a mechanism capable of performing such an operation into the above-described structure.

As described above, the present invention forms a peripheral part by winding a string around the neck of a container, and also forms a wrapping part by wrapping the string around the stopper from the surrounding part, and connects the surrounding part and the wrapping part. A stopper sealing device using a string that seals the stopper by forming a knot at the intersection, the sealing device being inserted into the inside of the wrapping portion so as to be freely advanced and retractable, and having a gripping portion for gripping the string at the tip. The provided gripping rod A, the gripping rod B that grips the string pulled out from the intersection, and the insertion direction of the gripping rod A into the hanging portion by moving the gripping rod B and the string gripped by it. A drive means B that winds the gripping rod A upward from below the inner circumferential surface of the container side on the rear side thereof, and then pulls out the gripping rod A obliquely forward to the outside of the opposite side of the container through the outside of the above-mentioned hanging part. The cord is inserted between the string pulled out diagonally forward by the gripping rod B and the gripping rod A, and as the gripping rod B is moved by the driving means B, it is relatively engaged with the string pulled out diagonally forward. A guide member was provided, which was bent together, and the string on the front side of the bent portion was crossed over the gripping portion of the gripping rod A to be gripped by the guide member, and the gripping rod A was pulled out from the hanging portion and gripped by the guide member. It is equipped with a driving means A that causes a string to pass through the inside of the wrapping portion and into a loop formed by winding the string from below to above the inner peripheral surface of the container side of the gripping rod A to form a knot. Therefore, there is an effect that the mechanization for forming the knot can be facilitated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a string cutting mechanism showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the contact portion between the drive roller 3 and the pressing roller 4 or 5 in FIG. 1, and FIG. 1 is a perspective view showing the overall structure including the mechanism of FIG. 1, FIG. 4 is a perspective view of a container sealed by the device of the present invention, FIGS. 5, 6, 7, 9, 10 and 11 are perspective views showing steps in the apparatus of the present invention, respectively, and FIG. 8 is an enlarged sectional view of the tip portion of the gripping rod 42. 1... String, 1A... Surrounding part, 1B... Hanging part,
1C...knot, 1a...folded part, 1b...loop, 23...container, 25...neck, 27...
Plug, 35, 42, 50...gripping rod.

Claims (1)

[Claims] 1. Wrap a string around the neck of the container to form a peripheral part, wrap the string from the peripheral part to the stopper to form a wrapping part, and form a knot at the intersection of the surrounding part and the wrapping part. A stopper sealing device using a string for sealing the stopper, which includes a gripping rod A that is inserted into the inside of the hanging portion so as to be movable forward and backward, and has a gripping portion at its tip for gripping the string; a gripping rod B that grips the string pulled out from the intersection;
This gripping rod B is moved and the string gripped by it is wound from below to above the inner peripheral surface of the container side of the gripping rod A on the rear side with respect to the direction in which the gripping rod A is inserted into the hanging portion. A driving means B that pulls the gripping rod A diagonally forward to the outside on the side opposite to the container side through the outside of the hanging part, and a string pulled out diagonally forward by the gripping rod B and the gripping rod A. inserted, said driving means B
As the gripping rod B moves, it relatively engages and bends the string pulled out diagonally forward, and the string on the front side of the bent portion crosses the gripping portion of the gripping rod A and grips it. a guide member that pulls out the gripping rod A from the wrapping portion and holds the string thereto, and an inner side of the wrapping portion;
A stopper sealing device using a string, comprising a driving means A that causes the holding rod A to pass through a loop formed by winding from the bottom to the top of the inner surface of the container side of the holding rod A to form a knot.