JP2655982B2 - Work opening sealing method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for sealing a work opening, and more particularly to a method and a device for sealing a work opening for sealing an opening of a work in which articles are stored with an adhesive tape.

[0002]

2. Description of the Related Art Conventionally, a long belt conveyor 100 as shown in FIG.
Two circulating belt bodies 200 and 300 are provided at upper and lower positions to be opposed to the conveyor 100, and a work supply unit 400 is provided upstream of the conveyor 100, while the belt bodies 200 and 300 are provided. And a tape feeder 500 including a tape guide member 500a and a cutter 500b. The opening 701 of the work 700 supplied to the work supply part 400 is folded back at the end of the belt body 300. The opening 701 is folded back by the action, and the cutter 5
The tape piece cut at 00b is temporarily attached by the operation of the guide member 500a.

The work 700 to which the tape is temporarily attached moves further on the conveyor 100 to the downstream side and is held between the belt body 200 and the conveyor 100. By this sandwiching, the tape piece temporarily attached to the folded portion is pressed into contact with the tape to seal the opening of the work. (52-7
(See No. 504)

[0004]

However, in the above-mentioned conventional apparatus, the use of a long belt conveyor increases the area occupied by the apparatus, requires a large space for installation, and requires the opening to be turned back. Since the opening is entangled with the turning plate provided at the downstream end of the belt body while moving the work, the opening is turned back in an unstable state, and the turning state becomes uncertain. Alternatively, the tape piece temporarily attached to the uncertain folded portion is connected to the conveyor 100 and the belt body 20.
When the workpiece is forcibly pressed against the work at 0, a tape piece is stuck to the opening and sealed.

[0005] Therefore, the air in the work is compressed by the pressure at the time of pressing, and in the case of a work in which pantyhose or socks are stored, the work itself deforms its shape and generates wrinkles or looseness, thereby causing unreliable sealing such as sealing errors. There has been a problem that the work is stopped and the product value of the work is significantly reduced. In particular, in a work in which a large number of such soft objects are stored and the thickness is large, the tendency is large because the work is bulky, and tight packaging of the bag mouth is extremely difficult due to the large unevenness.

The present invention has been made in view of the above problems, and has as its object to accommodate a mounted work by moving the holding member holding the tape to the mounted work while moving the tape. Provided is a method and a device for sealing a work opening that can reliably seal an opening of a work in a regular state without wrinkles or looseness without being affected by the degree of bulging of the work due to irregular shapes of articles. It is in.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention holds an adhesive tape with a holding member, and moves the tape on one of the holding members while moving the holding member holding the tape in an arc. It is characterized in that it is attached while holding down along the shape of the opening, and it is a device that seals the opening by attaching tape to the opening of the work containing the articles in such a method. A first swing lever whose free end swings in an arc shape between the work mounting position and the tape supply position, and is supported by the free end of the first swing lever, and swings. A second swing lever, wherein the second swing lever is provided with a tape gripping portion, and the swing portion of the first swing lever grips the tape from the tape supply position. The first swing lever swings when the workpiece is placed on the workpiece. Along tape gripped by the retreating movement of the swing lever on the work opening sealing portion shape of the work is characterized in that the sticking.

In this case, it is preferable to have a widening mechanism for widening the opening of the work, and a folding mechanism for folding back the widened opening.

[0009]

According to the above construction, the tape is stuck while holding the tape along the shape of the opening of the work while holding the tape holding the tape while moving the holding member in a circular arc, so that the apparatus can be constructed in an upper stack structure. This eliminates the need for a long belt conveyor for moving the workpiece, reduces the area occupied by the apparatus, makes the apparatus compact, and retracts the second swing lever without being affected by the bulging shape of the workpiece. As a result, it is possible to attach the tape to the opening very naturally under the same conditions as when artificially attaching with your fingertips,
Wrinkling and loosening of the sealed work can be prevented, and the opening of the work can be sealed in a regular state.

[0010] Further, the shape of the opening before sealing can always be formed in a constant and stable shape by the operation of the widening mechanism and the folding back mechanism, so that the tape can be more securely adhered to the opening. In addition, the shape after the tape is attached can be gracefully adjusted.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a work opening sealing method and apparatus according to the present invention. FIG. 1 is a schematic side view showing the apparatus. The device is roughly divided into a tape feeding unit 1, a tape cutting unit 2, a tape transport mechanism 3, a work transfer unit 4, a work placement unit 5, a widening mechanism 6, a folding mechanism 7, and support these. Machine frame 8 and the machine frame 8
And a leg 9 for supporting the vehicle.

The tape feeding section 1 includes a feeding roller 1
a, a guide roller 1b, and a feed case main body 1c having a tape feed-out port. The roll-shaped adhesive tape TR having an adhesive surface on one surface is stored in a freely feedable manner, and the tape TR is fed out. Through the roller 1a and the guide roller 1b, the release end is
The tape is fed out by a predetermined length from the tape feed-out port c to a position facing the second swing lever 3a and the tape gripping plate 3b in the tape transport mechanism 3 described later.

The tape cutting means 2 includes a cutter blade 2a,
A cutter cylinder 2b that supports and moves up and down is configured to move downward when the tape TR of the tape feeding section 1 is fed by a predetermined length, and cut the tape TR. The tape transport mechanism 3 is a mechanism mainly characterized by the present invention, and is a long rod-shaped first swing lever 3d rotatably supported by a fixed arm 3c erected on the machine frame 8;
A second swinging lever 3a supported on the free end side of the first swinging lever 3d and swinging with a turning radius smaller than the turning radius of the first swinging lever 3d; and the first swinging lever 3d. And a retractable swing cylinder 3e that swings the first swing lever 3d by the extension operation of the swing cylinder 3e.
Is swingable downward in an arc shape.

The second swinging lever 3a is formed in a short rod shape having a concave cross section in which a roller 3f made of an elastic material is rotatably supported at its free end.
The swinging lever 3d is rotatably supported, and a pulling elastic machine 3h is hung between the non-free end side of the swinging fulcrum 3g and the first swinging lever 3d. The free end of 3a is urged downward.

Between the second swinging lever 3a and the first swinging lever 3d, there are provided a tape gripping cylinder 3k and a tape releasing cylinder 3j which perform a short operation.
Further, a tape holding plate 3 is provided on the lower surface of the second swing lever 3a.
b is provided. The tape gripping plate 3b is made of a narrow plate parallel to the back surface of the second swinging lever 3a in a very close proximity and is swingably supported concentrically with the pivot 3g of the second swinging lever 3a. The tape gripping surface is formed by applying a means (for example, a fine uneven surface like a knurl) to the surface facing the free end side back surface of the second swing lever 3a to reduce the adhesive force of the tape. At the same time, a pulling ram 3m is hung between the other end via the fulcrum 3g and the first swing lever 3d to urge the free end of the tape gripping plate 3b downward, and to lock the back surface thereof. The second locking lever 3a is locked so as to be independently locked regardless of the operation of the second swing lever 3a.

The work transfer means 4 is composed of a belt conveyor 4a provided at an upper portion of the machine frame 8 and below the tape feeding section 1, and having a slanting angle which is inclined in the transfer direction. Guide plates 4b and 4b for guiding the work W are provided upright on both sides of the conveyor 4a.
The work W that has separated from the end of the work piece naturally slides down to the work placement section 5 described below by its own weight and inertia.

The work mounting section 5 includes a work transfer means 4
Two work receiving plates 5a, 5a, which are arranged at the arrival position of the work W sliding down from the work W, have the same inclination angle as the work transfer means 4, and open and close in a direction orthogonal to the flow direction of the work W. And two receiving plate cylinders 5b and 5b for opening and closing the receiving plates 5a and 5a, and a work stopper 5c for positioning a work at a predetermined mounting position. The receiving plates 5a, 5a are closed so that the work W can be placed by the operation of the above, and after the work W is sealed, the receiving plates 5a, 5a are separated by the reducing operation of the cylinders 5b, 5b. Then, the closed state is opened, and the placed work W is naturally dropped directly below.

The work widening mechanism 6 is provided directly below the work transfer means 4 and has a single cylinder 6a that expands and contracts with a long stroke, and moves back and forth in conjunction with the operation of the cylinder 6a. A pair of narrow widening plates 6b, 6b supported so as to be close to and away from each other in the orthogonal direction
Is provided between the widening plates 6b, 6b and the machine frame 8, and when the widening plates 6b, 6b advance, the widening plates 6b, 6b are separated from each other to enlarge a pair of spaces, When the work W is placed on the work placing portion 5, the widening plates 6b, 6b are brought closer to each other to reduce the distance between the widening plates 6b and 6b. 6
b, 6b advance by the extension operation of the cylinder 6a in a state in which the interval is reduced, and insert the tip thereof into the opening W1 of the placed work W, and in conjunction with the advance operation of the widening plates 6b, 6b. By operating the link mechanism 6c, the widening plates 6b, 6b are moved in a direction away from each other, and the opening W
1 is widened in a substantially flat one-letter shape.

The folding mechanism 7 opens and closes vertically while facing the opening W1 of the widened work W at right angles to the work W and opposing each other so as to oppose each other, and sandwiches the opening W1. , A pair of horizontal gripping members 7 that perform releasing operation
a, 7a, and extendable and retractable horizontal gripping cylinders 7b, 7b for moving the horizontal gripping members 7a, 7a toward and away from each other;
A pair of pulleys 7d on which a support frame 7c that supports the lateral gripping members 7a, 7a in a reversible manner and a timing belt 7e that inverts the horizontal gripping members 7a, 7a via the support frame 7c. _1, and 7d _2, is composed of a reversing cylinder 7f provided with the rack gear 7f ₁ for rotating the pulley 7d _2.

More specifically, as shown in detail in FIGS. 2 and 3, the horizontal gripping members 7a, 7a are formed in two upper and lower bands.
Consists lower plate 7a _1, 7a _2, the attachment with the base of the lower plate 7a ₂ is fixed to the side surface of the pulley 7d ₁ via the mounting member 7g the base of the upper plate 7a _1, and the axis on radially while pivoted swingably hinged 7g ₁ of wood 7g a fulcrum, erected the nail plate 7a ₃ directly upward to the base of the lower plate 7a ₂ from the lower plate 7a _2, the claw plate 7a ₃ and Kake設the tensile bullet machine 7h between the support plate 7z, the urging force of the elastic unit 7h normally is optionally polymerizing the lower plate 7a ₂ to the upper plate 7a _1, wherein the lateral gripping cylinder 7b, 7b of Support frame 7 by extension operation
c, the claw plate 7a ₃ is fixed to the machine frame 8 when the horizontal gripping members 7a, 7a move
It has been made to open the swing-like abutting the lower plate 7a ₂ against the biasing force of the tensile bullet machine 7h with the relative upper plate 7a ₁ to.

The pair of pulleys 7d ₁ and 7d ₂ are both rotatably supported by a support frame 7c, and the pulley 7d ₂ is mounted on a pinion 7f ₂ on a counter shaft 7k integrally connected via a coupling 7j. When the expansion and contraction operation of the reversing cylinder 7f is performed,
Rack gear 7f ₁ and meshing with the pinion 7f ₂ of the lateral gripping member 7a in rotation, have been made. 7a so as to repeat the rolling in a range of 180 degrees.

The machine casing 8 has flat side plates 8a, 8a occupying both side surfaces of the apparatus, and connecting plates 8c, 8 connecting the side plates.
c, a frame 9 is formed at the lower part of the machine frame 8 with a leg 9 formed of a mold rope or the like. Free casters 9
b to provide convenience for moving and securing the device.

Next, the operation of the embodiment constructed as described above will be described. In this embodiment, articles (in the embodiment, two pairs of socks are bound) are stored in the previous process, and the work W (in the embodiment, a transparent plastic bag) in which the storage opening is open is transferred to the work transfer means. 4, the workpiece W is transferred to the downstream side by the belt conveyor 4a, and at the end of transfer, naturally slides down based on the inclination angle of the conveyor 4a and the inertia of the transfer force based on the inclination angle, and further downstream. A work receiving plate 5a of the positioned work mounting portion 5,
While being received on 5a, the tip of the work W comes into contact with the stopper 5c, stops sliding, and is placed at a predetermined position.

In this case, since the work W is slid down by the inclination angle of the belt conveyor 4a and the receiving plate 5a, the work W can be reliably brought into contact with the stopper 5c, and the work W is moved to a predetermined position. It can be positioned accurately. When the work W is placed at a predetermined position on the work placement section 5, the swing air cylinder 3e extends and the first swing lever 3d moves together with the second swing lever 3a based on the swing trajectory Z. And swing downward.

In this case, prior to the swinging of the first swinging lever 3d, as shown in FIG. 4, the second swinging lever 3a swings its free end slightly upward by the extension operation of the cylinder 3k, and the tape is moved. An opening is provided between the gripping plate 3b. When the leading end of the tape T fed from the tape feeding unit 1 enters the opening, the operation of the cylinder 3k is released as shown in FIG.
The free end side swings again to the gripping plate 3b side by the action of the pulling elastic machine 3h, and the gripping plate 3b and the second swing lever 3
a and the tape T is gripped.

In conjunction with this, the tape cutting means 2 operates, and the cutter blade 2 is extended by the extension of the cutter cylinder 2b.
a descends and cuts the tape T gripped by a predetermined length. The tape T cut and gripped by the second swing lever 3a and the tape gripping plate 3b becomes the first swing lever 3d.
Is conveyed downward in an arc by the swing of.

During this time, the cylinder 6 of the widening mechanism 6 is synchronized
a is extended and the link mechanism 6 is inserted while the pair of widened plates 6b, 6b are being inserted into the opening W1 of the work W on which they are placed.
By the operation c, the width of the opening W1 is widened in a substantially flat one-letter shape. (Refer to FIGS. 10, 11, and 12.) When the opening W1 is widened, the folding mechanism 7 is operated, and the horizontal gripping cylinders 7b and 7b are contracted, and the horizontal gripping members 7a and 7a are open at the ends. There advanced to face shape toward the workpiece opening W1 which is widened in one shape, sandwiching the opening from above and below by two vertical plates 7a _1, 7a _2.
(FIGS. 12 and 13 see) the clamping operation, the advancement of the lower plate 7a ₂ have the nail plate 7a ₃ is performed in the biasing action of the tension bullets machine 7h by being released from the contact of the fixed plate 8a. Rack rack gear 7f ₁ when securely clamped from both sides widening plates 6b, 6b are retracted, inverted cylinder 7f is stretched operates like a (see FIG. 10) one shaped opening W1 in FIG. 13 with pivots clockwise pinion 7f ₂ in FIG. 1, this and shaft hearts on timing pulley 7d ₂
Are rotated in the same direction.

[0028] Thus, the timing pulley 7d ₁ interlocked through a timing belt 7e, lateral gripping member 7a is sandwiched openings W1, 7a is clockwise 1
The opening W1 is turned back to the upper surface of the work W by being inverted by 80 degrees. (See FIG. 14) At this time, the first swing lever 3d
The second swinging lever 3a, which is being lowered by the swinging, swings against the tension of the pulling elastic machine 3h by the extension operation of the cylinder 3j, and its free end side is slightly opened to release the tape against the tape gripping plate 3b. By releasing the pressing and holding of the T, the holding of the tape T depends only on the adhesive action to the tape holding plate 3b, and when the tape T is attached to the work W, the tape T is easily detached from the tape holding plate 3b. To (FIG. 6B
When the tape T conveyed in such a state reaches the portion to be sealed of the work W, as shown in FIG. 7, the remaining portion of the tape T gripped by the tape gripping plate 3b becomes the second swing lever 3a. The roller 3f is spotted on the upper surface of the folded portion formed in the opening W1 through the roller 3f, and the roller 3f follows the bulging shape of the folded portion by the further circular motion of the first swing lever 3d as shown in FIG. And presses on the tape T by the action of the pulling machine 3h.
a is retracted in the direction opposite to the swinging direction of the first swinging lever 3d with the movement of the roller 3f along the shape of the folded portion, while following the swinging of the first swinging lever 3d, and opening the workpiece. A tape T is sequentially adhered to the folded-back portion.

When the tape gripped by the gripping plate 3b is adhered to the end, the tape T is forcibly peeled off from the gripping plate 3b by being pulled by the swing of the first swing lever 3d as shown in FIG. Then, the work 3 is stuck on the upper surface of the work W by pressing the roller 3f, and the opening of the work is securely sealed with the adhesive tape T.
In this case, the tape T can be naturally adhered to the second swinging lever 3a by the retreating operation along the shape of the work W under the condition that the tape T is artificially operated with a fingertip.

When the sealing of the work opening W1 is completed, the horizontal gripping members 7a, 7a are retracted and the swinging cylinder 3
e, the first swinging lever 3d swings in the ascending direction to return to the original position, and the work receiving plates 5a, 5a of the work mounting unit 5 are moved to the positions of the receiving plate cylinders 5b, 5b. Forming a hole-shaped space area separated from the other by the reduction operation,
The work W is naturally dropped from this space area and collected below.

After the work W is dropped, the cylinders 5b and 5b are extended, and the work receiving plates 5a and 5a approach each other in an opposing manner, so that the work mounting portion 5 is formed again to mount the next work. stand by. The opening W1 of the workpiece W continuously supplied by repeating such a process can be automatically and reliably sealed in a regular state without wrinkles or slack.

In the embodiment, the work receiving portion 5 is constituted by the work receiving plates 5a and 5a which open and close to face each other. However, as another example, the work W is constituted by a belt conveyor (not shown) and the sealed work W is formed. It may be directly transferred to the next step.

[0033]

As described above, according to the present invention, the member holding the adhesive tape with respect to the work is moved along the shape of the work opening by circular motion, and the tape is adhered to the work opening and sealed. With this configuration, the device can be made into an overlying structure to reduce the occupied area and reduce the size, and it is possible to attach the tape very naturally under the condition that the tape is artificially attached with the fingertip. It is possible to seal the work in an orderly state without wrinkles or looseness without being affected by the degree of swelling of the work according to the shape of the article stored in the work. It has the effect of being able to be in a high state.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment.

FIG. 2 is a detailed view showing a main part.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a side view showing the operation.

FIG. 5 is a side view showing the operation.

FIG. 6 is a side view showing the operation.

FIG. 7 is a side view showing the operation.

FIG. 8 is a side view showing the operation.

FIG. 9 is a side view showing the operation.

FIG. 10 is a perspective view illustrating an operation.

FIG. 11 is a perspective view illustrating an operation.

FIG. 12 is a perspective view illustrating an operation.

FIG. 13 is a perspective view illustrating an operation.

FIG. 14 is a perspective view illustrating an operation.

FIG. 15 is a side view showing a conventional example.

[Explanation of symbols]

 T Adhesive tape W1 Work opening W Work 3d First swing lever 3a Second swing lever 6 Widening mechanism 7 Folding mechanism

Claims (3)

(57) [Claims] An adhesive tape is gripped by a gripping member, and while the gripping member gripping the tape is moved in an arc, the tape is adhered while pressing the tape along the shape of a work opening on one of the gripping members. A method for sealing a work opening. 2. An apparatus for sealing an opening by adhering a tape to an opening of a work in which an article is stored, wherein a free end is provided between a work placement position and a tape supply position. A first swinging lever that swings in an arc shape, and a second swinging lever that is supported on the free end side of the first swinging lever and swings, and the second swinging lever has a tape gripping portion. The gripping portion grips and swings the tape from the tape supply position with the swing of the first swing lever, while swinging of the first swing lever at the work mounting position, 2
A work opening sealing device, wherein a tape gripped by a retreating movement of a swing lever is adhered along a shape of a work opening sealing portion of a work. 3. A widening mechanism for widening an opening of a work;
3. The work opening sealing device according to claim 2, further comprising a folding mechanism that folds the widened opening.