JP3067592U - Automatic shrink packaging equipment - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] Especially suitable for shrink wrapping of books, compact and lightweight, easy to operate, inexpensive, excellent in functionality, and related to the size, weight, etc. of the envelope. The present invention provides an automatic shrink wrapping apparatus capable of continuous and random mass processing without any need. SOLUTION: A plurality of pairs of width-regulating frames which can freely move in and out are provided at symmetrical positions on both sides of a slide plate 4, and a support lever 11 which supports a back surface of the bucket at a right angle is provided below a bucket 10 with a lower end serving as a pivot. Movably provided, and further, the entire apparatus is provided with a slide plate from an insertion port, and film supply rollers 13a and 13b.
And a film encapsulating mechanism configured by the film welding and fusing unit 12 and a transport heating mechanism configured by the bucket and the transport conveyor 15 and the shrink tunnel 18.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a packaging device for fixing and holding articles by a shrinkable film that shrinks by heating, and is particularly suitable for packaging books at a retail bookstore. Possible devices.

[0002]

[Prior art]

 The automatic shrink wrapping device automatically performs a work process such as covering one or a plurality of objects with a shrink film, heating and shrinking them through a heating furnace, and fixing and holding the objects to be conveyed. The main components are a shrink film supply mechanism, an encapsulation mechanism, a seal cutting mechanism, a heating mechanism, and a transport mechanism for the object to be encapsulated. In addition, many conventional automatic shrink wrapping machines are intended for food, miscellaneous goods, pharmaceuticals, and the like, and the packaging work of this kind of product is mainly performed by a manufacturer or a wholesaler in a distribution process. Many are intended to be performed at once. For this reason, in order to pursue processing speed and processing capacity, this type of apparatus necessarily has a large and complicated mechanism, and is difficult to operate and extremely expensive.

For example, Japanese Utility Model Application No. 01-70249 (Japanese Utility Model Application Laid-Open No. 03-11603), Japanese Patent Application No. 62-171578 (Japanese Unexamined Patent Application Publication No. 64-23924), Japanese Utility Model Application No. 52-31290 (Japanese Utility Model Application Laid-open No. Sho 53-126869), Japanese Patent Application No. 50-71796 (Japanese Patent Application Laid-Open No. 51-148594), Japanese Patent Application No. 45-64221 (Japanese Patent Application No. 49-14906), and Japanese Patent Application No. 05-35339 (Japanese Patent Application Laid-Open No. 07-205925).

[0004] In particular, shrink wrapping of books and the like, in order to prevent browsing, appendage scattering, contamination and breakage, etc., at individual retail stores, each time it is unique and unfamiliar with machine operation in a limited space. Due to special circumstances, such as the need to be performed by bookstore staff, it is practically impossible to use or apply packaging equipment for other products consisting of such a large and complicated mechanism, and it is also cost-effective. I couldn't do that.

[0005] In view of the above circumstances, a conventional shrink packaging apparatus for books employs a method in which shrink film bags are separately prepared in advance, books are stored one by one, and then heated and shrunk. As a result, a device having a simplified configuration of the entire apparatus by omitting a film supply mechanism, a film encapsulation mechanism, and a film sealing mechanism is provided and used. However, in such a conventional apparatus, it is necessary to prepare many types of shrink film bags corresponding to the thickness, size, or shape of the books to be wrapped. It requires cumbersome manual work of storing books one by one while opening and checking the top and bottom, further increasing the size of bookstores, the recent situation of comic magazines and photo book booms, or opening new stores It was not possible to meet the demand for rapid and mass processing due to the circumstances at the time.

As a shrink wrapping device for books for mass processing, there is an automatic shrink wrapping device (Japanese Utility Model Application No. 08-9100 / Registered No. 3034460) according to the present applicant's application. It is a further improvement of, which enables continuous random shrink wrapping regardless of the size and weight of books.

[0007]

[Problems to be solved by the invention]

 The present invention has been made in view of the above-described problems of the conventional apparatus, and omits the manual operation of opening and storing a film bag and automates the operation by simply inserting books as an envelope from an insertion slot. Shrink wrapping can be done automatically, and it can be mass-processed while being small and light so that it does not feel uncomfortable even when installed at the sales floor.It has excellent operability and functionality, and it can be purchased at each retail bookstore. It is another object of the present invention to provide an automatic shrink wrapping apparatus that can be wrapped continuously and randomly regardless of the thickness, size, shape, weight, etc. of books, etc.

[0008]

[Means for Solving the Problems]

 A book, which is an object to be wrapped, is inserted from the insertion slot onto a slide plate which is erected, and the front and back sides of the object are covered with a shrink film that is fed out as the object slides down, and the object passes through the object. Immediately after the shrink film, which is superimposed along the trailing edge and slightly behind the package, is heat-sealed by the fusing section built into the sensor and cut at the same time, and it is cut by a tiltable bucket and placed on the conveyor below the slide plate. The transport conveyor conveys the objects through the shrink tunnel to the discharge port and shrink-wraps them. Plural pairs are provided so that they can be moved in and out except for the outer frame, and buckets are provided to move the object from the slide plate to the conveyor. Of rotatably providing a support lever for supporting the bucket back surface at right angles to the lower part of the lower end portion as a supporting shaft. And, a film wrapping machine structure for the wrapped object constituted by the slide plate from the insertion port, the film supply roller and the film fusing and fusing section, and a transport heating mechanism configured by the bucket, the transport conveyor and the shrink tunnel. Are separately disposed in the upper and lower separable casings, respectively, so that the entire apparatus can be divided.

[0009]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0010]

【Example】

 The drawings show an embodiment of the shrink wrapping device according to the present invention, FIG. 1 is an explanatory view of a side mechanism showing an overall outline of the device, FIG. 2 is a schematic diagram of a slide plate portion of the device, and FIG. FIG. 4 is a view illustrating a series of operations of the width regulating frame in the slide plate portion of the apparatus, and FIG. 4 is a view illustrating a series of operations of the apparatus, wherein A denotes a book as an envelope, and B1 and B2 denote shrink films.

The entire casing is composed of an upper casing 1a and a lower casing 1b which can be vertically separated. In the upper casing 1a, the casing is appropriately inclined forward from almost immediately below the insertion opening 2 to form a substantially intermediate portion. A slide plate 4 having a horizontally long hole 8 for inserting a shrink film is provided. A plurality of pairs of width regulating frames 5a and 5b, 6a and 6b, and 7a and 7b are provided in parallel on the slide plate 4 at target positions along both left and right sides thereof. The outermost frames of these width restricting frames have a pair of width restricting frames 7a and 7b fixed to the slide plate 4, and the other intermediate width restricting frames 5a and 5b and 6a and 6b are always in the upward direction. The spring pressure is applied to the slide plate 4 so that the slide plate 4 can be made to protrude and retract from a vertically long hole 9 formed in the slide plate 4. Further, the width regulating frames 5a, 5b, 6a, 6b, which can be retracted, are formed so as to taper in the direction of the insertion opening 2 so as not to generate an acute step with the surface of the slide plate 4.

Numeral 10 is a bucket for temporarily holding and placing the object A which has slid down, which is located at the tip of the slide plate 4 so as to form a continuous parallel surface at the same inclination angle as this, and One side adjacent to the slide plate 4 is disposed so as to be tiltable downward with the other side as a support shaft. Reference numeral 11 denotes a support lever which is disposed at a lower position of the bucket 10 and whose normal end normally comes into contact with the back surface of the bucket 10 at right angles. ing. In normal times when the object A is not placed on the bucket 10, the slide surface of the slide plate 4 and the placement surface of the bucket 10 are the same due to the support force of the support lever 11 abutting at right angles. When the object to be wrapped A is dropped and placed on the bucket 10 continuously at an inclination angle, the support lever 11 pivots about the lower end in the opposite direction to the slide plate 4 to release the support, and the bucket is released. One side adjacent to the slide plate 4 tilts downward, and when the object A is removed from the bucket 10, the support lever 11 is rotated by the driving force to return to the normal state. It is configured.

Slightly above the middle of the slide plate 4, a welding and fusing portion 12 having a sensor function for detecting an object A passing over the slide plate 4 and a seal and cutter head is disposed. When the passage of the envelope A is sensed, the head slides at a right angle in the direction of the slide plate 4 and the upper and lower shrink films B1 and B2 that are superposed by the pinching action and the heating action with the slide plate 4 are attached to the envelope A. It is cut at the same time when it is welded slightly behind the rear edge of the frame.

B1 and B2 are transparent and roll-shaped shrink films wound around film supply rollers 13a and 13b, respectively, disposed at the illustrated positions, and one shrink film B1 is passed through an upper guide roller 14a. The other shrink film B2 is fed out into the gap between the welding and fusing portion 12 and the slide plate 4, and the other shrink film B2 is inserted into the horizontally long hole 8 formed in the slide plate 4 via the lower guide roller 14b to form the same welding and fusing portion. The shrink film B1 and the shrink film B2 are fed out into the gap between the slide plate 12 and the slide plate 4, and the shrink film B1 and the shrink film B2 are superposed. At the time of the initial operation of the apparatus, the welding and fusing section 12 is forcibly activated in advance to weld the superposed shrink film B1 and the shrink film B2, and at the same time, to cut the two shrink films B1 and B2. Keep it continuous.

In the lower casing 1b, a fire-resistant and heat-resistant sheet having excellent heat conductivity is made from directly below the bucket 10 to the discharge port 3, and is wound endlessly by pulleys 16a and 16b. The transport conveyor 15 is stretched horizontally, and a shrink tunnel 18 having heaters 17a and 17b above and below is provided around the transport conveyor 15.

Next, the operation of the device of the present invention will be described with reference to FIGS. 3A to 3F. First, the shrink films B1 and B2 that have been fed out in advance in a predetermined direction and are welded and fused are forcibly operated. To form a continuous shrink film (FIG. 4 (a)). Thereafter, an object A, such as a book, is inserted through the insertion slot 2 (FIG. 4B), and the inserted object A is determined by a pair of width regulating frames appropriately determined and selected according to the width of the object. While falling, the slide plate 4 slides down in the direction of the continuous shrink films B1 and B2 at a speed determined by the inclination angle of the slide plate 4 and its own weight.

When the front edge (the back of the book in the present embodiment) of the object A that slides down falls on the continuous shrink films B 1 and B 2 and further falls on the slide plate 4, The shrink films B1 and B2 are fed out from both by the dropping force of the package A and the rotational driving force previously given to the film supply rollers 13a and 13b, and cover the front and back surfaces of the package A from the front edge (FIG. 4). (C)). Further, in this state, when the object A continues to slide and the rear edge of the object A passes through the welding and fusing portion 12, the head of the welding and fusing portion 12 slides in the direction of the slide plate 4, and the rear edge of the object A Shrink films B1 and B2 are polymerized and welded slightly behind, and are cut at the same time to encapsulate the object A in a cylindrical shape (FIG. 4 (d)). At this time, the unused portions of the shrink films B1 and B2 are still continuous due to heat welding at the time of cutting, and are ready for the next encapsulation.

Subsequently, when the object A in a state of being wrapped in a tubular shape by the shrink film further falls and is completely placed and stored on the bucket 10, the bucket 10 is supported at a right angle until then. The support lever 11 is rotated to release the support, whereby the one side of the bucket 10 adjacent to the slide plate 4 is tilted toward the conveyor 15 (FIG. 4E). By this operation, the object A is transferred onto the conveyor.

The object A after being transferred onto the transport conveyor 15 passes through the shrink tunnel 18 and shrinks the cylindrical shrink film covering it by the heating action of the heaters 17a and 17b. As a result, the object A is fixed and held by the shrink film and is discharged from the discharge port 3 (FIG. 4F).

[0020]

[Effect of the invention]

 In the device of the present invention, since the wrapped object is wrapped in a cylindrical shape by a roll-shaped shrink film and then heated and shrunk, one type of roll width is used regardless of the size and shape of the wrapped object. Many types of shrink film can be used, and it is not necessary to prepare many types of shrink film bags or various types of shrink films as in the conventional case.

In addition, since the slide plate inclined forward from the insertion slot is provided, the film is fed out by utilizing the sliding falling force of the object, the film is enveloped, and the envelope is transferred to the conveyor. Therefore, it is possible to simplify the overall configuration of the device while enabling large-scale processing by omitting the parts that have been manually performed in the past, and if only a reduction in size and weight and cost can be achieved. It has excellent operability, functionality and safety.

Further, in the device of the present invention, by providing a plurality of pairs of width-regulating frames which can be retracted and retracted on the slide plate, only the width-regulated frames larger than the width of the object to be projected protrude from the slide plate. Since the width control frame is submerged from the slide plate by its own weight, the width control frame can be adjusted automatically and accurately, and the width of the width control frame can be adjusted according to the size of the object as in the conventional device. It is not necessary to change the setting each time, and it is possible to process various kinds of wrapped objects at random.

In addition, since the bucket is normally supported at right angles by the support lever, the bucket or the support lever can be reliably placed on the bucket regardless of the weight of the object, even if no special force is applied to the bucket. The bucket tilts before the package is completely stored on the bucket, unless a considerable driving force is applied to the bucket itself as in the conventional device. As a result, there is no inconvenience, such as the object being caught between the slide plate and the bucket or between the bucket and the conveyor, and the object cannot be smoothly transferred to the conveyor, and the drive added to the support lever The force required is small enough to return the bucket in the empty state.

Further, in the present invention, since the entire apparatus can be divided by upper and lower casings which can be separated, not only is transport and installation easy, but also in the case of failure, the upper and lower parts need to be repaired or replaced. Only any part needs to be replaced or transferred to a repair shop, which is extremely convenient for maintenance.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a side mechanism showing an overall outline of a device according to an embodiment of the present invention.

FIG. 2 is a schematic structural view of a slide plate portion of the device according to the embodiment of the present invention;

FIG. 3 is an operation explanatory view of a width regulating frame in the slide plate portion of the embodiment of the present invention;

FIG. 4 is a view illustrating a series of operations of the device according to the embodiment of the present invention;

[Explanation of symbols]

 A: Envelope B1, B2: Shrink film 1a: Upper casing 1b: Lower casing 2: Insertion port 3: Discharge port 4: Slide plate 5a, 5b, 6a , 6b, 7a, 7b ... width control frame 8 ... horizontally long hole 9 ... vertically long hole 10 ... bucket 11 ... support lever 12 ... film welding and fusing portion 13a, 13b ... film Supply roller 14a, 14b Film guide roller 15 Conveyor 16a, 16b Pulley 17a, 17b Heater 18 Shrink tunnel

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[Procedure amendment]

[Submission date] October 19, 1999 (1999.10.
19)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 2

FIG. 3

FIG.

FIG. 4

Claims (3)

[Utility model registration claims] 1. A slide plate having a horizontally long hole for inserting a film and a width regulating frame is erected and sloping forward from immediately below an insertion opening,
A pair of film supply rollers above and below the slide plate,
By detecting the passage of the object above the slide plate, the film welding and fusing portion whose head slides in the slide plate direction is supported, and one side adjacent to the slide plate supports the other side in front of the slide plate. A bucket that can be tilted as an axis and normally forms a continuous slide plate and a continuous plane are respectively arranged at appropriate positions, and the conveyor is stretched horizontally from a position below the bucket through the shrink tunnel to the discharge port. An automatic shrink wrapping apparatus comprising: a plurality of pairs of width regulating frames attached to the slide plate, wherein at least a width regulation frame located at an intermediate portion has a front end between the pair of width regulation frames and the slide plate surface. In addition to having a shape such that no sharp step is generated, a vertically long hole corresponding to the width regulating frame is formed in the slide plate, and a spring pressure is constantly applied in an upward direction. An automatic shrink wrapping device characterized in that it can come and go from the slide plate surface. 2. A device according to claim 1, wherein an upper end portion of the bucket is normally in contact with the back surface of the bucket at right angles, and a support lever is provided which pivots around the lower end portion of the bucket when the object is placed on the bucket. The automatic shrink packaging apparatus according to claim 1, wherein 3. The whole casing is formed so as to be vertically separable by an upper casing having an insertion port and a lower casing having a discharge port, and the slide plate, the film supply roller, the welding fusing section are provided in the upper casing. Wherein the bucket, the shrink tunnel, and the conveyor are disposed in the lower casing so that the entire apparatus can be divided into upper and lower parts. Automatic shrink wrapping device as described.