JP4937084B2 - Adhesive film insertion mechanism - Google Patents

Description

  The present invention is an adhesive film insertion mechanism in an apparatus for manufacturing a close contact letter by sandwiching a predetermined adhesive film between folded pieces of folded paper and bonding the folded pieces together via an adhesive film. It is related.

  An apparatus for producing a close contact letter using an adhesive film having an adhesive layer on the front and back surfaces of the base material layer and separated into two layers by the base material layer is, for example, Patent Document 1, 2. The apparatus of Patent Document 1 folds continuous paper, continuously inserts an adhesive film into the space between the folds, and bonds the folds to each other via the adhesive film to produce a close letter. . The apparatus of Patent Document 2 folds while transporting a sheet, inserts an adhesive film continuously into the space between the folds, and bonds the folds to each other via the adhesive film to produce a close letter is doing.

  In the past, generally, as in the apparatus of Patent Document 1, a contact letter is manufactured using continuous paper. However, gradually, the production of contact letters using sheets as in the apparatus of Patent Document 2 has increased.

On the other hand, as for the adhesive film insertion mechanism of the contact letter manufacturing apparatus, as disclosed in Patent Document 3, an adhesive film insertion mechanism is proposed in which the adhesive film does not cause a positional shift.
Japanese Patent Laid-Open No. 5-38894 Japanese Patent Laid-Open No. 9-76665 JP 2006-130913 A

  By the way, in the adhesive film insertion mechanism, the lower folded piece of the paper folded in two (lateral V-type) or three (Z-type) is sucked by the lower suction device, and the upper side of the paper is The space between the folded pieces for inserting the adhesive film was secured by sucking the folded pieces with the upper suction device. However, in some cases, the folded piece on the upper side of the folded paper cannot be sufficiently sucked, and a sufficient space for inserting the adhesive film cannot be secured.

  Then, an object of this invention is to provide the adhesive film insertion mechanism which can ensure the space for inserting an adhesive film reliably.

  1st invention of this application has the adhesive film which has an adhesive layer on the front and back of a base material layer between the folded pieces of the folded paper, and can be isolate | separated in a base material layer and can peel in two layers. In the adhesive film inserting mechanism of the contact letter manufacturing apparatus to be inserted, an upper suction conveying means for conveying the paper in a state where the upper folded piece of the folded paper is sucked to the conveying surface, and a lower side of the folded paper And a lower suction conveyance means for conveying the paper in a state where the folded piece is sucked to the conveyance surface, and a part of the conveyance surface of the lower suction conveyance means is raised in the middle of the conveyance direction. The raised portion is formed on the upstream side in the transport direction from the position where the adhesive film is inserted.

The present invention preferably further comprises the following configuration.
(1) A conveyance surface is comprised with the conveyance belt, and the said protruding part is formed of the thick member provided directly under the conveyance belt.
(2) In said structure (1), the process for reducing the friction coefficient with respect to a conveyance belt is given to the contact surface of the thick member with respect to a conveyance belt.
(3) In the configuration (2), a coating layer is formed as the processing on the contact surface of the thick member.
(4) In the configuration (1), the thick member is a rotating roller.
(5) The lower suction conveyance means includes a conveyance belt that constitutes a conveyance surface, and a suction box that exerts a downward suction force under the conveyance belt, and the raised portion is formed on the upper surface of the suction box. It is formed by raising a part.

  A second invention of the present application is a contact letter manufacturing apparatus having the adhesive film insertion mechanism of the first invention.

  In the first invention of the present application, the folded sheet is slightly upward when it comes to the raised portion of the conveying surface of the lower suction conveying means. For this reason, the upper folded piece approaches the upper suction conveyance unit and is easily sucked by the upper suction conveyance unit. Therefore, according to the first invention, the lower folded piece of the folded sheet can be sucked by the lower suction conveying means, and the upper folded piece can be surely sucked by the upper suction conveying means, so that the adhesive film is inserted. It is possible to ensure a space for doing so. And since the protruding part is formed in the conveyance direction upstream rather than the position which inserts an adhesive film, an adhesive film can be inserted reliably.

  According to the said structure (1), the protruding part of a conveyance surface can be provided easily and reliably.

  By providing the raised portion on the conveying surface, it is expected that the frictional force with the conveying belt is increased. However, according to the configuration (2), the conveying belt smoothly slides on the thick member. Transport by the transport belt can be performed without any trouble.

  According to the configuration (3), the configuration (2) can be easily and reliably realized.

  According to said structure (4), the effect similar to said structure (2) can be exhibited with a simple structure.

  According to the said structure (5), the protruding part of a conveyance surface can be structurally provided from the beginning.

  According to the second invention of the present application, since the adhesive film can be surely inserted into the folded paper, the contact letter can be efficiently manufactured without causing work stoppage due to poor insertion.

[First Embodiment]
FIG. 1 is a schematic plan view of a contact letter manufacturing apparatus having an adhesive film insertion mechanism according to a first embodiment of the present invention. The apparatus 1 includes a paper feeding means 2, a first conveying means 3, a folding means 4, a second conveying means 5, an adhesive film insertion mechanism 6, a cutting means 7, an adhesive means 8, and a paper discharging means. 10 in this order. FIG. 2 is a side view of the adhesive film insertion mechanism 6. 3 is an enlarged partial view of FIG. 2, and FIG. 4 is a top view of FIG. In FIG. 4, the conveyance belt 622 of the upper conveyance unit 62 is not shown. FIG. 5 is a view taken in the direction of arrow V in FIG.

  The adhesive film insertion mechanism 6 includes a lower suction conveyance unit 67 including a lower conveyance unit 61 and a lower suction unit 63, an upper suction conveyance unit 68 including an upper conveyance unit 62 and an upper suction unit 64, and an adhesive film. And an insertion portion 65.

  The lower transport unit 61 is configured by four endless transport belts 612 laid around four transport rollers 611. The lower conveyance unit 61 conveys the paper 11 placed on the conveyance belt 612 in the arrow X direction by rotating the conveyance roller 611 and moving the conveyance belt 612 in the arrow X direction. A number of through holes 6121 (FIG. 4) are formed in the transport belt 612. On the other hand, the suction port of the lower suction part 63 is disposed upward in a space surrounded by the conveyor belt 612. The lower suction part 63 is composed of a suction fan, for example, and sucks air from the suction port in the direction of the arrow Y1. Accordingly, when the lower suction unit 63 is operated, the lower transport unit 61 transports the paper 11 in the direction of the arrow X in a state where the paper 11 is attracted to the surface of the transport belt 612 by the air sucked through the through hole. The upper surface of the conveyance belt 612 constitutes a conveyance surface 613.

  The upper conveyance unit 62 is configured by an endless conveyance belt 622 being stretched around two conveyance rollers 621. A number of through holes (not shown) are formed in the transport belt 622. On the other hand, the suction port of the upper suction part 64 is disposed downward in a space surrounded by the conveyance belt 622. The upper suction part 64 is composed of a suction fan, for example, and sucks air in the direction of the arrow Y2. Therefore, when the upper suction unit 64 is operated, the upper transport unit 62 transports the paper 11 in the arrow X direction in a state where the paper 11 is attracted to the lower surface of the transport belt 622 by the air sucked through the through hole. The lower surface of the conveyance belt 622 constitutes a conveyance surface 623.

  The adhesive film insertion unit 65 wraps the adhesive film 9 from the adhesive film supply unit 651 around the outer guide 652 and then around the inner guide 653, whereby the lower fold 111 of the sheet 11 shown in FIG. The adhesive film 9 is inserted into the space 110 between the upper fold piece 112 and the upper fold piece 112. The inserted adhesive film 9 is conveyed along with the paper 11. The outer guide 652 and the inner guide 653 are disposed at a predetermined angle such as about 60 degrees with respect to the transport direction of the paper 11. The outer guide 652 is arranged so that the leading end is positioned outside the side edge of the paper 11 to be conveyed, and the inner guide 653 is inserted into the space 110 so that the opposite side edge is inserted. It is arranged to be located beyond.

  And in this invention, a part of conveyance surface 613 of the lower conveyance part 61 has protruded in the middle of the conveyance direction. Further, the raised portion 6131 is formed on the upstream side in the transport direction from the position 614 where the adhesive film is inserted.

  The raised portion 6131 is formed by a thick member 615 provided immediately below the conveyor belt 612. The thick member 615 is a plate material, for example, and is provided extending in the width direction of the transport belt 612.

  Further, the contact surface 6151 of the thick member 615 with respect to the transport belt 612 is processed to reduce the friction coefficient with respect to the transport belt 612. Specifically, a coating layer is formed on the contact surface 6151 of the thick member 615 as the processing.

  By the way, the adhesive film 9 has a structure as shown in FIG. That is, as shown in (a), the adhesive film 9 has adhesive layers 92 and 93 on the front and back surfaces of the base layer 91 composed of two layers. Then, as shown in (b), the adhesive film 9 is separated by the base material layer 91, 9A composed of the base material layer 911 and the adhesive layer 92, the base material layer 912 and the adhesive layer 93. It can be peeled into two layers 9B consisting of

  Next, the operation of the contact letter manufacturing apparatus 1 having the adhesive film insertion mechanism 6 having the above-described configuration will be described.

  When the operation of the apparatus 1 is started, first, the uppermost sheet 11 of the sheets stacked on the loading unit 21 of the sheet feeding unit 2 is conveyed to the first conveying unit 3 one by one by the feeder unit 22. .

  In the first transport unit 3, the paper 11 is transported to the folding unit 4 while being aligned along the guide.

  In the folding means 4, the paper 11 is folded into a lateral V shape by the folding mechanism section 41 as shown in FIG. 7, and then conveyed to the second conveying means 5 while being pressed from above by the pressure conveying section 42. The Therefore, in the paper conveyed to the second conveying means 5, the space 110 between the lower folded piece 111 and the upper folded piece 112 is closed.

  In the second transport means 5, the paper 11 is transported to the adhesive film insertion mechanism 6 while being aligned along the guide.

  In the adhesive film insertion mechanism 6, the lower suction conveyance means 67 and the upper suction conveyance means 68 operate simultaneously. That is, the lower transport unit 61 and the upper transport unit 62 operate simultaneously, and the lower suction unit 63 and the upper suction unit 64 operate simultaneously.

  The folded sheet 11 is first transported on the transport surface 613 of the lower transport section 61 by the lower folded piece 111 being sucked by the lower suction section 63. Then, the paper 11 is transported slightly upward by the raised portion 6131 of the transport surface 613 of the lower transport unit 61. For this reason, the upper folded piece 112 approaches the conveyance surface 623 of the upper conveyance unit 62. As a result, the upper folded piece 112 is reliably sucked by the upper suction portion 64. Therefore, since the lower folded piece 111 is sucked by the lower suction part 63 and the upper folded piece 112 is sucked by the upper suction part 64, the sheet 11 is pulled up and down, A space 110 is secured between the upper folded piece 112.

  Then, the paper 11 in which the space 110 is secured is conveyed and reaches a position 614 where the adhesive film 9 is inserted, and the adhesive film 9 is inserted into the space 110 of the paper 11. That is, the film insertion part 65 operates and the adhesive film 9 is inserted into the space 110. FIG. 8 is a cross-sectional view of the paper 11 immediately after the adhesive film 9 is inserted into the space 110. The paper 11 with the adhesive film 9 inserted into the space 110 is conveyed to the cutting means 7.

  In the cutting means 7, the paper 11 is stopped at a predetermined position while being pressed by the pressing roller. In this state, the paper 11 is cut into a predetermined size together with the adhesive film 9 by operating the cutter. The cut paper 11 is conveyed to the bonding means 8 by the operation of the pressing roller.

  In the bonding means 8, the paper 11 is heated in a pressed state. As a result, the adhesive layers 92 and 93 (FIG. 8) of the adhesive film 9 inserted into the space 110 are melted, and as shown in FIG. 9, the lower folded piece 111 and the upper folded piece 112 Is glued. As a result, the contact letter 100 is obtained in which the folded pieces 111 and 112 of the sheet 11 folded in the lateral V shape are bonded to each other via the adhesive film 9. The close contact letter 100 is sent out from the bonding means 8 and collected by the paper discharge means 10.

  9 is separated by a base material layer 91 as shown in FIG. 6B. That is, the base material layer 912 is attached to the inner surface of the lower fold piece 111 via the adhesive layer 93, and the base material layer is provided to the lower surface of the upper fold piece 112 via the adhesive layer 92. 911 is attached.

  According to the adhesive film insertion mechanism 6 of the contact letter manufacturing apparatus 1 having the above-described configuration, the following effects can be exhibited.

(1) Since the sheet 11 is transported slightly upward by the raised portion 6131 of the transport surface 613 of the lower transport unit 61, the upper folded piece 112 approaches the upper transport unit 62, and the upper suction unit 64 It becomes easy to be sucked. Therefore, in the present embodiment, the lower folding piece 111 can be sucked by the lower suction portion 63 and the upper folding piece 112 can be reliably sucked by the upper suction portion 64. A space 110 for inserting the adhesive film 9 can be reliably secured between the folded piece 112. Moreover, the sheet 11 that has passed the raised portion 6131 is conveyed while the lower folded piece 111 is sucked by the lower suction portion 63 and the upper folded piece 112 is sucked by the upper suction portion 64. The space 110 between the lower fold piece 111 and the upper fold piece 112 gradually expands. Therefore, also from this point, the space 110 for inserting the adhesive film 9 can be surely secured. Further, since the raised portion 6131 is formed on the upstream side in the transport direction from the position 614 where the adhesive film 9 is inserted, the space 110 is secured before the adhesive film 9 is inserted. Therefore, the adhesive film 9 can be reliably inserted into the space 110.

(2) The raised portion 6131 is formed by a thick member 615 provided immediately below the conveyor belt 612. Therefore, the raised portion 6131 can be easily and reliably formed.

(3) Since the coating layer for reducing the friction coefficient with respect to the conveyor belt 612 is formed on the contact surface 6151 of the thick member 615 with respect to the conveyor belt 612, the conveyor belt 612 is smooth against the thick member 615. It can slide on. Therefore, the paper 11 can be transported by the transport belt 612 without any trouble.

  Further, according to the contact letter manufacturing apparatus 1 having the adhesive film insertion mechanism 6 having the above-described configuration, the adhesive film 9 can be reliably inserted into the space 110 of the folded paper 11, so that the operation stop due to poor insertion can be prevented. Efficiently produce contact letters.

[Second Embodiment]
FIG. 10 is a side view of an essential part of the contact letter manufacturing apparatus 1 having the adhesive film insertion mechanism 6 of the present embodiment. In the present embodiment, the paper 11 is folded into a Z shape as shown in FIG. The sheet 11 folded in the Z shape includes a space 1101 between the lower fold piece 111 and the center fold piece 113 and a space 1102 between the center fold piece 113 and the upper fold piece 112. Therefore, the adhesive film insertion mechanism 6 of this embodiment includes a lower adhesive film insertion portion 66 for inserting the adhesive film 9 into the space 1101 and an upper side for inserting the adhesive film 9 into the space 1102. And an adhesive film insertion portion 69. That is, in the present embodiment, since the paper 11 has the two spaces 1101 and 1102, the paper 11 has the two adhesive film insertion portions 66 and 69. This point is different from the first embodiment, and other configurations are the same as those of the first embodiment.

  The configuration of the adhesive film insertion portions 66 and 69 is the same as that of the adhesive film insertion portion 65 of the first embodiment. Specifically, the adhesive film insertion unit 66 winds the adhesive film 9 from the adhesive film supply unit 661 around the outer guide 662 and then around the inner guide 663, whereby the adhesive film 9 is placed in the space 1101 of the paper 11. Is supposed to be inserted. The adhesive film insertion unit 69 inserts the adhesive film 9 into the space 1102 of the paper 11 by winding the adhesive film 9 from the adhesive film supply unit 691 around the outer guide 692 and then around the inner guide 693. It is like that.

  Also in the present embodiment, the sheet 11 is transported slightly upward by the raised portion 6131 of the transport surface 613 of the lower transport unit 61, so that the upper folded piece 112 approaches the upper transport unit 62, and the upper suction is performed. The part 64 is reliably sucked. Therefore, since the lower folded piece 111 is sucked by the lower suction part 63 and the upper folded piece 112 is sucked by the upper suction part 64, the sheet 11 is pulled up and down, A space 1101 is secured between the central folded piece 113 and a space 1102 is secured between the central folded piece 113 and the upper folded piece 112. The paper 11 in which the two spaces 1101 and 1102 are secured is transported to reach positions 6141 and 6142 where the adhesive film 9 is inserted, and the two spaces 1101 and 1102 are inserted into the two spaces 1101 and 1102 by the adhesive film insertion portions 66 and 69. The adhesive film 9 is inserted.

  As described above, according to this embodiment, even when the paper 11 is folded into the Z shape, the adhesive film 9 can be reliably inserted into the two spaces 1101 and 1102.

  Note that, even when the folded form of the paper 11 is not a Z-shape but a horizontal W-shape, the three spaces for inserting the adhesive film 9 by pulling the paper 11 up and down in the same manner as this embodiment. Can be ensured.

[Another embodiment]
(1) As the thick member 615, a rotating roller may be used as shown in FIG. According to this, the friction coefficient of the contact surface 6151 of the thick member 615 with respect to the conveyance belt 612 can be reduced easily and reliably.

(2) Instead of providing the thick member 615 directly below the conveyor belt 612, the configuration shown in FIG. In FIG. 13, the suction box 60 including the lower suction part 63 is provided in the space surrounded by the conveyor belt 612, and a part of the upper surface 601 of the suction box 60 is raised. A raised portion 6131 of the conveyor belt 612 is formed. According to this, the raised part 6131 of the conveyance surface 613 of the conveyance belt 612 can be structurally provided from the beginning.

  The adhesive film insertion mechanism of the present invention has a great industrial utility value because the adhesive film can be reliably inserted into the space between the folded pieces of the folded paper.

It is a plane schematic diagram of the contact letter manufacturing apparatus which has the adhesive film insertion mechanism of 1st Embodiment. It is a side view of the adhesive film insertion mechanism of FIG. FIG. 3 is an enlarged partial view of FIG. 2. FIG. 3 is a top view of FIG. 2. FIG. 3 is a view taken in the direction of arrow V in FIG. 2. It is sectional drawing which shows the structure of an adhesive film, (a) shows the state before isolation | separation, (b) shows the state in the middle of isolation | separation. It is a perspective view of the paper folded by the horizontal V type. It is sectional drawing of the paper immediately after the adhesive film was inserted in the space between folded pieces. It is sectional drawing of the contact letter obtained through the adhesion | attachment means. It is a principal part side view of the contact letter manufacturing apparatus which has the adhesive film insertion mechanism of 2nd Embodiment. It is a perspective view of the paper folded into Z shape. It is a side view of the adhesive film insertion mechanism of another embodiment. It is a side view of the adhesive film insertion mechanism of another embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Adhesive letter manufacturing apparatus 6 Adhesive film insertion mechanism 60 Suction box 601 Upper surface 612 Conveying belt 613 Conveying surface 6131 Raised part 615 Thick member 6151 Contact surface 67 Lower suction conveying means 68 Upper suction conveying means 9 Adhesive film 91 Base material layer 92 , 93 Adhesive layer 11 Paper 111, 112, 113 Folded piece

Claims (7)

Adhesive letter manufacturing, in which an adhesive film that has an adhesive layer on the front and back surfaces of the base material layer and can be separated and separated into two layers is inserted between the folded pieces of the folded paper In the adhesive film insertion mechanism of the device,
Upper suction transport means for transporting the paper with the upper folded piece of the folded paper sucked to the transport surface, and transporting the paper with the lower folded piece of the folded paper sucked to the transport surface A lower suction conveying means for
A part of the conveying surface of the lower suction conveying means is raised in the middle of the conveying direction,
The said protruding part is formed in the conveyance direction upstream rather than the position which inserts an adhesive film, The adhesive film insertion mechanism characterized by the above-mentioned. The transport surface is composed of a transport belt,
The adhesive film insertion mechanism according to claim 1, wherein the raised portion is formed by a thick member provided directly below the conveyance belt.   The adhesive film insertion mechanism according to claim 2, wherein the contact surface of the thick member with respect to the transport belt is processed to reduce a coefficient of friction with respect to the transport belt.   The adhesive film insertion mechanism according to claim 3, wherein a coating layer is formed as the processing on the contact surface of the thick member.   The adhesive film insertion mechanism according to claim 2, wherein the thick member is a rotating roller. The lower suction conveyance means includes a conveyance belt that constitutes a conveyance surface, and a suction box that exerts a downward suction force under the conveyance belt,
The adhesive film insertion mechanism according to claim 1, wherein the raised portion is formed by raising a part of the upper surface of the suction box.   A contact letter manufacturing apparatus comprising the adhesive film insertion mechanism according to claim 1.

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