Gluing device and conveying support device for gluing device

Abstract

To provide a gluer device capable of reducing a delay in an adhered part by a contact-type glue gun, and a conveyance assisting device for the gluer device.SOLUTION: A folder gluer 1 applies a glue on a gluing part GS of a corrugated cardboard sheet SS by a gluing device 14. The corrugated cardboard sheet SS includes a first panel P1 provided with the gluing part GS and a second panel P2 connected to the first panel P1 via a connecting part CN1. A lower conveyor belt 48A of the folder gluer 1 contacts the second panel P2 and conveys the second panel P2 in a conveyance direction PD. Furthermore, a conveyance assisting device 49 of the folder gluer 1 contacts the first panel P1 when the gluing device 14 contacts the gluing part GS, and conveys the first panel P1 in the conveyance direction PD.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a cardboard sheet conveying technique in a gluing device for applying an adhesive to a cardboard sheet.

Background Art

[0002] Conventionally, in a cardboard box manufacturing machine, for example, after performing processes such as printing and grooving on a cardboard sheet flowing through a box manufacturing line, an adhesive is applied, folded, and adhered. As the adhesive, for example, a vinyl acetate resin-based adhesive can be used. Patent Document 1 below describes a technique for applying glue to the glue margin portion of a cardboard sheet running on a box manufacturing line. In the technique of Patent Document 1, a contact type glue gun is used to discharge glue to the glue margin portion to perform gluing.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A contact type glue gun can stably apply glue to the glue margin portion by discharging glue while contacting the glue margin portion, compared to a non-contact type glue gun. On the other hand, a contact type glue gun generates a frictional force that resists the conveying direction against the glue margin portion by contacting the glue margin portion. For this reason, there is a risk that the conveying speed of the glue margin portion is slower than that of other parts. The time for discharging glue from the contact type glue gun to one glue margin portion can be set to a predetermined time that is predicted to be the time during which the glue margin portion and the contact type glue gun will be in contact according to the conveying speed of the cardboard sheet. However, due to the occurrence of a delay in the conveying direction of the glue margin portion, the gluing of the rear portion in the conveying direction becomes insufficient, or the glue is not applied to the rear side. As a result, there is a risk that the adhesion becomes insufficient even when folded and adhered.

[0005] In particular, the aforementioned delay in transport is likely to increase as the depth of the corrugated cardboard box decreases. For example, in the connection between a first panel with an adhesive margin and a second panel adjacent to the first panel, as shown in Reference 1, the shorter the dimension in the transport direction, that is, the shallower the box depth, the smaller the second moment of area of ​​the connection. When the second panel is transported with the belt of the transport device in contact with the bottom surface of the second panel and glue is applied using a contact-type glue gun, the first panel tilts towards the rear in the transport direction due to the frictional force generated in the adhesive margin. As the box depth decreases and the second moment of area decreases, the tilt increases, and the delay is likely to increase. Furthermore, if the second panel side being transported by the transport device is considered as the fulcrum, the longer the length of the first panel in the width direction perpendicular to the transport direction, the greater the moment generated in the adhesive margin, and the greater the delay is likely to increase.

[0006] The present invention was made to solve the above-mentioned problems and aims to provide a gluing device that can reduce the delay of bonding at the part to be bonded by a contact-type glue gun, and a conveying assist device for the gluing device. [Means for solving the problem]

[0007] This specification relates to a gluing apparatus for applying adhesive to a portion of a corrugated cardboard sheet, wherein the corrugated cardboard sheet has a bendable panel that is bent relative to a non-bendable panel after the adhesive has been applied to the portion to be bonded, and the portion to be bonded is provided on the bendable panel. The bending panel is connected to a connecting portion, the connecting portion connects the non-bending panel and the bending panel, the gluing device includes a first conveying device that contacts the non-bending panel and conveys the non-bending panel in the conveying direction, an applicating device that contacts the portion to be bonded and applies the adhesive, and a second conveying device that, when the applicating device and the portion to be bonded come into contact, contacts the bending panel and conveys the bending panel in the conveying direction. A guide device is positioned opposite the second conveying device in the vertical direction, and the folded panel is sandwiched between the second conveying device and the guide device, and the folded panel is guided in the conveying direction. Equipped with The guide device comprises a guide support member, a plurality of belt rotating members rotatably attached to the guide support member, a guide belt wound around the plurality of belt rotating members, and a moving device that positions the guide belt at a contact position in contact with the folding panel and at a separated position away from the folding panel. A gluing device is disclosed. Furthermore, the present invention is not limited to implementation as a gluing device; for example, it is also extremely beneficial to implement it as a conveying assist device that can be attached to a gluing device. [Effects of the Invention]

[0008] The gluer apparatus and conveying assist device for the gluer apparatus of the present invention can reduce the delay in bonding the part to be bonded by a contact-type glue gun. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view of the folder gluer 1 according to the first embodiment, and is a schematic diagram showing the overall configuration. [Figure 2] A diagram showing a corrugated cardboard sheet SS being loaded into a folder gluer 1 according to the first embodiment. [Figure 3] A plan view showing the movement mechanism for moving the upper support frames 20A and 20B and the lower support frames 22A and 22B. [Figure 4] A schematic diagram showing the side view of the gluing device 14 as seen from the rear. [Figure 5] A schematic diagram showing a corrugated cardboard sheet SS, gluing device 14, conveying assist device 49, and first folding station 10 in plan view. [Figure 6] Front view of the upper support frame 20A and the lower support frame 22A. [Figure 7] Front view of the guide device 51 and the transport assist device 49. [Figure 8] A top view of the main pulley 121 of the transport assist device 49. [Figure 9] Figure 7 shows a side view of the transport assist device 49, viewed from the left and right directions. [Figure 10] Figure 7 is a side view seen from the left and right directions. [Figure 11] This is a side view of the guide device 51 as seen from the left and right directions, showing the position of the pulley 155, and illustrating the state in contact position and separated position. [Figure 12] A block diagram showing the electrical configuration of folder gluer 1. [Figure 13] Front view of the guiding device 201 and the conveying assistance device 49 according to the second embodiment. [Figure 14] Side view of the guiding device 201 in FIG. 13 as viewed from the left - right direction. [Figure 15] Schematic plan view of the corrugated sheet SS, the gluing device 14, the conveying assistance device 205, and the first bending station 10 according to the third embodiment. [Figure 16] Front view of the guiding device 209 and the conveying assistance device 49 according to the fourth embodiment.

Mode for Carrying Out the Invention

[0010] Hereinafter, the folder gluer of the first embodiment, which is an embodiment in which the gluer device of the present invention is embodied, will be described with reference to the drawings. (First Embodiment) FIG. 1 schematically shows a front view of the folder gluer 1 of the first embodiment. The folder gluer 1 is a device incorporated, for example, in a part of a corrugated sheet - making machine. The folder gluer 1 receives a corrugated sheet that has been processed such as printed and grooved in the corrugated sheet - making machine, performs gluing on the received corrugated sheet, and then forms a box - shaped (before assembly) corrugated sheet box body by bending the corrugated sheet. The corrugated sheet - making machine includes, for example, a printing device such as a flexographic printing machine, a creaser, and a slitting device, and has a function of performing processing such as printing, ruling, and grooving on the corrugated sheet sequentially fed from the sheet feeding device. These corrugated sheet - making As the functions of the folder unit and the configuration for realizing the functions, for example, the configuration disclosed in Japanese Patent No. 3652429 can be adopted. Processing devices such as a slitter of a cardboard sheet-made folder unit are arranged on the carry-in side of the folder lug 1 in the conveyance direction PD (see FIG. 1) in which the cardboard sheet is conveyed. The box body formed by the folder lug 1 is carried out toward a counter ejector machine as disclosed in Japanese Patent No. 3652429, and a predetermined number of sheets are discharged as a batch sheet block (sheet stack). In the following description, as shown in FIG. 1, based on the direction of viewing the folder lug 1 (cardboard sheet-made folder unit) from the front, for example, the direction perpendicular to the installation surface of the folder lug 1 is referred to as the vertical direction, the direction parallel to the installation surface and in which each machine is arranged is referred to as the left-right direction, and the direction perpendicular to the vertical direction and the left-right direction is referred to as the front-back direction for explanation.

[0011] (Shape of the cardboard sheet SS) FIG. 2 shows the cardboard sheet SS carried into the folder lug 1 according to the present embodiment. The conveyance direction PD shown in FIG. 2 is the conveyance direction of the cardboard sheet SS in the folder lug 1, and is the direction from the right side to the left side in the folder lug 1. The width direction WD is a direction orthogonal to the conveyance direction PD, and is the front-back direction in the folder lug 1. Further, the width direction WD is a direction parallel to the plane of the cardboard sheet SS (the plane of the panel before folding) and orthogonal to the conveyance direction PD. As shown in FIG. 2, the cardboard sheet SS has, for example, first to fourth surface panels P1 to P4, a paste margin portion GS, four front flaps F1F to F4F, and four rear flaps F1R to F4R. The first panel P1 and the fourth panel P4 are examples of the folding panels of the present invention. The second panel P2 and the third panel P3 are examples of the non-folding panels of the present invention.

[0012] The first to fourth panels P1 to P4 are arranged side by side along the width direction WD and are connected to each other. The corrugated cardboard sheet SS has three connecting sections CN1 to CN3. The first panel P1 is connected to the second panel P2 via connecting section CN1. The second panel P2 is connected to the third panel P3 via connecting section CN2. The third panel P3 is connected to the fourth panel P4 via connecting section CN3. The length of the connecting sections CN1 to CN3 along the transport direction PD is the same as the length of the first to fourth panels P1 to P4 along the transport direction PD.

[0013] The adhesive margin GS is provided at the end of the first panel P1 in the width direction WD that is opposite to the end to which the connecting portion CN1 (second panel P2) is connected. The adhesive margin GS is formed to protrude outward in the width direction WD from the end of the first panel P1. The adhesive margin GS has a trapezoidal shape, for example, in the width direction WD, where the width along the transport direction PD narrows slightly from the base end side connected to the first panel P1 to the outer tip. The length L1 of the base end (the end on the first panel P1 side) of the adhesive margin GS along the transport direction PD is the same as the length of the first panel P1 along the transport direction PD, i.e., the length of the connecting portions CN1 to CN3 and the first to fourth panels P1 to P4. The length L1 is the depth of the corrugated cardboard box assembled from the corrugated cardboard sheet SS into a box shape. In this embodiment, the length L1 of the corrugated cardboard sheet SS is, for example, 100 mm. Furthermore, the width L2 of each of the first to fourth panels P1 to P4 in the width direction WD is, for example, 700 mm. Note that the length L1 is not limited to 100 mm, but may be longer than 100 mm or less than 100 mm. Similarly, the width L2 is not limited to 700 mm, but may be longer than 700 mm or less than 700 mm. Also, the length L1 of the adhesive portion GS does not have to be the same as the length of the first panel P1 or the box depth. For example, the length L1 of the adhesive portion GS may be longer than the length of the first panel P1 along the transport direction PD. As shown in Figure 2, the adhesive portion GS may be made to protrude upstream of the transport direction PD, and a groove such as the rear groove S4 may be provided, making the adhesive portion GS longer than the first panel P1. When bonding, adhesive may be applied to the protruding portion GSA and attached to the rear flap F4R. Also, the adhesive portion GS does not have to be trapezoidal in shape. For example, the adhesive portion GS may have other shapes such as a rectangle. Shape is also acceptable.

[0014] Furthermore, the four front flaps F1F to F4F are connected to the front ends (left ends in Figure 2) of the first to fourth panels P1 to P4, respectively. Similarly, the four rear flaps F1R to F4R are connected to the rear ends (right ends in Figure 2) of the first to fourth panels P1 to P4, respectively. Images D1 to D4 are printed on each of the first to fourth panels P1 to P4 by a printing device (not shown) located upstream of the folder gluer 1. These images D1 to D4 generally represent information about the contents of the assembled corrugated cardboard box. Note that the corrugated cardboard sheet SS does not necessarily have images printed on it.

[0015] Furthermore, vertical creases PK1 to PK4 are formed on the corrugated cardboard sheet SS by a creaser (not shown) positioned upstream of the folder gluer 1. The vertical creases PK1 to PK4 are formed at the connection point between the first panel P1 and the adhesive margin GS, and at the connection points (connection points CN1 to CN3) between each panel. Also, front grooves S1 to S3 and rear grooves S4 to S6 are formed on the corrugated cardboard sheet SS by a slotter (not shown) positioned upstream of the folder gluer 1. The front grooves S1 to S3 are cut out with an opening on the front end FE side of the corrugated cardboard sheet SS, and the rear grooves S4 to S6 are cut out with an opening on the rear end RE side of the corrugated cardboard sheet SS. Each of the front grooves S1 to S3 is formed in a position aligned with each of the rear grooves S4 to S6 in the transport direction PD. Each of the connection points CN1 to CN3 is formed in the portion sandwiched between the front grooves S1 to S3 and the rear grooves S4 to S6 in the transport direction PD.

[0016] Furthermore, horizontal lines WK1 and WK2 are formed on the corrugated cardboard sheet SS. The horizontal lines WK1 and WK2 are formed, for example, by a scorer of a known corrugating machine, along the width direction WD at the connection points between each panel and each front flap, and between each panel and each rear flap. The vertical lines PK1 to PK4 and the horizontal lines WK1 and WK2 are formed on the back surfaces of the first to fourth panels P1 to P4. Then, by folding the flaps of the box-shaped corrugated cardboard box that has been glued together, a cubic corrugated cardboard box can be assembled.

[0017] (Overall structure of Folder Gluer 1) As shown in Figure 1, the folder gluer 1 includes an input-side holding member 2, an output-side holding member 4, and an intermediate holding member 6. Each holding member is fixed to the installation surface. The folder gluer 1 also includes a conveying device 8, a first folding station 10, and a second folding station 12. The conveying device 8 conveys the corrugated cardboard sheet SS along the conveying path PL in the conveying direction PD. The first folding station 10 folds the first panel P1 and the fourth panel P4 of the corrugated cardboard sheet SS from a flat state (0-degree position) to a position of approximately 90 degrees. The second folding station 12 is located on the output side of the first folding station 10 and folds the first panel P1 and the fourth panel P4 from a position of approximately 90 degrees to a position of 180 degrees.

[0018] As shown in Figures 1 and 3, the folder gluer 1 comprises a pair of upper support frames 20A and 20B, and a pair of lower support frames 22A and 22B. In this specification, for pairs of members arranged side by side in the front-to-back direction, the reference numeral "A" is added to the reference numeral of the member located on the front side, and the reference numeral "B" is added to the reference numeral of the member located on the rear side. That is, as shown in Figure 3, for example, of the pair of upper support frames 20A and 20B arranged side by side in the front-to-back direction, the front side is upper support frame 20A and the rear side is upper support frame 20B.

[0019] The upper support frames 20A and 20B extend from the loading side of the folder gluer 1 (right end in Figure 1) to the unloading side of the folder gluer 1 (left end in Figure 1). It is provided along the entire length. The lower support frames 22A and 22B are provided from the loading side of the folder gluer 1 to the position of the intermediate holding member 6. The upper support frames 20A and 20B and the lower support frames 22A and 22B are configured to be movable in the width direction WD, and their position is changed according to the length of the width direction WD of the corrugated cardboard sheet SS. The loading side holding member 2 and the unloading side holding member 4 are each provided with a loading side moving mechanism 24 and an unloading side moving mechanism 26 for moving the upper support frames 20A and 20B in the width direction WD. The loading side holding member 2 is also provided with a loading side moving mechanism 28 for moving the lower support frames 22A and 22B in the width direction WD. In addition, intermediate moving mechanisms 30 and 32 are provided on the installation surface near the intermediate holding member 6 for moving the upper support frames 20A and 20B and the lower support frames 22A and 22B in the width direction WD.

[0020] The folder gluer 1 is equipped with a pair of upper conveyor belts 40A and 40B that extend in the left-right direction and are stretched parallel to the conveyor path PL. Each of the upper conveyor belts 40A and 40B is supported by upper support frames 20A and 20B, respectively, and is positioned above the conveyor path PL, along the entire length of the folder gluer 1, and parallel to the conveyor path PL. The upper conveyor belts 40A and 40B are of the suction type, for example, only in the area where the second folding station 12 is located, and are used to suck the upper surface of the corrugated cardboard sheet SS and convey it in the conveyor direction PD. The upper conveyor belts 40A and 40B are driven by an upper conveyor motor 42 provided on the discharge side of the folder gluer 1. A conveyor amount detector 44 for detecting the conveying amount of the upper conveyor belts 40A and 40B is connected to the rotation axis of the upper conveyor motor 42. The spacing in the width direction WD of the upper conveyor belts 40A and 40B is adjusted, for example, according to the width spacing between the vertical creases PK2 and PK4 of the corrugated cardboard sheet SS.

[0021] The first bending station 10 includes a pair of bending bars 46A and 46B positioned on both sides of the transport path PL, and a pair of downward transport belts 48A and 48B that support and transport the corrugated cardboard sheet SS from below. The pair of bending bars 46A and 46B extend, for example, from the position of the loading-side holding member 2 to the position of the intermediate holding member 6 and are attached to the upper support frames 20A and 20B, respectively. The upstream portion of the bending bars 46A and 46B is positioned above the transport path PL, and the downstream portion is inclined to be positioned gradually below the transport path PL. The bending bars 46A and 46B contact the respective surfaces (upper surface in Figure 1) of the first and fourth panels P1 and P4, and bend each of the first and fourth panels P1 and P4 downward from a 0-degree position to a position of approximately 90 degrees. A pair of downward conveyor belts 48A and 48B are stretched between the input side of the folder gluer 1 and the position of the intermediate holding member 6, and are driven by a downward conveyor motor 50. The downward conveyor belts 48A and 48B work together with the upward conveyor belts 40A and 40B to convey the corrugated cardboard sheet SS. A conveying assist device 49 and a guide device 51 are installed in front of the downward conveyor motor 50 to convey the first panel P1 when it is glued by the gluing device 14. Details of the conveying assist device 49 and the guide device 51 will be described later.

[0022] Furthermore, a pair of lower support frames 22A and 22B are each fitted with a folding plate (not shown). Each of these folding plates has an edge member with a pointed tip at the top, and the tip of the edge member contacts the vertical lines PK2 and PK4 on the back (bottom) surface of the connecting parts CN1 and CN3. This makes the first panel P1 easier to bend at the vertical line PK2 (connecting part CN2). Also, the fourth panel P4 is made easier to bend at the vertical line PK4 (connecting part CN3).

[0023] Furthermore, the second bending station 12 is equipped with a pair of panel bending belts 58A, 58B and a pair of guide and regulating mechanisms 60A, 60B on both sides of the transport path PL in the width direction WD. The panel bending belts 58A, 58B and the guide and regulating mechanisms 60A, 60B are each supported by upper support frames 20A, 20B. The guide and regulating mechanisms 60A, 60B have, for example, a plurality of known gauge rolls. The guide and regulating mechanism 60A is connected The guide and regulating mechanism 60A has multiple gauge rolls arranged in the transport direction PD in accordance with the position of section CN1. The guide and regulating mechanism 60B also has multiple gauge rolls arranged in the transport direction PD in accordance with the position of connection section CN3. The guide and regulating mechanisms 60A and 60B guide the connection sections CN1 and CN3 to be bent using the multiple gauge rolls.

[0024] The panel bending belts 58A and 58B are stretched by numerous rollers and are positioned along the entire length of the second bending station 12, bringing the surfaces of the first and fourth panels P1 and P4 into contact with the flat surfaces. The flat surfaces of the panel bending belts 58A and 58B are positioned vertically on the upstream side of the conveying direction PD, and gradually tilt as they move downstream, eventually becoming horizontal. The panel bending belts 58A and 58B, and the guide and regulating mechanisms 60A and 60B are driven by drive motors (not shown). The corrugated cardboard sheet SS is guided at the connection points CN1 and CN3 by the guide and regulating mechanisms 60A and 60B, and the panel bending belts 58A and 58B guide each of the first and fourth panels P1 and P4 from a 90-degree position to a 180-degree position, and then bent. The spacing of the panel bending belts 58A and 58B in the width direction WD can be adjusted according to the spacing of the vertical creases PK2 and PK4 on the corrugated cardboard sheet SS.

[0025] (Detailed configuration of the mechanism for moving support frames 20A-22B in the front-rear direction (width direction WD)) The folder gluer 1 is equipped with loading-side moving mechanisms 24, 28, unloading-side moving mechanism 26, and intermediate moving mechanisms 30, 32 as mechanisms for moving the upper support frames 20A, 20B and lower support frames 22A, 22B in the front-rear direction (width direction WD). The dashed line shown in Figure 3 indicates the center line CL passing through the central position of the folder gluer 1 in the front-rear direction. Region R1 is the region sandwiched between the upper support frames 20A, 20B in the front-rear direction. Region R2F is the region extending in front of region R1, and region R2R is the region extending behind region R1. As a moving mechanism for moving the support frames such as the upper support frames 20A, 20B in the width direction, for example, a mechanism disclosed in Japanese Patent Publication No. 5883747 can also be used.

[0026] As shown in Figure 3, the loading-side moving mechanism 24 comprises a pair of servo motors 62A and 62B provided in regions R2F and R2R of the loading-side holding member 2, a pair of screw shafts 64A and 64B, and a pair of nut members 66A and 66B. The servo motors 62A and 62B are connected to the screw shafts 64A and 64B, respectively. The screw shafts 64A and 64B extend in the front-rear direction from the position of each servo motor 62A and 62B to the center line CL and are rotatably supported near the center line CL. The nut members 66A and 66B are screwed onto the screw shafts 64A and 64B and are connected to the upper support frames 20A and 20B, respectively, via a pair of connecting members 68A and 68B. As a result, when each screw shaft 64A, 64B rotates independently due to the rotational drive of each servo motor 62A, 62B, each nut member 66A, 66B moves in the front-to-back direction on each screw shaft 64A, 64B, and the upstream portion of each upper support frame 20A, 20B moves in the front-to-back direction.

[0027] The unloading-side moving mechanism 26 has the same configuration as the loading-side moving mechanism 24. Therefore, the description of the unloading-side moving mechanism 26 will be omitted as appropriate. The unloading-side moving mechanism 26 comprises servo motors 70A and 70B, screw shafts 72A and 72B connected to the servo motors 70A and 70B, and nut members 74A and 74B screwed onto the screw shafts 72A and 72B. When the rotational drive of each servo motor 70A and 70B causes each screw shaft 72A and 72B to rotate independently, each nut member 74A and 74B moves in the front-rear direction, and the downstream portions of each upper support frame 20A and 20B connected to the nut members 74A and 74B move in the front-rear direction.

[0028] The intermediate moving mechanism 30 has a screw shaft 78A connected to a servo motor 76A, and a nut member 8 0A is screwed in. Similarly, the intermediate moving mechanism 32 has a nut member 80B screwed onto a screw shaft 78B connected to a servo motor 76B. The servo motors 76A and 76B are fixed to the mounting surface where the intermediate holding member 6 is fixed and are located in region R1. The screw shafts 78A and 78B extend in the front-rear direction from the position of each servo motor 76A and 76B toward each upper support frame 20A and 20B and are rotatably supported on the mounting surface. The nut members 80A and 80B are screwed onto the screw shafts 78A and 78B respectively and are connected to sliding members 82A and 82B respectively. A single guide rail 84 is positioned on the mounting surface of the intermediate holding member 6 so as to extend in the front-rear direction. The sliding members 82A and 82B are slidable in the front-rear direction on the guide rail 84. The sliding members 82A and 82B are connected to the upper support frames 20A and 20B, respectively, via connecting members 86A and 86B. When the screw shafts 78A and 78B rotate independently due to the rotational drive of the servo motors 76A and 76B, the nut members 80A and 80B move in the front-rear direction, and the sliding members 82A and 82B slide in the front-rear direction on the guide rail 84. As a result, the middle portions of the upper support frames 20A and 20B move in the front-rear direction.

[0029] Although not shown in the diagram, the loading-side moving mechanism 28, like the loading-side moving mechanism 24, is equipped with a pair of servo motors, a pair of screw shafts, a pair of nut members, etc. The loading-side moving mechanism 28 rotates each screw shaft independently by the rotational drive of each servo motor, moves each nut member in the front-rear direction on each screw shaft, and moves the upstream portion of each lower support frame 22A, 22B in the front-rear direction. In addition, the sliding members 82A, 82B are connected to the lower support frames 22A, 22B via connecting members 86A, 86B, respectively. Therefore, when the servo motors 76A, 76B of the intermediate moving mechanisms 30, 32 are driven, the sliding members 82A, 82B slide in the front-rear direction on the guide rail 84, and the intermediate portion of each lower support frame 22A, 22B moves in the front-rear direction.

[0030] Furthermore, the folder gluer 1 is provided with a sheet detector 91 upstream of the loading-side holding member 2 (see Figure 12). The transport amount detector 44 is a device that detects corrugated cardboard sheets SS (such as the front end FE) being transported from the upstream device to the folder gluer 1. As the sheet detector 91, for example, a known optical sensor equipped with a light-emitting part and a light-receiving part can be used. The sheet detector 91 outputs a low-level sheet detection signal to the control device 171 (see Figure 12) when, for example, no corrugated cardboard sheets SS are passing through and the light from the light-emitting part is not blocked. Also, in response to the passage of corrugated cardboard sheets SS, when the light emitted from the light-emitting part is reflected at the front end FE of the corrugated cardboard sheets SS and received by the light-receiving part, the sheet detector 91 outputs a high-level sheet detection signal to the control device 171.

[0031] Furthermore, the folder gluer 1 is equipped with a gluing device 14 that applies glue to the adhesive margin GS of the corrugated cardboard sheet SS. Figure 4 schematically shows the gluing device 14 as viewed from the rear. The gluing device 14 is positioned, for example, downstream of the loading-side holding member 2 and in close proximity to the loading-side holding member 2. The gluing device 14 may also be positioned inside the loading-side holding member 2 or upstream of the loading-side holding member 2.

[0032] The gluing device 14 includes a support plate 93 attached to the main body of the gluing device 14, a gluing device moving mechanism 94 (see Figure 12), a head 95, a sheet guide 96, and a glue supply device 97 (see Figure 12). The support plate 93 is movable in the width direction WD by the gluing device moving mechanism 94. The configuration of the gluing device moving mechanism 94 is not particularly limited, but for example, similar to the loading-side moving mechanism 24 described above, it can be configured to include a servo motor, a screw shaft connected to the servo motor, and a nut member screwed onto the screw shaft.

[0033] The head 95 is connected to a glue supply device 97 located on the main body side of the gluing device 14 via piping 98 (such as a hose), and glue is supplied from the glue supply device 97. The glue is the adhesive of the present invention. This is one example, for instance, a vinyl acetate resin adhesive. However, the adhesive of the present invention is not limited to vinyl acetate resin adhesives, and other adhesives such as starch paste dissolved in water, inorganic adhesives such as water glass mainly composed of sodium silicate, or synthetic adhesives such as polyvinyl alcohol dissolved in water can be used. The head 95 is detachably attached to a support member 101 fixed to a support plate 93 by fastening members 102 such as bolts. A nozzle 99 is attached to the lower surface of the head 95. The nozzle 99 is, for example, a metal member and has multiple openings 99A formed therein for dispensing adhesive. The multiple openings 99A are arranged, for example, in the width direction WD.

[0034] A sheet guide 96 is provided below the nozzle 99 and the opening 99A. The sheet guide 96 is formed, for example, by bending a thin metal plate into a roughly L-shape. The first side 96A of the sheet guide 96 is detachably attached to a support member 103 fixed to the support plate 93 by fastening members 105 such as bolts. The second side 96B of the sheet guide 96, which is not fixed by the fastening members 105, extends toward the opening 99A and is slightly inclined toward the opening 99A. When the head 95 and the sheet guide 96 are attached to the support plate 93, the opening 99A and the tip of the second side 96B are facing each other in the vertical direction. A receiving member 107 for receiving fallen glue is provided below the second side 96B.

[0035] Upstream of the gluing device 14, an upper sheet guide 109 and a lower sheet guide 111 are provided. The upper sheet guide 109 is positioned above the lower sheet guide 111 and guides the upper surface of the first panel P1 of the corrugated cardboard sheet SS, which has been transported from upstream, toward the gluing device 14. The lower sheet guide 111 also guides the lower surface of the first panel P1 of the corrugated cardboard sheet SS, which has been transported from upstream, toward the gluing device 14. The glued portion GS of the corrugated cardboard sheet SS is guided between the opening 99A of the nozzle 99 and the second side portion 96B of the sheet guide 96, as the first panel P1 is guided by the upper and lower sheet guides 109 and 111, and glue is applied to its upper surface. The head 95 applies glue to the glued portion GS by, for example, bringing the opening 99A into contact with the glued portion GS. Therefore, the head 95 is a contact-type glue gun. The head 95 is an example of the application device of the present invention.

[0036] The adhesive-coated adhesive margin GS is bonded to the fourth panel P4 by a bonding roller (not shown) when the corrugated cardboard sheet SS is discharged from the folder gluer 1. The gluing device 14 can also move the head 95 (opening 99A) and sheet guide 96 (second side portion 96B) to the position of the adhesive margin GS in the width direction WD by moving the support plate 93 in the width direction WD using the gluing device moving mechanism 94. That is, the adhesive discharge position can be adjusted to the position of the adhesive margin GS. Figure 5 schematically shows a plan view of the corrugated cardboard sheet SS, the gluing device 14, the conveying assist device 49 (lower belt 139), and the first folding station 10. As shown in Figure 5, the gluing device 14 is located opposite the lower belt 139 of the conveying assist device 49, which will be described later, in the width direction WD. In the vertical direction, the gluing device 14 is located above the lower belt 139 with the corrugated cardboard sheet SS in between. Therefore, the gluing device 14 is positioned above the lower belt 139 and offset from the lower belt 139 in a direction parallel to the width direction WD. In other words, if the position of the gluing device 14 in the width direction WD is aligned with the lower belt 139, the gluing device 14 will be positioned opposite the lower belt 139 in the vertical direction.

[0037] Furthermore, the gluing device 14 of this embodiment allows for the reversal of the upper and lower relationship between the head 95 and the sheet guide 96. In the configuration of this embodiment, for example, the fourth panel P4 is folded to follow the folding of the first panel P1 to a 180-degree position, and the fourth panel P4 is placed on the outside (gluing surface) of the gluing allowance GS. Specifically, the gluing allowance GS is folded by 180 degrees by the first and second folding stations 10 and 12 after glue is applied to the gluing surface on the upper surface. When bent, the adhesive surface faces downwards and is joined to the lower surface of the fourth panel P4 (the surface that faces upwards after being folded), which is folded later. In other words, the folder gluer 1 performs an internal bonding process, attaching the adhesive portion GS to the inside of the fourth panel P4.

[0038] For example, to increase the capacity of the corrugated cardboard box being manufactured, it may be desirable to perform external bonding by joining the adhesive portion GS to the outside of the fourth panel P4. In this case, the user may, for example, remove the head 95 and sheet guide 96 from the support plate 93 and swap their upper and lower positions. The user may also, for example, adjust the second folding station 12 so that the fourth panel P4 is folded before the first panel P1. This allows the upper surface of the adhesive portion GS before folding to be joined to the upper surface of the fourth panel P4 that has been folded first (the surface that faces downward after folding).

[0039] Furthermore, the adhesive margin GS is an example of the adhesive portion of the present invention. The adhesive portion of the present invention is not limited to a portion that protrudes from the first panel P1, such as the adhesive margin GS. For example, as shown in the adhesive portion GS1 of Figure 2, the adhesive portion GS1 may be provided in the fourth panel P4 where the adhesive margin GS is not provided, at a position corresponding to the adhesive margin GS, that is, at a corresponding position within the panel enclosed by the grid lines (horizontal grid lines WK1, WK2, vertical grid line PK4), and adhesive may be applied to it. Then, adhesive may be applied to the adhesive portion GS1 and bonded to the adhesive margin GS which does not have adhesive applied.

[0040] Therefore, the bendable panel of the present invention is not limited to the first panel P1, but may also be the fourth panel P4. Also, the non-bendable panel is not limited to the second panel P2, but may also be the third panel P3. Furthermore, if the corrugated cardboard sheet SS has four or more panels, the surfaces on which the adhesive portion GS or the adhesive portion GS1 are provided may be bendable panels, and panels connected to the bendable panels and that cannot be bent after adhesive is applied may be non-bendable panels.

[0041] (Regarding the transport assist device 49 and the guide device 51) Figure 6 is a side view of the upper support frame 20A and the lower support frame 22A, showing the mounting portions of the transport assist device 49 and the guide device 51. Figure 6 also shows the front view of the upper support frame 20A and the lower support frame 22A. The mounting positions of the transport assist device 49 and the guide device 51 are indicated by dashed lines.

[0042] As shown in Figure 6, a connecting member 68A is attached to the lower part of the front lower support frame 22A. A lower conveying motor 50 is attached to the connecting member 68A. The lower conveying belt 48A is connected to the lower conveying motor 50 and rotates based on the drive of the lower conveying motor 50. A main pulley 121 is also provided on the front of the lower support frame 22A. The main pulley 121 is, for example, a metal pulley (annular member) and is rotatably mounted on the lower support frame 22A. The main pulley 121 is rotatable around a rotation axis parallel to the front-rear direction. The pulleys 123 and others described later are also rotatable around a rotation axis parallel to the front-rear direction, similar to the main pulley 121. Furthermore, the main pulley 121 and the other pulleys described later are not limited to metal members, but may be made of other materials such as resin. Also, the size and shape of each pulley are examples.

[0043] The lower conveyor belt 48A is wound around the outer circumference of the main pulley 121. Furthermore, when the lower conveyor belt 48A is rotated by the lower conveyor motor 50, the main pulley 121 rotates together with the lower conveyor belt 48A. Therefore, the main pulley 121 rotates in accordance with the rotation of the lower conveyor motor 50. In addition, a plurality of pulleys 123 are rotatably mounted on the lower support frame 22A. Each of the plurality of pulleys 123 is, for example, a smaller diameter pulley than the main pulley 121, and is arranged in a line in the conveying direction PD (left-right direction) at the upper edge of the lower support frame 22A, below the lower support frame 22A. Multiple units are arranged. The lower conveyor belt 48A is wound around the main pulley 121 and several pulleys 123, and rotates in conjunction with the rotation of the lower conveyor motor 50. The rear lower conveyor belt 48B rotates in conjunction with the rotation of the lower conveyor motor 50, similar to the front lower conveyor belt 48A. The lower conveyor belt 48B rotates at the same speed as the lower conveyor belt 48A, for example, and conveys the corrugated cardboard sheet SS in the conveying direction PD at the same speed as the lower conveyor belt 48A. The first folding station 10 may be equipped with separate lower conveyor motors 50 to rotate the lower conveyor belts 48A and 48B, or one lower conveyor motor 50 may be shared and used as a drive source for both belts.

[0044] Figure 7 shows a front view of the conveying assist device 49 and guide device 51 mounted in front of the main pulley 121. Figure 8 is a plan view of the connection between the main pulley 121 and the conveying assist device 49. Figure 9 is a side view of Figure 7, showing the conveying assist device 49 viewed from the left and right directions at the position of the pulley 137, which will be described later. Figure 10 shows the conveying assist device 49 and guide device 51 viewed from the left and right directions at the position of the main pulley 152, which will be described later. Note that some components are shown transparently in Figures 7 to 10 and Figure 11, which will be described later. Also, in Figure 7, the pulley 155 and upper belt 156, which are located at the separated position 167, which will be described later, are shown by dashed lines.

[0045] As shown in Figures 7 to 10, the conveying assist device 49 comprises one main pulley 131, a collar 133, a plate 135, multiple pulleys 137, a lower belt 139, and a tension adjustment mechanism 140. The collar 133 is, for example, a metal annular member, and is smaller in diameter than the main pulleys 121 and 131. In the front-rear direction, the collar 133 is located behind the main pulley 131 and is positioned between the main pulleys 131 and 121. The collar 133 is fixed to the front of the main pulley 121 by fastening members 141 such as bolts inserted into it. The main pulley 131 is also fixed to the front of the collar 133 by fastening members 143 such as bolts inserted into it. The main pulley 131 is positioned at a distance from the main pulley 121 by the thickness of the collar 133 in the front-rear direction. The main pulley 131 and the collar 133 are fixed to the main pulley 121, allowing them to rotate integrally around the same axis of rotation as the main pulley 121's axis of rotation 125. The main pulley 131 has, for example, the same diameter as the main pulley 121. However, the radius of the main pulley 131 may differ from the radius of the main pulley 121.

[0046] The plate 135 is, for example, a metal plate. As shown in Figure 6, the front surface of the lower support frame 22A is provided with a projection 127 extending in the left-right direction. The projection 127, for example, protrudes forward from the front surface of the lower support frame 22A, has a predetermined thickness in the vertical direction, and is formed along a direction parallel to the left-right direction. The plate 135 is fixed to the front surface of the projection 127 by a fastening member 145 (see Figure 9). Each of the plurality of pulleys 137 is rotatably mounted on the plate 135 and is rotatable about an axis of rotation parallel to the front-rear direction. The plurality of pulleys 137 are, for example, smaller in diameter than the main pulley 131, and are arranged in a row of three above and one below to the left of the main pulley 131. The lower belt 139 is wound around the main pulley 131 and the plurality of pulleys 137. Therefore, when the main pulley 121 rotates in conjunction with the rotation of the lower conveying motor 50, the lower belt 139 rotates by receiving the rotational driving force via the main pulley 131. Of the four pulleys 137, the upper three pulleys 137 are arranged parallel to each other in the left-right direction. The lower belt 139 contacts the lower surface of the first panel P1 above these three pulleys 137 and conveys the first panel P1. The lower belt 139 rotates at the same speed as the lower conveying belt 48A, for example, and conveys the first panel P1 in the conveying direction PD at the same speed (an example of the first speed of the present invention). The conveying assist device 49 may be equipped with, for example, a variable speed gear, and the lower belt 139 may be rotated at a different rotational speed than the lower conveying belt 48A.

[0047] The guide device 51 is positioned above the transport assist device 49 in the vertical direction. The transport assist device 49 and the guide device 51 clamp the first panel P1 from above and below and transport the first panel P1 in the transport direction PD according to the drive. The lower belt 139 is stretched in the left-right direction by the main pulley 131 and three pulleys 137 at the clamping position 147 where the first panel P1 is clamped, for example, with its plane parallel to the front-rear and left-right directions.

[0048] The tension adjustment mechanism 140 is a device for adjusting the tension of the lower belt 139. The tension adjustment mechanism 140 includes, for example, a pulley that rotatably contacts the lower belt 139 and a frame that supports the pulley. When the user needs to adjust the tension of the lower belt 139, for example due to deterioration of the lower belt 139, the user adjusts the position of the frame of the tension adjustment mechanism 140 to adjust the force applied from the pulley of the tension adjustment mechanism 140 to the lower belt 139, thereby adjusting the tension of the lower belt 139.

[0049] The guide device 51 is positioned opposite the transport assist device 49 in the vertical direction. The guide device 51 includes a pair of main pulleys 151 and 152, a plate 153, multiple pulleys 155, an upper belt 156, a servo motor 157, and an air cylinder 159. Figure 11 is a side view of the guide device 51 as seen from the left and right directions, showing the position of the pulley 155, and illustrating the contact position and the separated position.

[0050] As shown in Figures 7, 10, and 11, the main pulley 152 has the same shape as, for example, the main pulley 151 and is positioned to the right (upstream) of the main pulley 151 in the left-right direction. The main pulleys 151 and 152 are rotatably mounted to the upper support frame 20A, are located in front of the upper support frame 20A, and are rotatable about an axis of rotation parallel to the front-rear direction.

[0051] The plate 153 is, for example, a metal plate, and has a plurality (five in this embodiment) of pulleys 155 attached to it. Each pulley 155 is mounted on the back (rear side) of the plate 153 and is rotatable about an axis of rotation parallel to the front-rear direction. Each pulley 155 is positioned between a pair of main pulleys 151 and 152 in the left-right direction. The five pulleys 155 are arranged, for example, two on the upper side and three on the lower side, with each set of upper and lower pulleys arranged side by side in the left-right direction. The upper belt 156 is wound around the pair of main pulleys 151 and 152 and the five pulleys 155.

[0052] A servo motor 157 is connected to the left main pulley 151. The output shaft of the servo motor 157 is connected to the rotation axis of the main pulley 151 via a timing belt 161. As a result, the upper belt 156 receives the rotational driving force of the servo motor 157 via the timing belt 161 and the main pulley 151, and rotates in accordance with the rotation of the servo motor 157. For example, the lower belt 139 rotates counterclockwise around a rotation axis along the direction perpendicular to the plane of the paper in Figure 7 based on the drive of the downward transport motor 50, and the upper belt 156 rotates clockwise. The servo motor 157 rotates at a predetermined rotational speed based on the control of the control device 171 (see Figure 12) of the folder gluer 1, which will be described later. The control device 171 controls the rotational speed of the servo motor 157, for example, to rotate the upper belt 156 at the same speed as the lower belt 139.

[0053] Furthermore, the air cylinder 159 is located on the upper part of the plate 153. The air cylinder 159 is fixed, for example, to a plate 163 located on the upper front of the upper support frame 20A. The air cylinder 159 is mounted with the main body portion containing the cylinder fixed to the plate 163, and the output rod 159A protruding downwards. The output rod 159A moves vertically based on the drive of the air cylinder 159. do.

[0054] A bracket 165 is attached to the upper part of plate 153. The bracket 165 is fixed to the rear of plate 153. The bracket 165 is, for example, a metal plate-shaped member and has a roughly L-shape when viewed from the left or right direction. The lower part 165A of the bracket 165 (see Figure 10) faces forward and has a flat surface that is parallel to the vertical and horizontal directions. Plate 153 is fixed to the front of the lower part 165A by multiple bolts 160. The upper part 165B of the bracket 165 faces upward and has a flat surface that is parallel to the horizontal and front-to-back directions. A plate-shaped connecting plate 162 is attached to the lower end (tip) of output rod 159A. The connecting plate 162 is fixed to the lower surface of output rod 159A by multiple cap bolts 164 in a state parallel to the horizontal and front-to-back directions. The connecting plate 162 is also fixed to the upper surface of the upper part 165B by multiple bolts 166. Accordingly, plate 153 is attached to output rod 159A via bracket 165 and connecting plate 162. Multiple pulleys 155 move vertically along with plate 153 as it moves vertically based on the drive of air cylinder 159. The upper belt 156 is displaced as it is pulled by the pulleys 155 as it moves, and a part of its position is changed. In addition, a pair of reinforcing ribs 165C are provided on the inner portion of the L-shaped bend of bracket 165. Each of the pair of ribs 165C connects the back surface of the lower part 165A to the underside of the upper part 165B. Note that the above-described connection configuration between output rod 159A and plate 153 is just one example. For example, bracket 165 or plate 153 may be directly fixed to the underside of output rod 159A.

[0055] The folder gluer 1 is equipped with, for example, an air supply device 170 that supplies air to the air cylinder 159 (see Figure 12). The control device 171 of the folder gluer 1 controls the air supply device 170 so that it can supply air at a first air pressure (an example of the first fluid pressure of the present invention) and air at a second air pressure (an example of the second fluid pressure of the present invention) that is lower than the first air pressure to the air cylinder 159. When the air cylinder 159 is supplied with air at the first air pressure, it raises the output rod 159A and the bracket 165 (plate 153) to a separated position 167. As the plate 153 rises, the upper belt 156 is pulled up by the pulley 155 and a portion of it rises (see the dashed line in Figure 7). The control device 171 supplies the first air pressure to the air cylinder 159, thereby positioning the upper belt 156 at the separated position 167, where a portion of the upper belt 156 has been raised (see the right side of Figure 11). The upper belt 156 is positioned at the separated position 167, causing it to rise to a position separated from the upper surface of the first panel P1 being conveyed. In this state, even if the upper belt 156 rotates based on the drive of the servo motor 157, it does not come into contact with the first panel P1 and does not impart any conveying force to the corrugated cardboard sheet SS.

[0056] Meanwhile, the control device 171 lowers the output rod 159A and bracket 165 (plate 153) to the contact position 168 by supplying air at the second air pressure to the air cylinder 159. The multiple pulleys 155 descend along with the lowering of the plate 153. The upper belt 156 descends as the plate 153 descends, being pulled by the pulleys 155. The upper belt 156 is positioned at the contact position 168, where its lower surface contacts the upper surface of the first panel P1 (see the left side of Figure 11). When the upper belt 156 is positioned at the contact position 168, for example, at the clamping position 147 that sandwiches the first panel P1, it is stretched in a direction parallel to the left-right direction, with its plane parallel to the front-rear and left-right directions. That is, the upper belt 156 is stretched with its plane parallel to the lower belt 139. When the upper belt 156 is positioned at the contact position 168, it is positioned with a small gap between it and the lower belt 139 in the vertical direction. The first panel P1 of the corrugated cardboard sheet SS is inserted into this gap and transported in the transport direction PD while sandwiched between the upper belt 156 and the lower belt 139.

[0057] Furthermore, when supplied with the second air pressure, the air cylinder 159 positions the plate 153 at the contact position 168 and biases the plate 153 upward with a predetermined biasing force. This predetermined biasing force is of a magnitude that cancels out the force applied from the guide device 51 to the first panel P1 by the weight of the guide device 51. More specifically, the force with which the air cylinder 159 biases the output rod 159A upward when supplied with air at the second air pressure is, for example, a force of a magnitude that can compensate for the difference between the sum of the gravitational forces acting on the members connected to (hanging) the output rod 159A (bracket 165, plate 153, multiple pulleys 155, and upper belt 156) and the upward component of the tension that the plate 153 receives from the upper belt 156, thus compensating for the insufficient amount of upward force. As a result, the guide device 51 is biased upward by the air cylinder 159, so that, for example, the vertical forces acting on the plate 153 are balanced, and the upper belt 156 is positioned as if it were floating at the contact position 168. Note that the magnitude of the force that biases the output rod 159A upward by the second air pressure described above is just an example. For example, the force that biases the output rod 159A upward may be a force smaller than the difference between the sum of the gravitational forces acting on the members connected to the output rod 159A and the upward component of the tension that the plate 153 receives from the upper belt 156.

[0058] Furthermore, the gap between the upper belt 156 positioned at the contact position 168 and the lower belt 139 is matched to the thickness of the thinnest corrugated cardboard sheet SS that can be manufactured in a corrugated cardboard sheet box making machine having a folder gluer 1. The thickness of the thinnest corrugated cardboard sheet SS could be, for example, 0.5 mm, 1.5 mm, or 3 mm. As a result, even when the thinnest corrugated cardboard sheet SS is being transported, the upper belt 156 contacts and transports the first panel P1. Also, when a corrugated cardboard sheet SS thicker than the thinnest corrugated cardboard sheet SS is being transported, the upper belt 156 rises, contacting the first panel P1 as the weight of the guide device 51 is offset by the air cylinder 159. The upper belt 156 rises as if pushed up by the first panel P1, rises to a height corresponding to the thickness of the first panel P1, and then contacts and transports the first panel P1. This allows the upper belt 156 to be in good contact with the upper surface of the first panel P1 and transport corrugated cardboard sheets SS of any thickness. Alternatively, the gap between the upper belt 156 and the lower belt 139 may be eliminated to ensure contact.

[0059] Furthermore, the guide device 51 is equipped with a stopper 169 that restricts the downward movement of the plate 153 and the bracket 165. More specifically, as shown in Figures 7 and 10, a block 175 is attached to the front surface of the upper support frame 20A and the plate 163. The block 175 is fixed by a bolt 176 in a state where it protrudes forward from the portion where the upper support frame 20A and the plate 163 overlap. The front end of the block 175 extends to a position close to the back surface of the lower part 165A of the bracket 165. A threaded member 177 for which the stopper 169 is screwed is attached to the front end of the block 175. The threaded member 177 is, for example, a nut, and is attached to the block 175 with its insertion hole aligned in the vertical direction. The stopper 169 is, for example, a bolt, and is screwed onto the threaded member 177 from above. The stopper 169 is screwed onto the threaded member 177 and attached to the block 175 in a state where it protrudes upward from the block 175. The amount of protrusion of the stopper 169 from the block 175 is adjusted according to the position in which it is screwed onto the threaded member 177. Note that the threaded member 177 is not limited to a nut, but may also be a hole with a female thread formed therein. Also, the stopper 169 is not limited to a bolt, but may also be a screw or the like.

[0060] Furthermore, a protective member 178 is attached to the lower part 165A. The protective member 178 is, for example, a bolt, and is located in the center of the upper part 165B in the left-right direction, and is screwed into the upper part 165B from below. The stopper 169 is located below the protective member 178. The protective member 178 is positioned opposite the protective member 178 in the vertical direction. As a result, the protective member 178 moves downward as the output rod 159A extends downward and the connecting plate 162 and bracket 165 move downward, and comes into contact with the stopper 169. The stopper 169 restricts the downward movement of the bracket 165 by supporting the protective member 178 from below. For example, when the pressure of the air cylinder 159 is changed from the first air pressure to the second air pressure, the output rod 159A moves downward in accordance with the tension of the upper belt 156, etc. The bracket 165 moves downward as the output rod 159A moves downward, its movement is restricted by the stopper 169, and it is positioned at the contact position 168. In other words, the user can adjust the contact position 168 in the vertical direction by adjusting the amount of protrusion (screw position) of the stopper 169. Furthermore, by providing a protective member 178 on the bracket 165 and bringing the protective member 178 into contact with the stopper 169, deformation of the bracket 165 due to contact can be suppressed. Also, if deformation occurs in the protective member 178, it can be removed from the bracket 165 and replaced. Note that the configuration of the stopper 169 described above is just one example. For example, the guide device 51 may be configured without a protective member 178. In this case, the stopper 169 may be brought into direct contact with the bracket 165 to restrict the movement of the bracket 165. In addition, the stopper 169 and the protective member 178 are not limited to metal members, but may be configured to be made of elastic material in part or in whole.

[0061] The air cylinder 159 is an example of a fluid pressure cylinder and moving device of the present invention. The fluid pressure cylinder of the present invention is not limited to an air cylinder; for example, a hydraulic cylinder may also be used. Furthermore, the moving device that moves the upper belt 156 between the contact position 168 and the separation position 167 is not limited to a fluid pressure cylinder. For example, the moving device may be a ball screw mechanism equipped with a servo motor, screw shaft, nut, etc., as in the loading-side moving mechanism 24. The moving device may also be an actuator that moves the rack in response to the motor's drive, or a cam mechanism that converts the motor's output into a force that moves the plate 153 vertically using an eccentric cam. The moving device may also be a combination of at least one of the above-mentioned ball screw mechanism, actuator, and eccentric cam, and a mechanism biased by the air cylinder 159.

[0062] As shown in Figure 5, the lower conveyor belt 48A contacts the lower surface of the second panel P2 near the connection portion CN1 in the corrugated cardboard sheet SS, for example, and conveys the second panel P2 in the conveying direction PD. The lower conveyor belt 48B contacts the lower surface of the third panel P3 near the connection portion CN3, and conveys the third panel P3 in the conveying direction PD. The lower belt 139 of the conveying assist device 49 contacts the lower surface of the first panel P1 near the connection portion CN1, and conveys the first panel P1 in the conveying direction PD. The upper belt 156 is positioned above the lower belt 139 and conveys the first panel P1 in the conveying direction PD with the lower belt 139 sandwiched between them (see Figure 7). In the width direction WD, the lower belt 139 is positioned at a distance corresponding to the thickness of the color 133 from the lower conveyor belt 48A. The connection portion CN1 of the corrugated cardboard sheet SS is conveyed in the conveying direction PD above the color 133. Specifically, the lower belt 139 and the lower conveyor belt 48A are positioned close to each other, with the connecting portion CN1 sandwiched between the widthwise WD. The positions of the lower belt 139 and the lower conveyor belt 48A are adjusted according to the length of the widthwise WD of the corrugated cardboard sheet SS by driving the aforementioned loading-side moving mechanism 24, etc. A portion of the lower belt 139 passes through the gluing device 14 and is positioned on a straight line parallel to the widthwise WD. Therefore, in the transport direction PD, the gluing device 14 is positioned within the range from the position where the lower belt 139 loads the corrugated cardboard sheet SS to the position where the lower belt 139 discharges the corrugated cardboard sheet SS. Alternatively, in the transport direction PD, the gluing device 14 may be positioned downstream of the position where the lower belt 139 discharges the corrugated cardboard sheet SS. For example, the lower belt 139 may be positioned to contact a portion of the first panel P1 located upstream of the adhesive portion GS while the adhesive device 14 applies adhesive to the adhesive portion GS, and to be transported in the transport direction PD. Alternatively, the adhesive device 14 may be positioned upstream of the position where the lower belt 139 is brought in with the corrugated cardboard sheet SS. For example Furthermore, the gluing device 14 is positioned upstream of the loading position of the lower belt 139, and the lower belt 139 is positioned so as to contact the portion of the first panel P1 located downstream of the glued portion GS before the gluing device 14 contacts the glued portion GS.Then, while the gluing device 14 applies glue to the glued portion GS, the lower belt 139 contacts the portion of the first panel P1 located downstream of the glued portion GS and is transported in the transport direction PD.In addition, in the two configurations described above, it is preferable that the corrugated cardboard sheet SS has a large second moment of area corresponding to the length of the transport direction PD at the portion of the first panel P1 that contacts the lower belt 139, and that the first panel P1 is less likely to bend even when subjected to resistance from the gluing device 14.That is, it is preferable that the rigidity is such that the first panel P1 does not bend due to resistance from the gluing, even when only a part of the first panel P1 is transported by the lower belt 139 and gluing is performed by the gluing device 14.

[0063] (Electrical configuration of folder gluer 1) Figure 12 is a block diagram showing the electrical configuration of the folder gluer 1. In addition to the devices described above, the folder gluer 1 includes a control device 171, a storage device 172, a drive circuit group 173, etc. The control device 171 is, for example, a computer mainly composed of a CPU, and is a device that comprehensively controls the folder gluer 1. The storage device 172 is, for example, RAM, ROM, HDD, etc., and stores various data related to the folder gluer 1. The control device 171 also controls the operation of the folder gluer 1 by executing the program 172A stored in the storage device 172 with the CPU. The drive circuit group 173 is connected to each of the devices described above, such as the gluing device 14 and the gluing device moving mechanism 94. The drive circuit group 173 is a plurality of drive circuits for controlling each of the devices of the folder gluer 1, and controls the operation of each device based on the control of the control device 171. More specifically, the drive circuits are, for example, amplifiers that perform motor feedback control and signal processing circuits that acquire sensor signals.

[0064] Furthermore, the folder gluer 1 is connected to the control device 181 by wire or wireless connection. The control device 181 is, for example, a device that comprehensively manages the processing of corrugated cardboard sheets SS in a corrugated cardboard sheet box making machine. The control device 181 generates control command information according to a predetermined processing management plan for multiple orders. This control command information includes, for example, the transport speed of the corrugated cardboard sheets SS, the rotation speed of the main motors (target control speed), the overall size of the corrugated cardboard sheets SS and the size of each part, the processing quantity, and the paper quality of the corrugated cardboard sheets. Before starting the processing of the corrugated cardboard sheets SS, the control device 171 obtains the control command information necessary for controlling the folder gluer 1 from the control device 181. The control device 181 also transmits control command information to other devices in the corrugated cardboard sheet box making machine to control their operation, but in Figure 12, other devices (such as the printing device) are not shown to avoid making the drawing too complex. Known methods can be used for the operation and control of other devices.

[0065] (Folder Gluer 1 operation) The operation of Folder Gluer 1 will now be explained. First, the management device 181 transmits control command information necessary to execute a predetermined order to the control device 171. The control device 171 drives the servo motors of each moving mechanism (such as the loading-side moving mechanism 24) according to the control command information obtained from the management device 181 to move each support member (such as the upper support frame 20A), and positions each support member to match the width WD in the width direction of the corrugated cardboard sheet SS as determined by the control command information. For example, the control device 171 positions the upper support frame 20A directly above the vertical crease line PK2 (see Figure 2) of the corrugated cardboard sheet SS being transported, and positions the upper support frame 20B directly above the vertical crease line PK4. Also, for example, the control device 171 positions the folded plate (not shown) of the lower support frame 22A at a position that contacts the vertical crease line PK2 of the corrugated cardboard sheet SS from below, and positions the folded plate of the lower support frame 22B at a position that contacts the vertical crease line PK4 from below. Furthermore, as shown in Figure 5, the control device 171 controls the lower belt 139 and the lower The conveyor belt 48A is positioned in the width direction WD to sandwich the connection part CN1. The control device 171 is positioned so that the rear lower conveyor belt 48B is in contact with the lower surface of the third panel P3.

[0066] Furthermore, the control device 171 drives each motor (upper conveying motor 42, lower conveying motor 50) according to the control command information, and rotates each belt (panel folding belt 58A, lower conveying belt 48A, etc.) at a predetermined rotational speed. As a result, each belt rotates at a desired rotational speed according to the weight of the ordered corrugated cardboard sheet SS. The conveying assist device 49 is also driven in conjunction with the rotation of the lower conveying motor 50, and rotates the lower belt 139 at the same speed as the lower conveying belt 48A, for example. The control device 171 also drives the servo motor 157 of the guide device 51, and rotates the upper belt 156 at the same speed as the lower belt 139.

[0067] When the sheet feeding device of the corrugated cardboard sheet box making machine is activated and the supply of corrugated cardboard sheets SS begins, the corrugated cardboard sheets SS are processed by the printing device and other equipment upstream of the folder gluer 1, and the corrugated cardboard sheets SS are supplied to the input side of the folder gluer 1 in a flat state as shown in Figure 2. The corrugated cardboard sheets SS are held between the upper conveyor belts 40A and 40B and the lower conveyor belts 48A and 48B and transported in the transport direction PD.

[0068] Furthermore, the control device 171 discharges glue from the gluing device 14 in accordance with the passage of the glued portion GS of the corrugated cardboard sheet SS through the gluing device 14. The control device 171 discharges glue from the gluing device 14 for, for example, a predetermined discharge time. For example, the control device 171 determines the start timing of discharge from the time when the sheet detector 91 detects the front end FE of the corrugated cardboard sheet SS flowing from upstream. Specifically, at the time when the sheet detector 91 detects the front end FE, the distance DT between the glued portion GS and the opening 99A of the gluing device 14 along the transport direction PD is expressed by the following formula. Distance DT = (Distance from the opening 99A to the sheet detector 91 along the transport direction PD) + (Distance from the sheet detector 91 to the adhesive portion GS along the transport direction PD) The distance from the opening 99A along the transport direction PD to the sheet detector 91 is pre-stored, for example, in the storage device 172 of the folder gluer 1 (see Figure 12). In the case of the corrugated cardboard sheet SS of this embodiment shown in Figure 2, the distance from the sheet detector 91 along the transport direction PD to the adhesive portion GS (distance from the front end FE to the adhesive portion GS) at the time the front end FE is detected by the sheet detector 91 corresponds to the length of the front flap F1F along the transport direction PD. Therefore, the control device 171 can detect the distance from the sheet detector 91 (front end FE) to the adhesive portion GS from the order information (length of the front flap F1F along the transport direction PD). The control device 171 may also accept the value of the distance from the front end FE to the adhesive portion GS from the user. For example, since the length L1 of the adhesive portion GS may differ from the length of the first panel P1, the control device 171 may accept the value of the distance from the front end FE to the adhesive portion GS for each order. Furthermore, for example, the control device 171 counts the pulse signals acquired from the transport volume detector 44 to calculate the actual transport speed of the corrugated cardboard sheet SS. The control device 171 calculates the distance DT from the above information and formulas, and divides the calculated distance DT by the transport speed detected by the transport volume detector 44. This makes it possible to detect the time from the moment the front end FE is detected by the sheet detector 91 until the adhesive portion GS reaches the opening 99A.

[0069] Furthermore, the control device 171, for example, causes the adhesive to be applied from a position that is a predetermined distance behind the front end of the adhesive portion GS in the transport direction PD. That is, a margin is provided between the front end of the area to be applied to the adhesive portion GS and the front end of the adhesive portion GS where adhesive is not applied. Similarly, the control device 171 provides a margin between the rear end of the area to be applied to the adhesive portion GS and the rear end of the adhesive portion GS where adhesive is not applied. The control device 171, for example, divides the length of the margin provided on the front end FE side of the adhesive portion GS by the transport speed detected by the transport amount detector 44. 171 determines the time from the time the sheet detector 91 detects the front end FE until discharge begins by adding the time calculated from the margin to the time calculated from the distance DT. This prevents adhesive from being applied from the front end of the adhesive area GS, thereby suppressing adhesive overflow from the adhesive area GS and preventing the overflowed adhesive from falling.

[0070] Furthermore, the control device 171 sets the discharge time, which is the time from the start of discharge to the continuation of discharge, by dividing the length of the area to which adhesive is applied along the transport direction PD (for example, the length obtained by subtracting the front and rear margins from the length L1 of the adhesive allowance portion GS) by the transport speed detected by the transport amount detector 44. However, the method for setting the adhesive discharge time is not limited to the method described above. For example, the control device 171 does not need to set the above margin. The control device 171 may apply adhesive from the front end of the adhesive allowance portion GS. Also, the control device 171 may use the transport speed set in the control command information (target transport speed) as the transport speed for setting the discharge time. In this case, the folder gluer 1 does not need to be equipped with the transport amount detector 44. Alternatively, the folder gluer 1 may be equipped with a sheet sensor that detects when the adhesive allowance portion GS of the corrugated cardboard sheet SS has reached the adhesive application device 14. The control device 171 may also determine the discharge start timing according to the distance PD in the transport direction between the sheet sensor and the opening 99A of the nozzle 99 and the transport speed.

[0071] As described above, the folder gluer 1 of this embodiment is equipped with a transport assist device 49 and a guide device 51 as devices for transporting the first panel P1 during gluing. The transport assist device 49 and the guide device 51 contact the first panel P1 and transport it in the transport direction PD while the adhesive portion GS passes between the opening 99A and the second edge portion 96B of the gluing device 14, that is, while the glue is applied to the adhesive portion GS. The first panel P1 is transported in the transport direction PD at the same speed as other panels (such as the second panel P2) by the transport assist device 49 and the guide device 51.

[0072] The corrugated cardboard sheet SS, which has been glued to the adhesive portion GS, is transported to the first folding station 10. At the first folding station 10, the corrugated cardboard sheet SS is folded by a pair of folding bars 46A and 46B from a flat position at 0 degrees to a position of approximately 90 degrees, with the first panel P1 and the fourth panel P4 being folded. The corrugated cardboard sheet SS, folded to a position of approximately 90 degrees, moves to the second folding station 12, where the spacing between the vertical crease lines PK2 and PK4 is restricted to a predetermined guide spacing by the guide and regulating mechanisms 60A and 60B, and it is transported downstream by the upper conveyor belts 40A and 40B. At this time, the first panel P1 and the fourth panel P4 are folded by the panel folding belts 58A and 58B from a position of approximately 90 degrees to a position of 180 degrees. After that, the glued and folded corrugated cardboard sheet SS is discharged from the folder gluer 1 as a box and collected by the counter ejector. The box body formed from glued corrugated cardboard sheets SS can be assembled into a cubic corrugated cardboard box by folding the front flaps F1F to F4F along the horizontal crease line WK1 and the rear flaps F1R to F4R along the horizontal crease line WK2.

[0073] Incidentally, in the first embodiment described above, the folder gluer 1 is an example of a gluer device of the present invention. The gluing device 14 is an example of a coating device. The lower support frame 22A is an example of a support frame. The lower conveyor belts 48A, 48B and the lower conveyor motor 50 are examples of a first conveyor device. The lower conveyor belt 48A is an example of a drive belt. The lower conveyor motor 50 is an example of a drive source. The conveying auxiliary device 49 is an example of a second conveyor device. The main pulley 121 is an example of a drive rotating member. The main pulley 131 is an example of a first rotating member. The plate 135 is an example of a support member. The pulley 137 is an example of a second rotating member. The lower belt 139 is an example of a belt. The plate 153 is an example of a guide support member. The pulley 155 is an example of a belt rotating member. The upper belt 156 is an example of a guide belt. The servo motor 157 is an example of a guide drive source. The air cylinder 159 is an example of a moving device, a fluid pressure cylinder. The plate 163 is above This is an example of a support frame. Bracket 165 is an example of a guide support member. The adhesive portion GS is an example of a bonded portion. The first panel P1 and the fourth panel P4 are examples of folded panels. The second panel P2 and the third panel P3 are examples of non-folded panels.

[0074] As described above, the first embodiment provides the following effects. (1) The folder gluer 1 of the first embodiment is a gluing device that applies glue to the glued portion GS of a corrugated cardboard sheet SS. The corrugated cardboard sheet SS has a first panel P1 which is provided with a glued portion GS and can be folded, and a second panel P2 which is connected to the first panel P1 via a connecting portion CN1 and cannot be folded. The folder gluer 1 is equipped with a downward conveyor belt 48A and a downward conveyor motor 50 that contact the second panel P2 and convey the second panel P2 in the conveying direction PD. The folder gluer 1 is also equipped with a conveying assist device 49 that contacts the first panel P1 when the gluing device 14 and the glued portion GS come into contact and conveys the first panel P1 in the conveying direction PD.

[0075] In this embodiment, a contact-type glue gun, such as the gluing device 14, applies glue while the opening 99A of the nozzle 99 is in contact with the glue bezel GS, preventing glue from splashing back and allowing for more stable glue application compared to a non-contact type glue gun. On the other hand, friction may occur due to the contact between the opening 99A and the glue bezel GS, potentially causing the conveying speed of the glue bezel GS to lag behind other parts. For example, if the glue discharge time is set in advance, as in this embodiment, the delay can result in uneven or insufficient gluing. In particular, as the length of the connecting portion CN1 in the conveying direction PD decreases (as in the above embodiment, as the length L1 of the glue bezel GS decreases, or as the box depth decreases) (e.g., 100 mm or less), the second moment of area of ​​the connecting portion CN1 decreases, potentially increasing the aforementioned delay in conveying speed. If the transport assist device 49 is not provided, when the lower transport belt 48A is in contact with the lower surface of the second panel P2 and the adhesive portion GS comes into contact with the contact-type glue gun, the first panel P1 will tilt towards the rear in the transport direction PD due to the frictional force generated at the adhesive portion GS. Furthermore, if the second panel P2 side that is in contact with the lower transport belt 48A is considered as the fulcrum, the longer the width L2 of the first panel P1 in the width direction WD (e.g., 700 mm or more), the greater the moment generated at the adhesive portion GS, which may increase the delay.

[0076] Furthermore, the first folding station 10, which is equipped with the gluing device 14, is a folder device that folds the first panel P1, which is provided with a glued portion GS, during transport. For this reason, it is difficult to bring the downward conveying belts 48A and 48B, which are provided over the entire area of ​​the first folding station 10 in the transport direction PD, into contact with the first panel P1 to be folded. As a result, if the second panel P2 and third panel P3 are transported by the downward conveying belts 48A and 48B and gluing is performed on the first panel P1, which is not being subjected to transport force, the first panel P1 will retract, causing a delay and potentially resulting in poor gluing.

[0077] One possible method to improve this adhesive defect is to appropriately change the adhesive discharge time according to the delay that occurs in the first panel P1. However, with this method, when producing corrugated cardboard sheets SS with a shallow box depth or corrugated cardboard sheets SS with a long width L2, it is necessary to set the discharge start timing and discharge time according to the amount of delay of the corrugated cardboard sheet SS being produced. As a result, the workload on the user increases. In addition, even with the same production order, the amount of delay in the first panel P1 that occurs in each corrugated cardboard sheet SS is not necessarily constant. For this reason, even if the same discharge time is set for the same production order, there is a risk that adhesive defects may occur in some sheets.

[0078] Another possible method to improve the delay is to reduce the production speed of the corrugated cardboard sheet box making machine as much as possible to minimize the effects of the second moment of area and other moments mentioned above. However, this method requires reducing the conveying speed of not only the folder gluer 1 but also other equipment, which significantly reduces production efficiency.

[0079] Therefore, in the folder gluer 1 of this embodiment, as shown in Figure 5, a transport assist device 49 is provided to transport the first panel P1 when gluing is performed by the gluing device 14. With this, by supporting the first panel P1, which has a longer transport direction PD than the connection part CN1, with the transport assist device 49, the effective second moment of area can be increased and the tilting of the first panel P1 can be suppressed. In addition, by directly applying transport force to the first panel P1 which is provided with the glue allowance part GS, the tilting of the first panel P1 and the bending of the connection part CN1 can be suppressed, and the delay that occurs in the glue allowance part GS can be reduced. Furthermore, by using the first panel P1 as a fulcrum, the fulcrum is brought closer to the point of application of the moment generated in the width direction WD on the first panel P1, the moment can be reduced and the tilting of the first panel P1 can be suppressed, and glue can be applied uniformly to the rear end of the glue allowance part GS. In addition, adjustment of the discharge time by the user, as in the other method described above, is not required, and the workload of the user can be reduced. Furthermore, since there is no need to slow down the production speed of the corrugated cardboard sheet box making machine, production efficiency can be improved.

[0080] (2) The lower conveyor belt 48A conveys the second panel P2 at a predetermined first speed. The conveying assist device 49 is positioned opposite the gluing device 14 in the width direction WD. Specifically, in the above embodiment, the gluing device 14 is positioned above the lower belt 139 in the vertical direction, with the corrugated cardboard sheet SS in between, and offset from the lower belt 139 in a direction parallel to the width direction WD. The conveying assist device 49 then conveys the first panel P1 in the conveying direction PD at the same speed as the first speed. With this, the conveying assist device 49 is positioned opposite the gluing device 14 in the width direction WD, and the second panel P2 and the first panel P1 can be conveyed at the same speed. The corrugated cardboard sheet SS can be conveyed with its front end FE aligned in a direction parallel to the width direction WD.

[0081] (3) The conveying assist device 49 includes a main pulley 131 that rotates in response to the drive of the downward conveying motor 50, a plate 135 attached to the lower support frame 22A of the folder gluer 1, a pulley 137 that is rotatably attached to the plate 135, and a lower belt 139 that is wound around the main pulley 131 and the pulley 137, contacts the lower surface of the first panel P1, and rotates based on the drive of the downward conveying motor 50 to convey the first panel P1 in the conveying direction PD. With this configuration, the delay of the adhesive portion GS can be reduced by rotating the lower belt 139 in response to the drive of the downward conveying motor 50 to convey the first panel P1.

[0082] (4) The first bending station 10 includes a main pulley 121 that rotates based on the drive of the downward conveying motor 50, and a downward conveying belt 48A that is wound around the main pulley 121, contacts the lower surface of the second panel P2, and rotates based on the drive of the downward conveying motor 50 to convey the second panel P2 in the conveying direction PD. The main pulley 131 is connected to the main pulley 121 and rotates integrally with the main pulley 121. With this configuration, the conveying device that conveys the second panel P2 and the conveying auxiliary device 49 can share a drive source. Reducing the number of drive sources can reduce manufacturing costs. In addition, by sharing a drive source, it becomes easier to synchronize the downward conveying belt 48A and the lower belt 139, and the processing content of the control to rotate at the same speed can be simplified. Furthermore, as shown in the third embodiment in Figure 15 described later, a configuration in which the downward conveying belt 48A (lower belt 139) is placed near the adhesive portion GS can also be adopted. From the perspective of bringing the fulcrum and application point of the moment closer together and directly transmitting the conveying force through the adhesive section GS, the configuration in Figure 15 is effective. On the other hand, as described above, the gluing device 14 of the first embodiment allows the head 95 and sheet guide 96 to be swapped vertically to accommodate both internal and external gluing. If the conveying assist device 49 (conveying assist device 205) is placed on the adhesive section GS side as in Figure 15 and a separate drive source is to be placed from the lower conveying motor 50, the area around the gluing device 14 (the structure attached to the support plate 93) may become complicated. As a result, it becomes difficult to secure workspace to swap the head 95 and sheet guide 96. For this reason, by placing the conveying assist device 49 on the lower conveying belt 48A side as in the first embodiment, manufacturing costs can be reduced by sharing the drive source. This allows for both a reduction in the amount of work involved and a reduction in the workload associated with replacing parts such as the head 95.

[0083] (5) The conveying assist device 49 includes a collar 133 positioned between the main pulley 131 and the main pulley 121 in the axial direction of the rotation axis 125 of the main pulley 131, and fastening members 141 and 143 that fix the main pulley 131 to the main pulley 121. The connecting portion CN1 is conveyed in the conveying direction PD above the collar 133. This allows the spacing between the lower belt 139 and the lower conveying belt 48A in the width direction WD to be adjusted by the collar 133. For example, the thickness of the collar 133 in the width direction WD is set to be greater than or equal to the length of the connecting portion CN1 (front groove S1, rear groove S4), which has the longest width direction WD among the corrugated cardboard sheets SS handled by the box-making machine. As a result, the lower belt 139 can be positioned to contact the first panel P1, and the lower conveying belt 48A can be appropriately positioned to contact the second panel P2.

[0084] (6) The folder gluer 1 further includes a guide device 51. The guide device 51 is positioned opposite the transport assist device 49 in the vertical direction and guides the first panel P1 in the transport direction PD by sandwiching the first panel P1 between the transport assist device 49 and the guide device 51. As a result, the first panel P1 can be stably transported by the transport assist device 49 by sandwiching the first panel P1 between the transport assist device 49 and the guide device 51 in the vertical direction. As a result, delays occurring in the adhesive portion GS can be more reliably eliminated.

[0085] (7) The guide device 51 includes a plate 153, a plurality of pulleys 155 rotatably mounted on the plate 153, an upper belt 156 wound around the plurality of pulleys 155, and an air cylinder 159 that positions the upper belt 156 at a contact position 168 that contacts the first panel P1 and a separated position 167 that is separated from the first panel P1. With this, the air cylinder 159 can switch between a state in which the first panel P1 is sandwiched between the guide device 51 and the transport assist device 49 and a state in which the guide device 51 is separated and does not sandwich the panel. For example, if no delay occurs in the adhesive portion GS depending on the length L1 and width L2, the guide device 51 can be positioned at the separated position 167 and transport can be performed.

[0086] (8) The guide device 51 has a servo motor 157 that rotates the upper belt 156. Based on the control of the control device 171, the servo motor 157 rotates the upper belt 156 at the same speed as the conveying assist device 49 conveys the first panel P1 in the conveying direction PD. More specifically, the servo motor 157 rotates the main pulley 151, thereby rotating the upper belt 156 at the same speed as the lower belt 139. This allows the upper and lower surfaces of the first panel P1 to be conveyed at the same speed, and the first panel P1 can be conveyed more stably.

[0087] (9) The air cylinder 159 is a fluid pressure cylinder that, when driven, biases the plate 153 upward so that it moves away from the transport assist device 49. When supplied with air at a first air pressure, the air cylinder 159 moves the plate 153 to the separated position 167. When supplied with air at a second air pressure lower than the first air pressure, the air cylinder 159 positions the plate 153 to the contact position 168 and biases the plate 153 upward with a biasing force that cancels out the force applied from the guide device 51 to the first panel P1 by the weight of the guide device 51 (plate 153, etc.). This cancels out the gravitational force acting on the guide device 51 by the air cylinder 159, allowing the guide device 51 to be positioned at the contact position 168 as if it were floating. When the upper belt 156 comes into contact with the first panel P1, which has been transported toward the clamping position 147, the upper belt 156 is lifted, allowing it to make proper contact with the upper surface of the first panel P1.

[0088] (10) The folder gluer 1 supports the guide device 51 above the transport assist device 49. The guide device 51 has a plate 163. The air cylinder 159 of the guide device 51 moves the plate 153 and the bracket 165 to a separated position 167 where the upper belt 156 is separated from the first panel P1, and to a contact position 168 which is lower than the separated position 167 and the upper belt 156 is in contact with the first panel P1. The guide device 51 also has a stopper 169 attached to a block 175 of the upper support frame 20A. The stopper 169 contacts a protective member 178 of the bracket 165 and restricts the downward movement of the bracket 165. As a result, by restricting the downward movement of the bracket 165 with the stopper 169, the downward movement of the pulley 155 can be restricted to a predetermined position.

[0089] Furthermore, in the first embodiment described above, the gap between the upper belt 156 and the lower belt 139 may be eliminated and they may be in contact. For example, the stopper 169 can be adjusted to a position where the upper belt 156 contacts the lower belt 139. Then, after the first panel P1 is transported from upstream and comes into contact with the upper belt 156, the upper belt 156 can be rotated and moved upward according to the thickness of the first panel P1. As a result, even if the upper belt 156 or the lower belt 139 wears down and a gap forms between the two belts, the first panel P1 can still be transported if the gap is large enough to transport it, without the user having to adjust the position of the upper belt 156.

[0090] (Second example) Next, a second embodiment of the present invention will be described. Figures 13 and 14 show the guide device 201 of the second embodiment. In the following description, components similar to those in the first embodiment described above will be denoted by the same reference numerals, and their descriptions will be omitted as appropriate. As shown in Figures 13 and 14, the guide device 201 of the second embodiment is equipped with a plurality (three in this embodiment) of non-crush rolls 202 that contact the upper surface of the first panel P1. The plurality of non-crush rolls 202 are provided behind the plate 153 and are rotatably mounted relative to the plate 153. The non-crush rolls 202 are, for example, grooved in the axial direction, and by adjusting the pressing force when the non-crush rolls 202 are pressed against the first panel P1 with the grooves, roller marks can be made less likely to be left. In addition, unlike the guide device 51 of the first embodiment, the guide device 201 is not equipped with an upper belt 156 or a mechanism for rotating the upper belt 156 (main pulley 151 or servo motor 157). Therefore, the guide device of the present invention is not limited to a device that actively transports the first panel P1 by driving a drive source, but may also be a device that rotates passively.

[0091] When the second air pressure is supplied to the air cylinder 159 of the guide device 201 and the plate 153 is positioned at the contact position 168, a small gap is created between the non-crush roll 202 and the lower belt 139, similar to the first embodiment. Then, when the first panel P1 is transported, the guide device 201 lifts the non-crush roll 202 with the first panel P1 and brings the non-crush roll 202 into contact with the upper surface of the first panel P1, causing it to rotate passively. The first panel P1 is transported sandwiched between the non-crush roll 202 and the lower belt 139.

[0092] Incidentally, in the second embodiment described above, the non-crush roll 202 is an example of a rotating guide member. Furthermore, the rotating guide member of the present invention is not limited to the non-crush roll 202; it may also be a metal pulley or a resin rubber roller.

[0093] As described above, the second embodiment provides the same effects as the first embodiment. Furthermore, the guide device 201 of the second embodiment includes a non-crush roll 202 that is rotatably mounted on the plate 153, and an air cylinder 159 that moves the plate 153 to a contact position 168 where the non-crush roll 202 is in contact with the first panel P1, and to a separated position 167 where the first panel P1 and the non-crush roll 202 are separated. With this, the non-crush roll 202 is rotated passively, and the non-crush roll 20 The first panel P1 can be placed between the 2 and the transport assist device 49 for transport. Furthermore, since there is no need to provide a drive source such as a servo motor 157 to the non-crush roll 202, manufacturing costs can be reduced.

[0094] Furthermore, in the second embodiment described above, the gap between the non-crush roll 202 and the lower belt 139 may be eliminated, and they may be made to come into contact with each other. In this case, the stopper 169 is adjusted to a position where the non-crush roll 202 comes into contact with the lower belt 139, and the non-crush roll 202 is made to come into contact with the lower belt 139 and rotated in advance until the first panel P1 is transported from upstream. After the first panel P1 is transported from upstream and comes into contact with the non-crush roll 202, the non-crush roll 202 can be rotated and moved upward according to the thickness of the first panel P1. That is, the non-crush roll 202 can be raised to a position corresponding to the thickness of the first panel P1, and the rotational force that was pre-rotated can be applied from the non-crush roll 202 to the first panel P1. Furthermore, even in the guide device 201 which does not have a drive source such as a servo motor 157 as in the second embodiment, the non-crush roll 202 can be rotated before the first panel P1 is conveyed from the upstream side by bringing the non-crush roll 202 into contact with the lower belt 139. In the case where the non-crush roll 202 is not rotated until the first panel P1 is conveyed, a loss of kinetic energy occurs because the non-rotating non-crush roll 202 is rotated by the first panel P1, which may cause a delay in the first panel P1. In contrast, by bringing the non-crush roll 202 into contact with the lower belt 139 and rotating it in advance, the loss of kinetic energy described above can be reduced.

[0095] (Third embodiment) Next, a third embodiment of the present invention will be described. In the first embodiment described above, the guide device 51 was configured to share the lower conveying motor 50 that drives the lower conveying belt 48A as a drive source. In contrast, as shown in Figure 15, the conveying assist device 205 of the third embodiment is equipped with a servo motor 207 as a drive source for rotating the main pulley 131 (lower belt 139). The servo motor 207 is attached, for example, to the support plate 93 of the gluing device 14. The main pulley 131 and pulley 137 (see Figure 7) are rotatably mounted to the support plate 93, for example. The main pulley 131 of the conveying assist device 205 is connected to the output shaft of the servo motor 207. When the servo motor 207 is driven based on the control of the control device 171 (see Figure 12), the conveying assist device 205 rotates the lower belt 139.

[0096] The transport assist device 205 moves in the width direction WD together with the gluing device 14, for example, based on the drive of the gluing device moving mechanism 94. The lower belt 139 is positioned at a constant distance from the head 95 in the width direction WD. When the gluing device 14 is positioned at the location of the glue allowance GS, the lower belt 139 is positioned to contact the lower surface of the portion near the glue allowance GS on the first panel P1. Although not shown in the figures, the upper guide device 51 may be attached to the support plate 93 and positioned above the transport assist device 205. The portion near the glue allowance GS is, for example, a position close to the vertical ruled line PK1 on the glue allowance GS side of the first panel P1. Alternatively, the portion near the glue allowance GS may be the portion on the glue allowance GS side of the first panel P1 from the center in the width direction WD.

[0097] Incidentally, in the third embodiment described above, the transport assist device 205 is an example of the second transport device. The servo motor 207 is an example of a drive source. The support plate 93 is an example of a frame for a coating device.

[0098] As described above, the third embodiment provides the same effects as the first embodiment. Furthermore, the transport assist device 205 of the third embodiment has a servo motor 207. The ta 207 is attached to the support plate 93 to which the head 95 is attached. The conveying assist device 205 contacts the vicinity of the adhesive portion GS of the first panel P1 in the width direction WD and conveys the first panel P1 in the conveying direction PD. This allows the lower belt 139 to be positioned closer to the adhesive portion GS. By bringing the lower belt 139 closer to the adhesive portion GS, the moment acting on the adhesive portion GS toward the rear in the conveying direction PD can be reduced, and the tilt of the first panel P1 and the delay of the adhesive portion GS can be reduced more reliably.

[0099] (Fourth embodiment) Next, a fourth embodiment of this model will be described. Figure 16 shows the guide device 209 of the fourth embodiment. The guide device 209 of the fourth embodiment does not include, for example, an air cylinder 159 or servo motor 157 that can switch between a state in the first embodiment where the first panel P1 is sandwiched between the guide device 51 and the transport assist device 49, and a state where the guide device 51 is separated and not sandwiched. An upper support plate 210, for example, which is a flat plate parallel to the vertical and horizontal directions, is attached to the plate 163. Multiple (four in the illustrated example) through holes 210A are formed in the upper support plate 210. The through holes 210A are elongated holes that are long in the vertical direction. An adjustment screw member 213 is attached to each of the multiple through holes 210A. Each of the multiple adjustment screw members 213 is, for example, a bolt, which is inserted into the through hole 210A and screwed to the plate 163. The upper support plate 210 has its position fixed to the plate 163 in the vertical direction changed depending on the position in which the adjustment screw member 213 is inserted and fixed into the through hole 210A. A connecting plate 162 is fixed to the lower end of the upper support plate 210. Therefore, the bracket 165 and the plate 153 are fixed to the plate 163 via the upper support plate 210.

[0100] Next, a method for adjusting the position of the upper belt 156 in the vertical direction in the guide device 209 of the fourth embodiment will be described. When the user adjusts the gap between the upper belt 156 and the lower belt 139 to a width suitable for the thickness of the corrugated cardboard sheet SS to be produced, for example, first, loosen all four adjustment screw members 213. This makes the upper support plate 210, the bracket 165 attached to the upper support plate 210, the upper belt 156, etc. movable in the vertical direction. Next, the user adjusts the position of the upper support plate 210 (all members including the bracket 165, etc.) in the vertical direction so that the position of the upper belt 156 is at an appropriate contact position. With the upper support plate 210 in the desired position, the user adjusts the height of the stopper 169. For example, the user adjusts the screw position of the stopper 169 relative to the screwed member 177 so that the protective member 178 and the stopper 169 come into contact when the upper support plate 210 is in the desired position. The user screws the adjustment screw member 213 onto the plate 163 and fixes the upper support plate 210 to the plate 163. This allows the user to change the height of the upper belt 156 by adjusting the position where the adjustment screw member 213 is screwed in. By adjusting the height of the upper belt 156 when positioned at the contact position 168, the gap between the upper belt 156 and the lower belt 139 can be adjusted to a gap more suitable for the thickness of the corrugated cardboard sheet SS being produced.

[0101] Furthermore, by adjusting the screwing position of the adjustment screw member 213, the upper belt 156 and the lower belt 139 can be brought into contact, that is, the gap can be eliminated. In this case, even if the guide device 209 does not have a drive source such as a servo motor 157, the upper belt 156 can be rotated before the first panel P1 is conveyed from the upstream side by bringing the upper belt 156 into contact with the lower belt 139. As a result, by bringing the upper belt 156 into contact with the lower belt 139 and rotating it in advance, the loss of kinetic energy associated with the contact between the upper belt 156 and the first panel P1 can be reduced.

[0102] As described above, the fourth embodiment provides the same effects as the first embodiment. (1) In addition, the adjustment screw member 213 of the fourth embodiment is inserted into the upper support plate 210 fixed to the connecting plate 162 and screwed into the plate 163. Upper support plate 210 The upper belt 156 has its vertical position relative to the upper support frame 20A (plate 163) changed depending on the position where the adjustment screw member 213 is screwed in. As a result, the relative height of the upper belt 156 with respect to the first panel P1 is adjusted. With this, there is no need to provide a moving device such as an air cylinder 159, and the user can adjust the position of the upper belt 156 to the appropriate position by adjusting the screw position of the adjustment screw member 213 according to the thickness of the corrugated cardboard sheet SS.

[0103] (2) In addition, the stopper 169 of the fourth embodiment restricts the downward movement of the upper support plate 210 by contacting the protective member 178. Therefore, even if the upper support plate 210 tries to move downward due to loosening of the adjustment screw member 213, the movement can be restricted by the stopper 169. Furthermore, the user can fine-tune the position of the upper support plate 210 in the vertical direction, i.e., the contact position 168, by adjusting the position in which the stopper 169 is screwed onto the screwed member 177. Therefore, by adjusting the stopper 169, the upper belt 156 can be properly contacted by the first panel P1.

[0104] It should be noted that the present invention is not limited to the embodiments described above, and various improvements and modifications are possible without departing from the spirit of the invention. For example, in the second embodiment shown in Figure 13, the configuration may be such that the air cylinder 159 is not provided, similar to the fourth embodiment shown in Figure 16. In this case, the height of the non-crush roll 202 may be adjusted as appropriate using the adjustment screw member 213 shown in Figure 16. Furthermore, the folder gluer 1 may be configured without the guide devices 51, 201, and 209. Furthermore, in the above embodiments, the guide devices 51, 201, and 209 were positioned above the first panel P1, and the conveying assist device 49 was positioned below the first panel P1. However, the reverse configuration is also acceptable. For example, the guide device 51 may be positioned below the first panel P1, with the lower belt 139 in contact with the upper surface, and the conveying assist device 49 may be positioned above the first panel P1, with the upper belt 156 in contact with the lower surface. Furthermore, the corrugated cardboard sheet SS is not limited to a 4-sided (4-panel) configuration; it may also be composed of other numbers of panels, such as 5-sided or 6-sided. Furthermore, in each of the above embodiments, the present invention employs a folder gluer 1 that has a folding function (folder function) for corrugated cardboard sheets SS in addition to the gluing function, but is not limited to this. The gluer may also be configured without folding bars 46A and 46B, that is, without a folding function.

[0105] The positions of each belt (conveyor) shown in Figure 5 are examples. For example, the lower belt 139 may be positioned in the center of the first panel P1 in the width direction WD. Alternatively, the lower conveyor belt 48A may be positioned to convey the third panel P3. Alternatively, the lower conveyor belt 48B may be positioned to convey the fourth panel P4. In this case, the gluing device may only perform gluing, and the folding operation may be performed by a downstream device. Furthermore, when gluing is performed on the fourth panel P4 as shown in the adhesive portion GS1 in Figure 2, the conveyor assist device 49 and the guide device 51 may be positioned to contact the fourth panel P4. The first and second rotating members and the belt rotating member of the present invention are not limited to annular members such as pulleys, but may also be disc-shaped or cylindrical members. Furthermore, the first and second rotating members and the belt rotating member may also be made of resin such as rubber. Furthermore, the support members, guide support members, and upper support frames are not limited to plate-shaped members such as plates 135 and 153, but may also be rectangular or bent members. The configuration of the conveying assist device 49 in the above embodiment is just one example. For example, the conveying assist device 49 may be configured without the collar 133. For example, the main pulley 131 may be connected to the main pulley 121 with a gap in the width direction WD equal to the size of the collar 133. The guide device 51 does not include a connecting plate 162 or bolts 166, etc., and the bracket 165 It is also acceptable to have the output rod 159A fixed to the rod by welding or other means. Furthermore, the first and second conveying devices of the present invention are not limited to conveying devices using belts, but may also be devices that convey corrugated cardboard sheets SS by bringing non-crush rolls or rubber rollers into contact with them. [Explanation of Symbols]

[0106] 1 Folder gluer (gluing device), 14 Adhesive device (coating device), 22A Lower support frame (support frame), 48A Lower conveyor belt (first conveyor device, drive belt), 48B Lower conveyor belt (first conveyor device, drive belt), 49, 205 Conveying auxiliary device (second conveyor device), 50 Lower conveyor motor (first conveyor device, drive source), 51, 201, 209 Guide device, 93 Support plate (frame for coating device), 121 Main pulley (driving rotating member), 131 Main pulley (first rotating member), 133 Collar, 135 Plate (support member), 137 Pulley (second rotating member), 139 Lower belt (belt), 141, 143 Fastening member, 153 Plate (guide support member), 155 Pulley (rotating member for belt), 156 Upper belt (guide belt), 157 Servo motor (guide drive source), 159 Air cylinder (moving device, fluid pressure cylinder), 163 Plate (upper support frame), 165 Bracket (guide support member), 167 Separation position, 168 Contact position, 169 Stopper, 202 Non-crush roll (guide rotating member), 207 Servo motor (drive source), CN1 Connection part, GS Adhesive part (bonded part), P1 First panel (folded panel), P2 Second panel (non-folded panel), P3 Third panel (non-folded panel), P4 Fourth panel (folded panel), PD Conveying direction, SS Corrugated cardboard sheet.

Claims

1. A gluing device for applying adhesive to the part of a corrugated cardboard sheet to be bonded, The aforementioned corrugated cardboard sheet is The adhesive is applied to the portion to be bonded, and the panel has a bendable panel that is bent relative to a non-bendable panel. The portion to be bonded is, Provided on the aforementioned folding panel, The aforementioned folding panel is The connection part is connected, The aforementioned connection part is The non-foldable panel and the foldable panel are connected, The gluer is, A first conveying device that contacts the non-folding panel and conveys the non-folding panel in the conveying direction, A coating device that contacts the part to be bonded and applies the adhesive, When the coating device and the part to be bonded come into contact, a second conveying device comes into contact with the bent panel and conveys the bent panel in the conveying direction, A guide device is positioned opposite the second conveying device in the vertical direction, and the folded panel is sandwiched between the second conveying device and the guide device, which guides the folded panel in the conveying direction. Equipped with, The aforementioned guide device, Guide support member, Multiple belt rotating members are rotatably attached to the aforementioned guide support member, A guide belt wound around multiple rotating members for the belt, A moving device that positions the guide belt at a contact position that contacts the folded panel and at a separation position that is separated from the folded panel, A gluing device having the following features.

2. A gluing device for applying adhesive to the part of a corrugated cardboard sheet to be bonded, The aforementioned corrugated cardboard sheet is The adhesive is applied to the portion to be bonded, and the panel has a bendable panel that is bent relative to a non-bendable panel. The portion to be bonded is, Provided on the aforementioned folding panel, The aforementioned folding panel is The connection part is connected, The aforementioned connection part is The non-foldable panel and the foldable panel are connected, The gluer is, A first conveying device that contacts the non-folding panel and conveys the non-folding panel in the conveying direction, A coating device that contacts the part to be bonded and applies the adhesive, When the coating device and the part to be bonded come into contact, a second conveying device comes into contact with the bent panel and conveys the bent panel in the conveying direction, A guide device is positioned opposite the second conveying device in the vertical direction, and the folded panel is sandwiched between the second conveying device and the guide device, which guides the folded panel in the conveying direction. Equipped with, The aforementioned guide device, Guide support member, A rotating guide member is rotatably attached to the aforementioned guide support member, A moving device for moving the guide support member between a contact position where the guide rotating member is in contact with the bent panel and a separated position where the bent panel and the guide rotating member are separated, A gluing device having the following features.

3. The first transport device is The lower surface of the non-folding panel is brought into contact with the non-folding panel, and the non-folding panel is transported in the transport direction at a first speed. The second transport device is The gluing device according to claim 1 or 2, which is positioned opposite to the coating device in a width direction parallel to the plane of the non-folded panel and perpendicular to the conveying direction, and conveys the folded panel in the conveying direction at the same speed as the first speed.

4. The second transport device is A first rotating member that rotates in response to the drive of a drive source, A support member attached to the support frame of the gluer, A second rotating member is rotatably attached to the support member, A belt that is wound around the first rotating member and the second rotating member, contacts the lower surface of the folded panel, and rotates based on the drive of the drive source to convey the folded panel in the conveying direction, A gluing apparatus according to claim 1 or claim 2, having the following features.

5. The first transport device is The aforementioned drive source, A rotating member for driving that rotates based on the drive of the aforementioned drive source, A drive belt is wound around the aforementioned rotating drive member, contacts the lower surface of the non-folding panel, and rotates based on the drive of the drive source to transport the non-folding panel in the transport direction. It has, The first rotating member is The gluing device according to claim 4, which is connected to the aforementioned driving rotating member and rotates integrally with the aforementioned driving rotating member.

6. The second transport device is Having the aforementioned drive source, The aforementioned drive source is The coating device is mounted on a frame for a coating device, The second transport device is, The gluing device according to claim 4, wherein, in a width direction parallel to the plane of the non-folded panel and perpendicular to the conveying direction, the device contacts the portion of the folded panel near the portion to be bonded and conveys the folded panel in the conveying direction.

7. The aforementioned guide device, It has a guide drive source that rotates the guide belt, The aforementioned guide drive source is, The gluing device according to claim 1, wherein the second conveying device rotates the guide belt at the same speed as the second conveying device conveys the bent panel in the conveying direction.

8. The aforementioned guide device, Arranged above the second conveying device, The aforementioned mobile device is The guide support member has a fluid pressure cylinder that biases it upward so as to move it away from the second conveying device. The aforementioned fluid pressure cylinder is When the first fluid pressure is supplied, the guide support member is moved to the separated position. The gluing device according to claim 1 or claim 2, wherein when a second fluid pressure less than the first fluid pressure is supplied, the guide support member is positioned at the contact position, and the guide support member is biased upward with a biasing force that cancels out the force applied from the guide device to the bending panel by the weight of the guide device.

9. The gluer is, Above the second conveying device, there is an upper support frame that supports the guide device, The aforementioned guide device, Guide support member, Multiple belt rotating members are rotatably attached to the aforementioned guide support member, A guide belt wound around multiple rotating members for the belt, A moving device for moving the guide support member between a separated position where the guide belt is separated from the folding panel and a contact position below the separated position where the guide belt is in contact with the folding panel, The gluing device according to claim 1 or claim 2, further comprising: a stopper attached to the upper support frame for restricting the downward movement of the guide support member.

10. The gluer is, Above the second conveying device, there is an upper support frame that supports the guide device, The aforementioned guide device, Guide support member, A rotating guide member is rotatably attached to the aforementioned guide support member, A moving device for moving the guide support member to a separated position where the guide rotating member is separated from the folding panel, and a contact position below the separated position where the guide rotating member is in contact with the folding panel, The gluing device according to claim 1 or claim 2, further comprising: a stopper attached to the upper support frame for restricting the downward movement of the guide support member.

11. The aforementioned corrugated cardboard sheet is Panel 1 and, A second panel connected to the first panel, A third panel connected to the second panel, A fourth panel connected to the third panel, It has, The aforementioned folding panel is The first panel or the fourth panel, The aforementioned non-folding panel is The gluing apparatus according to claim 1 or claim 2, wherein the second panel or the third panel.

12. A gluing device for applying adhesive to the part of a corrugated cardboard sheet to be bonded, The aforementioned corrugated cardboard sheet is The adhesive is applied to the portion to be bonded, and the panel has a bendable panel that is bent relative to a non-bendable panel. The portion to be bonded is, Provided on the aforementioned folding panel, The aforementioned folding panel is The connection part is connected, The aforementioned connection part is The non-foldable panel and the foldable panel are connected, The gluer is, A first conveying device that contacts the non-folding panel and conveys the non-folding panel in the conveying direction, A coating device that contacts the part to be bonded and applies the adhesive, When the coating device and the part to be bonded come into contact, a second conveying device comes into contact with the bent panel and conveys the bent panel in the conveying direction, Equipped with, The second transport device is, A first rotating member that rotates in response to the drive of a drive source, A support member attached to the support frame of the gluer, A second rotating member is rotatably attached to the support member, A belt that is wound around the first rotating member and the second rotating member, contacts the lower surface of the folded panel, and rotates based on the drive of the drive source to convey the folded panel in the conveying direction, It has, The first transport device is The aforementioned drive source, A rotating member for driving that rotates based on the drive of the aforementioned drive source, A drive belt is wound around the aforementioned rotating drive member, contacts the lower surface of the non-folding panel, and rotates based on the drive of the drive source to transport the non-folding panel in the transport direction. It has, The first rotating member is It is connected to the aforementioned driving rotating member and rotates integrally with the aforementioned driving rotating member, The second transport device is, A collar is disposed between the first rotating member and the driving rotating member in the axial direction of the rotation axis of the first rotating member, A fastening member for fixing the first rotating member to the driving rotating member, It has, The aforementioned connection part is A gluing device that is transported in the transport direction above the aforementioned color.

13. A conveying assist device for a gluing device that can be attached to a gluing device that applies adhesive to the part of a corrugated cardboard sheet to be bonded, The aforementioned corrugated cardboard sheet is The adhesive is applied to the portion to be bonded, and the panel has a bendable panel that is bent relative to a non-bendable panel. The portion to be bonded is, Provided on the aforementioned folding panel, The aforementioned folding panel is The connection part is connected, The aforementioned connection part is The non-foldable panel and the foldable panel are connected, The gluer is, A first conveying device that contacts the non-folding panel and conveys the non-folding panel in the conveying direction, A coating device that contacts the part to be bonded and applies the adhesive, Equipped with, The aforementioned transport assist device is When attached to the gluing device, at the time of contact between the coating device and the part to be bonded, the device contacts the bent panel and conveys the bent panel in the conveying direction. The gluer is, The system further includes a guide device positioned opposite the transport assist device in the vertical direction, which sandwiches the folding panel between itself and the transport assist device and guides the folding panel in the transport direction. The aforementioned guide device, Guide support member, Multiple belt rotating members are rotatably attached to the aforementioned guide support member, A guide belt wound around multiple rotating members for the belt, A moving device that positions the guide belt at a contact position that contacts the folded panel and at a separation position that is separated from the folded panel, A conveying assist device for a gluing machine, having the following features.

14. A conveying assist device for a gluing device that can be attached to a gluing device for applying adhesive to the part of a corrugated cardboard sheet to be bonded, The aforementioned corrugated cardboard sheet is The adhesive is applied to the portion to be bonded, and the panel has a bendable panel that is bent relative to a non-bendable panel. The portion to be bonded is, Provided on the aforementioned folding panel, The aforementioned folding panel is The connection part is connected, The aforementioned connection part is The non-foldable panel and the foldable panel are connected, The gluer is, A first conveying device that contacts the non-folding panel and conveys the non-folding panel in the conveying direction, A coating device that contacts the part to be bonded and applies the adhesive, Equipped with, The aforementioned transport assist device is When attached to the gluing device, at the time of contact between the coating device and the part to be bonded, the device contacts the bent panel and conveys the bent panel in the conveying direction. The gluer is, The system further includes a guide device positioned opposite the transport assist device in the vertical direction, which sandwiches the folding panel between itself and the transport assist device and guides the folding panel in the transport direction. The aforementioned guide device, Guide support member, A rotating guide member is rotatably attached to the aforementioned guide support member, A moving device for moving the guide support member between a contact position where the guide rotating member is in contact with the bent panel and a separated position where the bent panel and the guide rotating member are separated, A conveying assist device for a gluing machine, having the following features.

15. A conveying assist device for a gluing device that can be attached to a gluing device for applying adhesive to the part of a corrugated cardboard sheet to be bonded, The aforementioned corrugated cardboard sheet is The adhesive is applied to the portion to be bonded, and the panel has a bendable panel that is bent relative to a non-bendable panel. The portion to be bonded is, Provided on the aforementioned folding panel, The aforementioned folding panel is The connection part is connected, The aforementioned connection part is The non-foldable panel and the foldable panel are connected, The gluer is, A first conveying device that contacts the non-folding panel and conveys the non-folding panel in the conveying direction, A coating device that contacts the part to be bonded and applies the adhesive, Equipped with, The aforementioned transport assist device is When attached to the gluing device, at the time of contact between the coating device and the part to be bonded, the device contacts the bent panel and conveys the bent panel in the conveying direction. A first rotating member that rotates in response to the drive of a drive source, A support member attached to the support frame of the gluer, A second rotating member is rotatably attached to the support member, A belt that is wound around the first rotating member and the second rotating member, contacts the lower surface of the folded panel, and rotates based on the drive of the drive source to convey the folded panel in the conveying direction, It has, The first transport device is The aforementioned drive source, A rotating member for driving that rotates based on the drive of the aforementioned drive source, A drive belt is wound around the aforementioned rotating drive member, contacts the lower surface of the non-folding panel, and rotates based on the drive of the drive source to transport the non-folding panel in the transport direction. It has, The first rotating member is It is connected to the aforementioned driving rotating member and rotates integrally with the aforementioned driving rotating member, The aforementioned transport assist device is A collar is disposed between the first rotating member and the driving rotating member in the axial direction of the rotation axis of the first rotating member, A fastening member for fixing the first rotating member to the driving rotating member, It has, The aforementioned connection part is A conveying assist device for a gluing device, which is conveyed in the conveying direction above the aforementioned collar.

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