JP6630926B2 - Adhesive application device, adhesive processing device, and adhesive application method - Google Patents

Description

The present invention relates to an adhesive application device, an adhesive processing device, and an adhesive application method.

As a conventional example, Patent Literature 1 below describes a method of applying an adhesive by discharging the adhesive toward an application target using a spray head. In this method, it is disclosed to carry out a washing step in which a solvent for the adhesive is added to the spray air for at least a short time.

JP-A-6-198229

In the method for applying an adhesive described in Patent Document 1, the solvent is discharged together with the spray air, so that it is possible to form an adhesive surface having a certain clear boundary. However, there is a problem that the inside of the apparatus is stained by an adhesive discharged from the spray head but not applied to the application target.

The present invention has been made in view of the above problems, and is an adhesive application apparatus, an adhesion processing apparatus, and an adhesive application method capable of suppressing the inside of the apparatus from being stained by an adhesive that has not been applied to an application object. The purpose is to provide.

In order to solve the above problems, the adhesive application device according to the present invention is provided with a nozzle that discharges an adhesive toward an object to which the adhesive is to be applied, and is discharged from the nozzle and is not applied to the application object. A receiving member for receiving and collecting the adhesive, the receiving member is provided with a belt running around and a pair of belt rollers having a rotating shaft extending around the belt in a vertical direction and discharged from the nozzle. The adhesive that has not been applied to the application target is received and collected on the inner peripheral surface of the belt .

Further, the adhesive application device according to the present invention includes a cleaning unit that supplies a cleaning liquid to the inside of the main body of the nozzle and cleans the adhesive adhered to the inside of the main body. Receiving and collecting the liquid including the used cleaning liquid used for cleaning the inside of the main body.

Further, in the above configuration, a switching means for switching between an adhesive inflow path through which an adhesive flows into the nozzle and a cleaning liquid inflow path through which the cleaning liquid flows into the nozzle is provided.

Further, the adhesive application device according to the present invention includes a guide portion for guiding the adhesive received by the receiving member into the collection container , wherein the receiving member is provided with a belt that runs around the belt, and the guide portion includes the belt. A scraping member for scraping off the adhesive adhering to the inner peripheral surface and leading to the collection container was provided.

In the above configuration, the scraping member scrapes the adhesive adhered to the inner peripheral surface of the belt.

The adhesive processing device according to the present invention includes an adhesive application device having the above-described configurations, a folded portion that folds the sheet material such that the adhesive application surface of the sheet material is on the inside, and an adhesive applied to the adhesive application surface. And a pressing portion that presses the folded sheet material to bond the sheet material with an agent.

The method for applying an adhesive according to the present invention includes discharging an adhesive from a nozzle toward an object to which the adhesive is to be applied, and receiving the adhesive discharged from the nozzle and not applied to the object to be applied by a receiving member. After the application of the adhesive to the object to be applied, a cleaning liquid is supplied to the inside of the main body of the nozzle, the adhesive adhered to the inside of the main body is washed, and the inside of the main body discharged from the main body is washed. The liquid including the used used cleaning liquid is received by the receiving member.

Then, before Ki構 formed, an adhesive received in the receiving member, is recovered into the recovery container.

According to the present invention, a nozzle for discharging the adhesive is provided toward the object to which the adhesive is to be applied, and a receiving member which receives and collects the adhesive which is discharged from the nozzle and is not applied to the object to be coated is provided , The receiving member is provided with a belt running around and a pair of belt rollers having a rotation axis passing the belt in a vertical direction, the adhesive discharged from the nozzle and not applied to the application target. Since the receiving and collecting is performed on the inner peripheral surface of the belt, the adhesive that has not been applied to the application target can be received by the inner peripheral surface of the belt, and the inside of the device can be received by the adhesive that has not been applied to the application target. Stain can be suppressed.

Further, the cleaning liquid is supplied to the body of the Roh nozzle, wherein comprises a cleaning unit for cleaning the adhesive adhering to the inner body, wherein the receiving member is added to the adhesive, spent used to clean the inside of the body Since the liquid containing the cleaning liquid is received and collected , the inside of the nozzle body can be cleaned with the cleaning liquid, the adhesive inside the nozzle body can be hardly clogged, and the liquid containing the used cleaning liquid is received by the receiving member. be able to.

In the case where a switching means for switching between an adhesive inflow path for flowing the adhesive into the nozzle and a cleaning liquid inflow path for flowing the cleaning liquid into the nozzle is provided, the switching means easily makes the adhesive inflow path and the cleaning liquid inflow path easily. You can switch.

In a further, the adhesive is accepted stop member received, with a guide portion for guiding the recovery container, receiving member, the belt is provided with a circulating traveling guide section is attached to the belt inner peripheral surface adhesion Since the scraping member that scrapes the agent and guides the adhesive to the collection container is provided, the adhesive received by the orbiting belt can be easily scraped by the scraping member.

Since the bonding device includes the adhesive application device of each of the above-described configurations, the object to be coated is properly folded and the bonding process is performed while suppressing the inside of the device from being stained by the adhesive not applied to the object to be coated. It is possible.

The method for applying an adhesive according to the present invention includes discharging an adhesive from a nozzle toward an object to which the adhesive is to be applied, receiving the adhesive which has been discharged from the nozzle and has not been applied to the object to be applied, by a receiving member. After collecting and applying the adhesive to the object to be coated, a cleaning liquid is supplied to the inside of the main body of the nozzle, the adhesive adhered to the inside of the main body is washed, and used for cleaning the inside of the main body discharged from the main body. The received liquid containing the used cleaning liquid is received by the receiving member, so that the inside of the nozzle body can be cleaned with the cleaning liquid, the adhesive inside the nozzle body can be hardly clogged, and the used cleaning liquid is included. The liquid can be received by the receiving member.

Further, when the adhesive received by the receiving member is collected in the collecting container, the adhesive inside the device can be prevented from being stained by collecting the adhesive received by the receiving member.

It is a longitudinal section showing the schematic structure of the adhesion processing device provided with the adhesive application device concerning one embodiment of the present invention. It is a figure which expands and shows the schematic plan view of the said adhesive application apparatus. FIG. 3 is a side view of FIG. 2. It is a partial expanded sectional view of a nozzle of an adhesive application device. It is a flowchart of an adhesion processing apparatus. It is a flowchart of an adhesion processing apparatus. It is a figure showing operation of an adhesion processing device. It is a flowchart of an adhesion processing apparatus. It is a figure showing operation of cleaning processing of an adhesion processing device.

Hereinafter, an adhesive processing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a schematic configuration of an adhesive processing device 10 provided with an adhesive application device according to one embodiment of the present invention. The bonding apparatus 10 includes a paper feeding unit 20, a first processing unit 16, a second processing unit 17, a third processing unit 18, a paper discharging unit 15, and a control unit 9. The paper supply unit 20 supplies the sheet material S. The first processing unit 16 forms the folding line 14 on the sheet material S and cuts the sheet material S in the width direction W orthogonal to the transport direction F. The second processing unit 17 includes an adhesive application unit 34 provided with a nozzle 50 for discharging the adhesive toward the sheet material S, and the sheet material S such that the adhesive application surface of the sheet material S is on the inside. And a folding part 35 for folding. The third processing unit 18 includes a pressing unit 36 that presses the folded sheet material S to bond the sheet material S with the adhesive applied to the adhesive application surface.

Next, the configuration of each part of the device will be described. The paper supply unit 20 includes a paper supply table 22 on which guide plates (not shown) are provided upright on the left and right sides in a width direction W orthogonal to the conveyance direction F of the sheet material S to which the adhesive is applied, and a paper supply roller 26. Is provided. The paper feed table 22 is configured to be able to move up and down freely.

The first processing unit 16 includes a transport roller 32, a perforation forming unit 21, and a cutting unit 19. The transport rollers 32 are provided as a pair facing up and down via the transport surface of the sheet material S. A plurality of transport rollers 32 are provided at predetermined intervals along the transport direction F, and transport the sheet material S.

The perforation forming part 21 includes a rotary perforation blade 24. The rotation shaft 25 of the sewing blade 24 extends in a direction perpendicular to the conveying direction F of the sheet material S. The cutting edge of the sewing machine blade 24 projects downward from above the conveying surface of the sheet material S beyond the conveying surface of the sheet material S, and rotates in synchronization with a conveying roller 32 that conveys the sheet material S.

The cutting portion 19 includes a pair of upper and lower cutting blades 27 extending in the width direction W. The lower cutting blade 27 is constituted by a fixed blade 28 fixed to the apparatus main body 1. The upper cutting blade 27 is configured as a movable blade 29 which can be moved up and down by a lifting means (not shown).

Although not shown, the transport roller 32 and the rotating shaft 25 of the sewing blade 24 are connected to a first motor via a power transmission mechanism. The upper cutting blade 27 is selectively and independently driven according to the transport position of the sheet material S.

The adhesive application section 34 constitutes an adhesive application device. The adhesive application section 34 includes a transport section 38 and an adhesive discharge section 39. The transport section 38 includes a transport belt 41 that transports the sheet material S and a pressing roller 42. The transport belt 41 is installed below the transport surface of the sheet material S. A plurality of transport belts 41 are arranged in the width direction W of the sheet material S. The transport belt 41 is wound around a plurality of belt rollers 43 and travels around in the transport direction F. The pressing roller 42 is installed above the conveying surface of the sheet material S so as to face the upper surface of the conveying belt 41, and one of the two pieces U and G of the sheet material S to which the adhesive is not applied, Hold the upper surface of U. The pressing roller 42 rotates following the upper surface of the transport belt 41 and the upper surface of one of the folded pieces U of the sheet material S. Although not shown, the rotation shaft of the belt roller 43 is connected to a second motor via a power transmission mechanism.

FIG. 2 shows an enlarged schematic plan view of the adhesive application device. FIG. 3 is a side view of FIG. 2 and shows a part of the view taken along the line AA in FIG. The adhesive discharge section 39 includes a nozzle 50, an adhesive supply section 46, an air supply section 47, a cleaning section 51, a recovery section 52, and a suction section 48. FIG. 4 is a partially enlarged sectional view of the nozzle 50. The nozzle 50 discharges the adhesive toward the sheet material S transported by the transport unit 38. An adhesive supply port 58 is provided at one end of the main body 53 of the nozzle 50 shown in the upper part of FIG. The other end of the main body 53 of the nozzle 50 shown in the lower part of FIG. 4 is provided with an adhesive discharge port 61 having the smallest inner diameter. It is preferable that the shape of the discharge port 61 is such that the discharge port 61 can be uniformly and linearly applied in the width direction W of the sheet material S to be applied.

An adhesive flow path 71 and a mixing flow path 72 are provided between the adhesive supply port 58 and the discharge port 61 in the main body 53. The adhesive flow path 71 and the mixing flow path 72 are linearly provided on the upstream and downstream sides of the flow path of the adhesive along the axial direction of the main body 53 of the nozzle 50. The adhesive supplied from the adhesive supply port 58 flows through the adhesive channel 71. In the vicinity of the mixing channel 72 at the downstream end of the adhesive channel 71, the inner diameter is formed slightly smaller. In the adhesive flow path 71, a closing member 70 for closing a lower portion of the adhesive flow path 71 is installed so as to be vertically movable. When the adhesive is not discharged from the discharge port 61, the closing member 70 is located at the lowest position as shown by a solid line in FIG. The closing member 70 closes the lowermost part of the adhesive flow path 71 so that the adhesive does not flow from the adhesive flow path 71 to the lower mixing flow path 72. Then, as shown by a two-dot chain line, the closing member 70 is moved upward at a predetermined timing by a moving means (not shown in FIG. 4) to open the lowermost part of the adhesive flow path 71, and from the lower part in FIG. The adhesive flows into the mixing channel 72. In the mixing channel 72, the adhesive flowing out of the adhesive channel 71 and the air flowing out of the air channel 73 are mixed.

Nozzle 50
Inside the main body 53, an air flow path 73 shown on the left side of the adhesive flow path 71 and a cleaning liquid flow path 74 shown on the right side of the adhesive flow path 71 in FIG. The lower ends of the air flow path 73 and the cleaning liquid flow path 74 on the downstream side in the flow direction of the air and the cleaning liquid communicate with the mixing flow path 72, respectively. An air supply port 76 is formed at the upper end, which is the upstream end of the air passage 73. The air supply port 76 is connected to the air tube 64. A cleaning liquid supply port 81 is formed at the upper end, which is the upstream end of the cleaning liquid flow path 74. The cleaning liquid supply port 81 is connected to a cleaning liquid tube 79.

The adhesive supply section 46 shown in FIGS. 2 and 3 includes an adhesive tank 54, an adhesive tube 55, an adhesive valve 56, and a pressurizing tube 57. The adhesive supply section 46 supplies the adhesive in the adhesive tank 54 to the nozzle 50 by an adhesive tube 55 connected to an adhesive supply port 58 of the nozzle 50. The adhesive tank 54 stores the adhesive inside. The adhesive tube 55 is connected to a lower portion of the adhesive tank 54. A pressurizing tube 57 is connected to the upper part of the adhesive tank 54, and air at a predetermined pressure is supplied from the compressor 63. The upper part of the adhesive tank 54 is pressurized by compressed air from the compressor 63. Thus, the adhesive in the adhesive tank 54 is supplied to the nozzle 50 when the adhesive valve 56 is opened. At a position near the nozzle 50 of the adhesive tube 55, an electromagnetic adhesive valve 56 constituted by a check valve is installed.

The adhesive used in the present embodiment can be discharged from the discharge port 61 of the nozzle 50 toward the sheet material S. After the adhesive is applied, the sheet material S is folded and pressed at a predetermined pressure. That can adhere to the inner surface of the substrate are used. Furthermore, as the adhesive, a weakly tacky adhesive that can be manually peeled off the adhesive surface is preferably used. As the adhesive, a liquid, gel, cream, powder, or the like can be used. As the adhesive, a solvent system such as polyurethane, an aqueous system such as starch or water glass, or an emulsion system such as polyvinyl acetate, polyacrylic acid ester, and various rubbers can be used. When the pressing portion 36 has a heating means, a hot-melt adhesive can be used. As the hot-melt adhesive, for example, vinyl acetate, polyethylene, various wax-based, rosin-based vinyl resin-based, vinyl acetate-acrylic resin-based, acrylic resin-based, SBR rubber-based ethylene-vinyl acetate resin-based and the like can be used. it can.

The air supply unit 47 supplies air to the inside of the main body 53 of the nozzle 50 so that the adhesive is discharged from the discharge port 61 of the nozzle 50 at a predetermined pressure. Further, the air supply unit 47 supplies compressed air to the adhesive tank 54 and the cleaning liquid tank 78. The air supply unit 47 includes a compressor 63, a tube 64 for air, and a valve 65 for air. The tip of the air tube 64 is connected to an air supply port 66 provided in the main body 53 of the nozzle 50. The air valve 65 is configured by an electromagnetic check valve, and is installed at a position near the nozzle 50. The other end of the pressurizing tube 57, one end of which is connected to the adhesive tank 54, and the other end of the pressurizing tube 77, which is connected to the cleaning liquid tank 78, are connected to the compressor 63.

The cleaning unit 51 supplies a cleaning liquid to the inside of the main body 53 of the nozzle 50, and cleans the adhesive adhered to the inside of the main body 53. The cleaning unit 51 includes a cleaning liquid tank 78, a cleaning liquid tube 79, a cleaning liquid valve 80, and a pressurizing tube 77. The cleaning liquid tank 78 stores a cleaning liquid for cleaning the inside of the nozzle 50. As the cleaning liquid, a liquid containing water, a solvent, a cleaning agent, or the like can be used, and it is preferable to use a liquid that can easily dissolve the adhesive.

The upper part of the cleaning liquid tank 78 is connected to the compressor 63 by a pressurizing tube 77. Then, compressed air is sent from the compressor 63. At a position near the nozzle 50 of the cleaning liquid tube 79, an electromagnetic cleaning liquid valve 80 constituted by a check valve is installed. The cleaning liquid stored in the cleaning liquid tank 78 is supplied to the cleaning liquid supply port 81 at a predetermined pressure by opening the cleaning liquid valve 80.

The recovery unit 52 receives and recovers the adhesive, which is discharged from the nozzle 50 and is not applied to the sheet material S as the application target, and the liquid including the used cleaning liquid that has cleaned the inside of the main body 53 of the nozzle 50. The collection section 52 includes a receiving member 75 and a guide section 82. The receiving member 75 receives and collects the adhesive discharged from the nozzle 50 and not applied to the application target, and further receives the liquid containing the used cleaning liquid used for cleaning the inside of the main body 53 in addition to the adhesive. to recover.

The receiving member 75 includes a support member 84, a belt 86 traveling around and a receiving plate 85. The support member 84 includes a support 117, a side belt support 118, and a bottom belt support 119. The support member 84 supports the receiving plate 85 and the belt 86. The support member 84 is configured to be detachable from the apparatus main body 1. By taking out the support member 84 from the apparatus main body 1, the entire mechanism constituting the receiving member 75 can be removed from the apparatus main body 1. Thus, cleaning and replacement of the receiving plate 85 and the belt 86 can be easily performed.

The support 117 is made of a plate having a predetermined thickness. Both the side belt support 118 and the bottom belt support 119 are erected on the support 117. The side belt support 118 rotatably supports the side belt 88. The bottom belt support portion 119 rotatably supports the bottom belt 89.

The belt 86 runs around by driving of the belt driving unit 87. The belt 86 is preferably formed of natural fibers, synthetic fibers, natural resins, synthetic resins, and the like. The belt 86 preferably has a material capable of easily peeling off the adhesive, and is preferably formed of a non-adhesive material such as a silicon-based or fluorine-based synthetic fiber or resin. The belt 86 includes a side belt 88 and a bottom belt 89. The side belt 88 is provided below the discharge port 61 of the nozzle 50. The side belt 88 is stretched over a pair of left and right side belt rollers 129. The side belt roller 129 has the rotation shaft 131 in the vertical direction, and is installed at a predetermined distance in the width direction W of the sheet material S. The rotation shaft 131 of the side belt roller 129 is rotatably supported by the side belt support 118. The distance between the pair of side belt rollers 129 is about half to two thirds of the length in the width direction W of the sheet material S to be folded by the main bonding apparatus 10. A side belt roller 129 shown on the left side in FIG. 2 is connected to the side belt driving unit 125 via a connection belt 127. The side belt driving section 125 constitutes the belt driving section 87.

The bottom belt 89 is installed below the side belt 88. A transport surface of the sheet material S is formed between the side belt 88 and the bottom belt 89. The bottom belt 89 receives the liquid containing the adhesive and the cleaning liquid discharged from the main body 53 of the nozzle 50 and scattered downward, and receives the liquid containing the adhesive and the cleaning liquid dropped from the lower edge of the side belt 88 downward. . The bottom belt 89 is formed to be longer by a predetermined amount in both the transport direction F and the width direction W of the sheet material S than immediately below the installation position of the side belt 88 that travels in a plan view. Thus, the adhesive or the cleaning liquid scraped directly from the side belt 88 or by the scraping member 121 and moved downward can be received.

The bottom belt 89 is wound around a pair of left and right bottom belt rollers 130. The bottom belt roller 130 has a rotation shaft 132 in a horizontal direction, and is installed at a predetermined distance in the width direction W of the sheet material S. The rotation shaft 132 of the bottom belt roller 130 is rotatably supported by a bottom belt support 119. The distance between the pair of bottom belt rollers 130 is about half to three quarters of the length in the width direction W of the sheet material S to be folded by the main bonding apparatus 10. The bottom belt roller 130 shown on the left side in FIG. 2 is connected to the bottom belt driving unit 126 via a connection belt 128. The bottom belt driving section 126 constitutes the belt driving section 87.

The side belt 88 and the bottom belt 89 are formed from one side plate 59 of a pair of side plates that partially support the rotation shaft of the belt roller 43 that constitutes the conveying unit 38 of the adhesive application unit 34 on the left side in FIG. It protrudes outward.

The guide section 82 guides the liquid containing the adhesive and the used cleaning liquid received by the receiving member 75 into the collection container 83. The guide section 82 includes a scraping member 121. The scraping member 121 scrapes the liquid including the used cleaning liquid attached to the belt 86 and guides the liquid to the collection container 83. The scraping member 121 includes a side belt scraping member 123 and a bottom belt scraping member 134.

The side belt scraping member 123 is erected near the one side belt roller 129 shown on the left side in FIG. 2 and at the center of the conveying surface of the sheet material S in the width direction W. The side belt scraping member 123 is formed of a synthetic resin plate member extending in the vertical direction. One side in the thickness direction of the plate member is in contact with a predetermined location, which is a scraping location on the inner surface of the side belt 88, with a predetermined pressing force.

The bottom belt scraping member 134 is erected so as to come into contact with a predetermined location, which is a scraping location of the bottom belt 89 traveling below, with a predetermined pressing force from below. The bottom belt scraping member 134 is received by the bottom belt 89, scrapes the cleaning liquid transferred from the inside to the outside of the side plate 59 by the running bottom belt 89, and guides the cleaning solution to the collection container 83 installed below. .

The receiving plate 85 is provided upright on the upper portion of the side belt supporting portion 118. The receiving plate 85 is installed on the front and rear sides of the installation position of the main body 53 of the nozzle 50. The receiving plate 85 can be made of a flexible transparent synthetic resin or the like. The suction unit 48 is provided on the other side plate 60 of the pair of side plates that support the rotation shaft of the belt roller 43. The suction unit 48 includes a filter 49, a suction fan 62, and a dust bag (not shown). The filter 49 is installed so as to close the window 67 provided on the side plate 60. The suction fan 62 is installed outside the position where the window 67 is formed on the side plate 60. The dust bag collects the air that has passed through the filter 49 and that has been sucked outside the side plate 60.

The folding section 35 folds the sheet material S such that the adhesive-coated surface of the sheet material S faces inside. The folding section 35 includes a transport section 92, a folding guide 93, and a folding rod 94. The transport section 92 includes a suction conveyor belt 95, a suction fan 96, and a pressing roller 97. The suction conveyor belt 95 is stretched over a plurality of belt rollers 99 and runs around in the transport direction F. The suction conveyor belts 95 are arranged in a plurality of rows below one of the fold pieces U, which are positioned below when folded in the width direction W. A plurality of pressing rollers 97 are arranged above the suction conveyor belt 95 so as to press the upper surface of the sheet material S conveyed on the suction conveyor belt 95. The press roller 97 rotates in contact with the suction conveyor belt 95 and the upper surface of the sheet material S conveyed on the suction conveyor belt 95. The suction conveyor belt 95 is connected to and driven by a third motor via a power transmission mechanism (not shown).

The folding guide 93 folds the sheet material S by transporting a perforation of the sheet material S along the folding guide 93. The folding guide 93 is provided upright at a position corresponding to the transport position of the folding line 14. The sheet material S is transported along the folding line 93 along the folding guide 93. When the folding bar 94 conveys the other fold U by the suction conveyor belt 95 along the fold line 93 along the fold guide 93, one fold G of the sheet S is gradually moved from the conveyance surface of the sheet S. Lift and fold at the perforated fold line 14. The sheet material S is folded in two along the transport direction F by being overlapped on one of the folded pieces G on the other folded piece U on the suction conveyor belt 95. A plurality of folding rods 94 are provided along the conveying direction F of the sheet material S, and the inclination angle of each folding rod 94 from the horizontal plane is adjusted so that the sheet material S can be appropriately folded from the upstream side to the downstream side in the conveying direction F of the sheet member S. Different.

The pressing portion 36 presses the folded sheet material to bond the sheet material S with the adhesive applied to the adhesive applied surface. The pressing unit 36 includes a transport unit 102 and a press roller 105. The transport unit 102 includes a plurality of upper and lower pairs of transport rollers 103 installed along the transport direction F of the sheet material S. The press roller 105 is installed in a pair at the upper and lower sides in the transport direction F of the sheet material S from the installation position of the transport roller 103, and presses the folded sheet material S with a predetermined pressure. The material of the press roller 105 is preferably metal in view of strength and durability, and more preferably iron. A small gap is provided between the upper and lower press rollers 105 when the folded sheet material S is not sandwiched. When the sheet material S is nipped, the upper press roller 105 is urged toward the opposing lower press roller 105 by an urging member (not shown). Thus, the sheet material S is pressed with a pressing force according to the thickness. The transport unit 102 and the press roller 105 are connected to a fourth motor via a power transmission mechanism (not shown), and are rotated synchronously by driving the fourth motor.

The paper discharge unit 15 has a belt conveyor 108, and the bonded folded sheet material S is stacked on the stacker 109 in an upright state and can be collected. The belt conveyor 108 is stretched over a plurality of belt rollers 110. One belt roller 110 is connected to a fifth motor via a power transmission mechanism (not shown).

At a plurality of locations on the conveyance path of the sheet material S, first to fifth detection units 111 to 115 for detecting the passage of the sheet material S, that is, the passage of the front end and the rear end of the sheet material S are installed. The first detection unit 111 is provided between the paper feeding unit 20 and the first processing unit 16. The second detection unit 112 is installed near the nozzle 50 and upstream of the nozzle 50 installation position by a predetermined amount. The third detection unit 113 is provided between the adhesive application unit 34 and the folding unit 35. The fourth detection section 114 is provided between the folding section 35 and the pressing section 36. The fifth detection unit 115 is provided between the pressing unit 36 and the paper discharge unit 15. In one embodiment of the first to fifth detection units 111 to 115, both sensors are transmissive optical sensors, but other types of sensors, for example, thickness sensors can also be used.

The control unit 9 controls the operation of the entire bonding apparatus 10. The control unit 9 receives the detection signals from the first to fifth detection units 111 to 115 and drives necessary driving units at a predetermined timing. Then, the control unit 9 performs various processing processes of forming the folding line 14 on the sheet material S, cutting, applying an adhesive, folding, and pressing. The control unit 9 switches between an adhesive inflow path through which the adhesive flows into the nozzle 50 and a cleaning liquid inflow path through which the cleaning liquid flows into the nozzle 50. The adhesive inflow path includes an adhesive tube 55 and an adhesive valve 56 provided at an intermediate position of the adhesive tube 55. The cleaning liquid flow path includes a cleaning liquid tube 79 and the cleaning liquid valve 80. The control unit constitutes switching means for switching between the adhesive inflow path and the cleaning liquid inflow path by opening and closing the adhesive valve 56 and the cleaning liquid valve 80 at a predetermined timing. In the present embodiment, when the adhesive is applied, the switching unit opens the adhesive valve 56, closes the cleaning liquid valve 804, and when cleaning the nozzle 50 with the cleaning liquid, the switching means is used. The control unit 9 performs a switching operation of closing the valve 56 and opening the cleaning liquid valve 804.

Next, an outline of the operation of the bonding apparatus 10 will be described with reference to the flowchart of FIG. In the bonding processing apparatus 10, the sheet material S to be coated with the adhesive is subjected to bonding processing by applying, folding, and pressing the adhesive in step # 2, and the processing of the predetermined number of sheet materials S is completed. Thereafter, in step # 4, the nozzle 50 is cleaned.

FIG. 6 shows a more detailed flow of the bonding processing of the sheet material S in step # 2. In step # 10, the paper supply unit 20 supplies the sheet material S to the first processing unit 16 one by one. A plurality of cut sheets of a predetermined size, for example, an A4-size sheet material S, which are objects to which the adhesive is to be applied, are placed on the sheet feed table 22 along the guide plate. By the rotation of the paper feed roller 26 at a predetermined timing, the sheet materials S are supplied one by one from the top to the first processing unit 16 on the downstream side. The paper feed table 22 is configured to rise as the paper feed progresses.

In step # 12, the first processing unit 16 forms a perforation in the sheet material S with the perforation blade 24, and gives a fold line 14 for folding the sheet material S by the perforation. FIG. 7 shows a state when the sheet material S is processed. The folding line 14 shown in FIG. 7B is formed along the transport direction F of the sheet material S. The folding line 14 is formed at the center of the sheet material S at a predetermined position in the width direction W. In step # 14, the cutting unit 19 of the first processing unit 16 cuts the sheet material S in the width direction W orthogonal to the transport direction F. In the cutting, when the center of the sheet material S in the conveying direction F is located at the position where the cutting blade 27 is installed, the control unit 9 temporarily stops the conveyance by the conveying roller 32 and moves down the movable blade 29. The sheet material S is cut along the width direction W by the movable blade 29 and the fixed blade 28 as shown in FIG.

In step # 16, the second processing unit 17 applies an adhesive to one of the fold pieces G of the sheet material S. After the second detection unit 112 detects the leading end of the sheet material S, the control unit 9 counts a predetermined number of steps by a stepping motor necessary for the leading end of the sheet material S to be conveyed below the nozzle 50 installation position. After a predetermined time has elapsed, the adhesive valve 56 provided on the adhesive supply tube 55 and the air valve 65 provided on the air supply tube 64 are opened. As a result, the switching means is switched to the adhesive inflow path through which the adhesive flows into the nozzle 50. Further, the closing member 70 is further moved upward in FIG. The inside of the adhesive tank 54 is maintained at a predetermined pressure by pressurized air sent from the compressor 63 via the pressurizing tube 57, and the adhesive in the adhesive tank 54 opens the adhesive valve 56. As a result, it flows into the adhesive supply port 58 provided above the nozzle 50 via the adhesive supply tube 55. Then, the adhesive flowing from the adhesive supply port 58 reaches the adhesive flow path 71, and flows into the mixing flow path 72 by the upward movement of the closing member 70, as indicated by a two-dot chain line in FIG. .

On the other hand, the compressed air from the compressor 63 is supplied to the air supply port 66 through the air supply tube 64 at a predetermined pressure with the opening of the air valve 65, and flows into the mixing flow path 72 from the air flow path 73. I do. In the mixing channel 72, the adhesive mixed with the compressed air from the air channel 73 is discharged from the discharge port 61 toward the sheet material S at a predetermined flow rate. As a result, the adhesive is applied to the sheet material S as indicated by the hatched area in FIG. 7D.

A predetermined number of steps are counted from the time when the second detection unit 112 detects the leading end of the sheet material S, and after the application of the adhesive is started, the predetermined number of steps corresponding to the length of the sheet material S in the transport direction F is further increased. When counting is performed, and when the rear end of the sheet material S passes below the installation position of the nozzle 50, the control unit 9 closes the adhesive valve 56 and the air valve 65, and moves the closing member 70 in FIG. Move down. Thus, the discharge of the adhesive is temporarily stopped. When the second detection unit 112 detects the leading end of the subsequent sheet material S, the control unit 9 starts counting the number of steps until the adhesive is applied again, and moves the nozzle 50 toward the sheet material S at a predetermined timing. The operation of discharging the adhesive is repeated.

During the process of applying the adhesive to the sheet material S in step # 16, the control unit 9 drives the belt driving unit 87. The side belt roller 129 is rotated by the driving of the side belt driving unit 125 via the connecting belt 127, whereby the side belt 88 runs around clockwise or counterclockwise in FIG. In addition, the bottom belt roller 130 is rotated by the driving of the bottom belt driving unit 126 via the connecting belt 128, whereby the bottom belt 89 runs around counterclockwise in FIG. Note that it is also possible to make the vehicle run clockwise in FIG. As described above, during the process of applying the adhesive to the sheet material S, the control unit 9 drives the belt driving unit 87 to discharge the sheet material S from the nozzle 50, but is not applied to the sheet material S to be applied. The adhesive can be received by the receiving member 75 and appropriately collected, and a large amount of adhesive can be prevented from adhering and accumulating on only a part of the receiving member 85.

During the process of applying the adhesive to the sheet material S in step # 16, the control unit 9 drives the suction fan 62. Thus, the suction unit 48 can suction the adhesive discharged from the discharge port 61 of the nozzle 50 and scattered in the atmosphere of the adhesive application unit 34. With the driving of the suction fan 62, the fine adhesive floating inside the both side plates 59 and 60 of the adhesive application section 34 adheres to the filter 49 and is collected from the window 67 into the dust collecting bag. . Thus, it is possible to suppress the adhesive from adhering to various device parts such as the nozzle surface 50, the various tubes 55, 64, 79, the support member 84, and the outside of the side belt 88. Therefore, the adhesive can be applied in a clean environment.

In step # 18, the sheet material S reaches the folding section 35 and is folded along the folding line 14. At this time, the control unit 9 drives the suction fan 96 to convey the sheet material S while keeping the sheet material S in close contact with the suction conveyor belt 95. The control unit 9 presses the upper surface of the folded piece U with a pressing roller 97 that is driven and rotated. The folding line 14 of the sheet material S is aligned with the folding guide 93 installation position, and when the folding piece U is conveyed to the downstream side while being sandwiched between the pressing roller 97 and the suction conveyor belt 95, the folding piece G is moved to the folding rod 94. As shown in FIGS. 7 (e) and 7 (f), it is lifted up and folded back by 180 degrees to be stacked on the folded piece U.

In step # 20, the sheet material S reaches the pressing portion 36 and is pressed by the press roller 105 at a predetermined pressure. The adhesive bonds the pieces G and U with an adhesive force that can be peeled off by hand. In step # 22, the sheet material S is discharged to the paper discharge unit 15, and is stacked on the stacker 109 in an upright state.

FIG. 8 shows a more detailed flow of the cleaning process of the nozzle 50 in step # 4 of FIG. In step # 24, the fifth detecting unit 115 detects the rear end of the sheet material S supplied last in the predetermined number of continuous bonding processes. In step # 26, the control unit 9 opens the cleaning liquid valve 80 and the air valve 65. As a result, the switching means is switched to the cleaning liquid inflow path through which the cleaning liquid flows into the nozzle 50.

The inside of the cleaning liquid tank 78 is pressurized by compressed air sent from the compressor 63 via a pressurizing tube 77. The cleaning liquid in the cleaning liquid tank 78 flows through the cleaning liquid tube 79 by opening the cleaning liquid valve 80, and flows into the main body 53 of the nozzle 50 from the cleaning liquid supply port 81. The cleaning liquid flows through the cleaning liquid flow path 74 in the main body 53 of the nozzle 50 and reaches the mixing flow path 72.

On the other hand, when the air valve 65 is opened, the compressed air flows into the air tube 64 from the compressor 63 and further flows into the main body 53 of the nozzle 50 from the air supply port 66. The compressed air flows from the air supply port 66 to the air flow path 73, reaches the mixing flow path 72, and is mixed with the cleaning liquid flowing from the cleaning liquid flow path 74.

As a result, the adhesive adhered to the inside of the main body 53 is cleaned by the cleaning liquid supplied to the inside of the main body 53 of the nozzle 50. The cleaning liquid can enter the narrowed portions of the mixing flow path 72, the discharge port 61, and the air flow path 73 and the cleaning liquid flow path 74 in the vicinity thereof, and can wash away the adhered adhesive.

Therefore, the adhesive adhered to the inside of the main body 53 of the nozzle 50 can be more clearly removed. After the application processing to the sheet material S is performed, the nozzle 50 is not clogged with the adhesive adhered to the inside of the main body 53 of the nozzle 50 so as not to hinder the subsequent application operation of the adhesive of the sheet material S. it can.

The opening of the cleaning liquid valve 80 and the air valve 65 is continued for a preset predetermined time. FIG. 9 is a diagram illustrating an example of the timing of opening the cleaning liquid valve 80 and the air valve 65 and supplying the cleaning liquid and air to the main body 53 of the nozzle 50 in the nozzle cleaning processing. In FIG. 9, the control unit 9 simultaneously opens the cleaning liquid valve 80 and the air valve 65 at t1, and simultaneously closes both at t2. By closing the cleaning liquid valve 80 and the air valve 65 at the same time, it is considered that air remains in the air flow path 73 and cleaning liquid remains in the cleaning liquid flow path 74.

The control unit 9 then opens only the air valve 65 a plurality of times while keeping the cleaning liquid valve 80 closed. That is, the control unit 9 opens only the air valve 65 at t3, and thereafter closes the air valve 65 at t4. Further, the air valve 65 is opened again at t5, and closed at t6. At t7, the air valve 65 is opened again, and closed at t8. Then, the air valve 65 is opened again at t9 and closed at t10.

As described above, by repeating the operation of opening and closing only the air valve 65 a plurality of times with the cleaning liquid valve 80 closed, the pressure state of the air inside the nozzle 50 main body 53 is changed. Then, the cleaning liquid remaining in the cleaning liquid flow path 74, the discharge port 61, the mixing flow path 72, and the air flow path 73 of the main body 53 can be discharged from the discharge port 61 by its own weight or negative pressure.

Therefore, compared to the case where both the cleaning liquid valve 80 and the air valve 65 are simultaneously stopped, the cleaning liquid remaining inside the cleaning liquid tube 79 downstream of the cleaning liquid valve 80 and the main body 53 of the nozzle 50 is removed. It can be discharged into the space of the adhesive application section 34 which is located outside. When the adhesive is applied to the subsequent sheet material S, the cleaning liquid remaining inside the cleaning liquid tube 79 or the main body 53 falls on the sheet material S as it is or mixed with the adhesive, It is possible to prevent the adhesive from being appropriately applied.

The liquid containing the used cleaning liquid used for cleaning the inside of the main body 53 of the nozzle 50 is discharged at a predetermined flow rate from the discharge port 61 together with the compressed air flowing from the air flow path 73 and discharged. The liquid containing the used cleaning liquid discharged from the main body 53 of the nozzle 50 is received by the receiving member 75. As described above, since the receiving member 75 receives and collects the liquid containing the used cleaning liquid used for cleaning the inside of the main body 53 of the nozzle 50, it is possible to suppress the liquid containing the used cleaning liquid from scattering into the apparatus. Can be.

In step # 26, the control unit 9 collects the liquid including the cleaning liquid. Therefore, the control unit 9 opens the cleaning liquid valve 80 and the air valve 65, thereby cleaning the inside of the main body 53 of the nozzle 50. During the cleaning process of the inside of the main body 53 of the nozzle 50, the belt driving unit 87 is driven.

The side belt 88 is driven to rotate by the driving of the side belt driving unit 125. The side belt 88 receives a cleaning liquid containing an adhesive. The side belt scraping member 123 comes into contact with the inner surface of the running side belt 88 with a predetermined pressing force, and scrapes the liquid including the used cleaning liquid from the side belt 88. In the case where the adhesive is an emulsion adhesive, for example, when water is used as the cleaning liquid, the water as the cleaning liquid easily dissolves or disperses the emulsion adhesive adhered to the inside of the nozzle 50 main body 53 in the cleaning liquid. The inside of the main body 53 can be cleaned. Further, the liquid containing the used cleaning liquid is scraped off from the side belt 88 by the side belt scraping member 123, and then travels downward on the side surface of the side belt scraping member 123 by its own weight onto the lower bottom belt 89. Fall.

The bottom belt 89 runs around, for example, counterclockwise in FIG. 3 by driving of the bottom belt driving unit 126. The liquid containing the used cleaning liquid dropped directly from the discharge port 61 of the nozzle 50 or through the side belt 88 and the side belt scraping member 123 is received by the bottom belt 89. The bottom belt 89 receives a liquid containing an adhesive and a used cleaning liquid while traveling on the upper side. After the bottom belt 89 rotates downward, the liquid including the adhesive and the used cleaning liquid is scraped off by slidingly contacting the upper surface of the bottom belt scraping member 134 pressed against the bottom belt 89 with a predetermined pressure from below. . The liquid containing the scraped adhesive and the used cleaning liquid is guided downward along the left side surface of the bottom belt scraping member 134 in FIG. The liquid containing the used cleaning liquid collected in the collection container 83 is subjected to necessary processing by a user of the bonding apparatus 10, and is reused or discarded.

As described above, the receiving member 75 is provided with the belt 86 that travels around, and the guide portion 82 includes the scraping member 121 that scrapes the liquid including the used cleaning liquid attached to the belt 86 and guides the liquid to the collection container 83. Therefore, the liquid containing the used cleaning liquid is received by the belt 86 traveling around, and the received liquid containing the used cleaning liquid can be scraped off by the scraping member 121 and easily collected in the collection container 83.

In addition, during the cleaning process of the inside of the main body 53 of the nozzle 50, the control unit 9 drives the belt driving unit 87 so that the belt 86 can run around. Therefore, the liquid including the used cleaning liquid discharged from the discharge port 61 of the nozzle 50 can be received at a plurality of different locations on the belt 86. Even when a large amount of adhesive has adhered to only a part of the belt 86, the liquid including the cleaning liquid can be easily received at the location where the large amount of adhesive has adhered. The adhesive is dissolved by the liquid containing the cleaning liquid received at the portion where the large amount of adhesive has adhered, and the adhesive is easily guided to the collection container 83.

The present invention is not limited to the above embodiment, but can be implemented in various other modes. For example, the first processing unit 16 includes the perforation forming unit 21 and the cutting unit 19, but may not include any one or both of them. Although the fold line 14 is formed by perforations, a crease mechanism for forming a groove of a predetermined depth in the sheet material may be provided, and the fold line may be formed by the crease. Further, the sheet discharging unit 15 holds the sheet material in an upright state, but may stack horizontally.

Further, an adhesive flow path 71, an air flow path 73, a cleaning liquid flow path 74, and a mixed liquid flow path 72 are provided inside the main body 53 of the nozzle 50, but the adhesive flow path also serves as the cleaning liquid flow path. You may comprise. In this case, when cleaning the inside of the main body, the cleaning liquid is supplied to the adhesive flow path. In this case, the switching unit uses a three-way switching valve instead of forming the switching unit by opening and closing the adhesive valve 56 and the cleaning liquid valve 80. You can switch between roads.

Although the cleaning unit 51 that supplies the cleaning liquid to the inside of the main body 53 of the nozzle 50 and cleans the adhesive attached inside the main body 53 is provided, the cleaning unit may not be provided. In this case, it is preferable that the adhesive is of a type that does not easily cause the problem of clogging of the inside of the nozzle body, or that the inside of the nozzle body is made of a material or structure that is hard to be clogged with the adhesive.

Further, although the guide portion 82 for guiding the adhesive received by the receiving member 75 into the collection container 83 is provided, the guide portion may not be provided, or another configuration may be used instead of the guide portion. For example, the used receiving member may be removed from the apparatus main body, discarded, and a new receiving member may be installed. Further, the receiving member may be configured to also serve as the guide portion, and the adhesive may fall from the surface of the receiving member to the collection container installed below by its own weight. Alternatively, the receiving member may be formed of a material capable of easily peeling off the adhesive from the receiving member manually or a surface processed state. Thus, the liquid containing the adhesive and the used cleaning liquid received by the receiving member can be collected without providing the guide part separately from the receiving member.

Further, the receiving member 75 is provided with the belt 86 that runs around or not, but the receiving member 75 may not be provided with the belt, and the receiving member is configured by a side plate, a member having an inclined or curved surface, or a soft material such as paper or cloth. May be. The adhesive was discharged inside the side belt traveling around and the adhesive adhered to the inner peripheral surface of the side belt. Instead, the adhesive was applied to a roller having a rotation axis in the vertical direction or another direction. A configuration in which the adhesive is received on the outer peripheral side surface of the belt may be adopted. In this case, it is preferable to install a plurality of belts.

The receiving member 75 receives and collects the liquid containing the used cleaning liquid used for cleaning the inside of the nozzle body in addition to the adhesive, but is not limited thereto, and receives only the adhesive and receives the liquid containing the cleaning liquid. It may not be. In this case, for example, the receiving member may be taken out of the apparatus body in a used state in which the adhesive has been received, discarded, and replaced with a new receiving member, or a mechanism for such replacement may be provided. Good.

Further, the guide portion 82 is provided with a scraping member 121 for scraping the liquid including the used cleaning liquid adhered to the belt 86 and guiding the liquid to the collection container 83. The liquid including the used cleaning liquid may be configured to fall. Instead of a plate-shaped scraping member, a brush or the like may be used. The brush may be rotating or fixed. When the adhesive is in a powder form, the adhesive may be blown off from the belt by air flow or may be collected by suction. Further, the belt 86 includes the side belt 88 and the bottom belt 89, but may include only one of the side belt and the bottom belt, or may include neither the side belt nor the bottom belt.

Further, although the cleaning liquid tank 78 is installed at a position lower than the cleaning liquid supply port 81 of the nozzle 50, it can be installed at a higher position. When the liquid level of the cleaning liquid stored in the cleaning liquid tank 78 is higher than the cleaning liquid supply port 81, the cleaning liquid valve 80 provided in the middle of the cleaning liquid tube 79 is opened without pressurizing by a compressor. Accordingly, a mechanism in which the cleaning liquid is supplied to the nozzle 50 by its own weight can be used.

Further, the method of cleaning the nozzle 50 is not limited to the state of supplying the cleaning liquid and the air to the nozzle shown in FIG. 9, and the cleaning liquid or the air may be supplied to the nozzle at another timing. That is, without opening only the air valve, the cleaning liquid valve and the air valve are continuously opened only once and opened for a predetermined time, then both are simultaneously closed, and the cleaning liquid and air are supplied for the same time. Good. Alternatively, both the cleaning liquid valve and the air valve may be intermittently opened and closed a plurality of times intermittently to supply both the cleaning liquid and air intermittently at the same timing. FIG. 9 shows a case where the number of times of opening only the air valve is four times, but may be one time, two times, or four times or more.

DESCRIPTION OF SYMBOLS 10 Adhesion processing apparatus 50 Nozzle 51 Cleaning part 53 Main body 75 Receiving member 82 Guide part 83 Collection container 86 Belt 121 Scraping member

Claims (8)

A nozzle for discharging the adhesive is provided toward the object to which the adhesive is to be applied, and a receiving member which receives and collects the adhesive which is discharged from the nozzle and is not applied to the object to be coated is provided . A belt that travels around and a pair of belt rollers whose rotation axis passes over the belt in the vertical direction are provided, and the adhesive that is discharged from the nozzles and is not applied to the application target is used to remove the adhesive inside the belt. Adhesive coating device that receives and collects on the peripheral surface . A nozzle for discharging the adhesive is provided toward the object to which the adhesive is to be applied, and a receiving member for receiving and collecting the adhesive discharged from the nozzle and not applied to the object to be coated is provided. A cleaning unit that supplies a cleaning liquid to the main body and cleans an adhesive adhered to the inside of the main body, wherein the receiving member is used in addition to the adhesive, is discharged from the nozzle, and is used for cleaning the inside of the main body. adhesives coating device accept collect a liquid containing. 3. The adhesive applying apparatus according to claim 2, further comprising a switching unit for switching between an adhesive inflow path for flowing the adhesive into the nozzle and a cleaning liquid inflow path for flowing the cleaning liquid into the nozzle. A nozzle for discharging the adhesive is provided toward the object to which the adhesive is applied, and a receiving member that receives and collects the adhesive that is discharged from the nozzle and is not applied to the application object, and the receiving member receives the adhesive . an adhesive, and a guide portion for guiding the collection container, wherein the receiving member has a belt is provided with a circumferential running, together with the guide portion, scrapes adhesive adhering to the belt inner peripheral surface, collecting An adhesive application device equipped with a scraping member for guiding to a container . The adhesive application device according to claim 4 , wherein the scraping member scrapes the adhesive attached to the inner peripheral surface of the belt. An adhesive application device according to any one of claims 1 to 5, a folded portion for folding the sheet material so that an adhesive application surface of an application object is inside, and an adhesive application surface. And a pressing portion for pressing the folded sheet material to bond the sheet material with the applied adhesive. An adhesive is ejected from a nozzle toward an object to which the adhesive is applied, and the adhesive discharged from the nozzle and not applied to the object to be applied is received and collected by a receiving member, and the adhesive to the object to be applied is collected. After the application, a cleaning liquid is supplied to the inside of the main body of the nozzle, the adhesive adhered to the inside of the main body is cleaned, and the liquid containing the used cleaning liquid used for cleaning the inside of the main body discharged from the main body is discharged. A method of applying an adhesive received by a receiving member . The method for applying an adhesive according to claim 7, wherein the adhesive received by the receiving member is collected into a collection container.

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