Adhesive body attaching device and adhesive body attaching method

Abstract

The present invention relates to an adhesive body attaching device (100) for attaching an adhesive body (1) to an object. The adhesive body attaching device (100) is provided with: a main body (10); a rotating body (20) capable of rotating with respect to the tip (11) of the main body (10) and functioning as a pressing part for pressing the adhesive body (1) to an object; and a guide section (30) that restricts the movement range of the adhesive body (1) within the width of the rotating body (20) in the direction of the rotation axis, and when the width of the rotating body (20) is X and the shortest distance between the rotating body (20) and the guide section (30) is Y, X > = Y.

Description

Technical Field

[0001] This invention relates to an adhesive bonding apparatus and an adhesive bonding method. Background Technology

[0002] Adhesive sheets and adhesive tapes are used for bonding various materials such as metal, glass, wood, paper, corrugated paper, and plastics. For example, in the case of adhesive tape in a rolled form, a substrate with a peel-off treatment applied to the back side in contact with the adhesive surface is used to facilitate unwinding.

[0003] Furthermore, there are devices for attaching filamentous adhesives as adhesives. Patent Document 1 describes an adhesive delivery device comprising: a rotating part mounted relative to a main body in a manner capable of rotating about a first rotation axis; and a pressing part. The pressing part is mounted on the rotating part at a predetermined mounting position and can rotate in conjunction with the rotating part. The pressing part delivers the adhesive at a predetermined delivery position and adheres it to the object while pressing it against it. Additionally, the pressing part passes from the mounting position and rotates about a second rotation axis parallel to the first rotation axis.

[0004] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2020-104475 Summary of the Invention

[0005] The problem that the invention aims to solve However, there is room for improvement in the technique of attaching adhesives to small, confined areas. For example, in the adhesive delivery device described in Patent Document 1, the pressing part at the front end is roller-shaped. When attaching to a confined area, the device needs to be tilted, but since the annular guide portion that forms the trajectory of the adhesive is fixed, the distance from the guide portion to the object increases, which may lead to a deterioration in attachment accuracy.

[0006] The present invention was made in view of the above circumstances, and its object is to provide an adhesive bonding apparatus and adhesive bonding method that can suppress the deterioration of the bonding accuracy of the adhesive.

[0007] Methods for solving problems The above-mentioned objective of the present invention is achieved by the following configuration.

[0008] An adhesive attachment apparatus for attaching an adhesive to an object, the adhesive attachment apparatus comprising: main body; A rotating body, which is rotatable relative to one end of the aforementioned main body, functions as a pressing part for pressing the aforementioned adhesive body onto the aforementioned object; and The guide portion restricts the movement range of the aforementioned adhesive body within its width along the rotation axis of the aforementioned rotating body. When the aforementioned width of the aforementioned rotating body is set as X and the shortest distance between the aforementioned rotating body and the aforementioned guide portion is set as Y, X≥Y.

[0009] An adhesive application method wherein the adhesive is applied to the object using the aforementioned adhesive application device.

[0010] Invention Effects According to the present invention, it is possible to suppress the deterioration of the adhesion accuracy of the adhesive.

[0011] The present invention has been briefly described above. Furthermore, the details of the present invention will become even clearer by referring to the accompanying drawings and reading through the specific embodiments described below (hereinafter referred to as "Embodiments"). Attached Figure Description

[0012] [ Figure 1 ] Figure 1 This is a side view of the adhesive attachment device according to the embodiment.

[0013] [ Figure 2 ] Figure 2 for Figure 1 The cross-sectional view is a diagram showing the interior of the adhesive attachment device.

[0014] [ Figure 3 ] Figure 3 This is a three-dimensional view of the front end of the first example.

[0015] [ Figure 4 ] Figure 4 This is a side view of the front end of example 1.

[0016] [ Figure 5 ] Figure 5 This is a top view of the front end of the first example.

[0017] [ Figure 6 ] Figure 6 This is a bottom view of the front end of the first example.

[0018] [ Figure 7 ] Figure 7 This is an example of a schematic three-dimensional view of a rotating body and a guide section.

[0019] [ Figure 8 ] Figure 8 This is an example of a schematic side view of a rotating body and a guide section.

[0020] [ Figure 9 ] Figure 9 This is an example of a schematic bottom view of a rotating body and a guide section.

[0021] [ Figure 10 ] Figure 10 Another example of a schematic bottom view of a rotating body and a guide section.

[0022] [ Figure 11 ] Figure 11 This is a side view of the front end of example 2.

[0023] [ Figure 12 ] Figure 12 This is a top view of the front end of example 2.

[0024] [ Figure 13 ] Figure 13 This is a side view of the front end of example 3.

[0025] [ Figure 14 ] Figure 14 This is a top view of the front end of example 3.

[0026] [ Figure 15 ] Figure 15 This is a side view of the front end of example 4.

[0027] [ Figure 16 ] Figure 16 This is a top view of the front end of example 4.

[0028] [ Figure 17 ] Figure 17 A perspective view of the gear assembly housed in the delivery mechanism within the main body of the adhesive attachment device.

[0029] [ Figure 18 ] Figure 18 A perspective view of the second gear included in the gear set of the delivery mechanism.

[0030] [ Figure 19 ] Figure 19 The diagram shows a schematic of the adhesive used in the adhesive attachment device. Detailed Implementation

[0031] Examples of embodiments of the present invention will be described below with reference to the accompanying drawings. Figure 1 This is a side view of the adhesive attachment device 100 according to the embodiment. Figure 2 for Figure 1 The cross-sectional view is a diagram showing the interior of the adhesive application device 100. The adhesive application device 100 is a device that delivers and applies an adhesive 1, such as a filament adhesive, to an object. For example, an operator can apply the adhesive 1 to the object by holding the device and sliding it on the surface of the object.

[0032] The adhesive application device 100 has a main body 10, for example, formed of resin, which can be held by an operator. At one end of the shaft-shaped main body 10, a front end portion 11 is provided, having a rotating body (pressing portion) 20 and a guide portion 30. The rotating body 20 is rotatable relative to one end of the main body 10, functioning as a pressing portion to press the adhesive 1 onto the object. The guide portion 30 restricts the movement range of the adhesive 1 within the width of the rotating body 20 in the direction of its rotation axis.

[0033] Furthermore, such as Figure 2 As shown, the adhesive attachment device 100 includes a battery 13, a motor 15, a microswitch 16, a take-up body (spool) 17, a guide roller 18, and a delivery mechanism 40 inside the main body 10. The battery 13 is the power source that supplies power to the motor 15. The motor is driven and rotated by the power from the battery 13 under the control of the microswitch 16.

[0034] The adhesive 1 is wound around a take-up body 17 configured to rotate at the other end 12 of the main body 10 and is pre-extracted to the delivery mechanism 40. Driven by a motor 15, which serves as the drive source, the drive gear 41 of the delivery mechanism 40 (described later) rotates, causing the adhesive 1 pre-extracted to the delivery mechanism 40 to be delivered toward one end (front end 11) of the main body 10. Driven by the delivery mechanism 40, the adhesive 1 released from the take-up body 17 is delivered along the adhesive path R.

[0035] The adhesive 1, which is fed along the adhesive path R, is guided by the guide roller 18 and fed to the feeding mechanism 40, and then fed by the feeding mechanism 40 to the rotating body 20 and the guide part 30 at one end of the main body 10.

[0036] Figure 3 This is a three-dimensional view of the front end 11 of the first example. Figure 4 This is a side view of the front end 11 of example 1. Figure 5 This is a top view of the front end of example 1. Figure 6 This is a bottom view of the front end of the first example. At the front end 11, a rotating body 20 and a guide part 30 are provided. The rotating body 20 is a roller supported by a support beam part 14 in a rotatable manner, and functions as a pressing part to press the adhesive 1 onto the object. The aforementioned support beam part 14 is formed in such a way that it extends from one end of the main body 10.

[0037] The guide portion 30 is disposed in the front end portion 11 opposite to the rotating body 20 and has an opening shape 36 through which the adhesive 1 can be inserted. The opening shape 36 of the guide portion 30 can smoothly deliver the adhesive 1 while restricting its movement.

[0038] Specifically, the guide portion 30 includes a support body 32 and a linear member 34. The support body 32 is a beam-shaped member fixed to the front end body, supporting the linear member 34. The linear member 34 is a linear member supported by the support body 32, including a straight section 34a, and is located directly in front of the rotating body 20 in the delivery direction of the adhesive body 1. The adhesive body 1 is delivered from the guide portion 30 to the rotating body 20 while being guided by the straight section 34a in a state of final contact and sliding with the straight section 34a.

[0039] In this embodiment, a pair of beam-shaped support bodies 32 are provided to support the two ends of the linear member 34, and the opening shape 36 is defined by the pair of support bodies 32 and the linear member 34. Adhesive body 1 is in Figure 6 From the main body 10 ( Figure 6 (From the right side) it is sent out from top to bottom, that is, from the depth of the paper surface toward the front through the opening shape 36, and contacts the linear member 34.

[0040] That is, the range of movement of the adhesive 1 is limited by the straight portion 34a of the linear member 34 that ultimately contacts and slides, and by the opposing portions of the pair of supports 32. Specifically, the straight portion 34a of the linear member 34 and the opposing portions of the pair of supports 32 limit the range of movement of the adhesive 1 within... Figure 5 The width X in the direction of the rotation axis of the rotating body 20 is shown. In this example, the distance between the opposing pair of support bodies 32 is approximately equal to the width X of the rotating body 20. By means of the opposing portions of the linear member 34 and the pair of support bodies 32, the adhesive body 1 can be smoothly delivered while limiting its movement range to a suitable extent.

[0041] Figure 7 This is an example of a schematic perspective view of the rotating body 20 and the guide part 30. Figure 8 This is an example of a schematic side view of the rotating body 20 and the guide portion 30. After the adhesive 1 delivered from the main body 10 passes through the support 32 of the guide portion 30, it is delivered from the guide portion 30 while sliding in contact with the linear member 34, and is pressed onto the object W by the rotating body 20 and attached to the object W.

[0042] In particular, such as Figure 4 and Figure 5 As shown, in this embodiment, when the width of the rotating body 20 is set to X and the shortest distance between the rotating body 20 and the guide portion 30 is set to Y, X ≥ Y is satisfied. That is, the shortest distance Y between the rotating body 20 and the guide portion 30 is set such that the width X of the rotating body 20 is less than or equal to the shortest distance between the rotating body 20 and the guide portion 30, and the guide portion 30 is positioned close to the rotating body 20. Therefore, the rotating body 20, which ultimately presses and attaches the adhesive body 1, can substantially maintain the accuracy of limiting the movement range of the adhesive body 1 based on the guide portion 30, and can suppress the deterioration of the attachment accuracy of the adhesive body 1.

[0043] Figure 9 This is an example of a schematic bottom view of the rotating body 20 and the guide portion 30. In this example, the linear member 34 includes a V-shaped portion (or U-shaped portion) 34b supported by the support body 32. The adhesive body 1 can be smoothly delivered through the V-shaped (or U-shaped) shape while the linear member 34 guides the movement of the adhesive body 1. In addition, the linear member 34 is stably fixed by the support body 32, thus enabling the adhesive body 1 to be delivered smoothly.

[0044] Figure 10 Another example of a schematic bottom view of the rotating body 20 and the guide portion 30, with Figures 3-6 The examples are essentially the same. The support body 32 includes a pair of beam-shaped support bodies 32 that support the two ends of the linear member 34, which includes a straight portion 34a. The linear member 34 guides the movement of the adhesive body 1 while the linear shape smoothly delivers the adhesive body 1. In addition, the straight portion 34a of the linear member 34 and the opposing portions of the pair of support bodies 32 limit the range of movement of the adhesive body 1 to a width X in the direction of the rotation axis of the rotating body 20.

[0045] It should be noted that a grooved roller with grooves through which the adhesive 1 can pass can also be configured instead of the linear member 34.

[0046] The material of the guide part 30 is not particularly limited and can be formed from resin or the like. The support 32 is formed, for example, from a material that can ensure a specified strength. As for the linear member 34, considering that the adhesive 1 will slide in contact with it, it is formed, for example, from a material that can suppress friction with the adhesive 1. It should be noted that, considering that the support 32 will come into contact with an object, it can also be formed into a shape composed of curved surfaces, for example, without corners or edges.

[0047] The outermost surface of the rotating body 20 has a surface free energy γ of less than 40 [mJ / m 2 Formed in the manner of ] (γ<40 [mJ / m 2 In this configuration, since the surface free energy of pressing the adhesive 1 onto the rotating body 20 of the object is less than a specified value, it is possible to suppress the adhesion of the adhesive 1 to the rotating body 20 and smoothly deliver the adhesive 1.

[0048] The outermost surface of the rotating body 20 can be formed using at least one of, for example, silicone resin, fluororesin, polyolefin resin, and surface-treated metal. In this configuration, since the outermost surface of the rotating body 20, which presses the adhesive 1 onto the object, is formed using a material with low surface free energy γ, it is possible to prevent the adhesive 1 from adhering to the rotating body 20 and to smoothly deliver the adhesive 1.

[0049] The width X of the rotating body 20 is set to, for example, 5 mm or less. Therefore, at the position of the rotating body 20, the range of movement of the adhesive body 1 can be limited to a suitable range.

[0050] exist Figures 3-4 In the first example shown, the width X of the rotating body 20 is set to, for example, 1.5 mm, and the material is silicone resin. In this way, the rotating body 20 can deform to follow the object, making it suitable for pressing filamentous adhesives and attaching them to the object.

[0051] Figure 11 This is a side view of the front end 11 of example 2. Figure 12 This is a top view of the front end 11 of the second example. The width X of the rotating body 20 is set to, for example, 0.9 mm, and the material is fluoropolymer. The rotating body 20 is formed thin enough to be inserted into, for example, a 1 mm wide groove G in an object W, and is formed using a material that ensures strength even when thin.

[0052] Figure 13 This is a side view of the front end 11 of example 3. Figure 14 This is a top view of the front end 11 in the third example. The width X of the rotating body 20 is set to, for example, 4.0 mm, and the material is silicone resin. The rotating body 20 has a large area, which enables the adhesive 1 to be reliably attached to a planar object.

[0053] Figure 15 This is a side view of the front end 11 of example 4. Figure 16 This is a top view of the front end 11 of example 4. The width X of the rotating body 20 is set to, for example, 1.5 mm, and the material is silicone resin. In the guide part 30, with... Figure 9 Similarly, the linear member 34 supported by the support body 32 includes a V-shaped portion 34b.

[0054] The front end portion 11 can also be configured to be detachable from the main body 10. Each of the aforementioned front end portions 11 can be appropriately selected according to the shape of the object W, etc., and can be installed at one end of the main body 10.

[0055] In this embodiment, the rotating body 20 is composed of a roller that rotates around a rotating axis. However, the rotating body 20 can function as a pressing part that presses the adhesive 1 onto the object, or it can have other shapes such as a sphere.

[0056] Figure 17 A perspective view of the gear set in the delivery mechanism 40 housed within the main body 10 of the adhesive attachment device 100. Figure 18 This is a perspective view of the second gear 43 included in the gear set of the delivery mechanism 40. As described above, the delivery mechanism 40 is a mechanism for releasing the adhesive material wound around the take-up body 17. The arrows indicate the rotation direction of each gear.

[0057] The delivery mechanism 40 is composed of a gear set including a drive gear 41, a first gear 42, a second gear 43, a third gear 44, a fourth gear 45, a fifth gear 46, and a sixth gear 47. The drive gear 41 is rotated by the motor 15, which serves as the drive source, and drives the other gears by this rotation, thus being positioned as the drive source for the other gears.

[0058] The first gear 42 is positioned relative to the drive gear 41 on the side of the adhesive path R (lower side in the figure) through which the adhesive 1 passes, and directly meshes with the drive gear 41, thus rotating together with the drive gear 41. The second gear 43 is positioned relative to the first gear 42 on the opposite side of the adhesive path R (lower side in the figure), and directly meshes with the first gear 42, thus rotating together with the first gear 42. That is, the first gear 42 and the second gear 43 mesh and rotate while the adhesive 1 is sandwiched between them.

[0059] The third gear 44 is positioned upstream of the adhesive path R (right side in the figure) relative to the drive gear 41 and directly meshes with the drive gear 41, thus rotating together with the drive gear 41. The fourth gear 45 is positioned opposite to the third gear 44 (lower side in the figure) relative to the third gear 44 and directly meshes with the third gear 44, thus rotating together with the third gear 44. That is, the third gear 44 and the fourth gear 45 mesh and rotate while the adhesive 1 is sandwiched between them.

[0060] The fifth gear 46 is positioned downstream of the adhesive path R (left side in the figure) relative to the drive gear 41 and directly meshes with the drive gear 41, thus rotating together with the drive gear 41. The sixth gear 47 is positioned opposite to the fifth gear 46 (lower side in the figure) relative to the fifth gear 46 and directly meshes with the fifth gear 46, thus rotating together with the fifth gear 46. That is, the fifth gear 46 and the sixth gear 47 mesh and rotate while the adhesive 1 is sandwiched between them.

[0061] By engaging and rotating the first gear 42 and the second gear 43 while the adhesive 1 is sandwiched between them, the adhesive 1 released from the take-up body 17 can be fed to the rotating body 20. That is, the first gear 42 and the second gear 43 spontaneously peel the adhesive 1 from the take-up body 17 and release the adhesive 1, thus enabling the adhesive 1 to be smoothly fed to the rotating body 20.

[0062] By engaging and rotating the third gear 44 and the fourth gear 45 while the adhesive 1 is sandwiched between them, the adhesive 1 released from the winding body 17 can be fed to the rotating body 20. By engaging and rotating the fifth gear 46 and the sixth gear 47 while the adhesive 1 is sandwiched between them, the adhesive 1 released from the winding body 17 can be fed to the rotating body 20.

[0063] Among them, the first gear 42 and the second gear 43 are mainly responsible for conveying the adhesive 1. The third gear 44 and the fourth gear 45 are mainly responsible for guiding the adhesive 1 to the correct adhesive path R. The fifth gear 46 and the sixth gear 47 are mainly responsible for feeding the adhesive 1 along the correct adhesive path R to the rotating body 20.

[0064] It should be noted that, in this embodiment, the first gear 42 rotates via the drive gear 41, which serves as the drive source, and the driving force from the motor 15, but it can also be rotated manually. The second gear 43 rotates in conjunction with the rotation of the first gear 42, thereby clamping the adhesive 1 and pulling it in the direction of rotation. Since the first gear 42 can be driven to rotate the second gear 43, the adhesive 1 can be smoothly delivered to the rotating body 20 while simplifying the configuration.

[0065] Figure 18 Figure 20 shows a perspective view of the second gear 43 included in the gear set of the feeding mechanism. Figure 20 shows an example of the second gear 43, but at least either the first gear 42 or the second gear 43 can be a grooved gear, for example, having a groove 48 extending along the direction of rotation on its outer circumferential surface. By using such a grooved gear, the adhesive 1 is positioned in the groove 48 and fed to the rotating body 20, thus preventing the adhesive 1 from detaching from the first gear 42 or the second gear 43 and preventing the adhesive 1 from being crushed.

[0066] Grooved gears can be manufactured, for example, by forming a groove in the center of the gear and setting a component such as a silicone rubber ring, or by forming a U-shaped groove in the center of the gear.

[0067] At least the bottom surface of the groove 48 of the grooved gear can be formed using at least one of, for example, silicone resin, fluororesin, polyolefin resin, and surface-treated metal. At least the bottom surface of the groove 48 of at least either the first gear 42 or the second gear 43 has a surface free energy γ of less than 40 [mJ / m²]. 2 Formed in the manner of ] (γ<40 [mJ / m 2 Therefore, it is possible to prevent the adhesive 1 from adhering to the groove 48 of the first gear 42 or the second gear 43, and to smoothly deliver the adhesive 1.

[0068] Additionally, the outermost surface of at least either the first gear 42 or the second gear 43 may also have a surface free energy γ less than 40 [mJ / m]. 2 In this configuration, the surface free energy of the outermost surface of at least one of the first gear 42 and the second gear 43, which guides the adhesive 1 to the object, is less than a predetermined value. Therefore, it is possible to prevent the adhesive 1 from adhering to the first gear 42 or the second gear 43, and to smoothly deliver the adhesive 1.

[0069] The shape and characteristics of the first gear 42 and the second gear 43 mentioned above can also be applied to the fourth gear 45 and the sixth gear 47.

[0070] It should be noted that, for example, a filamentous adhesive can be applied to the object as the adhesive 1. Because a filamentous adhesive is used as the adhesive, the adhesive 1 can be applied smoothly even to narrow parts of the object.

[0071] Furthermore, while the above embodiment shows an example of an adhesive application device 100 that can be operated by hand, the adhesive 1 can also be applied with good precision using an automated machine by mounting a rotating body 20 and a guide 30 on a multi-joint robotic arm with six degrees of freedom, for example. Additionally, by providing a delivery mechanism 40 in a fixed adhesive application device, adhesives can be applied smoothly.

[0072] Figure 19 A schematic diagram of the adhesive 1 used in the adhesive attachment device 100 of the above embodiment is shown.

[0073] like Figure 19 As shown, the adhesive 1 is a filamentous adhesive formed by a linear core material 1a and an adhesive layer 1b covering the longitudinal surface of the core material 1a, and is in the shape of a long strip. Here, "linear" refers not only to straight lines, curves, and zigzag lines, but also to a state that can be bent in multiple directions and angles (i.e., filamentous). Furthermore, the adhesive layer 1b in this specification also includes a linear adhesive layer.

[0074] It should be noted that the cross-sectional shape of the adhesive 1 in this embodiment is circular, but this embodiment is not limited to this. In addition to a circle, the cross-sectional shape can also be elliptical, quadrilateral, rectangular, etc.

[0075] Adhesive layer 1b comprises an adhesive formed from an adhesive composition. As for the adhesive, there are no particular limitations as long as the gel fraction and the amount of change in gel fraction described above are satisfied; known adhesives can be used. Examples include acrylic adhesives, rubber adhesives, vinyl alkyl ether adhesives, silicone adhesives, polyester adhesives, polyamide adhesives, urethane adhesives, fluorinated adhesives, and epoxy adhesives. From the perspective of adhesion, acrylic adhesives, urethane adhesives, silicone adhesives, rubber adhesives, or polyester adhesives are preferred, with acrylic adhesives being particularly preferred. It should be noted that only one type of adhesive can be used, or two or more types can be used in combination. Furthermore, the adhesive in this embodiment is preferably a pressure-sensitive adhesive that has adhesive properties at room temperature and can adhere the object to its surface using the pressure generated when the adhesive surface comes into contact with the surface of the object. If it is a pressure-sensitive adhesive, heating is not required, and it can be used for heat-sensitive objects.

[0076] It should be noted that, as the adhesive, any type of solvent-based adhesive or water-dispersible adhesive can be used, preferably an adhesive that crosslinks through the drying of the adhesive composition (solvent evaporation) and rapidly completes crosslinking after drying. This is because no new crosslinking is introduced after the surfaces of the adhesive layers 1b come into contact with each other. Here, from the perspectives of high-speed application, environmental friendliness, and minimal impact of the solvent on the substrate and core material 1a (swelling, dissolution), a water-dispersible adhesive is preferred, and a water-dispersible acrylic adhesive is more preferred.

[0077] Here, in the adhesive body 1 having a core material 1a, the adhesive layer 1b can cover the entire surface (the surface in the longitudinal direction) of the core material 1a, or it can cover only at least a portion of the surface of the core material 1a. Furthermore, typically, the adhesive layer 1b is formed continuously, but it is not limited to this form and can also be formed into regular or irregular patterns such as dots or stripes. It should be noted that the end faces of the core material 1a may or may not be covered by the adhesive layer 1b. For example, if the adhesive body 1 is cut during manufacturing or use, the end faces of the core material 1a may not be covered by the adhesive layer 1b.

[0078] The core material 1a used in the adhesive 1 can be, for example, resin, rubber, foam, inorganic fiber, or a composite thereof. Examples of resins include polyolefins such as polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer; polyesters such as polyethylene terephthalate (PET); vinyl chloride resin; vinyl acetate resin; polyimide resin; polyamide resin; and fluorinated resins. Examples of rubbers include synthetic rubbers such as natural rubber and polyurethane rubber. Examples of foams include foamed polyurethane and foamed polychloroprene rubber. Examples of fibers include glass fiber, carbon fiber, metal fiber, chemical fiber (regenerated fiber, semi-synthetic fiber, synthetic fiber, etc.), and natural fiber (plant fiber, animal fiber, and others). Furthermore, the cross-sectional shape of the core material 1a is not particularly limited, but it typically has a cross-sectional shape corresponding to the cross-sectional shape of the adhesive 1.

[0079] Furthermore, the materials that can be used as the filamentous core material 1a in the adhesive 1 include various polymer materials such as rayon, cuprammonium cellulose, acetate, Promix, nylon, aramid, vinylon, polyvinylidene chloride, polyvinyl chloride, polyester, acrylic, polyethylene, polypropylene, polyurethane, polyvinyl chloride, polylactic acid, etc.; glass, carbon fiber, natural rubber, synthetic rubber such as polyurethane, etc.; natural materials such as cotton and wool; and metals. In addition, the form of the filamentous core material 1a can be, for example, in addition to monofilaments, multifilaments, staple yarns, processed yarns that have undergone crimping, bulking, etc., commonly referred to as textured yarns, bulky yarns, elastic yarns, or yarns combined by twisting, etc. Furthermore, the cross-sectional shape is not only circular, but can also be rectangular (quadrilateral or other rectangular shapes), star-shaped, elliptical, hollow, etc.

[0080] It should be noted that various additives such as fillers (inorganic fillers, organic fillers, etc.), anti-aging agents, antioxidants, ultraviolet absorbers, antistatic agents, lubricants, plasticizers, and colorants (pigments, dyes, etc.) can be added to the core material 1a as needed. Known or commonly used surface treatments such as corona discharge treatment, plasma treatment, and primer coating can also be applied to the surface of the core material 1a.

[0081] The dimensions of the cross-section of the core material 1a are not particularly limited and can be appropriately selected according to the purpose. For example, if it is a circular cross-section, from the point of view of operability (bending ability, difficulty in breaking), its diameter is preferably 1μm to 2000μm, more preferably 10μm to 1000μm.

[0082] The thickness of the adhesive layer 1b is not particularly limited, but from the viewpoint of adhesion, it is preferably 1 μm or more, and more preferably 3 μm or more. Furthermore, from the viewpoint of uneven thickness and drying properties, it is preferably 200 μm or less, and more preferably 150 μm or less. Additionally, it can be thickened by lamination depending on the application.

[0083] The adhesive 1 is particularly preferred to be a pressure-sensitive adhesive that forms the adhesive layer 1b, has adhesive properties at room temperature, and can adhere the object to its surface by utilizing the pressure generated when the surface of the adhesive comes into contact with the surface of the object. If it is a pressure-sensitive adhesive, heating is not required, and it can be used for heat-sensitive objects.

[0084] As mentioned above, the shape of the adhesive 1 is not particularly limited. The larger the ratio (major axis / minor axis) of the length of the major axis (the longest axis passing through the centroid of the cross-section) to the length of the minor axis (the shortest axis passing through the centroid of the cross-section) in the cross-sectional shape of the adhesive 1, the flatter the shape of the adhesive 1 becomes. On the other hand, the smaller this ratio is, the closer the cross-sectional shape of the adhesive 1 is to a circle. This ratio reaches its minimum value of 1 when the cross-sectional shape is circular. The minimum value of 1 also includes special shapes such as triangles and stars.

[0085] Adhesive 1 may also have a release liner. When adhesive 1 has a release liner, the release liner can be peeled off from the adhesive layer 1b before adhesive 1 reaches the guide portion 30, or it can be peeled off after application, allowing adhesive 1 to be adhered to the object W. By having adhesive 1 with a release liner, the self-adhesive force of adhesive 1 can be reduced, thus allowing adhesive 1 to be pressed against the object W with reduced tension. Therefore, it is possible to prevent adhesive 1 from peeling off, breaking, re-attaching, or tangling due to tension when pressed against the object W, thereby ensuring smooth application of adhesive 1.

[0086] The implementation methods and usage of the adhesive 1 can be broadly classified into the following four modes. The non-adhesive layer here is a layer that covers the surface (the surface in the longitudinal direction) of the adhesive 1. For example, it includes a non-adhesive layer that covers the adhesive 1 in its initial state before stretching, but breaks upon stretching, thereby exhibiting the adhesiveness of the adhesive 1. However, the type and raw materials of the non-adhesive layer are not particularly limited.

[0087] 1) Directly press-fit adhesives without non-adhesive layers (pressing) 2) Adhesive without non-adhesive layer + release liner (the release liner is removed before or after crimping) 3) Adhesive bodies covered by non-adhesive layers 4) Adhesive body covered by a non-adhesive layer + release liner (the release liner is removed before or after crimping) Regarding 2) or 4) above, as an example of the release liner being peeled off after crimping, the case in which the release liner is peeled off after the adhesive is attached to the first object and before it is attached to the second object can be cited.

[0088] Furthermore, the adhesive 1 of this embodiment is flexible, being a filament that can be bent in multiple directions and angles. In addition to the aforementioned effects, the flexible adhesive 1, especially the filamentous adhesive 1, also has the advantage of being easily adaptable to complex shapes such as curves, curved surfaces, and uneven surfaces.

[0089] For example, when applying adhesive tape to objects with complex shapes such as curves, surfaces, or unevenness, wrinkles and overlaps may occur on the tape in these areas, making it difficult to prevent overflow and achieve neat application. Furthermore, wrinkles and overlaps can be a major factor in reduced adhesion. Alternatively, to apply the adhesive tape without wrinkles or overlaps, it can be cut into thin pieces and applied simultaneously, but this significantly worsens workability. On the other hand, if a flexible adhesive 1, especially a filamentous adhesive 1, is used, it can be firmly applied without wrinkles or overlaps even when applied to complex shapes such as curves, surfaces, or unevenness. Moreover, such an adhesive 1 can be applied to the desired area in one step, resulting in excellent workability and suitability for automated production lines.

[0090] As an example of a specific application of the filamentous adhesive 1, it can be used to fix various wires (wire-like components) and narrow components in a desired shape, such as cables like wires and optical fibers, LED fiber optic lights, fiber optic sensors like FBGs (Fiber Bragg Gratings), filaments, ropes, and threads. For example, even when fixing wires and narrow components to other components in complex shapes, the filamentous adhesive 1 can firmly fix them with excellent workability while suppressing spillage, wrinkles, and overlap, according to the complex shape that the wires and narrow components should have. It should be noted that when fixing wires and narrow components to other components, the filamentous adhesive 1 can be pre-attached according to the shape on the surface of the other component where the wires and narrow components should be fixed, and then the wires and narrow components can be attached and fixed according to the adhesive 1 attached to the surface of the other component. Alternatively, the filamentous adhesive 1 can be attached to the wires and narrow components, and then the wires and narrow components can be fixed to other components in a desired shape.

[0091] In addition, the filamentous adhesive 1 can also be suitably used for the purpose of temporarily fixing (temporarily holding) an article to the surface of another article. More specifically, the filamentous adhesive 1 is particularly suitable for the purpose of temporary fixing (temporarily holding) of textile products such as clothing, shoes, bags, and hats, as well as leather products. However, its use is not limited to this, and it can be suitably used for various purposes where temporary fixing (temporary holding) is desired.

[0092] For example, when fixing one item to the surface of another item, after temporarily fixing the first item to the surface of the other item using filamentous adhesive 1 for positioning, the two items are then fixed together (formally fixed) using methods such as heat pressing or sewing. In this case, if filamentous adhesive 1 is used, it is easy to avoid the fixing part provided between the two items for temporary fixing. For example, when sewing fiber products or leather products, if filamentous adhesive 1 is used for temporary fixing, it is easy to avoid the sewing part for temporary fixing, and it is easy to prevent the adhesive from adhering to the needle.

[0093] In addition, if it is a filamentous adhesive 1, as mentioned above, even if the two items are complex shapes such as curves, curved surfaces, or concave and convex shapes, they can be well attached while suppressing overflow, wrinkles, and overlaps. Moreover, they can be attached in one process, making them easy to work with.

[0094] In addition, for example, even for easily deformable components such as fabrics, cloths, and leathers that constitute fiber or leather products, the deformation of the components caused by stretching can be suppressed or prevented by temporary fixation using filamentous adhesive 1, and the design becomes better after fixation (formal fixation).

[0095] Furthermore, if it is a filamentous adhesive 1, it is easy to remove the filamentous adhesive 1 from between the two fixed (formally fixed) items as needed after the two items are secured (formally fixed). This prevents adhesive spillage and effectively prevents design degradation caused by discoloration of residual adhesive over time.

[0096] In addition, if it is a filamentous adhesive 1, it can be combined into a filament by twisting the adhesive 1 with filaments formed of other materials, or by weaving the adhesive 1 with filaments or cloth (including non-woven fabrics and sheets) formed of other materials, thereby achieving functional integration.

[0097] Furthermore, when applying adhesives to the objects being bonded (the adherends), the filamentous adhesive can be used as a barrier material to prevent the adhesive from spilling out. For example, the barrier material can be used to prevent the spillage of sealing resin used in the bonding of optical panels. When the filamentous adhesive is used as a barrier material, it can be peeled off or left in place after the adhesive has cured.

[0098] It should be noted that the present invention is not limited to the embodiments described above, and can be appropriately modified and improved. Furthermore, the material, shape, size, number, and arrangement of the constituent elements in the above embodiments are optional and not limited, as long as they achieve the present invention. The above embodiments show an example of the adhesive attaching device 100 attaching a filamentous adhesive 1, but the adhesive is not limited to a filamentous form. The adhesive attaching device 100 can also attach an adhesive 1 having a long and flat shape. As described above, the greater the ratio of the length of the major axis to the length of the minor axis in the cross-sectional shape of the adhesive 1, the flatter the shape of the adhesive 1 becomes. A typical example of an adhesive 1 having a flat shape is an adhesive tape, in which an adhesive layer is provided on one or both sides of the core material. The adhesive tape preferably has a release liner covering at least a portion of the adhesive layer. When using an adhesive with a release liner, the release liner is peeled off from the adhesive layer before or after the adhesive is attached to the object.

[0099] Here, the features of the adhesive bonding apparatus and adhesive bonding method according to the embodiments of the present invention described above are briefly summarized in [1] to

[10] below.

[0100] [1] An adhesive attachment device (100) for attaching an adhesive (1) to an object, the adhesive attachment device (100) comprising: Main body (10); A rotating body (20) that can rotate relative to one end of the aforementioned main body functions as a pressing part for pressing the aforementioned adhesive onto the aforementioned object; and The guide part (30) restricts the movement range of the aforementioned adhesive body within the width of the aforementioned rotating body in the direction of the rotation axis. When the aforementioned width of the aforementioned rotating body is set as X and the shortest distance between the aforementioned rotating body and the aforementioned guide portion is set as Y, X≥Y.

[0101] According to the adhesive attachment device described in [1], the shortest distance between the rotating body and the guide is set to be less than or equal to the width of the rotating body, and the guide is positioned close to the rotating body. Therefore, even at the rotating body where the adhesive is finally pressed and attached, the limiting accuracy of the adhesive's movement range based on the guide can be substantially maintained, and the deterioration of the adhesive's attachment accuracy can be suppressed.

[0102] [2] As described in [1], the adhesive attachment device, wherein the surface free energy γ of the outermost surface of the aforementioned rotating body is <40 [mJ / m 2 ].

[0103] According to the adhesive attachment device described in [2], the surface free energy of the adhesive body pressed against the rotating body of the object is less than a specified value, thus inhibiting the adhesive body from adhering to the rotating body and smoothly delivering the adhesive body.

[0104] [3] An adhesive attachment device as described in [1] or [2], wherein the outermost surface of the aforementioned rotating body is at least one of silicone resin, fluororesin, polyolefin resin and surface-treated metal.

[0105] According to the adhesive attachment device described in [3], the adhesive is pressed onto the outermost surface of the rotating body of the object and is formed of a material with low surface free energy, thus inhibiting the adhesion of the adhesive to the rotating body and smoothly delivering the adhesive.

[0106] [4] An adhesive attachment device as described in any one of [1] to [3], wherein the aforementioned guide portion has an opening shape (36) through which the aforementioned adhesive can be inserted.

[0107] According to the adhesive attachment device described in [4], the opening shape of the guide portion can restrict the movement of the adhesive while allowing the adhesive to be delivered smoothly.

[0108] [5] The adhesive attachment device as described in any one of [1] to [4], wherein the width of the aforementioned rotating body is 5 mm or less.

[0109] According to the adhesive attachment device described in [5], the range of motion of the adhesive can be limited to a suitable range.

[0110] [6] An adhesive attachment device as described in any one of [1] to [5], wherein the aforementioned guide portion includes a linear member (34) having a V-shaped portion (34b), a U-shaped portion or a straight portion (34a).

[0111] According to the adhesive attachment device described in [6], the linear member of the guide portion can smoothly deliver the adhesive while guiding its movement.

[0112] [7] The adhesive attachment device as described in [6], wherein the aforementioned guide portion has the aforementioned linear member and a support (32) supporting the aforementioned linear member.

[0113] According to the adhesive attachment device described in [7], the linear member is stably fixed by the support, thus enabling the adhesive to be delivered smoothly.

[0114] [8] The adhesive attachment device as described in [6], wherein the aforementioned guide portion has the aforementioned linear member and a pair of supports (32) supporting the two ends of the aforementioned linear member. The opposing portions of the aforementioned linear member and the aforementioned pair of supports limit the aforementioned range of movement of the aforementioned adhesive within the aforementioned width.

[0115] According to the adhesive attachment device described in [8], the adhesive can be smoothly delivered while limiting the range of movement of the adhesive to a suitable range by means of the opposing parts of the linear member and a pair of supports.

[0116] [9] An adhesive attachment apparatus as described in any one of [1] to [8], wherein a filamentous adhesive is attached to the object as the aforementioned adhesive.

[0117] According to the adhesive attachment device described in [9], filamentous adhesive is used as the adhesive, so the adhesive can be successfully attached even to narrow parts of the object.

[0118]

[10] An adhesive application method wherein the adhesive is applied to the object using any one of [1] to [9].

[0119] According to the adhesive application method described in

[10] , in the adhesive application apparatus used, the shortest distance between the rotating body and the guide is set to be less than or equal to the width of the rotating body, and the guide is positioned close to the rotating body. Therefore, even at the rotating body where the adhesive is finally pressed and applied, the limiting accuracy of the movement range of the adhesive based on the guide can be substantially maintained, and the deterioration of the adhesive application accuracy can be suppressed.

[0120] Various embodiments have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to these examples. Those skilled in the art will obviously be able to conceive of various modifications or alterations within the scope of the claims, and these will also fall within the technical scope of the present invention. Furthermore, the constituent elements of the above embodiments can be arbitrarily combined without departing from the spirit of the invention.

[0121] It should be noted that this application is based on Japanese patent application (Japanese Patent Application No. 2023-170249) filed on September 29, 2023, the contents of which are incorporated herein by reference.

[0122] Industrial availability According to the present invention, the degradation of the adhesion accuracy of the adhesive can be suppressed. The present invention can be used as an adhesive application device that can be operated by hand, or as an adhesive application device such as a multi-joint robotic arm or a fixed type, or as an adhesive application method using such adhesive application devices.

[0123] Explanation of reference numerals in the attached figures 1. Adhesive 1a core material 1b Adhesive layer 10 main body 11. Front end 12. The other end 13 batteries 14 Supporting beam section 15 motors 16 Micro switches 17. Coil body 18 guide rollers 20 Rotating body (pressing part) 30 Guiding Department 32 Support body 34. Linear components 34a Straight section 34b V-shaped part (U-shaped part) 36. Opening shape 40 Sending Institutions 41 Drive gear 42 First Gear 43 Second Gear 44 Third Gear 45. Fourth Gear 46. ​​Fifth Gear 47. The 6th gear 48 slots 100 Adhesive Attachment Device R Adhesive path W object

Claims

1. An adhesive attachment apparatus for attaching an adhesive to an object, the adhesive attachment apparatus comprising: main body; A rotating body, which is rotatable relative to one end of the main body, functions as a pressing part for pressing the adhesive onto the object; and The guide portion restricts the movement range of the adhesive body within its width along the rotation axis of the rotating body. When the width of the rotating body is set as X and the shortest distance between the rotating body and the guide is set as Y, X≥Y.

2. The adhesive attachment device as described in claim 1, wherein, The surface free energy γ of the outermost surface of the rotating body is <40 [mJ / m 2 ].

3. The adhesive attachment device as described in claim 1, wherein, The outermost surface of the rotating body is at least one of silicone resin, fluororesin, polyolefin resin, and surface-treated metal.

4. The adhesive attachment device as described in claim 1, wherein, The guide portion has an opening shape that allows the adhesive to be inserted.

5. The adhesive attachment device as described in claim 1, wherein, The width of the rotating body is less than 5 mm.

6. The adhesive attachment device as claimed in claim 1, wherein, The guide portion includes a linear member having a V-shaped portion, a U-shaped portion, or a straight portion.

7. The adhesive attachment device as claimed in claim 6, wherein, The guide portion has the linear member and a support body that supports the linear member.

8. The adhesive attachment device as claimed in claim 6, wherein, The guide portion has the linear member and a pair of supports supporting both ends of the linear member. The opposing portions of the linear member and the pair of supports limit the range of movement of the adhesive within the width.

9. The adhesive attachment device as claimed in claim 1, wherein, As the adhesive, a filamentous adhesive is attached to the object.

10. An adhesive attachment method, wherein, The adhesive is attached to the object using the adhesive attachment device according to any one of claims 1 to 9.

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