Adhesive body attachment device and adhesive body attachment method

Abstract

This adhesive body attachment device (100) for pressing an adhesive body (2) against an object while delivering the adhesive body (2) from a wound body (11) comprises: a delivery assist mechanism (20) that applies an external force in a delivery direction to the adhesive body (2) delivered from the wound body (11); a pressing part (12) that presses the delivered adhesive body (2) against an object (W); and a detection unit (30) that detects whether or not a portion of the adhesive body (2) is at a position deviated from a prescribed path for conveying the adhesive body (2) from the delivery assist mechanism (20) to the pressing part (12) between the delivery assist mechanism (20) and the pressing part (12). The delivery assist mechanism (20) applies the external force in the delivery direction to the adhesive body (2) when the detection unit (30) detects that a part of the adhesive body (2) is not located at a position deviated from the prescribed path.

Description

Adhesive body pasting device and adhesive body pasting method

[0008] ,

[0001] The present invention relates to an adhesive body pasting device and an adhesive body pasting method.

[0002] Devices for pasting an adhesive body such as an adhesive sheet or an adhesive tape onto various adherents such as metal, glass, wood, paper, cardboard, plastic materials, etc. are known. Such devices facilitate the pasting of the adhesive body onto the adherent and improve work efficiency.

[0003] However, when using an adhesive body without a release liner in a rolled-up form in a pasting device, a force to peel the adhesive body from the wound body acts on the adhesive body, and tension is generated in the adhesive body near the pressing portion. Therefore, it is difficult to paste the adhesive body accurately and smoothly.

[0004] Patent Document 1 discloses a filamentous adhesive pasting device that sandwiches and pulls a filamentous adhesive with two rollers to pay out the filamentous adhesive in a rolled-up form and enables accurate pasting on an arbitrary path.

[0005] Japanese Patent Application Laid-Open No. 2021-161405

[0006] In the pasting device of Patent Document 1, when paying out the adhesive body from the wound body, since the adhesive body is sandwiched by rollers, the adhesive body may be deformed, causing appearance defects and quality defects, and it may not be possible to paste accurately and smoothly.

[0007] The present invention has been made in view of the above circumstances, and its object is to provide an adhesive body pasting device and an adhesive body pasting method that can maintain the adhesive body at low tension and paste it smoothly and accurately.

[0008] One aspect of the present invention has the following configuration: An adhesive application device for applying an adhesive material to an object while unwinding it from a winding body, comprising: an assist mechanism that applies an external force in the unwinding direction to the adhesive material unwinding from the winding body; a pressing unit that presses the unwinded adhesive material against the object; and a detection unit that detects whether a part of the adhesive material is in a position outside a predetermined path for transporting the adhesive material from the assist mechanism to the pressing unit, wherein the assist mechanism applies the external force in the unwinding direction to the adhesive material when the detection unit detects that the part is not in the outside position.

[0009] Another aspect of the present invention comprises the following configuration: A method for applying an adhesive body, in which an adhesive body is unwound from a winding body and pressed against an object, wherein an external force is applied to the adhesive body unwound from the winding body in the unwound direction, the unwound adhesive body is pressed against the object, and between a first position where the external force is applied and a second position where the adhesive body is pressed against the object, it is detected whether a part of the adhesive body is in a position outside a predetermined path for transporting the adhesive body from the first position to the second position, and if it is detected that the part is not in the position outside, the external force is applied to the adhesive body in the unwound direction.

[0010] According to the present invention, the adhesive can be maintained at low tension and applied smoothly and accurately.

[0011] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by referring to the accompanying drawings and reading through the embodiments for carrying out the invention described below (hereinafter referred to as "embodiments").

[0012] Figure 1 shows an example of the configuration of an adhesive application device according to an embodiment of the present invention. Figure 2 is a conceptual diagram of the dispensing assist mechanism of the adhesive application device for detecting loosening of the adhesive, where (a) is a conceptual diagram when the adhesive is not deviating from a predetermined path, and (b) is a conceptual diagram when the adhesive is deviating from a predetermined path. Figure 3 is a side view of the roll of the dispensing assist mechanism, illustrating the travel angle of the adhesive to the roll. Figure 4 shows a trajectory model for evaluating the application accuracy. Figure 5 is a perspective view showing an example of an adhesive.

[0013] Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. Figure 1 is a diagram showing an example of the configuration of an adhesive body application device 100 according to an embodiment of the present invention. The adhesive body application device 100 is a device that dispenses an adhesive body 2, such as a thread-like adhesive, and applies it to an object.

[0014] The adhesive application device 100 has a mounting plate 10 to which various components are attached. The winding body 11 of the adhesive body 2 is attached to the mounting plate 10 via a rotating shaft 13, and the adhesive application device 100 can unwind the adhesive body 2 from the winding body 11 and attach it to the target object W.

[0015] The adhesive application device 100 includes a roller 14 mounted on a mounting plate 10 and a dispensing assist mechanism 20. The adhesive 2 dispensed from the winding body 11 is transported to the dispensing assist mechanism 20 via the roller 14. The dispensing assist mechanism 20 is a device that applies an external force to the adhesive 2 dispensed from the winding body 11 in the dispensing direction. In this example, the dispensing direction is the direction from the winding body 11 toward the roller 14 (upward), as indicated by the arrow in Figure 1.

[0016] Furthermore, the nozzle 15 is attached to the lower edge of the mounting plate 10. The tip of the nozzle 15 functions as a pressing part 12. The nozzle 15 also has the function of guiding the adhesive body 2, which is unwound from the winding body 11, to the pressing part 12. The pressing part 12 has a peripheral wall surrounding an internal space through which the adhesive body 2 can be inserted, and presses the adhesive body 2, which is unwound from the winding body 11 via the roller 14, the unwound assist mechanism 20, and the nozzle 15, against the object W.

[0017] The adhesive application device 100 according to this embodiment includes a detection unit 30 mounted on a mounting plate 10. The detection unit 30 is a device that detects whether a part of the adhesive 2 is located outside a predetermined path that transports the adhesive 2 from the dispensing assist mechanism 20 to the pressing unit 12, between the dispensing assist mechanism 20 and the pressing unit 12. The predetermined path is, for example, the shortest path from the dispensing assist mechanism 20 to the pressing unit 12, and in the example of Figure 1, it is the path shown by a solid line (partially shown by a dashed line) extending from the dispensing assist mechanism 20 to the pressing unit 12. If the adhesive 2 is not outside the predetermined path, it is presumed that high tension is being applied to the adhesive 2.

[0018] Figure 2 is a conceptual diagram of the mechanism for detecting loosening of the adhesive material 2 in the dispensing assist mechanism 20. The dispensing assist mechanism 20 is, for example, a roll provided in the path between the winding body 11 and the pressing part 12. The detection unit 30 observes the detection spot 22 on the roll surface 21 and can detect loosening of the adhesive material 2 if a part of the adhesive material 2 is present at the detection spot 22. The detection spot 22 is the position where the loosened portion of the adhesive material 2 is carried when a part of it loosens, and is located outside the predetermined path described above.

[0019] As shown in Figure 2(a), if the adhesive body 2 is present along the entire predetermined path for transporting it from the dispensing assist mechanism 20 to the pressing section 12, the adhesive body 2 is not loose, and therefore will not be transported to the detection spot 22. Consequently, the detection unit 30 will not detect the adhesive body 2.

[0020] As shown in Figure 2(b), when at least a portion of the adhesive body 2 loosens and is carried to the detection spot 22, which is a position outside the predetermined path, the detection unit 30 can detect the adhesive body 2.

[0021] Then, as shown in Figure 2(a), the dispensing assist mechanism 20 applies an external force to the adhesive body 2 in the dispensing direction when the detection unit 30 detects that a part of the adhesive body 2 is not outside the predetermined path. In other words, the dispensing assist mechanism 20 applies an external force in the dispensing direction when the adhesive body 2 is not loose enough to reach the detection spot 22 and is subjected to high tension.

[0022] As shown in Figure 2(b), when a portion of the adhesive 2 is located outside the predetermined path, the adhesive 2 is said to have low tension between the dispensing assist mechanism 20 and the pressing section 12. On the other hand, as shown in Figure 2(a), when a portion of the adhesive 2 is not located outside the predetermined path, i.e., when it is on the predetermined path, the tension is said to be high. In this case, the dispensing assist mechanism 20 applies an external force so that the adhesive 2 is dispensed in the dispensing direction, thereby loosening the tension of the adhesive 2. Therefore, the adhesive 2 can be maintained at low tension in front of the pressing section 12. Consequently, the adhesive application device 100 can smoothly and accurately apply the adhesive 2.

[0023] In this embodiment, the feed assist mechanism 20 is a roll provided in the path between the winding body 11 and the pressing section 12. This allows the feed assist mechanism 20 to be provided with a simple configuration. This roll may be a drive roll configured to rotate on its own. When the detection unit 30 detects the tension of the adhesive body 2, for example, the drive roll rotates 1 / 4 of a turn counterclockwise in Figure 1, thereby applying an external force to the adhesive body 2 in the feed direction and keeping the adhesive body 2 in front of the pressing section 12 at low tension. If the feed assist mechanism 20 is a drive roll, it can apply an external force to the adhesive body 2 directly by rotating itself.

[0024] The detection unit 30 may be an optical sensor that detects whether or not the adhesive 2 is present at a position outside the predetermined path, i.e., at the detection spot 22 in Figure 2. This allows the detection unit 30 to be provided with a simple configuration. In the case of an optical sensor, it is desirable that the light is projected onto the roll of the feed assist mechanism 20. This makes it possible to detect, using the roll as a reference, that a part of the adhesive 2 is at a position outside the predetermined path. Furthermore, by coloring the roll surface 21 or the adhesive 2 and having the optical sensor irradiate the detection spot 22 with white light, the detection unit 30 can reliably detect the presence of the adhesive 2 within the detection spot 22, i.e., that the adhesive 2 is loose. In particular, by coloring the roll surface 21 or the adhesive 2 in such a way that the contrast difference is large, the stability of detection by the detection unit 30 can be improved. The optical sensor may be configured to irradiate with white LED light and to distinguish the color from the intensity of the RGB components of the wavelength of the reflected light.

[0025] Furthermore, the detection unit 30 may be a through-type laser sensor. By using a through-type laser sensor and detecting obstacles by attenuation of the laser on the receiving side, it is possible to detect that the adhesive body 2 is present at the detection target position. For example, by setting a predetermined path shown by the solid line in Figure 1 as the detection target position directly below the feed assist mechanism 20, and arranging the emitter and receiver so as to sandwich the detection target position, it is possible to detect that the adhesive body 2 is on the predetermined path. Therefore, if the detection unit 30 is a through-type laser sensor, it is possible to detect that the adhesive body 2 is not in a position outside the predetermined path by detecting the adhesive body 2. When a through-type laser sensor is used as the detection unit 30, the timing of detecting the tension of the adhesive body 2 is delayed compared to when an optical sensor is used as the detection unit 30 as shown in Figure 1, so the operational response may not be fast enough. Therefore, it is more advantageous to use an optical sensor as the detection unit 30, but both types of sensors may be used, and can be appropriately selected depending on the adhesion speed of the adhesive body 2, etc.

[0026] Furthermore, the peeling force between the roll of the feed assist mechanism 20 and the adhesive 2 may be 0.05 N or more and 1 N or less. This ensures a balance between the application of external force to the adhesive 2 by the roll and the smooth feed of the adhesive 2. The roll may be made of a resin such as POM (PolyOxyMethylene).

[0027] As shown in Figure 2(b), the optical sensor constituting the detection unit 30 can detect the bending of the adhesive body 2 due to its loosening. This makes it possible to detect typical phenomena associated with the loosening of the adhesive body 2.

[0028] Figure 3 is a side view of the roll of the feed assist mechanism 20, illustrating the travel angle of the adhesive body 2 to the roll. The travel angle θ of the adhesive body 2 is expressed as an angle AOB viewed from the center of the roll, indicating how far the adhesive body 2 adheres to the roll surface 21 before separating from the roll. Point A is the position where the adhesive body 2 separates from the roll when it follows a predetermined path from the roll (feed assist mechanism 20) to the pressing section 12. Point B is the position where the adhesive body 2 separates from the roll when it deviates from the predetermined path after adhering to the roll surface 21. The travel angle θ is 0° when the adhesive body 2 follows the predetermined path, i.e., when points A and B are the same.

[0029] In the adhesive application device 100, the travel angle of the adhesive 2 to the roll is set to, for example, 0° or more and 180° or less. Such a setting can be achieved by adjusting the peeling force between the roll and the adhesive 2. As shown by the solid line in Figure 1, when the travel angle is less than 5° and the adhesive 2 is taut, misalignment is likely to occur during pressing, which may reduce the application accuracy. Therefore, when the detection unit 30 detects that the adhesive 2 is taut, the feed assist mechanism 20 applies an external force to the adhesive 2 in the feed direction so that the travel angle is, for example, 5° or more and 180° or less. By applying an external force to the adhesive 2 in the feed direction in this way, as shown by the dashed line in Figure 1, the adhesive 2 in front of the pressing unit 12 can be maintained at low tension (a moderately loose state), and the adhesive 2 can be applied with high accuracy.

[0030] Figure 4 shows a trajectory model for evaluating the adhesion accuracy. A trajectory L was prepared with an outer diameter of 40 mm, a radius of curvature of 5 mm at the corners, and a radius of 15 mm at the curved section R. Adhesives were applied to this trajectory model using an adhesive application device. The adhesive used was a thread-like adhesive consisting of a PET long fiber core coated with an acrylic adhesive (see Figure 5). The experimental conditions and results for each of Experimental Examples 1 to 5 are shown in Table 1.

[0031] In Experimental Example 1, a thread-like adhesive with a width of 0.45 mm was used. The drive roll (feed-out assist mechanism 20 in Figure 1) was made of POM, the travel angle of the thread-like adhesive to the drive roll (angle AOB in Figure 3) was within 0° to 180°, and the peel force of the thread-like adhesive was 0.25 N. The peel force of the thread-like adhesive is the peel force between the drive roll and the thread-like adhesive. The nozzle had an inner diameter of 1.0 mm. In Experimental Example 2, a thread-like adhesive with a width of 0.80 mm was used. The drive roll was made of POM, the travel angle of the thread-like adhesive to the drive roll was within 0° to 180°, and the peel force of the thread-like adhesive was 0.5 N. The nozzle had an inner diameter of 1.7 mm. In Experimental Example 3, a thread-like adhesive with a width of 0.45 mm was used. The drive roll was made of PTFE (Polytetrafluoroethylene), the travel angle of the thread-like adhesive to the drive roll was between 0° and 180°, and the peel force of the thread-like adhesive was 0.2 N. The nozzle had an inner diameter of 1.0 mm. In Experimental Example 4, a thread-like adhesive with a width of 0.45 mm was used. The drive roll was made of SUS (Steel Use Stainless), the travel angle of the thread-like adhesive to the drive roll was between 180° and 225°, and the peel force of the thread-like adhesive was 2.0 N. The nozzle had an inner diameter of 1.0 mm. In Experimental Example 5, a thread-like adhesive with a width of 0.45 mm was used. The drive roll was made of SIR (Silicone Rubber), the travel angle of the thread-like adhesive to the drive roll was between 0° and 45°, and the peeling force of the thread-like adhesive was 0.05 N. The nozzle had an inner diameter of 1.0 mm.

[0032] The adhesion accuracy was evaluated by observing and measuring the adhesive material attached to the trajectory model using a microscope. At six arrow positions, the amount of deviation between the trajectory L of the trajectory model and the actual adhesion position was measured using a microscope. For evaluation, the maximum value of the seven deviation amounts was used as the adhesion accuracy, and the judgment criteria were that an adhesion accuracy of 0 to 1.0 mm was considered good, and an accuracy exceeding 1.0 mm was considered acceptable.

[0033]

[0034] As shown in Table 1, in all experimental examples 1 to 5, the thread-like adhesive was able to be applied smoothly and accurately. In particular, in experimental examples 1, 2, 3, and 5, where the peeling force between the drive roll and the thread-like adhesive was 0.05 N to 1 N, and the travel angle of the thread-like adhesive to the drive roll was 0° to 180°, the application accuracy was good, ranging from 0 to 1.0 mm. On the other hand, in experimental example 4, where the peeling force between the drive roll and the thread-like adhesive was 2 N, and the travel angle of the thread-like adhesive to the drive roll was 180° to 225°, the application accuracy was 3.0 mm. Although this was not as good as the application accuracy of the other experimental examples, it was still an acceptable level of application accuracy for practical use.

[0035] The above embodiment can be applied to, for example, a multi-joint robot arm having six degrees of freedom or a stationary adhesive application device, but it may also be applied to an adhesive application device that is held and operated by an operator.

[0036] Figure 5 is a perspective view of the adhesive body 2. The structure, materials, etc., of the adhesive body 2 are not particularly limited. The adhesive body 2 may be a thread-like adhesive body as in the embodiment. The thread-like adhesive body consists of, for example, a linear core material 2a and an adhesive layer 2b that covers the longitudinal surface of the core material 2a, and can be smoothly attached to narrow parts of an object.

[0037] Specific examples of applications for thread-like adhesives include fixing cables such as electric wires and optical fibers, LED fiber lights, optical fiber sensors such as FBGs (Fiber Bragg Gratings), various wire materials (linear members) such as threads, strings, and wires, and narrow members in a desired shape. Furthermore, thread-like adhesives can be suitably used for temporary fixing (temporary fastening) of articles, such as temporarily fixing (temporarily securing) one article to the surface of another article.

[0038] If a thread-like adhesive is used, it can be applied smoothly to both items even if they have complex shapes such as curves, curved surfaces, or uneven surfaces, while minimizing overflow, wrinkles, and overlaps. Moreover, it can be applied in a single step, resulting in excellent workability.

[0039] Furthermore, even with easily deformable materials such as fabrics, cloths, and leather that make up textile or leather products, temporary fixing with a thread-like adhesive material can suppress or prevent deformation of the material due to tension, resulting in a good aesthetic appearance after permanent fixing.

[0040] Furthermore, if a thread-like adhesive is used, it is easy to remove the thread-like adhesive 2 from between the two fixed articles after they have been permanently fixed together, as needed. In this way, the excess adhesive can be prevented, and the deterioration of the design due to discoloration of the remaining adhesive over time can be effectively prevented.

[0041] Furthermore, if the adhesive is in the form of a thread, its functionality can be enhanced by twisting it together with threads made of other materials to form a combined thread, or by weaving it with threads or fabrics (including nonwoven fabrics and sheets) made of other materials.

[0042] Furthermore, the filamentous adhesive can be used as a dam material to prevent the adhesive or sealant from overflowing when applying it to the object to be bonded (the substrate). The dam material can be used, for example, to prevent the overflowing of sealing resin used in bonding optical panels. When using the filamentous adhesive as a dam material, the filamentous adhesive may be peeled off after the adhesive or sealant has hardened, or it may be left in place.

[0043] Here, the features of the adhesive body pasting device and the adhesive body pasting method according to the above-described embodiment of the present invention are briefly summarized and listed as follows [1] to [9].

[0044] [1] An adhesive body pasting device (100) that presses an adhesive body (2) against an object while feeding out the adhesive body (2) from a winding body (11) of the adhesive body, the assist mechanism (feeding assist mechanism 20) that applies an external force in the feeding direction to the adhesive body fed out from the winding body, a pressing portion (12) that presses the fed-out adhesive body against the object, and a detection unit (30) that detects whether a part of the adhesive body is at a position deviating from a predetermined path for transporting the adhesive body from the assist mechanism to the pressing portion, between the assist mechanism and the pressing portion, the assist mechanism applies the external force in the feeding direction to the adhesive body when the detection unit detects that the part is not at the deviating position, Adhesive body pasting device.

[0045] According to the above configuration, when a part of the adhesive body is at a position deviating from the predetermined path, it can be said that the adhesive body has a low tension between the assist mechanism and the pressing portion. On the other hand, when a part of the adhesive body is not at a position deviating from the predetermined path, that is, when it is on the predetermined path, it can be said that the tension is high. In this case, since the assist mechanism applies an external force so that the adhesive body is fed out in the feeding direction, the tension of the adhesive body can be relaxed. Therefore, the adhesive body can be maintained at a low tension in front of the pressing portion. Therefore, the adhesive body can be smoothly and accurately pasted.

[0046] [2] The assist mechanism is a roll provided in a path between the winding body and the pressing portion, The adhesive body pasting device according to [1].

[0047] According to the above configuration, the assist mechanism can be provided with a simple configuration.

[0048] [3] The roll is a drive roll configured to be rotatable, The adhesive body pasting device according to [2].

[0049] According to the above configuration, an external force can be directly applied to the adhesive body by the drive roll.

[0050] [4] The adhesive body attachment device according to any one of [1] to [3], wherein the detection unit is an optical sensor that detects whether or not the adhesive body is present at the detached position.

[0051] According to the above configuration, the detection unit can be provided with a simple configuration.

[0052] [5] The adhesive application apparatus according to [2] or [3], wherein the peeling force between the roll and the adhesive is 0.05 N or more and 1 N or less.

[0053] The above configuration ensures a balance between the application of external force to the adhesive material by the roll and the smooth dispensing of the adhesive material.

[0054] [6] The adhesive application device according to [2] or [3], wherein the angle of the adhesive to the roll is 0° or more and 180° or less.

[0055] According to the above configuration, the adhesive material in front of the pressing part can be kept at low tension, and the adhesive material can be applied with high precision.

[0056] [7] The adhesive application device according to [4], wherein the assist mechanism is a roll provided in the path between the winding body and the pressing part, and the optical sensor emits light onto the roll.

[0057] With the above configuration, it is possible to detect, using the roll as a reference, that a portion of the adhesive material is located outside the predetermined path.

[0058] [8] The adhesive application device according to [4] or [7], wherein the optical sensor detects the bending of the adhesive.

[0059] With the above configuration, it is possible to detect typical phenomena associated with the loosening of the adhesive.

[0060] [9] A method for applying an adhesive body, wherein the adhesive body (2) is unwound from a winding body (11) of the adhesive body and pressed against an object, wherein an external force is applied to the adhesive body unwound from the winding body in the unwound direction, the unwound adhesive body is pressed against the object, and between a first position where the external force is applied (position of the unwound assist mechanism 20) and a second position where the adhesive body is pressed against the object (position of the pressing part 12), it is detected whether a part of the adhesive body is in a position outside the predetermined path for transporting the adhesive body from the first position to the second position, and if it is detected that the part is not in the position outside the position, the external force is applied to the adhesive body in the unwound direction.

[0061] According to the above configuration, if a portion of the adhesive is located outside the predetermined path, the adhesive can be said to have low tension between the first and second positions. On the other hand, if a portion of the adhesive is not located outside the predetermined path, i.e., if it is on the predetermined path, the tension can be said to be high. In this case, an external force is applied so that the adhesive is fed out in the feeding direction, which can loosen the tension of the adhesive. Therefore, the adhesive can be kept at low tension before the second position where it is pressed against the object. Consequently, the adhesive can be attached smoothly and accurately.

[0062] Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to these examples. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these will naturally also fall within the technical scope of the present invention. Furthermore, the components of the above embodiments may be combined in any way without departing from the spirit of the invention.

[0063] This application is based on a Japanese patent application (Patent Application No. 2024-192168) filed on October 31, 2024, the contents of which are incorporated herein by reference.

[0064] According to the present invention, adhesive materials can be applied smoothly and with high precision. The present invention can be used as an adhesive material application device such as a multi-joint robot arm or a stationary type, or an adhesive material application device operated by an operator holding it in their hand, or as an adhesive material application method using such adhesive material application devices.

[0065] 2 Adhesive body 10 Mounting plate 11 Winding body 12 Pressing part 13 Rotating shaft 14 Roller 20 Feed assist mechanism 30 Detection part 100 Adhesive body application device

Claims

1. An adhesive application device for applying an adhesive material to an object while unwinding the adhesive material from a winding body, comprising: an assist mechanism that applies an external force in the unwinding direction to the adhesive material unwinded from the winding body; a pressing unit that presses the unwinded adhesive material against the object; and a detection unit that detects whether a part of the adhesive material is in a position outside a predetermined path for transporting the adhesive material from the assist mechanism to the pressing unit, wherein the assist mechanism applies the external force in the unwinding direction to the adhesive material when the detection unit detects that the part is not in the outside position.

2. The adhesive application device according to claim 1, wherein the assist mechanism is a roll provided in the path between the winding body and the pressing part.

3. The adhesive application device according to claim 2, wherein the roll is a drive roll configured to rotate on its own.

4. The adhesive body application device according to claim 1, wherein the detection unit is an optical sensor that detects whether or not the adhesive body is present at the detached position.

5. The adhesive application device according to claim 2, wherein the peeling force between the roll and the adhesive is 0.05 N or more and 1 N or less.

6. The adhesive application device according to claim 2, wherein the angle at which the adhesive material travels to the roll is 0° or more and 180° or less.

7. The adhesive application device according to claim 4, wherein the assist mechanism is a roll provided in the path between the winding body and the pressing part, and the optical sensor emits light onto the roll.

8. The adhesive application device according to claim 4, wherein the optical sensor detects the bending of the adhesive.

9. A method for applying an adhesive body, comprising unwinding the adhesive body from a winding body and pressing it against an object, wherein an external force is applied to the adhesive body unwinding from the winding body in the unwinding direction, the unwinded adhesive body is pressed against the object, and between a first position where the external force is applied and a second position where the adhesive body is pressed against the object, it is detected whether a part of the adhesive body is outside a predetermined path for transporting the adhesive body from the first position to the second position, and if it is detected that the part is not outside the path, the external force is applied to the adhesive body in the unwinding direction.

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