Winding device

Abstract

To provide a winding device capable of applying adhesive to the entire circumference of a copper wire and preventing the coating from being scraped off by a guide roller.SOLUTION: An adhesive is supplied to an applicator 20, and a copper wire 11 passes through a through-hole of the applicator 20. During this passage, the adhesive is evenly applied to the entire circumference of the copper wire 11. The applicator 20 is positioned downstream of the guide roller 45. The guide roller 45 does not scrape off the coating film.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a winding device that applies adhesive to a copper wire and winds the copper wire around a bobbin. [Background technology]

[0002] Motor windings are one of the elements that make up a motor. In motor windings, copper wire is tightly wound around a bobbin. If the copper wire becomes misaligned, it will have a negative impact on motor performance. For this reason, the copper wire has traditionally been fixed in place with adhesive.

[0003] For example, varnish is stored in a tank and the wound copper wire is immersed in this varnish. Once the varnish has soaked into the fine details, it is removed and dried. When the workpiece is lifted, excess varnish drips, and it takes about 24 hours to dry. Therefore, the varnish immersion method wastes varnish and has low productivity, leaving room for improvement.

[0004] Therefore, as an improvement, it has been proposed to apply the adhesive with a brush (see, for example, Patent Document 1 (FIG. 1)).

[0005] Patent Document 1 will be explained with reference to the following figure. FIG. 11 is a diagram illustrating the basic configuration of a conventional winding device. In FIG. 11, when a reel 101 is rotated in a predetermined direction by a main shaft motor 102, a copper wire 103 is wound around the reel 101 from a drum 104 while being guided by a first relay roller 105, a second relay roller 106 and a final relay roller 107.

[0006] A cylinder 108 and a brush 109 are arranged between the second relay roller 106 and the final relay roller 107 , and an appropriate amount of adhesive is dispensed from the cylinder 108 onto the copper wire 103 , and the dispensed adhesive is smoothed by the brush 109 .

[0007] The copper wire 103 is guided by the second relay roller 106 and the final relay roller 107, so it cannot swing left or right between them. The cylinder 108 and the brush 109 are located in this position where the wire cannot swing, so the action, i.e., the behavior, of the brush 109 is constant. As a result, the technique of Patent Document 1 has the effect of making it possible to make the thickness of the adhesive applied constant.

[0008] However, it has been found that the technology of Patent Document 1 does not provide sufficient effects under certain conditions. The specific condition is that adhesive is applied to the entire circumference of the cross section of the copper wire 103. In the area of ​​the reel 101, it may be required to apply adhesive to the entire circumference of the copper wire 103 in order to strengthen the adhesive performance (fixing performance) between adjacent copper wires 103.

[0009] In the technique of Patent Document 1, the adhesive is applied only to approximately half the circumference of the copper wire 103, and therefore improvement is required. Therefore, the inventors considered adding a cylinder 108B and a brush 109B shown by imaginary lines in Figure 11. This would allow adhesive to be applied to the entire circumference of the copper wire 103.

[0010] However, a problem occurs in that part of the coating film discharged by the cylinder 108B and leveled by the brush 109B is scraped off by the final relay roller 107. Therefore, it was found that this improvement plan was insufficient.

[0011] Therefore, as an alternative technology to the above-mentioned improvement proposal, a winding device is desired that can apply adhesive to the entire circumference of the copper wire 103 and that does not have the coating film scraped off by the final relay roller 107. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Patent No. 7064108 Summary of the Invention [Problem to be solved by the invention]

[0013] An object of the present invention is to provide a winding device that can apply adhesive to the entire circumference of a copper wire and that prevents the coating from being scraped off by a guide roller that corresponds to the final relay roller. [Means for solving the problem]

[0014] The inventors discovered that if an applicator has a tapered hole, it is possible to apply adhesive to the entire circumference of a copper wire by supplying an appropriate amount of adhesive to the tapered hole and passing the copper wire through the tapered hole. In addition, in FIG. 11, it was found that by placing the applicator downstream of the final relay roller 107, i.e., between the final relay roller 107 and the reel 101, the coating film is prevented from being scraped off by the final relay roller 107.

[0015] However, if the bobbin 101 has a rectangular cross section (a square cross section or a rectangular cross section), the copper wire 103 is displaced more significantly up and down in the drawing than if it had a round cross section, and the copper wire 103 comes into strong contact with the tapered hole. If the degree of this contact exceeds the allowable range, it will cause problems with the running of the copper wire 103.

[0016] Therefore, we considered a structure that would allow the applicator to move up and down. First, we predicted or detected the up and down movement of the copper wire 103, and then considered using an actuator to forcibly move the applicator up and down based on this predicted or detected information. It is expected that the center of the copper wire 103 can be aligned with the center of the tapered hole, and a coating film of a uniform thickness can be formed all around the copper wire 103. However, it has been found that the vertical movement of the copper wire 103 contains irregular elements, making it difficult to predict and detect. In addition, there is also the drawback of increased procurement costs for the actuators and sensors.

[0017] In order to solve this problem, the inventors came up with the idea of ​​using the copper wire 103 as a drive source for moving the applicator up and down. This has the advantage that no actuator or sensor is required. However, when the copper wire 103 moves upward and lifts the applicator, the coating film on the upper side of the copper wire 103 becomes thin and the coating film on the lower side becomes thick. When the copper wire 103 moves downward, the coating film on the lower side becomes thin and the coating film on the upper side becomes thick. In other words, the new idea changes the thickness of the coating, and it is necessary to consider whether this change is acceptable.

[0018] The thickness of the coating film will be explained again with reference to Figures 1(a) and 1(b). Note that the copper wire 103 will be read as the copper wire 11. As shown in FIG. 1(a), in a certain portion of the copper wire 11, the coating film 12 on the upper side is thin and the coating film 12 on the lower side is thick. As shown in FIG. 1(b), in another portion of the copper wire 11, the coating film 12 on the lower side is thin and the coating film 12 on the upper side is thick.

[0019] However, as shown in Figure 1(c), when the wire is wound onto the reel 14, the adhesive 15 is pushed by the adjacent copper wires 11 and moves. Apparently, fluidization occurs, with part of the thick coating film 12 flowing into the thin coating film 12, and the adhesive fills the spaces between the copper wires 11. Therefore, it was confirmed that the difference in thickness of the coating film 12 shown in Figures 1(a) and 1(b) is acceptable.

[0020] Based on the above findings, we have developed a winding device that uses an applicator with a tapered hole, places this applicator between the final relay roller and the winding frame, and uses a copper wire as a drive source to enable the applicator to move up and down. Note that the up and down movement can also be left and right movement (horizontal swing). The completed winding device has the following configuration:

[0021] The invention according to claim 1 is a winding device that winds a copper wire guided by a cylindrical guide around a winding frame that is rotated by a main shaft motor, The winding device includes an adhesive applicator between the cylindrical guide and the reel, the adhesive applicator applying adhesive to the copper wire, The applicator has a through hole through which the copper wire passes, the outlet of the through hole having a hole diameter corresponding to the outer diameter of the copper wire, and the inlet of the through hole is not narrowed and has a larger diameter than the outlet, Furthermore, the applicator is characterized in that it is supported so as to be movable when pushed by the copper wire which sways as the winding radius of the reel changes.

[0022] The invention according to claim 2 is the winding device according to claim 1, When a viscosity of 5 to 100 Pa·s is defined as medium viscosity and a viscosity lower than that of medium viscosity is defined as high viscosity, the adhesive is characterized in that it is a thermosetting adhesive that has medium or high viscosity and does not harden at room temperature.

[0023] The invention according to claim 3 is the winding device according to claim 1, The through hole is a tapered hole.

[0024] The invention according to claim 4 is the winding device according to claim 1, The winding device further includes a bracket that is disposed a predetermined distance away from the reel and swings around a support shaft that is disposed parallel to the rotation axis of the reel, The applicator and the cylindrical guide are supported by the bracket.

[0025] The invention according to claim 5 is the winding device according to claim 1, The winding device further includes a bracket that is disposed a predetermined distance away from the reel and swings around a support shaft that is disposed parallel to the rotation axis of the reel, The bracket supports the cylindrical guide, and the cylindrical guide supports the applicator.

[0026] The invention according to claim 6 is the winding device according to claim 1, The winding device further includes a bracket that is disposed a predetermined distance away from the reel and swings around a support shaft that is disposed parallel to the rotation axis of the reel, The applicator is supported by the bracket. [Effects of the Invention]

[0027] In the invention according to claim 1, the applicator has a through hole, and adhesive is supplied to this through hole. Then, a copper wire is passed through the through hole. Because the adhesive collects at the outlet of the through hole, the adhesive is applied to the entire circumference of the copper wire. In addition, because the applicator is positioned closer to the reel than the guide roller, the coating film is not scraped off by the guide roller. Therefore, the present invention provides a winding device that can apply adhesive to the entire circumference of a copper wire without the coating being scraped off by the guide roller.

[0028] In the invention according to claim 2, the adhesive is a thermosetting adhesive that has a medium or high viscosity and does not harden at room temperature. Because the viscosity is medium or high, there is no risk of the adhesive leaking from the opening of the applicator.

[0029] In the invention according to claim 3, the through hole is a tapered hole. The through hole may be a multi-step hole, but in the case of a multi-step hole, the adhesive does not smoothly flow to the outlet. In contrast, with a tapered hole, the adhesive flows smoothly to the outlet.

[0030] In the invention according to claim 4, a swingable bracket is provided, and the bracket supports the applicator and the cylindrical guide. The bracket is large and heavy, but allows the applicator and cylindrical guide to move together.

[0031] In the invention according to claim 5, a swingable bracket is provided, and the bracket supports the cylindrical guide. The applicator is supported by the cylindrical guide. The bracket can be made smaller and lighter.

[0032] In the invention according to claim 6, a swinging bracket is provided, and the applicator is supported by this bracket. The bracket can be made even smaller and lighter. [Brief explanation of the drawings]

[0033] [Figure 1](a) and (b) are diagrams for explaining the shape of the coating thickness, and (c) is a diagram for explaining the shape of the winding. [Figure 2] 1(a) to 1(c) are cross-sectional views of an applicator according to the present invention, and 1(d) to 1(f) are diagrams showing the shape of the inlet. [Figure 3] 1(a) to 1(c) are diagrams illustrating the arrangement of adhesive dispensers relative to an applicator. [Figure 4] 1(a) to 1(c) are diagrams illustrating the correlation of the applicator with respect to the reel. [Figure 5] 1(a) to 1(d) are diagrams for explaining the reason for making the diameter of the inlet of the applicator large. [Figure 6] FIG. 1 is a plan view of a winding device according to the present invention. [Figure 7] FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6. [Figure 8] 10(a) to 10(c) are diagrams illustrating a modified example of the winding device. [Figure 9] 10(a) and 10(b) are diagrams illustrating a further modified example of the winding device. [Figure 10] 10A and 10B are diagrams illustrating a further modified example of the winding device. [Figure 11] FIG. 1 is a diagram illustrating a basic configuration of a conventional winding device. DETAILED DESCRIPTION OF THE INVENTION

[0034] An embodiment of the present invention will be described below with reference to the accompanying drawings. [Example]

[0035] [Applicator] As shown in Figure 2(a), the applicator 20 has a through-hole 21 through which the copper wire 11 passes. This through-hole 21 is a tapered hole, with an outlet 22 having a small diameter and an inlet 23 having a large diameter. As shown in Figure 2(b), the applicator 20 has a through-hole 21 through which the copper wire 11 passes. This through-hole 21 is a multi-step hole, with an outlet 22 having a small diameter and an inlet 23 having a large diameter.

[0036] As shown in Figure 2(c), the applicator 20 has a through hole 21 through which the copper wire 11 passes. This through hole 21 is a straight hole with one end closed by an end plate, and an outlet 22 is provided in the end plate, with the outlet 22 having a small diameter and the inlet 23 having a large diameter. It should be noted that the inlet 23 is not throttled in any of FIGS. 2(a) to 2(c).

[0037] In addition to the round hole shown in FIG. 2(d), the inlet 23 may be an elliptical hole as shown in FIG. 2(e) or an oblong hole as shown in FIG. 2(f). 6, which will be described later, the slide base 47 is moved by the feed motor 53. If the copper wire 11 swings horizontally as a result of this movement, this swing can be more preferably absorbed by the elliptical or oblong hole.

[0038] [Correlation between applicator and adhesive dispenser] As shown in Figure 3(a), adhesive dispenser 30 has a bendable needle 31 at its tip. In addition to through-hole 21, applicator 20 has needle insertion hole 24 that leads to through-hole 21 from the outside, and fixing bolt 25 that fixes needle 31 inserted into needle insertion hole 24. By fastening with a fixing bolt 25, the applicator 20 is mechanically coupled to the adhesive dispenser 30.

[0039] [glue] The adhesive 15 is a thermosetting adhesive that does not harden at room temperature, and has a medium viscosity (5 to 100 Pa·s) or a high viscosity (100 Pa·s or higher).

[0040] In FIG. 3(a), if the adhesive 15 supplied to the through-hole 21 via the needle 31 has a low viscosity, it may leak from the inlet 23. If the adhesive has a medium or high viscosity, it has low fluidity and is carried by the copper wire 11 toward the outlet 22. As a result, it will not leak from the inlet 23. The adhesive 15 is blocked at the outlet 22 and adheres to the outer surface of the copper wire 11. As a result, the copper wire 11 is obtained with the adhesive 15 evenly applied all over its periphery.

[0041] [Through hole exit diameter] The through-hole 21 has an outlet 22 set to a hole diameter that is the outer diameter D of the copper wire 11 plus a gap t for applying adhesive. That is, the outlet 22 is set to a hole diameter that corresponds to the outer diameter of the copper wire 11.

[0042] 3(b), a sufficiently long flexible tube 32 may be interposed between the applicator 20 and the adhesive dispenser 30. With this structure, the adhesive dispenser 30 does not need to move together with the applicator 20, and the adhesive dispenser 30 can be fixed.

[0043] Alternatively, as shown in FIG. 3(c), the needle 31 may be disposed outside the inlet 23 without being attached to the applicator 20. Therefore, the adhesive dispenser 30 can be positioned arbitrarily relative to the applicator 20.

[0044] However, the configuration of FIG. 3(a) has the advantage that the procurement cost of the flexible tube 32 can be reduced and the device can be made more compact in the left-right direction of the drawing. Furthermore, the applicator 20 shown in FIG. 3(c) has the advantage of being compact.

[0045] [Reasons for moving applicators] 4(a), when the reel 14 has a square (or rectangular) cross section, the winding radius of the reel 14 changes as shown by R1 and R2. The copper wire 11 sways in accordance with this change. If the applicator 20 were unable to move up and down, the copper wire 11 would press the applicator 20 hard, causing wear at the outlet 22 of the applicator 20 and damaging the applicator 20.

[0046] As shown in Figure 4(b), a bracket 36 is prepared that is disposed a certain distance from the reel 14 and swings (rotates) around a support shaft 35 that is disposed parallel to the rotation shaft 34 of the reel 14, and the applicator 20 is attached to this bracket 36. When the copper wire 11 rises, the copper wire 11 pushes up the outlet 22, causing the bracket 36 to rotate clockwise in the figure, allowing the applicator 20 to rise. When the copper wire 11 descends, the copper wire 11 pushes down the outlet 22, causing the bracket 36 to rotate counterclockwise in the figure, allowing the applicator 20 to descend. This results in the configuration shown in Figures 1(a) and 1(b).

[0047] As shown in FIG. 4(c), the applicator 20 may be movably supported by a guide 37.

[0048] [Reason for making the applicator inlet larger in diameter] 5(a) shows a comparative example, in which the inlet 112 of the tapered hole 111 of this applicator 110 is also narrowed. This makes it difficult for the adhesive 113 to leak from the inlet 112, and the tapered hole 111 is filled with the adhesive. By adopting this structure, there is an advantage that the adhesive 113 can be evenly applied to the copper wire 114. In addition, because the inlet 112 is narrowed, there is an advantage that the adhesive 113 is less likely to leak, and a low-viscosity adhesive can be used.

[0049] Figure 5(b) is a diagram of the operation of Figure 5(a), except that the adhesive 113 has been omitted for clarity. When the copper wire 114 swings upward, it bends as it hits the entrance 112 and the exit 115. If the degree of bending increases, it will cause problems in the running of the copper wire 114. That is, since the copper wire 114 comes into contact with the entrance 112 and the exit 115 at two points, the frictional resistance due to the contact increases.

[0050] It is known that the coefficient of friction on a dry surface is large and that on a wet surface is small. The coefficient of friction on a dry surface is said to be about 10 times that on a wet surface. As shown in Figure 5(a), the coefficient of friction is small at the outlet 115 because the copper wire 114 is wet with adhesive 113. In contrast, the coefficient of friction is large at the inlet 112 because the copper wire 114 is not wet with adhesive 113. As a result, when the copper wire 114 vibrates, it is difficult for the copper wire 114 to travel smoothly.

[0051] 5(c), the adhesive cannot be stored because the inlet 23 of the through-hole 21 is not narrowed. Low-viscosity adhesive may leak from the inlet 23. However, as shown in Fig. 5(d), the curved copper wire 11 hits the outlet 22 but does not hit the inlet 23. Since it only contacts the outlet 22, the frictional resistance due to contact is reduced.

[0052] In addition, the coefficient of friction on a wet surface is applied at the outlet 22, and since this coefficient of friction is small, the frictional resistance at the outlet 22 is significantly small. As a result, although the copper wire 11 vibrates up and down and comes into contact with the applicator 20, smooth running is maintained. As described above, by making the inlet 23 large in diameter without restricting it, a special effect is achieved.

[0053] A winding device 40 including the above-described reel 14, applicator 20, adhesive dispenser 30, and bracket 36 will be described with reference to FIGS. 6 and 7. FIG. As shown in FIG. 6, the winding device 40 includes a reel 14, a main shaft motor 41 that rotates the reel 14 in a predetermined direction, a support shaft 35 that is arranged parallel to the rotation axis 34 of the reel 14, a bracket 36 that is supported by the support shaft 35 and extends toward the reel 14, and an applicator 20, a cylindrical guide 43, a guide roller 45, and an adhesive dispenser 30 that are supported by the bracket 36.

[0054] FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. As shown in FIG. 7, a slide base 48 is placed on a side guide 47, a stay 49 stands up from this slide base 48, and the support shaft 35 is rotatably supported by this stay 49. A nut 51 is attached to the slide base 48, and a feed screw 52 is screwed into this nut 51.

[0055] 6, when a feed motor 53 rotates a feed screw 52, ​​a slide base 48 moves back and forth while being guided by a side guide 47. By this movement, a plurality of copper wires 11 are wound around the reel 14. During this reciprocating movement, the cylindrical guide 43 holds the copper wire 11 so that the copper wire 11 does not come off the guide roller 45.

[0056] Furthermore, after a predetermined number of turns of copper wire 11 have been wound around reel 14, adhesive dispenser 30 stops dispensing adhesive. That is, adhesive dispenser 30 is controlled to intermittently start and stop dispensing adhesive. The rotation of the reel and the discharge (supply) of adhesive are synchronized, and intermittent operation prevents excess adhesive from accumulating, allowing for the desired winding.

[0057] 7, since the reel 14 has a rectangular cross section, the winding radius changes as it rotates. This change causes the copper wire 11 to vibrate. Following this vibration, the applicator 20 swings (rotates) around the support shaft 35 together with the cylindrical guide 43, guide roller 45, and bracket 36.

[0058] [Example of modified winding device] Next, a modified example of the winding device 40 will be described. 8(a) is a plan view similar to FIG. 6, FIG. 8(b) is a cross-sectional view similar to FIG. 7, and FIG. 8(c) is an enlarged view of part c in FIG. 8(b). 8(c), one end of the cylindrical guide 43 is extended and screw-connected to the applicator 20. This connection allows the cylindrical guide 43 to support the applicator 20. As a result, the bracket 36 can be made compact, as shown in FIGS. 8(a) and 8(b). The other components are the same as those in FIGS. 6 and 7, so the reference numerals from FIGS. 6 and 7 are used and detailed explanations are omitted.

[0059] [Further modification of the winding device] Next, a further modification of the winding device 40 will be described. 9(a) is a plan view similar to FIG. 6, and FIG. 9(b) is a cross-sectional view similar to FIG. As shown in FIG. 9(b), the slide base 48 is extended to support the cylindrical guide 43 and the guide roller 45. As shown in FIG. 9( a ), a swinging bracket 36 carries the applicator 20 and adhesive dispenser 30 . Although the slide base 48 becomes large, the bracket 36 can be made small and lightweight.

[0060] 10, a flexible tube 32 is interposed between the applicator 20 and the adhesive dispenser 30, so that the adhesive dispenser 30 is placed on a slide base 48. In this way, only the applicator 20 may be supported by the bracket 36. The swinging bracket 36 can be made even smaller and lighter.

[0061] In the present invention, the bracket 36 is swung as a drive source for the copper wire 11. The force with which the copper wire 11 pushes the outlet of the applicator 20 is proportional to the mass of the bracket 36. The lighter the bracket 36, the smaller the frictional force due to contact, which reduces the amount of wear and extends the life of the applicator 20. Therefore, reducing the weight of the bracket 36 can provide certain effects.

[0062] The invention described above can be summarized as follows. As shown in FIG. 6, the present invention relates to a winding device 40 that winds a copper wire 11 guided by a cylindrical guide 43 around a reel 14 that is rotated by a spindle motor 41. This winding device 40 includes an applicator 20 between the cylindrical guide 43 and the reel 14 that applies adhesive 15 to the copper wire 11.

[0063] As shown in Figures 2(a) to (c), the applicator 20 has a through hole 21 through which the copper wire 11 passes, and the outlet 22 of this through hole 21 has a hole diameter corresponding to the outer diameter D of the copper wire 11, and the inlet 23 is not narrowed and has a larger diameter than the outlet 22. As shown in Figures 4(a) to (c), the applicator 20 is supported so as to be movable when pressed by the copper wire 11, which sways as the winding radii R1 and R2 of the reel 14 change.

[0064] 3(a) to 3(c), the adhesive 15 supplied to the through-hole 21 is blocked at the outlet 22 of the through-hole 21. As a result, the adhesive 15 comes into contact with the entire periphery of the copper wire 11 evenly. Furthermore, the applicator 20 is disposed downstream of the cylindrical guide 43. A guide roller is disposed upstream of the cylindrical guide 43, so that the coating film is not scraped off by this guide roller.

[0065] Preferably, when a viscosity of 5 to 100 Pa·s is defined as medium viscosity and a viscosity lower than that of medium viscosity is defined as high viscosity, the adhesive 15 is a thermosetting adhesive 15 that has medium or high viscosity and does not harden at room temperature.

[0066] If the viscosity is medium or high, the adhesive 15 moves toward the outlet 22 together with the copper wire 11. As a result, even if the entrance 23 of the through-hole 21 is a large-diameter hole, the adhesive 11 will not leak from this large-diameter hole.

[0067] Preferably, the through hole 21 is a tapered hole. Compared to a stepped hole, a tapered hole allows the adhesive 11 to flow more smoothly toward the outlet 22 along with the copper wire 11, and also allows the adhesive 11 to be applied while being gradually pushed toward the copper wire 11. As a result, a more preferable coating film can be obtained.

[0068] As shown in FIG. 7, the winding device 40 is arranged at a certain distance from the reel 14 and further includes a bracket 36 that swings around a support shaft 35 that is arranged parallel to the rotation shaft 34 of the reel 14, and the applicator 20 and the cylindrical guide 43 are supported by this bracket 36.

[0069] The movement patterns of the applicator 20 and the cylindrical guide 43 can be suitably matched to the vibration of the copper wire 11.

[0070] 8(a) and (b), the winding device 40 is arranged at a certain distance from the reel 14 and further includes a bracket 36 that swings around a support shaft 35 that is arranged parallel to the rotation axis 34 of the reel 14, and the bracket 36 supports the cylindrical guide 43, which in turn supports the applicator 20.

[0071] Since the bracket 36 supports the cylindrical guide 43, and the cylindrical guide 43 supports the applicator 20, the bracket 36 can be made smaller and lighter.

[0072] As shown in Figures 9(a), (b) and 10, the winding device 40 is further provided with a bracket 36 that is arranged a certain distance away from the reel 14 and swings around a support shaft 35 that is arranged parallel to the rotation shaft 34 of the reel 14, and the applicator 20 is supported by this bracket 36.

[0073] Since the bracket 36 supports only the applicator 20, the bracket 36 can be made even smaller and lighter.

[0074] 6 is a plan view, but it may also be a front view. That is, the rotation axis 34 of the reel 14 may be a horizontal axis, or may be a vertical axis or an oblique axis. [Industrial Applicability]

[0075] The present invention is suitable for a winding device that winds adhesive-coated copper wire around a spool. [Explanation of symbols]

[0076] 11...copper wire, 12...coating film, 14...winding frame, 15...adhesive, 20...applicator, 21...through hole, 22...exit, 23...entrance, 34...rotating shaft, 35...support shaft, 36...bracket, 40...winding device, 41...main shaft motor, 43...cylindrical guide, 45...guide roller, D...outer diameter of copper wire, R1, R2...winding radius.

Claims

1. A winding device that winds a copper wire guided by a cylindrical guide around a winding frame rotated by a main shaft motor, The winding device includes an adhesive applicator between the cylindrical guide and the reel, the adhesive applicator applying adhesive to the copper wire, The applicator has a through hole through which the copper wire passes, the outlet of the through hole having a hole diameter corresponding to the outer diameter of the copper wire, and the inlet of the through hole is not narrowed and has a larger diameter than the outlet, Furthermore, the winding device is characterized in that the applicator is supported so as to be movable when pressed by the copper wire which sways as the winding radius of the reel changes.

2. 2. The winding device according to claim 1, A winding device characterized in that, when a viscosity of 5 to 100 Pa·s is defined as medium viscosity and a viscosity lower than medium viscosity is defined as high viscosity, the adhesive is a thermosetting adhesive that has medium or high viscosity and does not harden at room temperature.

3. 2. The winding device according to claim 1, The winding device is characterized in that the through hole is a tapered hole.

4. 2. The winding device according to claim 1, The winding device further includes a bracket that is disposed a predetermined distance away from the reel and swings around a support shaft that is disposed parallel to the rotation axis of the reel, The winding device is characterized in that the applicator and the cylindrical guide are supported by this bracket.

5. 2. The winding device according to claim 1, The winding device further includes a bracket that is disposed a predetermined distance away from the reel and swings around a support shaft that is disposed parallel to the rotation axis of the reel, The winding device is characterized in that the cylindrical guide is supported by the bracket, and the applicator is supported by the cylindrical guide.

6. 2. The winding device according to claim 1, The winding device further includes a bracket that is disposed a predetermined distance away from the reel and swings around a support shaft that is disposed parallel to the rotation axis of the reel, The winding device is characterized in that the applicator is supported by this bracket.

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