Taping device

Abstract

The invention absorbs the slack of the belt (7) and improves the quality of the belt braided for the braided body (9). The invention comprises: a base (1); guide rings (2a, 2b) mounted on the base (1) and having a roller guide portion (4) configured to be freely rotatable; and a synchronous pulley (3) rotating along the outer periphery of the guide rings (2a, 2b) and having a tensioning mechanism (10) for applying tension to the belt (7) wound around the braided body (9) arranged at the rotation center. The tensioning mechanism (10) and the roller guide portion (4) periodically apply tension to the belt (7).

Description

Technical Field

[0001] The present invention relates to a tape braiding device. Background Art

[0002] Taping devices are known for wrapping busbar conductors for coils of motors, transformers, and the like, or for power distribution lines. For example, in the conventional taping device disclosed in Patent Document 1, the tape is fed out by clamping the tape around a plurality of rollers disposed along the tape path between a tape spool and the tape body to impart tension to the tape wound around the tape body.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 4-311412 Summary of the Invention

[0004] In the above-described tape braiding device, if the braided body is positioned offset from the rotational center of the braiding device, slack may occur in the wound tape. Furthermore, if the cross-sectional shape of the braided body in the tape winding direction is polygonal, the distances from the rotational center of the wound tape to the vertices and corners of the braided body vary, thereby causing slack in the wound tape.

[0005] Therefore, when the tape is wound around the braided body, it may "slip", "wrinkle", "float" or "warp", which may reduce the quality of the tape winding and impair the appearance of the finished product. Figure 9 As shown, the tape of the braided tape body A having a twisted shape is wound, or Figure 10 In the tape winding of the curved tape body B shown in (a) and (b), it is difficult to position the tape winding portion of the tape body at the rotation center of the tape braiding device. This problem becomes particularly significant for tapes such as polyimide films that do not have adhesive properties on the winding surface. Figure 10 (a) shows a front view of the braided body B, and (b) shows a top view.

[0006] The present invention discloses a technique for solving the above-mentioned problems, and its purpose is to provide a braiding device that absorbs the slack of the tape and improves the quality of the tape winding around the braided body. The braiding device disclosed in the present invention winds the tape fed from the tape bobbin around the braided body.

[0007] The taping device has:

[0008] a base; a guide ring mounted on the base and having a roller guide portion configured to be freely rotatable; and a synchronous pulley rotating along the outer circumference of the guide ring and having a tensioning mechanism for applying tension to the belt wound around the braided body disposed at the center of rotation.

[0009] The tension mechanism and the roller guide periodically apply tension to the belt.

[0010] Effects of the Invention

[0011] According to the braiding device disclosed in the present invention, it is possible to absorb the slack of the tape and improve the quality of the tape winding around the object to be braided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view showing the braiding device according to the first embodiment.

[0013] Figure 2 yes Figure 1 Left side view.

[0014] Figure 3 It is a perspective view of the braiding device according to the first embodiment.

[0015] Figure 4 This is a cross-sectional view taken from the bottom side, cut along a horizontal plane with the rotation center of the braiding device according to the first embodiment as a reference.

[0016] Figure 5 This is an enlarged view of the tensioning mechanism of the braiding device according to the first embodiment.

[0017] Figure 6 This is a front view showing the operation of the braiding device according to the first embodiment.

[0018] Figure 7 It is a front view showing the braiding device according to the second embodiment.

[0019] Figure 8 It is a front view showing the braiding device according to the third embodiment.

[0020] Figure 9 It is a diagram showing a braided tape body having a twisted shape.

[0021] Figure 10 It is a figure which shows the tape body to be braided which has a curved shape. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same reference numerals are used to indicate the same or corresponding parts in the drawings. In addition, the following descriptions such as "upper surface", "lower surface" or "upper part" and "lower part" are relative to the front view. Figure 1 、 Figure 7 or Figure 8 The term “upper surface”, “lower surface”, “upper part” or “lower part” refers to the surface of the paper.

[0023] Implementation method 1.

[0024] Figure 1 1 is a front view of the braiding device according to the first embodiment. Figure 2 yes Figure 1 In addition, Figure 3 1 is a perspective view of the braiding device according to the first embodiment. Figure 4 This is a cross-sectional view of the braiding device according to the first embodiment, cut along a horizontal plane with the rotation center of the braided body as a reference and viewed from the bottom.

[0025] exist Figures 1 to 4 In the present invention, the braiding device 100A includes a flat-plate base 1 serving as a substrate, with a hollow, disc-shaped lower guide ring 2a mounted on the upper surface of the base 1. A semicircular cutout 1h is formed in the base 1, and a semicircular cutout 2h is formed in the lower guide ring 2a, giving the lower guide ring 2a a C-shape. A convex step 2s is formed on the upper surface. The lower guide ring 2a is fixed to the base 1 so that the central axis of the lower guide ring 2a is aligned with the central axis of the semicircular cutout 1h formed in the base 1.

[0026] The surface of the timing pulley 3 is formed with a concave step 3s when viewed from the rotation axis. Furthermore, the timing pulley 3 has an inner diameter portion that is identical in shape to the outer shape of the step 2s of the lower guide ring 2a, and a notch 3h is formed therein. The timing pulley 3 is configured to freely rotate about the base 1 and the lower guide ring 2a, with the inner diameter portion being retained by the step 2s of the lower guide ring 2a.

[0027] The hollow, disc-shaped upper guide ring 2b has the same inner diameter and a cutout as the lower guide ring 2a. It engages with the stepped portion 2s of the lower guide ring 2a to secure the ring, preventing the timing pulley 3 from rotating in the direction of the rotation axis. In other words, the lower guide ring 2a and the upper guide ring 2b form a guide ring for the timing pulley 3, rotatably holding the timing pulley 3 while preventing it from rotating in the direction of the rotation axis.

[0028] As described above, the guide rings composed of the lower guide ring 2a and the upper guide ring 2b have cutouts, and the timing pulley 3 has cutouts 3h, making it easy to align the cutout positions of the guide rings and the timing pulley 3.

[0029] The cylindrical roller guides 4 are rotatable and arranged at equal angles on the same circumference, centered around the rotation center of the timing pulley 3. The roller guides 4 are vertically mounted in roller guide mounting holes 5 formed in the upper surface of the upper guide ring 2b. Multiple roller guide mounting holes 5 are provided, and as described later, the mounting position of the roller guides 4 can be changed, allowing the timing and magnitude of tension applied to the belt to be adjusted.

[0030] The belt bobbin 6 is mounted on the upper surface of the timing pulley 3 in a vertical direction by clamping the left and right surfaces of the belt 7 pre-wound on the winding core with respect to the moving direction of the belt. Figure 4 As shown, the bobbin 6 is configured to be pressed by the timing pulley 3 via the spacer 6c by the spring force of the coil 6b attached to the bobbin rotating shaft 6a, thereby securing the rotation in the rotation direction.

[0031] The belt guide 8 is formed in a cylindrical shape and Figure 4 As shown, the belt 7 is fixed to the upper surface of the synchronous pulley 3 and tilted outward to guide the belt 7 wound by the braided body 9 arranged at the center of the rotation axis of the synchronous pulley 3. Figure 1 As shown, the belt 7 is guided and wound around the belt body 9 while being given an angle relative to the belt body 9 along the circumference of the timing pulley 3 by the belt guide 8. The angle of the belt 7 sent out from the belt guide 8 relative to the belt body 9 is given by the rotation of the timing pulley 3.

[0032] Figure 5 An enlarged view of the tensioning mechanism 10 that applies tension to the tape 7 is shown. The tensioning mechanism 10 comprises a tensioning guide 11, which is a cylindrical guide, a tensioning link 12, and a torsion spring 13. The tensioning guide 11 is positioned between the tape spool 6 and the tape guide 8 to transfer the tape 7 fed from the tape reel 6 to the tape guide 8, thereby varying the angle at which the tape 7 is wound around the tape body 9.

[0033] In addition, the tension link 12 is constituted by, for example, a flat plate. Figure 5 As shown, the tension guide 11 is rotatably mounted on the upper surface of the timing pulley 3, as described later. It extends toward a portion of the upper surface of the upper guide ring 2b on the timing pulley 3 side. As the timing pulley 3 rotates, it contacts the roller guide 4 and springs upward. When the tension guide 11 is separated from the roller guide 4, it is forced back to a position where it contacts the stopper 14, described later, due to a force that returns in the direction in which the torsion of the torsion spring 13 disappears. Furthermore, the tension guide 11 is attached perpendicularly to the end of the tension link 12. The direction of the force generated when the torsion spring 13 is twisted is counterclockwise relative to the center of rotation.

[0034] The stopper 14 is mounted vertically on the upper surface of the synchronous pulley 3. One end of the tension link 12 is pushed by the stopper 14 by the spring force of the torsion spring 13 provided at the rotation center of the tension link 12, and the rotation is suppressed. That is, one end of the torsion spring 13 is fixed to the tension link 12, and the other end is fixed to the stopper 14. The tension link 12 is fixed to the torsion spring 13 at the rotation center. Figure 5 The force is applied in a counterclockwise tilted manner, but the contact between the tension link 12 and the stopper 14 is maintained. Figure 5 Position shown.

[0035] The drive motor 15 is provided at the upper center of the base 1 and is mounted such that its output shaft extends from the lower surface to the upper surface of the base 1. A drive pulley 16 is fixed to the output shaft of the drive motor 15 and rotates together with the drive motor 15.

[0036] Two pulleys 17a and 17b are rotatably mounted on the outer periphery of the timing pulley 3. The pulleys 17a and 17b are fixed to the base 1 at positions separated in the width direction of the lower guide ring 2a and upper guide ring 2b, or the stepped portion 3s of the timing pulley 3, with their rotation axes perpendicular to the base 1. The pulley 17a engages with the stepped portion 3s of the timing pulley 3, while the pulley 17b engages with the spool rotating shaft 6a.

[0037] The transmission belt 18 becomes a double-edged synchronous belt, and the teeth on the inner surface engage with the driving pulley 16 and the two sub-pulleys 17a and 17b, and the teeth on the outer surface engage with the step portion 3s of the synchronous pulley 3. The rotation of the driving motor 15 is transmitted from the driving pulley 16 to the synchronous pulley 3 and the belt bobbin 6 via the sub-pulleys 17a and 17b, thereby rotating the synchronous pulley 3 and winding the belt 7 onto the braided body 9.

[0038] The braiding device 100A according to the first embodiment is configured as described above, and its operation will be described below.

[0039] exist Figure 6 In (a) and (b), when the belt 7 is wound around the braided body 9, the timing pulley 3 is rotated by the rotation of the driving motor 15. Figure 6 (a) is in the clockwise direction, i.e. Figure 6 (a) is rotated right, and the tension link 12 contacts the roller guide 4. At this time, according to the rotation angle of the timing pulley 3, the tension link 12 changes clockwise relative to the rotation center and Figure 6 (b) The roller guide 4 jumps up by tilting in the counterclockwise direction as shown by the arrow Y. Then, if the contact between the roller guide 4 and the tension link 12 is released, the roller guide 4 returns to the tension link 12 by the torsion force of the torsion spring 13. Figure 6(b) shows the original position in contact with the stopper 14. Specifically, the tension link 12 changes its angle clockwise due to the rotation of the timing pulley 3, tilts counterclockwise, and jumps up. Then, due to the torsional force of the torsion spring 13, it returns to its original position in contact with the stopper 14.

[0040] As described above, the tape 7 attached to the tape bobbin 6 is periodically given tension and is wound around the tape body 9 via the tension guide 11 and the tape guide 8 .

[0041] Here, as long as the fixed position of the tape body 9 arranged at the center of the rotation axis of the timing pulley 3 remains unchanged, the length of the tape 7 fed from the tape spool 6 to the tape body 9 remains constant. However, the tension link 12 changes its angle clockwise due to the clockwise rotation of the timing pulley 3, causing it to jump up. As a result, the position of the tension guide 11 changes, and the length of the tape 7 fed from the tape spool 6 to the tape body 9 changes.

[0042] However, when the angle of the tensioning link 12 changes clockwise and jumps up due to the rotation of the synchronous pulley 3, the force required for rotating the belt spool 6 is set to be larger than the force of stretching the belt 7, thereby suppressing the change in the belt length from the belt 7 sent out from the belt spool 6 to the braided belt body 9 caused by the change in the position of the tensioning guide part 11 due to the jumping of the tensioning link 12, and generating tension in the belt length direction for the belt 7 wound onto the braided belt body 9.

[0043] As described above, it comprises: a tensioning mechanism 10, which comprises a tensioning guide portion 11 for transferring the belt 7 fed from the belt bobbin 6 to the belt guide portion 8 which is wound around the braided body 9 while giving an angle along the circumference of the synchronous pulley 3, a tensioning link 12 which vertically mounts the tensioning guide portion 11 at the front end, and a torsion spring 13 which is arranged at the rotation center of the tensioning link 12; and a roller guide portion 4 which is fixed to the upper surface of the upper guide ring 2b, thereby generating a movement which pulls the belt 7 upward from the braided body 9 while applying tension, thereby eliminating slack of the belt 7 in the braid, and in addition, the belt 7 will not be wrinkled relative to the braided body 9 and can be wound without a gap with the winding surface.

[0044] In addition, the installation position of the roller guide part 4 is arranged in a position where the roller guide part installation hole 5 arranged on the upper surface of the upper guide ring 2b is consistent with the extension line of the straight line connecting the vertices of the braided body 9 from the center of the rotation axis of the synchronous pulley 3, thereby being able to apply tension to the corners of the braided body 9.

[0045] In addition, the structure is such that a plurality of roller guide mounting holes 5 are formed, and by changing the mounting position of the roller guide 4, the timing of applying tension to the belt 7 and the magnitude of the tension can be changed. Therefore, in the belt winding of the belt body 9 having a polygonal cross-sectional shape, the belt 7 is made to fit to the belt body 9 by matching the mounting position of the roller guide with the cross-sectional shape of the belt body 9, thereby suppressing wrinkles or sagging in the appearance of the finished product.

[0046] In addition, the guide ring is composed of the lower guide ring 2a and the upper guide ring 2b, and a cutout portion is formed on the synchronous pulley 3. Therefore, by aligning the cutout positions of the guide ring and the synchronous pulley 3, the braided body 9 can be arranged at the rotation center of the synchronous pulley 3 without disassembling the braiding device 100A.

[0047] Implementation method 2.

[0048] Next, a braiding device according to a second embodiment will be described.

[0049] When installing the roller guide 4 mounted on the upper surface of the upper guide ring 2 b , the curvature radius from the rotation center of the timing pulley 3 , the angular spacing between the roller guides 4 , and the mounting position of the roller guide 4 can be changed.

[0050] Figure 7 1 is a front view showing a braiding device according to Embodiment 2. The braiding device 100B according to Embodiment 2 is a diagram showing a state where a tape 7 is wound around a braided body 9 having a rhombus-shaped cross section. Figure 7 The roller guide 4 is attached to an extension line connecting the four vertices of the rhombus-shaped braided body 9 from the rotation center of the timing pulley 3. The remaining configuration is the same as that of the braiding device 100A described in the first embodiment, and redundant description is omitted.

[0051] According to the braiding device 100B of the second embodiment, even if the cross-section of the braided body 9 is polygonal, the provision of a plurality of roller guide mounting holes 5 arranged on the upper surface of the upper guide ring 2b allows the braid 7 to be wound around braided bodies of various cross-sectional shapes using the same braiding device. Furthermore, by applying tension to the braided body 9 while the braid 7 is pulled upward, any slack in the braid 7 can be eliminated. Furthermore, the braid 7 can be wound without any gaps between the braided body 9 and the winding surface, without wrinkling.

[0052] Implementation method 3.

[0053] Next, a braiding device according to a third embodiment will be described.

[0054] Figure 8100C according to the third embodiment. In the first or second embodiment, the tensioning mechanism 10 and the belt guide 8 are provided for belt braiding with one belt 7. The belt guide 8 winds the belt 7 around the belt body 9 while giving an angle to the belt 7 wound around the belt body 9. However, Figure 8 As shown, in order to braid a plurality of belts 7 simultaneously, the number of belts 7, tensioning mechanisms 10, and belt guides 8 may be arranged in accordance with the number.

[0055] For example, Figure 8 As shown, two sets of belt bobbins 6 to which belt 7 is fixed, belt guides 8 for winding belt 7 around a braided body 9 while applying an angle to the belt 7, and tensioning mechanisms 10 are respectively arranged symmetrically with respect to the rotation center axis of the timing pulley 3. The remaining configuration is the same as that of the first or second embodiment, and therefore repeated descriptions are omitted.

[0056] According to the braiding device 100C according to the third embodiment, two types of tapes 7 can be braided while being overlapped at the same time, thereby reducing the man-hours required for braiding.

[0057] The present invention describes various exemplary embodiments and examples, but various features, modes, and functions described in one or more embodiments are not limited to application in specific embodiments and can be applied to the embodiments alone or in various combinations.

[0058] Therefore, numerous variations not shown in the examples are contemplated within the technical scope disclosed herein, including, for example, variations, additions, or omissions of at least one structural element, and extraction of at least one structural element and combination with structural elements of other embodiments.

[0059] Description of the label

[0060] 1 base, 1h, 2h, 3h cutouts, 2a lower guide ring, 2b upper guide ring, 2s, 3s stepped portions, 3 synchronous pulley, 4 roller guide, 5 roller guide mounting hole, 6 belt bobbin, 6a bobbin rotation axis, 6b coil, 6c spacer, 7 belt, 8 belt guide, 9 braided body, 10 tensioning mechanism, 11 tensioning guide, 12 tensioning link, 13 torsion spring, 14 stopper, 15 driving motor, 16 driving pulley, 17a, 17b sub-pulleys, 18 transmission belt, 100A, 100B, 100C braiding devices.

Claims

1. A braiding device that winds a tape fed from a tape bobbin onto a braided body. The tape braiding device is characterized by having: base; a guide ring mounted on the base and having a roller guide portion configured to be freely rotatable; and a timing pulley that rotates along the outer circumference of the guide ring and has a tensioning mechanism for applying tension to the belt wound around the braided body disposed at the rotation center; The tension mechanism and the roller guide periodically apply tension to the belt. The tensioning mechanism includes a tensioning guide portion serving as a guide portion for the belt, a tensioning link rotatably provided on the synchronous pulley, and a torsion spring that applies a torsional force between one end of the tensioning link and a stopper, wherein the stopper is vertically mounted on the upper surface of the synchronous pulley. The tension link is configured to jump up by contacting the roller guide portion due to the rotation of the timing pulley and return to a position in contact with the stopper portion by a force in a direction in which the torsion of the torsion spring disappears when the tension link is separated from the roller guide portion.

2. The braiding device according to claim 1, characterized in that By changing the attachment position of the roller guide, the timing of applying tension to the belt and the magnitude of the tension of the belt can be changed.

3. The braiding device according to claim 1 or 2, characterized in that: The guide ring and the timing pulley are provided with cutouts.

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