Tape pull-out machine

Abstract

To provide a tape pull-out machine excellent in tape pull-up performance and simple in mechanism.SOLUTION: A tape pull-up machine is provided with a tape holing part holding a tape end extending from a roll tape to pull-out tape from the roll tape by expanding a space between the roll tape and the tape holding part. The tape holding part is provided with an attached part on which an adhesive face of the tape end attaches, and a holding roller rotating while the adhesive face of the tape end attaches thereon at a position near to a tip side of the tape further than that of the attached part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a tape drawing machine for drawing out a roll tape. [Background technology]

[0002] 2. Description of the Related Art Conventionally, as part of the manufacture of wire harnesses for vehicles, a tape winding machine for winding tape around a bundle of electric wires and an exterior member covering the bundle has been proposed.

[0003] For example, Patent Document 1 describes a tape puller that includes a holder portion that holds the tape end extending from a roll tape and a chuck portion that grips the tape end held by the holder portion, and that pulls out the roll tape by widening the gap between the chuck portion gripping the tape end and the holder portion.

[0004] A tape puller holds the tape end extending from a roll tape and pulls out the tape. Note that "pulling out the tape" means holding the previously unwound adhesive tape and pulling it out.

[0005] The tape generally used for this type of application is a single-sided adhesive tape having an adhesive on one side, with the side opposite the adhesive side of the single-sided adhesive tape being a non-adhesive side, and the adhesive side of the upper layer abutting against the non-adhesive side of the lower layer tape, allowing the adhesive tape to be easily unwound from the previously unwound part. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2019-26439 [Patent Document 2] Patent Publication No. 2021-62948 Summary of the Invention [Problem to be solved by the invention]

[0007] In a tape puller provided in a conventional tape winding machine, a chuck grips and pulls out the end of the cut tape, so that the chuck can grip the tape end in the correct position after the tape is cut. Therefore, a holder must be provided in close proximity to the outer periphery of the roll tape so that the tape end slightly pulled out from the roll tape stands upright. However, as the tape is used and the outer diameter of the roll tape decreases, the gap between the roll tape and the holder increases, and the tape may bend under its own weight, resulting in an inability to hold the tape end in the correct position.

[0008] In order to properly grip and pull out the tape, a tape puller provided in a conventional tape winding machine requires, in addition to the holder, a chuck that clamps and moves the tape end and releases the grip to release the tape end, resulting in a complex mechanism and control. Therefore, conventional tape pullers are only used in large, expensive tape winding devices, and the tape pull-out operation in tape winding operations using tape winding machines is still often performed manually. For example, in tape winding operations using a simple, inexpensive tape winding machine such as that described in Patent Document 2, the tape is manually pulled out from the roll tape, resulting in problems such as worker fatigue and a shortage of workers.

[0009] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a tape drawing machine that has a simple mechanism and excellent performance in drawing out tape from a roll tape. [Means for solving the problem]

[0010] The tape pull-out machine of the present invention is a tape pull-out machine that has a tape holding section that holds the tape end extending from the roll tape, and pulls out the tape from the roll tape by widening the gap between the roll tape and the tape holding section, and is equipped with an adhesive section on the tape holding section to which the adhesive surface of the tape end adheres, and a holding roller that rotates at a position closer to the tip of the tape than the adhesive section while the adhesive surface of the tape end adheres to it.

[0011] The tape puller is provided with a slide plate that moves the tape end held by the tape holding portion to the position of the target object, and a moving plate that moves the slide plate in a direction that widens the gap between the slide plate and the unwound tape. [Effects of the Invention]

[0012] The present invention provides a tape drawer that has excellent tape draw-out performance and can hold and draw out the tape end unwound from a roll tape using a simple mechanism. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a tape winding machine equipped with a tape drawing machine according to the present invention. [Figure 2] Fig. 2(a) is a schematic diagram showing the state before the tape is pulled out, Fig. 2(b) is a schematic diagram showing the operation of pulling out the tape, and Fig. 2(c) is a schematic diagram showing the operation of retracting the tape while attaching the end of the tape to an object. [Figure 3] Figure 3(a) is a schematic diagram showing the operation before cutting the tape, Figure 3(b) is a schematic diagram showing the state before cutting the tape, and Figure 3(c) is a schematic diagram showing the operation of cutting the tape. [Figure 4] FIG. 4 is a perspective view showing a tape dispenser according to the present invention. [Figure 5] Fig. 5(a) is a schematic diagram of the tape holding part as viewed from the direction of the central axis of the roll tape before the tape is pulled out, and Fig. 5(b) is a schematic diagram of the tape holding part as viewed from the direction of the central axis of the roll tape during the tape pulling operation. [Figure 6] FIG. 6 is a schematic view of the tape drawer according to the present invention, seen from the non-adhesive side in the thickness direction of the drawn-out tape. DETAILED DESCRIPTION OF THE INVENTION

[0014] A tape dispenser and a tape winding machine according to an embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, "front," "rear," "left," "right," "upper," and "lower" are defined as shown in Figures 1 and 4. The front-to-rear direction, left-to-right direction, and upper-to-lower direction are perpendicular to each other.

[0015] As shown in FIG. 1 , the tape winding machine includes a rotating plate 5, which is positioned in a plane perpendicular to the object 1 and has a hollow central rotation area, and a fixed plate 6, which is positioned adjacent to the rotating plate 5 and also has a hollow central rotation area, as pivoting means for rotating and moving the roll tape 2 in a plane perpendicular to the object 1. The rotating plate 5 is driven to rotate by a motor. The rotating plate 5 and the fixed plate 6 are provided with notches from their outer peripheries to allow the object 1 to be inserted and removed from the hollow central rotation area. When the notches in the rotating plate 5 and the fixed plate 6 are aligned, the object 1 can be easily inserted and removed through the notches. A holder 3 is provided at the tip of a roll tape support 4 fixed to the rotating plate 5 and holds the roll tape 2.

[0016] 4, the tape drawing machine is equipped with a slide plate 13 that moves the tape holding portion 7 in the front-to-rear direction (slide plate moving direction 16), and the slide plate 13 can be selectively controlled to a front operating position (position where the tape is applied to the object 1) or a rear operating position (position where the tape is cut and the tape end is held). The tape drawing machine also has a movable plate 14 that moves in the up-down direction (moving plate moving direction 18), and the movable plate 14 can be selectively controlled to an upper operating position (position where the tape is drawn out) or a lower operating position (retracted position).

[0017] The tape holding part 7 is connected to the slide plate 13, and has an adhesive part 8 and a holding roller 9 at its upper end. The adhesive part 8 and the holding roller 9 are provided so that the adhesive surface of the tape pulled out from the roll tape 2 adheres to them, and the holding roller 9 is provided close to the adhesive part 8 on the tape end side of the adhesive part 8.

[0018] The adhesive portion 8 is disposed at the upper tip of the tape holding portion 7 provided on the slide plate 13. The adhesive portion 8 is provided at a position that comes into contact with the adhesive surface of the tape pulled out from the roll tape 2 when the moving plate 14 moves upward. The adhesive surface of the adhesive portion 8 is formed smoothly so that the adhesive surface of the tape will adhere to the adhesive portion 8 properly without wrinkles.

[0019] The holding roller 9 is positioned on the tape holding portion 7 of the slide plate 13, close to the adhesive portion 8, and closer to the tape end than the adhesive portion 8. The holding roller 9 is provided to rotate easily on a central axis parallel to the central axis of the roll tape 2, and its peripheral surface is formed smoothly so that the tape adheres to the roller. The width of the holding roller 9 is greater than the width of the tape, so that the adhesive surface of the tape adheres without wrinkles. Furthermore, the holding roller 9 is provided slightly below the adhesive portion 8 so that when the tape is pulled out with the adhesive surface of the tape adhered to the adhesive portion 8 of the tape holding portion 7 and the holding roller 9, the adhesive portion 8 presses against the adhesive surface of the tape stretched from the roll tape 2 to the holding roller 9, as shown in Figure 5(b).

[0020] The slide plate 13 is provided so as to be movable in the front-to-rear direction (the direction in which the tape is pulled out) by the driving force of an air cylinder or the like (not shown). The slide plate 13 is provided below (on the adhesive side of) the tape unwound from the roll tape 2. When the tape is pulled out, the slide plate 13 moves forward to a predetermined position where the tape end held by the tape holding portion 7 fixed to the slide plate 13 can be attached to the object. After the tape end has been attached to the object 1, the slide plate 13 moves downward by the movable plate 14, and then moves backward (towards the roll tape 2) by the driving force to the position before the tape was pulled out. The slide plate 13 is provided so as to be connected to the movable plate 14, and moves back and forth on the movable plate 14, which moves up and down.

[0021] The movable plate 14 is provided so as to be movable in the vertical direction by the driving force of an air cylinder or the like (not shown). When the tape end is pulled out, it moves upward (to a position where the adhesive portion 8 of the tape holding portion 7 comes into contact with the adhesive surface of the tape), and when the tape is wound, it moves downward to a position where the tape puller does not come into contact with the roll tape 2 rotated by the tape winding machine (to a position where it does not interfere with the operation of the tape winding machine).

[0022] Presser unit 10 is rotatably provided at the tip of movable plate 14 in the forward direction (toward object 1), and is provided with resin sheet piece 12 at its tip. When slide plate 13 moves and the tape is pulled out to a position above object 1 where the tape end can be attached to object 1, presser unit 10 is pressed by slide plate 13 and rotates, so that the tape end is interposed between resin sheet piece 12 provided on presser unit 10 and object 1. When presser unit 10 is not pressed by slide plate 13, it is urged by elastic body 11 fixed to movable plate 14, and when movable plate 14 moves up and down, presser unit 10 rotates and retreats to a position where presser unit 10 and resin sheet piece 12 do not come into contact with object 1.

[0023] 5(a) and 5(b), the method by which the tape holding unit 7 holds the tape will be described. Before the tape is pulled out (after the tape is cut), as shown in FIG. 5(a), the adhesive surface of the tape is attached to the adhesive portion 8 and the holding roller 9, but no tension is applied to the tape, and the tip of the tape in front of the holding roller 9 hangs down. When the slide plate 13 moves and tension is applied to the tape, as shown in FIG. 5(b), the roller adhesive portion 21 is pulled toward the roll tape 2, causing it to rotate in the holding roller rotation direction 19. At this time, the end of the tape that was hanging down in front of the tape holding unit 7 moves upward. At this stage, the tape holding unit 7 has no force to hold the tape, and the tape is not pulled out from the roll tape 2.

[0024] Thereafter, as the gap between the roll tape 2 and the tape holding portion 7 widens further and tension is applied to the tape, the tape is pulled toward the roll tape 2, and as it continues to rotate in the holding roller rotation direction 19, the roll tape 2 side of the tape that has adhered to the holding roller 9 peels off from the holding roller 9. However, at the same time, the leading edge of the tape that has adhered to the holding roller 9 is pulled from the leading edge by the rotation of the holding roller 9 and adheres to the holding roller 9. As a result, the tape does not completely peel off from the holding roller 9, and the adhesive surface of the tape remains adhered to the holding roller 9 even as the tape moves. At this time, the tape peels off against the adhesive force of the adhesive surface of the tape to the holding roller 9, and tension is generated in the tape between the adhesive portion 8 and the holding roller 9. When tension is generated in this tape, if the adhesive portion 8 is pressed against the adhesive surface of the tape and moved in the direction of pulling out the tape together with the holding roller 9, the adhesive surface of the tape is pressed against the adhesive portion 8, and the tape is held by the holding roller 9 without peeling off, maintaining an angle (adhesive surface angle 20), so that the adhesive force of the tape to the adhesive portion 8 increases, and the tape can be pulled out from the roll tape 2 against the adhesive force of the adhesive surface of the tape to the non-adhesive surface on the back side of the roll tape.

[0025] Reducing the angle (adhesive surface angle 20) between the tape stretched from the roll tape 2 to the adhesive portion 8 and the tape stretched from the adhesive portion 8 to the holding roller 9 strengthens the tape-holding force. This is because the adhesive portion 8 presses the adhesive surface of the tape more firmly. In this mechanism, when the tape is pulled out, tension is generated in the tape, and the tape on the tape holding portion 7 moves slightly toward the roll tape 2 until it is held by the adhesive portion 8. This shortens the length of the tape extending from the tape holding portion 7 to the tape tip, but the tape is then held fixed. If the tape tip ahead of the tape holding portion 7 continues to move toward the tape holding portion 7, the tape holding portion 7 is not strong enough to hold the tape end. In this case, it is necessary to either reduce the adhesive surface angle 20 as described above, or increase the adhesive portion 8 to increase the adhesive area and strengthen the holding force.

[0026] The above-described tape holding mechanism obtains sufficient holding force to pull the tape from the roll tape 2 when the adhesive surface of the unwound tape is stuck to both the adhesive portion 8 and the holding roller 9. If an attempt is made to unwound the tape from the roll tape 2 with the adhesive surface stuck only to the adhesive portion 8, the tension of the tape will cause the tape to easily peel off from the adhesive portion 8 and not be held. Furthermore, if an attempt is made to unwound the tape from the roll tape 2 with the adhesive surface stuck only to the holding roller 9, the holding roller 9 will continue to rotate in the holding roller rotation direction 19, causing the tape to move with the adhesive surface stuck to the holding roller 9 and not be held. When the tape is stuck to both the adhesive portion 8 and the holding roller 9 and tension is applied to the tape, a pressing force is generated to prevent the adhesive surface of the tape from peeling off from the adhesive portion 8, and the tape holding unit 7 can obtain sufficient holding force to pull the tape from the roll tape 2. When the tape pulling operation stops and no tension is being applied to the tape, the tape can be easily peeled off from the adhesive portion 8 and the holding roller 9. When the tape puller withdraws while adhering the end of the tape to the object 1, the adhesive surface of the tape end is pressed against the object 1 and adheres firmly, and the tape is then peeled off from the adhesive portion 8 and the holding roller 9, and the adhesive surface of the tape is easily peeled off from the adhesive portion 8 and the holding roller 9, leaving the tape stretched from the roll tape 2 to the object 1. [Example]

[0027] First, as shown in Figures 1 and 2(a), an operator holds the rotating plate 5 by hand or by a device and places the object 1 (such as a bundle of electric wires) on the central axis of the rotating plate 5. At this time, the rotating plate 5 is stopped at a position where the notches in the rotating plate 5 and the fixed plate 6 are aligned, as shown in Figure 1. When the notches in the rotating plate 5 and the fixed plate 6 are aligned, the object 1 is inserted or removed from the outer periphery of the fixed plate 6 onto the central axis of rotation of the rotating plate 5. At this time, the resin sheet piece 12 provided on the pressing portion 10, which is biased by the elastic body 11 fixed to the moving plate 14, is retracted to a position where it does not interfere with the insertion or removal of the object.

[0028] When the object 1 is inserted or removed from the central axis of rotation of the rotary plate, the tape end pulled out from the roll tape 2 is held with the adhesive surface adhering to both the holding roller 9 of the tape holding part and the adhesive part 8. The cut end of the tape is located in front of the tape holding part 7 (towards the object 1), but is positioned so that it does not interfere with the insertion or removal of the object.

[0029] Next, as shown in Figure 2(b), the adhesive surface of the tape unwound from the roll tape 2 adheres to the holding roller 9 and the adhesive portion 8 provided at the tip of the tape holding portion 7, thereby holding the tape, and the slide plate 13 moves in the direction of pulling the tape toward the object 1, thereby pulling the tape from the roll tape 2. The tape tip is held in a state where it projects from the tape holding portion 7 toward the object 1 by the distance necessary for the adhesive surface of the tape tip to adhere to the object 1, and when the slide plate 13 moves, the tape tip is held above the object 1 with the adhesive surface facing the object 1. At this time, the pressing portion 10 is pressed by the tip of the slide plate 13 and rotates, and the tape tip is now interposed between the object 1 and the resin sheet piece 12 provided at the tip of the pressing portion 10.

[0030] The tape holding portion 7 that holds the tape end as the tape is unwound from the roll tape 2 will now be described. Figure 5(b) shows the tape holding portion 7 as the tape is unwound from the roll tape 2. The adhesive surface of the tape end unwound from the roll tape 2 adheres to the adhesive portion 8 and the holding roller 9 provided at the upper tip of the tape holding portion 7. When the slide plate 13 moves and tension is applied to the tape, the holding roller 9 rotates in the holding roller rotation direction 19, tensioning the tape and pressing the adhesive surface of the tape against the adhesive portion 8. In other words, the adhesive portion 8 presses against the adhesive surface of the tape stretched between the roll tape 2 and the holding roller 8. Furthermore, as the holding roller 9 rotates in the holding roller rotation direction 19 at this time, the leading edge of the tape moves slightly toward the roll tape 2, while the rotation of the holding roller 9 moves the tape end upward. When the end of the tape is hanging down, it is difficult to attach the end of the tape to the object 1, but as the holding roller 9 rotates, the end of the tape moves upward, making it easier to attach the adhesive surface of the end of the tape to the object 1.

[0031] Next, as shown in FIG. 2(c), the movable plate 14 moves downward (in the direction in which the tape holding unit 7 moves away from the adhesive surface of the tape), and the end of the tape is adhered to the object 1. At this time, the resin sheet piece 12 provided at the tip of the pressing unit 10 presses the end of the tape against the object 1, causing the adhesive surface of the end of the tape to adhere to the circumferential surface of the object 1, and the tape is peeled off from the adhesive portion 8 and the holding roller 9, which are retracted downward. After that, the movable plate 14 moves downward, and retracts the tape puller to a position where it does not come into contact with the roll tape 2 rotated by the tape winding machine. After completing the downward retraction operation, the tape winding machine operates and wraps the tape around the object 1.

[0032] After the tape is wound by the tape winding machine, as shown in Figure 3(a), the slide plate 13 moves downward (to a position where the adhesive surface of the tape is not in contact with the non-adhesive surface 8 of the tape holding part 7) to a predetermined rear position. At this time, the pressure applied by the slide plate 13 to the pressing part 10 is released, and the pressing part 10 is rotated by the elastic body 11 in a direction away from the tape holding part 7, and the moving plate 14 moves upward in a state where the resin sheet piece 12 is retracted to a position where it does not interfere with the insertion and removal of the target object 1. Figure 3(b) shows the state in which the moving plate 14 has moved upward to a predetermined position where the non-adhesive surface 8 of the tape holding part 7 is in contact with the adhesive surface of the stretched tape.

[0033] As shown in Figure 3(c), the tape stretched from roll tape 2 to object 1 is cut by cutting blade 15 pressing down on the non-adhesive surface on the back of the tape. At this time, the end of the tape on the cut roll tape 2 side sticks to the adhesive portion 8 of tape holding part 7 and holding roller 9. In this state, the object 1 wrapped around the tape is removed.

[0034] As described above, the tape is held in place by the adhesive surface of the tape unwound from the roll tape 2 adhering to the adhesive portion 8 and holding roller 9 provided on the tape holding portion 7, and the slide plate 13 connected to the tape holding portion 7 moves in the direction of pulling out the tape toward the object 1, allowing the tape to be pulled out conveniently from the roll tape 2 with this simple mechanism.

[0035] The present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. Furthermore, the material, shape, dimensions, and location of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention. For example, the size and shape of the adhesive portion 8.

[0036] Furthermore, the tape winding machine is not limited to a mechanism in which the roll tape is rotated by a rotating body, but may be a type in which the object rotates and the tape is wound around the periphery of the object. In that case, the downward movement of the moving plate 14 is sufficient to be to a position where the adhesive surface of the tape stretched from the roll tape 2 to the object 1 peels off from the tape holding part 7. [Explanation of symbols]

[0037] 1. Object 2 rolls of tape 3 Holder part 4 Roll tape support section 5 Rotating Plate 6 Fixing plate 7 Tape holding part 8 Adhesive area 9 Retaining roller 10. Pressing section 11 Elastic body 12 Resin sheet piece 13 Slide plate 14 Moving Plate 15 Cutting blade 16 Slide plate movement direction 17 Rotation direction of the clamp 18 Moving plate movement direction 19 Retaining roller rotation direction 20 Adhesive surface angle 21 Roller adhesive section

Claims

1. A tape drawing machine includes a tape holding part that holds a tape end extending from a roll tape, and draws out the tape from the roll tape by widening the gap between the roll tape and the tape holding part, The tape holding portion, an adhesive portion to which the adhesive surface of the tape end adheres; a holding roller that rotates while the adhesive surface of the tape end is attached at a position closer to the tape tip than the adhesive portion; A tape drawing machine comprising:

2. a slide plate that moves the tape end held by the tape holding portion to the position of an object; a moving plate that moves the slide plate in a direction that widens the gap between the slide plate and the tape that has been fed out; The tape dispenser according to claim 1 , comprising:

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