Tape winding drum and tape unwinding device

Abstract

According to an embodiment of the present invention, a tape winding drum is provided. The tape winding drum according to the embodiment of the present invention may include a bobbin including a cylindrical core portion, a pair of flange portions formed in a disk shape having a diameter larger than that of the core portion and respectively coupled to both ends of the core portion, a tape wound around the core portion to form a coil portion, a starting end of the tape being exposed to the outside of the coil portion and in close contact with the inside of the flange portion, and a tape fixing portion fixing at least one of the starting end or the end of the tape to an inner surface of the flange portion.

Description

[Technical field]

[0001] The present invention relates to a tape winding drum and a tape feeding device, and more particularly to a tape winding drum and a tape feeding device capable of feeding a tape while preventing the tape from becoming entangled and stretched. [Background technology]

[0002] In general, tape products such as adhesive tapes, zipper tapes, etc. are manufactured by extrusion molding, and the final product has a linear shape. For the convenience of manufacturing, transporting, storing, and handling by users, such tape products are wound in the form of a coil on a winding drum such as a bobbin or skein, and are unwound from the winding drum as needed.

[0003] Meanwhile, in order to increase the working efficiency, a plurality of winding drums are usually provided in parallel on one rotating shaft, and one end of the tape is connected to the other end of the tape wound on the adjacent winding drum so that the tape is continuously unwound. Since one end of the tape is connected to the other end of the adjacent tape, when the tape is almost unwound and becomes loose, the weight of the connected part of the tape stretches the tape downward and causes the tape to be entangled with the unwound tape or the tape being unwound. In addition, although the tape should be unwound while maintaining a constant tension, this does not allow for a problem of reduced marketability of the tape. For example, if the force pulling the tape product is large compared to the speed at which the winding drum rotates and unwounds the tape product, the tape product may stretch or break, and conversely, if the force pulling the tape product is small compared to the speed at which the tape product is unwound and the tension acting on the tape product is weak, the tape product may be twisted or entangled.

[0004] Therefore, a need arose for a winding drum that could prevent tangling of the tape product, and a payout device that could payout the tape product while maintaining a constant tension. Summary of the Invention [Problem to be solved by the invention]

[0005] The technical problem to be solved by the present invention is to provide a tape take-up drum that can unwind the tape while preventing the tape from becoming tangled or stretched.

[0006] Another technical problem to be solved by the present invention is to provide a tape feeding device capable of feeding the tape while preventing the tape from becoming entangled and stretched.

[0007] The technical problems of the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0008] To achieve the above technical objectives, a tape winding drum according to an embodiment of the present invention includes a bobbin including a cylindrical core portion, a pair of flange portions formed in a disk shape having a diameter larger than that of the core portion and respectively coupled to both ends of the core portion, a tape wound around the core portion to form a coil portion, the tape having a starting end, which is the end portion that begins to be wound around the core portion, exposed to the outside of the coil portion and in close contact with the inside of the flange portion, and a tape fixing portion that fixes at least one of the starting end or the end end of the tape to an inner surface of the flange portion.

[0009] The tape fixing portion may have an adhesive surface formed on one surface thereof, and may adhere and fix the tape to the flange portion.

[0010] The tape fixing portion may have a non-adhesive surface formed on a surface overlapping the tape, and both sides of the non-adhesive surface may be fixed to the flange portion.

[0011] The tape take-up drum may further include at least one tear line formed on the non-adhesive surface along the length of the tape.

[0012] The tape take-up drum may further include a notch portion formed on at least one of both ends of the tear line.

[0013] The starting end of the tape may extend outwardly along an inner surface of the flange portion, the tape fixing portion may be attached to the inner surface of the flange portion such that the cut line is inclined in a diametrical direction of the flange portion, the cut line may be formed adjacent to the adhesive surface farther away from the core portion, and the notch portion may be formed at an end portion of the cut line closer to the core portion.

[0014] The tear line may be formed at the boundary between the adhesive surface and the non-adhesive surface in a portion of the tape that is farther away from the core portion.

[0015] The non-adhesive surface may be formed to have a width greater than the width of the tape.

[0016] The tape take-up drum may further include a shaft insertion groove penetrating a center of the core portion, and a key groove formed along a longitudinal direction on an inner peripheral surface of the shaft insertion groove.

[0017] In order to achieve another technical objective, a tape unwinding device according to an embodiment of the present invention includes a rotating shaft that penetrates a plurality of tape winding drums and rotates the tape winding drums to unwind the tape, a frame having a support part to which the rotating shaft is rotatably fixed, a driving motor provided in the frame to provide a driving force to the rotating shaft, and a sensing module that senses tension of the tape and controls the driving motor to unwind and supply the tape.

[0018] The tape payout device may further include a sensitivity adjustment wire that is disposed across the tape in front of the tape being paid out, has a weight suspended from at least one of both ends, is supported by the frame, and extends downward, and the sensing module may detect the tension of the sensitivity adjustment wire from the movement of the weight to control the drive motor.

[0019] The sensitivity adjustment wire may have one end fixed to the frame and the weight connected to the other end, or weights having different weights may be hung from both ends.

[0020] The sensing module may stop the driving motor when the weight is pushed, and may rotate the driving motor when the sensitivity adjustment wire pulls the weight and the weight is removed.

[0021] The sensing module may include a non-contact sensor that detects a position of the weight and may rotate the driving motor when the weight rises from a reference position.

[0022] The beginning end of the tape wound on the tape winding drum may be joined to the end end of the tape wound on an adjacent tape winding drum. Effect of the Invention

[0023] According to the present invention, since the tape fixing part fixes at least one of the leading end or the trailing end of the tape to the flange part, even if the tape is almost completely unwound and becomes loose, the tape does not stretch downward, so that it is possible to prevent entanglement with the unwound tape or the tape being unwound. In particular, when the tape is pulled and placed diagonally, the cut line breaks and the tape separates from the flange part, so that the tape can be unwound continuously.

[0024] According to an embodiment of the present invention, when the weight is raised by the force of the tape pulling the sensitivity adjustment wire, the sensing module pressed by the weight can control the driving motor to adjust the rotation of the rotating shaft. Therefore, the tape wound on the winding drum can be unwound by a constant length while maintaining a constant tension, thereby effectively preventing the tape from stretching, breaking, twisting, or tangling. In particular, the tension of the tape is sensed using a wire with a small mass and small inertia and resistance, so that the sensitivity can be sensitively adjusted.

[0025] In addition, since the sensitivity adjustment wire is disposed to extend downward when the sensing module does not drive the driving motor, the tape can be positioned in the center without being biased to one side of the sensitivity adjustment wire. Also, since the point where the tape pulls the sensitivity adjustment wire when the sensing module drives the driving motor is positioned higher than the support point of the second fixing part, the tape does not stretch and the sensitivity can be adjusted precisely.

[0026] According to another embodiment of the present invention, when the second weight is raised by the force of the tape pulling the sensitivity adjustment wire, a sensing module that detects the second weight in a non-contact manner can control the driving motor to adjust the rotation of the rotating shaft. Therefore, the tape wound on the winding drum can be unwound by a constant length while maintaining a constant tension, thereby effectively preventing the tape from stretching, breaking, twisting, or tangling.

[0027] In addition, when the second weight is raised above the first weight by the force of the tape pulling the sensitivity adjustment wire, the first weight is also raised, so that the tape can be prevented from being stretched. [Brief description of the drawings]

[0028] [Figure 1] FIG. 2 is a perspective view of a tape take-up drum according to an embodiment of the present invention. [Diagram 2] FIG. 4 is an enlarged view of a tape fixing portion. [Diagram 3] 10A to 10C are operational views for explaining the operation of the tape fixing portion. [Figure 4] 2 is a perspective view showing a state in which the tape winding drum is attached to the tape feeding device. FIG. [Diagram 5] 2 is a perspective view showing a state in which the tape winding drum is separated from the tape unwinding device. FIG. [Figure 6] FIG. 13 is a diagram showing a state in which a sensitivity adjustment wire is attached to a frame. [Figure 7] 5A to 5C are operational diagrams for explaining the operation of the tape feeding device. [Figure 8] 5A to 5C are operational diagrams for explaining the operation of the tape feeding device. [Figure 9] FIG. 11 is a perspective view showing a state in which a take-up drum is attached to a tape feeding device according to another embodiment of the present invention. [Figure 10] FIG. 13 is a diagram showing a state in which a sensitivity adjustment wire is attached to a frame. [Figure 11] 5A to 5C are operational diagrams for explaining the operation of the tape feeding device. [Figure 12] 5A to 5C are operational diagrams for explaining the operation of the tape feeding device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The advantages and features of the present invention, as well as the methods of achieving them, will become clear from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and can be realized in various different forms. The present embodiments are provided merely to complete the disclosure of the present invention and to fully inform those skilled in the art of the present invention of the scope of the invention, and the present invention is defined only by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

[0030] A tape winding drum and a tape payout device according to an embodiment of the present invention will be described in detail below with reference to FIGS.

[0031] The tape winding drum according to the embodiment of the present invention has a tape wound thereon. Here, the tape is not limited to tape products such as adhesive tape and zipper tape, but generally refers to all linear products such as wires and films.

[0032] In the tape take-up drum, the tape fixing part fixes at least one of the leading end or trailing end of the tape to the flange part, so that even if the tape is almost unwound and becomes loose, the tape does not stretch downward, so that it is possible to prevent entanglement with the unwound tape or the tape being unwound. In particular, when the tape is pulled and placed diagonally, the cutting line breaks and the tape detaches from the flange part, so that the tape can be unwound continuously.

[0033] A tape unwinding device according to an embodiment of the present invention is a device that automatically unwinds a tape that has been wound around a tape winding drum.

[0034] In the tape unwinding device, when the weight is raised by the force of the tape pulling the sensitivity adjustment wire, the sensing module pressed by the weight can control the driving motor to adjust the rotation of the rotary shaft. Therefore, the tape wound on the winding drum can be unwound by a certain length while maintaining a certain tension, and thus the stretching, breakage, twisting, and entanglement of the tape can be effectively prevented. In particular, the tension of the tape is sensed using a wire with a small mass and small inertia and resistance, so that the sensitivity can be adjusted sensitively. In addition, since the sensitivity adjustment wire is arranged to extend downward when the sensing module does not drive the driving motor, the tape can be positioned in the center without being biased to one side of the sensitivity adjustment wire. In addition, since the point where the tape pulls the sensitivity adjustment wire when the sensing module drives the driving motor is located higher than the support point of the second fixing part, the tape does not stretch, and the sensitivity can be adjusted more sensitively.

[0035] The tape take-up drum 2 will now be described in detail with reference to FIGS.

[0036] FIG. 1 is a perspective view showing a tape winding drum according to an embodiment of the present invention, FIG. 2 is an enlarged view showing a tape fixing portion, and FIG. 3 is an operation diagram for explaining the operation of the tape fixing portion.

[0037] The tape take-up drum 2 according to the present invention includes a bobbin 100 , a tape 200 , and a tape fixing portion 300 .

[0038] The bobbin 100 is the main body of the tape winding drum 2 and includes a core portion 110 and a pair of flange portions 120. The core portion 110 is a portion around which the tape 200 is wound, and is formed of a cylindrical member, with flange portions 120 attached to both ends. The flange portions 120 are portions that prevent the tape 200 wound around the core portion 110 from coming off, and are formed of a disk-shaped member having a larger diameter than the core portion 110, and are attached so that their centers coincide with the centers of the core portion 110. A shaft insertion groove (not shown) into which a rotating shaft (see 10 in FIG. 5) described later is inserted is formed through the center of the core portion 110, and the shaft insertion groove may be formed by indenting a key groove (not shown) along the longitudinal direction of the inner peripheral surface. The rotating shaft 10 has a key (see 10a in Figure 5) formed along the longitudinal direction on its outer peripheral surface. When the key 10a is inserted into the key groove, the bonding force between the bobbin 100 and the rotating shaft 10 increases, preventing the bobbin 100 from slipping and allowing it to easily rotate together with the rotating shaft 10.

[0039] The tape 200 is a linear member and is wound around the outer circumferential surface of the core portion 110 to form a coil portion. At this time, a starting end 200a of the tape 200, which is an end portion at which the tape 200 starts to be wound around the core portion 110, may be exposed to the outside of the coil portion and adhere to the inside of the flange portion 120, and a terminal end portion opposite the starting end 200a may also be exposed to the outside of the coil portion and adhere to the inside of the flange portion 120. The starting end 200a of the tape 200 may extend to the outside of the flange portion 120 along the inner surface of the flange portion 120 and be connected to a terminal end of the tape 200 wound around the tape winding drum 2 adjacent to one side, and the terminal end of the tape 200 may be connected to the starting end 200a of the tape 200 wound around the tape winding drum 2 adjacent to the other side. At least one of the starting end 200a or the terminal end of the tape 200 may be fixed to the flange portion 120 by a tape fixing portion 300.

[0040] The tape fixing part 300 fixes at least one of the start end 200a or the end end of the tape 200 to the inner surface of the flange part 120, and an adhesive surface 300a is formed on one surface to adhere and fix the tape 200 to the flange part 120. Since the tape fixing part 300 fixes at least one of the start end 200a or the end end of the tape 200 to the inner surface of the flange part 120, even if the tape 200 is almost unwound and loosened, the tape 200 does not stretch downward, so that entanglement with the unwound tape 200 or the unwound tape can be prevented. In the past, the tape 200 was not fixed to the flange part 120, so when the tape 200 was almost unwound and loosened, the tape 200 stretched downward due to the weight of the connecting part of the tape 200, and there was a problem of entanglement with the unwound tape 200 or the unwound tape 200. In the present invention, the tape fixing part 300 fixes the tape 200 to the flange part 120, so that even if most of the tape is unwound and becomes loose, the tape 200 does not stretch downward, thereby preventing the tape 200 from becoming entangled and improving work efficiency and merchantability.

[0041] 2, the tape fixing part 300 has a non-adhesive surface 300b formed on a surface overlapping the tape 200, and adhesive surfaces 300a are formed on both sides of the non-adhesive surface 300b, so that both sides of the non-adhesive surface 300b can be fixed to the flange part 120. Since the width of the non-adhesive surface 300b is larger than the width of the tape 200, the tape 200 can move left and right on the non-adhesive surface 300b as shown in FIG. 2(b), and thus, even when the tape fixing part 300 fixes the leading end 200a or the trailing end of the tape 200 to the flange part 120 as shown in FIG. 3(a), the tape 200 can be easily unwound. At least one cut line 310 is formed on the non-adhesive surface 300b along the longitudinal direction of the tape 200, and at least one of both ends of the cut line 310 can have a notch 320 formed thereon to facilitate breaking of the cut line 310. 3(b), when the tape 200 that has been unwound from the core portion 110 is pulled and arranged diagonally and inserted into the notch portion 320, the tear line 310 breaks and the tape 200 is released from the flange portion 120, so that the tape 200 can be unwound continuously. More specifically, as shown in FIGS. 1 and 2(a), the tape fixing portion 300 is attached to the inner surface of the flange portion 120 such that the tear line 310 is inclined with respect to the diameter direction of the flange portion 120 (see the R direction in FIG. 2), and the tear line 310 is formed adjacent to the adhesive surface 300a that is farther away from the core portion 110, and the notch portion 320 can be formed at the end of the tear line 310 that is closer to the core portion 110. The cut line 310 may be formed on both sides of the non-adhesive surface 300b, but since pressure is applied to the non-adhesive surface 300b of the tape fixing part 300 due to inertia when the tape 200 is pulled, and the cut line 310 may easily break, it is preferable that the cut line 310 is formed on the interface between the adhesive surface 300a and the non-adhesive surface 300b in a portion that is farther away from the core part 110 (see d1 in FIG. 2) around the tape 200. In the drawings, the cut line 310 is attached at an angle α from the diameter direction of the flange part 120, but this is not limited thereto, and the angle α can be changed as necessary.Furthermore, the notch portion 320 is not limited to being formed at the end of the cut line 310 closer to the core portion 110, but may be formed at both ends of the cut line 310 as necessary.

[0042] The tape feeding device 1 will be specifically described below with reference to FIGS.

[0043] FIG. 4 is an oblique view showing the tape take-up drum attached to the tape payout device, FIG. 5 is an oblique view showing the tape take-up drum separated from the tape payout device, and FIG. 6 is a diagram showing the sensitivity adjustment wire attached to the frame.

[0044] The tape unwinding device 1 according to the present invention includes a rotating shaft 10, a frame 20, a driving motor 30, and a sensing module 40, and unwinds and supplies a tape 200.

[0045] The rotating shaft 10 is a rod or rod-shaped member having a certain length, and can penetrate through the multiple tape winding drums 2 to rotate the tape winding drums 2 and unwind the tape 200. As described above, a key groove is formed in the shaft insertion groove formed in the center of the core part 110 of the tape winding drum 2, and a key 10a is formed in the rotating shaft 10, so that the tape winding drum 2 does not slip and can easily rotate together with the rotating shaft 10. The multiple tape winding drums 2 can be fitted and fixed in order on the rotating shaft 10, and the starting end of the tape 200 wound on the tape winding drum 2 can be connected to the ending end of the tape 200 wound on the adjacent tape winding drum 2. Therefore, when the rotating shaft 10 rotates, the tape winding drum 2 rotates together with the tape winding drum 2, and the tape 200 wound on the tape winding drum 2 can be unwound in order and continuously supplied. The tape 200 wound around the tape take-up drum 2 is unwound from its tail end, and when the tear line 310 of the tape fixing part 300 is broken, the starting end can be detached from the flange part 120 and unwound. One end of the rotating shaft 10 is connected in the form of a free end to a support part 21 formed on a frame 20, which will be described later, and a detachment prevention cap 11 that prevents the tape take-up drum 2 from being detached is detachably connected to the other end.

[0046] The frame 20 forms the outer shape of the tape dispensing device 1, and may include a support portion 21 to which the rotating shaft 10 is rotatably fixed, a support plate 21a that fixes the support portion 21, as well as an auxiliary support portion 22, a first fixing portion 23, and a second fixing portion 24.

[0047] The support part 21 is disposed perpendicular to the rotary shaft 10 and rotatably fixes one end of the rotary shaft 10, and the lower end is fixed upright to the support plate 21a. In the drawing, the support part 21 is formed in a rectangular tube shape and fixed to the rotary shaft 10 at its side, but the shape of the support part 21 and the connection structure of the rotary shaft 10 can be variously modified. The support plate 21a is a plate-like member for fixing the support part 21, and can be formed to be wider than the width of the support part 21 so that the support part 21 can be stably fixed by improving the contact force with the ground. In addition, a plurality of moving wheels (no reference number in the drawing) for facilitating the movement of the tape delivery device 1 is connected to the lower part of the support plate 21a, and a storage box (no reference number in the drawing) for storing the tape winding drum 2 can be mounted on the upper part as necessary. The other end of the rotary shaft 10 is supported by the auxiliary support part 22.

[0048] The auxiliary support part 22 is arranged next to the support part 21 with the rotating shaft 10 therebetween to rotatably support the other end of the rotating shaft 10, and is fixed to the support plate 21a at a distance from the support part 21 by the length of the rotating shaft 10. The auxiliary support part 22 includes a first auxiliary support part 22a, a second auxiliary support part 22b, a first fixing screw 22c, and a second fixing screw 22d. The first auxiliary support part 22a is a cylindrical or plate-shaped member arranged next to the support part 21, and its lower end is fixed upright to the support plate 21a. Although the first auxiliary support part 22a is shown to be formed of a pair of plate members spaced apart from each other in the drawings, the present invention is not limited thereto, and for example, the first auxiliary support part 22a may be formed of a cylindrical member with an open upper end. The second auxiliary support part 22b is a plate-shaped member and is rotatably connected to the first auxiliary support part 22a to selectively contact the rotating shaft 10. That is, the second auxiliary support part 22b has an end interposed between the first auxiliary support part 22a and is hinged. Therefore, when the tape take-up drum 2 is fitted to or separated from the rotary shaft 10, the second auxiliary support part 22b is rotated downward to be spaced apart from the rotary shaft 10, and when the tape take-up drum 2 is fixed to the rotary shaft 10, the second auxiliary support part 22b is rotated upward to be in contact with the rotary shaft 10. When the tape take-up drum 2 is fixed to the rotary shaft 10, the second auxiliary support part 22b is rotated upward after the aforementioned separation prevention cap 11 is fitted. The second auxiliary support part 22b is rotated from the first auxiliary support part 22a by an operator and can be fixed in a certain position by the second fixing screw 22d. The second fixing screw 22d fixes the second auxiliary support part 22b to the first auxiliary support part 22a, with a threaded portion penetrating the first auxiliary support part 22a and screwing into the second auxiliary support part 22b, and a head portion exposed to the outside of the first auxiliary support part 22a for manipulation by an operator. The second auxiliary support part 22b is fixed to the rotating shaft 10 by the first fixing screw 22c. The first fixing screw 22c fixes the second auxiliary support part 22b to the rotating shaft 10, with a threaded portion penetrating the second auxiliary support part 22b and the detachment prevention cap 11 and screwing into the rotating shaft 10, and a head portion exposed to the outside of the second auxiliary support part 22b for manipulation by an operator.With the second auxiliary support part 22b fixed in a fixed position by the second fixing screw 22d, the first fixing screw 22c fixes the second auxiliary support part 22b and the rotating shaft 10, thereby preventing the rotating shaft 10 from wobbling and allowing the tape 200 to be easily unwound. If necessary, at least one washer may be interposed between the second auxiliary support part 22b and the first fixing screw 22c to increase the tightening force of the first fixing screw 22c.

[0049] A driving motor 30 is provided on the frame 20. The driving motor 30 provides a driving force to the rotating shaft 10, and is provided in the inner space of the support part 21 or outside the support part 21 and is connected to the rotating shaft 10. That is, when the driving motor 30 generates a driving force to rotate the rotating shaft 10, the tape take-up drum 2 fixed to the rotating shaft 10 rotates integrally with the rotating shaft 10, and as the tape take-up drum 2 rotates, the tape 200 wound on the tape take-up drum 2 is unwound. The driving motor 30 can be controlled by a sensing module 40 (described later) to adjust its rotational force, and as the rotational force of the driving motor 30 is adjusted, the tape 200 can be unwound while maintaining a constant tension.

[0050] The sensing module 40 detects the tension of the tape 200 to control the driving motor 30, and detects the tension of the tape 200 through a sensitivity adjustment wire 50. The operation of the sensing module 40 will be described in more detail later.

[0051] The sensitivity adjustment wire 50 prevents the tape 200 from stretching, twisting, or tangling by balancing the speed at which the tape 200 is unwound and the force pulling the tape 200, and is not limited to a wire but is generally referred to as a long, thin, linear product that maintains a constant tension, such as a fishing line or a rope. The sensitivity adjustment wire 50 is installed across the top of the tape 200 in front of the tape 200 being unwound, has a weight 51 suspended from at least one of both ends, and is supported by the frame 20 and extends downward. Hereinafter, a structure in which one end of the sensitivity adjustment wire 50 is fixed to the frame 20 and the weight 51 is connected to the other end will be described in detail.

[0052] The sensitivity adjustment wire 50 has one end fixed to one side of the frame 20, and the other end from which a weight 51 is suspended is supported by the other side of the frame 20 and extends downward. The frame 20 includes a first fixing part 23 to which one end of the sensitivity adjustment wire 50 is fixed, and a second fixing part 24 that is spaced apart from the first fixing part 23 and supports the other end of the sensitivity adjustment wire 50 and the weight 51, and the first fixing part 23 and the second fixing part 24 are disposed in front of the support part 21 and the auxiliary support part 22, respectively, and may be fixed upright to the support plate 21a. In this case, a fixed point of the first fixing part 23 to which the sensitivity adjustment wire 50 is fixed is located lower than a support point of the second fixing part 24 to which the sensitivity adjustment wire 50 is supported, and a fixed pulley 25 is provided on the second fixing part 24 to prevent the sensitivity adjustment wire 50 from bending excessively and to switch the moving direction. However, the present invention is not limited to the case where the weight 51 is provided at one end of the sensitivity adjustment wire 50. For example, weights 51 of different weights may be provided at the first fixing part 23 and the second fixing part 24, respectively, and both ends of the sensitivity adjustment wire 50 may be connected to each weight 51. By connecting different weights 51 to both ends of the sensitivity adjustment wire 50, the sensitivity of the wire can be adjusted more precisely and the sensitivity adjustment wire 50 can act as a buffer when the tape 200 is suddenly pulled. That is, the sensitivity adjustment wire 50 may be provided such that the weight 51 is suspended from at least one of both ends and is supported by the frame 20 and extends downward.

[0053] A guide rod 26 including a guide roller 27 and guiding the tape 200 is disposed in front of the sensitivity adjustment wire 50. The guide rod 26 is located above the sensitivity adjustment wire 50, and both ends are respectively connected to the first fixing part 23 and the second fixing part 24. The guide rod 26 is formed to have the same length as the rotation shaft 10, and its axial direction is parallel to the rotation shaft 10. In addition, an auxiliary guide rod 28 including a guide ring 29 through which the tape 200 passes is disposed between the guide rod 26 and the sensitivity adjustment wire 50, and guiding the tape 200 to the guide roller 27. The auxiliary guide rod 28 is located below the guide rod 26 and above the sensitivity adjustment wire 50, and both ends are respectively connected to the first fixing part 23 and the second fixing part 24, and may be disposed parallel to the guide rod 26. That is, the tape 200 unwound from the tape take-up drum 2 comes into contact with the sensitivity adjustment wire 50, then changes direction upward toward the guide ring 29, passes through the guide ring 29, and comes into contact with the guide roller 27 to be guided forward. Therefore, when the tape 200 is pulled in the front, the sensitivity adjustment wire 50 is raised upward by the tape 200, and the weight 51 is also raised, and when the tape 200 is not pulled, the sensitivity adjustment wire 50 and the weight 51 can return to their original positions. Although the drawing shows a case where the first fixing part 23 is arranged in front of the support part 21 and the second fixing part 24 is arranged in front of the auxiliary support part 22, the present invention is not limited to this, and for example, the second fixing part 24 may be arranged in front of the support part 21 and the first fixing support part 21 may be arranged in front of the auxiliary support part 22. In addition, the guide rod 26 and the auxiliary guide rod 28 are not limited to being formed with the same length as the rotating shaft 10, and the guide rod 26 and the auxiliary guide rod 28 may be formed to be shorter than the rotating shaft 10 as necessary. In addition, the present invention is not limited to being formed with the auxiliary guide rod 28 between the guide rod 26 and the sensitivity adjustment wire 50, and the auxiliary guide rod 28 may be omitted as necessary. When the auxiliary guide rod 28 is omitted, a guide ring 29 may be formed on the guide rod 26 or the guide roller 27 .

[0054] When the sensitivity adjustment wire 50 is pulled upward, the sensing module 40 detects this. The sensing module 40 detects the tension of the sensitivity adjustment wire 50 from the movement of the weight 51 to control the driving motor 30, and is formed as a limit switch including a contact portion protruding upward toward the weight 51. Therefore, when the tape 200 does not pull the sensitivity adjustment wire 50 and the weight 51 presses the contact portion of the sensing module 40, i.e., when the load of the weight 51 is detected by the sensing module 40, the sensing module 40 stops the driving motor 30, and when the sensitivity adjustment wire 50 pulled by the tape 200 pulls the weight 51 and the weight applied to the contact portion of the sensing module 40 is removed, i.e., when the load of the weight 51 is not detected by the sensing module 40, the sensing module 40 can rotate the driving motor 30. The sensing module 40 detects the tension of the sensitivity adjustment wire 50, more specifically, the movement of the weight 51, and controls the drive motor 30 so that when the tape 200 is pulled forward once, the tape 200 is unwound a certain length while maintaining a certain tension, and after the certain length has been unwound, unwinding stops unless the tape 200 is pulled again.

[0055] When the tape 200 is pulled again after being unwound by a certain length, the tape 200 is unwound by a certain length again while maintaining a certain tension. By unwounding by a certain length while maintaining a certain tension, the tape 200 can be prevented from being stretched due to an excessive force pulling the tape 200 compared to the speed at which the tape 200 is unwound, and the tape 200 can be prevented from being twisted or entangled due to a weak force pulling the tape 200 compared to the speed at which the tape 200 is unwound. If necessary, the sensing module 40 can vary the rotation speed of the driving motor 30 in response to the degree to which the contact portion is pressed by the weight 51. For example, when the contact portion is pressed by the weight 51 by a first weight, the sensing module 40 can adjust the rotation speed of the driving motor 30 to be slow, and when the contact portion is pressed by the weight 51 by a second weight that is lighter than the first weight, the sensing module 40 can adjust the rotation speed of the driving motor 30 to be slightly faster. In the drawings, the sensing module 40 is provided below the weight 51 with the contact portion protruding upward, but the present invention is not limited thereto, and for example, the sensing module 40 may be provided above the weight 51 with the contact portion protruding downward. When the sensing module 40 is provided above the weight 51, if the weight 51 is placed in its original position and does not press the contact portion of the sensing module 40, the driving motor 30 stops, and if the sensitivity adjustment wire 50 pulls the weight 51 and presses the contact portion of the sensing module 40, the driving motor 30 rotates.

[0056] The sensing module 40 may include a non-contact sensor that recognizes the position of the weight 51. The non-contact sensor may be of various types, such as a magnetic sensor that detects metal, an optical sensor, etc. The sensing module 40 may rotate the driving motor 30 when the weight rises from a reference position (e.g., a stop position).

[0057] In addition, the sensitivity adjustment wire 50 is provided to extend downward when the sensing module 40 does not drive the driving motor 30, and the point where the tape 200 pulls the sensitivity adjustment wire 50 when the sensing module 40 drives the driving motor 30 may be located higher than the supporting point of the second fixing part 24. As described above, the fixing point of the first fixing part 23 is provided at a lower position than the supporting point of the second fixing part 24, and the sensitivity adjustment wire 50 is provided to extend downward when the sensing module 40 does not drive the driving motor 30, so that the tape 200 can be positioned at the center of the sensitivity adjustment wire 50 to prevent the tape 200 from being biased toward the other end of the sensitivity adjustment wire 50 to which the weight 51 is connected. In addition, the point where the tape 200 pulls the sensitivity adjustment wire 50 when the sensing module 40 drives the driving motor 30 is located higher than the supporting point of the second fixing part 24, so that the tape 200 does not stretch and the sensitivity can be adjusted sensitively.

[0058] Hereinafter, the operation of the tape feeding device 1 will be described in more detail with reference to FIGS.

[0059] 7 and 8 are operational diagrams for explaining the operation of the tape feeding device.

[0060] In the tape payout device 1 according to the present invention, when the weight 51 is raised by the force of the tape 200 pulling the sensitivity adjustment wire 50, the sensing module 40 pressed by the weight 51 can control the driving motor 30 to adjust the rotation of the rotating shaft 10. Therefore, the tape 200 wound on the tape winding drum 2 can be paid out by a certain length while maintaining a certain tension, and thus the stretching, breakage, twisting, and entanglement of the tape 200 can be effectively prevented. In particular, the tension of the tape 200 is sensed using a wire with a small mass and small inertia and resistance, so that the sensitivity can be sensitively adjusted. In addition, since the sensitivity adjustment wire 50 is arranged to extend downward when the sensing module 40 does not drive the driving motor 30, the tape 200 can be positioned in the center without being biased to one side of the sensitivity adjustment wire 50. In addition, since the point where the tape 200 pulls the sensitivity adjustment wire 50 when the sensing module 40 drives the driving motor 30 is located higher than the support point of the second fixed part 24, the tape 200 does not stretch and the sensitivity can be adjusted more sensitively.

[0061] FIG. 7 shows the state in which the tape is set for unwinding.

[0062] As shown in Fig. 7(a), the end of the tape 200 wound around the tape take-up drum 2 is unwound from the tape take-up drum 2, passes under the sensitivity adjustment wire 50, crosses the sensitivity adjustment wire 50, and changes direction by inclining upward toward the auxiliary guide rod 28 disposed behind the sensitivity adjustment wire 50. As shown in Fig. 7(b), the sensitivity adjustment wire 50 has one end fixed to the first fixing part 23, and the other end from which the weight 51 is suspended is supported by the second fixing part 24 by the fixed pulley 25, and extends downward to cross the tape 200. At this time, the fixing point of the first fixing part 23 to which one end of the sensitivity adjustment wire 50 is fixed may be located lower than the supporting point of the second fixing part 24 to which the other end of the sensitivity adjustment wire 50 is supported. A sensing module 40 is provided under the weight 51, and the sensing module 40 stops the driving motor 30 when the weight 51 presses a contact part.

[0063] On the other hand, the end of the tape 200 that has been redirected upward passes through the guide ring 29 and is then set so as to come into contact with the guide roller 27 provided on the guide rod 26 .

[0064] FIG. 8 is a diagram showing the state when the tape is being unwound.

[0065] After the tape 200 is set by the above-mentioned series of steps, the end of the tape 200 is pulled forward as shown in FIG. 8(a). When the tape 200 is pulled, the sensitivity adjustment wire 50 is raised upward by the tape 200, and the weight 51 rises as shown in FIG. 8(b). At this time, the point where the tape 200 pulls the sensitivity adjustment wire 50 can be located higher than the supporting point of the second fixing part 24. Since the other side of the sensitivity adjustment wire 50 is supported by the fixed pulley 25, the sensitivity adjustment wire 50 is prevented from bending excessively and the weight 51 can easily rise. When the weight 51 is pulled by the sensitivity adjustment wire 50 and the weight pressing the contact part is removed, the sensing module 40 rotates the driving motor 30. As the driving motor 30 rotates, the rotating shaft 10 and the tape winding drum 2 fixed to the rotating shaft 10 rotate, and the tape 200 can be unwound by a certain length while maintaining a certain tension. After the tape 200 has been unwound by a certain length, the tape 200 is pulled again and the tape 200 can be unwound by the above-mentioned series of steps.

[0066] When the tape 200 wound around the tape winding drum 2 is pulled in a state where the tape 200 is almost unwound, the tear line 310 of the tape fixing part 300 breaks and the starting end of the tape 200 separates from the flange part 120. As the starting end of the tape 200 separates from the flange part 120, the tail end of the tape 200 wound around the adjacent tape winding drum 2 connected to the starting end can be unwound.

[0067] Hereinafter, a tape feeding device 1-1 according to another embodiment of the present invention will be described in detail with reference to FIGS.

[0068] FIG. 9 is a perspective view showing a state in which a take-up drum is attached to a tape feeding device according to another embodiment of the present invention, and FIG. 10 is a view showing a state in which a sensitivity adjustment wire is provided on a frame.

[0069] In the tape unwinding device 1-1 according to another embodiment of the present invention, a first weight 51a and a second weight 51b having different weights are connected to both ends of a sensitivity adjustment wire 50, the first weight 51a and the second weight 51b rise and fall along the first fixing part 23 and the second fixing part 24, respectively, and a sensing module 40 is provided adjacent to the second weight 51b. The tape unwinding device 1-1 according to another embodiment of the present invention is substantially the same as the above-mentioned embodiment, except that a first weight 51a and a second weight 51b having different weights are connected to both ends of a sensitivity adjustment wire 50, the first weight 51a and the second weight 51b rise and fall along the first fixing part 23 and the second fixing part 24, respectively, and a sensing module 40 is provided adjacent to the second weight 51b. Therefore, this will be mainly described, and the description of other components will be replaced with the above-mentioned content unless otherwise specified.

[0070] The frame 20 includes a first fixing portion 23 and a second fixing portion 24 which respectively support both ends of the sensitivity adjustment wire 50, and the first fixing portion 23 and the second fixing portion 24 are spaced apart from each other and arranged next to each other on the support plate 21a.

[0071] The sensitivity adjustment wire 50 is connected at one end to a first weight 51a that moves up and down along the first fixing part 23 and is seated on a first stopper 52a, and at the other end to a second weight 51b that moves up and down along the second fixing part 24 and is seated on a second stopper 52b. In this case, the sensing module 40 is installed close to the second weight 51b and is formed of a sensor that recognizes the position of the second weight 51b in a non-contact manner, such as a magnetic Hall sensor, and can rotate the driving motor 30 when the second weight 51b moves up from a reference position. The first weight 51a and the second weight 51b are formed to have different masses and are respectively coupled to the first fixing part 23 and the second fixing part 24 so as to be able to slide, and the heights of the reference positions when the sensitivity adjustment wire 50 is stopped without tension are different from each other. For example, the first weight 51a has a larger mass than the second weight 51b, and the reference position can be set higher. Since the second weight 51b has a smaller mass than the first weight 51a and its reference position is set lower, the sensing module 40, which detects the second weight 51b in a non-contact manner, can sensitively react to control the driving motor 30, and thus the tape 200 wound around the winding drum 2 can be unwound by a constant length while maintaining a constant tension, effectively preventing damage to the tape 200. In addition, when the second weight 51b is raised above the first weight 51a by the force of the tape 200 pulling the sensitivity adjustment wire 50, the first weight 51a, which is positioned higher than the second weight 51b, can be easily raised, effectively preventing stretching of the tape 200.

[0072] Hereinafter, the operation of the tape feeding device 1-1 will be described in more detail with reference to FIGS.

[0073] 11 and 12 are operational diagrams for explaining the operation of the tape feeding device.

[0074] In the tape payout device 1-1 according to the present invention, when the second weight 51b is raised by the force of the tape 200 pulling the sensitivity adjustment wire 50, the sensing module 40 that detects the second weight 51b in a non-contact manner controls the driving motor 30 to adjust the rotation of the rotating shaft 10. Therefore, the tape 200 wound on the winding drum 2 can be paid out by a constant length while maintaining a constant tension, thereby effectively preventing the stretching, breakage, twisting, and entanglement of the tape 200. In addition, when the second weight 51b is raised above the first weight 51a by the force of the tape 200 pulling the sensitivity adjustment wire 50, the first weight 51a is also raised, so that the stretching of the tape 200 can be prevented.

[0075] As shown in FIG. 9, the tape 200 wound around the winding drum 2 is unwound from the winding drum 2, passes under the sensitivity adjustment wire 50, intersects with the sensitivity adjustment wire 50, and then changes direction upward to pass between the auxiliary guide rod 28 and the guide ring 29.

[0076] When the tape 200 set by the above-mentioned series of steps is pulled forward, the sensitivity adjustment wire 50 is raised upward by the tape 200, and the second weight 51b seated on the second stopper 52b is raised upward along the second fixing part 24 as shown in Fig. 11. At this time, the first weight 51a is maintained in a state seated on the first stopper 52a. When the second weight 51b is raised upward, the sensing module 40 rotates the driving motor 30, which rotates the rotating shaft 10 and the winding drum 2, and the tape 200 is unwound while maintaining a constant tension.

[0077] If the tape 200 is pulled excessively and the sensitivity adjustment wire 50 is raised even higher, the second weight 51b is raised higher than the first weight 51a, as shown in Fig. 12. In this case, the first weight 51a, which was seated on the first stopper 52a, is raised along the first fixing portion 23, so that the tape 200 can be prevented from stretching and the sensitivity adjustment wire 50 can be prevented from breaking.

[0078] Although the embodiment of the present invention has been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical idea or essential features of the present invention. Therefore, it should be understood that the above embodiment is illustrative in all respects and is not limiting. [Industrial Applicability]

[0079] INDUSTRIAL APPLICABILITY The present invention has a high industrial applicability because it can unwind a tape wound around a drum while preventing tangling and stretching of the tape. [Explanation of symbols]

[0080] 1,1-1 Tape unwinding device 2 Tape take-up drum 10 Rotation axis 10a Key 11 Anti-detachment cap 20 Frames 21 Support part 21a Support plate 22 Auxiliary support part 22a 1st auxiliary support part 22b Second auxiliary support part 22c First fixing screw 22d Second fixing screw 23 1st fixed part 24 Second fixed part 25 fixed pulley 26 Guide rod 27 Guide roller 28 Auxiliary guide rod 29 Guide Ring 30 Drive motor 40 Sensing Module 50 Sensitivity adjustment wire 51 Weight weight 51a 1st weight 51b 2nd weight 52a First stopper 52b Second stopper 100 bobbins 110 Core 120 Flange part 200 Tape 300 Tape fixing part 300a Adhesive surface 300b non-adhesive surface 310 Cutting line 320 Notch

Claims

1. a bobbin including a cylindrical core portion and a pair of disk-shaped flange portions each having a larger diameter than the core portion and coupled to both ends of the core portion; a tape wound around the core portion to form a coil portion, the start end of which is exposed to the outside of the coil portion and is in close contact with the inside of the flange portion; and A tape take-up drum including a tape fixing portion that fixes at least one of the starting end or the end end of the tape to an inner surface of the flange portion.

2. The tape take-up drum according to claim 1 , wherein the tape fixing portion has an adhesive surface formed on one surface thereof for adhesively fixing the tape to the flange portion.

3. The tape take-up drum according to claim 2 , wherein the tape fixing portion has a non-adhesive surface formed on a surface overlapping the tape, and both sides of the non-adhesive surface are fixed to the flange portion.

4. The tape take-up drum of claim 3 , further comprising at least one tear line formed on the non-adhesive surface along the length of the tape.

5. The tape take-up drum of claim 4 , further comprising a notch formed in at least one of both ends of the tear line.

6. The tape has a starting end that extends along an inner surface of the flange portion to an outside of the flange portion, 6. The tape winding drum of claim 5, wherein the tape fixing portion is attached to an inner surface of the flange portion such that the cut line is inclined with respect to a diameter direction of the flange portion, the cut line is formed adjacent to the adhesive surface farther away from the core portion, and the notch portion is formed at an end portion of the cut line closer to the core portion.

7. The tape take-up drum according to claim 6 , wherein the tear line is formed at a boundary between the adhesive surface and the non-adhesive surface in a portion of the tape that is farther away from the core portion around the center of the tape.

8. The tape take-up drum according to claim 3 , wherein the non-adhesive surface is formed to have a width greater than a width of the tape.

9. The tape take-up drum according to claim 2 , further comprising: a shaft insertion groove penetrating a center of the core portion; and a key groove formed along a longitudinal direction on an inner peripheral surface of the shaft insertion groove.

10. A rotating shaft that passes through the plurality of tape winding drums according to any one of claims 1 to 9 and rotates the tape winding drums to unwind the tape; a frame having a support portion to which the rotation shaft is rotatably fixed; A drive motor provided on the frame to provide a driving force to the rotation shaft; and a tape unwinding device including a sensing module for sensing tension of the tape and controlling the drive motor to unwind and supply the tape;

11. a sensitivity adjustment wire that is disposed across the tape in front of the tape being unwound, has a weight suspended from at least one of both ends, and is supported by the frame and extends downward; The tape dispenser according to claim 10, wherein the sensing module detects tension of the sensitivity adjustment wire from the movement of the weight and controls the drive motor.

12. The tape dispenser according to claim 11, wherein one end of the sensitivity adjustment wire is fixed to the frame and the weight is connected to the other end, or weights having different weights are hung from both ends.

13. The sensing module includes:

12. The tape dispenser according to claim 11, wherein the drive motor is stopped when the weight is pushed, and the sensitivity adjustment wire pulls the weight to rotate the drive motor when the weight is removed.

14. The sensing module includes:

12. The tape dispenser according to claim 11, further comprising a non-contact sensor that recognizes the position of the weight, and rotates the drive motor when the weight rises from a reference position.

15. The tape dispenser according to claim 10 , wherein the start end of the tape wound around the tape winding drum is connected to a tail end of the tape wound around an adjacent tape winding drum.

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