JPH0140187Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a taping device for wrapping an adhesive tape for protection or insulation on the surface of a coil such as an electromagnet, a chiyoke coil, or a transformer.

[Technical background of the invention and its problems]

Conventionally, as shown in, for example, Japanese Utility Model Publication No. 57-4421, there is a device that automatically wraps adhesive tape around the surface of a coil. This conventional device wraps a single-sided adhesive tape pulled out from a tape roll rotatably supported by a tape roll shaft onto the surface of a coil of a coil bobbin that is rotated at a fixed position. Furthermore, a cutter for cutting the tape is movably faced near the coil bobbin, and a rubbing member is provided on the back of the cutting edge of the cutter, and the cut end of the tape on the coil side is pressed against the winding surface by the rubbing member. I try to rub it. However, the rubbing member used in this conventional device is a small protrusion that rubs against the cut end of the tape on the coil side, passes through the cut end, and then returns in the direction opposite to the cut end. However, since this cut end was rubbed from the opposite side, there was a risk that the rubbing member would scrape off the cut end of the tape on the coil side.

[Purpose of invention]

The present invention improves the shape of the member that rubs the cut end of the tape on the coil side to eliminate the risk of the rubbing member scraping off the cut end during the return movement, and further improves the shape of the member that rubs the cut end of the tape on the coil side. The purpose is to obtain the optimal stiffness for rubbing by using a special material.

[Summary of the idea]

The taping device of the present invention is a taping device that wraps a single-sided adhesive tape pulled out from a tape roll rotatably supported by a tape roll shaft onto the surface of a coil of a coil bobbin that is rotated at a fixed position. A cutter for tape cutting is movably faced near the coil bobbin, and a rubbing sheet made of ultra-high molecular weight polyethylene is attached to the back of the cutting edge of the cutter by folding it into a curved shape. The tip of the attachment sheet is sufficiently protruded to the opposite side of the cutting edge of the cutter to form a free end. After cutting, the cut end of the tape on the coil side is continuously rubbed against the wrapping surface using a rubbing sheet-like member.

[Example of idea]

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

As shown in FIGS. 1 and 2, a mechanism for rotating the head plate 3 is provided between the mounting board 2 that stands perpendicularly to the lower base 1 and the head plate 3 located in front of the mounting board 2. . That is, a vertical movement adjustment guide 4 is fixed to the mounting board 2, a vertical movement adjustment part 6 is fixed to this guide 4 with two screws 5, and the tip of a horizontal plate 7 provided integrally with this adjustment part 6 is fixed. The head plate 3 is rotatably mounted via a head support shaft 8, and a disk 10 is fixed to a rotation shaft 9 projecting forward from the mounting board 2. shaft 11 and head plate 3
The shaft 12 at the right end of the link 13 whose length is adjustable
Connect by. This link 13 is connected to the cylindrical member 1
3a is telescopically fitted to the shaft member 13b and fixed with thumbscrews 14. This butterfly screw 14 and the screw 5 are loosened when vertically adjusting the position of the cutting edge of the cutter (described later). In addition, the rotation axis 9
is an electric motor 15 fixed to the rear surface of the mounting board 2.
It rotates by.

Further, a tape roll support plate 16 is fixed to the upper part of the head plate 3, and a tape roll shaft 17 is integrally provided protruding from the upper end of the support plate 16 toward the front. A tape roll 19 fitted on a receiving ring 18 is rotatably supported. Further, an arm 21 is rotatably fixed to the lower part of the support plate 16 with a screw 20,
A tape width position adjusting shaft 22 is integrally provided protruding from the tip of this arm 21 toward the front, and a compression spring 23 and a spacer 24 are fitted to this shaft 22, and a holder 25a of a rotating plate 25 is rotatably provided. After fitting, a double nut 26 is screwed together, and this nut 26 supports the pressing force of the spring 23 and adjusts the position of the rotary plate 25 in the tape width direction. This rotating plate 25 is pulled upward by a coil spring 27 suspended from the tape roll shaft 17. Further, a pressing shaft 28 is provided protruding from the tip of the rotary plate 25 toward the front, and a pair of one-side flanged rollers 29 is rotatably fitted onto this pressing shaft 28, and a compression spring 30 and a spacer 31 are also fitted. Then, the double nut 32 is further screwed together to lock the spacer 31. Then, the inner roller 29 is pressed against the outer peripheral surface of the tape roll 19 by the tensile force of the spring 27, and based on the pressing force of the spring 30, the one side flange portion 33 of the pair of rollers 29 pushes the tape roll. Pinch both sides of 19 to position it. The rotation of the arm 21 is adjusted according to the diameter of the tape roll 19 by loosening the screw 20. The one-side flanged roller 29 is formed of Rulon (registered trademark of Dixon Co., USA, which will be explained in detail later) or Teflon (registered trademark of Dupont Co., USA).

Further, a mechanism is provided on the front right side of the head plate 3 for guiding the adhesive tape 34 with adhesive on one side that has been rewound from the tape roll 19. That is, four support shafts 35 are provided protruding from the head plate 3, a V-shaped bearing 36 is rotatably provided on each support shaft 35, and a guide portion slider 37 is horizontally movable between the upper and lower V-shaped bearings 36. to fit. The slider 37 has the front and rear corners of the upper and lower surfaces thereof chamfered so that the chamfered surfaces 38 are brought into close contact with the inclined groove surfaces 39 of the V-shaped bearing 36. Further, the tip of a spring 41 fixed to the center of the head plate 3 with a screw 40 is engaged with the receiving part 42 at the left end of the guide slider 37, so that the slider 3
7 to the right, fix a vertical support plate 44 to the center of this slider 37 with a screw 43, and attach a bracket 4 to the upper end of this vertical support plate 44.
5 is fixed, and a guide roller mounting plate 47 is rotatably mounted on this bracket 45 by a shaft 46, and the downward rotation of this mounting plate 47 is slightly prevented by a stopper 48 provided on the vertical support plate 44. Lock in the tilted position upward to the left. This guide roller mounting plate 47 has three guide roller shafts 49 and one O-ring shaft 50 protruding from the front, and each guide roller shaft 49 has a plurality of guide rollers 51 of the same diameter.
are rotatably fitted to each other to form an E-shaped ring member 5.
2, and a resilient O-ring 53 used for sealing is fitted onto the O-ring shaft 50. Further, a forward stopper 55 and a backward stopper 56 are screwed onto the left and right sides of the U-shaped mounting plate 54 fixed to the front surface of the head plate 3 to determine the position of the tip of the tape after tape cutting.
By means of these stoppers 55 and 56, the vertical support plate 44
The lower part of the vertical support plate 44 is guided by the concave groove 58 of the L-shaped guide plate 57 fixed to the head plate 3.

The guide roller 51 is molded from polytetrafluoroethylene containing specially selected fillers (Rulon, a registered trademark of Dickson Co., Ltd. in the United States).
(by volume)% of polytetrafluoroethylene; a silicate selected from the group consisting of glass, talc, mica and aluminum silicate; and a silicate selected from the group consisting of aluminum, molybdenum, silver, copper, lead, lead oxide and copper oxide. A bearing for relatively moving surfaces, characterized in that the silicate is present in an amount equal to or twice the amount of the third component by volume. etc. (described in Japanese Patent Publication No. 40-24728),
It is known to have excellent wear resistance and heat resistance, as well as a low coefficient of friction. Moreover, this lulon has a moderate adhesion property, and the adhesive tape 34 can be lightly adhered to this lulon. On the other hand, when using pure polytetrafluoroethylene (Teflon, a registered trademark of DuPont, USA), the adhesive strength of the tape 34 is too weak, and when using metal, the adhesive strength of the tape 34 is too strong.

Further, a bearing part 59 is fixed to the upper part of the mounting board 2, a winding shaft 60 rotatably fitted to the bearing part 59 is projected in front of the head plate 3, and the tip end surface of the winding shaft 60 is made to protrude in front of the head plate 3. The bobbin shaft 61 is fitted into the axial insertion hole drilled in and fixed with screws,
A coil bobbin 64 having a coil 63 wound thereon is fitted onto the square shaft portion 62 of the bobbin shaft 61. The winding shaft 60 is rotated by an electric motor 66 fixed to the rear surface of the mounting board 2 via a spacer 65.

Further, a mechanism is provided on the front left side of the head plate 3 for attaching the tip of the tape 34 to the outer peripheral surface of the coil 63 wound around the coil bobbin 64. That is, four support shafts 67 are provided protruding from the head plate 3, a V-shaped bearing 68 is rotatably provided on each support shaft 67, and an attachment slide 69 is vertically movable between the left and right V-shaped bearings 68. to fit. The slider 69 has the front and rear corners of the left and right side surfaces chamfered to bring the cut surfaces 70 into close contact with the inclined groove surfaces 71 of the V-shaped bearing 68. Furthermore, an L-shaped plate 72 is fixed to the upper end of this pasting part slider 69, and an elastic pressing part 7 made of neoprene sponge rubber is attached to the upper surface of this L-shaped plate 72 via a base rubber 73.
Glue 4. Further, a roller 76 is rotatably attached to a shaft 75 protruding from the bottom of the slider 69, and a main body of a rotary solenoid 77 is fixed to the back surface of the head plate 3, and the rotary solenoid 77 has a rotation shaft. 78 protrudes from the front surface of the head plate 3, a vertical movement plate 79 is fixed to the tip of this rotation shaft 78, and the concave groove 80 of this movement plate 79 and the roller 76 are slidably fitted. .
The rotation shaft 78 of the rotary solenoid 77 is energized clockwise by a mainspring spring (not shown) fitted in the head plate 3, and when the solenoid is not energized, the rotary solenoid 77 is energized through the operating plate 79 to the attachment portion. The roller 76 of the slider 69 is pushed down.

A cutter mount 81 made of an L-shaped plate is obliquely fixed to the upper left side of the head plate 3, and the cutter mount 81 is attached to the winding shaft 6 from the front side.
0. Two guide grooves 82 parallel to the bobbin shaft 61 etc. are cut into the guide groove 82, and two screws 84 screwed into the cursor plate 83 as a cutter fixing plate are inserted into the guide groove 82 from the groove end opening. Then, by tightening this screw 84 at the appropriate insertion position, the cutter mounting base 81
The cursor board 83 is fixed to. As shown in FIG. 3, on this cursor plate 83, a cutter 85 for tape cutting and a labeler fixing plate 86 are integrally attached with screws 87. The lower part of a labeler 89 serving as a rubbing sheet is clamped and fixed by the upper part of the fixing plate 86, and the lower part of this labeler 89 is attached to the back of the cutting edge 88, and the upper part of this labeler 89 is curved. Fold it back and insert the upper tip into the cutting edge 88 of the cutter 85.
Let it protrude sufficiently to the opposite side to form a free end. This labeler 89 is a long and thin sheet-like material molded from ultra-high molecular weight polyethylene (registered trademark: Solidil) manufactured by Benekane Fuskel in West Germany.It has excellent abrasion resistance and impact resistance, and It has a small coefficient and is highly slippery, has strong stiffness and resistance to bending, and is durable against bending, so there is no risk of it becoming easily broken at the crease.

Further, a mechanism is provided at the upper left side of the mounting board 2 for projecting the coil bobbin 64, which has been wrapped with tape, from the bobbin shaft 62. That is, the guide tube 90 is attached to the mounting board 2.
is fixed, and the slide shaft 9 is inserted into the inner hole of this guide tube 90.
1 is slidably fitted, and the upper part of the pushing plate 92 is fixed to the front end of this slide shaft 91, and this pushing plate 9
2 is fitted into the holder 94 of the falling claw 93 which is slidably fitted onto the winding shaft 60, and the solenoid actuator 96 is fitted onto the front surface of the mounting board 2 via an L-shaped mounting plate 95. An engagement plate 98 is fixed to the front-rear operating shaft 97 of the actuator 96, and the groove at the tip of the engagement plate 98 is fitted into the pushing plate 92, and the rear end of the slide shaft 91 is A compression spring 100 is made to protrude from the rear surface of the mounting board 2 and is installed between the spring receiving part 99 at the rear end and the mounting board 2 to bias the slide shaft 91 rearward.

When using this device, first, the coil bobbin 6 which has been wound with a coil around the bobbin shaft 61
At the same time, the tape roll 19 is set between the tape roll shaft 17 and the flanges 33 of the pair of one-side flanged rollers 29, and three tapes 34 are pulled out from the tape roll 19 so that the adhesive surface is the top surface. Reverse S to the guide roller 51 of
At this time, the tape 34 is inserted between the leftmost guide roller 51 and the O-ring 53, and then pulled out to the upper surface of the elastic pressing part 74. Due to contact with the O-ring 53, the tape 3
4 side shift is prevented.

Next, the operation will be explained based on FIG. Each operation is sequentially controlled by a sequence circuit in a control box 101 provided on the base 1.

When the operator turns on the start switch, the start starts from the state shown in FIG. 4a, and as shown in FIG.
rotates upward to push up the sticking part slider 69 via the rollers 76, and the elastic pressing part 74 pushes up the tip of the adhesive tape 34 on this pressing part 74,
The adhesive end of the tape 34 is attached to the lower surface of the coil 63, and when the rotary solenoid 77 is demagnetized and the pressing part 74 is lowered, the motor 66
The coil bobbin 64 is rotated clockwise as shown in FIG. 4c, and the tape 34 is wound around the outer peripheral surface of the coil 63. At the beginning of winding of the tape 34, as shown in FIG. Because it rotates to
Initially, the slack portion of the tape between the tape roll 19 and the coil bobbin 64 is fed to the coil surface, so that no large tension is applied to the tape 34, and the tape 34 can be wound smoothly around the coil surface without resistance. After that, the tape 34 is forcibly peeled off from the tape roll 19 and wound around the coil surface a predetermined number of times, and the number of times is detected by a micro switch (not shown) provided on the winding shaft 60. Then, the counter counts up to the preset number of times and the motor 66 is stopped. Next, by driving the motor 15 and rotating the disk 10 as shown in FIG.
Swing to the right using as a fulcrum. At this time, since the winding shaft 60 is fixed and the coil bobbin 64 does not rotate, first the tape 3 is
4 is forcibly pulled out, and then the cutting edge 8 of the cutter 85
8 passes near the bottom surface of the coil 63, and the tape 3
Cut 4. As a result, the slider 3 is moved until the vertical support plate 44 is stopped by the retraction stopper 56.
7 retreats, the guide roller mounting plate 47 descends to the stopper 48, and the leading end of the tape 34 falls onto the upper surface of the elastic pressing section 74. The position of the leading end of this tape 34 is adjusted by a retraction stopper 56. Further, following the cutter 85, a labeler 89 rubs the unattached portion of the cut end of the tape wound around the coil 63 against the winding surface to attach it. Since the head plate 3 moves back to the left before the left free end of the labeler 89 comes off the coil surface, the left free end of the labeler 89 moves back to the coil 6 during this return movement.
There is no risk of getting caught on the cut end of the tape wrapped around 3. In this way, the head plate 3
When the disk 10 rotates, the disk 10 rotates once, which is detected by a micro switch (not shown) and the motor 15 is activated.
stops, and then solenoid actuator 96
The operating shaft 97 is operated to protrude toward the front, and the falling claw 93 moves toward the front via the engagement plate 98 and the pushing plate 92, causing the coil bobbin 64 to fall from the square shaft portion 62 of the bobbin shaft 61.

Note that the labeler 89 as the rubbing sheet-like body
may be provided by overlapping two or more sheets.

[Effect of idea]

According to the present invention, a cutter for tape cutting is movably faced near the coil bobbin, and a rubbing sheet made of ultra-high molecular weight polyethylene is attached to the back of the cutting edge of the cutter by folding it into a curved shape. However, since the tip of this rubbing sheet was made to protrude sufficiently to the opposite side of the cutting edge of the cutter to form a free end, the sheet could be removed before the free end of this sheet passed through the cut end of the tape on the coil side. It is possible to move the shaped body back, and therefore there is no risk that the rubbing sheet-like body will get caught on the cut end and scrape off the cut end during the return movement. Furthermore, since this rubbing sheet was made of ultra-high molecular weight polyethylene,
Even if the tip is a free end, it has the optimal stiffness for rubbing adhesive tape, eliminates the need for an elastic member like sponge rubber, has good slipperiness, and is resistant to wear even after long-term use. rarely occurs.
Furthermore, since it is only necessary to fix the non-free end of this sheet-like body, the attachment can be easily performed.

The finishing mechanism, which is constructed by folding and attaching a rubbing sheet to the back of the cutting edge of the cutter, has an extremely simple structure and can be provided at low cost. After the cutter cuts the tape, the cut end of the tape can be continuously rubbed against the wrapping surface by the rubbing sheet-like body.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the taping device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a perspective view of its main parts, and Figs. 4 a, b, c, and d are its functions. FIG. 17... Tape roll shaft, 19... Tape roll, 34... Tape, 63... Coil, 64...
Coil bobbin, 85... cutter, 88... cutting edge,
89...Labeler as a sheet-like body for rubbing.

Claims (1)

[Scope of utility model registration request] In a taping device that winds a single-sided adhesive tape pulled out from a tape roll rotatably supported by a tape roll shaft onto the surface of a coil of a coil bobbin that is rotated at a fixed position, a tape cutter is installed near the coil bobbin. A cutter for use is placed movably in front of the cutter, and a rubbing sheet made of ultra-high molecular weight polyethylene is folded back into a curved shape and attached to the back of the cutting edge of the cutter. A taping device characterized by having a free end sufficiently protruding from the opposite side of the cutting edge of the cutter.