JPH0478539B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape winding device for winding a magnetic tape, which is used when producing magnetic tape cassettes.

[Conventional technology]

One of the steps in producing magnetic tape cassettes such as video cassettes and digital audio cassettes is the step of winding the magnetic tape onto a hub built into the cassette.

This winding process is performed by a tape winding device by connecting a pair of hubs built into the cassette with a leader tape in advance and supplying this to the tape winding device. When the tape winding device receives a pair of hubs connected by a leader tape, it cuts the leader tape approximately in the center of the two hubs, and connects the cut end of the leader tape and the leading end of the magnetic tape with adhesive tape. Connect the magnetic tape, rotate the hub on the side to which the magnetic tape is connected, and wind the magnetic tape around the outer circumference of the hub.Once the magnetic tape has been wound, cut the magnetic tape at an appropriate point and remove the cut magnetic tape. The magnetic tape winding process is performed by connecting the end of the leader tape to the other cut end of the leader tape using adhesive tape. As such a magnetic tape winding device, for example,
61-46904. The device is adapted to automatically carry out the winding steps as described above.

This device is supplied with a pair of hubs connected by leader tape attached to a small plate called a pallet. The device then takes the hub together with the pallet into the device and performs the winding step.

[Problem that the invention seeks to solve]

By the way, the above-mentioned device is inefficient because the cycle time of loading the pallet into the device, winding the magnetic tape around the hub attached to the pallet, and ejecting the pallet from the device is long. There were two drawbacks: the structure of the entire device was complicated.

The reason for this shortcoming is that before this device winds the magnetic tape onto the hub attached to the pallet, the hub is removed from the pallet, transferred to the take-up reel stand on the take-up device side, and the magnetic tape is wound. This included the step of taking up the hub again and returning it from the reel stand to the pallet.

The present invention provides an improved device for the conventional magnetic tape winding device as described above, which shortens the cycle time. A further object of the present invention is to provide a magnetic tape winding device with a simple configuration.

[Means for solving problems]

To achieve such an object, the present invention provides a tape winding device for winding a magnetic tape onto one side of a pair of hubs connected to each other by a leader tape, and includes a supply table on which a reel of the magnetic tape is mounted; a pallet adapted to support a pair of hubs and provided with a winding table for rotatably supporting one side of the hub; a pallet holder for accommodating and positioning the pallet; A winding shaft that can engage a winding table of a pallet held in a pallet holder and that can rotationally drive the winding table of the pallet, and a pair of hubs supported by the pallet, the leader tape is A pull-out arm for pulling out the leader tape, a splicing mechanism that cuts the leader tape pulled out by the pull-out arm and joins the cut end of the leader tape and the leading end of the magnetic tape, and the winding table are rotationally driven. and positioning means for positioning the winding table on the winding shaft so that the winding table does not come into contact with the pallet during the winding.

[Effect]

The present invention is a magnetic tape winding device that takes the above measures.

That is, a pair of hubs connected by a leader tape are mounted on a pallet, and one hub can be rotated by a winding shaft while being mounted on a winding table of the pallet.

Further, when the pallet winding table and the winding shaft are engaged, the table presser prevents the winding table and the pallet body from coming into contact with each other.

〔Example〕

FIG. 1 shows an embodiment of the invention. 1 is a supply reel stand. 2 is a magnetic tape. The magnetic tape 2 is mounted on a supply reel stand 1 as a supply reel 3 wound into a long length. The supply reel stand 1 is rotatably driven by a yawter (not shown). 4 is a supply conveyor. 5 is a winding station. 6 is a discharge conveyor. The pallets to be described later are delivered from the supply conveyor 4.
It is supplied to a winding station 5 and flows freely to a discharge conveyor 6. The magnetic tape 2 is supplied from the supply reel stand 1, and includes a guide roller 7, a tacho roller 8, a guide roller 9, a tension arm 10, and a guide roller 1.
1, air column 12, guide rollers 13, 14
The winding station 5 is reached via the winding station 5. FIG. 2 is a plan view of the pallet 15, FIG. 3a is a front view of the pallet 15, and FIG. 3b is a top view of the pallet 15.
This figure is partially cut away according to the front view of Figure a. The pallet 15 is provided with mounting shafts 17 and 18 on a base 16 for mounting a pair of hubs (not shown) built into the cassette. The pair of hubs are mounted on mounting shafts 17 and 18, one at a time. The mounting shaft 17 is fixed to the base 16 and has a cylindrical shape. The hub mounted on the mounting shaft 17 is rotatable with respect to the mounting shaft. 19 is a winding table. The top surface of the winding table 19 has a smooth table surface 41.
is formed. The mounting shaft 18 is implanted in the table surface 41 of the winding table 19. The mounting shaft 18 is provided with a protrusion 20 on its outer periphery. A hub mounted on the mounting shaft 18 is adapted to mesh with the protrusion 20. Therefore, the hub mounted on the mounting shaft 18 rotates together with the mounting shaft 18. The winding table 19 is rotatably attached to the base 16 with a certain amount of clearance. That is, if the winding table 19 is accurately positioned with respect to the base 16, it can rotate without contacting the base 16. Lower end 2 of take-up table 19
1 is provided with a drive hole 22. This drive hole 22 is adapted to fit a winding shaft, which will be described later. 23 is a positioning groove provided in the base 16. The positioning groove 23 has V-shaped walls 24 and 25. 4 is an enlarged view of the winding station 5 shown in FIG. 1, and FIG. 5 is a front view seen from the direction of arrow A shown in FIG. 4 and 5, the winding station 5 accommodates the pallet 15 shown in FIG. 2, and the pallet 15 has a pair of hubs 5.
4 and 55 are shown attached. 26 is a shift panel. Shift panel 26 is supported on panel base 30 by slide rods 27, 28 and slide rod 29 shown in FIG. 31 and 32 shown in FIG. 5 are slide bearings. Slide bearings 31 and 32 are attached to the panel base 30
are attached to the slide rod 2, respectively.
7 and 28 are slidably supported. 33 is a cylinder. This cylinder 33 is attached to the panel base 30. cylinder 3
The tip of the third rod 34 is connected to the shift panel 26. As a result, the shift panel 26
It can be moved up and down by the operation of the cylinder 33. FIG. 5 shows the shift panel 26 in the raised position. 35 is a pallet holder. Pallet holder 35 accommodates pallet 15. The pallet holder 35 is attached to the shift panel 2.
The guide rails 36 and 37 are attached to the guide rails 6 and 6. The guide rail 36 has guide blocks 38 and 39 attached to its upper end, and the upper end 40 of the guide rail 37 is L-shaped.
It is designed to guide the pallets 15 housed in. 42 is a positioning cylinder. Positioning cylinder 42 is attached to shift panel 26. The rod 43 of the positioning cylinder 42 can protrude into the inside of the pallet holder 35. FIG. 4 shows the position where the rod 43 protrudes. The rod 43 engages with the positioning groove 23 of the pallet 15 at a position protruding inside the pallet holder 35. Then, the pallet 15 is pressed against the guide rail 37 and positioned with respect to the guide rail 37,
Positioning is also performed in the left and right directions by the positioning grooves 23. 44 and 45 shown in FIG. 4 are drawer arms. The pull-out arms 44 and 45 are attached to rotating shafts 48 and 49 of rotary actuators 46 and 47, respectively. Rotary actuators 46, 47 are at angles 50, 5
1 to the shift panel 26. The drawer arms 44 and 45 are each
It is rotatable by the operation of rotary actuators 46 and 47, and is shown in FIGS. 1 and 4.
It is rotatable from the positions 41 and 451 to the positions shown at 44 and 45. Also, as shown in Figure 5,
Guide pins 5 are provided at the tips of the drawer arms 44 and 45.
2,53 is attached. guide pin 52,
The height of 53 corresponds to a leader tape 56 stretched between hubs 54 and 55 mounted on mounting shafts 17 and 18 of pallet 15 shown in FIG. Therefore, the drawer arm 44,
When the pull-out arms 44 and 45 are in the initial positions shown at 441 and 451, the leader tape 56 is also in the position shown in FIG. is also pulled out to the position shown at 561. Note that the drawer arms 44 and 45 rotate only when the shift panel 26 is in the raised position. Fourth
In the figure and FIG. 5, 57 is a splicing block. The splicing block 57 is
It is composed of a fixed block 58 and a movable block 59. The fixed block 58 is attached to the panel base 30, and the movable block 59 is movable up and down with respect to the fixed block 58.

The fixed block 58 and the movable block 59 are provided with grooves 60, 61, 62 for holding the leader tape 56 and the magnetic tape 2. groove 60,
61 and 62 each have a group of small holes (not shown) at the bottom of the groove, and each group of small holes can be connected to a negative pressure source as required. Therefore, when the magnetic tape 2 or the leader tape 56 is attached to the grooves 60, 61, 62 and the previous small hole group is connected to the negative pressure source, the magnetic tape 2 or the leader tape 5
6 is adapted to be attracted and fixed to the bottoms of the grooves 60, 61, and 62. Further, FIG. 5 shows the position in which the movable block 59 has been lowered, and in this position, the groove 60 of the fixed block 58 and the movable block 5
9 grooves 61 are lined up in a row. On the other hand, movable block 5
In the raised position of the movable block 9, the groove 60 and the groove 62 of the movable block 59 are aligned. The movable block 59 is moved by a cylinder (not shown). Note that when the pull-out arms 44, 45 are rotated to the positions shown at 441, 451, the leader tape 56 pulled out by the pull-out arms 44, 45 is located outside the splicing block 57. As a result, the leader tape 56 does not contact the splicing block 57 when the shift panel 26 moves up and down.

In FIG. 5, 63 is a winding shaft. The winding shaft 63 is rotatably supported by a bearing 64. The bearing 64 is slidably supported by a rod 65 attached to the panel base 30. Although not shown, a cylinder rod attached to the panel base 30 is connected to the bearing 64, and can be moved up and down by the operation of the cylinder. Further, the winding shaft 63 is rotationally driven by a motor (not shown). The vertical movement range of the winding shaft 63 is such that when the shift panel 26 is in the raised position, the winding table 19 of the pallet 15 housed in the pallet holder 35 can be rotated. Further, when the winding shaft 63 is lowered, when the shift panel 26 is in the lowered position,
Pallet 15 housed in pallet holder 35
This position allows the winding table 19 to be rotated. In addition, in FIG. 5, the winding shaft 63
indicates the lowest position.

FIG. 6 is a view showing the winding station shown in FIG. 4 from the direction shown by arrow B, and is a partially sectional view. Further, in FIG. 6, the shift panel 26 is shown in a lowered position, and the winding shaft 63 is shown fitted into the winding table 19 of the pallet 15 housed in the pallet holder 35. It shows.

In FIGS. 4 and 6, 66 is a table holder. 67 is an arm that constitutes the table holder 66. One end of the arm 67 is attached to a rotating shaft of a rotary actuator 68. The rotary actuator 68 is slidably supported on slide rods 71 and 72 by an angle 70. slide rod 7
1 and 72 are vertically attached to the panel base 30 by a base 73. Although not shown, a cylinder rod attached to the panel base 30 is connected to the angle 70. Therefore, the arm 67 can move up and down along the slide rods 71 and 72 by the movement of this cylinder. Further, the arm 67 is rotatable by the operation of the rotary actuator 68 from the position 67 shown in FIG. 4 to the position shown at 671. 74 is a disk. disk 74
is supported by the other end of the arm 67 and is rotatable with respect to the arm 67. 75 is a leaf spring. A leaf spring 75 is attached to the arm 67. The leaf spring 75 always urges the disk 74 downward.

When the arm 67 is rotated to the position shown at 671, the disk 74 is accommodated in the pallet holder 35 and is positioned directly above the winding table 19 of the pallet 15 that has been positioned. At that position, when the arm 67 moves downward, the disk 7
4 is adapted to fit with the mounting shaft 18 of the winding table 19. In Figure 6, disk 74
shows a state in which the mounting shaft 18 is fitted. As shown in FIG. 6, the disk 74 has a hole 76 inside. The hole 76 fits into the mounting shaft 18 of the winding table 19. At this time, the hub 55 is attached to the mounting shaft 18.
is attached, the edge 77 of the hole 76 of the disk 74 contacts the hub 55 and presses the hub 55 against the take-up tape 19.

Then, since the pallet 15 is positioned within the pallet holder 35, when the winding shaft 63 is fitted onto the winding table 19, the winding table 19 does not come into contact with the pallet 15. Further, the disk 74 is positioned by the mounting shaft 18 and the hub 55 and is pushed down by the spring 75, so that it does not come into contact with the arm 67. Furthermore, the disk 74 is
A guide surface 100 is provided. The guide surface is parallel to the table surface 41 of the take-up table 19 and guides the magnetic tape 2.

The table presser 66 is the winding table 19
This is positioning means for positioning the winding shaft 63 on the winding shaft 63. Also, the disk 74 of the table holder 66
This also prevents the magnetic tape 2 from being undone.

Next, in FIG. 1, 80 and 81 are return actuators. Return actuator 80,8
1 is mounted on the panel base 30. Rod 8 of return actuator 80, 81
2, 83 are adapted to be at the same height as the drawer arms 44 and 45 when the shift panel 26 is in the lowered position. The return actuators 80, 81 slightly move the puller arms 44, 45 when the shift panel 26 is in the lowered position and the puller arms 44, 45 are pulling out the leader tape 56, as shown in FIG. It works to push it back. Then, the leader tape 56 pulled out by the pull-out arms 44 and 45 comes into contact with the splicing block 57.

In FIG. 1, 84 is a cutting blade. Cutting blade 8
4 is a splicing block 5 shown in FIG.
It passes through a gap 85 between the fixed block 58 and the movable block 59 of No. 7. As a result, the cutting blade 84 cuts the leader tape 5 held in the grooves 60, 61, 62 of the splicing block 57.
6 or to cut the magnetic tape 2.

In FIG. 1, 86 is an adhesive tape supply mechanism. The adhesive tape supply mechanism 86 is attached to the panel base 30 and can move forward and backward toward the splicing block 57.

The adhesive tape supply mechanism 86 is capable of supplying the tip roller 88 with adhesive tape cut to a certain length from a table reel 87 attached to the adhesive tape supply mechanism 86 . When the adhesive tape supply mechanism 86 moves forward and reaches the splicing block 57, the leader tape 56 held by the splicing block 57 and the cut end of the magnetic tape 2 are connected by the adhesive tape. Note that the splicing block 57, the cutting blade 84, and the adhesive tape supply mechanism 86 constitute a splicing mechanism 130.

Further, in FIG. 1, the tacho roller 8 is designed to rotate as the magnetic tape 2 runs, and the magnetic tape 2 is detected by a detector provided on the tacho roller 8 for detecting the rotation of the tacho roller 8. It is designed to detect when the vehicle is running. The output result of this detector is used to control the running speed of the magnetic tape 2 and to detect the length of the magnetic tape 2 wound around the hub 55.

In FIG. 1, the air column 12 is composed of an air outlet 89 and an air chamber 90.
The magnetic tape 2 has an air outlet 89 and an air chamber 90.
It is now possible to travel between the two. The air outlet 89 can blow air toward the air chamber 90 as needed. When the air outlet 89 blows out air and there is slack in the magnetic tape 2, the slack in the magnetic tape 2 is accommodated in the air chamber 90.

Next, the operation of the configuration as described above will be explained.
First, a supply reel 3 on which a long magnetic tape 2 is wound.
is attached to the reel stand 1 as shown in FIG.
The leading end of the magnetic tape 2 is guided into the groove 62 of the splicing block 57 shown in FIG. Then, when the groove 62 is brought into the suction state, the leading end of the magnetic tape 2 is attracted and held by the groove 62.

The pallet 15 shown in FIG. 2 is placed on the supply conveyor 4 shown in FIG. 1 and fed toward the winding station 5. At this time, the pallet 15 is attached to the leader tape 56 as shown in FIG.
A pair of hubs 54 and 55 connected by
7 and 18. When the pallet 15 is fed to the take-up station 5, the shift panel 26 has been shifted to a raised position, as shown in FIG. When a pallet 15 is supplied from the supply conveyor 4 while the shift panel 26 is in the raised position, the pallet 15 is accommodated in the pallet holder 35.

Next, as shown in Fig. 4, the positioning cylinder 4
2, the pallet 15 is positioned in the pallet holder 35. Next, the winding shaft 63 shown in FIG. 5 is raised toward the pallet 15. Then, the winding shaft 63 is fitted with the winding table 19 of the pallet 15. Thereafter, the take-up shaft 63 rotates the take-up table 19 to apply tension to the leader tape 56 so that the take-up table 19 rotates counterclockwise in FIG.

Next, as shown in FIG. 4, the reader pull-out arms 44, 45 are rotated from the initial positions 441, 451 to the positions 44, 45. Then, the leader tape 56 is pulled out and reaches the position shown at 561. Next, the shift panel 26 is lowered. Then, the leader tape 56 is located just in front of the grooves 60, 61 of the splicing block 57 shown in FIG. Next, the return actuators 80, 81 shown in FIG. 1 operate to push back the leader pull-out arms 44, 45 slightly, and the grooves 60, 61 of the splicing block 57 are brought into a suction state. Then, the leader tape 56 is attracted to the grooves 60 and 61 and fixed.

Next, the table holder 66 is rotated, and the table holder disk 74 is fitted onto the winding table 19 as shown in FIG. Then, due to the biasing force of the spring 75, the winding table 1
9 is pressed against the winding shaft 63 and is completely positioned. As a result, the pallet 15 and the winding table 19 no longer come into contact with each other.

Next, the cutting blade 84 shown in FIG. 1 is operated. Then, the leader tape 56 is connected to the groove 60 and the groove 6.
1. Next, the movable block 59 shown in FIG. 5 is shifted so that the grooves 60 and 62 are aligned. Next, the adhesive tape supply mechanism 86 shown in FIG.
operates, and the leader tape 5 held in the groove 60
6 and the magnetic tape 2 held in the groove 62
Connect the leading ends of the tape with adhesive tape. Then, while releasing the suction state between the grooves 60 and 62,
The winding shaft 63 is rotationally driven. Then, the magnetic tape 2 is wound around the hub 55 shown in FIG.
At this time, the magnetic tape 2 is placed on the winding table 19.
table surface 41 and guide surface 10 of the disk 74
Since it is guided by 0, no disturbance occurs when it is wound around the hub 55. When the magnetic tape 2 of a predetermined length is wound, the running of the magnetic tape 2 is stopped. The grooves 60 and 62 of the splicing block 57 are brought into the suction state again to attract and hold the magnetic tape 2. And the cutting blade 84
Then, the magnetic tape 2 is cut. Once this has been done, the splicing block 57 is operated to align the grooves 60 and 61, and the leader tape 56 held in the groove 61 by adhesive tape.
The cut end of the magnetic tape 2 held in the groove 60 is connected.

Next, return actuators 80, 8 shown in FIG.
When 1 is released, the drawer arms 44 and 45 also
Open outward. At the same time, the table holder 66 is returned to its original position as shown in FIG. Next, shift panel 26 is raised. Then, the winding table 19 is rotated while the leader pull-out arms 44 and 45 are rotated and returned to the initial position. Finally, the positioning cylinder 42 is released and the winding shaft 63 is lowered.

This completes the winding process. When the next pallet 15 enters the pallet holder 35,
The pallet 15 that has been completely wound up is pushed out toward the discharge conveyor 6, completing one cycle.

[Other Examples]

FIG. 7 shows the winding table 19 of the pallet 15, which is one of the components of the present invention, connected to the winding shaft 63.
This figure shows another embodiment in which the means for positioning is changed. The difference from the configuration shown in FIG. 6 is the configuration of the winding table 19 and the winding shaft 63. As shown in FIG. 7, a positioning plate 120 containing a magnetic material such as iron is attached to the lower end of the winding table 19. The lower surface 121 of the positioning plate 120 is finished smoothly, and the positioning plate 120 rotates together with the winding table 19. The winding shaft 63 includes a pulley 124 driven by a drive shaft 122. 1
23 is a bearing that rotatably supports the pulley 124. Further, the pulley 124 is made of a non-conductive and non-magnetic material, and has a smooth upper surface 125. 126
is an electromagnetic coil. The electromagnetic coil 126 is fixed to the bearing 123. When a current is applied to the electromagnetic coil, the positioning plate 120 moves to the pulley 124.
It has come to be closely attached to 127 is a protrusion provided on the pulley 124. The protrusion 127 is
The pulley 124 and the winding table 19 fit into the hole 128 provided in the winding table 19.
It is designed to align the rotation axis of the With the above configuration, the winding table 19 is reliably positioned with respect to the pulley 124 of the winding shaft 63 by energizing the electromagnetic coil.

According to the embodiment shown in FIG. 7, the spring 75 may be weak because the table holder 66 only has to perform the function of preventing the magnetic tape 2 from being wound irregularly.

〔effect〕

Since the present invention has the above configuration, the pallet 15 itself can be provided with the winding table 19, and when the winding shaft 63 and the winding table 19 are fitted and positioned, the winding table 19 The pallet 15 does not come into contact with the pallet 15.
Therefore, although the structure of the pallet 15 is simple, the hub 54 attached to the pallet 15,
The magnetic tape 2 can be wound onto the hub 55 without removing the tape 55 from the pallet 15. Therefore, there is an effect that the winding cycle time can be considerably shortened.

[Brief explanation of drawings]

FIG. 1 is an overall explanatory diagram of an embodiment of the present invention, and FIG.
3A and 3B are a plan view, a front view, and a vertical sectional view showing the structure of the pallet, respectively. FIG. 4 is an enlarged explanatory view of the winding station 5, and FIG. 5 is an arrow shown in FIG. 4. 6 is a front view seen from the direction indicated by arrow A in FIG. 4, and FIG. 7 is a partially longitudinal front view showing another embodiment of the present invention. 1... Supply reel stand, 2... Magnetic tape, 4...
... Supply conveyor, 5 ... Winding station,
6...Discharge conveyor, 15...Pallet, 17,
18... Mounting shaft, 19... Winding table for pallet 15, 26... Shift panel, 35... Pallet holder, 44, 45... Drawer arm, 54, 55... Hub, 56... Leader tape, 57... Splicing block, 63...
Winding shaft, 66...Table holder, 126...
...Electromagnetic coil, 130...Splicing mechanism.

Claims (1)

[Claims] 1. A tape winding device for winding a magnetic tape onto one side of a pair of hubs connected to each other by a leader tape, comprising a supply table on which a reel of the magnetic tape is mounted, and a supply table supporting the pair of hubs. a pallet having a winding table for rotatably supporting one side of the hub; a pallet holder for accommodating and positioning the pallet; and a pallet holder for storing and positioning the pallet. a winding shaft capable of engaging with a winding table and rotationally driving the winding table of the pallet; a pull-out arm for pulling out the leader tape from a pair of hubs supported by the pallet; and the drawer. a splicing mechanism that cuts the leader tape pulled out by the arm and joins the cut end of the leader tape and the leading end of the magnetic tape; A tape winding device comprising positioning means for positioning a winding table on a winding shaft so as not to contact the pallet.