JPH0422305B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic tape winding device for winding a magnetic tape into an empty cassette case to complete a tape cassette.

[Prior art and its problems]

The process of producing a cassette tape for recording or audio recording includes the process of winding a magnetic tape into an empty cassette case. One way to proceed with this process is to use a so-called V-O (V-O) system, in which a pair of empty reels built into a cassette case are connected in advance with leader tape.
There is a method using ZERO). An example of such a technique is JP-A-58-175172.
According to this, when winding the magnetic tape, first open the movable lid of the cassette case and pull out the leader tape.

Next, the leader tape is cut, one of the cut ends is connected to the magnetic tape, and the hub is rotated to wind up the magnetic tape. When winding is completed, the magnetic tape is cut and the wound end of the magnetic tape is connected to the other end of the leader tape to complete the cassette case.

In the above-described cassette tape production apparatus, in order to pull out the leader tape from inside the cassette case, a pin at the tip of a pull-out arm that can move forward and backward is engaged with the leader tape, and the pull-out arm is moved into a cylinder. The drawer is pulled out by driving the machine. Here, let us consider a case where the leader tape gets pinched during the drawing process or the length of the leader tape is insufficient. Since the pull-out arm tends to continue moving even after the leader tape runs out of length, there is a problem in that the leader tape may be torn off or the pull-out arm or the pin may be damaged.

Therefore, in the present invention, even if the leader tape gets pinched during the drawing process or the length of the leader tape is shorter than the specified length, the automatic tape winder itself and the leader tape are prevented from being damaged. The purpose is to

[Means for solving problems]

In order to achieve such an object, the present invention is an automatic tape winding device for winding a magnetic tape in a cassette case having a movable lid, which comprises a reel stand for mounting a reel wound with a long magnetic tape; , a cassette holder for holding the cassette case, a lid opening/closing means for opening the movable lid of the cassette case during the process of mounting the cassette case on the cassette holder, and a tape pulling means for pulling out the leader tape from the cassette case. comprising: a joining stage for joining the leader tape pulled out by the tape pulling means to the magnetic tape; and a winding shaft for rotating a hub in the cassette case and winding the tape;
The tape pull-out means includes a rotatable first arm, a pin that engages the leader tape at one end, and a first arm that is independent of the first arm that is rotatable in conjunction with the first arm. a second arm, a cylinder for rotating the first arm; To provide an automatic tape winding device characterized in that it is constructed by a spring biasing an arm.

[Effect]

The magnetic tape led out from the reel is supplied to the joining stage via a predetermined path. On the other hand, the movable lid of the cassette case housed in the cassette holder is opened by the lid opening/closing means, and the leader tape is pulled out by the tape pulling means. Next, the pulled leader tape is cut, and its cut end is joined to the magnetic tape, and then the magnetic tape is wound by a predetermined amount onto a hub in a cassette case via a winding shaft. After winding is completed, the magnetic tape is cut, and the cut ends are joined to the leader tape.

During the process of pulling out the leader tape, if the leader tape gets stuck somewhere,
Or, if the leader tape is shorter than the shortest length for the automatic winding device to operate normally, if the leader tape becomes tense and the tension exceeds the spring force during the movement of the first arm by the cylinder, the first arm Only the second arm continues to rotate, and the second arm stops.

〔Example〕

Preferred embodiments of the present invention are shown below. FIG. 1 is a schematic front view of an automatic tape winding device according to an embodiment.

The reel stand 20 rotatably holds a reel 21 on which a magnetic tape 36 is wound. The magnetic tape 36 unwound from the reel 21 is passed through the cleaner 110,1.
11, it travels guided by a tension arm 112 and guide rollers 113, and is led to a bonding stage to be described later. A cassette holder 10 having a substantially U-shaped groove is provided so as to be movable forward and backward relative to a panel base 30, and is capable of accommodating a cassette case 11. The winding shaft 42 can be rotated by a motor (not shown). This winding shaft 42 is connected to the cassette case 1.
It engages with the hub in 1 and rotates the hub. Plate 1 fixed to panel base 30
Reference numeral 9 is attached to the panel base 30, and constitutes a lid opening/closing means that engages with and opens the lid 11a of the cassette case 11 when the cassette holder 10 moves.

Tape (magnetic tape 36 or leader tape 3
5) A block 16 with one groove 103 for adsorbing tape, two grooves 101 for adsorbing tape,
102, a block 17 that can move forward and backward with respect to the block 16, and a cutter 18 that can move linearly forward and backward between the blocks 16 and 17 are connected to the sub panel 3.
It is attached to 1. The splicer 23 can move forward and backward relative to the blocks 16 and 17, and cuts the splicing tape 23a to an appropriate length and presses it onto the magnetic tape 36 or leader tape 35 that is attracted to the blocks 16 and 17. Block 16, block 17, cutter 18, sub-panel 31, and splicer 23 constitute a joining stage. The sub-panel 31 can move forward and backward with respect to the panel base 30, and
The groove 103 of 6 is connected to the panel base 30 by the pin 4.
A first position where the groove 103 is at the same height as the tape guide groove 43 of No. 1 and a second position where the groove 103 is at the same height as the splicer 23 are taken.

The first arm 58 and the second arm 59 are connected to the shaft 5
Each can be rotated independently around 6.

The second arm 59 has a leader tape 35 at its tip.
It consists of a tip arm 59a exposed on the front side of the panel base 30 having a pin 15 that engages with the panel base 30, and a support arm 59b connected to the tip arm 59a via a mounting shaft 57 and provided on the back side of the panel base 30.

FIG. 2 is a view of the second arm 59 viewed from the back side of the panel base 30.

The first arm 58 is driven by the cylinder 50 and is engageable with the movable limiter 52 and the mounting shaft 57 by means of the stop pin 12 . second arm 5
9 is biased toward the first arm 58 by a spring 51. The position of the movable limiter 52 is set in advance according to the length of the leader tape 35. The sensor 55 detects that the second arm 59 is in the position of the fixed limiter 53, and the sensor 54 detects that the second arm 59 has pulled out the leader tape at least by a length that allows normal operation. . a rotating arm 40 having a pin 41 at its tip that engages with the leader tape 35;
is rotatable and assumes an initial position shown in FIG. 1 in which it engages with the leader tape 35 in the cassette case 11, and a pulled-out position in which the leader tape 35 is pulled out above the block 16 shown in FIG. 1st
The arm 58, the second arm 59, the spring 51, the cylinder 50, the pin 15, the rotating arm 40, and the pin 41 constitute tape pulling means.

The operation of this apparatus configured as described above will be explained below.

First, in the initial state, the magnetic tape 36 is led out from the supply reel 21, passes through a predetermined path, and is attracted to the groove 101 of the block 17. The cassette holder 10 is located on the side away from the panel base 30, the first arm 58 and the second arm 59 are located on the fixed limiter 53 side as shown in FIG. is being detected. As shown in FIG. 1, the rotating arm 40 is located on the side of the winding shaft 42, which is the above-mentioned initial position. At this time, the sub-panel 31 is in the first position described above.

The cassette case 11 is stored in the cassette holder 10 in this initial state.

Next, attach the cassette holder 10 to the panel base 30.
Pin 15 and pin 41 by moving to the side.
is engaged with the leader tape 35, and the movable lid 11a is pushed open with the plate 19. Thereafter, the process moves to a step of pulling out the leader tape 35.

The drawing process of this leader tape 35 will be explained below. Before being pulled out, the first arm 58 and the rotary arm 40 are in the initial position described above. This state is shown in FIGS. 1 and 2. Then, the first arm 58 is rotated by the cylinder 50 to the position of the movable limiter 52. In conjunction with this, the second arm 59 biased by the spring 51 moves, and the leader tape 35 is pulled out. Sensor 54 detects that the second arm has withdrawn leader tape 35 at least as far as possible for normal bonding. Figure 4 shows the second arm 59 in this state.
This is a diagram of the part seen from the back side. After the rotary arm 40 rotates to the above-mentioned pull-out position in conjunction with the movement of the cylinder 50 and pulls out the leader tape 35 above the block 16, the groove 102 and the groove 1
03 adsorbs the leader tape 35. FIG. 6 is a partial front view of the bonding stage in this state. When the suction is completed, the first arm 58 and the rotating arm 40 return to their initial states.

Next, move the cutter 18 back and forth to remove the leader tape 3.
Cut 5. Then, the magnetic tape 36 which is attracted to the groove 101 by sliding the block 17,
One of the cut pieces of the leader tape 35 adsorbed to the groove 103 is butted against each other. Here sub panel 3
1 to the aforementioned second position, the groove 103 is positioned in front of the splicer 23, and the splicer 23 is reciprocated to join the magnetic tape 36 and the leader tape 35 on the groove 103. After this sub panel 31
Return to the above-mentioned first position again, and then rotate the rotating arm 4.
0 to the above-mentioned pull-out position, then open the groove 10.
3 and the groove 101 are released. Rotating arm 40
In the above-mentioned unloading position, the magnetic tape 36 to be wound up is at an angle that does not come into contact with other members, so that the magnetic tape 36 is not damaged. Here, the winding shaft 42 is rotated to wind up the magnetic tape 36 by a predetermined amount. When the winding is finished, the cylinder 50 is contracted again and the first arm 5
8 to the position of the movable limiter 52, the second arm 59 operates in conjunction to pull out the magnetic tape 36 above the groove 103 and the groove 101. Thereafter, the grooves 103 and 101 attract the magnetic tape 36, and the first arm 58 and the rotating arm 40 are returned to the above-mentioned initial positions, and the cutter 18 reciprocates to cut the magnetic tape 36.

Next, the block 17 slides again and returns to its initial position, and the leader tape 35 on the groove 102
and the cut piece on the wound side of the magnetic tape 36 on the groove 103 are butted against each other. Here sub panel 31
is moved to the above-mentioned second position and the splicer 23 is operated to join the leader tape 35 and the magnetic tape 36 on the groove 103, and then the sub panel 31 is moved again.
is returned to the above-mentioned first position.

Next, the rotating arm 40 is rotated to the above-mentioned pull-out position, and after releasing the suction of the grooves 103 and 102, the rotating arm 40 is rotated again to the above-mentioned initial position, and at the same time, the winding shaft 42 is The magnetic tape 36 and leader tape 35, which have been joined by applying a slight torque, are smoothly stored in the cassette case 11.

Next, the cassette holder 10 is returned to its initial position, the movable lid 11a is closed, and the entire process is completed.

Here, let us consider a case where the leader tape 35 gets stuck somewhere in the process of pulling out the leader tape 35, or where the leader tape 35 is shorter than the shortest length at which the automatic winding device normally operates. The cylinder 50 contracts and the first arm 5
In the process of moving the leader tape 35
When the tension becomes tight and the tension exceeds the force of the spring 51, only the first arm 58 continues to rotate, and the second arm 59 stops. FIG. 5 is a view of the state when the leader tape 35 has an abnormality as described above, as viewed from the back side of the second arm 59.
In this way, even if there is an abnormality in the leader tape 35, the second arm 59 will stop, so the second arm 59 will stop.
The main body of the device, such as the arm 59 and pin 15, and the leader tape 35 will not be damaged. Further, if the sensor 54 cannot detect the second arm 59 even after a certain period of time has passed since the cylinder 50 starts retracting, it is possible to issue an alarm indicating that there is some abnormality in the leader tape 35, and to issue an alarm as appropriate. Countermeasures can be taken.

Further, the movable limiter 52 is set in a direction to widen the movable range of the first arm 58, and the movable limiter 52 is
It is also possible to check whether the length of the leader tape 35 pulled out from the cassette case 11 by the second arm 59 is appropriate without damaging the leader tape 35 by using the sensor 54 that detects the movable range of the leader tape 9. . That is, when the first arm 58 is rotated from the initial position using the sensor 54 as a detection means, and the second arm 59 is pulled out to the state where the leader tape 35 is stretched, the second arm 58 is first rotated from the initial position. Arm 59 stops and first arm 58 continues to rotate. It can also be determined that the leader tape 35 of the cassette case 11 has a regular length when the stopped position of the second arm 59 passes through the sensor 54.

〔effect〕

As described above, according to the present invention, the first arm is driven by a cylinder, and the second arm is biased against the first arm by a spring and engages with the leader tape by a pin provided at one end. With this provision, even if some abnormality occurs in the leader tape, the second arm will stop and the leader tape or the automatic winding device itself will not be damaged. In addition, by adjusting the position of the movable limiter, it is possible to accommodate leader tapes of various lengths, and in addition,
By installing a sensor that detects the position of the second arm, it is possible to know whether the leader tape has the length necessary for normal operation, and the leader tape is normal regardless of the position of the movable limiter. This has the effect that a warning can be issued if the length is less than the minimum length necessary for a certain operation.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of an automatic videotape winder according to the present invention, FIG. 2 is a partially enlarged explanatory view showing the initial positions of the first arm 58 and the second arm 59, and FIG. 3 4 is a perspective view of the bonding stage and the tape drawing means, FIG. 4 is a partially enlarged explanatory view showing the positions of the first arm and the second arm when tape drawing is completed normally, and FIG.
The figure is a partially enlarged explanatory diagram showing the positions of the first arm and second arm in the event that there is some kind of abnormality in the leader tape. Figure 6 shows the joining stage and the tape being pulled out after the leader tape has been pulled out. It is a partially enlarged explanatory diagram of the means. 10...Cassette holder, 11...Cassette case, 11a...Lid, 16...Block, 17...Block, 18...Cutter, 20...Reel stand, 21...Reel, 23...Splicer, 23a...Splicing tape, 35...Leader tape, 36 ... Magnetic tape, 40... Rotating arm, 42... Winding shaft, 50...
Cylinder, 51... Spring, 52... Movable limiter, 5
3...Fixed limiter, 55...Sensor, 58...First arm, 59...Second arm.

Claims (1)

[Scope of Claims] 1. An automatic tape winding device for winding a magnetic tape in a cassette case having a movable lid, comprising: a reel stand for mounting a reel wound with a long magnetic tape; and the cassette. a cassette holder for holding a case; a lid opening/closing means for opening the movable lid of the cassette case during the process of mounting the cassette case on the cassette holder; a tape drawer for pulling out the leader tape from the cassette case; and the tape drawer. a joining stage for joining the leader tape pulled out by the means with the magnetic tape; and a winding shaft for rotating a hub in the cassette case to wind up the tape, the tape pulling means being rotatable; a second arm that is independent of the first arm and that is rotatable in conjunction with the first arm and has a pin that engages with the leader tape at one end; the first arm; and a spring that biases the second arm against the first arm so that the second arm rotates in response to the rotation of the first arm. An automatic tape winding device characterized by: 2. The automatic tape winding device according to claim 1, further comprising a limiter that limits the movement range of the first arm according to the length of the leader tape. 3. A sensor for detecting the position of the second arm, and a detection means for detecting that the leader tape has at least a length that allows the automatic winding machine to operate normally in the process of pulling out the leader tape. The first claim characterized in that
The automatic tape winding device according to item 1 or 2.