JPH08329561A - Device for neatly winding magnetic tape of tape cassette - Google Patents

Abstract

PURPOSE: To prevent the irregularity of tape edges in case of winding up a magnetic tape by supporting a touch roller by a roller arm member whose axial line is inclined in the breadthwise direction of the magnetic tape. CONSTITUTION: The touch roller 219 is freely turnably supported by a supporting shaft 226 of a roller holder 215 in such a manner that the axial line is inclined at an inclined angle θ1 in the breadthwise direction of the magnetic tape 4. Consequently, when the magnetic tape 4 to be wound around a reel 3 of the supply side is brought into press contact with the touch roller 219, the tape 4 is imparted with a press-contact force in the direction of the arrow, and wound up on the side of lower flange 3D. Thus, by bring the magnetic tape 4 into press contact with the touch roller 219, the tape edges of magnetic tape 4 are put aside the lower flange 3D, then the tape 4 is wound around the outer peripheral part of a reel hub 3C. Besides, the inclined angle θ1 in the direction of an azimuth angle of the touch roller 219 is defined as about one degree.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic tape aligning method for a tape cassette used for aligning and winding a magnetic tape for reuse, for example, for a tape cassette which is repeatedly reproduced and used in a broadcasting station or the like. Regarding a winding device.

[0002]

2. Description of the Related Art For example, in a broadcasting station or the like, a video tape cassette reproduced and used for broadcasting a program is generally judged to be reusable based on a channel condition indicated by an error rate of reproduced data and stored. To be done. The numerical value of this channel condition includes all the conditions from recording conditions to playback and detection of digital data, so the factors that depend on the performance of the video tape recorder are high, and the evaluation of the video tape itself is high. Not necessarily appropriate. Therefore, as an evaluation method, a method has been proposed in which a digital error state caused by a video tape is associated with a channel condition.

Burst errors mainly caused by scratches and dropouts on the magnetic layer of the video tape are examples of digital errors caused by the video tape. In addition, digital error is caused by dust adhering to the surface of the magnetic layer,
Dirt or wrinkles and edge damage also affect. Therefore, it is preferable that the quality evaluation of the video tape is comprehensively performed for each item described above.

In the video tape cassette, during reproduction operation, the video tape is unwound from the supply side reel and wound around the winding side reel. Therefore, the video tape cassette that has been recycled is used while rewinding the video tape so that it can be reused after the quality evaluation of the video tape described above. On the other hand, the recycled video tape cassette is mounted on the tape winding device and the rewinding operation of the video tape is performed. During this rewinding operation, dust, dirt or magnetic powder adhering to the surface of the magnetic layer is removed. Cleaning is performed. The magnetic tape cleaning device is generally arranged at a position immediately before the video tape pulled out from the take-up reel is pulled into the supply-side reel.

Further, the tape winding device is provided with a magnetic tape winding device for winding the video tape in good condition on the supply reel. This magnetic tape wrapping device applies pressure contact force to a video tape when the video tape is wound, thereby causing edge damage due to a step winding (jumping out) phenomenon, or entraining air between superposed video tapes. Prevent wrinkles from occurring. Similar to the magnetic tape cleaning device, the magnetic tape winding device is also disposed at a position immediately before the video tape drawn from the take-up reel is drawn into the supply reel.

A conventional magnetic tape winding device for a tape cassette includes a touch roller for applying a pressure contact force to a video tape, a roller arm member rotatably supporting the touch roller at one end, and a roller arm. And a roller arm support member that slidably supports the member. This tape cassette magnetic tape winding device is
The touch roller is pressed against the video tape by moving the roller arm member with respect to the video tape wound on the tape reel.

[0007]

The conventional magnetic tape winding apparatus for tape cassettes, for example, is 100 times faster than the running speed at the time of recording / reproducing in order to perform the winding of the video tape in a short time. Take up the videotape at a high speed like. At this time, the running speed of the video tape is
For example, in the case of broadcasting digital video tape cassettes such as D-2 digital video tape cassettes, the speed is approximately 13 m / sec.
will reach s. Therefore, there is a problem in that a boundary layer of air (so-called air film) is generated between the video tapes wound around the supply-side reel and superposed on each other.

Further, when the video tape to be wound around is wound many times repeatedly and the shape of the tape is changed due to the environment of use, the video tape is bent or stretched to take up tension. It cannot be straightened by and is wound up on the supply side reel. For this reason,
An air film is generated between the wound video tapes, and the friction coefficient between the video tapes decreases to 0.1 or less.

A video tape which is wound due to curving or one-sided extension has a force (direction normal) passing through the center of rotation of the supply-side reel, which is generated by a winding tension, and a friction coefficient between the video tapes. By the frictional force obtained from the integration of the above, the movement of shifting in the tape width direction immediately after being wound is suppressed.

However, the wound video tape has uneven tape edges due to insufficient frictional force as described above, and in the worst case, a step is formed between the flanges, resulting in tape damage. There was a problem that caused.

Therefore, as a measure for preventing tape damage, the frictional force is increased, the winding tension is increased to increase the force in the normal direction, the friction coefficient of the video tape itself is increased, and the curve is bent. It is necessary to regulate the winding by reducing the occurrence of unilateral elongation and unilateral stretching.

However, increasing the winding tension is not preferable because it adversely affects the magnetic head for recording / reproducing data on the video tape recorder. Further, increasing the friction coefficient of the video tape itself deteriorates the surface property of the tape, so that the C / N ratio is lowered and it becomes impossible to secure good recording / reproducing characteristics.

Further, in the video tape cassette, a draft is formed on the reel hub of the tape reel. For this reason, the video tape to be wound is strongly pressed by the touch roller on one tape edge side as compared to the other tape edge side. Therefore, the video tape has a problem that edge damage occurs on the tape edge side facing the lower flange side.

Therefore, according to the present invention, by appropriately suppressing the air film generated between the wound magnetic tapes, the magnetic tapes of the tape cassette can be satisfactorily wound. The purpose is to provide a device.

[0015]

In order to achieve the above-mentioned object, a magnetic tape winding apparatus for a tape cassette according to the present invention is arranged so as to face a running path of a magnetic tape pulled out from the tape cassette, and In a magnetic tape wrapping device that winds a tape in a condition that it is wound around the outer circumference of a tape reel, it is pressed against the magnetic tape in the width direction to apply a constant pressure contact force to the outer circumference of the tape reel. And a roller arm member that rotatably supports the touch roller at one end and exposes the touch roller to the inside of the tape cassette.
A roller arm supporting member that slidably supports the roller arm member so that the touch roller moves in the diametrical direction with respect to the tape reel, a base on which the roller arm supporting member is assembled, and a roller arm member. And a roller arm drive mechanism that slides along the support member. The touch roller is supported by the roller arm member with its axis inclined with respect to the width direction of the magnetic tape.

Also, in the magnetic tape winding apparatus for a tape cassette according to the present invention, the touch roller is supported by the roller arm member with its axis inclined so that the touch roller is parallel to the outer peripheral portion of the reel hub having a draft. It

Further, in the magnetic tape winding apparatus for a tape cassette according to the present invention, the touch roller has a roller arm member having an axis inclined with respect to the width direction of the magnetic tape and a draft. The axis is tilted and supported so as to be parallel to the outer peripheral portion of the reel hub.

Further, in the magnetic tape winding device for the tape cassette according to the present invention, the roller arm member is provided with the elastic support member for elastically displacing the touch roller.

[0019]

In the magnetic tape winding apparatus of the tape cassette according to the present invention having the above-described structure, the touch roller is pressed against the magnetic tape while the axis of the touch roller is inclined with respect to the width direction of the magnetic tape. It For this reason, the magnetic tape pressed against the touch roller is wound by the tension of the magnetic tape so that the tape edge is brought close to one of the flange plates constituting the tape reel.

Further, in the magnetic tape winding device of the tape cassette according to the present invention, the magnetic tape is touched while the axis of the touch roller is inclined so as to be parallel to the outer peripheral portion of the reel hub having the draft. The roller is pressed. Therefore, the magnetic tape pressed against this touch roller is
The pressure contact force is evenly applied to the tape edges on both sides.

Further, in the magnetic tape winding device for a tape cassette according to the present invention, the elastic supporting member is elastically displaced according to the pressure contact force of the touch roller pressed against the magnetic tape. Therefore, the touch roller follows changes in the winding diameter of the magnetic tape wound on the tape reel, vibration of the magnetic tape, and the like due to elastic displacement of the elastic support member.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described below with reference to FIGS. 1 to 25 of a magnetic tape winding device 101 for a tape cassette used in a tape evaluation device 100. The tape evaluation apparatus 100 is, for example, a used video tape cassette 1 that has been broadcast as a program at a broadcasting station or the like.
Is a device for rewinding the magnetic tape 4 wound around the take-up reel 2 to the supply-side reel 3 in order to make it reusable, and evaluating whether or not it can be reused.
The video tape cassette 1 is the tape evaluation device 100.
Whether or not it can be reused is determined by, and if it is determined to be usable, it is stored as it is, and if it is determined to be unusable, it is disposed of such as discarded.

As is well known, the video tape cassette 1 has a supply reel 3 and a take-up reel 2 rotatably provided inside a cassette body, and a magnetic tape wound around the peripheral surface of the supply reel 3. The tape 4 is guided along the inner surface of a lid 5 rotatably assembled to the front surface of the cassette body and wound around the peripheral surface of the take-up reel 2.

The video tape cassette 1 has a loading space 6 located inwardly of the lid 5 and having a substantially convex shape. Therefore, the video tape cassette 1
When mounted on the recording / reproducing apparatus, the loading mechanism on the side of the apparatus enters the loading space 6 to move the magnetic tape 4 outward with the lid 5 pivoting to open the front surface of the cassette body. Pulling out and a predetermined loading operation are performed.

In the video tape cassette 1, when a recording / reproducing operation is performed, the magnetic tape 4 is unwound from the supply side reel 3 and the information signal recorded on the magnetic tape 4 is reproduced or the information signal is recorded on the magnetic tape 4. Is performed in the recording / reproducing mechanism unit, and then sequentially wound on the winding side reel 2. Therefore, in the video tape cassette 1, the magnetic tape 4 is wound around the winding side reel 2 in the state where the recording and reproducing operations are performed.

By the way, broadcasting digital video tape cassettes such as the D-1 digital video tape cassette and the D-2 digital video tape cassette, which are provided with the magnetic tape 4 having the width dimension of 19.01 mm, are recorded in the cassette body depending on the recording time. There are S cassettes, M cassettes, and L cassettes that have different external shapes. In each of these digital video tape cassettes for broadcasting, the cassette body has a thickness of 33 m.
m has the same specifications, but in the M cassette 1A, the length dimension in the longitudinal direction is 254 mm, the length dimension in the front-rear direction is 150 mm, and in the L cassette 1B, the length dimension in the longitudinal direction is The length dimension in the front-back direction is 366 mm and 206 mm.

Therefore, the M cassette 1A and the L cassette 1B are configured such that the supply reel 3 (3A, 3B) and the take-up reel 2 (2A, 2B) have different intervals and different positions. There is. In the example tape evaluation apparatus 100, it is necessary to configure the S cassette winding mechanism differently, and the demand is slightly small. Therefore, the tape evaluation device 100
When the S cassette is loaded in the cassette loading unit 11, it is automatically ejected by the output of the identification sensor.

The tape evaluation apparatus 100 roughly comprises a cassette loading section 11 into which the video tape cassette 1 is loaded, and a loading section which pulls out the magnetic tape 4 from the video tape cassette 1 loaded in the tape cassette loading section to form a running path. A device 50, a magnetic tape cleaning device 40 for removing dust and the like adhering to the magnetic tape 4, and a magnetic tape detection device 45 for detecting a deteriorated state of the magnetic tape 4.
And a magnetic tape winding device 101 of a tape cassette that arranges and winds the magnetic tape 4 on the supply side reel 3.

The tape evaluation apparatus 100 includes a magnetic tape cleaning device 40, a magnetic tape detection device 45, and a magnetic tape winding device 101 for a tape cassette along the reel 2 on the take-up side and the reel 3 on the supply side in the running path of the magnetic tape.
Are arranged in this order.

The cassette loading section 11 has a space for mounting two types of video tape cassettes 1A and 1B having different external specifications as described above, and the supply side reel 3 and the winding side reel are provided on the bottom surface. Reel shafts 20A and 20B are provided which are fitted in the reel holes of the two and drive the supply-side reel 3 and the winding-side reel 2 to rotate. Further, the cassette loading unit 11 is provided with a lid opening mechanism whose details are omitted. When the video tape cassette 1 is loaded, the lid 5 on the front surface is rotated to be positioned on the inner surface side of the lid 5. The magnetic tape 4 is exposed to the outside.

The reel shafts 20A and 20B are adjusted to predetermined positions by a reel shaft adjusting mechanism 21 whose details are omitted depending on the type of the video tape cassette 1 loaded in the cassette loading section 11, and the video tape cassette 1 Are fitted into the reel holes of the supply side reel 3 and the winding side reel 2, respectively. Further, the reel shafts 20A and 20B are
The tape is driven by a tape drive mechanism (not shown) in the counterclockwise direction to rotate the supply reel 3 and the take-up reel 2 and rewind the so-called magnetic tape 4 that is wound around the take-up reel 2. I do. Therefore, the reel shafts 20A and 20B form a drive mechanism of the magnetic tape 4.

The magnetic tape 4 is pulled out from the inside of the video tape cassette 1 toward the mechanical section by the loading device 50 to form a running path of the magnetic tape 4. The loading device 50 has the same basic structure as a loading device provided in a known video tape recorder, and as shown in FIG.
1, a first drive mechanism section 52 driven by the loading motor 51, and a first drive mechanism section 52.
And a second drive mechanism portion 54 driven by the ring gear portion 53.
And the first driven by the second drive mechanism section 54.
Of the first tension arm drive mechanism 55 and the second tension arm drive mechanism 56, and the first tension arm 57 rotated by the first tension arm drive mechanism 55 and the second tension arm drive mechanism 56. And a second tension arm 58.

In the loading device 50, when the loading motor 51 is driven, the ring gear portion 53 is rotationally driven via the first drive mechanism portion 52. The ring gear portion 53 is composed of a first ring gear and a second ring gear that are overlapped with each other, and the first ring gear and the second ring gear are rotationally driven to generate a second drive mechanism. The part 54 is rotationally driven.

The second drive mechanism section 54 is rotated to drive the first tension arm drive mechanism section 55 and the second tension arm drive mechanism section 56, respectively. Then, the first tension arm drive mechanism portion 55 and the second tension arm drive mechanism portion 56.
Is rotationally driven to rotationally move each of the first tension arm 57 and the second tension arm 58 laterally to pull the magnetic tape 4 pulled out from the video tape cassette 1 laterally. Magnetic tape 4
A predetermined tension is applied to the inside of the traveling route.

The magnetic tape cleaning device 40 generally includes a second tension arm 58 and a pinch roller 49 for pulling out the magnetic tape 4 from the take-up reel 2 which is the feeding side of the magnetic tape 4 constituting the loading device 50 described above. And a suction guide portion arranged between the pinch roller 49 and the first tension arm 57 for pulling out the magnetic tape 4 from the supply reel 3 on the winding side. Has been done. The magnetic tape cleaning device 40 removes dust and magnetic powder adhering to the surface of the magnetic tape 4 by using air or a sapphire blade, and sucks the removed dust and the like to the outside of the device.

The magnetic tape winding device 101 of the tape cassette is located on the inner peripheral side of the running path of the magnetic tape 4 pulled out from the video tape cassette 1, and the supply side reel 3 and the winding side reel 2 are provided. Are arranged corresponding to the substantially central part of the.

The magnetic tape winding apparatus 101 of the embodiment tape cassette is roughly composed of a roller arm section 108 having a roller arm 214 and a roller arm moving mechanism section 107 for moving the roller arm 214 with respect to the supply reel 3.
And a slide movement mechanism section 10 for moving the roller arm movement mechanism section 107 into and out of contact with the video tape cassette 1.
6 and an up-and-down moving mechanism section 105 arranged on the inner peripheral side of the running path of the magnetic tape 4 to move the slide moving mechanism section 106 up and down with respect to the running path of the magnetic tape 4 of the video tape cassette 1. Composed.

First, the vertical movement mechanism 105 will be described below with reference to FIGS. Vertical movement mechanism unit 1
Reference numeral 05 indicates a support base 116 that is attached to a chassis member of the tape evaluation apparatus 100 (not shown), a vertical movement mechanism 110 provided on the support base 116, and a vertical movement mechanism 110 that moves the raised and lowered positions. Vertical moving base 133 and vertical moving base 1
It is composed of a first screw guide shaft 125, a second screw guide shaft 126, and a guide shaft 129 that support 33 to be vertically movable.

The support base 116 is formed in a substantially rectangular plate shape, and both ends thereof are respectively screwed to the rising side walls of the chassis member of the tape evaluation apparatus 100. The support base 116 includes a vertical movement mechanism 110 on the main surface.
Is provided.

The vertical movement mechanism 110 is roughly composed of a vertical movement motor 111, a worm gear 115 rotatably driven by the vertical movement motor 111, a worm wheel 120 meshed with the worm gear 115, and the worm wheel 120. Drive shaft 122 provided with
And a timing belt 123 wound around the drive shaft 122, and a first screw guide shaft 125 and a second screw guide shaft 126 around which the timing belt 123 is wound.

The vertical moving motor 111 is the support base 1
The first connecting member 112 is provided on the motor support portion 116A at one end of the first and second motor 16, and the rotary shaft 111A of the vertical movement motor 111 is provided. The second connecting member 113 is fitted and connected to the first connecting member 112. The second connecting member 113 is provided with a rotating shaft 114 whose axis lines are aligned with the rotating shaft 111A of the vertically moving motor 111.

The rotary shaft 114 is provided with a worm gear 115 in the middle thereof, and one end thereof is rotatably supported by the bearing 119. The bearing 119 is disposed on the rotary shaft support portion 116 </ b> B provided on the support base 116, and is covered by the bearing support member 117. Both ends of the bearing support member 117 are fixed to the bearing support portion 116B by mounting screws 118A and 118B.

The worm gear 115 is formed by meshing a worm wheel 120 with a gear provided on the outer peripheral portion. The worm wheel 120 is provided in the middle of the drive shaft 122. The drive shaft 122 is a bearing 121.
It is rotatably supported by A and 121B, and these bearings 121A and 121B are fixed to the support base 116.

A pulley 124 is provided at the upper end of the drive shaft 122, and a timing belt 123 is stretched around a groove formed in the pulley 124. The timing belt 123 is used for the first screw guide shaft 12
5 and the second screw guide shaft 126, and the pulleys 127 and 128 provided on the upper ends of the respective screw guide shafts 126 are respectively stretched.

The guide shaft 1 is attached to the support base 116.
The upper end of 29 is screwed and fixed by mounting screws 136A and 136B. Furthermore, the vertical movement base 13
3 has a guide member 1 at a position corresponding to the guide shaft 129.
30 is provided, and is slidably inserted into the guide hole 130A of the guide member 130. Therefore, the vertical movement base 133 is slidably supported by the guide shaft 129.

The first screw guide shaft 125 and the second screw guide shaft 125
The screw guide shaft 126 is rotatably supported by bearings 131A and 131B provided on the support base 116. The second screw guide shaft 126 is
The lower end is rotatably supported by the bearing 131C. As shown in FIG. 6, the bearing 131C is arranged on the outer peripheral side of the running path of the magnetic tape 4, and the mounting screw 13
It is fixed to the base plate 109 by screws 7A and 137B.

Also, these first screw guide shafts 1
25 and the second screw guide shaft 126 are provided with thread grooves 125A and 126A, respectively, on their outer peripheral portions, and the first guide nut 134 and the second guide nut 135 are respectively provided in these thread grooves 125A and 126A. It is screwed.

The first guide nut 134 and the second guide nut 134
The guide nut 135 of is, as shown in FIG. 7 and FIG.
Nut bodies 134A and 135A, and nut body 134
A, a coil spring 155 provided on the outer peripheral portion of 135A
A first nut support member 156A for supporting the nut bodies 134A, 135A on the first screw guide shaft 125 and the second screw guide shaft 126, and a second nut support member 156A for supporting the nut bodies 134A, 135A on the vertical movement base 133. And a nut support member 156B.

One end of the coil spring 155 is in contact with the first nut support member 156A, and the other end is in contact with the vertical movement base 133. Therefore, the nut bodies 134A and 135A of the first guide nut 134 and the second guide nut 135 are swingably supported by the vertically moving base 133 in a state of floating above the vertically moving base 133 (so-called floating structure). Has been done.

The first screw guide shaft 125 and the second screw guide shaft 126 are screwed into the first screw guide shaft 125 and the first screw guide shaft 126.
The guide nut 134 and the second guide nut 135 are provided with a plurality of gaps with the first screw guide shaft 125 and the second screw guide shaft 126, respectively.

That is, the vertical moving base 133 is slidably movable on the first screw guide shaft 125 and the second screw guide shaft 126.
Then, as the first screw guide shaft 126 and the second screw guide shaft 127 are rotationally driven, respectively, the vertical movement base 133 is moved up and down through the first guide nut 134 and the second guide nut 135. Slide to position and to.

The vertical moving base 133 has the first positioning shaft 141 to the fourth positioning shaft 14 on the main surface facing the base plate 109 of the tape evaluation apparatus 100.
4 are provided, and the upper ends of the first positioning shaft 141 to the fourth positioning shaft 144 are fixed.

The first to third positioning shafts 141 to 143 have positioning holes 141A and 142 at their lower ends.
A and 143A are provided respectively. Further, the base plate 109 is provided with a first positioning member 145 to a third positioning member 147 at positions corresponding to the first positioning shaft 141 to the third positioning shaft 143, respectively. The first positioning member 145 to the third positioning member 147 are integrally provided with the first positioning protrusion 145A to the third positioning protrusion 147A, respectively.

That is, the vertically moving base 133 is located at the lowered position approaching the base plate 109 and is inserted into the first positioning hole 141A to the third positioning hole 143A of the first positioning shaft 141 to the third positioning shaft 143. ,
First positioning member 145 to third positioning member 14
The first to third positioning protrusions 145A to 147A of the seventh positioning protrusion 145A are respectively inserted to be positioned.

Further, the vertical moving base 133 is brought into contact with an abutting surface portion (not shown) provided on the base plate 109 at a lower position where the vertical moving base 133 approaches the base plate 109.

Further, a motor stop member 139 having a substantially L-shaped cross section is provided on the outer peripheral portion of the vertical movement base 133, and a tip end thereof is projected toward the base plate 109 side to attach the screw 140.
It is fixed by screws. Base plate 10
9, a descending position sensor (not shown) is arranged at a predetermined position corresponding to the motor stopping member 139, and the sensor portion provided in this descending position sensor is connected to the motor stopping member 139.
The rotation of the vertical movement motor 111 is stopped by blocking the.

The vertical movement base 133 has a roller arm portion 10 on the side facing the base plate 109.
A slide base 149 provided with 8 is slidably provided.

As described above, the vertical movement mechanism section 105
The vertical movement base 133 is supported by the first screw guide shaft 125 and the second screw guide shaft 126 in a floating structure via the first guide nut 134 and the second guide nut 135.

Therefore, in the vertical movement mechanism unit 105, for example, even when the first screw guide shaft 125 and the second screw guide shaft 126 are assembled, even if there is some deviation in the parallelism between the shafts, Because of the floating structure described above, it is possible to automatically correct the variation in the axial distance between the first screw guide shaft 125 and the second screw guide shaft 126. That is, the up-and-down movement base 133 is surely moved to the ascending position and the descending position.

Further, the vertical movement mechanism section 105 reduces the movement loss and the positional deviation due to the movement of the vertical movement base 133, and also includes the first screw guide shaft 125 and the second screw guide shaft 126, and the first screw guide shaft 125. The wear of the threaded portions of the guide nut 134 and the second guide nut 135 is reduced.

Next, as shown in FIG. 9 to FIG.
8 is disposed, a slide movement mechanism 160 provided on the vertical movement base 133 to slide the slide base 149 with respect to the video tape cassette 1, and a slide base 149 that is slid.
Position holding member 167 and second position holding member 167 for fixing the position of
Position holding member 168.

The slide base 149 is superposed on the vertically moving base 133, and the roller arm portion 108 is provided on the main surface thereof. The slide base 149 has
The first guide shaft 1 is provided on the sliding surface side with the vertically moving base 133.
63 and a second guide shaft 164 are provided respectively.

By the way, the vertical moving base 133 is provided with a first guide slit 161 and a second guide slit 162 on the main surface thereof. The first guide shaft 163 and the second guide shaft 164 of the slide base 149 are inserted into the first guide slit 161 and the second guide slit 162 of the vertical movement base 133, respectively. That is, the slide base 14
9 is slidably supported on a vertically moving base 133.

The slide movement mechanism 160 is provided on the vertical movement base 133 and will be described with reference to FIGS. 9 to 11. The slide movement mechanism 160 is roughly composed of a slide movement motor 153 and the slide movement motor 15
3, a drive shaft 150 connected to the drive shaft 150, a first gear 171 provided on the drive shaft 150, a second gear 172 meshed with the first gear 171, and a second gear 1
72, a moving pulley 174 provided via a mounting shaft 173, and a first wire member 175A and a second wire member 175 sandwiching the moving pulley 174.
It is composed of B and.

The motor 153 for sliding movement is arranged on the base plate 109 facing the slide base 149. The sliding movement motor 153 is provided with a connecting member 152 at the tip of the rotary shaft 153A. The connecting member 152 is provided with a substantially cross-shaped connecting groove.

The drive shaft 150 is provided with a connecting pin 151 inserted through a mounting hole 150A formed at the lower end thereof. The drive shaft 150 is connected to the slide movement motor 153 by the connection pin 151 provided at the lower end engaging with the connection groove of the connection member 152 provided on the slide movement motor 153.

The first gear 171 is provided on the upper end portion of the drive shaft 150, and the second gear 172 meshed with the first gear 171 is provided.

The second gear 172 is rotatably supported by a support shaft 176. A substantially C-shaped opening 172A is provided on the main surface of the second gear 172, and a circular arc-shaped first detection protrusion 172B and a second detection protrusion 172B are provided at the side ends of the opening 172A. The detection protrusions 172C are integrally formed in parallel with the main surface.

The second gear 172 has an opening 17
A sensor support member 177 for closing 2A is fixedly provided on the support shaft 176. The sensor support member 177 is provided with a first position sensor 178A and a second position sensor 178B at predetermined positions on the surface of the second gear 172 facing the opening 172A.

These first position sensor 178A and second position sensor
The position sensor 178B of the second gear 172 is provided with detection grooves corresponding to the first detection protrusion 172B and the second detection protrusion 172C of the second gear 172, respectively, and is slid by a connection wiring (not shown). It is connected to the motor 153.

Further, the second gear 172 is provided with a mounting shaft 173 projecting from the outer peripheral edge on the side of the surface facing the vertically moving base 133.
Is provided with a moving pulley 174. The moving pulley 174 has a groove recessed along the outer periphery thereof, and the elastically deformable first wire member 175A and the second wire member 17 sandwiching the moving pulley 174.
5B are provided in parallel with each other. These first wire member 175A and second wire member 175B
Both ends are supported by a first position holding member 167 and a second position holding member 168 described later.

The slide moving mechanism 160 is covered with a case member 179. This case member 1
79 has a mounting screw 18 at the end of the vertical movement base 133.
They are fixed by screws 0A, 180B and 180C, respectively.

A first guide shaft 163 and a second guide shaft 164 are erected on the slide base 149,
These guide shafts 163, 164 have a first pulley 16
5 and a second pulley 166 are provided respectively.
A first position holding member 167 and a second position holding member 168 are provided on the first pulley 165 and the second pulley 166, respectively.

The first position holding member 167 and the second position holding member 167
The position holding member 168 is formed in a substantially T-shape using, for example, a plastic material, and has a first pressing member 169A to a third pressing member 169C and a fourth pressing member 169D to a sixth pressing member at each end. Pressure contact members 169F are provided respectively.

As shown in FIG. 12, the first pressure contact member 169A through the sixth pressure contact member 169F have a main body portion 16a.
9L and the coil spring 1 housed in the main body 169L
69M and a steel ball 169N provided at one end of the coil spring 169M.

The main body portion 169L is formed in a substantially bottomed cylindrical shape having an opening 169P, and the coil spring 169M is housed in the opening 169P. Coil spring 169M
Is provided with one end abutting on the bottom surface of the opening. The steel ball 169N is housed in the opening by abutting one end of the coil spring 169M on the opening end side of the main body 169L.

Therefore, in the first pressure contact member 169A to the sixth pressure contact member 169F, the steel balls 169N are brought into contact with the main surface of the vertically moving base 133 and pushed into the opening side. The first pressure contact member 169A to the sixth pressure contact member 169F are loaded with elastic force due to elastic deformation of the coil spring 169M when the steel ball 169N is pushed. Therefore, the vertical movement base 133
Are the first pressure contact member 169A through the sixth pressure contact member 169.
Each steel ball 169N of F receives a pressure contact force.

That is, the up-and-down moving base 133 has the first
Since the pressure contact members 169A to 169F receive the pressure contact force, it is possible to reliably prevent the formation of an air layer on the sliding surface with the slide base 149. Therefore, the slide base 149 is the vertical movement base 13
Good slide movement is ensured for No. 3.

As described above, the slide movement mechanism section 10
6 is a slide moved by providing a first wire member 175A and a second wire member 175B whose both ends are supported by the first position holding member 167 and the second position holding member 168, respectively. Base 14
The elastic forces of the first wire member 175A and the second wire member 175B are applied to the wire 9.

Therefore, the slide moving mechanism 106 is
First wire member 175A and second wire member 175
By the elastic force of B, the slide base 149 that has been slid can be securely fixed.

The roller arm moving mechanism 107 is shown in FIG.
15, the slide base 149 is generally shown.
And a circuit board 202 for controlling the roller arm moving mechanism 192, and an overload sensor 194 connected to the circuit board 202.

The roller arm moving mechanism 192 is roughly composed of a roller arm moving motor 182, a drive shaft 185 connected to the rotary shaft 182A of the roller arm moving motor 182, and a worm gear 187 provided on the drive shaft 185. A first gear 196 meshed with the worm gear 187, and a supporting shaft 195 of the first gear 196.
The second gear 197 provided on the
7, a third gear 199 meshed with the third gear 199, and a fourth gear 200 provided on a support shaft 198 of the third gear 199.
And a gear portion 201 provided on the roller arm 214 and meshed with the fourth gear 200.

The roller arm moving motor 182 has a mounting screw 190 attached to a mechanism supporting member 190 which is screwed and fixed to the slide base 149 by a mounting screw 191A.
It is fixed by screws B and 190C. The roller arm moving motor 182 is provided with a first connecting member 183 at the tip of the rotary shaft 182A.

The first connecting member 183 is connected to the second connecting member 184, and is connected to one end of the drive shaft 185 via the second connecting member 184. The drive shaft 185 is provided with a worm gear 187 on the other end side, and the other end is rotatably supported by a drive shaft support portion 190A provided on the mechanism support member 190.

The worm gear 187 is the first gear 196.
Has been meshed with. The first gear 196 includes a first support shaft 195 rotatably supported by the slide base 149.
A second gear 197 is provided at the tip of this first support shaft 195.

The second gear 197 meshes with the third gear 199. The third gear 199 is provided at the tip of the second support shaft 198 rotatably supported by the slide base 149, and the fourth gear 200 is provided in the middle of the second support shaft 198. Has been.

By the way, a roller arm portion 108 described later is provided.
The roller arm 214 included in is provided with a gear portion 201 along one side surface portion.
Gear 200 is meshed. Further, the roller arm 214 is provided with a retaining plate 204 that prevents the roller arm 214 from falling off when it is slid to the base end portion.

The circuit board 202 is a slide base 149.
Is fixed to the outer peripheral portion of the device by mounting screws 203A and 203B. The circuit board 202 is connected to the overload sensor 194 by connection wiring, and is also connected to the roller arm moving motor 182.

The base end portion of the overload sensor 194 is screwed and fixed to the slide base 149, and a detection slit is provided at the tip end portion. And the drive shaft 185
Is provided with an overload detection member 189 at a position corresponding to the overload sensor 194.

The overload detection member 189 is formed in a substantially cylindrical shape with a bottom, and is slidably supported by the drive shaft 185 in a state where the outer peripheral portion corresponds to the detection slit of the overload sensor 194. Further, the drive shaft 185 is provided with a coil spring 186 between the second connecting member 184 and the overload detection member 189, and both ends of the coil spring 186 have the second connecting member 184 and the overload detection member. 18
9 are in contact with each other.

Therefore, the overload detection member 189 has
Since the second connecting member 184 is fixed to the drive shaft 185, it is retracted from the detection slit of the overload sensor 194 by the elastic force of the coil spring 186. Then, the overload detection member 189 is the first when the pressure contact force of the roller arm 214 pressed against the magnetic tape 4 is overloaded.
The worm gear 187 is slidably moved through the gears 196 to 200 of the worm gear 187.
7 slides to the overload sensor 194 side.

The overload detection member 189 is slid so that the outer peripheral portion is inserted into the detection slit of the overload sensor 194. Therefore, the overload sensor 194
Detects an overload generated on the roller arm 214 and immediately stops the rotational driving of the roller arm moving motor 182.

As described above, the roller arm moving mechanism portion 107 has the gear portion 20 on one side surface portion of the roller arm 214.
1 is provided, the roller arm 214
It is possible to accurately adjust the movement amount of the. For this reason, the roller arm moving mechanism section 107 is
The roller arm 214 is moved with high accuracy in accordance with the amount of change in the winding diameter of the magnetic tape 4 wound up on. Therefore,
The roller arm 214 is constantly pressed against the magnetic tape 4 wound around the supply reel 3 of the video tape cassette 1 with a constant pressing force.

The roller arm moving mechanism 107 is
Since the overload sensor 194 and the overload detection member 189 are provided, when the roller arm 214 pressed against the supply reel 3 is overloaded, the rotation driving of the roller arm moving motor 182 is immediately stopped. To do. For this reason, the roller arm moving mechanism 107 reliably prevents the magnetic tape 4 from being damaged by an overload generated on the roller arm 214 to which the magnetic tape 4 is pressed.

Therefore, the roller arm moving mechanism 10
7 reliably removes the air layer generated between the magnetic tapes 4 wound on the supply-side reel 3 and reliably prevents the magnetic tapes 4 from being damaged by the pressure contact force of the roller arm 214. .

The roller arm portion 108 is shown in FIGS.
9, the roller arm supporting member 205 provided on the slide base 149 and the first bearing 213 respectively provided on the roller arm supporting member 205 are roughly shown.
A to eighth bearings 213H and these first bearings 213
A roller arm 214 slidably supported by the A to eighth bearings 213H is provided.

As shown in FIGS. 20 and 21, the roller arm portion 108 includes an elastic supporting member 188 provided at one end of the roller arm 214 and the elastic supporting member 1.
First pressure contact force detection sensor 19 provided on each 88.
3A and the second pressure contact force detection sensor 193B, the roller holder 215 supported by the elastic support member 188, and the touch roller 21 rotatably supported by the roller holder 215.
9 and 9.

The roller arm support member 205 includes a first roller arm support member 205A located on the inner peripheral side of the roller arm 214 and disposed on the slide base 149.
The second roller arm support member 20 which is located on the outer peripheral side of the roller arm 214 and is disposed on the slide base 149.
5B.

The first roller arm support member 205A is
The slide base 149 has a substantially U-shaped cross section.
The bottom portion is fixed by screws with a mounting screw 208. Further, the first roller arm support member 205A is provided with a position adjusting slit 222 on the bottom surface thereof, and the slide base 1 is provided in the position adjusting slit 222.
The guide pin 223 erected at 49 is inserted.

Then, the first roller arm support member 20
5A is provided with inclined portions 220A and 220B which are orthogonal to each other on a surface portion which faces a roller arm 214 described later. The first roller arm support member 205A has a first bearing mounting hole 211A and a second bearing mounting hole 211B formed at one end of each of the inclined portions 220A and 220B so that their axes are orthogonal to each other. There is.

Further, the first roller arm support member 205
A has a third bearing mounting hole 211C and a fourth bearing mounting hole 211D at the other end of the inclined portions 220A and 220B.
However, the respective axes are formed so as to be orthogonal to each other.

The first bearing mounting hole 211A and the third bearing mounting hole 211C described above are provided on the inclined portion 220A of the first roller arm supporting member 205A and on the roller arm 21.
4 are located on the circumference centered on the center of curvature R of each of the four. Further, the second bearing mounting hole 211B and the fourth bearing mounting hole 211D described above are provided on the inclined portion 220B of the first roller arm support member 205A and on the circumference around the center R of curvature of the roller arm 214. They are located and drilled respectively.

The first roller arm support member 205A is provided with first bearing support shafts 212A to 212D in first bearing mounting holes 211A to fourth bearing mounting holes 211D, respectively. ing. And these 1st bearing support shaft 212A thru | or 4th bearing support shaft 212D
Includes the first washer 221A to the fourth washer 22.
1D is inserted therethrough, and the first bearing 213
A to fourth bearings 213D are rotatably supported.

The second roller arm support member 205B is
It is provided on the slide base 149 via an elastically deformable pressure contact member 207 having an L-shaped cross section. The second roller arm support member 205B is screwed and fixed to one end of the press contact member 207 by mounting screws 209A and 209B, and the other end of the press contact member 207 is screwed to the slide base 149 by mounting screws 210A and 210B. It is fixed and fixed.

Then, the second roller arm support member 20
5B is provided with inclined portions 206A and 206B which are orthogonal to each other on a surface portion which faces a roller arm 214 described later. The second roller arm support member 205B is provided with a fifth bearing mounting hole 211E and a sixth bearing mounting hole 211F at one end of each of the inclined portions 206A and 206B, with their axes orthogonal to each other. There is.

In addition, the second roller arm support member 205
B has a seventh bearing mounting hole 211G and an eighth bearing mounting hole 211H at the other end of the inclined portions 206A and 206B.
However, the respective axes are formed so as to be orthogonal to each other.

The fifth bearing mounting hole 211E and the seventh bearing mounting hole 211G described above are provided on the inclined portion 206A of the second roller arm supporting member 205G and on the roller arm 21.
4 are located on the circumference centered on the center of curvature R of each of the four. Further, the sixth bearing mounting hole 211F and the eighth bearing mounting hole 211H described above are provided on the inclined portion 206B of the second roller arm supporting member 205B and on the circumference around the center R of curvature of the roller arm 214. They are located and drilled respectively.

The second roller arm support member 205B is provided with fifth bearing supporting shafts 212E to 212H in fifth bearing mounting holes 211E to eighth bearing mounting holes 211H, respectively. ing. Then, the fifth bearing support shaft 212E to the eighth bearing support shaft 212H
Includes the fifth washer 221E through the eighth washer 22.
1H are respectively inserted, and the fifth bearing 213
E to eighth bearings 213H are rotatably supported.

The pressure contact member 207 for supporting the second roller arm support member 205B is provided with a position adjusting slit 224 on the bottom surface thereof.
Guide pin 2 that is installed upright on slide base 149
25 is inserted. Then, this pressure contact member 207
Applies a pressing force that presses the second roller arm support member 205B against the roller arm 214.

As shown in FIG. 18, the roller arm 214 is formed in an arc shape centered on the center of curvature R,
A first sliding surface 214A orthogonal to each other on the inner side surface
And the second sliding surface 214B are integrally provided. Further, the roller arm 214 is integrally provided with a third sliding surface 214C and a third sliding surface 214D which are orthogonal to each other on the outer peripheral side surface portion.

The elastic support member 188 is made of, for example, phosphor bronze and has a substantially U-shaped cross section. The elastic support member 188 is provided with both ends at one end of the roller arm 214, and the roller holder 215 is supported by the folded portion having a U-shaped cross section. In addition, the roller arm 214
A cutout portion 214E is provided at one end of the elastic support member 188 so that the elastic support member 188 does not come into contact with the elastic support member 188 when elastically displaced.

A strain gauge is used for the first pressure contact force sensor 193A and the second pressure contact force sensor 193B.
The elastic support members 188 are provided on side surfaces parallel to each other. The first pressure contact force sensor 193A and the second pressure contact force sensor 193B are connected and wired to the circuit board 202, respectively.

The first pressure contact force sensor 193A and the second pressure contact force sensor 193B output respective detection signals to the circuit board 202 in accordance with the elastic displacement amount of the elastic support member 188. The circuit board 202, based on the detection signal obtained by subtracting the respective detection signals, the motor 18 for moving the roller arm of the roller arm moving mechanism 192.
The number of rotations of 2 is feedback-controlled.

Therefore, the first pressure contact force sensor 193A
The second press-contact force sensor 193B adjusts the movement amount of the roller arm 214 by controlling the rotation speed of the roller arm movement motor 182. That is, the first pressure contact force sensor 193A and the second pressure contact force sensor 19
3B is a roller arm according to the increase amount of the winding diameter of the magnetic tape 4 wound on the supply reel 3 when the roller arm 214 is pressed against the magnetic tape 4 wound on the supply reel 3. By appropriately moving 214, the pressure contact force of the roller arm 214 with respect to the magnetic tape 4 is kept constant.

The roller holder 215 is formed in a substantially h-shaped cross section, and its base end portion is provided at the folded portion of the elastic support member 188. A support shaft 226 is provided on the roller holder 215, and a touch roller 219 is rotatably supported on the support shaft 226.

As described above, the roller arm moving mechanism 107 includes the first and second pressure contact force sensors 193A, 19A.
Since the 3B and the elastic supporting member 184 are provided, the touch roller 21 pressed against the magnetic tape 4 is provided.
The pressure contact force acting on 9 can be detected at any time.

Therefore, the roller arm moving mechanism 10
Reference numeral 7 appropriately controls the movement amount of the roller arm 214 in accordance with the change amount of the winding diameter of the magnetic tape 4 wound around the supply reel 3 to press the roller arm 214 against the magnetic tape 4 at a constant pressure. It can be pressed by force.

As described above, the roller arm portion 108
With the roller arm 214 formed in an arc shape having the center of curvature R as a center, the force line of the pressure contact force applied to the magnetic tape 4 wound around the supply-side reel 3 is changed to the supply-side reel. It becomes the direction of passing the rotation center of 3. Therefore, the roller arm 214 is connected to the supply reel 3
By reducing the occurrence of inconveniences such as tightening and loosening that occur on the magnetic tape 4 that has been wound around, the winding state of the magnetic tape 4 is improved.

Further, since the roller arm 214 is formed in an arc shape, the video tape cassette 1 for pressing the magnetic tape 4 wound around the supply reel 3 under pressure.
It is possible to maximize the distance between the end side tape guide provided inside the video tape cassette 1 and the inner side tape guide when it is inserted into the inside of the Can be reduced.

Therefore, the traveling path of the magnetic tape 4 can be made small in the area pulled out by the loading device 50. Therefore, the roller arm 214
Can downsize the magnetic tape winding device 101 of the tape cassette and the tape evaluation device 100 as a whole.

As shown in FIG. 22, the touch roller 219 is made of, for example, a resin material such as rubber or urethane and has a substantially columnar shape, and is rotatably supported by a support shaft 226 provided on the roller holder 215. A support hole 219A is formed. Further, the touch roller 219 is formed with a tape press contact surface portion 219B having an arcuate cross section bulging on the outer peripheral portion.

In the touch roller 219, the diameter A1 of the central portion of the tape pressure contact surface portion 219B on the outer peripheral portion is larger than the diameter dimension A2 of both end portions thereof, and the tape pressure contact surface portion 219B of the outer peripheral portion extends from both end portions to the central portion. It is formed in an arcuate cross-section whose diameter is gradually increased.

By the way, as shown in FIGS. 24 and 25, the supply reel 3 on which the magnetic tape 4 is wound is formed integrally with the reel hub 3C for winding the magnetic tape 4 on the outer peripheral portion thereof. Disk-shaped lower flange 3
D and an upper flange 3E provided on the reel hub 3C so as to face the lower flange 3D.
Further, the supply-side reel 3 is provided with a draft in the width direction of the outer peripheral portion of the reel hub 3C in molding.

As shown in FIG. 24, the touch roller 219 has an axis of inclination angle θ ₁ with respect to the width direction of the magnetic tape 4.
(Hereinafter, referred to as an inclination angle θ ₁ in the azimuth angle direction.) It is rotatably supported by a support shaft 226 of the roller holder 215. Therefore, when the magnetic tape 4 wound around the supply-side reel 3 is pressed against the touch roller 219, the magnetic tape 4 is wound around the lower flange 3D with the habit of moving in the direction of the arrow shown in the drawing. Therefore, when the magnetic tape 4 is pressed against the touch roller 219, the tape edge is brought closer to the lower flange 3D side and is wound around the outer peripheral portion of the reel hub 3C.

In the embodiment, the touch roller 219 is used.
The inclination angle θ _{1 in} the azimuth angle direction is about 1 degree. Inclination angle θ of the touch roller 219 in the azimuth angle direction
_{If 1} is larger than 1 degree, the habit toward the lower flange 3D side becomes too large, which causes inconvenience such as tape damage on the tape edge, and if it is smaller,
Since the habit toward the lower flange 3D side is insufficient, inconveniences such as uneven tape edges occur.

[0126] Further, the touch roller 219, as shown in FIG. 25, parallel to the axis to the outer peripheral portion of the reel hub 3C the supply side reel 3 are inclined angle theta ₂ (tilt angle direction of the magnetic tape 4 is wound It is tilted by an inclination angle θ ₂ ) and is rotatably supported by a support shaft 226 of the roller holder 215.

That is, the outer peripheral portion of the touch roller 219 is pressed in substantially parallel to the draft provided on the outer peripheral portion of the reel hub 3C of the supply-side reel 3 by being inclined by the inclination angle θ ₂ in the tilt angle direction. It Therefore, the outer peripheral portion of the touch roller 219 is pressed in parallel with the magnetic tape 4 wound around the outer peripheral portion of the reel hub 3C of the supply reel 3. Therefore, in the magnetic tape 4 pressed against the touch roller 219, the pressing force is evenly applied to the tape edges on both sides.

In the embodiment, the touch roller 219 is used.
The tilt angle θ _{2 in} the tilt angle direction is about 1 degree. The inclination angle θ ₂ of the touch roller 219 in the tilt angle direction is
It is substantially parallel to or slightly larger than the inclination angle which is the draft angle provided on the outer peripheral portion of the reel hub 3C.

By the way, as shown in FIG. 21, the roller arm portion 108 is composed of a first adjusting screw 238 and a second adjusting screw 239, and the touch roller 219 is pressed against the magnetic tape 4. A tilt angle adjusting mechanism for finely adjusting the tilt angle θ _{1 in} the azimuth angle direction and the tilt angle θ ₂ in the tilt angle direction is provided.

The first adjusting screw 238 is used for the roller arm 2
The elastic support member 188 is provided at one end of the elastic member 14 via a washer 239. The second adjusting screw 239 is provided on the base end portion of the roller holder 215 via the washer 240 so as to straddle the folded portion of the elastic support member 188. Further, as shown in FIG. 21, the roller holder 215 is provided with an adjustment groove 215A at the base end portion in parallel with the support shaft 226, and the first adjustment screw 238 is provided across the adjustment groove 215A. It is provided.

Therefore, the tilt angle θ _{1 of the} touch roller 219 pressed against the magnetic tape 4 in the azimuth angle direction is θ _1.
And the tilt angle θ ₂ in the tilt angle direction is equal to the first adjustment screw 238.
Also, the roller holder 215 is adjusted and adjusted by screwing the second adjustment screw 239.

As described above, the touch roller 219 is
By forming the central portion of the tape pressure contact surface portion 219B in a bulging arcuate cross section, a pressure contact force as shown in FIG. 23 is generated. That is, when the touch roller 219 press-contacts the magnetic tape 4 wound around the supply-side reel 3, the press-contact force applied to the magnetic tape 4 gradually increases, and a sudden change in the press-contact force does not occur.

Therefore, the touch roller 219 prevents the pressure-contact mark from being generated on the magnetic tape 4 which is pressure-contacted. Further, the touch roller 219 can reliably remove the air film generated between the magnetic tapes 4 wound on the supply-side reel 3 and improve the regular winding state of the magnetic tapes 4.

As described above, the roller arm portion 108
Is a roller arm supporting member 205 that slidably supports the roller arm 214, and includes a first roller arm supporting member 205A and a second roller arm supporting member 205B.
When the roller arm 214 is divided into two parts, the roller arm 214 has a cross-sectional shape change due to dimensional tolerance and the shape of the roller arm 214 expands and contracts due to ambient temperature.
It is possible to easily correct shakes and errors that occur when the slide moves.

The roller arm portion 108 also has a pressure contact member 207 for supporting the second roller arm support member 205B.
Is provided, the press contact member 207 applies a press contact force to the second roller arm support member 205B. That is, the pressure contact member 207 applies a predetermined pressure contact force in a direction orthogonal to the longitudinal direction of the roller arm 214 to support the roller bearing 214, and thus the first bearing 213A.
Since the pressure contact force is applied to the eighth bearing 213H in advance, the stability of the moving operation of the roller arm 214 is improved. Therefore, the roller arm unit 108 does not need to use a highly accurate bearing, which reduces the manufacturing cost.

In the magnetic tape winding device 101 of the tape cassette constructed as described above, the vertical moving mechanism 1
05, the slide movement mechanism unit 106, and the roller arm movement mechanism unit 107 will be described.

First, in the vertical movement mechanism unit 105, the ascending position retracted from the base plate 109 is the standby position, and after the magnetic tape 4 is pulled out to form the traveling path of the magnetic tape 4, the vertical movement base 133 is formed. The vertical movement motor 111 is rotationally driven in order to move the motor to the lowered position.

The up-and-down movement motor 111 is rotationally driven to rotationally drive the first connecting member 112 provided on the rotary shaft 111A. First connecting member 112
Is driven to rotate, so that the second connecting member 11
3 is driven to rotate. The second connecting member 113 is rotationally driven to rotationally drive the rotating shaft 114.

The rotary shaft 114 rotates to drive the worm gear 115 to rotate. The worm gear 115 rotationally drives the worm wheel 120 to rotate. Worm wheel 120
The drive shaft 122 is rotationally driven by rotationally driving.

The drive shaft 122 is rotationally driven to rotationally move the timing belt 123 via the pulley 124 provided at the upper end. The timing belt 123 is rotated to move the first screw guide shaft 125 and the second screw guide shaft 126.
Is driven to rotate via pulleys 127 and 128, respectively.

The first screw guide shaft 125 and the second screw guide shaft 125
The screw guide shaft 126 is rotationally driven to rotationally move the first guide nut 134 and the second guide nut 135. First guide nut 13
The fourth and second guide nuts 135 rotate and move to move the vertical guide base 133 to which the first guide nut 134 and the second guide nut 135 are fixed.
Is moved to the lowered position along the guide shaft 129.

The vertical movement base 133 moves to the lowered position, and the motor stop member 1 provided on the outer peripheral portion thereof.
Reference numeral 39 blocks the sensor portion of the descent position sensor (not shown). In the descending position sensor, the motor stop member 139 provided on the up-and-down moving base 133 blocks the sensor portion, so that the up-and-down moving motor 111 is stopped from rotating. Therefore, the movement of the vertical movement base 133 is stopped, and the first positioning shaft 141 to the third positioning shaft 143 provided on the vertical movement base 133 are moved to the first positioning member 145 to the third positioning member 145. Abut the member 147.

The first positioning shaft 141 to the third positioning shaft 143 are brought into contact with the first positioning member 145 to the third positioning member 147, so that the first positioning hole 141A to the third positioning hole 143A. First positioning protrusion 145A to third positioning protrusion 147A
Are inserted respectively.

Therefore, the up-and-down moving base 133 includes the first positioning hole 141A to the third positioning shaft 143A.
By inserting the first positioning protrusion 145A to the third positioning protrusion 147A, the lowered position is reliably positioned.

When the vertically moving base 133 moves to the lowered position, the fourth positioning shaft 144 comes into contact with an abutting surface (not shown) provided on the base plate 109. Therefore, the vertical movement base 133 is surely positioned at the lowered position, that is, the vertical movement base 13.
3, the roller arm portion 108 provided on the slide base 149 superposed on the vertically moving base 133 is moved to the position corresponding to the magnetic tape 4 wound on the supply side reel 3 by moving to the lowered position. Be moved.

Next, in the slide moving mechanism 106, as shown in FIG. 10, the first position where the slide base 149 corresponds to the M cassette 1A is the reference position. The slide movement mechanism unit 106 moves the slide base 149 from the first position to the second position approaching the L cassette 1B in order to correspond to the L cassette 1B.

In the slide movement mechanism 106, the vertical movement base 133 moves the vertical movement base 133 to the lowered position, so that the connecting pin 151 of the drive shaft 150 provided on the vertical movement base 133 slides. Connecting groove 152A of the connecting member 152 of the motor 153
Are engaged and connected.

Then, the slide movement mechanism section 106 drives the slide movement motor 153 to rotate, thereby rotating the connecting member 152. Connecting member 152
Is driven to rotate, so that the slide moving mechanism 16
The drive shaft 150 of 0 is driven to rotate.

The drive shaft 150 is rotationally driven to rotationally drive the first gear 171 provided at the upper end portion. The first gear 171 is rotationally driven to rotationally drive the second gear 172. Second gear 1
72 is rotationally driven to move the pulley 1 for movement.
74 is rotated.

As the moving pulley 174 is rotated and moved, the groove portion has the first wire member 175A and the second wire member 175A.
The first wire member 175A and the second wire member 175B are moved by contacting the first wire member 175B. First wire member 175A and second wire member 1
75B is moved to move the first position holding member 167 and the second position holding member 1 provided at both ends.
Move 68.

The first position holding member 167 and the second position holding member 168 move to move the first guide shaft 163 and the second guide shaft 164.
Then, the slide base 149 is connected to the first guide shaft 16
The third and second guide shafts 164 are moved along the first guide slit 161 and the second guide slit 162 to be moved to the second position corresponding to the L cassette 1B shown in FIG. .

Further, as the second gear 172 is rotationally moved, the first detecting projection 172B provided in the opening 172A is inserted into the groove formed in the first position sensor 178A. To be done. Therefore, the first position sensor 178A stops the rotational drive of the slide movement motor 153.

Further, the moving pulley 174 is engaged with the engaging portion provided on the second wire member 175B in the groove portion when the slide base 149 is moved to the second position. Then, the slide base 149 slid to the second position causes the first position holding member 167 and the second position holding member 168 to be subjected to the elastic force of the first wire member 175A, so that the position shift occurs. It is securely fixed without doing.

The roller arm moving mechanism section 107 presses the roller arm 214 against the magnetic tape 4 wound on the supply reel 3 when the roller arm moving motor 1 is pressed.
82 is driven to rotate. Roller arm moving motor 182
Is rotationally driven to rotationally drive the rotary shaft 182A and rotationally drive the first connecting member 183.

The first connecting member 183 is rotationally driven to rotationally drive the second connecting member 184.
The second connecting member 184 rotationally drives the driving shaft 185 to rotate. The drive shaft 185 is rotationally driven to rotationally drive the worm gear 187.

The worm gear 187 is rotationally driven to rotationally drive the first gear 196. The first gear 196 is driven to rotate, whereby the first gear 196 is rotated.
The first support shaft 195 provided with the gear 196 is rotationally driven. The first support shaft 195 is rotatably driven so that the second support shaft 195 is provided with a second support shaft 195 at a tip end portion thereof.
The gear 196 of is driven to rotate.

The second gear 196 is rotationally driven to rotationally drive the third gear 199. The third gear 199 is rotationally driven to rotationally drive the second support shaft 198 provided with the third gear 199. The second support shaft 198 is rotationally driven to rotationally drive the fourth gear 200 provided in the middle of the second support shaft 198.

When the fourth gear 200 is rotationally driven, the roller arm 214 provided with the gear portion 201 meshed with the fourth gear 200 is moved. That is, the roller arm 214 is rotated by the roller arm moving motor 182, so that the worm gear 187 and the first gear 196 to the fourth gear 20.
Moved through 0.

As described above, the magnetic tape winding apparatus 101 of the embodiment tape cassette is provided with the axis of the touch roller 219 inclined in the azimuth angle direction by the inclination angle θ _{1 with} respect to the width direction of the magnetic tape 4. As a result, the magnetic tape 4 is moved closer to the lower flange 3D side and wound up.

Therefore, the magnetic tape winding device 101 of the tape cassette can prevent the occurrence of inconveniences such as unevenness of the tape edges and steps when the magnetic tape 4 is wound. Therefore, the magnetic tape winding device 101 of the tape cassette can properly wind the magnetic tape 4 by suppressing the air film generated between the magnetic tapes 4 wound around the supply reel 3.

Further, in the magnetic tape winding device 101 of the tape cassette, since the axis of the touch roller 219 is inclined with respect to the axis of the supply reel 3 by the inclination angle θ ₂ in the tilt angle direction, The pressure contact force is evenly applied to the tape edges on both sides of the tape 4. Therefore, the magnetic tape winding device 101 of the tape cassette can properly wind the magnetic tape 4.

Further, the magnetic tape winding device 101 of the tape cassette is provided with an adjusting mechanism composed of the first adjusting screw 238 and the second adjusting screw 239, so that the magnetic tape 4 is pressed against the magnetic tape 4. Laura 219
The tilt angle θ _{1 in} the azimuth angle direction and the tilt angle θ _{2 in} the tilt angle direction can be easily adjusted.

Furthermore, since the magnetic tape winding device 101 for the tape cassette is provided with the elastic supporting member 188 for supporting the touch roller 219 so as to be elastically displaceable, the elastic supporting member 188 is wound around the supply reel 3. The magnetic tape 4 is elastically displaced in accordance with the minute change amount of the winding diameter dimension of the magnetic tape 4. Further, the magnetic tape winding device 101 of the tape cassette can cause the touch roller 219 to follow changes in the winding diameter of the magnetic tape 4 and changes in the pressure contact force due to vibration of the magnetic tape 4.

Furthermore, in the magnetic tape winding device 101 of the tape cassette, the first and second pressure contact force sensors 193 for detecting the elastic displacement amount of the elastic support member 188, respectively.
Since A and 193B are provided, respectively, the roller arm 21 is based on the pressure contact force detection signals output from the first and second pressure contact force sensors 193A and 193B.
4 is slid. The magnetic tape winding device 101 of the tape cassette is configured such that the magnetic tape 4 and the touch roller 219
Since the roller arm 214 that presses against the magnetic tape 4 is slid according to the pressing force, the touch roller 219 can be pressed against the magnetic tape 4 with a constant pressing force.

The magnetic tape winding device 101 of the above-described tape cassette of the embodiment is located on the inner peripheral portion of the running path of the magnetic tape 4 pulled out from the video tape cassette 1, and is supplied to the supply side reel 3 and the winding side. The touch roller 219 is arranged substantially at the center of the reel 2 and is in pressure contact with the magnetic tape 4 from the inner circumference side of the running path. For example, the touch roller is attached to the magnetic tape 4 from the outer circumference side of the running path. Needless to say, the structure may be such that they are pressed against each other.

[0166]

As described above, according to the magnetic tape winding device of the tape cassette of the present invention, the touch roller is
Since the axis of the magnetic tape is inclined with respect to the width direction and is supported by the roller arm member, it is possible to prevent inconveniences such as uneven tape edges when the magnetic tape is wound. Therefore, the magnetic tape winding device for the tape cassette can favorably wind the magnetic tape wound on the tape reel.

Further, according to the magnetic tape winding apparatus of the tape cassette of the present invention, the axis of the roller arm member is inclined so that the touch roller is parallel to the outer peripheral portion of the reel hub having the draft. By being supported, when the magnetic tape is wound, a pressure contact force is evenly applied to the tape edges on both sides. Therefore, the magnetic tape winding device for the tape cassette can favorably wind the magnetic tape wound on the tape reel.

Further, according to the magnetic tape winding device of the tape cassette of the present invention, since the elastic supporting member for elastically displacing the touch roller is provided,
It is possible to accurately follow minute changes in the winding diameter of the magnetic tape wound on the tape reel and changes in the pressure contact force due to vibration of the magnetic tape. Further, the magnetic tape winding device of the tape cassette is provided with the pressure contact force detecting means for detecting the pressure contact force of the touch roller according to the elastic displacement amount of the elastic supporting member, and thus the pressure contact force detecting means outputs. The roller arm member is slid based on the pressure contact force detection signal. Therefore, the magnetic tape winding device of this tape cassette can press the touch roller against the magnetic tape with a constant pressing force. Therefore, the magnetic tape winding device of this tape cassette is
The magnetic tape can be well wound.

[Brief description of drawings]

FIG. 1 is a plan view showing a tape evaluation device in which a magnetic tape winding device of a tape cassette according to an embodiment of the present invention is adopted.

FIG. 2 is a plan view showing a loading device of the tape evaluation apparatus.

FIG. 3 is a plan view showing an up-and-down moving mechanism portion which constitutes a magnetic tape winding device of the tape cassette.

FIG. 4 is a partial cross-sectional side view shown for explaining an ascending position of an up-and-down moving mechanism portion that constitutes the magnetic tape winding device of the tape cassette.

FIG. 5 is a partial cross-sectional side view shown for explaining a lowered position of an up-and-down moving mechanism portion which constitutes a magnetic tape winding device of the tape cassette.

FIG. 6 is a plan view shown for explaining a state in which an up-and-down moving mechanism portion which constitutes a magnetic tape winding device of the tape cassette is supported.

FIG. 7 is a plan view shown for explaining an up-and-down moving mechanism portion which constitutes a magnetic tape winding device of the tape cassette.

FIG. 8 is a vertical cross-sectional view shown for explaining an up-and-down moving mechanism portion which constitutes a magnetic tape winding device of the tape cassette.

FIG. 9 is a plan view showing a slide movement mechanism portion which constitutes a magnetic tape winding device of the tape cassette.

FIG. 10 is a plan view showing a slide movement mechanism portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 11 is a vertical cross-sectional view showing a slide moving mechanism portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 12 is a vertical cross-sectional view shown for explaining a pressure contact member of a slide movement mechanism section that constitutes the magnetic tape winding device of the tape cassette.

FIG. 13 is a perspective plan view showing a roller arm moving mechanism portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 14 is a perspective plan view showing a roller arm moving mechanism portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 15 is a perspective side view showing a roller arm moving mechanism portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 16 is a plan view showing a roller arm portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 17 is a plan view showing a roller arm portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 18 is a plan view showing a roller arm portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 19 is a vertical cross-sectional view showing a roller arm portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 20 is a plan view showing a roller arm portion that constitutes the magnetic tape winding device of the tape cassette.

FIG. 21 is a side view shown for explaining an elastic supporting member of a roller arm portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 22 is a side view showing a touch roller of a roller arm portion which constitutes the magnetic tape winding device of the tape cassette.

FIG. 23 is a schematic cross-sectional view shown for explaining a touch roller of a roller arm portion that constitutes a magnetic tape winding device of the tape cassette.

FIG. 24 is a schematic plan view shown for explaining a state in which the touch roller of the roller arm unit that constitutes the magnetic tape winding device of the tape cassette is pressed against the magnetic tape.

FIG. 25 is a schematic cross-sectional view shown for explaining a state in which the touch roller of the roller arm unit that constitutes the magnetic tape winding device of the tape cassette is pressed against the magnetic tape.

[Explanation of symbols]

1 Video Tape Cassette 4 Magnetic Tape 100 Tape Evaluation Device 101 Magnetic Tape Sizing Device for Tape Cassette 107 Roller Arm Moving Mechanism (Roller Arm Drive Mechanism) 108 Roller Arm 149 Slide Base (Base) 188 Elastic Support Member 193A 1st Pressure contact force sensor (pressure contact force detection means) 193B second pressure contact force sensor (pressure contact force detection means) 205 roller arm support member 214 roller arm 219 touch roller

Claims (8)

[Claims] 1. A magnetic tape winding device, which is arranged so as to face a running path of a magnetic tape pulled out from a tape cassette, and which winds the magnetic tape in a state of being arranged on an outer peripheral portion of a tape reel, with respect to the magnetic tape. And a touch roller that presses the magnetic tape in the width direction to wind the magnetic tape around the outer peripheral portion of the tape reel by applying a constant pressure contact force to the tape reel. A roller arm member that faces the inside of the tape cassette, a roller arm support member that slidably supports the roller arm member so that the touch roller moves in the diametrical direction with respect to the tape reel, and this roller arm support member is assembled. And a roller arm drive that slides the roller arm member along the roller arm support member With the door, a touch roller, the roller arm member, a magnetic tape Seimaki device of a tape cassette in which the axis is characterized in that it is supported by being inclined with respect to the width direction of the magnetic tape. 2. The magnetic tape winding device for a tape cassette according to claim 1, further comprising an adjusting mechanism for adjusting an inclination angle of an axis line of the touch roller with respect to a width direction of the magnetic tape. 3. A magnetic tape winding device arranged so as to face a running path of a magnetic tape drawn out from a tape cassette and winding the magnetic tape in a state of being trimmed around an outer peripheral portion of a tape reel, with respect to the magnetic tape. And a touch roller that presses the magnetic tape in the width direction to wind the magnetic tape around the outer peripheral portion of the tape reel by applying a constant pressure contact force to the tape reel. The roller arm supporting member that faces the inside of the tape cassette, the roller arm supporting member that slidably supports the roller arm member so that the touch roller moves in the diametrical direction with respect to the tape reel, and the roller arm supporting member is assembled. And a roller arm drive that slides the roller arm member along the roller arm support member With the door, a touch roller, magnetic tape Seimaki device of the tape cassette, characterized in that the axis of the roller arm member so as to be parallel to the outer peripheral portion of the reel hub which draft is attached is supported by being tilted. 4. The magnetic tape winding device for a tape cassette according to claim 3, further comprising an adjusting mechanism for adjusting an inclination angle of an axis line of the touch roller with respect to an outer peripheral portion of the reel hub. 5. A magnetic tape winding device arranged so as to face a running path of a magnetic tape pulled out from a tape cassette, and winding the magnetic tape in a state in which the magnetic tape is arranged on the outer peripheral portion of the tape reel. And a touch roller that presses the magnetic tape in the width direction to wind the magnetic tape around the outer peripheral portion of the tape reel by applying a constant pressure contact force to the tape reel. The roller arm supporting member that faces the inside of the tape cassette, the roller arm supporting member that slidably supports the roller arm member so that the touch roller moves in the diametrical direction with respect to the tape reel, and the roller arm supporting member is assembled. And a roller arm drive that slides the roller arm member along the roller arm support member The touch roller is supported by the roller arm member with its axis inclined relative to the width direction of the magnetic tape and with its axis inclined so as to be parallel to the outer peripheral portion of the reel hub having a draft. A magnetic tape winding device for a tape cassette, which is characterized in that 6. The adjusting mechanism according to claim 5, further comprising an adjusting mechanism for adjusting an inclination angle of an axis line of the touch roller with respect to a width direction of the magnetic tape and an inclination angle of an axis line of the touch roller with respect to an outer peripheral portion of the reel hub. Magnetic tape winding device for tape cassette. 7. A magnetic tape winding device arranged to face a running path of a magnetic tape drawn out from a tape cassette and winding the magnetic tape in a state where the magnetic tape is arranged on the outer peripheral portion of the tape reel. And a touch roller that presses the magnetic tape in the width direction to wind the magnetic tape around the outer peripheral portion of the tape reel by applying a constant pressure contact force to the tape reel. The roller arm supporting member that faces the inside of the tape cassette, the roller arm supporting member that slidably supports the roller arm member so that the touch roller moves in the diametrical direction with respect to the tape reel, and the roller arm supporting member is assembled. And a roller arm drive that slides the roller arm member along the roller arm support member Preparative provided, the roller arm member, a magnetic tape Seimaki device of the tape cassette and an elastic supporting member for supporting the touch roller freely elastically displaceable is provided. 8. The elastic supporting member is provided with pressure contact force detecting means for detecting the pressure contact force of the touch roller pressed against the magnetic tape according to the elastic displacement amount, and the pressure contact force output by this pressure contact force detecting means is provided. The magnetic tape winding device for a tape cassette according to claim 7, wherein the roller arm member is slid based on the force detection signal.