JPH0249866B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head wrapping device for wrapping a magnetic tape contacting surface of a magnetic head.

[Conventional technology]

Conventionally, as this type of magnetic head wrapping device, those disclosed in Japanese Patent Publication No. 45-37718, Japanese Utility Model Application Publication No. 49-28414, and Japanese Unexamined Utility Model Publication No. 51-48894 are known.

With this conventional structure, a magnetic head is provided so that it can come into contact with a rotating grindstone-like polishing disk, and the magnetic head is oscillated to polish the tip of the magnetic head in an arc shape, or the magnetic head is moved in one direction. A magnetic head is provided so that it can be contacted with the wrapping tape that is wrapped.
A structure in which the magnetic head is polished by rotating it has been disclosed.

[Problem to be solved by the invention]

However, this conventional structure has a structure in which polishing is performed by two actions: the rotation of the polishing disk or the mere transporting action of the wrapping tape, and the swinging and rotating action of the magnetic head, and moreover, it provides both of these actions. Since the direction of movement, which is the direction of action, is the same direction, the polishing action is performed by two actions in the same direction. For this reason, it is not always possible to polish (wrapping) the curved polished surface (wrapping surface) of the magnetic head evenly and uniformly with the unpolished part of the abrasive material, so the surface roughness (smoothness) of the polished surface is not satisfied. The disadvantage is that you don't get what you want.

[Means to solve the problem]

The purpose of the present invention is to solve these disadvantages, and the gist of the present invention, referring to the accompanying drawings, is to provide a head swinging mechanism for swinging a magnetic head 1 around the center of curvature of its wrapping surface 2. H, a tape transport mechanism T that slides on the wrapping surface 2 of the magnetic head 1 and continuously transports the wrapping tape 3 having ends in the tangential direction of the wrapping surface in one direction; and the tape transport mechanism T is connected to the magnetic head. A magnetic head wrapping device is characterized in that it is equipped with a tape swinging mechanism O that causes a tape swinging mechanism O to linearly reciprocate in the axial direction of a swinging center.

[Operation] The magnetic head swings around the center of curvature of its wrapping surface by the head swinging mechanism.
The wrapping tape with an end in sliding contact with the wrapping surface is continuously transported in one direction tangentially to the wrapping surface by a tape transport mechanism, and the wrapping tape is moved around the center of swing of the magnetic head by a tape swing mechanism. It linearly reciprocates in the axial direction, and wrapping is performed by the three effects brought about by these three movements: rocking, transport, and reciprocating motion.

〔Example〕

1 to 4 show embodiments of the invention.

The head swinging mechanism H shown in this figure has a holding cylinder 5 rotatably protruded from the front of the machine body 4, and the center of curvature c of the wrapping surface 2 of the magnetic head 1 is attached to the tip of the holding cylinder 5.
A holding groove 6 is formed to hold the magnetic head 1 at a position where the center of swing of the holding member 5 matches, and a swing motor 7 is attached to the body 4.
A crank disk 8 is fixed to the main shaft of the crank disk 8, and a swing gear 9 is pivotally attached above the crank disk 8.
A connecting rod 10 is installed between the magnetic head 1 and the crank disk 8, and a drive gear 11 connected to the holding cylinder 5 is meshed with the oscillating gear 9, so that the magnetic head 1 is caused to oscillate.

Tape transport mechanism T and tape shaking mechanism O shown in this figure
A vertical slide table 12 is fixed to the side surface of the machine body 4 so as to be slidable up and down, and a front and rear slide table 13 is provided on this vertical slide table 12 and is slidable in the axial direction of the center of swing of the magnetic head 1. A left and right slide base 14 that can freely slide left and right toward the magnetic head 1 is provided on the side surface of the magnetic head 13. This left and right slide base 14 is slid left and right by a cylinder 15, and a bearing base 16 is mounted on the left and right slide base 14.
A pressing rod 18 which is moved back and forth slightly by a fine adjustment nut 17 is inserted into the bearing stand 16, and a pressing plate is provided at the center of the tip of the pressing rod 18 to press the wrapping tape 3 against the wrapping surface 2 of the magnetic head 1. 19
Furthermore, guide plates 20 are attached to both sides of the pressing rod 18 to guide the wrapping tape 3 having Y-shaped ends in the tangential direction of the wrapping surface 2, and A supply reel 21 wound with wrapping tape 3 is attached to the upper part, and an idle roller 22 and a drive roller 23 are disposed opposite each other in contact with each other at the lower part of the left and right slide table 14, and the wrapping tape is released from the supply reel 21. 3 to information board 2
0, the idle roller 22 bypasses the press plate 19
and the drive roller 23, and the drive roller 23
is rotated by a motor (not shown) to transfer the wrapping tape 3. Furthermore, a linear reciprocating motor 24 is provided at the bottom of the body 4, and an eccentric cam 25 is fixed to the main shaft of this linear reciprocating motor 24, and the wrapping tape 3 is moved back and forth. A long hole 26 is bored in the base 13, a bell crank 27 is pivotally attached to the side of the fuselage 4, and a cam roller 28 that contacts the eccentric cam 25 is pivotally attached to one end of the bell crank 27. A longitudinally movable roller 29 is pivotally attached to the other end of the crank 27, and this longitudinally movable roller 29 is fitted into the elongated hole 26, so that the longitudinally movable roller 29 is always positioned in front between the longitudinally sliding base 13 and the vertically sliding base 12. A compression spring 30 is installed to apply contact pressure between the cam roller and the eccentric cam, and elastically bias the cam roller in a direction to maintain the contact state at all times, and the eccentric cam 25 is rotated by the linear reciprocating motor 24.
This eccentric cam 25 causes the bell crank 27 to swing, and the bell crank 27 causes the front and rear slide bases 1 to swing.
3 is configured to make linear reciprocating motion in the axial direction of the swing center of the magnetic head, which is the front-rear direction.

31 is a dovetail groove between the vertical slide table 12 and the fuselage 4;
32 is a front and back slide table 13 and a top and bottom slide table 12
33 is a dovetail groove between the front and rear slide bases 13 and the left and right slide bases 4, 34 is a fulcrum shaft of the bell crank 29, and 35 is a cushion plate made of urethane rubber or the like.

〔Effect of the invention〕

As described above, in the present invention, the magnetic head 1 swings around the center of curvature of the wrapping surface 2 by the head swinging mechanism, and the wrapping tape 3 having an end is slidably in contact with the wrapping surface 2. The wrapping tape 3 is continuously transported in one direction tangentially to the wrapping surface 2 by the tape transport mechanism T.
is linearly reciprocated in the axial direction of the swing center of the magnetic head 1 by the tape swing mechanism O, and wrapping is performed by the three effects brought about by these three movements: swing, transfer, and reciprocation. Therefore, the wrapping tape 3 and the wrapping surface 2 of the magnetic head 1 are in tangential contact, and since the wrapping tape 3 is continuously transferred in only one direction, the wrapping tape 3 always exhibits a new wrapping action. In addition to the swinging of the magnetic head 1 and the continuous transport of the wrapping tape 3 in one direction, the wrapping tape 3 is also moved linearly and reciprocally in the axial direction of the swinging center of the magnetic head 1, that is, new wrapping is constantly being created. The wrapping surface 2 is wrapped by this action and these three wrapping actions. Therefore, the surface roughness (smoothness) of the wrapping surface 2 is always more even and uniform due to the contact polishing of the unpolished wrapping tape 3 on the wrapping surface 2, compared to when polished by the conventional method. By polishing, a good wrapping surface 2 with significantly improved smoothness can be obtained, and the wrapping tape 3 is moved to the center of oscillation of the magnetic head 1 by moving the tape transport mechanism T back and forth in a straight line by the tape oscillation mechanism O. Because of the horizontal structure that causes the magnetic head 1 to move linearly reciprocating in the axial direction of the magnetic head 1, compared to a structure that moves the magnetic head 1 linearly and reciprocatingly in the axial direction of its swing center, the swing center of the magnetic head 1 due to the sliding gap etc. Wrapping surface 2 can be prevented from slipping and can securely hold the center of rotation.
shape accuracy can be improved.

As described above, the intended purpose can be fully achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall front view, FIG. 2 is a perspective view of main parts, and FIG.
The figure is an overall side view, and FIG. 4 is a rear view. 1... Magnetic head, 2... Wrapping surface, 3...
...wrapping tape, c...center of curvature, H...head swinging mechanism, O...tape swinging mechanism, T...tape transport mechanism.

Claims (1)

[Claims] 1. A head swinging mechanism for swinging a magnetic head around the center of curvature of its wrapping surface, and a wrapping tape having ends in sliding contact with the wrapping surface of the magnetic head in the tangential direction of the wrapping surface. What is claimed is: 1. A magnetic head wrapping device comprising: a tape transport mechanism that continuously transports the tape in the axial direction; and a tape swing mechanism that moves the tape transport mechanism linearly and reciprocally in the axial direction of the swing center of the magnetic head.