JPH03212876A - Manufacture of tape cartridge and liner sheet for tape cartridge - Google Patents

Abstract

PURPOSE:To prevent a load applied excessively on the feed of a tape by curly-molding the part between front and rear terminals of a liner sheet between the inner wall plane of a main body case and a hub in a rightward/leftward direction, and the part between right and left terminals of it in a forward/backward direction so as to be formed in middle projecting shape to a side facing with the tape. CONSTITUTION:The liner sheet 6 is interposed between the inner wall plane of the main body case 1 and the tape 3 and the hub 4 on which the tape is wound, and the liner sheet 6 is curly-molded so that the part between the front and rear terminals 6a, 6b can be formed in the middle projecting shape extending over the rightward/ leftward direction, and the part between right and left terminals 6d, 6e extending over the forward/backward direction. Therefore, the upward/downward movement of the tape 3 and the hub 4 can be suppressed by pressing the tape 3 at right and left hubs 4, 4 and between them most intensively with a center part 6c being curled in the middle projecting shape. On the other hand, the liner sheet 6 presses the tape 3 lightly at the outside of each hub 4 in the rightward/leftward direction. In such a way, it is possible to display stability in the feed of the tape satisfactorily without applying an excessive load on the feed of the tape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape cartridge characterized by the curled shape of a liner sheet housed in a main body case, and a method for manufacturing the liner sheet.

[Conventional technology]

Some tape cartridges have liner sheets 6 interposed between the inner surfaces of the upper and lower walls of the main body case l and the tape 3 and the hub 4 around which it is wound, as shown in FIGS. 2 and 3. .

Conventionally, the liner sheet 6 has a substantially rectangular shape with horizontally elongated left and right sides, and the center portion between the front and rear ends is curled into a convex shape in the left and right longitudinal direction.

The curled liner sheet 6 uses its own elastic restoring force to press the tape 3 and the hub 4 to sandwich it from above and below, thereby ensuring stability in tape running and improving the winding of the tape 3 around the hub 4. to improve (having ribs)

Conventionally, such a liner sheet 6 is manufactured by punching a predetermined shape of an outer periphery, through holes, etc. from a raw liner sheet, as shown in FIG. 8, to form a continuous liner sheet 11 in the form of a band. There, the front and rear ends of left and right horizontally elongated liner sheets 6 are connected in series.

This liner sheet continuous body 11 is wound up on a winding wheel 13 and placed in a rolled state at a sheet mounting position on an assembly line. Then, the liner sheet continuous body 11 is intermittently fed out from the winding wheel 13, and
Separate by cutting individually along the line. This separated liner sheet 6 was captured by suction and mounted at a predetermined position inside the main body case 1 on the assembly line.

[Problem to be solved by the invention]

However, the conventional liner sheet 6 is curled in the left and right longitudinal directions so that the center portion between the front and back has a convex shape. Therefore, for example, when the tape 3 is wound around the hub 4, the upper and lower edges of the tape 3 are convex in the liner sheet 6 at the right outer side of the right hub 4 and the left outer side of the left hub 4 in FIG. The tape is always guided in contact with the front and rear center portions of the tape, and if the pressing force by the liner sheet 6 is increased, the tape running load becomes too large.

On the other hand, if the degree of curl is reduced, the overall pressing force of the tape 3 and the hub 4 will be insufficient, and the vertical movement of these cannot be satisfactorily suppressed.

Also, when manufacturing the liner sheet 6, the take-up reel 1
Since the body portion 14 of No. 3 has a simple cylindrical shape, when the liner sheet continuous body 11 is wound around it, the curling properties that have been formed in advance on the unit liner sheet 6 tend to collapse. Furthermore, the degree of curl of the liner sheet 6 differs between the inner circumference and the outer circumference of the wound layer on the winding wheel 13.

In other words, as the winding diameter increases, the degree of curling decreases.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a tape equipped with a liner sheet that ensures a pressing action between the tape and the hub, maintains good winding properties of the tape on the hub, and prevents the running load of the tape from becoming excessive. There is a way to get the cartridge.

Another object of the present invention is to provide a method for manufacturing a liner sheet for a tape cartridge that can satisfactorily impart and maintain curling properties.

[Means to solve the problem]

The present invention provides a tape cartridge in which a liner sheet 6 is interposed between the inner wall surface of a main body case 1 and a tape 3 and a hub 4 around which the tape 3 is wound. It is characterized in that it is curled in the left-right direction and between the left and right ends 6d and 68 in the front-rear direction so as to have a convex shape on the side facing the tape 3, respectively.

In addition, the method of the present invention can be applied to the inner wall surface of the main body case 1 and the tape 3.
In the tape cartridge liner sheet interposed between the hub 4 and the hub 4 on which the liner sheet is wound, the liner sheet 6 is formed by punching out the original liner sheet to form left and right horizontally elongated liner sheets 6.
a step of forming a band-shaped liner sheet continuous body 11 that continues in series in the left-right direction; a step of winding the liner sheet continuous body 11 on a take-up reel 13 whose outer peripheral surface of the body portion 14 has a bulge shape; Through the process of feeding out the liner sheet continuous body 11 from the handle 13 and cutting and separating it into units of liner sheets 6, the liner sheets are separated between the front and rear ends 6a and 6b in the left and right direction, and between the left and right ends 6d and 6e in the front and rear direction. , it is required to obtain a liner sheet 6 which is curled to have a convex shape on the side facing the tape 3.

[Effect]

The liner sheet 6 is curled most centrally in the central portion 6c of the front, rear, left and right sides. Curl here means curving without creating streaks. Specifically, in FIG. 2, the front and rear, left and right center portions 6c of the liner sheet 6 are located between the left and right hubs 4, and this center portion 6C is located between each tape guide member located at the front inside the main body case 1. 5 to each hub 4 (away from).

The reason why the liner sheets 6 constituting the liner sheet continuum 11 are continuous in series not in the front and rear transverse directions but in the left and right longitudinal directions is because the liner sheet continuum 11 is rolled so that the body 14 is bulged in the middle. When the liner sheet 6 is wound around the take-up rule 13, the winding diameter of the liner sheet 6 on the take-up rule 13 increases, especially when the front and rear ends 6a of the liner sheet 6 are rolled up.
- This is to prevent the degree of curl between left and right between 6b from changing. In other words, in order to suppress the vertical movement of the hub 4 and tape 3, it is effective to make the curling property of the liner sheet 6 so that the central part between the front and rear ends 6a and 6b has a convex shape in the left and right direction. When the unit liner sheet 6 is made into a sheet continuous body 11 continuous in the transverse direction from front to back as in the conventional example shown in FIG. This is because the values change gradually and do not become regular.

〔Effect of the invention〕

According to the invention described in claim (1), the liner sheet 6
Since the front, rear, left and right center portions 6c are curled in a convex shape, the left and right hubs 4, 4 and the tape 3 between both hubs 4, 4 are pressed most strongly with this center portion 6c. and suppresses the vertical movement of the hub 4. On the other hand, since the liner sheet 6 lightly presses the tape 3 on the outer side of each hub 4 in the left and right direction, no excessive load is applied to the tape running. Therefore, it is possible to exhibit good tape running stability.

Further, according to the method of the present invention as set forth in claim (2), the trunk portion 14
Since the liner sheet continuous body 11 is rolled around the winding wheel 13 whose outer circumferential surface is in the shape of a bulge, by winding up the liner sheet continuous body 11 on the winding wheel 13, the front and back of each liner sheet 6 are automatically adjusted. It is possible to curl into a medium convex shape between the ends 6a and 6b in the left and right longitudinal direction, and between the left and right ends 6d and 6e in the front and back direction, and
The curling property can be maintained even if left for a long time. Moreover, since the liner sheet continuous body 11 is constructed in such a manner that the unit liner sheets 6 are continuous in the left-right direction, even if the winding diameter of the liner sheet continuous body 11 with respect to the take-up reel 13 increases, the front and rear ends 6a and 6b are particularly important. It has the advantage that the degree of curl in the left and right direction between the liner sheets 6 can be maintained constant at all times, and that the provision of curlability to each liner sheet 6 and the maintenance of the degree of curl can be achieved simultaneously and accurately.

[First Embodiment] FIGS. 1 to 4 illustrate a Phillips-type tape cartridge as a first embodiment of the present invention.

In FIGS. 2 and 3, the main body case 1 is formed by screwing together upper and lower cases 1a and 1b in a lid-like manner.
The main body case 1 has drive shaft insertion holes 2 on the left and right sides of the central part thereof, which pass through the top and bottom. Inside the main body case 1, a pair of hubs 4, 4, on which a tape 3 is wound, are rotatably housed on the left and right sides of the drive shaft insertion holes 2, 2. Tape guide members 5, 5 are arranged on the front left and right sides of the main body case 1, and the tape 3 is fed out from one hub 4 to the front of the case via these guide members 5, 5, and wound onto the other hub 4. It will be done.

Between the upper and lower inner wall surfaces of the main body case 1 and the tape 3 and the hub 4 around which it is wound, there are two upper and lower inner sheets 6.
6 are interposed respectively, and the hub end face and tape edge come into elastic contact and sliding contact with these upper and lower liner sheets 6. In FIG. Holes 7, 7 corresponding to the drive shaft insertion holes 2, 2 are provided in a penetrating manner on the left and right sides of the central portion thereof. Then, the front and rear ends 6 of the liner sheet 6
Near a and 6b, holes 9 and 9 for position regulation are inserted at the center in the left and right direction.

The shape of this hole 9 can be freely changed, and both may be formed in the shape of a notch.

The liner sheet 6 has a substantially front-to-rear central portion between its front end 6a and a rear end 6b spanning the left and right longitudinal directions, and a substantially horizontal center portion between its left end 6d and right end 6e spanning the front-rear short direction. , the curls are formed so as to curl in a convex shape toward the side facing the tape 3.

That is, the liner sheet 6 is located at the front, rear, left and right center portions 6.
It is shaped into a gentle curl so that it protrudes the most at point c. The center portion 6c of the liner sheet 6 is located between the hubs 4 in the main body case 1, and elastically presses the hub end face and tape edge at the corresponding location to suppress vertical movement thereof. At that time, the liner sheet 6 is basically curled between the left and right sides so that the central part between the front and rear ends 6a and 6b has the most convex shape.
The degree of curl is not uniform between the left and right sides. This is because the liner sheet 6 is curled into a convex shape in the front-back direction between the left and right ends 6d and 6e. Therefore, on the outer side of each hub 4 in the left and right direction, the liner sheet 6 is in light elastic contact with the tape 3, and each tape guide member 5
In the tape path from the liner sheet 6 to the hub 4, the tape edge is not subjected to excessive pressing action due to the curling properties imparted to the liner sheet 6.

The material of the liner sheet 6 can be selected from plastics such as polyester and polyvinyl chloride, or paper sheets such as glassine paper and high-quality paper. It is preferable to use a polytetrafluoroethylene resin which has an excellent lubricity effect, or a sheet base material of which has been subjected to antistatic treatment by containing a conductive agent such as graphite powder or carbon black.

3 and 4 illustrate a method for manufacturing the liner sheet 6, in which the outer peripheral edge shape and the holes 7 and 9 are punched out from the raw liner sheet, and the left and right ends of each unit liner sheet 6 are punched out. 6d and 6e form a band-shaped liner sheet continuous body II continuous in series in the left-right direction.

Next, this liner sheet continuous body 11 is attached to both flanges 12.
- Wind up on the winding rule 13 with 12.

The body 14 of this take-up reel 13 has both flanges 12 and 1.
The width dimension between the two substantially corresponds to the front-to-back width of the liner sheet 6, and the outer circumferential surface of the body portion 14 is formed into a tapered crown that protrudes most in the center in the width direction over the circumferential direction.

Therefore, when the liner sheet continuum 11 is wound up on the winding wheel 13 whose outer peripheral surface shape of the body part 14 adopts the above specifications, each liner sheet 6 of the unit automatically has a front and rear end 6.
The front-rear center portions of a and 6b are curled in the left-right direction, and the left-right center portions of the left and right ends 6d and 6e are curled in the front-rear direction. At this time, even if the winding diameter of the liner sheet continuous body 11 on the take-up reel 13 increases, the degree of curl in the left-right direction between the front and rear ends 6a and 6b, which is particularly important, remains unchanged and remains constant. Even if it is left in that state for a long time, it will not lose its curling properties or cause any deviation in its degree of curling, as it will contribute to imparting curling properties. Therefore, after that, the winding is done near the assembly line.
The liner sheet continuous body 11 is fed out from the liner 13, cut and separated into unit liner sheets 6 along line A-A in the figure, and the separated individual liner sheets 6 are sequentially incorporated into the main body case 1. good.

[Second Embodiment] FIGS. 6 and 7 show a second embodiment of the present invention, in which the liner sheet 6 is curl-formed between the front and rear ends 6a and 6b in a triangular shape over the left and right longitudinal directions. ing. In this case, unlike the first embodiment with a single peak shape, the distance between the front and rear peaks is shortened, so that assembly is effective in preventing curling and collapse later. In this way, the curl shape may have a plurality of peaks.

In order to give the liner sheet 6 the above-mentioned triple chevron-shaped curl, for example, as shown in FIG. What is necessary is to wind up the sheet continuous body 11.

[Brief Description of the Drawings] Figures 1 to 4 show a first embodiment of the present invention.
is a side view of the liner sheet, FIG. 1(C) is a front view of the liner sheet, FIG. 2 is a partially cutaway plan view of the tape cartridge, FIG. 3 is a side view of the center longitudinal section of the tape cartridge, and FIG. FIG. 5 is a perspective view illustrating how to wind up the liner sheet continuous body onto the take-up reel; FIG. 6 and 7 show a second embodiment of the present invention, FIG. 6 is a side view of the liner sheet, and FIG. 7 is a perspective view illustrating how to wind the liner sheet continuous body onto a take-up reel. It is a diagram. FIG. 8 is a perspective view illustrating how to wind up a continuous liner sheet on a conventional take-up reel. 1...Body case, 3...Tape, 4...Hub, 6...Liner sheet, 6a...Liner Front end of the seat, 6b...
... Rear end of liner sheet, 6C ... Center part of liner sheet, 6d ... Left end of liner sheet, 6e ... Right end of liner sheet, 11 ...
... liner sheet continuous body, 13 ... take-up reel, 14 ... body of take-up reel. Figure 5 Figure 5

Claims (1)

[Claims] 1. A liner sheet (6
) are interposed, and the liner sheet (6) is located at the front and rear ends (6a, 6b) of this.
The gap extends in the left and right direction, and the left and right ends (6d, 6e)
A tape cartridge characterized in that the gap is curled in the front-rear direction so that the side facing the tape (3) has a convex shape. 2. In the tape cartridge liner sheet interposed between the inner wall surface of the main body case (1) and the tape (3) and the hub (4) around which it is wound, the original liner sheet is punched out to form left and right horizontally elongated sheets. liner sheet (6
) are formed in series in the left-right direction to form a belt-shaped liner sheet continuum (11), and a take-up reel (13) in which the outer peripheral surface of the body (14) is bulged in the middle.
) of winding the liner sheet continuous body (11) onto the winding reel (13);
After the step of cutting and separating each unit liner sheet (6), the tape (6) is cut between the front and rear ends (6a and 6b) in the left and right direction, and between the left and right ends (6d and 6e) in the front and back direction. 3) A method for manufacturing a liner sheet for a tape cartridge, comprising obtaining a liner sheet (6) curled to have a convex shape on the side facing the side.