JPS60112559A - Tape storing device - Google Patents

Abstract

PURPOSE:To achieve high speed feeding of tape by constructing a tape storing system with a void for storing tape and a fluid ejection nozzle. CONSTITUTION:A tape storing void 4 is formed with two tape guide boards 3A, 3B and a cover plate 2 while a fluid ejection nozzle 7 for ejecting gas to the rear of said void 4 and storing the tape through gas pressure is provided at the inlet of said void 4. Consequently, when adjusting tension, only micro tensile variation is produced to eliminate possibility of cutting of tape resulting in high speed feeding of tape.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a storage device for tapes, and more specifically, a tape feeding source and a connecting device for stably feeding tapes, which are relatively resistant to tension and are easy to cut, to equipment in which they are used. This invention relates to a storage device for tapes that should be placed between the device and the device in use.

Conventionally, as storage devices for the same purpose as mentioned above, there are known storage devices for various types of striatum. For example, the one shown in FIG. 4(a) has a similar configuration to a fixed sheave 101 consisting of a large number of sheave groups arranged adjacent to each other in parallel so as to be rotatable, and is arranged close to and separated from the fixed sheave 101. In this storage device, the filament ν is rotated through multiple turns across both sheaves 101 and 102, and the movable sheave 102 is movable in the direction of When the movable sheave 102 moves away from the fixed sheave 101, the filament υ is stored between the two sheaves 101 and 102, and when the movable sheave 102 moves close to the fixed sheave 101, the stored filament W is released. be.

In another storage device shown in FIG. 4(b), a cylindrical wire storage drum 103 is arranged rotatably around its central axis, and the filament bodies υ are wound around this wire storage drum 103. This is a type of storage. Therefore, by rotating the wire storage drum 103 in one direction, the filament t is stored, and by rotating in the opposite direction, the filament W is sent out.

The two models described above are typical conventional filament storage devices, and they can of course also be applied to tapes with flat cross sections.

Of course, what is important for a storage device is the ability to adjust the tension generated in the striatum, but when used for striatum that has low tensile resistance and is easy to cut, it is important to have a response that does not create excessive tension when adjusting the tension. The resistance of the storage device itself or the resistance of the storage device itself at the time of response is also an important issue. Now let's examine this point regarding the two conventional aircraft (m) mentioned above.vg
The storage devices described in Figures 4 (a) and (l) are schematically represented in Figures 5 (a) and (b), respectively. Suppose that for some reason a larger flow rate than the normal flow rate of the filament body 7t is required and the tension increases.

This excess m- of the striatum ν is released from the storage device, thereby returning the increase in tension that occurred in the striatum W to the normal value when re-stringing, but when this striatum is released, The tension AT newly added to the striatum υ due to the response resistance of the storage device (not the tension T that occurs inside the striatum during normal flow, but the instantaneous increase in the above situation) ) is the motion mode aT=Mf tl+ and the same <AT=L-! for n in FIGS. 5(a) and (b), respectively. - It can be determined from (2). Here, M of type 111 is movable sheave 10
The mass of 2, i is the acceleration when this movable sheave 102 moves to release the striatum υ.

Also, ■ is the moment of inertia around the rotation axis of the wire storage drum 103, r is the radius of rotation, and d is the angular acceleration when the wire storage drum 103 rotates in the discharge direction. As can be seen from these equations, in a typical conventional storage device,
Due to the unavoidable mass M1 or moment of inertia of the device itself, the tension becomes proportionally thicker when adjusting the tension. Zhang Kaka 3 Ka. As a result, there was a risk that the S-stripe body W would be forcibly extended, or in the worst case, it would break.

Tapes and the like used in stamp-type marking devices tend to break easily, making it impossible to reuse conventional storage devices.

The present invention eliminates the drawbacks of conventional storage devices and provides a new tape storage device that can be suitably used for tapes with low tensile strength.

An embodiment of the present invention will be described with reference to FIGS. 1 and 2. On the board surface of the substrate 1, a pair of tape guide plates 3A,
3B are erected in parallel with each other at intervals, and a lid plate 2 is placed over both tape guide plates 3A and 3B to form a tape storage cavity 4 having a rectangular cross section. The tape guide plates 3A and 3B indicate the tape 8 to be used.
A value slightly larger than the width, in this example, the height is selected. Also tape guide plate 3A.

3B may be curved in an arc shape as shown in the figure, or
It may be linear.

A delivery side guy and a troller 6 are also provided. Further, near the center of the entrance of the tape storage cavity 4, a fluid ejection nozzle 1 is provided for jetting an appropriate gas, usually air, toward the back of the tape storage cavity 4.

Ru.

A tape pad 8 for delivering a tape 10 is rotatably attached to an appropriate position on the substrate 1.

Further, a brake device 9 may be provided to prevent the tape pad 8 from rotating freely and to apply an appropriate tension to the tape 10.

Next, the operation of the tape storage device of the present invention will be explained. The tape 10 pulled out from the tape pad 8 passes through the guide roller 5 on the introduction side and the guide roller 6 on the delivery side and heads for the device to be used. Inlet side guide roller 5 and outlet side guide roller 6
The part of the tape 10 located between the fluid ejection nozzle 7
In order to receive the air pressure from the tape 10, the portion of the tape 10 curves in an arc shape and enters the tape storage cavity 4 to store the tape. This curved concave portion of the tape 10 is referred to as a fluid pressure receiving concave portion 11, and from there it is fed out while contacting one tape guide plate 3A to the feed-side guide roller 6. This is referred to as a guide plate contact portion 12. . Therefore, the tension T that normally occurs between this storage device for the tape 10 and the downstream tape use machine # (not shown in FIG. 1) is approximately equal to the gas pressure P received by the fluid pressure receiving recess 11 and the guide contact 12, and the tape 10 continues to be fed in a constant storage state in which the fluid pressure receiving recess 11 enters into the tape storage cavity 4 so as to maintain the balance of these forces. It is.

Now, when this normal state changes and more tape 10 is sent out to downstream equipment, the tension of tape 10 increases temporarily. At this time, the fluid pressure receiving recess 11 of the tape 10 moves within the tape storage cavity 4 toward the entrance, thereby compensating for the increased tape feed.
The increased tension is also adjusted to return to the normal tension.

When examining the changes in tension adjustment of this invention device with reference to Figure 6, we found that the increase in tension due to changes in the equipment used is d
When T, this value AT is roughly expressed by the formula AT=ΔP+Δ
It is thought that it is determined by F. Here, AP is the increase in fluid pressure that occurs because the fluid pressure receiving recess 11 of the tape 10 approaches the fluid jet nozzle 7 as shown by the broken line,
AF is an increase in running frictional resistance caused by an increase in the pressure that presses the tape 10 against the tape guide plate 3A by AP. Regarding the tape guide plate 3B, unlike during normal running, one tape 10 acts as if it is simply removed from contact with it, so there is no need to consider frictional resistance. AP in the above equation is extremely small because the entrance end of the tape storage cavity 4 is open, and therefore dF is also a very small value. As a result, when adjusting the tension, the tape 1
The tension increase amount ΔT that acts on 0 becomes a very small value,
There is almost no need to worry about tape cutting.

Note that in the opposite case to the above, that is, if for some reason the amount of tape feeding toward the device in use decreases, causing a decrease in tension, the tape 10 has flown.

FIG. 3 shows a state in which the tape storage device of the present invention is applied to tape feeding of a hot stamping device. In the figure, 13 is a marking wheel, 14 is a marking suppressor, 15 is a receiving roller, 16 is a cable to be marked, 17 is a tension applying brake,
Reference numeral 18 indicates a driving motor for the marking wheel. The tape 10 for hot stamping has a thickness of lO~80〃 and a width of 1
0wn, the material is polyester, but before using the device of this invention, the cutting speed of the tape was 80 to 4 per minute.
The linear velocity could only be increased to about 0 m/min, but by using the device of this invention, it was possible to increase the linear velocity to over 200 m/min. Furthermore, this device ( ) # also has the feature that there is no need to separately drive the tape pad 8 to rotate in order to feed the tape.

As described in detail above, the tape storage device i, 0'' of the present invention does not have elements with mass and moment of inertia, such as a storage drum for storage or a movable sheave, unlike conventional devices. However, since it simply has a tape storage cavity and a fluid injection nozzle that forces and stores the tape into the cavity using gas pressure, only extremely small tension fluctuations occur when adjusting the tension, and as a result, there is a high risk of tape breakage.
This has the effect of allowing tapes to be fed at high speeds.

[Brief explanation of drawings]

Fig. 1 is a simplified plan view showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 8 shows a situation in which the inventive device is applied to a hot stamping device. 4(a) and 5(b) are simplified side views, and FIG. 5(a) is a simplified side view showing a typical example of a conventional striatal body storage device. (b) is a schematic diagram illustrating tension fluctuations during tension adjustment in the apparatus of FIGS. 4(a) and (b);
The figure is a similar view of the device of this invention. DESCRIPTION OF SYMBOLS 1...Substrate, 2...Lid plate, 3A, 3B...Tape guide plate, 4 Tape storage cavity, 5...Introduction side guide roller, 6.Output side guide roller, 7...Fluid injection nozzle, 8
Tape pad, 10... tape. Agent Patent Attorney Mamoru Shouchi Figure 1 Figure 2

Claims (1)

[Claims] Tape pad on the board surface of the substrate (1)? 8) Two tape guide plates (3A, 3B) having a height dimension (h) slightly larger than the width of the tape (10) to be fed out from the stone are provided in parallel with each other at a distance of A lid plate (2) is placed over these two tape guide plates (3A, 3B) to form a tape storage cavity (4) with a rectangular cross section, and the entrance of the tape storage cavity (4) is Air is emitted towards the back of the tape storage cavity (4).
A fluid injection nozzle (7) is disposed on both sides of the entrance of the tape storage cavity (4).
An introduction side guide roller (5) that guides the introduction of the tape (10) into the tape storage cavity (4) and a delivery side guide roller (5) that guides the delivery of the tape (10) from the tape storage cavity (4).
6) A storage device for tapes, characterized in that W is disposed therein.