JP2588292Y2 - Simple reel of packaging tape - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a take-up reel for a tape for packaging a component which can mainly store semiconductor electronic components, for example, chip capacitors and chip resistors, at a constant interval, and is mainly made of thin plastic. The present invention relates to an improvement of a simple reel which is formed by a sheet and whose shaft hole is reinforced by a plastic molded product made separately.

[0002]

2. Description of the Related Art Originally, reels of this kind are mainly made of cardboard or injection molded from a hard plastic material.
In recent years, simple reels that are inexpensive and suitable for disposable use by vacuum-forming thin plastic sheets have been widely used.

A simple reel made of the above-mentioned thin-walled plastic, which has been widely used in the past, has a half-split body in which the discs on both sides of the reel are vertically divided by a plastic sheet having a thickness of 0.5 to 0.8 mm. The reel body was formed by molding and bonding the two sheets appropriately.

[0004]

The simple reel obtained from the thin plastic sheet described above has a drive shaft at the center of the shaft portion and an engagement portion into which a locking piece protruding from the outer surface can be engaged. Although the shaft hole provided is provided through the shaft hole, the shaft hole, especially the engaging portion, receives a strong rotational torque of the locking piece when the drive shaft is started or stopped, and this portion is often deformed or deformed. There was a problem of damage.

[0005] On the other hand, as means for solving the above-mentioned problems, it has been necessary to vacuum form the entirety of a conventional simple reel using a relatively thick plastic sheet only to maintain the strength of the shaft hole. In addition, the periphery of the shaft hole must be reinforced with uneven ribs and the like, which has been a bottleneck in reducing the cost of the product.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and solves the problem of the strength of the shaft hole, which was a weak point of a simple reel made of a thin plastic sheet. It is intended to provide and enhance its use.

In order to achieve the above object, the present invention focuses on the fact that as a result of various experiments and studies, discs on both sides of this kind of simple reel are not required to have great strength.
0.2-0.3 of the half body of the reel body including the disc
A means of vacuum molding with a thin plastic sheet having a thickness of 1 mm, and a plastic core obtained separately by injection molding or the like is adhered or fitted to a shaft hole at the center thereof to reinforce it.

The core corresponds to the inner diameter of the shaft hole.
Shaped barrel, and a plurality of radially provided
The engaging piece is sandwiched between the half-pieces.
Hand to assemble half body and core by stopping
Steps were used .

Further, a through hole is provided in the engagement piece of the center core,
A convex column provided on the half body is fitted into the through hole to form the half body and the core.
Was used .

[0010]

According to the above-described simple reel structure of the present invention, the half body including the disk portion which does not require strength is vacuum-molded with an extremely thin plastic sheet, while the shaft hole portion which requires strength is separately provided. By reinforcing with a plastic-molded core, it has a special effect that the strength requirements of this kind of simple reel can be satisfied.

[0011] Means for clamping the engaging piece with the half body is adopted.
This allows for reliable assembly and
This will prevent the core from falling off during use. Further
In addition, the through hole provided in the engagement piece is fitted with the convex column of the half body.
Therefore, it exerts the function of dispersing the rotational torque of the core .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the simple reel of the present invention will be described in more detail below with reference to some embodiments shown in the drawings. As described above, the technical idea of the present invention is that a very thin plastic sheet is vacuum-formed. A separately molded core is adhered to the shaft hole or the peripheral edge of the reel body consisting of the two half bodies,
The embodiment of the present invention mainly resides in the shape and the fixing means of the core, because the reinforcing means is fitted or pinched, and the fixing means is particularly capable of preventing the core from coming off and stopping. For this purpose, the means may be variously modified. In this section, a typical form will be described.

First, in FIG. 1 and FIG.
A half of a reel including a half shaft portion 1d having a shaft hole 1c having three engagement portions 1b corresponding to a drive shaft and a locking piece (not shown) normally provided on the outer surface thereof at the center of the shaft a. The split body is formed by vacuum molding a polystyrene sheet having a thickness of, for example, 0.3 mm. In the figure, 1e is a stopper groove at the end of the packaging tape formed on the semi-axial portion 1d, 1f is a finger hole, 1g is a reinforcing rib that is concave or convex at an appropriate position of the disk portion 1a, and 1h is An end surface of the half shaft portion 1d, 1i is an inner bottom surface of the half shaft portion 1d formed smoothly, and 1j is a bent edge of a shaft hole 1c provided as needed.

FIG. 2 shows a reel body in which the end surfaces 1h of the half shaft portions 1d of these two half-pieces 1 are opposed to each other and connected by an adhesive or ultrasonic waves.

Next, the cores indicated by reference numerals 2 to 10 in FIG. 3 and thereafter are bonded so that their shaft holes 2c to 10c communicate with the shaft holes 1c of the half bodies 1.1 connected to each other. Each of the cores is preferably formed of the same kind of plastic material as the half body 1.

FIG. 3 shows a core 2 made of a plate-like polystyrene resin having a thickness of about 1 mm and formed into a shape as shown in FIG.
And is adhered to the inner bottom surface 1i or the outer surface of the half shaft portion in accordance with the shaft hole 1c.

Further, as shown by the dotted line in the figure, engaging pieces 2k are extended to two to four places on the outer peripheral edge of the core 2, and the bases of the corresponding half shafts 1d of the half body 1 corresponding thereto. By providing the recessed portion (undercut) 1k on the inner surface to enable the engagement piece 2k to be engaged, it is possible to position the shaft holes 1c and 2c and to prevent the center core 2 from coming off and rotating. ,
In this case, the desired reel can be obtained without the need to perform bonding.

FIG. 4 shows a modification of the above embodiment, in which the core 3 is bonded to the inner bottom surface 1i or the outer surface of the half shaft portion by aligning the shaft hole 3c with the shaft hole 1c of the half body 1.1. Alternatively, as shown by the dotted line in FIG.
The three engaging projections 1l are formed in a convex shape, and the shaft hole 1c is fitted into a fitting hole 31 provided through the corresponding position of the center core 3, thereby positioning the shaft holes 1c... 3c. And the core 3 can be prevented from coming off and stopping.

The core 4 shown in FIG. 5 is a plate-like polystyrene molded article molded in the shape shown in the figure, and has a depth half the thickness of the engaging piece 4m of the core 4 protruded on the outer periphery. The engaging piece 4m is sandwiched between the engaging steps 1m recessed along the inner edge of the upper surface of each half shaft portion 1d of the half body 1.1. By ultrasonic bonding, positioning of the shaft hole 4c and prevention of the core 4 from coming off and rotation are prevented.

The core 5 shown in FIG. 6 is a modification of the above-described embodiment shown in FIG.
c is a shaft cylinder 5n having the same shape, and an engagement piece 5m is provided on the surface of the shaft cylinder.
The reel body side has a half shaft portion 1d of both half bodies 1.1 corresponding to the width of each engagement piece 5m.
After being pinched by the engaging step 1m recessed along the inner edge of the upper surface of the, the end surface 1h of the semi-axial portion is joined with an adhesive, thereby positioning and preventing the shaft holes 1c and 5c from coming off. It was a stop. In this case, the center core 5 is formed by injection molding of the same polystyrene resin as the half body 1.1.

Further, FIG. 7 shows a reel body in which the peripheral edge of the shaft hole 1c of the half body 1.1 is a bent edge 1j which is folded inward, and an outer surface which can be fitted inside along the bent edge 1j. A core 6 having a shape, and both ends of which are formed in a shaft cylinder portion 6n having a length slightly exposed from the shaft holes 1c of the reel body. A blade 6m having a distance equal to the distance between the edges of the formed edges 1j is protruded.

When both ends of the shaft cylinder portion 6n of the core 6 are inserted into the shaft hole 1c of the half body 1.1 from the inside and the end faces 1h of the half bodies are joined to each other, the shaft hole 1c is The tightly fitted shaft cylinder portion 6n provides the positioning and the detent effect of the shaft holes 1c and 6c, and the wing plate 6m whose both ends abut against the edge of the bent edge 1j It is something that keeps you from falling out.

Further, FIG. 8 shows a reel body which is a bent edge 1j in which the periphery of the shaft hole 1c of the half body 1.1 is folded inward similarly to the above example. Inner bottom surfaces 1i, 1i of both halves 1.1 having an inner surface shape that can be fitted outside
The center core 7 having the shaft cylinder portion 7n equal to the distance (L) between the center core 7 and the bending edge 1j at which both ends of the center core are fitted. It was a deterrent. As shown by a dotted line in FIG.
Can be easily fitted to the bent edge 1j of the shaft hole 1c.

In this case, as shown in FIG. 9, an engaging hole 8p is provided on at least one side of the shaft cylinder portion 8n of the core 8.
While the auxiliary plate 8q functioning as a piece is integrally extended,
A convex column 1p in which the through hole 8p is fitted to the inner bottom surface 1i of the split body 1.
Is formed, especially around the axial hole 1c of the half body 1.
The effect of dispersing the rotational torque of the received core 8 can be obtained.
You.

The core of the simple reel of the present invention described above is based on the shaft hole 1c of the reel body which has been frequently used in the past. In the present invention, the shaft hole on the reel body side is modified. Is also effective, so one example is shown in FIG.
0, shown in FIG.

The core 9 shown in FIG. 10 is formed by integrally forming a cylindrical shaft hole 9n communicating with the shaft hole 9c of the flange plate on one side of a flange plate 9r having a regular shaft hole shape. Then, the cylindrical shaft hole 9n is press-fitted from outside to the shaft hole 1c on the main body side. Therefore, the shaft hole 1c on the main body side is made to match the outer shape of the cylindrical shaft hole 9n of the core 9 in advance. Also, in this case, after the above-mentioned center core 9 is fitted, both cylindrical shaft holes 9n and 9
It is even better if the n-end is close inside.
If an adhesive is applied to the inner surface of the flange plate 9r and adhered to the outer surface of the main body side shaft hole 1c, the retaining effect is further improved.

The core 10 shown in FIG. 11 has a rectangular outer shape because of the necessity of preventing rotation, and has a predetermined shaft hole 10c formed in the center thereof and a narrow groove 10s formed in the outer peripheral edge. It was done. On the other hand, a square hole 1s having a shape corresponding to the core 10 is formed through the inner bottom surface 1i of the half body 1 so that it can be fitted into the narrow groove 10s of the core.

The cores 9 and 10 shown in FIGS. 10 and 11 can be mounted before and after the two half-pieces 1.1 are joined.

As described above, each of the cores 2 to 4 shown in FIGS.
Is made by punching an existing hard plastic plate such as polystyrene or by injection molding into a plate shape with an appropriate plastic material, thereby partially cutting the inner bottom surface 1i around the shaft hole 1c of the half body. 6 to 11 in the shape shown in FIGS.
10 is to be manufactured by injection molding,
Except for the core 10, the purpose is to reinforce the entire shaft hole.

In each of the above embodiments, the half body 1
1 and the cores 2 to 10 are all described as polystyrene moldings. However, the present invention does not limit the material to polystyrene. -Individual coloring such as yellow, black, etc. is also free.

[0031]

Advantages of the Invention The simple reel of the present invention, which has been described in detail above, does not require uneven ribs for reinforcing the periphery of the shaft hole as compared with the conventional simple reel of this type, and the inner bottom surface can be formed smoothly. This facilitates the production of a mold for molding the body, which, together with the reduction of the thickness of the plastic sheet due to the use of the core, can greatly improve the molding effect and production cost.

Although it is not an essential requirement of the present invention to manufacture the half body and the core with the same plastic material, this provides a great advantage in recycling used reels. .

[0033]

In short, the simple reel of the packaging tape according to the present invention occupies a large part of the structure, but has a disk portion which does not essentially require strength, and a shaft hole portion which requires strength is formed as separate members. As a result, it is possible to obtain not only a lightweight and inexpensive simple reel that can provide a durable strength that can be repeatedly used, but also to expect more economical and practical effects than conventional simple reels of this kind. This is a very useful idea.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the inside of a half body with a bird's-eye view.

FIG. 2 is a front view of a reel body connected to a half body.

FIG. 3A is a perspective view showing each embodiment of a core, and FIG.
Is an explanatory view showing the state where each core is attached to the shaft hole of the reel body

FIG. 4 is the same as FIG.

FIG. 5 is the same as FIG. 3

FIG. 6 Same as FIG.

FIG. 7 is the same as FIG. 3

FIG. 8 is the same as FIG. 3

FIG. 9 is the same as FIG. 3

FIG. 10 is the same as FIG.

FIG. 11 is the same as FIG. 3

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Half body 1c Half hole of half body 2-10 Medium core 2c-10c Center hole of core

Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 75/00-75/32

Claims (2)

(57) [Scope of request for utility model registration] While the 1. A reel body having a disk portion on opposite sides of the shaft portion vertically divided into the halves were vacuum molded by thin plastic sheet, a shaft hole portion of the center were obtained separately by injection molding or the like A simple reel reinforced with a core, wherein the core is
Is a shaft cylinder having a shape corresponding to the inner diameter of the shaft hole, and
A plurality of engagement pieces provided radially from
A simple reel for packaging tape , wherein a piece is sandwiched between said half-split bodies . 2. A through hole is provided in each engagement piece, and
The half pillar and the core are fitted by fitting the convex columns provided in the split into the through holes.
A simple reel of the packaging tape according to claim 1 assembled .