JP2000281068A - Handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely separate a handle comprising a grip portion and a fitting arm projecting in the horizontal direction from upper and lower portions thereof by setting the peripheral width of a center portion of the grip portion to be smaller than the width in the vertical direction to generate a gap in the center portion of the adjacent handle when handles are arranged in a butted manner during the conveyance. SOLUTION: In a handle 3 comprising a grip portion 31 and a plurality of fitting arms 32, 33 projecting in the horizontal direction from upper and lower portions thereof, the width C of the periphery of a center portion of the grip portion 31 is set to be smaller than the upper and lower widths D1, D2. When the upper and lower sides of the handles 3 are arranged in a butted manner when the handles 3 are conveyed, a clearance is generated in the vicinity of the center portion of the adjacent handles 3. Since a blade of a narrow screw at the tip of a separating device can be smoothly inserted in the clearance in the vicinity of the center portion, the handles 3 can surely be separated. The whole handle 3 is formed of H-shaped structure in section by connecting an inner plate 51 to an outer plate 52 through a center longitudinal rib 53.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle attached to a bottle body.

[0002]

2. Description of the Related Art In recent years, bottles made of plastics such as polyester resin represented by polyethylene terephthalate, which is lighter and more impact-resistant than glass,
A plastic bottle with a handle attached to a separate handle is put to practical use. In particular, a grip portion and a mounting arm projecting laterally from upper and lower ends of the grip portion into a grip mounting recess formed on the side surface of the bottle body. A plastic bottle with a handle, which is attached to a handle provided with a handle such that the end of the mounting arm is embedded in a wall in the recess for mounting the handle, is commercially available.

[0003] As shown in a side view, partly cut away, of this plastic bottle with a handle, a separate handle 3 is attached in advance to a mounting arm 32, in a blow molding die.
33 is set so as to protrude into the blow molding die, and the bottle body 1 is blow molded in the blow molding die, and at the same time, the mounting arm 3 is attached by the bottle wall 20.
It is manufactured by a method in which the ends of the 2, 33 are wrapped and integrated. Projecting pieces 320, 330 are formed outward at the ends of the mounting arms 32, 33, and the projecting pieces 320, 330 also function as retaining pieces by being embedded in the bottle wall 20.

[0004] When the handle 3 for manufacturing the plastic bottle with a handle in this manner is conveyed to a blow molding die, for example, as shown in FIG. It is necessary to separate a large number of grips that are arranged side by side on the transfer rail 70, collide against each other, are pressed and conveyed, and are arranged in front of the blow molding die. In this case, there is a problem that the blade 7 at the tip of the screw hits the grip portion of the handle, and it cannot be smoothly separated.

[0005] In a handle molded by an injection molding machine, the eject mechanism of the injection molding machine is provided on the opposite side (usually a movable type) of the gate, so that the handle, which is a molded product, is movable on the opposite side of the gate. Although it is necessary to stably remain in the mold, there is a problem that the handle body is easily removed from the movable mold, and it is difficult to perform the discharge processing using the eject pin.

In the case of a handle having an H-shaped cross section in which an inner plate and an outer plate are connected by a central longitudinal rib for weight reduction, a plastic bottle with a handle formed by a blow molding machine is also discharged. Since the gap between the inner plate and the outer plate of the handle is recessed and deepened, it is necessary to take a large stroke of the eject pin abutting on the central vertical rib, and there is a problem that the discharging process is difficult to perform.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a new handle which solves the above-mentioned problems.

[0008]

The above object is achieved by the following means. That is, according to the present invention, in a handle provided with a grip portion and an attachment arm projecting laterally from upper and lower portions of the grip portion, a width around a central portion of the grip portion is smaller than a vertical width of the grip portion. The present invention also proposes a handle characterized in that the handle has an H-shaped cross section in which an inner plate and an outer plate are connected by a center longitudinal rib. The present invention proposes a handle having a trace of a gate for use and having, on the opposite side, a reinforcing rib formed over the central longitudinal rib, the inner plate and the outer plate.

According to the present invention, in a handle having a grip portion and a mounting arm projecting laterally from upper and lower portions of the grip portion, the width of the central portion of the grip portion is larger than the vertical width of the grip portion. Since the handle is characterized by being set small,
In the process of transporting the handle, a gap is created at the center of the grip part of the adjacent handle when aligned so that the upper and lower sides of the handle are attached to each other, so when separating them one by one and sending them to the next process In addition, the blade at the tip of the screw of the separation device can enter the gap at the central portion to reliably perform the separation.

In a handle having an H-shaped cross section in which an inner plate and an outer plate are connected by a central vertical rib, a gate trace for injection molding is provided on one side of the central vertical rib, and on the opposite side, Since the handle has a reinforcing rib formed over the central longitudinal rib, the inner plate and the outer plate, one side of the central longitudinal rib is located between the inner plate and the outer plate. In the recessed position, the injection molding gate trace is not conspicuous, and the central longitudinal rib has a reinforcing rib on the side opposite to the injection molding gate trace, so when removing the mold after injection molding, The reinforcing ribs serve as pull-out resistances, remain stably on the mold on the side opposite to the gate, and can be easily discharged by the eject pins.

If this reinforcing rib is formed at a position corresponding to the eject pin on the side opposite to the gate, it can be used as a contact point of the eject pin at the time of injection molding or at the same time as being integrated with the main body at the same time as blow molding. Since the eject pin does not need to correspond to the recessed position between the inner plate and the outer plate of the handle, the stroke is small and installation is easy.

When the reinforcing rib is formed on the injection molding gate mark or on the side opposite to the periphery thereof, even with a transparent handle, the whitening phenomenon that is likely to occur near the gate during injection molding due to the irregular reflection of the reinforcing rib. It has the effect of being less noticeable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 (a) is a front view of the handle of the present invention, FIG. 1 (b) is a side view of FIG. 1 (a), FIG. 1 (c) is a bottom view of FIG. 1 (b), and FIG. It is a side view which shows an example of the separation process of the handle of FIG.

The handle of the present invention has a grip 3 as shown in FIG.
1 and a handle 3 having attachment arms 32 and 33 projecting laterally from upper and lower portions of the grip portion 31, the width C around the central portion of the grip portion 31 is set to the vertical width D 1 of the grip portion 31. , D2 is smaller than the width of the handle.

In the step of transporting the handle 3 by setting the width D around the central portion of the grip portion 31 to be smaller than the widths D1 and D2 of the upper and lower portions of the grip portion 31 as described above,
When the handle 3 is aligned so that the upper and lower side surfaces are in contact with each other, a gap is generated around the central portion of the adjacent handle 3,
If you want to cut this one by one and send it to the next process,
The blade of the narrow screw 7 at the distal end of the separating device as shown in FIG. 2 can enter the gap around the central portion to reliably perform the separating. As shown in FIG. 1, the handle of the present example has a locking portion 4 that protrudes upward or in the width direction at the tip of mounting arms 32 and 33 that protrude laterally from upper and lower portions of a grip portion 31. In the blow molding step, it is preferable that the locking portion 4 is wrapped around the bottle wall so as to be integrated, but the present invention is not limited to this.

FIG. 3A is a front view of a handle showing another example of the present invention, FIG. 3B is a side view of FIG. 3A, and FIG.
FIG. 3B is a bottom view of FIG.

As shown in FIG. 3, the handle according to the second aspect of the present invention is a handle 3 having an H-shaped cross section connected to an inner plate 51, an outer plate 52, and a central longitudinal rib 53. Having a gate mark 8 for injection molding on one side,
On the opposite side, a reinforcing rib 6 formed over the central longitudinal rib 53, the inner plate 51, and the outer plate 52 is provided.

The reinforcing rib 6 is located on one lower side of the central longitudinal rib 53 opposite to the surface of the central longitudinal rib 53 where the gate 8 for injection molding is located, and corresponds to an eject pin of an injection molding machine or a blow molding machine. In a position where

As shown in FIG. 3, the handle of this embodiment includes a grip portion 31 and mounting arms 32 and 33 projecting laterally from upper and lower portions of the grip portion 31.
An engaging portion 4 projecting upward or in the width direction or the like is formed at the tip of each of the bottles 2 and 33. In the blow molding process, the engaging portion 4 is wrapped around the bottle wall so that the bottles can be integrated. However, the present invention is not limited to this.

The grip 31 of the handle 3 is connected to the inner plate 51.
Cross section H connecting the outer plate 52 and the outer plate 52 by a central rib 53
The inner plate 5 is formed as shown in FIG.
1 and the non-slip irregularities 9 only on both side edges of the outer plate 52.
Is provided, in addition to the flexibility of the H-shaped cross-section structure itself, the uneven portions 9 are formed only near the side edges to create subtle softness on the inner plate 51 and the outer plate 52. Most of the central portion except for the vicinity of the portion is preferably finished smoothly, so that the unevenness 9 exerts a non-slip effect without impairing the overall feel.

In the present invention, since the injection molding gate mark 8 is formed on one side of the central vertical rib 53 constituting the H-shaped structure in cross section, one side of the central vertical rib 53 is provided with the inner plate 51 and the outer plate 52. The injection molding gate mark 8 is extremely inconspicuous in the recessed position between
3 has a reinforcing rib 6 on the side opposite to the injection molding gate mark 8, so that at the time of die cutting after injection molding, the reinforcing rib 6 becomes a drawing resistance and is formed into a die opposite to the gate. The handle 3 remains stably, and the ejection process by the eject pin is extremely easy.

If the reinforcing rib 6 is located at a position corresponding to the eject pin on the side opposite to the gate, the reinforcing rib 6 serves as a contact point of the eject pin when integrated with the bottle body 1 at the time of injection molding or blow molding. Since the top surface of the reinforcing rib 6 can be used and the eject pin does not need to correspond to the recessed position between the inner plate 51 and the outer plate 52 of the handle, the stroke of the eject pin is short and easy to install. is there.

In the present invention, as shown in FIG. 1 and FIG. 3, the inner plate 51 and the outer plate 52 are positioned at the center of the upper and lower mounting arms 32 and 33 up to the vicinity of the tip surfaces (at positions 4 mm or less from the tip surfaces). It is preferable that a cross section perpendicular to the length direction, which is a cross section connected by the rib 53, has an H-shaped structure.

In order to obtain sufficient strength without using the H-shaped structure, it is necessary to increase the thickness accordingly, and if the thickness is increased, the cooling during injection molding of the handle is required. This is because, due to shrinkage in the process, dents (also referred to as sink marks) are likely to occur particularly at the tip end surface of the locking portion 4, and when the structure is H-shaped, the sink marks are less likely to occur and are inconspicuous.

In order to manufacture the handle 3, an injection mold (not shown) which is composed of a movable mold and a fixed mold and which can be divided from a portion corresponding to the center of the handle 3 is used. However, the grip portion 31, the lower mounting arm 33, and the like connect the inner plate 51 and the outer plate 52 to
If the cross-section perpendicular to the length direction, which is the cross-section connected by 3, has an H-shaped structure, there is no undercut portion which becomes resistant to the direction of splitting the injection mold and the direction of pulling out the product handle 3, There is also an advantage that the step of taking out the product handle body 3 by dividing both molds becomes easy.

The bottle body of the present invention uses a plastic, for example, a polyester resin represented by polyethylene terephthalate to first form an intermediate product, a tubular material (referred to as a preform), by injection molding. The preform is set in a blow molding mold while being heated to a stretching temperature, for example, in the case of polyethylene terephthalate at 90 to 120 ° C., and biaxially stretch blow molded by blowing high-pressure air or the like into the preform.

In the present invention, the handle may be made of polyester resin represented by polyethylene terephthalate, polypropylene, polyethylene or the like.

In particular, if the same polyester resin as that of the bottle body is used as the material of the handle, it can be processed together with the body when it is collected and recycled, and recycled resin can be used as the handle. It is preferred.

In order to attach the handle of the present invention to the bottle body, for example, a separate handle is previously inserted into a blow mold so that the end of the mounting arm projects into the blow mold. Preferably, the bottle body is blow-molded in the blow-molding mold, and at the same time, the method is integrated so as to wrap the end of the mounting arm with the expanding bottle wall. , But is not limited to this.

[0030]

According to the present invention, in a handle having a grip portion and an attachment arm projecting laterally from upper and lower portions of the grip portion, the width of the central portion of the grip portion is changed to the width of the upper and lower sides of the grip portion. Since the handle is characterized by being set smaller than
In the process of transporting the handles, a gap is formed at the center of the adjacent handles when the handles are aligned so that the upper and lower sides of the handles are applied to each other. Therefore, when separating the handles one by one and sending them to the next process, a separating device is used. Can enter the gap at the central portion and can be reliably separated.

Also, in the handle having an H-shaped cross section in which the inner plate and the outer plate are connected by a central vertical rib, a gate mark for injection molding is provided on one side of the central vertical rib, and on the opposite side, Since the handle is characterized by having a reinforcing rib formed over the central longitudinal rib, the inner plate and the outer plate, one side of the central longitudinal rib is located between the inner plate and the outer plate. In the recessed position, the injection molding gate trace is not conspicuous, and the central longitudinal rib has a reinforcing rib on the side opposite to the injection molding gate trace, so when removing the mold after injection molding, The reinforcing ribs serve as pull-out resistances, remain stably on the mold on the side opposite to the gate, and can be easily discharged by the eject pins.

If the reinforcing rib is formed at a position corresponding to the eject pin on the opposite side of the gate, the eject pin abuts at the time of injection molding or at the same time as being integrated with the main body at the same time as blow molding. Since the eject pin does not need to correspond to the recessed position between the inner plate and the outer plate of the handle, the stroke is short and installation is easy.

When the reinforcing rib is formed on the injection molding gate mark or on the opposite side surface of the periphery thereof, even with a transparent handle, the whitening phenomenon which is likely to occur near the gate during injection molding due to irregular reflection of the reinforcing rib is caused. It has the effect of being less noticeable.

[Brief description of the drawings]

1 (a) is a front view showing an example of a handle of the present invention, FIG. 1 (b) is a side view of FIG. 1 (a), and FIG. 1 (c) is a bottom view of FIG. 1 (b). It is.

FIG. 2 is a side view showing an example of a handle separating device.

3 (a) is a front view showing another example of the handle of the present invention, FIG. 3 (b) is a side view of FIG. 3 (a), and FIG. 3 (c) is a view of FIG. 3 (b). It is a bottom view.

FIG. 4 is a partially cutaway side view of a conventional plastic bottle with a handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottle main body 3 Handle 4 Locking part 6 Reinforcement rib 7 Screw 8 Gate mark 9 Unevenness part 31 Grip part 32 Upper mounting arm 33 Lower mounting arm 51 Inner plate 52 Outer plate 53 Central vertical rib

Claims (2)

[Claims] 1. A handle having a grip portion and a mounting arm projecting laterally from upper and lower portions of the grip portion, wherein a width around a central portion of the grip portion is smaller than a vertical width of the grip portion. A handle that has been set. 2. A handle having an H-shaped cross section in which an inner plate and an outer plate are connected by a central longitudinal rib, wherein the central longitudinal rib has an injection molding gate mark on one side and an opposite side has A handle having a reinforcing rib formed over the central longitudinal rib, the inner plate and the outer plate.