JPH065932U - Interdental brush mold equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to easily and accurately supply and position the brush part in the mold, and to eliminate the occurrence of defective products due to bending of the brush part. Of. [Structure] In order to support a brush portion 9 of an interdental brush B, one of the injection molding dies is provided with a support portion 5 having inclined guide lines 15 arranged in a substantially V shape so as to face each other. At the same time, the handle portion forming cavity 6 is provided continuously to the support portion 5, and the stopper 7 is provided on the tip side of the support portion 5.
Is fixed, and the other mold is provided with a pressing portion 11 for pressing the brush portion 9 mounted on the support portion 5 and for sandwiching the neck portion 10 of the brush portion 9, and forming a cavity for the one die. It is provided with another cavity 13 for closing or a lid.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an interdental brush molding die device capable of manufacturing an interdental brush by injection molding.

[0002]

[Prior art]

 The conventional interdental brush molding die unit consists of a lower die and an upper die, and a slight gap is created between these dies, and the brush part is forcibly inserted from this gap to position between the dies. After that, the mold is closed and injection molding is performed to manufacture the interdental brush.

[0003]

[Problems to be solved by the device]

 However, in the conventional method, the brush portion is forcibly inserted from the gap between the lower mold and the upper mold to supply, so that accurate positioning of the brush portion requires skill, and It takes a very long time, and there is a problem in that the brush part is bent due to a mistake in work, resulting in defective products.

Therefore, the present invention can easily and accurately supply and position the brush portion into the mold, and can eliminate the occurrence of defective products due to bending of the brush portion. It is intended to provide a mold device for forming an interdental brush that can be used.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, one of the injection molding dies is provided with a support portion having inclined guide lines arranged in a substantially V shape so as to face each other in order to support the brush portion of the indental brush. A cavity for molding the handle portion is continuously provided on the support portion, and a stopper is fixed on the tip side of the support portion, and the brush portion mounted on the support portion is pressed against the other mold. A pressing portion that holds the neck portion of the brush portion is provided, and another cavity or lid that closes the cavity of one mold is provided.

Further, in order to achieve the effect described later, it is preferable to use, as the supporting portion, a plurality of plate pieces that are erected on the surface of one of the molds and are provided with a V-shaped notch portion that opens upward.

Further, as the pressing portion, one that moves the plate-shaped pressing portion from above into the gap between the V-shaped support portion and the cavity and presses and clamps it may be used.

[0008]

[Action]

 As described above, according to the mold apparatus for forming an interdental brush of the present invention, the brush portions are opposed to each other and the substantially V-shape while the tips of the opened molds are in contact with the stoppers. When the brush part is placed inside the inclined guide line that is placed on the other side and the other mold is closed, the brush part is pressed by the pressing part and the neck part of the brush part is clamped for positioning. The interdental brush is manufactured by injecting synthetic resin into the cavity and performing injection molding.

Next, as the supporting portion, when a plurality of plate pieces provided upright on the surface of one die is provided with a V-shaped notch opened upward, the other die is used. When closed, the brush portion is pressed by the pressing portion, and the neck portion of the brush portion is clamped between the V-shaped notch portion and the pressing portion.

In the case where a pressing portion is used that moves the plate-shaped pressing portion from above into the gap between the V-shaped supporting portion and the cavity and clamps it, a gap between the V-shaped supporting portion and the cavity is used. In the portion, the brush portion is pressed and sandwiched by the plate-shaped pressing portion.

[0011]

【Example】

 The details of the present invention will be described with reference to further illustrated embodiments. 1 and 2 shows a mold apparatus A for forming an interdental brush according to a typical embodiment of the present invention.

The interdental brush molding die apparatus A is composed of an upper die 1 and a lower die 2 as shown in FIG.

First, as shown in FIGS. 1 and 2, the lower mold 2 has three or more plate pieces 4 each having a V-shaped notch 3 opened upwards and arranged in parallel so as to face each other. A support portion 5 is formed upright from the surface, a handle portion forming cavity 6 is provided continuously to the support portion 5, and a stopper 7 is fixed to the tip of the support portion 5.

Next, as shown in FIG. 2, the upper die 1 is moved from above into the plate piece 4 and the plate piece 4, that is, the gap portion 8 between the support portion 5 and the cavity 6 and placed on the support portion 5. A plate-shaped pressing portion 11 for pressing the formed brush portion 9 and sandwiching the neck portion 10 of the brush portion 9 is provided upright, and a handle portion forming cavity 12 is provided on the base end side of the pressing portion 11.

Further, the pressing portion 11 shown in FIG. 1 uses a plate body. However, for example, when the V-shaped cutout 13 is provided so as to open downward, the cutout 13 and the support portion are formed. The neck portion 10 of the brush portion 9 can be reliably clamped by the V-shaped notch portion 5 of FIG.

The supporting portion 5 is not limited to the one in which the V-shaped notch 3 is provided above as shown in FIG. 1, and the V-shaped notch 3 is provided from above the plate piece 4 as shown in FIG. The guide slits 14 may be provided, and the guide slits 14 may be continuously formed. Further, as shown in FIG. It may have an inclined guide line 15 described above. In addition, it is also possible to employ the support portion 5 in which one plate piece 4 having an increased thickness is positioned and supported at substantially the center of the brush portion 9.

Further, in the apparatus A of FIG. 2, the supporting portion 5 is provided on the lower mold 2 and the pressing portion 11 is provided on the upper mold 1, but it is also possible to mount them in reverse. In the device A, the molds 1 and 2 are divided into upper and lower halves, but the mold may be divided into two halves on the left and right.

Thus, according to the mold apparatus A for forming an interdental brush of the representative embodiment of the present invention, as shown in FIGS. 1 and 2 (a), the front end of the stopper 7 in the lower mold 2 is connected. When the upper mold 1 is closed by placing the brush portion 9 in the V-shaped notch portion 3 of the support portion 5 while abutting against, the brush portion 9 is pressed by the pressing portion 11, and The neck portion 10 of the brush portion 9 is clamped and positioned, and a synthetic resin is injected into the cavities 6 and 12 and injection molding is performed, whereby the interdental brush B shown in FIG. 7 is manufactured. In this interdental brush B, as shown in FIG. 7, a brim portion 17 which can be engaged with an open end of a holder (not shown) is provided in the middle of the handle portion 16, and a brush portion 9 is provided at the tip. is there. Further, in the case of actual manufacturing, injection molding is performed using a lower mold 2 and an upper mold 1 (not shown) on which a total of eight internal brushes B are molded as shown in FIG.

As described above, according to the mold apparatus A for forming an interdental brush of the representative embodiment of the present invention, the tip is attached to the stopper 7 in the lower mold 2 as shown in FIGS. 1 and 2A. The brush part 9 is placed in the V-shaped notch 3 ... of the support part 5 while abutting against each other, and when the upper mold 1 is closed, the brush part 9 is pressed by the pressing part 11 and the Since the neck portion 10 of the shear portion 9 is clamped and positioned, it is possible to easily and accurately supply and position the brush portion 9 into the molds 1 and 2, and also to bend the brush portion 9. This makes it possible to eliminate the occurrence of defective products.

[0020]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. According to the interdental brush of claim 1, the brush is provided in the inclined guide wire in which the brush portions are arranged in a substantially V-shape so as to face each other of the support portion while the tip end is brought into contact with the stopper of the opened mold. When the part is placed and the other mold is closed, the brush part is pressed by the pressing part and the neck part of the brush part is clamped for positioning, so that the brush part is supplied to the mold part. Moreover, the positioning can be performed easily and accurately, and the generation of defective products due to bending of the brush portion can be eliminated.

According to the interdental brush of claim 2, when the other mold is closed, the brush part is pressed by the pressing part, and the neck part of the brush part is between the V-shaped notch part and the pressing part. Since it is clamped, when the other mold is closed, the brush portion is reliably pressed and clamped without shifting the position.

Also in the interdental brush of claim 3, since the brush portion is pressed and sandwiched by the plate-shaped pressing portion in the gap between the V-shaped support portion and the cavity, the brush portion of the brush portion is closed when the other mold is closed. The position is not deviated and it is reliably pressed and pinched.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a mold device for forming an interdental brush.

FIG. 2 is a vertical sectional view showing the same operation state.

FIG. 3 is a plan view of one of the molds which is an implementation product.

FIG. 4 is a perspective view showing a usage state when the pressing portion of the second embodiment is used.

FIG. 5 is a front view of a supporting portion according to a second embodiment.

FIG. 6 is a front view of a supporting portion according to a third embodiment.

FIG. 7 is a perspective view of an interdental brush.

[Explanation of symbols]

 A Interdental brush molding die device B Interdental brush 1 Upper die 2 Lower die 3 V-shaped notch 4 Plate piece 5 Support portion 6 Handle forming cavity 7 Stopper 8 Gap portion 9 Brush portion 10 Neck portion 11 Pressing part 12 Handle forming cavity 13 Notch 14 Guide slit 15 Inclined guide wire 16 Handle 17 Collar

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B29L 31:42 4F

Claims (3)

[Scope of utility model registration request] 1. One of the injection molding dies is provided with a support portion having inclined guide lines arranged in a substantially V shape so as to face each other in order to support the brush portion of the interdental brush. A cavity for forming a handle portion is continuously provided on the support portion, and a stopper is fixed on the tip side of the support portion, and the brush portion mounted on the support portion is pressed against the other mold while the brush portion of the brush portion is pressed. A mold apparatus for forming an interdental brush, which is provided with a pressing portion that holds the neck portion, and is provided with another cavity or a lid that closes the cavity of one mold. 2. The inter-dental brush molding according to claim 1, wherein the supporting portion is formed by providing a plurality of plate pieces erected on the surface of one of the molds with a V-shaped cutout opening upward. Mold equipment. 3. The mold device for forming an interdental brush according to claim 2, wherein the pressing portion is a pressing portion that moves a plate-shaped pressing portion from above into a gap between the V-shaped supporting portion and the cavity so as to clamp the pressing portion. .