JP2009148501A - Bristle-filling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bristle-filling apparatus stabilizing when filling a bristle tuft in a filling hole and capable of inexpensively manufacturing a brush by improving the durability of a bristle-filling needle. <P>SOLUTION: A bristle-filling head 3 which fills the bristle tuft B by folding the bristle tuft of a brush into two and driving a flat wire clamped therebetween in a bristle-filling hole 102 of the brush is provided with a guide groove 9 along its axial direction, the guide groove 9 is slidably engaged with the bristle-filling needle 8 which feeds the bristle tuft B double-folded by the flat wire H to the tip end 3a of the bristle-filling head 3, wherein the bristle-filling needle 8 has an elongated flat plate part 16 engaged with the guide groove 9, and a reinforcing rib 17 provided at least one face of the flat plate part 16 and the rib 17 is provided other than the tip end portion 16a of the flat plate part 16 which projects from the tip end 3a of the bristle-filling head 3 when the flat wire H is driven in the bristle tuft needle and is allowed to enter into the bristle-filling hole 102. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hair transplantation device for planting a hair bundle by folding a hair bundle of a brush in half and driving a flat wire sandwiched between the two into a flocking hole of a brush.

  Generally, a toothbrush is produced by planting a bristles of a brush sequentially in a plurality of flock holes provided side by side on a flock surface of a head portion. In addition, when a hair bundle is implanted in a flocking hole, a flocking device including a flocking head that is moved and moved in a direction in which the head portion can be moved toward and away from the flocking hole is used (for example, Patent Document 1). reference.).

  Specifically, this hair transplantation device folds the hair bundle delivered from the tip of the hair transplantation head in half, and inserts a retaining tool called a flat wire between them into the flocking hole to plant the hair bundle into the flocking hole. Set up. In addition, the hair transplantation head is provided with a guide groove along the axial direction thereof, and the hair bundle folded in half by the flat wire is pressed into the guide groove while pressing the flat wire. A flocking needle to be fed out to the section is slidably engaged.

  By the way, in recent years, in order to improve the function of the toothbrush, a hair bundle is attached to a flock hole (hole diameter of 1.0 mm or less) smaller than a conventional flock hole (hole diameter of about 1.7 to 2.3 mm). There has been proposed a toothbrush that has been implanted and further narrowed the interval (pitch) between adjacent flock holes (see, for example, Patent Documents 2 and 3).

  Here, when the diameter of the flocked hole is reduced and the interval between the flocked holes is narrowed, the flat line driven into the flocked hole is also reduced accordingly, and therefore the flocked needle that presses the flat line needs to be thin and thin. However, if the flocking needle is made thin and thin, the durability against impact or the like when a flat wire is driven into the flocking hole will be reduced.

Therefore, the durability of the flocking needle is an important factor not only in terms of productivity of the toothbrush using the flocking device described above and maintainability of the device itself, but also in terms of stabilizing the quality of the toothbrush. . For this reason, when manufacturing the toothbrush which reduced the diameter of the flock hole mentioned above and narrowed the space | interval, especially the high durability of the flocking needle is calculated | required.
JP 2000-93233 A JP 2004-121823 A JP 2005-177377 A

  The present invention has been proposed in view of such conventional circumstances, and by increasing the durability of the flocking needle, it is possible to stabilize the planting of the hair bundle in the flocked hole and to reduce the cost of the brush. An object of the present invention is to provide a flocking device that can be manufactured.

In order to achieve the above object, the present invention provides the following means.
(1) A flocking device that folds a bristle bundle of brushes and implants a bunch of hair by driving a flat wire sandwiched between them into a flocking hole of a brush,
A flocking head that is operated to move toward and away from the flock hole of the brush, a hair bundle supply mechanism that supplies a hair bundle to the flocking head, and a flat wire supply mechanism that supplies a flat line to the flocking head And
The flocking head is provided with a guide groove in the axial direction thereof, and a hair bundle that is folded in two by the flat line is pressed into the guide groove while pressing the flat line. The flocking needle to be fed to is slidably engaged,
The flocking needle has a long flat plate portion engaged with the guide groove, and a reinforcing rib provided on at least one surface of the flat plate portion,
The rib is provided excluding the tip portion of the flat plate portion that protrudes from the tip portion of the flocking head and is allowed to enter the flocking hole when the flat wire is driven into the flocking hole. Features a flocking device.
(2) When the length of the tip portion of the flat plate portion is L, the depth of the flocked hole is D, and the length of the flat wire is S, the relationship of L <DS is satisfied. The flocking device according to (1).
(3) The flocking device according to (1) or (2), wherein the rib is provided orthogonal to the flat plate portion along the axis of the flat plate portion.
(4) The flocking device according to any one of (1) to (3), wherein the rib has a tapered portion whose height gradually decreases at a tip portion thereof.
(5) The flocking device according to any one of (1) to (4), wherein the ribs are provided opposite to both surfaces of the flat plate portion.

  As described above, according to the present invention, the reinforcing ribs that increase the rigidity in the width direction and the thickness direction of the flocking needle are provided except for the tip portion of the flat plate portion. Therefore, in the flocking device according to the present invention, it is possible to improve the durability of the flocking needle against an impact or the like when a flat wire is driven into the flocking hole, and in particular, a brush with a reduced flocking hole diameter and a narrower interval. In the case of manufacturing the brush, it is possible to stabilize the planting of the hair bundle in the tuft hole and to manufacture the brush at a low cost.

Hereinafter, a flocking device to which the present invention is applied will be described in detail with reference to the drawings.
The flocking device to which the present invention is applied is a flat wire flocking machine 1 used for manufacturing a toothbrush 100 as shown in FIG.

  Although the toothbrush 100 is not particularly limited, the toothbrush 100 is generally provided with a head portion 101 at the tip of a brush handle 100A formed of a hard resin material, and a plurality of plants are formed on one surface (referred to as flocking surface) 101a of the head portion 101. The pores 102 are arranged side by side. The toothbrush 100 is manufactured by sequentially flocking the bristles B of the brush into the flocking hole 102 of the brush handle 100A.

  In the flat-wired hair transplanter 1 to which the present invention is applied, the bristle bundle B of the brush is folded in two into the flocked hole 102 of the brush handle 100A, and the bristle bundle B is implanted by driving the flat wire H sandwiched therebetween. To do.

  Specifically, the flat wire flocking machine 1 includes a brush holding mechanism 2 that holds the brush handle 100A, and a direction X that allows contact with and away from the flocking hole 102 of the brush handle 100A that is held by the brush holding mechanism 2. The hair transplantation head 3 that is moved and operated, the hair bundle supply mechanism 4 that supplies the hair bundle B to the hair transplantation head 3, and the flat wire supply mechanism 5 that supplies the flat wire H to the hair transplantation head 3 are provided.

  The brush holding mechanism 2 includes a fixing tool 6 for fixing the head part 101 of the brush handle 100A. While the flat hair transplanter 1 is planting the hair bundle B, the head part fixed to the fixing tool 6 is provided. The chuck mechanism 7 is configured to hold the brush handle 100A so that the position of 101 does not shift.

  The fixture 6 is disposed at a position facing the tip of the flocking head 3, and a positioning recess 6 a for positioning the head unit 101 is provided on the facing surface. The fixing tool 6 is attached to a moving table (not shown), and the moving table moves the fixing tool 6 in a direction orthogonal to the direction in which the flocking head 3 sends out the hair bundle B. Thereby, it is possible to plant the hair bundle B in any flock hole 102 to be flocked among the plurality of flock holes 102 while changing the position of the head portion 101 with respect to the flock head 3.

  In addition, in this invention, it is not restricted to the structure which moves the said fixing tool 6, but the head part fixed to the fixing tool 6 by operating the hair transplantation head 3 in the direction orthogonal to the direction which sends out the hair | bristle bundle B. It is good also as a structure which changes the position of the flocking head 3 with respect to 101. FIG.

  The flocking head 3 is made of a long member that is slidably supported in a direction X that can be brought into and out of contact with the flocking surface 101a of the head portion 101, and has a shape in which the distal end portion 3a becomes gradually thinner. . Further, the hair transplantation head 3 is provided with a guide groove 9 for slidably supporting the metal hair transplantation needle 8 in the axial direction. Furthermore, a slit 10 penetrating the side surface is provided in the midway portion of the flocking head 3.

  As shown in FIG. 2, the hair bundle guide groove 11 that guides the hair bundle B supplied from the hair bundle supply mechanism 4 and the flat wire supplied from the flat wire supply mechanism 5 are provided at the tip 3 a of the hair transplantation head 3. A flat guide groove 12 for guiding H is provided. And these guide grooves 11 and 12 are located on the extension line of the guide groove 9 in which the flocking needle 8 mentioned above is slid.

  The hair bundle supply mechanism 4 has a picker 13 that can enter the slit 10 from one side surface of the flocking head 3 while swinging in the Y direction shown in FIG. On the outer peripheral edge of the picker 13, a scraping groove 13a for scraping a predetermined number of hair bundles B from a hair bundle group B 'supplied on a hair dish (not shown) is formed. . Further, the guide member 14 along the outer peripheral edge of the picker 13 is arranged between the hair plate and the flocking head 3 so that the hair bundle B scraped off by the scraping groove 13a does not fall off from the scraping groove 13a. Is provided. Then, the hair bundle supply mechanism 4 causes the picker 13 to enter the slit 10 from one side surface of the flocking head 3 and supplies the hair bundle B scraped by the scraping groove 13 a to the hair bundle guide groove 11.

  The flat wire supply mechanism 5 supplies the belt-like flat wire H ′ wound around the reel 15 from the other side surface of the flocking head 3 and the tip of the supplied flat wire H ′ by a cutter (not shown). The flat wire H is cut into a predetermined length, and the cut flat wire H is supplied to the flat wire guide groove 12.

  In the flat wire flocking machine 1 having the above-described structure, the brush holding mechanism 2 holds the brush handle 100A and the head portion 101 is fixed to the fixture 6, and then the flocking head 3 is connected to the flocking surface 101a of the head portion 101. Move in the direction approaching. Then, the hair bundle B is sent out in a direction coinciding with the axis of the flocked hole 102 from a state where the tip 3a of the flocked head 3 is abutted against the flocked surface 101a of the head 101. That is, when the flocking needle 8 advances in the guide groove 9 toward the tip 3a of the flocking head 3, the flocking needle 8 presses the flat wire H supplied to the flat guide groove 12, and The hair bundle B supplied to the hair bundle guide groove 11 together with the line H is sent out to the tip portion 3 a of the flocking head 3. The hair bundle B fed from the tip 3a of the hair transplantation head 3 is folded in half by a flat wire H, and the flat wire H sandwiched therebetween is driven into the hair transplantation hole 102, thereby planting in the hair transplantation hole 102. Will be established.

  After the flocking, the flocking head 3 moves backward in a direction away from the head portion 101. Thereby, the hair | bristle bundle B is extracted from the front-end | tip part 3a of the flocking head 3, and returns to the position before flocking again. Then, in this flat wire flocking machine 1, by performing the flocking operation by the flocking head 3 as described above while changing the position of the head portion 101, the hair bundle with respect to the plurality of flocked holes 102 provided in the head portion 101. It is possible to plant B sequentially.

  By the way, in the flat wire flocking machine 1 to which the present invention is applied, as shown in FIGS. 2 and 3, reinforcing ribs 17 are provided on both surfaces of the flat plate portion 16 engaged with the guide groove 9 of the flocking needle 8. It becomes the composition.

  Specifically, the reinforcing rib 17 protrudes from the distal end portion 3a of the flocking head 3 when the flat wire H is driven into the flocked hole 102, and can be inserted into the flocked hole 102. It is provided except 16a. That is, the tip portion 16a of the flat plate portion 16 satisfies the relationship L <DS, where L is the length, D is the depth of the flocking hole 102, and S is the length of the flat wire H. Yes.

  The ribs 17 are provided opposite to each other on both sides of the flat plate portion 16 formed in a long shape with a constant width. The ribs 17 have a ridge at a constant height over the entire length excluding the tip portion 16a of the flat plate portion 16, and are provided orthogonal to the flat plate portion 16 along the axis of the flat plate portion 16. Yes. Therefore, the cross-sectional shape of the flocking needle 8 constituted by the flat plate portion 16 and the rib 17 has a so-called cross shape. And by having such a shape, the flocking needle 8 increases the rigidity in the width direction and the thickness direction, and ensures escape of the hair bundle B at the time of flocking.

  Furthermore, the rib 17 has a tapered portion 17a whose height gradually decreases at the tip portion. By providing such a taper portion 17a, the flocking needle 8 prevents the ribs 17 from interfering during flocking.

  On the other hand, the hair transplantation head 3 is provided with a guide groove 18 over which the rib 17 of the hair transplantation needle 8 is slidably engaged. The guide groove 18 is provided on both sides of the flat plate portion 16 so as to be orthogonal to the guide groove 9.

  As described above, in the flat wire flocking machine 1 to which the present invention is applied, the reinforcing ribs 17 for increasing the rigidity in the width direction and the thickness direction of the flocking needle 8 are provided except for the front end portion 16 a of the flat plate portion 16. . Therefore, in this flat wire transplanter 1, it is possible to improve the durability of the flocking needle 8 against an impact or the like when driving the flat wire H into the flocking hole 102.

  In particular, in this flat wire transplanter 1, when manufacturing the toothbrush 100 in which the diameter of the flock holes 102 is reduced (for example, the hole diameter is 1.0 mm or less) and the interval (pitch) is narrowed, the bristles B are inserted into the flock holes 102. It is possible to stabilize the planting. Therefore, when the flat wire flocking machine 1 is used, the toothbrush 100 can be manufactured stably and inexpensively.

In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, the flocking needle 8 has a configuration in which reinforcing ribs 17 are provided on both surfaces of the flat plate portion 16, but the present invention is not necessarily limited to such a configuration. Alternatively, a reinforcing rib 17 may be provided only on the surface.

  In addition, the present invention is not limited to the case where it is applied to the flat wire flocking machine 1 used for manufacturing the toothbrush 100, but the bristles of the brush are folded in half, and the flat wire sandwiched therebetween is driven into the flocked hole of the brush. Therefore, the present invention can be widely applied to a hair transplanting device for planting a hair bundle.

  Hereinafter, the effects of the present invention will be made clearer by examples. In addition, this invention is not limited to a following example, In the range which does not change the summary, it can change suitably and can implement.

In this example, toothbrushes having the specifications shown in Table 1 below were produced using the methods of Example 1 and Comparative Examples 1 and 2.
That is, in Example 1, using the flocking needle provided with the reinforcing rib of the present invention as the flocking needle of the flat wire flocking machine, the bristles of the brush are folded in two, and the flocked hole is sandwiched between the flat wires. Toothbrushes having the specifications shown in Table 1 were produced by a flat wire flocking method.
On the other hand, in Comparative Example 1, using a conventional flocking needle without a rib for the flocking needle of the flat wire flocking machine, the bristles of the brush are folded in half, and a flat wire is sandwiched between the flocks and the flocking hole is planted. The toothbrush of the specification shown in Table 1 was produced by the flat wire flocking method.
On the other hand, in the comparative example 2, the toothbrush of the specification shown in Table 1 was produced by the heat sealing | fusion method which press-fits and fixes the lower end of a bristle bundle in the molten resin used as a head part.

And, when producing a toothbrush using the methods of Example 1 and Comparative Examples 1 and 2, “Durability of flocking needle”, “Stability of product quality”, “Capital investment”, “Production capacity”, and These “overall evaluations” were conducted. The evaluation results are shown in Table 2.
For each evaluation, ○ is “good”, Δ is “neither”, and x is “not good”. For “durability of flocking needle”, only Example 1 and Comparative Example 1 were evaluated, “10000 shots or more” was evaluated as “◯”, “1000 to 10,000 shots” as “Δ”, and “1000 shots or less” as “X”. .

As shown in Table 2, in Example 1, good results were obtained for all evaluations of durability of the flocking needle, stability of product quality, capital investment, and production capacity. It was.
On the other hand, in Comparative Example 1, the evaluation of the durability of the flocking needle and the stability of the product quality was bad, and good results were not obtained for the comprehensive evaluation.
On the other hand, in Comparative Example 2, capital investment is required, and the productivity is inferior to that in the case where the flat wire flocking method is used. Therefore, better results than in Example 1 were not obtained for comprehensive evaluation.

  From the above, according to the present invention, when manufacturing a toothbrush in which the diameter of the flock holes is reduced and the interval between them is reduced, the toothbrush can be manufactured stably and inexpensively.

FIG. 1 is a perspective view showing an example of a flat wire transplanter to which the present invention is applied. FIG. 2 shows the flocking head, (a) is a horizontal sectional view thereof, (b) is a vertical sectional view thereof, and (c) is a front view as seen from the tip end side thereof. FIG. FIG. 3 shows a flocking needle, (a) is a plan view thereof, (b) is a side view thereof, and (c) is a front view thereof.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Flat wire flocking machine (flocking device) 2 ... Brush holding mechanism 3 ... Flocking head 4 ... Hair bundle supply mechanism 5 ... Flat wire supply mechanism 6 ... Fixing tool 7 ... Chuck mechanism 8 ... Flocking needle 9 ... Guide groove 10 ... Slit DESCRIPTION OF SYMBOLS 11 ... Hair bundle guide groove 12 ... Flat wire guide groove 13 ... Picker 13a ... Scraping groove 14 ... Guide member 15 ... Reel 16 ... Flat plate part 16a ... Tip part 17 ... Rib 17a ... Tapered part 18 ... Guide groove

Claims (5)

A flocking device that folds a bristle bundle of brushes and implants the bristles by driving a flat wire sandwiched between them into a flocking hole of a brush,
A flocking head that is operated to move toward and away from the flock hole of the brush, a hair bundle supply mechanism that supplies a hair bundle to the flocking head, and a flat wire supply mechanism that supplies a flat line to the flocking head And
The flocking head is provided with a guide groove in the axial direction thereof, and a hair bundle that is folded in two by the flat line is pressed into the guide groove while pressing the flat line. The flocking needle to be fed to is slidably engaged,
The flocking needle has a long flat plate portion engaged with the guide groove, and a reinforcing rib provided on at least one surface of the flat plate portion,
The rib is provided except for a tip portion of the flat plate portion that protrudes from a tip portion of the flocking head and is allowed to enter the flocking hole when the flat wire is driven into the flocking hole. Features a flocking device.   The relationship of L <DS is satisfied, where L is the length of the tip of the flat plate portion, D is the depth of the flocked hole, and S is the length of the flat wire. Item 1. The hair transplanting apparatus according to item 1.   The hair transplantation device according to claim 1 or 2, wherein the rib is provided orthogonal to the flat plate portion along an axis of the flat plate portion.   The said rib has a taper part which becomes gradually low in the front-end | tip part, The hair transplantation apparatus as described in any one of Claims 1-3 characterized by the above-mentioned.   The said rib is provided so as to oppose both surfaces of the said flat plate part, The flocking apparatus as described in any one of Claims 1-4 characterized by the above-mentioned.

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