JP6182203B2 - Toothbrush manufacturing method and toothbrush - Google Patents

Description

  The present invention relates to a method for manufacturing a toothbrush and a toothbrush.

  The conventional method of manufacturing a toothbrush using the flat wire flocking method is to first form the handle part in the injection molding process, then set the handle one by one in the flocking process and then use it for the handle. Hair is planted. For example, Patent Document 1 discloses a method for manufacturing a toothbrush using such an injection molding process.

JP-A-5-309017

  On the other hand, as aging progresses in recent years, interest in dental health has increased, and it is encouraged to maintain dental health by brushing appropriately. However, for toothbrushes, elaborate ones such as decorating the handle are mainstream, and the price has not been reduced. Toothbrushes with bent bristles are not suitable for cleaning the periodontal pockets, so it is necessary to replace the bristles as soon as possible. Many users feel reluctant to exchange between them. Therefore, there is an urgent need to reduce the cost caused by the replacement of the toothbrush.

  However, in the conventional manufacturing method described above, it is necessary to set the handles one by one in the hair transplanting step of the hair transplanting device in the hair transplanting process, which is troublesome and expensive. On the other hand, in the case of automatic setting by a machine, the number of production lots corresponding to the operation cost of the machine is required, which is not suitable for the production of a small lot. Moreover, even if it is automated, there is no change in setting one by one, so a time loss still occurs.

  Also, in the toothbrush gate cutting process, the trace remains after cutting the gate, so a finishing process is required, but the finishing process does not give uncomfortable feeling when the user brushes Careful attention must be paid, which is one of the factors that are laborious and costly.

  Moreover, since packaging is performed one by one in the packaging process, the packaging cost for each one is high. Even when a plurality of sets are provided to a consumer, since each one is set on a mount or the like, the cost is not reduced.

  The present invention has been made to solve at least one of the above-described problems, and an object of the present invention is to provide a toothbrush manufacturing method and a toothbrush that can reduce the manufacturing cost of the toothbrush or the replacement cost of the toothbrush.

  Then, in order to solve the said subject, the manufacturing method of the toothbrush which concerns on one aspect | mode of this invention is a manufacturing method of a toothbrush containing a hair | bristle bundle and the base by which the said hair | bristle bundle is planted, Comprising: A base forming step for forming a base group unit including the base, and a flocking step for forming a brush group unit by implanting the hair bundle in the base group unit.

  Further, in the base molding step, a plurality of the bases are connected by a connecting portion to form the base group unit, and in the flocking step, the hair bundle is implanted in the base group unit, The brush group unit may be formed.

  Moreover, you may include the gate cutting process which cut | disconnects the gate part of the said brush group unit.

  Moreover, you may include the cutting part formation process which forms the cutting part for making the cutting | disconnection of the said gate part easy.

  Moreover, you may include the cutting | disconnection remainder process process of processing the cutting | disconnection remainder of the said gate part cut | disconnected.

  Further, the base is a brush base that is detachably connected to a gripping portion of the toothbrush, and in the base molding step, the base group unit including the brush base that is the base is formed. Also good.

  The brush base may include a brush side connection portion, and in the base forming step, a gate may be provided at the brush side connection portion to form the base group unit.

  In addition, the grip portion may be formed with a remaining portion storage portion for storing a cut remaining portion of the cut gate portion.

  The base may be a main body of the toothbrush, and the base group unit including the main body which is the base may be formed in the base molding step.

  The base is a main body of the toothbrush, and in the base molding step, the base group unit including the main body as the base is formed, and in the base molding step, the neck of the main body is formed. A gate may be provided in a neck that is a portion to form the base group unit, and in the cutting remaining portion processing step, the cutting remaining portion of the cut gate portion may be processed by attaching a ring-shaped portion to the neck. .

  Further, in the base molding step, the base group unit including a protection part for protecting the brush group unit may be formed.

  Moreover, in the said hair transplanting process, you may plant a plurality of said bases simultaneously by the hair transplanting machine which has several hair transplanting heads.

  Moreover, in order to solve the said subject, the brush group unit which concerns on 1 aspect of this invention is manufactured by the manufacturing method of the toothbrush as described above.

  Moreover, in order to solve the said subject, the toothbrush which concerns on 1 aspect of this invention is manufactured by the manufacturing method of the toothbrush as described in the above.

  In order to solve the above problem, the first member of the toothbrush according to one aspect of the present invention is the first member of the toothbrush used by fitting the first member and the second member together. Thus, the remaining cut portion in which a part of the gate portion at the time of forming the first member remains is in a position that fits into the fitting portion with the second member.

  In order to solve the above-mentioned problem, the toothbrush according to one aspect of the present invention is a toothbrush formed by fitting at least two members, and a cutting remaining portion in which a part of the gate portion at the time of formation remains. , In a position that fits into the mating part.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of a toothbrush and the toothbrush which can reduce the manufacturing cost of a toothbrush, or the reduction of the replacement cost of a toothbrush can be provided.

FIG. 1A is a diagram for explaining an example of a toothbrush according to the first embodiment, FIG. 1A is a diagram for explaining a toothbrush, FIG. 1B is a diagram for explaining a brush part of the toothbrush, and FIG. (c) is a figure for demonstrating the state from which the brush part and the holding part were isolate | separated. It is a figure for demonstrating an example of the manufacturing method of the toothbrush which concerns on Embodiment 1. FIG. It is a figure for demonstrating the other example of the manufacturing method of the toothbrush which concerns on Embodiment 1. FIG. FIGS. 4A and 4B are diagrams for explaining a toothbrush according to a first modification of the first embodiment, and FIG. 4B is a diagram for explaining a state in which the brush portion and the gripping portion are separated in the example. FIG. 4C is a diagram showing another example. It is a figure for demonstrating the manufacturing method of the toothbrush which concerns on the modification 1 of Embodiment 1, FIG.5 (a) is the example and FIG.5 (b) is a figure which shows another example. It is a figure for demonstrating an example of the manufacturing method of the toothbrush which concerns on the modification 1 of Embodiment 1. FIG. It is a figure for demonstrating the manufacturing method of the toothbrush which concerns on the modification 2 of Embodiment 1. FIG. It is a figure for demonstrating the toothbrush which concerns on Embodiment 2. FIG. It is a figure for demonstrating the manufacturing method of the toothbrush which concerns on Embodiment 2. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present application, in describing each component, the longitudinal (length) direction of the entire toothbrush is referred to as a “longitudinal direction”, and the lateral direction of the entire toothbrush is referred to as a “width direction”. Further, the surface of the toothbrush on the flocked surface side is referred to as “front surface”, the opposite surface is referred to as “rear surface”, and the surface therebetween is referred to as “side surface”. Also, the front direction is “upward” and the back direction is “downward”.

<Embodiment 1>
1A and 1B are diagrams for explaining an example of a toothbrush 1 according to the first embodiment. FIG. 1A is a diagram showing the toothbrush 1, and FIG. 1B is a diagram for explaining a brush portion 10 of the toothbrush 1. FIG. 1C is a view for explaining a state where the brush portion 10 and the grip portion 13 are separated. FIG. 2 is a view for explaining an example of a manufacturing method of the toothbrush 1. FIG. 3 is a view for explaining another example of the manufacturing method of the toothbrush 1 according to the first embodiment.

<Toothbrush>
The toothbrush 1 includes a bristle bundle 11 and a brush part 10 including a brush base 12 that is a base on which the bristle bundle 11 is implanted, and a grip part 13 to which the brush part 10 is detachably connected.

  The hair bundle 11 can be made of resin material such as nylon or polyester, or natural hair. Moreover, you may use what combined these 2 or more types.

  The brush base 12 includes a head 121, a neck 122, and a brush side connection portion 123. The head 121 is a portion where the hair bundle 11 is implanted, and is formed in a flat shape having a wide front surface and a back surface and a narrow side surface. The neck 122 is a portion extending to the head 121 and is formed narrower than the head 121 as an example.

  The brush side connection portion 123 is a portion that is detachably connected to the grip side connection portion 131 of the grip portion 13. Preferably, the brush side connection portion 123 is formed in a rod shape protruding from the neck 122. In addition, the grip-side connection portion 131 is provided with a connection hole 132 for inserting the brush-side connection portion 123 in the longitudinal direction.

  As an example, the brush part 10 and the grip part 13 are provided with a convex part extending in the longitudinal direction at the brush side connection part 123 and correspondingly provided with a concave part extending in the longitudinal direction on the inner wall of the connection hole 132 of the grip side connection part 131. Then, the two can be connected by fitting the convex portion and the concave portion together.

  The toothbrush 1 may be provided to the user in a state in which the brush unit 10 is connected to the gripping unit 13, or may be provided to the user in a state in which the user is not connected to assemble himself. Moreover, you may provide a user with the brush part 10 single-piece | unit for replacement.

<Manufacturing method>
2A and 2B are diagrams for explaining an example of the manufacturing method of the toothbrush 1. FIG. 2A is a base forming process, FIG. 2B is a flocking process, FIG. 2C is a gate cutting process, FIG. 2 (d) is a diagram for explaining a gate cutting remainder processing step. Here, it demonstrates centering around the brush part 10, and the holding | grip part 13 shall be manufactured with the conventional manufacturing method. In addition, since the assembly may be performed by the user as described above, the description is omitted here.

  In the base molding step, for example, a synthetic resin is injection-molded using an injection molding machine (not shown) and a mold (not shown), so that a base group unit including a plurality of bases 12 (hereinafter, “ 100) is also obtained. Specifically, the synthetic resin melted from the nozzle of the injection molding machine is injected into the mold, and the injected synthetic resin flows into the cavity through the sprue, runner, and gate, and after this cools and solidifies, the mold The base sheet 100 is obtained.

  The base sheet 100 is formed in a sheet shape in which a plurality of bases 12 (brush bases 12) are connected in a two-dimensional direction. As an example, the base sheet 100 includes four rows of bases 12 as shown in FIG. Moreover, the several base 12 is connected by the connection part 101, and comprises the base sheet 100 in a sheet form.

  Preferably, the connecting portion 101 is constituted by a runner portion formed by cooling and solidifying the synthetic resin remaining on the runner. The base sheet 100 also includes sprue portions 102 and gate portions 103 that are formed by cooling and solidifying the synthetic resin remaining on the sprue and gate.

  In the hair transplanting process, a hair bundle is planted on the base sheet 100 obtained in the base molding process using a hair transplanting machine (not shown), and a brush group unit (hereinafter also referred to as “brush sheet”) 110 is formed. can get.

  First, the base sheet 100 is set on the flocking table of the flocking machine. Here, since the base sheet 100 is formed in a sheet shape including a plurality of bases, a plurality of bases can be set in one operation, and the number of work steps can be reduced.

  Next, using a hair transplanting machine, the hair bundles folded in half are placed in the hair bundle holes 124 of the base 12 with the flat wire H interposed therebetween. Here, since the bases 12 in the base sheet 100 are arranged close to each other in a predetermined direction, the flocking work on the plurality of bases 12 can be performed collectively. As an example, when the flockable range of the flocking machine is M, the flocking machine will flock in turn to each base 12 within this flockable range, and work efficiency will be improved.

  The number of the bases 12 included in the base sheet 100 can be set according to the hair transplantable range of the hair transplanting machine, the size of the head 121, the number of hair bundles 11 to be planted, and the like. For example, as shown in FIG. 3A and FIG. 3B, two rows and eight bases 12 in which the heads 121 are arranged to face each other may be included.

  In the gate cutting step, the brush sheet 110 obtained in the flocking step is cut into the gate portion 103 to obtain the pre-treatment brush portion 10. Here, since the brush portions 10 included in the brush sheet 110 are arranged close to each other in the same direction, they can be cut by a single cutting operation using cutting tools, jigs, etc. Can be reduced.

  In the gate cutting remaining portion processing step, the brush portion 10 is obtained by finishing the gate cutting remaining portion of the pre-processing brush portion 10 obtained in the gate cutting step.

<Modification 1 of Embodiment 1>
FIGS. 4A and 4B are diagrams for explaining a toothbrush 1a according to the first modification of the first embodiment. FIG. 4A shows an example thereof, and FIG. 4B shows the brush part 10a and the gripping part 13a in the example. FIG. 4C is a diagram for explaining another state, and FIG. 4C is a diagram showing another example.

<Toothbrush>
The toothbrush 1a includes a brush portion 10a and a grip portion 13a to which the brush portion 10a is detachably connected.

  The brush portion 10a includes a cutting remaining portion 125a in the brush side connection portion 123a. As will be described later, the remaining cutting portion 125a is a remaining cutting portion of the gate portion in the gate cutting step.

  The grip portion 13a includes a remaining portion storage portion 133a in the grip side connection portion 131a. The remaining storage portion 133a is formed by extending from the connection hole 132 in the longitudinal direction. As an example, the remaining storage portion 133a may be formed in a dome shape as shown in FIG. 6B, or formed by reducing the diameter from the connection hole 132 as shown in FIG. The connection portion 131a may be formed to have a step.

<Manufacturing method>
FIG. 5 is a view for explaining the base sheet 100a in the manufacturing method (forming step) according to the first modification of the first embodiment. Unlike the base sheet 100 according to the first embodiment, the base sheet 100a has a gate formed not on the head 121 side but on the brush side connecting portion 123a side.

  The base sheet 100a may be formed in four rows as shown in FIG. 5A, or may be formed in eight rows as shown in FIG. 5B.

  The brush side connection portion 123a is inserted into the gripping portion side connection portion 131a as described above, and the cutting remaining portion 125a is stored in the remaining portion storage portion 133a. Therefore, it is not necessary to finish the remaining cutting portion remaining in the brush side connection portion 123a. That is, according to the base sheet 100a, the cutting remainder processing step can be omitted.

  Furthermore, the gate cutting step can be omitted. Specifically, since the gate is provided in the brush side connection portion 123a and the brush side connection portion 123a is hidden (contained) in the gripping portion 13a in use, the gate cutting operation may have low accuracy. This can be done even without a skilled worker. Further, the cutting operation itself can be easily performed if there is a cutting tool. Therefore, it can be provided to the user in the state of the brush portion before the gate is cut, that is, in the state of the brush sheet, and the user can cut and use it. As a result, the cost can be further reduced, and a lower-cost brush unit can be provided to the user.

  Here, a cutting part forming step for facilitating the cutting work by the user may be included. As an example, as shown in FIG. 6 (a), a cut may be formed by forming a cut with a blade N of a jig to form a cutting portion 126a, or a constricted portion may be provided to form the cutting portion 126a, as shown in FIG. 6 (b). As shown, a constricted portion may be provided between the two stepped portions to form the cut portion 126a. The cutting portion forming step may be common to the base forming step or may be provided separately.

<Modification 2 of Embodiment 1>
FIG. 7 is a diagram for explaining the toothbrush according to the second modification of the first embodiment, more specifically, the brush sheet 110b. As illustrated, the brush sheet 110b includes a protection unit 104b. Preferably, the protection part 104b is formed by a runner part at the time of molding. That is, here, in the base molding process, the runner can be formed bulky in the three-dimensional direction so that the protective part 104b is formed. In other words, the base sheet including the protection part 104b for protecting the brush sheet 110b in the molding process can be formed.

  By providing the protection part 104b, as an example, when the bag P is packaged as shown, the protection part 104b can form a frame to protect the brush sheet 110b. In this way, the package with the brush portion protection function at the time of transportation and display can be configured at low cost. Needless to say, the shape of the protective portion 104b shown here is merely an example, and may be formed in other shapes.

<Embodiment 2>
FIG. 8 is a view for explaining the toothbrush 2 according to the second embodiment. FIG. 9 is a diagram for explaining a method of manufacturing the toothbrush 2. FIG. 9A is a base molding process, FIG. 9B is a flocking process, FIG. 9C is a gate cutting process, and FIG. () Is a figure for demonstrating a cutting | disconnection remainder process process.

  The toothbrush 2 includes a bristle bundle 21, a main body 22 that is a base on which the bristle bundle 21 is implanted, and an annular portion 23 attached to the main body 22.

  The main body 22 includes a head 221, a head side neck 222, a gripping part 223, a terminal side neck 224, and a terminal part 225, and these parts are integrally formed.

  The head side neck 222 is narrower than these portions at the portion between the head 221 and the grip portion 223 and is formed in a constricted shape. Further, the end side neck 224 is narrower than these portions at the portion between the grip portion 223 and the end portion 225 and is formed in a constricted shape. The toothbrush 2 may include only one of the head side neck 222 and the terminal side neck 224.

  The annular portion 23 can be made of rubber, resin, or the like, and is preferably a material having a certain degree of elasticity. The illustrated toothbrush 2 includes two annular portions 23 and is attached to a head-side neck 222 and a distal-side neck 224, respectively. Needless to say, when the toothbrush 2 includes only one of the head-side neck 222 and the distal-side neck 224, the annular portion 23 is also one.

<Manufacturing method>
In the base molding process, a base sheet 200 including a plurality of bases 22 is obtained by, for example, injection molding a synthetic resin using an injection molding machine (not shown) and a mold (not shown). Specifically, the synthetic resin melted from the nozzle of the injection molding machine is injected into the mold, and the injected synthetic resin flows into the cavity through the sprue, runner, and gate, and after this cools and solidifies, the mold The base sheet 200 is obtained.

  The base sheet 200 is formed in a sheet shape including a plurality of bases 22 (main body 22). As an example, the base sheet 200 includes six rows of bases 22 as shown in FIG. Moreover, the some base 22 is connected by the connection part 201, and comprises the base sheet 200 in a sheet form.

  Preferably, the connection part 201 is comprised by the runner part formed by cooling and solidifying the synthetic resin which remained in the runner. Further, the sprue and the portion formed by cooling and solidifying the synthetic resin remaining on the gate are also included in the base sheet 200 as the sprue portion 202 and the gate portion 203, respectively.

  Further, in the present embodiment, the base sheet 200 is formed by providing a gate at the neck (the head side neck 222 and the end side neck 224) that is a constricted portion of the base 22.

  In the flocking process, the hair sheet is planted on the base sheet 200 obtained in the base molding process using a flocking machine (not shown), and the brush sheet 210 is obtained.

  First, the base sheet 200 is set on a flocking table of a flocking machine. Here, since the base sheet 200 is formed in a sheet shape including a plurality of bases, a plurality of bases can be set in one operation, and the number of work steps can be reduced.

  Next, although the hair transplantation work is performed using the hair transplantation machine, since the bases 22 in the base sheet 200 are arranged close to each other in a predetermined direction, the hair transplantation work on the plurality of bases 22 is performed. Can be done together. As an example, when the flockable range of the flocking machine is M, the flocking machine will flock to each base 22 in this flockable range in order, and work efficiency is improved.

  The number of the bases 22 included in the base sheet 200 can be set according to the hair transplantable range of the hair transplanting machine, the size of the head 221, the number of hair bundles 21 to be planted, and the like.

  In the gate cutting step, the pre-treatment toothbrush 2 is obtained by cutting the gate portion 203 of the brush sheet 210 obtained in the flocking step.

  In the cutting remaining portion processing step, the toothbrush 2 is obtained by attaching the annular portion 23 to the neck of the pre-processing toothbrush 2 obtained in the gate cutting step. Here, since it is only covered with the annular portion 23, the work can be easily completed, and the number of work steps can be reduced.

  As mentioned above, although embodiment of the toothbrush which concerns on this invention was described, these are only examples of embodiment of this invention, and this invention is not limited to these. The present invention includes a combination of the above embodiments and various modifications.

  The base group unit and the brush group unit are not limited to planar ones. If the features that can be planted together are utilized, the shape can be appropriately changed according to the characteristics of the flocking machine. For example, it may be curved as a whole. The bases do not have to be connected in parallel. They may be arranged radially.

Moreover, although the conventional flocking machine can be used for the flocking machine used for flocking, on the other hand, in order to perform more efficient flocking, the flocking machine concerning this invention may be provided with the following structure.
The flocking machine according to one embodiment of the present invention is a flocking machine capable of flocking simultaneously on a plurality of bases. Therefore, a plurality of hair transplantation heads for grasping the hair before planting and planting it on the base are provided. The flocking heads may be controlled independently from each other, or may be combined with a drive mechanism.
For example, a plurality of flocking heads are provided and a part of the drive mechanism is shared. That is, members such as a rotating shaft for controlling the operation of the hair transplantation head are connected, and each hair transplantation head can simultaneously perform the same operation.

  For example, the flocking machine includes three flocking heads so that flocking can be performed on each base simultaneously with respect to one sheet including three bases.

1 Toothbrush 11 Hair bundle 12 Base (Brush stand)
13 gripping part 100 base sheet 101 connecting part 110 brush sheet 2 toothbrush 21 hair bundle 22 base (main body)
222 Head side neck 224 End side neck 23 Annular part 200 Base sheet 201 Connecting part 210 Brush sheet

Claims (6)

A method for producing a brush sheet comprising a plurality of brush portions for toothbrushes including a hair bundle and a brush base on which the hair bundle is implanted,
The brush stand is
A head provided at one end in the longitudinal direction, in which the hair bundle is implanted;
A brush-side connecting portion that is provided at the other end in the longitudinal direction and detachably connects the brush base to a gripping portion of the toothbrush,
The manufacturing method of the brush sheet is as follows:
A brush base sheet forming step for forming a brush base sheet including a plurality of the brush bases;
Planting the hair bundle on the brush base sheet to form a brush sheet, and
In the brush base sheet forming step, a plurality of the brush bases are connected by a connecting portion to form the brush base sheet,
Wherein the flocked step, brush the plurality of stems are implanted the tufts for each brush stand definitive in concatenated stems sheet by the connecting portion, wherein the brush sheet are formed Sheet manufacturing method. It is a manufacturing method of the brush sheet according to claim 1 , Comprising:
And in the stems sheet forming process, the brush method of manufacturing a sheet, which comprises forming the stems sheet provided gate to the brush-side connecting portion. It is a manufacturing method of the brush sheet according to claim 1 or 2 ,
The manufacturing method of the brush sheet | seat characterized by including the cutting part formation process which forms the cutting part for making the cutting | disconnection of a gate part easy. It is a manufacturing method of the brush sheet as described in any one of Claims 1-3 ,
And in the stems sheet forming process, the manufacturing method of the brush sheet and forming the stems sheet comprising bulky protection unit in the three-dimensional to protect the brush sheet. A brush sheet manufacturing method according to any one of claims 1 to 4,
Wherein the flocking process, the flocking machine having a plurality of bristle heads, brush sheet manufacturing method which is characterized in that simultaneously flocking to a plurality of the stems.   A brush sheet comprising a plurality of brush portions for a toothbrush including a hair bundle and a brush base on which the hair bundle is implanted,
  The brush stand is
  A head provided at one end in the longitudinal direction, in which the hair bundle is implanted;
  A brush-side connecting portion that is provided at the other end in the longitudinal direction and detachably connects the brush base to a gripping portion of the toothbrush,
  The plurality of brush portions in the brush sheet are connected by a connecting portion at the time of molding,
  The brush sheet includes a protection part that is three-dimensionally bulky.
  A brush sheet characterized by that.

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