JP2004160079A - Dish with handle and manufacturing method of dish with handle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide dish with handle having high joining strength between a dish body and a handle. <P>SOLUTION: A cup 1 with handle has a periphery wall part 11, and a shaft part 12 extending from the periphery wall part 11. The body 2 comprises the periphery wall part 11 and the shaft part 12, which are formed by injection molding at the same time. The handle 3 is formed of resin so as to wrap the shaft part 12. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tableware with a handle and a method for manufacturing the tableware with a handle.
[0002]
[Prior art]
2. Description of the Related Art A tableware with a handle is known in which a tableware body and a C-shaped (ring-shaped) handle are separately formed, and both ends of the handle are respectively connected to upper and lower sides of the tableware body, so that the handle is fixed to the tableware body. .
[0003]
[Problems to be solved by the invention]
However, when the tableware main body is short, a space for attaching the ring-shaped handle cannot be secured in the tableware main body. In such a case, if the handle is fixed to the tableware body only at one end of the handle, it has been difficult to secure a sufficient connection strength for the manufacture or use of the tableware.
[0004]
Therefore, an object of the present invention is to provide a tableware with a handle and a method of manufacturing the tableware with a handle, which has a high strength of connection between the tableware body and the handle.
[0005]
[Means for Solving the Problems]
Hereinafter, the present invention will be described. In addition, in order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated embodiment.
[0006]
A tableware with a handle (1, 20) of the present invention has a peripheral wall portion (11) and a shaft portion (12) extending from the peripheral wall portion, and the tableware body in which the peripheral wall portion and the shaft portion are simultaneously injection-molded. The above-mentioned problem is solved by providing (2) and a resin handle (3) molded so as to surround the shaft portion.
[0007]
According to the tableware with a handle of the present invention, since the peripheral wall portion and the shaft portion are formed at the same time, and the handle is formed so as to cover the shaft portion, the cost is higher than in the case where the tableware is directly welded to the peripheral wall portion. It is possible to ensure the strength of the connection. Therefore, it is possible to realize tableware with a handle having sufficient strength without forming the handle in a ring shape. Conventionally, a material that uses a material having high adhesion to the main body for the handle to ensure the strength of connection between the main body and the handle is known. In this case, use of a material having high adhesiveness causes inconveniences such as an increase in cost and a loss of design. However, such inconvenience can be solved. Furthermore, since the main body and the handle are formed separately, it is possible to use different colors or materials. BACKGROUND ART Conventionally, as a method of separately forming a main body and a handle and forming tableware with a handle, a method of fitting a handle into a main body is known. In this case, dust easily accumulates at the connection between the main body and the handle, which is disadvantageous in terms of hygiene. However, the tableware with a handle of the present invention does not accumulate debris at the connection portion, and is advantageous in terms of hygiene.
[0008]
In the tableware with a handle of the present invention, the shaft portion may be formed such that an uneven portion (14b) is provided on the outer periphery. In this case, an uneven portion is also formed in a portion surrounding the shaft portion of the handle, and the uneven portion of the shaft and the uneven portion of the handle mesh with each other, so that the handle is securely prevented from coming off from the shaft portion.
[0009]
In the tableware with a handle of the present invention, the shaft portion is formed to include a base portion (13) extending from the peripheral wall portion and a core portion (14) extending from the base portion, and the handle encloses the core portion. It may be formed as follows. In this case, the core can be fixed to the center of the cavity corresponding to the handle of the mold simply by sandwiching the base with the mold for forming the handle.
[0010]
In the tableware with a handle of the present invention, an end of the core on the base side may be formed so as to gradually become thicker toward the base. When the cross section of the base and the resin poured so as to surround the core are welded, the welded portion is easily peeled off from the cross section of the base by the axial force of the handle. However, such inconvenience can be avoided by forming the core portion so as to gradually increase in thickness toward the base portion and covering the cross section of the base portion with the core portion.
[0011]
In the tableware with a handle of the present invention, the end (13a) on the core side of the base may be formed to extend linearly with a constant cross-sectional shape. In this case, the mold for forming the handle is brought into close contact with the base, and the body is easily sandwiched by the mold. Therefore, it is possible to prevent the resin from protruding toward the base side during the molding of the handle.
[0012]
In the method for manufacturing tableware with a handle (20) of the present invention, a tableware body (2), a shaft portion (12) extending from the tableware body, and a disposal shaft (21) extending from the shaft portion to the tableware body are simultaneously formed. The object described above is solved by providing a step of injection molding, a step of molding a resin handle (3) so as to enclose the shaft, and a step of removing the discarded shaft.
[0013]
When the shaft portion is lengthened, the contact area between the shaft portion and the handle is increased, and the handle is prevented from coming off. On the other hand, the shaft may be deformed in the process of solidifying the shaft or in the process of pouring the resin so as to wrap the shaft. However, according to the method for manufacturing tableware with a handle of the present invention, such a fear can be eliminated because the disposal shaft for supporting the core is provided.
[0014]
Another manufacturing method of the tableware with a handle (30) according to the present invention includes simultaneously forming a tableware body (2), a handle (3) extending from the tableware body, and a disposal shaft (21) extending from the handle to the tableware body. The above-mentioned problem is solved by providing a step of performing injection molding and a step of removing the waste shaft.
[0015]
If the handle and the main body are injection-molded at the same time, the handle may fall down in the process until the handle solidifies. However, according to another method for manufacturing tableware with a handle of the present invention, such a fear can be eliminated because the disposal shaft for supporting the handle is provided.
[0016]
Another tableware with a handle (40) of the present invention includes a handle (3) having a handle body (41) and a retaining portion (42), wherein the handle body and the retaining portion are simultaneously injection-molded. The above-mentioned problem is solved by providing a tableware body (2) made of resin molded so as to surround the retaining portion.
[0017]
According to another tableware with a handle of the present invention, since the handle body and the retaining portion are formed at the same time and the tableware body is molded so as to cover the retaining portion, the case where the tableware is directly welded to the tableware body is used. It is possible to secure a higher connection strength as compared with. Therefore, it is possible to realize a tableware with a handle having sufficient strength without forming the handle in a ring shape or using a material having high adhesion for the handle. In addition, since the main body and the handle are formed separately, it is possible to use different colors or materials. Furthermore, compared to the method of fitting the handle into the main body, there is no dust accumulated at the connection portion, which is advantageous in terms of hygiene.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
FIG. 1 shows a first embodiment of the present invention. The cup 1 in FIG. 1A is configured as tableware for an infant, and includes a main body 2, a handle 3, and a cradle 4.
[0019]
The main body 2 includes a bottom part 10, a peripheral wall part 11 surrounding the bottom part 10, and a shaft part 12 protruding from the peripheral wall part 11. The shaft 12 includes a base 13 extending from the peripheral wall 11 and a core 14 extending from a cross section of the base 13. The core portion 14 is provided with a plurality of protrusions 14a... 14a to form an uneven portion 14b. FIG. 1B is an enlarged view of a connection portion between the base 13 and the core 14. An end 13a of the base 13 on the side of the core 14 is formed in a columnar shape extending linearly. The connection between the core 14 and the base 13 is chamfered, and the end of the core 14 on the base side is formed so as to gradually become thicker toward the base 13.
[0020]
The handle 3 is configured as a shaft-shaped handle, and only one end 3 a of the both ends 3 a and 3 b is connected to the main body 2. The end 3 a is formed so as to cover the core 14.
[0021]
A method for forming the cup 1 will be described. First, by pouring one kind of resin into a pair of molds having cavities in the same shape as the contours of the bottom portion 10, the peripheral wall portion 11, and the shaft portion 12, the respective portions 10 to 12 are simultaneously injection-molded to form the main body 2. I do. After the main body 2 has solidified to some extent, the main body 2 is sandwiched between a pair of molds 100 and 100 (only one is shown in FIG. 1B) having a cavity having the same shape as the contour of the handle 3. Portions 100a, 100a on the base 13 side of the molds 100, 100 are longer than the end 13a and are formed in a columnar shape extending linearly. The ends 100a, 100a are overlapped in a direction perpendicular to the paper surface of FIG. 1B, and the end 13a is pressed from both sides. Then, as shown by arrows y1 and y1, one type of resin is poured so as to wrap the core portion 14, thereby forming the handle 3 (the hatched portion in FIG. 1A).
[0022]
According to such a cup 1, since the main body 2 and the handle 3 are separately formed, it is possible to make each color or material different. Since the peripheral wall portion 11 and the shaft portion 12 are formed at the same time, and the handle 3 is formed so as to cover the shaft portion 12, a higher connection strength is secured as compared with a case where the peripheral wall portion 11 is directly welded. It is possible to do. Therefore, sufficient strength can be ensured without forming the handle 3 in a ring shape or using a material having high adhesion to the main body 2 for the handle 3. BACKGROUND ART Conventionally, as a method of separately forming a main body and a handle and forming tableware with a handle, a method of fitting a handle into a main body is known. In this case, dust easily accumulates at the connection between the main body and the handle, which is disadvantageous in terms of hygiene. However, the cup 1 of the present invention is advantageous in terms of hygiene since dust does not accumulate at the connection portion. Since the core portion 14 is provided with the uneven portion 14b, the uneven portion is also formed in a portion surrounding the shaft portion of the handle 3. For this reason, the uneven portion 14b and the uneven portion of the handle are engaged with each other, and the handle 3 is securely prevented from coming off the shaft portion 12. Since the core portion 14 is formed so as to gradually increase in thickness toward the base portion 13, peeling of the handle 3 is also prevented. By making the end portion 13a a straight and simple shape, the end portions 100a, 100a can be brought into close contact with the end portion 13a, and the main body 2 can be easily sandwiched between the molds 100, 100. The resin can be prevented from protruding to the base 13 side.
[0023]
If the length of the shaft portion 12 is set too long, the shaft portion 12 may be deformed by molding pressure or shrinkage during molding of the handle 3. The main body 2 and the handle 3 may be formed of the same type of resin, or may be formed of different types of resin. The pedestal 4 may be injection-molded in parallel with the molding of the handle 3 or after the molding of the handle 3, by sandwiching the main body 2 with a mold for forming the pedestal 4.
[0024]
(Second embodiment)
FIG. 2 shows a cup 20 according to a second embodiment of the present invention. FIG. 2A is a diagram illustrating the cup 20 in a molding process, and FIG. 2B is a diagram illustrating the cup 20 after the molding. In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals.
[0025]
The cup 20 is different from the cup 1 in that the core 14 extends to the end 3b of the handle 3 and that the protrusions 14a... 14a are not provided. Further, in the forming process, a difference is that a discard shaft 21 that connects the end portion 12a of the shaft portion 12 and the peripheral wall portion 11 is provided.
[0026]
A method for forming the cup 20 will be described. First, the resin is poured into a pair of molds having cavities in the same shape as the contours of the bottom portion 10, the peripheral wall portion 11, the shaft portion 12, and the disposal shaft 21, thereby simultaneously injection-molding the respective portions 10 to 12 and the disposal shaft 21. , The main body 2 is formed. After the main body 2 has solidified to some extent, a resin is poured so as to surround the core portion 14 as in the first embodiment, thereby forming the handle 3 (hatched portion in FIG. 2). After the handle 3 has solidified to some extent, the disposal shaft 21 is removed.
[0027]
According to the cup 20, since the core portion 14 extends to the end 3b of the handle 3, the handle 3 can be securely fixed to the core portion 14 without providing the convex portions 14a... 14a. If the core portion 14 is set to be long, the core portion 14 may fall down toward the main body 2 or the like in the process of forming the handle 3 or the like. However, such a fear can be eliminated by providing the disposal shaft 21 that supports the core portion 14.
[0028]
(Third embodiment)
FIG. 3 shows a cup 30 according to a third embodiment of the present invention. FIG. 3A is a diagram illustrating the cup 30 in a molding process, and FIG. 3B is a diagram illustrating the cup 30 after the molding. Note that, in FIG. 3, the same parts as those in FIG. 2 are denoted by the same reference numerals.
[0029]
In the cup 20 of the second embodiment, the handle 3 is formed so as to cover the core 14 after the core 14 is formed, whereas in the cup 30, the main body 2 and the handle 3 are formed simultaneously. . Then, after the handle 3 has solidified to some extent as in the second embodiment, the disposal shaft 21 is removed. By supporting the handle 3 with the disposal shaft 21 until the handle 3 is sufficiently solidified, the handle 3 can be prevented from falling down to the main body 2 side or the like.
[0030]
(Fourth embodiment)
FIG. 4 shows a fourth embodiment. In FIG. 4, the same parts as those in FIG. 1 are denoted by the same reference numerals.
[0031]
The cup 40 of FIG. 4A is different from the cup 1 in that the core 12 is not provided. The handle 3 includes a handle main body 41 and a retaining portion 42. The retaining portion 42 is formed so as to expand radially from a cross section of the end portion 41 a of the handle main body 41, and is covered by the base portion 13 and the peripheral wall portion 11. FIG. 4B is an enlarged view of a connection portion between the end portion 41 a and the retaining portion 42. The end 41a is formed in a columnar shape extending linearly.
[0032]
A method for forming the cup 40 will be described. First, by injecting one type of resin into a pair of molds having a cavity in the same shape as the outline of the handle body 41 and the retaining portion 42, the handle body 41 and the retaining portion 42 are simultaneously injection-molded, and the handle 3 is formed. Form. After the handle 3 is solidified to some extent, the handle 3 is sandwiched between a pair of molds 200 and 200 (only one is shown in FIG. 4B) having a cavity having the same shape as the contour of the main body 2. The ends 200a, 200a of the dies 200, 200 on the handle main body 41 side are longer than the end 41a, and are formed in a columnar shape extending linearly. The ends 200a, 200a are overlapped in the direction perpendicular to the paper surface of FIG. 4B, and the end 41a is pressed from both sides. Then, as indicated by arrows y2 and y2, one type of resin is poured so as to wrap around the retaining portion 42, thereby forming the main body 2 (the unhatched portion in FIG. 4A).
[0033]
According to such a cup 40, similarly to the cup 1, it is possible to make each color or material different, which is also advantageous in terms of hygiene. Since the retaining portion 42 is covered with the peripheral wall portion 11, it is possible to secure a higher connection strength than when the peripheral wall portion 11 and the handle main body 41 are directly welded to each other. Dropout is also reliably prevented. By forming the end 41a into a straight and simple shape, the end 200a, 200a can be brought into close contact with the end 41a, and the handle 3 can be easily sandwiched between the molds 200, 200. The resin can be prevented from protruding to the handle body 41 side.
[0034]
The base 13 may not be provided. Regarding the connection between the cradle 4 and the main body 2, the cradle 4 is injection-molded before molding the main body 2, the handle 3 is sandwiched by the dies 200, 200, and the cradle 4 is also sandwiched. What is necessary is just to connect with the main body 2.
[0035]
【The invention's effect】
As described above, according to the tableware with a handle of the present invention, since the peripheral wall and the shaft are formed at the same time, and the handle is formed so as to cover the shaft, it is directly welded to the peripheral wall. Compared with such a case, it is possible to secure a higher connection strength. Accordingly, it is possible to realize a tableware with a handle having sufficient strength without forming the handle in a ring shape or using a material having high adhesion to the main body for the handle.
[Brief description of the drawings]
FIG. 1 is a view showing a cup according to a first embodiment.
FIG. 2 is a view showing a cup according to a second embodiment.
FIG. 3 is a view showing a cup according to a third embodiment.
FIG. 4 is a view showing a cup according to a fourth embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cup 2 Main body 3 Handle 11 Peripheral wall part 12 Shaft part 13 Base part 13a End part 14 Core part 14a Concavo-convex part 20 Cup 21 Discard shaft 30 Cup 40 Cup 41 Handle main body 42 Detent part

Claims (8)

A peripheral wall portion and a tableware body having a shaft extending from the peripheral wall portion, wherein the peripheral wall portion and the shaft portion are simultaneously injection-molded,
A resin handle molded so as to enclose the shaft portion,
A tableware with a handle, comprising: The tableware with a handle according to claim 1, wherein the shaft portion is formed so that an uneven portion is provided on an outer periphery. The shaft is formed to include a base extending from the peripheral wall, and a core extending from the base,
The tableware with a handle according to claim 1, wherein the handle is formed so as to surround the core. The tableware with a handle according to claim 3, wherein an end portion of the core portion on the base portion side is formed so as to gradually become thicker toward the base portion. The tableware with a handle according to claim 3 or 4, wherein an end portion of the base portion on the core portion side is formed to extend linearly with a constant cross-sectional shape. A tableware body, a shaft extending from the tableware body, and a step of simultaneously injection-molding a disposal shaft extending from the shaft to the tableware body,
Forming a resin handle so as to enclose the shaft portion;
Removing the abandoned shaft;
A method for manufacturing tableware with a handle, comprising: A tableware body, a handle extending from the tableware body, and a step of simultaneously injection molding a disposal shaft extending from the handle to the tableware body,
Removing the abandoned shaft;
A method for manufacturing tableware with a handle, comprising: A handle having a handle body and a retaining portion, wherein the handle body and the retaining portion are simultaneously injection-molded,
A tableware body made of resin molded so as to wrap the retaining portion,
A tableware with a handle, comprising:

Images