JP2003001718A - Method for producing pit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively produce a pit having three pipe joint parts. SOLUTION: A basic pit 1 having the pipe joint parts 3, 4, and 5 extending in three directions from the two sides of a pit main body part 2 is injection- molded. The two pipe-joint parts 3 and 4 are expanded by post-machining to be inflow pipe faucet parts 3A and 4A, and the residual pipe joint part 5 is used as an outflow pipe insertion port part 5A without being machined. In this method, only one kind of injection molding mold is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a trout in which pipe connections are extended from the side of a main body to three sides.

[0002]

2. Description of the Related Art The pipe connecting parts are extended from the side of the main body to three sides. Any two of the above three pipe connecting parts are used as the inlet part of the inflow pipe, and the other one is the outlet pipe. It is used as a spigot. There are three types of masu such as masu 1A shown in FIG. 8, masu 1B shown in FIG. 9 and masu 1C shown in FIG.

1A shown in FIG. 8 is Y (right 45 ° left 45
The angle θ ₁ between the axes of the two sockets (3A, 4A) that are inserted from the side of the main body (2A) is 9
0 °, the angle θ ₂ formed between the axes of the left and right receiving portions (3A, 4A) and the insertion portion (5A) is 135 ° (complementary angle 45 °). The 1B shown in Fig. 9 merges 90 ° to the right and 45 ° to the left, and the angle θ ₂ formed between the axes of the two sockets (3B, 4B) that are extended from the side of the main body (2B) is 135. °, the angle θ ₁ between the axes of the right socket (3B) and the socket (5B) is 90
The angle formed between the axes of the left receiving part (4B) and the insertion part (5B) is 135 ° (complementary angle 45 °). 1C shown in FIG.
Is 90 ° on the left and 45 ° on the right, and the main body (2C)
The angle θ ₂ between the axes of the two receiving parts (3C, 4C) that are inserted from the side is 135 °, and the angle θ ₁ between the axes of the left receiving part (3C) and the insertion part (5C) is 90 °, the angle θ ₂ between the axes of the right receiving part (4C) and the insertion part (5C) is 135 ° (complementary angle 45
°). Conventionally, the above three types of masu (1A, 1B, 1C) are manufactured by injection molding using different molds.

[0004]

SUMMARY OF THE INVENTION In the above conventional method,
Since three kinds of molds are used to manufacture three kinds of masu, there are problems that the mold cost is high and the production efficiency is poor.

[0005]

[Means for Solving the Problems] As a means for solving the above-mentioned conventional problems, the present invention is based on the fact that the pipe connecting portions (3,4,5) are extended from the side of the main body (2) to three sides ( 1) is injection-molded, and two connection ends of the pipe connection parts (3,4,5)
The diameter of (3, 4) is expanded by post-processing and the inlet pipe receiving part (3A, 4A)
And the other one connecting end (5) is the outlet pipe
(5A) and (1A) are provided.
It is preferable to install a guide plate (12) between the two receptacles (3A, 4A) in the main body (2), and the three pipe connection parts (3) of the main body (2). , 4,5) of the two pipe connections (3, 4) between the axes A _1, A _{2 have} an angle θ ₁ of 90 °,
The angle θ ₂ between each of the above two pipe connection parts (3, 4) and the axis A _{3 of the} other pipe connection part (5) is set to 135 °, and the main body part (2) Opening surface (31, 4, 5) where each pipe connection (3, 4, 5) opens from the center point P to the main body (2)
41, 51), if the perpendicular lines V _1, V ₂ , V ₃ are drawn, the perpendicular lines V _1, V ₂ , V
₃ mutual angle theta ₃ of is preferably a 120 °. Furthermore, each pipe connection part (3,4,5) in the main body part (2)
It is desirable that a mark (10) be attached at the intersection of the axes A _1, A ₂ , A ₃ of, and one or more handles (6, 7, 8) are provided on the outer circumference of the main body (2). Is preferably sent.

[0006]

[Operation] In the present invention, the basic body (1) in which the pipe connection portions (3,4,5) are inserted in three directions from the side surface of the main body portion (2) is injection molded,
Then select two of the three pipe connections (3,4,5) according to which one you want to manufacture (1A, 1B, 1C) and expand the diameter of the connection end by post-processing. Inlet pipe port (3A, 4A, 3
B, 4B, 3C, 4C), it is sufficient to prepare one type of injection mold even if three types of masu (1A, 1B, 1C) are manufactured. A mold jig for post-processing such as blow molding is cheaper than an injection mold. If a guide plate (12) is installed between the two receiving portions (3, 4) in the main body (2), the above two receiving portions (3, 4)
The water flowing into the main body (2) is smoothly guided to the outflow side without mutual interference.

[0007]

[Embodiment] The present invention will be described with reference to one embodiment shown in FIGS. 1 to 7. The basic body (1) shown in FIG. 1 is molded by injection molding, and the body (2) of the body (1) is Pipe connections (3,4,5) are extended from the side to three sides, and handles (6,7 ,,) are provided between the pipe connections (3,4,5) on the outer periphery of the main body (2). 8) is attached, and a seat ring (9) is attached at the bottom. In the above basic case (1), the angle θ ₁ formed by the axes A _1, A ₂ of the two pipe connection parts (3, 4) of the three pipe connection parts (3, 4, 5) is 90 °, Axis lines A _1, A of the above two pipe connection parts (3, 4)
_The angle θ ₂ between each of the ₂ and the axis A ₃ of the other pipe connection part (5) is set to 135 °, and further, at the bottom of the main body part (2), the above-mentioned axis lines A _1, A A mark (10) is written at the intersection (reference point) of ₂ and A ₃ .

Furthermore, a mounting hole (11) for the guide plate (12) is provided at the center of the bottom of the main body (2), and each pipe connecting portion (3, 3) from the center point P of the main body (2). 4,5) draw perpendicular lines V _1, V _2, V ₃ on the opening surface (31, 41, 51) that opens to the main body (2), the perpendicular lines V _1, V _2, V ₃ are The angles are equal to 120 °, and the extension lines of the vertical lines V _1, V _{2 and} V ₃ are connected to each pipe connecting portion.
Pass through the center between (3,4,5).

[0009] Basic injection molded by the above
Two of the three pipe connections (3,4,5) in (1) are expanded by blow molding to form the inlet pipe receiving portion, and the other one is the same. It will be the outlet of the outflow pipe. And, depending on which of the above three pipe connection parts (3,4,5) is used as the pipe receiving part, there are three types (1A, 1B, 1C) shown in Fig. 3, Fig. 4 and Fig. 5. Is manufactured. As shown in Figure 3, (1A) is Y
(Right 45 ° left 45 °) Merge, shown in Fig. 4 (1B) merges 90 ° right 45 ° left, merges as shown in Fig. 5 (1C) left 9
It joins at 0 ° and 45 ° to the right.

In the case of Masu (1A), the pipe connection (3, 4) of the basic (1) is blow-molded to form the socket (3A, 4A), and the other one of the pipe connection (5) is That is the insertion port (5A). In the case of (1B), the pipe connection part (4,5) of the basic (1) is made into the receiving part (3B, 4B) by blow molding, and the other one pipe connection part (3) remains the same. The insertion part (5B). In the case of (1C), the pipe connection part (3, 5) of the basic (1) is made into the receiving part (3C, 4C) by blow molding, and the other one pipe connection part (4) remains as it is. The tip is only chamfered to form the insertion port (5C).

In the case of this embodiment, the rubber ring receivers (31A, 31B, 31C, 41A, 41B, 41C) are formed in the respective receiving portions, and the inlet pipes of the respective receiving portions are bonded with an adhesive. It may be used as an adhesive receiver.

Masu main body of the above three types of masu (1A, 1B, 1C)
In (2A, 2B, 2C), a guide plate (12) is attached between the receiving portions. The guide plate (12) is inserted between the receiving parts
(5A, 5B, 5C) is attached along the perpendicular to the opening surface,
As shown in FIG. 6, a mounting boss is provided from the lower edge of the guide plate (12).
(13) is inserted, and the mounting boss (13) is fitted into the mounting hole (11) of the main body (2) as shown in FIG.
It is fixed to the inner wall between the sockets of (2) with an adhesive. The guide plate (12) can be commonly used for the above three types of masu (1A, 1B, 1C).

The above-mentioned masu (1A, 1B, 1C) can be easily carried and installed by using the handles (6, 7, 8) as a clue. Further, the guide plate (12) prevents the mutual interference of water flowing into the inside (1A, 1B, 1C) from the two receiving portions, and the water smoothly flows out to the outflow pipe side. Therefore, it is possible to avoid clogging such as dust in the internal flow path.

In the above-mentioned embodiment, blow molding is exemplified as the post-processing for expanding the diameter of the pipe connecting portion, but as the post-processing, in addition to blow molding, vacuum molding, blow vacuum molding, and a method of expanding the diameter by inserting a plug. Etc. Blow molding, vacuum molding, and blow vacuum molding are applied to the formation of the receiving portion with the rubber wheel receiver, and the method of inserting the plug is applied to the receiving portion of the adhesive receiver without the rubber wheel receiver.

[0015]

According to the present invention, since the masu having three pipe connection parts can be manufactured by one type of injection molding mold, the mold cost can be greatly reduced and the masu can be manufactured at low cost. I can.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention.

[Fig. 1] Basic plan view

[Fig. 2] Basic side view

[Fig. 3] Plan view of Y confluence

[Figure 4] Right 90 ° left 45 ° merged plan view

[Fig.5] Left 90 ° Right 45 °

[Fig. 6] Side view of the guide plate

FIG. 7 is a side sectional view showing a state where the guide plate is attached. FIGS. 8 to 10 show a conventional example.

[Fig.8] Plan view of Y confluence

[Figure 9] Right 90 ° left 45 ° merged plan view

[Fig. 10] Plan view where 90 ° left and 45 ° right merge.

[Explanation of symbols]

1 Basic 1A, 1B, 1C Mas 2A, 2B, 2C Mas Main body 3,4,5 Pipe connection 3A, 4A Receptacle 5A Insertion 6,7,8 Handle 10 Mark 12 Guide plate 31,41, 51 Opening plane P Center point θ _1, θ ₂ , θ ₃ Angle A _1, A _2, A ₃ Axis V _1, V _2, V ₃ Perpendicular

Claims (5)

[Claims] [1] An inflow pipe receiving part is formed by injection-molding a basic mast in which pipe connecting parts are three-sided from the side surface of the main body part, and expanding two connecting ends of the pipe connecting parts by post-processing. age,
The other manufacturing method is characterized in that the other connecting end is the outlet of the outflow pipe. 2. The method for manufacturing a masque according to claim 1, wherein a guide plate is attached between the two receiving portions in the main body. Wherein said masu axis angle theta ₁ mutual two tube connection portion of the three tube connecting portion of the main body portion 90 °, respectively with another pipe connection of the two tube connecting portion The angle θ ₂ between the axes is set to 135 °, and if you draw a perpendicular line from the center point of the main body to the opening surface where each pipe connection opens in the main body, Angle θ ₃
Is 120 °. 4. The method for producing a masque according to claim 1, wherein a mark is attached at the intersection of the axes of the respective pipe connecting portions in the main body portion. 5. The method for manufacturing a masque according to claim 1, wherein one or more handles are provided on the outer circumference of the main body of the mast.