JP3626511B2 - Manufacturing method of sensor container - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is a temperature sensor, humidity sensor relates to a method for producing a sensor container such as a pressure sensor, in particular, dust, a method of manufacturing a suitable sensor container for use in sensors that affect the sensitivity and stain such as dust from adhering .
[0002]
[Prior art]
Sensors such as a temperature sensor, a humidity sensor, and a pressure sensor affect the detection sensitivity when dirt such as dust and dirt adheres. There is a sensor container for preventing such dust and dirt from adhering to the sensor. The sensor container is generally made of a synthetic resin, and has a container body whose bottom is open, a lid on which a window is formed, and a hinge, which are integrally molded with resin. A synthetic resin mesh (mesh-like sheet) is bonded to each of the open bottom of the container body and the outer surface of the lid.
[0003]
In order to manufacture such a sensor container, a cavity for forming a container body part, a lid part, and a hinge part is formed in one of a pair of molds, and the container body part and the lid part are formed. After putting one mesh material at the bottom of each cavity, the mold is closed, molten resin is injected into the molding cavity, and the container body part, the lid part and the hinge part are integrally molded with resin, and the container body part and A method of joining a mesh material to the lid portion is taken.
[0004]
[Problems to be solved by the invention]
However, in the prior art, when the sensor container is manufactured as described above, the bottom of the cavity for molding the container body part formed in one mold and the bottom of the cavity for molding the lid part are formed. In addition, since it is necessary to form the sensor container after putting one mesh material for each sheet, there is a problem that it takes time and effort for manufacturing and increases the cost.
[0005]
An object of the present invention is to provide a method of manufacturing a sensor container that facilitates a molding operation and can be manufactured at low cost.
[0008]
[Means for Solving the Problems]
The method for manufacturing a sensor container of the present invention operates as follows in order to achieve the above object. That is, in a method for manufacturing a synthetic resin sensor container having a synthetic resin container body with a bottom opened and a synthetic resin lid formed with a window, (a) a guide groove of a mesh sheet material; Providing a pair of molds, one of which has a first cavity for forming the container body and a second cavity for forming the lid, which are formed in a plurality of rows in the guide groove and positioned adjacent to each other; (b) Opening the pair of molds and inserting the mesh sheet material into the guide groove so as to cover the plurality of rows of the first cavities and the second cavities; (c) closing the pair of dies and the plurality of rows Injecting molten resin into the first cavity and the second cavity to form an intermediate molded product in which the mesh sheet material is bonded to the open bottom of the container body and the outer surface of the lid; (d) the pair of gold Open the mold and remove the intermediate molded product Succoth; (e) between each column of the container body and the lid be cut separating said mesh sheet material; in (f) To prepare the mold (a), non-insertion of the mesh sheet material Forming dummy first cavities and second cavities that do not inject molten resin into guide groove portions outside the first cavity and second cavity rows located on the side, and in step (d), After the removal, the container body and the lid formed by the first cavity and the second cavity row located on the insertion side of the mesh sheet material are put into the dummy first cavity and the second cavity to perform the procedure (b) ) Is performed, and then the procedures (c) and (d) are performed. Thereafter, the procedures (b) to (d) are repeated .
[0009]
In the method for manufacturing a sensor container, preferably, in the step (a) of preparing the mold, the first cavity and the second cavity in each row are set to the sum of the height of the container body and the height of the lid. Adjacent to each other by an approximately equal distance.
[0011]
[Action]
In the sensor container of the present invention configured as described above, a single mesh is joined to the open bottom of the container body and the outer surface of the lid in a state where the container body and the lid are separated, By forming the hinge of the lid at the mesh portion, the structure of the sensor container is simplified, so that the molding operation when manufacturing the sensor container becomes easy and the manufacturing cost is reduced.
[0012]
Also, by making the length of the mesh part forming the hinge of the lid substantially equal to the sum of the height of the container body and the height of the lid, the mesh can be used without waste, so the manufacturing cost is reduced and the sensor container is reduced. The appearance will be good.
[0013]
Furthermore, in the sensor container manufacturing method of the present invention configured as described above, a guide groove for mesh sheet material is provided in one of a pair of molds, and a plurality of rows of first cavities for container body molding and lid molding are provided. After the mesh sheet material is inserted into the guide groove so as to cover the second cavity, the mold is closed, molten resin is injected, and the mesh sheet material is joined to the open bottom of the container body and the outer surface of the lid By forming the sensor, it is not necessary to put one mesh material on each of the bottom of the cavity for molding the container body part and the bottom of the cavity for molding the lid part as in the prior art. The molding operation when manufacturing the container is facilitated, and the manufacturing cost is reduced.
[0014]
Further, by arranging the first cavity and the second cavity adjacent to each other by a distance substantially equal to the sum of the height of the container body and the height of the lid, the length of the mesh portion forming the hinge is equal to the height of the container body. Since the mesh becomes almost equal to the total height of the lid and the mesh is used without waste, the manufacturing cost is reduced and the appearance of the sensor container is improved.
[0015]
In addition, after taking out an intermediate molded product in which a mesh sheet material is bonded to the open bottom of the container body and the outer surface of the lid, the container body is formed with a first cavity and a second cavity row located on the mesh sheet material insertion side. In addition, by placing the lid in the first and second cavities of the dummy, positioning and holding of the mesh sheet material in the next molding is facilitated. Moreover, when the roll which supplies a mesh sheet material is comprised as a tension roll, a mesh sheet material does not rewind to a tension roll, but a tension | tensile_strength is applied to a mesh sheet material. For this reason, the molding operation when manufacturing the sensor container is further facilitated.
[0016]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
First, an embodiment of the sensor container of the present invention will be described with reference to FIGS. 1 to 4, the sensor container of the present embodiment has a synthetic resin container body 1 and a synthetic resin lid 2, and a sensor such as a temperature sensor, a humidity sensor, and a pressure sensor is provided in the container body 1. 3 is stored. The container body 1 is open at the bottom 1A, and on the side 1B on the side opposite to the lid, two sensor terminal receiving grooves 5 for inserting sensor terminals 4 for connecting the sensor 3 to an external device (not shown) are formed, and the side of the top 1C is formed. Two locking recesses 6 are formed on the 1B side. The lid 2 has a window 7 formed at the center, and two locking projections 8 corresponding to the locking recesses 6 of the container body 1 are formed at the end of the inner surface 2B on the side opposite to the container body.
[0017]
In addition, on the open bottom 1A of the container body 1 and the outer surface 2A of the lid 2, a single mesh 10 opens the window 7 of the open bottom 1A of the container body 1 and the lid 2 in a state where the container body 1 and the lid 2 are separated. The hinge of the lid 2 is formed by a portion 10 </ b> A between the container body 1 and the lid 2 of one mesh 10 that is joined so as to cover. The length L1 of the mesh portion 10A forming the hinge is substantially equal to the sum of the height T1 of the container body 1 and the height T2 of the lid 2.
[0018]
Next, an embodiment of the method for manufacturing the sensor container will be described with reference to FIGS. 5 and 6, the mold apparatus 20 used in the present embodiment is a pin gate type mold, and includes a movable side 20A and a fixed side 20B.
[0019]
The movable side 20 </ b> A has a movable mold 21, and a guide groove 23 for inserting the mesh sheet material 22 supplied from the tension roll 22 </ b> A is formed on the movable mold 21. The tension roll 22A is obtained by winding a mesh sheet material 22 in a roll around a mandrel having a known tension applying mechanism. In the guide groove 23, the first cavities 26a, 26b, 26c, 26d for molding the container body 1 and the second cavities 27a, 27b, 27c, 27d for molding the lid 2 are adjacent to each other in a plurality of rows. As shown in FIG. 7, the mesh sheet material 22 is positioned in the guide groove portion outside the row of the first cavities 26 d and the second cavities 27 d that are formed on the side opposite to the insertion side of the mesh sheet material 22. A dummy first cavity 28A and second cavity 28B for holding are formed. The distance L2 between the first cavities 26a to 26d and the second cavities 27a to 27d and the dummy first cavities 28A and 28B in each row is the height T1 of the container body 1 and the height T2 of the lid 2. It is almost equal to the total. A movable attachment plate 31 is disposed below the movable mold 21 via a spacer 30, and a knock pin attachment plate 32 is disposed above the movable attachment plate 31. A knock pin 33 penetrating the movable mold 31 and connected to the first cavities 26a to 26d and the second cavities 27a to 27d is disposed above the knock pin mounting plate 32, and the knock pin push bar 34 is pushed upward. The knock pin 33 is also pushed upward so that the main body container 1 and the lid 2 formed by the first cavities 26 a to 26 d and the second cavities 27 a to 27 d can be brought into contact with and separated from the movable mold 21.
[0020]
On the other hand, the fixed side 20 </ b> B has a fixed mold 41, and a gate cutting plate 42 is disposed below the fixed mold 41. The fixed mold 41 has a pouring port 44 and a distribution passage 45 for injecting molten resin into the first cavities 26a to 26d and the second cavities 27a to 27d on the movable side 20A. It has the gate 46 connected.
[0021]
In the sensor container manufacturing method of the present embodiment, the sensor container is molded using the mold apparatus 20 described above. Hereinafter, the procedure of the manufacturing method will be described.
First, in a state in which the movable side 20A and the fixed side 20B of the mold apparatus 20 are open, as shown in FIG. 7, the mesh sheet material 22 covers the first cavities 26a to 26d and the second cavities 27a to 27d. Is inserted into the guide groove 23. At this time, the mesh sheet material 22 is prevented from being rewound onto the tension roll 22 </ b> A by appropriate means such as holding the opposite end of the mesh sheet material 22 by hand.
[0022]
Next, the movable side 20A and the fixed side 20B are closed, and molten resin is poured into the pouring port 44 of the fixed side 20B. Molten resin is injected into the first cavities 26a to 26d and the second cavities 27a to 27d on the movable side 20A from the pouring port 44 through the distribution passage 45 and the gate 46, and at the same time, as shown in FIG. An intermediate molded product 50 in which the mesh sheet material 22 is joined to the open bottoms of 1b, 1c, and 1d and the outer surfaces of the lids 2a, 2b, 2c, and 2d is formed.
[0023]
Next, the movable side 20A and the fixed side 20B are opened, the knock pin push rod 34 is operated, and the knock pin 33 is pushed upward to take out the intermediate molded product 50.
[0024]
Next, for positioning in the next molding, the container main body 1a and the lid 2a formed by the first cavity 26a and the second cavity 27a located on the insertion side of the mesh sheet material 22 in the intermediate molded product 50 are replaced with the dummy first. It enters into the 1st cavity 28A and the 2nd cavity 28B. This state is a state in which the mesh sheet material 22 is inserted into the guide groove 23 so as to cover the first cavities 26a to 26d and the second cavities 27a to 27d as preparation for the next molding. At this time, by inserting the container body 1a and the lid 2a formed in the dummy first cavity 28A and the second cavity 28B, the mesh sheet material 22 is not rewound onto the tension roll 22A, and the mesh sheet material 22 is tensioned. It takes.
[0025]
Thereafter, the movable side 20A and the fixed side 20B are closed again, molten resin is injected into the first cavities 26a to 26d and the second cavities 27a to 27d, and the next intermediate molded product 50 is formed. The fixed side 20B is opened, and the intermediate molded product 50 is taken out.
[0026]
Thereafter, the procedure from the insertion of the mesh sheet material 22 into the guide groove 23, the injection of molten resin to form the intermediate molded product 50, and the removal of the intermediate molded product 50 is repeated. 9 and the final intermediate molded product 50a formed with the lid 2 is taken out, the final intermediate molded product 50a passes between the rows of the container body 1 and the lid 2 indicated by a two-dot chain line S as shown in FIG. By moving the molded product 50a, the rows of the container main body 1 and the lid 2 are cut and separated. Thus, the final sensor container as shown in FIG. 1 is obtained.
[0027]
According to the sensor container and the manufacturing method thereof of the present embodiment as described above, the structure is compared with a conventional sensor container in which a mesh made of synthetic resin is joined to the open bottom of the container body and the outer surface of the lid. This eliminates the need to put one mesh sheet material at the bottom of the cavity for molding the container body part and the bottom of the cavity for molding the lid part as in the prior art. The molding operation when manufacturing the container is facilitated, and the manufacturing cost is reduced. Further, since the first cavities 26a to 26d and the second cavities 27a to 27d are disposed adjacent to each other by a distance substantially equal to the sum of the height T1 of the container body 1 and the height T2 of the lid 2, a hinge is formed. The length L1 of the mesh portion 10A is substantially equal to the sum of the height T1 of the container body 1 and the height T2 of the lid 2, so that the mesh 10 can be used without waste, the manufacturing cost can be reduced, and the appearance of the sensor container can be reduced. Will be better. Further, when the intermediate molded product 50 is taken out, positioning and holding of the mesh sheet material 22 in the next molding is facilitated, and the mesh sheet material 22 is not rewound onto the tension roll 22A, and tension is applied to the mesh sheet material 22. Therefore, the molding work when manufacturing the sensor container is further facilitated.
[0028]
In the present embodiment, four sensor containers are manufactured at the same time, but the number can be increased as necessary.
[0029]
Moreover, although the roll which supplies the mesh sheet | seat material 22 was comprised as tension roll 22A, the roll which is not equipped with the tension provision mechanism in the mandrel may be sufficient. Even in this case, when the intermediate molded product 50 is taken out, the mesh sheet material 22 can be easily positioned and held in the next molding, so that the molding operation when manufacturing the sensor container is further facilitated.
[0030]
【The invention's effect】
According to the present invention, a single mesh is joined to the open bottom of the container body and the outer surface of the lid in a state where the container body and the lid are separated, and a hinge of the lid is formed at the mesh portion between the container body and the lid. As a result, the molding operation when manufacturing the sensor container is facilitated, and the manufacturing cost is reduced.
[0031]
Further, the mesh can be used without waste, the manufacturing cost is reduced, and the appearance of the sensor container is improved.
[0032]
Furthermore, according to the present invention, the mesh sheet material is inserted into the guide groove so as to cover the first row of the container body molding and the second cavity of the lid molding, and then the mold is closed and the molten resin is injected. Since an intermediate molded product in which a mesh sheet material is bonded to the open bottom of the container body and the outer surface of the lid is formed, the molding work when manufacturing the sensor container becomes easy and the manufacturing cost is reduced. .
[0033]
Moreover, since the positioning and holding of the mesh sheet material in the next molding becomes easy after the intermediate molded product is taken out, the molding operation when manufacturing the sensor container is further facilitated.
[Brief description of the drawings]
FIG. 1 is a perspective view when a lid of a sensor container according to an embodiment of the present invention is opened.
FIG. 2 is a perspective view seen from above when the lid of the sensor container shown in FIG. 1 is closed.
FIG. 3 is a perspective view seen from below when the lid of the sensor container shown in FIG. 1 is closed.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a cross-sectional view of a mold apparatus used in the method for producing a sensor container of the present invention.
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is a partial perspective view of the mold apparatus shown in FIG. 5. FIG.
FIG. 8 is a top view of an intermediate molded product formed by the method for manufacturing a sensor container of the present invention.
FIG. 9 is a top view of a final intermediate molded product formed by the method for manufacturing a sensor container of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container main body 1A Open bottom part 2 of container main body 2 Cover 2A Outer surface 7 of lid | cover 10 Mesh 20 Mold apparatus 20A Movable side 20B Fixed side 21 Movable mold 22 Mesh sheet material 23 Guide groove 26a, 26b, 26c, 26d 1st cavity 27a, 27b, 27c, 27d Second cavity 28A Dummy first cavity 28B Dummy second cavity 41 Fixed mold 50 Intermediate molded product 50a Final intermediate molded product

Claims (2)

In the method of manufacturing a synthetic resin sensor container having a synthetic resin container body having a bottom opened and a synthetic resin lid formed with a window,
(A) A pair of one having a guide groove of the mesh sheet material and a first cavity for forming the container body and a second cavity for forming the lid which are formed in a plurality of rows in the guide groove and are positioned adjacent to each other. Preparing molds for;
(B) opening the pair of molds and inserting the mesh sheet material into the guide groove so as to cover the plurality of rows of first cavities and second cavities;
(C) The pair of molds are closed, molten resin is injected into the first row and second cavities of the plurality of rows, and the mesh sheet material is joined to the open bottom of the container body and the outer surface of the lid Forming a molded article;
(D) opening the pair of molds and taking out the intermediate molded product;
(E) cutting and separating the mesh sheet material between each row of the container body and the lid;
(F) In the procedure (a) for preparing the mold, a dummy that does not inject molten resin into the guide groove portion outside the first cavity and the second cavity row located on the opposite side of the mesh sheet material After forming the first cavity and the second cavity and taking out the intermediate molded product in the step (d), the container formed by the first cavity and the second cavity row located on the insertion side of the mesh sheet material The procedure (b) is performed by putting the main body and the lid into the first and second cavities of the dummy, and then the procedures (c) and (d) are performed. Thereafter, the procedures (b) to (d) are performed. ) Is repeated, and a method for producing a sensor container. The method of manufacturing a sensor container according to claim 1 , wherein in the step (a) of preparing the mold, the first cavity and the second cavity of each row are the sum of the height of the container body and the height of the lid. A method of manufacturing a sensor container, characterized in that the sensor container is disposed adjacent to each other by a distance substantially equal to.

Images