JP2006142626A - Method and apparatus for producing filter element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production method which does not need a process for forming a filter in advance in a required form and inserting it into a mold, has no need to separately provide a process for cutting an excess filter part, cuts the excess filter part during resin molding, is excellent in mass production properties, and can manufacture a filter element easily and cheaply and an apparatus for the method. <P>SOLUTION: The apparatus 1 for producing the filter element has the mold 4 having a core 2 and a cavity 3 for forming the filter element 50 in a desired form, a resin packing means 5 for packing a resin between the core 2 and the cavity 3 while a filter material 20 is arranged, and an ejector pin 6 for demolding an integrated frame material 51 made of a resin and the filter material 20. When the frame material 51 and the filter material 20 are pressed by the ejector pin 6, the filter material 20 is cut in a required shape, and the filter element 50 is manufactured. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

    The present invention relates to a manufacturing method and a manufacturing apparatus for a filter element that includes a resin frame material and a filter stretched on the resin frame material and allows liquid or gas to pass therethrough.

Conventionally, a filter element that is integrally formed by stretching a filter made of a metal material, paper material, or resin material on a resin frame material for shape retention or cartridge formation has been widely used as a part of various products. Has been. For example, there is a filter element 50 shown in FIG. 10 or FIG.
The filter element 50 includes a cylindrical resin frame material 51 and a filter 52 stretched so as to cover the opening on the front end side of the resin frame material 51. It is a part that is attached to the tip of the container in order to exude through.

In this type of filter element, a filter formed in a desired shape is inserted into the mold of a resin molding device, specifically the core side or cavity side, and then the resin is filled between the core and cavity. By doing so, the filter and the resin frame material were welded and integrated. Alternatively, as proposed in Japanese Patent No. 3433375 by the applicant of the present application, the long filter is extended into the mold of the resin molding apparatus and disposed on the core side or the cavity side, and then between the core and the cavity. By filling the resin, the filter and the resin frame material were sequentially integrated.
Japanese Patent No. 3433375

  However, the former method of manufacturing a filter element requires a process of forming the filter in a required form in advance and a process of manually mounting the filter in the mold, which is extremely laborious and unproductive. The cost was a factor. Further, in the latter method, a process of forming the filter in a required form in advance and a process of manually mounting the filter in the mold are unnecessary, but a large number of resin frame materials are attached to the long filter. In this state, an extra filter part had to be cut and removed by a cutting device after resin molding.

  Therefore, an object of the present invention is not to require a step of forming a filter in a required shape in advance and a step of mounting the filter formed in the required shape in a mold, and further a step of deleting an extra filter portion. An object of the present invention is to provide a filter element manufacturing method and a manufacturing apparatus that can be manufactured at a very easy and low cost, without the necessity of providing separately, and the filter element being completed at the time of resin molding, having excellent mass productivity.

  In order to solve the above-mentioned problems, in a mold having a core and a cavity for forming a filter element of a desired form, a filter material is disposed on the core side or the cavity side, and between the core and the cavity. A step in which the resin frame material and the filter material are integrated by being filled with a resin, and a step in which the integrated resin frame material and the filter material are released from the core or cavity; The filter element is characterized in that, when the integrated resin frame material and the filter material are pressed by the eject pin, the filter material is cut into a required shape when the integrated resin frame material and the filter material are pressed by the eject pin. It is a manufacturing method.

  In the step of arranging the filter material on the core side or the cavity side, a long filter material having a width capable of forming a filter surface is transferred and arranged from one end side to the other end side of the mold. It is preferable.

  Moreover, what solves the said subject is the metal mold | die provided with the core and cavity for forming the filter element of a desired form, and the state which arrange | positioned the filter material in the said core side or cavity side between the said core and cavity. A resin filling means for filling the resin, and a resin frame material integrated with the resin filled between the core and the cavity and an eject pin for releasing the filter material from the core or the cavity; The filter element manufacturing apparatus is characterized in that when the resin frame material integrated with the eject pin and the filter material are pressed, the filter material is cut into a required shape to produce the filter element.

  The filter element manufacturing apparatus has a long filter material transferring means for transferring a long filter material having a width capable of forming a filter surface from one end side to the other end side of the mold. It is preferable to have.

According to the first aspect of the present invention, the process of forming the filter in the required form in advance and the process of mounting the filter formed in the required form in the mold are not required, and the extra filter portion is deleted. There is no need to provide a separate process, and the filter element is completed at the time of resin molding. The filter element is excellent in mass productivity, and can be manufactured very easily and inexpensively.
According to the second aspect of the present invention, in addition to the effect of the first aspect, it is not necessary to provide a filter material for each molding, and the filter element can be manufactured more easily and inexpensively with excellent mass productivity.
According to the third aspect of the present invention, it is not necessary to perform the step of forming the filter in the required form in advance and the step of mounting the filter formed in the required form in the mold, and the extra filter portion is deleted. There is no need to provide a separate process, and the filter element is completed at the time of resin molding. The filter element is excellent in mass productivity, and can be manufactured very easily and inexpensively.
According to the fourth aspect of the invention, in addition to the effect of the third aspect, it is not necessary to provide a filter material for each molding, and the filter element can be manufactured more easily and inexpensively with excellent mass productivity.

  According to the filter element manufacturing method or apparatus of the present invention, when the resin-made frame material and the filter material integrated with the resin are pressed by the eject pin, the filter material is cut into a required shape. Is the main feature.

  First, a filter element manufacturing apparatus according to the present invention will be described with reference to an embodiment shown in FIGS. FIG. 1 is a schematic plan view of an embodiment of a filter element manufacturing apparatus according to the present invention, and FIG. 2 is a core side mold board view of the filter element manufacturing apparatus shown in FIG. FIG. 7 is a schematic front view for explaining the operation of the filter element manufacturing apparatus shown in FIG. 1, and FIGS. 7 to 9 are partially enlarged views for explaining the operation of the filter element manufacturing apparatus shown in FIG. It is sectional drawing.

  In the filter element manufacturing apparatus 1 of this embodiment, a mold 4 having a core 2 and a cavity 3 for forming a filter element 50 having a desired form, and a filter material 20 are arranged on the core 2 side or the cavity 3 side. In the state, the resin filling means 5 for filling the resin between the core 2 and the cavity 3 and the long filter material 20 having a width capable of forming a filter surface in the mold 4 are held to hold the mold 4. A long filter material transfer means 7 that can be transferred from one end side to the other end side, a resin frame material 51 and a filter material 20 that are integrated by filling a resin between the core 2 and the cavity 3. It has an eject pin 6 for releasing from the core 2 or the cavity 3, and presses the resin frame material 51 and the filter material 20 in which the eject pin 6 is integrated. Filter material 20 is cut to the required shape is a manufacturing apparatus for filter element filter element 50 is fabricated. Hereinafter, each configuration will be described in detail.

  The filter element manufacturing apparatus 1 is an apparatus for manufacturing a filter element 50 as shown in FIGS. 10 and 11. The filter element 50 includes a cylindrical resin frame member 51 and a filter 52 stretched so as to cover the opening of the front end surface of the resin frame member 51.

  The resin frame material 51 is formed of a molten resin supplied (injected) into the mold 4 from the resin filling means 5 described later, and the filter 52 is formed of the long filter material 20. The long filter material 20 is appropriately selected and used from a metal material, a paper material, a resin material, or the like according to the purpose of use.

  The mold 4 is a part for producing the filter element 50. The resin frame material 51 is molded with resin, the resin frame material 51 and the filter material 20 are integrated in the resin molding, and the filter material 20 has a required shape. As shown in FIG. 1, the core side first mold plate 8 provided with the core 2, the core side second mold plate 9 provided with the eject pin 6, and the cavity 3 were provided. And a cavity side mold board 10. When the resin is filled, as shown in FIG. 5, the core-side first mold plate 8 and the core-side second mold plate 9 are moved to the cavity-side mold plate 10 side, and the cavity-side mold plate is moved. 10 is configured to engage the core 2 and the cavity 3. The reciprocation of the core-side first mold plate 8 and the core-side second mold plate 9 is realized by electrically controlling driving means such as an air cylinder.

  As shown in FIG. 2, a core-side resin molding portion 8a having four cores 2a, 2b, 2c, and 2d is provided in the vicinity of the center of the core-side first mold plate 8, and these cores 2a. , 2b, 2c, 2d are configured in the same form to form filters of the same form. However, the filter manufacturing apparatus of the present invention is not limited to the core side first mold plate having four cores, but widely includes those having one or more cores. Moreover, when it has a some core, it is not limited to what has the core of the same form, The thing which has a core of a different form is also included. Furthermore, the core 2 of this embodiment is configured in a substantially rectangular shape (rectangle with chamfered four corners) in a plan view to form a cylindrical filter element, but is not limited thereto, and is circular. It may have an irregular planar shape such as an elliptical shape or other polygonal shapes.

  On the other hand, a cavity side resin molding part provided at a position corresponding to the core side resin molding part 8a is provided in the vicinity of the center part of the cavity side mold board 10, and the cavity side resin molding part includes a core. Cavities 3 that are paired with 2a, 2b, 2c, and 2d, respectively, are provided.

  The long filter material transfer means 7 has a width capable of forming a filter surface in the mold 4 (in this embodiment, between the core-side first mold board 8 and the core-side second mold board 9). This is for holding the long filter material 20 and allowing it to be transferred from one end side to the other end side of the mold 4.

  The long filter material transfer means 7 of this embodiment is composed of a pair of feeding devices respectively provided near the top and bottom of the core-side second mold plate 9, and this feeding device is a long filter material 20. In the state which hold | maintained, it functions so that the elongate filter material 20 may be sent out intermittently for every resin filling from the upper end side of the metal mold | die 4 toward the lower end side. However, the long filter material transfer means of the present invention is not limited to the form as in this embodiment, and the long filter material is transferred from one end side to the other end side of the mold. A wide range of possible ones is included, and a long filter material is automatically included as needed by moving through a mold.

  In addition, since the filter element 50 has a filter surface only on the tip surface, the long filter material transfer means 7 of this embodiment forms a long filter surface forming a tip side filter surface as shown in FIG. However, the present invention is not limited to this, and in the case of a filter element having a filter surface on the side, the side filter material that forms the side filter surface is held. What is transported as described above is also included in the scope of the present invention.

  Further, the long filter material transfer means 7 of this embodiment has a long shape having a width capable of forming a filter surface between the core side first mold plate 8 and the core side second mold plate 9. The filter material 20 is held and can be transferred from one end side to the other end side of the mold 4, but it is long between the core-side first mold board 8 and the cavity-side mold board 10. What hold | maintains the scale-shaped filter material 20 may be sufficient.

  The resin filling means 5 is for filling the resin between the core 2 and the cavity 3, and as shown in FIG. 1, the injection device 5a and the inside of the cavity side mold plate 10 communicated with the injection device 5a. The sprue runner 5b provided through the gate and the gate 5c provided by branching the tip of the sprue runner 5b are filled with molten resin between the core 2 and the cavity 3 via these. The

  In order to release the resin frame material 51 and the filter material 20 fused and integrated by resin filling from the core 2 or the cavity 3, the eject pin 6 first cuts the filter material 20 to remove the filter 52. At the same time, the integrated resin frame member 51 and the filter 52 are pressed and released.

  Specifically, as shown in FIG. 9, the eject pin 6 moves in the L direction (the axial direction of the filter element to be manufactured) and enters the first mold plate 8 on the core side, and the tip of the eject pin 6 Edge 6a (in this embodiment, a substantially rectangular shape that is the outer shape of the filter 52 of the filter element 50) is formed on the core-side second mold plate 9 side of the core-side first mold plate 8. When inserting through the edge 2a (in this embodiment, a substantially rectangular shape that is the outer shape of the filter of the filter element 50) of the end face of the core 2, the filter material 20 is sandwiched in the gap between the two, thereby ejecting pins. The edge portion 6a at the tip end portion 6 punches the long filter material 20 into a substantially rectangular shape and cuts it. Further, when the eject pin 6 further moves in the l direction, the resin frame material 51 and the filter 52 are pressed from the core 2 and released.

  As described above, in the filter element manufacturing apparatus of the present invention, the eject pin performs not only the mold releasing action but also the cutting action of the filter material. Therefore, it is not necessary to configure a new cutting means in the apparatus. The design of the device is slightly changed. (Specifically, the shape of the edge of the tip of the eject pin is the outer shape of the filter, and the outer shape of the filter that appears on the end surface of the core or cavity on the eject pin placement side. In addition to resin molding and filter tensioning, it is possible to perform cutting of the filter only by allowing the inside of the edge portion to be inserted along the edge portion.

  In this embodiment, since the filter is stretched only on the tip surface of the filter element, the filter material is cut only on the filter on the tip surface, but the filter is stretched on the side wall surface of the filter element. In the case of the one provided, a cutting blade formed so as to protrude along the edge portion of the eject pin is formed at the tip of the eject pin, and the filter material forming the side wall may be cut when pressed. The filter element manufacturing apparatus of the present invention broadly includes those having a structure that cuts the filter material in accordance with the ejecting action of the ejector pin pressing the molded product. Furthermore, the eject pin is composed of a first eject pin and a second eject pin that can reciprocate along the axial direction of the filter element, and one end of the eject pin protrudes along the outer shape (for example, a substantially rectangular shape) of the end edge of the filter. Also included within the scope of the present invention are those having a cutting blade, which functions mainly as a cutting means for the filter material, and the other functions to press and discharge the filter element. Further, as a drive device that can reciprocate the eject pin, a commonly used air cylinder (not shown) that is electrically driven and controlled can be suitably used.

Next, a method for producing the filter element of the present invention will be described.
The method of manufacturing a filter element according to the present invention includes the step of disposing the filter material 20 on the core 2 side or the cavity 3 side in the mold 4 having the core 2 and the cavity 3 for forming the filter element 50 having a desired form. The resin 2 is filled between the core 2 and the cavity 3 and the resin frame material 51 and the filter material 20 are integrated, and the integrated resin frame material 51 and the filter material 20 are the core 2 or the cavity 3. In the step of releasing, the filter material 20 is brought into a required shape when the integrated resin frame material 51 and the filter material 20 are pressed by the eject pin 6. The filter element 50 is produced by cutting.

  More specifically, the manufacturing method of the filter element of this embodiment is such that the long filter material transfer means 7 in a state where the core side first mold plate 8 and the core side second mold plate 9 are separated from each other. The first step of arranging the filter material 20 on the surface of the core side second mold plate 9 by the action of the above, the core side first mold plate 8, the core side second mold plate 9, and the cavity side mold plate 10 To close the mold, and the mold 2 is opened by separating the second step in which the resin is filled between the core 2 and the cavity 3 and the core-side first mold plate 8 and the cavity-side mold plate 10. There is a third step and a fourth step in which the integrated resin frame material 51 and the filter material 20 are released from the core 2. In the fourth step in which the release is performed, an integrated resin frame material 51 is provided. When the frame material 51 and the filter material 20 are pressed by the eject pin 6, the filter material 20 Cut into main shape filter element 50 is fabricated. The filter elements 50 are sequentially formed by repeating these series of steps. Hereinafter, the first to fourth steps will be sequentially described in detail.

  In the first step, as shown in FIG. 3, first, the core-side second mold platen 9 is moved in the direction of the arrow h, and the core-side first mold platen 8 and the core-side second mold platen 9 are separated from each other. Let the state be Then, the long filter material 20 is moved in the direction of the arrow i by the long filter material transfer means 7 and placed on the surface of the core side second mold plate 9. Further, as shown in FIG. 4, the core-side first mold platen 8 is moved in the direction of arrow J to bring the core-side first mold platen 8 and the core-side second mold platen 9 closer to each other. (2) One surface of the core 2 exposed on the mold platen 9 side is covered with a long filter material 20.

  In the second step, as shown in FIG. 5, the core-side first mold plate 8 and the core-side second mold plate 9 are moved in the direction of the arrow k, and the core-side first mold plate 8 and the core-side second plate are moved. The mold platen 9 and the cavity side mold platen 10 are brought close to each other to perform mold closing. Then, the molten resin flows from the cavity 3 side through the sprue runner 5b and the gate 5c from the injection device 5a, and the resin is filled between the core 2 and the cavity 3. A state in which the resin is filled between the core 2 and the cavity 3 is shown in FIG. 7, and the long filter material 20 is stretched on the front end surface of the cylindrical resin frame material 51.

  In the third step, the core-side first mold plate 8 and the core-side second mold plate 9 are moved in the n direction in FIG. 8 to separate the core-side first mold plate 8 and the cavity-side mold plate 10 from each other. Let the mold open. At this time, the integrated resin frame material 51 and the long filter material 20 remain in the core 2.

  In the fourth step, the integrated resin frame material 51 and the filter 52 are released from the core 2. Specifically, as shown in FIG. 6, when the eject pin 6 is moved in the L direction, the eject pin 6 enters the core 3 of the core-side first mold plate 8 from the tip side filter tension side of the molded product. The resin frame material 51 and the filter 52, which are intruded and pressed, are released from the core 3 and dropped as indicated by an arrow m.

  When the integrated resin frame member 51 and the long filter member 20 are pressed by the eject pin 6, the tip of the eject pin 6 functions as a punch as shown in FIG. When the end edge portion 6a of the tip portion of the eject pin 6 is inserted through the end edge portion 2a of the end surface of the core 2 formed on the core side second mold plate 9 side of the core side first mold plate 8. In addition, when the filter material 20 is sandwiched in the gap between the two, the edge 6a of the tip portion of the eject pin 6 punches the long filter material 20 into a required shape and cuts it. Further, when the eject pin 6 moves in the L direction, the integrated resin frame member 51 and the filter 52 are pressed from the core 2 and released, and the filter element 50 including the resin frame member 51 and the filter 52 is released. Is produced. Thereafter, the eject pin 6 moves backward and returns to the initial position (inside the second die plate 9 on the core side), and the filter elements 50 are sequentially mass-produced by repeating these series of steps.

It is the plane schematic diagram of one Example of the manufacturing apparatus of the filter element of this invention. It is a core side metal mold | die surface view of the manufacturing apparatus of the filter element shown in FIG. FIG. 3 is a schematic front view for explaining the operation of the filter element manufacturing apparatus shown in FIG. 1. FIG. 3 is a schematic front view for explaining the operation of the filter element manufacturing apparatus shown in FIG. 1. FIG. 3 is a schematic front view for explaining the operation of the filter element manufacturing apparatus shown in FIG. 1. FIG. 3 is a schematic front view for explaining the operation of the filter element manufacturing apparatus shown in FIG. 1. It is a partial expanded sectional view for demonstrating an effect | action of the manufacturing apparatus of the filter element shown in FIG. It is a partial expanded sectional view for demonstrating an effect | action of the manufacturing apparatus of the filter element shown in FIG. It is a partial expanded sectional view for demonstrating an effect | action of the manufacturing apparatus of the filter element shown in FIG. It is a perspective view of the filter element produced with the manufacturing apparatus of the filter element shown in FIG. It is a longitudinal cross-sectional view of the filter element shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter element manufacturing apparatus 2 Core 3 Cavity 4 Mold 5 Resin filling means 6 Eject pin 7 Long filter material transfer means 8 Core side 1st mold board 9 Core side 2nd mold board 10 Cavity side mold board

Claims (4)

In a mold having a core and a cavity for forming a filter element of a desired form, a step of arranging a filter material on the core side or the cavity side, and a resin frame material in which resin is filled between the core and the cavity And the filter material are integrated with each other, and the integrated resin frame material and the filter material are released from the core or the cavity. The filter element is produced by cutting the filter material into a required shape when the resin frame material and the filter material are pressed by an eject pin. In the step of arranging the filter material on the core side or the cavity side, a long filter material having a width capable of forming a filter surface is transferred and arranged from one end side to the other end side of the mold. The method for producing a filter according to claim 1. A mold having a core and a cavity for forming a filter element of a desired form, and a resin filling means for filling a resin between the core and the cavity in a state where a filter material is disposed on the core side or the cavity side A resin frame member integrated with a resin filled between the core and the cavity and an eject pin for releasing the filter material from the core or the cavity, and the eject pin integrated with the resin The filter element manufacturing apparatus, wherein when the frame material and the filter material are pressed, the filter material is cut into a required shape to produce the filter element. The filter element manufacturing apparatus has a long filter material transferring means for transferring a long filter material having a width capable of forming a filter surface from one end side to the other end side of the mold. The filter element manufacturing apparatus according to claim 3, wherein

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