KR19980020016A - Filter element manufacturing apparatus and method - Google Patents

Abstract

The present invention relates to a method and apparatus for manufacturing a fuel filter element, the bending line is stamped by the stamping means in the center of the width of the filter paper conveyed from the filter paper roll for the filter element, and the concave-convex irregularities by the embossing means in the inner portion of the filter paper After forming a, and then folded the embossed portion along the bend line and wound by a predetermined length to the cylindrical core material to bond the wound filter paper layers to form a plurality of micro-channel in the axial direction of the fuel introduced into the flow path Foreign material is filtered and configured so that only fuel passes through the filter paper.

Description

Filter element manufacturing apparatus and method

The present invention relates to a method and a device for producing a filter element, and more particularly, to a method and a device for producing an element of a paper of a fuel filter for an internal combustion engine.

In general, when the fuel of an internal combustion engine, such as an automobile engine, contains foreign substances such as dust, it causes a failure in the precise injector, and the atomization of the fine particles does not occur in the cylinder, and excessive carbides are generated during combustion. Problems such as increased wear of the inner wall occur. In order to prevent such a problem, a filter containing an element formed by forming a filter paper is used to filter and remove foreign substances contained in the fuel before injecting the fuel of the internal combustion engine.

Conventional automotive fuel filter element was manufactured by winding a paper-shaped rope having a diameter of 3 to 4 mm into the inside while bending the filter paper and rolling it into a roll shape by manually applying an adhesive to the outside thereof. The flow path was formed by removing the inserted rope before assembling it. In this manufacturing method, the work of inserting the rope of the paper material to form the fuel oil and applying the adhesive to the outer surface was performed manually, resulting in low work efficiency, and the fuel flow path formed by the insertion of the rope of the paper material was poor and was bent when used. The filter papers stuck together were not only short in life but also had a low filtration effect.

The present invention provides a filter element manufacturing method and apparatus for manufacturing a filter element in a series of continuous processes while embossing the formation of a fuel passage to solve the problems associated with the conventional fuel filter described above.

1 is a plan view schematically showing a continuous process of the filter manufacturing method according to the present invention.

2 is an axial front view showing the structure of the filter element made according to FIG.

3 is a front view of the filter manufacturing apparatus according to the present invention.

4 is a right side view of the manufacturing apparatus of FIG.

5 is a front view of the bending line marking means of the third FIG. Device;

6 is a front view of the embossing means of the FIG. 3 device;

7 is an exploded perspective view of the pressing means of FIG.

8 is a perspective view of a modification of the knife member shown in FIG.

9 is a perspective view of the guide member using state of the modification shown in FIG.

* Description of the symbols for the main parts of the drawings *

10: filter paper 11, 12: roller

13: stamping means 14: stamping roller

16: embossing means 17: bending means

19: winding means 20: element

21: Euro 23, 24: Roller

26, 26´: Gear 29: Uneven portion

25, 30: adjusting device 31: knife member

33: core 36: headstock

37: tailstock 43: injection device

51: injection nozzle

The filter element manufacturing method of the present invention for achieving the above object is a step of stamping the bent line in the center of the width of the filter paper conveyed from the filter paper roll for filter element, forming a concave-convex irregularities in the half of the filter paper in the longitudinal direction Towing, bending to fold half of the embossed filter paper, winding the bent filter paper to a cylindrical core by a predetermined length, and bonding the filter paper layers wound in the filter paper winding step to seal the axial direction. It includes a sealing step.

In addition, the filter element manufacturing method of the present invention, the supply means for feeding the filter paper from the filter paper roll, the imprinting means for stamping the bent line in the longitudinal direction in the center of the width of the conveyed filter paper, giving the wavy concave-convex portion to the half width of the filter paper Embossing means for conveying the filter paper, bending means for folding and folding the embossed filter paper about the bend line, means for winding the bent filter paper in a cylindrical core material, and gluing the filter paper wound in the core material in an axial direction. It is achieved by a filter element manufacturing apparatus comprising an adhesive supply means for sealing to form a plurality of micro-channels extending to the.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in detail the present invention.

1 is a plan view schematically showing a method for producing an element of a paper for a fuel filter according to the present invention. The filter paper 10 wound in a rolled state is guided and transported so that both ends thereof are aligned by two pairs of guide rollers 11 and 12.

Imprinting means 13 is disposed after the guide rollers 11 and 12, and the imprinting means 13 includes a lower roller and an upper roller having a protrusion 15 formed therein so that the filter paper 10 passes through the rollers. While pressed by the protruding portion 15, the bent line in the longitudinal direction at the center of the width of the filter paper is imprinted so that the filter paper can be easily folded.

The filter paper in which the bent line is imprinted is embossed with the corrugated irregularities by the up and down rollers in which the gear of the embossing means 16 is formed at one half of the bent line. The half embossed filter paper 10 is conveyed by the rotation of the engaged upper and lower rollers and is bent by the bending means 17 so that the embossed portion of the filter paper is placed on the non-embossed portion and pushed to the pressing means 18. Make sure that the bent filter paper is not extended again.

The bent filter paper 10 is wound by a winding means 19 in a cylindrical core material by a predetermined length, in which case an adhesive is continuously applied to one side of the surface of the filter paper 10 wound on the core material and rolled up on the core material Is sealed about the axial direction.

The fuel filter paper manufactured by the above manufacturing method, the element 20 is manufactured by an automated consistent process, and as shown in FIG. 2, an unembossed portion is placed on the embossed portion of the filter paper 10. A plurality of micro-channels 21 are formed in the axial direction by bonding and embossing, and the fuel flowing into the filler 21 flows when the end of the channel 21 is sealed at the folded portion of the filter paper 10. Since it is discharged through the filter paper, all foreign substances contained in the fuel are removed, and the effect of removing foreign substances is greatly increased.

3 and 4 are a front view and a right side view of the filter element manufacturing apparatus of the present invention for performing the manufacturing method. Referring to Figure 1 will be described in detail the filter element manufacturing apparatus shown in FIG. 3 and FIG. The filter paper 10 is released from the filter paper roll 22 so that both ends of the filter paper are aligned by two pairs of guide rollers 11 and 12 having flanges formed at both ends thereof. Subsequently, the stamping means 13 and the embossing means 16 are provided in order in the feed direction of the filter paper 10.

As shown in FIG. 1, the stamping means 13 is disposed on the bottom of the filter paper 10 fed from the guide rollers 11 and 12 and is supported by a lower roller 23 and an upper roller disposed on the upper surface of the filter paper. In the center of the lower roller 23, the projections 15 are formed in an annular shape, and the projections 15 are triangular in cross section with the edges of the filter paper 10 with respect to the upper rollers 24. Press to stamp the bend line. The upper roller 24 is preferably formed of a plastic material to facilitate the stamping of the bend line.

In addition, the upper roller 24 is in close contact with the filter paper 10 on the lower roller 23, the gap between the upper roller 24 relative to the lower roller 23 to prevent the filter paper from being transported or torn. Spacing device 25 is provided to adjust. Therefore, the adjustment device 25 adjusts the distance between the lower roller 23 and the upper roller 24 in view of the type of filter paper 10 and the feed rate required in response to a change in thickness according to the working environment (temperature, humidity). Can be adjusted easily.

As shown in FIG. 6, the embossing means 16 disposed after the marking means 13 includes upper and lower rollers 27 and 28 meshed with each other by gears 26 and 26 ′ formed at one half. Thus, the lower roller 28 is connected to the motor and driven. Therefore, as the upper and lower rollers 27 and 28 engage and rotate, one side half of the filter paper 10 transported therebetween is embossed with a wavy portion 29 corresponding to the teeth of the gears 26 and 26 '. do. Since the filter paper 10 is conveyed by the gears 26 and 26 'being engaged and rotated, the embossing means 16 functions to convey the filter paper 10 while embossing it. Although the power of the gears is formed so that irregularities of the shape corresponding to the teeth are formed in the filter paper while the filter paper is prevented from being torn by the undercut of the gears 26 and 26 'in the process of being embossed between the gears 26 and 26'. And the gears 26 and 26 'are in all positional differences even if the rotational transfer characteristics are deteriorated. Nevertheless, there is provided an adjusting device 30 for adjusting the distance of the upper gear 26 to the lower gear 26 'so as to adjust the pressure value in response to the variable according to the material and thickness of the filter paper.

The filter paper 10 having the uneven portion formed in one half by the embossing means 16 is a bending means 17 to fold the embossed portion along the bending line of the center width, as shown in FIG. The outer periphery disposed at the portion where the flow direction is changed includes a rounded knife member 31 and a guide member 32 disposed before it. The guide member 32 lifts the embossed portion of the filter paper 10 which is embossed and transported so that the bent line of the bottom surface of the filter paper 10 contacts the outer edge of the knife member 31, wherein the filter paper 10 is The outer embossed portion of the filter paper 10 is folded over the inner unembossed portion by the force of winding the filter paper in the winding means 19 described later. However, as usual, the outer embossed portion of the filter paper 10 in the knife member 31 is folded over the inner unembossed portion. However, since the folded state of the filter paper 10 in the knife member 31 as described above is pressed by the pressing means 18 so that the filter paper 10 is conveyed in a folded state along the bending line.

As shown in Fig. 7, the pressing means 18 is a filter paper guide plate 18 'which is pivotably mounted on both sides of a central portion on a support 18' disposed on both sides of a passage through which the filter paper is conveyed. Grooves are formed on the protrusions projecting upward from both sides, and the bent filter paper passing through the guide plate is pressed by the weight of the push bar, including a push bar (18˝) disposed at predetermined intervals with the guide plate in the groove. At this time, when the push bar and the guide plate are spaced apart and the embossed portion of the filter paper passes, the push bar is disposed to move up and down in the groove so that the convex-convex portion 29 is not extended and the filter paper is maintained in a bent state. The guide plate is pivoted so that the filter paper is wound by the winding means 19 so as to accommodate the angular change in which the filter paper is transported as the diameter of the element increases, so that the uneven portion 29 of the filter paper is not damaged. .

FIG. 8 shows a knife member 31 ′ of another embodiment, and FIG. 9 shows a guide member 32 ′ which makes the bending of the filter paper 10 more secure and pre-bending the filter paper prior to the knife member. .

The bent filter paper 10 is wound around the core 33 by the winding means 19 to complete the paper roll element 20. The cutting means 19 includes a headstock 36 which is driven by a belt 35 connected to the motor 34, and a tailstock 37 which is movable to adjust a distance to the headstock 36. . The headstock 36 is provided with a live center 38 and the tailstock 37 is provided with a dead center 39 disposed on the same center line as the live center 38 to support the core material 33. . In addition, the headstock 36 and the tailstock 37 are provided with face plates 40 and 41, respectively, to guide the side portions of the bent filter paper 10 wound around the core material 33. The tailstock 37 is movable left and right in FIG. 1 by the pneumatic cylinder 42. An operator inserts one hole of the filter paper winding core 33 into the live center 38 of the headstock, and then places the tailstock 37 close to the headstock 36 so that the dead center 39 of the core material 33 is located on the other side of the core 33. The core 33 is set by being fitted in the hole. When the face plate 40 and the live center 38 of the headstock 36 are rotated by the motor 34, the dead center 39 and the face plate 41 of the tailstock 37 are rotated together to form the core material 33. As it rotates, the filter paper 10, the end of which is previously fixed to the core 33 with an adhesive, is wound as shown in FIG.

At this time, the filter paper 10 is wound in such a way that the embossed portion having the uneven portion 29 formed on the unembossed portion is disposed, for example, by injecting a molten polyester adhesive into the upper surface of the unembossed portion, The embossed portions of the wound filter paper are combined so that a large number of fine flow passages 21 in the axial direction are formed. For this purpose an adhesive injection device 43 is provided adjacent the winding means 19.

The adhesive injection device 43 is a pneumatic cylinder 45 having two piston rods mounted on the bracket 44 fixed to the base, and a first pneumatic mounted on the bracket 46 fixed to the piston rod end. The cylinder 47, the second pneumatic cylinder 49 mounted on the bracket 48 fixed to the piston rod end of the pneumatic cylinder 47, the support plate 50 fixed to the piston rod end of the pneumatic cylinder 49 The support plate 50 is also fixed to the end of the rod 52 which is slidably supported in the brackets 46 and 48, including the adhesive injection nozzle 51 mounted in the Support the pneumatic cylinder (49). The polyester adhesive injected from the nozzle 51 is supplied in a molten state by heating the solid body in the applicator 52.

Injection of the adhesive is carried out as follows. The pneumatic cylinder 45 is operated so that the injection nozzle 51 is disposed directly above the core 33 fixedly arranged between the main shaft 36 and the tailstock 37 so that the piston rod is advanced. 48) in the longitudinal direction to the core 33, the first pneumatic cylinder 47 is operated to move the second bracket 48 in the transverse direction one step, and then the second pneumatic cylinder 49 is operated to The injection nozzle 51 is moved from the position close to the outer end of the core 33 surface to the position adjacent to the inner end while injecting the molten adhesive to fix the filter paper end to the core 33, and the injection nozzle 51 is the core ( While continuously injecting the adhesive in a fixed position near the inner end of 33), as the core is rotated, the adhesive is applied onto the bottom of the filter paper 10, i. Filter paper layer As the pierced part is wound are integrally fixed by an adhesive. The position of the injection nozzle 51 with respect to the core 33 is adjustable according to the size of the element required according to the type of fuel filter, and the type of adhesive may be differently selected depending on the filter paper for the filter element.

As described above, the filter paper is wound on the core material 33 with the adhesive from the injection nozzle 51 and wound up by a predetermined length. Then, the filter paper 10 to be fed is cut and the end thereof is nozzle of the second injection device 53. The filter element of FIG. 3 is completed by attaching and finishing with the adhesive injected from 54. FIG. The injection nozzles 51 and 54 of the injection devices 43 and 53 are injected by the pneumatic devices 55 and 56 to inject the adhesive in the molten state, respectively, and are operated by a switch of a control panel not shown.

According to the present invention, the bending line is imprinted by the imprinting means 13 along the longitudinal center of the filter paper for the filter element, and the embossing means 16 emboss the wavy irregularities on one side of the filter paper, and then the bending means 17 (B) bending the embossed portion and rotating the core material in the winding-up means while winding the bent filter paper to form a filter element in which a plurality of micro-channels extending in the axial direction are manufactured in a continuous process, thus improving productivity. Since the composition is not complicated, the manufacturing cost is low and the reliability of the operation is increased, so that the quality of the filter element is uniform, thereby improving the reliability of the product.

The present invention is not limited to the above-described embodiment, in various parts by those skilled in the art without departing from the technical spirit of the present invention, for example, pneumatic device may be changed to a hydraulic device or an electric motor. In addition, the support structure of the injection nozzle may also be changed as necessary, the present invention is limited only by the appended claims.

Claims (13)

Stamping a bend line in the center of the width of the filter paper conveyed from the filter paper roll for the filter element, Embossing to form wavy irregularities on half of the filter paper imprinted in the longitudinal direction, Bending the half of the embossed filter paper to be folded, Winding the bent, folded sheet of paper on a cylindrical filter element core by a predetermined length; A filter element manufacturing method comprising the step of adhering the filter paper layer wound in the filter paper winding step in the axial direction. The method of claim 1, wherein the step of bending the filter paper is embossed portion of the filter paper by changing the direction of bending the filter paper conveying direction while the filter paper is lifted by the guide member and the knife member is disposed at the bending line of the bottom of the filter paper. The filter element manufacturing method characterized in that the folded and bent. The method of claim 1, wherein the sealing step is performed by injecting an adhesive from the injection nozzle onto the surface of the filter paper while the bent filter paper is wound on the core material. Supply means for feeding filter paper from the filter paper roll, imprinting means for imprinting a bent line in the longitudinal direction at the center of the width of the conveyed paper, embossing means for conveying the filter paper while giving a wavy portion to the width half of the filter paper, embossed Bending means for bending and folding filter paper about the bend line, means for winding the bent filter paper into a cylindrical core material, and adhering the filter paper wound around the core material to form a plurality of microchannels extending in the axial direction. Filter element manufacturing apparatus comprising an adhesive supply means for sealing. 5. The filter element manufacturing apparatus according to claim 4, wherein the bending line marking means includes an imprinting roller having an annular projection for imprinting at its center and a support roller contacting the imprinting roller. 5. The filter as claimed in claim 4, wherein the embossing means comprises upper and lower rollers each having a gear part of all positions formed therein so as to form an uneven portion of a wave in one side half of which the bent line of the filter paper is imprinted. Element manufacturing apparatus. 7. The filter element manufacturing apparatus according to claim 5, wherein at least one pair of guide rollers having flanges formed at both ends is arranged to align both ends of the filter paper conveyed to the front side of the stamping means. According to claim 5 or 6, wherein the adjusting device is provided to adjust the gap between the stamping roller and the support roller of the stamping means according to the type and thickness of the filter paper to be processed, and the embossing means is provided in the upper and lower roller gear portion Filter element manufacturing apparatus characterized in that the adjusting device is provided to adjust the degree of engagement. 5. The method of claim 4, wherein the bending means includes a lower knife member so that the rounded outer edge is arranged at the bend line at the portion where the filter paper conveying direction is changed and is bent by the conveying force of the filter paper, and the uneven portion of the filter paper is not damaged. And a guide plate pivotally mounted on the support portion to secure the bent state, and pressing rods spaced a predetermined distance therefrom. 5. The filter paper winding means according to claim 4, wherein the filter paper winding means has a rotatable face plate having a live center fitted to one end of the element core and is driven by a motor, and a dead center fitted to the other end of the core is formed and rotatable. The filter element manufacturing apparatus, characterized in that the filter paper is wound up as the core is rotated, including a tailstock having a face plate and horizontally mounted tailstock to adjust the distance to the face plate of the headstock. 11. The filter element manufacturing apparatus according to claim 10, wherein a pneumatic cylinder is provided to horizontally move the tail stock. The injection nozzle of claim 4 or 10, wherein the sealing means comprises: an injection nozzle disposed above the core by a bracket such that the filter paper, which is continuously wound by injecting an adhesive on the upper surface of the filter paper wound on the specimen by the winding means, is integrally attached; Filter element manufacturing apparatus comprising an adhesive injection device having a drive means for changing the position of the injection nozzle in the horizontal and vertical direction. 13. The apparatus of claim 12, wherein the injection nozzle driving means is mounted on a bracket fixed to the base to move the injection nozzle in the longitudinal direction and a bracket fixed to the piston rod to move the injection nozzle laterally. Filter element manufacturing apparatus comprising at least one pneumatic cylinder.