KR101459747B1 - laser cutting and welding based method of preparing fuel filter, and computer-readable recording medium for the same - Google Patents

Abstract

The present invention relates to a method for manufacturing a fuel filter which prevents poor inventories stocks through a flow control, and, particularly, to a method for manufacturing a fuel filter capable of controlling a flow of processes through the steps of: forming a standard of a filter cloth and needed through holes through a laser module operating according to previously set programming; inserting the filter cloth into an injection molding machine for injection-molding; and cutting the boundary of the injection-molded part through the laser module operating according to the previously set programming, so as to naturally block the next process when there is an error in one process during the flow of the processes. The method for manufacturing a fuel filter can control a flow of the processes to stop all processes when there is an error in one process by carrying out the flow processes of the device operating according to the previously set programming, thereby preventing poor inventories in large quantities.

Description

TECHNICAL FIELD The present invention relates to a method of manufacturing a fuel filter based on laser cutting and fusing, and a computer-readable recording medium therefor,

The present invention is a technique for manufacturing a fuel filter capable of flow control to prevent defective inventory. More particularly, the present invention relates to a laser module for forming a standard of a filter cloth through a laser module operating according to preset programming, forming a necessary through hole, inserting a filter cloth into an injection molding machine and performing injection molding, The present invention relates to a fuel filter manufacturing technique capable of flow control so that the progress of a next process is naturally blocked when an error occurs in one process by performing a flow process of performing laser cutting with an insert injection molded portion as a boundary.

A fuel pump is formed inside the fuel tank of the vehicle. The fuel pump pumps the fuel in the fuel tank to a predetermined pressure in a state where the fuel tank is located in the fuel tank, and supplies the fuel to the engine.

A fuel filter is provided at a lower portion of the fuel pump, which filters foreign matter in the fuel sucked in pumping the fuel pump to maintain the durability of the engine and the fuel pump.

In recent years, the filter cloth of a vehicle fuel filter is usually composed of a non-woven fiber or a woven screen mesh, and the filter cloth must be connected to a fuel pump and subjected to a processing process for application as a fuel filter.

Conventionally, in the process of manufacturing a fuel filter using a filter cloth, a hole is formed in a web of a filter fabric composed only of synthetic fibers, or a blade punching machine (e.g., a Thomson press) Respectively.

For this reason, there is a disadvantage that the proportion of the fuel filter is increased by manual operation in the manufacturing process of the fuel filter. In the punching of the blade punching machine, many fine particles are generated at the cut- There was also a disadvantage that fine particles in the incised rim mixed with the fuel.

In the process of cutting a hole or a rim of a filter cloth by using a blade punching machine, the filter cloth is manually inserted into a blade punching machine when the blade punching machine is vertically stroked, and the process is repeated. Thus, a fatal accident often occurs in the hands of a worker There was also a problem.

In addition, since each process for manufacturing the fuel filter is conventionally performed in the past, if a mass produced in one process leads to an unsuitable defect in the next process, a large amount of the product produced in the previous process must be discarded There was also a big problem.

1. Fuel filter for automobile fuel pump and manufacturing method thereof (Patent application No. 10-2008-0076642)

2. A method of manufacturing a fuel filter filter unit by high frequency welding, a method of manufacturing a fuel filter having the filter unit, a filter unit and a fuel filter manufactured by the method (patent application 10-2008-0012175)

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a laser cutting method and a laser cutting method capable of stopping an entire process in case of a single process error by performing a flow process of an apparatus operating according to preset programming And to provide a fusion-bonding-based fuel filter manufacturing method.

In order to achieve the above object, there is provided a method of manufacturing a fuel filter based on laser cutting and fusing according to the present invention, comprising the steps of: (a) inserting a filter cloth into an injection molding machine and injection- (b) injection-molding a closed-width fusion-bonded portion of a predetermined width to the filter cloth corresponding to the outer periphery of the fuel pump connection portion on the basis of the fuel pump connection portion while the filter cloth is inserted in the injection molding machine; (c) folding the filter cloth so as to laminate the mutually opposed closed fusion-bonded portions by folding the jig in a state that the filter cloth is fixed to one surface of the jig; (d) adding a closed fusion-bonded part to the filter cloth in a laminated state to integrally join the closed fusion-bonded part; (e) laser cutting a laser module operating in a predetermined pattern with a closed fused portion stacked so that the closed fusion portion is the outermost frame of the filter fabric.

The jig includes an opening formed by cutting the center so as to correspond to the closed fusion-bonded portion, a projecting pin formed on the one surface of the jig, and a fitting hole in which the projecting pin is engaged and fixed when folded in half, (A-1) cutting the filter cloth to a desired size; (a-2) forming a through-hole through the filter cloth corresponding to the fuel pump connection portion in a vertical direction; (a-3) forming at least one second through-hole in the filter cloth so as to fix the filter cloth to the projecting pin.

The cutting in steps (a-1) to (a-3) is preferably laser irradiation of the second laser module operating in a predetermined pattern.

In order to control the operation pattern of the second laser module, specifications for the cutoff of the filter cloth before the step (a-1) to step (a-3), specifications for the through hole and the size of the second through hole, .

Meanwhile, it is preferable that programming is performed in advance of the moving position of the laser module and the laser irradiation position before step (e) so as to irradiate the laser while moving along the closed fusion-bonded part where the laser module is stacked.

The laser cutting and fusing-based fuel filter manufacturing method according to the present invention has the following advantages.

(1) By performing a flow process of an apparatus operating according to preset programming, it is possible to control the flow so as to stop the entire process in advance in case of a single process error, thereby preventing a large amount of defective stocks.

In other words, since each process for manufacturing a fuel filter is conventionally performed, if a mass produced in one process leads to an inadequate product in the next process, it is necessary to discard a large amount of product produced in the immediately preceding process Has been overcome by the flow control of the present invention.

(2) The efficiency of the fabrication process can be improved by processing the filter cloth using an apparatus that operates according to preset programming.

(3) It is possible to easily change the processing pattern of the filter fabric by only programming modification for controlling the operation of the apparatus.

(4) By forming the standard of the filter cloth, the through hole and the second through-hole through the laser cutting, the particles of the filter cloth caused by the punching process for the existing filter cloth can be prevented in advance.

(5) Overcome the conventional problem of a fatal accident to the body of a worker by manually inserting and removing a blade punching machine (e.g., Thomson press) filter cloth when cutting a filter cloth size or a hole.

(6) In the case of changing the size and shape of the cutter of the filter cloth, when the conventional blade punching machine is employed, the mold of the blade punching machine must be replaced accordingly. On the other hand, since only the operation control programming of the laser module needs to be changed, Overcoming the conventional disadvantages of replacement.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary view showing a fabric of a filter cloth to be cut by a second laser module of the present invention. Fig.
FIG. 2 is an exemplary view showing a filter fabric cut by a second laser module of the present invention. FIG.
3 is an illustration of an insert injection molding state of a filter cloth through an injection molding machine according to the present invention.
Fig. 4 is an illustration showing a filter cloth of Fig. 3 and a jig for fixing the filter cloth on one surface. Fig.
Fig. 5 is an example immediately before folding the jig in half with the filter cloth of Fig. 3 fixed on one side of the jig. Fig.
Fig. 6 is an exemplary diagram showing a state in which the filter cloth is folded in half in the state of Fig. 5 and the filter cloth is folded in two folds. Fig.
7 is a view showing an example of a filter fabric in which a laser module is laser-cut with a closed fused portion laminated in two stages in Fig. 6 as a boundary. Fig.
8 is a flowchart showing a process of manufacturing a fuel filter in a semi-automated process according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exemplary view showing a cloth end of a filter cloth to be cut by a second laser module of the present invention, and FIG. 2 is an illustration showing a filter cloth cut by a second laser module of the present invention .

Referring to FIGS. 1 and 2, the fabric used in the laser cutting and fusing-based fuel filter manufacturing method according to the present invention includes various synthetic resin materials, but preferably an on-woven fiber is used .

The filter fabric 200 of FIG. 1 is placed on the second laser module (not shown) and the laser is irradiated to cut the filter fabric 210 to a size suitable for the fuel filter (FIG. 2) 210). ≪ / RTI > At this time, it is preferable that the through hole 211, which is the portion through which the fuel filter connection portion 213a is insert injection molded, and the second through hole 212, which is fitted to the projecting pin 120 of the jig 100, are simultaneously cut.

FIG. 3 is a view illustrating an insert injection molding state of the filter cloth through the injection molding machine according to the present invention, FIG. 4 is an illustration showing a filter cloth of FIG. 3 and a jig for fixing the filter cloth on one surface, [Fig. 5] is an example immediately before folding the jig in half in a state where the filter cloth of Fig. 3 is fixed on one side of the jig.

Referring to FIG. 3, the filter fabric 210 is subjected to primary processing as described above before being placed on the jig 100, and then subjected to a secondary processing step of insert injection molding through an injection molding machine. That is, as an example of the secondary processing, the closed fusion portion 213a, the fuel filter connection portion 213b, and the support fusion portion 213c are formed.

The filter fabric 210 having undergone the primary processing and the secondary processing is seated on one side of the jig 100 as shown in FIGS. 4 and 5, and then folded in half.

Referring to FIGS. 4 and 5, it is preferable that the jig 100 is manufactured by successively forming two planks so that the jig 100 can be folded in half. The jig 100 having the two planks connected thereto is configured such that each of the planks is folded with respect to the pivot pin by connecting the pivot pin to the end of each plank.

At this time, the openings 110 are formed at the central portion where the planks come into contact with each other. Preferably, the openings 110 are formed inside the pair of pivot pins.

The opening 110 is formed in the same shape as the closed fused portion 213a of the filter cloth 210 and is formed so as to be larger than the rim of the closed fused portion 213a .

It is preferable that protruding fins 120 are formed at edges of the respective planks corresponding to one surface of the jig 100. The projecting pin 120 is engaged with the second through hole 212 formed in the filter fabric 210 so that the filter fabric 210 is fixed without being slipped in a state of being placed on one surface of the jig 100.

It is preferable that the fitting hole 130 is formed in the edge portion of each of the planks facing the projecting pin 120. When the jig 100 is folded in half, the insertion hole 130 is inserted into the insertion hole 130 at a position opposite to the insertion hole 130 to fix the jig 100 in a folded state.

FIG. 6 is an exemplary view showing a state in which the filter cloth is folded in two by folding the jig in half in the state of FIG. 5, and FIG. 7 is a sectional view of the closed type FIG. 8 is an illustration showing an example of a filter fabric in which a laser module is laser-cut with a fused portion as a boundary.

As shown in FIG. 6, when the jig 100 is folded in half, the filter fabric 210 together with the jig 100 is folded in half, and the filter fabric 210 is folded to form a closed fusion- 213a are also folded into two layers.

When the filter cloth 210 is folded in such a manner that the closed fusion-bonded portions 213a are laminated in two stages, when the fusion filter is inserted into the fusion splicer (not shown), the fusion- ) Are integrally bonded to each other, and at the same time, the two-stage stacked support fused portion 213c is integrally bonded.

Next, when the laser is irradiated along the closed fused portion 213a to which the laser module is integrally coupled, a pocket type fuel filter is completed as shown in FIG.

On the other hand, the fusion machine can be configured to apply high-frequency heat or irradiate ultrasound to the folded filter fabric 210 so that the closed fusion-bonded portions 213a are stacked in two stages.

FIG. 8 is a flowchart illustrating a process of manufacturing a fuel filter of a semi-automated process according to the present invention. The fuel filter manufacturing process of the semi-automated process according to the present invention will be described in detail with reference to FIG.

S110: First, the jig 100 is folded in a state where the filter fabric 210 is fixed. The jig 100 is manufactured by successively cutting two planks so as to be foldable in half. The jig 100 having the two planks connected thereto has a structure in which each of the planks is folded with respect to the pivot pin by connecting pivot pins to the side ends of the planks.

At this time, the openings 110 are formed at the central portion where the planks come into contact with each other. Preferably, the openings 110 are formed inside the pair of pivot pins.

A projecting pin 120 is formed on a rim of each board corresponding to one surface of the jig 100. The projecting pin 120 is formed in a state in which the second through hole 212 formed in the filter fabric 210 is fitted The filter cloth 210 is fixed so as not to slip in the jig 100. [

In addition, a fitting hole 130 is formed at a rim portion of each board facing the projecting pin 120. When the jig 100 is folded in half with the second through hole 212 of the filter fabric 210 sandwiched between the projecting pins 120, the projecting pins 120 are fitted into the fitting holes 130 facing each other, The jig 100 is kept fixed to the jig 100 while folded together with the jig 100 in two layers.

S120 and S130: A jig 100 for fixing the filter fabric 210 is provided and on the other hand, the filter fabric 210 to be fixed to the jig 100 is subjected to primary processing (for example, bleach opening, In order to implement the primary processing of the filter fabric 210 semi-automatically, it is programmed to control the operation of the second filter low module (not shown).

When the filter fabric 200 of FIG. 1 is placed on the second laser module after programming to control the operation of the second laser module, the laser irradiation part of the second laser module moves up, down, 200 are irradiated with a laser beam to cut a single filter fabric 210 from the filter fabric 200 and then cut into a boundary line 211 of a portion corresponding to the through hole 211 and the second through hole 212 in each filter fabric 210, The laser light is irradiated to form a through hole 211 and a second through hole 212.

S140: It is preferable that a mold of an injection molding machine (not shown) is prepared in advance for secondary injection molding of the filter fabric 210 (for example, insert injection molding) so as to correspond to insert injection molding.

3, the filter cloth 210 is inserted into the primary injection molding part 210 while the injection part of the injection molding machine is moved up and down, front and back, left and right with the filter cloth 210 of FIG. 2 inserted in the injection molding machine 213).

Specifically, a closed fused portion 213a is formed in the filter cloth 210 through the insert injection molding, then the fuel filter connection portion 213b is formed, and the fuel filter connection portion 213b is stably fixed to the filter cloth 210 So as to form a supporting fused portion 213c which is connected to the fuel filter connection portion 213b.

S150: The filter fabric 210 having the insert injection molding part 213 is laminated on one side of the jig 100 on which the projecting pin 120 and the fitting hole 130 are formed as shown in FIGS. 4 and 5 do.

At this time, the second through hole 212 formed in the filter fabric 210 is fixed to the jig 100 so as to be held in a state of being tightened by the projecting pin 120.

It is preferable that the rim of the opening 110 formed in the jig 100 is formed so as to be located adjacent to the closed fused portion 213a along the closed fused portion 213a formed in the filter cloth 210 .

When the jig 100 is folded in half as shown in FIG. 6, the filter fabric 210 is folded in half with the jig 100. When the filter fabric 210 is folded, The fused portion 213a is also folded in two layers.

Therefore, it is preferable that the closed fused portion 213a formed in the filter fabric 210 is symmetrically realized on the basis of the folded line of the filter fabric 210.

Since the closed fused portion 213a folded in two folds is exposed to the outside through the opening portion 110 of the jig 100, the fused bonding through the heat of the high frequency or the ultrasonic irradiation and the laser cutting by the laser module Lt; / RTI >

S160: When the folded jig 100 is inserted into the fusing device (not shown) in a state where the closed fused portions 213a are laminated in two stages, the fusing device is arranged in a position corresponding to the opening 110 of the jig 100, The closed fusion-bonded portions 213a, which are laminated in two stages in parallel with the irradiation of heat or ultrasonic waves, are simultaneously integrally joined, and at the same time, the two-stage bonded fusion-bonded portions 213c are integrally joined.

Here, it is preferable that the supporting fused portions 213c formed on the filter fabric 210 are symmetrically symmetrical with respect to the fold line of the filter fabric 210. [

On the other hand, in the case where the portion corresponding to the opening portion 110 of the jig 100 is irradiated with high-frequency heat or ultrasonic waves, the portion corresponding to the fuel filter connecting portion 213b protruding from the surface of the jig 100 It is possible to prevent the fuel filter connection portion 213b from being crushed during the pressing operation of the filter cloth 210 through the fusing unit.

S170 and S180: The closed type fused portions 213a stacked in two stages in a folded state of the filter fabric 210 are moved along the closed fused portion 213a stacked in two stages in a state where the closed type fused portions 213a are integrally joined And the laser module is controlled so as to control the moving position of the laser module and the laser irradiation position so as to irradiate the laser.

When the folded jig 100 of FIG. 6 is placed on the laser module after programming to control the operation of the laser module, the laser irradiation part of the laser module moves upward, downward, A laser is irradiated and a pocket type fuel filter is completed as shown in FIG.

As shown in FIG. 8, since the present invention is a flow process in which the process performed in each step is directly connected to the next process, if an error occurs in one process (for example, a cutting process in the filter fabric by the second laser module) (Eg insert injection molding with an injection molding machine) (eg if the filter fabric cut from the second laser module does not meet the pre-set criteria, And the operation is not performed), it is possible to prevent mass production of defective members in large quantities.

In other words, since each process for manufacturing a fuel filter is conventionally performed, if a mass produced in one process leads to an inadequate product in the next process, it is necessary to discard a large amount of product produced in the immediately preceding process Has been overcome by the flow control of the present invention.

The present invention can also be embodied in the form of computer readable code on a computer readable recording medium. At this time, the computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage, and the like, and may be implemented in the form of a carrier wave . The computer-readable recording medium can also be stored and executed by a computer-readable code in a distributed manner on a networked computer system. And functional programs, codes, and code segments for implementing the present invention can be easily deduced by programmers skilled in the art to which the present invention belongs.

100: jig
110: opening
120: projecting pin
130:
200: Filter cloth fabrics
210: filter cloth
211: Through hole
212: second through hole
213: insert injection molding section
213a: closed fused portion
213b: fuel filter connection
213c:

Claims (6)

(a) injecting a filter cloth into an injection molding machine and injection-molding a fuel pump connection part into a filter cloth;
(b) injection-molding a closed fused portion of a predetermined width to the filter cloth corresponding to the outer periphery of the fuel pump connection portion based on the fuel pump connection portion in a state where the filter cloth is inserted in the injection molding machine;
(c) folding the filter cloth so as to stack the closed fusion-bonded portions mutually opposed by folding the jig in a state where the filter cloth is fixed to one surface of the jig;
(d) applying heat to the filter cloth in a state in which the closed fusion-bonded portion is laminated to integrally join the closed fusion-bonded portion;
(e) laser cutting a laser module operating in a predetermined pattern around the closed fusion-bonded portion such that the closed fusion-bonded portion is the outermost edge of the filter cloth;
And,
Wherein the jig has an opening formed by cutting the center to correspond to the closed fused portion, at least one projecting pin formed on one surface thereof, and a fitting hole into which the projecting pin is fitted when the projecting pin is folded in half,
Prior to step (a)
(a-1) cutting the filter cloth to a desired size;
(a-2) forming a cut-through hole penetrating the filter cloth corresponding to the fuel pump connection portion in a vertical direction;
(a-3) forming at least one second through-hole in the filter cloth so as to fix the filter cloth to the projecting pin;
Wherein the laser-cutting and fusing-based fuel filter manufacturing method comprises the steps of:
delete The method according to claim 1,
Wherein the cutting in steps (a-1) to (a-3) comprises laser irradiation of a second laser module operating in a predetermined pattern.
The method of claim 3,
A specification for cutting the filter cloth before the step (a-1) to the step (a-3) so as to control the operation pattern of the second laser module, a specification of the through hole and the size of the second through hole, In advance Wherein the fuel is injected into the combustion chamber.
The method of claim 3,
Wherein the laser module is pre-programmed with respect to a moving position and a laser irradiation position of the laser module before the step (e) so that the laser module irradiates the laser while moving along the closed fused portion. Filter manufacturing method.
A computer-readable recording medium recording a program for causing a computer to execute a method of manufacturing a fuel filter based on laser cutting and fusing according to any one of claims 1, 3, 4,

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