KR101274643B1 - Method for manufacturing a car mat and car mat manufactured by it - Google Patents

Abstract

 The present invention relates to a method for manufacturing an automotive auxiliary mat including a pair of upper mats having a plurality of holes and a lower mat having a plurality of concave grooves, and to an automobile auxiliary mat manufactured thereby. The present invention relates to a method of manufacturing an auxiliary mat for an automobile, in which an auxiliary mat can be manufactured, thereby reducing mold cost and simplifying manufacturing, and a method for manufacturing an auxiliary mat for an automobile.

Description

Method for manufacturing an auxiliary mat for a vehicle and an automobile auxiliary mat manufactured by the same {Method for manufacturing a car mat and car mat manufactured by it}

The present invention relates to a method for manufacturing a vehicle auxiliary mat comprising a pair of upper mats formed with a plurality of holes and a lower mat formed with a plurality of concave grooves, and to an automobile auxiliary mat manufactured thereby. The present invention relates to a method of manufacturing an auxiliary mat for an automobile, in which two pairs of auxiliary mats can be manufactured, thereby reducing mold cost and simplifying the manufacturing, and an auxiliary mat for an automobile manufactured thereby.

The present invention relates to an improvement of a mat for an automobile filed in the Utility Model Registration Application No. 20-2009-0013802 filed by the applicant of the present invention.

1 and 2, the vehicle mat has an upper mat 110 having a plurality of holes 112 into which foreign substances such as dust are introduced, and have a size corresponding to that of the upper mat 110. The lower mat 120 is provided with a plurality of recessed grooves 122 for receiving foreign substances introduced through the 112.

Magic tapes 111 and 112 are detachably attached to edges of the upper mat 110 and the lower mat 120.

In addition, the hole 112 is formed on the upper surface of the upper mat 110 is wide and narrow on the bottom surface of the upper mat 110 narrow upper light bottom (上 廣 下 狹) is difficult to spill foreign matter through the upper mat (110). It is supposed to.

In the vehicle mat having the above configuration, foreign matters, such as dust and dirt, which are separated from the occupant while the vehicle is in operation, are accommodated in the concave groove 122 of the lower mat 120 through the hole 112, thereby viewing the interior space of the vehicle. It can make it comfortable and reduce the surrounding pollution.

However, in manufacturing such a car mat, in the prior art, since the upper mat 110 and the lower mat 120 having the concave grooves 122 formed with holes 112 must be manufactured through separate molds, Have a burden.

In addition, when manufacturing the mold of the upper mat 110 and the lower mat 120, the hole 112 and the concave groove 122 to be formed in a one-to-one correspondence, so accurate design is required.

Utility Model Registration Application No. 20-2009-0013802

The present invention was created to solve the above problems, and it is possible to obtain two pairs of auxiliary mats (one pair of upper mat and one lower mat) from an EVA sheet obtained by one foaming from one mold, and thus the mold cost. It is an object of the present invention to provide a method for manufacturing a vehicle auxiliary mat and a vehicle auxiliary mat manufactured thereby.

It is another object of the present invention to provide a method for manufacturing a vehicle auxiliary mat and a vehicle auxiliary mat manufactured by the same so that the holes of the upper mat and the recessed grooves of the lower mat can be manufactured to match exactly.

Still another object of the present invention is to provide an improved method for manufacturing an auxiliary mat for a vehicle, such that the thickness of the manufactured auxiliary mat can be constant.

In the present invention to achieve the above object in the manufacturing method of the upper mat is formed with a plurality of holes through which foreign matters of dirt or dust and a plurality of recessed grooves for receiving the foreign matters passed from the holes are formed in the auxiliary mat for automobiles,

a) a compounding step of blending EVA (Ethylene-Vinyl Acetate) and the pigment;

b) a first mixing step of mixing the blended raw materials at 110 ℃ for 12 minutes;

c) a second mixing step of adding a blowing agent and a crosslinking agent after step b) and mixing the mixture at 110 ° C. for 2 minutes;

d) a roll-milling step of applying an temperature of 80 ° C. and passing the roller to make an EVA sheet;

e) Cooling and aging the EVA sheet Aging step;

f) The EVA sheet is placed in a foaming machine (Press) having an upper mold having a plurality of first protrusions on the inner upper surface and a lower mold having a plurality of second protrusions on the inner lower surface, and subjected to heat and pressure, Foaming the EVA sheet in a releasing manner so that first and second recessed grooves are formed on the upper and lower surfaces of the foamed EVA sheet;

g) a first cutting step of horizontally cutting the foamed EVA sheet to form two foamed first EVA mats and a second EVA mat each having the first and second recessed grooves on an upper surface thereof;

h) cutting horizontally across the first recessed groove of the first EVA mat to form a first upper plate having a first hole and a first lower plate having a first concave groove,

In addition, the secondary cutting step of cutting horizontally across the second recessed groove of the second EVA mat to form a second upper plate having a second hole and a second lower plate having a second concave groove;

i) sewing step of sewing with a finishing cloth along the edges of the first and second upper plate and the first and second lower plate after step h).

In addition, the present invention forms the first notch 15 and the second notch 25 on each inner surface of the upper mold 10 and the lower mold 20 in the step f), foamed EVA sheet ( Characterized in that the notch groove 301 is formed on the side of 300

In addition, the auxiliary mat for a vehicle of the present invention to achieve the above object is characterized in that produced by the manufacturing method.

First, after foaming the EVA sheet in one mold 10, 20 so that the recessed grooves 310a and 320a are formed on the upper and lower surfaces, respectively, the foamed EVA sheet 300 is first cut horizontally. Secondary cutting makes it possible to manufacture two pairs of auxiliary mats, each with holes and concave grooves, reducing mold costs and simplifying the production of auxiliary mats.

Second, holes 311a and 321a of the first and second upper plates 311 and 321 are cut horizontally by cutting the recesses 310a and 320a of the first and second EVA mats 310 and 320 horizontally. ) And the concave grooves 312a and 322a of the first and second lower plates 312 and 322 are formed, so that the holes and the concave grooves can be exactly matched.

Third, the first notch 15 and the second notch 25 are formed on the inner surface of each mold in contact with the upper mold 10 and the lower mold 20, and the notch grooves are formed on the sides of the foamed EVA sheet 300. When the 301 is formed, the cutting blade is guided to the notch groove 301 when the first and second EVA mats 310 and 320 are horizontally cut to be cut in half. Accordingly, the thickness of the fabricated auxiliary mats may be uniform, thereby improving quality.

1 is a perspective view showing a conventional vehicle auxiliary mat,
Fig. 2 is a sectional view of Fig. 1,
3 is a flow chart of the production method of the present invention;
4 to 6 is a schematic diagram illustrating the step of foaming the EVA sheet,
7 is a view for explaining a method of horizontally cutting the foamed EVA sheet,
FIG. 8 is a cross-sectional view of the foamed EVA sheet of FIG. 7 horizontally separated from the first and second EVA sheets;
9A is a cross-sectional view of a state in which the first upper plate and the first lower plate are cut horizontally by cutting horizontally through the recess of the first EVA mat of FIG. 8;
FIG. 9B is a cross-sectional view of a state in which the second upper plate and the second lower plate are horizontally cut by cutting horizontally through the recess of the second EVA mat of FIG. 8; FIG.
10 and 11 are photographs showing the foamed EVA sheet
12 is a photograph of the auxiliary mat for automobile manufactured by the manufacturing method of the present invention,
13 and 14 is a view showing another embodiment of the present invention, the modified mold and the EVA sheet foamed therefrom.

Automotive auxiliary mat manufactured by the manufacturing method of the embodiment of the present invention is a lower plate formed with a concave groove that can accommodate foreign substances such as dirt, dust on the upper surface, and the hole coupled to the upper surface of the lower plate and the soil, dust, etc. It is easy to manufacture the auxiliary mat consisting of the formed top plate.

First, the configuration of the auxiliary mat for automobile manufactured by the manufacturing method of the embodiment of the present invention will be described.

Referring to FIG. 12, the auxiliary mat is detachably coupled to the lower mat 420 and the upper mat 410 to accommodate soil, dust, and the like therebetween.

The lower mat 420 has a lower plate 312 having a concave groove 312a formed therein to accommodate foreign substances such as dirt and dust on the upper surface thereof, and a male velcro sewn on the edge of the lower plate 312 and attached to the indoor floor of the vehicle. Made of a tape 340.

The upper mat 410 has an upper plate 311 formed with a hole 311a through which dirt, dust, and the like pass, and an arm Velcro tape sewn to an edge of the upper plate 311 and attached to the male Velcro tape 340. 330).

The auxiliary mat as described above is used on the indoor floor of the vehicle, and dirt, dust, etc. collected in the concave groove 312a of the lower mat 420 through the hole 311a of the upper mat 410 is the upper mat 410. And the lower mat 420 can be easily cleaned by shaking off from the outside, and the interior of the car is clean because dirt, dust, etc. are accommodated in the concave groove of the lower mat 420 during use in the interior of the car. To do it.

Hereinafter, a method of manufacturing the auxiliary mat for a vehicle of the embodiment of the present invention will be described.

3 to 7, EVA (Ethylene-Vinyl Acetate), polyethylene (PE) and pigments are blended in a predetermined ratio. At this time, it is blended in 80% by weight EVA, 15% by weight polyethylene, 5% by weight pigment.

The blended raw materials are first mixed at 110 ° C. for about 12 minutes. At this time, the mixed raw materials are in a gel state, and then, a blowing agent and a crosslinking agent are added and then mixed for 2 minutes at 110 ° C.

The foaming agent uses 5% by weight based on the weight of the EVA, the crosslinking agent uses 2% by weight based on the weight of the EVA.

The raw materials mixed as described above are roll-milled while heating to a temperature of 80 ° C. to form an EVA sheet 30a having a thickness of 12 to 13 mm.

Subsequently, the EVA sheet 30a is aged for 24 hours by cooling.

Subsequently, as illustrated in FIG. 4, a foaming machine having an upper mold 10 having a plurality of first protrusions 11 on the inner top surface and a lower mold 20 having a plurality of second protrusions 21 on the inner bottom surface. Put the EVA sheet (30a) in the cavity (1) of (Press) as shown in Figure 5, applying a pressure for 30 minutes at a pressure of 5kg / ㎠ and a temperature of 140 ~ 150 ℃, and then release the pressure The EVA sheet 30a is foamed by the method.

At this time, as shown in Figure 6, the EVA sheet is foamed to expand the volume to fill the cavity (1) space.

Subsequently, when the upper mold 10 and the lower mold 20 are opened, the upper and lower surfaces of the foamed EVA sheet 300 as shown in FIGS. 7, 10 and 11 have a plurality of recessed grooves 310a ( 320a) is formed.

The foamed EVA sheet 300 has a thickness of about 25 mm and is about twice as large as that before foaming. In addition, the depth of the recess groove (310a) (320a) is about 9mm and the intermediate thickness (d) is about 7mm.

Meanwhile, referring to FIGS. 13 and 14, it forms a first notch 15 and a second notch 25 on each inner surface of the upper mold 10 and the lower mold 20 to be in contact with each other. The notch groove 301 is formed on the side of the sheet 300.

In this case, when the first and second EVA mats 310 and 320 are horizontally cut, a cutting blade (not shown) is guided to the notch grooves 301 to be cut in half. Accordingly, the thickness of the fabricated auxiliary mats may be uniform, thereby improving quality.

After the foamed EVA sheet 300 is cooled as described above, the first and second EVA mats are horizontally cut along the cutting line (c) of FIG. 7 as shown in FIG. 8. 310 and 320 are formed.

The cut surfaces of each of the first and second EVA mats 310 and 320 are formed to have a flat surface, and each of the first and second EVA mats 310 and 320 has recesses 310a and 320a on the top surface of each of the EVA mats 310 and 320.

Subsequently, as shown in FIG. 9A, the first upper plate 311 and the first concave having the first hole 311a formed by cutting horizontally across the first recessed groove 310a of the first EVA mat 310. The first lower plate 312 having the groove 312a is formed.

In addition, the second upper plate 321 and the second recessed groove 322a having the second hole 321a formed by cutting horizontally across the second recessed groove 320a of the second EVA mat 320 are formed. The lower plate 322 is formed.

Subsequently, the first and second upper plates 311 and 321 and the first and second lower plates 312 and 322 are cut into a desired mat shape, and as a finishing cloth member along the edge as shown in FIG. 12. Finish by sewing.

At this time, the finishing cloth member is sewn on the edge of the upper plate 311, the arm Velcro tape 330, and the edge of the lower plate 312 sew the male Velcro tape 340.

The auxiliary mat manufactured as described above is foamed EVA sheet 300 after foaming the EVA sheet in one mold 10, 20 so that the recessed grooves 310a and 320a are formed on the upper and lower surfaces, respectively. By making the first cut and the second cut horizontally, it is possible to manufacture two pairs of auxiliary mats each formed with holes and concave grooves, thereby reducing mold cost and simplifying the production of auxiliary mats.

In addition, the holes 311a and 321a of the first and second upper plates 311 and 321 are cut by horizontally cutting the recessed grooves 310a and 320a of the first and second EVA mats 310 and 320. ) And the concave grooves 312a and 322a of the first and second lower plates 312 and 322 are formed, so that the holes and the concave grooves can be exactly matched.

10 ... Upper mold 11 ... First protrusion
20 ... Lower mold 21 ... Second protrusion
30a ... EVA sheet (after foaming) 300 ... EVA sheet (after foaming)
310,320 ... First and second EVA mats 410,420 ... Top, bottom mats

Claims (3)

In the manufacturing method of the vehicle auxiliary mat formed with the upper mat formed with a plurality of holes through which foreign matters of dirt or dust pass and a plurality of concave grooves for receiving the foreign substances passed through the holes,
a) a compounding step of blending EVA (Ethylene-Vinyl Acetate) and the pigment;
b) a first mixing step of mixing the blended raw materials at 110 ℃ for 12 minutes;
c) a second mixing step of adding a blowing agent and a crosslinking agent after step b) and mixing the mixture at 110 ° C. for 2 minutes;
d) a roll-milling step of applying an temperature of 80 ° C. and passing the roller to make the EVA sheet 30a;
e) to cool the EVA sheet (30a) (aging) Aging step;
f) EVA in a foaming machine (Press) having an upper mold 10 having a plurality of first protrusions 11 on the inner upper surface and a lower mold 20 having a plurality of second protrusions 21 on the inner lower surface. Insert the sheet 30a, apply heat and pressure, and then release the pressure to foam the EVA sheet 30a so that the upper and lower surfaces of the foamed EVA sheet 300 are first and second recessed grooves 310a ( Foaming step to form 320a);
g) The foamed EVA sheet 300 is horizontally cut and two foamed first EVA mat 310 and second EVA mat 320 having the first and second recessed grooves 310a and 320a on the upper surface thereof, respectively. Forming a primary cutting step;
h) a first upper plate 311 and a first concave groove 312a having a first hole 311a formed by cutting horizontally across the first concave groove 310a of the first EVA mat 310. 1 form the bottom plate 312,
In addition, the second upper plate 321 and the second recessed groove 322a having the second hole 321a formed by cutting horizontally across the second recessed groove 320a of the second EVA mat 320 are formed. A second cutting step of forming a lower plate 322;
i) a sewing step of sewing with a finishing cloth along the edges of the first and second upper plates 311 and 321 and the first and second lower plates 312 and 322 after the step h). Method for manufacturing an auxiliary mat for a vehicle characterized in that. The foamed EVA sheet of claim 1, wherein the first notch 15 and the second notch 25 are formed on each inner surface of the upper mold 10 and the lower mold 20 in step f). Method of manufacturing an auxiliary mat for a vehicle, characterized in that the notch groove 301 is formed on the side of the (300). An auxiliary mat for a vehicle, which is manufactured by the manufacturing method of claim 2.

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