KR200299273Y1 - Molding Roll for Manufacturing Apparatus of Car-Mat Sheet having Antisliding Protuberance - Google Patents

Abstract

The present invention relates to a molding roll for manufacturing a mat paper, which is a fabric of a mat covering the interior floor of a car, and more particularly, a sliding to form a high quality conical protrusion preventing slipping of 5 mm or more on the back surface of the mat paper. The present invention relates to a forming roll for an automobile mat paper manufacturing apparatus having a prevention protrusion.

The present invention forms a conical protrusion on the back surface of the guide roll (1) and the base (c) for guiding the matrix (c) extruded into a sheet form from the extruder into a sheet form from the extruder and the carpet (d) supplied from the side. In the configuration consisting of the forming roll (3) to be made, and the carpet bonding roll (2) for mating the forming roll (3) to press the carpet (d) to the surface of the base (c),

A single or plural mat cutting edges 20, 20a, 20b, 20a, 20b, 20c and 20d are applied to the main surface of the forming roll 3, and the mat cutting marks are provided. It is characterized in that the projection groove 5 having a depth of 5 mm or more and an air hole 6 is formed only in the region excluding the overlock treatment section extending from the inside of the frame to the virtual line 30.

In addition, it further includes having a fine groove (7) on the surface of the forming roll (3) around the projection groove (5) in the area of the mat for cutting mark mat.

Description

Molding Roll for Manufacturing Apparatus of Car-Mat Sheet having Antisliding Protuberance}

The present invention relates to a forming roll for manufacturing a mat paper, which is a fabric of a mat covering the interior floor of a car, and more particularly, an anti-slip protrusion for forming a high quality conical protrusion preventing slipping on the back surface of the mat paper. It relates to a molding roll for automobile mat paper manufacturing apparatus having a.

Mat paper refers to the fabric of the mat manufactured so that the projections are formed on the back surface of the matrix and the carpet is bonded to the surface based on the extrusion of a gel thermoplastic resin (Thermoplastic Resin) into a sheet.

The thermoplastic resin is a lightweight material having a low specific gravity, and is inexpensive and has excellent rubber characteristics, compared to rubber, and requires no vulcanization process, reuse of scrap, and excellent moldability.

Thermoplastic resins having these characteristics include EVA (Ethylene-Vinyl Acetate Copolymer), PE (Polyethylene), PU (Polyurethane), SBS (Styrene-Buadiene-Styrene Block Copolymer), and TPO (TPE-O: Thermoplastic Elastomer- Olefinic).

Some car mats have carpets bonded to the surface of a vulcanized rubber base.

As shown in Fig. 13, some types of automotive mats are treated by overlocking the edges of the mats (a) cut in the shape of the mats to prevent loosening of the carpets by integrating the base and the carpets. As in Utility Model Registration No. 150628, the carpet is bonded to the surface of the rubber sheet by the vulcanizing action when heated in upper and lower uneven molds mounted on the press, and at the same time, there is a mat formed to form conical protrusions on the back surface.

The height of the conical projections has long been standardized to less than 4 mm.

1 shows a general manufacturing apparatus for producing a long mat paper.

This apparatus forms conical protrusions on the back surface of the guide roll (1) and the base (c) for guiding the base (c) extruded into a sheet form from the extruder into a sheet form from the extruder and the carpet (d) supplied from the side. It consists of a forming roll (3) to be made, and a carpet bonding roll (2) for mating the forming roll (3) to press the carpet (d) to the surface of the base (c).

The rotating shafts of the guide roll 1, the forming roll 3, and the carpet bonding roll 2 are both tubular shafts, which cool the base c which causes the cooling water to flow through the tubular rotating shafts, and turns each roll. Let's do it.

On the circumferential surface of the forming roll 3, a conical projection forming groove 5 as shown in Figure 2 is formed regularly, the projection groove 5 is a depth suitable for forming a projection of 4mm or less in height Has

With a conventional forming roll of such a structure, it is practically difficult to guarantee the manufacturing quality of the base for mat paper having a protrusion of 5 mm or more as a thermoplastic resin.

Although the difference between the 4mm and 5mm protrusions is only 1mm, there are many cases where the end of the protrusion is cut off from the protrusion groove during the demoulding process and is frequently cut. This is because poor molding often occurs by preventing air from being pushed out to the end of the protruding groove while being trapped without being able to escape from the protruding groove.

Even if the order specification for the anti-slip protrusion is 1mm higher than the specification, the situation will be different.

In this regard, the forming rolls of the apparatus for continuously producing the mat having conical projections on the back side while continuously supplying the long base, and the surface of the base which is also bonded with the long carpet are required for the projections to have a dimension higher than the prescribed value. Even in this case, there is a need to improve the structure in a way that can be mass-produced with good quality.

The object of the present invention is to extrude a sheet of thermoplastic resin in the form of a sheet into a sheet and press the carpet to the surface of the matrix, and on the reverse side, a conical protrusion of 5 mm or more in height except for the overlock section in the area of the mat cutting line. The present invention provides a molding roll for an automobile mat paper manufacturing apparatus having an anti-slip protrusion capable of producing high quality.

The technical problem is to provide a frame for cutting the mat on the main surface of the forming roll, and to form a projection groove having a depth of 5 mm or more in the area of the mat cutting mark only in the area excluding the overlock treatment section. By forming an air hole through which the air in the projection groove can evacuate when the projection base is press-fitted, it can be achieved by a forming roll configured to prevent the air in the projection groove from interfering with the press-in of the projection base.

The present invention goes a step further by forming a fine groove on the surface of the forming roll around the protrusion groove so that the remaining air that can not escape through the area when the base is in close contact with the main surface of the forming roll to escape It also includes increasing the moldability on the back surface of the matrix.

1 is a conceptual diagram of a general automobile mat paper manufacturing apparatus

2 is a perspective view of a mat paper forming roll according to the present invention

3 is a longitudinal sectional view of the singular forming roll;

4 is a detail view "A" of FIG.

Figure 5 is a partial cross-sectional view showing a state in which a non-slip projection formed on the back surface of the mat paper in the forming roll and the carpet is bonded to the surface

6 is a detail view "B" of FIG. 5

7 is a surface development view of the singular forming roll

8 is a perspective view of two one-piece forming rolls

9 is a development roll surface development of FIG.

10 is a perspective view of four one-piece forming rolls

FIG. 11 is a development view of the forming roll surface of FIG. 10. FIG.

12 is a rear view of the mat paper produced in the singular forming roll

Figure 13 is an illustration of the mat cut off from the mat paper and then overlocked the edge

<Description of the symbols for the main parts of the drawings>

2: carpet bonding roll 3: forming roll

5: protrusion groove 6: air hole

7: microgroove c: base

d: carpet e: protrusion

20,20a, 20b, 20c, 20d: Mat cutting mark frame

Hereinafter, the present invention will be described with reference to FIGS. 1 to 12 created based on the preferred embodiment.

1 shows conical projections on the back surface of the guide roll 1 and the base c for guiding the base c which extruded the gel-like thermoplastic resin mass into a sheet form from the extruder and the carpet d supplied from the side. It is an example of an automobile mattress manufacturing apparatus composed of a forming roll (3) to be formed, and a carpet bonding roll (2) for mating the forming roll (3) to press the carpet (d) to the surface of the base (c). .

In Fig. 2, the conical projection forming grooves 5 are formed on the circumferential surface of the forming roll 3 regularly.

In the present invention, all the projection grooves 5 are 5 mm long, 1 mm longer than the previous depth of 4 mm.

The protruding groove 5 is formed only in a region excluding the overlock treatment section extending from the inside of the mat cutting mark frame 20 to the virtual line 30.

Mat cutting mark frame 20 is modeled after the outline of the car mat, the frame 20 is for marking the cutting line 21 of the mat that marks the back of the base (c).

3 and 4, all the projection grooves 5 of the forming roll 3 are formed with air holes 6 in the grooves thereof.

Air hole 6 is bored in the direction of the center so that the end is blocked at the bottom of the projection groove 5, similar to the projection groove 5 drilled in the center direction, the projection base (c) portion of the forming roll (3) and carpet When press-fitted into the projection groove 5 by the pressure squeezed out between the bonding rolls 2 serves as a evacuation space that can be evacuated by the air in the projection groove 5 to be pushed out.

Then, the micro groove 7 is formed on the surface of the forming roll 3 around the projection groove 5 in the region of the mat cutting mark frame 20.

The fine groove 7 is a residual air evacuation space provided so that the residual air that has not escaped through the portion can be evacuated when the base c is in close contact with the main surface of the forming roll 3.

In Figure 1, the base (c) and the carpet (d) coming out through the guide roll (1) is pressed against the carpet bonding roll (2) while rolling out the forming roll (3) carpet (d) on the surface of the base (c) The base (c) pressed by the pressure at the time of joining is pushed into the projection groove (5) to change into a conical projection (e).

At this time, since the air stayed in the protrusion groove 5 is evacuated to the air hole 6 by being pushed by the protrusion e, there is no possibility that the protrusion e may be deteriorated due to the residual air in the protrusion groove 5.

Since the volume of the air hole 6 is much smaller than the volume of the protrusion groove 5, the air density becomes high, and this high density air acts as a kind of air bag in the air hole 6. The projection e does not push the end portion into the air hole 6.

And the air in the compressed air hole (6) is used to solve the vacuum state of the projection groove 5 when the projection (e) in the projection groove (5) is demolded.

Thus, the demolding of the formed protrusions (e) is easy, so that no broken or deformed Buddha statues occur, and the ends of the protrusions (e) are also neatly processed.

On the other hand, the base c 'in the microgroove 7 among the parts of the base c which is in contact with the surface of the forming roll 3 between the projection grooves 5 is as shown in FIG. 6 between the microgrooves 7. There is a high possibility that the microcavity 8 remains.

In the microcavity 8, the air that has escaped from the protrusion groove 5 is trapped by the base c, and when the air staying in the area between the protrusion grooves 5 is pressed by the coming base c, Air which has not escaped from the roll 3 is trapped, thereby increasing the adhesion between the forming roll 3 and the base c.

According to the role of the microgroove 7, the formability of the back surface of the base (c) is improved along with the formability regardless of the height of the projection (e).

In any case, when the carpet (d) is bonded to the surface of the substrate (c) while passing between the forming roll (3) and the carpet bonding roll (2), the mat cutting mark 20 by the pressure acting between the two rolls Denotes a cutting line 21 for cutting off the mat on the back surface of the base c as its outline.

7 shows the surface of the forming roll 3 in which the mat cutting mark 20 is singular, in which case one sheet of mat is obtained per rotation of the forming roll 3.

8 and 9 illustrate two one-piece forming rolls 3, in which case the mat cutting marks 20a and 20b are arranged symmetrically in the axial direction so that the forming rolls 3 are Each turn, two identical mats were obtained at once.

Suitable for manufacturing truck mats with driver and passenger seats only.

10 and 11 illustrate four one-piece molding rolls 3, in which case the driver's seat and passenger seat mat trim marks 20a and 20b and the rear seat mat trim marks 20c and 20d. Are arranged in pairs so that a mat set is obtained each time the forming roll 3 is rotated one time.

In this case, it is natural that the radius of the forming roll 3 also increases in proportion to the mat cutting marks 20a, 20b and 20c, 20d in a plurality of rows.

FIG. 12 shows an excerpt of a portion of the back surface of the elongated mat paper 9, that is, the base c, manufactured while passing through the singular forming roll 3, wherein the mat paper 9 is cut out along the cutting line 21. When put into a press equipped with a mold and cut out, a car mat having the same shape as that in the cutting line 21 is obtained.

Since the cut mat is in a state in which the carpet (d) is bonded to the base (c), the carpet edge may be unwound. Thus, as shown in FIG. 13, the carpet is prevented by overlocking the edge of the mat (a). do.

As described above, the forming roll for the automobile mat paper manufacturing apparatus according to the present invention is protruded into the protruding groove having a depth of 5 mm or more formed only in the area excluding the overlock treatment section in the area of the mat cutting mark provided on the main surface. As the air hole in the protrusion groove is formed to evacuate when the base portion is press-fitted, the molding of the protrusion is not hindered by the residual air in the protrusion groove, and there is an advantage in that demoulding after molding is also easy.

In addition, by forming a micro groove in the surface of the forming roll around the projection groove in the area of the mat cutting mark frame, when the base is in close contact with the main surface of the forming roll, it becomes a refuge for the air escaping from the projection groove in the area. It is a very useful design that can contribute to increasing the formability of the base.

Claims (5)

A molding roll for forming a conical protrusion on the back surface of the guide roll 1 and the base c for guiding the base (c) from which the gel-like thermoplastic resin mass is extruded into a sheet form from the extruder and the carpet (d) supplied from the side. (3) and what constituted with the carpet bonding roll 2 which mated with the said shaping | molding roll 3, and pressed the carpet d to the surface of the base c, The mat cutting mark frame 20 is provided on the main surface of the forming roll 3, and the protruding groove 5 is provided only in the region excluding the overlock treatment section extending from the inside of the mat cutting mark frame to the virtual line 30. Forming roll for automobile mat paper manufacturing apparatus having a non-slip projection, characterized in that formed. The method according to claim 1, wherein the mats for cutting the mat cutting marks are provided with two pairs of mat cutting marks (20a) and (20b), and the protrusion grooves 5 are formed only in the region except for the overlock treatment section. Forming roll for automobile mat paper manufacturing apparatus having an anti-slip projection. The mat cutting marks (20a), (20b), (20c) and (20d) are provided to each of the mat cutting marks rims, and each of the protrusion grooves 5 is formed within the area excluding the overlock treatment section. Forming roll for automobile mat paper manufacturing apparatus having a non-slip projection, characterized in that formed). The sliding groove according to any one of claims 1 to 3, wherein the projection groove 5 has a depth of 5 mm or more, and an air hole 6 is formed in the groove bottom of the projection groove 5. Roll forming machine for automobile mat paper manufacturing equipment with prevention protrusion. The projection groove according to any one of claims 1 to 3, wherein the projection grooves are formed in the areas of the mat cutting marks rims 20, 20a, 20b, 20a, 20b, 20c, and 20d. 5) Molding roll for automobile mat paper manufacturing apparatus having a non-slip projection, characterized in that it further has a fine groove (7) on the surface of the forming roll (3).