KR20010105796A - Mat with multiple protrusions, and a method and an apparatus for manufacturing the mat - Google Patents

Abstract

To make the depth of penetration of a weld bead portion uniform and to obtain a bead shape having a flat molten bottom portion free from spiking and melt-down in continuous hot rolling for welding a plurality of hot rolled billets by laser welding in a butt welding method comprising blowing a center gas to a weld portion symmetrically with respect to the optical axis of a laser beam and a side gas from the side portion, (A) the center of laser-inducing plasma is deviated by a distance 0.2 to 0.5 time the diameter of a reference plasma determined by a laser output, a beam diameter, the kind of the center gas and its flow rate, from the center of the laser beam in the welding direction, or (B) the laser beam is run along the butt line at a rate of 2 to 10 m/min at the time of laser welding and the laser beam is oscillated in the direction vertical to the butt line at a frequency of 40 to 80 Hz and an amplitude of 0.4 to 1.0 mm, or (C) to prevent the occurrence of blow holes in the weld bead, to make the depth of penetration uniform at the weld bead portion and to obtain a molten bottom portion having a flat bead shape free from spiking and excessive penetration, laser welding is conducted by supplying a filler wire of an iron base metal containing 0.05 to 3 % of at least one of aluminum, silicon, titanium and manganese, or (D) to stably supply the filler wire to the butt portion with high feed accuracy, the filler wire W is passed through a wire feed nozzle (25) having a curved portion and is supplied to the weld point along the weld line.

Description

MAT WITH MULTIPLE PROTRUSIONS, AND A METHOD AND AN APPARATUS FOR MANUFACTURING THE MAT}

The present invention relates to a mat having a protrusion on the bottom, and a method for manufacturing the same, and a manufacturing apparatus therefor, and more particularly, a non-slip protrusion formed integrally on one surface of a base plate such as rubber and PVC is formed at an angle around the outer periphery thereof. Furthermore, the present invention relates to a mat having a protrusion on the bottom, and a method of manufacturing the same and an apparatus for manufacturing the same.

In general, the mat 10 of a conventional vehicle or the like has a base plate 12 formed of rubber or synthetic resin, or the like, as shown in FIG. 1, and the cushion plate 11 is formed of a fibrous layer such as a nonwoven fabric or a carpet. It is formed, and the lower surface of the base plate 12 is usually formed integrally with a plurality of projections 13 is configured to prevent slipping or sliding.

In an example of the conventional manufacturing method of the mat 10 of such a structure, the base board 12, such as rubber and PVC, is arrange | positioned on the lower mold | type 2 with which the protrusion shaping | molding groove 3 was formed in FIG. By forming a fibrous layer of a nonwoven fabric, a carpet, or the like, and pressing the upper mold 1, the cushion plate 11 is fixed and attached, and the mat 10 in which the protrusions 13 are integrally formed is molded. At this time, since the base plate 12 to be supplied has the formability of the protrusion 13 on the lower surface and the adhesion of the cushion plate 11 on the upper surface, workability must remain. In the case of the thermoplastic synthetic resin, a heater, a heat medium oil, and steam Heat is applied by hot air or the like to impart moldability.

However, according to this manufacturing method, as shown in FIG. 2, the space 4 is formed by the air in the protrusion forming groove 3 even at high pressure during the press molding of the protrusion 13. As described above, since the outer circumferential portion 14 of the protrusion 13 is rounded, there is a problem that sliding or sliding occurs at the protrusion 13 when the mat 10 is disposed, and thus the function cannot be performed.

Accordingly, the present invention is to solve the above problems, the anti-slip projection formed integrally on one surface of the base plate such as rubber, PVC, etc. are formed at the outer periphery of the angular and further formed by the burr to maximize the sliding or sliding It is an object of the present invention to provide a mat having a protrusion on the bottom, and a method of manufacturing the same and an apparatus for manufacturing the same.

1 is a partial cross-sectional view showing the structure of a conventional mat having a protrusion on the bottom,

Figure 2 is a schematic configuration diagram of a manufacturing apparatus for explaining a conventional manufacturing method of the mat having a projection on the floor,

Figure 3 is a partial cross-sectional view showing the configuration of the mat having a projection on the floor according to an embodiment of the present invention,

Figure 4 is a schematic configuration diagram showing an example of a manufacturing apparatus for explaining a manufacturing method of a mat having a projection on the bottom of Figure 3,

5 is a schematic configuration diagram showing another example of a manufacturing apparatus for explaining a method of manufacturing a mat having protrusions on the bottom of FIG. 3;

6 and 7 are schematic configuration diagrams showing still another example of the manufacturing apparatus for explaining a manufacturing method of the mat having a projection on the bottom of FIG.

*** Explanation of major symbols used in drawings ***

1: pictograph 2: lower profile

3: protrusion forming groove 4: space part

10: conventional mat 11: cushion plate

12: base plate 13: projection

14: outer periphery 20: mat of the present invention

21: cushion plate 22: base plate

23: protrusion 24: outer periphery

24 ': Burr 31: Pictograph

32: lower mold 33: porous sheet

34, 44, 54, 64: molded part 35, 45, 55, 65: air discharge clearance (contact surface clearance)

41: lower roller 42: upper roller

43: porous sheet 51: upper roller

51 ': auxiliary roller 52: lower roller

53: Perforated sheet belt 61: Center roller

62: auxiliary roller 63: porous thin plate belt

Mat according to an embodiment of the present invention to achieve this object, the base plate of rubber, PVC, etc. formed with a plurality of anti-slip projections on one surface, and the fiber layer of nonwoven fabric, carpet, etc. mainly on the other side of the base plate In the mat, such as a vehicle interior floor, entrance entrance or hallway floor, comprising a cushion plate formed by attaching, characterized in that the outer periphery of the protrusion is formed at least angled so as to prevent the sliding or sliding to the maximum do. The protrusions are formed in a cross-sectional shape such as a polygon, a circle or an oval, and are formed when a base plate such as rubber or PVC is solidified or hardened, and a burr is formed on the outer periphery of the protrusion to protrude at an acute angle. The plate is preferably attached under heating and pressurization without a separate adhesive when solidifying or curing the base plate such as rubber or PVC.

In addition, the present invention is configured to include a base plate such as rubber, PVC and the like formed with a plurality of anti-slip protrusions on one surface, and a cushion plate formed mainly of a fibrous layer such as nonwoven fabric or carpet attached to the other side of the base plate. In the manufacturing method of the mat, such as the floor of the vehicle interior, the entrance or hallway floor, when pressing, forming the projection to at least angle the outer periphery of the projection in such a form that can prevent the sliding to the maximum Providing a method of manufacturing a mat having a protrusion on the bottom, characterized in that by pressing the base plate during the solidification or curing of the base plate while the air is discharged from the outer peripheral portion of the molding portion corresponding to the outer peripheral edge of the projection do.

In addition, the present invention comprises a base plate such as rubber, PVC and the like formed with a plurality of anti-slip protrusions on one surface, and a cushion plate formed mainly of a fibrous layer such as nonwoven fabric or carpet attached to the other side of the base plate. An apparatus for manufacturing a mat, such as a vehicle interior floor, an entrance or a corridor floor, the apparatus comprising: a press forming means having a forming portion for pressing and shaping the base plate to mold the projection when the base plate is solidified or cured. The air discharge gap is formed so that the air can be discharged from the outer peripheral portion of the forming portion during pressurization and molding of the projection to at least angle the outer peripheral portion of the protrusion in a form that can prevent the sliding or sliding of the plate to the maximum. Provided is a manufacturing apparatus of a mat having protrusions on a floor.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

3 shows the configuration of the mat 20 according to an embodiment of the present invention as a partial cross-sectional view with detail enlarged view.

In FIG. 3, the mat 20 of the present invention has a base plate 22 such as rubber and PVC formed with a plurality of anti-slip protrusions 23 integrally formed on one surface thereof, and the other surface of the base plate 22. It mainly comprises a cushion plate 21 formed by attaching a fibrous layer such as a nonwoven fabric or a carpet, and the outer periphery 24 of the protrusion 23 is formed to be at least angled so as to prevent sliding or sliding to the maximum. It is done.

As such, the protrusion 23 having a cross section in which the outer periphery 24 is formed at the bottom of the base plate 22 can be prevented from slipping or sliding.

In addition, the burr 24 'is formed to protrude at an acute angle on the outer circumferential edge 24 of the protrusion 23, so that it is more effective in preventing the occurrence of slipping or slipping. By such a configuration, it is possible to prevent the occurrence of sliding or sliding almost completely.

The manufacturing method of the mat comprised in this way is demonstrated as follows with the manufacturing apparatus.

The manufacturing method is formed when the projection 23 is solidified or hardened by the base plate 22 such as rubber, PVC, etc. as a cross-sectional shape such as polygon, circle or oval, and the cushion plate 21 is also rubber. At the time of solidification or curing of the base plate 22 such as PVC or the like, it is preferably attached under heating and pressure without an adhesive. Thereafter, it is cooled to solidify to harden.

In the manufacturing method of the present invention, in the above-described conventional manufacturing process, the projection (to form at least an angle to at least angle the outer periphery 24 of the projection 23 in such a form that can prevent the sliding or sliding to the maximum) When pressing and molding 23, solidification or hardening of the base plate 22 while allowing air to be discharged from the outer peripheral edges of the molding parts 34, 44, 54, and 64 corresponding to the outer peripheral edges 24 of the protrusion 23. When pressing the base plate 22 is to form a protrusion (23).

It is preferable that the protrusion 23 is formed on one surface of the base plate 22 and the cushion plate 21 of the fibrous layer, such as a nonwoven fabric or a carpet, is disposed on the other surface of the base plate 22 to be pressed and adhered. something to do. In addition, it is preferable to continuously manufacture the mat by supplying the base plate 22 and the cushioning plate 21 continuously from the rolls as shown in FIGS. 5 and 7. As shown in the figure, it is also possible to manufacture the mat by supplying separately.

Solidification or hardening of the base plate 22 is performed by a conventional technique according to the material. For example, when the base plate 22 is rubber, it is also possible to supply and shape the base plate 22 before solidifying as before, and it is preferable to heat and vulcanize and solidify simultaneously with the forming. Moreover, when the base plate 22 is a thermoplastic synthetic resin, it can be manufactured by heating when it is softened and it is made, and in the case of a thermosetting resin, after forming into the base plate 22, the protrusion 23 before it hardens completely. ) May be manufactured by attaching the cushion plate 21 at the same time.

Embodiments of a specific manufacturing apparatus for such a manufacturing method of the present invention are shown in Figures 4 to 7 as a schematic configuration diagram.

In the manufacturing apparatus of the present invention in Figures 4 to 7, basically, when the solidification or hardening of the base plate 22, the molded part 34, 44, for forming the projection 23 by pressing and molding the base plate 22 54, 64, and press forming means 31, 32; 41, 42; 51, 52; 61, 62. In addition, the molded part at the time of pressurizing and molding the protrusion 23 to at least angle the outer periphery 24 of the protrusion 23 in a form that can prevent sliding or sliding of the base plate 22 to the maximum. Air discharge gaps 35, 45, 55, and 65 are formed so that air can be discharged from the outer periphery of 34, 44, 54, 64.

In FIG. 4, the pressing molding means 31 and 32 include an upper mold 31 and a lower mold 32, and the molding part 34 is disposed on one of the upper mold 31 and the lower mold 32. The air discharge gap 35 is formed by the gap between any one of the upper mold 31 and the lower mold 32 and the porous thin plate 33 by being formed of the protrusion molding through-hole 34 formed at (33). .

Accordingly, after placing the base plate 22 having moldability on the porous thin plate 33 and placing the cushion plate 21 thereon, the base plate 22 is pressurized by forming a projection through hole 34 in FIG. Will flow). At this time, the air is discharged to the air discharge gap 35, which is a gap between the upper surface of the lower mold 32 and the porous thin plate 33, so that it does not become a resistance pressure in forming the protrusion 23. Accordingly, the base plate 22 can be flowed and filled to the outer circumferential edge of the protrusion forming through hole 34 so that the molded mat 20 has the outer circumferential edge 24 of the protrusion 23 angled. In addition, when the pressurizing pressure for molding is sufficiently high, the outer peripheral portion 24 of the protrusion 23 is pushed into the air discharge gap 35, thereby forming a burr 24 '. The base plate 22 may be heated to a predetermined molding temperature as needed.

In this way, since the outer periphery 24 is formed at an angle or includes burrs 24 ', the mat 20 is slid or pushed by the protrusion 23 because the outer periphery 24 is not formed in a rounded shape as in the prior art. There will be no.

In FIG. 5, the pressing molding means 41 and 42 include an upper roller 42 and a lower roller 41, and the molding part 44 surrounds the circumference of the lower roller 41 and is attached by welding or the like. The air discharge gap 45 is formed by the gap between the lower roller 41 and the porous thin plate 43 by being formed of the protrusion forming through hole 44 formed in the porous thin plate 43. In addition, after being molded between the upper roller 42 and the lower roller 41 as shown by the double-dot chain line, it may be wound into a roll after contacting the upper roller 42 by a predetermined angle. It is especially preferable at the time of molding the base plate 22 made of rubbers.

By passing the base plate 22 and the cushion plate 21 having moldability through the upper roller 42 and the lower roller 41 rotated by a motor or the like, which is not shown in FIG. 21 is attached to the base plate 22 and at the same time the base plate 22 flows into the protrusion forming through hole 44 to form the protrusion 23, and the protrusion forming through the air discharge gap 45. As the air in the ball 44 is discharged, the outer periphery 24 of the protrusion 23 is formed to be angled or includes a burr 24 'as described above, and the slip or push of the mat 20 Can be prevented.

In FIG. 6, instead of attaching the porous thin plate 43 to the circumference of the upper roller 42 or the lower roller 41 and attaching the porous thin plate 43 by welding or the like, the porous thin plate belt 53 is used by using the auxiliary roller 51 ′. By rotating between any one of the upper rollers 51 and the lower rollers 52, the protrusion forming through-hole 54 forms a molding portion, and the gap between any one of the rollers and the porous thin plate belt 53 is formed. It is composed of a structure for discharging the air during the molding of the projection (23) to the air discharge gap (55). In such a structure, the circumference of one of the upper roller 42 and the lower roller 41 is formed in forming the molded part 44 of the protrusion 23 as shown in FIG. 5 by using the porous thin plate belt 53. Since it is not necessary to attach the porous thin plate 43 by welding or the like, the manufacturing of the device can be made conveniently. Operation in this embodiment is similar to that in FIG.

In the manufacturing apparatus in FIG. 7, in the manufacturing apparatus in FIGS. 5 and 6, the porous thin plate belts 63 as forming parts are different from the press-contacting and contacting of the thin thin plate belts 53 to 43 only by the rollers. The protrusion forming through hole 64 is configured to press and contact the base plate 22 by pressing the contact belt over a wide angle by the pressure belt 62 '. To this end, the pressure belt 62 'is rotated while contacting the center roller 61 over a wide angle, and the porous thin plate belt 63 also rotates while contacting the center roller 61 over a wide angle as shown in FIG. It may be configured to be wound around a plurality of auxiliary rollers 62, and may be molded in such a manner as to press and contact with one of the central rollers 61 and one of the auxiliary rollers 62, while contacting over a wide angle as shown in FIG. The rotatable charge can be pressurized between the porous thin plate belt 63 and the pressure belt 62 ', and is particularly preferable in the case of rubbers. In this configuration, the basic operation is similar to that of FIG. 6, but is formed while contacting over a wider angle, thereby making it possible to ensure the formability of the protrusion 23, and to allow continuous operation to be performed smoothly. By the movement of the auxiliary roller 62 it is possible to easily control the moldability and the pressing force.

The base plate 22, such as rubber and PVC, in which a plurality of anti-slip protrusions 23 are integrally formed on one surface by the manufacturing apparatus of various structures described above, and mainly nonwoven fabrics and carpets attached to the other surface of the base plate 22. The mat 20, including the cushioning plate 21 formed of a fibrous layer of the back, such as a vehicle interior floor, an entrance hall, or a corridor floor, is manufactured, and the mat 20 manufactured by a manufacturing apparatus having such a structure. When the projection 23 of the base plate 22 of the) is different from the conventional projection 13, at least an angled outer peripheral portion 24 can be formed in place of the rounded outer peripheral portion 14 so that the mat 20 is laid. Sliding or slipping can be sufficiently prevented. In addition, since the burr 24 'is formed around the outer circumferential portion 24 by sufficient molding pressure, the anti-rolling effect is further increased.

According to the configuration and operation of the mat having a protrusion on the bottom according to the embodiments of the present invention described above and the manufacturing method and the manufacturing apparatus thereof, the base plate 22 of rubber, synthetic resin, etc. constituting the mat 20 The outer circumferential portion 24 of the protrusion 23 formed on the bottom is formed at an angle, so that a more sharp burr is formed, such that there is no sliding or slipping of the mat 20.

Claims (6)

A base plate 22 made of rubber, PVC, etc., in which a plurality of anti-slip protrusions 23 are integrally formed on one surface thereof, and a cushion plate 21 formed by attaching a fiber layer such as a nonwoven fabric or a carpet to another side of the base plate 22. In the mat, such as a vehicle interior floor, entrance entrance or hallway floor, including Mat having projections on the floor, characterized in that the outer periphery (24) of the projections (23) is formed at least angled so as to prevent the sliding to the maximum. The cross section of the projection 23 is formed when the base plate 22, such as rubber or PVC, solidifies or hardens, and has a cross-sectional shape such as a polygon, a circle, or an oval. A burr 24 'is formed to protrude at an acute angle, and the cushion plate 21 is heated without a separate adhesive during solidification or curing of the base plate 22 such as rubber and PVC. A mat having protrusions on the bottom, which is attached under pressure. Cushion plate formed of a base layer 22 of rubber, PVC, etc., which is formed integrally with a plurality of anti-slip projections 23 on one surface thereof, and a fibrous layer of mainly nonwoven fabric, carpet, etc. attached to the other surface of the base plate 22 ( In the manufacturing method of the mat, such as a vehicle interior floor, entrance entrance or hallway floor, comprising a) In order to at least slid the outer periphery 24 of the protrusion 23 in a form that can prevent the sliding or sliding to the maximum at the outer periphery 24 of the protrusion 23 during pressing, molding of the protrusion 23 Pressing the base plate 22 during the solidification or hardening of the base plate 22 while forming air from the outer periphery of the corresponding forming section 34, 44, 54, 64 to form the protrusion 23. Method for producing a mat having a projection on the floor characterized in that. The method of claim 3, wherein the protrusion 23 is formed on one surface of the base plate 22, and at the same time, the cushion plate 21 of a fibrous layer such as a nonwoven fabric or a carpet is pressed against the other surface of the base plate 22. Attach; The base plate (22) and the cushioning plate (21) from the roll continuously, to produce a mat, or to supply a single piece of the mat manufacturing method of the mat having a bottom, characterized in that for producing the mat. Cushion plate formed of a base layer 22 of rubber, PVC, etc., which is formed integrally with a plurality of anti-slip projections 23 on one surface thereof, and a fibrous layer of mainly nonwoven fabric, carpet, etc. attached to the other surface of the base plate 22 ( 21. An apparatus for manufacturing a mat, such as a vehicle floor, an entrance or a hallway floor, comprising: Press-molding means (31, 32; 41) having molding parts (34, 44, 54, 64) for forming the protrusions (23) by pressing and molding the base plate (22) during solidification or hardening of the base plate (22). , 42; 51, 52; 61, 62, 62 ', and at least angle the outer periphery 24 of the protrusion 23 in such a form as to prevent sliding or sliding of the base plate 22 to the maximum. Air pressing gaps 35, 45, 55, 65 are formed so that air can be discharged from the outer periphery of the forming part 34, 44, 54, 64 during pressurization and molding of the protrusion 23 for molding. Apparatus for manufacturing mats with projections on the floor. According to claim 5, wherein the pressing means (31,32; 41, 42; 51, 52; 61, 62), the upper mold 31 and the lower mold 32, the upper roller (42, 51) and the lower roller ( 41, 52 and one of the central roller 61 and the auxiliary roller 62; The air discharge gaps 35, 45, 55, and 65 are disposed on either the upper mold 31 and the lower mold 32 or are wound and fixed to either the upper roller 42 or the lower roller 41. , The porous thin plates 33 and 43 having protrusion forming through holes 34 and 44 as the forming parts 34 and 44, and any one of the upper roller 51 and the lower roller 52 or the central roller 61. ), The upper mold 31 or the lower mold 32 by including any one of the perforated thin plate belts 53 and 63 and the pressure belt 62 ', which are wound and rotated and the protrusion forming through holes are formed as the forming parts 54 and 64. The upper roller 42 or the lower roller 41 and the porous thin plates 33 and 43, or the upper roller 51 and the lower roller 52 or the central roller 61 and the thin thin plate belts 53 and 63. Apparatus for manufacturing a mat having a projection on the bottom, characterized in that the gap between.