JP2838778B2 - Manufacturing method of non-slip handrail for construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uneven handrail pattern for forming a non-slip uneven film on the outer periphery of a metal or synthetic resin base material used for stairs, corridors, bathrooms, toilets and the like used for construction. The present invention relates to a method for manufacturing a non-slip handrail for architectural purposes, in which a molten step portion generated when molding a non-slip handrail is flatly pressed at the end of molding.

[0002]

2. Description of the Related Art Conventionally, handrails used for this kind of architectural stairs, corridors, bathrooms, toilets, etc. are made of wood in a circular shape in the longitudinal direction, or a metal pipe or a synthetic resin pipe or an outer periphery of a metal pipe. Is generally used as a handrail.

[0003]

Of the things described in the prior art, wood handrails are weak and
There is a drawback that the production is very troublesome, and mold and the like easily occur. In addition, the metal pipes have a problem that they can be injured or cut when hit, which is dangerous. Further, a metal pipe coated with a synthetic resin has a disadvantage that it is very slippery. The present invention has been made in order to solve such a conventional problem, and a main object thereof is that a metal die or a synthetic resin is provided on a periphery of a base material made of a metal or a synthetic resin while a die is running. A thick protrusion and a thin concave arc are provided on a part of the slab with a non-slip uneven portion by a lift shutter mold of a variable drive device, and a melting step formed by the lift shutter mold forming the uneven portion is formed. At the exit of the die,
It is an object of the present invention to provide a method of manufacturing a safe handrail serving as a beautifully non-slip appearance having a flat molded finish.

[0004]

In order to achieve the above object, a method for manufacturing a non-slip handrail according to the present invention comprises:
The traveling base material is made of various shapes of metal or synthetic resin. The base material enters the mold die, and first forms a thick protrusion on the entire outer periphery in a longitudinal direction by an injection path from an extruder. Next, a thin concave arc portion is formed alternately and continuously on a part of the outer periphery by pressing with a vertically movable shutter mold (6) from a variable driving device from below. Thereafter, the molten step formed on the surface of the coating layer by the mold die for forming the thick protrusion and the thin concave arc is flatly pressed at the exit of the mold die.
Another object of the present invention is to form a cutout opening in a part of the handrail along the longitudinal direction. In addition, a flat unspecified interval portion is appropriately formed at a predetermined interval position where a thick projection portion and a thin concave arc portion in the longitudinal direction provided on a part of the outer periphery of the handrail are alternately formed.

[0005]

The steps of the method for manufacturing the non-slip handrail constructed as described above will be described with reference to FIGS. 1 and 6. The extruder (2) operates while the substrate (10) is running.
A sectional line taken along the line AA in FIG. 1 shows a state in which the substrate (10) has advanced into the die (5) shown in FIG. Next, as shown in FIG. 1B, the outer peripheral coating layer (11) of the substrate (10) and the thick protrusion (12) are formed by the die (5) as shown in FIG. ) Is formed. Next, as shown in FIG. 6 (c), a sectional line taken along the line CC of FIG. 1 is located above the variable driving device (8) located inside and below the die (5). This shows a step of pushing up the thick protrusion (12) in a state where the rising and lowering shutter mold (6) starts to ascend. At this time, while the melting step (9) is formed on the outer peripheral side of the coating layer (11), the ascending and descending shutter mold (6) is sequentially raised and lowered in the state shown in FIG. The wall protrusion (12) is formed like a thin concave arc (13). In this state, a melting step (9) is formed in a molten state by a lifting and lowering of a lifting and lowering shutter mold (6) on the outer peripheral side of the coating layer (11). The molten coating layer (11) moves at the last exit of the die (5) along the line DD in FIG. 1 and passes through the die (5) in FIG. 6 (e). Inside, the boundary of the melting step (9) is formed into a pressed flat flat circle, and an uneven shape serving as a slip stopper as shown in FIG. 2 is formed to complete the handrail. , Cooling water tank (1
6), cut through a drawer (17) and cut by a fixed-length cutting machine (18) at a position such as a flat unspecified interval (14) to manufacture a non-slip handrail. .

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a handrail according to an embodiment of the present invention; FIG. A base material (10) having various cross-sectional shapes having a hollow portion made of various hard synthetic resins or metals is passed through the inside of a mold die (5) while an injection path (3) from an extrusion molding machine (2) is formed. ), A thick protrusion (12) is formed on a part of the outer periphery of the substrate (10) in the longitudinal direction. Then, a part of the outer periphery is thinned by a downward pressing by a lifting shutter die (6) connected to a lifting rod (7) of a variable driving device (8) that rises and lowers from below in the die (5). Concave arc (1
3) A coating layer (11) formed alternately with the thick protrusions (12) is applied to the outer periphery of the substrate (10). Next, at the time of forming a thick protrusion (12) and a thin concave arc (13) on the outer periphery of the coating layer (11) by the elevating shutter mold (6), a melting step formed at the boundary of the outer periphery in the longitudinal direction. (9) is formed to project. The melting step (9) is provided with a die (5).
Is pressed at the outlet and passed through, and the outer periphery is flattened.

Handrail (1) that has passed through the die (5)
Is manufactured by moving forward, passing through a cooling water tank (16), passing through a drawer (17), and cutting to a predetermined size by a fixed-length cutting machine (18) to produce a non-slip handrail.

FIG. 4 shows a handrail (1) according to the first aspect of the present invention, in which a cutout opening (15) is formed in a part of the base material (10) in the longitudinal direction. It shows an example. Further, a handrail (1) described in claim 1
4 and 5, a flat portion is provided at a predetermined interval between alternately provided thick projecting portions (12) and thin recessed arc portions (13) provided on a part of the outer periphery of This shows an embodiment in which the unspecified interval portion (14) is formed. In addition,
When manufacturing the substrate (10), an adhesive may be applied to the outer periphery thereof. Reference numeral (19) denotes a metal tube inserted into the handrail (1) for reinforcement as shown in FIG. (20) is an extrusion molding machine (2)
FIG.

As the synthetic resin used for the extrusion molding machine (2), various constituent materials such as polyolefin resin, vinyl chloride, nylon and styrene are used. The reason why the variable driving device (8) interlocked with the die (5) shown in FIG. 1 is provided below the die (5) is that the vertical driving shutter (8) is moved above the variable driving device (8). Compared to the one that activated the mold (6),
The molten synthetic resin from the extrusion molding machine (2) is always supplied in a fixed direction in a fixed amount and moves, and the supply amount of the unevenness is adjusted by the elevating shutter mold (6).
An elevating shutter mold (6) is provided below so that excess material does not drip on the outer periphery of the substrate (10), and is prevented from dropping around the substrate as in the case of using the elevating shutter above. It was done.

[0010]

According to the present invention, unlike a conventional wood or metal pipe or a handrail having a synthetic resin coated on its outer periphery, the handrail can be securely gripped without slipping during use.
Finished handrails have an irregular surface such as protrusions on the outer periphery beautifully finished at the exit of the mold die, and have a very excellent effect on appearance and anti-slip irregularities formed in the longitudinal direction. As a result, the shape has characteristics, and it has sufficient toughness.

Further, there is an effect that a coating layer can be easily and easily applied to a continuously running synthetic resin or metal substrate by using a single extruder in a die.
Furthermore, a downward thick protruding part is formed at a part of the outer periphery in the longitudinal direction at the beginning of the die with respect to the base material. Therefore, thin concave arc portions can be easily formed alternately on a part of the thick protruding portion, and a convenient effect that the distance between the thick protruding portion and the thin concave arc portion can be freely selected depending on the elevating speed. is there. Further, a molten step formed in the longitudinal direction at the boundary between the thick projection and the thin concave arc formed by the die formed on the surface of the handrail is pressed flat by the exit of the die,
There is an advantage that it can be finished neatly.

Further, by forming a cutout opening at one position in the longitudinal direction of the base material in the handrail, it is possible to easily perform the mounting operation of the mounting bracket or the like at the time of mounting at the place of use. Furthermore, a flat unspecified interval portion is formed by providing a predetermined interval at a predetermined position alternately formed with a thick projection portion and a thin concave arc portion provided in the longitudinal direction of the handrail. In addition to the above, there is an effect that the cutting operation can be made extremely easy, and the finished portion can be made beautiful.

[Brief description of the drawings]

FIG. 1 is a side view showing a partially omitted manufacturing method according to the present invention.

FIG. 2 is also a partially cut away perspective view of the invention;

FIG. 3 is a longitudinal sectional side view of a handrail portion showing a state in which a melting step portion which occurs in a longitudinal direction during a manufacturing process of the present invention is formed.

FIG. 4 is a perspective view of the handrail according to the present invention, in which a cutout portion provided in the longitudinal direction is partially cut away.

FIG. 5 is a perspective view showing a state in which a metal tube is inserted inside the handrail of the present invention.

FIG. 6 is a vertical sectional side view of a die for manufacturing the handrail according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handrail 2 Extrusion molding machine 3 Injection path 5 Die die 6 Elevating shutter die 8 Variable driving device 9 Melting step part 10 Base material 11 Coating layer 12 Thick projection 13 Thin concave arc 14 Unspecified interval 15 Missing Opening 16 Cooling water tank 18 Standard cutting machine

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04F 11/18 B29C 47/02 B29C 47/20

Claims (3)

(57) [Claims] The traveling base material (10) is made of various shapes of metal or synthetic resin, and the base material (10) enters into a die (5) and is extruded by an extrusion molding machine (2). First, a thick protrusion (12) is formed on a part of the entire outer periphery in the longitudinal direction by the injection path (3), and then the lift shutter mold (6) from the variable driving device (8) from below is formed. ) Is applied with a coating layer (11) that alternately forms a thin-walled concave portion (13) adjacent to the thick-walled protrusion by the pressing of the thick-walled protrusion (12) and the thin-walled concave arc. A longitudinal melting step (9) (9) generated on the surface of the coating layer (11) by the mold die formed with the part (13) is formed at the exit of the mold die (5). 9) A method for manufacturing a non-slip handrail for architectural use, wherein (9) is passed through a flat shape by press molding. 2. The method for manufacturing a non-slip handrail for architectural purposes according to claim 1, wherein a notch opening (15) is formed at one location in the longitudinal direction of the base material (10) according to claim 1. 3. A flat unspecified interval portion (14) is formed at a predetermined predetermined interval between the thick projection portion (12) and the thin concave arc portion (13) according to claim 1. Item 1
Manufacturing method of non-slip handrail for construction.