JPS5976237A - Manufacture of preformed handrail - Google Patents

Abstract

PURPOSE:To obtain the preformed handrail before being vulcanized, while enabling to smoothly and continuously form the main body of a Type-C duck laminate and ornamental rubber into an adherent unitary body and remarkably rationalizing the work of manufacturing a movable handrail, by utilizing a peculiar roll mechanism. CONSTITUTION:The main body 2 of a duck laminate formed into a shape having an approximately C-shaped section clamping a tension member is passed through band-shaped unvulcanized ornamental rubber 3 at the first roll part A comprising dent grooved rolls 9, 11 having grooves similar to the back surface of said main body at their central parts and a flat roll 10 rotating toward the grooved surfaces of said dent grooved rolls. Hence, the central part of the ornamental rubber 3 is pressed as a unitary body onto the back surface part of the main body 2 of the duck laminate. After both side parts of the ornamental rubber 3 are let stand approximately upright along a direction perpendicular to the axial direction of the flat roll 10, said main body is passed through the second roll part B comprising two curved rolls 12, 13 having curved surfaces similar to the edge parts of the main body 2 of the duck laminate to press both side parts of the ornamental rubber 3 onto the main body 2 of the duck laminate.

Description

[Detailed Description of the Invention] This invention relates to a method for manufacturing an escalator or an auto-line handrail, and in particular, in this case... The present invention relates to a method of manufacturing a preformed handrail by integrating decorative rubber.

Generally, escalator handrails have a C-shaped cross section, and their specific structure is to have a laminated main body surface made of several layers of canvas, etc., to improve the appearance or to improve the feel to the human hand. For this reason, a decorative rubber is integrally formed on the surface of the rubber, making it 4'f/7. In this case, if we look at the manufacturing process before vulcanization of this handrail, we can see that in the past, several sheets of 11111 cloth were preheated with a tension member sandwiched between the cloths, and then the cross section was A canvas laminate main body with an approximately C-shaped cross section is formed by pressure molding into a C shape, and then the canvas laminate main body and decorative rubber are simply stacked on top of each other using a vulcanizing machine, packaged, stored, and cured. When pressing with sulfur, the packaging was immediately unwrapped and placed in a mold. Therefore, the non-adhesive laminate of the canvas laminate main body and the decorative rubber is simply left alone before vulcanization, which causes the following problems.

(1) If the C-shaped canvas laminated main body is stored with adhesive applied to its circumferential surface, it is likely to attract dust and the like, which will impede the adhesion.

(2) The entire length of the decorative rubber is expanded in order to overlap the C-shaped canvas laminated body and the decorative rubber, so there is a risk that the decorative rubber may be soiled at that time.

(3) When setting the mold into the mold, the overlapping of the two is done manually, so it takes time to prepare the mold.
Moreover, it is necessary to replenish rubber to the ears, and there is a risk that defects in appearance such as bubbles and apatter may occur after molding.

(4) The C-shaped canvas lamination molding process and the process of overlapping the C-shaped canvas laminated main body and decorative rubber, which were bonded and integrated through that process, were performed on separate lines, resulting in waste in storage and material handling. Generous, inefficient, and boring.

There is also a method of simply crimping the C-shaped canvas laminate body and the decorative rubber with a press before vulcanization, but this requires intermittent work and is inefficient. Originally, the canvas laminated body is molded in a continuous process, so if the specified decorative rubber could also be crimped and integrated on this production line at the same time, the process would be omitted, and the setup work in the next molding process would be significantly reduced. Become.

Furthermore, this eliminates the need to replenish rubber when filling the mold, reducing the number of factors that cause poor appearance, and greatly improving efficiency.

The purpose of this invention is to eliminate the drawbacks of the prior art described above,
It is an object of the present invention to provide a method for easily manufacturing a handrail preformed before vulcanization, which can significantly streamline the process of manufacturing moving handrails. The 10th roll part, which consists of a grooved roll having a groove similar to the back surface of the main body in the center and a front roll rotating toward the grooved surface of the grooved roll, is inserted through a band-shaped unvulcanized decorative rubber. By passing the decorative rubber through it, the central part of the decorative rubber is crimped and integrated with the back part of the canvas laminated body, and both sides of the decorative rubber are made to stand almost upright in the direction perpendicular to the axial direction of the (a) Nisotrol, and later the canvas is Preforming in which both sides of the upright decorative rubber are crimped and integrated with the canvas laminate main body by passing through a 20th roll section consisting of two curved rolls each having a curved surface similar to the ears of the laminate main body. It's in the manufacturing method of handrails.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.The working process is carried out in front of the handrail guide 1 shown in Fig. 1.First, several sheets of cotton canvas are placed between appropriate cotton canvases. A canvas laminated body 2, for example as shown in FIG. A band-shaped unvulcanized decorative rubber 3 with a slightly thick portion is prepared. Next, as will be explained based on FIG. 1, the canvas laminated body 2 is introduced into the 10th rule section A, which characterizes a part of the present invention, with the middle mold 4 disposed inside the canvas laminated body 2 using a lead wire or the like. At the same time, the band-shaped unvulcanized decorative rubber 3 is sequentially passed through the centering guide plate 6 and the rat/ξ guide 7 from the decorative rubber delivery stand 5 disposed below the canvas laminated body 2 to form the canvas laminated body 2. Nagisa on the back of 2. makeup rubber 3
Needless to say, the adhesive surface of the decorative rubber 3 is previously coated with adhesive by a solvent coating device W8, as shown in FIG. Next, when introduced into the 10th-rule part A, the 10th-rule part A forms a second concave or, as shown enlarged in FIG. Since the lower concave groove roll 9 and the flat roll 10 located above the roll 9 and which rotates toward the concave groove form a +f/i, the lower concave groove roll 9 and When introduced between the furanotrol 10 and the rolls 9 and 10, the central part of the decorative rubber 3 is bonded and integrated with the back of the canvas laminate main body 2, and both sides of the decorative rubber 3 are bonded together. is bent almost vertically in a direction perpendicular to the axial direction of the front roll 10 due to the influence of the compression on the 10th roll portion and adhesion near both side portions of the decorative rubber 30. For this reason, the canvas laminated body 2 led out from the 10th loop section A in which both sides of the decorative rubber 3 are upright is immediately introduced into the 20th loop section B; Le part B
As shown in FIG. 2 or FIG. 4, there is one lower concave roll 11 having similar, drum-shaped grooves on the back surface of the canvas laminated body 2, and grooves on both ends of the concave roll 11. '@11
C-shaped canvas laminated body 2 standing perpendicular to the direction
12.1 Two curved rolls with curved surfaces similar to the ears of
3, so those roles 11.12
and 13, the upright portion of the decorative rubber 3 is immediately pressed by these rolls, so that the decorative rubber 3 is immediately integrated by pressure bonding to the outer surface of the canvas laminate body 2, and is vulcanized. The manufacturing method of the preformed band rail is completed. In this case, both sides of the decorative rubber 3 are very thin, and since they are unvulcanized rubber, if they are crimped with a normal roll, the rubber will loosen backwards, causing wrinkles, so this phenomenon is eliminated. Therefore, it goes without saying that the circumferential speed of each roll in the 20th roll section B is adjusted to be faster as the decorative rubber 3 approaches the end in the longitudinal direction.

Incidentally, in one embodiment of the present invention, the 20th roll portion B is composed of three rolls, but if the upright portions on both sides of the decorative rubber 3 can be reliably integrated into both ear portions of the canvas laminated body 20, As shown in FIG. 5, it may be constructed from two pressing rolls 14 and 15 whose central portion has a curved surface similar to the entire surface of the ear portion of the main body 2.

In this example, the 10th part A and the 20th part
- Each roll in the roll section I3 is fixed, but in order to accommodate variations in materials and different types, each roll may be constructed so that it can move forward and backward using an air cylinder, hydraulic cylinder, etc. good. That way, the pressure can be kept constant at all times.

As described above, according to the present invention, by utilizing a unique roll mechanism, the C-shaped canvas laminate main body and the decorative rubber can be bonded and integrated together smoothly, and the quality can be stabilized because they are continuously molded.

Moreover, since it can be easily linked to the line for forming the canvas laminated body, workability is greatly improved, and its industrial value is therefore significant.

[Brief explanation of drawings]

Figure 1 is a plan view showing part of the manufacturing process of this invention, Figure 2 is a plan view showing a part of the manufacturing process of this invention.
The figure is a front view of FIG. 1, FIGS. 3 and 4 are enlarged explanatory views of the main parts of FIG. 1 (or FIG. 2), and FIG. 5 is an explanation showing the main parts of another embodiment of the present invention. It is a diagram. 1. Handrail guide, 2. Canvas laminate main body, 3° decorative rubber, 4. Medium size, 5: Decorative rubber delivery stand, 6: 1 lead-out guy, 7: Lasopa guide, 8° solvent applicator, 9.1
1, 14.15 Concave groove roll, 10゛ float roll, 12, 13: Curved roll. 17

Claims (1)

[Claims] (1) The canvas laminated body, in which the tension member is held and is formed into a substantially C-shaped cross section, is held toward a grooved roll having a groove similar to the back surface of the body in the center and the grooved surface of the grooved roll. By passing the 10th rule section consisting of a rotating furanotrol through a belt-shaped unvulcanized decorative rubber, the central part of the decorative rubber is crimped and integrated with the back surface of the canvas laminate main body, and the decorative rubber is Both sides of the floratrol are stood upright in a direction perpendicular to the axial direction of the floratrol, and then passed through a 20th roll section consisting of two curved rolls each having a curved surface similar to the selvage of the canvas laminated body. A method for producing preformed rails, which is characterized in that both sides of the upright decorative rubber are crimped onto the main body of the canvas laminate.