JPS6038126A - Embossing device in continuous vulcanizer for rubber sheet - Google Patents

Abstract

PURPOSE:To make mass production of products with an embossed plane each by a method wherein pressure rolls 12A, 12B with embossing rolls are provided in front of introducing rolls and driving of the pressure rolls and the introducing rolls is made variable to provide a tentering cutter mechanism between these rolls. CONSTITUTION:Pressure rolls 12A, 12B between which only a rubber sheet S is put are provided in front of introducing rolls 4A, 4B and at least one of the pressure rolls as made up of an embossed roller. The pressure rolls 12A, 12B and the introducing rolls 4A, 4B are free to be driven at variable speeds. A tentering cutter mechanism 24 is provided between the pressure rolls 12A, 12B and the introducing rolls 4A, 4B.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an embossing device in a continuous rubber sheet vulcanizer.

Methods for continuously vulcanizing a long strip of unvulcanized rubber sheet include a liner cloth wrapping method, a flat press, a roto-cure one-way method, and a conveyor belt method.

Among these, the conveyor belt method is superior to other methods in terms of improving continuous production efficiency and stabilizing the vulcanized content. Various improvements have been made in Publication No. 117944 and the like.

By the way, in a conveyor belt type continuous vulcanizer,
The rubber sheet may be embossed on both sides or on one side, and the sectional shape of the sheet is changed into an uneven shape by this embossing.

In the conventional embossing device of this type of continuous vulcanizer, the drive source for the embossing roll and the sheet introduction hole is shared by a motor, and with this, the rotation speed of the embossing roll can be arbitrarily selected. First, because the degree of elongation of the sheet in the width direction and longitudinal direction due to embossing differs depending on the sheet thickness, it has not been possible to strictly control the sheet feeding speed.

Further, although the cross-sectional shape of the embossed sheet changes, there is no regulation in the width direction, which causes problems such as unevenness and warping in the vertical direction.

Therefore, the present invention was devised to solve such problems, and it has a drive source for the introduction roll on the entrance side of the vulcanizing can and a drive source for the embossing roll provided in front of the roll. By making the source separate or continuously variable, variable speed, etc., the running control of the rubber sheet can be easily controlled, and the embossing roll and introduction roll 77) fit [width cutter machine S] It is an object of the present invention to provide an embossing device for a continuous rubber sheet vulcanizer, which allows the center of the vulcanizing can to substantially coincide with the center of travel of the rubber sheet.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Figure 1 shows unvulcanized rubber seams) (Sl continuous vulcanizer 11)
An outline of + is shown, and in this Figure 1, (2)
The vulcanizer has a built-in member that is vulcanized using a heating medium such as steam or a pressure medium such as pressurized air. (3) is a conveyor belt, which is wound around the vulcanizing can (21) in an endless manner so that it can freely circulate;
can be carried into and out of the vulcanizing can (2) from the left to the right in the figure via the belt (3).

(4A) (4B) (d Introduction roll, vulcanization can (2)
) are provided as an upper and lower pair on the entrance part (2A) side of the rubber seal 1.

(5A) r5B+ is a lead-out roll, which is provided as a pair of upper and lower parts at the outlet part (2B) gIIJ of the vulcanizing can (21),
The vulcanized rubber sheet (S) is placed on a conveyor belt [3]
It is said that it can be extracted from the vulcanizer (2) by being sandwiched together with the vulcanizer.

The introduction rolls r4A) (4B) each have a sprocket wheel (6A) at the end of the roll shaft as shown in FIGS.
) (6B), a chain (9) is wound around the tension member [811-] over the wheels (6A) (6B) and the driving sprocket wheel (71), and the driving sprocket wheel (7) is connected to the motor (lω , deceleration @ (I
It is possible to drive with QF.

Therefore, both introduction rolls r4A) (4B) are rotated synchronously at the same rotational speed, and although not shown, the introduction rolls r4A) (4B) are
Also on the roll (5Al (5B) side, the introduction roll (4
A) It is configured to be rotated synchronously with the (4B) side at a constant ratio.

(12Al (12B) is a pressure roll, an unvulcanized rubber sheet (s) is placed in front of the introduction roll (4A) r4B)
They are provided as a pair, upper and lower, with the chisel in between.

That is, as shown in FIG. 5, the lower pressure roll (12B) is rotatably supported by the fixed machine frame via the bearing box (13B), and a sprocket is attached to one end of the roll shaft. The wheel side is also housed, and the other end is housed with a gear (16B).

The upper pressure roll (12A) is rotatably supported by the fixed machine frame 04) through a bearing box rllA), and is fixedly raised and lowered and rotatably supported, and the roll shaft is engaged with the gear (16B). The gear (16A) is stored in the bearing box (13A).
), a screw shaft α with a handle α force is screwed into the screw cylinder 4, and the spacing between the pressure rolls (12Alr 12B) can be adjusted by loosely tightening the nut 4 and reversing the handle aη. ing.

Note that the vertical movement of the roll can be confirmed between the dial gauge and the actuator wlIt- shown in Figure pX6.

Therefore, in this embodiment, the pressure rolls (12A) (12B)
Both have embossed surfaces on their surfaces.

In addition, when using an iron roll as a pressure roll, in order to improve the releasability from the rubber sheet (S), it is necessary to treat the roll surface with an II type coating using a tetrafluoride resin, etc. The use of metal rolls other than iron rolls, Creta/silicone rubber, etc. as the roll material is
It can be freely adopted depending on the purpose.

An example is a width cutter mechanism, and the pressure roll (12A
) (12B) and the introducing roll (4Al (4B)), and in this embodiment, as shown in FIGS. 6 and 7, a receiving roll ( (261) and a cutter (support) on the roll (261) and pressed by the additional weight.
is an unvulcanized rubber sheet) (Both ears of Sl can be cut in cooperation with a receiving roll machine.

Preferably, the cutters are provided as a pair of left and right cutters, one of which is movable and fixed in the left and right direction (width direction), so that the sheet edge can be cut into large and small pieces.

The pressure roll (1 x 12B) is the introduction roll (4A) (
4B) It can be driven at variable speeds separately from the drive source or via a continuously variable transmission, but in this embodiment, wII
As shown in Figures 2 and 4, a chain loop is wrapped around the drive rocket wheel, sprocket wheel, and cutter wheel via tension member 4. The starting force of the motor ■ shown in Figure 2 is linked to the wheel side via the reduction gear, and here the pressure roll (12A
) (12BJ gear (1fA) (10) allows for free interlocking.

In addition, if necessary, the pressure roll can be connected to a heating source via a heating pipe (2), a rotary joint, etc., as shown in FIG. 2, to provide a preheating roll function.

Figures 8 and 9 show the @2 embodiment of the present invention, in which a pressure roll (1 roll) has an embossed surface reed on its surface, and is transformed into a pressure roll (12B) by adding a Kuwait lock. The pressure roll (12B) can adjust the roll gap to large or small using the interval adjustment piece η, and the outer periphery is lined with rubber, where the free pressure is applied. It is possible to apply a pattern using the elastic restoring force of the rubber by pressing with a constant force with a roll (12A), and the rest is the same as the first embodiment, so common members are indicated by common symbols.

Next, the action will be explained.

An unvulcanized rubber sheet (unvulcanized rubber sheet) which is a long strip formed by an extruder or a calender roll device, etc. In the first embodiment, both sides are embossed, and in the second embodiment, one side is embossed. Various patterns, embossments, and embossing are performed on the same surface.

At the same time, the surface of the unvulcanized rubber sheet (Sl) is leveled, and air is actively extracted by pressure, making it possible to form thin sheets more reliably and easily than before. In anticipation of the expansion,
Conversely, the width of the formed sheet on the extruder and calender roll side can be reduced, leading to a reduction in material usage.

Also, the pressing force of the rubber sheet 6) and the depth of embossing are @
In the first embodiment, the roll gap is adjusted by operating a handle ση etc. as a rolling down mechanism, and in the second embodiment, the roll gap is adjusted by an additional weight and an adjustment piece (equipment). 12B) is a rubber sheet (
S) is pressurized, embossed, and sent out to the right in FIG.

By the way, the cross-sectional shape of the rubber sheet is stretched in the width direction and the longitudinal direction by the above-mentioned embossing process,
The running control of the rubber sheet becomes a problem.

In such a case, when changing the thickness of the rubber sheet, the ratio of the sheet running speed by the introduction rolls (4A) (4B) and the sheet feeding speed of the pressure rolls (12A) (12B) can be set using a continuously variable transmission. The introduction roll (
4A) (4B) The feeding speed of the embossed sheet is synchronized with the sheet speed of the U conveyor belt (3) or runs at a constant ratio.

In addition, for example, it is recommended to add a sagging absorption mechanism in front of the embossing device to prevent stretching in the longitudinal direction by embossing, but since the width dimension of the sheet changes constantly in the width direction, conveyor belts ( 3), meandering, uneven product width dimensions, curling of the ears, etc.

For such emergencies, pressure roll r12A) (12B)
The iron receiver of the offer cutter mechanism example is installed between the introduction roll (4A) and the introduction roll (4B) by cutting the sheet edge part by the roll (to) and cutter roll (a) to the specified dimensions. In this way, with the center of the sheet almost aligned with the center of the vulcanizing can (2), the rubber sheet is rolled up using the introduction rolls (4A) (4B) and the belt (3). 1- fsl is a vulcanized can (
2) will be introduced.

Incidentally, the uncut sheet edges can be reused in the previous process by a conveying member (not shown).

The rubber sheet (S) treated as described above and carried into the vulcanizing can (2) is vulcanized in the can, and then transferred to the lead-out roll (5A).
)C5B) (/(X is a '18 item and is shipped out.

In summary, the present invention provides a method for converting rubber seams (S) into vulcanized cans (
2) Conveyor belt (3 compartments are provided, the rubber sheet (3) is carried in and out from above and below on the inlet part rzA of the vulcanizing can (2)) and the outlet part (2B) side, respectively.
A pair of introducing rolls (4A) (4B) and a leading-out cy that sandwich S) together with the fun pair belt (3) to introduce and lead out.
-yv (5k) (5B) In the nine rubber sheet continuous vulcanizer il+, the inlet fls (2A)
In front of the introduction rolls (4A) and (4B) on the side, a pair of upper and lower pressure rolls (12
A) (12B) is provided, and the pressure roll (12AX1
At least one of 2B) has an embossed surface opening, and the pressure roll C1ZA) (12B) and the front introduction rolls (4A) and C4B) can be driven at variable speeds; Since it is characterized in that an extension cutter mechanism is provided between the pressure rolls (12A) (12B) and the introduction rolls (4A) (4B), there are the following advantages.

A pressure roll (12A) is placed in front of the introduction roll r4A)C4B).
'K12B), the extruder,
The surface of the unvulcanized rubber sheet formed by a curling roll device or the like is leveled and air is removed by pressure, making it possible to form a sheet with a thinner layer than in the past.

In addition, at least one of the pressure rolls (12AX12B) was used as an embossing roll to perform embossing with various patterns and uneven shapes on the sheet surface, and at the same time, the sheet thickness was changed and the pressure roll (12A) Q2B1 and Since the introduction roll r4A) (4B) is driven at a variable speed, it is easy to control the running of the rubber seam 1- (S), and there is no need to reduce productivity as a continuous vulcanizer fi+. =:2<, products with embossed surfaces can be mass-produced.

Furthermore, pressurization D-rule (12A) r12B) and introduction ry
-w (4A) Since the width-extending cutter mechanism +241 is provided between (4A) and (4B), it is possible to match the center of the sheet with the center of the vulcanizer.
(4B) makes it possible to stabilize the supply of rubber seal (RS) to the vulcanizer (2), which contributes to improving product quality.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and Figure 1 is a schematic side view of the entire vulcanizer, Figure 152 is an explanatory front view of the pressure roll drive system, and Figure 3 is an explanatory diagram of the introduction roll drive system. Front view, t
JSA drawing is a side view of the main part of the first embodiment, Fig. 5 is a partially omitted front view of the pressure roll section, Fig. 6 is a side view of the main part of the first embodiment, and Fig. 7 @ Fig. 6A -A arrow direction view, FIG. 8 is a side view of the main part of the second embodiment, and FIG. 9 is a plan view of FIG. 8. il+... Vulcanization 'JA, [zl... Vulcanization 5114n,
(3t...conveyor belt, (4Al(4B)...
Introduction roll, (5A) (5B) ... Derivation roll, (1
2A) (12B+ , , Pressure roll, flO+ Gl
+-... Drive motor, +2. 'll -...x:/
rN 27B Engineering m, (s)...Rubber sheet. Patent applicant Kobe Steel, Ltd.

Claims (1)

[Claims] L Gomshi) (S)f: A conveyor belt (3) is provided for carrying in and out of the vulcanizing can (2), and is provided on the inlet (2A) side and the outlet of the vulcanizing can 12). A pair of introduction rolls (4A) (4B) and a delivery roll (5A) () are sandwiched together with the upper and lower rubber sheet (S) t-conveyor pair 1/to (3) and introduced and led out on the section [2B] side, respectively.
5B), the inlet section (2A) l! The introduction role in l (
4A) (4B) is provided with a pair of upper and lower pressure rolls (12A) (12B) that sandwich only the rubber sheet (S), and at least one of the pressure rolls (12AX 12B) has an embossed pressure surface. (c), as well as pressure rolls (12AX 12B) and the introduction roll (4A
) (4B+) can be driven at variable speed, and furthermore, the pressure roll (1zA)r 12B) and the introduction roll (4A
) (4B) An embossing device for a continuous rubber sheet vulcanizer, characterized in that an extending cutter mechanism r:lAJ is provided between the holder and the holder.