KR101753784B1

KR101753784B1 - Vulcanization molding method for rubber deformation prevention

Info

Publication number: KR101753784B1
Application number: KR1020160001723A
Authority: KR
Inventors: 명인해; 신동우
Original assignee: 주식회사 명진티에스알
Priority date: 2016-01-06
Filing date: 2016-01-06
Publication date: 2017-07-04

Abstract

The present invention relates to a rubber-deformation vulcanization molding method, in which a pair of left and right rubber plates (100, 200), which are rubber vulcanized with a rubber-deforming vulcanization molding machine which is a press and heating press, are vertically stacked, The rubber deformation vulcanizing machine is attached to the upper molding machine 310 and the lower molding machine 100 by heating and pressing the left rubber plate 100 and the right rubber plate 200 by heating and pressing the left rubber plate 100 and the right rubber plate 200, The upper molding machine 310 is provided with an upper heating plate 311, an upper pressing plate 312 and an upper rubber plate 313 in this order from the upper side to the lower side. The lower rubber plate 323, the lower pressure plate 322, and the lower heating plate 321 are sequentially disposed in the direction of the arrow A, and the stress during heating and pressing is dispersed to prevent the deformation of the bonded portion to maintain the shape.
An unvulcanized rubber plate is placed between a vulcanized rubber plate and a superposed rubber plate to disperse the stress during heating and pressurization when the rubber plate is adhered by a press to prevent deformation such as wrinkles and rupture of the vulcanized rubber plate and the unbonded rubber plate And there is a remarkable effect of maintaining the shape.

Description

[0001] The present invention relates to a vulcanization molding method for rubber deformation prevention,

More particularly, the present invention relates to a method of forming a rubber-deformation-resistant vulcanizing molding, which comprises heating at the time of molding, providing a flexible rubber or heat-resistant resin plate at a position where the pressure plate comes into contact with an object to be worked, To a rubber-deformation-preventing vulcanizing molding method.

In general, rubber vulcanizing machine adopts pressure and heating method using hydraulic pressure for vulcanization. At this time, the heating plate is composed of STEEL. It is generally used for a molding method in which an unvulcanized rubber is injected by using a mold or a pressure plate. The problem is that in the method of adhering and forming rubber vulcanized rubber, this general type of press is not suitable for molding rubber vulcanized rubber. This is because when the vulcanized rubber is pressurized, it receives stress and deforms due to rupture or bulging.

Adhesion of vulcanized rubber to vulcanized rubber frequently occurs. Particularly, there are frequent occurrences requiring a large area, a wide-width long product, or a rubber integrated for other purposes such as waterproofing.

Adhesion of vulcanized rubber can not but be limited to producing a wide range of products due to limitations of the equipment. Adhesion using common room temperature adhesives is simple and easy, but some adhesives are not developed according to the type of rubber, and some parts are difficult to adhere. Particularly, there is an adhesive material such as EPDM, SILICONE, FKM.

In the method of adhering the vulcanized rubber and the vulcanized rubber, the adhesive is applied by using a commercially available room temperature adhesive, or the adhesive is applied using a pressurizing and heating press. When using a room temperature adhesive, vulcanized rubber and vulcanized rubber are bonded by physical force. For heating and pressurizing method, adhesive or unvulcanized rubber is used as an adhesive medium, Is used for bonding.

In this case, in order to adhere vulcanized rubber and vulcanized rubber, medium rubber, which is a medium, is put into a press, and pressure and heat are applied by using a steel plate or mold of hot pressing pressure. When vulcanized rubber is vulcanized, Flow rubber is less stressed.

As a result of this phenomenon, the vulcanized rubber is deformed due to the stress, and the excessive adhesion causes wrinkles, tearing, and / or bursting of the adhesive portion. There is a disadvantage that a defective product which is difficult to use as a product is manufactured.

On the other hand, JP-A-0160497 discloses a method for producing a composite elongated extrudate having a body portion formed of a thermosetting material and at least one other portion composed of a thermoplastic polymerized material, Wherein the thermosetting material is heated to a temperature of 180 占 폚 or higher and the thermosetting material is passed through a subsequent extruder in a heated state to heat the thermosetting material at a temperature of 150 占 폚 or higher , The thermoplastic material is further extruded onto a part of the thermosetting material heated at a temperature of 120 DEG C or more and the composite extrudate is cooled to bond the two materials together. It is public.

In addition, Patent Registration No. 10-0970694 discloses a method of manufacturing a tire, comprising: (i) sequentially producing an unfinished green tire structure having a toroidal shape in at least one assembly line (100)

(Ii) temporarily loading said unfinished structures (13, 13a, 13b) produced by said at least one assembly line (100)

(Iii) transferring the unfinished structure (13, 13a, 13b) to at least one completion station (200)

(Iv) at least one finish station (200), wherein at least one continuous elongated element of raw elastomeric material is laid down along a predetermined path on each unfinished structure (13, 13a, 13b) Forming a component;

And (v) feeding the green tire 13c thus produced to the vulcanization step, wherein the step of producing the respective unfinished green tire structures 13, 13a, 13b comprises the steps of (i-a) Drying (building) a carcass structure 3 in the form of a cylindrical sleeve having at least one carcass ply 10 operatively associated with spaced annular reinforcing structures 7,

(I-b) shaping the carcass structure (3) so as to have a toroidal shape.

In addition, Patent Registration No. 10-1243644 discloses a method of manufacturing a packing member for a pipe coupling used for connecting a plurality of pipes for transferring a fluid or a gas, wherein a soft synthetic resin is put into an extrusion molding machine, Extrusion molding a packing member having a plurality of pressure protrusions; Cutting the extruded packing member to a required length; And placing the packing member cut at the cutting step in a fusing device to fuse both ends of the packing member,

The fusing device includes a housing having an upper space portion, a base plate disposed inside the space portion at a predetermined distance from a bottom surface of the space portion, the base plate having a cut portion formed along a longitudinal direction at a central portion thereof, A pair of lower jigs slidably moved toward the center of the base plate so as to be in parallel to each other and spaced apart from each other at predetermined intervals on both side surfaces of the upper surface of the base plate, A pair of upper jigs each having one end hinged to each other and pivoted toward an upper surface of the lower sheet, and a heater disposed on the upper side of the space and moved up and down toward the cutout, Wherein both ends are pressed by the pair of lower jigs and the pair of upper jigs, And both end portions of the packing member heated locally by the heating heater are fused and fused by the sliding movement of the pair of lower fingers, wherein the upper face of the pair of lower fingers is longitudinally A plurality of vacuum holes are formed between the plurality of fixing grooves so that the lower surface of both ends of the packing member is vacuum-clamped and fixed to the upper surface of the lower sheet, Wherein the lower surface of the pair of upper jigs is formed with a non-slip protrusion along the longitudinal direction, and the non-slip protrusion is formed by pressing the upper surface of the pair of lower sheets with the lower surface of both ends thereof, Of the lower surface of the pipe The method of manufacturing a flat-ring packing member is released.

However, in the above-mentioned techniques, the rubber is deformed due to the stress and excessive deformation causes the wrinkle to form, tearing, or bursting. There is a disadvantage that a defective product which is difficult to use as a product is manufactured.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a rubber- Which prevents the deformation of the rubber-deformed vulcanizing mold, thereby maintaining the shape of the rubber-deforming vulcanizing molding.

The present invention relates to a rubber-deformation vulcanization molding method, in which a pair of left and right rubber plates (100, 200), which are rubber vulcanized with a rubber-deforming vulcanization molding machine which is a press and heating press, are vertically stacked, The rubber deformation vulcanizing machine is attached to the upper molding machine 310 and the lower molding machine 100 by heating and pressing the left rubber plate 100 and the right rubber plate 200 by heating and pressing the left rubber plate 100 and the right rubber plate 200, The upper molding machine 310 is provided with an upper heating plate 311, an upper pressing plate 312 and an upper rubber plate 313 in this order from the upper side to the lower side. The lower rubber plate 323, the lower pressure plate 322, and the lower heating plate 321 are sequentially disposed in the direction of the arrow A, and the stress at the time of heating and pressurization is dispersed to prevent the deformation of the bonding portion.

Therefore, the present invention prevents the deformation of the bonded rubber sheet and the unbonded rubber sheet due to wrinkles or rupture of the rubber sheet by placing the unvulcanized rubber sheet between the vulcanized rubber sheet and the vulcanized rubber sheet, And there is a remarkable effect of maintaining the shape.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.
Fig. 2 is a view after operation of a conventional rubber deformation vulcanizing machine. Fig.
Fig. 3 is a rubber adhesive portion manufactured by a conventional rubber deformation vulcanizing machine; Fig.
Fig. 4 is a front view of the rubber deformation preventing vulcanization molding machine of the present invention. Fig.
Fig. 5 is a view after the operation of the rubber deformation vulcanizing machine of the present invention. Fig.
6 is a rubber adhesive portion produced by the rubber deformation vulcanizing machine of the present invention.
7 is a view showing another embodiment of the rubber-deformation vulcanizing machine of the present invention.

The upper and lower heating plates 311 and 321 are steel plates to which steam or electric heater heat is applied, and the upper and lower pressure plates 312 and 322 are steel plates.

Further, a soft heat-resistant resin is used in place of the upper and lower rubber plates 313 and 323.

The left joining portion 110 has a horizontal shape and the inclined surface 111 is formed such that a surface contacting the right joining portion 210 is inclined from an upper portion to a lower portion. One end of the horizontal portion 212 is connected and the other end of the horizontal portion 212 is formed so that a surface of the horizontal portion 212 which is in contact with the left joining portion 110 is inclined from an upper portion to a lower portion, And two inclined surfaces 213 are formed.

The present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a view showing a conventional rubber deformation preventing vulcanization molding machine, FIG. 2 is a view after the operation of a conventional rubber deformation vulcanization molding machine, FIG. 3 is a rubber adhesion portion manufactured by a conventional rubber deformation vulcanization molding machine, Fig. 5 is a view showing the operation of the rubber deformation vulcanizing machine of the present invention, Fig. 6 is a view showing a rubber adherend manufactured by the rubber deformation vulcanizing machine of the present invention, Fig. 7 is a view Of the present invention.

In the method of forming a rubber deformation-preventing vulcanization molding according to the present invention, the ends of the left and right rubber plates 100 and 200, which are rubber vulcanized with a rubber-deformation vulcanization molding machine as a press and a press, are stacked vertically and an unvulcanized rubber The left joining portion 110 of the left side rubber plate 100 and the right side joining portion 210 of the right side rubber plate 200 are bonded by heating and pressing.

The rubber deformation curl molding machine comprises an upper molding machine 310 and a lower molding machine 320. The upper molding machine 310 includes an upper heating plate 311, an upper pressure plate 312, an upper rubber plate 313 And the lower molding machine 320 has the lower rubber plate 323, the lower pressure plate 322 and the lower heating plate 321 sequentially installed from the upper part to the lower part.

The upper and lower heating plates 311 and 321 are an iron plate structure to which heat is applied by steam supply from outside or heat of a built-in electric heater is applied. The upper and lower heating plates 311 and 321 The upper and lower pressure plates 312 and 322 are steel plates for pressurization.

The upper and lower rubber plates 313 and 323 combined with the upper and lower pressure plates 312 and 322 are plates for preventing the deformation of the left and right rubber plates 100 and 200.

Therefore, the present invention disperses the stress at the time of molding and pressing to prevent the deformation of the bonded portion, thereby maintaining the shape.

In the present invention, the left joining portion 110 has a horizontal shape, and a slope 111 is formed at an oblique angle from an upper portion to a lower portion in contact with the right joining portion 210. One end of the horizontal part 212 is connected to the right joint part 210 after one sloped surface 211 is formed so as to incline obliquely upwards from a certain point to an upper end part and the other end of the horizontal part 212 is connected to the left Two inclined surfaces 213 are formed so that the surface contacting the joining portion 110 is inclined from the top to the bottom.

In the present invention, stress is relieved by using rubber or other resin, sponge or the like which is slightly soft on the pressurized iron plate of the heating pressure press, thereby preventing the product from being damaged.

Depending on the characteristics, the rubber attached to the press-fitted steel plate is physically attached with FKM or other heat-resistant rubber or soft heat-resistant resin. In particular, unvulcanized rubber is used as a material of a material such as rubber, which is an object to be bonded. Physical attachment means fixing by using bolt or using GUIDE plate.

As shown in FIG. 4, the upper and lower heating plates 311 and 321 generate heat and are coupled to the upper and lower molding machines 310 and 320 to move up and down.

The upper and lower pressing plates 312 and 322 are steel plates and transmit heat generated from the upper and lower heating plates 311 and 321 to the upper and lower rubber plates 313 and 323.

As shown in FIG. 5, when pressure is applied to the left and right rubber plates 100 and 200 where the contact ends are overlapped, the upper and lower rubber plates 313 and 323 Fluorine resin series, silicone resin series, or the like is used.

The upper and lower rubber plates 313 and 323 of the fluororesin type or silicone resin type are made of a resin type such as soft rubber, soft Teflon, heat resistant synthetic sponge.

That is, the upper and lower rubber plates 313 and 323 should be heat resistant enough to withstand the temperature of 120 to 180 ° C in order to bond the left and right rubber plates 100 and 200.

The upper and lower rubber plates 313 and 323 should be stretchable in order to distribute the received pressure and to maintain the shape of the left and right rubber plates 100 and 200.

In another embodiment of the present invention, the upper pressing plate is provided with the same metal protrusion, and the upper rubber plate is formed with a hole corresponding to the protrusion in the vertical direction. And the length of the projection is about 1/3 to 1/2 of the hole length.

Therefore, when the upper pressure plate is lowered, the upper rubber plate first contacts the lower rubber plate with the work therebetween, and then the upper and lower rubber plates are compressed and the height becomes shorter as the pressure is applied. At this time, the heat of the projection is transmitted to the work through the hole.

In order to protect the surface of the workpiece as much as possible, the length of the projection should be made shorter than the hole sufficiently to prevent the upper and lower projection ends from coming into contact with each other.

The rubber deformation-preventing vulcanization molding method of the present invention does not damage the rubber product to be bonded and uses unvulcanized rubber as a material of the same material, so that the adhesive force can be increased.

The problem of adhesion between the vulcanized rubber and the upper and lower rubber plates attached to the platen can be solved by applying a releasing agent or by using a forge or a heat resistant film having a releasing effect.

100, 200: left and right rubber plates 110, 210: left and right joints
310: Upper molding machine 311: Upper heating plate
312: upper pressure plate 313: upper rubber plate
320: Lower molding machine 321: Lower heating plate
322: lower pressure plate 323: lower rubber plate
111: slope 211: 1 slope
212: horizontal portion 213: 2 inclined surface
312-1 upper pressure plate projection 322-1: lower pressure plate projection
313-1: upper rubber plate hole 323-1: lower rubber plate hole

Claims

The left and right rubber plates 100 and 200, which are rubber vulcanized by a heating and pressure press vulcanization vulcanization molding machine, are vertically stacked one on top of the other, and unvulcanized rubber is placed therebetween to heat and pressurize the left rubber plate 100, The rubber deformation curl molding machine comprises an upper molding machine 310 and a lower molding machine 320 and the upper molding machine 310 is provided with an upper molding machine 310 and a lower molding machine 320, An upper rubber plate 313 and an upper rubber plate 313 are sequentially installed from the upper side to the lower side and the lower molding machine 320 has a lower rubber plate 323 and a lower rubber plate 322, , And a lower heating plate (321) are successively provided on a surface of the rubber sheet
The upper and lower heating plates 311 and 321 are steel plates to which steam or electric heater heat is applied, the upper and lower pressure plates 312 and 322 are steel plates,
The left joining portion 110 has a horizontal shape and a slanting surface 111 is formed at an oblique angle from the top to the bottom in contact with the right joining portion 210. The right joining portion 210 has a One end of the horizontal part 212 is connected and the other end of the horizontal part 212 is connected to the left end part of the left side joint part 110 in a slanting manner from the upper part to the lower part, An inclined surface 213 is formed,
The upper and lower rubber plates 313 and 323 are heat resistant to withstand the temperature of 120 to 180 ° C for bonding the left and right rubber plates 100 and 200,
In the upper press plate, the same metal material protrusion is formed. In the upper rubber plate, a hole perforated in the vertical direction is formed corresponding to the protrusion, and the length of the protrusion is 1/3 to 1/2 of the hole length. First, the upper rubber plate is brought into contact with the lower rubber plate through the workpiece. Then, as the pressure is applied, the upper and lower rubber plates are compressed and the height is shortened. At this time, the heat of the projection is transferred to the workpiece through the hole,
The vulcanization-preventing vulcanizing agent according to any one of claims 1 to 3, wherein the vulcanization-preventing vulcanizing agent is applied by applying a release agent so as not to cause adhesion between the rubber vulcanized rubber and the upper and lower rubber plates attached to the vulcanization press, Molding method

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