KR19990014014A - Method and apparatus for forming rubber tape for friction roller of loom - Google Patents

Abstract

The present invention is a method for forming a rubber roller for a friction roller of a loom for forming a rubber tape (18) for a loom having a plurality of protrusions 56 forming a friction surface. This method heat pressurizes the silicone rubber paper tape 10 to a conventional abrasive sand paper tape 12 having a large number of microfines 38 attached thereto to finely sand the tape 12 of the sand paper tape 12 onto the silicone rubber paper tape 10. Molding a silicone rubber tape 14 having a molding surface having a plurality of demands 48 corresponding to the shape of the fine stone 38, and a silicone rubber tape having a molding surface having a plurality of demands 48 formed thereon The shape of the request 48 of the silicone rubber tape 14 by heat-pressing and vulcanizing the rubber raw paper tape 16 having a hardness lower than that of the silicone rubber constituting the silicone rubber tape 14). And forming a rubber tape 18 having a friction surface having a plurality of protrusions 56 corresponding thereto.

Description

Method and apparatus for forming rubber tape for friction roller of loom

The present invention relates to a method and apparatus for forming a rubber tape of a friction roller used to enable a loom or the like to pull a fabric by friction in a textile machine.

This kind of rubber tape has a function of drawing fine protrusions on the surface and pulling the fabric supplied from the loom when winding the fabric to the winding roller.

Conventionally, such a rubber tape has been introduced to the rubber drum tape is supplied to the forming drum formed with a plurality of fine concave surface on the main surface to form a plurality of fine projections on one side thereof (Utility Model Registration No.17844, Publication No. 80 -212). However, in such a molding apparatus, a large number of fine grooves are formed on the main surface of the forming drum by pressurization and vulcanization of the rubber tape to which the structure is formed. As the wear progresses when used, the friction against the fabric is greatly reduced. In addition, in such a molding apparatus, the processing of the molding drum takes a lot of time and cost, and the uneven molding surface of the molding drum is easily worn, so there is a short life of the molding drum.

In consideration of this prior art, the resin adhesive layer is coated on the surface of the molding drum without mechanically processing the uneven molding surface having the recesses on the molding drum, and then the microfine stones of the irregular shape are adhered to form the uneven molding surface. It is known that the minute projections can be formed on one side of the rubber dough tape by this uneven surface (Utility Model Registration No. 101794, Publication No. 96-8090). This prior art is illustrated in FIGS. 14 and 15. That is, a large number of microfine stones 3 having irregular shapes of about 1-0.5 mm are bonded to the resin adhesive layer 2 which is coated on the main surface of the molding drum 1. The uneven surface of one side of the rubber tape 4 formed therefrom is the uneven surface of the fine projection 6 due to the shape between the fine fine stone 3 demanded by the fine fine stone 3 and the fine fine stone 3. And the fine protrusions 6 constitute a friction surface of the rubber tape 4. However, since the shape of the fine protrusions 6 constituting the friction surface of the rubber tape 4 is determined by the shape of the top surface of the resin adhesive layer 2 whose upper end is coated on the main surface of the forming drum 1, the fine protrusions 6 are fine. Each upper end of the projection 6 is placed on substantially the same plane, so there is a drawback that the initial slip phenomenon is noticeable when the friction roller is used.

In the present invention, invented in view of such a drawback of the prior art, the rubber tape does not show the initial slip phenomenon of the rubber tape, and the rubber tape so that the effective friction can be achieved even if the fine projection of the friction surface wears when used The purpose is to provide.

In the present invention, forming the uneven surface on the rubber tape substantially is a silicone rubber tape having the uneven surface forming the uneven surface, and forming the uneven surface on the silicone rubber tape has a large number of microfine stones attached thereto. Abrasive sandpaper.

The abrasive sandpaper is coated with a resin adhesive layer on a base material of textiles, and a large amount of amorphous microfine stones having a particle size according to the number of times is attached thereto. On the other hand, as the silicone rubber paper tape is pressurized and heated, the surface of the silicone rubber paper tape is formed with fine fine stone of the sand paper tape and a compensating convex-molded surface corresponding to the space therebetween. The uneven molded surface was molded on one side of the silicone rubber tape to the silicone rubber tape. The uneven surface of the silicone rubber tape is composed of fine protrusions formed by the space between the fine pores and the fine pores formed by the fine fine sand of the sand paper tape.

The silicone rubber paper tape is supplied together with sand paper to a vulcanizing apparatus called Rotocure, which is heated and pressurized by the heater-embedded main roller of the vulcanizing apparatus to form an uneven surface on one side.

Subsequently, the silicone rubber tape and the rubber dough tape on which the uneven forming surface is formed are supplied to the same vulcanizing apparatus, and the rubber dough tape is formed with the uneven surface matching the fine fine distribution and shape of the sand paper tape to form the rubber tape used for the friction roller. Will be.

According to a first aspect of the present invention, there is provided a method for forming a rubber tape for a friction roller of a loom for forming a rubber tape for a loom having a plurality of protrusions forming a friction surface. Heating and pressurizing the silicone rubber paper tape to a conventional abrasive sand paper tape to form a silicone rubber tape having a molding surface having a plurality of demands corresponding to the shape of the microfines of the sand paper tape on the silicone rubber paper tape; Silicone rubber tape having a molded surface having the required requirements is subjected to heat pressurization and vulcanization treatment of rubber raw material tape having a lower hardness than that of the silicone rubber constituting the silicone rubber tape to meet the shape of the silicone rubber tape. It consists of forming a rubber tape having a friction surface having a plurality of projections It is characterized by.

The step of forming the silicone rubber tape is carried out between the main roller and the endless steel band of the vulcanizing device in the vulcanizer composed of a heater-built main roller and an endless steel band which is pressed against the main surface of the main roller. It is composed of a step of supplying heat to pressurized.

In addition, the step of forming the rubber tape is a vulcanizer composed of a heater-built main roller and an endless steel band which is pressed while being pressed against the main surface of the main roller, and the silicone rubber tape and the rubber dough tape are vulcanized by the main roller and the endless steel band of the vulcanizer. It is composed of the steps of feeding, heating and pressurizing and vulcanizing.

As a variant of the embodiment according to the first aspect of the present invention, the step of forming the silicone rubber tape comprises sand paper tape on the lower fixed press plate in a press forming apparatus comprising a lower fixed press plate and an upper movable press plate of a heater-embedded type. It may be fixed and attached and supplied with a silicone rubber paper tape between the sand paper tape and the upper movable press plate, and heat-pressing the upper movable press plate.

In addition, the step of forming the rubber tape is performed by fixing and attaching the silicone rubber tape on the lower fixed press plate in a press forming apparatus consisting of a lower fixed press plate and an upper movable press plate of a heater-embedded type, and between the silicone rubber tape and the upper movable press plate. By supplying the rubber dough tape may be composed of a step for heating and pressurizing and vulcanizing the upper movable press plate.

The present invention is characterized in that the shape of the projection constituting the friction surface of the rubber tape is the same as that of the fine fine stone of the sand paper tape.

According to the second aspect of the present invention, there is provided an apparatus for forming a rubber tape for a friction roller of a loom for forming a rubber tape for a loom having a plurality of protrusions forming a friction surface. It consists of the upper and lower pressure rollers arranged on the side, and the tension rollers arranged on the rear of the main roller, and the endless steel band is wound around the pressure roller and the tension roller, and a part of the endless steel band is on the upper, lower and back sides of the main roller. It consists of a vulcanizing device which is passed through while being pressurized, and the sand paper tape from the sand paper tape roll and the sand paper tape from the silicone rubber paper tape roll are supplied between the main roller and the endless steel band between the main roller and the upper press roller in the first molding step. From the silicone rubber tape roll between the main roller and the endless steel band in the second molding step. And it characterized in that it is so that the rubber dough tape from the silicone rubber tape and a rubber dough roll of tape may be supplied.

According to a third aspect of the present invention, there is provided a molding machine for a rubber roller for a friction roller of a loom for forming a rubber tape for a loom having a plurality of protrusions forming a friction surface. Consists of the upper movable press plate, sand paper tape of a certain length is attached to the lower fixed press plate in the first molding step, and the silicone rubber paper tape is supplied between the sand paper tape and the upper movable press plate and heated and pressed by the upper movable press plate. In the second molding step, the silicone rubber tape is attached to the lower fixed press plate so that the rubber raw paper tape is supplied between the silicone rubber tape and the upper movable press plate and heated and pressurized by the upper movable press plate to be vulcanized. It features.

Referring to the present invention in more detail based on the accompanying drawings as follows.

1 shows an apparatus for carrying out the method of the present invention, which is a schematic diagram of the apparatus in which the first molding step of the method of the present invention is performed.

2 is a schematic structural diagram of a device in which a second molding step is performed;

3-11 is an explanatory diagram illustrating the whole process of the method of the present invention.

12 is a schematic diagram showing another embodiment of an apparatus for performing the method of the present invention;

13 is a front view of a friction roller for a loom constructed by using a rubber tape molded according to the present invention.

14 and 15 are cross-sectional views showing that the rubber tape is molded according to the prior art.

Explanation of Signs of Major Parts of Drawings

10; Silicone rubber paper tape 12; Sandpaper Tape

14; Silicone rubber tape 16; Rubber dough tape

18; Rubber tape 38; Micro Fine Stone

48; Demand 56; spin

1 and 2, respectively, according to the present invention, the silicone rubber paper tape 10 is molded into a silicone rubber tape 14 having a concave-convex forming surface by sand paper tape 12, and the rubber paper tape 16 is silicone rubber. The vulcanization apparatus 20 is shown which is molded by the tape 14 into the rubber tape 18 which has an uneven surface.

The vulcanizing device 20 is a type of device known as Rotocure, which includes a main roller 22 having a heater built-in type, and upper and lower pressurizing rollers 24 and 26 disposed above and below the main roller 22. , And a tension roller 28 disposed at the rear of the main roller 22, and the endless steel band 30 is wound around the pressure roller 24, 26 and the tension roller 28, and the endless steel band 30. A portion of the main roller 22 is pressed to the upper and lower and the rear side of the circular arc-shaped auxiliary heater 32 is disposed behind it.

FIG. 1 shows a process in which the silicon rubber paper tape 10 and the sand paper tape 12 are supplied to the vulcanizing device 20 to form the uneven molded surface on the silicone rubber tape 14.

As already mentioned, and as the cross section is exaggerated for the sake of explanation in Fig. 3, the sandpaper tape 12 has a resin adhesive layer 36 layered on a long substrate 34 made of woven fabrics, It is of the same structure as the abrasive sandpaper of the general form to which the amorphous microfines 38 are attached. This sandpaper tape 12 may be understood that the irregular microfines 38 on the surface are protrusions and a demand is formed between them.

As the silicone rubber paper tape 10, silicone rubber having heat resistance up to 250 ° C and a hardness (Shore A) of 82 ° was used as one of its physical properties. In addition, the physical properties of the silicone rubber used in the present invention are as follows.

Silicon High Properties

Product Name Silicone GP800

Specific gravity (25 ℃) 1.22

Shore A 82 °

Tensile Strength (㎏f / cm) 83

Compressed permanent reduction rate (%) 35

Elongation (%) 250

Heat resistance 250 ℃

Cold resistance -70 ℃

Using the silicone rubber of such physical properties, a silicone rubber paper tape 10 having a thickness of about 4 mm is obtained.

As the rubber dough tape 16, rubber dough having a hardness (Shore A) of 69 ° having a hardness lower than that of the silicone rubber was used as one of physical properties. In addition, the physical properties of the rubber dough used in the present invention are as follows.

Properties of Rubber Dough

Product name NBR

Specific gravity (25 ℃) 1,09

Shore A 69 °

Tensile Strength (㎏f / ㎝) 57

Compressed permanent reduction rate (%) 30

Elongation (%) 200

Heat resistance (Max) 100 ℃

Cold resistance (Min) -25 ℃

Rubber materials of such physical properties are made of NBR as the main raw material, carbon, filler, vulcanizing agent, softener, plasticizer, anti-aging agent, vulcanization accelerator, etc. are added in appropriate amounts as reinforcing materials, and the thickness required by passing through the calendering machine, for example, 4 to 4 A rubber dough tape 16 having a thickness of about 5 mm is obtained.

The composition or composition of the above-mentioned sand paper tape, silicone rubber dough tape and rubber dough paper itself does not constitute the present invention, but the hardness of the rubber dough tape is greater than that of the silicone rubber dough tape as understood in the following description. Low is required.

The above description describes the vulcanizing device 20 as a component for carrying out the method of the present invention and the sandpaper tape 12 and the silicone rubber tape 14 for obtaining the rubber tape 18 through the vulcanizing device 20. And the configuration and physical properties of the rubber dough tape (16).

Now, the molding method of the rubber tape will be described.

In Fig. 1, in the first step, a main roller having an endless steel band 30 and a smooth circumferential surface between the main roller 22 (rotated in the direction of the arrow) and the upper press roller 24 of the vulcanizing device 20 is shown in the first step. The sand paper tape 12 from the sand paper tape roll 40 and the silicone rubber paper tape 10 from the silicone rubber paper tape roll 42 are supplied together between the two portions 22. As already mentioned, the sandpaper tape 12 has a structure in which a large number of amorphous microfines 38 are attached to the resin adhesive layer 36 on the substrate 34 (see Fig. 3). The sand paper tape 12 is supplied to the vulcanizing device 20 in a state in which the surface on which the fine fine grains 38 are attached faces the silicone rubber paper tape 10 (see FIG. 4). When the sand paper tape 12 and the silicone rubber paper tape 10 are supplied to the main roller 22 of the vulcanizing apparatus 20, the heat paper tape 12 is heated and pressed between the main roller 22 and the endless steel band 30 (see FIG. 5). ). At this time, the surface on which the fine fine sand 38 of the sand paper tape 12 is attached is pressed against the silicone rubber raw paper tape 10, so that the fine fine stone 38 penetrates into the silicone rubber raw paper tape 10. In this way, the sand paper tape 12 and the silicone rubber paper tape 10 squeezed from each other in the vulcanizing device 20 are moved between the main roller 22 and the lower press roller 26 and joined to the separation roller 44. The sandpaper tape 12 is then wound up in a sandpaper tape recovery roll 46 and separated therefrom by the microfines 38 of the sandpaper tape 12 between the corresponding demands 48 and the finesight 38. The silicone rubber tape 14 in which the protrusions 50 corresponding to the spaces of the molds are formed is wound on the silicone rubber tape roll 52.

Thus, the silicone rubber tape 14 in which the request 48 and the projection 50 are formed by the sand paper tape 12 is described in detail in FIG.

In the second step, between the main roller 22 and the upper pressing roller 24 of the vulcanizing device 20 between the main roller 22 and the endless steel band 30 using the vulcanizing device 20 of the first step. Rubber rubber tape 14 from silicone rubber tape rolls 52 and rubber dough tape rolls 54 from a silicone rubber tape roll 52 having a molding surface on which a demand 48 and a projection 50 are formed. Is supplied. At this time, the molding surface of the silicone rubber tape 14 is supplied in a state in which it is disposed toward the rubber dough tape 16 (see Fig. 8).

As already mentioned, since the hardness of the silicone rubber constituting the silicone rubber tape 14 is higher than that of the rubber constituting the rubber dough tape 16, it is necessary to form the molding surface of the silicone rubber tape 14 (48). ) And the projection 50 are formed without being deformed and the rubber dough tape 16 is pressed against it (see Fig. 9). In this molding process, the rubber dough tape 16 is vulcanized to be completed with a rubber tape 18, which has a compensation protrusion 56 corresponding to the demand 48 of the silicone rubber tape 14. And a request 58 in the form of compensation corresponding to the projection 50 of the silicone rubber tape 14 is formed (see Fig. 10). The protrusion 56 of the rubber tape 18 is formed in the same shape as the shape of the microfines 38 of the sandpaper tape 10 through the silicone rubber tape 14, and the request 58 is made of microfines ( It is molded in the same shape corresponding to the space between 38).

The rubber tape 18 in which the protrusion 56 and the request 58 are formed by the silicone rubber tape 14 is separated from the silicone rubber tape 14 while passing through the separation roller 44 and thus the rubber tape roll 60. ), The silicone rubber tape 14 is wound around the silicone rubber tape recovery roll 62.

After the rubber tape 18 is cut into narrow widths, the rubber tape 18 is wound and used in a friction roller 64 for a loom as shown in FIG.

As such, the rubber tape 18 having the friction surface having the same shape as that of the fine fine grains 38 of the sandpaper tape 12 having the excellent frictional effect in its shape is usually formed for polishing through the silicone rubber tape 14. The protrusion 56 constituting the substantially friction surface of the rubber tape 18 has an excellent friction effect on the fabric, there is no initial slip phenomenon, and due to the irregular shape of the protrusion 56 even when the wear progresses. There is an advantage that the friction effect can be maintained as it is.

12 shows another embodiment of an apparatus for carrying out the method of the present invention, which is a press forming apparatus 66, which comprises a heater-mounted lower fixed press plate 68 and an upper movable press plate 70. It is composed.

In carrying out the method of the present invention using the same, as the first step, the sand paper tape 12 is cut and fixed to a fixed length on the upper surface of the lower fixed press plate 68, and the silicone rubber paper tape 10 is attached thereto. Intermittently supplied, the silicone rubber paper tape 10 is pressurized by the upper movable pressing plate 70 with respect to the fine fine-adhering surface of the sand paper tape 12 to obtain a silicone rubber tape 14 having a molding surface. have. Thereafter, using the same press-forming apparatus 66, the silicone rubber tape 14 having a predetermined length is attached to the lower fixed press plate 68, and the rubber dough cap 16 is supplied thereto. The movable press plate 70 is vulcanized by heat and pressure to obtain a rubber tape 18 having the same friction surface shape as the friction surface of the Sands paper tape 12.

It can be seen that the method performed by this embodiment is performed the same except that the molding time is longer than that of the preceding embodiment.

As described above, the present invention is used for ordinary polishing through the silicone rubber tape, and a rubber tape having a friction surface having the same shape as that of microfine stone of sandpaper tape having an excellent friction effect can be formed. The projection constituting the friction surface has the advantage of having excellent friction effect on the fabric, no initial slip phenomenon, and the friction effect is maintained as it is due to the irregular shape of the projection even when the wear progresses.

Claims (8)

In the method of forming a friction roller rubber tape for a weaving machine for forming a rubber tape 18 for a loom having a plurality of protrusions 56 forming a friction surface, this method is a conventional method in which a plurality of microfines 38 are attached. A number of demands 48 corresponding to the shape of the fine fine sand 38 of the sandpaper tape 12 are applied to the silicone rubber paper tape 10 by heating and pressing the silicone rubber paper tape 10 with respect to the abrasive sand paper tape 12. Molding the silicone rubber tape 14 having a molding surface having a molding surface, and the silicone rubber constituting the silicone rubber tape 14 with respect to the silicone rubber tape 14 having a molding surface having a plurality of requests 48. The rubber dough tape 16 having a lower hardness than the hardness of the rubber dough tape 16 is heated and vulcanized to form a friction surface having a plurality of protrusions 56 corresponding to the shape of the request 48 of the silicone rubber tape 14. Rubber tape (18) The method for forming a rubber tape for a friction roller of the weaving machine, characterized by consisting of a step of. The vulcanizing apparatus according to claim 1, wherein the step of forming the silicone rubber tape 14 comprises an endless steel band 30 passing through the main roller 22 of the heater-embedded type and the main surface of the main roller 22. 20) the sand paper tape 12 and the silicone rubber paper tape 14 is supplied between the main roller 22 and the endless steel band 30 of the vulcanizing device 20, the method comprising the step of heating and pressing . 2. The vulcanizing apparatus (20) according to claim 1, wherein the step of forming the rubber tape (18) comprises an endless steel band (30) passing through the main roller (22) of the heater type and the main surface of the main roller (22). It is characterized in that it comprises a step of supplying the silicone rubber tape 14 and the rubber dough tape 16 between the main roller 22 and the endless steel band 30 of the vulcanizing device 20 to heat and pressurize and vulcanize. How to. The method according to claim 1, wherein the step of forming the silicone rubber tape (14) is performed on the lower fixed press plate (68) in a press forming apparatus consisting of a lower fixed press plate (68) and an upper movable press plate (70) of a heater-embedded type. The sand paper tape 12 is fixedly attached thereto, and the silicone rubber paper tape 10 is supplied between the sand paper tape 12 and the upper movable press plate 70 and heated and pressurized by the upper movable press plate 70. Characterized by the above. The method according to claim 1, wherein the step of forming the rubber tape (18) is performed on the lower fixed press plate (68) in a press forming apparatus consisting of the lower fixed press plate (68) and the upper movable press plate (70). The silicone rubber tape 14 is fixedly attached, and rubber rubber tape 16 is supplied between the silicone rubber tape 14 and the upper movable press plate 70 to heat and pressurize and vulcanize the upper rubber press plate 70. Method consisting of steps. 2. Method according to claim 1, characterized in that the shape of the projections (56) constituting the friction surface of the rubber tape (18) is the same as the shape of the microfines (38) of the sandpaper tape (12). In the apparatus for forming a friction roller rubber tape for a weaving machine for forming a rubber tape 18 for a loom having a plurality of protrusions 56 forming a friction surface, the apparatus is provided on the main roller 22 and the upper and lower sides of a heater-embedded type. Composed of the upper and lower pressure rollers (24) and (26) disposed, and the tension roller (28) disposed behind the main roller (22), and the endless steel band (30) is tensioned with the pressure rollers (24) and (26). It is composed of a vulcanizing device (20) wound around the roller (28) and a portion of the endless steel band 30 is pressed to the upper, lower and back side of the main roller (22), the main roller (22) in the first molding step Between the main roller 22 and the endless steel band 30 between the upper press roller 24 and the sandpaper tape 12 from the sand paper tape roll 40 and the sand paper tape from the silicone rubber paper tape roll 42. 12 is supplied, and the main roller 22 and the endless steel band 3 in the second molding step. The rubber for friction roller of the loom characterized by being able to supply the silicone rubber tape 14 from the silicone rubber tape roll 52 and the rubber dough tape 16 from the rubber dough tape roll 54. Tape forming apparatus. In the apparatus for forming a friction roller rubber tape for a weaving machine for forming a rubber tape 18 for a loom having a plurality of protrusions 56 forming a friction surface, the apparatus includes a lower fixed press plate 68 having a heater built-in type. It consists of a movable press plate 70, a sandpaper tape 12 of a predetermined length is attached to the lower fixed press plate 68 in the first molding step, and between the sandpaper tape 12 and the upper movable press plate 70 The silicone rubber paper tape 12 is supplied and heated and pressurized by the upper movable press plate 70, and the silicone rubber tape 14 is attached to the lower fixed press plate 68 in the second molding step. The rubber dough tape 16 is supplied between the 14 and the upper movable press plate 70 and heated and pressurized by the upper movable press plate 70 to be vulcanized. Tape forming apparatus.