KR200208280Y1 - Apparatus for forming pressure-resistant hose - Google Patents

Abstract

The present invention is equipped with a conveying roller mounted on one side of the upper surface of the base, the spreading and conveying means for inducing the fabric on the roll to stably proceed in the longitudinal direction of the base; An introduction plate installed at a rear end of the transfer means and having a molding groove to be bent when the fabric passes; A molding support provided in the longitudinal direction on the base and continuously processing a U-shaped groove on an upper surface thereof; A plurality of forming means mounted on a forming support to gradually form the overlapped fabric by passing the fabric passing through the introduction plate; A hose forming rod installed to be supported by the forming means to form a predetermined gap with the U-groove and the forming means of the forming support; A nozzle installed at a rear adjacent portion of the forming means to apply an adhesive to the overlapping portion of the fabric; And a pair of pressing means installed in contact with the inside and the outside of the hose forming rod to press the adhesive applied to the overlapping portion through the nozzle.

Description

Apparatus for Forming Pressure-Resistant Hose}

The present invention relates to a pressure-resistant hose molding apparatus, and more particularly, to a pressure-resistant hose molding apparatus to form a plate-shaped fabric in a circular shape by applying an adhesive to the joint surface and pressurized continuously.

Usually, the fabric supplied from the take-up roll is passed through a forming mold processed into a predetermined shape in order to form and join a plate-shaped fabric by a continuous process. Inside the mold, a plurality of rollers are installed to closely adhere the fabric, and the roll-shaped fabric passed through is slowly rolled. When the tube is completed, the pressure-sensitive hose is completed when the adhesive is added to the overlapping part.

However, unlike the case of metal tube manufacturing, the flexible hose can easily damage the fabric due to the friction contact has a disadvantage that can not maintain the appropriate durability to meet the purpose of the pressure-resistant hose.

In order to prevent this, the applicant has proposed a configuration in which a plurality of forming blocks are mounted at the center on the guide of the circular cross section and a plurality of rollers and adhesive nozzles are mounted at the rear end. According to this, the air flow path is installed in the guide by spraying air on the inner surface of the fabric to be transported to minimize the contact resistance of the fabric to prevent friction damage. The adhesive is sprayed from the adhesive nozzle to the overlap of the fabric prior to passing through the plurality of rollers at the rear end of the guide, and the hose is continuously completed as this adhesive solidifies.

However, according to this configuration, the adhesive applied to the overlapping portion of the pressure-resistant hose, if it is not evenly applied to the end, the end is not tightly coupled to maintain the separated state due to the influence of the fluid (or gas) transported It shows fluidity, such as severe tremors, and it is pointed out that a serious problem of peeling off adhesive parts or separating ends from each other due to such unstable adhesion is a fatal problem in maintaining the high durability required by the pressure resistant hose. Will lead to

Moreover, due to the unstable shaking of the supplied fabric, it was difficult to keep the adhesive coating position constant from the overlapped ends of the fabric, which caused frequent defects in manufacturing, thus overcoming the above problems. Has been.

In addition, in view of the above problems, when the excessive adhesive is supplied, the sprayed adhesive leaks due to the pressing force of the roller, which causes the leaked adhesive to solidify on the roller and the guide, thereby greatly reducing the merchandise of the hose. Will cause problems.

The present invention is to solve the above problems, while forming a plate-shaped fabric in a circular shape by applying an adhesive to the bonding surface and pressurized by suppressing the shaking of the fabric in the process of manufacturing the hose continuously, it is possible to supply a stable fabric It is an object of the present invention to provide a pressure-resistant hose having a high value which maintains a constant position of the adhesive strip through a stable supply of fabric.

Another object of the present invention is to provide a pressure resistant hose molding apparatus which minimizes loss of fabric and at the same time has excellent reliability of internal pressure.

1 is a perspective view showing the overall configuration of a molding apparatus according to the present invention,

Figure 2 is an illustration of the side of the present invention molding apparatus,

Figure 3 is a plan view of the molding apparatus of the present invention,

4 is an enlarged cross-sectional view taken along line IV-IV of FIG. 3;

5 is an enlarged cross-sectional view taken along line V-V of FIG.

6 is an enlarged sectional view taken along line VI-VI of FIG. 3;

7 is an enlarged cross-sectional view taken along line VII-VII of FIG. 3;

Explanation of symbols on the main parts of the drawings

10: forming support 12: feed roller

13: Support 15: Introduction Edition

20: hose forming rod 21, 22, 23: forming block

25: roller insertion groove 26: cold air injection pipe

27: cold air discharge pipe 28, 41a, 42a: grooved

29: adhesive strip press guide 30: adhesive nozzle

40: pressure roller 41: pressure upper roller

42: pressurized lower roller

In order to achieve this object, the present invention provides an apparatus for continuously molding a plate-shaped fabric wound on a roll into a tubular member having a circular cross-section: a feed roller is mounted on one side of an upper surface of the base, and the fabric on the roll is Fabric spreading and conveying means for inducing to proceed stably in the longitudinal direction; An introduction plate installed at a rear end of the transfer means and having a molding groove to be bent when the fabric passes; A molding support provided in the longitudinal direction on the base and continuously processing a U-shaped groove on an upper surface thereof; A plurality of forming means mounted on a forming support to gradually form the overlapped fabric by passing the fabric passing through the introduction plate; A hose forming rod installed to be supported by the forming means to form a predetermined gap with the U-groove and the forming means of the forming support; A nozzle installed at a rear adjacent portion of the forming means to apply an adhesive to the overlapping portion of the fabric; And it is characterized in that it comprises a pair of pressing means which is installed in contact with the inside and outside of the hose forming rod to press the adhesive applied to the overlapping portion through the nozzle.

As another feature of the present invention, the forming means, the angle of the first forming block for supporting one end of the hose forming rod, and the processing fabric is installed and transported to cover a portion of the hose forming rod exposed to the upper surface of the forming support And a second forming block for bending one end to the inside and a third forming block for guiding the remaining ends of the processing fabric to be conveyed by covering the entire portion of the hose forming rod exposed to the upper surface of the forming support.

As another feature of the present invention, the hose forming rod is provided with an incision surface on an upper side of the rear end portion of the forming means so that the overlapping portion of the original fabric does not come into close contact, and the pressing means further has a gap coinciding with the surface of the hose forming rod. It is provided with a pressurized upper roller and a pressurized lower roller which is installed on the rotation axis perpendicular to the state while maintaining the, and the grooves are spaced apart from the outer circumferential surface of the pressurized upper roller and the pressurized lower roller to prevent adhesion of the leaked adhesive. It is characterized by being formed.

As another feature of the present invention, a cold air injection pipe and a cold air discharge pipe are formed so as to rapidly solidify the adhesive sprayed from the adhesive nozzle to an adjacent portion of the pressurized lower roller which is rotatably installed on the rear end cut surface of the hose forming rod. It is characterized by laying.

Meanwhile, the pressure resistant hose according to the present invention includes a method of continuously forming a plate-shaped fabric wound on a roll into a tube member having a circular cross section: a conveying step of allowing the plate-shaped fabric to proceed in one direction; A molding step of gradually reducing the radius of curvature of the fabric to be conveyed and forming an overlapping portion at one end thereof while circularizing it; And a bonding step of applying an adhesive on the overlapped portion of the fabric to be transferred, and tightly compressing the overlapped portion from the inside and the outside so that the adhesive applied to the overlapped portion is sufficiently pushed out to the outside of the fabric end.

Another feature of the present invention is characterized in that it further comprises the step of rapidly solidifying the adhesive liquid pushed out of both ends of the fabric by spraying the refrigerant from the inside of the molded hose when the pressure is applied after the adhesive is applied.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

1 is a perspective view showing the overall configuration of a molding apparatus according to the present invention, Figure 2 is a side view of the molding apparatus of the present invention, Figure 3 shows a plan view of the molding apparatus of the present invention, respectively.

4 is an enlarged cross-sectional view taken along line IV-IV of FIG. 3, FIG. 5 is an enlarged cross-sectional view taken along line VV of FIG. 3, FIG. 6 is a enlarged cross-sectional view taken along line VI-VI of FIG. 3, and FIG. 7 is a line VII of FIG. 3. -VII line enlarged cross-sectional view.

As shown, one side of the molding apparatus according to the present invention is provided with an apparatus for continuously molding the plate-shaped fabric wound on the roll 11 into a tube member of a circular cross section.

One side of the base 1 of the present invention is equipped with a roll 11 wound around the fabric (R). And on the upper side of this base 1, the feed means comprised of the feed roller 12, the support 13, the tension roller 14, etc. are sequentially mounted. The conveying means performs a function of inducing the fabric R on the roll 11 to proceed stably in the longitudinal direction of the base 1. To this end, the feed roller 12 is driven by the motor (M) to transfer the fabric (R) with friction, the support 13 removes the flow in the width direction according to the transfer of the fabric (R), tension roller ( 14) maintains a constant feed speed by applying the appropriate tension to the fabric (R) to be transferred.

In addition, according to the present invention, the introduction plate 15 having a forming groove (15a) is installed on the base (1) in the rear end side of the conveying means so that the fabric (R) passes and bends. The plate-shaped fabric R passing through the support 13, which is the final end of the conveying means, begins to be bent for the first time in the introduction plate 15. The forming groove 15a of the introduction plate 15 is processed into a U shape having a sufficiently large radius of curvature so as to prevent sudden curvature reduction of the fabric, and the width of the inlet is processed wider than the outlet width to form the forming groove 15a. Therefore, the frictional resistance of the fabric to be inserted is minimized.

As the introduction plate 15 of the present invention, a donut-type pressing member for pressing the supplied fabric R from the top to bend inward may be used. Such a donut-type pressing member, which is applied as another embodiment of the present invention, is pressed by such a pressing plate when installing a pressing plate made of a U-type or a C-type as well as the lower end of the presser plate. Since the fabric is processed into a sieve U shape maintaining a relatively large radius of curvature, it will be sufficient to maintain the preliminary curvature required by the present invention.

In addition, according to the present invention, the molding support 10 is provided by processing the U-shaped groove (10a) on the upper surface on the output side of the conveying means to gradually bend the fabric (R) passing through the introduction plate 15 to form an overlap portion. do. U-shaped groove (10a) is to be configured in a semi-circular shape with the radius and curvature of the tube member to be molded, it is preferable that the U-shaped groove (10a) of the molding support 10 to be polished in a mirror state to cure the wear resistance.

And it is equipped with a molding means for sequentially bending the raw material (R) supplied consisting of a plurality of blocks on such a molding support (10). As described later, the forming means may include the first forming block 21, the second forming block 22, and the third forming block 23 separately and continuously arranged. As such, when the first, second, and third forming blocks 21, 22, and 23 are divided into a plurality of pieces instead of being integrally formed, the frictional resistance during the molding process is minimized to reduce the driving load and prevent damage to the fabric. It is advantageous in that.

In addition, according to the present invention, the hose forming rod 20 of the circular cross section is supported by a unit block of the forming means so as to form a constant gap with the U-shaped groove 10a of the forming support 10 and the forming means consisting of a plurality It is provided as is.

The hose forming rod 20 passes through the first forming block 21, the second forming block 22, and the third forming block 23 of the forming means in order, and extends to the lower end side of the third forming block 23. Is installed in the length to be. Since the hose forming rod 20 cannot be directly mounted on the molding support 10, which is a path through which the fabric R is transferred, by using a portion of the forming means that does not cause interference due to the transfer of the fabric R. Mount it.

In addition, according to the present invention, the upper and lower pairs of pressure rollers 40 are fitted into the roller insertion grooves 25 processed in the hose forming rods 20 so as to compress the overlapping portions of the fabric R together with the adhesive A. It is installed in the form. As shown in FIG. 2, an adhesive nozzle 30 is installed between the third forming block 23 and the pressure roller 40 to apply the adhesive A to the overlapping portion of the fabric.

For a detailed configuration of the pair of pressure rollers 40 provided at the lower end side of the adhesive nozzle 30, see FIG. 7 to be described later.

Among the forming means according to the present invention, the first forming block 21 forms an angle structure as shown in FIG. 4, and supports one end of the hose forming rod 20. Reference numeral 24 is a member for connecting the first forming block 21 and the hose forming rod 20, it is preferable to configure the height adjustable. The first forming block 21 supports the hose forming rod 20 and the forming support 10 to maintain a constant gap.

On the other hand, as shown in FIG. 5, the second forming block 22 faces a portion exposed from the hose forming rod 20 to the upper surface of the forming support 10, and the third forming block 23 is the hose forming rod. Opposed to the entire portion exposed to the upper surface of the molding support 10 in 20, which is shown in detail in FIG. Accordingly, the fabric (R) has a pipe member shape of the completed circular cross section while finally passing through the gap of the third forming block (23).

In the drawing, the second forming block 22 faces and maintains a gap with the hose forming rod 20 in the range of about 90 °, and the third forming block 23 forms a gap with the hose forming rod 20 in the range of 180 °. Remains opposite. However, this may vary depending on the spacing of the first, second, and third forming blocks 21, 22, 23, and ultimately, the fabric R is determined in terms of being transferred and molded with the least power.

In this case, the inlets 22a and 23a of the second forming block 22 and the third forming block 23 are formed so that the gap is wider at the front end side through which the fabric R is introduced and the gap is narrowed toward the lower end side. . In addition, the gap between the hose forming rod 20 supported by the first forming block 21 and the corresponding portion of the forming support 10 can be adjusted by varying the interval. Accordingly, the transfer resistance can be reduced without affecting the formability of the fabric (R).

On the other hand, the first, second, and third forming blocks 21, 22, 23 having such a configuration are easier to arrange the mutual distances to be narrower, so that the length of the molding support 10 is reduced and the apparatus is downsized. It is advantageous to.

FIG. 7 is an enlarged longitudinal cross-sectional view illustrating the rear end of the hose forming rod 20 in order to explain the adhesive coating process.

The hose forming rod 20 according to the present invention, the upper cutting surface (20a) as described above in the position starting from the lower side of the forming means to maintain a predetermined gap between the overlapping portion of the original fabric (R) ). The upper cut surface 20a is formed in the axial direction of the hose forming rod 20 through milling on the surface of the hose forming rod 20.

In other words, the fabric passing through the third molding block 23 is formed with an overlapping portion overlapping the inner and outer sides. When the upper cutting surface 20a of the hose forming rod 20 is reached, the inside of the wound fabric is temporarily deflected and deformed while being spaced apart. Since the gap is formed, the interference between the fabric and the adhesive nozzle 30 is prevented. Therefore, damage to the fabric and wear of the adhesive nozzle 30 can be prevented, and the application state of the adhesive is also maintained uniformly.

Referring to FIG. 7, an adhesive A is applied to an overlapping portion of a fabric R formed by winding in a circular shape, and then closely adhered to the adhesive A. Thus, an adhesive pressurizing process constituting an excellent pressure resistant hose will be described.

The pressure roller 40 according to the present invention, the pressure upper roller 41 and the pressure lower roller 42 which is installed on the rotary shaft orthogonal to the state while maintaining a clearance coinciding with the surface of the hose forming rod 20. ).

The pressure lower roller 42 is rotatably installed in the roller insertion groove 25 formed at the rear of the hose forming rod 20, which is a fabric (R) that is guided while wrapping the hose forming rod 20. It is to support the inner surface of the sag without sagging, and also the upper pressure roller 42 is to support the overlapping portion of the fabric surrounding the hose forming rod 20 elastically from above.

At this time, grooves 41a and 42a are formed on the outer circumferential surfaces of the pressurized upper roller 41 and the pressurized lower roller 42 to prevent adhesion of the adhesive A leaked from the overlapping fabric. The groove 41a of the pressure upper roller 41 is formed at a position extending from the overlapping portion of the fabric R to the outer end, and the groove 42a of the pressure lower roller 42 overlaps the fabric R. It forms in the position which connects with an inner edge part in a part. If such grooves 41a and 42a are formed, even if a part of the adhesive is not solidified, it will not adhere to the surface of the upper press roller 41 and the press lower roller 42, thereby preventing damage to the fabric R. It can be prevented.

On the other hand, it is also possible to provide at least one guide roller (not shown) in front and rear of the pressure roller 40 composed of the pressure upper roller 41 and the pressure lower roller 42. This is to extend the state in which the adhesive (A) is injected from the adhesive nozzle 30 by the pressure roller 40 for a certain time to induce a solidified solid state.

As described above, in the roller insertion groove 25 installed at the rear of the hose forming rod 20 and accommodating the pressure lower roller 42, the adhesive A sprayed from the adhesive nozzle 30 is further applied to the pressure roller. When the adhesive is pressed and diffused by the 40, the adhesive A, which escapes from the overlapping portion of the fabric R, is rapidly cooled and solidified, thereby effectively suppressing the phenomenon that the adhesive A diffuses from the overlapping portion of the fabric R. The cold air injection pipe 26 and the cold air discharge pipe 27 are laid so that they can be installed.

In the cold air injection pipe 26 and the cold air discharge pipe 27, the fabric R adheres to the first, second, and third molding blocks 21, 22, 23, and the hose forming rod 20. Piping to form an independent flow path separate from the air injection pipe and the discharge pipe introduced in the prior art to prevent scratches. The cold air discharge pipe 27 is installed in plurality in the inner space of the roller insertion groove 25 in which the pressurized lower roller 42 is installed, while the cold air injection pipe 26 does not interfere when the fabric R is molded. Select a location and install it. The cold air injection pipe 26 is connected to an external cooling device to supply cold air at a lower temperature than normal temperature.

Behind the roller insertion groove 25 of the hose forming rod 20, grooves 28 are also formed to induce the discharge of cold air and the continuous solidification of the adhesive. The cold air injected from the cold air discharge pipe 27 solidifies the adhesive A of the overlapping portion along the periphery of the pressurized lower roller 42 and is discharged along the outer circumferential surface of the hose forming rod 20. Therefore, it is necessary to form a groove 28 to the rear of the hose forming rod 20 to induce the discharge of cold air.

The groove 28 of the hose forming rod 20 is preferably formed in line with the groove 42a of the pressure lower roller 42 as shown. In this way, since the groove 28 coincides with the overlapping portion of the fabric R, the solidification of the adhesive A is continuously progressed by the discharged cold air.

Then, the rear end of the pair of pressure rollers 40, the adhesive pressure guider 29 is provided to effectively suppress the lifting phenomenon of the bonded fabric overlap. Since the adhesive pressing guide 29 is to stably press the overlapping fabric applied to the adhesive is to prevent the lifting of the overlapping portion during the transfer, it is possible to closely adhere to the adhesive site.

According to the present invention configured as described above, first, the roll 11 on which the fabric is wound is installed on the molding support 10, and the front end of the fabric is pulled and passed on the introduction plate 15. Next, when the power is supplied to the motor (M) of the feed roller 12, the plate-shaped fabric (R) is transferred while passing through the first, second, third forming blocks (21) (22) and (23) in sequence Is molded into. After the adhesive (A) is applied to the overlapping portion of the fabric (R) in the adhesive nozzle (30), and the pressing member 40 while pressing the overlapping portion of the completed tubular member from the rear end of the hose forming rod 20 is continuous Is discharged.

In this invention, when the cold air is injected into the end of the pipe member constituting the sealed hose is discharged, the solidification time of the adhesive is significantly shortened to prevent leakage of the adhesive and at the same time solidified in a uniformly distributed state of the adhesive Bonding force to maintain internal pressure is maintained evenly.

In another aspect of the present invention, a method of continuously forming a plate-shaped fabric wound on a roll while passing through a transfer step, a molding step, and a joining step into a tubular member having a circular cross section is proposed.

In the transfer step, the plate-shaped fabric is to proceed in one direction. The conveying speed of the fabric can be adjusted according to the material and specification of the fabric put into the process.

In the forming step, the radius of curvature of the conveyed fabric is gradually reduced so that the overlapping portion is formed at one end while being circularized. The curvature reduction of the fabric is carried out gradually in the direction of minimizing the transfer resistance, which is preferably set as a manufacturing standard through experiments using fabrics of various materials and specifications.

In the bonding step, the adhesive is applied onto the overlapped portion of the fabric to be conveyed, and at the same time, the overlapped portion is compressed to complete the pipe member. The spraying amount of the adhesive and the compressive force on the overlapping portion may be adjusted according to the type of adhesive, the feeding speed of the fabric, and the specification of the fabric. In this case, it is desirable to perform proper temperature control for the joint in order to induce a fast and stable solidification state of the adhesive.

As described above, in the present invention, the adhesive applied to the overlapped portion flows outwardly of the bonding end in the process of continuously forming a plate-shaped fabric by applying an adhesive to the joint surface and pressing it tightly to manufacture a hose continuously. Since it is cured out and suppresses the peeling phenomenon of the inner end to improve the reliability of the quality as well as increase the endurance life provides a useful effect such as realizing high value-added.

The present invention is not limited to the embodiments described above, it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention.

Claims (9)

In an apparatus for continuously forming a plate-shaped fabric wound on a roll into a tube member of circular cross section: A fabric spreading and conveying means mounted on one side of the upper surface of the base to guide the fabric on the roll to stably progress in the longitudinal direction of the base; An introduction plate installed at a rear end of the transfer means and having a molding groove to be bent when the fabric passes; A molding support provided in the longitudinal direction on the base and continuously processing a U-shaped groove on an upper surface thereof; A plurality of forming means mounted on a forming support to gradually form the overlapped fabric by passing the fabric passing through the introduction plate; A hose forming rod installed to be supported by the forming means to form a predetermined gap with the U-groove and the forming means of the forming support; A nozzle installed at a rear adjacent portion of the forming means to apply an adhesive to the overlapping portion of the fabric; And a pair of pressurizing means connected to the inside and the outside of the hose forming rod so as to press the adhesive applied to the overlapping portion through the nozzle. The method of claim 1, Forming apparatus of the pressure-resistant hose, characterized in that the introduction plate to guide the processing to bend the supplied fabric is a donut-type pressing member for processing to bend inward by pressing the fabric from the top. The method of claim 1, The forming means may be formed by bending an end of an angled first forming block supporting one end of the hose forming rod and one end of a processing fabric which is installed and disposed to cover a portion of the hose forming rod exposed to the upper surface of the forming support. And forming a second forming block and a third forming block for guiding the remaining ends of the processing fabric to be conveyed by covering the entire portion of the hose forming rod exposed to the upper surface of the forming support. . The method of claim 1, The hose forming rod, forming apparatus of the pressure-resistant hose, characterized in that it has an incision surface on the upper side away from the forming means so that the overlapping portion of the fabric passing through the forming means does not come into close contact. The method of claim 1, The pressurizing means is formed on the rear end of the hose forming rod paired with the pressurizing upper roller installed on the rotating shaft orthogonal to the state while maintaining a clearance coinciding with the surface of the hose forming rod. Molding apparatus of the pressure-resistant hose, characterized in that consisting of a pressurized lower roller is inserted into the roller insertion groove. The method according to claim 1 or 5, Molding apparatus of the pressure-resistant hose, characterized in that grooves are formed on the outer circumferential surface of the pressurized upper roller and the pressurized lower roller to be spaced apart from each other to prevent adhesion of the leaked adhesive. The method of claim 5, Placing a cold air injection pipe and a cold air discharge pipe in a portion adjacent to the pressure lower roller rotatably installed in the roller insertion groove on the rear end cut surface of the hose forming rod so as to rapidly solidify the adhesive sprayed from the adhesive nozzle. Pressure hose hose forming apparatus characterized in that. The method according to claim 1 or 7, In the rear of the roller insert groove of the hose forming rod, a groove is formed to induce discharge of cold air and continuous solidification of the adhesive, which is formed on the same straight line as the groove of the pressure lower roller. Device. The method according to claim 1 or 5, An apparatus of forming a pressure resistant hose, characterized in that an adhesive pressing guider is placed at the rear end of the pair of pressure rollers so as to suppress lifting of the overlapped fabric overlapping portion.