JP2006150878A - Core material pitch variable device of fiber reinforced cord, manufacturing apparatus of fiber reinforced rubber hose, trapezoidal fiber reinforced cord and fiber reinforced rubber hose - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a core material pitch variable device of a fiber reinforced cord improved so as to be capable of varying the core material pitch in the fiber reinforced cord in a state made as uniform as possible in a direction arranging in a row. <P>SOLUTION: The core material pitch variable device of the fiber reinforced cord comprises the inlet part 6 arranged just behind a forming device C of the wide belt-like fiber reinforced cord 5 wherein a plurality of core materials 3 are coated with a rubber 4, a pitch variable roll R wherein a forward ridge spiral 1 and a reverse ridge spiral 2 are formed to the outer peripheral surface of the roll in adjacent relationship, a taking-around mechanism 8 for winding and sliding the fiber reinforced cord 5 around the variable roll R to feed it to an outlet part 7 and a winding angle altering means 9 for freely altering and regulating the winding angle of the fiber reinforced cord 5 around the pitch variable roll R and is equipped with a control means 10 for altering the winding angle so as to allow the same to follow the feed distance of the fiber reinforced cord 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, a flat fiber reinforced cord formed by coating a plurality of core members arranged in parallel with rubber is spirally wound around the outer peripheral surface of a cylindrical rubber having a tapered portion, and the outer periphery of the cylindrical rubber is TECHNICAL FIELD The present invention relates to a fiber reinforced rubber hose for forming a fiber reinforced layer and a manufacturing apparatus thereof, a trapezoidal fiber reinforced cord generated in the process of making a fiber reinforced rubber hose, and a core material pitch variable device for a fiber reinforced cord for creating a trapezoidal fiber reinforced cord. It is.

  The above-mentioned fiber reinforced cord is a wide belt shape in which a plurality of core members are arranged in a row, that is, in a parallel state and covered with rubber, and this is wound around a cylindrical rubber having a tapered portion. A fiber-reinforced rubber hose is formed by vulcanization. This fiber-reinforced rubber hose is used as, for example, a pumping tube of a squeeze pump. The pumping tube is required to have flexibility and strength that can withstand frequent deformation, and higher pressure resistance is required on the discharge side.

  In other words, it is necessary to gradually change the core material pitch in the pumping tube so that the core pitch is wide on the suction side with a large diameter and the core pitch is narrow on the discharge side with a small diameter, The fiber reinforced rubber hose used for this is required to have its core material pitch gradually changed. Further, some fiber-reinforced rubber hoses used for other applications have a core material pitch that is inversely proportional to the size of the diameter.

  Conventionally, as an apparatus for changing the core pitch of this type of fiber reinforced cord, a fiber reinforced rubber hose produced using the same, and an apparatus for manufacturing the same, those disclosed in Patent Document 1 are known. The core pitch in a fiber reinforced cord with a flat cross-sectional shape is obtained by joining each of a plurality of cores arranged in a row after rubber coating, and then merging and changing the width of the guide for joining the cores And a technique for changing the full width. Also disclosed is a technique of creating a fiber reinforced rubber hose by controlling the width dimension to a predetermined value by the guide and then winding the flat belt-like fiber reinforced cord around the outer periphery of the cylindrical rubber.

However, the technique disclosed in Patent Document 1, that is, the technique of changing the core material pitch by changing the guide width has a problem that the core material pitch tends to be non-uniform. In other words, since the entire width of a plurality of rubber-coated cords arranged in parallel is a means for narrowing the entire width by using guides that act only on the left and right ends, the pitch of adjacent cores is good at the left and right ends. This is because the pitch of the adjacent core members is not reduced so much in the left and right central portions where the influence of the guide is difficult to be reduced, but it is easily predicted that the core material pitch varies in the width direction as a result.
JP 2004-106223 A

  The object of the present invention is to improve the core pitch of the fiber reinforced cord so that the pitch between the adjacent cores in the fiber reinforced cord can be varied in the parallel direction as uniform as possible in view of the above situation. It is an object of the present invention to provide a variable device, a trapezoidal fiber reinforced cord produced thereby, a fiber reinforced rubber hose produced using the trapezoidal fiber reinforced cord, and an apparatus for producing the same.

The invention according to claim 1 is a fiber reinforced cord core material pitch varying device in a state where a wide belt-like fiber reinforced cord 5 formed by coating a plurality of core materials 3 arranged in parallel with rubber 4 is heated. A pitch variable tool R in which a right-handed thread-like forward projecting spiral 1 and a left-handed threaded reverse projecting spiral 2 are formed adjacent to each other on the outer peripheral surface of the sliding contact member r; A handling mechanism 8 for winding the fiber reinforcing cord 5 taken in from the inlet portion 6 around the pitch varying tool R and sliding it relative to the outlet portion 7, and the pitch varying tool of the fiber reinforcing cord 5 A winding angle changing means 9 capable of changing and adjusting the winding angle to R, and
Control means 10 for controlling the handling mechanism 8 and the winding angle changing means 9 is provided so as to change the winding angle depending on the transport distance of the fiber reinforced cord 5. It is a feature.

  According to a second aspect of the present invention, in the fiber reinforced cord core material pitch varying device according to the first aspect, the pitch varying tool R has a right male screw shape on the outer peripheral surface of the roll member which is the sliding member r. It is a pitch variable roll in which the normal protrusion spiral 1 and the left male screw-shaped reverse protrusion spiral 2 are formed adjacent to each other.

  According to a third aspect of the present invention, there is provided the fiber reinforced cord core material pitch variable device according to the second aspect, wherein the pitch variable roll R has a pitch of the normal protrusion spiral 1 and the reverse protrusion spiral 2 of the roll member. It is characterized by having a pitch variable structure that becomes larger toward the outside in the width direction.

  The invention according to claim 4 is characterized in that, in the fiber-reinforced cord core material pitch variable device according to claim 2 or 3, the pitch variable roll R is configured to be rotatable. .

The invention according to claim 5 is the fiber reinforced cord core material pitch variable device according to any one of claims 2 to 4, wherein the winding angle changing means 9 is:
A guide roller 11 is disposed on at least one of the upper side and the lower side in the conveying direction of the fiber reinforced cord 5 with respect to the pitch variable roll R, and the fiber reinforced cord 5 includes the pitch variable roll R and the guide roller 11. The guide roller 11 or the pitch variable in a direction in which the angular position of the guide roller 11 with respect to the axis X of the pitch variable roll R is relatively changed. It is characterized by being provided with a moving mechanism E that can move the roll R freely.

  The invention according to claim 6 is the fiber reinforced cord core material pitch variable device according to claim 5, wherein the pitch variable roll R has the pitches of the forward and reverse protruding spirals 1, 2, 31, and 32 are mutually different. The different first and second variable rolls R1, R2 are in a state where the first variable roll R1 having a large pitch is positioned on the upper side in the conveying direction of the fiber reinforced cord 5 with respect to the second variable roll R2 having a small pitch. The wrapping angle changing means 9 is configured to be capable of individually changing and adjusting the wrapping angles to the variable rolls R1 and R2.

The invention according to claim 7 is the fiber reinforcement cord core material pitch variable device according to claim 6, wherein the first guide roller 11a is arranged on the upper side in the conveying direction of the fiber reinforcement cord 5 with respect to the first variable roll R1. The second guide roller 11b is disposed on the lower side in the conveying direction of the fiber reinforced cord with respect to the second variable roll R2.
The moving mechanism E is configured to move the first guide roller 11a or the first variable roll R1 in a direction in which an angular position of the first guide roller 11a with respect to the axis X1 of the first variable roll R1 is changed. The second guide roller 11b or the second variable roll R2 is movable in a direction in which the angular position of the first moving mechanism E1 and the second guide roller 11b with respect to the axis X2 of the second variable roll is changed. And a moving mechanism E2.

  According to an eighth aspect of the present invention, in the fiber reinforced cord core material pitch variable device according to the seventh aspect, the routing mechanism 8 includes the first variable roll R1 and the second variable roll. It is configured in a state of being struck over the roll R2.

  The invention according to claim 9 is the fiber reinforced cord core material pitch variable device according to any one of claims 1 to 8, wherein the inlet portion 6 includes a plurality of core materials 3 arranged in parallel as rubber 4. It is characterized in that it is arranged in the vicinity of the fiber reinforcement cord carry-out port 20 in the rubber coating apparatus C for producing a wide belt-like fiber reinforcement cord 5 by covering with

  The invention according to claim 10 is the fiber reinforced rubber hose manufacturing apparatus according to any one of claims 1 to 9, wherein the rotating mechanism 15 capable of driving and rotating the cylindrical rubber 14 having the tapered portion 13 is used. The fiber reinforcing cord 5 is arranged in the vicinity of the outlet portion 7 of the cord core pitch variable device A, and the fiber reinforcing cord 5 carried out from the outlet portion 7 is spirally wound around the outer peripheral surface of the cylindrical rubber 14 to reinforce the fiber. The rubber hose 16 is configured to be freely created.

  The invention according to claim 11 is the invention according to any one of claims 1 to 9, wherein the wide belt-like fiber reinforced cord 5 formed by coating the plurality of core members 3 arranged in parallel with the rubber 4 is heated. The trapezoidal fiber reinforced cord 5T is obtained by passing the fiber reinforced cord core material pitch varying device A described in (1).

  According to a twelfth aspect of the present invention, the trapezoidal fiber reinforced cord 5T according to the eleventh aspect is spirally wound around the outer peripheral surface of the cylindrical rubber 14 having the taper portion 13, thereby being wound around the outer periphery of the cylindrical rubber 14. A fiber reinforced rubber hose in which the fiber reinforced layer 17 is formed is obtained.

  According to a thirteenth aspect of the present invention, in the fiber reinforced rubber hose according to the twelfth aspect, the narrow side of the trapezoidal fiber reinforced cord 5T is the small diameter side of the cylindrical rubber 14 so as to be used as the pumping tube 19 of the squeeze pump 18. The wide side is wound around the large-diameter side of the tubular rubber.

  According to the first aspect of the present invention, there is provided means for changing the core material pitch by sliding the wide surface of the fiber reinforced cord on the pitch variable tool, and the forward and reverse protrusions formed on the core material pitch variable tool. Since the spiral acts on the entire width of the fiber reinforced cord, a force for reducing or expanding the core material pitch over the entire width of the fiber reinforced cord is applied from the protruding spiral. Accordingly, a force for changing the arrangement pitch (core material pitch) is applied to any of the plurality of core materials of the fiber reinforced cord, and the core material pitch is evenly or substantially uniformly distributed over the entire width of the fiber reinforced cord. It becomes possible to change the width. This is clearly superior to the guide means (the aforementioned Patent Document 1) that applies a force to narrow the width only at both ends of the fiber reinforced cord.

  And by changing the sliding length between the pitch variable tool and the fiber reinforced cord by the wrapping angle changing means, the rate of change (reduction ratio, enlargement ratio) of the core material pitch of the fiber reinforced cord can be changed, and the control means If the wrapping angle is changed depending on the transport distance of the fiber reinforced cord, etc., the core material pitch can be gradually changed (gradually increased or gradually decreased) with respect to the length of the fiber reinforced cord. As a result, it is possible to create a fiber reinforced cord of a desired shape, such as a trapezoidal fiber reinforced cord that exhibits a trapezoidal shape in a plan view that is suitable for winding into a fiber reinforced rubber hose by winding it around a cylindrical rubber having a tapered portion. become. As a result, it is possible to provide an improved fiber reinforced cord core material pitch varying device so that the pitch between adjacent core materials in the fiber reinforced cord can be varied in a parallel direction as much as possible.

  In this case, if the pitch variable tool is a pitch variable roll as in claim 2, the sliding portion with the fiber reinforced cord has an arc shape, and the protrusion spiral and the fiber reinforced cord slide more smoothly. There is an advantage that the variable operation of the core material pitch is stabilized. Further, in order to expand and contract the plurality of core material pitches as a whole centering on the left and right center, the amount of movement increases toward the outer left and right of the plurality of core materials. If it is formed so that the pitch of the ridge spiral increases toward the outer side in the left-right direction with respect to the conveying direction of the fiber reinforcement cord, the width direction biasing force suitable for the amount of movement of the core material depending on the left-right position is applied to the fiber reinforcement cord. It is possible to provide the function and effect of the invention of claim 1 or 2 more smoothly.

  According to the invention of claim 4, the pitch variable roll is configured to be rotatable, that is, to be rotatable in the forward direction and the reverse direction, and will be described in detail in the embodiment. In particular, if the sliding length with the fiber reinforced cord, that is, reduction, the winding angle can be changed and adjusted. That is, the function of the winding angle changing means can be exhibited by driving and rotating the pitch variable roll, and the core is subordinate to the transport distance of the fiber reinforced cord without providing another winding angle changing means. It is possible to supplement the control of changing the material pitch and the function of the winding angle changing means, and the core material of the fiber reinforced cord in which the effect according to the invention of claim 2 or 3 can be obtained rationally and economically A pitch variable device can be provided.

  According to the fifth aspect of the present invention, there is provided a moving mechanism for moving the pitch variable roll or the guide roller disposed adjacent to the pitch variable roll to relatively change the angular position of the guide roller with respect to the axis of the pitch variable roll. The wrapping angle changing means is used, and the fiber reinforced cord is applied over the pitch variable roll and the guide roller, so that the overall configuration can be made compact, but the wrapping angle of the pitch variable roll can be adjusted. It is possible to provide a fiber reinforcing cord core material pitch varying device capable of increasing the change range and creating a fiber reinforcing cord having a large core material pitch change rate.

  And, as in the invention of claim 6, the pitch variable roll is arranged on the lower side in the conveying direction of the first variable roll having a large ridge spiral pitch and the second variable roll having a small ridge spiral pitch. If it is composed of a roll and the winding angle of both variable rolls can be individually changed and adjusted, the core pitch of the fiber reinforced cord can be changed stepwise (smoothly) without difficulty, or the first variable roll In this case, it is possible to set various change behaviors such as making a large change and fine-adjusting the second variable roll, and there is an advantage that the apparatus is easy to use. As a specific configuration in this case, as in the invention of claim 7, two variable rolls are arranged next to each other, and guide rollers are arranged on the front and rear sides (upper side and lower side in the conveyance direction), respectively. It can be set as the structure which provides a 1st and 2nd moving mechanism with components. Furthermore, if the fiber reinforced cord 5 is applied to the first variable roll and the second variable roll as in the invention of claim 8, a change in the winding angle of the fiber reinforced cord with respect to both the variable rolls can be saved while saving space. There is an advantage that the range can be taken large.

  According to the invention of claim 9, the inlet portion of the fiber-reinforced cord core material pitch variable device is disposed in the vicinity of the fiber-reinforced cord carry-out port of the rubber-coated device in which the coated rubber is processed in a high temperature state. The fiber reinforced cord remains at a high temperature, and if it is reduced, it will be taken in from the inlet in a state that it will flow easily, and the core part pitch can be changed smoothly by compressing or expanding the rubber part in the left-right direction. Will come to be. As a result, an economical and rational fiber reinforced cord core that can obtain a high temperature state of the coated rubber, which is advantageous for changing the core material pitch, without the need for a dedicated heating means by arranging the apparatus. A material pitch variable device can be provided.

  According to the invention of claim 10, in order to obtain a fiber reinforced rubber hose by spirally winding a fiber reinforced cord whose core material pitch is changed to a desired state around a cylindrical rubber having a tapered portion. Since the winding device is arranged near the outlet of the pitch variable device, the fiber reinforced cord that is still in a high temperature state is wound around the cylindrical rubber, and economically without providing a dedicated heating means. The integration of both can be promoted, and the entire apparatus can be made compact.

  According to the invention of claim 11, the trapezoidal fiber reinforced cord necessary for manufacturing the fiber reinforced rubber hose having the tapered portion is obtained by supplying the fiber reinforced cord having a certain width to the core pitch changing device of the fiber reinforced cord. It will be convenient to create. And like invention of Claim 12, a trapezoidal fiber reinforcement cord is spirally wound around the outer peripheral surface of the cylindrical rubber which has a taper part, and the fiber reinforced rubber hose which has a fiber reinforcement layer on the outer periphery can be manufactured. The fiber reinforced rubber hose is advantageous in that it can be suitably used as a pumping tube of a squeeze-type pump.

  DESCRIPTION OF EMBODIMENTS Embodiments of a fiber-reinforced cord core variable pitch device, a fiber-reinforced rubber hose manufacturing device, a trapezoidal fiber-reinforced cord, and a fiber-reinforced rubber hose according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of the whole manufacturing apparatus, FIG. 2 is a plan view of a main part of the core material pitch variable device, FIG. 3 is an operation diagram showing the principle of the winding angle changing means, FIGS. It is a figure regarding a fiber reinforced rubber hose. FIG. 10 shows a squeeze pump, and FIGS. 11 to 15 show various other embodiments.

[Example 1]
The fiber-reinforced rubber hose manufacturing device Z according to the first embodiment is a device for manufacturing the fiber-reinforced rubber hose 16 used as the pumping tube 19 of the squeeze pump 11 shown in FIG. In order to make it easier to understand the functions required of the fiber-reinforced rubber hose 16, the squeeze pump 11 will be briefly described first.

  As shown in FIG. 10, the squeeze pump 11 includes a pumping tube 19 that is partially bent along the inner periphery of the drum 37, and a roller 36 that is pivotally supported at both ends. And a rotor 38 that rotates in the direction of arrow E. A hopper 39 is provided at the proximal end of the suction side end 19a of the pumping tube 19, and a discharge side end 19b of the pumping tube 19 is provided. The transport tubes 40 are connected to each other.

  The pumping tube 19 made of the fiber reinforced rubber hose 16 is tapered over the entire length so that the diameter on the suction side is large and the diameter on the discharge side is small, and is fitted to the pumping tube suction side end 19a. When the rotor 38 is driven and rotated in the direction indicated by the arrow E while the ready-mixed concrete transported from the mixer truck or the like is accommodated in the combined hopper 39, the roller 36 presses the pumping tube 19 and compresses the cross-sectional area thereof. As the tube is rotated upward, the tube pressing portion is moved in the circumferential direction, and the pressure is increased while increasing the pressure of the ready-mixed concrete in the tube by gradually reducing the cross-sectional area of the taper portion 13 of the fiber reinforced rubber hose 16, and discharged from the discharge side end portion 19b. To come. Therefore, the pumping tube 19 is required to have flexibility and strength that can withstand frequent deformation, and higher pressure resistance is required on the discharge side.

  Next, an apparatus for manufacturing a fiber reinforced rubber hose will be described. The fiber-reinforced rubber hose 16 used as the pumping tube 19 of the squeeze pump is produced by the following manufacturing apparatus Z. That is, the fiber-reinforced rubber hose manufacturing apparatus Z is generally configured to include a rubber coating apparatus C, a fiber-reinforced cord core material pitch varying apparatus A, and a winding apparatus B as shown in FIG. Among these, the rubber coating device C and the winding device B, which are publicly known devices, will be briefly described, and the core material pitch varying device A, which is a main part of the invention, will be described in detail.

  The rubber coating apparatus C passes a plurality of steel cords (an example of a core material) 3 arranged in parallel through the rubber coating apparatus C, and the plurality of steel cords 3 are covered with the rubber 4, and the cross-sectional shape is flat. A flat belt-like (see FIG. 3 etc.) fiber reinforced cord 5 is formed and discharged. That is, a plurality of core members 3 arranged in parallel are covered with rubber 4 to create a wide belt-like fiber reinforced cord 5 with rubber coating device C, and the created fiber reinforced cord 5 is a fiber reinforced cord carry-out port. 20 is discharged toward the core material pitch varying device A. Incidentally, the rubber coating apparatus C composed of an extruder, etc., not shown is attached to a known technique, and further detailed explanation is omitted. As the core material 3, various materials such as steel cordno, high strength synthetic resin fiber, carbon fiber and the like can be used.

  The core material pitch varying device A is a flat and constant width fiber reinforced cord 5 fed from the rubber coating device C, and the arrangement pitch P of the steel cord 3 is increased or decreased in proportion to the feeding length (conveyance distance). It is an apparatus for forming a trapezoidal fiber reinforced cord 5T that is substantially trapezoidal in a plan view in which the entire width is variable by being gradually changed. The trapezoidal fiber reinforced cord 5T is an intermediate product for winding the tubular rubber hose 14 to form the fiber reinforced rubber hose 10 for the above-described pumping tube. In the present manufacturing apparatus A, it is immediately wound around the cylindrical rubber hose 14, but the trapezoidal fiber reinforced cord 5T is temporarily stored and then transported to a winding apparatus B in a remote place or other factory. It is also possible to use the system.

  Now, the core material pitch varying device A has an inlet portion 6 into which the fiber reinforcing cord 5 immediately after being discharged from the rubber coating device C can be taken, and a cylindrical roll member (an example of a sliding contact member) on the outer peripheral surface. First and second pitch variable rolls R1 and R2 in which a male thread-like regular projecting spiral 1 and a left male thread-like reverse projecting spiral 2 are formed adjacent to each other, and fibers taken in from the inlet 6 A winding mechanism 8 that winds the reinforcing cord 5 around the variable pitch roll R, slides it relative to the outlet portion 7, and winds the fiber reinforcing cord 5 around the pitch variable roll R to change and adjust the winding angle. The angle changing means 9 and a control device (an example of control means) 10 are provided.

  The pitch variable roll R is composed of first and second variable rolls R1 and R2, and the first and second variable rolls R1 and R2 are respectively rotatable to the left and right frame plates 21 and 21 around the shaft centers X1 and X2. The first guide roller 11a is on the upper side in the conveying direction of the fiber reinforced cord 5 with respect to the first variable roll R1, and the lower side in the conveying direction of the fiber reinforced cord 5 with respect to the second variable roll R2. The second guide rollers 11b are supported by the left and right frame plates 21 and 21, respectively, so as to be rotatable. Each of the guide rollers 11a and 11b is formed in a substantially pulley shape having a large diameter portion 23 formed on the left and right ends of the guide portion 22 and having an axis P.

  As shown in FIGS. 1 and 2, the first guide roller 11 a is moved up and down so that the rotation shaft 26 can be moved up and down along a long hole 12 a formed vertically in the left and right frame plates 21 and 21. The moving mechanism 27 is configured to be movable up and down and to be maintained. Thereby, the 1st moving mechanism E1 which can move the 1st guide roller 11a in the direction in which the angular position with respect to the axial center X1 of the 1st variable roll R1 of the 1st guide roller 11a is changed is comprised.

  As shown in FIG. 3A, when the first guide roller 11a is positioned at the upper end of the long hole 12a (position indicated by the solid line), the winding angle of the fiber reinforced cord 5 in the first variable roll R1 Is θU, and when the first guide roller 11a is located at the lower end of the long hole 12a (position indicated by the phantom line), the winding angle of the fiber reinforced cord 5 in the first variable roll R1 is θS ( θU> θS). Therefore, the winding angle θ1 of the fiber reinforced cord 5 around the first variable roll R1 is adjusted and set in the range of θU ≧ θ ≧ θS by the up and down movement of the first guide roller 11a by the operation of the first moving mechanism E1. Can do.

  As shown in FIG. 1, the second guide roller 11 b has a front-rear moving mechanism 29 that allows the rotation shaft 28 to move back and forth and maintain along a long hole 12 b that is formed in the left and right frame plates 21, 21. Therefore, it can be moved back and forth and maintained. Thereby, the 2nd moving mechanism E2 which can move the 2nd guide roller 11b in the direction in which the angular position with respect to the axial center X2 of the 2nd variable roll of the 2nd guide roller 11b is changed is comprised.

  The handling mechanism 8 includes first and second guide rollers 11a and 11b, first and second variable rolls R1 and R2, and left and right frame plates 21 and 21 that support them. Further, on the rear side of the second guide roller 11b, a third guide roller 30 for determining the height position of the trapezoidal fiber reinforcing cord 5 provided from the core material pitch varying device A is rotatably supported on the frame plates 21 and 21. Has been. The fiber reinforcement cord 5 is routed between the three guide rollers 11a, 11b, 30 and the two adjacent adjacent ones of the two variable rolls R1, R2. 11b and 30 and the variable rolls R1 and R2 have sufficient winding angles.

  The winding angle changing means 9 arranges guide rollers 11a and 11b on the upper side and the lower side in the conveying direction of the fiber reinforcement cord 5 with respect to the first and second variable rolls R1 and R2, and the fiber reinforcement cord 5 The variable rolls R1 and R2 and the guide rollers 11a and 11b are wound so as to be wound around each other, and the angular positions of the guide rollers 11a and 11b with respect to the axial centers X1 and X2 of the variable rolls R1 and R2 are relative to each other. It is configured by providing moving mechanisms E1 and E2 that can move the guide rollers 11a and 11b in the direction to be changed.

  As shown in FIG. 3B, when the second guide roller 11b is located at the front end of the long hole 12b (position indicated by the solid line), the winding angle of the fiber reinforcement cord 5 in the second variable roll R2 Is θM, and the winding angle of the fiber reinforced cord 5 in the second variable roll R2 is θA when the second guide roller 11b is located at the rear end of the long hole 12b (position indicated by the phantom line). (ΘM> θA). Therefore, the winding angle θ2 around the second variable roll R2 of the fiber reinforced cord 5 is adjusted and set in the range of θM ≧ θ ≧ θA by the back-and-forth movement of the second guide roller 11b by the operation of the second moving mechanism E2. Can do.

  As shown in FIGS. 1 and 2, the first variable roll R <b> 1 includes a right male screw-like normal protrusion spiral 1 and a left male screw-like reverse protrusion spiral 2 on the outer peripheral surface of a cylindrical roll member r. Are formed adjacent to each other at the left and right center M, and have a support shaft 24 having an axis X1, and are rotatably supported by the left and right frame plates 21 and 21. A first rotation mechanism K1 is provided that acts on the support shaft 24 to rotate the first variable roll R1 in the forward and reverse directions, that is, in the direction of arrow A or arrow B.

  As shown in FIGS. 1 and 2, the second variable roll R <b> 2 has a right male screw-like normal protrusion spiral 31 and a left male screw-like reverse protrusion spiral 32 on the outer peripheral surface of the cylindrical roll member r. Are formed adjacent to each other at the left and right center M, and have a support shaft 25 having an axial center X2, and are rotatably supported by the left and right frame plates 21 and 21. The screw pitch of these forward and reverse protruding spirals 31 and 32 is set to be smaller than that of the first variable roll R1. A second rotation mechanism K2 is provided that acts on the support shaft 25 to rotate the second variable roll R2 in the forward and reverse directions, that is, in the directions indicated by arrows C and D. That is, the pitch variable roll R includes the first and second variable rolls R1 and R2 having different pitches of the forward and reverse protruding spirals 1, 2 and 31, 32, and the first variable roll R1 having a larger pitch has the pitch. The wrapping angle changing means 9 is configured so as to be positioned on the upper side in the conveying direction of the fiber reinforced cord 5 with respect to the second variable roll R2 which is small. It is configured to be freely adjustable.

  As shown in FIGS. 1 and 4, the winding device B includes a rotating shaft 15a on which a cylindrical rubber 14 having a tapered portion 13 can be attached, and a rotating mechanism 15 that can drive and rotate the rotating shaft 15a. And is arranged at a position immediately after the outlet 7 of the core material pitch varying device A. Although not shown in the drawing, the attitude of the winding device B with respect to the outlet 7 to wind the trapezoidal fiber reinforcing cord 5 coming out of the core material pitch varying device A around the cylindrical rubber 14 in a reciprocating spiral shape (sudder shape) ( There is also a posture changing mechanism that changes the orientation. That is, by driving the rotation mechanism 15, the cylindrical rubber 14 externally fitted to the rotation shaft 15 a is rotated in a predetermined direction, and the trapezoidal fiber reinforcement cord 5 can be wound around the outer peripheral portion.

  For these reasons, in the fiber reinforced rubber hose manufacturing apparatus Z, the inlet portion 6 is located in the vicinity of the fiber reinforced cord carry-out port 20 of the rubber coating device C, and the outlet portion 7 is located in the vicinity of the winding device B. Thus, the core material pitch varying device A, the rubber coating device C, and the winding device B are arranged, and the flat belt-like fiber reinforcement cord 5 carried out from the rubber coating device C is used as the core material pitch. By forming the trapezoidal fiber reinforced cord 5T (or the inverted trapezoidal fiber reinforced cord 5T ′) in the variable device A and then spirally winding the outer periphery of the cylindrical rubber hose 14 driven and rotated in the winding device B, A fiber reinforced rubber hose 16 in which a fiber reinforcing layer 17 is formed on the outer periphery of the rubber 14 can be produced.

  As shown in FIG. 1, the first and second moving mechanisms E1, E2, the first and second rotating mechanisms K1, K2, the rubber coating device C, and the rotating mechanism 15 are all connected to the control device 10. , Operation control linked to each other, that is, the winding angles θ1 and θ2 of the reinforcing cord 5 are changed depending on the conveyance distance of the fiber reinforcing cord 5 at the first and second variable rolls R1 and R2 Thus, the handling mechanism 8 and the wrapping angle changing means 9 can be controlled by the control device 10. The hot (high temperature) fiber reinforced rubber cord 5 coming out of the rubber coating apparatus C is slid on the outer peripheral surfaces of the first and second variable rolls R1 and R2 in the hot state, so that the fiber reinforced rubber cord 5 The width of the core material pitch P and the total width W can be gradually increased or decreased.

  Through such control, the core material pitch P sent from the rubber coating device C and the fiber reinforcement cord 5 having a constant total width are sent from the core material pitch varying device A to the core material pitch P as shown in FIG. The trapezoidal fiber reinforced cord 5T whose entire width gradually changes in the longitudinal direction can be formed. In FIG. 4, the relationship P1> P2 is formed between the core material pitch P1 of the wide portion and the core material pitch P2 of the narrow portion, and the core material pitch P of the fiber reinforced cord 5 is changed to the first variable. The roll R1 is 10%, the second variable roll R2 is 4%, and so on, and can be reduced in stages using the two variable rolls R1 and R2.

  As an example, the trapezoidal fiber reinforced cord 5T suitable for making the fiber reinforced rubber hose 10 is controlled as follows. That is, in the state in which the fiber reinforced cord 5 is conveyed at the speed V, the first variable roll R1 is driven to rotate in the direction indicated by the arrow B, and the core pitch is applied to the fiber reinforced cord 5 that slides below the first variable roll R1. In addition, a state in which the effect of reducing the entire width W is given. The second variable roll R2 has a state in which the core pitch P and the entire width are reduced on the fiber reinforced cord 5 that slides on the upper part of the second variable roll R2 by driving and rotating in the direction of the arrow C. To do.

  As described above, the first and second moving mechanisms E1 and E2 are operated in a state where the first and second peripheral speeds v1 and v2 are constant, and the first guide is proportional to the transport length of the fiber reinforced cord 5. The roller 11a is moved upward from the lower end to the upper end of the upper and lower long holes 12a [see FIG. 3 (A)], and the second guide roller 11b is moved to the front and rear long holes 12b in proportion to the transport length of the fiber reinforced cord 5. Move forward from the rear end toward the front end. Then, in any of the first and second variable rolls R1, R2, the winding angle of the fiber reinforcement cord 5 is gradually increased in proportion to the transport length of the fiber reinforcement cord 5, and as a result, the core material pitch P and The reduction ratio of the entire width W is gradually increased in proportion to the conveyance length of the fiber reinforcement cord 5, and the trapezoidal fiber reinforcement cord 5T shown in FIG. 4 is created.

  Then, the trapezoidal fiber reinforcement cord 5T delivered from the outlet portion 7 is spirally wound from the large diameter side of the cylindrical rubber hose 14 driven and rotated by the rotation mechanism 15, so that the core material pitch is increased on the large diameter side. A trapezoidal fiber reinforced cord 5T is formed on the outer peripheral surface of the fiber reinforced rubber hose 16 having the taper portion 13 and the fiber reinforced rubber hose 16 in which the core material pitch P and the total width W become smaller as the P and the entire width W increase. A fiber reinforced rubber hose 16 (see FIG. 9) that is wound spirally and has a fiber reinforcing layer 17 formed on the outer periphery of the cylindrical rubber 14 can be created.

  Further, in order to create the suede-like fiber reinforcement layer 17 by winding the trapezoidal fiber reinforcement cord 5T in a reverse spiral shape, the fiber-reinforced rubber hose in a state where the trapezoidal fiber reinforcement cord 5T is wound once in the forward direction. 16 (see FIG. 9), the trapezoidal fiber reinforcement cord 5T fed from the outlet portion 7 of the core material pitch varying device A is again placed on the large-diameter side by the above-described control. 7 to create a fiber reinforced rubber hose 16 shown in FIG. This means that the trapezoidal fiber reinforced cord 5T delivered from the outlet portion 7 is once cut at the small diameter side end (rear end).

  Alternatively, the following method may be used. That is, in the state where the first and second variable rolls R1 and R2 are rotated under the same conditions as described above, the first guide roller 11a located at the upper end of the upper and lower elongated holes 12a is moved downward toward the lower end, The second guide roller 11b located at the front end of the hole 12b is moved backward toward the rear end to gradually reduce the winding angle of the fiber reinforcing cord 5 in the first and second variable rolls R1, R2, The inverted trapezoidal fiber reinforcement cord 5T ′ (see FIG. 4), in which the core pitch P and the total width W of the fiber reinforcement cord 5 are gradually increased in proportion to the transport length, is continued from the trapezoid fiber reinforcement cord 5T previously created. And is sent out from the exit section 7.

  In the winding device B, when the trapezoidal fiber reinforcement cord 5T is wound to the end on the small diameter side, the posture (direction) is changed to the opposite direction (see the winding device B using the virtual line in FIG. 1). This time, the inverted trapezoidal fiber reinforced cord 5T ′ is spirally wound from the small diameter side of the fiber reinforced rubber hose 16 in the state shown in FIG. 7 from the small diameter side, resulting in the fiber reinforced rubber hose shown in FIG. 16 is created. In this case, it is possible to create the slender fiber reinforcing layer 17 without cutting the fiber reinforcing cord at the boundary between the trapezoidal fiber reinforcing cord 5T and the inverted trapezoidal fiber reinforcing cord 5T '.

  In addition, as a means for recognizing the conveyance length of the fiber reinforced cord 5 in the control device 10, the speed sent from the rubber coating device C, that is, the conveyance speed in the core material pitch varying device A is predetermined and stored, Alternatively, a system may be provided in which a sensor (not shown) for detecting the rotation speed of the first guide roller 11a or the third guide roller 30 is provided, and the conveyance length is obtained from the conveyance speed at any time. Absent.

  In each of the variable rolls R1 and R2, the forward and reverse ridge spirals 1, 2, 31, and 32 are formed adjacent to each other at M with respect to the left and right centers. According to this, if the left and right centers of the fiber reinforced cords 5 are conveyed in accordance with M, just the right and left lateral shifting forces act on each half of the lateral width W (W / 2). Cancel each other and the center position of the left and right is maintained, that is, without using the guide means for guiding the conveying direction of the fiber reinforced cord 5, the core material pitch P and the full width W can be expanded or reduced.

  On the other hand, for example, in the means for changing the core material pitch by using the variable roll in which only the regular protrusion spiral 1 is formed on the entire surface, the force acts only on one side of the fiber reinforced cord 5 in the left-right direction. A side guide that restricts the fiber reinforcing cord 5 from moving laterally in that direction is required. In addition, since frictional resistance is generated by sliding with the side guides, there is a disadvantage that the conveyance of the fiber reinforced cord 5 is easily disturbed or the power must be increased to compensate for the conveyance driving force loss.

  Therefore, according to the variable pitch roll R according to the first embodiment, an excellent structure can be realized in which the conveyance state is neatly maintained and the power loss does not occur while the side guide as a dedicated member is unnecessary. Further, since the fiber reinforcement cord 5 is wound around the first and second variable rolls R1 and R2, the variable action of the core material pitch P acts on both the front and back (or top and bottom) surfaces of the fiber reinforcement cord 5. Therefore, there is an advantage that the core pitch P and the total width W can be varied in a balanced manner and more stably than when acting only on one surface.

[Example 2]
In order to create the trapezoidal fiber reinforcing cord 5T and the inverted trapezoidal fiber reinforcing cord 5T ′ using the core material pitch varying device A, the following method may be used. Here, the relationship between the conveyance speed V of the fiber reinforcement cord 5 and the core material pitch P and the full width M of the fiber reinforcement cord 5 according to the relationship between the rotation speed and the rotation direction of the pitch variable roll R will be described. As shown in FIG. 1, the fiber reinforced cord 5 has a structure in which the handling mechanism 8 slides at the lower part of the first variable roll R1 and slides at the upper part of the second variable roll R2. At the same time, the forward and reverse protruding spirals 1, 2, 31, 32 of the first and second variable rolls R1, R2 are located in the center M toward the lower side in the transport direction of the fiber reinforced cord 5 in plan view (see FIG. 2). It is the structure formed in the state by.

  Thus, when the first variable roll R1 is driven and rotated in the direction of the arrow B in a state where the first circumferential speed v1 is faster than the transport speed V (v1> V), the fiber reinforced cord 5 is the core. If the material pitch P and the entire width W are reduced, and the first circumferential speed v1 is constant within the range, the material pitch P is reduced at a reduction ratio determined by the speed ratio (v1: V), and the core material pitch P is reduced. In addition, a fiber reinforced cord having a constant overall width W and a rectangular shape in plan view is created. On the other hand, if the first circumferential speed v1 is controlled so as to increase in proportion to the transport distance (length) of the fiber reinforcement cord 5, the winding angle of the fiber reinforcement cord 5 around the first variable roll R1 Is substantially increased, and the core material pitch P and the entire width W of the fiber reinforced cord 5 after the sliding are gradually reduced, and the above-mentioned “trapezoidal fiber reinforced cord 5T” can be created.

  Such a function is also exhibited in the second variable roll R2 around which the fiber reinforced cord 5 is wound. That is, if the second variable roll R2 is driven and rotated in the direction of the arrow C, the core material pitch P and the full width W of the fiber reinforced cord 5 are reduced, and in the state of being driven and rotated in the direction of the arrow D, the fiber reinforced cord P and the full width are reduced. W will be expanded.

  That is, by controlling the rotation speed and direction of the first and second variable rolls R1 and R2, the core pitch P and the full width W of the fiber reinforced cord 5 can be reduced and expanded, and the rate of change thereof can be controlled in any way. It is possible to set, and the function of the winding angle changing means 9 can be exhibited without changing the position of the guide rollers 11a and 11b. Of course, the above-described function can be obtained even in a configuration in which only the first variable roll R1 or only the second variable roll R2 is provided.

  As an example, in order to create the trapezoidal fiber reinforced cord 5T suitable for making the fiber reinforced rubber hose 16, the first variable roll R1 is moved in the direction indicated by the arrow B in the state where the fiber reinforced cord 5 is conveyed at the speed V. While rotating and rotating the peripheral speed v1 within a range faster than the transport speed V (V <v1), the second variable roll R2 is in the direction of the arrow C, and the second peripheral speed v2 is slower than the transport speed V. The drive is rotated while adjusting within the range (0 ≦ v2 <V). Then, in proportion to the transport length of the fiber reinforced cord 5, the first circumferential speed v1 is gradually increased and the second circumferential speed v2 is gradually decreased. As a result, the trapezoidal fiber reinforcement cord 5T with the core material pitch P and the entire width being narrowed toward the upper side in the conveyance direction of the fiber reinforcement cord 5 is sent out from the outlet portion 7. It is. Moreover, it is also possible to create an inverted trapezoidal fiber reinforced cord 5T 'by controlling in the reverse direction.

[Other Examples]
As shown in FIG. 11, the pitch variable tool R may be configured to have a pitch variable structure in which the pitch of the normal protrusion spiral 1 and the reverse protrusion spiral 2 is increased toward the outside in the width direction of the roll member r. . Further, as shown in FIG. 12, the right and left central portions are arranged on the outer periphery of the hourglass-shaped roll member r whose diameter is smaller than both ends, and the normal protruding spiral 1 and the left male threaded reverse protruding spiral 2 are centered in the horizontal direction. The variable roll R formed adjacent to each other in FIG. Furthermore, as shown in FIG. 13, it is also possible to use a side-view fan-shaped pitch variable tool R having an undulating arcuate surface e that slides within a predetermined angle range with the fiber reinforced cord 5. Naturally, forward and reverse protruding spirals 1 and 2 are formed on the arc surface.

  As shown in FIG. 14 (A), the handling mechanism 8 has a configuration in which the fiber reinforcing cord 5 is passed through the upper part of the first variable roll R1 and passed through the lower part of the second variable roll R2, that is, It is possible to adopt a configuration opposite to that shown in FIG. Further, as shown in FIG. 14 (B), a routing mechanism 8 for routing the fiber reinforcement cord 5 by a method other than tapping is also possible. Further, as the wrapping angle changing means 9, as shown in FIG. 15, the guide roller 11 can be freely rotated and maintained around the axis X of the pitch variable roll R by using a swing arm 35 or the like. It is also possible to adopt a configuration that pivots on

  The fiber reinforcement cord 5 created by the rubber coating apparatus C is temporarily stored, and then the fiber reinforcement cord 5 is heated by an appropriate heating means immediately before being supplied to the inlet portion 6 of the core material pitch varying apparatus A. A means of achieving a high temperature state is possible. Further, it is possible to temporarily store the trapezoidal fiber reinforcement cord 5T (or the inverted trapezoidal fiber reinforcement cord 5T ′) formed by the core material pitch varying device A and then supply it to the winding device B after that. . It is advantageous to implement these means when at least one of the rubber coating device C, the core material pitch varying device A, and the winding device B is in another process (another factory, another company, etc.). .

  The fiber reinforced rubber hose 16 according to the present invention can be used for various applications such as a fresh concrete pouring docking hose and a fresh concrete pouring tip hose in addition to the above-described pumping tube 19.

Overall view showing a schematic configuration of a fiber-reinforced rubber hose manufacturing apparatus (Example 1) The top view which shows the principal part of a core material pitch variable apparatus (A) and (B) are both operation diagrams showing the principle of the wrap angle changing means. Top view showing trapezoidal fiber reinforced cord (A) is an arrow a view of FIG. 4, (B) is an arrow b view of FIG. Action diagram showing winding state of trapezoidal fiber reinforced cord around cylindrical rubber hose The top view which shows the fiber reinforced rubber hose in the state where the trapezoidal fiber reinforcement cord is wound only in one direction of the outer circumference of the cylindrical rubber Cross section of the fiber reinforced cord immediately after being sent out from the rubber coating device Plan view of manufactured fiber reinforced rubber hose Side view showing schematic structure of squeeze pump The top view which shows the 1st another structure of a pitch variable roll The top view which shows the 2nd another structure of a pitch variable roll Side view showing third alternative structure of pitch variable roll (A), (B) Schematic showing another structure of the handling mechanism Schematic showing another structure of winding angle changing means

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,31 Normal protrusion spiral 2,32 Reverse protrusion spiral 3 Core material 4 Rubber 5 Fiber reinforcement cord 5T Trapezoid fiber reinforcement cord 6 Inlet part 7 Outlet part 8 Handling mechanism 9 Winding angle change means 10 Control means 11 Guide Roller 11a First guide roller 11b Second guide roller 13 Tapered portion 14 Cylindrical rubber 15 Rotating mechanism 16 Fiber reinforced rubber hose 17 Fiber reinforced layer 18 Squeeze pump 19 Pumping tube 20 Fiber reinforced cord carry-out port r Sliding member, roll member A Fiber reinforcing cord core material pitch variable device B Winding device C Rubber coating device E Moving mechanism E1 First moving mechanism E2 Second moving mechanism Z Fiber reinforced rubber hose manufacturing device R Pitch variable tool, pitch variable roll R1 first variable roll R2 Second variable roll X Pitch variable roll axis X1 First variable roll axis X2 First The axis of the variable roll

Claims (13)

A wide belt-like fiber reinforced cord formed by covering a plurality of cores arranged in parallel with rubber can be taken in while heated, and a right male screw-like straight protrusion on the outer peripheral surface of the sliding contact member A pitch variable tool in which a spiral and a left male screw-shaped reverse protrusion spiral are formed next to each other, and a fiber reinforced cord taken in from the inlet portion is wound around the pitch variable tool and relatively slid to the outlet portion. And a handling mechanism that conveys to the pitch variable winding angle changing means that can freely change and adjust the winding angle of the fiber reinforced cord around the pitch variable tool,
A core material of a fiber reinforced cord provided with control means for controlling the routing mechanism and the wrapping angle changing means so as to change the winding angle depending on the transport distance of the fiber reinforced cord. Pitch variable device.   The pitch variable tool is a pitch variable roll in which a right male screw-like normal protrusion spiral and a left male screw-shaped reverse protrusion spiral are formed adjacent to each other on an outer peripheral surface of a roll member that is a sliding contact member. Item 2. A fiber pitch varying device for fiber reinforced cords according to Item 1.   The core of a fiber reinforced cord according to claim 2, wherein the pitch variable roll is configured to have a pitch variable structure in which the pitch of the normal protruding spiral and the reverse protruding spiral increases toward the outside in the width direction of the roll member. Material pitch variable device.   4. The core material pitch variable device for fiber reinforced cords according to claim 2, wherein the pitch variable roll is configured to be freely rotatable. The winding angle changing means is:
A guide roller is disposed on at least one of the upper side and the lower side in the conveying direction of the fiber reinforced cord with respect to the pitch variable roll, and the fiber reinforced cord is in a state of being slid over the pitch variable roll and the guide roller. Provided is a moving mechanism capable of moving the guide roller or the pitch variable roll in a direction in which the angular position of the guide roller relative to the axis of the pitch variable roll is relatively changed while being wound around. The core material pitch variable apparatus of the fiber reinforced cord according to any one of claims 2 to 4, wherein the core material pitch is varied.   The pitch variable roll is a fiber reinforced cord for the first and second variable rolls having different pitches of the forward and reverse protruding spirals, and the first variable roll having the larger pitch is the second variable roll having the smaller pitch. The winding angle changing means is configured to be capable of individually changing and adjusting the winding angle to each of these variable rolls. The core material pitch variable apparatus of the fiber reinforced cord of description. A first guide roller is arranged on the upper side in the conveying direction of the fiber reinforced cord with respect to the first variable roll, and a second guide roller is arranged on the lower side in the conveying direction of the fiber reinforced cord with respect to the second variable roll;
The moving mechanism includes: a first moving mechanism that can move the first guide roller or the first variable roll in a direction in which an angular position of the first guide roller with respect to an axis of the first variable roll is changed; And a second moving mechanism that can move the second guide roller or the second variable roll in a direction in which the angular position of the second guide roller with respect to the axis of the second variable roll is changed. The core material pitch variable device of the fiber reinforced cord according to claim 6.   The core of the fiber reinforced cord according to claim 7, wherein the handling mechanism is configured in a state in which the fiber reinforced cord is struck over the first variable roll and the second variable roll. Material pitch variable device.   The said entrance part is arrange | positioned in the vicinity of the fiber reinforcement cord carrying-out port in the rubber coating apparatus which coat | covers the core material arranged in parallel with rubber | gum, and produces the fiber reinforcement cord of a wide belt shape. The core material pitch variable device of the fiber reinforced cord according to any one of the above.   A rotating mechanism capable of driving and rotating a cylindrical rubber having a tapered portion is disposed in the vicinity of the outlet portion of the core pitch varying device for fiber reinforced cords according to any one of claims 1 to 9, An apparatus for manufacturing a fiber reinforced rubber hose in which a fiber reinforced rubber hose is configured to be freely formed by spirally winding a fiber reinforced cord carried out from an outlet portion around the outer peripheral surface of the cylindrical rubber.   The fiber reinforcing cord core fiber pitch according to any one of claims 1 to 9, wherein a wide belt-like fiber reinforcing cord formed by covering a plurality of core members arranged in parallel with rubber is heated. Trapezoidal fiber reinforced cord obtained by passing through the device.   A fiber-reinforced rubber hose comprising a fiber-reinforced layer formed on the outer periphery of the cylindrical rubber by winding the trapezoidal fiber-reinforced cord according to claim 11 around the outer peripheral surface of the cylindrical rubber having a tapered portion. In order to be used as a pumping tube of a squeeze pump, the narrow side of the trapezoidal fiber reinforced cord is wound around the small diameter side of the cylindrical rubber, and the large side is wound around the large diameter side of the cylindrical rubber. The fiber-reinforced rubber hose according to claim 12.

Images