JP2019089262A - Mandrel pull-out device - Google Patents

Abstract

To provide a mandrel pull-out device which is advantageous in achieving miniaturization.SOLUTION: When a pull-out fluid cylinder 32 is in an intermediate state between a reduced state and an extended state, a pair of belt conveyance mechanisms 24 is set to a sandwiching position, and a mandrel 12 is held by a belt 44 through a plurality of pressure contact rollers 50 of the pair of belt conveyance mechanisms 24, and a pulley drive motor 52 is rotated to convey the belt 44 of the pair of belt conveyance mechanisms 24, and thereafter, the mandrel 12 is pulled out from a hose contact part 20 by traveling of the pair of belts 44. The mandrel 12 drawn by the pair of belts 44 is delivered to a downstream side conveyance unit 18 via a second mandrel receiving guide roller 28 and a guide plate 64 as shown in FIG. 13, and is smoothly transported by the downstream side conveyance unit 18.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a mandrel withdrawing device for withdrawing a mandrel from a hose.

The manufacturing process of the hose includes a lamination process in which a hose material consisting of an inner cover material, a reinforcing material and an outer cover material is sequentially laminated at a location excluding both ends of the mandrel, and a vulcanization process in which the hose material laminated on the mandrel is vulcanized. And a mandrel drawing step of drawing the mandrel from the vulcanized hose.
In the drawing step, a hose contact portion having a through hole which allows axial insertion of only the mandrel is used.
Then, in the drawing process, the mandrel end is clamped by the clamp and the clamp is made immovable, and the hose abutment is brought into contact with the end of the hose so that the end of the mandrel comes through the through hole of the hose abutment. By moving the hose abutment along the axial direction of the mandrel in a direction away from the clamp, in other words by keeping the mandrel stationary and moving the hose over the mandrel, from the hose to the mandrel I try to pull out the

JP 2004-130645 A

In the above-described conventional device, the movement of the hose contact portion is performed by the chain mechanism.
Therefore, when the hose length is increased to 30 m and 40 m, the chain mechanism also becomes longer and the device becomes larger, and the proportion of the mandrel extraction device in the production line of the hose increases, and some improvement is required .
The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a mandrel drawing device which is advantageous in achieving miniaturization.

In order to achieve the above-mentioned object, the invention according to claim 1 is a mandrel drawing device for drawing a mandrel from a hose, which enables axial movement of a mandrel inserted into the hose and abuts on the end of the hose. A withdrawal fluid cylinder having a contactable hose abutment and a piston rod parallel to the mandrel toward the hose abutment; a mandrel attached to the tip of the piston rod and projecting from the hose abutment A clamping portion for clamping an end portion, a clamping position for clamping the mandrel from both sides of the mandrel pulled out from the hose contact portion by the clamp portion by expansion and contraction of the drawing fluid cylinder, and a clamping release for releasing the clamping Movable from the position, and driven from the holding position from the hose abutment portion Characterized in that it comprises a pair of belt conveyance mechanism to pull catching Ndoreru.
The invention according to claim 2 is characterized in that the pair of belt transport mechanisms are disposed on both sides of the mandrel in the horizontal direction.
According to a third aspect of the present invention, the drawing fluid cylinder has a cylinder body in which the piston rod protrudes and retracts, and is attached to a tip of the piston rod and reciprocates linearly over the cylinder body by the protrusion and retraction of the piston rod. A moving table is provided, and the pair of belt conveyance mechanisms are provided on the moving table.
The invention according to claim 4 raises the mandrel in a state where the mandrel is pulled out from the hose contact portion by the clamp portion at a position near the hose contact portion between the hose contact portion and the cylinder body. It is characterized in that a first mandrel receiving and guiding roller is provided which supports the portion of the mandrel near the hose contact portion from below and prevents the mandrel from hanging down.
The invention according to claim 5 is characterized in that a roller group for guiding a mandrel in a direction away from the hose contact portion is provided at a location of a drawing fluid cylinder opposite to the hose contact portion, and a part of the roller group Are disposed above the portion of the cylinder body opposite to the piston rod.
According to a sixth aspect of the present invention, the end portion of the mandrel, which is hung down by its own weight, is guided onto the roller at a position near the hose contact portion of the roller located closest to the hose contact portion among the roller group. It is characterized in that a guide plate is provided.
The invention according to claim 7 is characterized in that the pair of belt transport mechanisms are arranged on both sides of the mandrel in the vertical direction.
The invention according to claim 8 is characterized in that the pair of belt conveyance mechanisms are provided at a position opposite to the hose contact portion with the drawn fluid cylinder interposed therebetween.

According to the first aspect of the present invention, the length of the mandrel drawing device does not increase corresponding to the length of the hose, which is advantageous in shortening the length of the mandrel drawing device.
Therefore, the proportion of the mandrel drawing device in the hose production line can be significantly reduced, which is extremely advantageous in effectively utilizing the space at the production site.
According to the second aspect of the present invention, arranging the pair of belt transport mechanisms on both sides of the mandrel in the horizontal direction is advantageous in compacting the height of the mandrel extracting device.
According to the third aspect of the present invention, it is possible to set the length of the mandrel drawing device to the length of the drawing fluid cylinder in the extended state.
According to the fourth aspect of the present invention, it is advantageous in facilitating the operation of drawing the mandrel by the mandrel drawing device.
According to the fifth and sixth aspects of the present invention, it is advantageous to smoothly deliver the mandrel drawn by the mandrel drawing device to the downstream side transport section disposed downstream of the mandrel drawing device.
According to the seventh aspect of the present invention, arranging the pair of belt transport mechanisms on both sides of the mandrel in the vertical direction is advantageous in compacting the width of the mandrel drawing device.
According to the eighth aspect of the present invention, the length of the mandrel drawing device is a length obtained by adding the length of the pair of belt conveying mechanisms to the length of the drawing fluid cylinder in the stretched state, and the length of the hose There is no corresponding increase, which is advantageous in shortening the length of the mandrel extractor.
Therefore, the proportion of the mandrel drawing device in the hose production line can be significantly reduced, which is extremely advantageous in effectively utilizing the space at the production site.
Further, since the drawn fluid cylinder and the pair of belt conveyance mechanisms are separated, it is advantageous for efficiently performing maintenance of the pair of belt conveyance mechanisms.

It is a front view of a mandrel extraction device concerning a 1st embodiment, and shows a state where an end of a mandrel is clamped by a clamp part in an extended state of an extraction fluid cylinder. It is a front view of a pair of belt conveyance mechanism of a mandrel extraction device concerning a 1st embodiment. It is a top view of a pair of belt conveyance mechanisms of a mandrel extraction device concerning a 1st embodiment. It is a top view of a substrate part of a move stand of a pair of belt conveyance mechanisms. It is a side view in the state where a pair of belt conveyance mechanisms were located in a pinching release position. It is a side view in the state where a pair of belt conveyance mechanisms were located in a pinching position. It is a front view of the mandrel extracting device concerning a 1st embodiment, and shows a contraction state of a drawing fluid cylinder. It is explanatory drawing of a motion of the edge part of the mandrel at the time of making a clamp part into a clamp release state from a clamp state in the shrinking | reduction state of drawing | extracting fluid cylinder. FIG. 14 is an explanatory view in which the first mandrel receiving guide roller is raised from the retracted position to the raised position before the clamp portion is changed from the clamp state to the clamp release state in the contraction state of the drawing fluid cylinder. It is explanatory drawing which makes a clamp part a clamp release state, and makes a shrinkage | contraction state of extraction | drawer fluid cylinder transfer to an expansion | extension state. It is explanatory drawing which makes a 1st mandrel receiving guide roller descend | fall from a raise position to a retracted position, and makes a shrinkage | contraction state of a drawing fluid cylinder transfer to an expansion | extension state. It is explanatory drawing which pulls out a mandrel from a hose with a pair of belt conveyance mechanism in the state of the shrinking | contraction state of drawing | extracting fluid cylinder, and expansion | extension state. It is explanatory drawing in which a mandrel is pulled out from a hose by a pair of belt conveyance mechanism. It is a front view of a mandrel extracting device concerning a 2nd embodiment, and shows a state where an end of a mandrel is clamped by a clamp part in an extended state of a drawing fluid cylinder. It is the figure which looked at a pair of belt conveyance mechanism of the mandrel extracting device which concerns on 2nd Embodiment from the axial center direction of a driving pulley and a driven pulley. It is the figure which looked at the substrate part of the transfer stand of a pair of belt conveyance mechanisms from the axial center direction of a driving pulley and a follower pulley. It is an arrow A view of FIG. It is the figure which looked at a pair of belt conveyance mechanism of the mandrel drawing-out apparatus which concerns on the modification of 2nd Embodiment from the axial center direction of a driving pulley and a driven pulley. It is the figure which looked at the substrate part of the transfer stand of a pair of belt conveyance mechanisms from the axial center direction of a driving pulley and a follower pulley. It is a front view of a mandrel extracting device concerning a 3rd embodiment, and shows a state where an end of a mandrel is clamped by a clamp part in an extended state of a drawing fluid cylinder. It is a figure which shows the state which the 1st shrinking | reduction operation | movement of a drawing fluid cylinder complete | finished. It is a figure which shows the state which the 2nd shrinking | reduction operation | movement of a drawing fluid cylinder complete | finished. It is a figure which shows the state which the 3rd shrinking | reduction operation | movement of a drawing fluid cylinder complete | finished.

Hereinafter, preferred embodiments of a mandrel extraction device according to the present invention will be described with reference to the attached drawings.
First Embodiment
First, the first embodiment will be described with reference to FIGS. 1 to 13.
As shown in FIG. 1, the mandrel extracting device 10 </ b> A is to pull the mandrel 12 out of the hose 14 after attaching and vulcanizing a hose material to the mandrel 12.
In the present embodiment, the mandrel extracting device 10A is installed on the production line of the hose 14.
The production line is provided with an upstream conveying portion 16 and a downstream conveying portion 18 consisting of a group of rollers supporting the mandrel 12 through which the mandrel 12 is inserted and vulcanized, and the mandrel extracting device 10A includes the upstream conveying portion 16 and the downstream The hose contact unit 20 is disposed between the side conveyance unit 18 and the downstream side conveyance unit 18 and is provided at the downstream end of the upstream side conveyance unit 16.
The mandrel 12 is formed with an outer diameter equal to the inner diameter of the hose 14 and is loaded with hose material over the entire length of the mandrel 12, but before the process of drawing the mandrel 12 by the mandrel drawing device 10A, one end of the mandrel 12 The portion of the hose material close to portion 1202 is cut away to expose the end 1202 of the mandrel.
The mandrel drawing-out device 10A according to the first embodiment includes a hose contact portion 20, a mandrel moving portion 22, a pair of belt conveying mechanisms 24, a first mandrel receiving guide roller 26, and a second mandrel receiving guide roller And 28 (FIG. 2).

The hose contact portion 20 includes a contact plate 2002 and upper and lower hose contact withdrawal fluid cylinders 2004A and 2004B.
The upper and lower hose contact drawing fluid cylinders 2004A and 2004B are air cylinders in the present embodiment and supported by a bracket 2008 provided on a base 2006.
The contact plate 2002 is composed of two divided members 2002A and 2002B.
The two divided members 2002A, 2002B are detachably attached to the tips of the piston rods 2010A, 2010B of the upper and lower hose abutting drawn fluid cylinders 2004A, 2004B.
The two divided members 2002A, 2002B are formed with semicircular concave portions corresponding to the outer diameter of the mandrel 12, and the tip end surfaces of the upper and lower hose abutting drawing fluid cylinders 2004A, 2004B are extended by the extension operation. The abutment brings the semicircular recesses into alignment, thereby forming a through hole 2012 which prevents axial movement of the hose 14 and allows axial movement of only the mandrel 12.
The axial center of the through hole 2012 coincides with the axial center of the mandrel 12 in the hose 14 supported by the upstream side conveyance unit 16.
In the present embodiment, when the contact plate 2002 is thus constituted by the plurality of divided members 2002A and 2002B and the hose 14 having different dimensions is produced in the production line, the hose contact portion 20 can be easily changed. The versatility of the mandrel extraction device 10A is enhanced.
In addition, various structures conventionally known can be adopted as the shape of the two divided members 2002A, 2002B that prevent the axial movement of the hose 14 and allow the axial movement of only the mandrel 12 It is.

The mandrel moving unit 22 is configured to include a clamp unit 30, a drawing fluid cylinder 32, and a moving base 34.
The drawing fluid cylinder 32 includes a cylinder body 3202 supported on the floor via a base 36, and a piston rod 3204 that protrudes and retracts from the cylinder body 3202, and the piston rod 3204 is on the hose contact portion 20 side. It is arranged towards.
The axial center of the drawing fluid cylinder 32 is horizontally directed and is parallel to the axial center of the through hole 2012 formed by the two divided members 2002A and 2002B, in other words, a mandrel inserted into the through hole 2012 Parallel to 12
In the present embodiment, the drawing fluid cylinder 32 is a hydraulic cylinder.

The moving table 34 is attached to the tip of the piston rod 3204.
As shown in FIG. 1, the movable table 34 includes a substrate portion 3402, a connection plate portion 3404, and a pair of leg portions 3406.
The base portion 3402 has a rectangular plate shape having a width extending in the horizontal direction and in a direction perpendicular to the axial direction of the drawing fluid cylinder 32, and a length extending in the axial direction of the drawing fluid cylinder 32 in the horizontal direction. It is
The base portion 3402 has a front portion 3402 A located on the hose contact portion 20 side and a rear portion 3402 B located on the side away from the hose contact portion 20.
The connection plate portion 3404 is attached to the central portion in the width direction of the lower surface of the front portion 3402A of the substrate portion 3402, and is provided so as to project downward from the lower surface of the substrate portion 3402.
The distal end of the piston rod 3204 is attached to the lower portion of the connection plate portion 3404 via the connection member 33, and the moving table 34 is moved in a direction away from and approaching the hose contact portion 20 by the extension operation of the drawn fluid cylinder 32. Reciprocated linear movement.
In the present embodiment, the state in which the drawn fluid cylinder 32 is most extended is referred to as the extended state, and the most reduced state is referred to as the reduced state. Therefore, the movable base 34 is at the front end position closest to the hose contact portion 20 in the extended state of the drawn fluid cylinder 32, and the rear end where the movable base 34 is most distant from the hose contact portion 20 in the contracted state of the drawn fluid cylinder 32. It becomes a position.
The pair of leg portions 3406 is attached to both sides in the width direction of the upper surface of the front portion 3402A of the substrate portion 3402, and is provided so as to project upward from the upper surface of the substrate portion 3402.

The clamp unit 30 is a place that clamps the end 1202 of the mandrel 12, and is provided between the pair of legs 3406.
The clamp unit 30 includes a lower clamp member 3002, an upper clamp member 3004, and a clamping fluid cylinder 3006.
The lower clamp member 3002 extends in the horizontal direction and in a direction perpendicular to the axial center direction of the drawing fluid cylinder 32, and both ends in the extension direction of the lower clamp member 3002 are attached to the pair of legs 3406, respectively. There is. Note that the lower clamp member 3002 may be attached at both ends in the extending direction to the pair of leg portions 3406 so as to be adjustable in the vertical direction.
At the center of the lower clamp member 3002 in the extending direction, an open V-shaped holding groove 3002A is formed upward.

The clamp fluid cylinder 3006 is a hydraulic cylinder in the present embodiment, and is disposed with its axis directed vertically.
The clamping fluid cylinder 3006 includes a cylinder body 3008 supported between the upper portions of the pair of legs 3406, and a piston rod 3010 which protrudes and retracts from the cylinder body 3008, and the piston rod 3010 is directed downward. It is done.
The upper clamp member 3004 is detachably attached to the lower end of the piston rod 3010, and extends horizontally and in a direction perpendicular to the axial direction of the withdrawal fluid cylinder 32.
At the center of the upper clamp member 3004 in the extending direction, an open V-shaped holding groove 3004A is formed downward.
Therefore, in the clamping state of the clamping unit 30, the piston rod 3010 extends relative to the cylinder body 3008, and the mandrel 12 is held by the holding grooves 3002A and 3004A between the lower clamp member 3002 and the upper clamp member 3004. Clamp.
Further, in the clamp release state of the clamp portion 30, the piston rod 3010 is inserted into the cylinder body 3008, and the holding groove 3004A of the upper clamp member 3004 is upward from the mandrel 12 placed on the holding groove 3002A of the lower clamp member 3002. Separate and unclamp the mandrel 12.

The pair of belt transport mechanisms 24 are provided on the base portion 3402 of the movable table 34 and disposed on both sides of the mandrel 12 pulled out of the hose 14 by the clamp portion 30.
The pair of belt transport mechanisms 24 enable the clamping and releasing of the portion of the mandrel 12 pulled out of the hose 14 by the clamp portion 30, and the portion of the mandrel 12 is a hose contact portion 20 in a state of clamping the mandrel 12 portion. To move away from the
As shown in FIGS. 2 to 6, each of the pair of belt conveyance mechanisms 24 includes a movable plate 38, a fluid cylinder 40 for a movable plate, a guide 42 for a movable plate, a belt 44, a drive pulley 46, a driven pulley 48, and a pressure roller. 50, and a pulley drive motor 52.

As shown in FIGS. 3, 5 and 6, the movable plates 38 of the pair of belt transport mechanisms 24 are disposed on both sides of the mandrel 12 pulled out of the hose 14 by the clamp unit 30 in plan view. The plate 38 extends from a position near the front portion 3402 A of the substrate portion 3402 to the rear of the rear end of the substrate portion 3402.
The movable plate 38 has a front portion 38A located on the hose contact portion 20 side and a rear portion 38B located on the side away from the hose contact portion 20.
As shown in FIG. 2, the movable plate 38 is provided with an upper plate 3802 disposed above the movable plate 38 and opposed to the movable plate 38, and as shown in FIGS. 2 and 3, the upper plate 3802 is movable A leg 3804 erected from a position closer to the rear portion 38B of the plate 38, and a plurality of support posts 3806 erected from a position spaced apart in the extending direction at an intermediate portion in the extending direction of the movable plate 38. And is supported by. The upper and lower ends of the plurality of support columns 3806 are fastened to the upper plate 3802 and the movable plate 38 via bolts 3808.

The movable plate fluid cylinder 40 is an air cylinder in the present embodiment and is provided corresponding to each movable plate 38, and the cylinder body 4002 is attached to the side portion of the upper surface of the substrate portion 3402 The tip is connected to the corresponding movable plate 38.
As shown in FIG. 6, in the extended state of the movable plate fluid cylinder 40 of each movable plate 38, the pair of belt transport mechanisms 24 are in a clamping position for clamping the mandrel 12 by the belt 44, as shown in FIG. In the contracted state of the movable plate fluid cylinder 40, the pair of belt transport mechanisms 24 are in the pinching release position where the belt 44 is separated from the mandrel 12.
As shown in FIGS. 4, 5 and 6, the movable plate guide 42 has the pair of movable plates 38 in the horizontal direction with respect to the central axis of the mandrel 12 pulled out from the hose 14 by the clamp unit 30. It guides to move in the direction orthogonal to the longitudinal direction of the.
The movable plate guides 42 are configured to include rails 4202 provided respectively on the front and back of the upper surface of the substrate portion 3402 and guides 4204 attached to the lower surfaces of the movable plates 38 and slidably coupled to the rails 4202. There is.
Furthermore, as shown in FIG. 4, when the pinion 54 is rotatably provided on the upper surface of the substrate portion 3402 about the axis and the rack 56 engaged with the pinion 54 is provided on the lower surface of the movable plate 38, The movable plate 38 is configured to move horizontally in a direction orthogonal to the longitudinal direction of the mandrel 12 while maintaining an equal distance with respect to the central axis of the mandrel 12 pulled out of the hose 14 by the clamp unit 30. It is done. That is, the pinion 54 and the rack 56 move the pair of belt transport mechanisms 24 in the direction orthogonal to the longitudinal direction of the mandrel 12 while maintaining an equal distance with respect to the central axis of the mandrel 12 pulled out of the hose 14 The distance maintaining mechanism 58 is configured.

The drive pulley 46 is provided at a position near the rear portion 38B at the center in the width direction of each movable plate 38, and the driven pulley 48 is provided in the front portion 38A at the center in the width direction of each movable plate 38.
The driving pulley 46 is integrally rotatably coupled to a vertically extending pivot 4602, and the driven pulley 48 is rotatably supported by the vertically extending pivot 4802. The lower portions of the pivots 4602 and 4802 are It is rotatably supported by the movable plate 38, and the upper portions of the support shafts 4602 and 4802 are rotatably supported by the upper plate 3802.

As shown in FIGS. 2 and 3, the belt 44 is wound around the drive pulley 46 and the driven pulley 48.
The belt 44 is formed of a material having a large coefficient of friction with respect to the steel mandrel 12, and various conventionally known materials such as rubber can be used as such a material, and the surface of the belt 44 is lined, etc. It is optional.
The belt 44 is provided such that the mandrel 12 pulled out of the hose contact portion 20 is positioned at the center of the width of the belt 44.
A plurality of pressure rollers 50 are provided at intervals in the longitudinal direction of the belt 44 on the inner surface of the pair of belt conveyance mechanisms 24 where the belts 44 face each other.
The pressing roller 50 is rotatably supported by a support shaft 5002 extending in the vertical direction, and both ends of the support shaft 5002 are supported by the movable plate 38 and the upper plate 3802.
The portion of the belt 44 where the plurality of pressure rollers 50 are disposed is horizontal in the direction orthogonal to the longitudinal direction of the mandrel 12 at the holding position of the pair of belt conveyance mechanisms 24 and the mandrel 12 pulled out from the hose contact portion 20 It is a place which pinches via belt 44 from the both sides of a direction.

As shown in FIG. 2, the pulley drive motor 52 is attached to a position near the rear portion 38 B of each movable plate 38, and the lower end of the support shaft 4602 of the drive pulley 46 and the output shaft 5202 of the pulley drive motor 52 are It is connected via a chain sprocket mechanism 60.
When the pulley drive motor 52 is operated at the nipping position of the pair of belt transport mechanisms 24, the pair of belts 44 travel in opposite directions, and the belt 12 on which the plurality of pressure rollers 50 are disposed is located on both sides of the mandrel 12. And the mandrel 12 is pulled out from the hose contact portion 20.

As shown in FIG. 1, the first mandrel receiving guide roller 26 is provided on the floor surface close to the hose contact portion 20 so as to be capable of moving up and down.
As shown in FIG. 7, the mandrel 12 is pulled out of the hose contact portion 20 by the clamp portion 30 in the contracted state of the drawn fluid cylinder 32, but when the clamp of the mandrel 12 is released by the clamp portion 30 from this state The mandrel 12 is pulled back to the hose contact portion 20 side, the end of the mandrel 12 is separated from the holding groove 3002A of the lower clamp member 3002, and as shown in FIG. 8, the mandrel 12 hangs down by its own weight.
In this state, even if the drawing fluid cylinder 32 is extended and the mandrel 12 is pulled out by the pair of belt conveying mechanisms 24, the end 1202 of the mandrel 12 abuts the lower clamp member 3002 or the movable table below the lower clamp member 3002 Since the portion 34 is hit, the drawing fluid cylinder 32 can not be extended.
Such a defect is automatically eliminated by the first mandrel receiving guide roller 26 without manual work by the worker.
The first mandrel receiving guide roller 26 extends in a direction orthogonal to the portion of the mandrel 12 drawn from the hose contact portion 20 by the clamp portion 30 when the axial direction is horizontally directed and viewed in plan view It is rotatably supported by the support shaft 2602. A small diameter portion for receiving the mandrel 12 is formed at a central portion in the axial direction of the first mandrel receiving guide roller 26.

The support shaft 2602 is supported by the piston rod 6204 of the roller fluid cylinder 62 whose axis is extended in the vertical direction, the cylinder body 6202 is supported on the floor, and in the present embodiment, the roller fluid cylinder 62 is air. It is a cylinder.
Therefore, the first mandrel receiving guide roller 26 is moved up and down by the expansion and contraction operation of the roller fluid cylinder 62.
The first mandrel receiving guide roller 26 is always located at the retracted position away from the piston rod 3204 and the moving table 34, and as shown in FIG. Is pulled up from the hose contact portion 20 and raised to a raised position, and in the raised position, it supports from below the mandrel 12 near the hose contact portion 20 to prevent the mandrel 12 from drooping.
When the end 1202 of the mandrel 12 is placed on the holding groove 3002 A of the lower clamp member 3002 when the drawing fluid cylinder 32 is extended and the moving table 34 is moved to the hose contact portion 20 side, The mandrel receiving guide roller 26 is lowered to return to the retracted position.

As shown in FIGS. 2 and 3, the second mandrel receiving guide roller 28 is provided at a position between the driving pulley 46 and the pulley driving motor 52, and one of the pair of belt conveying mechanisms 24 is a belt conveying mechanism 24. The movable plate 38 is provided via a bracket 3810.
The second mandrel receiving guide roller 28 supports the mandrel 12 pulled out by the pair of belt conveying mechanisms 24 from below to prevent the mandrel 12 from hanging down, and smoothly transfers the mandrel 12 to the downstream conveying portion 18 described later. is there.

Further, as shown in FIG. 7, in the contracted state of the drawn fluid cylinder 32, a roller group 1802 constituting the downstream side conveying portion 18 at a position above the drawn fluid cylinder 32 separated to the rear of the rear portion 38B of the movable plate 38. A part of is arranged.
The end of the mandrel 12 that hangs down by its own weight at a portion in front of the roller 1802A located closest to the hose contact portion 20 among a part of the roller group 1802, that is, a portion near the hose contact portion 20 of the roller 1802A A guide plate 64 for guiding the portion 1202 upward is provided, and the guide plate 64 is intended to smoothly transport the mandrel 12 pulled out by the belt transport mechanism 24 by the downstream transport portion 18.

Next, the case where the mandrel 12 is pulled out of the hose 14 by using the mandrel pulling out apparatus 10A will be described.
The pair of belt transport mechanisms 24 are located at the clamping release position, and the first mandrel receiving guide roller 26 is located at the retracted position.
As shown in FIG. 1, the drawing fluid cylinder 32 is in the extended state, the clamp part 30 is changed from the clamp release state to the clamp state, and the end 1202 of the mandrel 12 protruding from the through hole 2012 of the hose contact part 20 is clamped. Clamp by.
Next, as shown in FIG. 7, the drawn fluid cylinder 32 is contracted from the stretched state into the contracted state, and the mandrel 12 is pulled out by the clamp unit 30.
Here, the first mandrel receiving guide roller 26 is raised from the retracted position to the raised position.
Next, the clamp unit 30 is put into the clamp release state, and the clamp of the end 1202 of the mandrel 12 by the clamp unit 30 is released.
By this release, as shown in FIG. 8, the elasticity of the hose 14 pulls the mandrel 12 back to the hose contact portion 20 side, and the end 1202 of the mandrel 12 is disengaged from the holding groove 3002 A of the lower clamp member 3002. However, as shown in FIG. 9, since the first mandrel receiving guide roller 26 is positioned, the mandrel 12 is straightened by the first mandrel receiving guide roller 26 as shown in FIG. The extended state is maintained.

Next, as shown in FIG. 10, the drawing fluid cylinder 32 is extended.
After the drawing fluid cylinder 32 is extended and the end 1202 of the mandrel 12 is placed on the holding groove 3002A of the lower clamp member 3002, as shown in FIG. A collision between the first mandrel receiving guide roller 26 and the lower portion of the movable table 34 is prevented.
As the drawn fluid cylinder 32 shifts from the reduced state to the extended state, the mandrel 12 is inserted between the belts 44 of the pair of belt conveyance mechanisms 24 located at the pinching release position.
Then, as shown in FIG. 11, when the drawn fluid cylinder 32 is in the intermediate state between the reduced state and the extended state, the pair of belt conveyance mechanisms 24 is set to the sandwiching position, and a plurality of pressure contact of the pair of belt conveyance mechanisms 24 is performed. The mandrel 12 is held by the belt 44 via the support roller 50, and the pulley drive motor 52 is rotated to convey the belts 44 of the pair of belt conveyance mechanisms 24. Thereafter, the mandrels 12 Pull out from the contact portion 20.
The mandrel 12 pulled out by the pair of belts 44 is delivered to the downstream side conveyance unit 18 via the second mandrel receiving guide roller 28 and the guide plate 64 as shown in FIGS. 12 and 13, and the downstream side conveyance unit It is transported smoothly by 18.

Therefore, according to the present embodiment, the length of the mandrel drawing device 10A is sufficient for the length of the drawn fluid cylinder 32 in the stretched state.
Therefore, even when the length of the mandrel 12 is increased to 30 m and 40 m along with the length of the hose 14, the length of the mandrel extracting device 10A does not become longer corresponding to the length of the hose 14, and As you can see, it does not have to be 30m or 40m, but several meters are enough.
Therefore, the proportion occupied by the mandrel extraction device 10A in the production line of the hose 14 can be significantly reduced, which is extremely advantageous in effectively utilizing the space at the production site.
Further, since the pair of belt transport mechanisms 24 are disposed on both sides of the mandrel 12 in the horizontal direction, it is advantageous in compacting the height of the mandrel extracting device 10A.

Second Embodiment
Next, a second embodiment will be described with reference to FIGS.
In the following description of the embodiment, the same parts and members as those in the first embodiment are indicated by the same reference numerals and the explanation thereof is omitted, and the parts different from the first embodiment are mainly emphasized. explain.
The second embodiment is different from the first embodiment in that the pair of belt conveyance mechanisms 24 are disposed above and below the mandrel 12 pulled out of the hose contact portion 20.
As shown in FIG. 14, in addition to a base plate portion 3402 similar to the first embodiment, a connecting plate portion 3404 and a pair of leg portions 3406 as in the first embodiment, the movable base 34 is one side of the base plate portion 3402 in the width direction. It has a vertical plate 3410 set up from the above.
A pair of belt transport mechanisms 24 are disposed above and below the mandrel 12 which is pulled out of the hose contact portion 20 through the vertical plate 3410.
As shown in FIGS. 15-17, the pair of belt transport mechanisms 24 are, as in the first embodiment, movable plate 38, movable plate fluid cylinder 40, movable plate guide 42, belt 44, and drive, respectively. A pulley 46, a driven pulley 48, a pressure roller 50, and a pulley drive motor 52 are included.
As shown in FIG. 16, the movable plate 38 is disposed parallel to the vertical plate 3410, and includes vertically extending rails 4202 provided on the front and back of the vertical plate 3410, and the rails 4202 provided on the movable plate 38. A pair of movable plates 38 vertically extend in a direction perpendicular to the longitudinal direction of the mandrel 12 with respect to the central axis of the mandrel 12 pulled out of the hose 14 by the movable plate guide 42 comprising the guide 4204 slidably coupled. You will be guided to move to

Further, a pinion 54 is rotatably provided on the vertical plate 3410 about a shaft, and a rack 56 engaged with the pinion 54 is provided on the surface of the movable plate 38 facing the vertical plate 3410. The pair of movable plates 38 are configured to move in a direction perpendicular to the longitudinal direction of the mandrel 12 in the vertical direction while maintaining an equal distance with respect to the central axis of.
The movable plate fluid cylinder 40 is provided only on the upper movable plate 38, the cylinder body 4002 is attached to the vertical plate 3410, and the piston rod 4004 is connected to the upper movable plate 38.
In the present embodiment, when the movable plate fluid cylinder 40 expands and contracts, the upper movable plate 38 moves up and down, and the lower movable plate 38 is in the reverse direction to the upper movable plate 38 via the pinion 54 and the rack 56. The upper and lower movable plates 38 are raised and lowered while maintaining the equal distance between the pair of belt transport mechanisms 24 with respect to the central axis of the mandrel 12.
When the movable plate fluid cylinder 40 is in the extended state, the pair of belt transfer mechanisms 24 is in a sandwiching position where the belt 44 sandwiches the mandrel 12. In the reduced state of the movable plate fluid cylinder 40, the pair of belt transfer mechanisms 24 is The belt 44 is in the nipping release position where it is separated from the mandrel 12.
As in the first embodiment, the movable plate fluid cylinders 40 are provided corresponding to the upper and lower movable plates 38, and the upper and lower movable plates 38 are respectively moved up and down by the movable plate fluid cylinder 40. Of course it is good.

As shown in FIG. 17, a side plate 66 is provided opposite to the movable plate 38 at a position opposite to the vertical plate 3410, and the movable plate 38 and the side plate 66 are connected at their rear ends to the connecting plate 68. Are linked by
The drive pulley 46 is provided at a position near the rear portion 38B at the center in the width direction of each movable plate 38, and the driven pulley 48 is provided in the front portion 38A at the center in the width direction of each movable plate 38.
The drive pulley 46 is integrally rotatably coupled to a horizontally extending support shaft 4602, and the driven pulley 48 is rotatably supported by the horizontally extending support shaft 4802. One of the support shafts 4602 and 4802 The end is rotatably supported by the movable plate 38, and the other end is rotatably supported by the side plate 66.
As shown in FIGS. 15 and 17, the belt 44 is wound around the drive pulley 46 and the driven pulley 48, and the pressure roller 50 is provided on the inner surface of the pair of belt conveyance mechanisms 24 where the belts 44 face each other. A plurality of gaps 44 are provided at intervals in the longitudinal direction.
The pulley drive motor 52 is attached to a position near the rear portion 38 B of each movable plate 38, and an output shaft 5202 of the pulley drive motor 52 is connected to a support shaft 4602 of the drive pulley 46.
In the second embodiment, the upper and lower belts 44 determine the position of the mandrel 12 in the vertical direction when the mandrel 12 is pulled out by the pair of belt transport mechanisms 24, so that the second mandrel supports the mandrel 12 from below. The receiving guide roller 28 is not provided, and as shown in FIG. 14 and FIG. 17, the shaft center is in the vertical direction and the axis is in contact with the mandrel 12 pulled out by the pair of belt conveying mechanisms 24 from both sides in the horizontal direction. A pair of vertical rollers 70 are provided.
According to the second embodiment, it is the same as the first embodiment except for the advantage that the height of the mandrel drawing-out device 10A of the first embodiment is made compact. Effect is achieved.
In the second embodiment, the pair of belt transport mechanisms 24 are disposed on both sides of the mandrel 12 in the vertical direction, which is advantageous in compacting the width of the mandrel extracting device 10B instead of its height. .

(Modification of the second embodiment)
Next, a modification of the second embodiment will be described with reference to FIGS. 18 and 19.
In this modification, the lower movable plate 38 is fixed to the vertical plate 3410, and only the upper movable plate 38 is moved up and down.
Therefore, the lower movable plate 38 is not provided with the movable plate fluid cylinder 40 or the movable plate guide 42 composed of the rail 4202 and the guide 4204, and the vertical plate 3410 is provided with the pinion 54. In addition, the rack 56 that meshes with the pinion 54 is not provided on the upper and lower movable plates 38.
In this modification, in the belt transport mechanism 24 of the lower movable plate 38, the shaft center of the mandrel 12 placed on the belt 44 of the belt transport mechanism 24 is inserted into the through hole 2012 of the hose contact portion 20. It is provided to coincide with the axis of the portion of the mandrel 12 and the portion of the mandrel 12 clamped by the clamp portion 30.
The same effect as that of the first embodiment is also achieved by this modification.

Third Embodiment
Next, a third embodiment will be described with reference to FIGS.
In the third embodiment, the pair of belt conveyance mechanisms 24 is provided at a position opposite to the hose contact portion 20 with the drawn fluid cylinder 32 interposed therebetween.
In the third embodiment, the movable base 34 is not provided with the portion of the substrate portion 3402 on which the pair of belt conveyance mechanisms 24 of the first embodiment is provided, and the clamp portion 30 is expanded and contracted by the drawn fluid cylinder 32. Only move back and forth linearly.
A substrate portion 3402A corresponding to the portion of the substrate portion 3402 where the pair of belt conveyance mechanisms 24 of the first embodiment is provided is installed via the base 72 at a position separated from the drawing fluid cylinder 32, and the substrate portion 3402A is Similarly to the first embodiment, a pair of belt conveyance mechanisms 24 are provided movably between the holding position and the holding release position with respect to the mandrel 12 pulled out by the clamp unit 30.
Further, on the cylinder body 3202 of the drawn fluid cylinder 32, a part of the roller group 1802 constituting the downstream side conveyance section 18 is provided substantially over the entire length of the cylinder body 3202, and the mandrel 12 drawn by the clamp section 30 is a pair. It is designed to be smoothly transported to the belt transport mechanism 24.

FIG. 21 shows the state in which the first contraction operation of the drawing fluid cylinder 32 is completed, and FIG. 22 shows the state in which the second contraction operation of the drawing fluid cylinder 32 is completed. FIG. In the third contraction operation of the drawing fluid cylinder 32, the mandrel 12 reaches the pair of belt conveyance mechanisms 24, and thereafter, the mandrel 12 is drawn out by the pair of belt conveyance mechanisms 24, as shown in the state where the contraction operation of Be
According to such a third embodiment, the length of the mandrel extracting device 10C is a dimension obtained by adding the length of the pair of belt conveying mechanisms 24 to the length of the drawn fluid cylinder 32 in the extended state. Become.
Therefore, even when the length of the mandrel 12 is increased to 30 m and 40 m along with the length of the hose 14, the length of the mandrel extracting device 10A does not become longer corresponding to the length of the hose 14, and As you can see, it does not have to be 30m or 40m, but several meters are enough.
Therefore, as in the first embodiment, the proportion of the mandrel extraction device 10C in the production line of the hose 14 can be significantly reduced, which is extremely advantageous in effectively utilizing the space at the production site.
Further, in the third embodiment, the drawn fluid cylinder 32 and the pair of belt conveyance mechanisms 24 are separated, which is advantageous in efficiently performing maintenance of the pair of belt conveyance mechanisms 24.

10A to 10C Mandrel Pullout Device 12 Mandrel 1202 End 14 Hose 1802 Roller Group 1802A Roller 20 Hose Contact 24 Paired Belt Conveying Mechanism 26 First Mandrel Receiving Guide Roller 30 Clamping Part 32 Pulling Fluid Cylinder 3202 Cylinder Body 3204 Piston Rod 34 Mobile platform 64 Guide plate

Claims (8)

A mandrel drawing device for drawing a mandrel from a hose,
A hose abutment portion capable of abutting the end of the hose to allow axial movement of a mandrel inserted into the hose;
A withdrawal fluid cylinder having a piston rod parallel to the mandrel towards the hose abutment;
A clamping unit for clamping an end of a mandrel attached to the end of the piston rod and protruding from the hose abutment;
It is movable between a holding position for holding the mandrel from both sides of the mandrel pulled out from the hose contact portion by the clamp portion by expansion and contraction of the drawing fluid cylinder, and a holding release position for releasing the holding. A pair of belt transport mechanisms for pulling the mandrel from the hose contact portion by being driven at the holding position;
A mandrel extraction device comprising: The pair of belt transport mechanisms are disposed horizontally on both sides of the mandrel,
The mandrel extracting device according to claim 1, wherein The drawn fluid cylinder has a cylinder body in which the piston rod is inserted and retracted.
There is provided a moving table attached to the tip of the piston rod and reciprocatingly linearly moving above the cylinder body by the projection and retraction of the piston rod.
The pair of belt conveyance mechanisms are provided on the moving table,
The mandrel extracting device according to claim 2, wherein The mandrel ascends in a state of being pulled out of the hose contact portion by the clamp portion at a location near the hose contact portion between the hose contact portion and the cylinder body, and A first mandrel receiving guide roller is provided which supports the position of the mandrel from below and prevents the drooping of the mandrel.
The mandrel drawing-out apparatus according to claim 3, characterized in that: At the location of the withdrawal fluid cylinder opposite to the hose abutment, a roller group is provided which guides the mandrel away from the hose abutment;
A portion of the roller group is disposed above the point of the cylinder body opposite the piston rod,
The mandrel drawing-out apparatus according to claim 4, characterized in that: A guide plate for guiding an end portion of a mandrel hanging down by its own weight onto the roller is provided at a position near the hose contact portion of the roller located closest to the hose contact portion among the roller group. ,
The mandrel drawing-out apparatus according to claim 5, characterized in that: The pair of belt transport mechanisms are disposed on both sides of the mandrel in the vertical direction,
The mandrel extracting device according to claim 1, wherein The pair of belt conveyance mechanisms are provided at a position opposite to the hose contact portion across the drawn fluid cylinder.
The mandrel extracting device according to claim 1, wherein

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