JP6223948B2 - Extrusion equipment - Google Patents

Description

  The present invention relates to an extrusion molding apparatus in which various components are provided so as to be movable and detachable with respect to a common support rail.

  Conventionally, there is an extrusion molding apparatus disclosed in Patent Document 1 below. According to this publication, the extrusion molding apparatus is made of resin so as to contain a flexible long material positioned on a virtual straight line and feed it in one direction, and the long material to be fed out. An extrusion molding machine for extruding the tube to form an intermediate product tube and a cooling device for cooling the intermediate product tube are provided.

  And the catheter is formed by the said extrusion molding apparatus.

JP 2006-314476 A

  By the way, in the said prior art, the sending machine which comprises an extrusion molding apparatus, an extrusion molding machine, and a cooling device are respectively attached to stationary side members, such as a mount frame.

  For this reason, when the alignment adjustment is performed at the time of assembling each component of the extrusion molding apparatus or at the time of changing the relative position such as when performing a trial operation, this adjustment work may be complicated.

  The present invention has been made paying attention to the above-described circumstances, and an object of the present invention is to facilitate an alignment adjustment operation at the time of assembling components of an extrusion molding apparatus.

The invention according to claim 1 includes an operation machine that feeds out a flexible long material, a first turn roll that bends one end portion side of the long material fed out from the operation machine, and a first turn roll. Measure the outer diameter of the long material sent from the feeder, which continuously feeds the one end side of the bent long material at a predetermined speed so as to go forward on a virtual straight line extending in the front-rear direction. A first outer diameter measuring device, a primary extruder for extruding an intermediate layer tube that is a resin tube so as to enclose a long material by extruding a hot melt resin through a die hole, and an intermediate layer tube are formed. A primary cooling device that cools and cures the long material immediately after its formation, and an outer layer that is a resin tube so as to enclose the intermediate layer tube that is cooled and cured by extruding the hot melt resin through another die hole Secondary extrusion to extrude the tube A secondary cooling device that cools and cures the long material on which the outer layer tube is formed immediately after the formation, and a second outer diameter measuring device that measures the outer diameter of the long material on which the outer layer tube is formed A take-up machine that continuously draws the long material on which the outer-layer tube is formed at a predetermined speed toward the front, a second turn roll that bends the long material taken by the take-up machine, and a second turn And a winder that winds up the long material bent by the roll, and extends linearly along a virtual straight line, and the cross-sections of the respective parts in the longitudinal direction are the same shape and size as the stationary side member Provided support rail to be attached, first turn roll, delivery machine, first outer diameter measuring device, primary extrusion molding machine, primary cooling device, secondary extrusion molding machine, secondary cooling device, second outer diameter measurement All of the container, the take-up machine and the second turn roll Individually movable toward the direction, and a extrusion apparatus characterized by comprising so as to be securable to the support rail that each moving position.

The invention according to claim 2 includes an operation device that feeds out a flexible long material, a first turn roll that bends one end of the long material fed from the operation device, and a first turn roll. Measure the outer diameter of the long material sent from the feeder, which continuously feeds the one end side of the bent long material at a predetermined speed so as to go forward on a virtual straight line extending in the front-rear direction. A first outer diameter measuring device, a primary extruder for extruding an intermediate layer tube that is a resin tube so as to enclose a long material by extruding a hot melt resin through a die hole, and an intermediate layer tube are formed. A primary cooling device that cools and cures the long material immediately after its formation, and an outer layer that is a resin tube so as to enclose the intermediate layer tube that is cooled and cured by extruding the hot melt resin through another die hole Secondary extrusion to extrude the tube A secondary cooling device that cools and cures the long material on which the outer layer tube is formed immediately after the formation, and a second outer diameter measuring device that measures the outer diameter of the long material on which the outer layer tube is formed And a take-up machine that continuously draws the long material on which the outer layer tube is formed at a predetermined speed toward the front, and a cutting machine that cuts the long material after being taken up by the take-up machine into a desired dimension, A support rail is provided that extends linearly along the virtual straight line, the cross-sections of each part in the longitudinal direction being the same shape and the same size, and attached to the stationary side member, and the first turn roll, the feeder, the first The outer diameter measuring device, primary extrusion molding machine, primary cooling device, secondary extrusion molding machine, secondary cooling device, second outer diameter measuring device, take-up machine, and cutting machine are all moved in the longitudinal direction of the support rail. Can be moved individually and can be fixed to the support rail at each moving position. As is extrusion apparatus characterized by comprising.

The invention of claim 3 is an extrusion molding apparatus characterized in that the cooling medium of the primary cooling device is air.

According to a fourth aspect of the present invention, there is provided an extrusion molding apparatus characterized in that the long material on which the intermediate layer tube is formed is used as a constituent member of the catheter.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention according to claim 1 includes an operation machine that feeds out a flexible long material, a first turn roll that bends one end portion side of the long material fed out from the operation machine, and a first turn roll. Measure the outer diameter of the long material sent from the feeder, which continuously feeds the one end side of the bent long material at a predetermined speed so as to go forward on a virtual straight line extending in the front-rear direction. A first outer diameter measuring device, a primary extruder for extruding an intermediate layer tube that is a resin tube so as to enclose a long material by extruding a hot melt resin through a die hole, and an intermediate layer tube are formed. A primary cooling device that cools and cures the long material immediately after its formation, and an outer layer that is a resin tube so as to enclose the intermediate layer tube that is cooled and cured by extruding the hot melt resin through another die hole Secondary extrusion to extrude the tube A secondary cooling device that cools and cures the long material on which the outer layer tube is formed immediately after the formation, and a second outer diameter measuring device that measures the outer diameter of the long material on which the outer layer tube is formed A take-up machine that continuously draws the long material on which the outer-layer tube is formed at a predetermined speed toward the front, a second turn roll that bends the long material taken by the take-up machine, and a second turn In an extrusion molding apparatus provided with a winder that winds a long material bent by a roll, it extends linearly along an imaginary straight line, and the cross-sections of each part in the longitudinal direction are the same shape and size. A support rail attached to the stationary side member, the first turn roll, the feeder, the first outer diameter measuring device, the primary extruder, the primary cooling device, the secondary extruder, the secondary cooling device, the first 2 outside diameter measuring instrument, take-up machine, second turn roll And individually movable towards the longitudinal direction of the support rail, and is provided so as to be securable to the support rail that each moving position.
Further, the invention of claim 2 is directed to an operating machine for feeding out a flexible long material, a first turn roll for bending one end of the long material fed from the operating machine, and a first turn. A feeding machine that continuously feeds one end side of the long material bent by the roll forward at a predetermined speed on a virtual straight line extending in the front-rear direction, and an outer diameter of the long material sent from the sending machine A first outer diameter measuring device for measuring, a primary extrusion molding machine for extruding an intermediate layer tube which is a resin tube so as to include a long material by extruding a hot melt resin through a die hole, and an intermediate layer tube A primary cooling device that cools and cures the formed long material immediately after its formation, and a resin tube that encloses the intermediate layer tube that is cooled and cured by extruding the hot melt resin through another die hole. Secondary extruding an outer tube A secondary cooling device that cools and hardens the long material on which the outer layer tube is formed immediately after the formation, and a second outer diameter that measures the outer diameter of the long material on which the outer layer tube is formed A measuring instrument, a take-up machine that continuously draws the long material on which the outer layer tube is formed at a predetermined speed toward the front, and a cutting machine that cuts the long material after being taken up by the take-up machine into a desired dimension. In the extrusion molding apparatus, the first turn roll is provided with a support rail that extends linearly along an imaginary straight line, and whose cross sections in the longitudinal direction have the same shape and the same size and are attached to the stationary member. Supports all of the feeder, first outer diameter measuring instrument, primary extrusion molding machine, primary cooling device, secondary extrusion molding machine, secondary cooling device, second outer diameter measuring instrument, take-up machine, cutting machine It can be moved individually in the longitudinal direction of the rail, and each moving position In is provided so as to be securable to the support rail.

For this reason, the feeding device, the extrusion molding machine, the cooling device, etc. of the extrusion molding device are attached to the support rail that extends linearly as described above when the relative position is changed during the assembly or trial operation. It is guided and can move linearly, and can be fixed to the support rail at each moving position. Therefore, alignment adjustment operations such as the delivery machine, the extrusion molding machine, and the cooling apparatus at the time of assembling the extrusion molding apparatus can be easily performed, and workability is improved.

According to a third aspect of the present invention, the cooling medium of the primary cooling device is air.

  Here, assuming that the cooling medium is water, the cooling device includes a water tank for storing water, an intermediate product tube that passes through the water tank, and a sealing device that seals between the water tank. Therefore, the cooling device tends to be large in size and large in mass.

  However, as described above, when the cooling medium is air, the cooling device can be made smaller and lighter than when the cooling medium is water. Therefore, the work of adjusting the alignment of the delivery device, the extrusion molding machine, and the cooling device at the time of assembling the extrusion molding apparatus can be made easier and the workability is further improved.

According to a fourth aspect of the present invention, the long material on which the intermediate layer tube is formed is a constituent member of the catheter.

  Here, the catheter has a small outer diameter and a small heat capacity in view of its use. Therefore, as described above, air is applied as a cooling medium for cooling the intermediate layer tube, and since the air is sufficient in a small amount, the cooling device can be further reduced in size and weight. Therefore, the work of adjusting the alignment of the delivery device, the extrusion molding machine, and the cooling device at the time of assembling the extrusion molding apparatus can be further facilitated, and the workability is further improved.

It is a simplified side view of a catheter and its extrusion apparatus. It is the elements on larger scale of FIG. FIG. 3 is a partial cross-sectional view taken along line III-III in FIG. 2.

  The present invention relates to an extrusion molding apparatus for a catheter or the like of the present invention, in order to implement the present invention in order to realize the purpose of facilitating alignment adjustment work when assembling the constituent members of the extrusion molding apparatus. The form of is as follows.

  That is, the extrusion molding apparatus extrudes a resin-made tube so that a flexible long material is positioned on a virtual straight line and is sent in one direction, and the long material to be fed is contained. An extruder for forming the intermediate product tube and a cooling device for cooling the intermediate product tube are provided. A support rail is provided that extends linearly along the imaginary straight line and that has cross-sections in the longitudinal direction that are the same shape and size as each other, and is attached to the stationary member. The delivery device, the extrusion molding machine, and the cooling device are provided so as to be individually movable in the longitudinal direction of the support rail, and to be fixed to the support rail at each moving position.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a medical catheter, and reference numeral 2 denotes an extrusion apparatus for forming the catheter 1. For convenience of explanation, the direction of the arrow Fr in the figure is assumed to be forward and will be described below.

  The catheter 1 is made of resin, and is formed by winding outer layer tubes 5 and 6 and a reinforcing wire 7 around the outer peripheral surface of the inner layer tube 5 to form a tube shape as a whole. 8 and an intermediate layer tube 9 that is interposed between the inner and outer layer tubes 5 and 6 and is a resin tube in which the reinforcing layer 8 is embedded.

  In the above case, the intermediate layer tube 9 is formed so that the outer peripheral surface of the intermediate layer tube 9 passes through the vicinity of the outermost surface in the radial direction of the reinforcing layer 8. Specifically, the diameter of the outer peripheral surface of the intermediate layer tube 9 passing near the outermost surface in the radial direction of the reinforcing layer 8 is 1.0 to 1.15 times the diameter of the outermost surface of the reinforcing layer 8, and preferably Is 1.0-1.14 times, more preferably 1.0-1.13 times.

  The outer diameter D1 of the catheter 1 is approximately 0.6 to 6.0 mm, and the inner diameter D2 is approximately 0.2 to 5.6 mm.

  The resin material of the inner layer tube 5 is, for example, polyethylene (LDPE or HDPE), polyethylene terephthalate, polypropylene, and the resin material of the outer layer tube 6 is, for example, polyether ether ketone (PEEK), polyurethane elastomer, or the like. , Both are thermoplastic.

  The wire 7 of the reinforcing layer 8 is applied with a metal wire (for example, stainless steel (SUS304), NiTi alloy, tungsten, etc.) or a resin fiber (for example, aramid fiber, polyamide fiber, carbon fiber, etc.). The Moreover, the cross-sectional shape of the strand 7 may be circular, elliptical, or polygonal. Moreover, the diameter dimension when this strand 7 is circular in cross section is approximately 0.2-0.4 mm.

  The reinforcing layer 8 may be any of a cross-type spiral braided layer, a braided braided layer, or a wire wound with the wire 7 in a coil shape.

  The extrusion molding apparatus 2 includes a gantry 14 as a stationary side member 13 that is installed on a work floor 12 and extends in the front-rear direction, and a feeder 15 that is installed at the rear end of the gantry 14. The inner layer tube 5, the reinforcing layer 8, and the metal core wire 18 fitted in the inner layer tube 5 are combined with each other to form a flexible long material 19, and the long material 19 is the above-described feeder 15. It is wound in a coil shape. The long material 19 can be fed upward from the feeding machine 15 at one end side thereof.

  The extrusion apparatus 2 includes a turn roll 21 that bends one end portion of the long material 19 fed from the feeding machine 15 forward, and a length that is bent forward by the turn roll 21. A sending machine 23 that continuously feeds one end portion side of the scale material 19 at a predetermined speed so as to go forward on a virtual straight line 22 that extends in the front-rear direction, and is positioned in front of the sending machine 23 and has the long length as described later. A puller 24 that continuously pulls the catheter 1 formed by processing one end of the material 19 forward at the predetermined speed, and the catheter 1 that has been pulled by the puller 24 is bent downward. The turn roll 25 to be wound and the catheter 1 supported by the front end portion of the gantry 14 and bent downward by the turn roll 25 are wound so as to be wound in a coil shape. It is equipped with a winder 26 that.

  Further, the extrusion molding apparatus 2 is configured to extrude the outer diameter measuring device 29 for measuring the outer diameter of the long material 19 sent out from the feeder 23 and the hot melt resin 30 through the die hole, and the long material 19. The intermediate layer tube 9, which is a resin tube, is extruded to encapsulate the screw-type primary extruder 32 that forms the intermediate product tube 31 and the intermediate product tube 31 is cooled immediately after the formation. A primary cooling device 33 to be cured, and the outer layer tube 6 which is a resin tube are extruded so as to enclose the cooled and cured intermediate product tube 31 by extruding the hot melt resin 35 through another die hole, A secondary extruder 36 for forming the catheter 1, a secondary cooling device 37 for cooling and hardening the catheter 1 immediately after its formation, and an outer diameter for measuring the outer diameter of the catheter 1 And a Joki 38.

  The extrusion molding apparatus 2 includes a support rail 43 that extends linearly along the virtual straight line 22 and is detachably attached to the upper surface of the gantry 14 that is the stationary member 13 by a fastener 42. The support rails 43 have the same cross section in the longitudinal direction.

  In particular, as shown in FIGS. 2 and 3, the primary cooling device 33 is mounted on the support rail 43 so that it can be moved back and forth only in the longitudinal direction, and the support rail. 43, a fastener 48 capable of arbitrarily fixing the support base 47 at a desired position in the longitudinal direction, a cooler 50 supported by the support base 47 and having a cooling chamber 49 inside, and the virtual straight line 22 A cooling pipe 51 supported at both ends by the cooler 50 so as to pass through the cooling chamber 49 and a plurality of cooling pipes 51 formed in the cooling pipe 51 and communicating with the cooling chamber 49 inside the cooling pipe 51. It has the communicating hole 52 and the nozzle 55 used as the cooling medium 54 by injecting the compressed air from the air compressor 53 in the said cooling chamber 49, and carrying out adiabatic expansion of this.

  When the intermediate product tube 31 immediately after being formed by the primary extruder 32 moves forward on the virtual straight line 22 in the cooling pipe 51, the intermediate product tube 31 is moved from the cooling chamber 49 to each of the above. The air is cooled and cured by the cooling medium 54 injected into the cooling pipe 51 through the communication hole 52.

  In FIG. 1, the secondary cooling device 37 is located on the virtual straight line 22, a cooler 60 having a cooling chamber 59 inside, a cooler 62 that cools air from the blower 61, and this cooling And a filter 63 for filtering and purifying the cooling air from the vessel 62. The cooler 60 is a known device called an electronic cooling / circulating device, and a cooling medium 64, which is cooling air purified by the filter 63, is supplied to the rear part of the cooling chamber 59. After passing, it returns to the suction side of the blower 61 from its front part.

  When the catheter 1 immediately after being formed by the secondary extruder 36 moves forward through the cooling chamber 59 and the cooler 60 on the virtual straight line 22, the catheter 1 is moved to the cooling medium 64. Then, it is cooled by air and cured, and thereafter wound by the winder 26 via the take-up machine 24 and the turn roll 25.

The catheter 1 taken up by the take-up machine 26 is then cut to a desired size, and the core wire 18 is extracted to obtain a final product. In addition, as shown with the dashed-two dotted line in the figure, it replaces with the said turn roll 25 and the winder 26, and the cutting machine which cuts the catheter 1 immediately after having been taken up by the said take-up machine 24 to a desired dimension one after another automatically 67 may be provided.

  Here, the turn roll 21, the delivery machine 23, the take-up machine 24, the turn roll 25, the outer diameter measuring instrument 29, the extrusion molding machines 32 and 36, the secondary cooling device 37, the outer diameter measuring instrument 38, and the cutting machine 67. Although not shown in detail, each has the same structure as the support base 47 and the fastener 48, and can be individually moved back and forth only in the longitudinal direction of the support rail 43, and at each moving position thereof. It is provided so that it can be fixed to the support rail 43.

  According to the said structure, the resin intermediate | middle layer tube 9 which inserts between the said inner and outer layer tubes 5 and 6 and embeds the said reinforcement layer 8 is provided, and the outer peripheral surface of this intermediate | middle layer tube 9 is the above-mentioned The intermediate layer tube 9 is formed so as to pass near the outermost surface in the radial direction of the reinforcing layer 8.

  For this reason, as described above, the tube-shaped reinforcing layer 8 formed by the strands 7 exists on the outer peripheral surface of the inner layer tube 5, so that the intermediate layer tube 9 in which the reinforcing layer 8 is embedded is provided. Even if a concave or convex portion is formed on the outer peripheral surface, the outer layer tube 6 containing the intermediate layer tube 9 can smooth the outer peripheral surface of the outer layer tube 6, that is, improve the smoothness of the outer peripheral surface of the catheter 1. be able to. Therefore, when the catheter 1 is inserted into a blood vessel, the catheter 1 can slide smoothly with respect to the inner peripheral surface of the blood vessel.

  Further, as described above, since the intermediate layer tube 9 is formed so that the outer peripheral surface of the intermediate layer tube 9 passes in the vicinity of the outermost surface in the radial direction of the reinforcing layer 8, when the reinforcing layer 8 is embedded. The thickness of each part of the intermediate tube 9 is kept to a minimum, and accordingly, the thickness of each part of the catheter 1 can be suppressed small. Therefore, since the desired flexibility can be secured for the catheter 1, the catheter 1 can smoothly follow even a tortuous blood vessel.

  Further, as described above, the support rail 43 that extends linearly along the imaginary straight line 22 and whose cross sections in the longitudinal direction have the same shape and the same size as each other and is attached to the stationary member 13 is provided. The machine 23, the extrusion molding machine 32, and the cooling device 33 are provided so as to be individually movable in the longitudinal direction of the support rail 43, and to be fixed to the support rail 43 at each moving position.

  For this reason, the feeder 23, the extruder 32, and the cooling device 33 of the extrusion molding apparatus 2 support linearly extended as described above when the relative position is changed during the assembly or trial operation. It is guided by the rail 43 and can be moved linearly, and can be fixed to the support rail 43 at each moving position. Therefore, the work of adjusting the alignment of the feeder 23, the extruder 32, and the cooling device 33 at the time of assembling the extruder 2 can be easily performed, and the workability is improved.

  Further, as described above, the cooling medium 54 of the cooling device 33 is air.

  Here, if the cooling medium 54 is water, the cooling device includes a water tank for storing water, and a seal that seals between the water tank and the intermediate product tube 31 that passes through the water tank. The above-described cooling device tends to be large and have a large mass.

  However, as described above, when the cooling medium 54 is air, the cooling device 33 can be made smaller and lighter than when the cooling medium 54 is water. Therefore, the work of adjusting the alignment of the delivery machine 23, the extrusion molding machine 32, and the cooling device 33 at the time of assembling the extrusion molding apparatus 2 can be performed more easily, and the workability is further improved.

  Further, as described above, the intermediate tube 31 is used as a constituent member of the catheter 1.

  Here, the catheter 1 has a small outer diameter and a small heat capacity in view of its use. Therefore, as described above, air is applied as the cooling medium 54 for cooling the intermediate layer tube 9, and since this air is sufficient in a small amount, the cooling device 33 can be further reduced in size and weight. Therefore, the work of adjusting the alignment of the delivery device 23, the extrusion molding machine 32, and the cooling device 33 at the time of assembling the extrusion molding device 2 can be further facilitated, and the workability is further improved.

DESCRIPTION OF SYMBOLS 1 Catheter 2 Extrusion apparatus 9 Intermediate | middle layer tube (resin tube)
DESCRIPTION OF SYMBOLS 13 Stationary side member 14 Base 19 Long material 22 Virtual straight line 23 Delivery machine 24 Take-out machine 31 Intermediate product tube 32 Extrusion machine 33 Cooling device 36 Extrusion machine 37 Cooling device 42 Fastening tool 43 Support rail 47 Support stand 48 Fastening tool 54 Cooling medium 64 Cooling medium

Claims (4)

An operating machine that feeds out a flexible long material, a first turn roll that bends one end of the long material that is fed out from the steering machine, and a length bent by the first turn roll A first feeding device that continuously feeds the one end side of the scale material forward at a predetermined speed on a virtual straight line extending in the front-rear direction, and measures an outer diameter of the long material fed from the feeder. An outer diameter measuring device, a primary extrusion molding machine for extruding an intermediate layer tube which is a resin tube so as to enclose the long material by extruding a hot melt resin through a die hole, and the intermediate layer tube were formed. A primary cooling device that cools and cures a long material immediately after its formation, and an outer layer that is a resin tube so as to contain the intermediate layer tube that has been cured by extruding a hot melt resin through another die hole and cooling it Extrude the tube And next extruder, a secondary cooling device which is cured by cooling the long material, wherein the outer tube is formed immediately after its formation, a second for measuring the outer diameter of the elongated member, wherein the outer tube is formed An outer diameter measuring instrument, a take-up machine for continuously taking the long material formed with the outer layer tube forward at the predetermined speed, and a second for bending the long material taken by the take-up machine. A turn roll, and a winder that winds the long material bent by the second turn roll;
The first turn roll, the feeder, and a support rail that extends linearly along the imaginary straight line and has cross-sections in the longitudinal direction that are the same shape and size and are attached to the stationary member, The first outer diameter measuring device, the primary extrusion molding machine, the primary cooling device, the secondary extrusion molding machine, the secondary cooling device, the second outer diameter measuring device, the take-up machine, the second An extrusion molding apparatus characterized in that all of the turn rolls are individually movable in the longitudinal direction of the support rail and can be fixed to the support rail at each moving position. An operating machine that feeds out a flexible long material, a first turn roll that bends one end of the long material that is fed out from the steering machine, and a length bent by the first turn roll A first feeding device that continuously feeds the one end side of the scale material forward at a predetermined speed on a virtual straight line extending in the front-rear direction, and measures an outer diameter of the long material fed from the feeder. An outer diameter measuring device, a primary extrusion molding machine for extruding an intermediate layer tube which is a resin tube so as to enclose the long material by extruding a hot melt resin through a die hole, and the intermediate layer tube were formed. A primary cooling device that cools and cures a long material immediately after its formation, and an outer layer that is a resin tube so as to contain the intermediate layer tube that has been cured by extruding a hot melt resin through another die hole and cooling it Extrude the tube A secondary extrusion machine, a secondary cooling device for cooling and curing the long material on which the outer layer tube is formed immediately after the formation, and a second for measuring the outer diameter of the long material on which the outer layer tube is formed An outer diameter measuring device, a take-up machine that continuously takes the long material on which the outer layer tube is formed at the predetermined speed toward the front, and the long material that has been taken up by the take-up machine to a desired size. A cutting machine for cutting,
  The first turn roll, the feeder, and a support rail that extends linearly along the imaginary straight line and has cross-sections in the longitudinal direction that are the same shape and size and are attached to the stationary member, Of the first outer diameter measuring device, the primary extrusion molding machine, the primary cooling device, the secondary extrusion molding machine, the secondary cooling device, the second outer diameter measuring device, the take-up machine, and the cutting machine An extrusion molding apparatus characterized in that all are provided so as to be individually movable in the longitudinal direction of the support rail, and to be fixed to the support rail at each moving position. The extrusion apparatus according to claim 1 or 2 , wherein the cooling medium of the primary cooling device is air. The extrusion apparatus according to claim 3 , wherein the long member on which the intermediate layer tube is formed is a constituent member of a catheter.

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