TWI760798B - Flexible tube manufacturing apparatus - Google Patents

Flexible tube manufacturing apparatus Download PDF

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Publication number
TWI760798B
TWI760798B TW109125224A TW109125224A TWI760798B TW I760798 B TWI760798 B TW I760798B TW 109125224 A TW109125224 A TW 109125224A TW 109125224 A TW109125224 A TW 109125224A TW I760798 B TWI760798 B TW I760798B
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Taiwan
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resin
gear pump
state
kneading mechanism
valve
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TW109125224A
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Chinese (zh)
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TW202118526A (en
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菊澤良治
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日商Ｐｌａ技研股份有限公司
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本發明之課題在於提供一種可使2種樹脂之混合比精密且回應良好地變化的軟管製造裝置。 本發明之一實施態樣之軟管製造裝置具備有：第1擠出機，其擠出第1樹脂；第2擠出機，其擠出較第1樹脂柔軟的第2樹脂；成型裝置，其具有自第1擠出機供給第1樹脂的第1樹脂供給路徑及自第2擠出機供給第2樹脂的第2樹脂供給路徑，將所被供給的樹脂擠出成形於編織線之表面；第1齒輪泵，其被設置於第1樹脂供給路徑之中途；及第2齒輪泵，其被設置於第2樹脂供給路徑之中途；第1齒輪泵及第2齒輪泵係與成型裝置一體地被設置。The subject of this invention is to provide the hose manufacturing apparatus which can change the mixing ratio of two resins precisely and respond well. A hose manufacturing apparatus according to an embodiment of the present invention includes: a first extruder for extruding a first resin; a second extruder for extruding a second resin that is softer than the first resin; and a molding device, It has a first resin supply path for supplying the first resin from the first extruder and a second resin supply path for supplying the second resin from the second extruder, and the supplied resin is extruded and molded on the surface of the braided wire ; a first gear pump, which is installed in the middle of the first resin supply path; and a second gear pump, which is installed in the middle of the second resin supply path; the first gear pump and the second gear pump are integrated with the molding device ground is set.

Description

軟管製造裝置Hose manufacturing equipment

本發明係關於一種用以將軟管擠出成形的軟管製造裝置，該軟管係利用樹脂覆蓋編織線之外表面而成。The present invention relates to a hose manufacturing apparatus for extruding a hose, the hose being formed by covering the outer surface of a braided wire with a resin.

於醫療機構中，為了向患者之生物體內之既定部位注入藥液、造影劑等，或將生物體內之體液等取出，而使用被稱為導管的管狀之醫療器械。該導管為了通過彎曲之血管等而***至生物體內，而對前端側部分要求有柔軟性，使得不傷害血管等，又，使得容易沿血管等之彎曲部分彎曲。另一方面，對導管中未***至生物體內之部分被要求有適度之剛性，使得容易操作導管。因此，提出有以前端側柔軟且手端側變硬之方式沿長度方向使硬度逐漸地變化之導管的各種製造裝置。例如，專利文獻1中記載有具有彎曲彈性係數自前端側朝基端側方向連續地增加之傾斜特性的導管。 [先前技術文獻] [專利文獻]In medical institutions, a tubular medical device called a catheter is used to inject a drug solution, a contrast medium, etc. into a predetermined part of a patient's body, or to extract a body fluid, etc. from the body. In order to be inserted into a living body through a curved blood vessel or the like, the catheter is required to have flexibility in the distal portion so as not to damage the blood vessel or the like, and to be easily bent along the curved portion of the blood vessel or the like. On the other hand, the portion of the catheter that is not inserted into the living body is required to have moderate rigidity so that the catheter can be easily handled. Therefore, various manufacturing apparatuses of catheters which gradually change the hardness in the longitudinal direction so that the distal end side is soft and the hand end side becomes rigid have been proposed. For example, Patent Document 1 describes a catheter having an inclination characteristic in which the flexural modulus of elasticity continuously increases from the distal end side toward the proximal end side direction. [Prior Art Literature] [Patent Literature]

[專利文獻1]日本專利特開平8-57035號公報[Patent Document 1] Japanese Patent Laid-Open No. 8-57035

(發明所欲解決之問題)(The problem that the invention intends to solve)

作為改變2種以上合成樹脂之混合比而進行熔融擠出的方法之一，在專利文獻1中記載有經時性且連續地改變自2台以上擠出機所被供給之熔融合成樹脂之至少一者的供給速度而進行混合並擠出的方法。然而，存在有如下問題：於使自擠出機之樹脂之供給速度、即擠出機之擠出速度發生變化之情形時，因殘留有存在於流路內之樹脂的壓力而樹脂之流量不立刻發生變化，其結果，2種以上樹脂之混合比不連續地變化。As one of the methods for melt extrusion by changing the mixing ratio of two or more kinds of synthetic resins, Patent Document 1 describes that at least one of the melted synthetic resins supplied from two or more extruders is continuously and continuously changed over time. A method of mixing and extruding at one supply speed. However, when the supply speed of the resin from the extruder, that is, the extrusion speed of the extruder is changed, there is a problem that the flow rate of the resin is not adjusted due to the pressure of the resin remaining in the flow path. The change occurs immediately, and as a result, the mixing ratio of two or more resins changes discontinuously.

作為精密地控制樹脂之流量的方法，亦考慮於擠出機與成型裝置之間設置齒輪泵，控制齒輪泵之吐出量代替控制擠出機之擠出速度的方法。但，於該情形時，存在有如下問題：因串聯地連接擠出機、齒輪泵及成型裝置而樹脂之供給路徑變長，從而導致藉由齒輪泵使樹脂之流量發生變化之後至實際地自模具被擠出的樹脂之混合比發生變化為止的回應變差。As a method of precisely controlling the flow rate of the resin, a method of installing a gear pump between the extruder and the molding device and controlling the discharge amount of the gear pump instead of controlling the extrusion speed of the extruder is also considered. However, in this case, there is a problem in that the supply path of the resin becomes long by connecting the extruder, the gear pump, and the molding device in series, and the flow rate of the resin is changed by the gear pump until the actual flow rate is changed. The response until the mixing ratio of the resin extruded from the die is changed is deteriorated.

因此，本發明之目的在於提供一種可使2種樹脂之混合比精密且回應良好地進行變化的軟管製造裝置。 (解決問題之技術手段)Therefore, the objective of this invention is to provide the hose manufacturing apparatus which can change the mixing ratio of two resins precisely and respond favorably. (Technical means to solve problems)

本發明之一實施態樣之軟管製造裝置具備有：第1擠出機，其擠出第1樹脂；第2擠出機，其擠出較第1樹脂柔軟的第2樹脂；成型裝置，其具有自第1擠出機供給第1樹脂的第1樹脂供給路徑及自第2擠出機供給第2樹脂的第2樹脂供給路徑，將所被供給的樹脂擠出成形於編織線之表面；第1齒輪泵，其被設置於第1樹脂供給路徑之中途；及第2齒輪泵，其被設置於第2樹脂供給路徑之中途；第1齒輪泵及第2齒輪泵係與成型裝置一體地被設置。A hose manufacturing apparatus according to an embodiment of the present invention includes: a first extruder for extruding a first resin; a second extruder for extruding a second resin that is softer than the first resin; and a molding device, It has a first resin supply path for supplying the first resin from the first extruder and a second resin supply path for supplying the second resin from the second extruder, and the supplied resin is extruded and molded on the surface of the braided wire ; a first gear pump, which is installed in the middle of the first resin supply path; and a second gear pump, which is installed in the middle of the second resin supply path; the first gear pump and the second gear pump are integrated with the molding device ground is set.

又，本發明之另一實施態樣之軟管製造裝置具備有：第1擠出機，其擠出第1樹脂；第2擠出機，其擠出較第1樹脂柔軟的第2樹脂；第3擠出機，其擠出較第2樹脂柔軟的第3樹脂；成型裝置，其具有自第1擠出機供給第1樹脂的第1樹脂供給路徑、自第2擠出機供給第2樹脂的第2樹脂供給路徑及自第3擠出機供給第3樹脂的第3樹脂供給路徑，將所被供給的樹脂擠出成形於編織線之表面；第1齒輪泵，其被設置於第1樹脂供給路徑之中途；第2齒輪泵，其被設置於第2樹脂供給路徑之中途；及第3齒輪泵，其被設置於第3樹脂供給路徑之中途；第1齒輪泵、第2齒輪泵及第3齒輪泵係與成型裝置一體地被設置。 (對照先前技術之功效)Moreover, a hose manufacturing apparatus according to another embodiment of the present invention includes a first extruder for extruding a first resin; a second extruder for extruding a second resin that is softer than the first resin; A third extruder for extruding a third resin that is softer than the second resin; a molding device having a first resin supply path for supplying the first resin from the first extruder, and a second extruder for supplying the second resin The second resin supply path for resin and the third resin supply path for supplying the third resin from the third extruder extrude the supplied resin onto the surface of the braided wire; the first gear pump is provided on the first 1 in the middle of the resin supply path; a second gear pump installed in the middle of the second resin supply path; and a third gear pump installed in the middle of the third resin supply path; the first gear pump, the second gear The pump and the third gear pump are provided integrally with the molding device. (Compared to the efficacy of the prior art)

根據本發明，可提供一種可使2種樹脂之混合比精密且回應良好地進行變化的軟管製造裝置。ADVANTAGE OF THE INVENTION According to this invention, the hose manufacturing apparatus which can change the mixing ratio of two resins precisely and respond well can be provided.

以下，對本發明之實施形態進行說明。在以下之說明中，對將本發明應用於軟管之製造裝置之例進行說明，該軟管之構成係於樹脂層即內層管之外表面設置編織層(網管)，進而，利用樹脂層即外層管覆蓋編織層。作為此種軟管之一例，可列舉導管軸。然而，導管軸僅為軟管之一例，本發明亦可應用於使用在內視鏡之軟管等之其他用途之軟管的製造裝置。Hereinafter, embodiments of the present invention will be described. In the following description, an example in which the present invention is applied to a manufacturing apparatus for a hose is described. The hose is constructed by providing a braided layer (mesh tube) on the outer surface of an inner tube, which is a resin layer, and further using the resin layer. That is, the outer tube covers the braid. As an example of such a hose, a catheter shaft is mentioned. However, the catheter shaft is only an example of the hose, and the present invention can also be applied to a manufacturing apparatus of a hose used for other purposes such as a hose of an endoscope.

圖1、圖2及圖3分別係表示實施形態之軟管製造裝置之概略構成之前視圖、右側視圖及俯視圖。1 , 2 and 3 are a front view, a right side view, and a plan view, respectively, showing the schematic configuration of the hose manufacturing apparatus according to the embodiment.

軟管製造裝置100係用以使用樹脂將軟管7擠出成形的裝置，其具備有第1擠出機1a、第2擠出機1b、第3擠出機1c、成型裝置2、第1齒輪泵3a、第2齒輪泵3b、第3齒輪泵3c、及用以控制成型裝置2的控制裝置4。於第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c被安裝有用以驅動各者的驅動機構5a、驅動機構5b及驅動機構5c。驅動機構5a～5c例如包含有馬達及減速機。再者，構成軟管製造裝置100的各裝置被安裝於殼體8，並被固定於既定之架台等之上。又，雖省略圖示，但於成型裝置2之上游側及下游側適當地設置有用以供給編織線6的供給裝置、使被擠出成形的軟管進行冷卻的冷卻裝置、捲取被擠出成形之軟管7的捲取裝置等。編織線6自圖1及圖3中之右方向朝左方向被搬送。編織線6例如為於內層管上設置有編織層(網管)，且使芯線(導引線)插通於內層中部之中空部的狀態者。軟管7為於編織線6之表面設置有外層管而成者，可藉由在外層管之成形後抽取編織線6之芯線而獲得導管軸。The hose manufacturing apparatus 100 is an apparatus for extruding the hose 7 using resin, and includes a first extruder 1a, a second extruder 1b, a third extruder 1c, a molding apparatus 2, a first extruder 1 The gear pump 3a, the 2nd gear pump 3b, the 3rd gear pump 3c, and the control apparatus 4 for controlling the shaping|molding apparatus 2. A drive mechanism 5a, a drive mechanism 5b, and a drive mechanism 5c for driving each of the first gear pump 3a, the second gear pump 3b, and the third gear pump 3c are attached. The drive mechanisms 5a to 5c include, for example, a motor and a reduction gear. In addition, each apparatus which comprises the hose manufacturing apparatus 100 is attached to the housing|casing 8, and is fixed to a predetermined|prescribed stand or the like. In addition, although the illustration is omitted, a supply device for supplying the braided wire 6, a cooling device for cooling the extruded tube, and a coiling and extruding tube are appropriately provided on the upstream side and the downstream side of the molding device 2. A coiling device for the formed hose 7, etc. The braided yarn 6 is conveyed from the right direction to the left direction in FIGS. 1 and 3 . The braided wire 6 is, for example, a state in which a braided layer (net tube) is provided on the inner layer tube, and the core wire (guide wire) is inserted into the hollow part in the middle part of the inner layer. The hose 7 is formed by disposing an outer layer tube on the surface of the braided wire 6, and the catheter shaft can be obtained by extracting the core wire of the braided wire 6 after the outer layer tube is formed.

第1擠出機1a、第2擠出機1b及第3擠出機1c例如為螺旋擠出機，使樹脂之顆粒物熔融，並自前端之吐出口擠出。向第1擠出機1a、第2擠出機1b及第3擠出機1c分別供給硬度、顏色、彈性係數、強度、耐藥品性等之特性不同的第1樹脂、第2樹脂及第3樹脂。本實施形態中，第1樹脂為硬度最高之樹脂，第2樹脂為較第1樹脂柔軟之樹脂，第3樹脂為較第2樹脂更柔軟之樹脂。自第1擠出機1a及第2擠出機1b被擠出的熔融樹脂於下述之混練機構16中以既定之混合比被混練。另一方面，自第3擠出機1c被擠出的熔融樹脂被供給至下述之第3閥18。The 1st extruder 1a, the 2nd extruder 1b, and the 3rd extruder 1c are screw extruders, for example, and melt the resin pellets and extrude them from the discharge port at the front end. The first resin, the second resin, and the third resin having different properties such as hardness, color, elastic modulus, strength, chemical resistance, etc. are supplied to the first extruder 1a, the second extruder 1b, and the third extruder 1c, respectively. resin. In this embodiment, the first resin is a resin with the highest hardness, the second resin is a resin that is softer than the first resin, and the third resin is a resin that is softer than the second resin. The molten resin extruded from the first extruder 1a and the second extruder 1b is kneaded at a predetermined mixing ratio in a kneading mechanism 16 described below. On the other hand, the molten resin extruded from the 3rd extruder 1c is supplied to the 3rd valve 18 mentioned later.

成型裝置2係將自第1擠出機1a、第2擠出機1b及第3擠出機1c所被供給的樹脂擠出成形於編織線6之表面的裝置。以下，同時參照圖1～圖7，將成型裝置2之詳細的構成於下文進行敍述。The molding apparatus 2 is an apparatus for extruding and molding the resin supplied from the first extruder 1 a , the second extruder 1 b , and the third extruder 1 c on the surface of the braided wire 6 . Hereinafter, the detailed configuration of the molding apparatus 2 will be described below with reference to FIGS. 1 to 7 together.

於本實施形態中，成型裝置2包含有分割體26及27。分割體26係進行所使用之樹脂之選擇、切換及混合以及向編織線6之表面的樹脂之擠出的單元。另一方面，分割體27被設置在相較分割體26更靠在樹脂之流動方向的上游側，用以將分割體26與第1擠出機1a、第2擠出機1b及第3擠出機1c連接的單元。In the present embodiment, the molding apparatus 2 includes divided bodies 26 and 27 . The division body 26 is a unit that performs selection, switching, and mixing of the resin to be used, and extrusion of the resin to the surface of the braided wire 6 . On the other hand, the split body 27 is provided on the upstream side in the flow direction of the resin rather than the split body 26, and is used to extrude the split body 26 with the first extruder 1a, the second extruder 1b, and the third extruder. The unit that is connected to the machine 1c.

首先，對分割體27進行說明。First, the divided body 27 will be described.

圖4係沿圖1所示之IV-IV線之剖面圖，圖5係沿圖1所示之V-V線之剖面圖，圖6係沿圖5所示之VI-VI線之剖面圖。4 is a sectional view taken along line IV-IV shown in FIG. 1 , FIG. 5 is a sectional view taken along line V-V shown in FIG. 1 , and FIG. 6 is a sectional view taken along line VI-VI shown in FIG. 5 .

本實施形態中，作為一例，分割體27被構成為分為於上下被積層的3個金屬塊25a～25c。金屬塊25a～25c藉由未圖示之螺栓等之固定件被固定而被一體化。再者，圖4相當於金屬塊25a(分割體27)之俯視圖，圖5相當於金屬塊25b之俯視圖。如圖5及圖6所示，於分割體27被設置有自第1擠出機1a供給第1樹脂的第1樹脂供給路徑19a、自第2擠出機1b供給第2樹脂的第2樹脂供給路徑19b、及自第3擠出機1c供給第3樹脂的第3樹脂供給路徑19c。第1樹脂供給路徑19a、第2樹脂供給路徑19b及第3樹脂供給路徑19c均係自金屬塊25b之側面通過金屬塊25b及25a之內部到達至金屬塊25a之上表面的流路。於金屬塊25b之側面設置有與第1樹脂供給路徑19a、第2樹脂供給路徑19b及第3樹脂供給路徑19c之各者對應的開口部28a、開口部28b及開口部28c。於該等開口部28a、開口部28b及開口部28c分別連接第1擠出機1a、第2擠出機1b及第3擠出機1c。於金屬塊25a之上表面設置有與第1樹脂供給路徑19a、第2樹脂供給路徑19b及第3樹脂供給路徑19c之各者對應的開口部29a、開口部29b及開口部29c。金屬塊25a之上表面之開口部29a～29c係用以向分割體26供給樹脂的開口部，於使分割體26及27一體化的狀態下，與被設置於分割體26的流路連接。In the present embodiment, as an example, the divided body 27 is configured to be divided into three metal blocks 25a to 25c which are layered up and down. The metal blocks 25a-25c are fixed and integrated by fasteners, such as a bolt which is not shown in figure. In addition, FIG. 4 corresponds to the top view of the metal block 25a (divided body 27), and FIG. 5 corresponds to the top view of the metal block 25b. As shown in FIGS. 5 and 6 , the split body 27 is provided with a first resin supply path 19a for supplying the first resin from the first extruder 1a, and a second resin for supplying the second resin from the second extruder 1b The supply path 19b, and the 3rd resin supply path 19c which supplies the 3rd resin from the 3rd extruder 1c. The first resin supply path 19a, the second resin supply path 19b, and the third resin supply path 19c are all flow paths from the side surface of the metal block 25b to the upper surface of the metal block 25a through the inside of the metal blocks 25b and 25a. Openings 28a, 28b, and 28c corresponding to each of the first resin supply path 19a, the second resin supply path 19b, and the third resin supply path 19c are provided on the side surface of the metal block 25b. The 1st extruder 1a, the 2nd extruder 1b, and the 3rd extruder 1c are connected to these opening part 28a, the opening part 28b, and the opening part 28c, respectively. Openings 29a, 29b, and 29c corresponding to each of the first resin supply path 19a, the second resin supply path 19b, and the third resin supply path 19c are provided on the upper surface of the metal block 25a. The openings 29a to 29c on the upper surface of the metal block 25a are openings for supplying resin to the divided body 26, and are connected to the flow path provided in the divided body 26 in a state where the divided bodies 26 and 27 are integrated.

作為一例，將第3樹脂供給路徑19c之剖面示於圖6。第1樹脂供給路徑19a及第2樹脂供給路徑19b除流路長度不同以外，被構成為與圖6所示之第3樹脂供給路徑19c大致相同。As an example, the cross section of the third resin supply path 19c is shown in FIG. 6 . The 1st resin supply path 19a and the 2nd resin supply path 19b are comprised substantially the same as the 3rd resin supply path 19c shown in FIG. 6 except that the flow path length is different.

於第1樹脂供給路徑19a、第2樹脂供給路徑19b及第3樹脂供給路徑19c各自之中途被設置有第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c。如圖5及圖6所示，第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c係藉由將相互地嚙合的2個齒輪31可旋轉地收納於被設置在金屬塊25b的齒輪收納部30內，並分別利用金屬塊25a及25c將金屬塊25b之上表面及下表面密封而所構成。構成第1齒輪泵3a的齒輪31被連接至圖1所示之驅動機構5a，構成第2齒輪泵3b的齒輪31被連接至圖1所示之驅動機構5b，構成第3齒輪泵3c的齒輪31被連接至圖1所示之驅動機構5c。A first gear pump 3a, a second gear pump 3b, and a third gear pump 3c are provided in the middle of each of the first resin supply path 19a, the second resin supply path 19b, and the third resin supply path 19c. As shown in FIGS. 5 and 6 , the first gear pump 3a, the second gear pump 3b, and the third gear pump 3c are rotatably accommodated in a metal block 25b provided with two gears 31 that mesh with each other. In the gear housing portion 30, the upper surface and the lower surface of the metal block 25b are sealed by metal blocks 25a and 25c, respectively. The gear 31 constituting the first gear pump 3a is connected to the drive mechanism 5a shown in FIG. 1, the gear 31 constituting the second gear pump 3b is connected to the drive mechanism 5b shown in FIG. 1, and the gear constituting the third gear pump 3c 31 is connected to the drive mechanism 5c shown in FIG. 1 .

其次，對分割體26進行說明。Next, the divided body 26 will be described.

圖7係沿圖1所示之VII-VII線之剖面圖。FIG. 7 is a cross-sectional view taken along line VII-VII shown in FIG. 1 .

如圖7所示，分割體26具備有模具10、混練機構16、第1閥17a、第2閥17b及第3閥18。本實施形態中，作為一例，分割體26被構成為分為3個金屬塊24a～24c，於金屬塊24a設置有模具10及第3閥18，於金屬塊24b設置有第1閥17a及第2閥17b，於金屬塊24b及24c設置有混練機構16。As shown in FIG. 7 , the split body 26 includes the mold 10 , the kneading mechanism 16 , the first valve 17 a , the second valve 17 b , and the third valve 18 . In the present embodiment, as an example, the divided body 26 is configured to be divided into three metal blocks 24a to 24c, the metal block 24a is provided with the mold 10 and the third valve 18, and the metal block 24b is provided with the first valve 17a and the third valve 18. 2. Valve 17b is provided with kneading mechanism 16 on metal blocks 24b and 24c.

模具(Die)10係用以將樹脂擠出至編織線6之外表面的模具(Mold)，具備有內模11及外模12。於內模11設置有使編織線6插通於中心軸部分的貫通孔13。外模12由金屬塊24a之一部分所形成，且具有收納內模11的中空部。於內模11之外周面與外模12之中空部之內周面之間形成有由既定之間隙所形成的樹脂之流路15。外模12具有與內模11之中心軸為同軸的擠出口14。該擠出口14構成流路15之前端部。流路15被連接至與下述之第3閥18連接的流路。自第3閥18被供給至流路15的樹脂流向擠出口14側，並擠出至通過內模11之貫通孔13及擠出口14向前方被不斷抽出的編織線6之表面。再者，內模11相對於外模12被固定。The die (Die) 10 is a die (Mold) for extruding resin to the outer surface of the braided wire 6 , and includes an inner die 11 and an outer die 12 . The inner mold 11 is provided with a through hole 13 through which the braided wire 6 is inserted into the central axis portion. The outer mold 12 is formed by a part of the metal block 24a, and has a hollow portion in which the inner mold 11 is accommodated. Between the outer peripheral surface of the inner mold 11 and the inner peripheral surface of the hollow portion of the outer mold 12, a resin flow path 15 is formed by a predetermined gap. The outer mold 12 has an extrusion port 14 coaxial with the central axis of the inner mold 11 . The extrusion port 14 constitutes the front end portion of the flow path 15 . The flow path 15 is connected to a flow path connected to a third valve 18 described below. The resin supplied to the flow path 15 from the third valve 18 flows toward the extrusion port 14 and is extruded to the surface of the braided wire 6 continuously drawn forward through the through hole 13 and extrusion port 14 of the inner mold 11 . Furthermore, the inner mold 11 is fixed with respect to the outer mold 12 .

混練機構16具備有螺桿21及馬達22。螺桿21被收納於被設置在金屬塊24b及24c的中空部。於螺桿21之外周面與金屬塊24b及24c之中空部之內周面之間形成有由既定之間隙所形成的流路23。向混練機構16之流路23供給第1樹脂及第2樹脂之一者或兩者。於螺桿21之外周面設置有複數個突起或銷，藉由馬達22之旋轉力繞中心軸旋轉，藉此混練機構16可將存在於流路23內的1種或2種樹脂進行混練並吐出。本實施形態中，對混練機構16使用螺桿21而所構成的例進行了說明，但只要為可對流路內之樹脂進行混練者，則並無特別被限定，亦可使用捏揉機代替螺桿21。再者，馬達22之旋轉藉由控制裝置4被控制。The kneading mechanism 16 includes a screw 21 and a motor 22 . The screw 21 is accommodated in the hollow part provided in the metal blocks 24b and 24c. Between the outer peripheral surface of the screw 21 and the inner peripheral surface of the hollow portions of the metal blocks 24b and 24c, a flow path 23 formed by a predetermined gap is formed. One or both of the first resin and the second resin are supplied to the flow path 23 of the kneading mechanism 16 . A plurality of protrusions or pins are arranged on the outer peripheral surface of the screw 21, and are rotated around the central axis by the rotational force of the motor 22, whereby the kneading mechanism 16 can knead and spit out one or two kinds of resins existing in the flow path 23. . In the present embodiment, the example in which the kneading mechanism 16 is configured using the screw 21 has been described, but it is not particularly limited as long as it can knead the resin in the flow path, and a kneader may be used instead of the screw 21 . Furthermore, the rotation of the motor 22 is controlled by the control device 4 .

第1閥17a被設置於混練機構16與第1齒輪泵3a之間，控制對混練機構16的第1樹脂之供給。第1閥17a具有於內部具有使樹脂流動之流路(未圖示)的圓柱狀之閥體。第1閥17a之閥體被連接至馬達等之驅動機構20a，可繞其中心軸旋轉。第1閥17a根據閥體之旋轉位置而可切換為第1齒輪泵3a與混練機構16連通的狀態與第1齒輪泵3a與混練機構16之間被遮斷的狀態。於第1齒輪泵3a與混練機構16連通之狀態下，第1樹脂供給路徑19a與混練機構16之流路23藉由被設置於閥體內的未圖示之流路而被連接。The first valve 17a is provided between the kneading mechanism 16 and the first gear pump 3a, and controls the supply of the first resin to the kneading mechanism 16 . The first valve 17a has a cylindrical valve body having a flow path (not shown) through which resin flows. The valve body of the first valve 17a is connected to a drive mechanism 20a such as a motor so as to be rotatable around its central axis. The first valve 17a can be switched between the state in which the first gear pump 3a and the kneading mechanism 16 communicate with each other and the state in which the first gear pump 3a and the kneading mechanism 16 are blocked depending on the rotational position of the valve body. In a state where the first gear pump 3a and the kneading mechanism 16 communicate with each other, the first resin supply path 19a and the flow path 23 of the kneading mechanism 16 are connected by a not-shown flow path provided in the valve body.

第2閥17b被設置於混練機構16與第2齒輪泵3b之間，控制對混練機構16的第2樹脂之供給。第2閥17b與第1閥17a為相同構成。即，第2閥17b具有於內部具有使樹脂流動之流路(未圖示)的圓柱狀之閥體，第2閥17b之閥體被連接至馬達等之驅動機構20b，可繞其中心軸旋轉。第2閥17b根據閥體之旋轉位置而可切換為第2齒輪泵3b與混練機構16連通的狀態與第2齒輪泵3b與混練機構16之間被遮斷的狀態。於第2齒輪泵3b與混練機構16連通之狀態下，第2樹脂供給路徑19b與混練機構16之流路23藉由被設置於閥體內的未圖示之流路而被連接。The second valve 17b is provided between the kneading mechanism 16 and the second gear pump 3b, and controls the supply of the second resin to the kneading mechanism 16 . The second valve 17b has the same configuration as the first valve 17a. That is, the second valve 17b has a cylindrical valve body having a flow path (not shown) inside which the resin flows, and the valve body of the second valve 17b is connected to a drive mechanism 20b such as a motor so as to be able to revolve around its central axis. rotate. The second valve 17b can be switched between the state in which the second gear pump 3b communicates with the kneading mechanism 16 and the state in which the second gear pump 3b and the kneading mechanism 16 are blocked, depending on the rotational position of the valve body. In a state where the second gear pump 3b communicates with the kneading mechanism 16, the second resin supply path 19b and the flow path 23 of the kneading mechanism 16 are connected by a not-shown flow path provided in the valve body.

第3閥18可將自混練機構16被擠出的樹脂與經由第3樹脂供給路徑19c自第3擠出機1c被供給的第3樹脂之任一者選擇性地供給至模具10。第3閥18具有於內部具有使樹脂流動之流路(未圖示)的圓柱狀之閥體，第3閥18之閥體被連接至馬達等之驅動機構20c，可繞其中心軸旋轉。第3閥18根據閥體之旋轉位置而可切換為混練機構16之流路23與模具10之流路15連通的狀態與第3齒輪泵3c與模具10之流路15連通的狀態。再者，於混練機構16之流路23與模具10之流路15連通之狀態下，流路23與流路15藉由被設置於閥體內的未圖示之流路而被連接，第3齒輪泵3c與模具10之流路15之間被遮斷。於第3齒輪泵3c與模具10之流路15連通之狀態下，與第3齒輪泵3c連接的第3樹脂供給路徑19c與流路15藉由被設置於閥體內的未圖示之流路而被連接，混練機構16之流路23與模具10之流路15之間被遮斷。The third valve 18 can selectively supply either the resin extruded from the kneading mechanism 16 or the third resin supplied from the third extruder 1c via the third resin supply path 19c to the die 10 . The third valve 18 has a cylindrical valve body having a flow path (not shown) through which the resin flows, and the valve body of the third valve 18 is connected to a drive mechanism 20c such as a motor so as to be rotatable around its central axis. The third valve 18 can be switched between the state in which the flow path 23 of the kneading mechanism 16 communicates with the flow path 15 of the mold 10 and the state in which the third gear pump 3c communicates with the flow path 15 of the mold 10 according to the rotational position of the valve body. Furthermore, in a state in which the flow path 23 of the kneading mechanism 16 and the flow path 15 of the mold 10 communicate with each other, the flow path 23 and the flow path 15 are connected by an unillustrated flow path provided in the valve body, and the third The gap between the gear pump 3c and the flow path 15 of the mold 10 is blocked. In a state where the third gear pump 3c is in communication with the flow path 15 of the mold 10, the third resin supply path 19c and the flow path 15 connected to the third gear pump 3c pass through a flow path not shown in the valve body. Then, the flow path 23 of the kneading mechanism 16 and the flow path 15 of the mold 10 are blocked.

控制裝置4包含有電腦，藉由控制驅動裝置5a～5c之驅動量，而可調整第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c各自之吐出量(每單位時間之樹脂之流量)。又，控制裝置5藉由控制驅動機構20a～20c之驅動量，而可切換第1閥17a、第2閥17b及第3閥18各自的狀態。進而，控制裝置4於執行擠出成形之過程中，使構成混練機構16的馬達22旋轉，並將旋轉速控制在既定之值。The control device 4 includes a computer, and by controlling the driving amounts of the driving devices 5a to 5c, the discharge volume of the first gear pump 3a, the second gear pump 3b, and the third gear pump 3c (resin per unit time) can be adjusted. flow). Moreover, the control apparatus 5 can switch each state of the 1st valve 17a, the 2nd valve 17b, and the 3rd valve 18 by controlling the drive amount of the drive mechanisms 20a-20c. Furthermore, the control device 4 rotates the motor 22 constituting the kneading mechanism 16 during the execution of extrusion molding, and controls the rotational speed to a predetermined value.

以下，對使用本實施形態之軟管製造裝置100製造軟管之方法進行說明。Hereinafter, the method of manufacturing a hose using the hose manufacturing apparatus 100 of this embodiment is demonstrated.

圖8A及圖8B係表示可利用實施形態之軟管製造裝置製造之軟管之一例之示意圖。8A and 8B are schematic views showing an example of a hose that can be manufactured by the hose manufacturing apparatus of the embodiment.

圖8A所示之軟管70係利用由樹脂層所形成的外層管覆蓋於內層管之外表面設置有編織層(網管)的編織線6而成者，具備有外層管之樹脂之硬度逐漸地變柔軟的硬度轉變部71、及被連接至硬度轉變部71之前端部且由較覆蓋硬度轉變部71之前端之樹脂更柔軟之樹脂所形成的軟基片72。軟基片72係可抑制血管之損傷而進一步提高安全性之被設置於導管之前端部(***側)者。軟基片72之長度例如為數mm～數cm，構成軟基片72的樹脂層(外層管)之硬度為一定。一直以來，一般而言圖8A所示之軟管係藉由個別地成型硬度轉變部71與成為軟基片72的柔軟之管，並藉由熱熔接將軟基片72接合至硬度轉變部71之前端而被製造。相對於此，本實施形態之軟管製造裝置100可連續地擠出成形硬度轉變部71與軟基片72，可將硬度轉變部71與軟基片72順暢且完全地連接，並且，可使軟基片72之長度自由地變化。The hose 70 shown in FIG. 8A is formed by covering a braided wire 6 with a braided layer (net tube) on the outer surface of the inner layer tube with an outer layer tube formed of a resin layer. The hardness of the resin having the outer layer tube gradually increases. The hardness transition portion 71 that becomes soft, and the soft substrate 72 connected to the front end portion of the hardness transition portion 71 and formed of a resin that is softer than the resin covering the front end of the hardness transition portion 71 . The soft base sheet 72 is provided at the front end (insertion side) of the catheter to further improve safety by suppressing damage to the blood vessel. The length of the soft substrate 72 is, for example, several mm to several cm, and the hardness of the resin layer (outer tube) constituting the soft substrate 72 is constant. Conventionally, generally speaking, the hose shown in FIG. 8A is formed by separately forming the hardness transition portion 71 and the flexible tube that becomes the soft substrate 72, and joining the soft substrate 72 to the hardness transition portion 71 by heat welding. Manufactured at the front end. On the other hand, the hose manufacturing apparatus 100 of the present embodiment can continuously extrude the hardness changing portion 71 and the soft substrate 72, and can smoothly and completely connect the hardness changing portion 71 and the soft substrate 72, and can make The length of the soft substrate 72 is freely varied.

於使用本實施形態之軟管製造裝置100製造軟管70之情形時，首先，使用第1樹脂及較第1樹脂柔軟的第2樹脂，於混練機構16中一面減少相對地較硬之第1樹脂的比例，一面將樹脂擠出至編織線6上，藉此，擠出成型硬度轉變部71。更詳細而言，控制裝置4係以第1齒輪泵3a及第2齒輪泵3b之兩者與混練機構16連通之方式控制第1閥17a及第2閥17b之狀態(旋轉位置)，且以混練機構16與模具10連通之方式控制第3閥18之狀態(旋轉位置)。於該狀態下，控制裝置4控制驅動裝置5a及5b，使藉由第1齒輪泵3a所吐出之第1樹脂之吐出量以既定之變化率連續地減少，使藉由第2齒輪泵3b所吐出之第2樹脂之吐出量以與第1樹脂之吐出量之變化率相同的變化率連續地增加。為了在使第1樹脂及第2樹脂之混合比發生變化之過程中，抑制自混練機構16至模具10的流路內之樹脂之壓力變動，維持所被成型之軟管之尺寸穩定性，而將被供給至混練機構16的第1樹脂及第2樹脂之總量設為一定。為此，控制部4使第1齒輪泵3a之吐出量之變化率與第2齒輪泵3b之吐出量之變化率一致。In the case of manufacturing the hose 70 using the hose manufacturing apparatus 100 of the present embodiment, first, a first resin and a second resin that is softer than the first resin are used, and the relatively hard first resin is reduced in the kneading mechanism 16. The ratio of the resin is to extrude the resin onto the braided wire 6 , whereby the hardness transition portion 71 is extruded. More specifically, the control device 4 controls the state (rotation position) of the first valve 17a and the second valve 17b so that both the first gear pump 3a and the second gear pump 3b communicate with the kneading mechanism 16, and The state (rotation position) of the third valve 18 is controlled so that the kneading mechanism 16 communicates with the mold 10 . In this state, the control device 4 controls the drive devices 5a and 5b so that the discharge amount of the first resin discharged by the first gear pump 3a continuously decreases at a predetermined rate of change, so that the discharge amount of the first resin discharged by the second gear pump 3b is reduced continuously. The discharge amount of the discharged second resin is continuously increased at the same change rate as the change rate of the discharge amount of the first resin. In the process of changing the mixing ratio of the first resin and the second resin, the pressure fluctuation of the resin in the flow path from the kneading mechanism 16 to the mold 10 is suppressed, and the dimensional stability of the molded hose is maintained. The total amount of the first resin and the second resin supplied to the kneading mechanism 16 is made constant. For this reason, the control part 4 makes the change rate of the discharge amount of the 1st gear pump 3a and the change rate of the discharge amount of the 2nd gear pump 3b correspond.

再者，於將僅由第1樹脂所形成的外層管擠出成形至硬度轉變部71之末端部(使用時之手端側部分)之情形時，控制裝置4於使第1齒輪泵3a及第2齒輪泵3b之兩者與混練機構16連通之前，設為以第1齒輪泵3a與混練機構16連通且第2齒輪泵3b與混練機構16之間被遮斷之方式控制第1閥17a及第2閥17b之狀態(旋轉位置)的狀態，將第1齒輪泵3a之吐出量控制在既定之吐出量。又，將僅由第2樹脂所形成的外層管擠出成形至硬度轉變部71之前端部(使用時之***側部分)之情形時，控制裝置4設為以自使第1齒輪泵3a及第2齒輪泵3b之兩者與混練機構16連通的狀態轉變至第2齒輪泵3b與混練機構16連通且第1齒輪泵3a與混練機構16之間被遮斷的狀態之方式控制第1閥17a及第2閥17b之狀態(旋轉位置)的狀態，將第2齒輪泵3b之吐出量控制在既定之吐出量。Furthermore, when the outer layer tube formed of only the first resin is extruded to the distal end portion (hand end side portion during use) of the hardness changing portion 71, the control device 4 causes the first gear pump 3a and the Before both of the second gear pumps 3b communicate with the kneading mechanism 16, the first valve 17a is controlled so that the communication between the first gear pump 3a and the kneading mechanism 16 and the communication between the second gear pump 3b and the kneading mechanism 16 are blocked. and the state (rotation position) of the second valve 17b, the discharge volume of the first gear pump 3a is controlled to a predetermined discharge volume. Moreover, when extruding the outer layer tube formed of only the second resin to the front end portion (the insertion side portion at the time of use) of the hardness changing portion 71, the control device 4 is set to automatically cause the first gear pump 3a and the The first valve is controlled so that the state in which both the second gear pumps 3b are communicated with the kneading mechanism 16 changes to the state where the second gear pump 3b communicates with the kneading mechanism 16 and the connection between the first gear pump 3a and the kneading mechanism 16 is blocked. 17a and the state (rotation position) of the second valve 17b control the discharge volume of the second gear pump 3b to a predetermined discharge volume.

其次，成型軟基片72。控制裝置4控制第1齒輪泵3a及第2齒輪泵3b之吐出量，於第1樹脂之比例到至達既定之目標值之後，於既定之時點，以第3齒輪泵3c與模具10連通之方式控制第3閥之狀態(旋轉位置)，將第3齒輪泵3c之吐出量控制在既定之吐出量。Next, the soft substrate 72 is formed. The control device 4 controls the discharge rates of the first gear pump 3a and the second gear pump 3b, and after the ratio of the first resin reaches a predetermined target value, the third gear pump 3c communicates with the mold 10 at a predetermined timing. The state (rotational position) of the third valve is controlled in such a way that the discharge volume of the third gear pump 3c is controlled to a predetermined discharge volume.

藉由控制裝置4如上述般控制第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c之吐出量、以及第1閥17a、第2閥17b及第3閥18之旋轉位置，而可製造圖8A所示之軟管70。By controlling the discharge rates of the first gear pump 3a, the second gear pump 3b, and the third gear pump 3c, and the rotational positions of the first valve 17a, the second valve 17b, and the third valve 18 by the control device 4 as described above, The hose 70 shown in Figure 8A can be manufactured.

又，本實施形態之軟管製造裝置100亦可製造如圖8B所示之具備有並非為軟基片為硬度轉變部74的軟管73。具體而言，可在藉由上述控制裝置4所進行之控制中不切換第3閥18之旋轉位置(即，不使第3閥18與模具10連通)，而藉此獲得圖8B所示之軟管73。Moreover, the hose manufacturing apparatus 100 of this embodiment can also manufacture the hose 73 provided with the hardness conversion part 74 which is not a soft substrate as shown in FIG. 8B. Specifically, the rotational position of the third valve 18 is not switched (that is, the third valve 18 and the mold 10 are not communicated) during the control by the above-described control device 4, and thereby the image shown in FIG. 8B can be obtained. Hose 73.

再者，成型硬度轉變部71時之第1樹脂之比例之初始值及目標值(最小值)為任意。In addition, the initial value and the target value (minimum value) of the ratio of the 1st resin at the time of molding the hardness transition part 71 are arbitrary.

如以上所說明般，本實施形態之軟管製造裝置100於成型裝置2內之第1樹脂供給路徑19a之中途、第2樹脂供給路徑19b之中途及第3樹脂供給路徑19c之中途分別設置有第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c。於如本實施形態般於成型裝置2中內藏有第1齒輪泵3a、第2齒輪泵3b及第3齒輪泵3c之情形時，與於成型裝置之外部設置齒輪泵之情形相比，可縮短自齒輪泵至模具10之擠出口14為止的流路長度。因此，於本實施形態之軟管製造裝置100中，可提高在調整齒輪泵之吐出量之後至實際地自模具被擠出的樹脂之混合比發生變化為止的回應。構成本實施形態之成型裝置2的分割體27係用以連接第1擠出機1a、第2擠出機1b及第3擠出機1c的連接單元，且係為了避免構成軟管製造裝置100的複數個裝置之干涉而將各裝置配置於維護性優異之位置所需的部分。可使2種以上樹脂之混合比發生變化的軟管製造裝置用於具備有閥、混練機構及其等之驅動機構等多數個裝置，並為了將與樹脂之種類相同數量的擠出機不產生干涉地進行配置並連接至成型裝置，而需要有分割體27。本實施形態之軟管製造裝置100中，於擠出機之配置、於擠出機與成型裝置之連接所需的分割體27內內藏有齒輪泵，因此，與同種裝置相比，可縮短自齒輪泵至模具為止的流路，可尋求上述回應提高。又，齒輪泵係可精密地控制吐出量之控制的裝置，因此，藉由在成型裝置2內內藏有齒輪泵，而可精密地進行對混練機構16及模具10的樹脂供給量之控制。因此，於本實施形態之軟管製造裝置100中，可使構成硬度轉變部71的第1樹脂及第2樹脂之混合比連續地進行變化，針對軟管7之尺寸穩定性亦優異。As described above, the hose manufacturing apparatus 100 of the present embodiment is provided in the middle of the first resin supply path 19a, the middle of the second resin supply path 19b, and the middle of the third resin supply path 19c in the molding apparatus 2, respectively. The first gear pump 3a, the second gear pump 3b, and the third gear pump 3c. In the case where the first gear pump 3a, the second gear pump 3b, and the third gear pump 3c are built in the molding device 2 as in the present embodiment, compared with the case where the gear pump is provided outside the molding device, the The length of the flow path from the gear pump to the extrusion port 14 of the die 10 is shortened. Therefore, in the hose manufacturing apparatus 100 of the present embodiment, it is possible to improve the response until the mixing ratio of the resin extruded from the die is actually changed after the discharge amount of the gear pump is adjusted. The split body 27 constituting the molding apparatus 2 of the present embodiment is a connecting unit for connecting the first extruder 1a, the second extruder 1b, and the third extruder 1c, and is used to avoid constituting the tube manufacturing apparatus 100. Parts necessary for arranging each device in a position with excellent maintainability due to the interference of a plurality of devices. The hose manufacturing apparatus that can change the mixing ratio of two or more resins is used for a large number of apparatuses equipped with valves, kneading mechanisms, and other driving mechanisms, and in order to avoid the production of extruders with the same number of resins. Arranged and connected to the molding device interferingly, the division body 27 is required. In the hose manufacturing apparatus 100 of the present embodiment, a gear pump is built in the split body 27 required for the arrangement of the extruder and the connection between the extruder and the molding apparatus, so that the length of the tube can be shortened compared with the same type of apparatus. The flow path from the gear pump to the mold can be improved by the above-mentioned response. In addition, the gear pump is a device that can precisely control the discharge amount. Therefore, by incorporating the gear pump in the molding device 2, the resin supply amount of the kneading mechanism 16 and the mold 10 can be precisely controlled. Therefore, in the hose manufacturing apparatus 100 of the present embodiment, the mixing ratio of the first resin and the second resin constituting the hardness changing portion 71 can be continuously changed, and the dimensional stability with respect to the hose 7 is also excellent.

又，本實施形態之軟管製造裝置100中，使用第1閥17a、第2閥17b及第3閥18而可將混練機構16之流路23與第1齒輪泵3a之間、混練機構16之流路23與第2齒輪泵3b之間、混練機構16與模具10之流路15之間、及第3齒輪泵3c與模具10之流路15之間適當地進行遮斷。因此，可防止於不對混練機構16或模具10供給樹脂之期間，樹脂自混練機構16或模具10向上游側進行逆流。In addition, in the hose manufacturing apparatus 100 of the present embodiment, the first valve 17a, the second valve 17b, and the third valve 18 are used to separate the flow path 23 of the kneading mechanism 16 and the first gear pump 3a, and the kneading mechanism 16 Between the flow path 23 and the second gear pump 3b, between the kneading mechanism 16 and the flow path 15 of the mold 10, and between the third gear pump 3c and the flow path 15 of the mold 10 are appropriately blocked. Therefore, the backflow of the resin from the kneading mechanism 16 or the mold 10 to the upstream side can be prevented while the resin is not being supplied to the kneading mechanism 16 or the mold 10 .

又，藉由在第1齒輪泵3a及第2齒輪泵3b之兩者與混練機構16連通的狀態下控制第1齒輪泵3a及第2齒輪泵3b的吐出量，而可使2種樹脂之混合比連續且精密地發生變化。Furthermore, by controlling the discharge rates of the first gear pump 3a and the second gear pump 3b in a state in which both the first gear pump 3a and the second gear pump 3b are communicated with the kneading mechanism 16, the two kinds of resins can be mixed together. The mixing ratio changes continuously and precisely.

(變形例) 上述實施形態中，對可製造圖8A所示之具有軟基片之軟管的裝置進行了說明。但，於構成製造圖8B所示之無軟基片之軟管之裝置的情形時，只要自上述軟管製造裝置100省略第3擠出機1c、第3樹脂供給路徑19c、第3齒輪泵3c、驅動機構5c、第3閥18、驅動機構20c，並將混練機構16之流路23與模具10之流路15連接即可。於該構成中，亦可藉由第1齒輪泵3a及第2齒輪泵3b分別被設置於成型裝置2內之第1樹脂供給路徑19a之中途及第2樹脂供給路徑19b之中途，而縮短自齒輪泵至模具10之擠出口14為止的流路，從而使上述混合比變化的回應提高。(Variation) In the above-described embodiment, an apparatus capable of producing the hose having the soft substrate shown in FIG. 8A has been described. However, in the case of constructing an apparatus for manufacturing a hose without a soft substrate shown in FIG. 8B , the third extruder 1c, the third resin supply path 19c, and the third gear pump may be omitted from the above-described hose manufacturing apparatus 100. 3c, the drive mechanism 5c, the third valve 18, the drive mechanism 20c, and the flow path 23 of the kneading mechanism 16 and the flow path 15 of the mold 10 may be connected. In this configuration, the first gear pump 3a and the second gear pump 3b can be provided in the middle of the first resin supply path 19a and the middle of the second resin supply path 19b in the molding apparatus 2, respectively, so that the self-timer can be shortened. The flow path from the gear pump to the extrusion port 14 of the die 10 improves the response to the above-mentioned change in the mixing ratio.

又，於上述實施形態中，第1閥17a、第2閥17b及第3閥18之構造並無特別地被限定，只要具有可實現上述之各閥之功能的構造即可。 (產業上之可利用性)In addition, in the above-described embodiment, the structures of the first valve 17a, the second valve 17b, and the third valve 18 are not particularly limited, as long as they have structures capable of realizing the functions of the aforementioned valves. (Industrial Availability)

本發明可利用在於醫療用之導管之製作時所使用的導管軸、於內視鏡所使用的管等的軟管製造裝置。The present invention can be used in a tube production apparatus such as a catheter shaft used in the production of a medical catheter, a tube used in an endoscope, and the like.

1a:第1擠出機 1b:第2擠出機 1c:第3擠出機 2:成型裝置 3a:第1齒輪泵 3b:第2齒輪泵 3c:第3齒輪泵 4:控制裝置 5a,5b,5c,20a,20b,20c:驅動機構 6:編織線 7,70,73:軟管 8:殼體 10:模具 13:貫通孔 14:擠出口 15,23:流路 16:混練機構 17a:第1閥 17b:第2閥 18:第3閥 19a:第1樹脂供給路徑 19b:第2樹脂供給路徑 19c:第3樹脂供給路徑 21:螺桿 22:馬達 24a,24b,24c,25a,25b,25c:金屬塊 26,27:分割體 28a,28b,28c,29a,29b,29c:開口部 30:齒輪收納部 31:齒輪 71,74:硬度轉變部 72:軟基片 100:軟管製造裝置1a: 1st extruder 1b: 2nd extruder 1c: 3rd extruder 2: Forming device 3a: 1st gear pump 3b: 2nd gear pump 3c: 3rd gear pump 4: Control device 5a, 5b, 5c, 20a, 20b, 20c: drive mechanism 6: Braided wire 7, 70, 73: Hose 8: Shell 10: Mold 13: Through hole 14: Extrusion port 15,23: Flow Path 16: Mixing mechanism 17a: 1st valve 17b: 2nd valve 18: 3rd valve 19a: 1st resin supply path 19b: Second resin supply path 19c: 3rd resin supply path 21: Screw 22: Motor 24a, 24b, 24c, 25a, 25b, 25c: Metal Blocks 26,27: Split Body 28a, 28b, 28c, 29a, 29b, 29c: Opening 30: Gear storage part 31: Gear 71,74: Hardness transition part 72: Soft substrate 100: Hose manufacturing plant

圖1係表示實施形態之軟管製造裝置之概略構成之前視圖。 圖2係圖1所示之軟管製造裝置之右側視圖。 圖3係圖1所示之軟管製造裝置之俯視圖。 圖4係沿圖1所示之IV-IV線之剖面圖。 圖5係沿圖1所示之V-V線之剖面圖。 圖6係沿圖5所示之VI-VI線之剖面圖。 圖7係沿圖1所示之VII-VII線之剖面圖。 圖8A係表示可利用實施形態之軟管製造裝置進行製造之軟管之一例之示意圖。 圖8B係表示可利用實施形態之軟管製造裝置進行製造之軟管之另一例之示意圖。Fig. 1 is a front view showing a schematic configuration of a hose manufacturing apparatus according to an embodiment. FIG. 2 is a right side view of the hose manufacturing apparatus shown in FIG. 1 . FIG. 3 is a top view of the hose manufacturing apparatus shown in FIG. 1 . FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG. 1 . FIG. 5 is a cross-sectional view taken along the line V-V shown in FIG. 1 . FIG. 6 is a cross-sectional view taken along the line VI-VI shown in FIG. 5 . FIG. 7 is a cross-sectional view taken along line VII-VII shown in FIG. 1 . FIG. 8A is a schematic diagram showing an example of a hose which can be manufactured by the hose manufacturing apparatus of the embodiment. FIG. 8B is a schematic diagram showing another example of the hose which can be manufactured by the hose manufacturing apparatus of the embodiment.

1a:第1擠出機 1a: 1st extruder

1b:第2擠出機 1b: 2nd extruder

1c:第3擠出機 1c: 3rd extruder

2:成型裝置 2: Forming device

3a:第1齒輪泵 3a: 1st gear pump

3b:第2齒輪泵 3b: 2nd gear pump

3c:第3齒輪泵 3c: 3rd gear pump

6:編織線 6: Braided wire

7:軟管 7: Hose

13:貫通孔 13: Through hole

10:模具 10: Mold

14:擠出口 14: Extrusion port

15,23:流路 15,23: Flow Path

16:混練機構 16: Mixing mechanism

17a:第1閥 17a: 1st valve

17b:第2閥 17b: 2nd valve

18:第3閥 18: 3rd valve

19a:第1樹脂供給路徑 19a: 1st resin supply path

19b:第2樹脂供給路徑 19b: Second resin supply path

19c:第3樹脂供給路徑 19c: 3rd resin supply path

20a,20b,20c:驅動機構 20a, 20b, 20c: Drive mechanism

21:螺桿 21: Screw

22:馬達 22: Motor

24a,24b,24c:金屬塊 24a, 24b, 24c: Metal Blocks

26,27:分割體 26,27: Split Body

29a,29b,29c:開口部 29a, 29b, 29c: Opening

100:軟管製造裝置 100: Hose manufacturing plant

Claims (5)

一種軟管製造裝置，其具備有：第1擠出機，其擠出第1樹脂；第2擠出機，其擠出較上述第1樹脂柔軟的第2樹脂；成型裝置，其具有自上述第1擠出機供給上述第1樹脂的第1樹脂供給路徑及自上述第2擠出機供給上述第2樹脂的第2樹脂供給路徑，將所被供給的樹脂擠出成形於編織線之表面；第1齒輪泵，其被設置於上述第1樹脂供給路徑之中途；及第2齒輪泵，其被設置於上述第2樹脂供給路徑之中途；上述第1齒輪泵及上述第2齒輪泵係與上述成型裝置一體地被設置，上述成型裝置具備有：模具，其具有使上述編織線插通的貫通孔、及將樹脂擠出至通過上述貫通孔的上述編織線之表面的擠出口；混練機構，其可將上述第1樹脂與上述第2樹脂混練並擠出至上述模具；第1閥，其被設置於上述混練機構與上述第1齒輪泵之間，可切換為上述第1齒輪泵與上述混練機構連通的狀態與上述第1齒輪泵與上述混練機構之間被遮斷的狀態；第2閥，其被設置於上述混練機構與上述第2齒輪泵之間，可切換為上述第2齒輪泵與上述混練機構連通的狀態與上述第2齒輪泵與上述混練機構之間被遮斷的狀態；及控制裝置； 上述控制裝置於上述軟管之擠出成形時，可於上述第1齒輪泵與上述混練機構連通且上述第2齒輪泵與上述混練機構之間被遮斷的第1狀態、上述第1齒輪泵及上述第2齒輪泵之兩者與上述混練機構連通的第2狀態、以及上述第2齒輪泵與上述混練機構連通且上述第1齒輪泵與上述混練機構之間被遮斷的第3狀態之間，切換上述第1閥及上述第2閥的狀態。 A hose manufacturing apparatus including: a first extruder for extruding a first resin; a second extruder for extruding a second resin that is softer than the first resin; and a molding apparatus having the The first resin supply path for supplying the first resin from the first extruder and the second resin supply path for supplying the second resin from the second extruder extrude the supplied resin onto the surface of the braided wire a first gear pump installed in the middle of the first resin supply path; and a second gear pump installed in the middle of the second resin supply path; the first gear pump and the second gear pump system The molding device is provided integrally with the molding device, and the molding device includes a mold having a through hole through which the braided wire is inserted, and an extrusion port for extruding resin onto the surface of the braided wire passing through the through hole; and kneading a mechanism for kneading the first resin and the second resin and extruding them to the mold; a first valve, which is provided between the kneading mechanism and the first gear pump, and which can be switched to the first gear pump A state in which it communicates with the kneading mechanism and a state in which the space between the first gear pump and the kneading mechanism is blocked; a second valve provided between the kneading mechanism and the second gear pump can be switched to the first gear pump. 2. The state in which the gear pump communicates with the above-mentioned kneading mechanism and the state in which the second gear pump and the above-mentioned kneading mechanism are blocked; and a control device; The control device may be in a first state in which the first gear pump and the kneading mechanism communicate with each other and the second gear pump and the kneading mechanism are blocked during extrusion molding of the hose, and the first gear pump and the second state in which both of the second gear pumps communicate with the kneading mechanism, and the third state in which the second gear pump communicates with the kneading mechanism and the first gear pump and the kneading mechanism are blocked. During this time, the states of the first valve and the second valve are switched. 如請求項1之軟管製造裝置，其中，上述控制裝置係於上述第1閥及上述第2閥處於上述第2狀態時，使藉由上述第1齒輪泵所吐出之上述第1樹脂之吐出量與藉由上述第2齒輪泵所吐出之上述第2樹脂之吐出量連續地變化，藉此，使被供給至上述混練機構的上述第1樹脂之比例連續地增加或減少。 The hose manufacturing apparatus according to claim 1, wherein the control device causes the first resin to be discharged by the first gear pump when the first valve and the second valve are in the second state. The amount is continuously changed with the discharge amount of the second resin discharged by the second gear pump, whereby the ratio of the first resin supplied to the kneading mechanism is continuously increased or decreased. 一種軟管製造裝置，其具備有：第1擠出機，其擠出第1樹脂；第2擠出機，其擠出較上述第1樹脂柔軟的第2樹脂；第3擠出機，其擠出較上述第2樹脂柔軟的第3樹脂；成型裝置，其具有自上述第1擠出機供給上述第1樹脂的第1樹脂供給路徑、自上述第2擠出機供給上述第2樹脂的第2樹脂供給路徑及自上述第3擠出機供給上述第3樹脂的第3樹脂供給路徑，將所被供給的樹脂擠出成形於編織線之表面；第1齒輪泵，其被設置於上述第1樹脂供給路徑之中途；第2齒輪泵，其被設置於上述第2樹脂供給路徑之中途；及第3齒輪泵，其被設置於上述第3樹脂供給路徑之中途； 上述第1齒輪泵、第2齒輪泵及上述第3齒輪泵係與上述成型裝置一體地被設置，上述成型裝置具備有：模具，其具有使上述編織線插通的貫通孔、及將樹脂擠出至通過上述貫通孔的上述編織線之表面的擠出口；混練機構，其可將上述第1樹脂與上述第2樹脂混練並擠出；第1閥，其被設置於上述混練機構與上述第1齒輪泵之間，可切換為上述第1齒輪泵與上述混練機構連通的狀態與上述第1齒輪泵與上述混練機構之間被遮斷的狀態；第2閥，其被設置於上述混練機構與上述第2齒輪泵之間，可切換為上述第2齒輪泵與上述混練機構連通的狀態與上述第2齒輪泵與上述混練機構之間被遮斷的狀態；第3閥，其可將自上述混練機構被吐出的樹脂與自上述第3擠出機被擠出的上述第3樹脂之任一者選擇性地供給至上述模具；及控制裝置；上述控制裝置於上述軟管之擠出成形時，可於上述第1齒輪泵與上述混練機構連通且上述第2齒輪泵與上述混練機構之間被遮斷的第1狀態、上述第1齒輪泵及上述第2齒輪泵之兩者與上述混練機構連通的第2狀態、以及上述第2齒輪泵與上述混練機構連通且上述第1齒輪泵與上述混練機構之間被遮斷的第3狀態之間，切換上述第1閥及上述第2閥的狀態，進而，可於上述混練機構與上述模具連通的第4狀態及上述第3齒輪泵與上述模具連通的第5狀態之間，切換上述第3閥的狀態。 A hose manufacturing apparatus including: a first extruder for extruding a first resin; a second extruder for extruding a second resin that is softer than the first resin; and a third extruder for extruding a second resin Extruding a third resin that is softer than the second resin; a molding apparatus having a first resin supply path for supplying the first resin from the first extruder, and a molding device for supplying the second resin from the second extruder The second resin supply path and the third resin supply path for supplying the third resin from the third extruder extrude the supplied resin onto the surface of the braided wire, and the first gear pump is installed in the a first resin supply path in the middle; a second gear pump installed in the middle of the second resin supply path; and a third gear pump installed in the middle of the third resin supply path; The first gear pump, the second gear pump, and the third gear pump are provided integrally with the molding device, and the molding device includes a mold having a through hole through which the braided wire is inserted, and a resin for extruding a resin. An extrusion port that is output to the surface of the braided wire passing through the through hole; a kneading mechanism for kneading and extruding the first resin and the second resin; a first valve provided in the kneading mechanism and the first 1 between the gear pumps, switchable between the state in which the first gear pump communicates with the kneading mechanism and the state in which the first gear pump and the kneading mechanism are blocked; a second valve is provided in the kneading mechanism Between the second gear pump and the second gear pump can be switched between the state where the second gear pump communicates with the kneading mechanism and the state where the second gear pump and the kneading mechanism are blocked; Either one of the resin ejected by the kneading mechanism and the third resin extruded from the third extruder is selectively supplied to the mold; and a control device; the control device is used for extrusion molding of the hose In the first state in which the first gear pump and the kneading mechanism communicate with each other and the second gear pump and the kneading mechanism are blocked, both the first gear pump and the second gear pump can be connected to the above Between the second state in which the kneading mechanism communicates, and the third state in which the second gear pump communicates with the kneading mechanism and the connection between the first gear pump and the kneading mechanism is blocked, the first valve and the second valve are switched. The state of the valve, and further, the state of the third valve can be switched between a fourth state in which the kneading mechanism communicates with the mold and a fifth state in which the third gear pump communicates with the mold. 如請求項3之軟管製造裝置，其中，上述控制裝置係於上述第1閥及上述第2閥處於上述第2狀態時，使藉由上述第1齒輪泵所吐出之上述第1樹脂之吐出量與藉由上述第2齒輪泵所吐出之上述第2樹脂之吐出量連續地變化，藉此，使被供給至上述混練機構的上述第1樹脂之比例連續地增加或減少。 The hose manufacturing apparatus according to claim 3, wherein the control device causes the first resin to be discharged by the first gear pump when the first valve and the second valve are in the second state. The amount is continuously changed with the discharge amount of the second resin discharged by the second gear pump, whereby the ratio of the first resin supplied to the kneading mechanism is continuously increased or decreased. 如請求項4之軟管製造裝置，其中，上述控制裝置係於被供給至上述混練機構的上述第1樹脂之比例到達至既定值之後，將上述第3閥之狀態自上述第4狀態切換至上述第5狀態。 The hose manufacturing apparatus according to claim 4, wherein the control device switches the state of the third valve from the fourth state to the state of the third valve after the ratio of the first resin supplied to the kneading mechanism reaches a predetermined value. State 5 above.
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