JPH0377772B2 - - Google Patents
Info
- Publication number
- JPH0377772B2 JPH0377772B2 JP15786984A JP15786984A JPH0377772B2 JP H0377772 B2 JPH0377772 B2 JP H0377772B2 JP 15786984 A JP15786984 A JP 15786984A JP 15786984 A JP15786984 A JP 15786984A JP H0377772 B2 JPH0377772 B2 JP H0377772B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- tubular body
- synthetic resin
- plasticity
- different diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は主として分注機などに用いるピペツト
などの、異径部を有する管状体の製造方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a tubular body having different diameter portions, such as a pipette mainly used in a dispensing machine or the like.
（従来技術およびその技術的課題）
分注機などに用いるピペツトは、その被検体の
吸入部を極めて小径（空気などと置換されること
がない程度）にしなければならない。これを硝子
で作る場合には、硝子管の一部をガス焔で加熱し
て、延伸すれば製作できるが、合成樹脂などで作
る場合、インジエクシヨン成形では、上記小径の
部分を長く作ることができない。しかし、微量に
分注精度を高めるという意図があるために、でき
るだけ、小径の部分は長く形成されることが望ま
れている。(Prior Art and its Technical Problems) A pipette used in a pipetting machine or the like must have an extremely small diameter suction part for the sample (to the extent that it will not be replaced by air, etc.). If this is made of glass, it can be made by heating a part of the glass tube with a gas flame and stretching it, but if it is made of synthetic resin, injection molding cannot be used to make the small diameter part long. . However, since the intention is to improve the precision of dispensing small amounts, it is desired that the small diameter portion be formed as long as possible.
（発明の目的）
本発明は上記事情にもとづいてなされたもの
で、合成樹脂製のチユーブから、局部的に異径部
を有する管状体を容易に製造する方法を提供しよ
うとするものである。(Objective of the Invention) The present invention has been made based on the above circumstances, and it is an object of the present invention to provide a method for easily manufacturing a tubular body having locally different diameter portions from a tube made of synthetic resin.
（発明の技術的構成）
この目的のため、本発明は合成樹脂製のチユー
ブを間欠送りする工程と、上記チユーブの所定個
所を加温し、局部的に可塑性を増大させる工程
と、上記チユーブに伸長力を加えて上記可塑性の
増大した局部を延伸し、小径化する工程と、上記
延伸加工部位を基準として規則性を持つた切断を
繰返す切断工程とを具備することを特徴とするも
のである。(Technical configuration of the invention) For this purpose, the present invention includes a step of intermittently feeding a tube made of synthetic resin, a step of heating a predetermined part of the tube to locally increase plasticity, and a step of feeding the tube made of synthetic resin intermittently. It is characterized by comprising the steps of applying a stretching force to stretch the local area where the plasticity has increased to reduce the diameter, and a cutting process of repeating regular cutting based on the stretched area. .
（実施例）
以下、本発明の実施例を、図面を参照して具体
的に説明する。図において、符号１および１′は
前後一対のピンチロール対であり、ロールにはそ
こに通される合成樹脂製チユーブＡをうけ入れる
半円弧状の溝が形成されている。上記合成樹脂製
チユーブＡは、リール２に巻回されており、円弧
状に彎曲したガイド筒３内を通して上記ロール対
１へと送られるようになつている。上記ロール対
１，１′の間には熱風を上記チユーブＡに与える
熱風供給機構４が装備されており、ロール対１′
の後には、ガイド筒５があり、その後に剪断カツ
タ６が設けられている。また、上記剪断カツタ６
と並んで、チユーブクランプ手段７が装備されて
いる。(Example) Hereinafter, an example of the present invention will be specifically described with reference to the drawings. In the figure, reference numerals 1 and 1' denote a pair of front and rear pinch rolls, each of which has a semicircular groove for receiving a synthetic resin tube A passed therethrough. The synthetic resin tube A is wound around a reel 2, and is fed to the pair of rolls 1 through a guide tube 3 curved in an arc. A hot air supply mechanism 4 for supplying hot air to the tube A is installed between the pair of rolls 1 and 1', and the pair of rolls 1'
After that, there is a guide tube 5, followed by a shearing cutter 6. In addition, the shear cutter 6
Alongside, tube clamping means 7 are provided.
このような構成において、上記ロール対１およ
び１′にチユーブＡの送り信号が与えられ、それ
ぞれ、異つた周速V1およびV1′（V1＜V1′）で上記
ロール対１および１′が送り動作をする。この時、
チユーブＡは、ロール対１による送りL1うける
が、ロール対１および１′の間では、引張力をう
ける。送り動作の前・後では、熱風供給機構４の
働きで、チユーブＡの局部A′はその可塑性を増
大するように加温されるので、ロール対１および
１′の送り動作の時、ロール対１および１′間で働
く引張力により、上記局部A′は延伸される。こ
のようにして局部的に異径部（小径部）が形成さ
れたチユーブＡはガイド筒５を介して剪断カツタ
６の位置に送り出される。こゝではチユーブクラ
ンプ手段７がチユーブＡの胴部Ｂをクランプし、
カツタ６が異径部、即ち、局部A′の所定個所で
切断を行なう。なお、こゝには、補助カツタ８が
用意されていて、胴部Ｂの所定個所に対して切断
を行なう。 In such a configuration, the tube A feeding signal is applied to the roll pairs 1 and 1', and the roll pairs 1 and 1 are fed at different circumferential velocities V 1 and V 1 ' (V 1 <V 1 '), respectively. ′ performs the feeding operation. At this time,
Tube A is subjected to a feed L 1 by roll pair 1, but is subjected to a tensile force between roll pairs 1 and 1'. Before and after the feeding operation, the hot air supply mechanism 4 heats the local area A' of the tube A to increase its plasticity. Due to the tensile force acting between 1 and 1', the local area A' is stretched. The tube A having the locally different diameter portion (small diameter portion) formed in this way is sent out to the position of the shear cutter 6 via the guide cylinder 5. Here, the tube clamping means 7 clamps the body B of the tube A,
The cutter 6 cuts at a predetermined location of the different diameter portion, that is, the local portion A'. Note that an auxiliary cutter 8 is provided here, and cuts the body B at a predetermined location.
かくして、異径部を有する管状体は、第３図ａ
にみられるように寸法Ltで構成され、残切片は
捨てられる。なおLt＝L′／２（こゝではL′一回の
送りＬの時、延伸によつてＬ＜L′でロール対１′
により送り出されるチユーブ長さ）であり、補助
カツタ８が胴部Ｂの中間で切断作用する場合、管
状体は同時に２個、形成され、残切片のような無
駄はなくなる。 Thus, the tubular body having different diameter portions is shown in FIG. 3a.
As shown in , it is constructed with dimension Lt, and the remaining sections are discarded. Note that Lt=L'/2 (Here, when L' is fed once, L<L' and roll pair 1' due to stretching.
When the auxiliary cutter 8 cuts at the middle of the body B, two tubular bodies are formed at the same time, and there is no waste such as residual sections.
なお、上記実施例では、合成樹脂製ピペツトを
製造する場合について述べたが、第３図ｂや、第
３図ｃにみられるような形状の管状体を構成する
場合にも、本発明の技術は適用できること勿論で
ある。 In the above embodiment, a case was described in which a pipette made of synthetic resin was manufactured. However, the technology of the present invention can also be applied when constructing a tubular body having a shape as shown in FIG. 3b or 3c. Of course, it can be applied.
また、熱風供給機構４の形をかえて、チユーブ
Ａに対する加温個所を２個所以上とし、第３図ｄ
のような構成の管状体を形成するようにしてもよ
いこと勿論である。 In addition, the shape of the hot air supply mechanism 4 is changed so that the tube A is heated at two or more locations, as shown in Fig. 3d.
Of course, it is also possible to form a tubular body having the following configuration.
本発明は、以上詳述したように、管状体の一部
を加温し、そこを延伸して、局部的にくびれた部
分を作り、これを適当に切断することで、異径部
を有する管状体を製造するようにしたので、異径
部が比較的長くかつ細く内径で作られ、用途目的
に充分適合できるなどの優れた効果が得られる。 As described in detail above, the present invention heats a part of the tubular body, stretches it to create a locally constricted part, and cuts this appropriately to form a part with a different diameter. Since the tubular body is manufactured, the different diameter portion can be made with a relatively long and narrow inner diameter, and excellent effects such as being fully compatible with the purpose of use can be obtained.
第１図は本発明の一実施例を示す概略構成図、
第２図は切断工程の部分を示す側面図、第３図ａ
ないしｄは構成された管状体の形状例を示す側面
図である。
１，１′……ロール対、Ａ……チユーブ、２…
…リール、A′……局部、３……ガイド筒、Ｂ…
…胴部、４……熱風供給機構、５……ガイド筒、
６……剪断カツタ、７……チユーブクランプ手
段、８……補助カツタ。
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Figure 2 is a side view showing the cutting process, Figure 3a
1 to 3 are side views showing an example of the shape of the constructed tubular body. 1,1'...roll pair, A...tube, 2...
...Reel, A'... Local area, 3... Guide tube, B...
... body part, 4 ... hot air supply mechanism, 5 ... guide tube,
6... Shear cutter, 7... Tube clamp means, 8... Auxiliary cutter.
Claims (1)
と、上記チユーブの所定個所を加温し、局部的に
可塑性を増大させる工程と、上記チユーブに伸長
力を加えて上記可塑性の増大した局部を延伸し、
小径化する工程と、上記延伸加工部位を基準とし
て規則性を持つた切断を繰返す切断工程とを具備
することを特徴とする異径部を有する管状体の製
造方法。1. A step of intermittently feeding a tube made of synthetic resin, a step of heating a predetermined part of the tube to locally increase the plasticity, and a step of applying a stretching force to the tube to stretch the localized portion where the plasticity has increased. ,
A method for producing a tubular body having a different diameter portion, the method comprising: a step of reducing the diameter; and a cutting step of repeatedly cutting with regularity based on the stretching region.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15786984A JPS6135236A (en) | 1984-07-27 | 1984-07-27 | Manufacture of tubular material having different diameter part |
| US06/675,350 US4728501A (en) | 1984-07-27 | 1984-11-27 | Adjustable liquid sampling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15786984A JPS6135236A (en) | 1984-07-27 | 1984-07-27 | Manufacture of tubular material having different diameter part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6135236A JPS6135236A (en) | 1986-02-19 |
| JPH0377772B2 true JPH0377772B2 (en) | 1991-12-11 |
Family
ID=15659181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15786984A Granted JPS6135236A (en) | 1984-07-27 | 1984-07-27 | Manufacture of tubular material having different diameter part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6135236A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2583144C (en) * | 1996-11-15 | 2009-03-10 | Bristol Myers Squibb Company | Devices and methods for applying a mixture of two or more liquid components to form a biomaterial |
| CN102848557A (en) * | 2012-08-23 | 2013-01-02 | 浙江硕华医用塑料有限公司 | Blow molding die for Pasteur pipette |
-
1984
- 1984-07-27 JP JP15786984A patent/JPS6135236A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135236A (en) | 1986-02-19 |
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