• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A device for expanding thermal shrink tube due to double vacuum is provided to reduce failure ratio, to enhance productivity and cooling efficiency by reducing the friction between a lower expansion tube and a tube. CONSTITUTION: A device for expanding thermal shrink tube due to double vacuum comprises upper and lower vacuum chambers(200,300), an inner cover(104) between the chambers(200,300), an upper expansion tube(102), a lower expansion tube(107), vacuum gauges(211,311) and vacuum control valves(212,312) mounted on respective sides of the chambers(200,300), nipples(210,310) for spraying cooling water on bottom of the chambers(200,300).
    公开号:KR20000027808A
    申请号:KR1019980045837
    申请日:1998-10-29
    公开日:2000-05-15
    发明作者:이태중
    申请人:권문구；엘지전선 주식회사；
    IPC主号:
    专利说明:

    Heat shrinkable tube expansion device by double vacuum
    The present invention relates to a heat-shrinkable tube expansion device, and more particularly, a heat-shrinkable tube expansion device with a double vacuum to increase the control efficiency to maintain a constant vacuum degree by separating the inside and the bottom of the vacuum chamber to control the vacuum degree respectively. It is about.
    Conventionally, as shown in FIG. 1, a single expansion tube 2 is installed in a vacuum chamber, and one vacuum pump (not shown), a vacuum gauge 3, a vacuum control valve 4, and a coolant injection nipple 5 are respectively provided. A thermoshrinkable tube having a desired diameter was manufactured by bringing the outside of the tube into a vacuum state so that the outer diameter of the heat-shrinkable tube heated and expanded to the inner diameter of the expansion tube was in close contact with the expansion device.
    However, as the outside air flows into the upper and lower portions of the expansion tube 2, the degree of vacuum in the expansion tube 2 is not uniform, resulting in an uneven outer diameter of the tube, resulting in a high defect rate of the product. Proper vacuum pressure control was not possible.
    In addition, the outer tube of the inflated tube and the inner surface of the inflating tube (2) should be pulled directly in a state in which the friction between the expansion tube (2) and the tube is severe, resulting in longitudinal stretching and longitudinal shrinkage of the heat shrinkable tube There is a problem that the dispersion of the variance is large, and because the indirect cooling method to cool the tube passing through the expansion tube (2) with the cooling water, the tube is cooled only by contact with the expansion tube (2), so the cooling power is not excellent. It was.
    SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a heat shrinkable tube expansion device which effectively eliminates the cause of failure of a heat shrinkable tube by effectively controlling the vacuum pressure in the vacuum chamber.
    Another object of the present invention is to reduce the friction between the expansion tube and the heating expansion tube, by spraying the coolant directly on the surface of the heating expansion tube to increase the cooling efficiency of the longitudinal shrinkage and longitudinal shrinkage of the heat shrinkable tube is small and the productivity is high It is an object to provide an improved heat shrinkable tube expansion device.
    The object of the present invention as described above is to separate the inside of the vacuum chamber into the upper and lower to control the degree of vacuum of the upper and lower, respectively, and the expanded tube and the expanded tube is separated through the expansion tube passes through the expansion tube This is accomplished by providing a heat shrinkable tube expansion device that is exposed to a vacuum chamber during the process to reduce friction between the expansion tube and the tube and spray coolant directly to the surface of the tube.
    The heat shrinkable tube expansion device according to the present invention has high control efficiency of the vacuum degree by separating the inside of the vacuum chamber into upper and lower portions, respectively, and by installing the upper expansion tube and the lower expansion tube separately, the friction between the expansion tube and the tube. The cooling efficiency is high because of the small and direct cooling method.
    1 is a cross-sectional view of a vacuum chamber of a conventional heat shrinkable tube expansion device,
    2 is a cross-sectional view of a vacuum chamber according to an embodiment of the present invention.
    Explanation of symbols on the main parts of the drawings
    102: upper expansion tube 104: inner cover
    107: lower expansion tube
    200: upper vacuum chamber
    210: cooling water injection nipple (NIPPLE)
    211: vacuum gauge
    212 vacuum control valve
    300: upper vacuum chamber
    310: coolant injection nipple
    311: vacuum gauge
    312 vacuum control valve
    Hereinafter, the present invention will be described in detail by the accompanying drawings.
    In the heat-shrinkable tube expansion device according to an embodiment of the present invention, as shown in FIG. 2, the vacuum chamber is separated into upper and lower portions, and an inner cover 104 is attached to the interface and the inner cover 104 is packed. After finishing with 105, the packing cover 106 is attached again.
    The upper expansion tube 102 penetrates the interface between the upper vacuum chamber 200 and the lower vacuum chamber 300 to protrude a portion in the lower vacuum chamber 300, and the lower expansion tube 107 is an upper expansion tube. Separated from the 102 and is installed to protrude to the bottom of the lower vacuum chamber (300). The packing 108 and the packing cover 109 having the same circular hole as the lower expansion pipe 107 are fixed to the lower end of the lower expansion pipe 107 by screwing.
    In addition, each side of the upper vacuum chamber 200 and the lower vacuum chamber 300 is provided with a vacuum gauge 211, 311, vacuum control valve 212 (312), a vacuum pump (not shown), respectively To control the degree of vacuum of the upper and lower portions of the vacuum chamber, respectively, and the nipples 210 and 310 for spraying the cooling water to the lower end of one side of the upper vacuum chamber 200 and the lower end of the lower vacuum chamber 300, respectively. It is installed.
    In the figure, reference numeral 101 denotes a Teflon adapter, and reference numeral 103 denotes a chamber cover.
    The present invention configured as described above can control the inside of the vacuum chamber by separating the upper and lower, respectively, to maintain a constant degree of vacuum and direct injection cooling is described as an expansion device having a high cooling efficiency as follows.
    Insert the heated tube into the upper expansion tube 120 and fixedly withdraw the caterpillar (not shown), and then operate the coolant injection nipple 210 to inject the coolant into the upper vacuum chamber 200 and vacuum pump Drive the cooling water injection nipple 310 in the lower vacuum chamber 300 and drive the vacuum pump. When the vacuum control valves 212 and 312 of the upper and lower vacuum chambers 200 and 300 are closed and the outlet of the lower expansion pipe 300 is closed with the packing 108, a vacuum force is generated. The tubes inserted into and inserted into the upper and lower expansion tubes 102 and 107 expand in the same manner as their expansion tube inner diameters.
    That is, the inside of the vacuum chamber is divided into a top and a bottom to configure a double vacuum chamber in which the degree of vacuum is controlled to expand the tube. At this time, the cooling water is injected into the upper expansion tube 102 at the same time as the expansion in the upper vacuum chamber 200. SIZING cooling is performed through the upper expansion tube 102, and in the lower vacuum chamber 300, the expanded tube is partially exposed to the cooling water, so that the cooling water is directly injected into the tube, thereby providing a dual cooling structure. Will be.
    When the tube is inflated, the upper and lower vacuum control valves 212 and 312 are controlled to adjust the amount of air introduced from the outside to maintain the optimum expansion conditions, wherein the outer diameter of the tube is not uniform or high vacuum Or in low vacuum, the upper and lower vacuum control valve is adjusted to maintain the optimum vacuum level.
    As described above, the heat shrinkable tube expansion device according to the present invention can efficiently control the degree of vacuum by separating the inside and the bottom of the vacuum chamber, respectively, so that the outer diameter of the heat shrinkable tube is uniformly manufactured.
    In addition, by separating the upper expansion tube and the lower expansion tube and installing the lower expansion tube so that only a portion of the lower expansion tube is exposed in the lower vacuum chamber, the friction between the lower expansion tube and the tube is reduced, resulting in longitudinal stretching and longitudinal contraction of the heat shrinkable tube. The smaller the deviation, the lower the defective rate of the product and the higher the productivity, and the direct cooling method in which a part of the tube is directly exposed to the coolant, so the cooling efficiency is high, the product quality is excellent.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] The inside of the vacuum chamber is separated into an upper part and a lower part, and an interface thereof is finished with the inner cover 104, and the upper expansion tube 102 passes through the interface to the lower vacuum chamber 300 through the upper vacuum chamber 200. It is installed, the lower expansion tube 107 protrudes at the lower end of the lower vacuum chamber 300, the vacuum gauge 211 connected to the vacuum pump on each side of the upper vacuum chamber 200 and the lower vacuum chamber 300 ( 311) and the vacuum control valves 212 and 312 are respectively installed so that the degree of vacuum of the upper and lower portions of the vacuum chamber can be controlled, respectively, and the lower side of one side of the upper vacuum chamber 200 and the lower side of the lower vacuum chamber 300. Nipples 210 and 310 are respectively installed to inject cooling water in the upper vacuum chamber 200, and sizing cooling for spraying cooling water into the upper expansion pipe 102 is performed in the upper vacuum chamber 200, and in the lower vacuum chamber 300. Tube is partially exposed to the coolant A heat shrinkable tube expansion device by double vacuum, characterized in that the jet cooling.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1998-10-29|Application filed by 권문구, 엘지전선 주식회사
    1998-10-29|Priority to KR1019980045837A
    1998-10-29|Priority claimed from KR1019980045837A
    2000-05-15|Publication of KR20000027808A
    2001-04-02|Application granted
    2001-04-02|Publication of KR100282197B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019980045837A|KR100282197B1|1998-10-29|Heat shrinkable tube expansion device by double vacuum|
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