WO2018157621A1 - 一种超薄热管自动二次除气定长机构 - Google Patents

一种超薄热管自动二次除气定长机构 Download PDF

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Publication number
WO2018157621A1
WO2018157621A1 PCT/CN2017/110900 CN2017110900W WO2018157621A1 WO 2018157621 A1 WO2018157621 A1 WO 2018157621A1 CN 2017110900 W CN2017110900 W CN 2017110900W WO 2018157621 A1 WO2018157621 A1 WO 2018157621A1
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Prior art keywords
clamping
heat pipe
cylinder
plate
bottom plate
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PCT/CN2017/110900
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English (en)
French (fr)
Inventor
李勇
周文杰
何柏林
黄光文
陈创新
陈韩荫
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华南理工大学
广东新创意科技有限公司
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Application filed by 华南理工大学, 广东新创意科技有限公司 filed Critical 华南理工大学
Priority to SG11201900145SA priority Critical patent/SG11201900145SA/en
Priority to US16/318,445 priority patent/US11293699B2/en
Publication of WO2018157621A1 publication Critical patent/WO2018157621A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0258—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with means to remove contaminants, e.g. getters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0283—Means for filling or sealing heat pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49353—Heat pipe device making

Definitions

  • the invention belongs to the technical field of mechanical manufacturing, and relates to a mobile phone heat pipe processing device, in particular to an ultra-thin heat pipe automatic secondary degassing fixed length mechanism.
  • the ultra-thin heat pipe for heat dissipation has the advantages of high thermal conductivity (up to several hundred times to hundreds of times of common metal), good temperature uniformity, high reliability, no need for extra energy drive, etc. Therefore, the ultra-thin heat pipe is applied to the heat dissipation of the smartphone. It can effectively solve the problem of high temperature rise of smartphones and local "hot spots".
  • the ultra-thin heat pipe used in the smartphone (the overall thickness is 0.30 to 0.60 mm) is obtained by a flat-walled heat pipe by a flattening process.
  • the wall of the thin-walled heat pipe is very thin, and the thickness is only 0.05-0.15mm.
  • the pipe body is annealed soft. State, the mechanical strength is greatly reduced, and it is more prone to deformation or depression.
  • the object of the present invention is to provide an ultra-thin heat pipe automatic secondary degassing fixed length mechanism with simple structure, high efficiency and stability, which is respectively equipped with an automatic lifting device, an automatic clamping device and a length positioning extension device for different lengths.
  • the thin-walled heat pipe is automatically clamped, and after the deformation caused by the downward component force is released, the secondary degassing process is performed to solve the above-mentioned problems existing in the existing ultra-thin heat pipe processing.
  • the technical solution adopted by the present invention is an ultra-thin heat pipe automatic secondary degassing fixed length mechanism, which is characterized in that it comprises an automatic lifting device A installed on a length adjusting sliding table, an automatic clamping device B, and a length positioning extension.
  • the automatic lifting device A is composed of a lifting cylinder base, a lifting cylinder, a lifting cylinder connecting plate, a supporting plate and a reference bottom plate; an internal lifting cylinder mounted on the lifting cylinder base of the length adjusting sliding table, and a piston pushing plate of the lifting cylinder
  • the upper lifting cylinder connecting plate is vertically fixedly mounted with two supporting plates, and the reference bottom plate is fixedly mounted on the two vertically mounted supporting plates;
  • the automatic clamping device B is respectively composed of a bakelite mounting plate, a bakelite seat, a heating block, a clamping cylinder fixing plate, a clamping cylinder mounting plate, a clamping cylinder, a linear guide pair, a clamping push plate, and a clamp.
  • the compact block, the linear guide mounting plate and the heating block mounting seat are composed; the plurality of sets of electric wooden seat mounting plates equally arranged, and the two clamping cylinder fixing plates and the two linear guide mounting plates symmetrically disposed are locked on the reference bottom plate Upper, each electric wood seat fixed on the bakelite mounting plate is inserted into the heating block through the heating block mounting seat; the two clamping cylinders are connected to the clamping cylinder fixing plate via the vertically mounted clamping cylinder mounting plate, respectively a linear guide pair fixed on two linear guide mounting plates, consisting of a slider and a guide rail, and a clamping push plate with a clamping block at a fixed front end;
  • the length positioning extension device C is composed of a floating joint bottom plate, a floating bottom plate, and an extended gas
  • the cylinder, the cylinder floating joint and the fixed length shaft are composed; the extension cylinder is fixed on the reference bottom plate surface; the floating bottom plate on the floating joint bottom plate is connected through the cylinder floating joint; the floating bottom plate is provided with corresponding automatic clamping device B Long axis.
  • the two vertical optical holes provided in the heating block mounting seat of the automatic clamping device B are inserted into the heating rods.
  • the mounting hole fixedly connected to the reference base plate, the bakelite base and the bakelite mounting plate is a waist stepped hole.
  • the heating block holding port portion is provided with a groove for holding the thin-walled heat pipe.
  • the clamping end of the clamping block of the automatic clamping device B is provided with a jacket sleeve which is a soft high temperature resistant material.
  • the length positioning extension device C is provided with two sets of guide shafts on the floating bottom plate connected to the cylinder, and the oil-free bushing mounted on the reference bottom plate is slidably connected with the reference bottom plate. Guide the downward movement of the cylinder float joint.
  • the invention discloses an ultra-thin heat pipe automatic secondary degassing fixed length mechanism, which is suitable for secondary degassing and fixed length processing of heat pipes of different lengths, and is especially suitable for processing by thin-walled heat pipe (wall thickness of 0.05-0.15 mm) by crushing process
  • the ultra-thin heat pipe has advanced structure design, stable and high-efficiency production, and realizes the dimensional positioning and automatic clamping of the thin-wall heat pipe in the secondary degassing and fixed length process through the automatic lifting device A automatic clamping device B;
  • the length positioning extension device C releases the downward component force generated during the sealing process of the mold, thereby avoiding deformation or partial depression such as bending or partial depression of the thin-wall heat pipe body during the secondary degassing and long-length processing, so that the product is qualified.
  • the rate and the economic benefits of the company have greatly improved.
  • 1 is a schematic view showing the force analysis of the fixed length processing of the existing ultra-thin heat pipe secondary degassing fixed length mechanism
  • FIGS. 2 and 3 are schematic views showing the structure of an automatic secondary degassing fixed length mechanism of the ultra-thin heat pipe of the present invention
  • FIGS. 4 and 5 are schematic structural views of the automatic clamping device of the present invention.
  • FIG. 5 and FIG. 6 are schematic structural views of a length positioning and extension device according to the present invention.
  • FIG. 7 is a schematic top plan view of an ultra-thin heat pipe automatic secondary degassing fixed length mechanism according to the present invention.
  • Figure 8 is a partial cross-sectional structural view of the length positioning and extension device of the present invention.
  • An ultra-thin heat pipe automatic secondary degassing fixed length mechanism as shown in FIG. 2 and FIG. 3, comprising an automatic lifting device A, an automatic clamping device B, a length positioning extension device C and a PLC installed on the length adjusting sliding table
  • the automatic lifting device A is composed of a lifting cylinder base 1, a lifting cylinder 2, a lifting cylinder connecting plate 3, a supporting plate 4, and a reference bottom plate 5; the lifting cylinder base 1 attached to the length adjusting sliding table is locked with an inherent lifting cylinder 2, lifting The piston push plate of the cylinder 2 is vertically fixedly mounted with two support plates 4 via a lifting cylinder connecting plate 3, and the reference bottom plate 5 is fixedly mounted above the two vertically mounted support plates 4.
  • the automatic clamping device B of the present invention is respectively provided by a bakelite mounting plate 6, a bakelite block 7, a heating block 8, a clamping cylinder fixing plate 12, a clamping cylinder mounting plate 13, The clamping cylinder 14, the linear guide pair 16, the clamping push plate 17, the clamping block 18, the linear guide mounting plate 22, and the heating block mounting seat 23; the plurality of sets of electric wooden mounting plates 6 equally arranged, and the symmetry
  • the two clamping cylinder fixing plates 12 and the two linear guide mounting plates 22 are fixed on the reference bottom plate 5, and the bakelite blocks 7 fixed to the bakelite mounting plate 6 are inserted into the heating block through the heating block mounting seat 23.
  • the two clamping cylinders 14 are connected to the clamping cylinder fixing plate 12 via the vertically mounted clamping cylinder mounting plate 13 and are respectively fixed on the two linear guide mounting plates 22,
  • a linear guide pair 16 composed of a slider and a guide rail is connected to the clamp push plate 17 on which the clamp head 18 is mounted at the fixed front end, and the clamp end of the clamp block 18 is provided with a clamp sleeve 19 which is a soft high temperature resistant material.
  • the mounting hole of the bakelite mounting plate 6 of the automatic clamping device B of the present invention and the reference bottom plate 5 is a waist-shaped stepped hole. As shown in FIG. 7, the bakelite mounting plate 6 can be along the waist hole of the reference bottom plate 5.
  • the groove is slid left and right to realize the adjustment of the left and right direction of the automatic clamping device B; the mounting hole fixedly connected to the bakelite mounting plate 6 is also a waist-shaped stepped hole, so that the bakelite seat 7 can be mounted along the bakelite seat
  • the waist groove of the 6 is slipped back and forth to realize the adjustment of the front and rear direction of the automatic clamping device B; the thin wall heat pipe can smoothly realize the guiding hole of the concave die entering the sealing area.
  • the length positioning extension device C of the present invention is composed of a floating joint bottom plate 10, a floating bottom plate 11, an extension cylinder 15, a cylinder floating joint 20, and a fixed length shaft 21; the extension cylinder 15 is fixed to the reference bottom plate. 5, the floating bottom plate 11 on the floating joint bottom plate 10 is connected by the cylinder floating joint 20; the floating bottom plate 11 is provided with a fixed length shaft 21 corresponding to each automatic clamping device B.
  • the lower end of the fixed length shaft 21 is machined with an external thread, and is vertically locked on the floating bottom plate 11 by the external thread of the lower end head, and the upper end of the fixed length shaft 21 is a plane, when the heat pipe is vertically inserted between the heating block 8 and the pinch sleeve 19 In the case of a gap, the plane is the positioning surface at the bottom of the heat pipe.
  • the extension cylinder 15 expands and moves the floating bottom plate 11 up and down by the expansion and contraction of the piston rod, thereby driving the fixed length shaft 21 to move up and down.
  • the two vertical optical holes provided in the heating block mounting seat 23 of the automatic clamping device B are inserted into the heating rods 26; the length positioning and extending device C
  • the floating bottom plate 11 to which the extension cylinder 15 is connected is provided with two sets of guide shafts 25 which are slidably connected to the reference base plate 5 via the oil-free bushing 24 mounted on the reference base plate 5. Guide the downward movement of the cylinder floating joint 20.
  • the position of the slide adjusting table in the vertical direction is adjusted according to the length of the thin-wall heat pipe 9 to be processed, and the thin-walled heat pipe 9 is removed from the lifting cylinder 2 of the automatic lifting device A.
  • the loading area is sent to the sealing area.
  • a suitable heating block 8 is selected, and after the assembly is adjusted, the automatic clamping device B is inserted.
  • the automatic clamping device B is mounted on the clamping cylinder mounting plate 13 to act on the two clamping cylinders 14, the piston rod is extended, and the connecting fixed front end is provided with the clamping block 18
  • the clamping push plate 17 is moved forward along the linear guide pair 16 on the two linear guide mounting plates 22, and the clamping sleeve 19 at the clamping end of the clamping block 18 is closed and clamped with the heating block 8 on each of the bony blocks 7.
  • the processed thin-walled heat pipe 9 is retrieved and completed from one working cycle. Since the automatic clamping device B is a flexible clamping heat pipe, when the thin-walled heat pipe 9 is loaded, the piston rod of the extension cylinder 15 is in a retracted state, the bottom surface of the heat pipe contacts the upper surface of the fixed length shaft 21, and the fixed length shaft 21 is a thin-walled heat pipe 9 The positioning and support in the vertical direction are provided; before the sealing operation of the thin-walled heat pipe 9 is performed, the extension cylinder 15 is operated according to the PLC control command, the piston rod is in the extended state, and the fixed length shaft 21 is moved downward, and the fixed length shaft The upper end plane of the 21 leaves the bottom of the thin-walled heat pipe 9.
  • the fixed length shaft 21 of the length positioning extension C does not contact the bottom of the thin-walled heat pipe 9, and the thin-walled heat pipe 9 can freely extend in the vertical direction, so The effect of the downward component force generated by the extrusion of the heat pipe by the die is offset, and the bending deformation and partial depression during the secondary degassing process of the thin-wall heat pipe 9 are avoided.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
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Abstract

一种超薄热管自动二次除气定长机构，包括安装在长度调整滑台上的自动升降装置A、自动夹紧装置B、长度定位延伸装置C和PLC。该机构通过自动升降装置A、自动夹紧装置B，分别实现了热管在二次除气定长工序中的尺寸定位、自动夹紧；通过长度定位延伸装置C将薄壁热管在模具封口过程中受到向下的分力予以释放，避免了在二次除气定长加工过程中薄壁热管管身出现的弯曲或局部凹陷等形变。

Description

一种超薄热管自动二次除气定长机构 技术领域
本发明属于机械制造技术领域，涉及一种手机热管加工设备，具体涉及一种超薄热管自动二次除气定长机构。
背景技术
随着互联网技术和电子技术的迅速发展，智能手机性能日益强劲，因此由设备运行带来的手机散热问题也越来越突出。用于散热的超薄热管具有导热系数高(可达普通金属的几十倍至上百倍)、均温性好、可靠性高、无需额外能量驱动等优点，所以，超薄热管应用于智能手机散热，能有效解决智能手机温升过高，局部“热点”的散热难题。
智能手机中所使用的超薄热管(整体厚度为0.30～0.60mm)，是由薄壁热管经压扁工艺制得的。薄壁热管管壁非常薄，厚度仅为0.05～0.15mm；但加工工序多，加工过程中极易产生变形或凹陷，尤其在超薄热管二次除气工序中，此时管身为退火软态，机械强度大大降低，更容易出现变形或凹陷。二次除气工序中，热管竖直安装，热管底部由夹具夹紧并加热，热管顶部由模具封口并切断，利用沸腾排气原理去除热管内部的不凝性气体，进一步提高热管内部真空度。中国专利申请201110446349.4公开了“一种超薄热管二次除气定长机构”，中国专利申请201410856094.2和201210177860.3，分别公开了“一种全自动热管除气封口装置”和“一种热管除气定长封口加工装置”，这几种装置中热管底部均为刚性支撑，不适宜加工薄壁热管，因为在模具封口过程中，薄壁热管会受到向下的分力，如图1所示的A处，在向下分力的作用下，薄壁热管管身会产生弯曲形变，同时图1所示的B处会产生凹陷形变。利用现有技术，常规热管二次除气加工过程中不会出现明显的局部凹陷， 因为常规热管壁厚在0.20mm以上，强度较高；而以壁厚为0.05～0.15mm的薄壁热管制作超薄热管时，薄壁热管在二次除气加工过程中，薄壁热管管身极易出现局部凹陷；同时夹紧机构也容易将其夹扁，致使不良品率大大增加。
发明内容
本发明的目的是针对上述问题，提供一种结构简单、高效稳定的超薄热管自动二次除气定长机构，它分别通过自动升降装置、自动夹紧装置、长度定位延伸装置，对不同长度的薄壁热管实施自动夹紧，在释放向下分力造成的形变后，再进行二次除气加工，解决了现有超薄热管加工中存在的上述问题。
本发明所采用的技术方案是，一种超薄热管自动二次除气定长机构，其特征在于，包括安装在长度调整滑台上的自动升降装置A、自动夹紧装置B、长度定位延伸装置C和PLC；
所述的自动升降装置A，由升降气缸底座、升降气缸、升降气缸连接板、支撑板、基准底板组成；安装于长度调整滑台的升降气缸底座上锁固有升降气缸，升降气缸的活塞推板上经升降气缸连接板，垂直固定安装两块支撑板，基准底板安装固定于两块垂直安装的支撑板上方；
所述的自动夹紧装置B，分别由电木座安装板、电木座、加热块、夹紧气缸固定板、夹紧气缸安装板、夹紧气缸、直线导轨副、夹紧推板、夹紧块、直线导轨安装板、加热块安装座组成；所述均等布设的若干套电木座安装板，以及对称设置的两块夹紧气缸固定板和两块直线导轨安装板锁固在基准底板上，固定在电木座安装板的各电木座通过加热块安装座插接加热块；所述的两夹紧气缸经竖直安装的夹紧气缸安装板与夹紧气缸固定板连接，分别固定在两块直线导轨安装板上、由滑块和导轨组成的直线导轨副，连接固定前端装有夹紧块的夹紧推板；
所述的长度定位延伸装置C，由浮动接头底板、浮动底板、延伸气 缸、气缸浮动接头、定长轴组成；延伸气缸固定在基准底板板面上；通过气缸浮动接头连接浮动接头底板上的浮动底板；所述浮动底板上设有对应各自动夹紧装置B的定长轴。
本发明所述的超薄热管自动二次除气定长机构，其特还在于，
所述自动夹紧装置B电木座中插装的加热块安装座内设有的两个竖直光孔插装有加热棒。
所述电木座安装板与基准底板、电木座与电木座安装板连接固定的安装孔为腰形阶梯孔。
所述加热块夹持口部位设有夹持薄壁热管的凹槽。
所述自动夹紧装置B夹紧块的夹紧端装有为软质耐高温材料的夹管套。
所述长度定位延伸装置C延伸气缸连接的浮动底板上设有两组导向轴，经基准底板上安装的无油衬套与基准底板滑动连接。为气缸浮动接头向下运动作导向。
本发明超薄热管自动二次除气定长机构，适用于不同长度热管的二次除气定长加工，尤其适用于加工由薄壁热管(壁厚为0.05～0.15mm)经压扁工艺制得的超薄热管，其结构设计先进，生产稳定高效，通过自动升降装置A自动夹紧装置B，分别实现了薄壁热管在二次除气定长工序中的尺寸定位、自动夹紧；通过长度定位延伸装置C将在模具封口过程中产生的向下分力予以释放，避免了在二次除气定长加工过程中薄壁热管管身出现的弯曲或局部凹陷等形变，使产品的合格率和企业的经济效益大大提高。
附图说明
图1是现有超薄热管二次除气定长机构定长加工受力分析示意图；
图2、图3是本发明超薄热管自动二次除气定长机构结构示意图；
图4、图5是本发明自动夹紧装置结构示意图；
图5、图6是本发明长度定位延伸装置结构示意图；
图7是本发明超薄热管自动二次除气定长机构俯视结构示意图；
图8是本发明长度定位延伸装置局部剖视结构示意图。
图中，1.升降气缸底座，2.升降气缸，3.升降气缸连接板，4.支撑板，5.基准底板，6.电木座安装板，7.电木座，8.加热块，9.薄壁热管，10.浮动接头底板，11.浮动底板，12.夹紧气缸固定板，13.夹紧气缸安装板，14.夹紧气缸，15.延伸气缸，16.直线导轨副，17.夹紧推板，18.夹紧块，19.夹管套，20.气缸浮动接头，21.定长轴，22.直线导轨安装板，23.加热块安装座，24.无油衬套，25.导向轴，26.加热棒。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细说明。
一种超薄热管自动二次除气定长机构，如图2和图3所示，包括安装在长度调整滑台上的自动升降装置A、自动夹紧装置B、长度定位延伸装置C和PLC；自动升降装置A，由升降气缸底座1、升降气缸2、升降气缸连接板3、支撑板4、基准底板5组成；安装于长度调整滑台的升降气缸底座1上锁固有升降气缸2，升降气缸2的活塞推板上经升降气缸连接板3，垂直固定安装两块支撑板4，基准底板5安装固定于两块垂直安装的支撑板4上方。
本发明的自动夹紧装置B，如图4和图5所示，分别由电木座安装板6、电木座7、加热块8、夹紧气缸固定板12、夹紧气缸安装板13、夹紧气缸14、直线导轨副16、夹紧推板17、夹紧块18、直线导轨安装板22、加热块安装座23组成；所述均等布设的若干套电木座安装板6，以及对称设置的两块夹紧气缸固定板12和两块直线导轨安装板22锁固在基准底板5上，固定在电木座安装板6的各电木座7通过加热块安装座23插接加热块8；所述的两夹紧气缸14经竖直安装的夹紧气缸安装板13与夹紧气缸固定板12连接，分别固定在两块直线导轨安装板22上、 由滑块和导轨组成的直线导轨副16，连接固定前端装有夹紧块18的夹紧推板17，夹紧块18的夹紧端装有为软质耐高温材料的夹管套19。
本发明自动夹紧装置B的电木座安装板6与基准底板5连接固定的安装孔为腰形阶梯孔，如图7所示，电木座安装板6可以沿基准底板5的腰形孔槽左右滑移，实现自动夹紧装置B左右方向的调整；电木座7与电木座安装板6连接固定的安装孔也是腰形阶梯孔，这样电木座7可以沿电木座安装板6的腰形孔槽前后滑移，实现自动夹紧装置B前后方向的调整；使薄壁热管能顺利实现进入封口区凹模的导向孔。
本发明的长度定位延伸装置C，如图5和图6所示，由浮动接头底板10、浮动底板11、延伸气缸15、气缸浮动接头20、定长轴21组成；延伸气缸15固定在基准底板5板面上；通过气缸浮动接头20连接浮动接头底板10上的浮动底板11；所述浮动底板11上设有对应各自动夹紧装置B的定长轴21。定长轴21下端加工有外螺纹，通过下端头的外螺纹垂直锁紧在浮动底板11上，定长轴21上端头为一平面，当热管竖直插入加热块8与夹管套19之间空隙时，该处平面为热管底部的定位面。装夹完毕后，延伸气缸15通过其活塞杆伸缩提升浮动底板11上下移动，从而带动定长轴21上下运动。
如图7和图8所示，自动夹紧装置B电木座7中插装的加热块安装座23内设有的两个竖直光孔，插装有加热棒26；长度定位延伸装置C延伸气缸15连接的浮动底板11上设有两组导向轴25，经基准底板5上安装的无油衬套24，与基准底板5滑动连接。为气缸浮动接头20向下运动作导向。
本发明在实际生产操作时，需要先跟据待加工薄壁热管9的长度来调整长度调整滑台在竖直方向所处的位置，通过自动升降装置A的升降气缸2将薄壁热管9从装取区送入封口区。然后根据薄壁热管9的直径选取合适的加热块8，装配调整完毕后，再在各个自动夹紧装置B中插 入薄壁热管9；按照PLC程序指令控制，自动夹紧装置B安装在夹紧气缸安装板13上的两夹紧气缸14动作，活塞杆伸出，带动连接固定前端装有夹紧块18的夹紧推板17沿两块直线导轨安装板22上的直线导轨副16向前移动，通过夹紧块18夹紧端的夹管套19与各电木座7上的加热块8闭合夹紧薄壁热管9；自动升降装置A动作，升降气缸2活塞杆伸出将薄壁热管9抬升送入封口区，长度定位延伸装置C动作，延伸气缸15活塞杆向下伸出，让定长轴21的上端平面脱离薄壁热管9底部，使热管底部悬空；封口模具动作，凹凸模闭合挤压薄壁热管9的缩径末端形成冷焊密封区；切断机构动作，沿冷焊密封区的上方末端切断薄壁热管9；封口切断完毕后，自动升降装置A复位，升降气缸2活塞杆退回，薄壁热管9返回到装取区；长度定位延伸装置C复位，延伸气缸15活塞杆带动定长轴21活塞杆退回，定长轴21的上端平面接触热管底部；自动夹紧装置B复位，夹紧气缸14活塞杆退回，加热块8与夹紧块18的夹管套19脱离，松开薄壁热管9，取回加工完毕的薄壁热管9，自此一个工作循环完成。由于自动夹紧装置B为柔性夹紧热管，在装取薄壁热管9时，延伸气缸15活塞杆为退回状态，热管底面接触定长轴21的上表面，定长轴21为薄壁热管9提供了竖直方向的定位和支撑；在薄壁热管9夹紧后进行封口动作之前，延伸气缸15按PLC控制指令动作，活塞杆为伸出状态，定长轴21向下运动，定长轴21的上端头平面离开薄壁热管9底部，在实际封口时，长度定位延伸装置C中定长轴21与薄壁热管9底部不接触，薄壁热管9可以于竖直方向自由延伸，因此就抵消了封口时模具挤压热管所产生向下分力的影响，避免了薄壁热管9管身二次除气加工过程中的弯曲变形和局部凹陷。
上述实施方式只是本发明的一个实例，不是用来限制发明的实施与权利范围，凡依据本发明申请专利保护范围所述的内容做出的等效变化和修饰，均应包括在本发明申请专利范围内。

Claims (6)

  1. 一种超薄热管自动二次除气定长机构，其特征在于，包括安装在长度调整滑台上的自动升降装置A、自动夹紧装置B、长度定位延伸装置C和PLC；
    所述的自动升降装置A，由升降气缸底座(1)、升降气缸(2)、升降气缸连接板(3)、支撑板(4)、基准底板(5)组成；安装于长度调整滑台的升降气缸底座(1)上锁固有升降气缸(2)，升降气缸(2)的活塞推板上经升降气缸连接板(3)，垂直固定安装两块支撑板(4)，基准底板(5)安装固定于两块垂直安装的支撑板(4)上方；
    所述的自动夹紧装置B，分别由电木座安装板(6)、电木座(7)、加热块(8)、夹紧气缸固定板(12)、夹紧气缸安装板(13)、夹紧气缸(14)、直线导轨副(16)、夹紧推板(17)、夹紧块(18)、直线导轨安装板(22)、加热块安装座(23)组成；所述均等布设的若干套电木座安装板(6)，以及对称设置的两块夹紧气缸固定板(12)和两块直线导轨安装板(22)锁固在基准底板(5)上，固定在电木座安装板(6)的各电木座(7)通过加热块安装座(23)插接加热块(8)；所述的两夹紧气缸(14)经竖直安装的夹紧气缸安装板(13)与夹紧气缸固定板(12)连接，分别固定在两块直线导轨安装板(22)上、由滑块和导轨组成的直线导轨副(16)，连接固定前端装有夹紧块(18)的夹紧推板(17)；
    所述的长度定位延伸装置C，由浮动接头底板(10)、浮动底板(11)、延伸气缸(15)、气缸浮动接头(20)、定长轴(21)组成；延伸气缸(15)固定在基准底板(5)板面上；通过气缸浮动接头(20)连接浮动接头底板(10)上的浮动底板(11)；所述浮动底板(11)上设有对应各自动夹紧装置B的定长轴(21)。
  2. 根据权利要求1所述的超薄热管自动二次除气定长机构，其特征在于，所述自动夹紧装置B电木座(7)中插装的加热块安装座(23)内设有的两个竖直光孔插装有加热棒(26)。
  3. 根据权利要求1所述的超薄热管自动二次除气定长机构，其特征在于，所述电木座安装板(6)与基准底板(5)、电木座(7)与电木座安装板(6)连接固定的安装孔为腰形阶梯孔。
  4. 根据权利要求1所述的超薄热管自动二次除气定长机构，其特征在于，所述加热块(8)夹持口部位设有夹持薄壁热管的凹槽。
  5. 根据权利要求1所述的超薄热管自动二次除气定长机构，其特征在于，所述自动夹紧装置B夹紧块(18)的夹紧端装有为软质耐高温材料的夹管套(19)。
  6. 根据权利要求1所述的超薄热管自动二次除气定长机构，其特征在于，所述长度定位延伸装置C延伸气缸(15)连接的浮动底板(11)上设有两组导向轴(25)，经基准底板(5)上安装的无油衬套(24)，与基准底板(5)滑动连接。为气缸浮动接头(20)向下运动作导向。
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