Cutting and sealing method and device for ultra-thin heat pipe

Abstract

The present invention discloses a cutting and sealing method and device for an ultra-thin heat pipe, the method comprising the following steps: S1, providing a first positioning member and a second positioning member which are spaced apart and arranged oppositely, the first positioning member and the second positioning member are respectively provided with clamping surfaces facing opposite sides, and one of the clamping surfaces is provided with a cutting portion protruding toward the other clamping surface; S2, extending one end of the ultra-thin heat pipe between the first positioning member and the second positioning member, and adjusting the position of the ultra-thin heat pipe relative to the cutting portion; S3, driving at least one of the first positioning member and the second positioning member to move so that the two clamping surfaces are close to each other until the cutting portion cuts off the end of the ultra-thin heat pipe and the two clamping surfaces press the incision of the ultra-thin heat pipe; S4, sealing the incision. The cutting and sealing method for the ultra-thin heat pipe can effectively shorten the length of the invalid section and improve the utilization rate of the thermal conductivity area of ​​the ultra-thin heat pipe.

Description

Technical Field

[0001] The present invention belongs to the field of ultra-thin heat pipe preparation, and more specifically, relates to a cutting and sealing method for an ultra-thin heat pipe and a cutting and sealing device for an ultra-thin heat pipe. Background Art

[0002] Due to process reasons, the existing ultra-thin wall thickness heat-conducting copper tubes have ineffective sections of about 5mm-15mm at both ends of the tube body after being flattened, depending on the diameter of the tube. The only way to increase the effective utilization area of ​​the heat pipe is to increase the shrinking angle as much as possible to reduce the length of the ineffective section. However, increasing the shrinking angle to reduce the length of the ineffective section has the disadvantages of being inconvenient to operate, requiring high sealing technology, and having poor sealing effect. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, the present invention provides a cutting and sealing method for an ultra-thin heat pipe. The cutting and sealing method for an ultra-thin heat pipe has simple steps, is easy to operate, and can improve the utilization rate of the heat conduction area of ​​the heat pipe.

[0005] The present invention also provides a cutting and sealing device for an ultra-thin heat pipe, which has the advantages of being easy to operate and being able to effectively shorten the length of an ineffective section.

[0006] According to a method for cutting and sealing an ultra-thin heat pipe according to an embodiment of the first aspect of the present invention, the method comprises the following steps: S1, providing a first positioning member and a second positioning member which are spaced apart and arranged opposite to each other, wherein the first positioning member and the second positioning member are respectively provided with clamping surfaces facing opposite sides, and one of the clamping surfaces is provided with a cutting portion protruding toward the other clamping surface; S2, extending one end of the ultra-thin heat pipe between the first positioning member and the second positioning member, and adjusting the position of the ultra-thin heat pipe relative to the cutting portion; S3, driving at least one of the first positioning member and the second positioning member to move so that the two clamping surfaces approach each other until the cutting portion cuts off the end of the ultra-thin heat pipe and the two clamping surfaces press the incision of the ultra-thin heat pipe; S4, sealing the incision.

[0007] According to the cutting and sealing method of the ultra-thin heat pipe in the embodiment of the present invention, the end of the ultra-thin heat pipe is first cut, and the incision is quickly pressed and sealed during the cutting process. Then, the sealing effect is improved through further sealing treatment. Compared with the prior art, the method in the embodiment of the present invention can shorten the length of the ineffective section without increasing the tube shrinkage angle, thereby increasing the effective utilization area of ​​the ultra-thin heat pipe.

[0008] According to one embodiment of the present invention, the first positioning member and the second positioning member are respectively provided with a protrusion protruding toward the middle position on the opposite side, the end surface of the protrusion is formed as the clamping surface, and the cutting portion is provided on the outer peripheral edge of one side of the clamping surface.

[0009] According to one embodiment of the present invention, the first positioning member and the second positioning member are arranged in the horizontal direction, the cutting portion is arranged on the upper edge of one of the clamping surfaces, the area of ​​the clamping surface provided with the cutting portion is smaller than the area of ​​the other clamping surface, and the horizontal position of the cutting portion is lower than the horizontal position of the upper edge of the other clamping surface.

[0010] According to one embodiment of the present invention, step S2 includes: S21, inserting one end of the ultra-thin heat pipe from bottom to top between the first positioning piece and the second positioning piece; S22, adjusting the position of the ultra-thin heat pipe relative to the cutting portion to adjust the length of the ultra-thin heat pipe after cutting.

[0011] According to an embodiment of the present invention, at least a portion of each of the clamping surfaces is formed as an arc-shaped surface.

[0012] According to an embodiment of the present invention, the length of the cutting portion protruding from the clamping surface is 0.2 mm-0.3 mm.

[0013] According to an embodiment of the present invention, in step S3, the clamping surface provided with the cutting portion is controlled to move toward the direction where the other clamping surface is located to cut the end of the ultra-thin heat pipe and press the incision.

[0014] According to an embodiment of the present invention, in step S4, the incision is sealed by welding.

[0015] According to one embodiment of the present invention, step S4 includes: S41, placing the ultra-thin heat pipe with the end cut off on a mounting seat, with the incision of the ultra-thin heat pipe extending out of the mounting seat; S42, welding and sealing the incision by laser welding equipment.

[0016] According to the second aspect of the present invention, the cutting and sealing device of the ultra-thin heat pipe comprises: a first positioning member and a second positioning member, the first positioning member and the second positioning member are spaced apart and arranged opposite to each other, the first positioning member and the second positioning member are respectively provided with clamping surfaces on the opposite sides, and one of the clamping surfaces is provided with a cutting portion protruding toward the other clamping surface; a driving member, the driving member is connected to at least one of the first positioning member and the second positioning member, the driving member drives at least one of the first positioning member and the second positioning member to move so that the two clamping surfaces are close to each other until the cutting portion cuts off the end of the ultra-thin heat pipe and the two clamping surfaces are pressed together to close the incision of the ultra-thin heat pipe; a sealing component, the sealing component is used to seal the incision.

[0017] According to one embodiment of the present invention, the first positioning member and the second positioning member are respectively provided with a protrusion protruding toward the middle position on the opposite side, the end surface of the protrusion is formed as the clamping surface, and the cutting portion is provided on the outer peripheral edge of one side of the clamping surface.

[0018] According to one embodiment of the present invention, the first positioning member and the second positioning member are arranged in the horizontal direction, the cutting portion is arranged on the upper edge of one of the clamping surfaces, the area of ​​the clamping surface provided with the cutting portion is smaller than the area of ​​the other clamping surface, and the horizontal position of the cutting portion is lower than the horizontal position of the upper edge of the other clamping surface.

[0019] According to an embodiment of the present invention, at least a portion of each of the clamping surfaces is formed as an arc-shaped surface.

[0020] According to an embodiment of the present invention, the length of the cutting portion protruding from the clamping surface is 0.2 mm-0.3 mm.

[0021] According to an embodiment of the present invention, the driving member drives the clamping surface provided with the cutting portion to move toward the direction where the other clamping surface is located so as to cut the end of the ultra-thin heat pipe and press the incision.

[0022] According to an embodiment of the present invention, the sealing assembly seals the incision by welding.

[0023] According to one embodiment of the present invention, the sealing assembly includes: a mounting seat, on which is provided a mounting groove corresponding to the shape of the ultra-thin heat pipe, the ultra-thin heat pipe with the cut end portion being arranged in the mounting groove and the incision extending out of the mounting groove; and a welding part, which is arranged above the mounting seat to weld the incision.

[0024] According to one embodiment of the present invention, the sealing assembly further includes: a base plate, which is formed in a plate shape, and the mounting seat is arranged on the base plate; a bracket, which is arranged on the base plate and at least a portion of the bracket is located above the mounting seat, and the welding part is arranged on the bracket.

[0025] According to one embodiment of the present invention, the welding part is a laser welding device, and the position of the laser welding device on the bracket is movable to adjust the welding position of the incision.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 It is a schematic diagram of the structure of a heat pipe in the prior art;

[0029] Figure 2 is a flow chart of a cutting and sealing method of an ultra-thin heat pipe according to an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of assembling a first positioning member and a second positioning member according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the structure of an ultra-thin heat pipe after being processed by a cutting portion and a clamping surface according to an embodiment of the present invention;

[0032] Figure 5 is a schematic structural diagram of a sealing assembly according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] Ultra-thin heat pipe cutting and sealing device 100;

[0035] A first positioning member 10;

[0036] A second positioning member 20;

[0037] Protrusion 30; Clamping surface 31;

[0038] A cutting portion 40;

[0039] Sealing assembly 50; mounting seat 51; welding member 52; bottom plate 53; bracket 54;

[0040] Ultra-thin heat pipe 200. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The cutting and sealing method of the ultra-thin heat pipe according to the embodiment of the present invention is an invention made by the inventor of the present application based on the following facts.

[0045] like Figure 1 As shown, Figure 1 The common structure of the existing ultra-thin wall heat pipe is shown. Due to process reasons, both ends of the existing heat pipe will have invalid sections after being flattened, such as Figure 1 The shaded portion shown in the figure is usually about 5 mm to 15 mm long, and the invalid section cannot perform heat exchange during the heat exchange process of the heat pipe, which affects the effective utilization area of ​​the heat pipe to a certain extent.

[0046] In order to reduce the length of the ineffective section in the prior art, the method of increasing the tube reduction angle is usually adopted to reduce the length of the ineffective section. However, the process of increasing the tube reduction angle is relatively complicated and inconvenient to operate. In addition, the sealing process of the heat pipe port requires relatively high process requirements, and the commonly used sealing technology is difficult to meet the sealing effect.

[0047] Based on this, the inventor of this application creatively came up with the invention of this application after long-term research.

[0048] First refer to Figure 2 The cutting and sealing method and the cutting and sealing device 100 of the ultra-thin heat pipe according to the embodiment of the present invention are described in detail.

[0049] like Figure 2 As shown, the cutting and sealing method of the ultra-thin heat pipe according to the embodiment of the present invention comprises the following steps:

[0050] S1. Provide a first positioning member 10 and a second positioning member 20 that are spaced apart and arranged opposite to each other. The first positioning member 10 and the second positioning member 20 are respectively provided with clamping surfaces 31 facing opposite sides. One clamping surface 31 is provided with a cutting portion 40 that protrudes toward the other clamping surface 31.

[0051] S2, extending one end of the ultra-thin heat pipe 200 between the first positioning member 10 and the second positioning member 20, and adjusting the position of the ineffective section relative to the cutting portion 40.

[0052] S3, driving at least one of the first positioning member 10 and the second positioning member 20 to move so that the two clamping surfaces 31 approach each other until the cutting portion 40 cuts off the end of the ultra-thin heat pipe and the two clamping surfaces 31 press the cut of the ultra-thin heat pipe 200.

[0053] S4. Seal the incision.

[0054] In other words, the cutting and sealing method of the ultra-thin heat pipe according to the embodiment of the present invention includes the following steps: first, two first positioning members 10 and second positioning members 10 are arranged opposite to each other, and clamping surfaces 31 are respectively arranged on the first positioning member 10 and the second positioning member 10, and the clamping surface 31 corresponding to the first positioning member 10 is arranged opposite to the clamping surface 31 corresponding to the second positioning member 10. A cutting portion 40 may be provided on one of the clamping surfaces 31, and the cutting portion 40 can protrude in the direction of the other clamping surface 31, and the other clamping surface 31 can play a supporting role in the cutting process of the cutting portion 40. Then, the end of the ultra-thin heat pipe 200 to be sealed is placed between the first positioning member 10 and the second positioning member 20, wherein the area to be cut is located between the two clamping surfaces 31. The position of the ultra-thin heat pipe 200 and the cutting portion 40 is adjusted to facilitate the subsequent accurate cutting of the area to be cut. Subsequently, by driving the first positioning member 10 and / or the second positioning member 20 to move, the two clamping surfaces 31 are brought close to each other, the area to be cut of the ultra-thin heat pipe 200 is clamped, and the end of the ultra-thin heat pipe is cut off by the cutting portion 40. During the cutting process, the incision of the ultra-thin heat pipe 200 can be quickly pressed and sealed under the action of the two clamping surfaces 31. Finally, the incision is sealed to improve the sealing effect.

[0055] It should be noted that when both ends of the ultra-thin heat pipe 200 need to be cut and sealed, one end can be processed first and then the other end. The ultra-thin heat pipe 200 can be a thin-walled thick hollow copper tube.

[0056] Therefore, according to the cutting and sealing method of the ultra-thin heat pipe of the embodiment of the present invention, the end of the ultra-thin heat pipe 200 is first cut, and the incision can be quickly pressed and sealed during the cutting process, and then the sealing effect is improved by further sealing. Compared with the prior art, the method of the embodiment of the present invention can effectively shorten the length of the ineffective section without increasing the shrinking angle, thereby increasing the effective utilization area of ​​the ultra-thin heat pipe 200.

[0057] According to one embodiment of the present invention, the first positioning member 10 and the second positioning member 20 are respectively provided with a protrusion 30 protruding toward the middle position on the opposite side, the end surface of the protrusion 30 can be formed as a clamping surface 31, and the cutting portion 40 is provided on the outer peripheral edge of one side of a clamping surface 31.

[0058] That is to say, the surfaces on the opposite side of the first positioning member 10 and the second positioning member 20 are not planar structures, but are respectively formed with protrusions toward the middle position, and the end faces of the protrusions form clamping surfaces 31 that can clamp the ultra-thin heat pipe 200, and the cutting portion 40 is arranged on one side edge of a clamping surface 31.

[0059] Therefore, by setting the clamping surface 31 and the cutting portion 40 of the structure, when the clamping surfaces 31 of the first positioning member 10 and the second positioning member 20 are approaching each other, after the cutting portion 40 cuts the end of the ultra-thin heat pipe 200, the ultra-thin heat pipe 200 can be quickly clamped and sealed by the clamping surface 31. On the basis of ensuring the cutting accuracy, the ultra-thin heat pipe 200 can be quickly sealed, and the raised portion 30 can effectively reduce the area of ​​the clamping and sealing portion of the ultra-thin heat pipe 200, thereby effectively reducing the area of ​​the ineffective section of the ultra-thin heat pipe 200.

[0060] In some specific embodiments of the present invention, the first positioning member 10 and the second positioning member 20 are arranged in the horizontal direction, the cutting portion 40 is arranged on the upper edge of a clamping surface 31, the area of ​​the clamping surface 31 provided with the cutting portion 40 is smaller than the area of ​​the other clamping surface 31, and the horizontal position of the cutting portion 40 is lower than the horizontal position of the upper edge of the other clamping surface 31.

[0061] Further, according to an embodiment of the present invention, step S2 includes:

[0062] S21, inserting one end of the ultra-thin heat pipe 200 from bottom to top between the first positioning member 10 and the second positioning member 20, can quickly control the extension length of the ultra-thin heat pipe 200, save space, and improve production efficiency.

[0063] S22, adjusting the position of the ultra-thin heat pipe relative to the cutting portion 40 to adjust the length of the ultra-thin heat pipe 200 after cutting.

[0064] In other words, the first positioning member 10 and the second positioning member 20 can be respectively arranged as follows: Figure 3 In the planar structure shown in the figure, which is arranged relatively horizontally, a protrusion 30 is respectively provided on the opposite side of the first positioning member 10 and the second positioning member 20, and the cutting portion 40 can be provided on the second positioning member 20 located on the right side, and the area of ​​the clamping surface 31 of the second positioning member 20 is smaller than the area of ​​the clamping surface of the first positioning member 10, and the horizontal position of the cutting portion 40 is lower than the horizontal height of the upper edge of the clamping surface of the first positioning member 10.

[0065] When the first positioning member 10 and the second positioning member 20 of the structure are used to cut the ultra-thin heat pipe 200, one end of the ultra-thin heat pipe 200 to be cut and sealed can be inserted from bottom to top into the gap between the first positioning member 10 and the second positioning member 20, and then the position of the ultra-thin heat pipe 200 and the cutting portion 40 can be adjusted according to the length of the ultra-thin heat pipe 200 that needs to be retained, so that the effective heat exchange length of the ultra-thin heat pipe 200 can be guaranteed as much as possible.

[0066] Therefore, when the first positioning member 10 and the second positioning member 20 of the structure are cut and sealed, the operation is not only convenient, but also the cutting length and the length of the invalid section of the ultra-thin heat pipe 200 can be reasonably controlled, thereby effectively ensuring the heat exchange area of ​​the ultra-thin heat pipe 200.

[0067] In some specific embodiments of the present invention, at least a portion of each clamping surface 31 is formed as an arc-shaped surface.

[0068] Specifically, Figure 3 As shown, the cutting portion 40 can be arranged on the second positioning member 20 located on the right side, and the area corresponding to the clamping surface 31 below the cutting portion 40 can be formed into an arc surface, and the arc surface can be bent toward the left oblique lower direction. When the cutting portion 40 at the upper edge moves to the left and cuts, the arc surface squeezes the cut toward the direction of the other clamping surface 31. By setting the curvature of the arc surface, the inclination angle of the squeezed part of the cut can be adjusted, so that the length of the invalid section can be further controlled. The structure of the ultra-thin heat pipe 200 after cutting and pressing is as shown in FIG. Figure 4 As shown, the structure shown in area A is the structure after the ultra-thin heat pipe 200 is cut and pressed.

[0069] Optionally, the length of the cutting portion 40 protruding from the clamping surface 31 is 0.2 mm to 0.3 mm. Thus, the cutting and sealing effects of the ultra-thin heat pipe 200 can be further accurately controlled, thereby further controlling the length of the ineffective section.

[0070] According to an embodiment of the present invention, in step S3, the clamping surface 31 provided with the cutting portion 40 is controlled to move toward the direction where the other clamping surface 31 is located to cut the ultra-thin heat pipe 200 and press the cut.

[0071] That is, in the process of cutting the ultra-thin heat pipe 200 to form an incision, the clamping surface 31 provided with the cutting portion 40 continues to move toward the direction of the other clamping surface 31, and the ultra-thin heat pipe 200 at the incision can be squeezed toward the direction of the other clamping surface 31, and the incision can be pressed together with the cooperation of the two clamping surfaces 31. By controlling the clamping surface 31 provided with the cutting portion 40 to move toward the direction of the other clamping surface 31, the difficulty of cutting can be reduced. Before cutting, the ultra-thin heat pipe 200 can be in contact with the other clamping surface 31, which can effectively prevent the ultra-thin heat pipe 200 from shifting during the cutting and pressing process.

[0072] In some specific embodiments of the present invention, in step S4, the incision is sealed by welding. The welding process is easy to operate and has a good sealing effect.

[0073] Optionally, step S4 includes:

[0074] S41 , placing the ultra-thin heat pipe 200 with the end cut off on the mounting seat 51 , with the cutout of the ultra-thin heat pipe 200 extending out of the mounting seat 51 .

[0075] S42. The incision is welded and sealed by laser welding equipment, which can seal the incision of the invalid section with a smaller length, with high sealing efficiency and precision.

[0076] Therefore, according to the method of the embodiment of the present invention, the end of the ultra-thin heat pipe 200 can be cut into a flat cut, and the cut can be clamped and sealed. The sealed cut can be airtight, and then the cut can be further sealed by welding or other methods. According to the method of the embodiment of the present invention, the length of the ineffective section can be simply and effectively shortened, and at the same time, there is no need to increase the shrink angle, that is, the effective utilization area of ​​the ultra-thin heat pipe 200 can be effectively increased.

[0077] The following describes in detail the ultra-thin heat pipe cutting and sealing device 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0078] like Figures 3 to 5 As shown, the cutting and sealing device 100 for an ultra-thin heat pipe according to an embodiment of the present invention comprises: a first positioning member 10 , a second positioning member 20 , a driving member and a sealing assembly 50 .

[0079] Specifically, the first positioning member 10 and the second positioning member 20 are spaced apart and arranged opposite to each other, and the first positioning member 10 and the second positioning member 20 are respectively provided with clamping surfaces 31 facing opposite sides, and one clamping surface 31 is provided with a cutting portion 40 protruding toward the other clamping surface 31, and the driving member is connected to at least one of the first positioning member 10 and the second positioning member 20, and the driving member drives at least one of the first positioning member 10 and the second positioning member 20 to move so that the two clamping surfaces 31 are close to each other until the cutting portion 40 cuts off the end of the ultra-thin heat pipe 200 and the two clamping surfaces 31 are pressed together with the incision of the ultra-thin heat pipe 200, and the sealing assembly 50 is used to seal the incision.

[0080] In other words, the cutting and sealing device 100 of the ultra-thin heat pipe according to the embodiment of the present invention is mainly composed of a first positioning member 10, a second positioning member 20, a driving member and a sealing assembly 50. The first positioning member 10 is spaced apart from the second positioning member 20 and arranged oppositely. A clamping surface 31 is provided on the side of the first positioning member 10 facing the position of the second positioning member 20, and a clamping surface 31 is also provided on the side of the second positioning member 20 facing the position of the first positioning member 10. A cutting portion 40 protruding toward the other clamping surface 31 may be provided on one of the clamping surfaces 31, and the ultra-thin heat pipe 200 can be cut by the cutting portion 40. When in use, the first positioning member 10 and / or the second positioning member 30 can be driven to move by the driving member to reduce the distance between the two clamping surfaces 31. The ultra-thin heat pipe 200 to be cut can be placed between the two clamping surfaces 31. The two clamping surfaces 31 move relative to each other until the cutting part 40 stops against the ultra-thin heat pipe 200, and continue to move. The cutting part 40 cuts the end of the ultra-thin heat pipe 200. While cutting, the two clamping surfaces 31 cooperate with each other to press and seal the incision. After the incision is pressed and sealed, the sealing component 50 can be used to further seal the incision.

[0081] Therefore, the cutting and sealing device 100 of the ultra-thin heat pipe according to the embodiment of the present invention adopts the combination of the first positioning member 10, the second positioning member 20, the driving member and the sealing assembly 50, and can realize the compression sealing of the incision while cutting the end of the ultra-thin heat pipe 200, and the incision can be further sealed by the sealing assembly 50. The cutting and sealing device 100 of the ultra-thin heat pipe according to the embodiment of the present invention can shorten the length of the invalid section without increasing the shrinking angle, and can effectively improve the effective utilization area of ​​the ultra-thin heat pipe 200. The cutting and sealing device 100 has the advantages of compact structure, high cutting and sealing efficiency, and small invalid section size.

[0082] According to one embodiment of the present invention, the first positioning member 10 and the second positioning member 20 are respectively provided with a protrusion 30 protruding toward the middle position on opposite sides. The end surface of the protrusion 30 is formed as a clamping surface 31, and the cutting portion 40 is provided on one peripheral edge of one clamping surface 31.

[0083] That is to say, the surfaces on the opposite side of the first positioning member 10 and the second positioning member 20 are not planar structures, but are respectively formed with protrusions toward the middle position, and the end faces of the protrusions form clamping surfaces 31 that can clamp the ultra-thin heat pipe 200, and the cutting portion 40 is arranged on one side edge of a clamping surface 31.

[0084] Therefore, by setting the clamping surface 31 and the cutting portion 40 of the structure, when the clamping surfaces 31 of the first positioning member 10 and the second positioning member 20 are approaching each other, after the cutting portion 40 cuts the end of the ultra-thin heat pipe 200, the ultra-thin heat pipe 200 can be quickly clamped and sealed by the clamping surface 31. On the basis of ensuring the cutting accuracy, the ultra-thin heat pipe 200 can be quickly sealed, and the raised portion 30 can effectively reduce the area of ​​the clamping and sealing portion of the ultra-thin heat pipe 200, thereby effectively reducing the area of ​​the ineffective section of the ultra-thin heat pipe 200.

[0085] According to an embodiment of the present invention, the driving member drives the clamping surface 31 provided with the cutting portion 40 to move toward the direction of the other clamping surface 31 to cut the ultra-thin heat pipe 200 and press the cut. In other words, the driving member can be connected to the first positioning member 10 or the second positioning member 20. In this embodiment, the driving member can be connected to the first positioning member 10 provided with the cutting portion 40 and drive the first positioning member 10 to move in the horizontal direction.

[0086] Optionally, the sealing assembly 50 seals the incision by welding.

[0087] According to an embodiment of the present invention, the sealing assembly 50 includes: a mounting seat 51 and a welding member 52. The mounting seat 51 is provided with a mounting groove corresponding to the shape of the ultra-thin heat pipe 200. The ultra-thin heat pipe 200 with the end cut off is arranged in the mounting groove and the incision extends out of the mounting groove, which can prevent the ultra-thin heat pipe 200 from shifting during welding. The welding member 52 is arranged above the mounting seat 51 to weld the incision, and the welding precision is high, which can be applied to the invalid section with a smaller size.

[0088] Furthermore, the sealing assembly 50 also includes a base plate 53 and a bracket 54. The base plate 53 can be formed into a plate shape, the mounting seat 51 can be arranged on the base plate 53, the bracket 54 can be arranged on the base plate 53 and at least a portion of the bracket 54 is located above the mounting seat 51, and the welding part 52 is arranged on the bracket 54, and the bracket 54 can support and position the welding part 52.

[0089] In some specific embodiments of the present invention, the welding member 52 is a laser welding device, and the laser can be used to weld the incision. The position of the laser welding device on the bracket 54 can be moved to adjust the welding position of the incision, which has the advantages of wide application range and high flexibility. When laser welding is used, welding can be performed from the area of ​​the ultra-thin heat pipe 200 opposite to the incision.

[0090] In summary, the cutting and sealing device 100 of the ultra-thin heat pipe according to the embodiment of the present invention combines the first positioning member 10, the second positioning member 20, the driving member and the sealing assembly 50, and can shorten the length of the invalid section without increasing the tube shrinkage angle, thereby effectively improving the effective utilization area of ​​the ultra-thin heat pipe 200. Compared with the prior art, especially for large-diameter heat pipes, the length of the invalid section in the prior art is 10-15 mm or more. The cutting and sealing device 100 of the present invention can ensure that the length of the invalid section is within 2 mm.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cutting and sealing method for an ultra-thin heat pipe, characterized in that: The method comprises the following steps: S1. Provide a first positioning member and a second positioning member that are spaced apart and arranged opposite to each other, wherein the first positioning member and the second positioning member are respectively provided with clamping surfaces facing opposite sides, and one of the clamping surfaces is provided with a cutting portion that protrudes toward the other clamping surface; S2, extending one end of the ultra-thin heat pipe between the first positioning member and the second positioning member, and adjusting the position of the ultra-thin heat pipe relative to the cutting portion; S3, driving at least one of the first positioning member and the second positioning member to move so that the two clamping surfaces approach each other until the cutting portion cuts off the end of the ultra-thin heat pipe and the two clamping surfaces press the cutout of the ultra-thin heat pipe; S4, sealing the incision; The first positioning member and the second positioning member are respectively provided with a protrusion protruding toward the middle position on the opposite side, the end surface of the protrusion is formed as the clamping surface, and the cutting portion is provided on the outer peripheral edge of one side of the clamping surface; The first positioning member and the second positioning member are arranged in the horizontal direction, the cutting portion is arranged on the upper edge of one of the clamping surfaces, the area of ​​the clamping surface provided with the cutting portion is smaller than the area of ​​the other clamping surface, and the horizontal position of the cutting portion is lower than the horizontal position of the upper edge of the other clamping surface; The area of ​​the clamping surface corresponding to the cutting portion below the cutting portion is formed as an arc-shaped surface, and the length of the cutting portion protruding from the clamping surface is 0.2mm-0.3mm; the arc-shaped surface bends toward the left oblique lower direction, and when the cutting portion of the upper edge moves to the left and cuts, the arc-shaped surface squeezes the incision toward the direction of the other clamping surface, and by setting the curvature of the arc-shaped surface, the inclination angle of the extruded part of the incision can be adjusted, thereby controlling the length of the invalid section.

2. The method according to claim 1, characterized in that Step S2 includes: S21, inserting one end of the ultra-thin heat pipe from bottom to top between the first positioning member and the second positioning member; S22, adjusting the position of the ultra-thin heat pipe relative to the cutting portion to adjust the length of the ultra-thin heat pipe after cutting.

3. The method according to claim 1, characterized in that: In step S3, the clamping surface provided with the cutting portion is controlled to move toward the direction where the other clamping surface is located to cut the end of the ultra-thin heat pipe and press the incision.

4. The method according to claim 1, characterized in that In step S4, the incision is sealed by welding.

5. The method according to claim 4, characterized in that Step S4 includes: S41, placing the ultra-thin heat pipe with the end cut off on a mounting seat, with the cutout of the ultra-thin heat pipe extending out of the mounting seat; S42, welding and sealing the incision by laser welding equipment.

6. A cutting and sealing device for an ultra-thin heat pipe, characterized in that: include: A first positioning member and a second positioning member, wherein the first positioning member and the second positioning member are spaced apart and arranged opposite to each other, the first positioning member and the second positioning member are respectively provided with clamping surfaces facing opposite sides, and one of the clamping surfaces is provided with a cutting portion protruding toward the other clamping surface; a driving member connected to at least one of the first positioning member and the second positioning member, the driving member driving at least one of the first positioning member and the second positioning member to move so that the two clamping surfaces approach each other until the cutting portion cuts off the end of the ultra-thin heat pipe and the two clamping surfaces press the cutout of the ultra-thin heat pipe; A sealing component, the sealing component is used to seal the incision; The first positioning member and the second positioning member are respectively provided with a protrusion protruding toward the middle position on the opposite side, the end surface of the protrusion is formed as the clamping surface, and the cutting portion is provided on the outer peripheral edge of one side of the clamping surface; The first positioning member and the second positioning member are arranged in the horizontal direction, the cutting portion is arranged on the upper edge of one of the clamping surfaces, the area of ​​the clamping surface provided with the cutting portion is smaller than the area of ​​the other clamping surface, and the horizontal position of the cutting portion is lower than the horizontal position of the upper edge of the other clamping surface; The area of ​​the clamping surface corresponding to the cutting portion below the cutting portion is formed as an arc-shaped surface, and the length of the cutting portion protruding from the clamping surface is 0.2mm-0.3mm; the arc-shaped surface bends toward the left oblique lower direction, and when the cutting portion of the upper edge moves to the left and cuts, the arc-shaped surface squeezes the incision toward the direction of the other clamping surface, and by setting the curvature of the arc-shaped surface, the inclination angle of the extruded part of the incision can be adjusted, thereby controlling the length of the invalid section.

7. The cutting and sealing device for ultra-thin heat pipes according to claim 6, characterized in that: The sealing assembly seals the incision by welding.

8. The cutting and sealing device for ultra-thin heat pipes according to claim 7, characterized in that: The sealing assembly comprises: A mounting seat, wherein the mounting seat is provided with a mounting groove corresponding to the shape of the ultra-thin heat pipe, the ultra-thin heat pipe with the cut end portion thereof being arranged in the mounting groove and the cutout extending out of the mounting groove; A welding piece is arranged above the mounting seat to weld the cutout.

9. The cutting and sealing device for ultra-thin heat pipes according to claim 8, characterized in that: The sealing assembly further comprises: A bottom plate, the bottom plate is formed in a plate shape, and the mounting seat is arranged on the bottom plate; A bracket is arranged on the bottom plate and at least a part of the bracket is located above the mounting seat, and the welding part is arranged on the bracket.

10. The cutting and sealing device for ultra-thin heat pipes according to claim 9, characterized in that: The welding part is a laser welding device, and the position of the laser welding device on the bracket is movable to adjust the welding position of the incision.

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