Heat pipe and its copper mesh installation method

Abstract

The present invention relates to a heat pipe and a method for installing a copper mesh thereon, comprising the following steps: S1. Cut the copper mesh according to the size of the copper tube to obtain a copper mesh sheet, the length of the copper mesh sheet being the same as the length of the copper tube, and the width of the copper mesh sheet being π times the inner diameter of the copper tube; S2. Curl the copper mesh sheet on a mandrel to form a copper mesh sleeve, and one side edge of the copper mesh sheet covers the other edge, so that the outer diameter of the copper mesh sleeve is smaller than the inner diameter of the copper tube; S3. Insert the mandrel together with the copper mesh sleeve into the copper tube; S4. Expand the hole of the copper mesh sleeve so that the copper mesh sleeve fits the inner wall of the copper tube, and then draw out the mandrel. The copper mesh sleeve obtained by curling in the present invention has an outer diameter smaller than the inner diameter of the copper tube, and can easily and quickly enter the copper tube. There will be no large frictional force between the copper mesh sleeve and the inner wall of the copper tube, which can effectively prevent the copper mesh sleeve from being worn. After insertion, expand the hole of the copper mesh sleeve so that the copper mesh sleeve fits tightly against the inner wall of the copper tube, without the need for processes such as stretching, which can prevent the copper tube and the copper mesh sleeve from deforming, and the process is simpler.

Description

Technical Field

[0001] The present invention belongs to the field of heat pipes, and in particular, to a heat pipe and a method for installing a copper mesh thereof. Background Art

[0002] A heat pipe is an efficient heat transfer device, commonly used for heat dissipation of electronic devices. One end of the heat pipe is an evaporation end, and the other end is a cooling end. The inner wall of the heat pipe is provided with a capillary structure layer and a medium. During operation, the medium at the evaporation end vaporizes, then flows through the inner cavity of the heat pipe to the cooling end, liquefies when encountering cold, and returns to the evaporation end under the action of the capillary structure layer to achieve the circulation of the medium. Common capillary structure layers include grooves, sintered layers, metal meshes, and composite layers. Grooves are multiple groove structures provided on the inner wall of the heat pipe. The sintered layer is formed by sintering metal powder. The metal mesh is a mesh structure. The composite layer is a combination of multiple capillary structure layers.

[0003] Among them, when the capillary structure layer uses a metal mesh, the heat pipe is generally a copper pipe, and the metal mesh generally uses a copper mesh. During preparation, a large-sized copper mesh is first prepared, and then the copper mesh is cut according to the inner diameter of the copper pipe so that the length of the copper mesh matches the length of the copper pipe. The width of the copper mesh is π times the inner diameter of the copper pipe. Then the copper mesh is curled and inserted into the copper pipe. When inserting the copper mesh, generally the copper mesh is sleeved on a mandrel, and then the mandrel and the copper mesh are inserted into the copper pipe at the same time, and then the mandrel is taken out. To ensure the heat dissipation effect of the heat pipe, the copper mesh must be closely attached to the inner wall of the copper pipe, resulting in friction between the copper mesh and the inner wall of the copper pipe when inserting the copper mesh, difficult insertion, easy damage to the copper mesh, and low efficiency. CN01124296.5 discloses a method for installing a copper mesh in the capillary phenomenon processing during the heat pipe manufacturing process, which can solve the problems of large friction between the copper mesh and the copper pipe and easy damage to the copper mesh, but it is necessary to stretch the copper pipe and the copper mesh, increasing the process of copper mesh installation and increasing the production cost. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heat pipe and a method for installing a copper mesh thereof, which can reduce the difficulty of copper mesh installation and prevent copper mesh wear.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a method for installing a copper mesh, including the following steps:

[0006] S1. Cut the copper mesh according to the size of the copper pipe to obtain a copper mesh sheet. The length of the copper mesh sheet is the same as the length of the copper pipe, and the width of the copper mesh sheet is π times the inner hole diameter of the copper pipe;

[0007] S2. Curl the copper mesh sheet on the mandrel to form a copper mesh sleeve, and one side edge of the copper mesh sheet covers the other edge, so that the outer diameter of the copper mesh sleeve is smaller than the inner diameter of the copper pipe;

[0008] S3. Insert the mandrel together with the copper mesh sleeve into the interior of the copper pipe;

[0009] S4. Ream the copper mesh sleeve to make it fit the inner wall of the copper tube, and then draw out the mandrel.

[0010] Further, the mandrel is a hollow rod, and a plurality of axially extending positioning grooves are provided on the outer wall of the mandrel. The positioning grooves are evenly distributed around the central axis of the mandrel. An expanding block is arranged in each positioning groove. The expanding block is in radial sliding fit with the positioning groove on the mandrel, and the expanding block is connected with an expanding driving assembly.

[0011] In step S2, the expanding block is located in the positioning groove.

[0012] In step S4, the expanding driving assembly drives each expanding block to move radially outwards synchronously. After the expanding block contacts the copper mesh sleeve, it pushes the copper mesh sleeve to tightly fit the inner wall of the copper tube. Then, the expanding driving assembly drives each expanding block back into the positioning groove, and the mandrel is drawn out.

[0013] Further, in step S2, after the copper mesh sheet is curled on the mandrel, the two side edges of the copper mesh sheet are located between two adjacent positioning grooves.

[0014] In step S4, after the expanding driving assembly drives each expanding block back into the positioning groove, the mandrel rotates by a set angle so that one of the positioning grooves is aligned with the docking interface of the two side edges of the copper mesh sleeve. Then, the expanding driving assembly is used to drive each expanding block to move radially outwards synchronously again, and the expanding block presses the copper mesh sleeve and the docking interface again.

[0015] Further, the expanding driving assembly includes a driving rod arranged inside the mandrel. A plurality of first bosses and a plurality of second bosses are provided on the outer wall of the driving rod. A third boss and a fourth boss are provided on the inner wall of each expanding block. The number of the third bosses is the same as that of the first bosses, and the number of the fourth bosses is the same as that of the second bosses. A first inclined surface is provided on the side wall of the first boss facing the expanding block, and a second inclined surface is provided on the side wall of the third boss facing the driving rod. Both the second boss and the fourth boss include a radial section and an axial section, and the radial section and the axial section are distributed in an L shape. A third inclined surface is provided on the side wall of the axial section of the second boss facing the driving rod, and a fourth inclined surface is provided on the side wall of the axial section of the fourth boss facing the expanding block. The fourth inclined surface is parallel to the first inclined surface, and the third inclined surface is parallel to the second inclined surface. When the driving rod drives the first boss to move axially towards the third boss, the first inclined surface fits the second inclined surface. When the driving rod drives the second boss to move axially towards the fourth boss, the axial section of the second boss enters the inner side of the axial section of the fourth boss, and the third inclined surface fits the fourth inclined surface.

[0016] Further, the mandrel is installed on an installation machine. A horizontal turntable is arranged on the installation machine. The turntable is connected to a first driving mechanism for driving the turntable to rotate. A net rolling station and a copper net installation station are arranged below the turntable. Mandrels are arranged at both the net rolling station and the copper net installation station. The mandrels are arranged vertically, and the upper ends of the mandrels are installed on the turntable through bearings. Each mandrel is connected to a second driving mechanism for driving the mandrel to rotate; A moving frame is arranged at the net rolling station. The moving frame is connected to a translation driving mechanism. A vertical net rolling shaft is arranged on the moving frame. Both ends of the net rolling shaft are installed on the moving frame through bearings. A curling gap is arranged between the net rolling shaft and the mandrel at the net rolling station; A first lifting mechanism is arranged below the copper net installation station. A positioning seat is arranged at the top of the first lifting mechanism. A positioning block is arranged on the positioning seat through a bracket. A copper tube positioning mechanism is arranged in the positioning block; A second lifting mechanism is arranged on the positioning seat below the positioning block. A connecting mechanism for connecting a driving rod is arranged at the upper end of the second lifting mechanism;

[0017] In step S2, manually insert one side edge of the copper net sheet into the curling gap. The translation driving mechanism pushes the moving frame towards the mandrel, so that the net rolling shaft presses the side edge of the copper net sheet. Then, the second driving mechanism drives the mandrel to rotate 360°, curls the copper net sheet on the mandrel, and then uses the translation driving mechanism to push the moving frame to reset. Manually curl the uncurled part of the copper net sheet to complete the formation of a copper net sleeve;

[0018] The first driving mechanism drives the turntable to rotate by a set angle, conveys the copper net sleeve together with the mandrel to the copper net installation station, vertically fixes the copper tube on the positioning block, and then uses the first lifting mechanism to push the positioning seat and the copper tube upward, so that the mandrel penetrates through the copper tube; Then, the connecting mechanism connects the second lifting mechanism with the driving rod, and uses the second lifting mechanism to drive the driving rod to axially move to complete the reaming of the copper net sleeve.

[0019] Further, the connecting mechanism includes an upper plate and a lower plate. There is a spacing between the upper plate and the lower plate, and the upper plate and the lower plate are integrally connected by connecting columns. The lower plate is fixedly connected to the second lifting mechanism. A rectangular hole is arranged on the upper plate. A rectangular connecting block is arranged at the lower end of the driving rod. The length of the connecting block is less than the length of the rectangular hole, the width of the connecting block is less than the width of the rectangular hole, and the length of the connecting block is greater than the width of the rectangular hole;

[0020] When the first lifting mechanism pushes the positioning seat and the copper tube upward, the length direction of the connecting block is parallel to the length direction of the rectangular hole. The connecting block passes through the rectangular hole and reaches between the upper plate and the lower plate. Then, use the second driving mechanism to drive the mandrel and the driving rod as a whole to rotate by a set angle, so that the length direction of the connecting block forms an acute angle, a right angle or an obtuse angle with the length direction of the rectangular hole. When the second lifting mechanism moves up and down, the driving rod can be driven to axially move.

[0021] Furthermore, the outer wall of the reaming block is an arc wall, and the diameter of the arc wall is the same as the inner hole diameter of the copper mesh sleeve after reaming.

[0022] Furthermore, there are 4 reaming blocks.

[0023] A heat pipe includes a copper tube and a copper mesh capillary layer provided on the inner wall of the copper tube, and the copper mesh capillary layer is prepared by the above method.

[0024] The beneficial effects of the present invention are as follows: The outer diameter of the copper mesh sleeve obtained by curling in the present invention is smaller than the inner diameter of the copper tube. When inserting the copper mesh sleeve, the copper mesh sleeve can enter the copper tube easily and quickly, and there will be no large frictional force between the copper mesh sleeve and the inner wall of the copper tube, which can effectively prevent the copper mesh sleeve from being worn. After insertion, the copper mesh sleeve is reamed, so that the copper mesh sleeve fits tightly against the inner wall of the copper tube, and there is no need for processes such as stretching, which can prevent the copper tube and the copper mesh sleeve from deforming, and the process is simpler. Description of the Drawings

[0025] Figure 1 is a flow schematic diagram of the present invention;

[0026] Figure 2 is a schematic diagram of the heat pipe of the present invention;

[0027] Figure 3 is a cross-sectional schematic diagram after curling the copper mesh sheet on the mandrel;

[0028] Figure 4 is a motion schematic diagram during the reaming of the copper mesh sleeve;

[0029] Figure 5 is a cross-sectional view schematic diagram of a mandrel of an implementation manner;

[0030] Figure 6 is Figure 5 a schematic diagram when the reaming block of the mandrel shown moves outward;

[0031] Figure 7 is Figure 5 a schematic diagram when the reaming block of the mandrel shown moves inward;

[0032] Figure 8 is a cross-sectional view schematic diagram of the installation machine;

[0033] Figure 9 is a curling schematic diagram of the copper mesh sheet after the mandrel rotates 360°;

[0034] Figure 10 is Figure 8 an enlarged schematic diagram of part A in

[0035] Reference numerals: 1—copper tube; 2—mandrel; 3—copper mesh sleeve; 4—reaming block; 5—docking interface; 6—drive rod; 7—first boss; 8—second boss; 9—third boss; 10—fourth boss; 11—first inclined surface; 12—second inclined surface; 13—third inclined surface; 14—fourth inclined surface; 15—rotary table; 16—first drive mechanism; 17—second drive mechanism; 18—moving frame; 19—first lifting mechanism; 20—positioning seat; 21—support; 22—positioning block; 23—second lifting mechanism; 24—translation drive mechanism; 25—winding shaft; 26—upper plate; 27—lower plate; 28—rectangular hole; 29—connecting block; 30—connecting column. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] The heat pipe of the present invention, as Figure 2 shown, includes a copper tube 1 and a copper mesh capillary layer provided on the inner wall of the copper tube 1. The copper mesh capillary layer is a copper mesh sleeve 3. After the copper mesh sleeve 3 is inserted into the copper tube 1, the copper mesh capillary layer is obtained.

[0038] The installation method of the copper mesh is specifically as Figure 1 shown, and includes the following steps:

[0039] S1. Cut the copper mesh according to the size of the copper tube 1 to obtain a copper mesh sheet. The length of the copper mesh sheet is the same as the length of the copper tube 1, and the width of the copper mesh sheet is π times the inner diameter of the copper tube 1. The copper mesh is prepared by an existing process and is a relatively large sheet of copper mesh. After cutting, a copper mesh sheet with a size adapted to the copper tube 1 is obtained.

[0040] S2. Wind the copper mesh sheet around the mandrel 2 to form a copper mesh sleeve 3, and one side edge of the copper mesh sheet covers the other side edge, so that the outer diameter of the copper mesh sleeve 3 is smaller than the inner diameter of the copper tube 1. The obtained wound copper mesh sleeve 3 is as Figure 3 shown, and there is an overlapping part on both sides of the copper mesh sleeve 3. If the copper mesh sheet is just wound into a regular cylinder and the two side edges of the copper mesh sheet are spliced, then the outer diameter of the copper mesh sleeve 3 should be equal to the inner diameter of the copper tube 1. The copper mesh sleeve 3 is not easy to be inserted into the copper tube 1, and it is also difficult to ensure that the copper mesh sleeve 3 is tightly attached to the inner wall of the copper tube 1. Therefore, in the present invention, a mandrel 2 with an outer diameter smaller than that of the traditional mandrel is used to appropriately reduce the inner and outer diameters of the copper mesh sleeve 3. When the copper mesh sleeve 3 is inserted into the copper tube 1, there is a certain gap between the copper mesh sleeve 3 and the inner wall of the copper tube 1, the insertion resistance is very small, and there is no friction, which can effectively prevent the copper mesh sleeve 3 from being worn.

[0041] S3. Insert the mandrel 2 together with the copper mesh sleeve 3 into the interior of the copper tube 1. The mandrel 2 is preferably coaxial with the copper tube 1. After insertion, there is a gap between the copper mesh sleeve 3 and the inner wall of the copper tube 1, and both ends of the copper mesh sleeve 3 are aligned with both ends of the copper tube 1.

[0042] S4. Ream the copper mesh sleeve 3 to make it fit the inner wall of the copper tube 1, and then extract the mandrel 2.

[0043] Since the outer diameter of the copper mesh sleeve 3 is smaller than the inner diameter of the copper tube 1, in order to ensure that the copper mesh sleeve 3 fits the copper tube 1 and to transform the copper mesh sleeve 3 into a regular cylindrical shape, it is necessary to ream the copper mesh sleeve 3. During the reaming process, as Figure 4 shown, Figure 4 the arrows in it indicate the movement directions of various parts of the copper mesh sleeve 3. Apply a radial pressure to the inner wall of the copper mesh sleeve 3 to push the side wall of the copper mesh sleeve 3 towards the inner wall of the copper tube 1. The inner and outer diameters of the copper mesh sleeve 3 increase, and the outer wall of the copper mesh sleeve 3 can gradually fit the inner wall of the copper tube 1. The edge parts on both sides of the copper mesh sleeve 3 make relative sliding movements along the circumferential direction of the copper mesh sleeve 3, and the overlapping parts of the edges gradually decrease. When the outer diameter of the copper mesh sleeve 3 is the same as the inner diameter of the copper tube 1, the two sides of the copper mesh sleeve 3 are butted to form a butting interface 5, that is, the heat pipe as Figure 2 shown is obtained.

[0044] In the present invention, the mandrel 2 can be extracted before reaming, and then a reaming tool is inserted into the copper mesh sleeve 3 for reaming. However, since the copper mesh sleeve 3 is curled and wound around the outer wall of the mandrel 2, there is a frictional resistance between the copper mesh sleeve 3 and the mandrel 2 when the mandrel 2 is extracted, which is also likely to cause damage to the copper mesh sleeve 3. The traditional copper mesh installation process also has the problem of difficult extraction of the mandrel.

[0045] Therefore, the present invention modifies the mandrel 2 so that the mandrel 2 not only has the functions of the traditional mandrel 2 but also serves as a reaming tool at the same time. After being inserted, reaming can be carried out immediately, improving the convenience of copper mesh installation. After reaming, the mandrel 2 is extracted to solve the problem of difficult extraction of the mandrel 2.

[0046] Specifically, as Figure 5 shown, the mandrel 2 is a hollow rod with open ends at both ends. A plurality of axially extending positioning grooves are provided on the outer wall of the mandrel 2, and the positioning grooves are evenly distributed around the center line of the mandrel 2. A reaming block 4 is arranged in each positioning groove, and the reaming block 4 is in radial sliding fit with the positioning groove in the mandrel 2. When a radial pressure is applied to the reaming block 4, the reaming block 4 can move radially in the positioning groove, as Figure 4 shown. The reaming block 4 is connected with a reaming driving assembly, and the reaming driving assembly is used to drive the reaming block 4 to move radially.

[0047] In step S2, the reaming block 4 is located in the positioning groove and does not affect the curling of the copper mesh sheet.

[0048] In step S4, the reaming driving assembly drives each reaming block 4 to move radially outwards synchronously. After the reaming block 4 contacts the copper mesh sleeve 3, it pushes the copper mesh sleeve 3 to tightly fit the inner wall of the copper tube 1 to complete the reaming. Then the reaming driving assembly drives each reaming block 4 back into the positioning groove, and the mandrel 2 is extracted.

[0049] After the copper mesh sleeve 3 is reamed, the inner wall of the copper mesh sleeve 3 is separated from the mandrel 2, and there is a gap between the inner wall of the copper mesh sleeve 3 and the mandrel 2. After the reaming block 4 returns to the positioning groove, there is also a gap between the inner wall of the copper mesh sleeve 3 and the reaming block 4. Therefore, the mandrel 2 can be easily and quickly withdrawn. The mandrel 2 does not contact the copper mesh sleeve 3, and there is no frictional resistance, which can effectively prevent the copper mesh sleeve 3 from being worn.

[0050] In addition, after the reaming block 4 reams the hole, it can press the copper mesh sleeve 3 against the inner wall of the copper pipe 1, ensuring that the copper mesh sleeve 3 is closely attached to the inner wall of the copper pipe 1, and further ensuring the heat conduction efficiency of the heat pipe.

[0051] As a preferred embodiment, in step S2, after the copper mesh is curled on the mandrel 2, the two side edges of the copper mesh are located between two adjacent positioning grooves. During reaming, the reaming block 4 does not contact the two side edges of the copper mesh sleeve 3, which can ensure that the two side edges of the copper mesh sleeve 3 move circumferentially in opposite directions, eliminating the overlapping part and making the two side edges of the copper mesh sleeve 3 butt joint. After butt joint, it is difficult for the two side edges of the copper mesh sleeve 3 to be closely attached to the inner wall of the copper pipe 1. Therefore, in step S4, after the reaming drive assembly drives each reaming block 4 to ream the hole and return to the positioning groove, the mandrel 2 rotates by a set angle so that one of the positioning grooves is aligned with the butt joint interface 5 of the two side edges of the copper mesh sleeve 3. Then, the reaming drive assembly is used to drive each reaming block 4 to move radially outward synchronously again, and the reaming block 4 presses the copper mesh sleeve 3 and the butt joint interface 5 again. When the reaming block 4 reams the hole, it contacts and presses part of the copper mesh sleeve 3. When the reaming block 4 presses again, it contacts and presses another part of the copper mesh sleeve 3, which can ensure that the entire copper mesh sleeve 3 and the butt joint interface 5 are better attached to the inner wall of the copper pipe 1.

[0052] As Figure 5 shown, the reaming drive assembly specifically includes a drive rod 6 arranged inside the mandrel 2. The diameter of the drive rod 6 is smaller than the inner diameter of the mandrel 2, so that there is a gap between the drive rod 6 and the mandrel 2. A plurality of first bosses 7 and a plurality of second bosses 8 are arranged on the outer wall of the drive rod 6. A third boss 9 and a fourth boss 10 are arranged on the inner wall of each reaming block 4. The number of the third bosses 9 is the same as that of the first bosses 7, and the number of the fourth bosses 10 is the same as that of the second bosses 8. The number of the first bosses 7, the second bosses 8, the third bosses 9 and the fourth bosses 10 can all be 2, and the first bosses 7 and the second bosses 8 are alternately arranged on the drive rod 6, and the third bosses 9 and the fourth bosses 10 are alternately arranged on the inner wall of the reaming block 4.

[0053] The first boss 7 is provided with a first inclined surface 11 on the side wall facing the reaming block 4, and the third boss 9 is provided with a second inclined surface 12 on the side wall facing the driving rod 6; both the second boss 8 and the fourth boss 10 include a radial section and an axial section, and the radial section and the axial section are distributed in an L shape. The side wall of the axial section of the second boss 8 facing the driving rod 6 is provided with a third inclined surface 13, and the side wall of the axial section of the fourth boss 10 facing the reaming block 4 is provided with a fourth inclined surface 14. The fourth inclined surface 14 is parallel to the first inclined surface 11, and the third inclined surface 13 is parallel to the second inclined surface 12. When the driving rod 6 drives the first boss 7 to axially move towards the third boss 9, the first inclined surface 11 fits against the second inclined surface 12; when the driving rod 6 drives the second boss 8 to axially move towards the fourth boss 10, the axial section of the second boss 8 enters the inner side of the axial section of the fourth boss 10, and the third inclined surface 13 fits against the fourth inclined surface 14.

[0054] As Figure 6 shown, when the driving rod 6 is axially pushed to move, when the driving rod 6 drives the first boss 7 to axially move towards the third boss 9, the first inclined surface 11 fits against the second inclined surface 12. When the first boss 7 continues to move, the first inclined surface 11 can push the third boss 9 together with the reaming block 4 to move radially outwards by a certain distance, completing the reaming action. After reaming, when the driving rod 6 is axially pushed to move in the reverse direction, the driving rod 6 drives the second boss 8 to axially move towards the fourth boss 10. The axial section of the second boss 8 enters the inner side of the axial section of the fourth boss 10, and the third inclined surface 13 comes into contact with the fourth inclined surface 14. As Figure 7 shown, the third inclined surface 13 pushes the fourth boss 10 together with the reaming block 4 to move radially inwards, so that the reaming block 4 returns to the positioning groove.

[0055] It can be seen that only by controlling the axial movement of the driving rod 6 can the movement of the reaming block 4 be controlled. In order to facilitate the control of the axial movement of the driving rod 6, the length of the driving rod 6 is greater than the length of the mandrel 2, so that both ends of the driving rod 6 are located outside the mandrel 2. The outer wall of the driving rod 6 can be connected to the inner wall of the mandrel 2 through splines, and when the mandrel 2 rotates, it can drive the driving rod 6 to rotate synchronously.

[0056] The above steps can be carried out manually. In order to improve production efficiency, the present invention installs the mandrel 2 on an installation machine. As Figure 8 shown, the installation machine is provided with a horizontal turntable 15. The turntable 15 is connected to a first driving mechanism 16 for driving the turntable 15 to rotate, and the first driving mechanism 16 can adopt a servo motor. Below the turntable 15, there are a wire coiling station and a copper mesh installation station. The wire coiling station is used for coiling the copper mesh sheet on the mandrel 2, that is, performing step S2; the copper mesh installation station is used for inserting the mandrel 2 together with the copper mesh sleeve 3 into the copper tube 2 and reaming, that is, performing steps S3 and S4.

[0057] Both the wire winding station and the copper mesh installation station are provided with mandrels 2. The mandrels 2 are vertically arranged, and the upper ends of the mandrels 2 are installed on the turntable 15 through bearings. Each mandrel 2 is connected with a second driving mechanism 17 for driving the mandrel 2 to rotate. The second driving mechanism 17 can adopt a servo motor. The turntable 15 drives each mandrel 2 to continuously reach the wire winding station and the copper mesh installation station, and the curling of the copper mesh sheet and the installation of the copper mesh can be carried out simultaneously, improving the efficiency.

[0058] Since the copper mesh sheet is a mesh sheet with a very thin thickness and a relatively small width, it is difficult for existing various automatic curling devices to achieve rapid wire winding. Therefore, the present invention adopts a combination of manual and equipment to wind the wire. Specifically, the wire winding station is provided with a moving frame 18. The moving frame 18 is connected with a translation driving mechanism 24. A vertical winding shaft 25 is arranged on the moving frame 18. Both ends of the winding shaft 25 are installed on the moving frame 18 through bearings. A curling gap is arranged between the winding shaft 25 and the mandrel 2 at the wire winding station. The translation driving mechanism 24 can be devices such as a cylinder or a linear motor, and can push the moving frame 18 and the winding shaft 25 to move towards the mandrel 2 or move away from the mandrel 2, so as to adjust the size of the curling gap. In step S2, one side edge of the copper mesh sheet is manually inserted into the curling gap, and the translation driving mechanism 24 pushes the moving frame 18 to move towards the mandrel 2, so that the winding shaft 25 presses the side edge of the copper mesh sheet. Then, the second driving mechanism 17 drives the mandrel 2 to rotate 360°, and curls the copper mesh sheet on the mandrel 2. During the curling process, the staff holds the copper mesh sheet by hand to ensure that the copper mesh sheet can be stably wound around the mandrel 2 for one circle. After the mandrel 2 rotates 360°, there is still an extra part of the copper mesh sheet that is not curled on the mandrel 2, as Figure 9 shown. Then, the translation driving mechanism 24 is used to push the moving frame 18 to reset, the winding shaft 25 releases the side edge of the copper mesh sheet, and the staff manually curls the uncurled part of the copper mesh sheet on the mandrel 2 to form a copper mesh sleeve 3. The copper mesh sheet is relatively thin and has low strength, and the staff can quickly complete the curling of the uncurled part.

[0059] A first lifting mechanism 19 is arranged below the copper mesh installation station. The first lifting mechanism 19 can adopt devices such as a hydraulic cylinder. A positioning seat 20 is arranged at the top of the first lifting mechanism 19. A positioning block 22 is arranged on the positioning seat 20 through a bracket 21. A copper tube positioning mechanism is arranged inside the positioning block 22. The copper tube positioning mechanism can adopt various existing columnar part clamping mechanisms. A second lifting mechanism 23 is arranged on the positioning seat 20 below the positioning block 22. The second lifting mechanism 23 can adopt devices such as a cylinder. A connecting mechanism for connecting the driving rod 6 is arranged at the upper end of the second lifting mechanism 23.

[0060] After the copper mesh sleeve 3 is formed, the first driving mechanism 16 drives the turntable 15 to rotate by a set angle, conveying the copper mesh sleeve 3 together with the mandrel 2 to the copper mesh installation station. At the same time, the copper pipe 1 is vertically fixed to the positioning block 22. After the copper pipe 1 is fixed, it is coaxial with the mandrel 2. Then, the first lifting mechanism 19 is used to push the positioning seat 20 and the copper pipe 1 upward, so that the mandrel 2 penetrates through the copper pipe 1. Then, the connecting mechanism connects the second lifting mechanism 23 with the driving rod 6, and the second lifting mechanism 23 is used to drive the driving rod 6 to axially move to complete the reaming of the copper mesh sleeve 3. After reaming, the second driving mechanism 17 drives the mandrel 2 to rotate by a set angle, and the second lifting mechanism 23 drives the driving rod 6 to axially move again to press the remaining parts of the copper mesh sleeve 3 and the docking interface 5.

[0061] After the installation is completed, the connection between the driving rod 6 and the second lifting mechanism 23 is released. The first lifting mechanism 19 drives the positioning seat 20, the copper pipe 1, etc. to move downward as a whole, so that the copper pipe 1 is separated from the mandrel 2, and then the copper pipe 1 can be removed from the positioning block 22. The mandrel 2 moves to the mesh winding station along with the turntable 15.

[0062] In the present invention, as Figure 10 shown, the connecting mechanism includes an upper plate 26 and a lower plate 27. There is a spacing between the upper plate 26 and the lower plate 27. The spacing between the upper plate 26 and the lower plate 27 is slightly larger than the thickness of the connecting block 29. The upper plate 26 and the lower plate 27 are integrally connected by connecting columns 30. The lower plate 27 is fixedly connected to the second lifting mechanism 23. A rectangular hole 28 is provided on the upper plate 26. A rectangular connecting block 29 is provided at the lower end of the driving rod 6. The length of the connecting block 29 is less than the length of the rectangular hole 28, the width of the connecting block 29 is less than the width of the rectangular hole 28, the length of the connecting block 29 is greater than the width of the rectangular hole 28, and the length of the connecting block 29 is less than the inner diameter of the copper pipe 1 to ensure that the connecting block 29 can pass through the copper pipe 1.

[0063] When the first lifting mechanism 19 pushes the positioning seat 20 and the copper pipe 1 upward, the length direction of the connecting block 29 is parallel to the length direction of the rectangular hole 28. The connecting block 29 passes through the rectangular hole 28 and reaches between the upper plate 26 and the lower plate 27. Then, the second driving mechanism 17 is used to drive the mandrel 2 and the driving rod 6 to rotate as a whole by a set angle, so that the length direction of the connecting block 29 forms an acute angle, a right angle or an obtuse angle with the length direction of the rectangular hole 28. At this time, the connecting block 29 cannot pass through the rectangular hole 28. When the second lifting mechanism 23 drives the upper plate 26 and the lower plate 27 to lift and lower, the driving rod 6 can be driven to axially move. After the copper mesh is installed, the second driving mechanism 17 drives the mandrel 2 and the driving rod 6 to rotate, so that the connecting block 29 returns to the initial angle, that is, the length direction of the connecting block 29 is parallel to the length direction of the rectangular hole 28. When the positioning seat 20 moves downward, the connecting block 29 can be separated from the rectangular hole 28 and the connection with the connecting mechanism is released.

[0064] In the present invention, in order to improve the pressing effect of the copper mesh sleeve 3, the outer wall of the reaming block 4 is an arc-shaped wall, and the diameter of the arc-shaped wall is the same as the inner hole diameter of the copper mesh sleeve 3 after reaming, which can ensure full contact between the outer wall of the reaming block 4 and the copper mesh sleeve 3, and the copper mesh sleeve 3 fits better with the inner wall of the copper tube 1.

[0065] There are 4 reaming blocks 4, and it can also be 3, 5, 6, etc.

[0066] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A copper mesh installation method, characterized in that: The following steps are involved: S1, cutting the copper mesh according to the size of the copper tube (1) to obtain a copper mesh sheet, wherein the length of the copper mesh sheet is the same as the length of the copper tube (1), and the width of the copper mesh sheet is π times the diameter of the inner hole of the copper tube (1); S2, curling the copper mesh onto the core rod (2) to form a copper mesh sleeve (3), with one side edge of the copper mesh covering the other side edge, so that the outer diameter of the copper mesh sleeve (3) is smaller than the inner diameter of the copper tube (1); S3, inserting the mandrel (2) together with the copper mesh sleeve (3) into the copper tube (1); S4, expanding the copper mesh sleeve (3) so that the copper mesh sleeve (3) fits the inner wall of the copper tube (1), and pulling out the core rod (2); The core rod (2) is a hollow rod, and the outer wall of the core rod (2) is provided with a plurality of axially extending positioning grooves, the positioning grooves are evenly distributed around the center line of the core rod (2), and a hole expansion block (4) is provided in each positioning groove, the hole expansion block (4) and the positioning groove are radially slidably matched with each other in the core rod (2), and the hole expansion block (4) is connected to a hole expansion drive assembly; In step S2, the hole enlarging block (4) is located in the positioning groove; In step S4, the hole expansion drive assembly drives each hole expansion block (4) to move radially outward synchronously, and after the hole expansion block (4) contacts the copper mesh sleeve (3), the copper mesh sleeve (3) is pushed to be close to the inner wall of the copper tube (1); then the hole expansion drive assembly drives each hole expansion block (4) back into the positioning groove to extract the core rod (2); In step S2, after the copper mesh is curled on the core rod (2), two side edges of the copper mesh are located between two adjacent positioning grooves; In step S4, after the hole expansion drive assembly drives each hole expansion block (4) back into the positioning groove, the core rod (2) rotates at a set angle so that one of the positioning grooves is aligned with the docking interface (5) on both sides of the copper mesh sleeve (3); the hole expansion drive assembly is used to drive each hole expansion block (4) to move radially outward synchronously again, and the hole expansion block (4) is pressed against the copper mesh sleeve (3) and the docking interface (5) again; The reaming drive assembly comprises a driving rod (6) arranged inside the core rod (2), the outer wall of the driving rod (6) is provided with a plurality of first bosses (7) and a plurality of second bosses (8), the inner wall of each reaming block (4) is provided with a third boss (9) and a fourth boss (10), the number of the third bosses (9) is the same as the number of the first bosses (7), and the number of the fourth bosses (10) is the same as the number of the second bosses (8); the first boss (7) is provided with a first inclined surface (11) on the side wall facing the reaming block (4), and the third boss (9) is provided with a second inclined surface (12) on the side wall facing the driving rod (6); the second boss (8) and the fourth boss (10) both comprise a radial section and an axial section, the radial section and the axial section The axial sections of the second boss (8) are distributed in an L-shape, the side wall of the axial section of the second boss (8) facing the driving rod (6) is provided with a third inclined surface (13), and the side wall of the axial section of the fourth boss (10) facing the reaming block (4) is provided with a fourth inclined surface (14), the fourth inclined surface (14) is parallel to the first inclined surface (11), and the third inclined surface (13) is parallel to the second inclined surface (12); when the driving rod (6) drives the first boss (7) to move axially toward the third boss (9), the first inclined surface (11) fits the second inclined surface (12); when the driving rod (6) drives the second boss (8) to move axially toward the fourth boss (10), the axial section of the second boss (8) enters the inner side of the axial section of the fourth boss (10), and the third inclined surface (13) fits the fourth inclined surface (14).

2. The copper mesh installation method according to claim 1, characterized in that: The mandrel (2) is installed on the installation machine. The installation machine is provided with a horizontal turntable (15). The turntable (15) is connected to a first driving mechanism (16) for driving the turntable (15) to rotate. A mesh rolling station and a copper mesh installation station are provided below the turntable (15). The mesh rolling station and the copper mesh installation station are both provided with a mandrel (2). The mandrel (2) is vertically arranged, and the upper end of the mandrel (2) is installed on the turntable (15) through a bearing. Each mandrel (2) is connected to a second driving mechanism (17) for driving the mandrel (2) to rotate. The mesh rolling station is provided with a movable frame (18). The movable frame (18) is connected to a translation driving mechanism (24). A vertical movement mechanism (24) is provided on the movable frame (18). A straight curling shaft (25), both ends of which are mounted on a movable frame (18) via bearings, and a curling gap is provided between the curling shaft (25) and a core rod (2) of a mesh rolling station; a first lifting mechanism (19) is provided below the copper mesh installation station, a positioning seat (20) is provided at the top of the first lifting mechanism (19), a positioning block (22) is provided on the positioning seat (20) via a bracket (21), and a copper tube positioning mechanism is provided in the positioning block (22); a second lifting mechanism (23) is provided on the positioning seat (20) below the positioning block (22), and a connecting mechanism for connecting a driving rod (6) is provided at the upper end of the second lifting mechanism (23); In step S2, one side of the copper mesh is manually inserted into the curling gap, the translation drive mechanism (24) pushes the movable frame (18) to move in the direction of the core rod (2), so that the curling shaft (25) presses the side of the copper mesh, and then the second drive mechanism (17) drives the core rod (2) to rotate 360 ​​degrees, so that the copper mesh is curled on the core rod (2), and then the translation drive mechanism (24) pushes the movable frame (18) to reset, and the uncurled part of the copper mesh is manually curled to form a copper mesh sleeve (3); The first driving mechanism (16) drives the rotating disk (15) to rotate at a set angle, transports the copper mesh sleeve (3) together with the core rod (2) to the copper mesh installation station, and vertically fixes the copper tube (1) on the positioning block (22), and then uses the first lifting mechanism (19) to push the positioning seat (20) and the copper tube (1) to move upward, so that the core rod (2) penetrates the copper tube (1); then the connecting mechanism connects the second lifting mechanism (23) to the driving rod (6), and uses the second lifting mechanism (23) to drive the driving rod (6) to move axially, thereby completing the expansion of the copper mesh sleeve (3).

3. The copper mesh installation method according to claim 2, characterized in that: The connecting mechanism comprises an upper plate (26) and a lower plate (27), wherein a distance is provided between the upper plate (26) and the lower plate (27), and the upper plate (26) and the lower plate (27) are connected as a whole via a connecting column (30), wherein the lower plate (27) is fixedly connected to the second lifting mechanism (23), wherein a rectangular hole (28) is provided on the upper plate (26), and a rectangular connecting block (29) is provided at the lower end of the driving rod (6), wherein the length of the connecting block (29) is smaller than the length of the rectangular hole (28), the width of the connecting block (29) is smaller than the width of the rectangular hole (28), and the length of the connecting block (29) is larger than the width of the rectangular hole (28); When the first lifting mechanism (19) pushes the positioning seat (20) and the copper tube (1) to move upward, the length direction of the connecting block (29) is parallel to the length direction of the rectangular hole (28), and the connecting block (29) passes through the rectangular hole (28) and reaches between the upper plate (26) and the lower plate (27). Then, the second driving mechanism (17) drives the core rod (2) and the driving rod (6) to rotate as a whole at a set angle, so that the length direction of the connecting block (29) forms an acute angle, a right angle or an obtuse angle with the length direction of the rectangular hole (28). When the second lifting mechanism (23) is lifted or lowered, it can drive the driving rod (6) to move axially.

4. The copper mesh installation method according to claim 1, characterized in that: The outer wall of the hole-expanding block (4) is an arc-shaped wall, and the diameter of the arc-shaped wall is consistent with the inner hole diameter of the copper mesh sleeve (3) after hole expansion.

5. The copper mesh installation method according to claim 1, characterized in that: There are four hole expansion blocks (4).

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