Radiator heat pipe seamless rolling riveting device

Abstract

The present invention provides a radiator heat pipe seamless rolling riveting device, which makes it possible to have no gap between the arranged heat pipes and the radiator, and no gap between adjacent heat pipes, so that there is no gap on the exposed heat dissipation contact surface of the heat pipe, ensuring that the contact surface between the radiator and the chip is effective and reliable, with a large contact area, and ensuring sufficient and reliable heat dissipation. The upper surface of the frame is provided with a guide rail arranged along the length direction, and the mold positioning seat is supported on the guide rail arrangement through a guide rail pair. The upper surface of the mold positioning seat is fixed with a product positioning mold, and the product positioning mold is used to fix the radiator. The surface area with the inner groove of the bottom plate BASE of the radiator is arranged upward, and the heat pipe is arranged in the installation groove. The heat pipe is convex on the upper surface of the bottom plate BASE in the initial state. The mold positioning seat is externally connected to the piston end of the hydraulic cylinder, and the movement direction of the piston end of the hydraulic cylinder is parallel to the guide rail arrangement. The upper surface of the frame is also provided with an upper mold mounting bracket.

Description

Technical Field

[0001] The invention relates to the technical field of radiators, in particular to a seamless rolling and riveting device for heat conducting pipes of radiators. Background Art

[0002] With the continuous development of science and technology, chip technology has advanced rapidly, electronic equipment has become intelligent, and power consumption has become higher and higher. Radiators play a big role in the entire electronic products and intelligent electronic equipment. Therefore, the requirements and technology for radiators are getting higher and higher. In order to better solve the heat conduction efficiency between the chip and the radiator, the current market trend is that the heat pipe on the radiator is in direct contact with the chip, which reduces the heat conduction medium on the contact surface between the heat pipe on the radiator and the chip to a certain extent, greatly reduces the material cost and material thermal impedance, and improves the heat dissipation performance.

[0003] However, due to the technical limitations of the heat pipe flattening process in the prior art, it is impossible to overcome the problem, which results in no R angle phenomenon after the heat pipe is flattened or a gap phenomenon between the heat pipes when they are arranged side by side, resulting in a gap phenomenon between the contact surfaces of the heat pipes of the radiator when the heat pipes are aligned. Therefore, there is a gap phenomenon between the contact surface of the heat pipe of the radiator and the chip, the contact area between the chip surface and the radiator is reduced, the heat dissipation performance is reduced, and the ideal effect cannot be achieved; the height of the existing heat pipe is consistent with the height of the mounting groove, so that an unrepairable gap is left after the assembly is completed. In order to fill the corresponding gap, the height of the heat pipe needs to be designed to be higher than the height of the mounting groove, and then the raised part is pressed into the corresponding gap. However, during the pressing process of the existing device, the heat pipe is easily broken due to large deformation, and cannot meet production needs. Summary of the invention

[0004] In view of the above problems, the present invention provides a seamless rolling and riveting device for the heat pipes of the radiator, which ensures that there is no gap between the arranged heat pipes and the radiator, and there is no gap between adjacent heat pipes, so that there is no gap on the exposed heat dissipation contact surface of the heat pipes, thereby ensuring that the contact surface between the radiator and the chip is effective and reliable, with a large contact area, thereby ensuring sufficient and reliable heat dissipation.

[0005] The radiator heat pipe seamless rolling riveting device is characterized in that: it comprises a frame, the upper surface of the frame is provided with a guide rail arranged along the length direction, the mold positioning seat is supported on the guide rail arrangement through a guide rail pair, the upper surface of the mold positioning seat is fixedly provided with a product positioning mold, and the product positioning mold is used to fix the radiator, the surface area with the inner groove of the base plate BASE of the radiator is arranged upward, and the heat conducting pipe is arranged in the mounting groove, and the heat conducting pipe is convex on the upper surface of the base plate BASE in the initial state, the mold positioning seat is externally connected to the piston end of the oil hydraulic cylinder, and the movement direction of the piston end of the oil hydraulic cylinder is parallel to the guide rail arrangement, the upper surface of the frame is also provided with an upper mold mounting bracket, and the lower surface of the upper cross plate of the upper mold mounting bracket is fixedly provided with a roller upper mold frame, and the roller upper mold frame is inserted and positioned in the corresponding positioning hole of the upper cross plate by a convex screw rod and locked by a bolt, and the roller A downwardly convex connecting plate is provided at the lower part of the upper mold frame, and first connecting holes are provided on both sides of the connecting plate. A plurality of spaced mounting grooves are built-in in the length direction of the connecting plate, and a plurality of upwardly convex guide blocks of the roller fixing template are respectively embedded in the mounting grooves at corresponding positions, and the two sides are respectively mounted on the end walls of the mounting grooves through horizontal springs, and corresponding second connecting holes are provided on both sides of the upper part of the roller fixing template corresponding to the roller end, and waist-shaped holes are provided on the connecting baffles on both sides respectively corresponding to the positions of the first connecting hole and the second connecting hole, and the roller fixing template and the connecting plate are fixedly connected with bolts through the waist-shaped holes of the connecting baffles, and a plurality of rollers of the same diameter arranged at intervals and with the lowest point height decreasing in a step-like manner are arranged in sequence on the lower surface of the roller fixing template along the riveting direction of the mold positioning seat of the track, and the lowest point of the roller at the lowest point is flush with the exposed plane of the inner groove of the base plate BASE.

[0006] It is further characterized by:

[0007] The upper surface of the roller upper mold frame is provided with a plurality of convex positioning pins, and the upper horizontal plate is provided with positioning and mounting holes at positions corresponding to the convex positioning pins, and the convex positioning pins are respectively inserted into the positioning and mounting holes. The upper surface of the roller upper mold frame is also provided with a plurality of convex first springs, and the convex first springs are mounted on the lower surface of the upper horizontal plate. The convex positioning pins ensure the accuracy and stability of the upper and lower positioning front and back, and avoid the rolling riveting assembly error resulting in each rolling riveting not being in place, and the rolling riveting skewing and tilting to the left and right, which effectively improves the rolling riveting stability of the product; the first spring enables vertical elastic riveting to avoid traditional hard pressing. Hard rolling cannot avoid the undesirable phenomena such as the left and right tilting of the heat pipe plane of the radiator and the crushing of the heat pipe. The soft rolling riveting is flexibly intervened to reduce the upper and lower hard forces so that the left and right balance of the rolling riveting is excellent, and the up and down bumping force absorbed will not be transferred to the product heat pipe, so that the flatness of the product heat pipe is greatly improved;

[0008] The roller fixed template is adjusted and arranged according to the actual design, and its replacement is quick and convenient, ensuring the versatility of the structure;

[0009] Roller mounting holes with notches are respectively provided on both sides of the lower part of the roller fixing template, and the central axis points of the roller mounting holes are stepped down with the same value to ensure that the riveting amount of adjacent rollers is the same;

[0010] The roller diameter and the number of rollers set on the roller fixing template are adjusted and set according to the product;

[0011] The shape of the roller is specifically a straight roller, a convex roller, a concave roller, or a gear roller;

[0012] The starting force of the hydraulic cylinder is uniform and controllable, and the speed is uniform and adjustable. The product has uniform force and speed and stable quality during the entire rolling and riveting process, and the rolling surface is flat and smooth. It avoids the instability of insufficient pressure and too fast or too slow in traditional methods, as well as the intermittent acceleration of instantaneous starting. Accelerated rolling and decelerated rolling are easy to damage the product and cause the rolling to get stuck halfway;

[0013] A hydraulic station is arranged in the inner cavity at the bottom of the frame, the hydraulic station is connected to the oil hydraulic cylinder arrangement, and the hydraulic station is specifically an air-cooled hydraulic station;

[0014] The frame is also integrated with a distribution box and a two-hand anti-fool switch, and the two-hand anti-fool switch is connected to the hydraulic cylinder arrangement to ensure that no wrong operation occurs.

[0015] After adopting this process, the hydraulic cylinder pushes and pulls the radiator together with the mold positioning seat back and forth at a uniform speed into the roller of the roller fixed template. Since a number of rollers of the same diameter arranged at intervals with the lowest point height decreasing in a step-by-step manner are arranged in sequence on the lower surface of the roller fixed template along the riveting direction of the mold positioning seat of the track, the lowest point of the roller at the lowest point is flush with the exposed plane of the inner groove of the base plate BASE, so that during the entire riveting process of the radiator, the convex part of the rolled heat pipe with roller step stability is riveted to the base plate Base, and since the rollers are arranged in a step-by-step height and the rollers can be elastic up and down and front and back, the step-by-step soft rolling riveting of the heat pipes is ensured, so that the planes of the multiple rows of heat pipes of the radiator are flat, seamless and gapless, and the processing efficiency / quality yield of the radiator is improved; it makes there be no gap between the arranged heat pipes and the radiator, and there is no gap between adjacent heat pipes, so that there is no gap on the exposed heat dissipation contact surface of the heat pipe, ensuring that the contact surface between the radiator and the chip is effective and reliable, the contact area is large, and the heat dissipation is fully and reliably guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2It is a schematic diagram of the three-dimensional structure of the roller upper mold frame of the present invention;

[0018] Figure 3 It is a schematic diagram of the assembly of the roller upper mold frame, the roller fixed mold plate and the roller of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the roller fixed template of the present invention;

[0020] Figure 5 A schematic diagram of a roller applicable to the roller fixing template of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the base plate BASE with heat pipes installed (not riveted);

[0022] Figure 7 This is a schematic diagram of the structure of the base plate BASE with heat pipes installed (press riveting has been completed);

[0023] The names corresponding to the serial numbers in the figure are as follows:

[0024] Frame 1, guide rail 2, mold positioning seat 3, product positioning mold 4, base plate BASE5, inner groove 6, heat pipe 7, hydraulic cylinder 8, piston end 9, upper mold mounting bracket 10, upper cross plate 11, roller upper mold frame 12, screw 13, bolt 14, connecting plate 15, first connecting hole 16, mounting groove 17, roller fixing template 18, upper convex guide block 19, horizontal spring 20, second connecting hole 21, connecting baffle 22, waist-shaped hole 23, roller 24, straight-through roller 241, middle convex roller 242, middle concave roller 243, gear-type roller 244, upper convex positioning pin 25, first spring 26, notch 27, roller mounting hole 28, hydraulic station 29, distribution box 30, two-hand anti-fool switch 31. DETAILED DESCRIPTION

[0025] Radiator heat pipe seamless rolling riveting device, see Figure 1-Figure 4:It includes a frame 1, the upper surface of the frame 1 is provided with a guide rail 2 arranged along the length direction, a mold positioning seat 3 is supported on the guide rail 2 through a guide rail pair, a product positioning mold 4 is fixed on the upper surface of the mold positioning seat 3, and the product positioning mold 4 is used to fix a radiator, and the surface area with an inner groove 6 of the bottom plate BASE5 of the radiator is arranged upward, and a heat pipe 7 is arranged in the installation groove 6. The heat pipe 7 is convex on the upper surface of the bottom plate BASE5 in the initial state, and the mold positioning seat 3 is externally connected to a piston end 9 of a hydraulic cylinder 8, and the piston end 9 of the hydraulic cylinder 8 The movement direction is arranged parallel to the guide rail 2. An upper mold mounting bracket 10 is also provided on the upper surface of the frame 1. A roller upper mold frame 12 is fixed on the lower surface of the upper cross plate 11 of the upper mold mounting bracket 10. The roller upper mold frame 12 is inserted and positioned in the corresponding positioning hole of the upper cross plate through the convex screw 13 and is locked by the bolt 14. A convex connecting plate 15 is provided at the lower part of the roller upper mold frame 12. First connecting holes 16 are provided on both sides of the connecting plate 15. A plurality of spaced mounting grooves 17 are built in the length direction of the connecting plate 15. The roller fixing template 18 is fixed to the roller fixing template 18. A plurality of upper convex guide blocks 19 are respectively embedded in the installation grooves 17 at the corresponding positions, and the two sides are respectively mounted on the end walls of the installation grooves 17 through horizontal springs 20. The use of horizontal springs 20 avoids the traditional hard rolling. Hard rolling is prone to cause the heat pipe surface of the radiator to be sunken, damaged and other undesirable phenomena. Soft rolling riveting is flexible, which reduces the impact inertia and absorbs the impact force without pushing it onto the product heat pipe, so that the flatness of the product heat pipe surface is further improved; the two sides of the upper part of the roller fixing template 18 corresponding to the roller end are provided with corresponding The second connecting hole 21 and the connecting baffles 22 on both sides are provided with waist-shaped holes 23 corresponding to the positions of the first connecting hole 16 and the second connecting hole 21 respectively. Bolts are fixed to the roller fixing template 18 and the connecting plate 15 through the waist-shaped holes of the connecting baffles 22. On the lower surface of the roller fixing template 18, there are arranged in sequence along the riveting direction of the mold positioning seat 3 of the track 2 a number of rollers 24 of the same diameter arranged at intervals with the lowest point height decreasing in a stepwise manner. The lowest point of the roller 24 at the lowest point is flush with the exposed plane of the inner groove 6 of the bottom plate BASE5.

[0026] The upper surface of the roller upper mold frame 12 is provided with a plurality of convex positioning pins 25, and the upper horizontal plate 11 is provided with positioning and mounting holes at positions corresponding to the convex positioning pins 25. The convex positioning pins 25 are respectively inserted into the positioning and mounting holes. The upper surface of the roller upper mold frame 12 is also provided with a plurality of convex first springs 26, which are mounted on the lower surface of the upper horizontal plate 11. The convex positioning pins 25 ensure the accuracy and stability of the upper and lower positioning front and back, and avoid the rolling riveting assembly error resulting in each rolling riveting not being in place, and the rolling riveting skewing and tilting phenomenon, which effectively improves the rolling riveting stability of the product; the first spring 26 enables vertical elastic riveting to avoid traditional hard pressing. Hard rolling cannot avoid the undesirable phenomena such as the left and right tilting of the heat pipe plane of the radiator and the crushing of the heat pipe. The soft rolling riveting is flexibly intervened to reduce the upper and lower hard forces so that the left and right balance of the rolling riveting is excellent, and the up and down bumping force absorbed will not be transferred to the product heat pipe, so that the flatness of the product heat pipe is greatly improved;

[0027] The roller fixed template 18 is adjusted and arranged according to the actual design, and its replacement is quick and convenient, ensuring the versatility of the structure;

[0028] Roller mounting holes 28 with notches 27 are respectively provided on both sides of the lower part of the roller fixing template 18, and the central axis points of the roller mounting holes 28 are stepped down with the same value to ensure that the riveting amount of adjacent rollers 24 is the same;

[0029] The roller diameter and the number of rollers set on the roller fixing template 18 are adjusted according to the product.

[0030] The shapes of the roller 24 are specifically a straight roller 241, a convex roller 242, a concave roller 243, and a gear roller 244;

[0031] The starting force of the hydraulic cylinder 8 is uniform and controllable, and the speed is uniform and adjustable. The product has uniform force and speed throughout the rolling and riveting process, and the rolling surface is flat and smooth. It avoids the instability of insufficient pressure and too fast or too slow pressure, as well as the instantaneous acceleration. Accelerated rolling and decelerated rolling are easy to damage the product and the rolling will get stuck halfway;

[0032] A hydraulic station 29 is arranged in the inner cavity at the bottom of the frame 1, and the hydraulic station 29 is connected to the oil hydraulic cylinder 8, and the hydraulic station is specifically an air-cooled hydraulic station;

[0033] The frame 1 is also integrated with a distribution box 30 and a two-hand anti-fool switch 31. The two-hand anti-fool switch 31 is connected to the hydraulic cylinder 8 to ensure that no wrong operation occurs.

[0034] It solves the problem of seamless arrangement of heat pipes at the contact surface between the heat pipes of the radiator and the chip, so that there are no gaps between the multiple rows of heat pipes on the radiator. The requirements for seamless flatness between the heat pipes and the heat pipe planes are relatively precise. When there is no gap between the heat pipes and the bottom Base, the problem of reducing the contact surface between the radiator and the chip mentioned in the background technology can be effectively solved, and better heat dissipation performance can be achieved. An adjustable screw and an upper convex positioning pin are arranged between the roller upper mold frame and the upper horizontal plate to form adjustability up and down;

[0035] The seamless rolling riveting device for the heat pipe of the radiator ensures that the heat pipe has no dents, crushing injuries, or damage. The R angle gaps between multiple rows of heat pipes are eliminated to make them seamless and flat. A horizontal spring is set between the roller fixed template and the roller upper mold frame, and a first spring is set between the roller upper mold frame and the upper cross plate, so that the heat pipe can be flexibly riveted.

[0036] The radiator heat pipe seamless rolling riveting device has a uniform rolling process and a sufficiently uniform force throughout the entire process, and uses an oil cylinder to drive the rolling riveting back and forth; the roller pressing amount is stepped riveting, which makes the deformation of a single riveting small, ensuring that the heat pipe will not be damaged by excessive deformation in a single time.

[0037] After adopting this process, the hydraulic cylinder pushes and pulls the radiator together with the mold positioning seat back and forth at a uniform speed into the roller of the roller fixed template. Since a number of rollers of the same diameter arranged at intervals with the lowest point height decreasing in a step-by-step manner are arranged in sequence on the lower surface of the roller fixed template along the riveting direction of the mold positioning seat of the track, the lowest point of the roller at the lowest point is flush with the exposed plane of the inner groove of the base plate BASE, so that during the entire riveting process of the radiator, the convex part of the rolled heat pipe with roller step stability is riveted to the base plate Base, and since the rollers are arranged in a step-by-step height and the rollers can be elastic up and down and front and back, the step-by-step soft rolling riveting of the heat pipes is ensured, so that the planes of the multiple rows of heat pipes of the radiator are flat, seamless and gapless, and the processing efficiency / quality yield of the radiator is improved; it makes there be no gap between the arranged heat pipes and the radiator, and there is no gap between adjacent heat pipes, so that there is no gap on the exposed heat dissipation contact surface of the heat pipe, ensuring that the contact surface between the radiator and the chip is effective and reliable, the contact area is large, and the heat dissipation is fully and reliably guaranteed.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A seamless rolling and riveting device for heat conducting tubes of radiators, characterized in that: The invention comprises a frame, the upper surface of which is provided with a guide rail arranged along the length direction, the mold positioning seat is supported on the guide rail arrangement through a guide rail pair, the upper surface of the mold positioning seat is fixedly provided with a product positioning mold, the product positioning mold is used to fix a radiator, the surface area with an inner groove of the base plate BASE of the radiator is arranged upward, a heat conducting pipe is arranged in the installation groove, and the heat conducting pipe is convex on the upper surface of the base plate BASE in the initial state, the mold positioning seat is externally connected to the piston end of a hydraulic cylinder, and the movement direction of the piston end of the hydraulic cylinder is parallel to the guide rail arrangement, the upper surface of the frame is also provided with an upper mold mounting bracket, the lower surface of the upper horizontal plate of the upper mold mounting bracket is fixedly provided with a roller upper mold frame, the roller upper mold frame is inserted and positioned in the corresponding positioning hole of the upper horizontal plate by a convex screw, and is locked by bolts, and a lower convex screw is provided at the lower part of the roller upper mold frame A connecting plate, wherein two sides of the connecting plate are provided with a first connecting hole, and a plurality of spaced mounting grooves are built in the length direction of the connecting plate, and a plurality of upper convex guide blocks of the roller fixing template are respectively embedded in the mounting grooves at corresponding positions, and the two sides are respectively mounted on the end walls of the mounting grooves through horizontal springs, and the two sides of the roller fixing template corresponding to the upper part of the roller end are provided with corresponding second connecting holes, and the connecting baffles on both sides are respectively provided with waist-shaped holes corresponding to the positions of the first connecting hole and the second connecting hole, and the bolts are fixedly connected to the roller fixing template and the connecting plate through the waist-shaped holes of the connecting baffles, and a plurality of rollers of the same diameter arranged at intervals with the lowest point height decreasing in a step-by-step manner are arranged on the lower surface of the roller fixing template in a sequence along the riveting direction of the mold positioning seat of the track, and the lowest point of the roller at the lowest point is flush with the exposed plane of the inner groove of the bottom plate BASE; The upper surface of the roller upper mold frame is provided with a plurality of upward convex positioning pins, and the upper horizontal plate is provided with positioning mounting holes at positions corresponding to the upper convex positioning pins. The upper convex positioning pins are respectively inserted into the positioning mounting holes. The upper surface of the roller upper mold frame is also provided with a plurality of upward convex first springs, and the upward convex first springs are mounted on the lower surface of the upper horizontal plate.

2. The radiator heat pipe seamless rolling and riveting device according to claim 1, characterized in that: The roller fixing template is adjusted and arranged according to the actual design, and the roller diameter and the number of rollers set on the roller fixing template are adjusted and set according to the product.

3. The radiator heat pipe seamless rolling and riveting device according to claim 1, characterized in that: Roller mounting holes with notches are respectively arranged on both sides of the lower part of the roller fixing template, and the central axis points of the roller mounting holes are stepped down with the same value.

4. The radiator heat pipe seamless rolling and riveting device according to claim 2, characterized in that: The shape of the roller is specifically a straight roller, a convex roller, a concave roller, and a gear roller.

5. The radiator heat pipe seamless rolling and riveting device according to claim 1, characterized in that: The starting force value of the oil hydraulic cylinder is uniform and controllable, and the speed is uniform and adjustable.

6. The radiator heat pipe seamless rolling and riveting device according to claim 1, characterized in that: A hydraulic station is arranged in the inner cavity at the bottom of the frame, and the hydraulic station is connected to the oil pressure cylinder arrangement.

7. The radiator heat pipe seamless rolling and riveting device according to claim 1, characterized in that: The frame is also integrated with a distribution box and a two-hand anti-fool switch, and the two-hand anti-fool switch is connected to the hydraulic cylinder arrangement.

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