A tooth pressing method and device for insert type radiator

Abstract

The present invention belongs to the technical field of heat sink assembly, and specifically relates to a tooth pressing method and device for a plug-in type heat sink. The method is to place the heat sinks on a heat storage substrate in sequence, drive a pressing tool to move downward in the gaps between adjacent heat sinks, and press the teeth to deform them so as to be riveted and fixed with the slots. The device includes an X-axis worktable, a YZ-axis riveting mechanism located above the X-axis worktable, and a pressing tool mechanism fixed on the YZ-axis riveting mechanism. The technical solution provided by the present invention realizes the tooth pressing operation by pressing a fixed point on the teeth of the heat sink through a pressing tool, and changes the method of fixing the pressing distance of the tooth pressing stroke in the prior art to a method of controlling the pressing distance in real time through pressure, which can better adapt to the actual differences in the sizes of different heat sinks and slots, and can be applicable to the processing and production of various shapes of plug-in type heat sinks on the market.

Description

Technical Field

[0001] The invention belongs to the technical field of heat sink assembly, and in particular relates to a tooth pressing method and device for a plug-in type heat sink. Background Art

[0002] Communication equipment, air conditioning and refrigeration equipment, etc. will generate a lot of heat during use. In order to ensure the normal use of the equipment and extend its service life, heat sinks are installed in communication equipment and air conditioning and refrigeration equipment. The heat dissipation structure is generally made of aluminum alloy, including a heat storage substrate and a heat sink arranged with hollow grids on the heat storage substrate. It is mainly divided into direct extrusion molding, stacked sheet type and plug-in sheet type.

[0003] Due to the limitation of the manufacturing process of the extrusion die, it is difficult to achieve a large extrusion tongue ratio (tooth height and tooth spacing), that is, the tooth density is limited, the surface / volume ratio of the radiator cannot be improved, and it is also subject to the limitation of the extrusion equipment, so this process has been gradually eliminated. The stacking type is to process the bottom of each heat sink with a concave and convex structure, and then stack them one by one. The bottom foot is connected by a concave and convex mortise and tenon structure. It can be found that the gaps between the stacking sheets cannot be eliminated, that is, the energy storage effect is poor, and the overall consistency, the bottom is easily deformed by force, and it is not a very ideal structure.

[0004] The radiator structure widely used in the market is the plug-in type. The plug-in type radiator generally includes a heat storage substrate and a plurality of heat sinks fixed on the heat storage substrate. The heat storage substrate is provided with a plurality of slots, and one end of the heat sink is provided with a tooth that is interference fit with the slot. The heat sink is fixedly connected to the heat dissipation base plate by inserting the tooth into the slot.

[0005] The close connection between the heat sink and the thermal storage substrate, as well as the necessary gap between the heat sinks, have a significant impact on the heat dissipation effect. Therefore, the installation method of the heat sink is crucial. The current installation method is to pre-insert the heat sink into the slot, press down a fixed distance from the required drop point so that the heat sink teeth are embedded in the slot. If the vertical bars of the heat sink are tilted, pressing down directly can easily damage the product. Summary of the invention

[0006] The invention provides a tooth pressing method and device for a plug-in type radiator, which are used to solve the problem that the product is easily damaged by the current assembly method.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: a tooth pressing method for the plug-in type heat sink, the plug-in type heat sink includes a heat storage substrate and a plurality of heat sinks fixed on the heat storage substrate, the heat storage substrate is provided with a plurality of slots, one end of the heat sink is provided with a protruding tooth matched with the slot, and the tooth pressing method includes the following steps: placing the heat sinks on the heat storage substrate in sequence, that is, inserting the tooth into the corresponding slot, driving the press cutter to move downward in the gap between adjacent heat sinks, the press cutter squeezes the tooth to deform it so as to be riveted and fixed with the slot, and when the force strength of the press cutter riveting end reaches a preset value, the press cutter stops pressing down and resets to complete a tooth pressing operation. Because the states of matching and inserting each slot and the tooth are different, if the downward stroke is fixed, the pressing will be inconsistent, some are loose and some are tight, and if there is a transition, there may be a risk of crushing the product, and the movement stroke can be controlled by the consistency of the force of the press cutter to ensure the close matching of each tooth and the slot, but there is also the possibility of crushing the product.

[0008] Optionally, the press knife is driven by an oil hydraulic press.

[0009] Optionally, the riveting end of the pressing knife first enters from the middle position of adjacent heat sinks, and then approaches the pressing point of the pressing knife and presses down at the point.

[0010] Optionally, the pressing point of the pressing knife is located at the connection between the insert tooth and the heat sink.

[0011] Optionally, the single heat sink is assembled by one or more tooth pressing operations.

[0012] The present invention also provides a tooth pressing device for a plug-in type heat sink, which includes an X-direction work table, a YZ-direction riveting mechanism located above the X-direction work table, and a knife pressing mechanism fixed on the YZ-direction riveting mechanism, wherein the X-direction work table is used to carry and fix the heat sink, and can make the heat sink move in the X direction, and the YZ-direction riveting mechanism drives the knife pressing mechanism to press the heat sink in the Z direction to complete the tooth pressing operation, and can make the knife pressing mechanism move in the Y direction. The relative movement of the work table and the riveting mechanism can automatically and continuously press the teeth of the heat sink on the entire heat sink.

[0013] Optionally, the X-axis workpiece table includes an operating table, a slideway fixed on the operating table, a moving table arranged on the slideway, and an X-axis motion cylinder connected to the moving table, and the radiator is fixed on the surface of the moving table.

[0014] Optionally, a cylinder support frame is fixed to the side of the operating table, the X-direction motion cylinder is arranged on the cylinder support frame, and a plate-shaped traction plate is arranged on the side of the moving table, and the traction plate is linked with the piston rod of the X-direction motion cylinder. The cylinder support frame and the traction plate with a large contact area can ensure stable and accurate movement of the moving table in the X direction.

[0015] Optionally, the YZ-direction riveting mechanism includes a Z-direction hydraulic press, a guide rail connected to the hydraulic press, a slider disposed in the guide rail, and a Y-direction motion cylinder connected to the slider, and the knife pressing mechanism is fixed on the slider.

[0016] Optionally, the slide block is provided with a plurality of mounting holes, which are convenient for mounting press knives of different sizes.

[0017] Optionally, the pressing knife mechanism includes a sheet pressing knife and a pressure sensor fixedly connected to the riveting mechanism via a fixed block, and the pressure sensor detects the pressure on the riveting end of the pressing knife to determine whether to continue pressing or stop pressing.

[0018] Optionally, the fixed block is divided into a left fixed block and a right fixed block. By adjusting the spacing between the left fixed block and the right fixed block, press knives of different lengths can be loaded, which has stronger adaptability.

[0019] Optionally, the fixed block and the pressing knife are fixedly connected by means of a sliding groove and a draw bar. This method can quickly and conveniently replace the pressing knife.

[0020] The technical solution provided by the present invention realizes the tooth pressing operation by squeezing the fixed points on the insert teeth of the heat sink through a pressing tool, and changes the method of fixing the pressing distance of the tooth pressing stroke in the prior art to a method of controlling the pressing distance in real time through pressure, which can better adapt to the actual differences in different heat sink and slot sizes. This tooth pressing method can realize automatic and continuous operation, greatly improves production efficiency, reduces the occurrence of pressure loss of products, and is suitable for the processing and production of various shapes of insert-type radiators on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a specific implementation mode of the tooth pressing device of the insert type heat sink of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a specific implementation mode of the X-axis workpiece stage of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a specific implementation mode of the YZ-axis workpiece table and the knife pressing mechanism of the present invention;

[0024] Figure 4 is a cross-sectional view of the knife pressing mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the first step of the tooth pressing method in the implementation method;

[0026] Figure 6 Schematic diagram of the movement route of the pressing knife in a gear pressing operation in the implementation method;

[0027] Figure 7 Schematic diagram of Y-direction movement in the implementation method;

[0028] Figure 8 Schematic diagram of X-direction movement in an implementation manner.

[0029] As shown in the figure:

[0030] 10-X-axis workpiece table, 11-operating table, 12-slide, 13-moving table, 14-X-axis motion cylinder, 15-cylinder support frame, 16-traction plate, 20-YZ-axis riveting mechanism, 21-guide rail, 22-slider, 23-Y-axis motion cylinder, 24-mounting hole, 30-knife pressing mechanism, 31-left fixed block, 32-right fixed block, 33-knife pressing, 41-heat storage substrate, 42-heat sink, 43-slot, 44-gear insertion, 45-point position. DETAILED DESCRIPTION

[0031] For ease of understanding, the tooth pressing method and device of the insert-type heat sink are described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation and positional relationship shown in the 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] 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 an indirect connection 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.

[0034] like Figure 1As shown, the tooth pressing device of the insert type heat sink includes an X-axis worktable 10, a YZ-axis riveting mechanism 20 located above the X-axis worktable 10, and a knife pressing mechanism 30 fixed on the YZ-axis riveting mechanism 20. The X-axis worktable 10 is used to carry and fix the heat sink, and can make the heat sink move in the X direction. The YZ-axis riveting mechanism 20 drives the knife pressing mechanism 30 to apply pressure to the heat sink in the Z direction to complete the tooth pressing operation, and can make the knife pressing mechanism move in the Y direction.

[0035] like Figure 2 As shown, the X-axis workpiece table 10 includes an operating table 11, a slide 12 fixed on the operating table 11, a movable table 13 arranged on the slide 12, an X-axis motion cylinder 14 connected to the movable table 13 and a cylinder support frame 15 fixed on the side of the operating table, the radiator is fixed on the surface of the movable table 13, the X-axis motion cylinder 14 is arranged on the cylinder support frame 15, and a plate-shaped traction plate 16 is provided on the side of the movable table 13, and the traction plate 16 is linked to the piston rod of the X-axis motion cylinder 14.

[0036] like Figure 3 As shown, the YZ-direction riveting mechanism 20 includes a Z-direction hydraulic press (not shown), a guide rail 21 connected to the hydraulic press, a slider 22 arranged in the guide rail 21 and a Y-direction motion cylinder 23 connected to the slider 22, the knife pressing mechanism 30 is fixed on the slider 22, and the slider 22 is provided with a plurality of mounting holes 24.

[0037] Continue to see Figure 3 As shown, the pressing knife mechanism 30 includes a left fixed block 31 fixed to the left end of the slider 22, a right fixed block 32 fixed to the right end of the slider 22, a sheet pressing knife 33 fixed under the left fixed block 31 and the right fixed block 32, and a pressure sensor (not shown in the figure). The pressure sensor detects the pressure on the riveting end of the pressing knife 33 and is used to determine whether to continue pressing or stop pressing.

[0038] like Figure 4 As shown, the fixing blocks 31, 32 and the pressing knife 33 are fixedly connected by means of matching sliding grooves and draw bars.

[0039] In order to illustrate the tooth pressing method, the structure of the insert type radiator is described as follows: Figure 5 As shown, the insert-type heat sink includes a heat storage substrate 41 and a plurality of heat sinks 42 fixed on the heat storage substrate 41. The heat storage substrate 41 is provided with a plurality of slots 43, and one end of the heat sink 42 is provided with a protruding insert 44 that cooperates with the slots 43. It should be noted that the structure shown in the figure is only a specific case of the insert-type heat sink. The heat sink spacing, slot size and structure, insert tooth size and structure can be changed according to needs and designs, that is, the technical solution provided by the present invention can be used for various insert-type heat sinks.

[0040] Taking the above-mentioned tooth pressing device of the insert type heat sink as an example, the tooth pressing method of the insert type heat sink includes the following steps: Figure 5 , the heat sink 42 is arranged in parallel on the heat storage substrate 41 in the X direction, that is, the inserting teeth 44 are inserted into the corresponding slots 43; Figure 6 As shown, the pressing knife 33 is driven to enter the middle position of the adjacent heat sink 42, and then approaches the point 50 where the pressing knife 33 is pressed in the direction of the arrow and presses down at the point 45. In this embodiment, the point 45 is located at the connection between the insert tooth 44 and the heat sink 42. The pressing knife 33 presses the insert tooth 44 to deform it so that it is riveted and fixed with the slot 43. When the pressure detector detects that the force strength at the top of the pressing riveting of the pressing knife 33 reaches a preset value, the pressing knife 33 stops pressing down and rises back to the starting position, thereby completing a tooth pressing operation.

[0041] like Figure 7 As shown, in this embodiment, since the heat sink 42 is relatively long, the YZ-axis riveting mechanism 20 drives the pressing mechanism 30 to move to the right end along the Y-axis, and then performs a tooth pressing operation to fix the right side of the heat sink 42 on the heat storage substrate 41.

[0042] like Figure 8 As shown, the X-direction workpiece table 10 drives the heat sink to move along the X direction, so that the pressing knife 33 is located above the next adjacent heat sink to perform the next round of tooth pressing operation.

[0043] It should be pointed out that the X-axis and Y-axis movements can be flexibly changed in sequence according to the distribution and size design requirements of the radiator fins and can be completed through automatic control.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tooth pressing method for a plug-in type heat sink, characterized in that: The tooth pressing method comprises the following steps: placing the heat sinks on the heat storage substrate in sequence, that is, inserting the teeth into the corresponding slots, driving the pressing knife to move downward in the gaps between adjacent heat sinks, the pressing knife pressing the teeth to deform them so as to be riveted and fixed with the slots, and when the force strength at the riveting end of the pressing knife reaches a preset value, the pressing knife stops pressing downward and resets to complete a tooth pressing operation; The riveting end of the press knife first enters from the middle position of the adjacent heat sinks, then approaches the pressing point of the press knife and presses down at the point; The pressing point of the pressing knife is located at the connection between the inserting gear and the heat sink; The invention also relates to a tooth pressing device for a plug-in type heat sink, comprising an X-direction work table, a YZ-direction riveting mechanism located above the X-direction work table, and a knife pressing mechanism fixed on the YZ-direction riveting mechanism, wherein the X-direction work table is used to carry and fix the heat sink and can move the heat sink in the X direction, and the YZ-direction riveting mechanism drives the knife pressing mechanism to apply pressure to the heat sink in the Z direction to complete the tooth pressing operation and can move the knife pressing mechanism in the Y direction; The knife pressing mechanism comprises a sheet-shaped knife pressing mechanism fixedly connected to the riveting mechanism via a fixed block and a pressure sensor. The pressure sensor detects the pressure on the riveting end of the knife pressing mechanism to determine whether to continue pressing or stop pressing.

2. The tooth pressing method of the insert type heat sink according to claim 1, characterized in that: The pressing knife is driven by an oil hydraulic press.

3. The tooth pressing method of the insert type heat sink according to claim 1, characterized in that: The single heat sink is assembled by one or more tooth pressing operations.

4. The tooth pressing method of the insert type heat sink according to claim 1, characterized in that: The X-axis workpiece table comprises an operating table, a slideway fixed on the operating table, a moving table arranged on the slideway and an X-axis motion cylinder connected to the moving table, and the radiator is fixed on the surface of the moving table.

5. The tooth pressing method of the insert type heat sink according to claim 1, characterized in that: The YZ riveting mechanism comprises a Z-axis hydraulic press, a guide rail connected to the hydraulic press, a slider arranged in the guide rail and a Y-axis motion cylinder connected to the slider, and the knife pressing mechanism is fixed on the slider.

6. The tooth pressing method of the insert type heat sink according to claim 1, characterized in that: The fixing block is divided into a left fixing block and a right fixing block.

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