An assembly mechanism for combining a heat sink and a PCB board

Abstract

An assembly mechanism for combining a heat sink and a PCB board includes an outer frame and a work area; the work area is provided with a pressing head mechanism 102, a moving mechanism 103, a positioning mechanism 104, and a pressing mechanism 101; the positioning mechanism 104 is fixed to the working panel with screws, the moving mechanism 103 is fixed to the bottom surface of the lower frame with screws, and the pressing mechanism 101 and the moving mechanism 103 are fixed with screws; the pressing head mechanism 102 is fixed to the panel of the moving mechanism 103 with screws. The assembly mechanism for combining a heat sink and a PCB board has a pressing head with a contoured design inside, which has a good positioning effect on the heat sink spring. The device is used in automated assembly equipment, and can adjust the pressing force to cope with the variability of electronic components. The pressing effect is stable and does not deviate, which can greatly reduce the risk of damaging the product.

Description

Technical Field

[0001] The invention relates to the technical field of computer parts assembly, in particular to an assembly mechanism for combining a heat sink and a PCB board. Background Art

[0002] With the development of society and the improvement of people's living standards, computers are increasingly entering the homes of the general public and have become an indispensable and common device for social groups and individuals to entertain, obtain information, and work. As the price of computers decreases, desktop computers are used less and less, and are replaced by cheap, portable, and easy-to-use laptops. It is foreseeable that the use of laptops will become more and more widespread in the future, and there will be more and more users.

[0003] However, the notebook computer itself is relatively small in size and has a high degree of component integration. The heat generated when using the computer cannot be effectively and timely dissipated. Especially in the hot summer, after using the notebook computer for a period of time, the machine temperature is often too high and the heat dissipation is not smooth, which affects its normal operation and brings inconvenience to the user. Therefore, the heat dissipation of the notebook computer has become a crucial issue. An existing heat dissipation method is to cover the PCB board on a heat sink, and the heat sink is coated with heat dissipation paste. Two springs are fixed on the top of the PCB board with screws. The screws connect the heat sink, the PCB board and the springs together, but they are not completely tightened. There is a certain gap between the screw and the PCB board. The springs will generate a tension in the opposite direction of the screws to restore the bent state. Therefore, this method can not only fix the heat sink, but also guide the heat out through the heat sink at the bottom. However, since the springs are small and the tension is large, four screws must be locked while flattening the springs. The assembly of the heat sink is completed manually, which not only has low assembly efficiency, but also has the risk of damaging the product. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides an assembly mechanism for combining a heat sink and a PCB board.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an assembly mechanism for combining a heat sink and a PCB board, including an external frame and a working area; the working area is provided with a pressure head mechanism 102, a moving mechanism 103, a positioning mechanism 104, and a pressing mechanism 101; and the positioning mechanism 104 is fixed to the working panel with screws, the moving mechanism 103 is fixed to the top surface of the external frame with screws, and the pressing mechanism 101 and the moving mechanism 103 are fixed with screws; the pressure head mechanism 102 is fixed to the panel of the moving mechanism 103 with screws.

[0006] The present invention also has the following additional technical features:

[0007] As a further specific optimization of the technical solution of the present invention: the pressure head mechanism 102 includes a square pressure head 209 fixed on an aluminum plate; a pressure rod A204 and a pressure rod B207 are inserted from top to bottom in the middle area of ​​the pressure head 209, and four pressure blocks are provided at the lower ends of the pressure rods A204 and B207, and the pressure blocks are embedded in the pressure rods A204 and B207, and two connecting pins 206 are provided in the middle area of ​​the pressure rods A204 and B207. 06 passes through the hole between the pressure rod A204 and the pressure rod B207 and penetrates to the two ends of the pressure head 209. There are two long holes on both sides of the pressure head 209; four fixing nuts 201 are provided at the upper ends of the pressure rods A204 and the pressure rods B207, and the fixing nuts 201 and the pressure rods A204 and B207 are connected with screws; springs A202 and springs B203 are provided between the fixing nuts 201 and the pressure rods A204 and B207 respectively.

[0008] As a further specific optimization of the technical solution of the present invention: the moving mechanism 103 includes a cylinder 215, which is fixed to the bottom panel of the frame with screws; the upper end of the push rod of the cylinder 215 is provided with an external thread, and two connecting blocks 218 are provided on the top, and the connecting blocks 218 and the push rod of the cylinder 215 are connected together; two supporting blocks 217 are provided below the two connecting blocks 218, and the connecting blocks 218 and the supporting blocks 217 are connected with screws; two oil-free bushing fixing seats are provided on both sides of the supporting block 217, and a stepped rotating shaft passes through between the oil-free bushing fixing seat 240 and the supporting block 217, and the other end of the rotating shaft is sleeved Upper retaining ring; a fixing plate A214 is provided above the oil-free bushing fixing seat 240, and the oil-free bushing fixing seat 240 and the fixing plate A214 are connected with screws; two stepped reinforcing plates A216 are provided on both sides of the fixing plate A214, and the reinforcing plates A216 are vertically placed on the upper surface of the fixing plate A214 and fixed with screws; four optical axes A220 are fixed at the four corners of the fixing plate A214, and the optical axes A220 rotate through the four holes of the working panel, and a fixing plate B226 is fixed at the upper end of the optical axis A220; there is a square hole in the middle position of the fixing plate B226 for fixing the pressure head mechanism.

[0009] As a further specific optimization of the technical solution of the present invention: the positioning mechanism 104 includes a positioning base plate 232 made of FR4 material, and three positioning blocks 231 are arranged above and below the positioning base plate 232. The positioning blocks 231 are used to position the positioning base plate, and the positioning blocks 231 are fixed to the working panel with screws; the surface of the positioning base plate 232 is provided with positioning pins A228, positioning pins B230, positioning pins C237, support blocks A229, support blocks B233 , support block C236, support block D239 and support column A234, support column B235; positioning pin A228, positioning pin B230, positioning pin C237 are embedded from top to bottom, support block A229, support block B233, support block C236, support block D239 and support column A234, support column B235 are all embedded from the bottom of the positioning base plate; there is a profiling block 238 in the middle of the positioning base plate, and the profiling block 238 is embedded in the positioning base plate from the top. Profiling block 238 and positioning pin A228 are used to position the heat sink, positioning pin B230 and positioning pin C237 are used to position the PCB board, and support column A234 and support column B235 are used to support the PCB board.

[0010] As a further specific optimization of the technical solution of the present invention: the pressing mechanism includes a motor 210, a connecting flange 211 is provided above the motor 210, and the connecting flange 211 and the motor 210 are fixed with screws; two support plates 212 are fixed above the connecting flange 211, and the support plates 212 and the upper fixing plate C219 are fixed with screws; a ball screw 225 is provided above the motor 210, and the ball screw 225 and the motor 210 are connected by a coupling 213; the ball screw A lead screw nut 222 is provided on 225, and the lead screw nut 222 and the fixed plate C219 are connected by screws; two stepped reinforcing plates B223 are provided on both sides of the fixed plate C219, and the reinforcing plates B223 are vertically placed on the upper surface of the fixed plate C219 and fixed with screws; four optical axes B221 are provided at the four corners of the fixed plate C219, and the bottom of the optical axis B221 is fixed to the fixed plate C219, and the optical axis B221 passes through the working panel, and a fixed plate D227 is fixed on the top.

[0011] Compared with the prior art, the present invention has the following advantages: the assembly mechanism for combining the heat sink and the PCB board has a contoured design inside the pressure head, which has a good positioning effect on the heat sink spring. The device is used in automated assembly equipment, and the pressing force can be adjusted to cope with the variability of electronic components. The pressing effect is stable and does not deviate, which can greatly reduce the risk of damaging the product.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the pressing head mechanism of the present invention;

[0015] Figure 2 It is a schematic diagram of the pressing head mechanism of the present invention;

[0016] Figure 3 It is a schematic diagram of the moving and pressing mechanism of the present invention;

[0017] Figure 4 It is a schematic diagram of the moving and pressing mechanism of the present invention;

[0018] Figure 5 It is a schematic diagram of the positioning mechanism of the present invention;

[0019] Figure 6 It is a schematic diagram of the initial position of the present invention;

[0020] Figure 7 This is a schematic diagram of the pressing head mechanism of the present invention in place;

[0021] Figure 8 This is a schematic diagram of the pressing plate mechanism of the present invention in place;

[0022] Fig. 9 This is a schematic diagram of the pressure rod of the pressure head mechanism of the present invention when it is not under pressure;

[0023] Fig.10 It is a schematic diagram of the compression rod of the compression mechanism of the present invention being compressed;

[0024] Fig.11 It is a schematic diagram of the overall assembly of the present invention.

[0025] Description of reference numerals: 101, pressing mechanism; 102, pressing head mechanism; 103, moving mechanism; 104, positioning mechanism; 109, welding support plate; 201, fixing nut; 202, spring A; 203, spring B; 204, pressing rod A; 205, magnet; 206, connecting pin; 207, pressing rod B; 208, pressing block; 209, pressing head; 210, motor; 211, connecting flange; 212, supporting plate; 213, coupling; 214, fixing plate A; 215, cylinder; 216, reinforcing plate A; 217, supporting block; 218, connecting block; 219. Fixing plate C; 220. Optical axis A; 221. Optical axis B; 222. Screw nut; 223. Reinforcement plate B; 224. Floating street; 225. Ball screw; 226. Fixing plate B; 227. Fixing plate D; 228. Locating pin A; 229. Support block A; 230. Locating pin B; 231. Locating block; 232. Locating base plate; 233. Support block B; 234. Support column A; 235. Support column B; 236. Support block C; 237. Locating pin C; 238. Profiling block; 239. Support block D; 240. Oil-free bushing fixing seat. DETAILED DESCRIPTION

[0026] The exemplary embodiments disclosed in the present invention will be described in more detail below with reference to the accompanying drawings. These embodiments are intended to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. Although the exemplary embodiments disclosed in the present invention are shown in the accompanying drawings, it should be understood that the present invention should not be limited by the embodiments described herein.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] An assembly mechanism for combining a heat sink and a PCB board, the mechanism is composed of an outer frame and a working area. The working area is provided with a pressing head mechanism 102, a moving mechanism 103, a positioning mechanism 104, and a pressing mechanism 101. The positioning mechanism 104 is fixed to the working panel with screws, the moving mechanism 103 is fixed to the top surface of the outer frame with screws, and the pressing mechanism 101 and the moving mechanism 103 are fixed with screws. The pressing head mechanism 102 is fixed to the panel of the moving mechanism 103 with screws.

[0030] from Figure 7 It can be seen that the device is composed of four parts: a pressing head mechanism 102, a moving mechanism 103, a positioning mechanism 104, and a pressing mechanism 101.

[0031] from Figure 1-Figure 2 It can be seen from the pressure head mechanism that the pressure head mechanism 102 includes a square pressure head 209 fixed on an aluminum plate. In the middle area of ​​the pressure head, there are pressure rods A204 and B207 running through from top to bottom, and four pressure blocks are provided at the lower ends of the pressure rods A204 and B207, and the pressure blocks are embedded in the pressure rods A204 and B207. Two connecting pins 206 are provided in the middle area of ​​the pressure rods A204 and B207, and the connecting pins 206 pass through the holes in the middle of the pressure rods A204 and B207 and run through the two ends of the pressure head 209. There are two long holes running through on both sides of the pressure head 209, and the connecting pins 206 can move up and down within the range of the long holes. Four fixing nuts 201 are provided at the upper ends of the pressure rods A204 and B207, and the fixing nuts 201 and the pressure rods A204 and B207 are connected by screws. A spring A202 and a spring B203 are respectively arranged between the fixing nut 201 and the pressing rod A204 and the pressing rod B207. The spring A202 and the spring B203 provide a buffer force when the pressing rod is pressed down.

[0032] from Figure 3-Figure 4It can be seen from the moving mechanism that the moving mechanism 103 includes a cylinder 215, which is fixed to the bottom panel of the frame with screws. There is an external thread on the upper end of the push rod of the cylinder 215, and two connecting blocks 218 are provided on the top, and the connecting blocks 218 and the push rod of the cylinder 215 are connected together. Two support blocks 217 are provided below the two connecting blocks 218, and the connecting blocks 218 and the support blocks 217 are connected with screws. Two oil-free bushing fixing seats are provided on both sides of the support block 217, and a stepped rotating shaft passes between the oil-free bushing fixing seat 240 and the support block 217, and a retaining ring is put on the other end of the rotating shaft so that the rotating shaft will not fall out. A fixing plate A214 is provided above the oil-free bushing fixing seat 240, and the oil-free bushing fixing seat 240 and the fixing plate A214 are connected with screws. Two stepped reinforcing plates A216 are provided on both sides of the fixing plate A214. The reinforcing plates A216 are vertically placed on the upper surface of the fixing plate A214 and fixed with screws. Four optical axes A220 are fixed at the four corners of the fixing plate A214. The optical axes A220 rotate through the four holes of the working panel. A fixing plate B226 is fixed at the upper end of the optical axes A220. There is a square hole in the middle of the fixing plate B226 for fixing the pressure head mechanism.

[0033] from Figure 5 It can be seen from the positioning mechanism that the positioning mechanism 104 includes a positioning base plate 232 made of FR4 material, and three positioning blocks 231 are provided above and below the positioning base plate 232. The positioning blocks 231 are used to position the positioning base plate, and the positioning blocks 231 are fixed to the working panel with screws. The surface of the positioning base plate 232 is provided with positioning pins A228, positioning pins B230, positioning pins C237, support blocks A229, support blocks B233, support blocks C236, support blocks D239 and support columns A234 and support columns B235; positioning pins A228, positioning pins B230, positioning pins C237 are embedded from top to bottom, and support blocks A229, support blocks B233, support blocks C236, support blocks D239 and support columns A234 and support columns B235 are all embedded from the bottom of the positioning base plate; there is a profiling block 238 in the middle of the positioning base plate, and the profiling block 238 is embedded in the positioning base plate from the top. The profiling block 238 and positioning pins A228 are used to position the heat sink, the positioning pins B230 and positioning pins C237 are used to position the PCB board, and the support columns A234 and support columns B235 are used to support the PCB board.

[0034] from Figure 3-Figure 4It can be seen from the pressing mechanism that the pressing mechanism includes a motor 210, a connecting flange 211 is provided above the motor 210, and the connecting flange 211 is fixed to the motor 210 with screws. Two support plates 212 are fixed above the connecting flange 211, and the support plates 212 and the upper fixed plate C219 are fixed with screws. A ball screw 225 is provided above the motor 210, and the ball screw 225 and the motor 210 are connected by a coupling 213. A screw nut 222 is provided on the ball screw 225, and the screw nut 222 and the fixed plate C219 are connected with screws. Two stepped reinforcing plates B223 are provided on both sides of the fixed plate C219, and the reinforcing plates B223 are vertically placed on the upper surface of the fixed plate C219 and fixed with screws. Four optical axes B221 are provided at the four corners of the fixed plate C219. The bottom of the optical axis B221 is fixed to the fixed plate C219. The optical axis B221 passes through the working panel, and a fixed plate D227 is fixed on the top.

[0035] The operation method of the assembly mechanism for combining the heat sink and the PCB board:

[0036] Step 1: Position the product: OP manually places the heat sink on the positioning base plate made of FR4 material, and positions the product through the middle profiling block and the positioning pin A on the left. Then place the PCB board on top of the heat sink, with support columns at the bottom to support it, and four support blocks around to position it, to ensure the uniformity of each product placement. Manually place the heat sink spring into the profiling head, and the magnet in the head will adsorb it to the profiling surface of the head. At this point, the product positioning step is completed.

[0037] Step 2: The pressure head is in place: Press the double start button, the cylinder contracts, and the entire moving mechanism, the pressing mechanism and the pressure head mechanism move downward. When the pressure head mechanism reaches the set distance from the PCB surface, the moving mechanism stops moving, and the pressure head is in place. At this time, the pressure head and the PCB board are not in contact, and OP locks the right screw.

[0038] Step 3: The pressing mechanism starts to move: the motor starts to move, driving the ball screw to rotate through the coupling, and the screw nut starts to move downward, driving the pressure plate to press down the four pressure rods on the pressure head mechanism. The four pressure rods press down the two ends of the heat sink spring. The spring contacts the PCB board and begins to deform until it changes from a bent state to a straight state. The pressing mechanism stops and OP locks the left screw.

[0039] Step 4. Take out the product: Press the double start button, the cylinder pushes upward, and pushes the moving mechanism, the pressing mechanism and the pressure head mechanism to the top. In this way, there is a large distance between the pressure head mechanism and the PCB board, and OP can take out the product.

[0040] Although the above embodiments have been described, once those skilled in the art know the basic creative concepts, they can make additional changes and modifications to these embodiments. Therefore, the above description is only an embodiment of the present invention and does not limit the patent protection scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An assembly mechanism for combining a heat sink and a PCB, characterized in that: The invention comprises an outer frame and a working area; the working area is provided with a pressing head mechanism (102), a moving mechanism (103), a positioning mechanism (104), and a pressing mechanism (101); the positioning mechanism (104) is fixed to the working panel by screws, the moving mechanism (103) is fixed to the top surface of the outer frame by screws, the pressing mechanism (101) and the moving mechanism (103) are fixed by screws; the pressing head mechanism (102) is fixed to the panel of the moving mechanism (103) by screws; The pressure head mechanism (102) comprises a square pressure head (209) fixed on an aluminum plate; a pressure rod A (204) and a pressure rod B (207) are inserted from top to bottom in the middle area of ​​the pressure head (209); four pressure blocks are provided at the lower ends of the pressure rod A (204) and the pressure rod B (207); the pressure blocks are embedded in the pressure rod A (204) and the pressure rod B (207); two connecting pins (206) are provided in the middle area of ​​the pressure rod A (204) and the pressure rod B (207); the connecting pins (206) extend from the pressure rod A (204) to the pressure rod B (207); and the pressure rod B (207) pass through the hole in the middle and penetrate to the two ends of the pressure head (209), and two long holes are penetrated on both sides of the pressure head (209); four fixing nuts (201) are provided at the upper ends of the pressure rod A (204) and the pressure rod B (207), and the fixing nuts (201) and the pressure rod A (204) and the pressure rod B (207) are connected by screws; springs A (202) and springs B (203) are provided between the fixing nuts (201) and the pressure rod A (204) and the pressure rod B (207), respectively; The moving mechanism (103) comprises a cylinder (215), which is fixed to the bottom panel of the frame by screws; an external thread is provided on the upper end of the push rod of the cylinder (215), and two connecting blocks (218) are provided on the top, and the connecting blocks (218) and the push rod of the cylinder (215) are connected together; two supporting blocks (217) are provided below the two connecting blocks (218), and the connecting blocks (218) and the supporting blocks (217) are connected by screws; two oil-free bushing fixing seats are provided on both sides of the supporting blocks (217), and a stepped rotating shaft passes between the oil-free bushing fixing seat (240) and the supporting block (217), and a clamping ring is sleeved on the other end of the rotating shaft; the oil-free bushing fixing seat (240) and the supporting block (217) are provided with a plurality of support blocks (217). A fixing plate A (214) is provided above the fixing seat (240), and the oil-free bushing fixing seat (240) and the fixing plate A (214) are connected by screws; two stepped reinforcing plates A (216) are provided on both sides of the fixing plate A (214), and the reinforcing plates A (216) are vertically placed on the upper surface of the fixing plate A (214) and fixed by screws; four optical axes A (220) are fixed at the four corners of the fixing plate A (214), and the optical axes A (220) rotate through four holes of the working panel, and a fixing plate B (226) is fixed at the upper end of the optical axes A (220); a square hole is provided in the middle of the fixing plate B (226) for fixing the pressure head mechanism; The positioning mechanism (104) includes a positioning base plate (232) made of FR4 material, and three positioning blocks (231) are arranged above and below the positioning base plate (232). The positioning blocks (231) are used to position the positioning base plate, and the positioning blocks (231) are fixed to the working panel with screws; a positioning pin A (228), a positioning pin B (230), a positioning pin C (237), a support block A (229), a support block B (233), a support block C (236), a support block D (239) and a support column A (234), a support column B (235) are arranged on the surface of the positioning base plate (232); the positioning pin A (228), the positioning pin B (230), the positioning pin C (237), a support block A (229), a support block B (233), a support block C (236), a support block D (239) and a support column A (234), a support column B (235) are arranged The pin B (230) and the positioning pin C (237) are embedded from the top to the bottom, and the support block A (229), the support block B (233), the support block C (236), the support block D (239) and the support column A (234) and the support column B (235) are all embedded from the bottom of the positioning base plate; a profiling block (238) is provided in the middle of the positioning base plate, and the profiling block (238) is embedded in the positioning base plate from the top; the profiling block (238) and the positioning pin A (228) are used to locate the heat sink, the positioning pin B (230) and the positioning pin C (237) are used to locate the PCB board, and the support column A (234) and the support column B (235) are used to support the PCB board; The pressing mechanism comprises a motor (210), a connecting flange (211) is provided above the motor (210), and the connecting flange (211) and the motor (210) are fixed by screws; two supporting plates (212) are fixed above the connecting flange (211), and the supporting plates (212) and the upper fixing plate C (219) are fixed by screws; a ball screw (225) is provided above the motor (210), and the ball screw (225) and the motor (210) are connected by a coupling (213); a ball screw (225) is provided on the ball screw (225). The lead screw nut (222) and the fixing plate C (219) are connected by screws; two stepped reinforcing plates B (223) are provided on both sides of the fixing plate C (219), and the reinforcing plates B (223) are vertically placed on the upper surface of the fixing plate C (219) and fixed by screws; four optical axes B (221) are provided at the four corners of the fixing plate C (219), the bottom of the optical axis B (221) is fixed to the fixing plate C (219), the optical axis B (221) passes through the working panel, and a fixing plate D (227) is fixed on the top.

2. An operating method of the assembly mechanism for combining a heat sink and a PCB board as claimed in claim 1, characterized in that: The following steps are included: Step 1: Position the product: OP manually places the heat sink on the positioning base plate made of FR4 material, and positions the product through the middle profiling block and the positioning pin A on the left; then place the PCB board on top of the heat sink, with support columns at the bottom to support it, and four support blocks around to position it, to ensure the uniformity of each product placement; manually put the heat sink spring into the profiling pressure head, and the magnet in the pressure head will adsorb it on the profiling surface of the pressure head; at this point, the product positioning step is completed; Step 2: The pressure head is in place: Press the double start button, the cylinder contracts, and the entire moving mechanism, the pressing mechanism and the pressure head mechanism move downward; until the pressure head mechanism reaches the set distance from the surface of the PCB board, the moving mechanism stops moving, and the pressure head is in place; at this time, the pressure head and the PCB board are not in contact, and OP locks the right screw; Step 3: The pressing mechanism starts to move: the motor starts to move, driving the ball screw to rotate through the coupling, and the screw nut starts to move downward, driving the pressing plate to press the four pressing rods on the pressing head mechanism. The four pressing rods press down the two ends of the heat sink spring. The spring contacts the PCB board and starts to deform until it changes from a bent state to a straight state. The pressing mechanism stops, and OP locks the left screw. Step 4. Take out the product: Press the double start button, the cylinder pushes upward, and pushes the moving mechanism, the pressing mechanism and the pressure head mechanism to the top. In this way, there is a large distance between the pressure head mechanism and the PCB board, and OP can take out the product.

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