CN112687541B - FRD device and manufacturing process thereof - Google Patents
FRD device and manufacturing process thereof Download PDFInfo
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- CN112687541B CN112687541B CN202011582932.3A CN202011582932A CN112687541B CN 112687541 B CN112687541 B CN 112687541B CN 202011582932 A CN202011582932 A CN 202011582932A CN 112687541 B CN112687541 B CN 112687541B
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Abstract
The invention provides an FRD device and a manufacturing process thereof, comprising the following steps: the LED chip comprises a diode chip and a shell, wherein a bottom plate is fixed inside the shell, pins extend from the diode chip, the pins extend out of the shell, the pins are fixed on the bottom plate, the shell is provided with a light-transmitting plate, and the light-transmitting plate is positioned above the diode chip; the shell is provided with a heat dissipation device communicated with the inside of the shell and the outside. The invention aims to provide an FRD device with high heat dissipation efficiency and stable performance.
Description
Technical Field
The invention relates to the technical field of FRD devices with high heat dissipation performance, in particular to an FRD device and a manufacturing process thereof.
Background
The fast recovery diode (FRD for short) is a semiconductor diode with good switching characteristic and short reverse recovery time, and is mainly applied to electronic circuits such as a switching power supply, a PWM (pulse width modulation) and a frequency converter, and used as a high-frequency rectifier diode, a freewheeling diode or a damping diode. The internal structure of the fast recovery diode is different from that of a common PN junction diode, and the fast recovery diode belongs to a PIN junction diode, namely, a base region I is added between a P-type silicon material and an N-type silicon material to form a PIN silicon chip. Because the base region is very thin and the reverse recovery charge is very small, the reverse recovery time of the fast recovery diode is short, the forward voltage drop is low, and the reverse breakdown voltage (withstand voltage) is high.
In order to ensure the stability and the service life of the diode during working, the diode needs to be radiated, the heat radiation efficiency of the existing diode is poor, and the stability of the diode is influenced under the long-term high-temperature state.
Disclosure of Invention
The invention provides a manufacturing process of an FRD device, which aims to solve the problems.
The invention provides a FRD device manufacturing process, which comprises the following steps:
firstly, processing and forming a shell, wherein a light transmission plate mounting port and a pin mounting port are reserved in the shell;
fixing the shell on a workbench, and drilling a connecting hole penetrating through the shell;
fixing an inner die on the inner wall of the shell, and fixing an outer die on the outer wall of the shell, so that the connecting hole is positioned between the inner die and the outer die;
step four, injecting the heated molten metal into the inner die, the outer die and the connecting hole;
step five, rapidly cooling and solidifying the molten metal through a cooling device, wherein the solidified metal forms a heat absorption layer attached to the inner wall of the shell, a heat dissipation layer attached to the outer wall of the shell and a connector in the connecting hole;
separating the inner mold from the solidified metal, and separating the outer mold from the solidified metal;
placing a bottom plate on the workbench, and fixing the diode chip in the middle of the plate surface on one side of the bottom plate;
putting the bottom plate and the diode chip into the shell from the light-transmitting plate mounting opening, and clamping and fixing the bottom plate and the shell;
step nine, the pins penetrate through the pin mounting openings, the pins are abutted to the bottom plate, and the pins and the diode chip are welded through a lead;
fixing the pins and the bottom plate by using epoxy resin;
step eleven, the light-transmitting plate and the shell are clamped and fixed, and the light-transmitting plate covers the light-transmitting plate mounting opening.
Preferably, the cooling device comprises a cooling box, the cooling box is used for accommodating the shell and melting metal, the cooling box is provided with a shell penetrating through the outer wall of the cooling box, a spherical accommodating cavity is arranged in the shell, two conical bosses are arranged in the accommodating cavity, the axes of the two bosses are superposed, the cone angles of the two bosses are oppositely arranged, the shell is rotatably connected with a spherical rotating block, a rotating block rotating shaft is superposed with the axes of the bosses, the rotating block is rotatably connected with a rotating plate, the rotating plate is a circular plate, the edge of the rotating plate is in butt fit with the inner wall of the accommodating cavity, the rotating plate rotating shaft is intersected with the axis of the rotating block, the rotating block is simultaneously abutted against the two boss conical surfaces in the movement process, a baffle is fixed on the inner wall of the accommodating cavity and is respectively in butt fit with the two boss outer walls, the inner wall of the accommodating cavity and the outer wall of the rotating block, the baffle will hold the chamber and cut off, the rotor plate be equipped with baffle two sides butt complex recess, the boss is equipped with the connection hold chamber and external first connecting hole and second connecting hole, first connecting hole with the second connecting hole is close to respectively the baffle is located the baffle both sides, first connecting hole with hold the chamber intercommunication, the second connecting hole intercommunication is external, the drive is installed to the casing the first drive assembly of rotor block pivoted.
Preferably, the first driving assembly comprises a rotating block coaxially connected with the rotating block through a key, the rotating block is a rotating body with a rotating shaft of the rotating block as an axis, the cooling box is rotatably connected with a first bevel gear and a motor for driving the first bevel gear to rotate, the first bevel gear is coaxially and rotatably connected with a moving block, the moving block is fixedly connected with a swing rod, the swing rod is rotatably connected with a rotating wheel, the rotating wheel is rotatably connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the outer wall of the rotating wheel is in butt fit with the side wall of the rotating block, and the cooling box is provided with a second driving assembly for driving the swing rod to rotate; a first elastic piece is connected between the rotating block and the cooling box, and the first elastic piece applies force far away from the rotating block to the rotating block.
Preferably, the second driving assembly comprises a cylinder body mounted on the cooling box, the cylinder body is connected with a piston in a sliding manner, the piston divides the cylinder body into a first closed cavity and a second closed cavity, the piston is fixedly connected with an output rod, the first cavity is located in the accommodating cavity, the second cavity is located outside the cooling box, one end, far away from the cylinder body, of the output rod is connected with a pull rope, the other end of the pull rope is connected with one end, far away from the rotating wheel, of the swing rod, the swing rod and the second elastic member are connected with the second elastic member, and the second elastic member exerts force on the swing rod in a direction far away from the pull rope; and a locking assembly for locking the swing rod is connected between the swing rod and the cooling box.
Preferably, the locking assembly comprises a brake block coaxially and fixedly connected to the first bevel gear, the brake block is provided with a first clamping groove and a second clamping groove, the cooling box is hinged to a first connecting rod and a second connecting rod, a first clamping block in clamping fit with the first clamping groove is fixed at the end of the first connecting rod, a second clamping block in clamping fit with the second clamping groove is fixed at the end of the second connecting rod, a third elastic part is connected between the first connecting rod and the second connecting rod, the first clamping block and the second clamping block move away from each other under the action of the third elastic part, the second chamber is connected with a pipeline, the pipeline is rotatably connected to a first turbofan and a second turbofan of the cooling box, the first turbofan and the second turbofan are opposite in rotation direction, the first turbofan rotating shaft and the second turbofan rotating shaft are coincident with the pipeline axis direction, the first turbofan is coaxially connected with the cylindrical gear, the cooling box is characterized in that a first ratchet wheel assembly is connected between the first turbofan and the cylindrical gear, the second turbofan is coaxially connected to the cylindrical gear, a second ratchet wheel assembly is connected between the second turbofan and the cylindrical gear, the ratchet direction of the first ratchet wheel assembly is the same as that of the second ratchet wheel assembly, the cooling box is slidably connected with a first rack and a second rack which are meshed with the cylindrical gear, the first rack is hinged to the first connecting rod, and the second rack is hinged to the second connecting rod.
Preferably, the cooling box is provided with a conduit for restricting the path of the pulling rope.
Preferably, the first elastic member, the second elastic member and the third elastic member are springs.
Preferably, the surfaces of the rotating wheel and the rotating block are covered with anti-slip layers.
An FRD device with high heat dissipation performance comprises a diode chip and a shell, wherein a bottom plate is fixed inside the shell, pins extend from the diode chip, the pins extend out of the shell, the pins are fixed on the bottom plate, the shell is provided with a light-transmitting plate, and the light-transmitting plate is positioned above the diode chip; the shell is provided with a cooling device for communicating the inside of the shell with the outside; the heat-absorbing layer is attached to the inner wall of the shell, the heat-radiating layer is attached to the outer wall of the shell, the shell is provided with a connecting hole, a connecting body which is connected with the heat-absorbing layer and the heat-radiating layer simultaneously is arranged in the connecting hole, and the heat-absorbing layer and the heat-radiating layer are made of metal materials.
The invention has the following beneficial effects: placing a bottom plate, welding a diode chip on the bottom plate, welding two pins on two sides of the bottom plate, and completing the installation of an internal structure of the FRD;
heating and melting metal on the inner wall and the outer wall of the shell to enable the metal to form a heat absorption layer and a heat dissipation layer which are attached to the inner wall and the outer wall of the shell; rapidly cooling the molten metal by using a cooling device to rapidly solidify the heat absorption layer and the heat dissipation layer; fixedly connecting the light-transmitting plate with the shell; completing the external structure installation of the FRD;
the shell and the bottom plate are fixedly arranged; assembling an external structure of the FRD and an internal structure of the FRD together to complete the installation of the FRD device;
the beneficial effects of the above technical scheme are: the heat in the FRD is absorbed by the heat absorption layer, the heat is transferred to the heat dissipation layer by the heat absorption layer, and the heat of the heat dissipation layer is volatilized outside, so that the FRD is prevented from being damaged due to overheating, and the FRD keeps good performance; FRD device radiating efficiency is high, and the stable performance.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is an overall view of an FRD device in an embodiment of the invention;
FIG. 2 is a schematic view of a cooling device according to an embodiment of the present invention;
FIG. 3 is a sectional view of section A-A in the embodiment of the present invention;
FIG. 4 is a structural view of a first drive assembly in an embodiment of the present invention;
FIG. 5 is a structural view of a second drive assembly in an embodiment of the present invention;
fig. 6 is a structural view of a locking assembly in an embodiment of the invention.
Wherein, 1, diode chip; 2. a housing; 3. a base plate; 4. a pin; 5. a light-transmitting plate; 6. a housing; 7. an accommodating chamber; 8. a boss; 9. rotating the block; 10. a rotating plate; 11. a baffle plate; 12. a first connection hole; 13. a second connection hole; 14. rotating the block; 15. a first bevel gear; 16. a motor; 17. a motion block; 18. a swing rod; 19. a rotating wheel; 20. a first elastic member; 21. a cylinder body; 22. a piston; 23. a first chamber; 24. a second chamber; 25. an output rod; 26. pulling a rope; 27. a second elastic member; 28. a first card slot; 29. a second card slot; 30. a first clamping block; 31. a second fixture block; 32. a first link; 33. a second link; 34. a third elastic member; 35. a pipeline; 36. a first turbofan; 37. a second turbofan; 38. a cylindrical gear; 39. a second rack; 40. a first rack; 41. a second bevel gear; 42. a conduit; 43. a cooling box; 44. a heat absorbing layer; 45. a heat dissipation layer; 46. connecting holes; 47. a brake pad.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-6, an FRD device fabrication process, the method is as follows:
firstly, a shell 2 is processed and formed, and a light transmission plate mounting port and a pin mounting port are reserved in the shell 2;
fixing the shell 2 on a workbench, and drilling a connecting hole 46 penetrating through the shell 2;
fixing an inner die on the inner wall of the shell 2, and fixing an outer die on the outer wall of the shell 2, so that the connecting hole 46 is positioned between the inner die and the outer die;
step four, injecting the heated molten metal into the inner mold, the outer mold and the connecting hole 46;
step five, the molten metal is rapidly cooled and solidified through a cooling device, and the solidified metal forms a heat absorption layer 44 attached to the inner wall of the shell 2, a heat dissipation layer 45 attached to the outer wall of the shell 2 and a connector in the connecting hole 46;
separating the inner mold from the solidified metal, and separating the outer mold from the solidified metal;
placing the bottom plate 3 on the workbench, and fixing the diode chip 1 in the middle of one side plate surface of the bottom plate 3;
step eight, placing the bottom plate 3 and the diode chip 1 into the shell 2 from the light-transmitting plate mounting opening, and clamping and fixing the bottom plate 3 and the shell 2;
step nine, the pin 4 penetrates through the pin mounting hole, the pin 4 is abutted against the bottom plate 3, and the pin 4 is welded with the diode chip 1 through a lead;
fixing the pins 4 and the bottom plate 3 by using epoxy resin;
step eleven, the light-transmitting plate 5 and the shell 2 are clamped and fixed, and the light-transmitting plate 5 covers the light-transmitting plate mounting opening.
The working principle of the technical scheme is as follows: placing a bottom plate 3, welding a diode chip 1 on the bottom plate 3, and welding two pins 4 on two sides of the bottom plate 3 to complete the internal structure installation of the FRD;
heating and melting metal on the inner wall and the outer wall of the shell 2 to form a heat absorption layer 44 and a heat dissipation layer 45 which are attached to the inner wall and the outer wall of the shell 2; rapidly cooling the molten metal by using a cooling device to rapidly solidify the heat absorption layer 44 and the heat dissipation layer 45; fixedly connecting the light-transmitting plate 5 with the shell 2; completing the external structure installation of the FRD;
the shell and the bottom plate are fixedly arranged; assembling an external structure of the FRD and an internal structure of the FRD together to complete the installation of the FRD device;
the beneficial effects of the above technical scheme are: the heat in the FRD is absorbed by the heat absorption layer, the heat is transferred to the heat dissipation layer by the heat absorption layer, and the heat of the heat dissipation layer is volatilized outside, so that the FRD is prevented from being damaged due to overheating, and the FRD keeps good performance; FRD device radiating efficiency is high, and the stable performance.
In one embodiment, the cooling device comprises a cooling box 43, the cooling box 43 is used for accommodating the shell 2 and melting metal, the cooling box 43 is provided with a shell 6 penetrating through the outer wall of the cooling box 43, a spherical accommodating cavity 7 is arranged in the shell 6, two conical bosses 8 are arranged in the accommodating cavity 7, the axes of the two bosses 8 are overlapped, the conical angles of the two bosses 8 are oppositely arranged, the shell 6 is rotatably connected with a spherical rotating block 9, the rotating shaft of the rotating block 9 is overlapped with the axes of the bosses 8, the rotating block 9 is rotatably connected with a rotating plate 10, the rotating plate 10 is a circular plate, the edge of the rotating plate 10 is in butt fit with the inner wall of the accommodating cavity 7, the rotating shaft of the rotating plate 10 is intersected with the axis of the rotating block 9, the rotating block 9 is simultaneously abutted against the two conical surfaces of the bosses 8 in the moving process, and a baffle 11 is fixed on the inner wall of the accommodating cavity 7, the baffle 11 is respectively abutted and matched with the outer walls of the two bosses 8, the inner wall of the accommodating cavity 7 and the outer wall of the rotating block 9, the accommodating cavity 7 is separated by the baffle 11, the rotating plate 10 is provided with a groove abutted and matched with the two sides of the baffle 11, the boss 8 is provided with a first connecting hole 12 and a second connecting hole 13 for connecting the accommodating cavity 7 with the outside, the first connecting hole 12 and the second connecting hole 13 are respectively arranged at the two sides of the baffle 11 close to the baffle 11, the first connecting hole 12 is communicated with the accommodating cavity 7, the second connecting hole 13 is communicated with the outside, and the shell 6 is provided with a first driving assembly for driving the rotating block 9 to rotate;
the working principle of the technical scheme is as follows: the shell 2 and the molten metal are placed in the cooling box 43, the first driving assembly drives the rotating block 9 to rotate, the rotating block 9 and the rotating plate 10 rotate relatively, the contact position of the rotating plate 10 and the outer wall of the boss 8 rotates along with the rotation of the rotating block 9, the rotating plate 10 sucks gas in the shell 2 from the first connecting hole 12 into the accommodating cavity 7, the rotating plate 10 extrudes the gas in the accommodating cavity 7 from the second connecting hole 13, and the baffle 11 prevents the first connecting hole 12 from being communicated with the second connecting hole 13, so that the gas exchange efficiency is improved;
the beneficial effects of the above technical scheme are: the hot gas in the cooling box 43 is continuously taken out of the outside, so that the cooling of the molten metal is realized, the cooling efficiency is high, the metal is quickly solidified, the time is saved, and the production efficiency of an FRD device is improved.
In one embodiment, the first driving assembly comprises a rotating block 14 coaxially keyed to the rotating block 9, the rotating block 14 is a rotating body with a rotating shaft of the rotating block 9 as an axis, the cooling box 43 is rotatably connected with a first bevel gear 15 and a motor 16 for driving the first bevel gear 15 to rotate, the first bevel gear 15 is coaxially and rotatably connected with a moving block 17, the moving block 17 is fixedly connected with a swing rod 18, the swing rod 18 is rotatably connected with a rotating wheel 19, the rotating wheel 19 is rotatably connected with a second bevel gear 41, the second bevel gear 41 is meshed with the first bevel gear 15, the outer wall of the rotating wheel 19 is in abutting fit with the side wall of the rotating block 14, and the cooling box 43 is provided with a second driving assembly for driving the swing rod 18 to rotate; a first elastic member 20 is connected between the rotating block 14 and the cooling box 43, and the first elastic member 20 applies a force to the rotating block 14 away from the rotating block 9;
the working principle of the technical scheme is as follows: the motor 16 drives the first bevel gear 15 to rotate, the first bevel gear 15 drives the second bevel gear 41 to rotate, the second bevel gear 41 drives the rotating wheel 19 to rotate, the rotating wheel 19 drives the rotating block 14 to rotate, and the rotating block 14 drives the rotating block 9 to rotate;
according to the heat temperature in the cooling box 43, the second driving mechanism rotates the swing rod 18, the swing rod 18 drives the rotating wheel 19 to rotate around the rotating shaft of the swing rod 18, the contact position of the rotating wheel 19 and the rotating block 14 is changed, and when the diameter of the contact position of the rotating wheel 19 and the rotating block 14 is large, the rotating block 9 is high in rotating speed and fast in heat dissipation; when the diameter of the contact position of the rotating wheel 19 and the rotating block 14 is small, the rotating block 9 slowly radiates heat at a low rotating speed;
the beneficial effects of the above technical scheme are: the heat exchange efficiency can be adjusted according to the temperature in the cooling box 43, so that the temperature of the FRD device is close to constant temperature, and the FRD device keeps good performance.
In one embodiment, the second driving assembly includes a cylinder 21 mounted on the cooling box 43, the cylinder 21 is slidably connected with a piston 22, the piston 22 divides the cylinder 21 into a first sealed chamber 23 and a second unsealed chamber 24, the piston 22 is fixedly connected with an output rod 25, the first chamber 23 is located in the accommodating chamber 7, the second chamber 24 is located outside the cooling box 43, one end of the output rod 25 away from the cylinder 21 is connected with a pull rope 26, the other end of the pull rope 26 is connected with one end of the swing rod 18 away from the rotating wheel 19, the swing rod 18 and the second elastic member 27 are connected, and the second elastic member 27 applies force to the swing rod 18 away from the pull rope 26; a locking component for locking the swing rod 18 is connected between the swing rod 18 and the cooling box 43;
the working principle of the technical scheme is as follows: the temperature in the shell 2 is transmitted to the cylinder body 21, the gas in the first chamber 23 expands according to the temperature in the shell 2, the gas in the first chamber 23 expands to control the position of the piston 22, the output rod 25 drives the output rod 25 to move, the output rod 25 pulls the pull rope 26, and the pull rope 26 pulls the swing rod 18 to rotate, so that the cooling efficiency of the FRD device is controlled; the second elastic element 27 exerts a force on the swing link 18 opposite to the force exerted by the pull rope 26 on the swing link 18, so that the swing link 18 is kept balanced and stable.
The beneficial effects of the above technical scheme are: according to the cooling efficiency that the metal was melted in the accurate control of the temperature in the shell 2, the temperature of cooling box 43 is close at the uniform velocity cooling, prevents that the metal cooling speed is too fast and the fracture.
In one embodiment, the locking assembly includes a brake block 47 coaxially and fixedly connected to the first bevel gear 15, the brake block 47 is provided with a first engaging groove 28 and a second engaging groove 29, the cooling box 43 is hinged with a first link 32 and a second link 33, the first link 32 is fixed at an end portion thereof with a first engaging block 30 engaged with the first engaging groove 28, the second link 33 is fixed at an end portion thereof with a second engaging block 31 engaged with the second engaging groove 29, a third elastic member 34 is connected between the first link 32 and the second link 33, the first engaging block 30 and the second engaging block 31 move away from each other under the action of the third elastic member 34, the second chamber 24 is connected with a pipeline 35, the pipeline 35 is rotatably connected to a first turbofan 36 and a second turbofan 37 of the cooling box 43, the first turbofan 36 and the second turbofan 37 are opposite in rotation direction, the rotating shafts of the first turbofan 36 and the second turbofan 37 are overlapped with the axial direction of the pipeline 35, the first turbofan 36 and the turbofan are coaxially connected with a cylindrical gear 38, a first ratchet assembly is connected between the first turbofan 36 and the cylindrical gear 38, the second turbofan 37 and the second turbofan are coaxially connected with the cylindrical gear 38, a second ratchet assembly is connected between the second turbofan 37 and the cylindrical gear 38, the ratchet direction of the first ratchet assembly is the same as that of the second ratchet assembly, the cooling box 43 is slidably connected with a first rack 40 and a second rack 39 which are meshed with the cylindrical gear 38, the first rack 40 is hinged with the first connecting rod 32, and the second rack 39 is hinged with the second connecting rod 33;
the working principle of the technical scheme is as follows: when the output rod 25 moves, the second chamber 24 needs to be supplied with air, a forward airflow is formed in the pipeline 35, when the first turbofan 36 rotates, the first turbofan 36 drives the cylindrical gear 38 to rotate, the cylindrical gear 38 drives the first rack 40 and the second rack 39 to move away from each other, the first connecting rod 32 and the second connecting rod 33 are driven to move, the first clamping block 30 is separated from the first clamping groove 28, and the second clamping block 31 is separated from the second clamping groove 29;
when the output rod 25 moves, the second chamber 24 needs to vent air, reverse airflow is formed in the pipeline 35, when the second turbofan 37 rotates, the second turbofan 37 drives the cylindrical gear 38 to rotate, the cylindrical gear 38 drives the second rack and the second rack 39 to move away from each other, the first connecting rod 32 and the second connecting rod 33 are driven to move, the first clamping block 30 is separated from the first clamping groove 28, and the second clamping block 31 is separated from the second clamping groove 29;
when the first turbofan 36 rotates, the second ratchet assembly prevents the second turbofan 37 from reversely rotating, and when the second turbofan 37 rotates, the first ratchet assembly prevents the first turbofan 36 from reversely rotating;
when the output rod 25 moves, the first turbofan 36 and the second turbofan 37 stop rotating, and the first latch 30 is engaged with the first latch slot 28, and the second latch 31 is engaged with the second latch slot 29 under the action of the third elastic element 34, so as to prevent the swing rod 18 from swinging.
The beneficial effects of the above technical scheme are: according to the cooling efficiency of the accurate control of the temperature in the cooling box 43 melting the metal, the temperature of the cooling box 43 is close to the uniform cooling, and the metal is prevented from cracking due to the unstable cooling speed.
In one embodiment, the cooling chamber 43 is fitted with a conduit 42 that restricts the path of the pull cord 26;
the working principle of the technical scheme is as follows: the guide tube 42 acts as a guide and protection against the pull cord 26;
the beneficial effects of the above technical scheme are: the arrangement mode of the pull rope 26 is beautiful, the pull rope is prevented from being worn, and the service life of the pull rope is prolonged.
In one embodiment, the first elastic member 20, the second elastic member 27 and the third elastic member 34 are springs;
the working principle of the technical scheme is as follows: the spring has the advantages of light weight, convenient installation and low price;
the beneficial effects of the above technical scheme are: the assembly of the detection equipment is convenient, and the production cost of the detection equipment is reduced.
In one embodiment, the surfaces of the rotating wheels 19 and the rotating blocks 14 are covered with an anti-slip layer;
the working principle of the technical scheme is as follows: the anti-slip layer prevents slippage between the runner 19 and the rotating block 14;
the beneficial effects of the above technical scheme are: the cooling efficiency of accurate control FRD device makes the temperature of FRD device be close to constant temperature, makes the FRD device keep good performance.
Referring to fig. 1-6, an FRD device with high heat dissipation includes: the LED chip comprises a diode chip 1 and a shell 2, wherein a bottom plate 3 is fixed inside the shell 2, pins 4 extend from the diode chip 1, the pins 4 extend out of the shell 2, the pins 4 are fixed on the bottom plate 3, the shell 2 is provided with a light-transmitting plate 5, and the light-transmitting plate 5 is positioned above the diode chip 1; the shell 2 is provided with a cooling device for communicating the inside of the shell 2 with the outside; a heat absorption layer 44 is attached to the inner wall of the shell 2, a heat dissipation layer 45 is attached to the outer wall of the shell 2, the shell 2 is provided with a connecting hole 46, a connecting body which is connected with the heat absorption layer 44 and the heat dissipation layer 45 at the same time is arranged in the connecting hole 46, and the heat absorption layer 44 and the heat dissipation layer 45 are made of metal materials;
the working principle of the technical scheme is as follows: when the FRD is used, the pin 4 is inserted into a preformed hole of a circuit board, the pin 4 and the circuit board are welded by using soldering tin, after the FRD is electrified by the circuit board, the heat absorption layer 44 absorbs heat and conducts the heat to the heat dissipation layer 45, the heat is released to the outside by the heat dissipation layer 45, the heat in the shell 2 is exchanged with the outside, and the temperature in the FRD is reduced;
the beneficial effects of the above technical scheme are: the FRD device is prevented from being damaged due to overheating by cooling the FRD device, so that the FRD device keeps good performance; FRD device radiating efficiency is high, and the stable performance.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. An FRD device manufacturing process is characterized in that the method comprises the following steps:
step one, a shell (2) is machined and molded, and a light-transmitting plate mounting opening and a pin mounting opening are reserved in the shell (2);
fixing the shell (2) on a workbench, and drilling a connecting hole (46) penetrating through the shell (2);
fixing an inner die on the inner wall of the shell (2), and fixing an outer die on the outer wall of the shell (2) to enable the connecting hole (46) to be positioned between the inner die and the outer die;
step four, heating molten metal is injected into the inner die, the outer die and the connecting hole (46);
step five, the molten metal is rapidly cooled and solidified through a cooling device, and the solidified metal forms a heat absorption layer (44) attached to the inner wall of the shell (2), a heat dissipation layer (45) attached to the outer wall of the shell (2) and a connector in the connecting hole (46);
separating the inner mold from the solidified metal, and separating the outer mold from the solidified metal;
placing the bottom plate (3) on the workbench, and fixing the diode chip (1) in the middle of the surface of one side of the bottom plate (3);
step eight, placing the bottom plate (3) and the diode chip (1) into the shell (2) from the light-transmitting plate mounting opening, and clamping and fixing the bottom plate (3) and the shell (2);
step nine, the pin (4) penetrates through the pin mounting opening, the pin (4) is abutted against the bottom plate (3), and the pin (4) is welded with the diode chip (1) through a lead;
fixing the pins (4) and the bottom plate (3) by using epoxy resin;
step eleven, clamping and fixing the light-transmitting plate (5) and the shell (2), and covering the light-transmitting plate mounting opening by the light-transmitting plate (5).
2. An FRD device manufacturing process according to claim 1, wherein the cooling device comprises a cooling box (43), the cooling box (43) is used for accommodating the shell (2) and melting metal, the cooling box (43) is provided with a shell (6) penetrating through the outer wall of the cooling box (43), a spherical accommodating cavity (7) is arranged in the shell (6), two conical bosses (8) are arranged in the accommodating cavity (7), the axes of the two bosses (8) are overlapped, the taper angles of the two bosses (8) are oppositely arranged, the shell (6) is rotatably connected with a spherical rotating block (9), the rotating shaft of the rotating block (9) is overlapped with the axes of the bosses (8), the rotating block (9) is rotatably connected with a rotating plate (10), the rotating plate (10) is a circular plate, and the edge of the rotating plate (10) is abutted and matched with the inner wall of the accommodating cavity (7), the rotating plate (10) rotating shaft is intersected with the axis of the rotating block (9), the rotating block (9) is abutted to two of the conical surfaces of the bosses (8) at the same time in the movement process, a baffle (11) is fixed on the inner wall of the accommodating cavity (7), the baffle (11) is respectively abutted to the outer wall of the bosses (8), the inner wall of the accommodating cavity (7) and the outer wall of the rotating block (9), the baffle (11) is used for separating the accommodating cavity (7), the rotating plate (10) is provided with a groove which is abutted to the two sides of the baffle (11), the bosses (8) are provided with first connecting holes (12) and second connecting holes (13) which are used for connecting the accommodating cavity (7) and the outside, the first connecting holes (12) and the second connecting holes (13) are respectively close to the baffle (11) which is arranged on the two sides of the baffle (11), and the first connecting holes (12) are communicated with the accommodating cavity (7), the second connecting hole (13) is communicated with the outside, and the shell (6) is provided with a first driving assembly for driving the rotating block (9) to rotate.
3. An FRD device manufacturing process as claimed in claim 2, wherein the first driving assembly comprises a rotating block (14) coaxially keyed on the rotating block (9), the rotating block (14) is a body of revolution with the rotating shaft of the rotating block (9) as an axis, the cooling box (43) is rotationally connected with a first bevel gear (15) and a motor (16) for driving the first bevel gear (15) to rotate, the first bevel gear (15) is coaxially rotationally connected with a moving block (17), the moving block (17) is fixedly connected with a swing rod (18), the swing rod (18) is rotationally connected with a rotating wheel (19), the rotating wheel (19) is rotationally connected with a second bevel gear (41), the second bevel gear (41) is meshed with the first bevel gear (15), and the outer wall of the rotating wheel (19) is in butt fit with the side wall of the rotating block (14), the cooling box (43) is provided with a second driving component for driving the swing rod (18) to rotate; a first elastic piece (20) is connected between the rotating block (14) and the cooling box (43), and the first elastic piece (20) applies force to the rotating block (14) to be far away from the rotating block (9).
4. An FRD device manufacturing process according to claim 3, wherein the second driving assembly comprises a cylinder (21) installed on the cooling box (43), the cylinder (21) is slidably connected with a piston (22), the piston (22) divides the cylinder (21) into a first closed chamber (23) and a second non-closed chamber (24), the piston (22) is fixedly connected with an output rod (25), the first chamber (23) is located in the accommodating cavity (7), the second chamber (24) is located outside the cooling box (43), one end of the output rod (25) far away from the cylinder (21) is connected with a pull rope (26), the other end of the pull rope (26) is connected with one end of the swing rod (18) far away from the rotating wheel (19), the swing rod (18) and the second elastic member (27) are connected, the direction of the force applied to the swing rod (18) by the second elastic piece (27) is far away from the pull rope (26); a locking component for locking the swing rod (18) is connected between the swing rod (18) and the cooling box (43).
5. An FRD device manufacturing process according to claim 4, wherein the locking assembly comprises a brake block (47) coaxially and fixedly connected to the first bevel gear (15), the brake block (47) is provided with a first clamping groove (28) and a second clamping groove (29), the cooling box (43) is hinged with a first connecting rod (32) and a second connecting rod (33), a first clamping block (30) in clamping fit with the first clamping groove (28) is fixed at the end of the first connecting rod (32), a second clamping block (31) in clamping fit with the second clamping groove (29) is fixed at the end of the second connecting rod (33), a third elastic element (34) is connected between the first connecting rod (32) and the second connecting rod (33), and the first clamping block (30) and the second clamping block (31) move away from each other under the action of the third elastic element (34), second cavity (24) is connected with pipeline (35), pipeline (35) internal rotation connect in first turbofan (36) and second turbofan (37) of cooling case (43), first turbofan (36) and second turbofan (37) revolve to opposite, first turbofan (36) pivot, second turbofan (37) pivot and pipeline (35) axis direction coincidence, first turbofan (36) turbofan coaxial coupling has cylindrical gear (38), first turbofan (36) with be connected with first ratchet assembly between cylindrical gear (38), second turbofan (37) turbofan coaxial coupling in cylindrical gear (38), be connected with second ratchet assembly between second turbofan (37) and cylindrical gear (38), first ratchet assembly direction with second ratchet assembly ratchet direction is the same, cooling case (43) sliding connection have with first rack (40) and the first ratchet assembly direction of cylindrical gear (38) meshing Two racks (39), the first rack (40) is hinged with the first connecting rod (32), and the second rack (39) is hinged with the second connecting rod (33).
6. An FRD device fabrication process as claimed in claim 5, wherein the cooling box (43) is fitted with a conduit (42) limiting the path of the drawstring (26).
7. An FRD device fabrication process as claimed in claim 6, wherein the first (20), second (27) and third (34) resilient members are springs.
8. An FRD device manufacturing process as claimed in claim 7, wherein the surface of the runner (19) and the surface of the rotating block (14) are covered with an anti-slip layer.
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| CN202011582932.3A CN112687541B (en) | 2020-12-28 | 2020-12-28 | FRD device and manufacturing process thereof |
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| CN202011582932.3A CN112687541B (en) | 2020-12-28 | 2020-12-28 | FRD device and manufacturing process thereof |
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| CN112687541A (en) | 2021-04-20 |
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