Axial diode and processing technology thereof

Abstract

The invention relates to an axial diode and a processing technology thereof, and relates to the technical field of diodes. The axial diode comprises a chip, a body part and two leads, the chip is located between the two leads and connected with the end of each lead, the body part is used for packaging the end, connected with the two leads, of the chip, the side, away from the chip, of each lead extends to form a protruding part, the diameter of the protruding part is larger than that of the chip, and the diameter of the protruding part is larger than that of the chip. And the diameter of the other part of the lead outside the body part is greater than that of the lead. The axial diode has the effect of improving the heat dissipation performance of the axial diode.

Description

Technical Field

[0001] The present application relates to the technical field of diodes, and in particular to an axial diode and a processing technology thereof. Background Art

[0002] With the continuous development of social economy and the increasing level of science and technology, my country's semiconductor industry is also booming. As an electronic device made of semiconductor materials such as silicon, selenium, and germanium, the diode has unidirectional conductivity, that is, when a forward voltage is applied to the anode and cathode of the diode, the diode is turned on, and when a reverse voltage is applied, the diode is cut off. Therefore, diodes play an important role in various electronic circuits.

[0003] In the prior art, there is an axial diode, which includes two leads, a chip and a body. The chip is located between the two leads and abuts against the ends of the leads and is fixedly connected to the ends of the two leads by welding. The body is sleeved on the chip and the two leads, thereby encapsulating the ends of the chip and the leads.

[0004] With respect to the above-mentioned related technologies, since the leads of the existing axial diodes are all thin leads with the same diameter, the heat dissipation performance of the axial diode is reduced, thereby reducing the safety performance and service life of the axial diode, so there is room for improvement. Summary of the invention

[0005] In order to improve the heat dissipation performance of an axial diode, the present application provides an axial diode and a processing technology thereof.

[0006] The present application provides an axial diode, which adopts the following technical solution: An axial diode comprises a chip, a main body and two leads, wherein the chip is located between the two leads and is connected to the end of each lead, the main body is used to encapsulate one end of the chip connected to the two leads, and a protrusion extends from one side of each lead away from the chip, wherein the diameter of the protrusion is greater than the diameter of the rest of the lead located outside the main body.

[0007] By adopting the above technical solution, compared with the prior art, the leads are all set to be thin leads with the same diameter, which leads to a decrease in the heat dissipation performance of the axial diode, thereby reducing the safety performance and service life of the axial diode; the present application sets the protrusion so that the diameter of the protrusion is larger than the diameter of the mounting portion, thereby increasing the cross-sectional area of ​​the lead at this section, thereby increasing the heat dissipation capacity of the axial diode of the present application during operation, effectively ensuring the safety performance and service life of the axial diode of the present application, and at the same time, the presence of the protrusion can also help to install and fix the axial diode under special circumstances.

[0008] Preferably, the number of the protrusions on each lead is set to be a plurality, and the protrusions on the same lead are arranged at intervals.

[0009] By adopting the above technical solution, a plurality of protrusions are provided, so that the number of protrusions on a single lead is increased, thereby further increasing the average cross-sectional area of ​​the lead, further increasing the heat dissipation performance of the axial diode of the present application, and further ensuring the safety performance and service life of the axial diode of the present application.

[0010] Preferably, each of the leads is located on a side wall at one end of the main body, and is provided with a plurality of anti-torsion parts, the plurality of anti-torsion parts are distributed corresponding to the axial direction of the lead, and each of the anti-torsion parts is embedded in the inner side wall of the main body.

[0011] By adopting the above-mentioned technical scheme and setting the anti-torsion part, the anti-torsion part can be embedded in the inner wall of the main body, thereby reducing the probability of the lead rotating relative to the main body under the action of external force, thereby increasing the connection stability between the lead and the main body, reducing the probability of a gap being generated between the lead and the main body under the action of external force, and ensuring the stability of the axial diode of the present application.

[0012] On the other hand, the present application provides a processing technology for processing an axial diode, which adopts the following technical solution: A processing technology for processing an axial diode comprises the following steps: The first lead assembly: a lead is placed in the first tunnel track for heating, and solder wire is used to feed the lead to the nail head, and after melting, it is shaped by a shaping rod to form a first tin layer; Chip assembly: Place the chip on the first tin layer, press down and cool; Another lead assembly: another lead is placed in the second tunnel track for heating, solder wire is used to feed the material to the nail head of the lead, and after melting, it is shaped by a shaping rod to form a second tin layer; Two lead wires are welded: the lead wire in the second tunnel track is placed above the lead wire in the first tunnel track, and the second tin layer on the lead wire in the second tunnel track contacts the chip, and then pressed down and cooled; Cutting excess leads: Use lead cutting equipment to cut off the excess lead on the axial diode.

[0013] Preferably, the lead cutting device includes a device body, a cutting roller, a rotating part and a transport mechanism, the cutting roller is rotatably connected to the device body, the rotating part is used to drive the cutting device to rotate, and the transport mechanism is used to displace the axial diode transported to a direction close to the cutting roller.

[0014] By adopting the above technical solution and the specific setting of the lead cutting equipment, when it is necessary to cut the leads of the axial diode of the present application, the transportation mechanism can displace the axial diode in the direction close to the shearing roller, so that the shearing roller can cut the leads of the axial diode close to itself when rotating, thereby realizing the cutting of excess leads and effectively facilitating the operation of relevant personnel.

[0015] Preferably, the transport mechanism includes a guide assembly, a transport roller and a transport member. The transport roller is located on one side of the shear roller and is rotatably connected to the equipment body. A plurality of transport grooves are provided on the side wall of the transport roller, and the lead portion of the axial diode passes out of the transport groove. The guide assembly is used to transport the lead portion of the axial diode into the transport groove, and the transport member is used to drive the transport roller to rotate, thereby bringing the axial diode close to the shear roller.

[0016] By adopting the above technical solution and the specific setting of the transport mechanism, after the guide component transports the lead of the axial diode to the transport groove on the transport roller, the transport roller rotates, thereby driving the axial diode in the transport groove to move, so that the axial diode approaches the shearing roller and is sheared by the shearing roller, thereby realizing automatic transportation of the axial diode and effectively facilitating the operation of relevant personnel.

[0017] Preferably, the transport mechanism also includes a reinforcement component, a drive roller and a drive member. The number of the reinforcement components is set to be several and corresponds one to one with the transport troughs. Each of the reinforcement components includes a reinforcement frame and a linkage member. Each of the reinforcement frames is rotatably connected to the transport roller and is located on the side of the corresponding axial diode away from the transport trough and is against the axial diode. The transport roller is sleeved on the drive roller and is rotatably connected to the drive roller. The drive member is used to drive the drive roller to rotate relative to the transport roller. The drive roller drives the reinforcement frame to rotate through the linkage member.

[0018] By adopting the above technical solution and setting the reinforcement component, when the lead of the axial diode falls onto the driving roller in the transport trough, the driving roller can use the linkage part to drive the corresponding reinforcement frame to rotate, so that the reinforcement frame and the lead are in contact with each other, so that the present application can fix the lead under the joint action of the reinforcement frame and the inner wall of the transport trough, thereby reducing the probability of accidental movement of the axial diode during transportation and shearing, and ensuring the shearing effect of the lead.

[0019] Preferably, each of the linkage members includes a linkage frame, one end of each of the linkage frames is rotationally connected to the drive roller, and the rotation point is deviated from the axis of the drive roller, and the other end is rotationally connected to the corresponding reinforcement frame, and the rotation point is deviated from the rotation point of the corresponding reinforcement frame itself.

[0020] By adopting the above technical solution and setting up the linkage frame, the driving roller can pass through several linkage frames to drive each reinforcement frame to rotate, thereby realizing the driving of each reinforcement frame, effectively facilitating the fixation of the lead, and at the same time enabling the subsequent reinforcement frame to normally fix the subsequent lead after the previous lead is cut, thereby ensuring the fixation effect of the lead.

[0021] Preferably, a tilting frame is provided below the shearing roller, and one end of the tilting frame is close to the shearing roller and is rotatably connected to the equipment body. A rotating assembly is also provided on the equipment body, and the transport roller drives the tilting frame to rotate through the rotating assembly.

[0022] By adopting the above technical solution, the tilting frame is set up so that after the shearing roller cuts the excess lead, it can fall onto the tilting frame, thereby rolling out of the equipment body. At the same time, the existence of the rotating component can also drive the tilting frame to rotate during the downward fall of the axial diode, thereby reducing the distance between the top of the tilting frame and the axial diode, reducing the impact on the axial diode, and effectively protecting the axial diode.

[0023] Preferably, the rotating assembly includes an additional frame, an abutment frame and a transmission frame, the additional frame is arranged on the transport roller, the abutment frame is slidably connected to the equipment body and is located on the displacement path of the additional frame, one end of the transmission frame is rotationally connected to the abutment frame, and the other end is rotationally connected to the tilting frame.

[0024] By adopting the above technical solution and setting the rotating assembly, the transport roller can drive the additional frame to rotate when it rotates, so that the additional frame gradually approaches the abutment frame and finally abuts against the abutment frame, thereby pushing the abutment frame to slide, so that the abutment frame drives the tilting frame to rotate through the transmission frame, thereby realizing the driving of the tilting frame, and at the same time realizing the linkage between the transport roller and the tilting frame, which is convenient for the operation of relevant personnel.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The protrusion is arranged so that the diameter of the protrusion is larger than the diameter of the mounting portion, thereby increasing the cross-sectional area of ​​the lead at this section, thereby increasing the heat dissipation capacity of the axial diode of the present application during operation, effectively ensuring the safety performance and service life of the axial diode of the present application. At the same time, the presence of the protrusion can also help to install and fix the axial diode under special circumstances; 2. The specific setting of the lead cutting device enables the transportation mechanism to move the axial diode toward the direction close to the cutting roller when the lead of the axial diode of the present application needs to be cut, so that the cutting roller can cut the lead of the axial diode close to itself when rotating, thereby realizing the cutting of the excess lead, which effectively facilitates the operation of relevant personnel; 3. The specific setting of the transport mechanism enables the transport roller to rotate after the guide assembly transports the lead of the axial diode to the transport groove on the transport roller, thereby driving the axial diode in the transport groove to move, so that the axial diode approaches the shearing roller and is sheared by the shearing roller, thereby realizing the automatic transportation of the axial diode and effectively facilitating the operation of relevant personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram used to reflect the overall axial diode in Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram of the structure used to reflect the anti-torsion part in Example 1 of the present application.

[0028] Figure 3 It is a schematic diagram used to illustrate the overall lead cutting equipment in Example 2 of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the transport roller used to illustrate the embodiment 2 of the present application.

[0030] Figure 5 It is a schematic diagram used to illustrate the overall lead cutting equipment in Example 3 of the present application.

[0031] Figure 6 It is a structural schematic diagram used to embody the tilting frame in Example 3 of the present application.

[0032] Figure 7 It is a structural schematic diagram used to reflect the reinforcement component in Example 3 of the present application.

[0033] Figure 8 It is a structural schematic diagram used to embody the transmission frame in Example 3 of the present application.

[0034] Explanation of the reference numerals: 1. chip; 2. main body; 3. lead; 31. protruding portion; 32. nail head; 33. anti-torsion portion; 4. equipment body; 5. shearing roller; 51. shearing blade; 6. rotating member; 7. transport mechanism; 71. guide assembly; 711. guide frame; 7111. guide groove; 72. transport roller; 721. roller body; 722. transport sheet; 7221. transport groove; 73. transport member; 74. reinforcement assembly; 741. reinforcement frame; 742. linkage member; 7421. linkage frame; 75. driving roller; 76. driving member; 8. tilting frame; 9. rotating assembly; 91. additional frame; 911. abutment portion; 92. abutment frame; 93. transmission frame; 94. reset spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] Embodiment 1: Embodiment 1 of the present application discloses an axial diode. Figure 1 and Figure 2 The axial diode includes a chip 1, a body 2 and two leads 3. The chip 1 is located between the two leads 3 and connected to the ends of each lead 3. The body 2 is used to encapsulate one end of the chip 1 connected to the two leads 3. A protrusion 31 extends from one side of each lead 3 away from the chip 1, and the diameter of the protrusion 31 is larger than the diameter of the rest of the lead 3.

[0037] Reference Figure 1 and Figure 2 , each lead 3 is provided with a nail head 32 at one end close to another lead 3, and the nail head 32 is integrally formed with the lead 3. Each nail head 32 is truncated, and a plurality of anti-torsion parts 33 are provided on the side wall of each nail head 32, and the plurality of anti-torsion parts 33 are arranged at equal angles along the axis circumference of the nail head 32. Each anti-torsion part 33 protrudes from the nail head 32. The chip 1 is located between the two nail heads 32 and is fixedly connected to the two nail heads 32.

[0038] Reference Figure 1 and Figure 2 The main body 2 is sleeved on two nail heads 32 and one chip 1 and is fixedly connected to each nail head 32. The main body 2 is cylindrical, and the anti-torsion portion 33 on each lead 3 is embedded in the inner side wall of the main body 2.

[0039] Reference Figure 1 and Figure 2, there are several protrusions 31 on each lead 3, and they are all located on the side of the lead 3 away from the nail head 32. Each protrusion 31 is integrally formed with the lead 3. In the embodiment of the present application, there are two protrusions 31 on each lead 3, and the two protrusions 31 are spaced apart along the axial direction of the lead 3.

[0040] The implementation principle of an axial diode in Example 1 of the present application is: the presence of the protrusion 31 makes the diameter of the protrusion 31 larger than the diameter of other positions of the lead 3, thereby increasing the cross-sectional area of ​​the lead 3 at this section, thereby increasing the heat dissipation capacity of the axial diode of the present application during operation, effectively ensuring the safety performance and service life of the axial diode of the present application. At the same time, the presence of the protrusion 31 can also help to install and fix the axial diode under special circumstances.

[0041] On the other hand, the present application also provides a processing technology for processing an axial diode, comprising the following steps: S1, assembling one lead: placing one lead 3 in the first tunnel track and heating it to the process temperature, and then feeding the solder wire to the nail head 32 of the lead 3, the solder wire is melted into liquid by the temperature of the lead 3, and then shaped and solidified by the shaping rod to form the first tin layer; S2, chip assembly: placing chip 1 on the first tin layer, pressing it down and cooling it; S3, assembling another lead: placing another lead 3 in the second tunnel track and heating it to the process temperature, and then feeding solder wire to the nail head 32 of the lead 3, the solder wire is melted into liquid by the temperature of the lead 3, and then shaped and solidified by the shaping rod to form a second tin layer; S4, two lead wires are pressed and welded: the lead wire 3 in the second tunnel track is placed above the lead wire 3 in the first tunnel track, and the second tin layer on the lead wire 3 in the second tunnel track contacts the chip 1, and then pressed down and cooled; S5. Cutting excess leads: Cutting excess parts of the leads 3 on the axial diode by using a lead cutting device.

[0042] Embodiment 2: Embodiment 2 of the present application discloses a lead wire cutting device, and the lead wire cutting device is the lead wire cutting device in embodiment 1. Figure 3 and Figure 4 The lead wire cutting device includes a device body 4, a shearing roller 5, a rotating member 6 and a transport mechanism 7. The device body 4 is placed on the ground. The transport mechanism 7 includes a guide assembly 71, a transport roller 72 and a transport member 73. The guide assembly 71 includes two guide frames 711. The bottom end of each guide frame 711 is fixedly mounted on the top of the device body 4 and extends upward. The two guide frames 711 are distributed along the length direction of the device body 4.

[0043] Reference Figure 3 and Figure 4 A guide groove 7111 is formed on the side wall of each guide frame 711, one end of each guide groove 7111 extends upward and extends out of the guide frame 711, and the other end of each guide groove 7111 is bent downward and extends vertically downward at the bottom and extends out of the bottom of the guide frame 711. The body of the axial diode is placed in the space between the two guide frames 711, and the two lead parts are placed in the two guide grooves 7111 respectively, and the ends of the lead parts are passed through the corresponding guide grooves 7111.

[0044] Reference Figure 3 and Figure 4 The transport roller 72 is located directly below the bottom of the guide groove 7111, and includes a roller body 721 and a plurality of transport sheets 722. Both ends of the roller body 721 are rotatably connected to the device body 4 through bearings. In the embodiment of the present application, the transport member 73 is configured as a reduction motor, which is fixedly mounted on the device body 4, and the output shaft is fixedly connected to one end of the roller body 721 through a coupling to drive the roller body 721 to rotate.

[0045] Reference Figure 3 and Figure 4 In the embodiment of the present application, two transport sheets 722 are provided at both ends of each transport roller 72, and the two transport sheets 722 are arranged at intervals, and each transport sheet 722 is fixedly sleeved on the end of the transport roller 72 by bolts. A plurality of transport grooves 7221 are penetrated through the side wall of each transport sheet 722, and the plurality of transport grooves 7221 are evenly distributed at equal angles along the axis of the transport sheet 722. Each transport groove 7221 is provided on a side of the transport sheet 722 away from the center of the roller body 721, so that the lead wire portion can directly fall down into the corresponding transport groove 7221.

[0046] Reference Figure 3 and Figure 4 , the shearing roller 5 is located on one side of the transport roller 72, and the axis of the shearing roller 5 is arranged parallel to the axis of the roller body 721 and higher than the axis of the roller body 721. Both ends of the shearing roller 5 are rotatably connected to the device body 4 through bearings. In the embodiment of the present application, the driving member 76 is configured as a reduction motor, which is fixedly mounted on the device body 4, and the output shaft is fixedly connected to one end of the shearing roller 5 through a coupling to achieve the driving of the roller body 721 to rotate.

[0047] Reference Figure 3 and Figure 4Two shear blades 51 are provided at both ends of the shear roller 5, and the two shear blades 51 are fixedly mounted on the shear roller 5. Each shear blade 51 is located between the two transport pieces 722 on the corresponding ends of the roller body 721, and the sum of the radius of the shear blade 51 and the radius of the transport piece 722 is greater than the straight-line distance between the axis of the shear blade 51 and the axis of the transport piece 722, so that the shear blade 51 can shear the lead wire portion.

[0048] Reference Figure 3 and Figure 4 A tilting frame 8 is also provided on the equipment body 4. The tilting frame 8 is located directly below the shearing roller 5 and is fixedly installed on the equipment body 4. The end of the tilting frame 8 away from the shearing roller 5 is tilted downward so that the sheared axial diode can fall onto the tilting frame 8 and roll out of the equipment body 4 through the tilting frame 8.

[0049] The implementation principle of a lead shearing device in Example 2 of the present application is as follows: when it is necessary to shear the lead portion of the axial diode, the lead portion of the axial diode is placed at the top of the guide groove 7111 respectively, and the lead portion of the axial diode is displaced downward under the guidance of the guide groove 7111, and falls into the transport groove 7221 on the corresponding transport sheet 722. Thereafter, the transport roller 72 is driven by the transport member 73 to rotate, so that the axial diode on the transport roller 72 is transported and gradually approaches the shearing roller 5. When the shearing blade 51 on the shearing roller 5 contacts the lead portion on the axial diode, the shearing blade 51 shears the lead portion. The sheared axial diode falls onto the tilting frame 8 and rolls out of the equipment body 4 via the tilting frame 8.

[0050] Embodiment 3: The difference between the third embodiment of the present application and the second embodiment is that: Figure 5 , Figure 6 and Figure 7 The transport mechanism 7 further includes a reinforcement assembly 74, a driving roller 75 and a driving member 76, and the roller body 721 is hollow inside. In the embodiment of the present application, the number of roller bodies 721 is set to two, and the insides of the two roller bodies 721 are both hollow. Each roller body 721 is sleeved on the driving roller 75 and is respectively located at both ends of the driving roller 75, and is rotatably connected to the driving roller 75 through a bearing.

[0051] Reference Figure 5 , Figure 6 and Figure 7In the embodiment of the present application, the number of the transport members 73 is set to two, and the two transport members 73 correspond to the two roller bodies 721. Each transport member 73 is a combination structure of a reduction motor and a gear set. Each of the reduction motors is fixedly mounted on the device body 4, one of the gears in the gear set is fixedly sleeved on the output shaft of the reduction motor, and the other gear is driven by the gear and fixedly sleeved on the corresponding roller body 721 to realize the driving of the roller body 721 to rotate.

[0052] Reference Figure 6 and Figure 7 In the embodiment of the present application, the reinforcement components 74 are provided in two groups, and the two groups of reinforcement components 74 correspond to the two roller bodies 721, and both correspond to the transport sheet 722 on the corresponding roller body 721 that is closest to the guide frame 711, and are located on the side of the corresponding transport sheet 722 that is close to the other roller body 721. The number of reinforcement components 74 in each group is set to be a plurality, and the number of reinforcement components 74 in each group is the same as the number of transport slots 7221 on the corresponding transport sheet 722.

[0053] Reference Figure 6 and Figure 7 Each reinforcement assembly 74 includes a reinforcement frame 741 and a linkage member 742, and each linkage member 742 includes a linkage frame 7421. The middle portion of each reinforcement frame 741 is rotatably connected to the corresponding transport sheet 722 through a pin shaft, and each reinforcement frame 741 is located on the side of the axial diode lead portion away from the transport groove 7221, and is against the corresponding axial diode to increase the stability of the axial diode when it moves.

[0054] Reference Figure 6 and Figure 7 One end of each linkage frame 7421 is rotatably connected to the end of the corresponding reinforcement frame 741 away from the corresponding lead part through a pin shaft, and the other end of each linkage frame 7421 is rotatably connected to the outer wall of the driving roller 75 through a pin shaft, and the axis of the rotating connection is not the same as the axis of the driving roller 75 itself.

[0055] Reference Figure 5 , Figure 6 and Figure 7 In the initial state, the driving roller 75 and the roller body 721 have the same rotation direction and rotation angular velocity, and the reinforcement frame 741 is in the open state. When the lead portion falls into the transport groove 7221 through the guide groove 7111, the rotation speed of the driving roller 75 changes, so that the driving roller 75 rotates relative to the roller body 721. At this time, the driving roller 75 drives each linkage frame 7421 to rotate, so that the linkage frame 7421 drives the corresponding reinforcement frame 741 to rotate, and each reinforcement frame 741 is driven, so that the reinforcement frame 741 is attached to one side of the lead portion to reinforce the lead portion.

[0056] Reference Figure 5 , Figure 6 and Figure 7 After that, the rotation speed of the driving roller 75 changes and becomes the same as the rotation speed of the roller body 721. After the shearing blade 51 on the shearing roller 5 completes shearing of the lead wire portion, the rotation speed of the driving roller 75 changes again, causing the driving roller 75 to rotate in the opposite direction relative to the roller body 721. At this time, the driving roller 75 drives the reinforcement frame 741 to rotate in the opposite direction through the linkage frame 7421, causing the reinforcement frame 741 to open again, thereby causing the axial diode to fall onto the tilting frame 8. After that, the next axial diode falls into the next transport trough 7221.

[0057] Reference Figure 5 , Figure 7 and Figure 8 , one end of the tilting frame 8 close to the shearing roller 5 is rotatably connected to the equipment body 4. A rotating assembly 9 is also provided on the equipment body 4. In the embodiment of the present application, the number of the rotating assemblies 9 is set to two, and the two rotating assemblies 9 are respectively located on both sides of the tilting frame 8. Each rotating assembly 9 includes an additional frame 91, an abutting frame 92 and a transmission frame 93. Each additional frame 91 is fixedly sleeved on the corresponding roller body 721. Each additional frame 91 has a plurality of abutting portions 911 extending outwardly. The number of the abutting portions 911 is the same as the number of the transport grooves 7221 on the transport sheet 722.

[0058] Reference Figure 5 and Figure 8 Each abutting frame 92 is slidably connected to the equipment body 4, and each abutting frame 92 is located on the displacement path of each abutting portion 911 on the corresponding additional frame 91. One end of each transmission frame 93 is rotatably connected to the corresponding abutting frame 92 through a pin shaft, and the other end of each transmission frame 93 is rotatably connected to the tilting frame 8 through a pin shaft.

[0059] Reference Figure 5 and Figure 8 Each abutment frame 92 is also provided with a reset spring 94, and each reset spring 94 is located on the side of the corresponding abutment frame 92 away from the tilting frame 8, and one end of each reset spring 94 is against the corresponding abutment frame 92, and the other end of each reset spring 94 is against the equipment body 4, so as to realize the reset of the abutment frame 92 through its own elastic force.

[0060] Reference Figure 5 , Figure 7 and Figure 8In the initial state, the end of the tilt frame 8 away from the shearing roller 5 is located at the lowest position. When the shearing roller 5 completes shearing of the lead wire, the reinforcement frame 741 rotates relative to the transport sheet 722, and when it is gradually opened, the abutment portion 911 on the additional frame 91 abuts against the abutment frame 92, and gradually pushes the abutment frame 92 to slide, so that the abutment frame 92 drives the tilt frame 8 to rotate upward through the transmission frame 93. When the reinforcement frame 741 is completely opened, the abutment frame 92 is located at the end of its own sliding path. At this time, the end of the abutment frame 92 away from the shearing roller 5 is located at the top of its own displacement path, and then the axial diode falls onto the abutment frame 92.

[0061] The implementation principle of a lead cutting device in Example 3 of the present application is as follows: when the lead portion passes through the guide groove 7111 and falls into the transport groove 7221, the rotation speed of the drive roller 75 changes, so that the drive roller 75 rotates relative to the roller body 721. At this time, the drive roller 75 drives each linkage frame 7421 to rotate, so that the linkage frame 7421 drives the corresponding reinforcement frame 741 to rotate, thereby driving each reinforcement frame 741, so that the reinforcement frame 741 is attached to one side of the lead portion, and the lead portion is reinforced.

[0062] After that, the rotation speed of the driving roller 75 changes and becomes the same as the rotation speed of the roller body 721. After the shearing blade 51 on the shearing roller 5 completes shearing of the lead wire portion, the rotation speed of the driving roller 75 changes again, causing the driving roller 75 to rotate in the opposite direction relative to the roller body 721. At this time, the driving roller 75 drives the reinforcement frame 741 to rotate in the opposite direction through the linkage frame 7421, causing the reinforcement frame 741 to open again, thereby causing the axial diode to fall onto the tilting frame 8. After that, the next axial diode falls into the next transport trough 7221.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An axial diode, comprising a chip (1), a body (2) and two leads (3), wherein the chip (1) is located between the two leads (3) and is connected to the end of each lead (3), and the body (2) is used to encapsulate one end of the chip (1) connected to the two leads (3), characterized in that: A protrusion (31) extends from one side of each lead (3) away from the chip (1), and the diameter of the protrusion (31) is greater than the diameter of the remaining portion of the lead (3) located outside the main body (2).

2. An axial diode according to claim 1, characterized in that: The number of the protrusions (31) on each lead (3) is set to be a plurality, and the protrusions (31) on the same lead (3) are arranged at intervals.

3. An axial diode according to claim 2, characterized in that: Each of the leads (3) is located on a side wall at one end of the main body (2) and is provided with a plurality of anti-torsion parts (33). The plurality of anti-torsion parts (33) are distributed in a direction corresponding to the axis of the lead (3), and each of the anti-torsion parts (33) is embedded in the inner side wall of the main body (2).

4. A process for machining an axial diode according to claim 1, characterized in that: The steps include: A lead wire assembly: a lead wire (3) is placed in a first tunnel track for heating, and solder wire is fed to the nail head of the lead wire (3). After the solder wire is melted, it is shaped by a shaping rod to form a first tin layer. Chip assembly: placing the chip (1) on the first tin layer, pressing it down and then cooling it; Another lead assembly: another lead (3) is placed in the second tunnel track for heating, solder wire is fed to the nail head of the lead (3), and after melting, it is shaped by a shaping rod to form a second tin layer; Two lead wires are pressed and welded: the lead wire (3) in the second tunnel track is placed above the lead wire (3) in the first tunnel track, and the second tin layer on the lead wire (3) in the second tunnel track is contacted with the chip (1), and then pressed down and cooled; Cutting excess leads: Using a lead cutting device, cut off the excess part of the lead (3) on the axial diode.

5. A process for machining an axial diode according to claim 4, characterized in that: The lead cutting device comprises a device body (4), a cutting roller (5), a rotating member (6) and a transport mechanism (7); the cutting roller (5) is rotatably connected to the device body (4); the rotating member (6) is used to drive the cutting device to rotate; and the transport mechanism (7) is used to displace the axial diode transported thereto in a direction close to the cutting roller (5).

6. A process for machining an axial diode according to claim 5, characterized in that: The transport mechanism (7) comprises a guide assembly (71), a transport roller (72) and a transport member (73); the transport roller (72) is located on one side of the shear roller (5) and is rotatably connected to the device body (4); a plurality of transport grooves (7221) are provided on the side wall of the transport roller (72), and the lead wire portion of the axial diode passes out of the transport groove (7221); the guide assembly (71) is used to transport the lead wire portion of the axial diode into the transport groove (7221); and the transport member (73) is used to drive the transport roller (72) to rotate, thereby bringing the axial diode close to the shear roller (5).

7. A process for machining an axial diode according to claim 6, characterized in that: The transport mechanism (7) further comprises a reinforcement component (74), a driving roller (75) and a driving member (76). The number of the reinforcement components (74) is set to be several and corresponds to the transport trough (7221) one by one. Each of the reinforcement components (74) comprises a reinforcement frame (741) and a linkage member (742). Each of the reinforcement frames (741) is rotatably connected to the transport roller (72) and is located on the side of the corresponding axial diode away from the transport trough (7221) and is against the axial diode. The transport roller (72) is sleeved on the driving roller (75) and is rotatably connected to the driving roller (75). The driving member (76) is used to drive the driving roller (75) to rotate relative to the transport roller (72). The driving roller (75) drives the reinforcement frame (741) to rotate through the linkage member (742).

8. The process for machining an axial diode according to claim 7, characterized in that: Each linkage member (742) comprises a linkage frame (7421), one end of each linkage frame (7421) is rotationally connected to the driving roller (75), and the rotation point is deviated from the axis of the driving roller (75), and the other end is rotationally connected to the corresponding reinforcement frame (741), and the rotation point is deviated from the rotation point of the corresponding reinforcement frame (741) itself.

9. The process for machining an axial diode according to claim 6, characterized in that: A tilting frame (8) is also provided below the shearing roller (5). One end of the tilting frame (8) close to the shearing roller (5) is rotatably connected to the equipment body (4). A rotating assembly (9) is also provided on the equipment body (4). The transport roller (72) drives the tilting frame (8) to rotate via the rotating assembly (9).

10. A process for machining an axial diode according to claim 9, characterized in that: The rotating assembly (9) comprises an additional frame (91), an abutting frame (92) and a transmission frame (93); the additional frame (91) is arranged on the transport roller (72); the abutting frame (92) is slidably connected to the equipment body (4) and is located on the displacement path of the additional frame (91); one end of the transmission frame (93) is rotationally connected to the abutting frame (92) and the other end is rotationally connected to the tilting frame (8).

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