Diode processing pin cutting apparatus

Abstract

The present application relates to the technical field of diode pin cutting, and particularly relates to a diode processing pin cutting equipment. The diode processing pin cutting equipment comprises a rack, a feeding plate, a first electric push rod, a lifting rod, a first lead screw motor and a first guide rod. The feeding plate is symmetrically connected to the rack, and one side of the feeding plate is provided with an inclined surface. The first electric push rod is symmetrically installed on the rack. The lifting rod is connected to the telescopic rod of the first electric push rod. The first lead screw motor is installed on the lifting rod. The first guide rod is connected to the lifting rod. The limiting plate is slidingly connected to the first guide rod, and the side surface of the limiting plate is uniformly and spacedly provided with square holes. The diode pin bending can be automatically straightened under the driving of the lifting rod through the staggered design cooperation of the limiting plate, the limiting plug rod and the square holes, the pin axis can be ensured to be aligned, the two pins can be simultaneously differentiated and cut through the wave-shaped design of the cutting knife and the collaborative action of the horizontal plate, the problems of the uneven cut and the excessive residual length caused by the pin deformation of the traditional equipment can be effectively solved, and the cutting precision and consistency can be significantly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diode pin cutting, and in particular to a diode processing pin cutting equipment. BACKGROUND

[0002] In the manufacturing process of electronic components, diodes are a kind of basic and key components, and the processing precision and efficiency of diodes directly affect the quality and stability of subsequent circuit assembly. The pin cutting process is an essential link after diode packaging, and its purpose is to trim the excess length of the pin to a standard size to meet the requirements of automatic assembly and welding process.

[0003] At present, the cutting of diode pins in the industry is still mostly handled by manual methods, that is, the excess part of the pin is removed by manual cutting. This method not only has high labor intensity, but also has low work efficiency, and is difficult to meet the needs of mass production. Although some large manufacturers have adopted automatic pin cutting equipment for processing, the existing equipment generally uses clamps to fix the diode body and drives the cutting knife to move horizontally through a pneumatic or electric system to cut at the predetermined position. However, it is found in actual application that the diode pin is prone to bending or deviation during transportation, feeding and clamping, resulting in an unstable axial position and an inaccurate alignment with the preset cutting path of the cutting knife. The existing pin cutting equipment generally lacks the function of automatically straightening the pin, so it cannot accurately cut when the pin is deformed, which may cause problems such as irregular cutting, excessive length of residual, and even damage to the device body. This not only reduces the success rate and consistency of pin cutting operation, but also affects the overall production efficiency and product yield. SUMMARY

[0004] Therefore, the present application provides a diode processing pin cutting equipment, which can overcome the shortcomings of the existing pin cutting equipment that may cause cutting deviation due to pin deformation when cutting diodes, resulting in problems such as irregular cutting, excessive length of residual, and even damage to the device body.

[0005] The technical scheme of the present application is as follows: a diode processing pin cutting equipment, comprising: a rack; a feeding plate symmetrically connected to the rack, and one side of the feeding plate being provided with an inclined surface; first electric push rods symmetrically installed on the rack; a lifting rod connected to the extension rod of the first electric push rod; a first lead screw motor installed on the lifting rod; a first guide rod connected to the inside of the lifting rod; a limiting plate slidingly connected to the first guide rod, the side surface of the limiting plate being uniformly and spacedly provided with square holes, the limiting plate being slidingly connected with the lifting rod, and the limiting plate being threadedly connected with the lead screw of the first lead screw motor; limiting pins symmetrically and spacedly connected to the side surface of the limiting plate; a cutting assembly provided on the rack for cutting the pin of the diode; and a limiting assembly provided on the feeding plate for limiting the diode on the feeding plate.

[0006] As a preferred technical scheme of the present application, the cutting assembly comprises: a lifting mechanism arranged on the rack; mounting rods symmetrically arranged on the lifting mechanism, the lifting mechanism being used to drive the mounting rods to lift; second guide rods slidably connected to the mounting rods; a cross plate connected to the end of one of the second guide rods; a cutter connected to the end of the other second guide rod; and second electric push rods mounted on the side of the mounting rods, with the telescopic rods of the second electric push rods being connected to the cross plate and the cutter respectively.

[0007] As a preferred technical scheme of the present application, the lifting mechanism comprises: U-shaped rods symmetrically connected to the rack; third guide rods symmetrically connected to one of the U-shaped rods, with the third guide rods being slidably connected to the mounting rods; threaded rods symmetrically rotatably connected to the other U-shaped rods, with the threaded rods being threadedly connected to the mounting rods; a drive motor mounted on the rack, with the output shaft of the drive motor being connected to the end of one of the threaded rods; and a belt pulley assembly arranged between the two threaded rods for transmission.

[0008] As a preferred technical scheme of the present application, the limiting assembly comprises: fourth guide rods connected to one of the material feeding plates; a positioning frame slidably connected to the fourth guide rods, with the positioning frame being slidably connected to the material feeding plate; and a second screw motor mounted on the other material feeding plate, with the screw rod of the second screw motor being threadedly connected to the positioning frame.

[0009] As a preferred technical scheme of the present application, it further comprises: air bags uniformly and intervally connected to the side of one of the limiting plates; and a control assembly arranged in one of the limiting plates and used to control the air bags to expand or contract.

[0010] As a preferred technical scheme of the present application, the control assembly comprises: a hollow frame connected to the square hole on one side; a piston frame slidably connected to the hollow frame; a connecting pipe having two ends connected to the hollow frame and the air bag and keeping communication; and a connecting spring having two ends connected to the hollow frame and the piston frame.

[0011] As a preferred technical scheme of the present application, it further comprises: a material guiding inclined plate connected to the bottom of the material feeding plate.

[0012] As a preferred technical scheme of the present application, it further comprises: a collecting frame connected to the rack and located directly below the material feeding plate.

[0013] Beneficial effects: 1. The present application can automatically straighten the curved diode pins under the drive of the lifting rod through the staggered design of the limiting plate, the limiting plug rod and the square hole, ensure the alignment of the pin axis, and can simultaneously cut the two pins differently through the wave-shaped design of the cutter and the coordinated action of the cross plate, effectively solve the problems of uneven cut and excessive residue caused by pin deformation in traditional equipment, and significantly improve the cutting precision and consistency.

[0014] 2、The diodes can be positioned and cut in batches by the cooperation of the positioning frame and the second screw motor, so that the mixing of materials is avoided, meanwhile, the air bag is inflated under the action of the control assembly, so that flexible support is formed at the root of the pin, the connection part of the pin and the diode is prevented from being damaged by the thrust during straightening, the risk of pin breakage is greatly reduced, and the yield of products is ensured.

[0015] 3、The pin is pre-straightened by the guide slope plate, the cutter is driven to rise and fall quickly by the lifting mechanism, and the waste is automatically collected by the collecting frame, so that the whole process automation from straightening, cutting to discharging is realized, manual intervention is significantly reduced, the production demand of large batches is met, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the application.

[0017] Figure 2 It is a schematic diagram of the diodes arranged on the discharging plate.

[0018] Figure 3 It is a schematic diagram of the installation of the lifting rod, the first screw motor, the first guide rod and the limiting plate.

[0019] Figure 4 It is a schematic diagram of the specific structure of the limiting plate and the limiting plug rod.

[0020] Figure 5 It is a schematic diagram of the installation of the second guide rod, the cross plate, the cutter and the second electric push rod.

[0021] Figure 6 It is a schematic diagram of the specific structure of the cutter.

[0022] Figure 7 It is a schematic diagram of the installation of the cutting assembly.

[0023] Figure 8 It is a schematic diagram of the installation of the limiting assembly.

[0024] Figure 9 It is a schematic diagram of the specific structure of the positioning frame.

[0025] Figure 10 It is a schematic diagram of the installation of the air bag.

[0026] Figure 11 It is a schematic diagram of the installation of the hollow frame, the piston frame and the connecting pipe.

[0027] Figure 12 It is a schematic diagram of the specific structure of the hollow frame, the piston frame, the connecting pipe and the connecting spring.

[0028] Wherein: 001-Diode, 1-Frame, 2-Feeding plate, 201-Sloping surface, 3-First electric push rod, 4-Lifting rod, 5-First lead screw motor, 6-First guide rod, 7-Limiting plate, 701-Square hole, 8-Limiting insertion rod, 9-Mounting rod, 10-Second guide rod, 11-Horizontal plate, 12-Cutter, 13-Second electric push rod, 14-U-shaped rod, 15-Third guide rod, 16-Threaded rod, 17-Drive motor, 18-Pulley assembly, 19-Fourth guide rod, 20-Positioning frame, 21-Second lead screw motor, 22-Airbag, 23-Hollow frame, 24-Piston frame, 25-Connecting pipe, 26-Connecting spring, 27-Guide inclined plate, 28-Collection frame. Detailed Implementation

[0029] Example: A diode processing lead cutting device, such as... Figures 1-9 As shown, the machine includes a frame 1, a feeding plate 2, a first electric push rod 3, a lifting rod 4, a first lead screw motor 5, a first guide rod 6, a limiting plate 7, a limiting insert rod 8, a cutting assembly, and a limiting assembly. The feeding plates 2 are symmetrically connected to the upper part of the frame 1. The longitudinal cross-section of the feeding plates 2 is an inverted "T" shape, and a gap is left between the lower parts of the two feeding plates 2, which allows the pins of diode 001 to pass through (e.g., ...). Figure 2 As shown), the two feeding plates 2 cooperate to limit the diode 001 on them. The lower right side of each feeding plate 2 has an inclined surface 201. The upper part of the frame 1 is symmetrically equipped with first electric push rods 3. Lifting rods 4 are connected to the telescopic rods of both first electric push rods 3. First screw motors 5 are installed on the left side of each of the two lifting rods 4. First guide rods 6 are connected to the right side of each of the two lifting rods 4. Limiting plates 7 are slidably connected to both first guide rods 6, and the limiting plates 7 are slidably connected to the lifting rods 4. The left side of the limiting plates 7 is threadedly connected to the screw of the first screw motor 5. The two limiting plates 7... Multiple square holes 701 are evenly spaced on each side of the two limiting plates 7 that are close to each other, and the square holes 701 on the front and rear sides are staggered. Multiple sets of limiting rods 8 are evenly connected on each side of the two limiting plates 7 that are close to each other. Each set of limiting rods 8 has two rods, and the limiting rods 8 on the front and rear sides are staggered. When the two limiting plates 7 move to the side that is close to each other, the limiting rods 8 can be inserted into the square holes 701 that are aligned with their longitudinal direction. The frame 1 is provided with a cutting component for cutting the pins of the diode 001, and the feeding plate 2 is provided with a limiting component for limiting the diode 001 on the feeding plate 2.

[0030] like Figures 5-7As shown, the cutting assembly includes mounting rods 9, second guide rods 10, a cross plate 11, a cutter 12, second electric push rods 13 and a lifting mechanism. The mounting rods 9 are provided in pairs and symmetrically arranged front and back. The right parts of the two mounting rods 9 are slidably connected with the second guide rods 10. The front end of the rear second guide rod 10 is connected with the cross plate 11. The rear end of the front second guide rod 10 is connected with the cutter 12. The rear end of the cutter 12 is in a wave shape, and the bottom of the wave is provided with two lowest points staggered, so that the cutter 12 can cut the two pins of the diode 001 at the same time, and the lengths of the two pins are different, which is convenient for distinguishing the two pins of the diode 001. The left parts of the two mounting rods 9 are provided with the second electric push rods 13, and the telescopic rods of the two second electric push rods 13 are connected with the cross plate 11 and the cutter 12 respectively. The rack 1 is provided with a lifting mechanism for driving the mounting rods 9 to lift. The lifting mechanism includes U-shaped rods 14, third guide rods 15, threaded rods 16, a driving motor 17 and a belt pulley assembly 18. The left and right sides of the rack 1 are connected with the U-shaped rods 14. The left U-shaped rod 14 is symmetrically connected with the third guide rods 15 front and back. The left parts of the two mounting rods 9 are slidably connected with the two third guide rods 15 respectively. The right U-shaped rod 14 is rotatably connected with the threaded rods 16 front and back. The right parts of the two mounting rods 9 are threadedly connected with the two threaded rods 16 respectively. The right rear upper part of the rack 1 is provided with the driving motor 17, and the output shaft of the driving motor 17 is connected with the upper end of the rear threaded rod 16. The belt pulley assembly 18 is composed of two belt pulleys and a flat belt. The two belt pulleys are connected with the lower ends of the two threaded rods 16 respectively. The flat belt is wound around the two belt pulleys, so that the two threaded rods 16 can be driven by the belt pulley assembly 18.

[0031] As shown in Figure 8 and Figure 9 The limiting assembly includes fourth guide rods 19, a positioning frame 20 and a second lead screw motor 21. The left part of the rear feeding plate 2 is connected with the fourth guide rod 19. The positioning frame 20 is slidably connected with the fourth guide rod 19. The front and rear sides of the positioning frame 20 are slidably connected with the two feeding plates 2 respectively. The positioning frame 20 is hollow. The right side of the positioning frame 20 is a vertical plane for positioning the diode 001 on the feeding plate 2. The left side of the positioning frame 20 is designed as an open type. The left part of the front feeding plate 2 is provided with the second lead screw motor 21, and the lead screw of the second lead screw motor 21 is threadedly connected with the positioning frame 20.

[0032] When the device needs to be used, first of all, the device is installed in the designated position, under the action of the inclined surface 201, the feeding conveyor can convey the diode 001 to the left between the two feeding plates 2, the two feeding plates 2 can limit the diode 001 on them, and by pushing the diode 001 on the right to the diode 001 on the left, the diode 001 can move to the left on the feeding plate 2, when the feeding plate 2 has a specified number of diodes 001, the leftmost diode 001 will contact the positioning frame 20, the positioning frame 20 plays a positioning role, at this time the conveyor no longer conveys the diode 001 to the feeding plate 2; Then drive the front and rear limiting plates 7 to move to the side close to each other along the first guide rod 6 through the first lead screw motor 5, the limiting plate 7 drives the front and rear limiting rods 8 to move to the side close to each other, so that the limiting rod 8 is inserted into the square hole 701 corresponding to it, at this time the two adjacent groups of limiting rods 8 and the two limiting plates 7 can form a rectangular space, and each rectangular space has a pin of a diode 001. It should be noted that the limiting rod 8 and the limiting plate 7 do not contact the root of the pin, then drive the lifting rod 4 to move downward through the first electric push rod 3, the lifting rod 4 can drive the limiting plate 7 and the limiting rod 8 to move downward, since the limiting rod 8 and the limiting plate 7 do not contact the root of the pin, the limiting plate 7 and the limiting rod 8 will not exert a downward pulling force on the pin when moving downward, preventing the pin from being separated from the diode 001, when the limiting plate 7 and the limiting rod 8 contact the bent part of the pin, the limiting plate 7 and the limiting rod 8 can push the bent part of the pin towards the pin axis, thereby straightening the automatic pin, after straightening, drive the lifting rod 4 to move upward through the first electric push rod 3 Reset, the lifting rod 4 can drive the limiting plate 7 and the limiting rod 8 to move upward and reset;Then, the drive motor 17 drives the rear threaded rod 16 to rotate. The rear threaded rod 16, through the transmission action of the pulley assembly 18, drives the front threaded rod 16 to rotate. The threaded rod 16 drives the mounting rod 9 to move downward along the third guide rod 15. The mounting rod 9 drives the horizontal plate 11 and the cutter 12 to move downward to a specified height. Then, the second electric push rod 13 drives the horizontal plate 11 and the cutter 12 to move closer to each other. With the cooperation of the horizontal plate 11, the cutter 12 can simultaneously cut the pins of each diode 001. After cutting, the second electric push rod 13 drives the horizontal plate 11 and the cutter 12 to move away from each other to reset. Then, the drive motor 17 drives the threaded rod 16 to reverse. The threaded rod 16 drives the mounting rod 9 to move upward to reset. The mounting rod 9 drives the horizontal plate 11 and the cutter 12 to move upward to reset. Then, the second lead screw motor 21 drives the positioning frame 20 to move along the fourth guide rod 15. The guide rod 19 moves upward, so that the positioning frame 20 no longer blocks the leftmost diode 001. Then, the next batch of diodes 001 can be conveyed one by one to the feeding plate 2 via the feeding conveyor. The next batch of diodes 001 will push the cut diodes 001 to the left to be conveyed to the discharge conveyor for discharge. After the next batch of diodes 001 has been conveyed to the feeding plate 2, the second lead screw motor 21 drives the positioning frame 20 to move downward and reset. The positioning frame 20 can separate the two batches of diodes 001 (that is, the leftmost diode 001 in the next batch of diodes 001 will contact the right side of the positioning frame 20, and the rightmost diode 001 in the cut batch of diodes 001 will be covered by the positioning frame 20). The positioning frame 20 can also position the next batch of diodes 001. By repeating the above operation, the leads of diodes 001 can be automatically straightened and cut in batches, improving the overall work efficiency and product quality.

[0033] like Figures 10-12 As shown, it also includes airbags 22 and control components. Multiple airbags 22 are connected from left to right at intervals on the upper front side of the rear limiting plate 7. The rear limiting plate 7 is provided with a control component for controlling the expansion or contraction of the airbags 22. The control component includes a hollow frame 23, a piston frame 24, a connecting tube 25, and a connecting spring 26. The inner wall of each square hole 701 on the rear limiting plate 7 is connected to a hollow frame 23. The hollow frame 23 corresponds one-to-one with the airbag 22. The piston frame 24 is slidably connected to the front side of the hollow frame 23. The piston frame 24 is "I" shaped. The top of the hollow frame 23 is connected to the rear end of its corresponding airbag 22 and is kept in communication with the connecting tube 25. A connecting spring 26 is wound around the middle of each piston frame 24, and the two ends of the connecting spring 26 are respectively connected to the hollow frame 23 and the piston frame 24.

[0034] When the two limiting plates 7 move to the side close to each other, the limiting plate 7 can drive the limiting plug rod 8 to gradually insert into the square hole 701 corresponding to it, at the same time, the rear limiting plate 7 can drive the air bag 22 to move forward, so that each air bag 22 is inserted between the roots of the two adjacent pins, when the front limiting plug rod 8 contacts the front side of the piston frame 24, the front limiting plug rod 8 will push the piston frame 24 to move backward, the connecting spring 26 is compressed, the piston frame 24 will extrude the air in the hollow frame 23, so that the air in the hollow frame 23 enters the air bag 22 through the connecting pipe 25, the air bag 22 expands, so that the air bag 22 can contact the root of the pin, at this time, the air bag 22 can support and fix the root of the pin, when the limiting plate 7 and the limiting plug rod 8 push and straighten the pin, the pushing force received by the pin can only be transmitted to the contact position of the pin and the air bag 22, so as to prevent the connecting part of the pin and the diode 001 from being subjected to the pushing force, thereby preventing the pin of the diode 001 from breaking off, when the two limiting plates 7 move to the side away from each other and reset, the limiting plate 7 can drive the limiting plug rod 8 to gradually separate from the square hole 701, at this time, the front limiting plug rod 8 will be separated from the piston frame 24, the connecting spring 26 returns to its original state, driving the piston frame 24 to move forward and reset, the piston frame 24 can suck the air in the air bag 22 back into the hollow frame 23, so that the air bag 22 shrinks and resets and separates from the pin, at the same time, the rear limiting plate 7 can drive the air bag 22 to move backward and reset.

[0035] As shown in Figure 1 It also includes a material guide inclined plate 27 and a collection frame 28, the bottom right side of each of the two discharge plates 2 is connected with the material guide inclined plate 27, the lower part of the rack 1 is connected with the collection frame 28, and the collection frame 28 is located directly below the discharge plate 2.

[0036] When the feeding conveyor conveys the diode 001 to the left to the discharge plate 2, the diode 001 will first contact the material guide inclined plate 27, and the pin of the diode 001 can be preliminarily straightened through the extrusion of the material guide inclined plate 27, so as to facilitate the secondary straightening of the pin of the diode 001 by the limiting plate 7 and the limiting plug rod 8; when the cutting knife 12 cuts the pin of the diode 001, the cut pin part will fall downward to the collection frame 28 due to gravity for unified collection.

Claims

1. A device for processing the pin of a diode, comprising a frame (1), characterized in that, It also includes: the discharge plate (2) is symmetrically connected to the rack (1), and one side of the discharge plate (2) is provided with an inclined surface (201); the first electric push rod (3) is symmetrically installed on the rack (1); the lifting rod (4) is connected to the telescopic rod of the first electric push rod (3); the first screw rod motor (5) is installed on the lifting rod (4); the first guide rod (6) is connected in the lifting rod (4); the limiting plate (7) is slidingly connected to the first guide rod (6), the side surface of the limiting plate (7) is uniformly spaced apart from the square hole (701), the limiting plate (7) is slidingly connected with the lifting rod (4), and the limiting plate (7) is threadedly connected with the screw rod of the first screw rod motor (5); the limiting plug rod (8) is symmetrically and spaced apart from the side surface of the limiting plate (7); the cutting assembly is arranged on the rack (1) and is used for cutting the pins of the diode (001); the limiting assembly is arranged on the discharge plate (2) and is used for limiting the diode (001) on the discharge plate (2); It also includes: the air bag (22) is uniformly and spaced apart from the side surface of one of the limiting plates (7); the control assembly is arranged in one of the limiting plates (7) and is used for controlling the air bag (22) to expand or shrink; The control assembly comprises: a hollow frame (23) connected to the square hole (701) on one side; a piston frame (24) slidingly connected to the hollow frame (23); a connecting pipe (25) having two ends connected to the hollow frame (23) and the air bag (22) and keeping communication; a connecting spring (26) having two ends connected to the hollow frame (23) and the piston frame (24).

2. An apparatus for trimming the legs of diodes as claimed in claim 1, characterized in that The cutting assembly comprises: a lifting mechanism arranged on the rack (1); the mounting rod (9) is symmetrically arranged on the lifting mechanism, and the lifting mechanism is used for driving the mounting rod (9) to lift; the second guide rod (10) is slidingly connected to the mounting rod (9); the cross plate (11) is connected to the end of one of the second guide rods (10); the cutter (12) is connected to the end of the other second guide rod (10); the second electric push rod (13) is installed on the side surface of the mounting rod (9), and the telescopic rod of the second electric push rod (13) is connected with the cross plate (11) and the cutter (12) respectively.

3. An apparatus for trimming the legs of diodes as defined in claim 2, characterized in that The lifting mechanism comprises: a U-shaped rod (14) symmetrically connected to the rack (1); a third guide rod (15) symmetrically connected to one of the U-shaped rods (14), and the third guide rod (15) is slidingly connected with the mounting rod (9); a threaded rod (16) is symmetrically and rotatably connected to the other U-shaped rod (14), and the threaded rod (16) is threadedly connected with the mounting rod (9); the drive motor (17) is installed on the rack (1), and the output shaft of the drive motor (17) is connected with the end of one of the threaded rods (16); the belt pulley assembly (18) is driven between the two threaded rods (16) through the belt pulley assembly (18).

4. An apparatus for trimming the legs of diodes as defined in claim 1, characterized in that The limiting assembly comprises a fourth guide rod (19) connected to one of the material discharging plates (2), a positioning frame (20) slidably connected to the fourth guide rod (19), and the positioning frame (20) is slidably connected to the material discharging plate (2), and a second screw rod motor (21) installed on the other material discharging plate (2), and the screw rod of the second screw rod motor (21) is threadedly connected with the positioning frame (20).

5. An apparatus for trimming the legs of diodes as defined in claim 1, wherein Further comprising a material guiding inclined plate (27) connected to the bottom of the material discharging plate (2).

6. An apparatus for trimming the legs of diodes as defined in claim 1, wherein Further comprising a collecting frame (28) connected to the rack (1), and the collecting frame (28) is located directly below the material discharging plate (2).

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