A deformable step lead frame conveying device

Abstract

The present invention relates to the technical field of lead frame processing equipment, and specifically to a deformable step lead frame conveying device, comprising a guide plate, two guide plates are arranged in parallel, a lead frame passes between the two guide plates, a plurality of abutting mechanisms are arranged on the guide plate, the abutting mechanisms include a plurality of adjusting screws, the adjusting screws are rotatably connected to the guide plate, one end of a plurality of elastic sheets is fixedly connected to the guide plate by the adjusting screws, an abutting joint is fixedly connected to one end of the elastic sheet close to the lead frame, the abutting joint abuts against both sides of the lead frame, and a guiding mechanism is arranged at both ends of the guide plate. The present invention utilizes the abutting joint and the elastic sheet to prevent the two sides of the lead frame from contacting and colliding with the inner side of the guide plate when the lead frame moves, and at the same time, when the lead frame swings left and right, the elastic sheet will drive the abutting joint to give way adaptively to prevent the lead frame from hard contact and deformation, and after the elastic sheet drives the abutting joint to give way adaptively, it will drive the abutting joint to reset again to correct the progressive route of the lead frame.

Description

Technical Field

[0001] The invention relates to the technical field of lead frame processing equipment, in particular to a deformable step lead frame conveying device. Background Art

[0002] Lead frame refers to a thin metal frame used to connect the contact points of the chip inside the semiconductor integrated circuit and the external wires.

[0003] The lead frame is a key component that connects the internal circuit and the external lead in semiconductor packaging. The accuracy and efficiency of its processing and conveying process directly affect the stability of the entire packaging process and product quality. The conveyed lead frame is generally conveyed by rollers on both sides or clamped and pulled during processing and conveying. During clamped and pulled conveying, the lead frame will contact and collide with the inner walls of the guide grooves on both sides, which can easily cause damage to both sides of the lead frame. At the same time, during clamped and pulled conveying, the lead frame will swing left and right, causing the left and right sides of the lead frame to contact the inner walls of the guide grooves, which can easily cause overall deformation of the lead frame.

[0004] In view of this, the present invention proposes a deformable step lead frame conveying device to solve the above technical problems. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] A deformable step lead frame conveying device comprises a guide plate, wherein two guide plates are arranged in parallel, a lead frame passes between the two guide plates, a plurality of clamping mechanisms are arranged on the guide plate, and the clamping mechanisms include a plurality of adjusting screws, the adjusting screws are rotatably connected to the guide plate, one end of a plurality of elastic sheets is fixedly connected to the guide plate by the adjusting screws, an end of the elastic sheet close to the lead frame is fixedly connected with an abutment joint, the abutment joint abuts against two sides of the lead frame, and guiding mechanisms are arranged at both ends of the guide plate.

[0007] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, the guiding mechanism includes a protective shell, the middle part of the guide plate is fixedly connected to the protective shell, both ends of the protective shell are fixedly connected to guide rods, the guide rods are located above the guide plate, both sides of the guide rods are fixedly connected to racks, the racks are meshed with gears, a motor is arranged below the gears, the gears and the output shafts of the motors are fixedly connected, a moving box is arranged below the motor, the lower end of the motor is fixedly connected in the moving box, and a rotating clamping structure is arranged on the end of the moving box close to the protective shell.

[0008] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, the rotating clamping structure includes a pneumatic clamp, and the pneumatic clamp is fixedly connected to the side wall of the moving box close to the protective shell. The pneumatic clamp has two upper and lower clamping rulers, and the opposite surfaces of the two clamping rulers are fixedly connected to a No. 1 spring rod, and a rubber pad is provided at the end of the No. 1 spring rod.

[0009] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, the end of the first spring rod is rotatably connected to the rubber pad via a bearing.

[0010] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, a clamping mechanism is arranged in the protective shell, and the clamping mechanism includes an electric telescopic rod, and the electric telescopic rod is fixedly connected to the upper end surface of the protective shell, and the output end of the electric telescopic rod extends to the interior of the protective shell, and a No. 2 spring rod is arranged inside the protective shell, and the No. 2 spring rod is fixedly connected to the output end of the electric telescopic rod, and the lower end surface of the No. 2 spring rod is fixedly connected to a pressing plate, and a matching plate is arranged below the pressing plate, and a lead frame is pressed between the pressing plate and the matching plate.

[0011] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, an opening for welding operation is opened in the middle of the pressing plate, and a plurality of pressing feet are fixedly connected to the inner wall of the opening, and the pressing feet abut against the lead frame.

[0012] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, a welding unit is arranged above the opening, and the welding unit is fixedly connected to the upper wall of the protective shell.

[0013] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, an anti-oxidation mechanism is arranged on the welding unit, and the anti-oxidation mechanism includes a mounting plate, and the mounting plate is fixedly connected to the outer wall of the welding unit, and the lower end surface of the mounting plate is fixedly connected to a corrugated square tube, and the upper end surface of the mounting plate is fixedly connected to an air intake pipe, and the upper end of the air intake pipe extends out of the protective shell and is fixedly connected and communicated with the nitrogen pipe.

[0014] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, a sealing plate is provided on one side of the opening, and the sealing plate is fixedly connected to the lower end surface of the pressure plate, and the sealing plate is abutted against the matching plate, and a plurality of air outlet holes are provided on the matching plate below the opening, and an air collecting cavity is provided inside the matching plate, and the air outlet holes are connected to the air collecting cavity, and an exhaust duct is connected to one side of the air collecting cavity, and the exhaust duct is connected to the insulation chamber, and the insulation chamber is provided inside the insulation plate, and the insulation plate is located below the guide plate.

[0015] As a preferred solution of the deformable step lead frame conveying device provided by the present invention, a preheating plate is arranged under the head of the guide plate, and one end of the preheating plate extends into the interior of the protective shell.

[0016] Beneficial effects of the present invention:

[0017] (1) In the present invention, the temperature of the preheating plate is increased by using a heating wire disposed inside the preheating plate. When the lead frame passes through the upper end surface of the preheating plate, the preheating plate can preheat the lead frame, thereby improving the subsequent welding effect.

[0018] (2) In the present invention, the abutment head and the elastic sheet are used to prevent the two sides of the lead frame from contacting and colliding with the inner side of the guide plate when the lead frame moves, thereby preventing the lead frame from being damaged. At the same time, when the lead frame is delivered, the lead frame will have a slight swing to the left and right, which may easily cause the lead frame to contact the inner side of the fixed guide plate, resulting in deformation of the lead frame. When the abutment head is used to contact the lead frame, when the lead frame swings left and right, the elastic sheet will drive the abutment head to adaptively give way, thereby preventing the lead frame from being deformed by hard contact. At the same time, the elastic sheet has resilience. After the elastic sheet drives the abutment head to adaptively give way, it will drive the abutment head to reset again, thereby correcting the progressive route of the lead frame.

[0019] (3) In the present invention, the pneumatic clamp utilizes a No. 1 spring rod and a rubber pad to contact the lead frame, thereby preventing the pneumatic clamp and the lead frame from being in hard contact and causing damage to the lead frame. At the same time, the rubber pad rotates relative to the pneumatic clamp, so that the pneumatic clamp can offset the left and right swing of the lead frame when delivering the lead frame, and can cooperate with the tightening mechanism.

[0020] (4) In the present invention, the opening is covered with a corrugated square tube, so that a relatively sealed environment is formed in the welding area of ​​the opening, which can isolate external oxygen during welding, slow down the oxidation of the lead frame, and improve the welding quality.

[0021] (5) In the present invention, nitrogen is filled into the corrugated square tube and the opening through the nitrogen pipe, and the welding area is filled with nitrogen, which further prevents the lead frame from being oxidized during welding. At the same time, high-temperature gas is generated during welding. Because of the filling of nitrogen, the high-temperature gas will be squeezed into the outlet hole and finally enter the insulation chamber and then discharged. The high-temperature gas can increase the temperature of the insulation plate, and the lead frame after welding will pass through the insulation plate. Through heat transfer, the temperature of the lead frame after welding will not drop rapidly, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0023] in:

[0024] Figure 1 It is a schematic diagram of the overall structure of a deformable step lead frame conveying device;

[0025] Figure 2 It is a schematic diagram of the internal connection structure of the protective shell;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0027] Figure 4 It is a schematic diagram of the connection structure of the corrugated square tube, the pressing plate and the protective shell;

[0028] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0029] Figure 6 It is a schematic diagram of the connection structure of the clamping mechanism;

[0030] Figure 7 for Figure 6 A magnified schematic diagram of the structure at C in the middle;

[0031] Figure 8 It is a schematic diagram of the connection structure of the anti-oxidation mechanism;

[0032] Fig. 9 for Figure 8A magnified schematic diagram of the structure at D in the middle;

[0033] Fig.10 It is a schematic diagram of the connection structure of the anti-oxidation mechanism and the pressing mechanism;

[0034] Fig.11 It is a schematic diagram of the connection structure between the anti-oxidation mechanism and the matching plate;

[0035] Fig.12 for Fig.11 The enlarged schematic diagram of the structure at E in the middle;

[0036] In the figure:

[0037] 1. Guide plate;

[0038] 2. Tightening mechanism; 21. Elastic sheet; 22. Adjusting screw; 23. Butt joint;

[0039] 3. Guide mechanism; 32. Protective shell; 31. Moving box; 33. Motor; 34. Gear; 35. Guide rod; 36. Rack; 37. Rotating clamping structure; 371. Pneumatic clamp; 374. No. 1 spring rod; 375. Bearing; 376. Rubber pad;

[0040] 4. Clamping mechanism; 42. Electric telescopic rod; 43. No. 2 spring rod; 44. Pressing plate; 45. Opening; 46. Presser foot; 47. Matching plate;

[0041] 5. Welding unit;

[0042] 6. Anti-oxidation mechanism; 61. Corrugated square tube; 62. Mounting plate; 63. Air inlet pipe; 64. Nitrogen pipe; 65. Air outlet; 66. Gas collecting cavity; 67. Exhaust duct; 68. Insulation chamber; 69. Insulation board; 610. Sealing board;

[0043] 7. Preheating plate. DETAILED DESCRIPTION

[0044] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Example

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, a deformable step lead frame conveying device, wherein the guiding mechanism 3 includes a protective shell 32, the middle part of the guide plate 1 is fixedly connected with the protective shell 32, both ends of the protective shell 32 are fixedly connected with guide rods 35, the guide rods 35 are located above the guide plate 1, racks 36 are fixedly connected to both sides of the guide rods 35, a gear 34 is meshed on the rack 36, a motor 33 is arranged below the gear 34, the gear 34 and the output shaft of the motor 33 are fixedly connected, a moving box 31 is arranged below the motor 33, the lower end of the motor 33 is fixedly connected in the moving box 31, and a rotating clamping structure 37 is arranged on one end of the moving box 31 close to the protective shell 32;

[0047] The two guide plates 1 are arranged in parallel, a lead frame passes between the two guide plates 1, a plurality of abutting mechanisms 2 are arranged on the guide plate 1, the abutting mechanisms 2 include a plurality of adjusting screws 22, the adjusting screws 22 are rotatably connected to the guide plate 1, one end of a plurality of elastic sheets 21 is fixedly connected to the guide plate 1 by the adjusting screws 22, an abutting head 23 is fixedly connected to one end of the elastic sheet 21 close to the lead frame, the abutting head 23 abuts against two sides of the lead frame, and a guiding mechanism 3 is arranged at both ends of the guide plate 1;

[0048] The rotating clamping structure 37 includes a pneumatic clamp 371, which is fixedly connected to the side wall of the moving box 31 close to the protective shell 32. The pneumatic clamp 371 has two upper and lower clamping scales, and the opposite surfaces of the two clamping scales are fixedly connected to a No. 1 spring rod 374. A rubber pad 376 is provided at the end of the No. 1 spring rod 374.

[0049] The end of the first spring rod 374 is rotatably connected to the rubber pad 376 via a bearing 375 .

[0050] In the embodiment, there are two guide plates 1 and they are symmetrically distributed. A preheating plate 7, a matching plate 47 and a heat preservation plate 69 are arranged between the two guide plates 1 in sequence. The lead frame passes through the two guide plates 1 and passes through the upper end surfaces of the preheating plate 7, the matching plate 47 and the heat preservation plate 69 in sequence. The pneumatic clamp 371 is used to clamp one end of the lead frame, and then the other end of the lead frame is extended into the protective shell 32. Then the motor 33 is started to drive the gear 34 to rotate. The gear 34 and the rack 36 cooperate to drive the moving box 31 and the pneumatic clamp 371 and the lead frame to move intermittently in the guide groove formed by the two guide plates 1. The number of revolutions of the motor 33 each time can be set to control the progressive length of the lead frame each time. The guide mechanism 3 at the other end of the guide plate 1 can clamp the other end of the lead frame and pull the lead frame gap. It should be noted that the guide mechanisms 3 at both ends cooperate with each other. When one end of the lead frame is clamped, the pneumatic clamp 371 at the other end is released.

[0051] It should be noted that the abutment 23 arranged on the inner side of the guide plate 1 can abut against both sides of the lead frame to ensure that the lead frame can be maintained in the middle of the two guide plates 1. When the lead frame moves, the two sides will not contact and collide with the inner side of the guide plate 1 to prevent the lead frame from being damaged. At the same time, when the guide mechanism 3 pulls or delivers the lead frame, the lead frame will have a slight left-right swing, which can easily cause the lead frame to contact the inner side of the fixed guide plate 1, causing the lead frame to deform. The abutment 23 is used to contact the lead frame, and the abutment 23 is installed on the inner side of the guide plate 1 using the elastic sheet 21. At this time, when the lead frame swings left and right, the elastic sheet 21 will drive the abutment 23 to give way adaptively to prevent the lead frame from being deformed by hard contact. At the same time, the elastic sheet 21 has resilience. After the elastic sheet 21 drives the abutment 23 to give way adaptively, it will drive the abutment 23 to reset again to correct the progressive route of the lead frame.

[0052] It should also be noted that the pneumatic clamp 371 utilizes a No. 1 spring rod 374 and a rubber pad 376 to contact the lead frame to prevent the pneumatic clamp 371 from making hard contact with the lead frame and causing damage to the lead frame. At the same time, the rubber pad 376 can rotate relative to the pneumatic clamp 371, so that the pneumatic clamp 371 can offset the left and right swing of the lead frame when delivering the lead frame, and can cooperate with the clamping mechanism 2.

[0053] like Figure 2 As shown, a preheating plate 7 is provided below the head of the guide plate 1 , and one end of the preheating plate 7 extends into the interior of the protective shell 32 .

[0054] In the embodiment, a heating wire is disposed inside the preheating plate 7 . When the lead frame passes through the upper end surface of the preheating plate 7 , the preheating plate 7 can preheat the lead frame to improve the subsequent welding effect.

[0055] like Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 As shown, a clamping mechanism 4 is provided in the protective shell 32, and the clamping mechanism 4 includes an electric telescopic rod 42, and the upper end surface of the protective shell 32 is fixedly connected to the electric telescopic rod 42, and the output end of the electric telescopic rod 42 extends to the inside of the protective shell 32, and a No. 2 spring rod 43 is provided inside the protective shell 32, and the No. 2 spring rod 43 is fixedly connected to the output end of the electric telescopic rod 42, and the lower end surface of the No. 2 spring rod 43 is fixedly connected to a pressing plate 44, and a matching plate 47 is provided below the pressing plate 44, and a lead frame is pressed between the pressing plate 44 and the matching plate 47;

[0056] An opening 45 for welding is provided in the middle of the pressing plate 44, and a plurality of pressing feet 46 are fixedly connected to the inner wall of the opening 45, and the pressing feet 46 abut against the lead frame;

[0057] A welding unit 5 is disposed above the opening 45 , and the welding unit 5 is fixedly connected to the upper wall of the protective shell 32 .

[0058] In the embodiment, the electric telescopic rod 42 is extended to drive the second spring rod 43 and the pressure plate 44 to press the lead frame onto the matching plate 47, wherein the pressure foot 46 further fixes the part of the lead frame that needs to be welded, and then the welding unit 5 moves down into the opening 45 to start the welding process on the lead frame.

[0059] It should be noted that the progressive length of the lead frame each time is controlled by controlling the number of revolutions of the motor 33, which is consistent with the length of the area of ​​the lead frame that needs to be processed in the opening 45, and the frequency at which the electric telescopic rod 42 drives the pressing plate 44 to press the lead frame should be consistent with the progressive frequency of the lead frame.

[0060] like Figure 4-Figure 12 As shown, the welding unit 5 is provided with an anti-oxidation mechanism 6, and the anti-oxidation mechanism 6 includes a mounting plate 62, and the mounting plate 62 is fixedly connected to the outer wall of the welding unit 5, and the lower end surface of the mounting plate 62 is fixedly connected to a corrugated square tube 61, and the upper end surface of the mounting plate 62 is fixedly connected to an air intake pipe 63, and the upper end of the air intake pipe 63 extends out of the protective shell 32 and is fixedly connected and communicated with a nitrogen pipe 64;

[0061] A sealing plate 610 is provided on one side of the opening 45, and the sealing plate 610 is fixedly connected to the lower end surface of the pressure plate 44. The sealing plate 610 abuts against the matching plate 47. A plurality of air outlet holes 65 are provided on the matching plate 47 below the opening 45. An air collecting cavity 66 is provided inside the matching plate 47. The air outlet holes 65 are connected to the air collecting cavity 66. An exhaust duct 67 is connected to one side of the air collecting cavity 66. The exhaust duct 67 is connected to an insulation chamber 68. The insulation chamber 68 is provided inside an insulation plate 69, and the insulation plate 69 is located below the guide plate 1.

[0062] In the embodiment, when the welding unit 5 moves downward for welding, the welding unit 5 drives the mounting plate 62 and the corrugated square tube 61 to move downward, and then the corrugated square tube 61 contacts the upper end surface of the pressing plate 44 and covers the opening 45. At the same time, when the pressing plate 44 presses down the lead frame, the sealing plate 610 also blocks the front and rear areas below the opening 45. At this time, a relatively sealed environment is formed in the welding area of ​​the opening 45, which can slow down the oxidation of the lead frame during welding and improve the welding quality. At the same time, during welding, the nitrogen pipe 64 will fill the nitrogen into the corrugated square tube 6 through the inlet pipe 63. 1 and the opening 45, the welding area is filled with nitrogen to further prevent the lead frame from being oxidized during welding. At the same time, high-temperature gas is generated during welding. Because of the filling of nitrogen, the high-temperature gas is squeezed into the outlet hole 65, and then enters the gas collecting cavity 66, and then passes through the exhaust duct 67 into the insulation chamber 68 in the insulation plate 69, and then is discharged. The high-temperature gas can increase the temperature of the insulation plate 69, and the lead frame after welding will pass through the insulation plate 69. Through heat transfer, the temperature of the lead frame after welding will not drop rapidly, thereby improving the welding quality.

[0063] The workflow is as follows:

[0064] First, use the pneumatic clamp 371 to clamp one end of the lead frame, and then extend the other end of the lead frame into the protective shell 32, then start the motor 33 to drive the gear 34 to rotate, and drive the lead frame to move intermittently in the guide groove formed by the two guide plates 1. The number of revolutions of the motor 33 each time can be set to control the progressive length of the lead frame each time. The pneumatic clamp 371 uses a No. 1 spring rod 374 and a rubber pad 376 to contact the lead frame to prevent the pneumatic clamp 371 from hard contact with the lead frame and causing damage to the lead frame. At the same time, the rubber pad 376 can rotate relative to the pneumatic clamp 371, so that the pneumatic clamp 371 can offset the left and right swing of the lead frame when delivering the lead frame. At the same time, when the lead frame is moving, the abutment 23 provided on the inner side of the guide plate 1 can abut against the two sides of the lead frame, ensuring that the lead frame can be kept in the middle of the two guide plates 1, so that the two sides of the lead frame will not contact and collide with the inner side of the guide plate 1 when the lead frame moves, preventing the lead frame from being damaged. At the same time, when the lead frame is delivered, the elastic sheet 21 will drive the abutment 23 to give way adaptively, preventing the lead frame from being deformed by hard contact. At the same time, the elastic sheet 21 has resilience. After the elastic sheet 21 drives the abutment 23 to give way adaptively, it will drive the abutment 23 to reset again, correcting the progressive route of the lead frame. The lead frame preheated by the preheating plate 7 enters the welding area. At this time, the electric telescopic rod 42 extends to drive the second spring rod 43 and the pressure plate 44 to press the lead frame on the matching plate 47, wherein the pressure foot 46 further fixes the part of the lead frame that needs to be welded, and then the welding unit 5 moves down into the opening 45 to start welding the lead frame. When the welding unit 5 moves downward for welding, the welding unit 5 drives the mounting plate 62 to contact the upper end surface of the corrugated square tube 61 and the pressing plate 44, and covers the opening 45. A relatively sealed environment is formed in the welding area of ​​the opening 45, which can isolate external oxygen during welding to slow down the oxidation of the lead frame and improve the welding quality. At the same time, during welding, the nitrogen pipe 64 will fill nitrogen into the corrugated square tube 61 and the opening 45 through the air inlet pipe 63, and fill the welding area with nitrogen to further prevent the lead frame from welding oxidation. At the same time, high-temperature gas will be generated during welding. Because of the filling of nitrogen, the high-temperature gas will be squeezed into the outlet hole 65, and finally stay in the insulation room 68 and then discharged. The high-temperature gas can increase the temperature of the insulation board 69, and the lead frame after welding will pass through the insulation board 69. Through heat transfer, the temperature of the lead frame after welding will not drop rapidly, thereby improving the welding quality.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A deformable step lead frame conveying device, comprising a guide plate (1), wherein two guide plates (1) are arranged in parallel, and a lead frame passes between the two guide plates (1), characterized in that: The guide plate (1) is provided with a plurality of abutting mechanisms (2), the abutting mechanisms (2) comprising a plurality of adjusting screws (22), the adjusting screws (22) being rotatably connected to the guide plate (1), one end of a plurality of elastic sheets (21) being fixedly connected to the guide plate (1) by the adjusting screws (22), an abutting head (23) being fixedly connected to one end of the elastic sheet (21) close to the lead frame, the abutting head (23) abutting against two sides of the lead frame, and guiding mechanisms (3) being provided at both ends of the guide plate (1); The guide mechanism (3) comprises a protective shell (32), the middle part of the guide plate (1) is fixedly connected to the protective shell (32), both ends of the protective shell (32) are fixedly connected to guide rods (35), the guide rods (35) are located above the guide plate (1), racks (36) are fixedly connected to both sides of the guide rods (35), a gear (34) is meshed on the rack (36), a motor (33) is arranged below the gear (34), the gear (34) and the output shaft of the motor (33) are fixedly connected, a moving box (31) is arranged below the motor (33), the lower end of the motor (33) is fixedly connected inside the moving box (31), and a rotating clamping structure (37) is arranged on one end of the moving box (31) close to the protective shell (32).

2. The deformable step lead frame conveying device as claimed in claim 1, characterized in that: The rotating clamping structure (37) comprises a pneumatic clamp (371), the pneumatic clamp (371) being fixedly connected to a side wall of the moving box (31) close to the protective shell (32), the pneumatic clamp (371) having two upper and lower clamping rulers, the opposite surfaces of the two clamping rulers being fixedly connected to a No. 1 spring rod (374), the end of the No. 1 spring rod (374) being provided with a rubber pad (376).

3. The deformable step lead frame conveying device as claimed in claim 2, characterized in that: The end of the first spring rod (374) is rotatably connected to the rubber pad (376) via a bearing (375).

4. The deformable step lead frame conveying device as claimed in claim 3, characterized in that: A clamping mechanism (4) is arranged inside the protective shell (32), the clamping mechanism (4) comprising an electric telescopic rod (42), the upper end surface of the protective shell (32) being fixedly connected to the electric telescopic rod (42), the output end of the electric telescopic rod (42) extending into the interior of the protective shell (32), a No. 2 spring rod (43) being arranged inside the protective shell (32), the No. 2 spring rod (43) being fixedly connected to the output end of the electric telescopic rod (42), a pressing plate (44) being fixedly connected to the lower end surface of the No. 2 spring rod (43), a matching plate (47) being arranged below the pressing plate (44), and a lead frame being pressed between the pressing plate (44) and the matching plate (47).

5. The deformable step lead frame conveying device as claimed in claim 4, characterized in that: An opening (45) for welding operations is provided in the middle of the pressing plate (44), and a plurality of pressing feet (46) are fixedly connected to the inner wall of the opening (45), and the pressing feet (46) abut against the lead frame.

6. The deformable step lead frame conveying device as claimed in claim 5, characterized in that: A welding unit (5) is provided above the opening (45), and the welding unit (5) is fixedly connected to the upper wall of the protective shell (32).

7. The deformable step lead frame conveying device as claimed in claim 6, characterized in that: The welding unit (5) is provided with an anti-oxidation mechanism (6), the anti-oxidation mechanism (6) comprising a mounting plate (62), the mounting plate (62) being fixedly connected to the outer wall of the welding unit (5), the lower end surface of the mounting plate (62) being fixedly connected to a corrugated square tube (61), the upper end surface of the mounting plate (62) being fixedly connected to an air intake pipe (63), the upper end of the air intake pipe (63) extending out of the protective shell (32) being fixedly connected to and in communication with a nitrogen pipe (64).

8. The deformable step lead frame conveying device as claimed in claim 7, characterized in that: A sealing plate (610) is provided on one side of the opening (45), and the sealing plate (610) is fixedly connected to the lower end surface of the pressing plate (44). The sealing plate (610) and the matching plate (47) are in abutment with each other. A plurality of air outlet holes (65) are provided on the matching plate (47) below the opening (45), and an air collecting chamber (66) is provided inside the matching plate (47). The air outlet holes (65) and the air collecting chamber (66) are connected, and an exhaust duct (67) is connected on one side of the air collecting chamber (66). The exhaust duct (67) and the heat preservation chamber (68) are connected, and the heat preservation chamber (68) is provided inside the heat preservation plate (69). The heat preservation plate (69) is located below the guide plate (1).

9. The deformable step lead frame conveying device as claimed in claim 8, characterized in that: A preheating plate (7) is provided below the head of the guide plate (1), and one end of the preheating plate (7) extends into the interior of the protective shell (32).

Images