Lead frame surface mounting device equipment

Abstract

The invention provides lead frame surface mounting device equipment which comprises a lead frame distributed in a strip shape, the lead frame comprises a frame edge, positioning openings are symmetrically formed in the two sides of the frame edge, the lead frame surface mounting device further comprises mounting equipment, the mounting equipment comprises a continuous conveying assembly and a pickup assembly, the continuous conveying assembly comprises a supporting table, the lead frame is arranged on the supporting table, and the pickup assembly is arranged on the supporting table. Supporting legs are fixed to the bottom of the supporting table, first supporting frames are symmetrically fixed to the two sides of the supporting table, pushing blocks are symmetrically and slidably connected to the sides, close to each other, of the first supporting frames, and intermittent driving parts are arranged between the pushing blocks and the supporting table. According to the lead frame surface mounting device equipment provided by the invention, the intermittent driving part drives the push block to move in a reciprocating manner to be inserted into the positioning opening, and the positioning opening is pushed to drive the frame edge to move forwards, so that continuous feeding is realized, and the efficiency of an automatic production process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lead frames, and in particular to a lead frame surface mounting device. Background Art

[0002] Leadframe, also known as LeadFrame, Conductor frame (emphasizing the conductive function) or Pin frame (emphasizing the pin function), is a professional term in the field of electronic engineering and electronic packaging, referring to the metal frame used to support and connect the pins of electronic chips. It is the basic material for semiconductor packaging. In semiconductor packaging technology, the manufactured chip needs to be removed from the dicing film and placed on the leadframe or packaging substrate (substrate) at a set position for the next step of wire bonding or other interconnection processes. This step is actually a mounting technology, and the leadframe surface mount device equipment is one of the key equipment to realize this technology.

[0003] For example, a lead frame with publication number CN112768429A is used to package semiconductor devices, including an intermediate frame, a bottom frame, and a top frame. The first pin and the second pin are arranged on the intermediate frame, the third pin is arranged on the bottom frame, and the fourth pin is arranged on the top frame. The first pin and the second pin both have welding plates, and the welding plates are both provided with first bumps facing downwards. The third pin is provided with a support plate corresponding to the welding plate, and the chip is arranged between the upper surface of the support plate and the bottom surface of the first bump. The fourth pin is provided with a pressure plate corresponding to the welding plate, and the bottom of the pressure plate is provided with a second bump facing downwards corresponding to the first bump. The chip is arranged between the upper surface of the welding plate and the bottom surface of the second bump. The bottom frame, the intermediate frame and the top frame are overlapped and assembled from bottom to top, and the top frame, the intermediate frame and the bottom frame all have a plurality of rectangular cavities corresponding to the upper and lower parts, and a plurality of semiconductor device packaging areas are formed in an array along the length direction inside the rectangular cavity, which is convenient for packaging multi-chip semiconductor devices and has high production efficiency.

[0004] Based on the search of the above patents and combined with the devices in the prior art, it is found that the existing lead frame components are generally arranged in an array form. When mounting the chip, the component needs to be accurately placed on the positioning plate. Then, the grabbing robot arm will accurately grab the chip from the substrate and mount it steadily on the base island of the lead frame. Once a round of mounting is completed, the old lead frame component needs to be replaced with a new one for the next round of operation. This series of steps is quite complicated and time-consuming, which not only increases the difficulty of manual operation, but also limits the efficiency of the automated production process. Simplifying this operation process is of great significance to improving the overall production efficiency. Therefore, we have made improvements to this and proposed a lead frame surface mount device. Summary of the invention

[0005] The purpose of the present invention is to address the fact that the existing lead frame components are generally arranged in an array form. When mounting a chip, the component needs to be accurately placed on a positioning plate. Subsequently, a grabbing robot arm will accurately grab the chip from the substrate and mount it steadily on the base island of the lead frame. Once a round of mounting is completed, the old lead frame component needs to be replaced with a new one in order to proceed to the next round of operations. This series of steps is quite complicated and time-consuming, which not only increases the difficulty of manual operation, but also limits the efficiency of the automated production process.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following method in which an intermittent driving component drives the push block to move back and forth and inserts it into the interior of the positioning port, and drives the frame edge to move forward by pushing the positioning port, thereby realizing continuous feeding, which is beneficial to reduce the difficulty of manual operation, improve the efficiency of the automated production process, and improve the above-mentioned problems.

[0007] The specific application is as follows:

[0008] A lead frame surface mount device device comprises a lead frame distributed in a strip shape, the lead frame comprises a frame edge, a base island is arranged inside the frame edge, a plurality of groups of connecting pins are evenly fixed on the inner side of the frame edge, the base island is fixed to the frame edge by blank pins, positioning openings are symmetrically opened on both sides of the frame edge, and also comprises a mounting device, the mounting device comprises a continuous conveying component and a picking component, the continuous conveying component comprises a support table, the lead frame is arranged on the support table, a support leg is fixed at the bottom of the support table, first support frames are symmetrically fixed on both sides of the support table, a push block is symmetrically slidably connected to the side of the first support frame close to each other, and an intermittent driving component is arranged between the push block and the support table.

[0009] As a preferred technical solution of the present application, an anti-overflow groove is provided at the edge of the top of the base island.

[0010] As a preferred technical solution of the present application, the intermittent drive component includes a second support frame symmetrically fixed at one end of the support platform, the bottoms of the two second support frames are connected to a transmission rod for common rotation, a second spur gear is fixed to the surface of the transmission rod, a second single-head motor is fixed to the bottom of the support platform, a first spur gear is fixed to the output end of the second single-head motor, and the first spur gear is meshed with the second spur gear.

[0011] As a preferred technical solution of the present application, the two second support frames are symmetrically connected to the first single-head pulley and the second single-head pulley at both ends of the side away from each other, the second single-head pulley is fixed to the two ends of the transmission rod, the two second single-head pulleys are connected by a first toothed transmission belt, and the tops of the two second support frames are connected to the rocker at the tops of the side close to each other, and the rocker is fixed to the first single-head pulley.

[0012] As a preferred technical solution of the present application, a first adjusting rod is arranged between the two rocking arms, two ends of the first adjusting rod are respectively slidably connected to the inside of the rocking arm, connecting rings are symmetrically fixed to the two ends of the surface of the first adjusting rod, a rotating ring is rotatably connected to the surface of the connecting ring, a push rod is fixed to the outside of the rotating ring, one end of the push rod away from the rotating ring is rotatably connected to the first connecting plate, one end of the first connecting plate is fixed to a mounting shell, the push block is rotatably connected to the inside of the mounting shell, and a stroke adjustment component is arranged between the first adjusting rod and the rocking arm.

[0013] As a preferred technical solution of the present application, a slider is fixed to one side of the first connecting plate, a guide rail is fixed to the side where the two first supporting frames are close to each other, and the slider is slidably connected to the surface of the guide rail.

[0014] As a preferred technical solution of the present application, the bottom of the push block and the side close to the rotating ring are provided with rounded corners, a return spring is arranged between the top of the push block and the mounting shell, and a stop block is fixed on the side of the mounting shell away from the rotating ring and on the top of the push block.

[0015] As a preferred technical solution of the present application, the stroke adjustment component includes a first single-headed motor fixed on one side of the first adjusting rod, the two ends of the inner side of the first adjusting rod are symmetrically rotatably connected with nuts, a third single-headed pulley is fixed to the outer side of the nut, and a double-headed pulley is rotatably connected inside the first single-headed motor and located between the two nuts, the double-headed pulley is fixed to the output end of the first single-headed motor, the double-headed pulley and the two third single-headed pulleys are respectively connected by a second toothed transmission belt, a second threaded rod is fixed inside the rocker, and the second threaded rod is threadedly connected to the inside of the nut.

[0016] As a preferred technical solution of the present application, the top of the support platform is symmetrically slidably connected to the limit plate, and sliding holes are opened inside the support platform and at positions at both ends of the limit plate, and two second connecting plates are inherently provided at both ends of the limit plate, and the second connecting plate is slidably connected to the inside of the sliding hole, and the bottoms of the two second connecting plates are jointly fixed with a second adjusting rod, and the bottom of the support platform is symmetrically fixed with a fixing rod, the second adjusting rod is located between the two fixing rods, and a guide rod is symmetrically fixed between the two fixing rods, and the two ends of the second adjusting rod are slidably connected to the guide rod, and a double-headed motor is fixed to the bottom of the support platform, and two output ends of the double-headed motor are fixed with a first threaded rod, the threads of the two first threaded rods have opposite rotation directions, and the two first threaded rods are respectively threadedly connected to the second adjusting rod.

[0017] As a preferred technical solution of the present application, the picking assembly includes a support table fixed on one side of the support table, a third single-head motor is fixed to the bottom of the support table, an outer shell is fixed to the upper surface of the support table, the inner part of the outer shell is rotatably connected with a third spur gear and a fourth spur gear, the third spur gear is meshed with the fourth spur gear, the output end of the third single-head motor is fixed to the fourth spur gear, the top of the outer shell is rotatably connected with an electric telescopic seat, the electric telescopic seat is fixed to the third spur gear, a rocker arm is fixed to the top of the electric telescopic seat, a connecting shaft is fixed to the bottom of the rocker arm away from the electric telescopic seat, and a suction cup is provided at the bottom of the connecting shaft.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the scheme of this application:

[0020] 1. In order to solve the problem in the prior art that the grabbing robot arm will accurately grab the chip from the substrate and mount it steadily on the base island of the lead frame. Once a round of mounting is completed, the old lead frame assembly needs to be replaced with a new one for the next round of operation. This series of steps is quite complicated and time-consuming, which not only increases the difficulty of manual operation, but also limits the efficiency of the automated production process. The present application drives the push block to move back and forth through the intermittent drive component set up, and inserts it into the interior of the positioning port. By pushing the positioning port, the frame edge is driven forward to achieve continuous feeding, which is conducive to reducing the difficulty of manual operation and improving the efficiency of the automated production process;

[0021] 2. The double-headed pulley is driven to rotate by the rotation of the first single-head motor, and the double-headed pulley drives the third single-headed pulley and the nut to rotate through the second toothed transmission belt. When the nut rotates, it is threadedly connected with the second threaded rod, thereby driving the first adjusting rod to move along the axial direction of the second threaded rod. By adjusting the distance between the first adjusting rod and the first single-headed pulley, the movement stroke of the push block can be adjusted, which is beneficial to increase the use effect of the equipment and solves the problem that the feeding stroke is not easy to adjust in the prior art;

[0022] 3. The first threaded rod is driven to rotate by the rotation of the double-headed motor, and the first threaded rod drives the second adjusting rod to move closer or farther away from each other when rotating, thereby adjusting the distance between the two limit plates, so that the device can adapt to lead frames of different widths, further increasing the use effect of the device, and solving the problem that the prior art is not easy to adapt to lead frames of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the lead frame provided for this application;

[0024] Figure 2A schematic diagram of the structure of the mounting equipment provided for this application;

[0025] Figure 3 A schematic diagram of the bottom structure of the support platform provided in this application;

[0026] Figure 4 A schematic diagram of the internal structure of the joystick provided for this application;

[0027] Figure 5 A schematic diagram of the partial structure of the stroke adjustment component provided in this application;

[0028] Figure 6 A schematic diagram of the partial structure of the intermittent drive component provided in this application;

[0029] Figure 7 Provided for this application Figure 6 A schematic diagram of a local enlarged structure;

[0030] Figure 8 A schematic diagram of the internal structure of the installation shell provided for this application;

[0031] Fig. 9 A schematic diagram of the structure of the pickup assembly provided in this application.

[0032] Indicated in the figure:

[0033] 1. Frame edge; 2. Positioning opening; 3. Base island; 4. Anti-overflow groove; 5. Connecting pin; 6. First support platform; 7. First support frame; 8. Press roller; 9. Stopper; 10. First single-head pulley; 11. First toothed transmission belt; 12. Second single-head pulley; 13. Guide rail; 14. Second support frame; 15. Push rod; 16. Rocker; 17. First single-head motor; 18. First adjustment rod; 19. Support leg; 20. Fixed rod; 21. Guide rod; 22. Second adjustment rod; 23. First threaded rod; 24. Double-head motor; 25. Slide hole; 26. Second single-head motor; 27. First straight gear; 2 8. Second spur gear; 29. ​​Transmission rod; 30. Second threaded rod; 31. Nut; 32. Third single-head pulley; 33. Second toothed transmission belt; 34. Double-head pulley; 35. First connecting plate; 36. Slider; 37. Mounting shell; 38. Push block; 39. Connecting ring; 40. Rotating ring; 41. Return spring; 42. Third single-head motor; 43. Third spur gear; 44. Fourth spur gear; 45. Outer shell; 46. Electric telescopic seat; 47. Rocker arm; 48. Connecting shaft; 49. Suction cup; 50. Blank pin; 51. Limiting plate; 52. Second connecting plate; 53. Second support platform. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 described embodiments 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 should fall within the scope of protection of the present invention.

[0035] As described in the background technology, existing lead frame components are generally arranged in an array. When mounting the chip, the component needs to be accurately placed on the positioning plate. Subsequently, the grabbing robot will accurately grab the chip from the substrate and mount it steadily on the base island of the lead frame. Once a round of mounting is completed, the old lead frame component needs to be replaced with a new one for the next round of operation. This series of steps is quite complicated and time-consuming, which not only increases the difficulty of manual operation, but also limits the efficiency of the automated production process.

[0036] In order to solve this technical problem, the present invention provides a lead frame surface mounting device, which is applied to lead frame surface mounting.

[0037] Example 1

[0038] Please refer to Figure 1-9 ,

[0039] The invention comprises a lead frame distributed in a strip-like manner. During production, a plurality of lead frames are connected end to end into a whole to form a strip-like lead frame assembly, which is convenient for continuous feeding during mounting. The lead frame comprises a frame edge 1, a base island 3 is arranged inside the frame edge 1, the surface of the base island 3 is used for mounting chips, a plurality of groups of connecting pins 5 are evenly distributed and fixed on the inner side of the frame edge 1, the base island 3 and the frame edge 1 are fixed by blank pins 50, positioning openings 2 are symmetrically provided on both sides of the frame edge 1, and the positioning openings 2 are used for positioning the frame edge 1. The invention also comprises mounting equipment, which comprises a continuous conveying assembly and a picking assembly, the picking assembly is used for grabbing the chip on the substrate, and the continuous conveying assembly is used for transporting the lead frame to a specified position, the picking assembly comprises a support table 53 fixed on one side of the support table 6, a third single-head motor 42 is fixed to the bottom of the support table 53, an outer shell 45 is fixed to the upper surface of the support table 53, and an outer The third spur gear 43 and the fourth spur gear 44 are rotatably connected inside the shell 45, the third spur gear 43 meshes with the fourth spur gear 44, the output end of the third single-head motor 42 is fixed to the fourth spur gear 44, the top of the outer shell 45 is rotatably connected to an electric telescopic seat 46, the electric telescopic seat 46 is fixed to the third spur gear 43, a rocker arm 47 is fixed to the top of the electric telescopic seat 46, a connecting shaft 48 is fixed to the bottom of the end of the rocker arm 47 away from the electric telescopic seat 46, and a suction cup 49 is provided at the bottom of the connecting shaft 48. Specifically, the fourth spur gear 44 is driven to rotate by the third single-head motor 42, and the third spur gear 43 is driven to rotate by the engagement of the fourth spur gear 44 with the third spur gear 43, thereby driving the suction cup 49 to rotate to the top of the substrate, and the electric telescopic seat 46 is used to drive the suction cup 49 to move up and down, so as to grab the chip on the substrate and mount it on the base island 3;

[0040] A pressure roller 8 is symmetrically rotatably connected between the two first support frames 7, and the surface of the pressure roller 8 is made of rubber;

[0041] The continuous conveying assembly includes a support platform 6, the lead frame is arranged on the support platform 6, a support leg 19 is fixed to the bottom of the support platform 6, first support frames 7 are symmetrically fixed to both sides of the support platform 6, and a push block 38 is symmetrically slidably connected to the side of the first support frame 7 close to each other, and an intermittent driving component is arranged between the push block 38 and the support platform 6. Specifically, the push block 38 is inserted into the interior of the positioning port 2 when driven to move back and forth by the intermittent driving component, and the frame edge 1 is driven to move forward by pushing the positioning port 2, thereby realizing continuous feeding, which is conducive to reducing the difficulty of manual operation and improving the efficiency of the automated production process;

[0042] An anti-overflow groove 4 is provided at the edge of the top of the base island 3. When mounting the chip, excess glue can flow into the anti-overflow groove 4, which reduces glue overflow and helps improve the quality of packaging.

[0043] The intermittent drive component includes a second support frame 14 symmetrically fixed at one end of the support platform 6, the bottoms of the two second support frames 14 are connected to a transmission rod 29 for common rotation, a second spur gear 28 is fixed to the surface of the transmission rod 29, a second single-head motor 26 is fixed to the bottom of the support platform 6, a first spur gear 27 is fixed to the output end of the second single-head motor 26, and the first spur gear 27 is meshed with the second spur gear 28. Specifically, the first spur gear 27 is driven to rotate by the rotation of the second single-head motor 26, and the first spur gear 27 drives the second spur gear 28 to rotate when rotating, and the transmission rod 29 is driven to rotate by the second spur gear 28;

[0044] The two ends of the side on which the two second support frames 14 are far away from each other are symmetrically connected to the first single-head pulley 10 and the second single-head pulley 12 for rotation, respectively. The second single-head pulley 12 is fixed to the two ends of the transmission rod 29, and the two second single-head pulleys 12 are connected for transmission via the first toothed transmission belt 11. The tops of the two second support frames 14 that are close to each other are connected for rotation with a rocker 16, and the rocker 16 is fixed to the first single-head pulley 10. Specifically, the transmission rod 29 drives the second single-head pulley 12 to rotate when it rotates, and the second single-head pulley 12 drives the first single-head pulley 10 to rotate via the first toothed transmission belt 11, and drives the rocker 16 to rotate via the first single-head pulley 10;

[0045] A first adjusting rod 18 is provided between the two rocking arms 16, and two ends of the first adjusting rod 18 are respectively slidably connected to the inside of the rocking arms 16, and two ends of the surface of the first adjusting rod 18 are symmetrically fixed with connecting rings 39, and the surface of the connecting ring 39 is rotatably connected with a rotating ring 40, and a push rod 15 is fixed to the outside of the rotating ring 40, and the end of the push rod 15 away from the rotating ring 40 is rotatably connected to the first connecting plate 35, and one end of the first connecting plate 35 is fixed with a mounting shell 37, and the push block 38 is rotatably connected to the inside of the mounting shell 37, and a stroke adjustment component is provided between the first adjusting rod 18 and the rocking arm 16, and the stroke adjustment component is used to adjust the movement stroke of the push block 38, so that the device can adapt to different types of lead frames, specifically, the rocking arm 16 drives the first adjusting rod 18 to rotate when it rotates, and the first adjusting rod 18 pushes the push rod 15 to move through the connecting ring 39 and the rotating ring 40 when it rotates, and the push rod 15 drives the push block 38 to reciprocate through the first connecting plate 35 and the mounting shell 37;

[0046] A slider 36 is fixed to one side of the first connecting plate 35, and a guide rail 13 is fixed to the side where the two first support frames 7 are close to each other. The slider 36 is slidably connected to the surface of the guide rail 13. Specifically, the slider 36 is slidably connected to the surface of the guide rail 13 to guide and limit the first connecting plate 35, the mounting shell 37 and the push block 38, thereby improving the stability of the equipment operation;

[0047] A rounded corner is provided at the bottom of the push block 38 and on the side close to the rotating ring 40. The rounded corner is provided to facilitate the push block 38 to disengage from the inside of the positioning port 2 when moving backward. A return spring 41 is provided between the top of the push block 38 and the mounting shell 37. A stopper 9 is fixed on the side of the mounting shell 37 away from the rotating ring 40 and on the top of the push block 38. Specifically, when the push block 38 pushes the positioning port 2 forward, the stopper 9 is used to limit the push block 38, and the return spring 41 is used to drive the push block 38 to reset, thereby improving the stability of the equipment operation.

[0048] Example 2

[0049] The lead frame surface mount device device provided in Example 1 is further optimized, specifically, as follows: Figure 2-5 As shown,

[0050] The stroke adjustment component includes a first single-head motor 17 fixed to one side of the first adjustment rod 18, and the two ends of the inner side of the first adjustment rod 18 are symmetrically rotatably connected with nuts 31, and the outer side of the nut 31 is fixed with a third single-head pulley 32, and the inside of the first single-head motor 17 and the position between the two nuts 31 is rotatably connected with a double-head pulley 34, and the double-head pulley 34 is fixed to the output end of the first single-head motor 17, and the double-head pulley 34 and the two third single-head pulleys 32 are respectively connected by a second toothed transmission belt 33, and the inside of the rocker 16 is fixed with a second threaded rod 30, and the second threaded rod 30 is fixed to the inside of the rocker 16. The rod 30 is threadedly connected to the inside of the nut 31. Specifically, the double-headed pulley 34 is driven to rotate by the first single-headed motor 17. The double-headed pulley 34 drives the third single-headed pulley 32 and the nut 31 to rotate through the second toothed transmission belt 33. When the nut 31 rotates, it is threadedly connected with the second threaded rod 30, thereby driving the first adjusting rod 18 to move along the axial direction of the second threaded rod 30. By adjusting the distance between the first adjusting rod 18 and the first single-headed pulley 10, the movement stroke of the push block 38 is adjusted, which is conducive to increasing the practicality of the equipment.

[0051] Example 3

[0052] The lead frame surface mount device device provided in Example 1 is further optimized, specifically, as follows: Figure 2-3 As shown,

[0053] The top of the support platform 6 is symmetrically slidably connected to the limit plate 51, and the limit plate 51 is used to limit the two sides of the lead frame, which is beneficial to improving the feeding accuracy. Slide holes 25 are opened inside the support platform 6 and at the two ends of the limit plate 51. The two ends of the limit plate 51 have inherent second connecting plates 52, and the second connecting plates 52 are slidably connected to the inside of the slide hole 25. The bottom of the two second connecting plates 52 is commonly fixed with a second adjusting rod 22. The bottom of the support platform 6 is symmetrically fixed with a fixing rod 20. The second adjusting rod 22 is located between the two fixing rods 20. A guide rod 21 is symmetrically fixed between the two fixing rods 20. The two ends of the second adjusting rod 22 are fixed to The guide rod 21 is slidably connected, and is used to guide and limit the limit plate 51. A double-headed motor 24 is fixed to the bottom of the support table 6, and the two output ends of the double-headed motor 24 are fixed with a first threaded rod 23. The threads of the two first threaded rods 23 are in opposite directions, and the two first threaded rods 23 are respectively threadedly connected to the second adjusting rod 22. Specifically, the first threaded rod 23 is driven to rotate by the rotation of the double-headed motor 24, and the first threaded rod 23 drives the second adjusting rod 22 to move closer to or away from each other when rotating, thereby adjusting the spacing between the two limit plates 51, so that the device can adapt to lead frames of different widths, further increasing the practicality of the device.

[0054] The use process of a lead frame surface mount device provided by the present invention is as follows:

[0055] Technical principle: The fourth spur gear 44 is driven to rotate by the third single-head motor 42, and the third spur gear 43 is driven to rotate by the engagement of the fourth spur gear 44 with the third spur gear 43, thereby driving the suction cup 49 to rotate to the top of the substrate, and the electric telescopic seat 46 is used to drive the suction cup 49 to move up and down, so as to grab the chip on the substrate and mount it on the base island 3, and the first spur gear 27 is driven to rotate by the second single-head motor 26, and the first spur gear 27 drives the second spur gear 28 to rotate when rotating, and the second spur gear The wheel 28 drives the transmission rod 29 to rotate, and the transmission rod 29 drives the second single-head pulley 12 to rotate when rotating. The second single-head pulley 12 drives the first single-head pulley 10 to rotate through the first toothed transmission belt 11, and the first single-head pulley 10 drives the rocker 16 to rotate. The rocker 16 drives the first adjustment rod 18 to rotate when rotating. When the first adjustment rod 18 rotates, it pushes the push rod 15 to move through the connecting ring 39 and the rotating ring 40. The push rod 15 drives the push block 38 to reciprocate through the first connecting plate 35 and the mounting shell 37. The push block 38 is disengaged from the interior of the positioning port 2 when it moves backward, and is inserted into the interior of the positioning port 2 when the push block 38 pushes the positioning port 2 forward, and drives the frame edge 1 to move forward by pushing the positioning port 2, thereby realizing continuous feeding, and the push block 38 is limited by the stopper 9, and the reset spring 41 is used to drive the push block 38 to reset, and the double-headed pulley 34 is driven to rotate by the first single-head motor 17, and the double-headed pulley 34 drives the third single-headed pulley 32 and the nut 31 to rotate through the second toothed transmission belt 33, and the nut 31 is driven to rotate. When rotating, it is threadedly connected with the second threaded rod 30, thereby driving the first adjusting rod 18 to move along the axial direction of the second threaded rod 30, and by adjusting the distance between the first adjusting rod 18 and the first single-head pulley 10, the movement stroke of the push block 38 is adjusted. The first threaded rod 23 is driven to rotate by the double-headed motor 24. When the first threaded rod 23 rotates, it drives the second adjusting rod 22 to move closer to or away from each other, thereby adjusting the spacing between the two limit plates 51, so that the device can adapt to lead frames of different widths.

[0056] The present invention provides a lead frame surface mount device device, which drives a push block to move back and forth through an intermittent driving component and is inserted into the interior of a positioning port, and drives the frame edge to move forward by pushing the positioning port, thereby realizing continuous feeding, which is beneficial to reducing the difficulty of manual operation and improving the efficiency of the automated production process.

[0057] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0058] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A lead frame surface mount device, characterized in that: The lead frame comprises a lead frame distributed in a strip shape, the lead frame comprises a frame edge (1), a base island (3) is arranged inside the frame edge (1), a plurality of groups of connecting pins (5) are evenly distributed and fixed on the inner side of the frame edge (1), the base island (3) and the frame edge (1) are fixed by blank pins (50), and positioning openings (2) are symmetrically provided on both sides of the frame edge (1); Also included is a placement device, the placement device including a continuous conveying component and a picking component; The continuous conveying component comprises a support platform (6), the lead frame is arranged on the support platform (6), a support leg (19) is fixed to the bottom of the support platform (6), a first support frame (7) is symmetrically fixed to both sides of the support platform (6), a push block (38) is symmetrically slidably connected to the side of the first support frame (7) that is close to each other, and an intermittent driving component is arranged between the push block (38) and the support platform (6).

2. A lead frame surface mount device device according to claim 1, characterized in that: An anti-overflow groove (4) is provided at the edge of the top of the base island (3).

3. A lead frame surface mount device device according to claim 1, characterized in that: The intermittent driving component comprises a second support frame (14) symmetrically fixed at one end of the support platform (6); the bottoms of the two second support frames (14) are connected to a transmission rod (29) for common rotation; a second spur gear (28) is fixed to the surface of the transmission rod (29); a second single-head motor (26) is fixed to the bottom of the support platform (6); a first spur gear (27) is fixed to the output end of the second single-head motor (26); and the first spur gear (27) is meshed with the second spur gear (28).

4. A lead frame surface mount device device according to claim 3, characterized in that: The two second support frames (14) are symmetrically rotatably connected to the first single-head pulley (10) and the second single-head pulley (12) at two ends of a side away from each other, the second single-head pulley (12) is fixed to the two ends of a transmission rod (29), the two second single-head pulleys (12) are connected to each other through a first toothed transmission belt (11), and the tops of the two second support frames (14) are rotatably connected to the rocker (16), and the rocker (16) is fixed to the first single-head pulley (10).

5. A lead frame surface mount device device according to claim 4, characterized in that: A first adjusting rod (18) is arranged between the two rocking arms (16), and the two ends of the first adjusting rod (18) are respectively slidably connected to the inside of the rocking arm (16), and connecting rings (39) are symmetrically fixed at the two ends of the surface of the first adjusting rod (18), and the surface of the connecting ring (39) is rotatably connected to a rotating ring (40), and a push rod (15) is fixed to the outer side of the rotating ring (40), and the end of the push rod (15) away from the rotating ring (40) is rotatably connected to a first connecting plate (35), and one end of the first connecting plate (35) is fixed to a mounting shell (37), and the push block (38) is rotatably connected to the inside of the mounting shell (37), and a stroke adjustment component is arranged between the first adjusting rod (18) and the rocking arm (16).

6. A lead frame surface mount device device according to claim 5, characterized in that: A slider (36) is fixed to one side of the first connecting plate (35), a guide rail (13) is fixed to the side where the two first supporting frames (7) are close to each other, and the slider (36) is slidably connected to the surface of the guide rail (13).

7. A lead frame surface mount device device according to claim 6, characterized in that: A rounded corner is provided at the bottom of the push block (38) and at a side close to the rotating ring (40); a return spring (41) is provided between the top of the push block (38) and the mounting shell (37); and a stopper (9) is fixed at a side of the mounting shell (37) away from the rotating ring (40) and at the top of the push block (38).

8. A lead frame surface mount device device according to claim 7, characterized in that: The stroke adjustment component comprises a first single-head motor (17) fixed on one side of a first adjustment rod (18); two ends of the inner side of the first adjustment rod (18) are symmetrically rotatably connected with nuts (31); a third single-head pulley (32) is fixed on the outer side of the nut (31); a double-head pulley (34) is rotatably connected inside the first single-head motor (17) and located between the two nuts (31); the double-head pulley (34) is fixed to the output end of the first single-head motor (17); the double-head pulley (34) and the two third single-head pulleys (32) are respectively connected in transmission via a second toothed transmission belt (33); a second threaded rod (30) is fixed inside the rocker (16); the second threaded rod (30) is threadedly connected inside the nut (31).

9. A lead frame surface mount device device according to claim 1, characterized in that: The top of the support platform (6) is symmetrically slidably connected to the limit plate (51); a sliding hole (25) is provided inside the support platform (6) and at the positions at both ends of the limit plate (51); a second connecting plate (52) is inherently provided at both ends of the limit plate (51); the second connecting plate (52) is slidably connected inside the sliding hole (25); a second adjusting rod (22) is commonly fixed at the bottom of the two second connecting plates (52); a fixing rod (20) is symmetrically fixed at the bottom of the support platform (6); the second adjusting rod (22) is located between the two fixed rods (20), a guide rod (21) is symmetrically fixed between the two fixed rods (20), both ends of the second adjusting rod (22) are slidably connected to the guide rod (21), a double-headed motor (24) is fixed to the bottom of the support platform (6), and the two output ends of the double-headed motor (24) are fixed with a first threaded rod (23), the thread rotation directions of the two first threaded rods (23) are opposite, and the two first threaded rods (23) are respectively threadedly connected to the second adjusting rod (22).

10. A lead frame surface mount device device according to claim 1, characterized in that: The picking assembly comprises a support platform (53) fixed on one side of the support platform (6); a third single-head motor (42) is fixed at the bottom of the support platform (53); an outer shell (45) is fixed on the upper surface of the support platform (53); a third spur gear (43) and a fourth spur gear (44) are rotatably connected inside the outer shell (45); the third spur gear (43) is meshed with the fourth spur gear (44); an output end of the third single-head motor (42) is fixed to the fourth spur gear (44); the top of the outer shell (45) is rotatably connected to an electric telescopic seat (46); the electric telescopic seat (46) is fixed to the third spur gear (43); a rocker arm (47) is fixed at the top of the electric telescopic seat (46); a connecting shaft (48) is fixed at the bottom of one end of the rocker arm (47) away from the electric telescopic seat (46); a suction cup (49) is provided at the bottom of the connecting shaft (48).

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