Semiconductor field effect transistor packaging structure with positioning function

Abstract

The invention is suitable for the technical field of electronic component packaging, and provides a semiconductor field effect transistor packaging structure with a positioning function, which comprises a conveying frame for conveying a circuit board; a packaging frame is arranged above the conveying frame; the packaging frame comprises conveying tables which are symmetrically arranged; side plates are fixed to the side faces of the conveying table. Supporting sleeves are symmetrically fixed to the tops of the side plates. A plurality of bearing parts are slidably arranged at the top of the conveying table; equidistant parts are connected between the bearing parts; the equidistant part comprises a plurality of rotating rings rotationally matched with the annular groove; and a connecting rope is connected between the adjacent rotating rings. According to the device, all sets of field-effect tubes are conveyed to the bearing parts which are attracted and attached to each other, all sets of bearing parts are controlled to be mutually excluded and away from each other, all sets of connecting ropes of the equidistant part are tensioned, and rapid equidistant distribution of all sets of field-effect tubes is achieved; therefore, the groups of equidistantly distributed field effect transistors are synchronously pressed and attached to the circuit board, the process is optimized, and the packaging efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component packaging, and more specifically, to a semiconductor field effect transistor packaging structure with a positioning function. Background Art

[0002] Field effect transistor is abbreviated as field effect tube. There are two main types: junction field effect transistor and metal oxide semiconductor field effect transistor. Most carriers participate in the conduction, also known as unipolar transistor, which is a voltage-controlled semiconductor device.

[0003] When packaging field effect tubes, they are distinguished by the way they are installed on the circuit board. There are two major types of field effect tube packaging: insertion type and surface mount type. The insertion type means that the pins of the field effect tube pass through the mounting holes of the circuit board and are soldered to the circuit board; the surface mount type means that the pins of the field effect tube and the heat dissipation flange are directly soldered to the pads on the surface of the circuit board.

[0004] In the prior art, most of the welding and packaging devices for field effect tubes and circuit boards use a clamping device to press a single field effect tube tightly against a corresponding position on the circuit board, and use a welding head to weld and package the arranged field effect tubes. After each welding and packaging of a group of field effect tubes is completed, the next group of field effect tubes is clamped by the clamping device and adjusted to the relative welding position again. Multiple repeated positioning is required, the process is cumbersome, and the packaging efficiency of the field effect tubes is reduced. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a semiconductor field effect transistor packaging structure with a positioning function, by conveying each group of field effect transistors to a bearing portion that attracts and fits each other, and by controlling each group of bearing portions to repel and move away from each other, so that each group of connecting ropes of the equidistant portion is tightened, the rapid and equidistant distribution of each group of field effect transistors to be welded and packaged is achieved, and through the linkage and coordination between the various components, the each group of equidistantly distributed field effect transistors are synchronously pressed and fitted to the corresponding positions of the circuit board, thereby optimizing the process and improving the packaging efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A semiconductor field effect transistor packaging structure with a positioning function, comprising a conveying frame for conveying circuit boards; a packaging frame is arranged above the conveying frame; the packaging frame comprises a symmetrically arranged conveying platform; side plates are fixed to the sides of the conveying platform; a supporting sleeve is symmetrically fixed to the top of the side plate; a plurality of bearing parts are slidably arranged on the top of the conveying platform; a field effect transistor is adsorbed on the top of the bearing part; an equidistant part is connected between each of the bearing parts; the bearing part comprises an L-shaped slide with a hollow interior; an exhaust pipe is connected to the bottom of the L-shaped slide, and adsorption holes are opened on the top and sides; an annular groove is opened on the outer peripheral side of the exhaust pipe; the equidistant part comprises a plurality of swivels that rotate with the annular groove; adjacent A connecting rope is connected between the swivels; a first U-shaped groove and a second U-shaped groove are symmetrically provided on the top of the L-shaped slide; first electromagnets connected in series are fixed at both ends of the first U-shaped groove; second electromagnets and third electromagnets connected in series are respectively fixed at both ends of the second U-shaped groove; the first electromagnets have the same magnetic properties; the second electromagnets and the third electromagnets have opposite magnetic properties; a lifting part is slidably arranged between the support sleeves; a clamping part for clamping a field effect transistor is symmetrically slidably arranged on the lifting part; an L-shaped support plate is fixed on the side of the conveying platform; a support platform is fixed on the side of the L-shaped support plate; a controller and a six-axis robotic arm are sequentially installed on the surface of the support platform; a welding head is fixedly installed on the output end of the six-axis robotic arm.

[0008] The present invention is further configured as follows: a slide groove that slides with the exhaust pipe is provided on the top of the conveying platform, and guide grooves are symmetrically provided on both sides of the slide groove at the top; guide rails that interact with the guide grooves are symmetrically fixed on the bottom surface of the L-shaped slide; each of the exhaust pipes is connected to the exhaust end of the external vacuum pump through a hose; the output end of the controller is electrically connected to the first electromagnet, the second electromagnet, the third electromagnet, the six-axis robot and the external vacuum pump respectively; each of the first electromagnets is electrically connected in series in sequence; each of the second electromagnets and the third electromagnets is electrically connected in series in an alternating manner in sequence; screw holes are provided on the side of the L-shaped slide; a number of positioning holes are evenly provided on the side of the side panel; fastening screws that are plug-matched with the corresponding positioning holes are screwed in the screw holes; and support legs are fixed to the bottom surfaces of both conveying platforms.

[0009] The present invention is further configured as follows: a first belt roller is symmetrically fixed between the conveying frames; a first belt is transmitted between the two first belt rollers; a first motor electrically connected to an output end of a controller is fixedly mounted on the conveying frame; the output end of the first motor is fixedly connected to one end of the first belt roller; an ear plate is fixed to the bottom surface of the L-shaped support plate; a second motor electrically connected to the output end of the controller is fixed to the side of one of the ear plates; a first bidirectional screw is fixedly and rotatably arranged between the two ear plates; the output end of the second motor is fixedly connected to one end of the first bidirectional screw; an L-shaped slide plate slidably arranged on the side of the side plate and cooperating with the thread of the first bidirectional screw for rotation; a push plate is fixed to the side of the L-shaped slide plate; and the circuit board is slidably arranged between the two push plates.

[0010] The present invention is further configured as follows: a baffle is fixed at the end of the side plate; a second belt roller is symmetrically and rotatably arranged between the two baffles; a second belt is symmetrically and transmitted between the two second belt rollers; a third motor electrically connected to the output end of the controller is fixed to the side of one of the baffles; the output end of the third motor is fixedly connected to the end of the second belt roller; a baffle bar is fixed to the side of the outermost L-shaped slide away from the baffle; an L-shaped limit plate is slidably arranged through the side of the push plate; a first electric push rod electrically connected to the output end of the controller is fixed to the side of the push plate; the telescopic end of the first electric push rod is fixedly connected to the L-shaped limit plate.

[0011] The present invention is further configured as follows: the lifting part includes symmetrically arranged U-shaped plates; a connecting plate is symmetrically fixed between the two U-shaped plates; the U-shaped plates are symmetrically fixed with lifting rods that slide with corresponding supporting sleeves; a supporting spring is fixed between the bottom end of the lifting rod and the inner bottom surface of the supporting sleeve.

[0012] The present invention is further configured as follows: a second bidirectional screw is rotatably arranged between the inner walls of one U-shaped plate; a guide rod is fixed between the inner walls of the other U-shaped plate; a fourth motor is installed on the side of the U-shaped plate; the output end of the fourth motor is fixedly connected to one end of the second bidirectional screw; the clamping part includes a positioning plate; a plurality of mounting holes are evenly opened on the surface of the positioning plate; a sliding sleeve and a threaded sleeve are fixed on the surface of the positioning plate in sequence; the sliding sleeve is slidably matched with the guide rod; the threaded sleeve is threadedly matched with the second bidirectional screw; a plurality of positioning frames are evenly installed on the bottom surface of the positioning plate; the positioning frame includes a top plate; bolts that are plug-matched with the mounting holes are symmetrically fixed on the top of the top plate; and fastening nuts are threaded on the bolts.

[0013] The present invention is further configured as follows: a fixed frame is symmetrically fixed to the bottom surface of the top plate; guide rails are symmetrically fixed to the inner walls of the fixed frame; a vertical plate is symmetrically fixed to the bottom surface of the top plate between the two fixed frames; an L-shaped guide plate is fixed to the bottom of the vertical plate; a horizontal plate is fixed between the two L-shaped guide plates; an avoidance groove is formed between the two vertical plates and the L-shaped guide plate; a lifting frame is slidably arranged between the inner walls of the fixed frame; lifting grooves that slide with the guide rails are symmetrically opened on two opposite sides of the lifting frame; a clamping member is slidably arranged inside the lifting frame; the clamping member includes an L-shaped lifting plate slidably arranged between the inner walls of the fixed frame; a ball head matching the L-shaped guide plate is fixed to the end of the L-shaped lifting plate; a reset spring mounted on the L-shaped lifting plate is fixed between the ball head and the lifting frame; and a clamping plate is fixed to the bottom end of the L-shaped lifting plate.

[0014] The present invention is further configured as follows: a pressing piece is slidably arranged in the avoidance groove; the pressing piece includes a pressing plate symmetrically slidably arranged in the corresponding avoidance groove; connecting springs are symmetrically fixed on both sides of the lower pressing plate at the top of the lifting frame; the top of the connecting spring is fixed on the top of the fixed frame; a fixing plate is symmetrically fixed between the two lower pressing plates; an ear seat is fixed on the side of the fixing plate; an extension seat is fixed on the side of the U-shaped plate; a second electric push rod electrically connected to the output end of the controller is fixed on the surface of the extension seat; the telescopic end of the second electric push rod is fixedly connected to the extension seat.

[0015] The present invention is further configured as follows: a mounting plate is fixed on the top of the L-shaped support plate; a third bidirectional screw is rotatably arranged between the two mounting plates; a limiting rod is fixed between the two mounting plates; a sliding plate symmetrically slidingly arranged on the limiting rod and cooperating with the third bidirectional screw thread for rotation; cross guide plates are symmetrically fixed at both ends of the sliding plate; an inclined guide plate is arranged at the end of the cross guide plate tilted downward; support rods are fixed on the tops of the sliding sleeve and the threaded sleeve; guide balls compatible with the cross guide plate and the inclined guide plate are fixed on the top of the support rod.

[0016] The advantages of the present invention are:

[0017] 1. The present invention conveys each group of field effect tubes to the bearing parts that attract and fit each other through the second belt, and controls each group of bearing parts to repel and move away from each other, so that each group of connecting ropes of the equidistant part is tightened, thereby realizing the rapid equidistant distribution of each group of field effect tubes to be welded and packaged. Through the linkage and coordination between the various components, each group of equidistantly distributed field effect tubes are synchronously pressed and fitted to the corresponding positions of the circuit board, thereby optimizing the process and improving the packaging efficiency.

[0018] 2. The present invention adjusts the length of the connecting rope and the distance between adjacent top plates to achieve equal-distance adjustment of the lengths of each group of field effect tubes, and achieves equal-distance adjustment of different welding positions, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a semiconductor field effect transistor packaging structure with a positioning function according to the present invention.

[0020] Figure 2 For the present invention Figure 1 A magnified image of area A.

[0021] Figure 3 For the present invention Figure 1 A magnified view of area B.

[0022] Figure 4 For the present invention Figure 1 Schematic diagram of the structure from a frontal perspective.

[0023] Figure 5 It is a structural schematic diagram of the conveying rack, packaging rack and lifting unit assembly of the present invention.

[0024] Figure 6 For the present invention Figure 5 Magnified view of area C.

[0025] Figure 7 It is a schematic diagram of the structure of the field effect tube of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the bearing part of the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the bearing part of the present invention from another angle.

[0028] Fig.10 It is a structural schematic diagram of the equidistant portion of the present invention.

[0029] Fig.11 It is a schematic structural diagram of the clamping portion of the present invention.

[0030] Fig.12 It is a schematic structural diagram of the clamping member of the present invention.

[0031] Fig.13 It is a structural schematic diagram of the pressing member of the present invention.

[0032] Fig.14 It is a schematic diagram of the structure of the field transistors of the present invention before being arranged equidistantly.

[0033] Fig.15 It is a schematic diagram of the structure after the field transistors of the present invention are arranged equidistantly.

[0034] In the figure: 1, conveying rack; 2, packaging rack; 3, conveying platform; 4, side plate; 5, supporting sleeve; 6, bearing part; 7, equidistant part; 8, L-shaped slide; 9, exhaust pipe; 10, adsorption hole; 11, annular groove; 12, swivel; 13, connecting rope; 14, first U-shaped groove; 15, second U-shaped groove; 16, first electromagnet; 17, second electromagnet; 18, third electromagnet; 19, clamping part; 20, L-shaped support plate; 21, Support platform; 22, controller; 23, slide; 24, guide groove; 25, guide rail; 26, positioning hole; 27, fastening screw; 28, first belt roller; 29, first belt; 30, first motor; 31, ear plate; 32, second motor; 33, first bidirectional screw; 34, L-shaped slide plate; 35, push plate; 36, baffle; 37, second belt roller; 38, second belt; 39, third motor; 40, L-shaped limit plate; 41. First electric push rod; 42. U-shaped plate; 43. Connecting plate; 44. Lifting rod; 45. Second bidirectional screw rod; 46. Guide rod; 47. Positioning plate; 48. Sliding sleeve; 49. Screw sleeve; 50. Top plate; 51. Bolt; 52. Fastening nut; 53. Fixing frame; 54. Guide rail; 55. Vertical plate; 56. L-shaped guide plate; 57. Horizontal plate; 58. Avoidance groove; 59. Lifting frame; 60. Clamping piece; 61. L-shaped lifting Drop plate; 62, ball head; 63, return spring; 64, splint; 65, pressure piece; 66, pressure plate; 67, fixing plate; 68, ear seat; 69, extension seat; 70, second electric push rod; 71, mounting plate; 72, third bidirectional screw rod; 73, limit rod; 74, sliding plate; 75, horizontal guide plate; 76, inclined guide plate; 77, support rod; 78, guide ball; 79, mounting hole; 80, fourth motor; 81, connecting spring. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0037] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0038] For example, see Figure 1-15, the present invention provides the following technical solutions:

[0039] A semiconductor field effect transistor packaging structure with a positioning function, specifically, comprises a conveying frame 1 for conveying a circuit board; a packaging frame 2 is arranged above the conveying frame 1; the packaging frame 2 comprises a symmetrically arranged conveying platform 3; a side plate 4 is fixed to the side of the conveying platform 3; a supporting sleeve 5 is symmetrically fixed to the top of the side plate 4; a plurality of bearing parts 6 are slidably arranged on the top of the conveying platform 3; a field effect transistor is adsorbed on the top of the bearing part 6; an equidistant part 7 is connected between each bearing part 6; the bearing part 6 comprises an L-shaped slide 8 with a hollow interior; an exhaust pipe 9 is connected to the bottom of the L-shaped slide 8, and the top and Adsorption holes 10 are provided on the sides; an annular groove 11 is provided on the outer peripheral side of the exhaust pipe 9; the equidistant portion 7 includes a plurality of rotating rings 12 that rotate with the annular grooves 11; a connecting rope 13 is connected between adjacent rotating rings 12; a first U-shaped groove 14 and a second U-shaped groove 15 are symmetrically provided on the top of the L-shaped slide 8; first electromagnets 16 connected in series are fixed at both ends of the first U-shaped groove 14; second electromagnets 17 and third electromagnets 18 connected in series are fixed at both ends of the second U-shaped groove 15; the first electromagnets 16 have the same magnetic properties; the second electromagnet 17 and the third electromagnet 18 have opposite magnetic properties; A lifting part is slidably arranged between each supporting sleeve 5; a clamping part 19 for clamping a field effect transistor is symmetrically slidably arranged on the lifting part; an L-shaped support plate 20 is fixed on the side of the conveying platform 3; a support platform 21 is fixed on the side of the L-shaped support plate 20; a controller 22 and a six-axis robot arm are sequentially installed on the surface of the support platform 21; a welding head is fixedly installed on the output end of the six-axis robot arm; a slide groove 23 that slidably cooperates with the exhaust pipe 9 is opened on the top of the conveying platform 3, and guide grooves 24 are symmetrically opened on both sides of the slide groove 23 at the top; guide rails that interact and cooperate with the guide groove 24 are symmetrically fixed on the bottom surface of the L-shaped slide 8 25; each exhaust pipe 9 is connected to the exhaust end of the external vacuum pump through a hose; the output end of the controller 22 is electrically connected to the first electromagnet 16, the second electromagnet 17, the third electromagnet 18, the six-axis robot and the external vacuum pump respectively; the first electromagnets 16 are electrically connected in series in sequence; the second electromagnets 17 and the third electromagnets 18 are electrically connected in series in sequence; screw holes are provided on the side of the L-shaped slide 8; a number of positioning holes 26 are evenly provided on the side of the side plate 4; fastening screws 27 that are plugged into the corresponding positioning holes 26 are screwed in the screw holes; support legs are fixed to the bottom surfaces of the two conveyor platforms 3.

[0040] Working principle of the first embodiment:

[0041] According to the corresponding welding position, the fastening bolt 27 is screwed into the screw hole on the bearing part 6 closest to the second belt 38 to fix the corresponding bearing part 6 at the corresponding position of the conveying platform 3. The remaining bearing parts 6 can slide freely on the conveying platform 3.

[0042] In the initial state, the second electromagnet 17 and the third electromagnet 18 in each group of the load-bearing parts 6 are energized synchronously, and the third electromagnet 18 at one end of the load-bearing part 6 is close to the second electromagnet 17 at the end of the adjacent load-bearing part 6. After being energized, the adjacent third electromagnet 18 and second electromagnet 17 attract each other and approach each other, so that each group of the load-bearing parts 6 attracts and fits together, and each group of connecting ropes 13 is in a relaxed state.

[0043] By sending each group of field effect transistors to be welded and packaged one by one onto the L-shaped slide 8 that attract and fit each other, a baffle is provided on the side of the L-shaped slide 8 farthest from the second belt 38 to prevent the sliding of the field effect transistors. When each group of field effect transistors is placed on the surface of the corresponding L-shaped slide 8, the external vacuum pump is controlled to start and the field effect transistors are adsorbed and fixed on the corresponding L-shaped slide 8 through the adsorption holes 10.

[0044] By controlling the second electromagnets 17 and the third electromagnets 18 in each group of the carrying parts 6 to be de-energized synchronously, and controlling the first electromagnets 16 in each group of the carrying parts 6 to be energized synchronously, the first electromagnets 16 at the ends of adjacent carrying parts 6 repel each other, so that the groups of carrying parts 6 and the corresponding adsorbed and fixed field effect transistors move away from each other until the connecting ropes 13 of each group are tightened, thereby realizing the rapid and equidistant distribution of the field effect transistors in each group, facilitating the rapid and equidistant clamping and conveying of the subsequent clamping part 19, pressing the positioned field effect transistors in each group to fit the corresponding welding and packaging positions on the circuit board, and welding and packaging the positioned field effect transistors one by one by controlling the six-axis robot arm to cooperate with the welding head, instead of the traditional one-by-one clamping and positioning method, thereby optimizing the process and improving the packaging efficiency.

[0045] For example 2, please refer to Figure 1-15 , the second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a first belt roller 28 is symmetrically fixed between the conveying frames 1; a first belt 29 is arranged for transmission between the two first belt rollers 28; a first motor 30 electrically connected to the output end of the controller 22 is fixedly installed on the conveying frame 1; the output end of the first motor 30 is fixedly connected to one end of the first belt roller 28; an ear plate 31 is fixed to the bottom surface of the L-shaped support plate 20; a second motor 32 electrically connected to the output end of the controller 22 is fixed on the side of an ear plate 31; a first bidirectional screw rod 33 is fixedly and rotatably arranged between the two ear plates 31; the output end of the second motor 32 is fixedly connected to one end of the first bidirectional screw rod 33; an L-shaped slide plate 34 is slidably arranged on the side of the side plate 4 and is threadably matched with the first bidirectional screw rod 33; a push plate 35 is fixed on the side of the L-shaped slide plate 34; and the circuit board is slidably arranged between the two push plates 35.

[0046] A baffle 36 is fixed to the end of the side plate 4; a second belt roller 37 is symmetrically and rotatably arranged between the two baffles 36; a second belt 38 is symmetrically and transmitted between the two second belt rollers 37; a third motor 39 electrically connected to the output end of the controller 22 is fixed to the side of one baffle 36; the output end of the third motor 39 is fixedly connected to the end of the second belt roller 37; a baffle bar is fixed to the side of the outermost L-shaped slide 8 away from the baffle 36; an L-shaped limit plate 40 is slidably arranged through the side of the push plate 35; a first electric push rod 41 electrically connected to the output end of the controller 22 is fixed to the side of the push plate 35; the telescopic end of the first electric push rod 41 is fixedly connected to the L-shaped limit plate 40.

[0047] Working principle of the second embodiment:

[0048] By controlling and starting the second motor 32 to drive the first bidirectional screw 33 to rotate, the two L-shaped slide plates 34 are driven to slide synchronously along the corresponding side plates 4, so as to adjust the distance between the two push plates 35 and realize the guided transportation of circuit boards of different widths on the first belt 29.

[0049] In the initial state, the two L-shaped limit plates 40 block the circuit board on the first belt 29. The first pressure sensor is installed on the side of the L-shaped limit plate 40. When the circuit board is conveyed to the side of the L-shaped limit plate 40, the first pressure sensor is pressed, and the first pressure sensor transmits a signal to the controller 22. The controller 22 controls the second motor 32 to stop, and the first belt 29 stops conveying, completing the positioning and conveying of the circuit board.

[0050] By placing the field effect transistors one by one on the second transmission belt 38, the second transmission belt 38 transports each group of field effect transistors one by one to the bearing part 6 that attracts and fits each other. A baffle is provided on the side of the bearing part 6 farthest from the second belt 38, and a second pressure sensor is installed on the baffle. When the corresponding field effect transistor presses the second pressure sensor against the side of the baffle, the second pressure sensor transmits a signal to the controller 22. The controller 22 controls the third motor 39 to stop, and the second belt 38 stops conveying. At this time, each group of field effect transistors is placed on the corresponding bearing part 6, and the conveyance of each group of field effect transistors is completed.

[0051] For example 3, please refer to Figure 1-15 The third embodiment makes the following improvements on the basis of the second embodiment. Specifically, the lifting part includes symmetrically arranged U-shaped plates 42; a connecting plate 43 is symmetrically fixed between the two U-shaped plates 42; the U-shaped plates 42 are symmetrically fixed with lifting rods 44 that slide with the corresponding supporting sleeves 5; a supporting spring is fixed between the bottom end of the lifting rod 44 and the inner bottom surface of the supporting sleeve 5.

[0052] A second bidirectional screw 45 is rotatably provided between the inner walls of a U-shaped plate 42; a guide rod 46 is fixed between the inner walls of another U-shaped plate 42; a fourth motor 80 is installed on the side of the U-shaped plate 42; the output end of the fourth motor 80 is fixedly connected to one end of the second bidirectional screw 45; the clamping part 19 includes a positioning plate 47; a plurality of mounting holes 79 are evenly provided on the surface of the positioning plate 47; a sliding sleeve 48 and a threaded sleeve 49 are fixed in sequence on the surface of the positioning plate 47; the sliding sleeve 48 is slidably matched with the guide rod 46; the threaded sleeve 49 is threadedly rotatably matched with the second bidirectional screw 45; a plurality of positioning frames are evenly installed on the bottom surface of the positioning plate 47; the positioning frame includes a top plate 50; bolts 51 that are plug-matched with the mounting holes 79 are symmetrically fixed on the top of the top plate 50; a fastening nut 52 is threadedly connected to the bolt 51.

[0053] A fixed frame 53 is symmetrically fixed to the bottom surface of the top plate 50; guide rails 54 are symmetrically fixed to the inner walls of the fixed frame 53; a vertical plate 55 is symmetrically fixed to the bottom surface of the top plate 50 between the two fixed frames 53; an L-shaped guide plate 56 is fixed to the bottom of the vertical plate 55; a horizontal plate 57 is fixed between the two L-shaped guide plates 56; an avoidance groove 58 is formed between the two vertical plates 55 and the L-shaped guide plate 56; a lifting frame 59 is slidably arranged between the inner walls of the fixed frames 53; lifting grooves that slidably cooperate with the guide rails 54 are symmetrically opened on two opposite sides of the lifting frame 59; a clamping member 60 is slidably arranged inside the lifting frame 59; the clamping member 60 includes an L-shaped lifting plate 61 slidably arranged between the inner walls of the fixed frames 53; a ball head 62 that matches the L-shaped guide plate 56 is fixed to the end of the L-shaped lifting plate 61; a reset spring 63 mounted on the L-shaped lifting plate 61 is fixed between the ball head 62 and the lifting frame 59; a clamping plate 64 is fixed to the bottom end of the L-shaped lifting plate 61.

[0054] A pressing member 65 is slidingly arranged in the avoidance groove 58; the pressing member 65 includes a pressing plate 66 symmetrically slidingly arranged in the corresponding avoidance groove 58; the top of the lifting frame 59 is located on both sides of the pressing plate 66 and connecting springs 81 are symmetrically fixed; the top of the connecting spring 81 is fixed to the top of the fixed frame 53; a fixing plate 67 is symmetrically fixed between the two pressing plates 66; an ear seat 68 is fixed on the side of the fixing plate 67; an extension seat 69 is fixed on the side of the U-shaped plate 42; a second electric push rod 70 electrically connected to the output end of the controller 22 is fixed on the surface of the extension seat 69; the telescopic end of the second electric push rod 70 is fixedly connected to the extension seat 69.

[0055] A mounting plate 71 is fixed on the top of the L-shaped support plate 20; a third bidirectional screw rod 72 is rotatably arranged between the two mounting plates 71; a limiting rod 73 is fixed between the two mounting plates 71; a sliding plate 74 that is symmetrically slidably arranged on the limiting rod 73 and is threadedly rotatably matched with the third bidirectional screw rod 72; transverse guide plates 75 are symmetrically fixed at both ends of the sliding plate 74; an inclined guide plate 76 is arranged at the end of the transverse guide plate 75 tilted downward; a support rod 77 is fixed on the top of the sliding sleeve 48 and the screw sleeve 49; a guide plate 77 that is adapted to the transverse guide plate 75 and the inclined guide plate 76 is fixed on the top of the support rod 77 Ball 78; for circuit boards of different thicknesses, the two sets of connecting plates 43 are driven to slide synchronously along the limit rod 73 by rotating the third bidirectional screw rod 72. When the thickness of the circuit board increases, the height of the field effect transistor corresponding to the same welding position will decrease. At this time, the third bidirectional screw rod 72 is rotated to make the two connecting plates 43 slide closer to each other. When the thickness of the circuit board decreases, the height of the field effect transistor corresponding to the same welding position will increase. At this time, the third bidirectional screw rod 72 is rotated to make the two connecting plates 43 slide away from each other, thereby improving the practicality of the device.

[0056] Working principle of the third embodiment:

[0057] When each group of field effect transistors is evenly distributed, the second electric push rod 70 is controlled to start and extend, driving the pressing member 65 to slide and descend along the corresponding avoidance groove 58, and the two groups of pressing plates 66 gradually slide down to squeeze the lifting frame 61, and the corresponding connecting springs 81 are stretched, thereby driving the L-shaped lifting plate 61 to slide and descend synchronously. Under the elastic force of the reset spring 63, the ball head 62 is driven to press against the side of the L-shaped guide plate 56. During the sliding and descending process of the L-shaped lifting plate 61, the ball head 62 is first squeezed to drive the L-shaped lifting plate 61 to slide in the direction away from the L-shaped guide plate 56, and the reset spring 63 is used to reset the L-shaped lifting plate 61. The spring 63 is compressed, and during this process the two clamps 64 move away from each other and spread apart during the descent, with the corresponding field effect transistor placed between the two clamps 64. Subsequently, the ball head 62 slides toward the direction close to the L-shaped guide plate 56 under the elastic restoring force of the restoring spring 63. The clamping surface of the clamp 64 is provided with a heat-resistant rubber layer, so that the two groups of clamps 64 approach each other during the descent, clamping and fixing the corresponding field effect transistors, thereby achieving synchronous and stable clamping of multiple groups of field effect transistors. After the clamping is completed, the external vacuum pump is controlled to stop, and the adsorption and fixation of the corresponding field effect transistors by the support platform 6 is released.

[0058] In the initial state, under the elastic force of the supporting spring, the two U-shaped plates 42 and the corresponding clamping parts 19 are driven to press tightly against the bottom surface of the cross guide plate 75, that is, the guide balls 78 on the two clamping parts 19 are pressed tightly against the bottom surface of the cross guide plate 75, and the fourth motor 80 is controlled to start, driving the second bidirectional screw 45 to rotate, thereby driving the two clamping parts 19 and the groups of field effect transistors clamped and fixed to slide close to each other along the guide rod 46. During the sliding process of the guide balls 78 on the bottom surface of the cross guide plate 75, the groups of field effect transistors clamped and fixed slide off from the surface of the corresponding L-shaped slide 8. When the guide balls 79 slide along the bottom surface of the inclined guide plate 76, the clamped and fixed field effect transistors are driven to slide synchronously along the length direction of the guide rod 46 and descend at the same time, until the bottom surfaces of the groups of field effect transistors are synchronously pressed and fitted against the surface of the circuit board, completing the synchronous clamping of the groups of field effect transistors at the corresponding welding packaging positions of the circuit board, which is convenient for subsequent welding packaging.

[0059] After all the field effect transistors are welded and packaged, the second electric push rod 70 is controlled to retract and reset. Under the elastic reset force of the connecting spring 81, the lifting frame 61 is driven to slide and rise, thereby driving the L-shaped lifting plate 61 to slide and rise and reset, so that the two groups of clamping plates 64 move away from each other and rise, and separate from the corresponding field effect transistors. Then, under the elastic reset force of the reset spring 63, the two groups of clamping plates 64 move closer to each other and reset during the rising process; then, the fourth motor 80 is controlled to start to drive the second bidirectional screw rod 45 to rotate in the opposite direction, thereby driving the two clamping parts 19 to slide away from each other, and under the elastic reset force of the supporting spring, driving the two clamping parts 19 to rise and reset during the process of moving away from each other; the first electric push rod 41 is controlled to start to extend and drive the L-shaped limit plate 40 to slide away from the side plate 4, thereby removing the obstruction to the circuit board that has been welded and packaged, and the first motor 30 is controlled to start to drive the first belt roller 28 to rotate, thereby driving the first belt 29 to transport the welded and packaged circuit board and the field effect transistor out.

[0060] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all 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.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0064] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A semiconductor field effect transistor packaging structure with a positioning function, comprising a conveying frame (1) for conveying a circuit board; characterized in that: A packaging frame (2) is arranged above the conveying frame (1); the packaging frame (2) comprises a symmetrically arranged conveying platform (3); a side plate (4) is fixed to the side of the conveying platform (3); a supporting sleeve (5) is symmetrically fixed to the top of the side plate (4); a plurality of bearing parts (6) are slidably arranged on the top of the conveying platform (3); a field effect transistor is adsorbed on the top of the bearing part (6); and equidistant parts (7) are connected between each of the bearing parts (6); The bearing portion (6) comprises an L-shaped slide (8) with a hollow interior; the bottom of the L-shaped slide (8) is connected to an exhaust pipe (9), and the top and side surfaces thereof are provided with adsorption holes (10); an annular groove (11) is provided on the outer peripheral side surface of the exhaust pipe (9); the equidistant portion (7) comprises a plurality of rotating rings (12) rotatably matched with the annular grooves (11); connecting ropes (13) are connected between adjacent rotating rings (12); The top of the L-shaped slide (8) is symmetrically provided with a first U-shaped groove (14) and a second U-shaped groove (15); first electromagnets (16) connected in series are fixed at both ends of the first U-shaped groove (14); second electromagnets (17) and third electromagnets (18) connected in series are fixed at both ends of the second U-shaped groove (15); the first electromagnets (16) have the same magnetic properties; the second electromagnets (17) and the third electromagnets (18) have opposite magnetic properties; A lifting portion is slidably arranged between each of the supporting sleeves (5); a clamping portion (19) for clamping a field effect transistor is symmetrically slidably arranged on the lifting portion; an L-shaped support plate (20) is fixed to the side of the conveying platform (3); a support platform (21) is fixed to the side of the L-shaped support plate (20); a controller (22) and a six-axis robot arm are sequentially mounted on the surface of the support platform (21); and a welding head is fixedly mounted on the output end of the six-axis robot arm.

2. The semiconductor field effect transistor packaging structure with positioning function according to claim 1, characterized in that: The top of the conveying platform (3) is provided with a slide groove (23) that slidably cooperates with the exhaust pipe (9), and the top thereof is symmetrically provided with guide grooves (24) on both sides of the slide groove (23); the bottom surface of the L-shaped slide platform (8) is symmetrically fixed with guide rails (25) that interact and cooperate with the guide grooves (24); Each of the exhaust pipes (9) is connected to an exhaust end of an external vacuum pump through a hose; an output end of the controller (22) is electrically connected to each of the first electromagnets (16), the second electromagnets (17), the third electromagnets (18), the six-axis robot arm, and the external vacuum pump; each of the first electromagnets is electrically connected in series in sequence; each of the second electromagnets (17) and the third electromagnets (18) is electrically connected in series in an alternating manner; The side of the L-shaped slide (8) is provided with a screw hole; the side of the side plate (4) is evenly provided with a plurality of positioning holes (26); the screw holes are screwed with fastening screws (27) that are plugged into and matched with the corresponding positioning holes (26); and the bottom surfaces of the two conveying platforms (3) are fixed with support legs.

3. The semiconductor field effect transistor packaging structure with positioning function according to claim 2, characterized in that: First belt rollers (28) are symmetrically fixed between the conveying frames (1); a first belt (29) is provided for transmission between the two first belt rollers (28); a first motor (30) is fixedly mounted on the conveying frame (1) and is electrically connected to an output end of a controller (22); the output end of the first motor (30) is fixedly connected to one end of the first belt roller (28); An ear plate (31) is fixed to the bottom surface of the L-shaped support plate (20); a second motor (32) electrically connected to the output end of the controller (22) is fixed to the side of one of the ear plates (31); a first bidirectional screw rod (33) is fixedly and rotatably arranged between the two ear plates (31); the output end of the second motor (32) is fixedly connected to one end of the first bidirectional screw rod (33); an L-shaped slide plate (34) is slidably arranged on the side of the side plate (4) and is threadably matched with the first bidirectional screw rod (33); a push plate (35) is fixed to the side of the L-shaped slide plate (34); and the circuit board is slidably arranged between the two push plates (35).

4. The semiconductor field effect transistor packaging structure with positioning function according to claim 3, characterized in that: A baffle (36) is fixed to the end of the side plate (4); a second belt roller (37) is symmetrically arranged between the two baffles (36) for rotation; a second belt (38) is symmetrically arranged between the two second belt rollers (37) for transmission; a third motor (39) is fixed to the side of one of the baffles (36) and is electrically connected to the output end of the controller (22); the output end of the third motor (39) is fixedly connected to the end of the second belt roller (37); A baffle is fixed on the side of the outermost L-shaped slide (8) away from the baffle (36); an L-shaped limit plate (40) is slidably provided through the side of the push plate (35); a first electric push rod (41) electrically connected to the output end of the controller (22) is fixed on the side of the push plate (35); and the telescopic end of the first electric push rod (41) is fixedly connected to the L-shaped limit plate (40).

5. The semiconductor field effect transistor packaging structure with positioning function according to claim 4, characterized in that: The lifting part comprises symmetrically arranged U-shaped plates (42); a connecting plate (43) is symmetrically fixed between the two U-shaped plates (42); a lifting rod (44) slidably matched with a corresponding supporting sleeve (5) is symmetrically fixed to the U-shaped plates (42); and a supporting spring is fixed between the bottom end of the lifting rod (44) and the inner bottom surface of the supporting sleeve (5).

6. The semiconductor field effect transistor packaging structure with positioning function according to claim 5, characterized in that: A second bidirectional screw (45) is rotatably disposed through the inner wall of one of the U-shaped plates (42); a guide rod (46) is fixed between the inner walls of the other U-shaped plate (42); a fourth motor (80) is mounted on the side of the U-shaped plate (42); an output end of the fourth motor (80) is fixedly connected to one end of the second bidirectional screw (45); the clamping portion (19) includes a positioning plate (47); a plurality of mounting holes (79) are evenly formed on the surface of the positioning plate (47); A sliding sleeve (48) and a threaded sleeve (49) are fixed in sequence on the surface of the positioning plate (47); the sliding sleeve (48) is slidably matched with the guide rod (46); and the threaded sleeve (49) is threadably matched with the second bidirectional screw rod (45); A plurality of positioning frames are evenly mounted on the bottom surface of the positioning plate (47); the positioning frame comprises a top plate (50); bolts (51) that are plugged into and fit with the mounting holes (79) are symmetrically fixed to the top of the top plate (50); and fastening nuts (52) are threaded onto the bolts (51).

7. The semiconductor field effect transistor packaging structure with positioning function according to claim 6, characterized in that: A fixing frame (53) is symmetrically fixed on the bottom surface of the top plate (50); guide rails (54) are symmetrically fixed on both sides of the inner wall of the fixing frame (53); a vertical plate (55) is symmetrically fixed on the bottom surface of the top plate (50) between the two fixing frames (53); an L-shaped guide plate (56) is fixed at the bottom of the vertical plate (55); a horizontal plate (57) is fixed between the two L-shaped guide plates (56); and an avoidance groove (58) is formed between the two vertical plates (55) and the L-shaped guide plates (56); A lifting frame (59) is slidably arranged between the inner walls of the fixed frame (53); lifting grooves slidably matched with the guide rail (54) are symmetrically provided on two opposite sides of the lifting frame (59); a clamping member (60) is slidably arranged inside the lifting frame (59); the clamping member (60) comprises an L-shaped lifting plate (61) slidably arranged between the inner walls of the fixed frame (53); a ball head (62) matched with the L-shaped guide plate (56) is fixed at the end of the L-shaped lifting plate (61); a return spring (63) sleeved on the L-shaped lifting plate (61) is fixed between the ball head (62) and the lifting frame (59); and a clamping plate (64) is fixed at the bottom end of the L-shaped lifting plate (61).

8. The semiconductor field effect transistor packaging structure with positioning function according to claim 7, characterized in that: A pressing member (65) is slidably arranged in the avoidance groove (58); the pressing member (65) comprises a pressing plate (66) symmetrically slidably arranged in the corresponding avoidance groove (58); a connecting spring (81) is symmetrically fixed on both sides of the pressing plate (66) at the top of the lifting frame (59); the top of the connecting spring (81) is fixed to the top of the fixed frame (53); a fixing plate (67) is symmetrically fixed between the two pressing plates (66); an ear seat (68) is fixed on the side of the fixing plate (67); an extension seat (69) is fixed on the side of the U-shaped plate (42); a second electric push rod (70) electrically connected to the output end of the controller (22) is fixed on the surface of the extension seat (69); the telescopic end of the second electric push rod (70) is fixedly connected to the extension seat (69).

9. The semiconductor field effect transistor packaging structure with positioning function according to claim 8, characterized in that: A mounting plate (71) is fixed on the top of the L-shaped support plate (20); a third bidirectional screw rod (72) is rotatably arranged between the two mounting plates (71); a limiting rod (73) is fixed between the two mounting plates (71); a sliding plate (74) is symmetrically slidably arranged on the limiting rod (73) and is threadably matched with the third bidirectional screw rod (72); transverse guide plates (75) are symmetrically fixed at both ends of the sliding plate (74); an inclined guide plate (76) is arranged at the end of the transverse guide plate (75) tilted downward; A support rod (77) is fixed on the top of the sliding sleeve (48) and the threaded sleeve (49); A guide ball (78) adapted to the transverse guide plate (75) and the inclined guide plate (76) is fixed to the top end of the support rod (77).

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