Batch conveying device for circuit board finished products

Abstract

The invention relates to the technical field of circuit board processing, in particular to a circuit board finished product batch conveying device which comprises a workbench and a conveying belt arranged in the workbench, the outer wall of one side of the workbench is fixedly connected with a second electric push rod, the output end of the second electric push rod is fixedly connected with a connecting frame, and the connecting frame is arranged in the workbench in a sliding mode. A first electric push rod is fixedly connected to the bottom end of the connecting frame, a pneumatic suction cup is arranged at the bottom end of the first electric push rod, and a collecting box is arranged on one side of the workbench. According to the circuit board finished product batch conveying device, the trapezoid block does not play a limiting role after rotating, the trapezoid block can sequentially stretch into the first notches and the second notches when moving downwards, the downward inclined face of the trapezoid block is compressed inwards by the first notches and the second notches, the speed reduction effect is achieved, and the conveying efficiency is improved. And during loading, the sucked circuit board does not need to be moved downwards into the collecting box, so that the loading efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board processing, and in particular to a device for conveying finished circuit board products in batches. Background Art

[0002] At present, with the continuous acceleration of the replacement of electronic products, the workload of circuit board production lines is also increasing. However, efficient and fast production of circuit boards is an urgent need of the production line. The production line transports circuit boards through conveyor belts. When the conveyor belts are transported to the designated location, the finished circuit boards need to be removed from the conveyor belts for packaging and transportation.

[0003] In the patent with publication number CN117963529A, the transfer component converts the circuit board on the material picking component to a state parallel to the loading component, and the first driving component controls the loading component to move at equal intervals through the adjusting component, thereby adjusting the unloading position of the transfer component on the loading component, so that the circuit boards can be vertically loaded in the loading component at equal intervals, avoiding the situation where the circuit boards after loading have poor uniformity. However, when loading the circuit boards, this patent needs to move the sucked circuit boards downward to the loading component, which takes time and reduces the overall loading efficiency.

[0004] In the patent with publication number CN117886111A, the pushing mechanism drives the moving mechanism to move when it is working, so that the pallet automatically moves after the circuit board is pushed, achieving coordinated linkage movement, making the transmission efficiency between the structures high and the response speed fast, thereby improving the efficiency of automatic loading of finished circuit boards. This patent can realize the movement of the pallet, so that the pallet is located at the top each time it is loaded. The suction cup technology is very mature and will not cause the circuit board to fall if used properly. However, the device does not use the suction of the suction cup, which will cause friction between the circuit board and the belt conveyor and the pallet, causing damage to the double-sided circuit board. In addition, after the device is loaded, the entire pallet needs to be moved down again, which is more troublesome and further reduces the efficiency of subsequent transportation. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a device for conveying finished circuit boards in batches.

[0006] The present invention adopts the following technical scheme, a batch conveying device for finished circuit boards, comprising a workbench and a conveyor belt arranged in the workbench, a second electric push rod is fixedly connected to the outer wall of one side of the workbench, a connecting frame is fixedly connected to the output end of the second electric push rod, and the connecting frame is slidably arranged in the workbench, a first electric push rod is fixedly connected to the bottom end of the connecting frame, a pneumatic suction cup is arranged at the bottom end of the first electric push rod, a collection box is arranged on one side of the workbench, and further comprises:

[0007] A carrying platform, used for carrying the circuit board, the carrying platform is arranged in the collection box, and a plurality of the carrying platforms are arranged at equal intervals above and below;

[0008] A step-by-step lifting mechanism is used to move the supporting platform of each layer upward in sequence, so that the sucked circuit board does not need to be moved down to the collection box. The step-by-step lifting mechanism is arranged on the connecting frame and the collection box. The step-by-step lifting mechanism includes a lifting platform. Both opposite side walls of the lifting platform are provided with a plurality of trapezoidal grooves at equal intervals above and below.

[0009] An extension mechanism is used for extending the carrying platform of each layer when it moves to the step-by-step lifting mechanism in sequence, so that the sucked circuit board is more convenient to place, and the extension mechanism is arranged on the carrying platform;

[0010] The reset mechanism is used to enable the lifting platform to automatically move downward by gravity after the circuit board is loaded on the bearing platform at the bottom side of the lifting platform, and more resistance is generated during the descent to make the descent smoother. The reset mechanism is arranged on the lifting platform, and the reset mechanism includes a trapezoidal block, which is arranged at the bottom of the outer wall on two opposite sides of the lifting platform. A sleeve is movably sleeved on the outer wall of one end of the trapezoidal block close to the lifting platform, and the sleeve is rotatably arranged in the lifting platform. A gear is fixedly connected to the end of the sleeve away from the trapezoidal block, and a roller is fixedly connected to the end of the gear away from the sleeve. A torsion spring is fixedly connected between the outer wall of the roller and the lifting platform, and a spur rack is meshedly connected to one side of the gear, and the upper end of the spur rack extends outside the lifting platform.

[0011] As a further description of the above technical solution: a fourth spring is fixedly connected to the rotating roller, a lever is movably inserted into the outer wall of the fourth spring, limiting grooves are provided at the lower ends of the two opposite sides of the spur rack in the lifting platform, one end of the lever located on the outer side of the rotating rod abuts against an extrusion ring, the extrusion ring is fixedly connected to the lifting platform, a notch is provided on the upper side of the extrusion ring, a sliding rod is abutted at the upper end of the lever in the rotating rod, the sliding rod is horizontally slidably arranged in the rotating rod, one end of the sliding rod located in the trapezoidal block is fixedly connected to a slide, and two opposite sides of the end of the slide away from the rotating rod are abutted against blocking rods, a sixth spring is fixedly connected between the side wall of one end of the blocking rod and the trapezoidal block, and the blocking rod is slidably arranged on the side wall of the trapezoidal block away from the lifting platform.

[0012] As a further description of the above technical solution: a plurality of blocking rods are evenly spaced on the collection box on two opposite sides of the lifting platform, the spacing between the blocking rods is equal to the spacing between the trapezoidal grooves, the number of the blocking rods is one more than the trapezoidal grooves, and a second slot is provided in the collection box between adjacent blocking rods.

[0013] As a further description of the above technical solution: the step-by-step lifting mechanism includes a lifting platform that is slid up and down in the collection box, and a plug rod is slid up and down on a side wall of the connecting frame close to the lifting platform. A first spring is fixed between the upper wall of one end of the plug rod located in the connecting frame and the connecting frame, positioning rods are fixed to the outer walls on both opposite sides of the plug rod, and fixed ladder blocks are fixed to both opposite sides of the lifting platform in the collection box.

[0014] As a further description of the above technical solution: the extension mechanism includes an auxiliary rod movably inserted in the supporting platform, a second spring is fixedly connected between the end of the supporting platform away from the connecting frame and the lifting platform, a slider is slidably arranged on the upper inclined surface of the trapezoidal groove, a positioning roller is arranged in the lifting platform, a pull rope is fixedly connected between one end of the slider and the end of the supporting platform away from the connecting frame, clamping plates are slidably arranged on both opposite sides of the upper surface of the supporting platform, a third spring is fixedly connected between the lower end of the clamping plate and the supporting platform, fixed extrusion plates are fixedly connected to the collecting box on both opposite sides of the supporting platform, and the other end of the fixed extrusion plate extends into the supporting platform, and a first inclined surface is provided on the bottom side of the clamping plate.

[0015] As a further description of the above technical solution: a plurality of the lifting platforms and the first electric push rods are arranged at equal intervals.

[0016] As a further description of the above technical solution: a fixed extrusion block is fixedly connected to the collection box just below the extrusion frame, an extrusion frame is provided on the upper side of the fixed extrusion block, the upper end of the extrusion frame abuts against the limiting frame, a fifth spring is fixedly connected between the upper end of the extrusion frame and the lifting platform, and a seventh spring is fixedly connected between the inner end of the limiting frame and the spur rack.

[0017] As a further description of the above technical solution: the width of the second notch is smaller than that of the first notch.

[0018] The present invention provides a circuit board finished product batch conveying device through improvement, which has the following improvements and advantages compared with the prior art:

[0019] First, the gear drives the sleeve and the trapezoidal block to rotate 180 degrees, so that the bottom of the trapezoidal block faces downward, and the limit frame is inserted into the limit groove. When the insertion rod is removed, the lifting platform moves downward by its own gravity. The trapezoidal block no longer plays a limiting role after rotation. When the trapezoidal block moves downward, it will sequentially extend into each first notch and the second notch. The downward inclined surface of the trapezoidal block is compressed inward by the first notch and the second notch, which plays a deceleration role, so that the lifting platform and the loaded circuit board move downward more smoothly, and the trapezoidal block will decelerate through the first notch and the second notch only when it moves downward. When it moves upward, it will not be blocked by the second notch, which saves more mechanical work;

[0020] Second, the sucked circuit board is placed on the loading platform, and then the insertion rod is moved out. When the insertion rod is moved out, the insertion rod will move downward due to the elastic force of the first spring, so that the insertion rod is aligned with the next trapezoidal groove, and the process is repeated. This makes it unnecessary to move the sucked circuit board down to the collection box during loading, thus saving time and improving loading efficiency.

[0021] To summarize, the trapezoidal block no longer plays a limiting role after rotation, and when the trapezoidal block moves downward, it will extend into each of the first slot and the second slot in turn, and the downward inclined surface of the trapezoidal block will be compressed inward by the first slot and the second slot, which plays a decelerating role. The trapezoidal block will be decelerated by the first slot and the second slot only when it moves downward. When moving upward, it will not be blocked by the second slot, which saves more mechanical work. When loading, there is no need to move the sucked circuit board down to the collection box, which saves time and improves loading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 A schematic diagram of a circuit board finished product batch conveying device provided in an embodiment of the present invention Figure 1 ;

[0024] Figure 2 A schematic diagram of a circuit board finished product batch conveying device provided in an embodiment of the present invention Figure 2 ;

[0025] Figure 3 A schematic diagram of the structure of the plunger provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a lifting platform provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the structure of an extension mechanism provided by an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of a fixed extrusion plate provided in an embodiment of the present invention;

[0029] Figure 7 A three-dimensional cross-sectional view of a collection box provided by an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the structure of a reset mechanism provided by an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of the structure of an extrusion frame provided by an embodiment of the present invention;

[0032] Fig.10 A schematic diagram of the structure of a sliding rod provided in an embodiment of the present invention;

[0033] Fig.11 A schematic diagram of the structure of a blocking rod provided by an embodiment of the present invention;

[0034] Fig.12 for Figure 2 The enlarged view of point A in the middle;

[0035] Fig.13 for Figure 3 The enlarged view of point B in the middle;

[0036] Fig.14 for Figure 7 Enlarged view of point C in the middle;

[0037] Fig.15 for Fig. 9 The enlarged view of point D in the middle;

[0038] Fig.16 for Fig.10 Enlarged view of point E in the middle.

[0039] In the figure: 1, workbench; 2, conveyor belt; 3, first electric push rod; 4, pneumatic suction cup; 5, collection box; 6, bearing platform; 7, second electric push rod; 8, connecting frame; 9, step-by-step lifting mechanism; 91, insertion rod; 92, first spring; 93, lifting platform; 94, trapezoidal groove; 95, positioning rod; 96, fixed ladder block; 10, extension mechanism; 101, second spring; 102, auxiliary rod; 103, slider; 104, positioning roller; 105, pull rope; 106, fixed extrusion plate; 107, clamping plate; 108, first inclined plane; 109, third spring; 11 , reset mechanism; 111, trapezoidal block; 112, sleeve; 113, gear; 114, spur rack; 115, roller; 116, torsion spring; 117, extrusion ring; 118, fourth spring; 119, blocking rod; 1110, fixed extrusion block; 1111, shifting rod; 1112, limiting groove; 1113, extrusion frame; 1114, fifth spring; 1115, rotating rod; 1116, sliding rod; 1117, slide frame; 1118, sixth spring; 1119, first notch; 1120, second notch; 1121, limiting frame; 1122, seventh spring. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0041] See also Figure 1 - Fig.16The embodiment of the present invention provides a technical solution: a batch conveying device for finished circuit boards, comprising a workbench 1 and a conveyor belt 2 arranged in the workbench 1, a second electric push rod 7 is fixedly connected to the outer wall of one side of the workbench 1, a connecting frame 8 is fixedly connected to the output end of the second electric push rod 7, and the connecting frame 8 is slidably arranged in the workbench 1, a first electric push rod 3 is fixedly connected to the bottom end of the connecting frame 8, a pneumatic suction cup 4 is arranged at the bottom end of the first electric push rod 3, a collection box 5 is arranged on one side of the workbench 1, and further comprises:

[0042] The carrying platform 6 is used to carry the circuit board. The carrying platform 6 is arranged in the collection box 5. A plurality of carrying platforms 6 are arranged at equal intervals above and below.

[0043] The step-by-step lifting mechanism 9 is used to move the supporting platform 6 of each layer upward in sequence, so that the sucked circuit board does not need to be moved down to the collection box 5. The step-by-step lifting mechanism 9 is arranged on the connecting frame 8 and the collection box 5. The step-by-step lifting mechanism 9 includes a lifting platform 93. The two opposite side walls of the lifting platform 93 are provided with a plurality of trapezoidal grooves 94 at equal intervals above and below.

[0044] An extension mechanism 10 is used for extending the carrying platform 6 of each layer when it moves to the step-by-step lifting mechanism 9 in sequence, so that the sucked circuit board is more convenient to place. The extension mechanism 10 is arranged on the carrying platform 6;

[0045] The reset mechanism 11 is used to enable the lifting platform 93 to automatically move downward by gravity after the circuit board is loaded on the bearing platform 6 at the bottom of the lifting platform 93, and to generate more resistance when descending, so that the descent is smoother. The reset mechanism 11 is arranged on the lifting platform 93, and the reset mechanism 11 includes a trapezoidal block 111, which is arranged at the bottom of the outer wall of the two opposite sides of the lifting platform 93, and the outer wall of the end of the trapezoidal block 111 close to the lifting platform 93 is movably sleeved with a sleeve 112, and the sleeve 112 is rotatably arranged in the lifting platform 93, and the end of the sleeve 112 away from the trapezoidal block 111 is fixedly connected to a gear 113, and the end of the gear 113 away from the sleeve 112 is fixedly connected to a roller 115, a torsion spring 116 is fixedly connected between the outer wall of the rotating roller 115 and the lifting platform 93, a straight rack 114 is meshedly connected to one side of the gear 113, and the upper end of the straight rack 114 extends to the outside of the lifting platform 93, a fourth spring 118 is fixedly connected to the rotating roller 115, and a lever 1111 is movably inserted into the outer wall of the fourth spring 118, and a limit groove 1112 is provided at the lower end of the two opposite sides of the straight rack 114 in the lifting platform 93, and an end of the lever 1111 located on the outer side of the rotating rod 1115 abuts against an extrusion ring 117, and the extrusion ring 117 is fixed to the lifting platform 93, and a notch is provided on the upper side of the extrusion ring 117, and a sliding rod is abutted at the upper end of the lever 1111 in the rotating rod 1115 1116, the sliding rod 1116 is horizontally slidably arranged in the rotating rod 1115, one end of the sliding rod 1116 located in the trapezoidal block 111 is fixedly connected to a slide 1117, and the two opposite sides of the end of the slide 1117 away from the rotating rod 1115 are both against the blocking rod 119, and the sixth spring 1118 is fixedly connected between the side wall of one end of the blocking rod 119 and the trapezoidal block 111, and the blocking rod 119 is slidably arranged on the side wall of the trapezoidal block 111 away from the lifting platform 93, and a plurality of blocking rods 119 are evenly spaced on the two opposite sides of the lifting platform 93 on the collection box 5, and the spacing between the plurality of blocking rods 119 is equal to the spacing between the plurality of trapezoidal grooves 94, and the blocking rod 119 is fixedly connected to the trapezoidal block 111. 9 is one more than the trapezoidal groove 94, a second slot 1120 is arranged between adjacent blocking rods 119 in the collecting box 5, the width of the second slot 1120 is smaller than the first slot 1119, a plurality of slots 1120 are arranged at equal intervals on the lifting platform 93 and the first electric push rod 3, a fixed extrusion block 1110 is fixedly connected to the collecting box 5 just below the extrusion frame 1113, an extrusion frame 1113 is arranged on the upper side of the fixed extrusion block 1110, the upper end of the extrusion frame 1113 abuts against the limiting frame 1121, a fifth spring 1114 is fixedly connected between the upper end of the extrusion frame 1113 and the lifting platform 93, and a seventh spring 1122 is fixedly connected between the inner end of the limiting frame 1121 and the spur rack 114.

[0046] Specifically, when the lowermost supporting platform 6 moves to the upper end, the upper end of the spur rack 114 will be squeezed by the upper end of the chute where the spur rack 114 is located, and the collecting box 5 squeezes the spur rack 114 downward, so that the gear 113 drives the sleeve 112 and the trapezoidal block 111 to rotate 180 degrees, so that the bottom of the trapezoidal block 111 faces downward, and the limiting frame 1121 is inserted into the limiting groove 1112. When the insertion rod 91 is moved out, the lifting platform 93 moves downward by its own gravity, and the trapezoidal block 111 no longer plays a limiting role after rotating. When the trapezoidal block 111 moves downward, it will extend into each of the first slots 1119 and the second slots 1120 in turn. The downward inclined surface of the trapezoidal block 111 is compressed inward by the first slots 1119 and the second slots 1120, which has the effect of decelerating the speed, so that the lifting platform 93 and the loaded circuit boards move downward more smoothly. When the trapezoidal block 111 moves to the lower side, the extrusion frame 1113 is squeezed upward by the fixed extrusion block 1110, so that the extrusion frame 1113 contracts the limit frame 1121, so that the trapezoidal block 111 automatically rotates and resets.

[0047] When the trapezoidal block 111 rotates 180 degrees, the lever 1111 will face upward, so that the lever 1111 is disengaged from the extrusion ring 117, and then the blocking rods 119 on both sides can automatically shrink inward, so that the trapezoidal block 111 can extend into the first slot 1119 and the second slot 1120 when it moves downward. When the trapezoidal block 111 moves upward, the blocking rod 119 extends out. Since the width of the second slot 1120 is smaller than that of the first slot 1119, the trapezoidal block 111 can only extend into the first slot 1119, which plays a limiting role. This makes the trapezoidal block 111 slow down through the first slot 1119 and the second slot 1120 only when it moves downward. When it moves upward, it will not be blocked by the second slot 1120, thereby saving more mechanical work.

[0048] In another embodiment provided by the present invention, the step-by-step lifting mechanism 9 includes a lifting platform 93 that is slidable up and down in the collection box 5, and a plug rod 91 is slidable up and down on a side wall of the connecting frame 8 close to the lifting platform 93. The plug rod 91 is located on the upper wall of one end of the connecting frame 8 and a first spring 92 is fixedly connected between the connecting frame 8, and positioning rods 95 are fixedly connected to the outer walls on both opposite sides of the plug rod 91, and fixed ladder blocks 96 are fixedly connected to both opposite sides of the lifting platform 93 in the collection box 5.

[0049] In another embodiment provided by the present invention, the extension mechanism 10 includes an auxiliary rod 102 movably inserted into the supporting platform 6, a second spring 101 is fixedly connected between the end of the supporting platform 6 away from the connecting frame 8 and the lifting platform 93, a slider 103 is slidably arranged on the upper inclined surface of the trapezoidal groove 94, a positioning roller 104 is arranged in the lifting platform 93, a pull rope 105 is fixedly connected between one end of the slider 103 and the end of the supporting platform 6 away from the connecting frame 8, clamping plates 107 are slidably arranged on both opposite sides of the upper surface of the supporting platform 6, a third spring 109 is fixedly connected between the lower end of the clamping plate 107 and the supporting platform 6, and fixed extrusion plates 106 are fixedly connected to both opposite sides of the supporting platform 6 on the collecting box 5, and the other end of the fixed extrusion plate 106 extends into the supporting platform 6, and a first inclined surface 108 is provided on the bottom side of the clamping plate 107.

[0050] Specifically, the sucked circuit board is placed on the supporting platform 6, and then the insertion rod 91 is moved out. After the insertion rod 91 is moved out, the insertion rod 91 will move downward due to the elastic force of the first spring 92, so that the insertion rod 91 is aligned with the next trapezoidal groove 94, and this reciprocating process is performed, so that the sucked circuit board does not need to be moved down to the collection box 5 during loading, which saves time and improves loading efficiency.

[0051] Working principle: When using the device, firstly, the circuit board is transported to the bottom of the pneumatic suction cup 4 through the conveyor belt 2, and then the circuit board is sucked by the cooperation of the first electric push rod 3 and the pneumatic suction cup 4, and then the second electric push rod 7 is started to move the pneumatic suction cup 4 and the circuit board toward the collection box 5. When the connecting frame 8 moves, the connecting frame 8 inserts the insertion rod 91 into the trapezoidal groove 94, and the positioning rod 95 is squeezed upward by the fixed ladder block 96, so that the insertion rod 91 also moves upward, and then the upper end of the insertion rod 91 conflicts with the inclined surface of the upper part of the trapezoidal groove 94. The insertion of the insertion rod 91 into the collection box 5 will make The entire lifting platform 93 moves upward, and when the carrier platform 6 moves to be parallel to the bottom end of the circuit board of the pneumatic suction cup 4, the trapezoidal block 111 will be ejected into the corresponding first notch 1119, so that the entire lifting platform 93 will not fall, and then the sucked circuit board is placed on the carrier platform 6, and then the insertion rod 91 is moved out. When the insertion rod 91 is moved out, the insertion rod 91 will move downward due to the elastic force of the first spring 92, so that the insertion rod 91 is aligned with the next trapezoidal groove 94, and this reciprocating process is performed, so that when loading, it is not necessary to move the sucked circuit board down to the collection box 5, saving time and improving loading efficiency;

[0052] First, when the insertion rod 91 contacts the upper inclined surface of the trapezoidal groove 94, the insertion rod 91 will press the slider 103 inward, so that the slider 103 drives the carrier 6 to move outward through the pull rope 105, and the carrier 6 moves outward, making it easier to load the sucked circuit board. When the insertion rod 91 is moved out, the carrier 6 will automatically rebound. When the carrier 6 moves out to the fixed extrusion plate 106, the clamping plates 107 on both sides will be squeezed outward by the fixed extrusion plate 106, which is convenient for clamping the circuit board when the carrier 6 rebounds later.

[0053] When the lowermost supporting platform 6 moves to the upper end, the upper end of the spur rack 114 will be squeezed by the upper end of the slide groove where the spur rack 114 is located, and the collecting box 5 squeezes the spur rack 114 downward, so that the gear 113 drives the sleeve 112 and the trapezoidal block 111 to rotate 180 degrees, so that the bottom of the trapezoidal block 111 faces downward, and the limiting frame 1121 is inserted into the limiting groove 1112. When the insertion rod 91 is moved out, the lifting platform 93 moves downward by its own gravity, and the trapezoidal block 111 no longer plays a limiting role after rotating. When block 111 moves downward, it will extend into each of the first slots 1119 and the second slots 1120 in sequence. The downward inclined surface of the trapezoidal block 111 is compressed inward by the first slots 1119 and the second slots 1120, which has the effect of decelerating the speed, so that the lifting platform 93 and the loaded circuit boards move downward more smoothly. When the trapezoidal block 111 moves to the lower side, the extrusion frame 1113 is squeezed upward by the fixed extrusion block 1110, so that the extrusion frame 1113 contracts the limit frame 1121, so that the trapezoidal block 111 automatically rotates and resets.

[0054] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for conveying finished circuit boards in batches, comprising a workbench (1) and a conveyor belt (2) arranged in the workbench (1), a second electric push rod (7) is fixedly connected to the outer wall of one side of the workbench (1), a connecting frame (8) is fixedly connected to the output end of the second electric push rod (7), and the connecting frame (8) is slidably arranged in the workbench (1), a first electric push rod (3) is fixedly connected to the bottom end of the connecting frame (8), a pneumatic suction cup (4) is arranged at the bottom end of the first electric push rod (3), a collecting box (5) is arranged on one side of the workbench (1), and the characteristics are as follows: Also includes: A carrying platform (6) for carrying a circuit board, the carrying platform (6) being arranged in the collection box (5), and a plurality of the carrying platforms (6) being arranged at equal intervals above and below; A step-by-step lifting mechanism (9) is used to move the supporting platform (6) of each layer upward in sequence, so that the sucked circuit board does not need to be moved down to the collection box (5). The step-by-step lifting mechanism (9) is arranged on the connecting frame (8) and the collection box (5). The step-by-step lifting mechanism (9) includes a lifting platform (93). Two opposite side walls of the lifting platform (93) are provided with a plurality of trapezoidal grooves (94) at equal intervals in the upper and lower directions. An extension mechanism (10) is used to extend the support platform (6) of each layer when it moves to the step-by-step lifting mechanism (9) in sequence, so that the sucked circuit board is more convenient to place, and the extension mechanism (10) is arranged on the support platform (6); The reset mechanism (11) is used to enable the lifting platform (93) to automatically move downward by gravity after a circuit board is loaded on the bearing platform (6) at the bottom of the lifting platform (93), and to generate more resistance when descending, so that the descent is smoother. The reset mechanism (11) is arranged on the lifting platform (93), and the reset mechanism (11) comprises a trapezoidal block (111). The trapezoidal block (111) is arranged at the bottom of the outer wall of two opposite sides of the lifting platform (93), and the trapezoidal block (111) is movably sleeved on the outer wall of one end of the lifting platform (93) close to the lifting platform (93). A sleeve (112) is provided, and the sleeve (112) is rotatably arranged in a lifting platform (93); one end of the sleeve (112) away from the trapezoidal block (111) is fixedly connected to a gear (113); one end of the gear (113) away from the sleeve (112) is fixedly connected to a roller (115); a torsion spring (116) is fixedly connected between the outer wall of the roller (115) and the lifting platform (93); one side of the gear (113) is meshedly connected to a spur rack (114); the upper end of the spur rack (114) extends outside the lifting platform (93).

2. A device for conveying finished circuit boards in batches according to claim 1, characterized in that: A fourth spring (118) is fixedly connected to the rotating roller (115), and a lever (1111) is movably inserted into the outer wall of the fourth spring (118). Limiting grooves (1112) are provided at the lower ends of two opposite sides of the spur rack (114) in the lifting platform (93). One end of the lever (1111) located on the outer side of the rotating rod (1115) abuts against an extrusion ring (117). The extrusion ring (117) is fixedly connected to the lifting platform (93). A notch is provided on the upper side of the extrusion ring (117). The rotating rod (1115) abuts against the upper end of the lever (1111). A sliding rod (1116) is provided, and the sliding rod (1116) is horizontally slidably arranged in the rotating rod (1115); one end of the sliding rod (1116) located in the trapezoidal block (111) is fixedly connected to a sliding bracket (1117), and two opposite sides of the end of the sliding bracket (1117) away from the rotating rod (1115) are both in contact with blocking rods (119); a sixth spring (1118) is fixedly connected between the side wall of one end of the blocking rod (119) and the trapezoidal block (111); and the blocking rod (119) is slidably arranged on the side wall of the trapezoidal block (111) away from the lifting platform (93).

3. A device for conveying finished circuit boards in batches according to claim 1, characterized in that: A plurality of blocking rods (119) are evenly spaced on two opposite sides of the lifting platform (93) on the collection box (5); the spacing between the blocking rods (119) is equal to the spacing between the trapezoidal grooves (94); the number of the blocking rods (119) is one more than the trapezoidal grooves (94); and a second notch (1120) is provided in the collection box (5) between adjacent blocking rods (119).

4. A device for conveying finished circuit boards in batches according to claim 1, characterized in that: The step-by-step lifting mechanism (9) comprises a lifting platform (93) which is slidably arranged up and down in the collection box (5); a plug rod (91) is slidably arranged on a side wall of the connecting frame (8) close to the lifting platform (93); a first spring (92) is fixedly connected between the upper wall of one end of the plug rod (91) located in the connecting frame (8) and the connecting frame (8); positioning rods (95) are fixedly connected to the outer walls of the two opposite sides of the plug rod (91); and fixed ladder blocks (96) are fixedly connected to the two opposite sides of the lifting platform (93) in the collection box (5).

5. The device for mass-transporting finished circuit boards according to claim 1, characterized in that: The extending mechanism (10) comprises an auxiliary rod (102) movably inserted in the bearing platform (6); a second spring (101) is fixedly connected between the end of the bearing platform (6) away from the connecting frame (8) and the lifting platform (93); a slider (103) is slidably arranged on the upper inclined surface of the trapezoidal groove (94); a positioning roller (104) is arranged in the lifting platform (93); one end of the slider (103) is fixedly connected to the end of the bearing platform (6) away from the connecting frame (8); A pull rope (105), a clamping plate (107) is slidably arranged on two opposite sides of the upper surface of the support platform (6), a third spring (109) is fixedly connected between the lower end of the clamping plate (107) and the support platform (6), a fixed extrusion plate (106) is fixedly connected on two opposite sides of the support platform (6) on the collection box (5), and the other end of the fixed extrusion plate (106) extends into the support platform (6), and a first inclined surface (108) is provided on the bottom side of the clamping plate (107).

6. The device for mass-transporting finished circuit boards according to claim 1, characterized in that: A plurality of the lifting platforms (93) and the first electric push rods (3) are arranged at equal intervals.

7. The device for conveying finished circuit boards in batches according to claim 1, characterized in that: A fixed extrusion block (1110) is fixedly connected in the collection box (5) and is located directly below the extrusion frame (1113); an extrusion frame (1113) is provided on the upper side of the fixed extrusion block (1110); the upper end of the extrusion frame (1113) abuts against a limiting frame (1121); a fifth spring (1114) is fixedly connected between the upper end of the extrusion frame (1113) and the lifting platform (93); and a seventh spring (1122) is fixedly connected between the inner end of the limiting frame (1121) and the spur rack (114).

8. The device for conveying finished circuit boards in batches according to claim 3, characterized in that: The width of the second notch (1120) is smaller than that of the first notch (1119).

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