Automatic dotting device of testing machine and dotting method thereof

Abstract

The automatic dotting device comprises a base and a detection camera, and is characterized in that a protection machine shell is arranged on the peripheral wall of the base, movable machine covers are arranged on the two sides of the protection machine shell, positioning baffles are arranged on the two sides of the upper end of the base, and the detection camera is arranged on the detection camera. Sliding guide rails are arranged at the corresponding positions of the two positioning baffles, the two sliding guide rails are jointly connected with a transverse rack in a sliding mode, and a transverse driving structure is arranged at the top end of the transverse rack. The invention relates to the technical field of circuit board dotting equipment. According to the automatic dotting device of the testing machine and the dotting method of the automatic dotting device, the circuit board is detected through the detection camera to distinguish good products and defective products of the circuit board, meanwhile, the dotting position is determined through the detection camera, the air pressure rod is controlled through the controller to push the sliding sleeve to move downwards, dotting is conducted on the surface of the circuit board, and compared with manual dotting, the dotting efficiency is greatly improved. The dotting accuracy can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board dotting equipment, in particular to an automatic dotting device for a testing machine and a dotting method thereof. Background Art

[0002] Circuit board dotting means marking the position and welding points of each component on the circuit board. The circuit board is also called the circuit board. The process difficulty and processing price are determined by the amount of wiring surface. Ordinary circuit boards are divided into single-sided wiring and double-sided wiring, commonly known as single-sided panels and double-sided panels.

[0003] In the process of circuit board production, there is a certain possibility of defective products, such as missing corners, broken wires and other quality problems. Therefore, in the production process, it is necessary to distinguish these defective circuit boards from good circuit boards to prevent defective products from entering the next process, causing components to be soldered on the defective circuit boards, resulting in component waste.

[0004] In the prior art, the inspection of defective circuit boards is mostly performed manually, by observing the shape of the circuit boards to distinguish good from defective products, and marking the good or defective products to facilitate the distinction in subsequent projects. However, this method is inefficient and often cannot meet production needs. In addition, the dot positions generally have large deviations, making it difficult to distinguish the marked areas in subsequent projects.

[0005] Therefore, those skilled in the art provide an automatic dotting device for a testing machine and a dotting method thereof to solve the problems raised in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide an automatic dotting device for a testing machine and a dotting method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: The above technical objectives of the present invention are achieved through the following technical solutions: A test machine automatic dotting device, comprising a base and a detection camera, characterized in that a protective housing is provided on the outer peripheral wall of the base, and movable covers are provided on both sides of the protective housing, positioning baffles are provided on both sides of the upper end of the base, and sliding guide rails are provided at positions corresponding to the two positioning baffles, the two sliding guide rails are slidably connected with a transverse frame together, and a transverse driving structure is provided at the top of the transverse frame, a transverse guide rail is provided on one side of the transverse frame, and a longitudinal frame is slidably connected to the outer peripheral side of the transverse guide rail, and a longitudinal driving structure is provided at the top of the longitudinal frame, and a dotting structure is provided on the side wall of the longitudinal frame, and a test installation platform is provided on the top surface of the base and at a position between the two positioning baffles; The test installation platform includes two positioning slides, which are arranged opposite to each other. A sliding frame is fixedly installed on the top of the positioning slide by bolts. An electric sliding support plate is arranged inside the sliding frame, and the upper end of the electric sliding support plate is fixedly connected to a limit plate. Both ends of the positioning slide are provided with loading and unloading structures, and an adjustment structure is arranged between the two positioning slides. The dotting structure includes a pneumatic rod and a sliding sleeve, the pneumatic rod is fixedly installed at the bottom end of the longitudinal frame, the sliding sleeve is slidably installed on the side wall of the longitudinal frame, and the side wall of the sliding sleeve is provided with a sliding sleeve positioning groove, and a guide block fixedly connected to the longitudinal frame is arranged inside the sliding sleeve positioning groove, the bottom ends of the pneumatic rod and the sliding sleeve are jointly connected to a mounting plate, and the mounting plate and the bottom end of the sliding sleeve are jointly provided with a plug-in hole, a dotting ink cartridge is arranged inside the sliding sleeve, and a detection camera is fixedly installed on one side of the mounting plate.

[0008] Furthermore, the dotting ink cartridge includes a circular sleeve, two bearing cavities are arranged inside the circular sleeve, a sleeve head matching the plug-in hole is arranged at the bottom end of the circular sleeve, and two dotting ink heads corresponding to the two bearing cavities are arranged at the bottom end of the sleeve head, and an inkjet pump is arranged at the top end of the circular sleeve.

[0009] Furthermore, guide rail grooves slidably matched with the sliding guide rails are arranged at both ends of the transverse frame, and clamping grooves are opened on both sides of the sliding guide rails, and linkage racks are arranged inside the clamping grooves.

[0010] Furthermore, the transverse drive structure includes a dual-axis synchronous motor, both ends of the motor shaft of the dual-axis synchronous motor are provided with transverse drive gears, the transverse drive gears are meshed with the linkage rack, and an extension wire is provided on one side of the dual-axis synchronous motor.

[0011] Furthermore, the longitudinal drive structure includes a drive frame, which is fixedly mounted on the top of the longitudinal frame. A servo motor is arranged inside the longitudinal frame, and a longitudinal drive gear is arranged at the motor shaft of the servo motor. A second rack is arranged at a position on the top surface of the transverse guide rail corresponding to the longitudinal drive gear, and the second rack is meshed with the longitudinal drive gear.

[0012] Furthermore, the adjustment structure includes a transmission screw, both ends of which are rotatably connected to mounting plates fixedly connected to the base, one end of one of the mounting plates is fixedly installed with an adjustment motor, the outer peripheral wall of the transmission screw is sleeved with a transmission sleeve, and the transmission sleeve is threadedly matched with the transmission screw, one end of the transmission sleeve is fixedly connected to a fixed bracket, and the other end is slidably provided with a sliding bracket, the fixed bracket and the sliding bracket are both L-shaped, one end of the fixed bracket is provided with an electric telescopic rod, and the telescopic end of the electric telescopic rod is fixedly connected to the sliding bracket.

[0013] Further: the loading and unloading structure includes a guide plate, support rods fixedly connected to the base are arranged at the four corners of the guide plate, a sliding groove is opened inside the guide plate, an electric slider is arranged inside the sliding groove, and a control machine is arranged at the top of the electric slider, a circuit board attraction structure is arranged at the bottom of the electric slider, and a positioning structure is arranged at the upper end of the base and at the bottom end of the guide plate.

[0014] Furthermore, the circuit board attraction structure includes a positioning plate, which is fixedly connected to the bottom end of the electric slider, and electric extension rods are arranged at the four corners of the bottom end of the positioning plate. The bottom ends of the synchronous electric extension rods are commonly connected to a synchronous plate, and the bottom end of the synchronous plate is magnetically connected to a number of pneumatic attraction heads.

[0015] Furthermore, the positioning structure includes a transverse plate, which is fixedly connected to the base, and two groups of transverse plates are provided, and are respectively arranged on both sides of the axis of the transmission screw, and a limiting platform is provided on the top of the transverse plate, and the limiting platform and the side wall of the positioning slide plate together form a right-angle corner, and the top surfaces of the opposite sides of the two limiting platforms are provided with limiting slide grooves, and the bottom wall of the limiting slide groove is flush with the top wall of the sliding bracket.

[0016] According to another aspect of the present invention, a dot marking method for an automatic dot marking device of a test machine is provided, which is used for the automatic dot marking device of the test machine, and comprises the following steps: S101: Manual loading, opening the movable cover, manually placing the circuit board on the top of the transverse plate, and making one of the right-angled vertices of the circuit board contact the two side walls of the right-angled corner.

[0017] S102: Mechanical loading: The circuit board suction structure is moved to the top of the circuit board by the movement of the electric slider, and the pneumatic suction head is controlled to move downward by the electric extension rod. The circuit board is adsorbed by the pneumatic suction head, and then the circuit board is placed between the fixed bracket and the sliding bracket. The fixed bracket and the sliding bracket are adjusted to rotate to move the circuit board to the bottom of the dotting structure.

[0018] S103: Dotting. The horizontal driving structure drives the horizontal frame to move, and the vertical driving structure drives the vertical frame to move, so that the dotting structure moves to the position where the circuit board needs to be dotted. During the movement, the circuit board is inspected by the inspection camera to distinguish good and defective products, and then different colors of ink dots are respectively stamped on the two types of circuit boards through the dotting ink cartridge.

[0019] S104: Unloading: Based on S102, unloading is performed through the loading and unloading structure.

[0020] In summary, the present invention includes at least one of the following beneficial technical effects: 1. This kind of automatic dotting device for testing machine detects the circuit board through the detection camera to distinguish the good and bad circuit boards. At the same time, the detection camera determines the dotting position, and controls the pneumatic rod through the controller to push the sliding sleeve downward to dot the surface of the circuit board. Compared with manual dotting, it can effectively improve the accuracy of dotting; 2. This is an automatic dotting device for a testing machine. During dotting, the air pressure rod pushes the sliding sleeve downward to make the ink dotting head close to the circuit board, and the ink in the bearing chamber is ejected by the inkjet pump to achieve the purpose of dotting the circuit board. The two bearing chambers can store two different colors of ink, and good products and bad products are dotted separately during the dotting process, so as to distinguish good products from bad products in subsequent steps and improve the accuracy of marking; 3. This kind of automatic dotting device for a testing machine controls the movement of the transmission sleeve during the rotation of the transmission screw to achieve the purpose of adjusting the position of the fixed bracket, so that the fixed bracket can be moved to the bottom of the loading and unloading structure, so as to place the circuit board between the fixed bracket and the sliding bracket, and through the setting of the electric telescopic rod, it is used to control the distance between the sliding bracket and the fixed bracket, so that the device can be adapted to circuit boards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an automatic dotting device for a testing machine of the present invention; Figure 2 It is a schematic diagram of the internal structure of an automatic dotting device for a testing machine of the present invention; Figure 3 It is a structural schematic diagram of a test installation platform of an automatic dotting device for a test machine of the present invention; Figure 4 It is a structural schematic diagram of a transverse driving structure and a longitudinal driving structure of an automatic dotting device for a testing machine of the present invention; Figure 5 It is a structural schematic diagram of a loading and unloading structure of an automatic dotting device for a testing machine of the present invention; Figure 6 It is a structural schematic diagram of a dot-marking structure of an automatic dot-marking device for a testing machine of the present invention; Figure 7 It is a structural schematic diagram of an adjustment structure of an automatic dotting device of a testing machine of the present invention; Figure 8 The invention discloses a structural schematic diagram of a dotting ink cartridge of an automatic dotting device of a testing machine.

[0023] In the figure, 1, base; 2, detection camera; 3, protective housing; 4, movable cover; 5, positioning baffle; 6, sliding guide rail; 7, horizontal frame; 71, guide rail groove; 72, clamping groove; 73, linkage rack; 8, horizontal drive structure; 81, dual-axis synchronous motor; 82, horizontal drive gear; 83, extension wire; 9, horizontal guide rail; 10, longitudinal frame; 11, longitudinal drive structure; 111, drive frame; 112, servo motor; 113, longitudinal drive gear; 114, second rack; 12, dotting structure; 121, pneumatic rod; 122, sliding sleeve; 123, sliding sleeve positioning groove; 124, mounting plate; 125, plug-in hole; 126, dotting ink cartridge; 1261, round sleeve; 1262, bearing cavity; 1263, sleeve head; 1264, ink dotting head; 1265 , inkjet pump; 13, test installation platform; 131, positioning slide plate; 132, sliding frame; 133, electric sliding support plate; 134, limit plate; 14, loading and unloading structure; 141, guide plate; 142, support rod; 143, sliding groove; 144, electric slider; 145, control machine; 146, circuit board attraction structure; 1461, positioning plate; 1462, electric extension rod; 1463, synchronization plate; 1464, pneumatic suction head; 147, positioning structure; 1471, horizontal plate; 1472, limit table; 1473, right-angle corner; 1474, limit slide groove; 15, adjustment structure; 151, transmission screw; 152, mounting plate; 153, adjustment motor; 154, transmission sleeve; 155, fixed bracket; 156, sliding bracket; 157, electric telescopic rod. DETAILED DESCRIPTION

[0024] Below, the invention is further described in conjunction with the accompanying drawings and specific embodiments: Embodiment 1:

[0025] Reference Figure 1 - Figure 8The present invention discloses an automatic dotting device for a testing machine, comprising a base 1 and a detection camera 2, characterized in that a protective housing 3 is provided on the outer peripheral wall of the base 1, and movable covers 4 are provided on both sides of the protective housing 3, positioning baffles 5 are provided on both sides of the upper end of the base 1, and sliding guide rails 6 are provided at the corresponding positions of the two positioning baffles 5, the two sliding guide rails 6 are slidably connected with a transverse frame 7 together, and a transverse driving structure 8 is provided at the top of the transverse frame 7, a transverse guide rail 9 is provided on one side of the transverse frame 7, a longitudinal frame 10 is slidably connected to the outer peripheral side of the transverse guide rail 9, a longitudinal driving structure 11 is provided at the top of the longitudinal frame 10, and a dotting structure 12 is provided on the side wall of the longitudinal frame 10, and a test installation platform 13 is provided on the top surface of the base 1 and at a position between the two positioning baffles 5; The test installation platform 13 includes two positioning slides 131, and the two positioning slides 131 are relatively arranged according to the symmetry axis of the base 1. A sliding frame 132 is fixedly installed on the top of the positioning slide 131 by bolts, and an electric sliding support plate 133 is arranged inside the sliding frame 132. Since the sliding frame 132 is connected to the positioning slide 131 by bolts, the distance between the two sliding frames 132 can be adjusted according to the size of the circuit board to be marked, so that the electric sliding support plate 133 corresponds to the two sides of the circuit board. The two electric sliding support plates 133 can be moved synchronously through the controller, and the upper end of the electric sliding support plate 133 is fixedly connected to the limiting plate 134. Both ends of the positioning slide 131 are provided with a loading and unloading structure 14, and an adjustment structure 15 is provided between the two positioning slides 131; The dotting structure 12 includes a pneumatic rod 121 and a sliding sleeve 122. The pneumatic rod 121 is fixedly installed at the bottom end of the longitudinal frame 10, and the sliding sleeve 122 is slidably installed on the side wall of the longitudinal frame 10, and the side wall of the sliding sleeve 122 is provided with a sliding sleeve positioning groove 123, and the interior of the sliding sleeve positioning groove 123 is provided with a guide block fixedly connected to the longitudinal frame 10, the bottom ends of the pneumatic rod 121 and the sliding sleeve 122 are commonly connected to a mounting plate 152124, and the mounting plate 152124 and the bottom end of the sliding sleeve 122 are commonly provided with a plug-in hole 125, a dotting ink cartridge 126 is provided inside the sliding sleeve 122, and the detection camera 2 is fixedly installed on one side of the mounting plate 152124.

[0026] In this embodiment, a control power supply and a controller for controlling each electric component in the control device are arranged inside the base 1; when in use, the movable cover 4 is opened, and the circuit board is manually placed directly below the loading and unloading structure 14, and the circuit board to be detected and dotted is placed inside the adjustment structure 15 through the loading and unloading structure 14, and the circuit board is moved to directly below the dotted structure 12 through the adjustment structure 15, and the electric sliding support plate 133 is moved through the guidance of the sliding frames 132 on both sides, and the two limit plates 134 are respectively pressed against the two sides of the circuit board to achieve the purpose of fixing the circuit board, and because the two The movement of the electric sliding support plate 133 is synchronously controlled by the controller, so when the circuit board is fixed, the circuit board can be located at the center of the symmetry axis of the base 1, which can effectively achieve the effect of determining the position of the circuit board, and the circuit board is inspected by the detection camera 2 to distinguish between good and defective circuit boards. At the same time, the dotting position is determined by the detection camera 2, and the controller controls the pneumatic rod 121 to push the sliding sleeve downward to dot the surface of the circuit board to distinguish between good and defective products and avoid defective products from being used in the next process. Compared with manual dotting, it can effectively improve the accuracy of dotting.

[0027] In a further preferred embodiment of the present invention, Figure 1-8 As shown, the dotting ink cartridge 126 includes a circular sleeve 1261, and two bearing cavities 1262 are arranged inside the circular sleeve 1261. A sleeve head 1263 matching the plug-in hole 125 is arranged at the bottom end of the circular sleeve 1261, and two dotting ink heads 1264 corresponding to the two bearing cavities 1262 are arranged at the bottom end of the sleeve head 1263, and an inkjet pump 1265 is arranged at the top end of the circular sleeve 1261.

[0028] In this embodiment, when dotting, the air pressure rod 121 pushes the sliding sleeve 122 downward to make the ink dotting head 1264 approach the circuit board, and the ink in the bearing cavity 1262 is ejected by the inkjet pump 1265 to achieve the purpose of dotting the circuit board; The two carrying cavities 1262 are provided to store two different colors of ink, and good products and defective products can be marked separately during the marking process, so as to distinguish good products from defective products in subsequent steps and improve the accuracy of marking.

[0029] In a further preferred embodiment of the present invention, Figure 1-8 As shown, both ends of the transverse frame 7 are provided with guide rail grooves 71 slidably matched with the sliding guide rail 6 , and both sides of the sliding guide rail 6 are provided with clamping grooves 72 , and linkage racks 73 are provided inside the clamping grooves 72 .

[0030] In this embodiment, the guide rail groove 71 is provided to connect the transverse frame 7 and the two sliding guide rails 6 to each other, and when the transverse frame 7 and the sliding guide rails 6 are connected to each other, the protrusion inside the guide rail groove 71 will contact the clamping groove 72, thereby improving the stability of the connection between the transverse frame 7 and the sliding guide rails 6 through the clamping groove 72.

[0031] In a further preferred embodiment of the present invention, Figure 1-8 As shown, the transverse driving structure 8 includes a dual-axis synchronous motor 81 , both ends of the motor shaft of the dual-axis synchronous motor 81 are provided with transverse driving gears 82 , the transverse driving gear 82 is meshed with the linkage rack 73 , and an extension wire 83 is provided on one side of the dual-axis synchronous motor 81 .

[0032] In this embodiment, the dual-axis synchronous motor 81 is set to simultaneously control the rotation of the transverse drive gears 82 on both sides, and then cooperate with the linkage rack 73 to achieve the purpose of controlling the movement of the transverse frame 7 at the upper end of the sliding guide rail 6, so as to adjust the longitudinal position of the dotting structure 12.

[0033] In a further preferred embodiment of the present invention, Figure 1-8 As shown, the longitudinal driving structure 11 includes a driving frame 111, which is fixedly mounted on the top of the longitudinal frame 10. A servo motor 112 is arranged inside the longitudinal frame 10, and a longitudinal driving gear 113 is arranged at the motor shaft of the servo motor 112. A second rack 114 is arranged on the top surface of the transverse guide rail 9 at a position corresponding to the longitudinal driving gear 113, and the second rack 114 is meshed with the longitudinal driving gear 113.

[0034] In this embodiment, through the setting of the servo motor 112, the longitudinal driving gear 113 cooperates with the second rack 114 to enable the driving frame 111 to move in the straight direction of the transverse guide rail 9, so as to achieve the effect of adjusting the lateral position of the dotting structure 12, and then cooperate with the transverse driving structure 8 to effectively control the position of the longitudinal frame 10 and the dotting structure 12 in any plane inside the base 1, so as to control the dotting structure 12 to correspond to the position where the circuit board needs to be dotted, thereby achieving the purpose of improving the dotting accuracy.

[0035] In a further preferred embodiment of the present invention, Figure 1-8As shown, the adjustment structure 15 includes a transmission screw 151, both ends of which are rotatably connected to mounting plates 152124 fixedly connected to the base 1, one end of one of the mounting plates 152124 is fixedly installed with an adjustment motor 153, the outer peripheral wall of the transmission screw 151 is sleeved with a transmission sleeve 154, and the transmission sleeve 154 is threadedly matched with the transmission screw 151, one end of the transmission sleeve 154 is fixedly connected to a fixed bracket 155, and the other end is slidably provided with a sliding bracket 156, the fixed bracket 155 and the sliding bracket 156 are both L-shaped, one end of the fixed bracket 155 is provided with an electric telescopic rod 157, and the telescopic end of the electric telescopic rod 157 is fixedly connected to the sliding bracket 156.

[0036] In this embodiment, the transmission screw 151 is installed on the top of the base 1 through the mounting plate 152124, and the transmission screw 151 is controlled to rotate by adjusting the motor 153. When the transmission screw 151 rotates, the transmission sleeve 154 is threadedly matched with the transmission screw 151, and Figure 7 As shown, the bottom end of the transmission sleeve 154 is arranged in a plane, and the bottom plane of the transmission sleeve 154 contacts the bottom surface of the base 1, which can effectively prevent the transmission sleeve 154 from rotating with the transmission screw 151; Furthermore, during the rotation of the transmission screw 151, the transmission sleeve 154 can be effectively controlled to move, so as to achieve the purpose of adjusting the position of the fixed bracket 155, so that the fixed bracket 155 can be moved to the bottom of the loading and unloading structure 14, so as to place the circuit board between the fixed bracket 155 and the sliding bracket 156, so as to control the movement of the circuit board through the adjustment structure 15, and through the setting of the electric telescopic rod 157, it is used to control the distance between the sliding bracket 156 and the fixed bracket 155, so that the device can adapt to circuit boards of different sizes.

[0037] In a further preferred embodiment of the present invention, Figure 1-8 As shown, the loading and unloading structure 14 includes a guide plate 141, and support rods 142 fixedly connected to the base 1 are arranged at the four corners of the guide plate 141. A sliding groove 143 is opened inside the guide plate 141, and an electric slider 144 is arranged inside the sliding groove 143. A control machine 145 is arranged at the top of the electric slider 144, and a circuit board attraction structure 146 is arranged at the bottom end of the electric slider 144. A positioning structure 147 is arranged at the upper end of the base 1 and at the bottom end of the guide plate 141.

[0038] In this embodiment, the positioning structure 147 is provided to position the circuit board during manual loading, so that the circuit board can be directly below the guide plate 141, so that the circuit board attraction structure 146 can adsorb the circuit board. When the circuit board is adsorbed, the control platform 145 provides power to the electric slider 144 so that the electric slider 144 moves inside the sliding groove 143 and the circuit board attraction structure 146 moves to the top of the circuit board.

[0039] In a further preferred embodiment of the present invention, Figure 1-8 As shown, the circuit board attraction structure 146 includes a positioning plate 1461, which is fixedly connected to the bottom end of the electric slider 144, and electric extension rods 1462 are arranged at the four corners of the bottom end of the positioning plate 1461. The bottom ends of the synchronous electric extension rods 1462 are commonly connected to a synchronous plate 1463, and the bottom end of the synchronous plate 1463 is magnetically connected to a plurality of pneumatic attraction heads 1464.

[0040] In this embodiment, when the circuit board suction structure 146 moves to the top of the circuit board, the synchronization plate 1463 is pushed downward by the electric extension block, and the pneumatic suction head 1464 is made to contact with the circuit board. By controlling the air pump provided inside the machine 145, after the lower port of the pneumatic suction head 1464 contacts with the circuit board, a negative pressure is formed on the pneumatic suction head 1464 to achieve the purpose of adsorbing the circuit board. Then, by moving the electric slider 144, the circuit board is moved to above the fixed bracket 155 and the sliding bracket 156, and the circuit board is slowly lowered so that the circuit board is stuck between the fixed bracket 155 and the sliding bracket 156 to achieve the effect of fixing the circuit board.

[0041] In a further preferred embodiment of the present invention, Figure 1-8 As shown, the positioning structure 147 includes a transverse plate 1471, which is fixedly connected to the base 1. The transverse plates 1471 are provided in two groups and are respectively arranged on both sides of the axis of the transmission screw 151. A limiting platform 1472 is provided at the top of the transverse plate 1471. The limiting platform 1472 and the side wall of the positioning slide plate 131 jointly form a right-angle corner 1473, and the top surfaces of the opposite sides of the two limiting platforms 1472 are provided with limiting grooves 1474, and the bottom wall of the limiting groove 1474 is flush with the top wall of the sliding bracket 156.

[0042] In this embodiment, the transverse plate 1471 is used to fix the limit platform 1472, and the limit platform 1472 and the transverse plate 1471 are fixed by bolts, so that the gap between the two limit platforms 1472 can be adjusted according to circuit boards of different sizes, and the right-angle corner 1473 formed between the limit platform 1472 and the positioning slide plate 131 is used to locate the loading position during manual loading. Embodiment 2:

[0043] According to another aspect of the present invention, a marking method for an automatic marking device of a testing machine is provided.

[0044] The dotting method of the automatic dotting device of the testing machine comprises the following steps: S101: Manual loading, opening the movable cover 4, manually placing the circuit board on the top of the horizontal plate 1471, and making one of the right-angled vertices of the circuit board contact the two side walls of the right-angled corner 1473; In this embodiment, the position of the circuit board is initially positioned through manual loading based on S101 so that the circuit board attraction structure 146 can accurately adsorb the circuit board, which can effectively improve the accuracy of the circuit board during mechanical loading and achieve the purpose of improving the dotting accuracy.

[0045] S102: Mechanical loading, the circuit board suction structure 146 is moved to the top of the circuit board by the movement of the electric slider 144, and the pneumatic suction head 1464 is controlled to move downward by the electric extension rod 1462, and the circuit board is adsorbed by the pneumatic suction head 1464, and then the circuit board is placed between the fixed bracket 155 and the sliding bracket 156, and then the rotation of the motor 153 is adjusted to make the fixed bracket 155 and the sliding bracket 156 drive the circuit board to move to the bottom of the dotting structure 12.

[0046] In this embodiment, based on S102, by setting the fixed bracket 155 and the sliding bracket 156, the circuit board can be effectively moved to the bottom of the dotting structure 12, so that the circuit board can quickly approach the dotting structure 12 to facilitate the dotting operation, thereby improving the dotting efficiency. S103: Dotting. The horizontal driving structure 8 drives the horizontal frame 7 to move, and the vertical driving structure 11 drives the vertical frame 10 to move, so that the dotting structure 12 moves to the position where the circuit board needs to be dotted. During the movement, the circuit board is inspected by the inspection camera 2 to distinguish good and defective products, and then different colors of ink dots are respectively applied to the two types of circuit boards through the dotting ink cylinder 126.

[0047] In this embodiment, based on S103, by setting up two carrying cavities 1262 inside the dot ink cartridge 126, two different colors of ink can be stored. When good products and defective products are detected by the detection camera 2, different colors of ink are sprayed on the dotting positions of good products and defective products, so as to distinguish good products from defective products in subsequent work.

[0048] S104: unloading. Based on S102, unloading is performed through the loading and unloading structure 14. When a number of circuit boards are stacked, the circuit boards are taken out manually.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic dotting device for a testing machine, comprising a base (1) and a detection camera (2), characterized in that: A protective housing (3) is provided on the outer peripheral wall of the base (1), and movable covers (4) are provided on both sides of the protective housing (3); positioning baffles (5) are provided on both sides of the upper end of the base (1); sliding guide rails (6) are provided at positions corresponding to the two positioning baffles (5); the two sliding guide rails (6) are slidably connected to a transverse frame (7) together, and a transverse driving structure (8) is provided at the top of the transverse frame (7); a transverse guide rail (9) is provided on one side of the transverse frame (7); a longitudinal frame (10) is slidably connected to the outer peripheral side of the transverse guide rail (9); a longitudinal driving structure (11) is provided at the top of the longitudinal frame (10); a dotting structure (12) is provided on the side wall of the longitudinal frame (10); and a test installation platform (13) is provided on the top surface of the base (1) and at a position between the two positioning baffles (5); The test installation platform (13) includes two positioning slides (131), the two positioning slides (131) are arranged opposite to each other, a sliding frame (132) is fixedly installed on the top of the positioning slide (131) by bolts, an electric sliding support plate (133) is arranged inside the sliding frame (132), and the upper end of the electric sliding support plate (133) is fixedly connected to a limiting plate (134), both ends of the positioning slide (131) are provided with loading and unloading structures (14), and an adjustment structure (15) is arranged between the two positioning slides (131); The dotting structure (12) comprises a pneumatic rod (121) and a sliding sleeve (122), wherein the pneumatic rod (121) is fixedly mounted on the bottom end of the longitudinal frame (10), the sliding sleeve (122) is slidably mounted on the side wall of the longitudinal frame (10), the side wall of the sliding sleeve (122) is provided with a sliding sleeve positioning groove (123), and a guide block fixedly connected to the longitudinal frame (10) is arranged inside the sliding sleeve positioning groove (123), the bottom ends of the pneumatic rod (121) and the sliding sleeve (122) are commonly connected to a mounting plate (152) (124), and the mounting plate (152) (124) and the bottom ends of the sliding sleeve (122) are commonly provided with a plug-in hole (125), a dotting ink cartridge (126) is arranged inside the sliding sleeve (122), and a detection camera (2) is fixedly mounted on one side of the mounting plate (152) (124).

2. The automatic dotting device for a testing machine according to claim 1, characterized in that: The dotting ink cartridge (126) comprises a circular sleeve (1261), two bearing cavities (1262) are arranged inside the circular sleeve (1261), a sleeve head (1263) matching with the plug hole (125) is arranged at the bottom end of the circular sleeve (1261), and two dotting ink heads (1264) corresponding to the two bearing cavities (1262) are arranged at the bottom end of the sleeve head (1263), and an inkjet pump (1265) is arranged at the top end of the circular sleeve (1261).

3. The automatic dotting device for a testing machine according to claim 2, characterized in that: Both ends of the transverse frame (7) are provided with guide rail grooves (71) slidably matched with the sliding guide rail (6), and both sides of the sliding guide rail (6) are provided with clamping grooves (72), and linkage racks (73) are provided inside the clamping grooves (72).

4. The automatic dotting device for a testing machine according to claim 3, characterized in that: The transverse drive structure (8) comprises a dual-axis synchronous motor (81), both ends of the motor shaft of the dual-axis synchronous motor (81) are provided with transverse drive gears (82), the transverse drive gears (82) are meshed with the linkage rack (73), and an extension wire (83) is provided on one side of the dual-axis synchronous motor (81).

5. The automatic dotting device for a testing machine according to claim 4, characterized in that: The longitudinal drive structure (11) comprises a drive frame (111), the drive frame (111) being fixedly mounted on the top of the longitudinal frame (10), a servo motor (112) being arranged inside the longitudinal frame (10), and a longitudinal drive gear (113) being arranged at the motor shaft of the servo motor (112), and a second rack (114) being arranged at a position on the top surface of the transverse guide rail (9) corresponding to the longitudinal drive gear (113), and the second rack (114) being meshed with the longitudinal drive gear (113).

6. The automatic dotting device for a testing machine according to claim 5, characterized in that: The adjustment structure (15) comprises a transmission screw (151), both ends of which are rotatably connected to mounting plates (152) (124) fixedly connected to the base (1), one end of one of the mounting plates (152) (124) being fixedly mounted with an adjustment motor (153), an outer peripheral wall of the transmission screw (151) being sleeved with a transmission sleeve (154), and the transmission sleeve (154) and the transmission screw (151) being threadedly matched, one end of the transmission sleeve (154) being fixedly connected to a fixed bracket (155), and the other end of the transmission sleeve (154) being slidably provided with a sliding bracket (156), the fixed bracket (155) and the sliding bracket (156) both being arranged in an L-shape, one end of the fixed bracket (155) being provided with an electric telescopic rod (157), and the telescopic end of the electric telescopic rod (157) being fixedly connected to the sliding bracket (156).

7. The automatic dotting device for a testing machine according to claim 6, characterized in that: The loading and unloading structure (14) comprises a guide plate (141), support rods (142) fixedly connected to the base (1) are arranged at the four corners of the guide plate (141), a sliding groove (143) is provided inside the guide plate (141), an electric slider (144) is provided inside the sliding groove (143), a control machine (145) is provided at the top of the electric slider (144), a circuit board attraction structure (146) is provided at the bottom of the electric slider (144), and a positioning structure (147) is provided at the upper end of the base (1) and at the bottom end of the guide plate (141).

8. The automatic dotting device for a testing machine according to claim 7, characterized in that: The circuit board attraction structure (146) comprises a positioning plate (1461), the positioning plate (1461) is fixedly connected to the bottom end of the electric slider (144), electric extension rods (1462) are arranged at the four corners of the bottom end of the positioning plate (1461), the bottom ends of the synchronous electric extension rods (1462) are commonly connected to a synchronization plate (1463), and the bottom end of the synchronization plate (1463) is magnetically connected to a plurality of pneumatic attraction heads (1464).

9. The automatic dotting device for a testing machine according to claim 8, characterized in that: The positioning structure (147) comprises a transverse plate (1471), the transverse plate (1471) being fixedly connected to the base (1), the transverse plate (1471) being provided with two groups, and being respectively provided on both sides of the axis of the transmission screw (151), a limiting platform (1472) being provided at the top end of the transverse plate (1471), the limiting platform (1472) and the side wall of the positioning slide plate (131) jointly forming a right-angle corner (1473), and limiting grooves (1474) being provided on the top surfaces of the opposite sides of the two limiting platforms (1472), and the bottom wall of the limiting groove (1474) is flush with the top wall of the sliding bracket (156).

10. A dot marking method for an automatic dot marking device of a testing machine, characterized in that: An automatic dotting device for a testing machine used in claims 1-9 comprises the following steps: S101: Manual loading, opening the movable cover, manually placing the circuit board on the top of the horizontal plate, and making one of the right angle vertices of the circuit board contact with the two side walls of the right angle corner (1473); S102: Mechanical loading, by moving the electric slider (144), the circuit board suction structure (146) is moved to the top of the circuit board, and the electric extension rod (1462) is used to control the pneumatic suction head (1464) to move downward, and the pneumatic suction head (1464) adsorbs the circuit board, and then the circuit board is placed between the fixed bracket (155) and the sliding bracket (156), and then the fixed bracket (155) and the sliding bracket (156) are driven by the rotation of the motor (153) to move the circuit board to the bottom of the dotting structure (12); S103: Dotting, the transverse driving structure (8) drives the transverse frame (7) to move, and the longitudinal driving structure (11) drives the longitudinal frame (10) to move, so that the dotting structure (12) moves to the position where the circuit board needs to be dotted, and during the movement, the circuit board is inspected by the inspection camera (2) to distinguish good products from defective products, and then the two types of circuit boards are respectively dotted with different colors of ink by the dotting ink cylinder (126); S104: Unloading, based on S103, unloading is performed through the loading and unloading structure (14).

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