Double-rail automatic cover pulling machine

Abstract

The invention relates to the technical field of PCB production, in particular to a double-track automatic cover pulling machine which comprises a rack, a feeding mechanism, a suction mechanism and at least two clamping jaw mechanisms are installed on an inner platform of the rack, and the clamping jaw mechanisms are arranged above the feeding mechanism through a three-dimensional driving mechanism; wherein the three-dimensional driving mechanism comprises a mounting frame, and the side face of the mounting frame is fixedly connected with the clamping jaw mechanism, the visual inspection mechanism and the light supplementing assembly; each light supplementing assembly comprises a connecting frame and a light supplementing lamp, the connecting frame and the light supplementing lamp are detachably connected through a connecting structure, the connecting structure is further used for adjusting the light supplementing angle of the light supplementing lamp, light supplementing assemblies are further arranged on the two sides of the visual detection mechanism, and the light supplementing lamp and the connecting frame are rotationally connected through the connecting structure. On one hand, the connecting structure can adjust the light supplementing angle of the light supplementing lamp, and on the other hand, the connecting structure can be unlocked.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PCB production, and in particular to a double-track automatic cover pulling machine. BACKGROUND

[0002] The circuit board is also called a PCB cover plate, and is a cover-shaped or sheet-shaped structure installed above a specific area of a PCB or a component, which plays a role of protection, isolation, enhancement and heat dissipation, and the cover plate can be removed by a mechanical clamp when the component is detected.

[0003] Most of the cover plates of PCB components are too small, so that the positioning of the mechanical clamp is poor, affecting the cover pulling efficiency, and the application provides a double-track automatic cover pulling machine, which can improve the cover pulling accuracy through visual camera positioning, and can avoid missing through the cooperation of the inductor and the material cover, and the double-track device can reduce the in-out plate time, so that the efficiency is improved. SUMMARY

[0004] The application aims to solve the problem of poor positioning of the mechanical clamp in the prior art, and provides a double-track automatic cover pulling machine.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: A double-track automatic cover pulling machine is designed, which comprises a rack, a feeding mechanism, a material suction mechanism and at least two clamp mechanisms are installed on the inner platform of the rack, and the clamp mechanisms are arranged above the feeding mechanism through a three-dimensional driving mechanism; The three-dimensional driving mechanism comprises a mounting frame, and the clamp mechanism, a visual detection mechanism and a light supplementing assembly are fixedly connected to the side surface of the mounting frame; The light supplementing assembly comprises a connecting frame and a light supplementing lamp, the connecting frame and the light supplementing lamp are detachably connected through a connecting structure, and the connecting structure is also used for adjusting the light supplementing angle of the light supplementing lamp.

[0006] Further, the three-dimensional driving mechanism further comprises an X-axis track assembly and a Y-axis track assembly, the X-axis track assembly and the Y-axis track assembly are both fixedly connected to the inner platform of the rack, and the X-axis track assembly and the Y-axis track assembly are connected, and are used for driving the clamp mechanism to move along the X and Y axes.

[0007] Further, the three-dimensional driving mechanism further comprises a Z-axis track assembly, the Z-axis track assembly comprises a motor, the motor is correspondingly arranged with the clamp mechanism and is fixedly connected to the side surface of the mounting frame, the shaft end of the motor is fixedly connected with a lead screw, and the free end of the lead screw is rotatably connected with a support plate fixedly connected to the side surface of the mounting frame.

[0008] Further, the clamping jaw mechanism comprises a sliding block, a connecting rod and a clamping jaw, the sliding block is in sliding connection with the side of the mounting frame and is in threaded connection with the lead screw, the end of the sliding block is rotationally connected with the connecting rod, the free end of the connecting rod is in sliding connection with the support plate, and the free end of the connecting rod is further fixedly connected with the clamping jaw.

[0009] Further, the back side of the support plate is fixedly connected with a first driving assembly, the bottom end of the connecting rod is connected with the acting end of the first driving assembly through a circumferential locking structure, and the first driving assembly is used for driving the clamping jaw to rotate.

[0010] Further, the visual detection mechanism is fixedly connected to the front side of the support plate.

[0011] Further, the material suction mechanism comprises a second driving assembly, a material receiving pipe and a material suction box, the material receiving pipe is in negative pressure connection with the material suction box, the inlet end of the material receiving pipe is connected with the acting end of the second driving assembly and is placed below the clamping jaw, and the material receiving pipe is a flexible pipe.

[0012] Further, the connecting structure comprises a connecting piece, the connecting frame is in U-shaped structure and is fixedly connected to the bottom of the mounting frame on both sides, the connecting piece is in T-shaped structure in cross section, the rod-shaped part of the connecting piece penetrates through the connecting frame and is movably inserted into the side cavity of the light supplement lamp shell. The connecting piece is circumferentially locked with the connecting frame through a protruding structure, and the annular protruding part of the connecting piece is in abutment with the side wall of the connecting frame.

[0013] Further, the rod-shaped part of the connecting piece is in hollow structure, and the end part of the rod-shaped part is formed with a plurality of elastic parts through a deformation groove, one of the elastic parts is located on the outer wall of the movable end and is provided with a stop part corresponding to the opening of the light supplement lamp cavity, and the stop part is in abutment with the inner wall of the light supplement lamp cavity.

[0014] Further, the inner wall of the cavity on both sides of the light supplement lamp is provided with a plurality of positioning protrusions along the half circle of the penetrating hole, the outer wall of the acting end of the elastic part has at least one protruding part, the positioning protrusion is located between the two protruding parts, and the positioning protrusion is in sliding abutment with the protruding part.

[0015] The double-track automatic cover pulling machine has the advantages that the clamping jaw mechanism is driven to move along the X, Y and Z axes through the three-dimensional driving mechanism, the clamping jaw mechanism can cooperate with the feeding mechanism and the visual detection mechanism to pull the cover on the PCB in multiple positions, has faster working speed and more accurate clamping force than workers, and effectively improves the detection efficiency. The visual detection mechanism is also provided with light supplement assemblies on both sides, which can provide appropriate light source to form uniform and soft diffuse reflection light, significantly reduce shadows and make image details clearer. The light supplement lamp and the connecting frame are rotationally connected through the connecting structure, which can adjust the light supplement angle of the light supplement lamp and can also unlock the connecting structure to realize the function of disassembling and replacing or maintaining the light supplement lamp. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the present application; Figure 2 It is a structural schematic view of the feeding mechanism of the present application; Figure 3 It is a structural schematic view of the Y-axis track assembly of the present application; Figure 4 It is a structural schematic view of the X-axis track assembly of the present application; Figure 5 It is a structural schematic view of the Z-axis track assembly of the present application; Figure 6 It is a structural schematic view of the A area of the present application; Figure 5 It is a structural schematic view of the B area of the present application; Figure 7 It is a structural schematic view of the first driving assembly of the present application; Figure 8 It is a structural schematic view of the connecting structure of the present application; Figure 9 It is a structural schematic view of the B area of the present application; Figure 8

[0017] In the figure: 1, frame; 2, feeding mechanism; 3, suction mechanism; 31, second driving assembly; 32, material receiving pipe; 33, suction box; 4, clamping jaw mechanism; 41, sliding block; 42, connecting rod; 43, clamping jaw; 44, first driving assembly; 45, circumferential locking structure; 5, three-dimensional driving mechanism; 51, mounting frame; 52, X-axis track assembly; 53, Y-axis track assembly; 54, Z-axis track assembly; 541, motor; 542, screw rod; 55, support plate; 6, visual detection mechanism; 7, light supplement assembly; 71, connecting frame; 72, light supplement lamp; 8, connecting structure; 81, connecting piece; 82, protruding structure; 83, deformation groove; 84, elastic part; 85, stop part; 86, positioning protrusion; 87, protruding part. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0019] Reference​Figures 1-9 A double-track automatic cover pulling machine comprises a rack 1, a feeding mechanism 2, a suction mechanism 3 and at least two clamping jaw mechanisms 4 are installed on the inner platform of the rack 1, and the clamping jaw mechanisms 4 are arranged above the feeding mechanism 2 through a three-dimensional driving mechanism 5; Wherein, the three-dimensional driving mechanism 5 comprises a mounting frame 51, and the clamping jaw mechanisms 4, a visual detection mechanism 6 and a light supplementing assembly 7 are fixedly connected to the side of the mounting frame 51; The light supplementing assembly 7 comprises a connecting frame 71 and a light supplementing lamp 72, and the connecting frame 71 and the light supplementing lamp 72 are detachably connected through a connecting structure 8, and the connecting structure 8 is also used for adjusting the light supplementing angle of the light supplementing lamp 72.

[0020] It should be noted that, as shown in Figure 2 The feeding mechanism 2 mainly comprises a motor, a blocking cylinder, a lifting unit, a screw rod width adjusting assembly and a flat belt, wherein: the motor is used to drive the PCB moving box and the screw rod width adjusting assembly to automatically adjust the track; the top plate mechanism is used to clamp the PCB, and when the product flows in, the in-place blocking block is positioned, the lifting mechanism is lifted to clamp the PCB, and the mini air clamp is driven by the clamping device to clamp the material cover.

[0021] The three-dimensional driving mechanism 5 further comprises an X-axis track assembly 52 and a Y-axis track assembly 53, both of which are fixedly connected to the inner platform of the rack 1, and the X-axis track assembly 52 is connected with the Y-axis track assembly 53, and is used to drive the clamping jaw mechanisms 4 to move along the X and Y axes.

[0022] The three-dimensional driving mechanism 5 further comprises a Z-axis track assembly 54, which comprises a motor 541, the motor 541 is correspondingly arranged with the clamping jaw mechanisms 4 and is fixedly connected to the side of the mounting frame 51, the shaft end of the motor 541 is fixedly connected with a screw rod 542, and the free end of the screw rod 542 is rotatably connected with a support plate 55 fixedly connected to the side of the mounting frame 51.

[0023] Referring to Figure 1 , 3 , 4, 5, the three-dimensional driving mechanism 5 is a three-dimensional coordinate system slide rail in the prior art, which is used to drive the clamping jaw mechanisms 4 and the visual detection mechanism 6 to move vertically at multiple positions in the X, Y and Z three-axis space and then to pull the cover at multiple positions, and the specific structure is not described here.

[0024] The clamping jaw mechanism 4 comprises a sliding block 41, a connecting rod 42 and a clamping jaw 43, the sliding block 41 is in sliding connection with the side of the mounting frame 51 and is in screw connection with the lead screw 542, the end of the sliding block 41 is rotationally connected with the connecting rod 42, the free end of the connecting rod 42 is in sliding connection with the supporting plate 55, and the free end of the connecting rod 42 is further fixedly connected with the clamping jaw 43.

[0025] With reference to Figure 5 It can be known that the motor 541 drives the lead screw 542 to rotate synchronously, the lead screw 542 drives the sliding block 41 to ascend and descend through the cooperation of the connecting rod 42, and the sliding block 41 drives the clamping jaw 43 to ascend and descend synchronously in the ascending and descending process because of the connection with one end of the connecting rod 42. It is worth mentioning that the two clamping jaws 43 are driven and clamped by air, liquid or mechanical methods, and the two clamping jaws 43 ascend and descend and open and close separately, and the specific connection mode of the clamping jaw 43 is not improved, and the connection structure is the prior art which will not be described in detail. Specifically, the two clamping jaws 43 adopt a lifting and descending device, when one clamping jaw 43 clamps the material cover and lifts up, the receiving pipe 32 moves to the lower side of the clamping jaw 43 to clamp the material, and the other clamping jaw 43 descends to clamp the material cover, and the clamping jaw 43 can rotate at different angles to clamp material covers at different angles, and the material cover in the receiving pipe 32 is sucked into the storage by the lower suction box 33.

[0026] The back side of the supporting plate 55 is fixedly connected with a first driving assembly 44, the bottom end of the connecting rod 42 is connected with the acting end of the first driving assembly 44 through a circumferential locking structure 45, and the first driving assembly 44 is used for driving the clamping jaw 43 to rotate.

[0027] With reference to Figure 6 It can be known that the first driving assembly 44 comprises a motor, a synchronous belt and two synchronous wheels, the circumferential locking structure 45 comprises a limiting pin and a limiting groove, one of the synchronous wheels is fixedly connected with the limiting pin on the inner wall of the shaft hole, and the connecting rod 42 is provided with the limiting groove on the outer wall, and the synchronous wheel is sleeved on the end of the connecting rod 42, so that the limiting pin is in sliding connection with the limiting groove. Specifically, the other synchronous wheel is fixedly connected with the shaft end of the motor, the synchronous belt is sleeved between the two synchronous wheels, and the end surface of the mounting frame 51 is provided with a through groove for connecting the synchronous belt. More specifically, the sliding block 41 drives the clamping jaw 43 to ascend and descend through the connecting rod 42, and the connecting rod 42 and the synchronous wheel are circumferentially locked and in sliding connection through the circumferential locking structure 45, so as to avoid clamping and not affect the transmission effect of the motor.

[0028] The visual detection mechanism 6 is fixedly connected to the front side of the supporting plate 55.

[0029] It needs to be added that the visual detection mechanism 6 includes a visual detection lens and a detection unit, the visual detection lens is fixedly connected to the front side of the support plate 55 through a support frame, and the visual detection lens and a plurality of motors, clamping jaws, light supplement lamps and other components are connected with the detection unit, which are uniformly controlled and adjusted by the detection unit. The present application does not improve the specific connection structure, so they are all prior art and will not be described here. Among them, the visual detection lens is various, for example, Computar's M3Z series, MP series and KOWA's LM12JC10M series, which can be used as long as the focal length, precision and field size and other parameters meet the actual operation needs, and will not be described here.

[0030] The suction mechanism 3 includes a second driving assembly 31, a material receiving pipe 32 and a suction box 33, the material receiving pipe 32 is connected with the suction box 33 in negative pressure, the feeding end of the material receiving pipe 32 is connected with the acting end of the second driving assembly 31 and is placed below the clamping jaw 43, and the material receiving pipe 32 is a flexible pipe.

[0031] Referring to Figure 1 and 6 It can be seen that the second driving assembly 31 is composed of a motor, a synchronous belt, two synchronous wheels and a moving frame, the two synchronous wheels are rotatably connected to the side of the mounting frame 51, the motor is fixedly connected to the other side of the mounting frame 51, and the motor shaft end is fixedly connected with one of the synchronous wheels, the synchronous belt is sleeved between the two synchronous wheels, and the bottom end of the synchronous belt is fixedly connected with the moving frame. The moving frame is fixed with the suction end of the material receiving pipe 32, that is, the material receiving pipe 32 can be driven to move below the rising clamping jaw 43, and cooperate with the suction box 33 and the negative pressure device to suck the material.

[0032] The connecting structure 8 includes a connecting piece 81, the connecting frame 71 is in U-shaped structure and is fixedly connected to the bottom of the mounting frame 51 on both sides, and the connecting piece 81 is in T-shaped structure in cross section, and the rod-shaped part penetrates through the connecting frame 71 and is movably inserted into the side cavity of the light supplement lamp 72 housing; Among them, the connecting piece 81 is locked in the circumferential direction with the connecting frame 71 through the protruding structure 82, and the ring protruding part of the connecting piece 81 abuts against the side wall of the connecting frame 71.

[0033] The rod-shaped part of the connecting piece 81 is in hollow structure, and a plurality of elastic parts 84 are formed at the end part through the deformation groove 83, one of the elastic parts 84 is located at the outer wall of the movable end and is provided with a stop part 85 corresponding to the cavity opening of the light supplement lamp 72, and the stop part 85 abuts against the inner wall of the cavity of the light supplement lamp 72.

[0034] The supplementary light 72 has several positioning protrusions 86 distributed along the half-circumference of the through hole on the inner wall of the cavity on both sides of the housing. The outer wall of the working end of the elastic part 84 has at least one protrusion 87. The positioning protrusion 86 is placed between two of the protrusions 87, and the positioning protrusion 86 slides against the protrusions 87.

[0035] In this embodiment, supplementary lights 72 are arranged on both sides of the visual inspection mechanism 6, as shown in the reference. Figure 8 , 9 It can be seen that the fill light 72 is set in the recessed part at the bottom of the connecting frame 71, and the fill light 72 is connected to and rotates with the connecting frame 71 through the connector 81; Specifically, the connecting frame 71 is preferably made of a material with deformation capabilities such as rubber or plastic. In actual operation, when the connecting frame 71 corresponds to the through hole between the supplementary light 72, the rod-shaped part of the connecting piece 81 can be movably inserted into the cavity on both sides of the housing of the supplementary light 72 through the through hole. Among them, the end of the protrusion 87 is arc-shaped, and the side of the stop 85 is provided with a guide slope. The arc-shaped structure and the guide slope are used to reduce the friction generated when the connector 81 comes into contact with the connecting frame 71 and the housing of the fill light 72, so that the movable end of the elastic part 84 can deform better when subjected to force, thereby driving several protrusions 87 and stop 85 to pass through the cavity of the fill light 72. It should be noted that the protrusion 87 abuts and causes the movable end of the elastic part 84 to deform slightly. This deformation is not enough to cause the stop part 85 to separate from the inner wall of the supplementary light 72. It is necessary to push the stop part 85 to unlock it when the movable end of the elastic part 84 deforms more significantly by using a finger or tool. The connecting frame 71 has recesses on both sides at the through holes. After the connecting piece 81 is inserted, the protruding structure 82 engages in the recesses to lock the connecting piece 81 circumferentially. The stop part 85 abuts against the side wall of the fill light 72 housing to fix the connecting piece 81. More specifically, such as Figure 9 As shown, the positioning protrusion 86 is placed between the two protrusions 87, and the angle adjustment and positioning function are achieved between the protrusions 87 and the positioning protrusion 86 through the frictional force generated by rotation. It is worth mentioning that the top of the housing of the fill light 72 has an opening that connects to the internal cavity. This opening can be used to unlock the stop part 85. When the fill light 72 is rotated to a certain angle, the stop part 85 can be deformed through this opening. After the stop part 85 is deformed, it can be pulled out to drive the connector 81 to separate from the fill light 72.

[0036] Specific working mode: the motor cooperates with the lead screw and guide rod to automatically adjust the width of the track, and then the feeding mechanism 2 is used to convey the PCB, and the top plate mechanism is used to clamp the PCB when the PCB is conveyed to a certain position; Then, the three-dimensional driving mechanism 5 drives the mounting frame 51 to move in the three-dimensional coordinate system in cooperation with the at least two jaw mechanisms 4 to pull the cover, wherein the motor 541 drives the lead screw 542 to rotate, and then the sliding block 41 cooperates with the connecting rod 42 and the jaw 43 to lift, and in the lifting process, the connecting rod 42 and the first driving assembly 44 are connected through the circumferential locking structure 45 and kept circumferential locking, and the first driving assembly 44 is used to drive the jaw 43 to lift; The two jaws 43 are lifted one after another, and in the lifting process, the receiving pipe 32 moves to the lower side of the lifting jaw 43 under the action of the second driving assembly 31, cooperates with the receiving box 33 and the negative pressure device to suck the cover, and reciprocating operation can pull the cover; Finally, when the angle of the light supplement lamp 72 needs to be adjusted, the light supplement lamp 72 can be directly rotated, when the light supplement lamp 72 rotates, the positioning protrusion 86 is in contact with the protruding part 87, the protruding part 87 is forced to drive the elastic part 84 to deform slightly, and the positioning protrusion 86 and the protruding part 87 are in contact to generate friction to realize the positioning effect of the light supplement lamp 72; When the light supplement lamp 72 needs to be disassembled, the stop part 85 is pushed and pressed through the cavity opening, the stop part 85 is forced to drive the elastic part 84 to deform greatly, and when the stop part 85 is separated from the inner wall of the shell of the light supplement lamp 72, the connecting piece 81 can be directly pulled out.

[0037] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dual-track automatic cap-removing machine, comprising a frame (1), characterized in that: A feeding mechanism (2), a suction mechanism (3), and at least two gripper mechanisms (4) are installed on the internal platform of the frame (1). The gripper mechanisms (4) are arranged above the feeding mechanism (2) via a three-dimensional driving mechanism (5). The three-dimensional driving mechanism (5) includes a mounting frame (51), and the gripper mechanism (4), the visual inspection mechanism (6), and the supplementary lighting component (7) are fixedly connected to the side of the mounting frame (51). The supplementary lighting component (7) includes a connecting frame (71) and a supplementary light (72). The connecting frame (71) and the supplementary light (72) are detachably connected by a connecting structure (8). The connecting structure (8) is also used to adjust the supplementary lighting angle of the supplementary light (72).

2. The dual-track automatic cap-removing machine according to claim 1, characterized in that: The three-dimensional driving mechanism (5) also includes an X-axis track assembly (52) and a Y-axis track assembly (53). The X-axis track assembly (52) and the Y-axis track assembly (53) are both fixedly connected to the internal platform of the frame (1). The X-axis track assembly (52) and the Y-axis track assembly (53) are connected to drive the gripper mechanism (4) to move along the X and Y axes.

3. The dual-track automatic cap-removing machine according to claim 2, characterized in that: The three-dimensional drive mechanism (5) further includes a Z-axis track assembly (54), which includes a motor (541). The motor (541) is correspondingly arranged with the gripper mechanism (4) and fixedly connected to the side of the mounting frame (51). A lead screw (542) is fixedly connected to the shaft end of the motor (541), and the free end of the lead screw (542) is rotatably connected to a support plate (55) fixedly connected to the side of the mounting frame (51).

4. A dual-track automatic cap-removing machine according to claim 3, characterized in that: The gripper mechanism (4) includes a slider (41), a connecting rod (42), and a gripper (43). The slider (41) is slidably connected to the side of the mounting bracket (51) and threadedly connected to the lead screw (542). The end of the slider (41) is rotatably connected to the connecting rod (42). The free end of the connecting rod (42) is slidably connected to the support plate (55). The free end of the connecting rod (42) is also fixedly connected to the gripper (43).

5. A dual-track automatic cap-removing machine according to claim 4, characterized in that: The support plate (55) is fixedly connected to the back side of a first drive assembly (44). The bottom end of the connecting rod (42) is connected to the working end of the first drive assembly (44) through a circumferential locking structure (45). The first drive assembly (44) is used to drive the gripper (43) to rotate.

6. A dual-track automatic cap-removing machine according to claim 3, characterized in that: The visual inspection mechanism (6) is fixedly connected to the front side of the support plate (55).

7. A dual-track automatic cap-removing machine according to claim 4, characterized in that: The material suction mechanism (3) includes a second drive assembly (31), a receiving pipe (32), and a suction box (33). The receiving pipe (32) is negatively connected to the suction box (33). The feeding end of the receiving pipe (32) is connected to the working end of the second drive assembly (31) and placed below the gripper (43). The receiving pipe (32) is a flexible tube.

8. A dual-track automatic cap-removing machine according to claim 1, characterized in that: The connection structure (8) includes a connector (81), the connecting frame (71) is U-shaped and fixedly connected to the bottom sides of the mounting frame (51), the connector (81) has a T-shaped cross-section, and its rod-shaped part passes through the connecting frame (71) and is movably inserted into the side cavity of the fill light (72) housing; The connector (81) is circumferentially locked to the connecting frame (71) by a protruding structure (82), and the annular protrusion of the connector (81) abuts against the side wall of the connecting frame (71).

9. A dual-track automatic cap-removing machine according to claim 8, characterized in that: The rod-shaped part of the connector (81) has a hollow structure, and its end has a plurality of elastic parts (84) formed by deformation groove (83). One of the elastic parts (84) has a stop part (85) on the outer wall of the movable end that corresponds to the cavity opening of the fill light (72). The stop part (85) abuts against the inner wall of the cavity of the fill light (72).

10. A dual-track automatic cap-removing machine according to claim 9, characterized in that: The supplementary light (72) has several positioning protrusions (86) distributed along the half-circumference of the through hole on the inner wall of the cavity on both sides of the housing. The outer wall of the working end of the elastic part (84) has at least one protrusion (87). The positioning protrusion (86) is placed between two of the protrusions (87), and the positioning protrusion (86) slides against the protrusion (87).

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