Conveying mechanism and conveying method for circuit board production

Abstract

The invention discloses a conveying mechanism and a conveying method for circuit board production, and relates to the technical field of circuit board production, the conveying mechanism comprises a conveying part, a controller and a combination part, and the combination part is used for pre-combining a substrate and a PP sheet; the material placing part is used for placing PP sheets stacked layer by layer; the first material taking part is used for taking the substrate on the conveying line to the combination part; the second material taking part is used for taking the PP sheets on the material placing part onto the combination part; and the tidying part is used for tidying the stacked substrates and the PP sheets until the edges are aligned. According to the automatic combination device, PP sheets stacked layer by layer can be taken out one by one and combined with a base plate, pre-separation is conducted in an advanced bending mode in the taking process, meanwhile, the buckling resistance is improved, then the combined plates are aligned through the arrangement component, then combination operation is conducted through the combination component, and therefore automatic combination operation of the PP sheets and the base plate is achieved; manual operation is not needed, and the working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board production, in particular to a conveying mechanism and conveying method for circuit board production. BACKGROUND

[0002] Printed circuit boards provide mechanical support and connectivity for electronic components, especially for integrating chips or other electronic components together to form complete electronic devices or systems. When designing and manufacturing circuit boards, multiple key factors need to be considered, including signal integrity, power management, and heat dissipation performance. The structural design of circuit boards is usually compact, often using multi-layer layout to support complex circuit connections and high-speed signal transmission, while optimizing design to reduce electromagnetic interference. In the manufacturing process, the lamination process is a crucial step, mainly used to stack and combine circuit layers and insulating materials with different functions in a specific order, ensuring the performance and reliability of the packaging board. Currently, the lamination process is usually completed by a dedicated laminator for this critical pressing process, and before lamination, the layers of boards need to be neatly stacked.

[0003] The existing multi-layer board stacking process is usually achieved manually or assisted by automated equipment in some processes. For example, a packaging board multi-layer pressing process and device based on ultrasonic assistance (publication number CN118973155B) is disclosed in the prior art. In this scheme, copper foil is directly used for stacking, and cutting is performed after stacking to overcome the problem of soft copper foil, making stacking more convenient. However, in this scheme, the multi-layer board stacking needs to go through a pretreatment operation, i.e., the PP sheet and the substrate are combined.

[0004] The combination of the PP sheet and the substrate in the prior art is usually done manually. The operator needs to manually stack two PP sheets on the upper and lower sides of the substrate and perform an incomplete hot melting operation after alignment to make the PP sheet adhere to the substrate. However, due to the softness of the PP sheet, its smooth surface and static electricity between them, manual operation is inconvenient and inefficient. The technical pain point of automatic operation is that the stacked PP sheet is easily lifted by static electricity or air suction when taken, and falls back down after being detached, which can cause the PP sheet to fold and affect subsequent material taking operations. SUMMARY

[0005] The present application aims to provide a conveying mechanism and conveying method for circuit board production to solve the problem of mutual disturbance caused by the softness of the PP sheet and the stacking state when taking.

[0006] To solve the above technical problems, the technical solution adopted by the present application is:

[0007] The application discloses a conveying mechanism for circuit board production, which comprises a conveying component, a controller and a combination component used for pre-combining a substrate with a PP sheet; further comprising: a feeding component arranged at a middle position on one side of the conveying component and used for placing the PP sheets stacked layer by layer; a first material taking component used for taking the substrate on the conveying line to the combination component; a second material taking component used for taking the PP sheet on the feeding component to the combination component; a arranging component used for arranging the stacked substrate and the PP sheet until the edges are aligned; the second material taking component comprises a first servo module fixedly connected between an extension frame and a frame body of the conveying component, a movable end of the first servo module is fixedly connected with a second servo module, a movable end of the second servo module is fixedly connected with a mounting plate, a plurality of suction cups are arranged at the bottom of the mounting plate and communicated with an external vacuum pump through a pipeline and a solenoid valve; the feeding component comprises a supporting block, a limiting frame is fixedly connected to the top of the supporting block, a load plate is fixedly connected to a middle position in the limiting frame, two feeding plates are symmetrically and slidably connected between the inner walls of the limiting frame, a plurality of telescopic rods are fixedly connected between the feeding plates and the supporting block, and a first spring is sleeved on the outer portion of each telescopic rod.

[0008] By arranging the second material taking component, the PP sheets stacked layer by layer can be taken out one by one and combined with the substrate, the arranged plate material is aligned by the arranging component, and the combination component is used for combination operation, so that the automatic combination operation of the PP sheet and the substrate is realized, manual operation is not needed, and the work efficiency is greatly improved.

[0009] Further improvement of the technical scheme of the application is that the second material taking component further comprises a fixing frame fixedly connected to a middle position of the bottom surface of the mounting plate, a jacking cylinder is fixedly installed at the bottom of the mounting plate, a piston rod of the jacking cylinder extends above the mounting plate and is fixedly connected with a lifting frame, a gas guide pipe is fixedly connected to four corners of the lifting frame, the bottom of the gas guide pipe extends below the mounting plate through a through hole on the mounting plate and is fixedly connected with a rotary joint (the rotation angle range is limited, and the rotation shaft is a damping rotation shaft), four suction cups are connected to one end of the rotary joint away from the gas guide pipe, and the other two suction cups are fixedly installed on the bottom of the fixing frame; two pressing frames are fixedly connected to the lifting frame, a roller frame is fixedly connected to the bottom of each pressing frame, a pressing roller is installed in the roller frame, four reset plates corresponding to the rotary joints are fixedly connected to the bottom of the lifting frame, a semicircular groove is formed in the bottom of each reset plate, an arc surface is formed in one end of the rotary joint and used in cooperation with the semicircular groove, so that after the lifting frame is reset, the rotary joint is reset upward, the semicircular groove and the arc surface on the rotary joint are extruded and matched to reset the rotary joint, and the corresponding suction cup is adjusted downward.

[0010] The technical scheme is characterized in that the pressure roller is arranged to be actively pressed down during the material taking process, so that the PP sheet is bent downward on both sides and presents a C-shaped structure with the opening downward; specifically, the suction cups of the rotary joint rotating part and the suction cups at the bottom of the fixed frame are flush and are in contact with the PP sheet, and the suction cups are controlled to be vacuumized by the electromagnetic valve to suck the PP sheet, so that the PP sheet is fixed by the six suction cups; further, the piston rod is retracted by controlling the operation of the jacking cylinder (the piston rod is initially in the extended state), so that the lifting frame is moved downward, the pressure frame is moved downward, the pressure roller is pressed downward, the PP sheet is bent downward on both sides under the downward pressure, and the PP sheet presents a C-shaped structure with the opening downward, so as to increase the structural strength of the PP sheet.

[0011] The further improvement of the technical scheme is that the pressure frame comprises two second sliding rods, the second sliding rods are slidingly connected to the top of the mounting plate, the top of the second sliding rod is fixedly connected to the lifting frame, the bottom of the second sliding rod extends below the mounting plate and is fixedly connected to a bracket, and the roller frame is fixedly connected to the bottom of the bracket; the two sides of the roller frame are symmetrically slidingly connected to adjusting blocks, the pressure roller is rotatably connected between the sides of the two adjusting blocks close to each other, one side of the adjusting block is fixedly connected to a limiting rod, and the end of the limiting rod away from the adjusting block extends to the outside of the roller frame, and the outside of the limiting rod is sleeved with a second spring.

[0012] The technical scheme is characterized in that the pressure roller is arranged to be actively pressed down during the material taking process, so that the PP sheet is bent downward on both sides and presents a C-shaped structure with the opening downward; specifically, the suction cups of the rotary joint rotating part and the suction cups at the bottom of the fixed frame are flush and are in contact with the PP sheet, and the suction cups are controlled to be vacuumized by the electromagnetic valve to suck the PP sheet, so that the PP sheet is fixed by the six suction cups; further, the piston rod is retracted by controlling the operation of the jacking cylinder (the piston rod is initially in the extended state), so that the lifting frame is moved downward, the pressure frame is moved downward, the pressure roller is pressed downward, the PP sheet is bent downward on both sides under the downward pressure, and the PP sheet presents a C-shaped structure with the opening downward, so as to increase the structural strength of the PP sheet.

[0013] The further improvement of the technical scheme is that the telescopic rod comprises a hollow column fixedly connected to the top of the supporting block, a piston plate slidingly connected between the inner walls of the hollow column, a supporting rod fixedly connected to the top of the piston plate, the supporting rod being fixedly connected to the discharging plate, an exhaust pipe arranged on one side of the hollow column, an air inlet pipe connected to the middle position of the exhaust pipe, and a one-way valve arranged in the inside of the air inlet pipe and the exhaust pipe, the pipe diameter of the air inlet pipe being smaller than that of the exhaust pipe.

[0014] The technical scheme is characterized in that the pressure roller is arranged to be actively pressed down during the material taking process, so that the PP sheet is bent downward on both sides and presents a C-shaped structure with the opening downward; specifically, the suction cups of the rotary joint rotating part and the suction cups at the bottom of the fixed frame are flush and are in contact with the PP sheet, and the suction cups are controlled to be vacuumized by the electromagnetic valve to suck the PP sheet, so that the PP sheet is fixed by the six suction cups; further, the piston rod is retracted by controlling the operation of the jacking cylinder (the piston rod is initially in the extended state), so that the lifting frame is moved downward, the pressure frame is moved downward, the pressure roller is pressed downward, the PP sheet is bent downward on both sides under the downward pressure, and the PP sheet presents a C-shaped structure with the opening downward, so as to increase the structural strength of the PP sheet.

[0015] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0016] By adopting the above technical solution, by setting up a sorting component, the edge alignment operation can be performed after the combined stacking of the PP sheet and the base plate is completed; specifically, after the plates are stacked, the first motor is controlled to drive the bidirectional screw to rotate, so that the two first slides move synchronously toward the adjacent side, pushing the combined plate to the middle position (due to the limiting effect of the inner wall of the limit frame, there is a small error in this direction) and completing the alignment, while in the other two directions, the second motor is controlled to drive the gear to rotate, so that the two racks move synchronously in the center, and drive the second slide and the alignment plate to move synchronously toward the adjacent side, thereby prompting the PP sheet to be aligned with the other two sides of the base plate; wherein, the side of the first slide that is adjacent to the part above the operating platform plate is polished to reduce the obstruction of the first slide to the combined plate during the alignment process.

[0017] A further improvement of the technical solution of the present invention is that: an ejection groove is opened in the middle position of the movable platform plate, an electric push rod is symmetrically fixedly connected to the top of the movable platform plate, a push plate is fixedly connected between the movable ends of the electric push rod, the side wall of the push plate is slidably connected to the inner wall of the ejection groove, and the four corners of the top of the push plate are all set to be rounded corners.

[0018] By adopting the above technical solution, after the alignment of the two sides with a small error is completed, the push plate is pushed upward by controlling the extension of the electric push rod, thereby pushing the middle part of the combined plate upward. During the process, the first motor is controlled to continue working, keeping the side of the first slide close to contact the combined plate to maintain the limit, so that the combined plate presents an inverted C-shaped structure with higher compressive strength. At this time, when a centering force is applied to the other two sides of the combined plate, it can be pushed smoothly until the alignment is completed; and after the alignment is completed, the push plate is controlled to reset, and the first slide is controlled to reset back to the state when the combined plate was initially aligned.

[0019] Further improvement of the technical scheme of the present application is that the fixed part of the feeding structure in the combination part is fixedly connected with a friction plate, the bottom of the movable platform plate is fixedly connected with a friction block, and the side close to the friction plate of the friction block is provided with a rough surface.

[0020] By setting the friction plate and the friction block, vibration can be generated when the rough surfaces of the two are in contact, which facilitates the arrangement of each layer of plate, and the specific mode is to control the movement of the movable platform plate.

[0021] Further improvement of the technical scheme of the present application is that the side close to the alignment plate is provided with a pressure sensor, and the pressure sensor and the second motor are electrically connected with the controller.

[0022] By setting the pressure sensor on the side close to the alignment plate, it can be judged whether the alignment is completed according to the pressure data collected by the two pressure sensors, and corresponding actions are taken according to whether the alignment is completed.

[0023] The present application also provides a conveying method for circuit board production, comprising the following steps:

[0024] S1, put the PP sheet into the feeding part and wait for the second material taking part to take it, and place the substrate in the conveying part, and wait for the material taking after conveying to the material taking position of the first material taking part;

[0025] S2, use the suction cup to suck the PP sheet to be taken, and press the stacked PP sheet downward to make the sucked PP sheet bend downward, and the taken PP sheet and the un-taken PP sheet are gradually separated from both sides;

[0026] S3, slowly take the sucked PP sheet, quickly place it on the arranging component after completely separating from the lower PP sheet in contact, take the substrate by the first material taking component and place it on the placed PP sheet, and repeat the PP sheet taking operation to cover the substrate;

[0027] S4, align the combination plate of the PP sheet and the substrate on two sides by the arranging component, bend the combination plate into a C shape, continue to align the other two sides until all edges are completely aligned, and restore the state of the combination plate to the flat state;

[0028] S5, send the combination plate into the combination component for combination, so that the PP sheet is adhered to both sides of the substrate.

[0029] Due to the adoption of the above technical scheme, the technical progress achieved by the present application relative to the prior art is:

[0030] 1、The second material taking component is arranged in the present application, which can take out the stacked PP sheets one by one and combine them with the substrate, and the arranged plate is aligned by the arranging component, and then the combination component is used for combination, so that the automatic combination of the PP sheet and the substrate is realized, manual operation is not needed, and the work efficiency is greatly improved; and in the material taking process, the two sides of the feeding component are driven downward by the downward pressure in the material taking process, so that the PP sheet presents a downward bending phenomenon (C-shaped with the opening downward), and correspondingly, the taken PP sheet also presents this shape, forming a stable frame with the vertical web (the PP sheet itself) and the two side flanges (the bending parts), which is similar to an I-beam, significantly improving the buckling resistance, so that the PP sheet is more stable in the taking process.

[0031] 2、The present application is provided with a pressure roller, which can actively press down during the material taking process, so that the two sides of the PP sheet are bent downward, thereby presenting a C-shaped structure with the opening downward; specifically, the suction cups of the rotating joint rotating part and the suction cups at the bottom of the fixed frame are flush and contact the PP sheet, and the suction cups are controlled to be vacuumized by the electromagnetic valve, thereby sucking the PP sheet, at this time the PP sheet is fixed by six suction cups, further, by controlling the working of the lifting cylinder (the piston rod is initially in the extended state), the piston rod is retracted, thereby driving the lifting frame to move downward, and driving the pressing frame to move downward, thereby driving the pressure roller to press downward, so that the two sides of the PP sheet are bent downward under the downward pressure, presenting a C-shaped structure with the opening downward, thereby increasing the structural strength of the PP sheet.

[0032] 3、The present application is by setting the pressure roller in the horizontal direction can be self-adaptive adjustment structure, with PP sheet in the scheme both sides under the pressure of the two sides tilt downward trend, so that the pressure roller down process will also be affected by the PP sheet from the horizontal direction to move, so that the pressure roller down part to both sides, the process of PP sheet under the pressure of change so that the PP sheet pulling suction cup to make the rotary joint with rotation, and compression of the second spring to accumulate potential energy; and in the pressure roller up process, the pressure of the PP sheet on the pressure roller decreases, so that the pressure roller in the second spring rebound to the side of the close, and the part of the pressure roller is the most top PP sheet and the lower PP sheet bifurcation part, the part gradually to the center with the above design, so that the contact part gradually reduces when separating, thereby reducing the problem of the lower PP sheet when separating.

[0033] 4、The present application is by setting the speed limiting structure, to limit the reset speed of the discharge plate, so that the discharge plate reset process more gentle, while eliminating the first spring produced by the damping effect; specific, in the discharge plate down process, the telescopic rod shortens, the process of piston plate relative to the hollow column down, the hollow column inside produces positive pressure and air from the exhaust pipe, while the discharge plate reset, the outside air can only enter the hollow column through the air inlet pipe, affected by the diameter of the air inlet pipe, so that the hollow can not quickly enter, thereby limiting the speed of telescopic rod reset under the action of air pressure, to slow down the reset speed of the discharge plate, avoid the discharge plate fast reset and subsequent up and down swing caused by the PP sheet edge folding situation.

[0034] 5、The present application is by setting the arrangement component, can complete the edge alignment operation of the combination of PP sheet and the base plate; specific, after the plate is stacked, by controlling the first motor work, drive the two way screw rod rotation, make two first slide synchronous to the side of the close, push the combination plate to the middle position (affected by the limiting frame inner wall limiting effect, there is a small error in this direction) and complete the alignment, while the other two directions, by controlling the second motor work, drive the gear rotation, so that the two rack synchronous center activity, and drive the second slide and alignment plate to the side of the close synchronous activity, so as to make the PP sheet and the base plate of the other two sides alignment. BRIEF DESCRIPTION OF DRAWINGS

[0035] The present application is further described below in conjunction with the drawings.

[0036] Figure 1 It is one of the structure schematic diagram of the present application (hidden part cover plate);

[0037] Figure 2 It is the second structure schematic diagram of the present application;

[0038] Figure 3This is one of the structural diagrams of the second material-taking component of the present invention (before bending the PP sheet);

[0039] Figure 4 This is the second structural diagram of the second material-taking component of the present invention (after bending the PP sheet);

[0040] Figure 5 This is a schematic main view of the second material-removing component of the present invention during the material-removing process;

[0041] Figure 6 It is a structural schematic diagram of the discharge component of the present invention;

[0042] Figure 7 It is a structural schematic diagram of the telescopic rod of the present invention;

[0043] Figure 8 It is a structural diagram of the components of the present invention;

[0044] Figure 9 This is one of the schematic diagrams of the split structure of the arrangement components of the present invention;

[0045] Figure 10 This is the second schematic diagram of the split structure of the arrangement components of the present invention;

[0046] Figure 11 For the present invention Figure 1 Enlarged view of point A in the middle;

[0047] Figure 12 For the present invention Figure 4 Enlarged view of point B in the middle;

[0048] Figure 13 For the present invention Figure 5 Enlarged view of point C in the middle.

[0049] In the figure: 1. conveying component; 2. expansion frame; 3. first material picking component; 4. first servo module; 5. second servo module; 6. mounting plate; 7. lifting cylinder; 8. lifting frame; 9. air guide tube; 10. rotary joint; 11. suction cup; 12. reset plate; 13. fixing frame; 14. support block; 15. limit frame; 16. hollow column; 17. support rod; 18. first spring; 19. piston plate; 20. exhaust pipe; 21. intake pipe; 22. load plate; 23. discharge plate; 24. Second slide bar; 25. Bracket; 26. Roller frame; 27. Pressure roller; 28. Adjustment block; 29. ​​Limit rod; 30. Second spring; 31. Movable platform plate; 32. Operating platform plate; 33. First motor; 34. Second motor; 35. Connecting plate; 36. Bidirectional screw rod; 37. First slide; 38. Gear; 39. Slide groove; 40. Second slide; 41. Alignment plate; 42. Rack; 43. Electric push rod; 44. Push plate; 45. Ejection groove; 46. Friction plate; 47. Friction block. DETAILED DESCRIPTION

[0050] The application will be further described in detail below in combination with examples.

[0051] Example 1

[0052] As shown in Figure 1 , Figure 2 and Figure 3 , the application provides a conveying mechanism for circuit board production, which comprises a conveying component 1, a controller and a combination component for pre-combining a substrate with a PP sheet; further comprising: a feeding component arranged at a middle position on one side of the conveying component 1 for placing the PP sheets stacked layer by layer; a first taking component 3 for taking the substrate on the conveying line to the combination component; a second taking component for taking the PP sheet on the feeding component to the combination component; a arranging component for arranging the stacked substrate and PP sheet until the edges are aligned; as shown in Figure 11 , the second taking component comprises a first servo module 4 fixedly connected between the extension frame 2 and the frame body of the conveying component 1, the movable end of the first servo module 4 is fixedly connected with a second servo module 5, the movable end of the second servo module 5 is fixedly connected with a mounting plate 6, the bottom of the mounting plate 6 is provided with a plurality of suction cups 11, the suction cups 11 are communicated with an external vacuum pump through a pipeline and a solenoid valve; the feeding component comprises a supporting block 14, the top of the supporting block 14 is fixedly connected with a limiting frame 15, the middle position in the limiting frame 15 is fixedly connected with a load plate 22, two feeding plates 23 are symmetrically and slidably connected between the inner walls of the limiting frame 15, a plurality of extension rods are fixedly connected between the feeding plates 23 and the supporting block 14, and the outer part of each extension rod is sleeved with a first spring 18.

[0053] The combination component comprises a feeding structure for feeding the combined plate into the combination operation position, and the combination operation mainly adheres the PP sheet and the substrate together through appropriate hot melting operation.

[0054] By arranging the second taking component, the PP sheets stacked layer by layer can be taken out one by one and combined with the substrate, and the arranged plate is aligned by the arranging component, and then the combination operation is performed by the combination component, so that the automatic combination operation of the PP sheet and the substrate is realized, and manual operation is not needed, which greatly improves the work efficiency.

[0055] Specifically, the PP sheet taking process can control the movement of the mounting plate 6 (provided with a structure for adsorbing the PP sheet) by controlling the operation of the first servo module 4 and the second servo module 5, wherein the path of the active end of the first servo module 4 is a straight line in the horizontal direction and is perpendicular to the movement path of the second servo module 5, and after taking the PP sheet at the position where the PP sheet is located, the mounting plate 6 moves to the position where the arranging component is located; the discharging component is provided with a structure that can move up and down on both sides and is fixed in the middle, and during the taking process, the two sides (discharging plates 23) of the discharging component will move downward under the downward pressure in the taking process, so that the PP sheet presents a downward bending phenomenon (in the shape of a C with the opening downward), and correspondingly, the taken PP sheet also presents this shape, and the vertical web (the PP sheet itself) and the two side flanges (the bending parts) form a stable frame, similar to an I-beam, which significantly improves the buckling resistance, so that the PP sheet is more stable during taking.

[0056] As shown in Figure 3 , Figure 4 and Figure 5 , preferably, the second taking component further comprises a fixed frame 13 fixedly connected to the middle position of the bottom surface of the mounting plate 6, the bottom of the mounting plate 6 is fixedly provided with a jacking cylinder 7, the piston rod of the jacking cylinder 7 extends above the mounting plate 6 and is fixedly connected with a lifting frame 8, four corners of the lifting frame 8 are fixedly connected with air guide pipes 9, the bottom of the air guide pipes 9 extends below the mounting plate 6 through the through holes on the mounting plate 6 and is fixedly connected with a rotary joint 10 (the rotation angle range is limited, and the rotation shaft is a damping rotation shaft), wherein four suction cups 11 are connected to one end of the rotary joint 10 away from the air guide pipes 9, and the other two suction cups 11 are fixedly installed symmetrically on the bottom of the fixed frame 13; two pressing frames are fixedly connected symmetrically on the lifting frame 8, the bottom of each pressing frame is fixedly connected with a roller frame 26, the inside of the roller frame 26 is provided with a pressure roller 27, and the bottom of the lifting frame 8 is fixedly connected with four reset plates 12 corresponding to the rotary joint 10, the bottom of each reset plate 12 is provided with a semicircular slot, one end of the rotary joint 10 is provided with an arc surface matched with the semicircular slot, so that after the lifting frame 8 is reset, the rotary joint 10 is reset by the extrusion and cooperation of the semicircular slot and the arc surface on the rotary joint 10 when the rotary joint 10 is reset upward, and the corresponding suction cup 11 is adjusted downward.

[0057] Because in the production process, the PP sheets are stacked after cutting, and need to be taken one by one during assembly, but the stacked PP sheets have electrostatic influence on each other, and the airflow during taking causes great disturbance to the lower PP sheets when taking the upper PP sheets, especially the corner parts of the PP sheets, which will be rolled up when disturbed by the above-mentioned disturbance and will fall down after losing the disturbance (such as electrostatic or airflow), thereby causing the corner parts to bend, which will affect the subsequent taking operation on the one hand, and the bent PP sheet will directly affect the assembly with the substrate on the other hand;

[0058] In the above scheme, a certain pressure is needed to make the discharge plate 23 move downward, so that the PP sheet presents a downward bending phenomenon (reducing the above bending phenomenon), but considering the actual situation, the PP sheet itself has a certain mass, so the force that makes the discharge plate 23 move downward cannot be too small, and the suction cup 11 itself is soft, and it is not suitable to apply too much pressure to make the discharge plate 23 move downward, so it is difficult to achieve the downward bending of the PP sheet during the taking process relying on the suction cup 11 alone.

[0059] In the present embodiment, by setting the pressure roller 27, the PP sheet can be actively pressed downward during the taking process, so that the two sides of the PP sheet are bent downward, thereby presenting a C-shaped structure with the opening downward; Specifically, the suction cup 11 of the rotating joint 10 rotating part and the suction cup 11 at the bottom of the fixed frame 13 are flush and when they contact the PP sheet, the suction cup 11 is controlled to be vacuumized by the electromagnetic valve, thereby sucking the PP sheet, at this time the PP sheet is fixed by six suction cups 11, further, by controlling the working of the lifting cylinder 7 (the piston rod is initially in the extended state), the piston rod is retracted, thereby driving the lifting frame 8 to move downward, and driving the pressure frame to move downward, thereby driving the pressure roller 27 to press downward, so that the two sides of the PP sheet are pressed downward and bent downward, presenting a C-shaped structure with the opening downward, thereby increasing the structural strength of the PP sheet.

[0060] In addition, during the above pressing process, since the uppermost PP sheet is affected by multiple suction cups 11, it will not completely sag, but will present a state that the lower pressing part and the two sides (this part can be reduced by controlling the position of the suction cup 11) are at the bottom, the middle part is at the top, and the part where the suction cup 11 on the rotating joint 10 is located is a curve with medium height, while the PP sheets other than the uppermost one are affected by the downward movement of the discharge plate 23 on both sides for providing support, and the two sides lose support and bend downward, the overall effect diagram is shown in the accompanying drawings, so that the uppermost PP sheet gradually separates from other PP sheets on both sides during the taking process, thereby reducing the contact area with other PP sheets, thereby reducing the influence of electrostatic adsorption and air flow disturbance in the subsequent separation process, and the above process gradually reduces the contact area relative to direct taking, thereby reducing the disturbance to the whole lower PP sheet. Figure 5

[0061] It should be particularly pointed out that after the above design, the stacked PP sheets generally present a C-shaped structure with the opening downward, so they are less likely to bend upward when disturbed (relative to horizontally placed PP sheets), thereby reducing the influence of upward bending or bending edge caused by disturbance.

[0062] As shown in Figure 12 and Figure 13 ​As shown, preferably, the pressing frame comprises two second sliding rods 24 which are slidingly connected to the top of the mounting plate 6, the top of the second sliding rod 24 is fixedly connected with the lifting frame 8, the bottom of the second sliding rod 24 extends below the mounting plate 6 and is fixedly connected with a bracket 25, and a roller frame 26 is fixedly connected to the bottom of the bracket 25; two adjusting blocks 28 are symmetrically slidingly connected to the two sides of the roller frame 26, a pressing roller 27 is rotatably connected between the sides of the two adjusting blocks 28 close to each other, one side of the adjusting block 28 is fixedly connected with a limiting rod 29, and the end of the limiting rod 29 away from the adjusting block 28 extends to the outside of the roller frame 26, and the outside of the limiting rod 29 is sleeved with a second spring 30.

[0063] Although the above process separates the uppermost PP sheet from the other PP sheets by pressing downward before taking, the middle part of the PP sheet is still in contact and affected by disturbance when taken (completely separated), and the control of the second servo module 5 starts to work to take up the PP sheet to be adsorbed when the uppermost PP sheet is in the state shown, but in this process, with the rising of the suction cup 11 and the pressing roller 27, the PP sheet below is gradually reset due to the loss of the pressing left and right under the support of its own toughness and the feeding plate 23, so that there is a large contact between the middle part of the PP sheet to be taken and the lower PP sheet, which is easy to lift the lower PP sheet when separated. Figure 5

[0064] In this embodiment, by setting the pressing roller 27 to be self-adaptable in the horizontal direction, the PP sheet presents a trend of tilting downward on both sides under the pressure, so that the pressing roller 27 moves in the horizontal direction under the action of the PP sheet during the pressing process, so that the pressing position of the pressing roller 27 expands to both sides, the pressing position of the PP sheet changes during this process, so that the suction cup 11 (located on the rotary joint 10) is pulled by the PP sheet to make the rotary joint 10 rotate, and the second spring 30 is compressed to accumulate potential energy; and during the upward movement of the pressing roller 27, the pressure of the PP sheet on the pressing roller 27 decreases, so that the pressing roller 27 moves to the side close to it under the rebounding action of the second spring 30, and the position pressed by the pressing roller 27 is the bifurcation position of the uppermost PP sheet and the lower PP sheet, which gradually moves to the center according to the above design, so that the contact position gradually decreases (rather than suddenly separating from a large area to cause large disturbance), thereby reducing the problem of lifting the lower PP sheet when separating.

[0065] As shown in the figure, Figure 6 and Figure 7 ​As shown, preferably, the telescopic rod comprises a hollow column 16 fixedly connected at the top of the support block 14, a piston plate 19 slidingly connected between the inner walls of the hollow column 16, a support rod 17 fixedly connected at the top of the piston plate 19, the support rod 17 being fixedly connected with the feeding plate 23, the hollow column 16 being provided with an exhaust pipe 20 at one side, the exhaust pipe 20 being connected with an air inlet pipe 21 at the middle position, the air inlet pipe 21 and the exhaust pipe 20 being provided with one-way valves at the inside, and the pipe diameter of the air inlet pipe 21 being smaller than that of the exhaust pipe 20.

[0066] When the PP sheet is picked up, the feeding plate 23 is also reset, and if the reset speed of the feeding plate 23 is too large, on the one hand, the lower PP sheet still continuously adheres to the top PP sheet when the top PP sheet is picked up, and on the other hand, the mutation of the rebound force and the subsequent shaking will affect the PP sheet, which is easy to bend upward under the rebound inertia effect;

[0067] In the embodiment, the reset speed of the feeding plate 23 is limited by setting a speed limiting structure, so that the reset process of the feeding plate 23 is more gentle, and the shaking effect generated by the first spring 18 is eliminated by the principle similar to damping; specifically, during the pressing process of the feeding plate 23, the telescopic rod is shortened, and the piston plate 19 moves downward relative to the hollow column 16, a positive pressure is generated in the hollow column 16 and the air is discharged from the exhaust pipe 20, wherein the one-way valve in the exhaust pipe 20 only unidirectionally communicates from the hollow column 16 to the outside, and the one-way valve in the air inlet pipe 21 only unidirectionally communicates from the outside to the air inlet pipe 21, and the pipe diameter of the exhaust pipe 20 is larger than that of the air inlet pipe 21, so that the exhaust of the hollow column 16 through the exhaust pipe 20 is not affected during the above-mentioned pressing process of the feeding plate 23, and when the feeding plate 23 is reset, the outside air can only enter the hollow column 16 through the air inlet pipe 21, which is affected by the pipe diameter of the air inlet pipe 21, so that the air cannot quickly enter, thereby limiting the reset speed of the telescopic rod under the action of air pressure, so as to slow down the reset speed of the feeding plate 23, and avoid the situation that the PP sheet is folded due to the fast reset of the feeding plate 23 and the subsequent shaking (the shaking process is also limited, which has the effect of damping).

[0068] It should be particularly noted that the feeding plate 23 needs to be reset after each pressing, because after the above-mentioned pressing action, the upper PP sheet is inevitably disturbed and the two sides are not limited, so there is a certain deviation, and direct subsequent material taking will affect the subsequent alignment operation, and after reset, the feeding plate 23 can be automatically arranged by contacting the inner wall of the PP sheet through the limiting frame 15.

[0069] As shown in the drawings, Figure 8 , Figure 9 and Figure 10As shown, preferably, the finishing component includes a movable platform plate 31 fixedly connected to the movable part of the feeding structure in the combined component, the top of the movable platform plate 31 is fixedly connected with two connecting plates 35, the top between the two connecting plates 35 is fixedly connected with an operation platform plate 32, a plurality of strip-shaped through slots are symmetrically formed on the operation platform plate 32, a bidirectional screw rod 36 is rotatably connected between the sides of the two connecting plates 35 close to each other, a first motor 33 is fixedly connected to the side wall of one of the connecting plates 35, the output end of the first motor 33 is fixedly connected with the bidirectional screw rod 36, two first sliding frames 37 are symmetrically and threadedly connected to the outside of the bidirectional screw rod 36, the first sliding frames 37 are slidingly connected with the operation platform plate 32, and the top of the first sliding frames 37 extends to above the operation platform plate 32 through the strip-shaped through slots; a second motor 34 is fixedly installed at the bottom of the movable platform plate 31, the output end of the second motor 34 extends to above the movable platform plate 31 and is fixedly connected with a gear 38, a sliding groove 39 is symmetrically formed on the operation platform plate 32, a second sliding frame 40 is slidingly connected between the inner walls of the sliding groove 39, a alignment plate 41 is fixedly connected to the top of the second sliding frame 40, and a rack 42 is fixedly connected to the bottom of the second sliding frame 40 and is in meshing connection with the gear 38.

[0070] In the process of combining and stacking the PP sheet and the substrate, although the servo module accurately controls the position for taking the material and does not cause large deviation, the taking process has an impact (during the taking and pressing process, the PP sheet is still limited by the limiting frame 15 on two sides, so there is no large deviation, but the PP sheet is easy to wring during the pressing process due to the smooth surface of the PP sheet, so slight deviation is caused in the other two directions), and the edge part of the PP sheet and the substrate is not completely aligned after being placed;

[0071] By arranging the finishing component, the edge alignment operation can be performed after the combination and stacking of the PP sheet and the substrate are completed. Specifically, after the plate is stacked, the first motor 33 is controlled to work, the bidirectional screw rod 36 is driven to rotate, the two first sliding frames 37 are synchronously moved to the side close to each other, the combined plate is pushed to the middle position (limited by the inner wall of the limiting frame 15, there is a small error in this direction), and the alignment is completed, and in the other two directions, the second motor 34 is controlled to work, the gear 38 is driven to rotate, the two racks 42 are synchronously centered and moved, and the second sliding frame 40 and the alignment plate 41 are synchronously moved to the side close to each other, so as to align the other two sides of the PP sheet and the substrate. The part of the first sliding frame 37 above the operation platform plate 32 is close to each other and is subjected to smooth surface treatment, so as to reduce the hindering effect of the first sliding frame 37 on the combined plate during the alignment process.

[0072] As shown in the figures, Figure 8 , Figure 9 and Figure 10As shown, preferably, the middle part of the movable platform plate 31 is provided with an ejection groove 45, the top of the movable platform plate 31 is symmetrically fixedly connected with an electric push rod 43, the movable ends of the electric push rod 43 are fixedly connected with a push plate 44, the side wall of the push plate 44 is slidably connected with the inner wall of the ejection groove 45, and the four corners of the top of the push plate 44 are all provided with rounded corners.

[0073] However, the PP sheet itself is soft, and when misaligned, it is easy to bend the PP sheet by directly pushing, and it is difficult to determine whether the edge alignment operation is completed.

[0074] In this embodiment, after the two sides are aligned with a small error, the electric push rod 43 is controlled to extend to push the push plate 44 to move upward, so as to push the middle part of the combined plate upward, and in the process, the first motor 33 is controlled to continue to work, the side close to the first sliding frame 37 is kept in contact with the combined plate to keep the limit, so that the combined plate presents an inverted C-shaped structure with higher compressive strength, and when the other two sides of the combined plate are subjected to the centering force, it can be smoothly pushed until the alignment is completed; and after the alignment is completed, the push plate 44 is controlled to reset, and the first sliding frame 37 is controlled to reset to the initial state when the combined plate is aligned.

[0075] As shown in Figure 8 and Figure 9 As shown, preferably, the fixed part of the feeding structure in the combined component is fixedly connected with a friction plate 46, the bottom of the movable platform plate 31 is fixedly connected with a friction block 47, and the side close to the friction plate 46 of the friction block 47 is provided with a rough surface, and when in contact, vibration is generated by relative sliding.

[0076] Since there is a certain friction force between the PP sheet and the substrate after being stacked, there is a certain resistance between the sheets during the arrangement process.

[0077] By setting the friction plate 46 and the friction block 47, vibration can be generated when the rough surfaces of the two are in contact, and in this process, the arrangement process of each layer of plate is matched, so that each layer of plate is more easily pushed, and the specific mode is to control the movable platform plate 31 to move.

[0078] Preferably, the side close to the alignment plate 41 is provided with a pressure sensor, and the pressure sensor and the second motor 34 are electrically connected with the controller, and when the pressure signals collected by the two pressure sensors are not equal and do not continuously increase during the working process of the second motor 34, the second motor 34 is controlled to be temporarily reversed after 0.2-0.5s, and then continue to rotate normally, and the above operation is repeated until the pressure signals collected by the two pressure sensors are equal and synchronously increased, and the second motor 34 is controlled to stop working.

[0079] The direct pushing manner when aligning is easy to bend the PP sheet, and it is not easy to judge whether the alignment is completed, therefore, in the embodiment, the pressure sensors are arranged on the side close to the alignment plate 41, whether the alignment is completed is judged according to the pressure data collected by the two pressure sensors, and corresponding actions are made according to whether the alignment is completed, when the alignment is not completed, the second motor 34 is directly rotated until the alignment plate 41 pushes the combined plate, the pressure data is collected by the pressure sensors on both sides, when only one side of the alignment plate 41 contacts the combined plate, only one pressure sensor collects the pressure data, the signals are not equal, which indicates that the alignment is not completed, then the pushing is continued for 0.3s, and then the reverse rotation is performed, and the action is repeated until the data is also collected on the other side; when the data is collected on both sides but does not continuously increase, but maintains a fluctuation range, which indicates that the combined plate is pushed, at this time, the alignment is also not completed.

[0080] The application further provides a conveying method for circuit board production, comprising the following steps:

[0081] S1, placing the PP sheet into the feeding component to wait for the second feeding component to take, and placing the base plate in the conveying component 1, and waiting for the feeding after conveying to the feeding position of the first feeding component 3;

[0082] S2, sucking the PP sheet to be taken by the suction cup 11, and pressing the stacked PP sheet downward to make the sucked PP sheet all bend downward, and the taken PP sheet and the un-taken PP sheet are gradually separated from both sides;

[0083] S3, slowly taking the sucked PP sheet, quickly placing on the arrangement component after completely separating from the lower PP sheet in contact, taking the base plate by the first feeding component 3 and placing on the placed PP sheet, and repeating the taking operation of the PP sheet and covering on the base plate;

[0084] S4, aligning the combined plate of the PP sheet and the base plate on two sides by the arrangement component, and bending the combined plate into a C shape, continuing to align the other two sides until all edges are completely aligned, and restoring the state of the combined plate to the flat state;

[0085] S5, sending the combined plate into the combination component to combine, so that the PP sheet is adhered on both sides of the base plate.

[0086] The above has made a detailed description of the application in general, but some modifications or improvements can be made on the basis of the application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit and principles of the application are within the protection scope of the application.

Claims

1. A conveying mechanism for circuit board production, comprising a conveying component (1), a controller and a combination component, wherein the combination component is used to pre-assemble a substrate and a PP sheet; characterized in that: Also includes: An expansion frame (2) is fixedly connected to a middle position of one side of the conveying component (1); A material discharge component is arranged inside the expansion frame (2) and is used for placing the stacked PP sheets; A first material taking component (3) is used to take the substrate on the conveyor line and place it on the assembly component; The second material taking component is used to take the PP sheet on the material discharging component to the assembly component; A tidying component is arranged inside the conveying component (1) and is used to arrange the stacked substrates and PP sheets until their edges are aligned; The second material-picking component comprises a first servo module (4) fixedly connected between the expansion frame (2) and the frame body of the conveying component (1); the movable end of the first servo module (4) is fixedly connected to the second servo module (5); the movable end of the second servo module (5) is fixedly connected to the mounting plate (6); a plurality of suction cups (11) are provided at the bottom of the mounting plate (6); the suction cups (11) are connected to an external vacuum pump through a pipeline and a solenoid valve; The discharge component includes a support block (14) fixedly connected to the inside of the expansion frame (2), the top of the support block (14) is fixedly connected to a limit frame (15), the middle position of the limit frame (15) is fixedly connected to a load plate (22), two discharge plates (23) are symmetrically slidably connected between the inner walls of the limit frame (15), and a plurality of telescopic rods are fixedly connected between the discharge plates (23) and the support block (14), and the outside of the telescopic rods are all covered with a first spring (18).

2. A conveying mechanism for circuit board production according to claim 1, characterized in that: The second material-taking component also includes a fixing frame (13), which is fixedly connected to the middle position of the bottom surface of the mounting plate (6), and a lifting cylinder (7) is fixedly installed on the bottom of the mounting plate (6). The piston rod of the lifting cylinder (7) extends to the top of the mounting plate (6) and is fixedly connected to a lifting frame (8). The four corners of the lifting frame (8) are fixedly connected to an air guide pipe (9), and the bottom of the air guide pipe (9) extends to the bottom of the mounting plate (6) through a through hole on the mounting plate (6) and is fixedly connected to a rotary joint (10), wherein the four suction cups (11) are connected to the rotary joint. The adapter (10) is away from one end of the air duct (9), and the other two suction cups (11) are symmetrically fixedly installed on the bottom of the fixed frame (13); two pressing frames are symmetrically fixedly connected to the lifting frame (8), the bottom of the pressing frame is fixedly connected to a roller frame (26), and a pressing roller (27) is installed inside the roller frame (26); the bottom of the lifting frame (8) is symmetrically fixedly connected to four reset plates (12) corresponding to the rotary joints (10), the bottom of the reset plate (12) is provided with a semicircular groove, and one end of the rotary joint (10) is provided with an arc surface used in conjunction with the semicircular groove.

3. A conveying mechanism for circuit board production according to claim 2, characterized in that: The pressing frame includes two second sliding bars (24), the second sliding bars (24) are slidably connected to the top of the mounting plate (6), the top of the second sliding bars (24) is fixedly connected to the lifting frame (8), the bottom of the second sliding bars (24) extends to the bottom of the mounting plate (6) and is fixedly connected to the bracket (25), and the roller frame (26) is fixedly connected to the bottom of the bracket (25); the two sides of the roller frame (26) are symmetrically slidably connected to the adjustment blocks (28), the pressure roller (27) is rotatably connected between the two sides of the adjustment blocks (28) that are close to each other, and one side of the adjustment block (28) is fixedly connected to a limiting rod (29), and the end of the limiting rod (29) away from the adjustment block (28) extends to the outside of the roller frame (26), and the outside of the limiting rod (29) is covered with a second spring (30).

4. A conveying mechanism for circuit board production according to claim 3, characterized in that: The telescopic rod comprises a hollow column (16) fixedly connected to the top of the support block (14); a piston plate (19) is slidably connected between the inner walls of the hollow column (16); a support rod (17) is fixedly connected to the top of the piston plate (19); the top of the support rod (17) is fixedly connected to the discharge plate (23); an exhaust pipe (20) is provided on one side of the hollow column (16); an intake pipe (21) is connected to the middle of the exhaust pipe (20); a one-way valve is provided inside the intake pipe (21) and the exhaust pipe (20); and the diameter of the intake pipe (21) is smaller than that of the exhaust pipe (20).

5. A conveying mechanism for circuit board production according to claim 4, characterized in that: The arranging component comprises a movable platform plate (31), the movable platform plate (31) is fixedly connected to the movable part of the feeding structure in the combined component, the top of the movable platform plate (31) is symmetrically fixedly connected to two connecting plates (35), an operating platform plate (32) is fixedly connected between the tops of the two connecting plates (35), a plurality of strip-shaped through grooves are symmetrically opened on the operating platform plate (32), a bidirectional screw rod (36) is rotatably connected between the adjacent sides of the two connecting plates (35), a first motor (33) is fixedly connected to the side wall of one of the connecting plates (35), the output end of the first motor (33) is fixedly connected to the bidirectional screw rod (36), and the outer side of the bidirectional screw rod (36) is symmetrically threadedly connected to two first slides (37 ), the first slide (37) is slidably connected to the operating platform plate (32), and the top of the first slide (37) extends to the top of the operating platform plate (32) through a strip-shaped through groove; a second motor (34) is fixedly installed at the bottom of the movable platform plate (31), and the output end of the second motor (34) extends to the top of the movable platform plate (31) and is fixedly connected to a gear (38), and a slide groove (39) is symmetrically opened on the operating platform plate (32), and a second slide (40) is slidably connected between the inner walls of the slide groove (39), and the top of the second slide (40) is fixedly connected to an alignment plate (41), and the bottom of the second slide (40) is fixedly connected to a rack (42), and the rack (42) is meshed with the gear (38).

6. A conveying mechanism for circuit board production according to claim 5, characterized in that: An ejection groove (45) is provided in the middle of the movable platform plate (31), an electric push rod (43) is symmetrically fixedly connected to the top of the movable platform plate (31), and an ejection plate (44) is fixedly connected between the movable ends of the electric push rod (43), and the side wall of the ejection plate (44) is slidably connected to the inner wall of the ejection groove (45), and the four corners of the top of the ejection plate (44) are all set to be rounded.

7. A conveying mechanism for circuit board production according to claim 6, characterized in that: The fixed portion of the feeding structure in the combined component is fixedly connected to a friction plate (46), and the bottom of the movable platform plate (31) is fixedly connected to a friction block (47). The friction block (47) and the friction plate (46) are both provided with rough surfaces on the side close to each other, and vibration is generated by relative sliding when in contact.

8. The conveying mechanism for circuit board production according to claim 7, characterized in that: A pressure sensor is installed on one side of the alignment plate (41) adjacent to the other, and the pressure sensor and the second motor (34) are both electrically connected to the controller.

9. A conveying method for circuit board production, characterized in that: The conveying mechanism for producing a circuit board according to any one of claims 1 to 8 comprises the following steps: S1, placing the PP sheet into the discharge component and waiting for the second material taking component to take it, and placing the substrate piece by piece on the conveying component (1), and waiting for the material to be taken after being conveyed to the material taking position of the first material taking component (3); S2. Using the suction cup (11), suck the PP sheet to be taken, and pressing down the stacked PP sheets so that the sucked PP sheets are all bent downward, and the taken PP sheet and the untaken PP sheet are gradually separated from each other from both sides; S3, slowly pick up the sucked PP sheet, completely separate it from the lower PP sheet in contact with it, and quickly place it on the sorting component, use the first material taking component (3) to take the base plate and place it on the placed PP sheet, and repeat the PP sheet taking operation to cover the base plate; S4. Use the finishing component to align two sides of the combined board of the PP sheet and the base plate, bend the combined board into a C shape, and continue to align the other two sides until all edges are completely aligned, restoring the state of the combined board to a flat state; S5. The combined board is fed into the combined component for combination so that the PP sheet adheres to both sides of the substrate.

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