Self-positioning circuit board solder paste printing equipment

Abstract

The invention discloses self-positioning circuit board solder paste printing equipment which comprises a base table, a conveying belt, a steel plate frame, a solder paste printing mechanism and an integrated board body, and particularly relates to the field of integrated circuit board production. The turnover gear is matched with the tooth frame, so that the circuit board is turned over when rising to smear solder paste, and the scraper extrudes and smears after the manufacturing surface of the circuit board is attached to a steel plate, thereby reducing dust adhesion on the surface of the circuit board and ensuring the coating quality; the vertical stabilizing part enables the overturning rod to overcome the driving of the overturning gear to overturn after the circuit board is printed, the clamping column is matched with the fixing groove to guarantee stable lifting of the circuit board, solder paste in the thixotropic recovery period is prevented from being damaged, and rising overturning and falling non-overturning are achieved. When the circuit board is clamped and ascended, the contraction block is matched with the connecting frame, and the blowing nozzle firstly cleans the downward printing surface of the circuit board and cleans the other surface of the circuit board after overturning, so that double-surface cleaning is realized, and the printing quality of the circuit board and subsequent procedures are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of integrated circuit board production, and particularly relates to a self-positioning circuit board tin paste printing device. BACKGROUND

[0002] In the production process of an integrated circuit board, a tin paste printing process is a very important process, directly affecting the overall production quality of the integrated circuit board, and the main purpose of the tin paste printing process is to print a certain amount of tin paste to a specified position on the integrated circuit board. In this process, a conveying device, a supporting device, a printing steel plate, a paste dotting machine, a doctor blade and other components need to be used for cooperation.

[0003] Specifically, in the patch processing procedure of the integrated circuit board, in order to cover the tin paste on the specific solder pad of the circuit board, a steel plate corresponding to the position of the solder pad needs to be made and installed on the tin paste printing machine, so as to ensure that the steel plate mesh hole is the same as the solder pad position on the PCB. After positioning is completed, the doctor blade on the tin paste printing machine moves back and forth on the steel plate, the tin paste passes through the mesh hole on the steel plate and covers the specific solder pad on the PCB to complete the tin paste printing. The full-automatic printing production line adopted by the mainstream integrated circuit board production line can realize automatic conveying of the board, automatic alignment of the steel plate and the integrated circuit board, printing of the tin paste and ejection of the board after the related parameters of the printing machine are set. The ejected board is automatically transmitted to the next work station through the transmission belt.

[0004] However, in the current production process of the integrated circuit board, the board surface is generally conveyed and transported in a face-up manner, which makes the printed surface of the circuit board easy to be covered by the metal debris and fiber dust floating in the production workshop. Especially in the case of applying tin paste to the solder pad of the integrated circuit board, since the dotting position of each element solder pad is small, covering a little dust can easily cause the tin paste to fail to completely contact the copper foil, resulting in thickening and virtual welding. The virtual welding caused by the dust is difficult to be identified in the SPI (solder paste detection) stage (the solder paste thickness or area may be normal), but micro-cracks or cavities are easy to exist in the solder joint after reflow, becoming a hidden danger of early failure of the integrated circuit board product and reducing the manufacturing yield of the integrated circuit board.

[0005] Therefore, the technical personnel in the field provide a self-positioning circuit board tin paste printing device to solve the problems in the background art. SUMMARY

[0006] The present application provides a self-positioning circuit board tin paste printing device to solve the problems in the background art.

[0007] To solve the above problems, the present application provides the following technical scheme:

[0008] The utility model provides a kind of self-positioning circuit board tin paste printing equipment, including base, conveying belt, steel plate frame, tin paste printing mechanism, integrated board body, the top of the base is equipped with installation groove one, the inner wall of installation groove one is fixedly installed in conveying belt, the top of the rear side of the base is fixedly connected with side frame, the front side outer wall of steel plate frame is fixedly installed in side frame, and the top of side frame is fixedly installed with tin paste printing mechanism;

[0009] The front side outer wall of the side frame is provided with a dust-proof flipping component to automatically clamp and position the side wall of the integrated board body after complete lowering and automatically complete the alignment process of the surface to be processed of the integrated board body during the rising process.

[0010] The front side of the side frame is provided with a vertical stabilizing component to switch control after tin paste printing, so that the printed surface of the integrated board body is vertically lowered in a manner of keeping upward, avoiding shear force generated by re-flipping to damage the tin paste on the printed surface of the integrated board body in thixotropic recovery period.

[0011] The front side outer wall of the side frame is provided with a double-sided cleaning component to follow-up clean the board body when the integrated board body is manufactured in place, further ensuring the cleanliness of the manufacturing surface.

[0012] Further, the dust-proof flipping component includes a flipping rod, one end of the flipping rod is rotatably connected with a support plate, one side of the support plate facing the side frame is fixedly connected with a connecting frame, a limiting groove is formed through the front side outer wall of the side frame corresponding to the connecting frame, the outer wall of the connecting frame is slidingly connected to the inner wall of the limiting groove, an electric push rod is fixedly installed on the rear side outer wall of the base, one end of the output rod of the electric push rod is fixedly connected with the bottom of the connecting frame, sliding grooves are formed through the two end faces of the flipping rod, and connecting rods one are symmetrically slidingly connected to the inner wall of the sliding grooves, the proximal end of each of the two connecting rods one is fixedly connected with a clamping block, limiting grooves are symmetrically formed through the outer wall of the flipping rod corresponding to the clamping blocks, and the outer wall of the clamping block is slidingly connected to the inner wall of the limiting groove.

[0013] Further, the proximal side outer wall of each of the two clamping blocks is fixedly connected with a connecting rod two, the proximal end of each of the two connecting rods two is abuttingly provided with a trigger plate, a contraction groove is formed through the inner wall of the sliding groove corresponding to the trigger plate, the outer wall of the trigger plate is slidingly matched with the inner wall of the contraction groove, installation grooves are symmetrically formed through the proximal end of each of the two connecting rods two, and the inner wall of the installation groove of the proximal end of each of the two connecting rods two is fixedly connected with the two ends of a tension spring respectively.

[0014] Further, the bottom of the trigger plate is fixedly connected with a trigger rod, the bottom of the trigger rod extends through the inside of the turnover rod to the outside of the turnover rod, the top of the trigger plate is fixedly connected with springs one at equal distances, and the top of the spring one is fixedly connected to the inner wall of the contraction groove.

[0015] Further, the outer wall of one end of the turnover rod close to the support plate is provided with a turnover gear, the front outer wall of the side frame is fixedly connected with a gear frame corresponding to the turnover gear, one side of the turnover gear is engaged with one side of the gear frame, the top of one end of the two connecting rods away from each other penetrates a clamping groove, the inner wall of the mounting groove one is fixedly connected with a reset plate corresponding to the clamping groove, and the top of the reset plate is inclined.

[0016] Further, the vertical stable component includes two rotating discs, the two rotating discs are rotatably connected to the outer wall of one end of the turnover rod close to the support plate, the end faces of the two rotating discs close to each other are fixedly connected to the end faces of the turnover gear respectively, the inner wall of the turnover gear is equally provided with a groove one, the inner wall of the groove one is fixedly connected with a spring two, the other end of the spring two is fixedly connected with an inclined gear one, the outer wall of the inclined gear one is slidably matched with the inner wall of the groove one, the outer wall of one end of the turnover rod close to the support plate is fixedly connected with an inclined gear two at equal distances, and the inclined gear one and the inclined gear two close to one side are both inclined.

[0017] Further, the inner wall of the support plate is provided with a groove two, the inner wall of the groove two is fixedly connected with a spring three, the bottom of the spring three is fixedly connected with a clamping column, the outer wall of the clamping column is slidably matched with the inner wall of the groove two, the outer wall of one end of the turnover rod close to the support plate is equally provided with a fixing groove corresponding to the clamping column, and the bottom of the clamping column is circular truncated cone-shaped.

[0018] Further, the double-sided cleaning component includes a pressure cylinder, the top of the pressure cylinder is fixedly installed on one side of the bottom of the steel plate frame, the inner wall of the pressure cylinder is slidably connected with a push-pull rod, the bottom of the push-pull rod is fixedly connected with a connecting plate, the bottom of the connecting plate is fixedly connected with a connecting rod three, the bottom of the connecting rod three is fixedly installed with a blowing nozzle corresponding to the integrated plate body, the top side of the pressure cylinder is fixedly connected with an air pipe, the other end of the air pipe is in communication with the input end of the blowing nozzle, the side of the connecting plate facing the connecting frame is provided with a groove three, the inner wall of the groove three is fixedly connected with a spring four, the other end of the spring four is fixedly connected with a contraction block, and the side of the contraction block facing the connecting frame is inclined.

[0019] The effects of the above scheme are as follows:

[0020] 1. The application can drive two clamping blocks to automatically clamp and position from the side wall of the circuit board through the lowering of the turnover rod during the printing process of the circuit board production, and can realize the turnover and surface changing operation during the rising and smearing of the tin paste through the cooperation of the turnover gear and the toothed rack, then the printed surface of the integrated board body is attached to the steel plate of the steel plate frame, and the tin paste printing mechanism is extruded and smeared by the scraper on the printed surface of the integrated board body, so that the workshop floating dust in the printing conveying process is difficult to adhere to the printed surface of the circuit board due to gravity, avoiding the attachment of the printed surface of the circuit board to the metal scraps and fiber dust floating in the production workshop, thereby helping to ensure the coating quality during the printing process of the circuit board.

[0021] 2. The application is provided with a vertical stable part, so that the turnover rod can overcome the turnover of the turnover gear after the printing of the circuit board is completed, and the stability during the lifting process is ensured through the cooperation of the clamping column and the fixed slot, avoiding the shear force generated by the re-turnover to damage the tin paste in the thixotropic recovery period after the printing of the circuit board, so as to prevent the collapse of the solder paste and ensure the integrity, realize the two modes of rising and turning over and not turning over, avoid the risk of gravity separation of the tin paste after smearing due to the downward direction, thereby helping to ensure the printing quality of the circuit board.

[0022] 3. During the clamping and lifting process, the cooperation of the contraction block and the connecting frame can first blow and clean the downward printed surface of the circuit board by using the blow head following type, keep the wind power uniform, loosen the dust itself, and more easily separate under the cooperation of gravity, so as to realize the pre-cleaning before tin paste smearing, further ensure the coating quality in the subsequent tin paste printing process, and can clean the other side of the circuit board after turning over, realize the double-sided cleaning of the circuit board in one smearing process, ensure the cleanliness of the surface of the circuit board, and bring protection for the subsequent process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure schematic diagram of the application;

[0024] Figure 2 It is the overall side structure schematic diagram of the application;

[0025] Figure 3 It is the installation position structure schematic diagram of the turnover rod and the turnover gear of the application;

[0026] Figure 4 It is the internal structure schematic diagram of the turnover rod of the application;

[0027] Figure 5 It is the structure schematic diagram of the movement relationship between the reset plate and the clamping groove of the application;

[0028] Figure 6Structure schematic view of the inside of the turnover gear of the present application;

[0029] Figure 7 Structure schematic view of the connecting relationship of the clamping column and the fixing groove of the present application;

[0030] Figure 8 Structure schematic view of the connecting relationship of the pressure cylinder and the blowing nozzle of the present application.

[0031] In the figure: 1, base; 2, mounting groove one; 3, conveying belt; 4, side frame; 5, steel plate frame; 6, solder paste printing mechanism; 10, limiting groove; 11, integrated plate body; 7, dustproof turnover part; 701, turnover rod; 702, support plate; 703, connecting frame; 704, clamping groove; 705, electric push rod; 706, sliding groove; 707, connecting rod one; 708, limiting groove; 709, clamping block; 710, reset plate; 711, connecting rod two; 712, trigger plate; 713, contraction groove; 714, mounting groove two; 715, tension spring; 716, trigger rod; 717, spring one; 718, turnover gear; 719, toothed frame; 8, vertical stabilizing part; 801, rotating disc; 802, groove one; 803, spring two; 804, inclined tooth one; 805, inclined tooth two; 806, groove two; 807, spring three; 808, clamping column; 809, fixing groove; 9, double-sided cleaning part; 901, pressure cylinder; 902, push-pull rod; 903, connecting plate; 904, connecting rod three; 905, blowing nozzle; 906, air pipe; 907, groove three; 908, spring four; 909, contraction block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely introduced below with reference to the drawings in the embodiments of the application.

[0033] Embodiment one, please refer to Figures 1-8 A self-positioning circuit board solder paste printing device, comprising a base 1, a conveying belt 3, a steel plate frame 5, a solder paste printing mechanism 6 and an integrated plate body 11, a mounting groove one 2 is formed in the top of the base 1, the conveying belt 3 is fixedly installed on the inner wall of the mounting groove one 2, a side frame 4 is fixedly connected to the top of the rear side of the base 1, the steel plate frame 5 is fixedly installed on the front side outer wall of the side frame 4, and the solder paste printing mechanism 6 is fixedly installed on the top of the side frame 4;

[0034] The front side outer wall of the side frame 4 is provided with a dustproof turnover part 7, the dustproof turnover part 7 comprises a turnover rod 701, one end of the turnover rod 701 is rotationally connected with a supporting plate 702, the supporting plate 702 is fixedly connected with a connecting frame 703 towards one side outer wall of the side frame 4, a limiting groove 10 is provided through the front side outer wall of the side frame 4 corresponding to the connecting frame 703, and the outer wall of the connecting frame 703 is slidingly connected to the inner wall of the limiting groove 10, one end output rod of an electric push rod 705 is fixedly connected to the bottom of the connecting frame 703, sliding grooves 706 are provided through the two end faces of the turnover rod 701, the inner walls of the sliding grooves 706 are symmetrically slidingly connected with connecting rods 707, the proximal end of each of the two connecting rods 707 is fixedly connected with a clamping block 709, limiting grooves 708 are symmetrically provided through the outer wall of the turnover rod 701 corresponding to the clamping blocks 709, and the outer wall of the clamping block 709 is slidingly connected to the inner wall of the limiting groove 708;

[0035] In the present embodiment, when the device is in use, first, the integrated plate body 11 is sequentially sent from right to left on the conveying belt 3 below the tin paste printing mechanism 6, and the integrated plate body 11 is placed on the conveying belt 3 with the printing surface facing down. When the integrated plate body 11 moves below the tin paste printing mechanism 6, the one end of the turnover rod 701 is rotationally connected with the supporting plate 702, the supporting plate 702 is fixedly connected with the connecting frame 703 towards one side outer wall of the side frame 4, the limiting groove 10 is provided through the front side outer wall of the side frame 4 corresponding to the connecting frame 703, and the outer wall of the connecting frame 703 is slidingly connected to the inner wall of the limiting groove 10. The electric push rod 705 is fixedly installed on the rear side outer wall of the base 1, and one end output rod of the electric push rod 705 is fixedly connected to the bottom of the connecting frame 703, so that the electric push rod 705 can drive the turnover rod 701 to move downward.

[0036] Then the end face of the turnover rod 701 is through the sliding groove 706, and the inner wall of the sliding groove 706 is symmetrically and slidably connected with the connecting rod one 707. The end of the two connecting rod ones 707 close to each other is fixedly connected with the clamping block 709. The outer wall of the turnover rod 701 corresponds to the clamping block 709 and is symmetrically and throughly provided with the limiting groove 708, and the outer wall of the clamping block 709 is slidably connected to the inner wall of the limiting groove 708. The side wall of the two clamping blocks 709 close to each other is fixedly connected with the connecting rod two 711. The end of the two connecting rod twos 711 close to each other is provided with the trigger plate 712. The inner wall of the sliding groove 706 is provided with the contraction groove 713 corresponding to the trigger plate 712, and the outer wall of the trigger plate 712 is slidably matched with the inner wall of the contraction groove 713. The end of the two connecting rod twos 711 close to each other is symmetrically provided with the mounting groove two 714. The inner wall of the sliding groove 706 is provided with the tension spring 715, and the two ends of the tension spring 715 are fixedly connected to the inner wall of the mounting groove two 714 of the end of the two connecting rod twos 711 close to each other, so that under normal circumstances, the two connecting rod twos 711 are separated and limited by the trigger plate 712, so that the two clamping blocks 709 pulled by the tension spring 715 are in a separated and unlocked state.

[0037] Then the bottom of the trigger plate 712 is fixedly connected with the trigger rod 716, and the bottom of the trigger rod 716 extends through the inside of the turnover rod 701 to the outside of the turnover rod 701. The top of the trigger plate 712 is fixedly connected with the spring one 717 at equal distances, and the top of the spring one 717 is fixedly connected to the inner wall of the contraction groove 713, so that when the turnover rod 701 is lowered to a certain height, i.e. when the integrated plate body 11 is about to be approached, the extension end of the trigger rod 716 will first contact the upper surface of the integrated plate body 11 at this time. At this time, the trigger plate 712 is moved up into the contraction groove 713, and the two ends of the trigger plate 712 will no longer press the end of the two connecting rod twos 711 close to each other, so that the two clamping blocks 709 at this time will be automatically clamped and positioned on the side wall of the integrated plate body 11 by the elastic tension of the tension spring 715.

[0038] When the clamping positioning is completed, the electric push rod 705 will control the turnover rod 701 to rise at this time, the outer wall of one end of the turnover rod 701 close to the support plate 702 is provided with a turnover gear 718, and the outer wall of the front side of the side frame 4 is fixedly connected with a toothed rack 719 corresponding to the turnover gear 718, and one side of the turnover gear 718 is engaged with one side of the toothed rack 719, so that during the rising process, the turnover rod 701 can be turned by one hundred and eighty degrees through the cooperation of the turnover gear 718 and the toothed rack 719, so that the turnover operation during the rising and coating of the solder paste is realized, and after the turnover is completed, the turnover gear 718 will be disengaged from the toothed rack 719 at this time, and the remaining distance will be driven by the continuous rising of the turnover rod 701 to make the printing surface of the integrated plate body 11 after turnover and the steel plate of the steel plate frame 5 adhere to each other, so that the solder paste printing mechanism 6 can perform doctor extrusion coating on the printing surface of the integrated plate body 11 through the steel plate.

[0039] So that the workshop floating dust in the printing and conveying process is difficult to adhere to the plate surface upward due to gravity, and the circuit board surface is prevented from being attached by the metal scraps and fiber dust floating in the production workshop, thereby helping to ensure the coating quality in the solder paste printing process.

[0040] In the second embodiment, a vertical stabilizing component 8 is arranged on the front side of the side frame 4, the vertical stabilizing component 8 comprises two turntables 801, the two turntables 801 are both rotationally connected to the outer wall of one end of the turnover rod 701 close to the support plate 702, the end faces of the two turntables 801 close to each other are fixedly connected with the two end faces of the turnover gear 718 respectively, the inner wall of the turnover gear 718 is equidistantly provided with a groove one 802, the inner wall of the groove one 802 is fixedly connected with a spring two 803, the other end of the spring two 803 is fixedly connected with an inclined tooth one 804, the outer wall of the inclined tooth one 804 is slidably matched with the inner wall of the groove one 802, the outer wall of the turnover rod 701 is equidistantly fixedly connected with an inclined tooth two 805 corresponding to the inclined tooth one 804, and the sides close to each other of the inclined tooth one 804 and the inclined tooth two 805 are both correspondingly inclined.

[0041] In this embodiment, after the integrated plate body 11 is printed, in order to avoid the situation that the integrated plate body 11 is driven to turn again when it is driven to return to the conveying belt 3, the shear force generated by the turning again damages the solder paste in the thixotropic recovery period after printing, and the solder paste after coating is prone to the risk of gravity separation due to the downward direction;

[0042] Two rotating discs 801 are connected to the outer wall of one end of the turnover rod 701 close to the support plate 702, and the end faces of the two rotating discs 801 close to each other are fixedly connected with the two end faces of the turnover gear 718 respectively. The inner wall of the turnover gear 718 is equidistantly provided with a groove one 802, and the inner wall of the groove one 802 is fixedly connected with a spring two 803. The other end of the spring two 803 is fixedly connected with an inclined tooth one 804, and the outer wall of the inclined tooth one 804 slides with the inner wall of the groove one 802. The outer wall of the turnover rod 701 is equidistantly fixedly connected with an inclined tooth two 805 corresponding to the inclined tooth one 804, and the side of the inclined tooth one 804 and the inclined tooth two 805 close to each other is correspondingly inclined, so that when the integrated plate body 11 is normally lifted to prepare for the tin paste coating step, the inclined tooth one 804 and the inclined tooth two 805 are touched to drive the turnover gear 718 to rotate normally;

[0043] When the integrated plate body 11 is lowered to the conveying belt 3 again, the inclined tooth one 804 and the inclined tooth two 805 are touched to drive, and the driving strength is weak at this time. In this process, the inner wall of the support plate 702 is provided with a groove two 806, and the inner wall of the groove two 806 is fixedly connected with a spring three 807. The bottom of the spring three 807 is fixedly connected with a clamping column 808, and the outer wall of the clamping column 808 slides with the inner wall of the groove two 806. The outer wall of one end of the turnover rod 701 close to the support plate 702 is equidistantly provided with a fixed groove 809 corresponding to the clamping column 808, and the bottom of the clamping column 808 is a circular truncated cone. In the lifting process, that is, in the forced driving state, the turnover rod 701 is driven to rotate, and the clamping column 808 is extruded by the fixed groove 809, so that the clamping column 808 is retracted into the groove two 806, and the normal driving is completed. In the descending process, that is, in the weak driving state, the clamping column 808 is stably clamped in the fixed groove 809 under the driving of the spring three 807, so that the turnover gear 718 does not drive the turnover rod 701 to rotate, thereby avoiding the shear force generated by the re-turnover to damage the tin paste in the thixotropic recovery period after printing, so as to prevent the solder paste from collapsing, ensure the integrity of the molding, realize the two modes of lifting and not turning down, and avoid the risk of tin paste separation due to gravity to the downward direction after coating;

[0044] Further, in the process of the turnover gear 718 not being in contact with the gear frame 719, the rotation angle of the turnover rod 701 will be limited through the cooperation of the fixing groove 809 and the clamping column 808, avoiding the arbitrary rotation of the turnover rod 701 after disengagement, that is, to ensure the stability when the remaining distance will be driven by the continuous rising of the turnover rod 701 to make the printed surface of the integrated plate body 11 after turnover adhere to the steel plate of the steel plate frame 5, so as to be squeezed and coated by the doctor blade of the tin paste printing mechanism 6 on the printed surface of the integrated plate body 11 through the steel plate;

[0045] Further, in the process of the turnover gear 718 not being in contact with the gear frame 719, the rotation angle of the turnover rod 701 will be limited through the cooperation of the fixing groove 809 and the clamping column 808, avoiding the arbitrary rotation of the turnover rod 701 after disengagement, that is, to ensure the stability when the remaining distance will be driven by the continuous rising of the turnover rod 701 to make the printed surface of the integrated plate body 11 after turnover adhere to the steel plate of the steel plate frame 5, so as to be squeezed and coated by the doctor blade of the tin paste printing mechanism 6 on the printed surface of the integrated plate body 11 through the steel plate of the tin paste printing mechanism 6.

[0046] In example three, on the basis of the above examples, the rear outer wall of the side frame 4 is provided with a double-sided cleaning component 9, which includes a pressure cylinder 901, and the top of the pressure cylinder 901 is fixedly installed on one side of the bottom of the steel plate frame 5. The inner wall of the pressure cylinder 901 is slidingly connected with a push-pull rod 902, and the bottom of the push-pull rod 902 is fixedly connected with a connecting plate 903. The bottom of the connecting plate 903 is fixedly connected with a connecting rod three 904, and the bottom of the connecting rod three 904 is fixedly installed with a blowing nozzle 905 corresponding to the integrated plate body 11. The top side of the pressure cylinder 901 is fixedly connected with an air pipe 906, and the other end of the air pipe 906 is in communication with the input end of the blowing nozzle 905. The side of the connecting plate 903 facing the connecting frame 703 is provided with a recess three 907, and the inner wall of the recess three 907 is fixedly connected with a spring four 908. The other end of the spring four 908 is fixedly connected with a contraction block 909, and the side of the contraction block 909 facing the connecting frame 703 is inclined;

[0047] In the embodiment, in the normal state, the push-pull rod 902 is in the maximum extended state and cannot continue to extend downward, and the contraction block 909 is in the extended state through the spring four 908 and covers the movement path of the connecting frame 703. At this time, when the turnover lever 701 is about to drop to the maximum state, the connecting frame 703 will be in contact with the contraction block 909, so that the contraction block 909 is pressed into the groove three 907 through the corresponding inclined surface of the contraction block 909. When the turnover lever 701 drops to the maximum state, the integrated board body 11 is clamped, and the contraction block 909 is reset through the spring four 908 and located on the upper surface of the connecting frame 703 at this time. When the integrated board body 11 is lifted by the turnover lever 701, the connecting frame 703 is synchronously driven by the contraction block 909 to the air blowing nozzle 905 below the lower surface of the integrated board body 11, and the air in the pressure cylinder 901 is extruded and pushed by the push-pull rod 902, so that the air blowing nozzle 905 follows the downward printing surface of the circuit board to blow and clean the dust, and the dust is more easily separated under the cooperation of gravity, so as to realize the pre-cleaning before the tin paste is applied, further ensure the coating quality in the subsequent tin paste printing process, and the other side of the circuit board can be cleaned again after the turnover, so that the circuit board is cleaned on both sides in one application process, and the cleanliness of the circuit board surface is ensured to ensure the subsequent process.

[0048] When the integrated board body 11 is turned over, there is still a certain remaining distance after the turnover gear 718 is separated from the toothed frame 719. In the remaining distance, the push-pull rod 902 is contracted to the maximum state and cannot continue to contract, so that the connecting frame 703 extrudes the contraction block 909 into the groove three 907, so that the connecting plate 903 is separated from the connecting frame 703. At this time, under the action of gravity, the air blowing nozzle 905 automatically falls to reset the push-pull rod 902;

[0049] Further, when the integrated board body 11 printed is moved to the left by the conveying belt 3, the air blowing nozzle 905 is lifted by the connecting frame 703 through the synchronously lifted turnover lever 701, so as to avoid blocking the next integrated board body 11 to be printed. When the next integrated board body 11 to be printed moves to the printing position, the air blowing nozzle 905 automatically falls to reset the push-pull rod 902 to the maximum state, so as to be ready for the next double-sided cleaning.

[0050] The working principle of the present application is that: firstly, the integrated plate body 11 is sequentially sent into the lower part of the tin paste printing mechanism 6 through the conveying belt 3, and the integrated plate body 11 is placed on the conveying belt 3 with the printing surface downward, when the integrated plate body 11 moves to the lower part of the tin paste printing mechanism 6, the downward movement of the turnover rod 701 is driven by the electric push rod 705;

[0051] When the turnover rod 701 is lowered to a certain height, that is, it is about to approach the integrated plate body 11, the extended end of the trigger rod 716 will first contact the upper surface of the integrated plate body 11 at this time, the electric push rod 705 drives the turnover rod 701 to continue to descend until it is fully attached to the upper surface of the integrated plate body 11, at this time the trigger rod 716 is extruded by the upper surface of the integrated plate body 11, so that the trigger plate 712 moves upward into the contraction groove 713, at this time the two ends of the trigger plate 712 will no longer press the one end of the two connecting rods 711 close to each other, so that the two clamping blocks 709 at this time will be automatically clamped and positioned on the side wall of the integrated plate body 11 by the elastic tension of the tension spring 715;

[0052] When the clamping and positioning is completed, the electric push rod 705 will control the turnover rod 701 to rise at this time, the turnover rod 701 can be turned by one hundred and eighty degrees through the cooperation of the turnover gear 718 and the toothed rack 719, so that the turnover rod 701 can be turned by one hundred and eighty degrees, and the turnover rod 701 can be turned by one hundred and eighty degrees. The operation of turning over the surface during the rising and smearing tin paste, after the turnover is completed, the turnover gear 718 will be disengaged from the toothed rack 719 at this time, and the remaining distance will be brought by the continuous rising of the turnover rod 701 to drive the printing surface of the turned integrated plate body 11 to be attached to the steel plate of the steel plate rack 5, so that the tin paste printing mechanism 6 can press and smear the printing surface of the integrated plate body 11 through the steel plate;

[0053] When the turnover rod 701 drives the integrated plate body 11 to descend and return to the conveying belt 3, the transmission strength at this time will be in a weak state through the collision of the inclined surfaces of the inclined teeth one 804 and the inclined teeth two 805, so that the clamping column 808 is stably clamped in the fixed groove 809 under the driving of the spring three 807, avoiding the rotation of the turnover gear 718 driving the turnover rod 701, thereby avoiding the shear force generated by the turnover again to damage the tin paste in the thixotropic recovery period after printing, so as to avoid the collapse of the solder paste and ensure the integrity of the molding, realize the two modes of rising and turning over and not turning over when descending, and avoid the risk of gravity separation of the smeared tin paste due to the downward direction;

[0054] When the turnover rod 701 is lowered to the maximum state, the integrated plate body 11 will be clamped at this time, and the shrink block 909 will be reset by the spring four 908 and located on the upper surface of the connecting frame 703 at this time, when the integrated plate body 11 is lifted by the turnover rod 701, the connecting frame 703 will drive the air blowing nozzle 905 on the lower surface of the integrated plate body 11 to rise synchronously through the shrink block 909, and the air in the pressure cylinder 901 is extruded and pushed by the push-pull rod 902, so that the air blowing nozzle 905 follows the downward printing surface of the circuit board to blow and clean, loosen the dust itself, and is more easily separated under the cooperation of gravity, to realize the pre-cleaning before the tin paste is smeared, further ensure the coating quality in the subsequent tin paste printing process, and the other side of the circuit board can be cleaned again after turning over, realize the double-sided cleaning of the circuit board in one smearing process, ensure the cleanliness of the surface of the circuit board, and bring protection for the subsequent process.

[0055] It should be noted that each device in the application is a common market device, which can be selected according to the needs during specific use, and the circuit connection relationship of each device is a simple series and parallel connection circuit, and there is no innovation point in the circuit connection part, which can be easily realized by those skilled in the art, belongs to the prior art, and will not be described in detail.

[0056] Although the application is disclosed as above, the application is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the application, therefore the protection scope of the application should be limited by the scope defined in the claims.

Claims

1. A self-positioning circuit board solder paste printing equipment, comprising a base (1), a conveyor belt (3), a steel plate frame (5), a solder paste printing mechanism (6), and an integrated board body (11), characterized in that: The base (1) has an installation groove (2) on its top. The conveyor belt (3) is fixedly installed on the inner wall of the installation groove (2). A side frame (4) is fixedly connected to the top rear side of the base (1). The steel plate frame (5) is fixedly installed on the outer front side of the side frame (4). The solder paste printing mechanism (6) is fixedly installed on the top of the side frame (4). The front outer wall of the side frame (4) is provided with a dustproof flipping component (7) to automatically clamp and position the side wall of the integrated plate (11) after it is fully lowered, and to automatically complete the alignment process of the surface to be processed of the integrated plate (11) during the rising process. The side frame (4) is provided with a vertical stabilizing component (8) on the front side to switch control after solder paste printing so that the printed surface of the integrated board (11) is vertically lowered while keeping it facing upward. The front outer wall of the side frame (4) is provided with a double-sided cleaning component (9) to perform follow-up cleaning on the integrated plate (11) when it is manufactured and in place.

2. The self-positioning circuit board solder paste printing equipment according to claim 1, characterized in that: The dustproof flipping component (7) includes a flipping rod (701), and a support plate (702) is rotatably connected to the outer wall of one end of the flipping rod (701). A connecting frame (703) is fixedly connected to the outer wall of the support plate (702) facing the side frame (4). A limiting groove (10) is opened through the front outer wall of the side frame (4) corresponding to the connecting frame (703), and the outer wall of the connecting frame (703) is slidably connected to the inner wall of the limiting groove (10). An electric push rod (705) is fixedly installed on the rear outer wall of the base (1), and the electric push rod (705) One end of the output rod is fixedly connected to the bottom of the connecting frame (703). The two ends of the flipping rod (701) are provided with sliding grooves (706), and the inner wall of the sliding groove (706) is symmetrically connected with connecting rod 1 (707). The two ends of the two connecting rod 1 (707) that are close to each other are fixedly connected with clamping blocks (709). The outer wall of the flipping rod (701) is symmetrically provided with limiting grooves (708) corresponding to the clamping blocks (709), and the outer wall of the clamping blocks (709) is slidably connected to the inner wall of the limiting grooves (708).

3. The self-positioning circuit board solder paste printing equipment according to claim 2, characterized in that: Two connecting rods (711) are fixedly connected to the outer walls of the two clamping blocks (709) on their adjacent sides. A trigger plate (712) is attached to one end of the two connecting rods (711) that are close to each other. A shrinkage groove (713) is opened on the inner wall of the slide groove (706) corresponding to the trigger plate (712), and the outer wall of the trigger plate (712) slides and matches the inner wall of the shrinkage groove (713). A mounting groove (714) is symmetrically opened on one end of the two connecting rods (711) that are close to each other. A tension spring (715) is provided on the inner wall of the slide groove (706), and the two ends of the tension spring (715) are fixedly connected to the inner wall of the mounting groove (714) at one end of the two connecting rods (711) that are close to each other.

4. The self-positioning circuit board solder paste printing equipment according to claim 3, characterized in that: The bottom of the trigger plate (712) is fixedly connected to a trigger rod (716), and the bottom of the trigger rod (716) extends through the interior of the flip rod (701) to the exterior of the flip rod (701). The top of the trigger plate (712) is fixedly connected to a spring (717) at equal intervals, and the top of the spring (717) is fixedly connected to the inner wall of the shrinkage groove (713).

5. The self-positioning circuit board solder paste printing equipment according to claim 4, characterized in that: A flipping gear (718) is provided on the outer wall of one end of the flipping rod (701) near the support plate (702). A gear frame (719) is fixedly connected to the front outer wall of the side frame (4) corresponding to the flipping gear (718). One side of the flipping gear (718) meshes with one side of the gear frame (719). A slot (704) is provided at the top of the two connecting rods (707) that are far apart. A reset plate (710) is symmetrically fixedly connected to the inner wall of the mounting groove (2) corresponding to the slot (704). The top of the reset plate (710) is inclined.

6. The self-positioning circuit board solder paste printing equipment according to claim 5, characterized in that: The vertical stabilizing component (8) includes two turntables (801). Both turntables (801) are rotatably connected to the outer wall of one end of the flipping rod (701) near the support plate (702). The end faces of the two turntables (801) that are close to each other are fixedly connected to the two end faces of the flipping gear (718). The inner wall of the flipping gear (718) is provided with grooves (802) at equal intervals. A spring (803) is fixedly connected to the inner wall of the groove (802). The other end of the spring (803) is fixedly connected to a beveled tooth (804). The outer wall of the beveled tooth (804) slides against the inner wall of the groove (802). The outer wall of the flipping rod (701) is fixedly connected to beveled teeth (805) at equal intervals corresponding to beveled teeth (804). The sides of beveled teeth (804) and beveled teeth (805) that are close to each other are both beveled.

7. The self-positioning circuit board solder paste printing equipment according to claim 6, characterized in that: The inner wall of the support plate (702) is provided with a groove 2 (806), and a spring 3 (807) is fixedly connected to the inner wall of the groove 2 (806). A locking post (808) is fixedly connected to the bottom of the spring 3 (807), and the outer wall of the locking post (808) slides against the inner wall of the groove 2 (806). The outer wall of the flipping rod (701) near the support plate (702) is provided with a fixing groove (809) at equal distances from the locking post (808), and the bottom of the locking post (808) is frustum-shaped.

8. The self-positioning circuit board solder paste printing equipment according to claim 7, characterized in that: The double-sided cleaning component (9) includes a pressure cylinder (901), and the top of the pressure cylinder (901) is fixedly installed on the bottom side of the steel plate frame (5). A push-pull rod (902) is slidably connected to the inner wall of the pressure cylinder (901), and a connecting plate (903) is fixedly connected to the bottom of the push-pull rod (902). A connecting rod three (904) is fixedly connected to the bottom of the connecting plate (903), and an air blowing nozzle (905) is fixedly installed on the bottom of the connecting rod three (904) corresponding to the integrated plate body (11). An air pipe (906) is fixedly connected to the top side of the pressure cylinder (901), and the other end of the air pipe (906) is connected to the input end of the air blowing nozzle (905). A groove three (907) is provided on the side of the connecting plate (903) facing the connecting frame (703), and a spring four (908) is fixedly connected to the inner wall of the groove three (907). A shrink block (909) is fixedly connected to the other end of the spring four (908), and the shrink block (909) is inclined on the side facing the connecting frame (703).

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