Solder paste printing and coating device for flexible circuit board production

Abstract

The invention discloses a solder paste printing and coating device for flexible circuit board production, and particularly relates to the technical field of solder paste printing and coating devices.The solder paste printing and coating device comprises two C-shaped plates, the upper ends of the two C-shaped plates are jointly and fixedly connected with a surrounding plate, the inner surface of the surrounding plate is provided with a coating assembly, and the lower ends of the two C-shaped plates are jointly and fixedly provided with a stirring transmission assembly; the lower portions of the ends, close to each other, of the two C-shaped plates are jointly and fixedly provided with a limiting assembly. According to the solder paste printing and coating device for flexible circuit board production, by means of the arranged coating assembly, when solder paste coating is conducted on a flexible circuit board, solder paste can be fully attached to the corresponding position of the circuit board, meanwhile, by means of the arranged stirring and conveying assembly, redundant solder paste generated during coating can be stirred and conveyed, and therefore the production efficiency of the flexible circuit board is improved. And the situation that the solder paste is accumulated on one side for a long time and is solidified is avoided, the stirring and conveying assembly can stir and convey the redundant solder paste into the coating assembly, and waste of the solder paste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of solder paste printing and coating devices, and in particular to a solder paste printing and coating device for producing flexible circuit boards. Background Art

[0002] In the production of flexible circuit boards, the solder paste printing and coating device is used to accurately apply solder paste to specific locations on the surface of the circuit board. The device usually consists of a solder paste storage system, a coating platform, a precision printing die, a scraper system, etc. The solder paste is evenly coated on the pads on the circuit board through the scraper system, ensuring that there is enough solder paste on each pad for subsequent component soldering.

[0003] The key to the equipment is to accurately control the amount and uniformity of solder paste coating to ensure welding quality. The circuits and pads in the flexible circuit board production process are usually small and complex. The solder paste printing device needs to have high precision, high stability and flexibility to adapt to different boards. At the same time, the equipment also needs to consider heat control to avoid premature drying or overflow of the solder paste, thereby affecting the subsequent welding effect. In short, the solder paste printing and coating device is one of the indispensable key equipment in the production of flexible circuit boards.

[0004] The main drawback of existing technology lies in the lack of a complete solder paste recycling system. After printing, the excess solder paste carried back by the scraper in traditional equipment is directly exposed to the air, causing oxidation and deterioration of the material while preventing effective recycling. Due to the lack of an integrated collection and filtration device and intelligent stirring system, this residual solder paste cannot be purified to remove impurities or restored to optimal printing condition through viscosity adjustment. This leads to unnecessary material loss during the production process and affects the stability of soldering quality during secondary use. Summary of the Invention

[0005] The main purpose of the present invention is to provide a solder paste printing and coating device for flexible circuit board production, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A solder paste printing and coating device for the production of flexible circuit boards includes two C-shaped plates, the upper ends of the two C-shaped plates are fixedly connected to a surrounding plate, the upper parts of the two C-shaped plates close to each other are fixedly connected to a coating plate, the inner surface of the surrounding plate is provided with a coating assembly, the lower ends of the two C-shaped plates are fixedly installed with a stirring and transmission assembly, and the lower parts of the two C-shaped plates close to each other are fixedly installed with a limiting assembly.

[0008] Preferably, the paint assembly includes a trapezoidal material storage box, a mounting hole 1 is opened on the rear side of the middle part of the upper end of the trapezoidal material storage box, a hollow threaded cylinder is fixedly connected to the inner surface of the mounting hole 1, a threaded cap is threadedly connected to the inner surface of the hollow threaded cylinder, a mounting hole 2 is opened on the upper side of the middle part of the rear end of the trapezoidal material storage box, a material control assembly is fixedly installed on the inner surface of the trapezoidal material storage box, and a guide assembly is fixedly installed on the lower front end and the lower rear end of the trapezoidal material storage box.

[0009] Preferably, the material control assembly includes a blanking plate that is fixedly connected to the middle of the front side wall and the middle of the rear side wall of the inner surface of the trapezoidal material storage box, a plurality of discharge ports are opened in a linear array in the middle of the upper end of the blanking plate, a plurality of guide holes are opened in a linear array on the left side of the upper end and the right side of the upper end of the blanking plate, the inner surfaces of several guide holes are slidably connected with guide rods, the lower ends of several guide rods are fixedly connected to the special-shaped plate, the upper ends of several guide rods are fixedly connected to the baffle, the middle of the upper end of the baffle is fixedly connected to the semicircular plate, the left and right ends of the lower end of the blanking plate are fixedly connected to the linear array of several springs, the other ends of several springs are respectively fixedly connected to the outer surfaces of several guide rods, the middle of the lower end of the special-shaped plate is fixedly connected to the main scraper, and the lower front end and the lower rear end of the main scraper are fixedly connected to the auxiliary scraper.

[0010] Preferably, the guide assembly includes a rectangular plate fixedly connected to the lower front end and the lower rear end of the trapezoidal storage box, the left and right sides of the lower ends of the two rectangular plates are fixedly connected to sliding rods, the outer surfaces of the two sliding rods on the same side are slidably connected to the limiting cylinders, the lower ends of the two limiting cylinders on the same side are fixedly connected to the slider, and the bottom walls of the two limiting cylinders on the same side and the lower ends of the two sliding rods on the same side are fixedly connected to spring 2.

[0011] Preferably, a slide groove is provided in the middle of the horizontal part on the front end and the middle of the horizontal part on the rear end of the enclosure, and the two sliders on the same side are respectively slidably connected to the inner surface of the slide groove on the same side.

[0012] Preferably, the stirring and transmitting assembly includes two storage boxes fixedly connected at the lower ends of the C-shaped plates, the middle parts of the rear side walls of the inner surfaces of the two storage boxes are rotatably connected to an augers, the rear sides of the inner surfaces of the two storage boxes are fixedly connected to a fixed plate, the front end of the fixed plate on the same side is rotatably connected to the rear end of the augers on the same side, and the rear edges of the inner surfaces of the two storage boxes are commonly fixedly connected with an eight-shaped tube, two hollow blocks are fixedly connected to the middle part of the rear end of the enclosure plate, the inner surfaces of the two hollow blocks are fixedly connected to the outer surfaces of the eight-shaped tube, the middle part of the upper side of the outer surface of the eight-shaped tube is fixedly connected to a bellows communicated with its inner cavity, the other end of the bellows is fixedly connected to the inner surface of the second mounting hole through a connecting tube, the front ends of the two augers are fixedly connected to a drive motor, and the two drive motors are fixedly installed at the front end of the storage box.

[0013] Preferably, the limit assembly includes a supporting plate that is jointly fixedly connected at the lower end of one end of the two C-shaped plates close to each other, and a placement groove is provided in the middle of the upper end of the supporting plate, and the left side wall and the right side wall of the inner surface of the placement groove are both provided with a slide groove 2, and the front side wall and the rear side wall of the inner surface of the two slide grooves are both rotatably connected to the two bidirectional threaded rods, and the front ends of the two bidirectional threaded rods pass through the slide groove 2 on the same side and extend to the outside, and the outer front sides and the outer rear sides of the two bidirectional threaded rods are jointly threadedly connected to the splint, and the two splints are slidably connected to the inner surface of the slide groove 2, and the front ends of the two bidirectional threaded rods are fixedly connected to the pulleys, and the outer surfaces of the two pulleys are jointly wrapped with a transmission belt, and the front end of the pulley on the right side is fixedly connected to the turntable 1.

[0014] Preferably, the middle part of the lower end of the supporting plate is rotatably connected to a bevel gear 1, the inner surface of the bevel gear 1 is threadedly connected to a threaded push rod, the middle part of the lower end of the supporting plate is fixedly connected to a limit plate, and a limit groove is provided in the middle part of the lower end of the limit plate, and the lower part of the outer surface of the threaded push rod is slidably connected to the inner surface of the limit groove, and the upper end of the threaded push rod passes through the lower end of the supporting plate and extends to the inner cavity of the supporting plate, and a plurality of hollow fixed platforms are fixedly connected to a linear array on the rear side of the middle part of the lower end of the supporting plate, and a transmission rod is rotatably connected to the inner surfaces of the plurality of hollow fixed platforms together, and the rear end of the transmission rod is fixedly connected to a bevel gear 2, and the bevel gear 2 is meshed with the bevel gear 1, and the front end of the transmission rod is fixedly connected to a turntable 2.

[0015] Preferably, the special-shaped plate is arranged in a diamond shape, and the lower part of the outer surface of the special-shaped plate is in contact with the lower part of the inner surface of the trapezoidal material storage box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This solution uses a coating component to fully adhere the solder paste to the corresponding position of the circuit board when coating the flexible circuit board with solder paste. During the coating process, the coating component only needs to be manually pulled back and forth to complete the coating process. During the coating process, the excess solder paste can be scraped into the stirring and transmission component. At the same time, the stirring and transmission component can be used to stir and transmit the excess solder paste generated during coating to prevent the solder paste from accumulating on one side for a long time and causing it to solidify. The stirring and transmission component can also stir and transmit the excess solder paste into the coating component, reducing the waste of solder paste and ensuring that the solder paste is always in a softened state for subsequent coating processing.

[0018] 2. The present invention provides a limiting assembly, and when the circuit board is subjected to coating processing, the circuit board can be placed in the limiting assembly in advance, and the circuit board can be lifted up in advance so that the side of the circuit board that needs to be tinned fits with the lower end of the coating board. After the limiting assembly lifts the circuit board, the circuit board can also be limited and fixed, thereby avoiding the circuit board from being offset during the coating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a coating component of the present invention;

[0022] Figure 4 This is a schematic diagram of the overall structure of the coating assembly of the present invention;

[0023] Figure 5 This is a schematic diagram of the overall structure of the stirring and transmission component of the present invention;

[0024] Figure 6 It is a schematic cross-sectional view of the local structure of the position limiting assembly of the present invention;

[0025] Figure 7 This is a schematic diagram of the installation of the local structure of the limit assembly of the present invention;

[0026] Figure 8 This is a schematic diagram of the overall structure of the material control component of the present invention;

[0027] Figure 9 For the present invention Figure 4 A schematic diagram of the structure at center A;

[0028] Figure 10 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 11 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure: 1, C-shaped plate; 2, enclosure plate; 21, chute 1; 3, coating plate; 4, coating assembly; 41, trapezoidal storage box; 42, mounting hole 1; 43, hollow threaded cylinder; 44, threaded cap; 45, mounting hole 2; 46, material control assembly; 461, blanking plate; 462, discharge port; 463, guide hole; 464, guide rod; 465, spring 1; 466, baffle; 467, semicircular plate; 468, special-shaped plate; 469, main scraper; 460, auxiliary scraper; 47, guide assembly; 471, rectangular plate; 472, slide rod; 473, limit cylinder; 474, Slider; 475, spring 2; 5, stirring transmission assembly; 51, storage box; 52, auger; 53, fixed plate; 54, figure eight tube; 55, hollow block; 56, bellows; 6, limit assembly; 61, load-bearing plate; 62, placement groove; 63, slide 2; 64, two-way threaded rod; 65, splint; 66, pulley; 67, transmission belt; 68, turntable 1; 691, bevel gear 1; 692, threaded top rod; 693, limit plate; 694, hollow fixed table; 695, transmission rod; 696, turntable 2; 697, limit groove; 698, bevel gear 2. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] Example 1, as Figure 1 and Figure 2 As shown, a solder paste printing and coating device for flexible circuit board production includes two C-shaped plates 1, the upper ends of the two C-shaped plates 1 are fixedly connected to a surrounding plate 2, and the upper ends of the two C-shaped plates 1 close to each other are fixedly connected to a coating plate 3. The inner surface of the surrounding plate 2 is provided with a coating component 4. Through the provided coating component 4, when the flexible circuit board is coated with solder paste, the solder paste can be fully adhered to the corresponding position of the circuit board. During the coating process, the coating process can be completed by manually pulling the coating component 4 back and forth, and the excess solder paste is scraped into the stirring and transmission component 5 during the coating process.

[0033] The lower ends of the two C-shaped plates 1 are fixedly mounted with a stirring and transmitting assembly 5. The stirring and transmitting assembly 5 can stir and transmit the excess solder paste generated during coating, thereby preventing the solder paste from accumulating on one side for a long time and causing it to solidify. The stirring and transmitting assembly 5 can also stir and transmit the excess solder paste into the coating assembly 4, thereby reducing the waste of solder paste and ensuring that the solder paste is always in a softened state for subsequent coating processing.

[0034] The lower parts of the ends of the two C-shaped plates 1 that are close to each other are jointly fixed with a limiting component 6. Through the setting of the limiting component 6, when the circuit board is coated, the circuit board can be placed in the limiting component 6 in advance, and the circuit board can be lifted up in advance so that the side of the circuit board that needs to be tinned is in contact with the lower end of the coating plate 3. After the limiting component 6 lifts the circuit board, the circuit board can also be limited and fixed, thereby avoiding the circuit board from being offset during the coating process.

[0035] Embodiment 2: Based on embodiment 1, this embodiment is for achieving the purpose of manually coating the circuit board and fully coating it.

[0036] For details, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 9 The paint assembly 4 includes a trapezoidal material storage box 41, a mounting hole 1 42 is opened on the rear side of the middle of the upper end of the trapezoidal material storage box 41, a hollow threaded cylinder 43 is fixedly connected to the inner surface of the mounting hole 1 42, a threaded cap 44 is threadedly connected to the inner surface of the hollow threaded cylinder 43, a mounting hole 2 45 is opened on the upper side of the middle of the rear end of the trapezoidal material storage box 41, a material control assembly 46 is fixedly installed on the inner surface of the trapezoidal material storage box 41, and a guide assembly 47 is fixedly installed on the lower front end and the lower rear end of the trapezoidal material storage box 41.

[0037] Furthermore, the material control assembly 46 includes a blanking plate 461 fixedly connected to the middle of the front side wall and the middle of the rear side wall of the inner surface of the trapezoidal material storage box 41. A plurality of discharge ports 462 are linearly arranged in the middle of the upper end of the blanking plate 461. A plurality of guide holes 463 are linearly arranged on the left and right sides of the upper end of the blanking plate 461. The inner surfaces of the plurality of guide holes 463 are slidably connected to guide rods 464. The lower ends of the plurality of guide rods 464 are fixedly connected to the special-shaped plates 468. The upper ends of several guide rods 464 are fixedly connected to a baffle 466, and the middle part of the upper end of the baffle 466 is fixedly connected to a semicircular plate 467. The left and right ends of the lower end of the blanking plate 461 are fixedly connected to a plurality of springs 465 in a linear array, and the other ends of the plurality of springs 465 are respectively fixedly connected to the outer surfaces of several guide rods 464. The middle part of the lower end of the special-shaped plate 468 is fixedly connected to the main scraper 469, and the lower front end and the lower rear end of the main scraper 469 are fixedly connected to the auxiliary scraper 460.

[0038] Furthermore, the guide assembly 47 includes a rectangular plate 471 fixedly connected to the lower front end and the lower rear end of the trapezoidal storage box 41, and the left and right sides of the lower ends of the two rectangular plates 471 are fixedly connected to the sliding rods 472, the outer surfaces of the two sliding rods 472 on the same side are slidably connected to the limiting cylinder 473, the lower ends of the two limiting cylinders 473 on the same side are fixedly connected to the slider 474, and the bottom walls of the two limiting cylinders 473 on the same side and the lower ends of the two sliding rods 472 on the same side are fixedly connected to the spring 2 475.

[0039] Furthermore, a slide groove 21 is provided in the middle of the upper front horizontal portion and the middle of the upper rear horizontal portion of the enclosure 2, and two sliders 474 on the same side are slidably connected to the inner surface of the slide groove 21 on the same side;

[0040] Furthermore, the limiting assembly 6 includes a supporting plate 61 that is fixedly connected to the lower part of one end of two C-shaped plates 1 that are close to each other, and a placement groove 62 is provided in the middle of the upper end of the supporting plate 61. The left side wall and the right side wall of the inner surface of the placement groove 62 are both provided with a slide groove 2 63. The front side wall and the rear side wall of the inner surface of the two slide grooves 2 63 are both rotatably connected with a two-way threaded rod 64. The front ends of the two two-way threaded rods 64 pass through the slide groove 2 63 on the same side and extend to the outside. The outer front side and the outer rear side of the two two-way threaded rods 64 are both threadedly connected with a splint 65. The two splints 65 are slidably connected to the inner surface of the slide groove 2 63. The front ends of the two two-way threaded rods 64 are fixedly connected to pulleys 66. The outer surfaces of the two pulleys 66 are commonly wrapped with a transmission belt 67. The front end of the right pulley 66 is fixedly connected to a turntable 1 68.

[0041] Furthermore, a bevel gear 691 is rotatably connected to the middle part of the lower end of the supporting plate 61, and a threaded push rod 692 is threadedly connected to the inner surface of the bevel gear 691. A limiting plate 693 is fixedly connected to the middle part of the lower end of the supporting plate 61. A limiting groove 697 is provided in the middle part of the lower end of the limiting plate 693. The lower part of the outer surface of the threaded push rod 692 is slidably connected to the inner surface of the limiting groove 697. The upper end of the threaded push rod 692 passes through the lower end of the supporting plate 61 and extends to the inner cavity of the supporting plate 61. A plurality of hollow fixed platforms 694 are fixedly connected to the linear array on the rear side of the middle part of the lower end of the supporting plate 61. The inner surfaces of the plurality of hollow fixed platforms 694 are rotatably connected to a transmission rod 695. The rear end of the transmission rod 695 is fixedly connected to a bevel gear 2 698. The bevel gear 2 698 is meshed with the bevel gear 1 691. The front end of the transmission rod 695 is fixedly connected to a turntable 2 696.

[0042] Furthermore, the special-shaped plate 468 is arranged in a diamond shape, and the lower part of the outer surface of the special-shaped plate 468 is in contact with the lower part of the inner surface of the trapezoidal storage box 41.

[0043] When solder paste coating is required on the surface of the circuit board, the threaded cap 44 is first rotated to open the inner surface of the hollow threaded barrel 43, and then the pre-stirred and softened solder paste is poured from the hollow threaded barrel 43 into the inner cavity of the trapezoidal storage box 41, and then the threaded cap 44 is rotated to cover the surface of the hollow threaded barrel 43;

[0044] Then, the circuit board to be coated is placed with the coating surface facing upwards inside the placement groove 62. Then, by rotating the second turntable 696, since a number of hollow fixed platforms 694 are fixedly connected to the lower end of the carrier plate 61, and the transmission rod 695 is rotatably connected to the inner surfaces of the several hollow fixed platforms 694, the second turntable 696 can drive the transmission rod 695 to rotate, and then the transmission rod 695 drives the second bevel gear 698 to rotate. Since the second bevel gear 698 and the first bevel gear 691 are meshed with each other, the first bevel gear 691 also rotates accordingly, and the lower part of the outer surface of the threaded push rod 692 threadedly connected to the inner surface of the first bevel gear 691 is slidably connected to the inner surface of the limiting groove 697. Therefore, when the first bevel gear 691 rotates, the threaded push rod 692 can move upward under the limiting action of the limiting groove 697.

[0045] Then, the purpose of lifting the circuit board by the upper end of the threaded push rod 692 is achieved. When the circuit board is lifted, it is only necessary to make the upper surface of the circuit board and the lower end of the coated plate 3 fit each other. Then, by rotating the turntable 1 68, the turntable 1 68 drives the pulley 66 fixed to it to rotate, and the outer surfaces of the two pulleys 66 are connected by the transmission belt 67, so that the two pulleys 66 can rotate at the same time. When the two pulleys 66 rotate, the clamping plate 65 threadedly connected to the outer surface of the sliding groove 2 63 that rotates therewith is slidably connected to the inner surface of the sliding groove 2 63, and the two sliding grooves 2 63 are both bidirectionally threaded, so the two clamping plates 65 can approach inward at the same time, and then the circuit board is clamped.

[0046] After the circuit board is limited, the trapezoidal storage box 41 can be pressed downward. Since the blanking plate 461 is fixedly connected to the inner surface of the trapezoidal storage box 41, when the trapezoidal storage box 41 moves downward, the lower end of the blanking plate 461 can squeeze the springs 465, and the springs 465 always release the squeezing force downward, and then transmit the downward squeezing force to the surface of the special-shaped plate 468, so that the lower ends of the main scraper 469 and the two auxiliary scrapers 460 are in contact with the upper end of the coating plate 3. At the same time, the lower end of the baffle 466 does not Then, the discharge port 462 is blocked. As can be seen from the above, the special-shaped plate 468 is arranged in a diamond shape, and the lower part of the outer surface of the special-shaped plate 468 is in contact with the lower part of the inner surface of the trapezoidal storage box 41. Therefore, when the trapezoidal storage box 41 is pressed downward, the lower part of the outer surface of the special-shaped plate 468 and the lower part of the inner surface of the trapezoidal storage box 41 are separated from each other, so that the solder paste flows along the outer surface of the semicircular plate 467 to the discharge port 462, and then flows out from the left and right sides of the special-shaped plate 468, and finally flows from the opening at the lower end of the trapezoidal storage box 41 to the upper end of the coating plate 3;

[0047] At this time, the trapezoidal storage box 41 can be pushed manually. When the trapezoidal storage box 41 is pushed, the bellows 56 can move in the direction of the movement of the trapezoidal storage box 41, and when the trapezoidal storage box 41 moves, the rectangular plate 471 fixedly connected to the front and rear ends of the trapezoidal storage box 41 moves downward with the downward pressing force, and when the rectangular plate 471 moves downward, the sliding rod 472 on the same side can be squeezed into the limiting cylinder 473 on the same side, and the spring 475 on the same side is pressed. The slider 474 fixedly connected at one end is slidably connected in the slide groove 21 on the same side, so when the trapezoidal storage box 41 is pushed, the main scraper 469 and the two auxiliary scrapers 460 can be driven to apply the solder paste from the holes opened on the surface of the coating plate 3 to the surface of the circuit board, and when pushed to the far left or right, the excess solder paste can be pushed into the storage box 51 from the gap between the coating plate 3 and the C-shaped plate 1. Therefore, by pushing the trapezoidal storage box 41 back and forth left and right, the solder paste can be fully applied to the surface of the circuit board.

[0048] Embodiment 3: This embodiment is to achieve the purpose of collecting, transferring and reusing excess solder paste.

[0049] For details, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 7The stirring and transmitting assembly 5 includes two storage boxes 51 fixedly connected at the lower ends of the C-shaped plates 1, and the middle parts of the rear side walls of the inner surfaces of the two storage boxes 51 are rotatably connected to the auger 52, and the rear sides of the inner surfaces of the two storage boxes 51 are fixedly connected to the fixed plates 53. The front ends of the fixed plates 53 on the same side are rotatably connected to the rear ends of the auger 52 on the same side. An eight-shaped tube 54 is fixedly connected to the rear edges of the inner surfaces of the two storage boxes 51, and two hollow blocks 55 are fixedly connected to the middle part of the rear end of the enclosure 2. The inner surfaces of the two hollow blocks 55 are fixedly connected to the outer surfaces of the eight-shaped tube 54, and the middle part of the upper side of the outer surface of the eight-shaped tube 54 is fixedly connected to a bellows 56 communicating with its inner cavity, and the other end of the bellows 56 is fixedly connected to the inner surface of the mounting hole 2 45 through a connecting tube. The front ends of the two augers 52 are fixedly connected to drive motors, and the two drive motors are fixedly installed at the front end of the storage box 51.

[0050] When the trapezoidal storage box 41 is pushed, the main scraper 469 and the two auxiliary scrapers 460 are urged to apply solder paste to the surface of the circuit board and the excess solder paste is pushed into the storage boxes 51 on both sides. At this time, the driving motors fixedly connected to the front ends of the auger 52 on both sides can be started, so that the driving motors on the same side drive the auger 52 on the same side to rotate. When the auger 52 rotates, the solder paste pushed into the inner cavity of the storage box 51 can be stirred and transported, thereby preventing the solder paste from accumulating and clumping after being pushed into the storage box 51.

[0051] When the two augers 52 stir and transport the solder paste, the solder paste can be pushed into the eight-shaped tube 54. In the process of continuous pushing and squeezing of the solder paste, the solder paste can eventually enter the bellows 56 from the inner cavity of the eight-shaped tube 54. Since the bellows 56 is fixedly connected to the inner surface of the second mounting hole 45 through the connecting tube, the solder paste can eventually enter the trapezoidal storage box 41. In the normal coating process, under the action of the bellows 56, the bellows 56 can swing left and right with the movement of the trapezoidal storage box 41.

[0052] The bellows 56 mentioned above is a conventional setting in the prior art. In this solution, it is only necessary that the bellows 56 can bend as the trapezoidal storage box 41 moves and maintain a certain toughness. Its specific installation method and material properties can be adjusted according to actual production needs, so this solution will not elaborate on it in detail.

[0053] The driving motor mentioned above is a conventional setting in the prior art in this solution. In this solution, it only needs to drive the two augers 52. Its specific installation method, circuit connection method and control method are all conventional designs and will not be elaborated in detail in this solution.

[0054] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A solder paste printing and coating device for producing flexible circuit boards, comprising two C-shaped plates (1), characterized in that: The upper ends of the two C-shaped plates (1) are fixedly connected to a surrounding plate (2), the upper parts of the ends of the two C-shaped plates (1) close to each other are fixedly connected to a coating plate (3), the inner surface of the surrounding plate (2) is provided with a coating component (4), the lower ends of the two C-shaped plates (1) are fixedly installed with a stirring transmission component (5), and the lower parts of the ends of the two C-shaped plates (1) close to each other are fixedly installed with a limiting component (6).

2. The solder paste printing and coating device for flexible circuit board production according to claim 1, characterized in that: The coating component (4) includes a trapezoidal material storage box (41), a mounting hole (42) is provided at the rear side of the middle portion of the upper end of the trapezoidal material storage box (41), a hollow threaded barrel (43) is fixedly connected to the inner surface of the mounting hole (42), a threaded cap (44) is threadedly connected to the inner surface of the hollow threaded barrel (43), a mounting hole (45) is provided at the upper side of the middle portion of the rear end of the trapezoidal material storage box (41), a material control component (46) is fixedly installed on the inner surface of the trapezoidal material storage box (41), and a guide component (47) is fixedly installed at the lower front end and the lower rear end of the trapezoidal material storage box (41).

3. The solder paste printing and coating device for flexible circuit board production according to claim 2, characterized in that: The material control assembly (46) includes a blanking plate (461) fixedly connected to the middle of the front side wall and the middle of the rear side wall of the inner surface of the trapezoidal material storage box (41), a plurality of discharge ports (462) are linearly arranged in the middle of the upper end of the blanking plate (461), a plurality of guide holes (463) are linearly arranged on the left and right sides of the upper end of the blanking plate (461), the inner surfaces of the plurality of guide holes (463) are slidably connected to guide rods (464), the lower ends of the plurality of guide rods (464) are fixedly connected to special-shaped plates (468), and the plurality of guide holes (463) are linearly arranged on the left and right sides of the upper end of the blanking plate (461). The upper ends of the guide rods (464) are fixedly connected to a baffle (466), the middle portion of the upper end of the baffle (466) is fixedly connected to a semicircular plate (467), the left and right ends of the lower end of the blanking plate (461) are fixedly connected to a plurality of springs (465) in a linear array, the other ends of the plurality of springs (465) are respectively fixedly connected to the outer surfaces of the plurality of guide rods (464), the middle portion of the lower end of the special-shaped plate (468) is fixedly connected to a main scraper (469), and the lower front end and the lower rear end of the main scraper (469) are fixedly connected to auxiliary scrapers (460).

4. The solder paste printing and coating device for flexible circuit board production according to claim 3, characterized in that: The guide assembly (47) includes a rectangular plate (471) fixedly connected to the lower front end and the lower rear end of the trapezoidal material storage box (41), the left and right sides of the lower ends of the two rectangular plates (471) are fixedly connected to a slide bar (472), the outer surfaces of the two slide bars (472) on the same side are slidably connected to a limiting cylinder (473), the lower ends of the two limiting cylinders (473) on the same side are fixedly connected to a slider (474), and the bottom walls of the two limiting cylinders (473) on the same side and the lower ends of the two slide bars (472) on the same side are fixedly connected to a spring 2 (475).

5. The solder paste printing and coating device for flexible circuit board production according to claim 4, characterized in that: A slide groove (21) is provided in the middle of the upper front horizontal portion and the middle of the upper rear horizontal portion of the enclosure (2), and the two sliders (474) on the same side are respectively slidably connected to the inner surface of the slide groove (21) on the same side.

6. The solder paste printing and coating device for flexible circuit board production according to claim 2, characterized in that: The stirring transmission assembly (5) comprises two storage boxes (51) fixedly connected at the lower ends of the C-shaped plates (1), the middle portions of the rear side walls of the inner surfaces of the two storage boxes (51) are both rotatably connected to an auger (52), the rear sides of the inner surfaces of the two storage boxes (51) are fixedly connected to a fixed plate (53), the front ends of the fixed plates (53) on the same side are rotatably connected to the rear ends of the auger (52) on the same side, an eight-shaped tube (54) is commonly fixedly connected at the rear edges of the inner surfaces of the two storage boxes (51), and the rear of the enclosure (2) is fixedly connected to the rear of the enclosure (2). Two hollow blocks (55) are fixedly connected to the middle of the end, the inner surfaces of the two hollow blocks (55) are fixedly connected to the outer surface of the eight-shaped tube (54), the middle of the upper side of the outer surface of the eight-shaped tube (54) is fixedly connected to a bellows (56) communicating with its inner cavity, the other end of the bellows (56) is fixedly connected to the inner surface of the second mounting hole (45) through a connecting tube, the front ends of the two augers (52) are fixedly connected to a drive motor, and the two drive motors are fixedly installed on the front end of the storage box (51).

7. The solder paste printing and coating device for flexible circuit board production according to claim 1, characterized in that: The limiting assembly (6) includes a supporting plate (61) fixedly connected to the lower part of one end of the two C-shaped plates (1) close to each other, a placement groove (62) is opened in the middle of the upper end of the supporting plate (61), and the left side wall and the right side wall of the inner surface of the placement groove (62) are both provided with a second slide groove (63), and the front side wall and the rear side wall of the inner surface of the two second slide grooves (63) are both rotatably connected to a bidirectional threaded rod (64), and the front ends of the two bidirectional threaded rods (64) pass through the second slide groove (63) on the same side and extend to the outside, and the outer front sides and the outer rear sides of the two bidirectional threaded rods (64) are both threadedly connected to a clamping plate (65), and the two clamping plates (65) are slidably connected to the inner surface of the second slide groove (63), and the front ends of the two bidirectional threaded rods (64) are both fixedly connected to a pulley (66), and the outer surfaces of the two pulleys (66) are commonly wound with a transmission belt (67), and the front end of the pulley (66) on the right side is fixedly connected to a turntable (68).

8. The solder paste printing and coating device for flexible circuit board production according to claim 7, characterized in that: The middle portion of the lower end of the carrier plate (61) is rotatably connected to a bevel gear (691), the inner surface of the bevel gear (691) is threadedly connected to a threaded push rod (692), the middle portion of the lower end of the carrier plate (61) is fixedly connected to a limiting plate (693), the middle portion of the lower end of the limiting plate (693) is provided with a limiting groove (697), the lower portion of the outer surface of the threaded push rod (692) is slidably connected to the inner surface of the limiting groove (697), and the upper end of the threaded push rod (692) passes through the carrier plate (61). ) and extends to the inner cavity of the supporting plate (61), a plurality of hollow fixed platforms (694) are fixedly connected in a linear array on the rear side of the middle portion of the lower end of the supporting plate (61), the inner surfaces of the plurality of hollow fixed platforms (694) are connected to a transmission rod (695) for common rotation, the rear end of the transmission rod (695) is fixedly connected to a bevel gear 2 (698), the bevel gear 2 (698) and the bevel gear 1 (691) are meshed with each other, and the front end of the transmission rod (695) is fixedly connected to a turntable 2 (696).

9. The solder paste printing and coating device for flexible circuit board production according to claim 3, characterized in that: The special-shaped plate (468) is arranged in a diamond shape, and the lower portion of the outer surface of the special-shaped plate (468) is in contact with the lower portion of the inner surface of the trapezoidal material storage box (41).

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