Circuit board soldering paste steel mesh printing tool

Abstract

The utility model discloses a circuit board soldering paste steel mesh printing tool, and relates to the field of circuit board production. A circuit board soldering paste steel mesh printing tool comprises a machine frame and further comprises rotating shafts, a printing mechanism, a printing mechanism, a printing mechanism and a printing mechanism, and the rotating shafts are rotatably connected to the machine frame at equal intervals; the driving roller is fixedly connected to the rotating shaft; the conveying belt is connected to the plurality of driving rollers in a sleeving manner; the driving box is used for driving the rotating shaft to rotate and is fixedly mounted on one side of the rack; the mounting plate is fixedly connected to the upper part of the rack through a supporting rod; after printing of one circuit board is completed, the conveying belt can immediately convey the printed circuit board away and convey the next circuit board, so that continuous soldering paste printing operation is achieved, production efficiency is greatly improved, meanwhile, the circuit board can be accurately positioned to the position below a steel mesh, and the production efficiency is improved. And the problems of dislocation of the soldering paste and repeated operation and soldering paste waste caused by dislocation of the soldering paste are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to circuit board production technical field, concretely relates to a circuit board solder paste steel mesh printing frock. BACKGROUND

[0002] In modern electronic industry, as the support and electrical connection carrier of electronic components, the production scale of circuit board is increasingly large, with the development of electronic products to high performance and multi-functional direction, the density of components on circuit board is increasing, and the precision and efficiency of solder paste printing on circuit board are also higher and higher.

[0003] Traditional circuit board solder paste printing method often relies on manual operation or relatively simple semi-automatic equipment. When solder paste printing is carried out, the placement and conveying of circuit board mostly rely on manual operation, and the next circuit board needs to be manually replaced after printing each circuit board, which leads to discontinuous printing process, low production efficiency and cannot meet the demand of large-scale production.

[0004] At the same time, during the printing process, accurately positioning the circuit board under the steel mesh is a key step, however, the existing technology usually adopts simple mold or relies on the experience of operators to place the circuit board, which is easy to cause the deviation of the position of the circuit board under the steel mesh, and the inaccurate positioning will directly lead to the misplacement of solder paste printing, that is, the solder paste cannot be accurately applied to the specified position on the circuit board, and this misplacement problem may cause the insufficient amount of solder paste on some welding points on the circuit board, which may cause welding defects. Since the traditional method is prone to misplacement of solder paste printing, when the solder paste on the circuit board is not accurately applied, in order to ensure the welding quality, the circuit board often needs to be reprinted or manually repaired, which not only increases the additional operation process, but also causes a large amount of waste of solder paste, therefore, the utility model is proposed. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and provide a circuit board solder paste steel mesh printing frock which can overcome the above problems or at least partially solve the above problems.

[0006] The utility model discloses a basic thought of technical scheme is: a circuit board solder paste steel mesh printing frock, including frame, still include: rotation axis, equidistance rotation is connected on the frame, drive roll, fixed connection is established on the rotation axis, conveyer belt, the sleeve joint is established on a plurality of drive roll, for driving the rotation axis rotation's drive box, fixed mounting is established on the one side of frame, mounting plate, through the support, fixed connection is established on the top of frame, electric telescopic link, vertical fixed connection is established on the mounting plate, and the telescopic end of electric telescopic link is fixedly connected with the mounting frame through the connecting plate, steel mesh frame, install on the mounting frame, steel mesh sheet, fixed connection is established in the steel mesh frame, fixed strip, equidistance fixed connection is established on the conveyer belt, positioning board, symmetrical fixed connection is established on the downside of steel mesh sheet, and the interval between two positioning boards is same with the width of circuit board, and the thickness of positioning board is same with the thickness of circuit board.

[0007] In order to facilitate circuit board to be parked more accurately in the just below steel mesh sheet, further, the side of positioning board close to conveyer belt feeding end is embedded with range finder, and the range finding end surface of range finder is flush with the side of positioning board.

[0008] In order to facilitate conveyer belt to rotate more smoothly, further, the fixed strip is rubber strip.

[0009] In order to facilitate the flexible dismounting and replacement of steel mesh sheet, further, two clamping plates are symmetrically arranged in the mounting frame, two lead screws are symmetrically connected to the two sides of the mounting frame through screw threads, the two lead screws are rotatably connected to the clamping plates on the same side, two guide rods are symmetrically and slidably connected to the two sides of the mounting frame, and the end portions of the guide rods are connected to the clamping plates.

[0010] In order to facilitate the automatic adjustment of the position of steel mesh sheet, further, a concave plate is arranged on the side of the clamping plate away from the lead screw, the guide rods are slidably connected to the clamping plates, the guide rods are fixedly connected to the concave plates, a plurality of rollers are equidistantly arranged on the side of the concave plate away from the clamping plate, two first air bags are symmetrically and fixedly connected between the clamping plate and the concave plate, two second air bags are symmetrically and fixedly connected to the two sides of the concave plate, the first air bag and the second air bag on the same side are connected through an air pipe, and the first air bag and the second air bag are filled with gas.

[0011] In order to facilitate the guarantee of the horizontal state of steel mesh sheet, further, the rollers are I-shaped groove wheels.

[0012] In order to avoid the deviation of the conveyer belt, further, the two ends of the drive roll are fixedly connected with limit plates.

[0013] In order to facilitate the stability of the steel mesh, further, the side of the supporting rod close to the mounting frame is provided with a sliding groove, and the four corners of the mounting frame are slidably connected in the adjacent sliding grooves.

[0014] After the above technical scheme, the utility model discloses the following beneficial effects compared with prior art: the utility model discloses the cooperation of the conveying belt, fixed strip, positioning plate and other components, after the printing of a circuit board, the conveying belt can immediately convey the printed circuit board away, and the next circuit board is conveyed, thereby realizing continuous printing solder paste operation, greatly improving production efficiency, and the circuit board can be accurately positioned below the steel mesh, effectively avoiding solder paste misplacement and the resulting repeated operation and solder paste waste problems.

[0015] The specific embodiments of the utility model will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] In the drawings:

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the schematic diagram of part structure of the utility model Figure One ;

[0019] Figure 3 It is the schematic diagram of part structure of the utility model Figure Two ;

[0020] Figure 4 It is the schematic diagram of part structure of the utility model Figure Three ;

[0021] Figure 5 It is the schematic diagram of part structure of the utility model Figure Four ;

[0022] Figure 6 It is the schematic diagram of part structure of the utility model Figure Five .

[0023] In the drawings: 1, rack;101, rotating shaft;102, drive roller;103, drive box;104, conveying belt;105, fixed strip;106, limit plate;2, supporting rod;201, mounting plate;202, electric telescopic rod;203, connecting plate;204, mounting frame;205, steel mesh frame;206, steel mesh;207, positioning plate;208, range finder;3, clamping plate;301, screw;302, guide rod;303, concave plate;304, roller;305, first air bag;306, second air bag. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0025] Embodiment 1

[0026] With reference to Figures 1-6 A circuit board solder paste steel mesh printing tool includes a rack 1, further comprising: a rotating shaft 101, equidistantly rotatingly connected on the rack 1; a driving roller 102, fixedly connected on the rotating shaft 101; a conveying belt 104, sleeved on the plurality of driving rollers 102; a driving box 103 for driving the rotating shaft 101 to rotate, fixedly installed on one side of the rack 1; a mounting plate 201, fixedly connected on the top of the rack 1 through a supporting rod 2; an electric telescopic rod 202, vertically fixedly connected on the mounting plate 201, and a mounting frame 204 is fixedly connected on the telescopic end of the electric telescopic rod 202 through a connecting plate 203; a steel mesh frame 205, mounted on the mounting frame 204; a steel mesh sheet 206, fixedly connected in the steel mesh frame 205; a fixed strip 105, equidistantly fixedly connected on the conveying belt 104; a positioning plate 207, symmetrically fixedly connected on the lower side of the steel mesh sheet 206, the spacing between the two positioning plates 207 is the same as the width of the circuit board, and the thickness of the positioning plate 207 is the same as the thickness of the circuit board.

[0027] Wherein, in actual use, the staff can install the scraper and the matched parts used for scraping the solder paste accumulated on the steel mesh sheet 206 on the connecting plate 203, so as to scrape the solder paste back and forth.

[0028] When the solder paste needs to be printed on the circuit board, at this time the worker first places a certain amount of solder paste on the steel mesh 206, then the rotating shaft 101 is controlled to rotate by the drive box 103, the rotating shaft 101 drives the conveyor belt 104 to rotate through the drive roller 102, then the worker can place the circuit board on the conveyor belt 104 through the mechanical arm, and the circuit board is placed on the conveyor belt 104 close to the fixed bar 105, and the circuit board is located in the middle position of the conveyor belt 104, then the conveyor belt 104 moves the circuit board to one side of the steel mesh 206, when the circuit board is about to reach the steel mesh 206, the electric telescopic rod 202 is started, the electric telescopic rod 202 drives the mounting frame 204 to move down through the connecting plate 203, the mounting frame 204 drives the steel mesh frame 205 and the steel mesh 206 to move down, until the positioning plate 207 below the steel mesh 206 is attached to the conveyor belt 104, in order to reduce the friction between the positioning plate 207 and the conveyor belt 104, the surface of the conveyor belt 104 and the positioning plate 207 can be treated to be smooth, so that the friction between the positioning plate 207 and the conveyor belt 104 is reduced, and the wear of the two is reduced, when the fixed bar 105 and the two positioning plates 207 are in contact, the movement of the circuit board is stopped, then the circuit board is located directly below the steel mesh 206 under the cooperation of the positioning plate 207 and the fixed bar 105, at this time the position of the circuit board to be printed with solder paste is just corresponding to the solder paste hole on the steel mesh 206, then the scraper is controlled to move on the steel mesh 206, the solder paste can be applied to the specified position of the circuit board to be printed with solder paste, after printing, the steel mesh 206 is controlled to move up, so that the positioning plate 207 is located above the fixed bar 105, then the conveyor belt 104 is started again, the printed circuit board can be conveyed away, and the next circuit board can be conveyed to perform the printing operation again, and thus the circuit board can be continuously printed with solder paste.

[0029] The printing tool is equipped with a conveying system composed of the rotating shaft 101, the drive roller 102 and the conveyor belt 104, and the rotating shaft 101 is driven to rotate by the drive box 103, in actual operation, the worker places the circuit board on the conveyor belt 104 through the mechanical arm, the conveyor belt 104 can continuously convey the circuit board to the position below the steel mesh 206 for solder paste printing operation, after the printing of one circuit board is completed, the conveyor belt 104 can immediately convey the printed circuit board away, and the next circuit board can be conveyed to realize continuous printing operation of the solder paste, and the production efficiency is greatly improved.

[0030] The lower side of the steel mesh 206 is symmetrically fixed with positioning plates 207, the spacing between the two positioning plates 207 is the same as the width of the circuit board, and the thickness of the positioning plate 207 is the same as the thickness of the circuit board. At the same time, the fixed strips 105 are fixed equidistantly on the conveying belt 104. During printing, when the circuit board is conveyed to the lower side of the steel mesh 206 by the conveying belt 104, the fixed strips 105 cooperate with the positioning plates 207 to accurately position the circuit board directly below the steel mesh 206, ensuring that the position of the solder paste to be printed on the circuit board corresponds to the solder paste outlet hole on the steel mesh 206 one by one. This precise positioning mechanism effectively avoids the problem of mispositioning of the printed solder paste. In the traditional printing process, inaccurate positioning of the circuit board can easily cause the solder paste to be applied to the wrong position, so that the surface of the circuit board needs to be repeatedly operated due to the mispositioning of the solder paste. However, the cooperation of the positioning plate 207 and the fixed strip 105 ensures that the solder paste can be accurately applied to the specified position of the circuit board during each printing, reducing the repeated operation caused by mispositioning of the solder paste. Due to the precise positioning, the situation of applying the solder paste to the wrong position is avoided, thereby reducing the waste of solder paste. In the process of manufacturing circuit boards, solder paste is a relatively expensive material. Reducing solder paste waste not only reduces production costs, but also improves resource utilization during production.

[0031] Embodiment 2

[0032] With reference to Figures 1-6 A circuit board solder paste steel mesh printing tool, which is basically the same as embodiment 1, and further has: the positioning plate 207 is inlaidly installed with a distance meter 208 on the side close to the feeding end of the conveying belt 104. The distance measuring end surface of the distance meter 208 is flush with the side surface of the positioning plate 207. Through the setting of the distance meter 208, when the distance meter 208 detects that the fixed strip 105 is in close contact with the positioning plate 207, the main control unit will control the drive box 103 to be closed according to the data transmitted by the distance meter 208, so as to stop the rotation of the conveying belt 104, so that the circuit board can be more accurately parked directly below the steel mesh 206, ensuring the quality of printing the solder paste on the circuit board.

[0033] The fixed strip 105 is a rubber strip. By making the fixed strip 105 of rubber material, when the fixed strip 105 is rotated to the outermost two sides of the driving roller 102, the fixed strip 105 can deform better, so that the conveying belt 104 can rotate more smoothly.

[0034] Embodiment 3

[0035] With reference to Figures 1-6The circuit board solder paste steel mesh printing tool is basically same as that of the embodiment 2, and is further provided with two clamping plates 3 symmetrically arranged in the installation frame 204, two lead screws 301 symmetrically connected to the two sides of the installation frame 204 through threads, two guide rods 302 symmetrically and slidingly connected to the installation frame 204 on the two sides of the lead screws 301, and the end of the guide rod 302 is connected with the clamping plate 3. When the steel mesh frame 205 needs to be fixedly installed on the installation frame 204, the staff first places the steel mesh frame 205 with the steel mesh sheet 206 inside the installation frame 204, then rotates the lead screws 301, and the lead screws 301 drive the clamping plate 3 to move under the cooperation of the guide rods 302. When the clamping plate 3 is attached to the steel mesh frame 205, the final position adjustment of the steel mesh frame 205 is performed. After the position of the steel mesh frame 205 is determined, the staff continues to rotate the lead screw 301, so that the clamping plate 3 is tightly attached to the steel mesh frame 205, thereby completing the installation and fixation of the steel mesh frame 205. Through the arrangement of the clamping plate 3, the lead screw 301 and the guide rod 302, the staff can flexibly disassemble and assemble the steel mesh frame 205, and the device is suitable for steel mesh frames 205 of different sizes.

[0036] The side of the clamping plate 3 away from the lead screw 301 is provided with a concave plate 303, the guide rod 302 is slidingly connected to the clamping plate 3, the guide rod 302 is fixedly connected with the concave plate 303, a plurality of rollers 304 are equidistantly installed on the side of the concave plate 303 away from the clamping plate 3, two first air bags 305 are symmetrically and fixedly connected between the clamping plate 3 and the concave plate 303, two second air bags 306 are symmetrically and fixedly connected on the two sides of the concave plate 303, the first air bag 305 and the second air bag 306 on the same side are connected through an air pipe, and the first air bag 305 and the second air bag 306 are filled with gas. When the steel mesh frame 205 needs to be fixedly installed in the installation frame 204, the staff rotates the lead screw 301, the lead screw 301 drives the concave plate 303 to move through the clamping plate 3, and when the rollers 304 on the concave plate 303 abut against the side wall of the steel mesh frame 205, the staff continues to rotate the lead screw 301, the clamping plate 3 continues to move, the first air bag 305 is then extruded, the gas in the first air bag 305 enters the second air bag 306 through the air pipe, and the second air bag 306 is inflated to adjust the position of the steel mesh frame 205. Thus, the position of the steel mesh frame 205 can be automatically adjusted while the steel mesh frame 205 is clamped and fixed, and the staff does not need to manually adjust the position of the steel mesh frame 205, thereby effectively improving the practicability of the device.

[0037] The roller 304 is an I-shaped groove wheel, by designing the roller 304 as an I-shaped groove wheel, when the roller 304 abuts against the steel mesh frame 205, the steel mesh frame 205 can be horizontally limited, thereby ensuring the parallelism between the steel mesh sheet 206 and the circuit board.

[0038] Embodiment 4:

[0039] With reference to Figures 1-6 The circuit board solder paste steel mesh printing tool is basically same as that in Embodiment 3, and further, the two ends of the driving roller 102 are fixedly connected with the limiting plates 106, by arranging the limiting plates 106, when the conveying belt 104 is sleeved on the driving roller 102, the conveying belt 104 can be limited, thereby avoiding the problem of deviation of the conveying belt 104, and affecting the conveying stability of the circuit board and the service life of the conveying belt 104.

[0040] The four corners of the mounting frame 204 are slidably connected in the adjacent sliding grooves, as shown in Figure 6 By slidingly connecting the mounting frame 204 on the four supporting rods 2, the stability of the steel mesh sheet 206 can be effectively improved, and the horizontal effect after lifting can be ensured.

[0041] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiments, it is not intended to limit the present application.

Claims

1. A circuit board solder paste screen printing tooling, characterized by, The utility model relates to a kind of steel mesh automatic feeding device, including rack (1), further including: Rotary shaft (101), equidistant rotary connection is established in the rack (1); Driving roller (102), fixedly connected in the rotary shaft (101); Conveying belt (104), sleeve joint is established in multiple driving roller (102); Drive box (103) for driving the rotary shaft (101) rotation, fixedly installed in the rack (1) one side; Mounting plate (201), fixedly connected in the rack (1) upper side by support rod (2); Electric telescopic rod (202), vertically fixedly connected in the mounting plate (201), and the telescopic end of the electric telescopic rod (202) is fixedly connected with mounting frame (204) by connecting plate (203); Steel mesh frame (205), is installed in the mounting frame (204); Steel mesh sheet (206), fixedly connected in the steel mesh frame (205); Fixed strip (105), equidistant fixedly connected in the conveying belt (104); Positioning plate (207), symmetrically fixedly connected in the lower side of the steel mesh sheet (206), the interval between two positioning plates (207) is same with the width of circuit board, and the thickness of the positioning plate (207) is same with the thickness of circuit board.

2. The circuit board paste screen printing tooling of claim 1, wherein, The ranging instrument (208) is inlaidly installed in the side of the feeding end of conveying belt (104) of the positioning plate (207), and the ranging end surface of the ranging instrument (208) is flush with the side of positioning plate (207).

3. The circuit board paste screen printing tooling of claim 1, wherein: The fixed strip (105) is rubber strip.

4. The circuit board paste screen printing tooling of claim 1, wherein: The mounting frame (204) is symmetrically provided with two clamping plates (3) inside, and the two sides of the mounting frame (204) are symmetrically connected with two lead screws (301) by threads, the two lead screws (301) are rotatably connected with the clamping plates (3) on the same side respectively, and the mounting frame (204) is symmetrically and slidably connected with two guide rods (302) on the two sides of the lead screws (301), and the end of the guide rod (302) is connected with the clamping plate (3).

5. The circuit board paste screen printing tooling of claim 4, wherein, The side, away from the lead screw (301), of the clamping plate (3) is provided with a concave plate (303), the guide rod (302) is slidably connected on the clamping plate (3), the guide rod (302) is fixedly connected with the concave plate (303), a plurality of rollers (304) are equidistantly installed on the side, away from the clamping plate (3), of the concave plate (303), two first air bags (305) are symmetrically and fixedly connected between the clamping plate (3) and the concave plate (303), two second air bags (306) are symmetrically and fixedly connected on the two sides of the concave plate (303), the first air bag (305) and the second air bag (306) on the same side are connected by air pipes, and the first air bag (305) and the second air bag (306) are filled with gas.

6. The circuit board paste screen printing tooling of claim 5, wherein, The roller (304) is an I-shaped groove wheel.

7. The circuit board paste screen printing tooling of claim 1, wherein: The two ends of the driving roller (102) are fixedly connected with limit plates (106).

8. The circuit board paste screen printing tooling of claim 1, wherein: The side, close to the mounting frame (204), of the support rod (2) is provided with a sliding groove, and the four corners of the mounting frame (204) are slidably connected in the adjacent sliding grooves.

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