SMT (Surface Mount Technology) chip mounting jig

Abstract

The utility model discloses an SMT (Surface Mount Technology) chip mounting jig in the technical field of chip mounting jig surface mounting, which comprises a working table, an adsorption mechanism arranged in the middle of the working table, a dust removal mechanism arranged above the working table, a positioning seat fixedly arranged in the middle of the working table, a rubber pad fixedly arranged on the positioning seat, an air pipe body fixedly connected with the lower end of the rubber pad, and a dust removal mechanism arranged above the air pipe body. The SMT chip mounting jig is additionally provided with an adsorption mechanism and a dust removal mechanism, the adsorption mechanism adopts an air pump negative pressure adsorption mode and is provided with a plurality of adsorption air pipes, a circuit board is placed on a rubber pad, an air pump body is started to extract air, then the negative pressure fixing effect is achieved, and it can be guaranteed that the circuit board is stably installed on the rubber pad; and the negative pressure adsorption mode is different from the clamping mode, it can be guaranteed that the circuit board is not damaged, the safety of the circuit board is ensured, the dust removal mechanism is combined with the brushing and dust suction structure, dust can be quickly scattered and sucked away, dust diffusion is prevented, and cleanliness of the jig is kept.

Description

Technical Field

[0001] This utility model relates to the field of surface mount technology for surface mount fixtures, specifically an SMT surface mount fixture. Background Technology

[0002] SMT (Surface Mount Technology) fixtures are auxiliary tools or equipment used in the surface mount technology (SMT) production process to fix and support printed circuit boards (PCBs) and assist pick-and-place machines in placing electronic components. The main purpose of the fixture is to ensure that electronic components can be accurately and efficiently placed into their predetermined positions on the PCB. The fixture has a precise positioning function, which can ensure that the PCB is accurately positioned on the pick-and-place machine, so that components can be accurately placed into their predetermined positions. The fixture can firmly fix the PCB, preventing positioning deviations caused by vibration or movement during production, while providing support to ensure the stability of the PCB during the placement process.

[0003] Patent application CN201920441575.5 discloses an SMT placement fixture, comprising an SMT component and fixture, including a fixed plate with side plates snapped onto both sides of the fixed plate. A center screw cylinder is movably connected to the interior of one of the side plates via a bearing. A worm gear is threaded into the interior of the center screw cylinder, and a rotatable center insert is inserted into the end of the worm gear away from the center screw cylinder. The end of the center insert is snapped onto the side wall of the other side plate. Under the action of the worm gear, the positioning pins of this SMT component and fixture can simultaneously move closer to or further away, achieving the purpose of controlling the lateral movement of the positioning pins. The operation is simple and convenient. The center screw cylinder installed outside the worm gear allows the positioning pins on both sides to move synchronously left and right, broadening its applicability. By controlling the screw, the positioning pin can be moved closer to or away from the worm gear. This positioning pin can be controlled to move freely on the fixed plate, which is highly flexible and more practical. Based on the above patent search and combined with the existing SMT placement fixtures, it was found that traditional SMT placement fixtures usually use robotic arms or clamps to fix PCBs. These mechanical structures have limitations when adapting to PCBs of different sizes and shapes, and it is difficult to achieve high-precision positioning requirements. Inaccurate positioning will increase the adjustment time in the placement process and reduce production efficiency. In addition, during the production process, dust, solder paste residue and other particles are easy to accumulate on the surface of PCBs and fixtures. These particles may affect the placement quality. The fixture structure is complex and it is difficult to reach all corners during manual cleaning, resulting in incomplete cleaning. Utility Model Content

[0004] The purpose of this invention is to provide an SMT mounting fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an SMT placement fixture, including a workbench, an adsorption mechanism in the middle of the workbench, and a dust removal mechanism above the workbench. The adsorption mechanism includes a positioning seat, which is fixedly installed in the middle of the workbench. A rubber pad is fixedly installed on the positioning seat, and an air pipe is fixedly connected to the lower end of the rubber pad. The dust removal mechanism includes a mounting cover, a fixing frame, a first drive motor, a first drive turntable, and a first cleaning brush. The mounting cover is provided above the positioning seat, and a fixing frame is fixedly installed on the inner wall of the mounting cover. The first drive motor is fixedly installed on the left end of the fixing frame, and the first drive turntable is fixedly installed on the transmission end of the first drive motor. The first cleaning brush is installed on the lower end of the first drive turntable.

[0006] Optionally, the adsorption mechanism further includes an air collection pipe, a support rod, an air pump body, and an air receiving pipe, with the air collection pipe fixedly installed at the lower end of the air pipe body.

[0007] Optionally, a support rod is fixedly installed at the lower end of the gas collection pipe, and an air receiving pipe is fixedly connected to the right end of the gas collection pipe. An air pump body is fixedly connected to the end of the air receiving pipe away from the gas collection pipe.

[0008] Optionally, the dust removal mechanism further includes a second drive motor, a second drive turntable, a second cleaning brush, a docking air groove, a dust collection bin, a filter screen, an air pump, a mounting base, a limiting slide rod, and a limiting slide groove. The right end of the fixed frame is fixedly installed with the second drive motor, and a limiting slide groove is provided on the worktable.

[0009] Optionally, a second drive turntable is fixedly mounted on the transmission end of the second drive motor, and a second cleaning brush is mounted on the lower end of the second drive turntable.

[0010] Optionally, the upper end of the mounting cover is provided with a docking air groove, and a dust collection bin is fixedly installed on the upper end of the mounting cover.

[0011] Optionally, a filter screen is installed inside the dust collection bin, and an air pump is fixedly installed on the dust collection bin.

[0012] Optionally, mounting bases are fixedly installed at both ends of the mounting cover, and a limiting slide rod is fixedly installed at the lower end of the mounting base, the limiting slide rod being connected to the limiting slide groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model includes an adsorption mechanism that uses a negative pressure adsorption method with an air pump. This mechanism can automatically adapt to PCBs of different sizes and shapes, overcoming the limitations of traditional robotic arms or clamps on the size and shape of PCBs. It improves the applicability and flexibility of the fixture. The adsorption mechanism draws gas through the air pump to form a stable negative pressure environment, ensuring that the PCB will not move due to external factors during the placement process. This improves the stability and safety of the operation. Compared with traditional clamping methods, the negative pressure fixing effect can better avoid mechanical damage to the PCB and protect the safety and integrity of the circuit board.

[0015] 2. This utility model includes a dust removal mechanism that combines a rotating brush and an air pump to achieve a highly efficient cleaning effect. It can quickly remove dust, residues, and other particles from the surface of the PCB and fixture. The rotating motion of the cleaning brush, combined with the suction function of the air pump, effectively prevents the spread of dust and ensures a clean working environment. Regularly using the dust removal mechanism to clean the fixture can ensure the cleanliness of the fixture surface and prevent dust and other particles from negatively affecting the surface mount quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view.

[0018] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0019] Figure 4 This is a top view of the structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional rear view structure of this utility model;

[0021] Figure 6 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0022] Figure 7 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 .

[0023] In the diagram: 1. Workbench; 2. Adsorption mechanism; 201. Positioning seat; 202. Rubber pad; 203. Air pipe body; 204. Air collection pipe; 205. Support rod; 206. Air pump body; 207. Air inlet pipe; 3. Dust removal mechanism; 301. Mounting cover; 302. Fixing frame; 303. First drive motor; 304. First drive turntable; 305. First cleaning brush; 306. Second drive motor; 307. Second drive turntable; 308. Second cleaning brush; 309. Connecting air groove; 310. Dust collection bin; 311. Filter screen; 312. Air pump; 313. Mounting seat; 314. Limiting slide bar; 315. Limiting slide groove. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-7In this embodiment of the present invention, an SMT mounting fixture includes a workbench 1. An adsorption mechanism 2 is disposed in the middle of the workbench 1, and a dust removal mechanism 3 is disposed above the workbench 1. The adsorption mechanism 2 includes a positioning seat 201, which is fixedly installed in the middle of the workbench 1. A rubber pad 202 is fixedly installed on the positioning seat 201, and an air pipe 203 is fixedly connected to the lower end of the rubber pad 202. The adsorption mechanism 2 also includes an air collection pipe 204, a support rod 205, an air pump body 206, and an air inlet pipe 207. The air collection pipe 204 is fixedly installed at the lower end of the air pipe body 203, and the support rod 205 is fixedly installed at the lower end of the air collection pipe 204. The right end of the air pipe 204 is fixedly connected to the air inlet pipe 207, and the end of the air inlet pipe 207 away from the air inlet pipe 204 is fixedly connected to the air pump body 206; the rubber pad 202 has appropriate elasticity and adsorption force, which can evenly disperse the negative pressure and ensure that the contact area between the PCB and the workbench 1 is maximized, thereby improving the stability and uniformity of adsorption. The air pipe body 203, the air inlet pipe 204 and the support rod 205 constitute the air path system, which ensures unobstructed airflow and maintains the structural stability of the fixture, providing a solid adsorption foundation for the PCB. The air pump body 206 and the air inlet pipe 207 are responsible for generating negative pressure, ensuring a fast and stable adsorption effect.

[0028] The dust removal mechanism 3 includes a mounting cover 301, a fixing frame 302, a first drive motor 303, a first drive turntable 304, and a first cleaning brush 305. The mounting cover 301 is positioned above the positioning seat 201. The fixing frame 302 is fixedly mounted on the inner wall of the mounting cover 301. The first drive motor 303 is fixedly mounted on the left end of the fixing frame 302. The first drive turntable 304 is fixedly mounted on the transmission end of the first drive motor 303. The first cleaning brush 305 is mounted on the lower end of the first drive turntable 304. The dust removal mechanism 3 also includes a second drive motor 306. The system includes a second drive turntable 307, a second cleaning brush 308, a docking air groove 309, a dust collection bin 310, a filter screen 311, an air pump 312, a mounting base 313, a limiting slide rod 314, and a limiting slide groove 315. A second drive motor 306 is fixedly mounted on the right end of the fixing frame 302. A limiting slide groove 315 is provided on the worktable 1. The second drive turntable 307 is fixedly mounted on the transmission end of the second drive motor 306. The second cleaning brush 308 is mounted on the lower end of the second drive turntable 307. A docking air groove 309 is provided on the upper end of the mounting cover 301. A dust collection bin 310 is fixedly installed at the upper end of the cover 301. A filter screen 311 is installed inside the dust collection bin 310. An air pump 312 is fixedly installed on the dust collection bin 310. Mounting seats 313 are fixedly installed at both the left and right ends of the cover 301. A limiting slide rod 314 is fixedly installed at the lower end of the mounting seat 313, and the limiting slide rod 314 interacts with a limiting slide groove 315. The cover 301 and the fixing frame 302 provide necessary structural support for the dust removal mechanism 3, ensuring the stability and coordination of each component during the cleaning process. The first drive motor 303 and the second drive motor 3... 06 drives the first cleaning brush 305 and the second cleaning brush 308 respectively. They can provide sufficient rotational power to ensure that the cleaning brushes can effectively remove dust and other particles. The first cleaning brush 305 and the second cleaning brush 308 can effectively remove various types of dust and residues, making the cleaning process more efficient. The connecting air groove 309 and the air pump 312 quickly suck away the dust generated during the cleaning process. The mounting base 313, the limiting slide bar 314 and the limiting slide groove 315 ensure the accurate movement trajectory of the dust removal mechanism 3, improving the cleaning accuracy and stability.

[0029] The working principle of this utility model is as follows: This SMT placement fixture is equipped with an adsorption mechanism 2 and a dust removal mechanism 3. Before using this SMT placement fixture, the air pump body 206, the first drive motor 303, the second drive motor 306, and the vacuum pump 312 need to be connected to the power supply and the control terminal. When using this SMT placement fixture, when activating the fixture, the circuit board is placed on the rubber pad 202, and the air pump body 206 is activated to extract the gas in the gas collection pipe 204, thereby causing the gas in the rubber pad 202 and the air pipe body 203 to be drawn away, achieving a negative pressure effect. At this time, the circuit board will be stably adsorbed on the rubber pad 202, and processing operations can be performed. In the later use, the dust removal mechanism 3 can be activated to clean the fixture workbench 1. The first drive motor 303, the second drive motor 306, and the vacuum pump 312 are activated simultaneously. The first drive motor 303 drives the first drive turntable 304 and the first drive turntable 306. The cleaning brush 305 rotates, and the second drive motor 306 drives the second drive turntable 307 and the second cleaning brush 308 to rotate, thereby achieving the effect of brushing and cleaning. At this time, the air pump 312 draws away the gas in the mounting cover 301, so that the dust raised during cleaning is adsorbed into the dust collection bin 310 and blocked by the filter screen 311. In summary, the adsorption mechanism 2 adopts the air pump negative pressure adsorption method, and sets up multiple adsorption air pipes. The circuit board is placed on the rubber pad 202, and the air pump body 206 is started to draw gas, thereby achieving the effect of negative pressure fixation. This ensures that the circuit board is stably installed on the rubber pad 202. Moreover, the negative pressure adsorption method is different from the clamping method, which can ensure that the circuit board is not damaged and ensure the safety of the circuit board. The dust removal mechanism 3 combines the brushing and dust suction structure, which can quickly disperse and remove dust, prevent dust from spreading, and keep the fixture clean.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An SMT paster jig comprising a worktable (1), characterized in that: The middle part of the workbench (1) is provided with an adsorption mechanism (2), and the upper part of the workbench (1) is provided with a dust removal mechanism (3), the adsorption mechanism (2) comprises a positioning seat (201), the positioning seat (201) is fixedly installed in the middle part of the workbench (1), a rubber pad (202) is fixedly installed on the positioning seat (201), the lower end of the rubber pad (202) is fixedly connected with a gas pipe body (203), the dust removal mechanism (3) comprises a mounting cover (301), a fixing frame (302), a first drive motor (303), a first drive turntable (304) and a first cleaning brush (305), the upper part of the positioning seat (201) is provided with the mounting cover (301), the inner wall of the mounting cover (301) is fixedly installed with the fixing frame (302), the left end of the fixing frame (302) is fixedly installed with the first drive motor (303), the transmission end of the first drive motor (303) is fixedly installed with the first drive turntable (304), and the lower end of the first drive turntable (304) is installed with the first cleaning brush (305).

2. The SMT patch jig of claim 1, wherein: The adsorption mechanism (2) further comprises a gas collecting pipe (204), a supporting rod (205), a gas pump body (206) and a gas connecting pipeline (207), and the lower end of the gas pipe body (203) is fixedly installed with the gas collecting pipe (204).

3. The SMT pick-and-place tool of claim 2, wherein: The lower end of the gas collecting pipe (204) is fixedly installed with the supporting rod (205), the right end of the gas collecting pipe (204) is fixedly connected with the gas connecting pipeline (207), and the end, away from the gas collecting pipe (204), of the gas connecting pipeline (207) is fixedly connected with the gas pump body (206).

4. The SMT pick-and-place fixture of claim 1, wherein: The dust removal mechanism (3) further comprises a second drive motor (306), a second drive turntable (307), a second cleaning brush (308), a butt joint air groove (309), a dust collecting bin (310), a filter screen (311), a gas suction pump (312), a mounting seat (313), a limiting sliding rod (314) and a limiting sliding groove (315), and the right end of the fixing frame (302) is fixedly installed with the second drive motor (306).

5. The SMT pick-and-place tool of claim 4, wherein: The transmission end of the second drive motor (306) is fixedly installed with the second drive turntable (307), and the lower end of the second drive turntable (307) is installed with the second cleaning brush (308).

6. The SMT pick-and-place fixture of claim 1, wherein: The upper end of the mounting cover (301) is provided with the butt joint air groove (309), and the upper end of the mounting cover (301) is fixedly installed with the dust collecting bin (310).

7. The SMT pick-and-place tool of claim 6, wherein: The inside of the dust collecting bin (310) is installed with the filter screen (311), and the dust collecting bin (310) is fixedly installed with the gas suction pump (312).

8. The SMT pick-and-place fixture of claim 1, wherein: The left and right ends of the mounting cover (301) are fixedly installed with the mounting seat (313), the lower end of the mounting seat (313) is fixedly installed with the limiting sliding rod (314), and the limiting sliding rod (314) is matched with the limiting sliding groove (315).

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