SMT (Surface Mount Technology) device with high adaptation degree and SMT method thereof

Abstract

The invention discloses an SMT device with high adaptability and a mounting method thereof, the SMT device comprises a mounting table, an adjusting mechanism is mounted on the mounting table, the adjusting mechanism comprises a bidirectional threaded rod, a movable frame, a fixed rod and a limiting plate, the bidirectional threaded rod is connected to the mounting table through a bearing, the bidirectional threaded rod is connected with the movable frame through threads, and the limiting plate is connected with the movable frame through a bearing. The movable frame is in sliding connection with the fixed rod, and the fixed rod is fixed on the mounting table. According to the SMT device with the high adaptation degree and the SMT method thereof, the distance between the front movable frame and the rear movable frame can be adjusted under the action of a bidirectional threaded rod, so that the distance between the front conveying belt and the rear conveying belt can be adjusted, PCBs with different widths can be conveyed and machined, and the mounting efficiency is improved by matching with the sliding action between a connecting shaft and a clamping strip and a mounting shaft. Normal operation of adjustment can be guaranteed, the normal transmission effect can be achieved through the clamping effect between the clamping strips and the mounting shafts, and it is guaranteed that the double-shaft motor can drive the rolling wheels and the conveying belt to operate normally.

Description

Technical Field

[0001] The present invention relates to the technical field of SMT patch devices, in particular to an SMT patch device with high adaptability and a patch method thereof. Background Art

[0002] SMT patch refers to the abbreviation of a series of process flows based on PCB. PCB is printed circuit board, SMT is surface assembly technology (surface mount technology), which is the most popular technology and process in the electronic assembly industry. The surface assembly technology of electronic circuits is called surface mounting or surface mounting technology. It is a circuit assembly technology that mounts pinless or short-lead surface assembly components (referred to as SMC / SMD, Chinese called sheet components) on the surface of printed circuit boards or other substrates, and assembles them by welding through reflow soldering or dip soldering. Under normal circumstances, the electronic products we use are designed by PCB plus various capacitors, resistors and other electronic components according to the designed circuit diagram, so all kinds of electrical appliances require various SMT patch processing technologies to process; In actual use of the existing SMT patch device, in order to ensure the stability of the movement of the PCB board, it is necessary to design a conveying device with a specific width according to the width of the PCB board to realize the conveying of the PCB board. A set of conveying devices cannot meet the conveying requirements of PCB boards of different widths and has low adaptability. Therefore, in view of the above problems, an SMT patch device with high adaptability is designed to better meet the actual use needs. Summary of the invention

[0003] The object of the present invention is to provide an SMT patch device with high adaptability and a patch method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an SMT patch device with high adaptability and a patch method thereof, comprising a mounting platform, an adjusting mechanism being mounted on the mounting platform, the adjusting mechanism comprising a bidirectional threaded rod, a movable frame, a fixed rod and a limit plate, the bidirectional threaded rod bearing is connected to the mounting platform, the bidirectional threaded rod is mutually connected to the movable frame through a thread, the movable frame and the fixed rod are slidably connected, the fixed rod is fixed to the mounting platform, the movable frame is also fixed with a limit plate, a feeding mechanism is mounted on the adjusting mechanism, the feeding mechanism comprises a dual-axis motor, a mounting shaft, a roller, a conveyor belt, a connecting shaft and a clamping strip, the dual-axis motor is fixed to the mounting platform, the output end of the dual-axis motor is fixed with a mounting shaft, the roller bearing is connected to the movable frame, the roller is also connected with a conveyor belt, a connecting shaft is fixed on the roller, and the connecting shaft and the mounting shaft are slidably connected, a clamping strip is also fixed at an equal angle on the connecting shaft, and the clamping strip and the mounting shaft are clamped.

[0005] Preferably, a fixing frame is fixed on the upper end of the mounting platform, and a patch assembly is installed on the fixing frame, and a clamping mechanism is also installed on the fixing frame, and the clamping mechanism and the lifting mechanism are connected to each other. Through the above structure, the normal patching can be ensured.

[0006] Preferably, the patch assembly includes a longitudinal linear motor, a transverse linear motor, a first cylinder and a patch machine. The longitudinal linear motor is fixed on a fixed frame, and a transverse linear motor is installed on the longitudinal linear motor, and the first cylinder is installed on the transverse linear motor. At the same time, the patch machine is fixed on the output end of the first cylinder. Through the above structure, multi-directional adjustment of the patch machine can be achieved, thereby ensuring the normal progress of the patch.

[0007] Preferably, the clamping mechanism includes a second cylinder, a fixed plate, a first spring, a top plate, a guide rod, a clamping plate and a connecting rod. The second cylinder is fixed on a fixed frame, and a fixed plate is fixed to the output end of the second cylinder, and one end of the first spring is fixed to the fixed plate, while the other end of the first spring is fixed to the top plate. A limit rod is also fixed on the top plate, and the limit rod and the fixed plate are slidably connected. Through the action of the first spring, a basic force can be provided for the automatic reset of the top plate.

[0008] Preferably, guide rods are fixed symmetrically on the top plate, and the guide rods are slidably connected to the clamping plate, and the height of the clamping plate is equal to that of the top plate. Through the action of the clamping plate and the top plate, a multi-directional clamping and limiting effect of the PCB board can be achieved.

[0009] Preferably, the splint is also rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the fixed plate, and the connecting rod is symmetrically distributed about the center line of the fixed plate. When the top plate moves relative to the fixed plate, the transmission action of the connecting rod can provide a basic force for the movement of the splint.

[0010] Preferably, the lifting mechanism includes a mounting frame, a support plate, a sliding rod, a second spring, an inclined panel and a vertical rod. The mounting frame is fixed on the mounting platform, and a support plate is arranged above the mounting frame, and the upper end surface of the support plate is lower than the upper end surface of the conveyor belt. Through the action of the support plate, the lifting effect of the PCB board can be achieved, thereby facilitating the clamping and limiting of the PCB board and ensuring the normal operation of the device.

[0011] Preferably, a sliding rod is fixed symmetrically on the lower end surface of the support plate, and the sliding rod is slidably connected to the mounting frame, and a second spring is also fixed between the sliding rod and the mounting frame. When the support plate moves, the sliding guiding action between the sliding rod and the mounting frame can ensure the stability of the movement of the support plate, and the elastic action of the second spring can provide a basic force for the automatic reset of the support plate.

[0012] Preferably, the slide rod and the inclined panel are slidably connected, and the inclined panel and the mounting platform are slidably connected, and one end of the vertical rod is fixed on the inclined panel, and the other end of the vertical rod is fixed on the fixed plate. Through the sliding action between the slide rod and the inclined panel, a basic force can be provided for the movement of the slide rod and the support plate, thereby ensuring the normal operation of the device.

[0013] A patch method for an SMT patch device with high adaptability, the operation steps are as follows: S1: Adjust the position of the conveyor belt according to the width of the PCB board to be patched, and move the movable frame by rotating the bidirectional threaded rod, and cooperate with the sliding action between the connecting shaft and the card strip and the installation shaft to achieve the position adjustment of the front and rear conveyor belts; S2: Through the action of the dual-axis motor, the mounting shaft, the connecting shaft and the clamping strip, the roller and the conveyor belt are operated to realize the transportation of the PCB board; S3: When the PCB board moves to the clamping mechanism position, the dual-axis motor stops rotating, and the second cylinder starts to drive the fixed plate, top plate, clamping plate, vertical rod and inclined plate to move. Through the sliding action between the inclined plate and the sliding rod, the PCB board moves up to cooperate with the top plate, and then the top plate and clamping plate realize the clamping and positioning of the PCB board, and finally the patch operation can be performed through the patch assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The SMT patch device with high adaptability and the patch method thereof can adjust the distance between the front and rear movable frames through the action of the bidirectional threaded rod, thereby realizing the distance adjustment between the front and rear conveyor belts, so as to meet the conveying and processing of PCB boards of different widths. The sliding action between the connecting shaft and the card strip and the installation shaft can ensure the normal operation of the adjustment, and the card strip and the installation shaft can realize the normal transmission action through the card action, so as to ensure that the dual-axis motor can drive the roller and the conveyor belt to operate normally; 2. The SMT patch device with high adaptability and the patch method thereof, when clamping the PCB board, the inclined plate is moved by the action of the second cylinder, the fixed plate and the vertical rod, and the sliding action between the inclined plate and the slide rod is cooperated to make the support plate contact with the PCB board, and the PCB board is lifted up to be flush with the fixed plate, which is convenient for the subsequent clamping and limiting of the PCB board, and the front and rear positioning of the PCB board can be achieved through the action of the second cylinder, the fixed plate and the top plate, and the left and right positioning of the PCB board can be achieved by cooperating with the action of the connecting rod, the guide rod and the clamping plate, so as to ensure the stability of the PCB board fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention; Figure 2It is a bottom-up three-dimensional structural schematic diagram of the adjusting mechanism of the present invention; Figure 3 This is a schematic diagram of an exploded three-dimensional structure of the installation shaft and the connecting shaft of the present invention; Figure 4 It is a schematic diagram of the front view of the three-dimensional structure of the patch assembly and the clamping mechanism of the present invention; Figure 5 It is a bottom-up three-dimensional structural schematic diagram of the patch assembly and the clamping mechanism of the present invention; Figure 6 It is a schematic diagram of the front three-dimensional structure of the clamping mechanism of the present invention; Figure 7 It is a bottom-up three-dimensional structural schematic diagram of the clamping mechanism and the lifting mechanism of the present invention.

[0016] In the figure: 1. mounting table; 2. adjustment mechanism; 201. bidirectional threaded rod; 202. movable frame; 203. fixed rod; 204. limit plate; 3. feeding mechanism; 301. dual-axis motor; 302. mounting shaft; 303. roller; 304. conveyor belt; 305. connecting shaft; 306. clamping strip; 4. fixing frame; 5. patch assembly; 501. longitudinal linear motor; 502. transverse linear motor; 503. 03, first cylinder; 504, placement machine; 6, clamping mechanism; 601, second cylinder; 602, fixing plate; 603, first spring; 604, top plate; 605, guide rod; 606, clamping plate; 607, connecting rod; 608, limiting rod; 7, lifting mechanism; 701, mounting frame; 702, support plate; 703, sliding rod; 704, second spring; 705, inclined panel; 706, vertical rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7The present invention provides a technical solution: an SMT patch device with high adaptability and a patch method thereof, comprising a mounting platform 1, an adjusting mechanism 2 is installed on the mounting platform 1, the adjusting mechanism 2 comprises a bidirectional threaded rod 201, a movable frame 202, a fixed rod 203 and a limit plate 204, the bidirectional threaded rod 201 is connected to the mounting platform 1 by a bearing, the bidirectional threaded rod 201 is connected to the movable frame 202 by a thread, the movable frame 202 and the fixed rod 203 are slidably connected, the fixed rod 203 is fixed on the mounting platform 1, the movable frame 202 is also fixed with a limit plate 204, and a feeder is installed on the adjusting mechanism 2. Structure 3, the feeding mechanism 3 includes a double-axis motor 301, a mounting shaft 302, a roller 303, a conveyor belt 304, a connecting shaft 305 and a clamping strip 306. The double-axis motor 301 is fixed on the mounting platform 1, and the mounting shaft 302 is fixed on the output end of the double-axis motor 301. The roller 303 bearing is connected to the movable frame 202. The roller 303 is also connected to the conveyor belt 304. The connecting shaft 305 is fixed on the roller 303, and the connecting shaft 305 and the mounting shaft 302 are slidably connected. The connecting shaft 305 is also fixed with a clamping strip 306 at an equal angle, and the clamping strip 306 and the mounting shaft 302 are snap-fitted.

[0019] When using this highly adaptable SMT patch device, Figure 1-Figure 7 As shown, firstly, the distance between the front and rear conveyor belts 304 is adjusted according to the width of the PCB board to be patched, and the movable frame 202 is forced to move by rotating the bidirectional threaded rod 201 in cooperation with the threaded connection between the bidirectional threaded rod 201 and the movable frame 202, and the sliding guide effect between the movable frame 202 and the fixed rod 203 can ensure the stability of the movement of the movable frame 202. When the movable frame 202 moves, the roller 303 and the conveyor belt 304 are synchronously driven to move, thereby realizing the adjustment of the distance between the front and rear conveyor belts 304, and when the roller 303 moves, the connecting shaft is cooperated The sliding action between 305 and the clamping strip 306 and the installation shaft 302 can ensure the stability of the movement of the roller 303. After the adjustment is completed, the PCB board that needs to be patched is placed on the conveyor belt 304. By starting the dual-axis motor 301 to drive the installation shaft 302 to rotate, the clamping action between the installation shaft 302 and the clamping strip 306 can synchronously drive the connecting shaft 305 and the roller 303 to rotate, so that the conveyor belt 304 can be operated, thereby realizing the automatic feeding of the PCB board. In the process of moving the PCB board, the PCB board can be limited by cooperating with the limit plate 204 to ensure the stability of the movement of the PCB board. A fixing frame 4 is fixed on the upper end of the mounting table 1, and a patch assembly 5 is installed on the fixing frame 4, and a clamping mechanism 6 is also installed on the fixing frame 4, and the clamping mechanism 6 is connected to the lifting mechanism 7; the patch assembly 5 includes a longitudinal linear motor 501, a transverse linear motor 502, a first cylinder 503 and a patch machine 504, the longitudinal linear motor 501 is fixed on the fixing frame 4, and a transverse linear motor 502 is installed on the longitudinal linear motor 501, and a first cylinder 503 is installed on the transverse linear motor 502, and the patch machine 504 is fixed on the output end of the first cylinder 503. 04; the clamping mechanism 6 includes a second cylinder 601, a fixed plate 602, a first spring 603, a top plate 604, a guide rod 605, a clamping plate 606 and a connecting rod 607. The second cylinder 601 is fixed to the fixed frame 4, and the output end of the second cylinder 601 is fixed with a fixed plate 602, and one end of the first spring 603 is fixed on the fixed plate 602, and the other end of the first spring 603 is fixed on the top plate 604. A limit rod 608 is also fixed on the top plate 604, and the limit rod 608 is slidably connected to the fixed plate 602; the left and right pairs of the top plate 604 are fixed to each other. A guide rod 605 is fixed thereon, and the guide rod 605 is slidably connected to the clamping plate 606, and the height of the clamping plate 606 is equal to that of the top plate 604; one end of a connecting rod 607 is rotatably connected to the clamping plate 606, and the other end of the connecting rod 607 is rotatably connected to the fixed plate 602, and the connecting rod 607 is symmetrically distributed about the center line of the fixed plate 602; the lifting mechanism 7 includes a mounting frame 701, a supporting plate 702, a sliding rod 703, a second spring 704, an inclined plate 705 and a vertical rod 706, the mounting frame 701 is fixed on the mounting platform 1, and the mounting frame A support plate 702 is arranged above 701, and the upper end surface of the support plate 702 is lower than the upper end surface of the conveyor belt 304; a slide bar 703 is fixed symmetrically on the lower end surface of the support plate 702, and the slide bar 703 is slidably connected to the mounting frame 701, and a second spring 704 is also fixed between the slide bar 703 and the mounting frame 701; the slide bar 703 is slidably connected to the inclined plate 705, and the inclined plate 705 is slidably connected to the mounting platform 1, and one end of the vertical rod 706 is fixed on the inclined plate 705, and the other end of the vertical rod 706 is fixed on the fixed plate 602; In the PCB board material process, such as Figure 1-Figure 7As shown in the figure, when the PCB board moves between the two clamping mechanisms 6, the dual-axis motor 301 stops running and the second cylinder 601 is started to extend, thereby driving the fixed plate 602, the top plate 604, the vertical rod 706 and the inclined plate 705 to move. With the sliding guide effect between the inclined plate 705 and the mounting platform 1, the stability of the movement of the inclined plate 705 can be ensured. When the inclined plate 705 moves, with the sliding effect between the inclined plate 705 and the slide bar 703, the slide bar 703 and the support plate 702 are forced to move. The sliding guide between the slide bar 703 and the mounting frame 701 can ensure the stability of the upward movement of the support plate 702. When the support plate 702 contacts the PCB board, the PCB board is forced to move upward until the slide bar 703 slides to the plane position of the inclined plate 705. At this time, the lower end surface of the PCB board moves to be flush with the center of the top plate 604, which is convenient for the subsequent fixation of the PCB board. At this time, the top plate 604 is not in contact with the PCB board. The second cylinder 601 continues to extend to continue to drive the fixing plate 602 and the top plate 604 moves, and when the top plate 604 contacts the PCB board, the front and rear limit of the PCB board can be achieved. At this time, the second cylinder 601 continues to extend. Since the top plate 604 contacts the PCB board to achieve limit, the fixed plate 602 moves relative to the top plate 604. The sliding guide effect between the limit rod 608 and the fixed plate 602 can ensure the stability of the movement of the fixed plate 602. In combination with the transmission effect of the connecting rod 607, the clamping plate 606 is forced to move. The sliding guide effect between the clamping plate 606 and the guide rod 605 can ensure the stability of the movement of the clamping plate 606 until the clamping plate 606 contacts the PCB board, thereby achieving the left and right limit of the PCB board and ensuring the stability of the PCB board fixation. After the PCB board is fixed, the multi-directional adjustment effect of the placement machine 504 can be achieved through the effects of the longitudinal linear motor 501, the transverse linear motor 502 and the first cylinder 503, so as to perform normal placement. This is the working principle of the SMT placement device with high adaptability and the placement method thereof.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly adaptable SMT patch device, comprising a mounting table (1), characterized in that: An adjusting mechanism (2) is installed on the mounting platform (1), and the adjusting mechanism (2) comprises a bidirectional threaded rod (201), a movable frame (202), a fixed rod (203) and a limit plate (204). The bidirectional threaded rod (201) is connected to the mounting platform (1) by a bearing, and the bidirectional threaded rod (201) is connected to the movable frame (202) by threads. The movable frame (202) and the fixed rod (203) are slidably connected, and the fixed rod (203) is fixed on the mounting platform (1). The limit plate (204) is also fixed on the movable frame (202). A feeding mechanism (3) is installed on the adjusting mechanism (2), and the feeding mechanism (3) comprises a double-axis motor (301). , a mounting shaft (302), a roller (303), a conveyor belt (304), a connecting shaft (305) and a clamping strip (306), wherein the dual-axis motor (301) is fixed on the mounting platform (1), the output end of the dual-axis motor (301) is fixed with the mounting shaft (302), the bearing of the roller (303) is connected to the movable frame (202), the roller (303) is also connected with the conveyor belt (304), the connecting shaft (305) is fixed on the roller (303), and the connecting shaft (305) and the mounting shaft (302) are slidably connected, and the clamping strip (306) is fixed on the connecting shaft (305) at an equal angle, and the clamping strip (306) and the mounting shaft (302) are clamped.

2. The SMT patch device with high adaptability according to claim 1, characterized in that: A fixing frame (4) is fixed on the upper end of the mounting platform (1), and a patch assembly (5) is mounted on the fixing frame (4). A clamping mechanism (6) is also mounted on the fixing frame (4), and the clamping mechanism (6) and the lifting mechanism (7) are connected to each other.

3. The SMT patch device with high adaptability according to claim 2, characterized in that: The patch assembly (5) comprises a longitudinal linear motor (501), a transverse linear motor (502), a first cylinder (503) and a patch machine (504); the longitudinal linear motor (501) is fixed on a fixing frame (4); the transverse linear motor (502) is mounted on the longitudinal linear motor (501); the first cylinder (503) is mounted on the transverse linear motor (502); and the patch machine (504) is fixed to the output end of the first cylinder (503).

4. The SMT patch device with high adaptability according to claim 3, characterized in that: The clamping mechanism (6) comprises a second cylinder (601), a fixed plate (602), a first spring (603), a top plate (604), a guide rod (605), a clamping plate (606) and a connecting rod (607); the second cylinder (601) is fixed on the fixed frame (4); the fixed plate (602) is fixed to the output end of the second cylinder (601); one end of the first spring (603) is fixed to the fixed plate (602); the other end of the first spring (603) is fixed to the top plate (604); a limiting rod (608) is also fixed to the top plate (604); and the limiting rod (608) and the fixed plate (602) are slidably connected.

5. The SMT patch device with high adaptability according to claim 4, characterized in that: The top plate (604) is symmetrically fixed with guide rods (605), the guide rods (605) and the clamping plate (606) are slidably connected, and the clamping plate (606) and the top plate (604) are at the same height.

6. The SMT patch device with high adaptability according to claim 4, characterized in that: One end of a connecting rod (607) is also rotatably connected to the clamping plate (606), and the other end of the connecting rod (607) is rotatably connected to the fixed plate (602), and the connecting rod (607) is symmetrically distributed about the center line of the fixed plate (602).

7. The SMT patch device with high adaptability according to claim 6, characterized in that: The lifting mechanism (7) comprises a mounting frame (701), a supporting plate (702), a sliding rod (703), a second spring (704), an inclined plate (705) and a vertical rod (706); the mounting frame (701) is fixed on the mounting platform (1); a supporting plate (702) is arranged above the mounting frame (701); and an upper end surface of the supporting plate (702) is lower than an upper end surface of the conveyor belt (304).

8. The SMT patch device with high adaptability according to claim 7, characterized in that: A sliding rod (703) is fixed symmetrically to the lower end surface of the support plate (702), and the sliding rod (703) is slidably connected to the mounting frame (701), and a second spring (704) is also fixed between the sliding rod (703) and the mounting frame (701).

9. The SMT patch device with high adaptability according to claim 7, characterized in that: The sliding rod (703) and the inclined panel (705) are slidably connected, and the inclined panel (705) and the mounting platform (1) are slidably connected, and one end of a vertical rod (706) is fixed to the inclined panel (705), while the other end of the vertical rod (706) is fixed to the fixed plate (602).

10. A patch method applied to a SMT patch device with high adaptability as claimed in claim 9, characterized in that: The steps are as follows: S1: The position of the conveyor belt (304) is adjusted according to the width of the PCB board to be patched, and the movable frame (202) is moved by rotating the bidirectional threaded rod (201), and the sliding action between the connecting shaft (305) and the clamping strip (306) and the installation shaft (302) is coordinated to achieve the position adjustment of the front and rear conveyor belts (304); S2: Through the action of the dual-axis motor (301), the mounting shaft (302), the connecting shaft (305) and the clamping strip (306), the roller (303) and the conveyor belt (304) are operated, thereby realizing the conveyance of the PCB board; S3: When the PCB board moves to the position of the clamping mechanism (6), the dual-axis motor (301) stops rotating, and the second cylinder (601) starts to drive the fixed plate (602), the top plate (604), the clamping plate (606), the vertical rod (706) and the inclined plate (705) to move. Through the sliding action between the inclined plate (705) and the sliding rod (703), the PCB board moves up to cooperate with the top plate (604), and then the top plate (604) and the clamping plate (606) realize the clamping and positioning of the PCB board. Finally, the patch operation can be performed through the patch assembly (5).

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