CN100558226C - Device for correcting pin planeness of electron device - Google Patents

Abstract

An electronic device flatness adjustment machine, including a frame, a feeding mechanism, a pressing mechanism, a lower pressing mechanism and an upper punching mechanism; a foot adjustment station for electronic devices is arranged on the frame; the feeding mechanism consists of a feeding plate and a feeding cylinder Composition, the working end of the feeding cylinder is connected with the feeding plate, and drives the feeding plate in the horizontal direction to enter or exit the whole foot station; the pressing mechanism is composed of a pressing plate and a pressing cylinder, and the working end of the pressing cylinder is connected with the pressing plate , and drive the pressing plate in the vertical direction to move down and press or move up to release the electronic devices on the feeding plate; the pressing mechanism is composed of a pressing plate and a pressing cylinder, and the working end of the pressing cylinder is connected with the pressing plate. And drive the lower platen to move up and down in the vertical direction; the upper punch mechanism is composed of the top plate and the upper punch cylinder, and the action end of the upper punch cylinder is connected with the top plate, and drives the top plate to move up and down in the vertical direction. This solution solves the problem of poor flatness of pins of electronic devices, improves production efficiency, and ensures product quality.

Description

Electronic device pin flatness machine

technical field

The present invention relates to a tooling device, in particular to an electronic device pin flatness adjustment machine, which is used to adjust the soldering points of each pin of the electronic device to be in the same plane, so as to be reliably welded on the surface of the PCB .

Background technique

At present, the integrated circuits (IC) used in advanced electronic products, especially in computer and communication electronic products, have no socket components, especially large-scale and highly integrated ICs, all use surface mount components; Accurately mounting these patch components to the corresponding positions on the PCB surface requires the use of Surface Mounting Technology (SMT) to complete.

A typical surface mount process is divided into three steps: applying solder paste - mounting components - reflow soldering. That is, apply an appropriate amount of solder paste evenly on the pads of the PCB to ensure that the pads corresponding to the SMD components and the PCB achieve good electrical connection and have sufficient mechanical strength during reflow soldering; The chip components are accurately mounted to the corresponding positions on the PCB surface printed with solder paste; then when the PCB enters the preheating temperature zone of 140 ° C ~ 160 ° C, the solvent and gas in the solder paste evaporate, and at the same time, the solder The flux in the paste wets the pads, component terminals and pins, and the solder paste softens and collapses, covering the pads, isolating the pads, component pins from oxygen; and making surface mount components get Sufficient preheating, and then when entering the welding area, the temperature rises rapidly to 270°C to make the solder paste reach a molten state, and the liquid solder diffuses on the pads, component soldering ends and leads of the PCB, making it wet, diffuse and reflow mixed Metal compounds are generated on the welding interface to form solder joints; finally, the PCB enters the cooling zone to solidify the solder joints.

But often because the solder joints of the pins of the mounted components are not on the same plane, that is, the solder joints of all pins cannot be attached to the corresponding positions on the PCB surface at the same time, so after reflow soldering, some pins are on the same plane. When the solder paste melts, due to its own unevenness or suspension, the liquid solder cannot infiltrate the pins of these components, resulting in the fact that the pins of the components and the PCB pad cannot be interconnected by the solder after cooling, and become virtual soldering. , affecting product quality. In the prior art, in order to ensure the flatness of each pin of the component (making each pin in the same plane), it is necessary to use a tool to measure whether each pin can be attached to the same plane at the same time before mounting. When it is found that there are pins hanging in the air or uneven, the flatness is adjusted manually with manual tools such as tweezers. However, because manual adjustment is only controlled by feeling, it is very difficult to adjust, and problems such as poor consistency and poor flatness often occur; and manual operation is labor-intensive, time-consuming, and production efficiency is low; it cannot cope with product batching and production automation demand.

Therefore, how to solve the problem of low efficiency and unguaranteed quality of the manual adjustment of the flatness of each pin of this component is the content that those skilled in the art are emphatically studying.

Contents of the invention

The invention provides a pin flatness adjustment machine for electronic devices, the main purpose of which is to solve the problem of poor flatness of the pins of electronic devices, improve production efficiency, and ensure product quality.

In order to achieve the above-mentioned purpose, the technical solution adopted in the present invention is: a kind of electronic device flatness adjustment machine, including frame, feeding mechanism, pressing mechanism, pressing mechanism and punching mechanism; whole foot station;

The feeding mechanism is composed of a feeding plate and a feeding cylinder, and the feeding plate is slidably connected with the frame in the horizontal direction; the feeding plate is provided with a number of positioning seats for electronic devices, and the pins of the corresponding electronic devices around each positioning seat are provided with Longitudinal channel, so that the pins of the electronic device are suspended in the longitudinal channel; the active end of the feeding cylinder is connected with the feeding plate, and drives the feeding plate in the horizontal direction to enter or exit the whole foot station;

The pressing mechanism is composed of a pressing plate and a pressing cylinder. On the whole foot station, the pressing plate is located above the feeding plate and is slidably connected with the frame in the vertical direction; the pressing plate corresponds to the position of the electronic device. The pin part is also provided with a longitudinal channel; the action end of the compression cylinder is connected with the compression plate, and drives the compression plate in the vertical direction to move down to compress or move up to release the electronic devices on the feeding plate;

The lower pressing mechanism is composed of a lower pressing plate and a lower pressing cylinder. The lower pressing plate is located above the pressing plate and is slidably connected with the frame in the vertical direction; the bottom of the lower pressing plate corresponds to the longitudinal channel position of the pressing plate. block; the action end of the lower pressure cylinder is connected with the lower pressure plate, and drives the lower pressure plate to move up and down in the vertical direction. Each pin pressing block presses down the pins on each electronic device through the longitudinal channel, and each pin pressing block releases the pins on each electronic device when the lower pressing plate moves;

The upper punching mechanism is composed of a top plate and an upper punching cylinder. The top plate is located under the feeding plate and is vertically slidably connected with the frame; the top of the top plate is provided with a pin lifting block corresponding to the longitudinal passage of the feeding plate; the upper punching cylinder The action end is connected with the top plate and drives the top plate to move up and down in the vertical direction. The upper punch mechanism is provided with an adjustable upper punch stroke limit structure in the upward movement direction. When the top plate moves, each pin lifting block passes through The longitudinal passage lifts the pins on each electronic device, and when the top plate moves down, each pin lifting block releases the pins on each electronic device.

The relevant content in the above-mentioned technical scheme is explained as follows:

1. In the above solution, the positioning seat is provided with a relief slot corresponding to the positioning column on the electronic device.

2. In the above solution, a soft layer is provided on the contact surface between the pressing plate and the electronic device.

3. In the above scheme, the limit structure of the lower pressure stroke is that an adjustment hole is provided on the lower pressure plate, and a limit adjustment bolt is arranged in the adjustment hole. Bolts are fitted with fastening nuts.

4. In the above scheme, the limit structure of the upper stroke stroke is that an adjustment hole is provided on the top plate, and a limit adjustment bolt is arranged in the adjustment hole. Bolts are fitted with fastening nuts.

Due to the application of the above-mentioned technical scheme, compared with the prior art, the present invention uses a device pin leveling machine to adjust the flatness of the device pins, so that the device pins have good consistency and good flatness; and it is less expensive than the previous manual operation. Time-saving, labor-saving, high production efficiency; meet the needs of product batching and production automation.

Description of drawings

Accompanying drawing 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention;

Accompanying drawing 2 is the three-dimensional structure schematic diagram II of the embodiment of the present invention;

Accompanying drawing 3 is the front view of embodiment of the present invention;

Accompanying drawing 4 is the working principle diagram of the embodiment of the present invention;

Accompanying drawing 5 is the schematic diagram of the feeding mechanism of the embodiment of the present invention;

Accompanying drawing 6 is the schematic diagram of pressing mechanism of the embodiment of the present invention;

Accompanying drawing 7 is the schematic diagram of pressing down mechanism of the embodiment of the present invention;

Accompanying drawing 8 is the schematic diagram of the punching mechanism of the embodiment of the present invention;

Accompanying drawing 9 is the schematic diagram of feeding plate of the embodiment of the present invention;

Accompanying drawing 10 is the schematic diagram of the frame bottom plate of the embodiment of the present invention.

In the above drawings: 1. Rack; 2. Feeding plate; 3. Slide track; 4. Positioning seat; 5. Longitudinal channel; Compression plate; 10. Compression cylinder; 11. Longitudinal channel; 12. Guide hole; 13. Guide column; 14. Lower pressure plate; 15. Lower pressure cylinder; 16. Pin briquetting block; Cylinder; 20, pin lifting block; 21, bottom plate; 22, perforation; 23, soft layer; 24, adjusting bolt; 25, adjusting hole; 26, fastening nut; 28, guide column; 29, adjusting bolt; 30 , adjusting hole; 31, fastening nut.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Example:

As shown in Fig. 1, Fig. 2, Fig. 3, a kind of electronic device flatness leg adjustment machine comprises frame 1, feeding mechanism, pressing mechanism, pressing mechanism and punching mechanism, described frame 1 is provided with Guide column 13, guide column 28 and base plate 21, and the base plate 21 of frame 1 is provided with perforation 22, and the whole foot station 8 of electronic device is formed above its base plate 21, wherein: feeding mechanism, hold-down mechanism, press-down mechanism The spatial position and principle of the upper punching mechanism at work are shown in Figure 4.

The feeding mechanism, as shown in Figure 5, is composed of a feeding plate 2 and a feeding cylinder 7. The feeding plate 2 is slidably connected to the frame 1 through the slide rail 3 in the horizontal direction, and the feeding plate 2 is provided with 6 devices Positioning seat 4 and 7 longitudinal channels 5, each positioning seat 4 and each longitudinal channel 5 are arranged in the order of longitudinal channel 5-positioning seat 4-longitudinal channel 5, so that the pins of the electronic device are suspended in the longitudinal channel 5 ; The positioning column (not shown) on the corresponding electronic device on the described positioning seat 4 is provided with a relief groove 6 (as shown in Figure 9); the action end of the feeding cylinder 7 is connected with the feeding plate 2, and Drive the feeding plate 2 in the direction to slide into and out of the whole foot station 8;

The hold-down mechanism, as shown in Figure 6, is made of hold-down plate 9 and hold-down cylinder 10, on the whole foot station 8, hold-down plate 9 is positioned at the top of above-mentioned feeding plate 2, and this hold-down plate 9 is provided with Guide hole 12, the guide hole 12 cooperates with the guide column 13 on the frame 1 and is slidably connected with the frame 1 in the vertical direction; and the longitudinal channel 5 position on the feeding plate 2 is provided with a longitudinal channel corresponding to the whole foot station 8 11. A soft layer 23 is provided on the contact surface between the pressing plate 9 and the electronic device to buffer the force when the pressing plate 9 is pressed down, so as to protect the contact surface of the device from damage; Connect with the pressing plate 9, and drive the pressing plate 9 in the vertical direction to move down and press or move up to release the electronic devices on the feeding plate 2;

Pressing down mechanism, as shown in Figure 7, is made of pressing down plate 14 and pressing down cylinder 15, and pressing down plate 14 is positioned at the top of above-mentioned pressing plate 9, and described down pressing plate 14 is provided with guide hole (not shown in the figure), The guide hole cooperates with the guide column 13 on the frame 1 and is slidably connected with the frame 1 in the vertical direction; the bottom of the lower pressing plate 14 corresponds to the longitudinal channel 11 of the pressing plate 9 and is provided with a pin pressing block 16. The foot pressing block 16 passes through the longitudinal channel 11 on the pressing plate 9 when the lower pressing plate 14 is pressed down. The lower pressing plate 14 is provided with an adjustment hole 25, and the adjustment hole 25 is provided with a limit adjustment bolt 24, which can be adjusted by the limit adjustment. The bolt 24 is threadedly matched with the adjustment hole 25, and the limit adjustment bolt 24 is equipped with a fastening nut 26, so as to adjust the height of the pressing down of the pin pressing block 16; , and drive the lower pressing plate 14 to move up and down in the vertical direction along the guide column 13 in the vertical direction; Each pin pressing block 16 releases the pins on each electronic device when 14 moves up;

The upper punching mechanism, as shown in Figure 8, is composed of a top plate 18 and an upper punching cylinder 19. The top plate 18 is located under the upper bottom plate 21 of the frame 1 below the feed plate 2, and the bottom plate 21 corresponds to the feeding plate at the whole foot station 8. The position of the longitudinal channel 5 of 2 is provided with a perforation 22 (as shown in Figure 10), and the position of the perforation 22 on the corresponding base plate 21 is provided with a pin lifting block 20 on the top plate 18, and the pin lifting block 20 is punched on the top plate 18. Pass through the perforation 22 on the bottom plate 21; the top plate 18 is provided with a guide hole (not shown in the figure), and the guide hole cooperates with the guide column 28 on the frame 1 to be slidably connected with the frame 1 in the vertical direction; An adjustment hole 30 is provided on the top plate 18, and a limit adjustment bolt 29 is arranged in the adjustment hole 30. The limit adjustment bolt 29 is threadedly matched with the adjustment hole 30, and a fastening nut 31 is provided on the limit adjustment bolt 29. , to adjust the height of the upper punch of the pin lifting block 20; the action end of the upper punch cylinder 19 is connected with the top plate 18, and drives the top plate 18 in the vertical direction to move up and down in the vertical direction along the guide column 28, when the top plate 18 When moving, each pin lifts 20 pieces and lifts the pins on each electronic device by longitudinal passage 5, and each pin lifts block 20 to release the pins on each electronic device when top plate 18 moves down.

During work, the transformer (not shown in the figure) is placed on the positioning seat 4 of the feeding plate 2 earlier, and the positioning column on the transformer cooperates with the relief groove 6 on the positioning seat 4, and each pin on the transformer is suspended in the feeding position. In the longitudinal channel on the plate 2, start the feed cylinder 7, the feed cylinder 7 drives the feed plate 2 into the whole foot station 8, and now starts the compression cylinder 10 to drive the compression plate 9 to press down along the guide column 13, thereby Fix the transformer, start the pressing cylinder 15 again at this time, the pressing cylinder 15 drives the pressing plate 14 to press down along the guide column 13, then the pin pressing block 16 on the pressing plate 14 passes through the longitudinal channel 11 on the pressing plate 9 to Lower each pin on the impact transformer, so that each pin on the transformer is pressed down in the longitudinal channel 5 on the feed plate 2. After the impact once, the lower pressure cylinder 15 automatically resets, and then starts the upper punch cylinder 19. , then the upper punching cylinder 19 drives the top plate 18 to move up along the guide column 28. At this time, the pin lifting block 20 on the top plate 18 passes through the perforation 22 on the bottom plate 21 of the frame 1, and each of the pressed down parts on the transformer The pins are punched up and impacted twice in a row to achieve the smoothness of each pin. After that, the punching cylinder 19 automatically resets to complete the whole pin work of a transformer.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (3)

1, a kind of device for correcting pin planeness of electron device is characterized in that: comprise frame (1), feed mechanism, hold-down mechanism, press mechanism and upper punch mechanism; Frame (1) is provided with the whole pin station (8) of electronic device;

Feed mechanism is made of delivery sheet (2) and feeding cylinder (7), and delivery sheet (2) is slidingly connected in the horizontal direction with frame (1); Described delivery sheet (2) is provided with several electronic device positioning seats (4), and the pin position of the peripheral corresponding electronic device of each positioning seat (4) is provided with vertical passage (5), makes the pin of electronic device unsettled in this vertical passage (5); Feeding cylinder (7) effect end links to each other with delivery sheet (2), and (2) enter or withdraw from whole pin station (8) to drive delivery sheet in the horizontal direction;

Hold-down mechanism is made of pressure strip (9) and clamping cylinder (10), and on whole pin station (8), pressure strip (9) is positioned at delivery sheet (2) top, and is slidingly connected at vertical direction with frame (1); The pin position that described pressure strip (9) is gone up corresponding electronic device also is provided with vertical passage (11); Clamping cylinder (10) effect end links to each other with pressure strip (9), and in the vertical direction driving pressure strip (9) move down compress or on move each electronic device on the relieving delivery sheet (2);

Press mechanism is made of lower platen (14) and following air cylinder (15), and lower platen (14) is positioned at pressure strip (9) top, and is slidingly connected at vertical direction with frame (1); Vertical passage (11) position of described lower platen (14) the corresponding pressure strip in bottom (9) is provided with pin briquetting (16); Following air cylinder (15) effect end links to each other with lower platen (14), and in the vertical direction driving lower platen (14) moves up and down, described press mechanism is provided with the adjustable stroke limit structure that presses down moving down on the direction, when lower platen (14) when moving down each pin briquetting (16) press down pin on each electronic device by vertical passage (11), each pin briquetting (16) is decontroled the pin on each electronic device when moving on the lower platen (14);

Upper punch mechanism is made of top board (18) and upper punch cylinder (19), and top board (18) is positioned at delivery sheet (2) below, and is slidingly connected at vertical direction with frame (1); Vertical passage (5) position of the corresponding delivery sheet in described top board (18) top (2) is provided with pin and lifts piece (20); Upper punch cylinder (19) effect end links to each other with top board (18), and in the vertical direction driving top board (18) moves up and down, described upper punch mechanism is provided with adjustable upper punch stroke limit structure last moving on the direction, each pin is lifted piece (20) and is lifted pin on each electronic device by vertical passage (5) when moving on the top board (18), when top board (18) when moving down each pin lift piece (20) and decontrol pin on each electronic device.

2, device for correcting pin planeness of electron device according to claim 1 is characterized in that: the reference column that described positioning seat (4) is gone up on the corresponding electronic device is provided with slot to make way (6).

3, device for correcting pin planeness of electron device according to claim 1 is characterized in that: described pressure strip (9) is provided with soft layer (23) with the electronic device contact-making surface.

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