CN216414715U - Full-automatic PIN mechanism of beating of high-efficient PCB board of high accuracy - Google Patents

Abstract

The utility model discloses a high-precision high-efficiency PCB full-automatic PIN printing mechanism which comprises a conveying device, a pre-positioning device and a fine positioning device which are positioned below the conveying device and used for positioning a plate on the conveying device, a supporting platform arranged at the tail end of the conveying device, PIN printing devices arranged on two sides of the supporting platform, a first carrying device used for carrying the plate from the position of the pre-positioning device to the position of the fine positioning device, and a second carrying device used for carrying the plate from the position of the fine positioning device to the supporting platform, wherein the pre-positioning device and the fine positioning device are arranged on the lower portion of the conveying device; the pre-positioning device and the fine positioning device are arranged along the conveying device. The utility model can accurately position and PIN-print PCB circuit boards with different specifications and sizes, and improves the processing efficiency and the processing precision.

Description

Full-automatic PIN mechanism of beating of high-efficient PCB board of high accuracy

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of PCB (printed circuit board) manufacturing equipment, and particularly relates to a high-precision and high-efficiency full-automatic PIN printing mechanism for a PCB.

[ background of the utility model ]

At present, the manufacturing process of a PCB is very complex, wherein one process link is drilling, before drilling, in order to protect the surface of the PCB from being damaged and prevent the PCB from cracking or deforming during drilling, therefore, the existing process generally places the PCB on a bottom plate, then covers a cover plate on the surface of the PCB to form a combined plate, protects the surface of the PCB, in order to guarantee the accuracy of the drilling position, the bottom plate, the PCB and the cover plate need to be combined into a whole to guarantee the position of the bottom plate, the PCB and the cover plate by adopting a positioning PIN needle, and the process becomes PIN drilling operation. Then, the PCB enters the drilling equipment for drilling, after the drilling is finished, because subsequent processing is carried out aiming at the PCB, only the middle PCB is needed, the bottom plate, the PCB and the cover plate are needed to be disassembled, the positioning PIN needle is taken out from the combined plate, the process is called as PIN discharging operation, and the subsequent assembly line processing is convenient to carry out. At present, the drilling of a PCB factory is manually carried out one by one for feeding and positioning, the feeding efficiency is low, and the production rhythm of the whole line is seriously influenced; and the positioning of the plate is realized through the side edge positioning, the positioning precision is not enough during the lamination, the high-precision lamination processing is difficult to realize, and the processing precision is seriously influenced.

Therefore, it is necessary to provide a new high-precision and high-efficiency fully-automatic PIN printing mechanism for a PCB to solve the above problems.

[ Utility model ] content

The utility model mainly aims to provide a high-precision high-efficiency full-automatic PIN printing mechanism for a PCB, which can accurately position and print PIN on PCB circuit boards with different specifications and sizes, and improves the processing efficiency and the processing precision.

The utility model realizes the purpose through the following technical scheme: a high-precision high-efficiency PCB full-automatic PIN printing mechanism comprises a conveying device, a pre-positioning device and a fine positioning device which are positioned below the conveying device and used for positioning a board on the conveying device, a supporting platform arranged at the tail end of the conveying device, PIN printing devices arranged on two sides of the supporting platform, a first conveying device used for conveying the board from the position of the pre-positioning device to the position of the fine positioning device, and a second conveying device used for conveying the board from the position of the fine positioning device to the supporting platform; the pre-positioning device and the fine positioning device are arranged along the conveying device.

Further, the pre-positioning device comprises a front positioning unit for blocking the advancing direction of the plate on the conveying device, a first side positioning unit for limiting the position of one side edge of the plate and a second side positioning unit for limiting the position of the other side edge of the plate;

the front positioning unit comprises a first motor, a first supporting plate driven by the first motor to move left and right, and a plurality of first stop levers arranged on the first supporting plate at intervals; the first lateral positioning unit comprises a first air cylinder, a second supporting plate driven by the first air cylinder to move back and forth, and a plurality of second stop levers arranged on the second supporting plate at intervals; the second lateral positioning unit comprises a second motor, a third supporting plate driven by the second motor to move back and forth, and a plurality of third stop levers arranged on the third supporting plate at intervals.

Further, the fine positioning device comprises two hole positioning units which are oppositely arranged; the hole positioning unit comprises a third motor, a fourth supporting plate driven by the third motor to move back and forth, a fourth motor fixed on the fourth supporting plate, a fifth supporting plate driven by the fourth motor to move left and right, a second air cylinder fixed on the fifth supporting plate, a first positioning thimble driven by the second air cylinder to move up and down, and a first CCD camera fixed on the fifth supporting plate and positioned right above the first positioning thimble.

Further, beat PIN device and beat PIN unit including relative two that set up, beat PIN unit and include that the location that carries out the location to the PCB board supports the module, be located the direction of location support module top compresses tightly the module, is located the direction compresses tightly the PIN needle of module top and impresses the module and sends into the PIN needle feed material loading module in the module is compressed tightly to the direction.

Furthermore, in the two PIN printing units, one PIN printing unit is fixedly arranged, and the other PIN printing unit is movably arranged on an X-axis driving module.

Furthermore, the positioning and supporting module comprises a supporting block for supporting the PCB, a seventh cylinder located below the supporting block, and a second positioning thimble driven by the seventh cylinder to move up and down, wherein the second positioning thimble is driven by the seventh cylinder to upwards penetrate through the supporting block and be inserted into a PIN pinhole of the PCB to position the PCB.

Furthermore, the guide compressing module comprises a sixth air cylinder, a seventh supporting plate driven by the sixth air cylinder to move up and down, a positioning pressure head fixed below the seventh supporting plate and used for compressing the PCB, and a guide seat fixed on the seventh supporting plate.

Further, the PIN pressing module comprises a third cylinder and a PIN hitting thimble driven by the third cylinder to move up and down; the guide seat is provided with a guide through hole; the PIN punching thimble is driven by the third cylinder to penetrate through the guide through hole.

Further, the PIN feeding module comprises a PIN feeding module, a PIN feeding module and a PIN feeding module for supplying PIN to the PIN feeding module;

the PIN needle feeding module comprises a fourth cylinder and a PIN needle feeding nozzle which is driven by the fourth cylinder to move horizontally;

the PIN needle feeding module comprises a fifth air cylinder, a staggered distributing block driven by the fifth air cylinder to move horizontally, a first material receiving nozzle positioned above the staggered distributing block and a second material receiving nozzle positioned below the staggered distributing block, wherein the first material receiving nozzle and the second material receiving nozzle are arranged in a staggered mode, and a distributing pore passage which is butted with the first material receiving nozzle at a first position and is butted with the second material receiving nozzle at a second position is formed in the staggered distributing block; the staggered distributing block is driven by the fifth air cylinder to switch between the first position and the second position;

the second material receiving nozzle is communicated with the PIN needle feeding nozzle through a hose; the output end of the PIN needle feeding module is communicated with the first material receiving nozzle through a hose;

the PIN needle feeding nozzle is driven by the fourth cylinder to move to the position above the guide seat, is in butt joint with the guide through hole, and sends the PIN needle into the guide through hole.

Further, the PIN printing unit further comprises a second CCD camera for checking the PIN needle printing condition.

Compared with the prior art, the full-automatic PIN printing mechanism for the PCB with high precision and high efficiency has the beneficial effects that: through the design of the pre-positioning device, the fine positioning device and the PIN punching device, and the matching of a conveying and carrying mechanism, the automatic overlapping PIN punching operation of the PCB is realized, the laminated feeding of multiple layers of PCBs is realized, and the feeding efficiency of the streamline production of the PCBs is greatly improved; the position precision of the PCB during lamination is guaranteed through the pre-positioning device and the fine positioning device, and the PIN needle can be smoothly and accurately driven into the PCB; the phenomenon that the board is damaged due to inaccurate positioning when the PIN is printed on the PCB is effectively reduced.

[ description of the drawings ]

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the present invention;

FIG. 3 is a schematic diagram of a pre-positioning device according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a fine positioning apparatus according to an embodiment of the present disclosure;

FIG. 5 is a schematic front view of a fine positioning device according to an embodiment of the present disclosure;

FIG. 6 is a schematic perspective view of a PIN printing device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a PIN printing unit according to an embodiment of the present invention;

FIG. 8 is a schematic front view of a PIN printing unit according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a jacking output device according to an embodiment of the present invention;

the figures in the drawings represent:

100. the high-precision high-efficiency PCB full-automatic PIN printing mechanism is adopted; 101. a PCB board;

1. a conveying device;

2. the pre-positioning device comprises a pre-positioning device 21, a front positioning unit 211, a first motor 212, a first supporting plate 213, a first stop lever 22, a first lateral positioning unit 221, a first cylinder 222, a second supporting plate 223, a second stop lever 23, a second lateral positioning unit 231, a second motor 232, a third supporting plate 233 and a third stop lever;

3. the fine positioning device comprises a fine positioning device 31, a hole positioning unit 311, a third motor 312, a fourth supporting plate 313, a fourth motor 314, a fifth supporting plate 315, a second cylinder 316, a first positioning thimble 317, a first CCD camera 318, a first slide rail 319 and a light source plate;

4. a support platform;

5. the PIN punching device comprises a PIN punching device, 51, a PIN punching unit, 511, a sixth supporting plate, 512, a third air cylinder, 513, PIN punching needles, 514, a PIN needle feeding module, 5141, a fifth air cylinder, 5142, a staggered distributing block, 5143, a first receiving nozzle, 5144, a second receiving nozzle, 515, a PIN needle feeding module, 5151, a fourth air cylinder, 5152, a PIN needle feeding nozzle, 516, a guide pressing module, 5161, a sixth air cylinder, 5162, a seventh supporting plate, 5163, a positioning pressure head, 5164, a guide seat, 517, a positioning supporting module, 5171, a supporting block, 5172, a seventh air cylinder, 5173, a second positioning ejector needle, 518, a PIN needle feeding module, 519 and a second CCD camera; 52. an X-axis drive module;

6. the device comprises a first carrying device 61, a fifth motor 62, an eighth supporting plate 63 and an adsorption module;

7. a second carrying device;

8. jacking output device 81, ninth cylinder 82, support frame 83 and conveying unit.

[ detailed description ] embodiments

The first embodiment is as follows:

referring to fig. 1 to 9, the present embodiment provides a full-automatic PIN printing mechanism 100 for a high-precision and high-efficiency PCB, which includes a conveying device 1, a pre-positioning device 2 and a fine positioning device 3 located below the conveying device 1 and used for positioning a board on the conveying device 1, a supporting platform 4 disposed at the tail end of the conveying device 1, PIN printing devices 5 disposed at two sides of the supporting platform 4, a first conveying device 6 for conveying the board from the pre-positioning device 2 to the fine positioning device 3, and a second conveying device 7 for conveying the board from the fine positioning device 3 to the supporting platform 4. The pre-positioning device 2 and the fine positioning device 3 are arranged along the conveying device 1.

In this embodiment, a PIN printing operation is performed on a PCB factory circuit board, wherein the conveying device 1 adopts a rolling conveying manner of a roller or a roller to meet the supporting and transporting requirements of a heavier PCB board.

The pre-positioning device 2 comprises a front positioning unit 21 for blocking the advancing direction of the plate on the conveying device 1, a first side positioning unit 22 for defining the position of one side of the plate, and a second side positioning unit 23 for defining the position of the other side of the plate. The front positioning unit 21 includes a first motor 211, a first support plate 212 driven by the first motor 211 to move left and right, and a plurality of first stop levers 213 spaced apart from each other and disposed on the first support plate 212. The first lateral positioning unit 22 includes a first cylinder 221, a second support plate 222 driven by the first cylinder 221 to move back and forth, and a plurality of second stoppers 223 disposed at intervals on the second support plate 222. The second lateral positioning unit 23 includes a second motor 231, a third support plate 232 driven by the second motor 231 to move back and forth, and a plurality of third rods 233 arranged on the third support plate 232 at intervals.

In this embodiment, preceding positioning unit 21 adopts servo motor drive, has avoided cylinder driven rigidity collision to the damage risk of panel, slows down the translation rate, avoids rigid collision, protection product that can be better. The first lateral positioning unit 22 is driven by a cylinder to provide a reference position for the lateral position of the plate, and then is driven by a servo motor of the second lateral positioning unit 23 to push the plate laterally to lean against the second stop rod 223, so that the left and right sides of the plate are positioned. The pre-positioning device 2 is used for positioning the side edge of the plate, and the positioning precision of the pre-positioning device cannot meet the requirement, so that the plate needs to be further precisely positioned by the precise positioning device 3. The second lateral positioning unit 23 is driven by a servo motor, so that the PCB plates with different specifications and sizes can be met, and the universality is improved.

The first stop lever 213, the second stop lever 223 and the third stop lever 233 all extend through the top of the conveyor 1 to above the conveyor 1.

The fine positioning device 3 comprises two hole positioning units 31 which are oppositely arranged, the two hole positioning units 31 are respectively used for searching positioning holes corresponding to two sides of the PCB, inserting positioning pins into the corresponding positioning holes, and then moving the whole PCB to a set position to realize accurate positioning.

The hole positioning unit 31 includes a third motor 311, a fourth support plate 312 driven by the third motor 311 to move back and forth, a fourth motor 313 fixed to the fourth support plate 312, a fifth support plate 314 driven by the fourth motor 313 to move left and right, a second cylinder 315 fixed to the fifth support plate 314, a first positioning pin 316 driven by the second cylinder 315 to move up and down, and a first CCD camera 317 fixed to the fifth support plate 314 and located directly above the first positioning pin 316.

The fourth supporting plate 312 is movably disposed on the pair of first sliding rails 318 through a slider. The two hole positioning units 31 share the same pair of first slide rails 318. A light source plate 319 is further disposed on the fifth support plate 314 below the first CCD camera 317, and the first positioning pin 316 penetrates through the light source plate 319.

Of the two hole positioning units 31, one of the hole positioning units 31 has a longer movement stroke in the front-rear direction than the other hole positioning unit 31. The hole positioning unit 31 with long movement stroke can be used for accurate positioning of PCB boards with different specifications and sizes, automatic adjustment and adaptation are realized, and the universality is improved.

The support platform 4 is made up of a number of support columns distributed along the peripheral edges of the sheet.

The PIN printing device 5 comprises two PIN printing units 51 which are oppositely arranged, wherein one PIN printing unit 51 is fixedly arranged, and the other PIN printing unit 51 is movably arranged on an X-axis driving module 52. The automatic PIN printing operation of the PCB with different specifications and sizes can be suitable through the arrangement of the two PIN printing units 51.

The PIN printing unit 51 comprises a sixth supporting plate 511, a third air cylinder 512 fixed on the sixth supporting plate 511, a PIN printing thimble 513 driven by the third air cylinder 512 to move up and down, a PIN feeding module 514 and a PIN feeding module 515 fixed on the sixth supporting plate 511, and a PIN feeding module 518 for supplying PINs to the PIN feeding module 514.

The PIN needle feeding module 515 comprises a fourth air cylinder 5151 and a PIN needle feeding nozzle 5152 which is driven by the fourth air cylinder 5151 to move horizontally. The PIN feeding nozzle 5152 is driven by the fourth cylinder 5151 to switch the position between the set position and the position above the PCB positioning hole.

The PIN needle feeding module 514 includes a fifth cylinder 5141, a staggered distributing block 5142 driven by the fifth cylinder 5141 to move horizontally, a first material receiving nozzle 5143 located above the staggered distributing block 5142, and a second material receiving nozzle 5144 located below the staggered distributing block 5142, wherein the first material receiving nozzle 5143 and the second material receiving nozzle 5144 are arranged in a staggered manner, and a material distributing channel (not shown in the figure) is provided in the staggered distributing block 5142 and is butted with the first material receiving nozzle 5143 at a first position and butted with the second material receiving nozzle 5144 at a second position. The offset distributor block 5142 is driven by the fifth cylinder 5141 to switch between the first position and the second position.

The second material receiving nozzle 5144 is communicated with the PIN needle feeding nozzle 5152 through a hose. The PIN feeding module 518 is of a vibrating disk structure, and the output end of the PIN feeding module is communicated with the first material receiving nozzle 5143 through a hose.

The pinning unit 51 also includes a guide compression module 516. The guiding and pressing module 516 comprises a sixth air cylinder 5161, a seventh support plate 5162 driven by the sixth air cylinder 5161 to move up and down, a positioning pressure head 5163 fixed below the seventh support plate 5162 and used for pressing the PCB, and a guide seat 5164 fixed on the seventh support plate 5162, wherein a guiding through hole (not shown in the figure) for the PIN striking thimble 513 to pass through and corresponding to the position of the positioning hole on the PCB is arranged on the guide seat 5164. Compress tightly module 516 through the direction, can compress tightly the PCB board from the top through location pressure head 5163 and guide holder 5164 on the one hand, on the other hand can lead to beating PIN thimble 513 through guide holder 5164, and the guarantee is beaten PIN thimble 513 and can be smoothly accurate squeeze into the PCB board locating hole with the PIN needle.

In this embodiment, the PIN feeding nozzle 5152 is driven by the fourth cylinder 5151 to move above the guide seat 5164, and is abutted against the guide through hole to feed the PIN into the guide through hole.

The PIN printing unit 51 further includes a positioning and supporting module 517 for positioning and supporting the PCB. The positioning and supporting module 517 comprises a supporting block 5171 for supporting the PCB, a seventh air cylinder 5172 located below the supporting block 5171, and a second positioning thimble 5173 driven by the seventh air cylinder 5172 to move up and down, wherein the second positioning thimble 5173 is inserted into the PIN hole of the PCB by the seventh air cylinder 5172 upwards passing through the supporting block 5171 to position the PCB.

The sixth support plate 511 is also provided with a second CCD camera 519 for checking the PIN-in condition.

The X-axis driving module 52 includes a sixth motor (not shown), a lead screw driven by the sixth motor to rotate, and a pair of second slide rails located at two sides of the lead screw, and the sixth supporting plate 511 is movably disposed on the second slide rails through a slider and is connected to the lead screw through a nut sleeve to realize transmission. The distance between the two PIN printing units 51 can be adjusted through the X-axis driving module 52, so that the PCB is suitable for PCBs with various specifications and sizes, and the universality is improved.

The first conveying device 6 has the same structure as the second conveying device 7, and includes a fifth motor 61, an eighth support plate 62 driven by the fifth motor 61 to move left and right, and an eighth cylinder (not shown) fixed on the eighth support plate 62 and driven by the eighth cylinder to move up and down, and an adsorption module 63. In this embodiment, the first carrying device 6 and the second carrying device 7 adopt two independent driving modules to realize the left-right and up-down movement, and in other embodiments, the first carrying device and the second carrying device can also share one fifth motor to realize the left-right movement, and then adopt two independent eighth cylinders to realize the up-down movement.

And the middle part of the supporting platform 4 is provided with a jacking output device 8 for conveying the PCB subjected to PIN printing. The jack-up output device 8 includes a ninth cylinder 81, a support frame 82 driven by the ninth cylinder 81 to move up and down, and a conveying unit 83 provided on the support frame 82.

The working principle of the high-precision high-efficiency full-automatic PIN printing mechanism 100 for the PCB of the embodiment is as follows: the PCB enters the position of the pre-positioning device 2 through the conveying device 1, and after a sensor on the pre-positioning device 2 senses that a product is in place, a first stop lever 213 in the front positioning unit 21 moves in place to limit the edge of the front position of the PCB; then, the corresponding stop levers in the first lateral positioning unit 22 and the second lateral positioning unit 23 are mutually closed to a set position, and the edge positions of the left side and the right side of the PCB are limited; after pre-positioning, the PCB is conveyed to the position of the fine positioning device 3 through the first conveying device 6; the fine positioning device 3 acquires the position of a positioning hole on the PCB through a first CCD camera 317 positioned above the left side and the right side of the PCB, then drives a first positioning thimble 316 to move below the positioning hole by using an independent horizontal transfer driving module, drives the first positioning thimble 316 to extend out through a second air cylinder 315, and then moves the PCB to a set position to realize the accurate positioning of the PCB; then, the PCB after fine positioning is conveyed and placed on the supporting platform 4 through a second conveying device 7; a second positioning thimble 5173 in the PIN printing device 5 extends out, a PIN hole of the PCB falls on the second positioning thimble 5173, and a plurality of layers of plates can be stacked according to the required number; a seventh supporting plate 5162 in the guiding and pressing module 516 extends out, and the positioning pressure head 5163 and the guiding seat 5164 press the PCB; the PIN needles are arranged and output to a first material receiving nozzle 5143 through a PIN needle feeding module 518, and then are received by a dislocation distributing block 5142 at a time and sent to a PIN needle feeding nozzle 5152 of a PIN needle feeding module 515; when the PIN needle feeding nozzle 5152 moves above the guide seat 5164 to align with the guide through hole, the PIN needle falls into the guide seat 5164; then the PIN needle feeding nozzle 5152 is withdrawn, a PIN thimble 513 is punched to descend to press the PIN needle into the PIN pinhole, and the multilayer plates are stacked together to form an integral structure; finally, the PIN needle driving condition is checked through the second CCD camera 519, and whether the PIN needle is driven completely is checked; then the guiding and pressing module 516 and the PIN hitting thimble 513 ascend and yield; the conveying unit 83 in the jacking output device 8 ascends to jack up the laminated plate and then conveys the laminated plate out, so that the multilayer plate is fed.

According to the high-precision high-efficiency full-automatic PIN printing mechanism 100 for the PCB, through the design of the pre-positioning device, the fine positioning device and the PIN printing device, and the matching of the conveying and carrying mechanism, the automatic overlapping PIN printing operation of the PCB is realized, the laminated feeding of multiple layers of PCBs is realized, and the feeding efficiency of the production line type production of the PCBs is greatly improved; the position precision of the PCB during lamination is guaranteed through the pre-positioning device and the fine positioning device, and the PIN needle can be smoothly and accurately driven into the PCB; the phenomenon that the board is damaged due to inaccurate positioning when the PIN is printed on the PCB is effectively reduced.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a full-automatic PIN mechanism of beating of high-efficient PCB board of high accuracy which characterized in that: the device comprises a conveying device, a pre-positioning device and a fine positioning device which are positioned below the conveying device and used for positioning a plate on the conveying device, a supporting platform arranged at the tail end of the conveying device, PIN printing devices arranged on two sides of the supporting platform, a first carrying device used for carrying the plate from the pre-positioning device to the fine positioning device, and a second carrying device used for carrying the plate from the fine positioning device to the supporting platform; the pre-positioning device and the fine positioning device are arranged along the conveying device.

2. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 1, is characterized in that: the pre-positioning device comprises a front positioning unit for blocking the advancing direction of the plate on the conveying device, a first side positioning unit for limiting the position of one side edge of the plate and a second side positioning unit for limiting the position of the other side edge of the plate;

the front positioning unit comprises a first motor, a first supporting plate driven by the first motor to move left and right, and a plurality of first stop levers arranged on the first supporting plate at intervals; the first lateral positioning unit comprises a first air cylinder, a second supporting plate driven by the first air cylinder to move back and forth, and a plurality of second stop levers arranged on the second supporting plate at intervals; the second lateral positioning unit comprises a second motor, a third supporting plate driven by the second motor to move back and forth, and a plurality of third stop levers arranged on the third supporting plate at intervals.

3. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 1, is characterized in that: the fine positioning device comprises two hole positioning units which are oppositely arranged; the hole positioning unit comprises a third motor, a fourth supporting plate driven by the third motor to move back and forth, a fourth motor fixed on the fourth supporting plate, a fifth supporting plate driven by the fourth motor to move left and right, a second air cylinder fixed on the fifth supporting plate, a first positioning thimble driven by the second air cylinder to move up and down, and a first CCD camera fixed on the fifth supporting plate and positioned right above the first positioning thimble.

4. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 1, is characterized in that: the PIN punching device comprises two opposite PIN punching units, each PIN punching unit comprises a positioning support module for positioning and supporting a PCB, a guide pressing module located above the positioning support module, a PIN needle pressing module located above the guide pressing module, and a PIN needle feeding module for feeding the PIN needles into the guide pressing module.

5. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 4, wherein: among the two PIN printing units, one PIN printing unit is fixedly arranged, and the other PIN printing unit is movably arranged on an X-axis driving module.

6. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 4, wherein: the positioning and supporting module comprises a supporting block for supporting the PCB, a seventh air cylinder located below the supporting block and a second positioning thimble driven by the seventh air cylinder to move up and down, and the second positioning thimble is driven by the seventh air cylinder to upwards penetrate through the supporting block and be inserted into a PIN pinhole of the PCB to position the PCB.

7. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 4, wherein: the guide pressing module comprises a sixth air cylinder, a seventh supporting plate driven by the sixth air cylinder to move up and down, a positioning pressing head fixed below the seventh supporting plate and used for pressing the PCB, and a guide seat fixed on the seventh supporting plate.

8. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 7, wherein: the PIN needle pressing module comprises a third air cylinder and a PIN striking needle driven by the third air cylinder to move up and down; the guide seat is provided with a guide through hole; the PIN punching thimble is driven by the third cylinder to penetrate through the guide through hole.

9. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 8, wherein: the PIN needle feeding module comprises a PIN needle feeding module, a PIN needle feeding module and a PIN needle feeding module for supplying PIN needles to the PIN needle feeding module;

the PIN needle feeding module comprises a fourth cylinder and a PIN needle feeding nozzle which is driven by the fourth cylinder to move horizontally;

the PIN needle feeding module comprises a fifth air cylinder, a staggered distributing block driven by the fifth air cylinder to move horizontally, a first material receiving nozzle positioned above the staggered distributing block and a second material receiving nozzle positioned below the staggered distributing block, wherein the first material receiving nozzle and the second material receiving nozzle are arranged in a staggered mode, and a distributing pore passage which is butted with the first material receiving nozzle at a first position and is butted with the second material receiving nozzle at a second position is formed in the staggered distributing block; the staggered distributing block is driven by the fifth air cylinder to switch between the first position and the second position;

the second material receiving nozzle is communicated with the PIN needle feeding nozzle through a hose; the output end of the PIN needle feeding module is communicated with the first material receiving nozzle through a hose;

the PIN needle feeding nozzle is driven by the fourth cylinder to move to the position above the guide seat, is in butt joint with the guide through hole, and sends the PIN needle into the guide through hole.

10. The full-automatic PIN hitting mechanism for the high-precision and high-efficiency PCB as recited in claim 4, wherein: the PIN printing unit further comprises a second CCD camera for checking the PIN needle printing condition.

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