CN219999706U

CN219999706U - Anti-offset FPC hot-pressing positioning device

Info

Publication number: CN219999706U
Application number: CN202321255090.XU
Authority: CN
Inventors: 黄称祥; 刘智; 李棠; 郭永昌; 樊光辉; 徐福林
Original assignee: Jiangxi Redboard Technology Co Ltd
Current assignee: Jiangxi Redboard Technology Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-11-10
Anticipated expiration: 2033-05-23

Abstract

The utility model provides an anti-offset FPC hot pressing positioner, it includes plummer, PCB locating station, FPC locating station, pressfitting frame, hot pressing subassembly and control system, PCB locating station, FPC locating station and pressfitting frame all install on the plummer, hot pressing subassembly installs on the pressfitting frame and is located the top of PCB locating station, control system and other each subassembly signal connection respectively; the PCB positioning table comprises a first lifting air rod, a base and a limiting sliding plate, wherein a first lifting groove is formed in the bearing table, the first lifting air rod is clamped in the first lifting groove and can be lifted movably, the base is fixedly arranged at the upper end of the first lifting air rod, the base is further provided with a limiting sliding groove, and the limiting sliding plate is clamped in the limiting sliding groove and can slide along the limiting sliding groove. According to the utility model, the limit sliding plate and the negative pressure suction hole are respectively designed on the PCB positioning table and the FPC positioning table, so that the problem of offset and dislocation in the hot pressing process is greatly avoided; the utility model has strong practicability and has stronger popularization significance.

Description

Anti-offset FPC hot-pressing positioning device

Technical Field

The utility model relates to a circuit board processing device, in particular to an anti-offset FPC hot-pressing positioning device.

Background

FPC also known as flexible circuit board adopts hot-pressing technique to connect between FPC and the PCB board generally, and when carrying out hot-pressing, generally need use tool and hot-pressing tool to mutually support just can realize the accurate location of relative high efficiency. The existing device for hot-press welding is generally to form a PCB positioning groove and an FPC positioning groove in the same jig board, firstly place the PCB in the PCB positioning groove when in use, then place the FPC in the FPC positioning groove, manually inspect whether the pre-welding part of the FPC is aligned with the corresponding bonding pad position of the PCB, after confirming alignment, the hot-press equipment starts to work, the pre-welding part of the FPC is pressed on the bonding pad of the PCB, and tin materials on the bonding pad are melted to form bonding with the pre-welding part of the FPC.

In the hot-press welding process, the dislocation of the pre-welding part of the FPC and the bonding pad of the PCB often occurs, so that the defective rate of the hot-press welding is higher, and the reason for the phenomenon mainly comprises the following two points: firstly, in order to facilitate placement, the size of a PCB positioning groove is usually slightly larger than the actual size of the PCB, the PCB is not completely clamped in the PCB positioning groove, and the PCB is slightly displaced in the PCB positioning groove in the hot pressing process, so that the problem of offset dislocation is finally generated; secondly, the upper pressing plate and the lower pressing plate are not parallel, so that the FPC is driven to slide on a bonding pad of the PCB in a non-perceptible manner in the hot pressing process, the sliding direction is uncertain, and finally the offset dislocation problem is generated.

Disclosure of Invention

Based on this, it is necessary to provide an anti-offset FPC thermo-compression positioning device against the shortcomings in the prior art.

The utility model provides an anti-offset FPC hot pressing positioner, includes plummer, PCB locating station, FPC locating station, pressfitting frame, hot pressing subassembly and control system, PCB locating station, FPC locating station and pressfitting frame are all installed on the plummer, hot pressing subassembly installs on the pressfitting frame and is located the top of PCB locating station, control system and other each subassembly signal connection respectively. The PCB positioning table comprises a first lifting air rod, a base and a limiting sliding plate, wherein a first lifting groove is formed in the bearing table, the first lifting air rod is clamped in the first lifting groove and can be lifted movably, the base is fixedly arranged at the upper end of the first lifting air rod, the base is further provided with a limiting sliding groove, and the limiting sliding plate is clamped in the limiting sliding groove and can slide along the limiting sliding groove.

Further, the PCB positioning table also comprises a first parallel detection assembly, wherein the first parallel detection assembly comprises a plurality of groups of electric contact pieces and a telescopic polar needle row. The electric contact pieces are fixedly arranged at the bottom of the base and are arranged in a radial mode, and the bottoms of the electric contact pieces are also inclined. The bearing table is provided with a plurality of electric contact grooves, and a plurality of telescopic polar pin rows are respectively clamped in the electric contact grooves and vertically correspond to the electric contact pieces. The telescopic electrode needle bar comprises a telescopic sleeve and a plurality of electric contact pins arranged on the telescopic sleeve, the heights of the top ends of the electric contact pins are consistent, and the electric contact pins can elastically stretch and retract on the telescopic sleeve.

Further, the FPC locating table is provided with an FPC locating slot, and a plurality of negative pressure suction holes are further formed in the FPC locating slot.

Further, the pressing frame comprises a supporting plate and a plurality of second lifting air rods, the second lifting air rods are respectively erected on the bearing table, and the supporting plate is fixedly arranged at the top ends of the second lifting air rods and can be lifted movably. The hot pressing assembly is clamped in the adjusting slide rail and can slide along the adjusting slide rail.

Further, the pressing frame further comprises a second parallel detection assembly, the second parallel detection assembly comprises a plurality of laser ranging transmitters and laser ranging receivers, the laser ranging transmitters are arranged at four corners of the bottom of the supporting plate along the vertical downward direction, and the laser ranging receivers are correspondingly arranged at four corners of the bearing table.

Further, the hot pressing assembly comprises an adjusting plate, a fixing plate, a pressing plate and a plurality of third lifting air bars. The adjusting plate is clamped in the adjusting slide rail, a plurality of third lifting air rods are fixedly arranged on the adjusting plate, the fixing plate is fixedly arranged at the bottom ends of the third lifting air rods, and the pressing plate is movably arranged at the bottom of the fixing plate.

In summary, the anti-offset FPC hot-pressing positioning device has the beneficial effects that: through respectively designing a limit sliding plate and a negative pressure suction hole on the PCB positioning table and the FPC positioning table, the PCB and the FPC can be well fixed, and the problem of offset dislocation in the hot pressing process is greatly avoided; the PCB positioning table and the pressing frame are respectively provided with a first parallel detection assembly and a second parallel detection assembly, so that the PCB positioning table and the hot pressing assembly can be ensured to be always pressed in parallel, and the problem of offset dislocation in the hot pressing process is further avoided; the utility model has strong practicability and has stronger popularization significance.

Drawings

FIG. 1 is a schematic diagram of a hot pressing positioning device for an FPC with an anti-offset function;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of the PCB positioning table of FIG. 2;

FIG. 4 is a schematic view of an exploded structure of the electrical contact and the retractable pin row of FIG. 3;

FIG. 5 is an exploded view of the press frame of FIG. 2;

fig. 6 is an exploded view of the hot-pressing assembly of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 6, the present utility model provides an anti-offset FPC thermo-compression positioning device 100, which comprises a carrier 10, a PCB positioning table 20, an FPC positioning table 30, a pressing frame 40, a thermo-compression assembly 50 and a control system (not shown), wherein the PCB positioning table 20, the FPC positioning table 30 and the pressing frame 40 are all mounted on the carrier 10, the thermo-compression assembly 50 is mounted on the pressing frame 40 and is located above the PCB positioning table 20, and the control system is respectively connected with other components through signals.

The PCB positioning table 20 comprises a first lifting air rod 21, a base 22 and a limiting sliding plate 23, wherein the bearing table 10 is provided with a first lifting groove 11, the first lifting air rod 21 is clamped in the first lifting groove 11 and can be lifted movably, the base 22 is fixedly arranged at the upper end of the first lifting air rod 21, the base 22 is further provided with a limiting sliding groove 221, and the limiting sliding plate 23 is clamped in the limiting sliding groove 221 and can slide along the limiting sliding groove 221. The first lifting air rod 21 can drive the base 22 to lift movably, so that the height difference between the base 22 and the FPC positioning table 30 is adjusted, and PCBs with different thicknesses can be stacked on the base 22 to be welded with the FPC in a hot-pressing mode. And the limit sliding plate 23 clamps and fixes the PCB through sliding left and right, so that the problem of offset dislocation caused by sliding of the PCB in the hot pressing process can be greatly avoided.

The PCB positioning stage 20 further includes a first parallel detecting assembly 24, and the first parallel detecting assembly 24 includes a plurality of sets of electrical contacts 241 and a plurality of retractable electrode pin rows 242. The electric contacts 241 are fixedly mounted at the bottom of the base 22 and are radially arranged, and the bottoms of the electric contacts 241 are inclined. The carrying platform 10 is provided with a plurality of electric contact grooves 12, and a plurality of telescopic polar rows 242 are respectively clamped in the electric contact grooves 12 and vertically correspond to the electric contact pieces 241. The telescopic electrode needle bar 242 comprises a telescopic sleeve 242a and a plurality of electric contact pins 242b arranged on the telescopic sleeve 242a, the top ends of the electric contact pins 242b are uniform in height, and the electric contact pins 242b can elastically stretch and retract on the telescopic sleeve 242 a.

The electrical contact 241 of the first parallel detecting component 24 is driven by the PCB positioning table 20 to move up and down, so as to gradually engage in the electrical contact groove 12. Since the telescopic electrode pin row 242 is embedded in the electric contact groove 12, the bottom of the inclined electric contact 241 is gradually abutted against each electric contact pin 242b for power supply. If the number of electrical contact pins 242b in each electrical contact slot 12 in the energized state is the same, it is indicated that the base 22 is parallel to the carrier 10, otherwise, it is indicated that the base 22 is tilted.

The FPC locating table 30 is provided with an FPC locating slot 31, and a plurality of negative pressure suction holes 32 are further arranged in the FPC locating slot 31. The negative pressure suction hole 32 can adsorb and fix the FPC embedded in the groove, so that the negative pressure suction hole is firmly attached to the bottom of the FPC positioning groove 31, and the problem of offset dislocation caused by FPC sliding in the hot pressing process can be prevented to a certain extent.

The pressing frame 40 includes a supporting plate 41 and a plurality of second lifting air bars 42, the second lifting air bars 42 are respectively erected on the bearing table 10, and the supporting plate 41 is fixedly mounted at the top ends of the second lifting air bars 42 and can be lifted and lowered. The supporting plate 41 is further provided with an adjusting through hole 411 penetrating up and down, two sides of the adjusting through hole 411 are provided with adjusting slide rails 412, and the hot pressing assembly 50 is clamped in the adjusting slide rails 412 and can slide along the adjusting slide rails 412. The second lifting air rod 42 can adjust the height of the supporting plate 41 so as to properly adjust the distance between the hot pressing assembly 50 and the base 22, so that different pressing forces are adopted according to different hot pressing welding requirements, and the influence of excessive or insufficient pressure on the hot pressing effect is avoided.

The press-fit frame 40 further includes a second parallel detection assembly 43, the second parallel detection assembly 43 includes a plurality of laser ranging transmitters 431 and laser ranging receivers 432, the plurality of laser ranging transmitters 431 are disposed at four corners of the bottom of the support plate 41 along the vertical downward direction, and the plurality of laser ranging receivers 432 are correspondingly disposed at four corners of the carrying platform 10. The laser ranging transmitters 431 and the laser ranging receivers 432 in the second parallel detection assembly 43 cooperate with each other to measure the distances between the four corners of the supporting plate 41 and the carrying table 10, if the distances are equal, the supporting plate 41 is parallel to the carrying plate, otherwise, the supporting plate 41 is inclined.

The hot pressing assembly 50 comprises an adjusting plate 51, a fixing plate 52, a pressing plate 53 and a plurality of third lifting air bars 54. The adjusting plate 51 is clamped in the adjusting slide rail 412, a plurality of third lifting air rods 54 are fixedly arranged on the adjusting plate 51, the fixing plate 52 is fixedly arranged at the bottom ends of the third lifting air rods 54, and the pressing plate 53 is movably arranged at the bottom of the fixing plate 52. The slidable adjusting plate 51 and the movable detachable pressing plate 53 on the hot-pressing assembly 50 are more convenient for hot-pressing welding of the PCBs and FPCs with different sizes and different pad positions.

When the utility model works, firstly, the press-fit plates 53 with different specifications are selected according to PCBs with different thicknesses and sizes, and the height of the supporting plate 41 and the distance between the two limiting sliding plates 23 are adjusted. Then, it is determined whether the PCB positioning stage 20 and the thermo-compression assembly 50 are parallel to the carrier stage 10 according to the detection data of the first parallel detection assembly 24 and the second parallel detection assembly 43, and if not, the first lift air bar 21 or the second lift air bar 42 is controlled to be adjusted to be parallel. And then placing the PCB and the FPC to be soldered on the PCB positioning table 20 and the FPC positioning table 30 respectively to finish pad alignment and fixing. And finally, starting the third lifting cylinder to drive the pressing plate 53 to press down so as to weld the PCB and the FPC into a whole.

In summary, the anti-offset FPC hot pressing positioning device 100 of the present utility model has the following advantages: through respectively designing the limit sliding plate 23 and the negative pressure suction hole 32 on the PCB positioning table 20 and the FPC positioning table 30, the PCB and the FPC can be well fixed, and the problem of offset dislocation in the hot pressing process is greatly avoided; the first parallel detection assembly 24 and the second parallel detection assembly 43 are respectively designed on the PCB positioning table 20 and the pressing frame 40, so that the PCB positioning table 20 and the hot pressing assembly 50 can be ensured to be always pressed in parallel, and the problem of offset dislocation in the hot pressing process is further avoided; the utility model has strong practicability and has stronger popularization significance.

The above examples illustrate only one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the utility model. It should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.

Claims

1. An anti-offset FPC hot pressing positioner, its characterized in that: the PCB positioning table, the FPC positioning table and the pressing frame are arranged on the bearing table, the hot pressing assembly is arranged on the pressing frame and is positioned above the PCB positioning table, and the control system is in signal connection with other assemblies respectively; the PCB positioning table comprises a first lifting air rod, a base and a limiting sliding plate, wherein a first lifting groove is formed in the bearing table, the first lifting air rod is clamped in the first lifting groove and can be lifted movably, the base is fixedly arranged at the upper end of the first lifting air rod, the base is further provided with a limiting sliding groove, and the limiting sliding plate is clamped in the limiting sliding groove and can slide along the limiting sliding groove.

2. The offset-resistant FPC thermo-compression positioning device according to claim 1, wherein: the PCB positioning table also comprises a first parallel detection assembly, wherein the first parallel detection assembly comprises a plurality of groups of electric contact pieces and a telescopic polar needle row; the plurality of groups of electric contact pieces are fixedly arranged at the bottom of the base and are radially arranged, and the bottoms of the electric contact pieces are also inclined; the bearing table is provided with a plurality of electric contact grooves, and a plurality of telescopic polar pin rows are respectively clamped in the electric contact grooves and correspond to the electric contact pieces up and down; the telescopic electrode needle bar comprises a telescopic sleeve and a plurality of electric contact pins arranged on the telescopic sleeve, the heights of the top ends of the electric contact pins are consistent, and the electric contact pins can elastically stretch and retract on the telescopic sleeve.

3. The offset-resistant FPC thermo-compression positioning device according to claim 1, wherein: the FPC locating table is provided with an FPC locating slot, and a plurality of negative pressure suction holes are further formed in the FPC locating slot.

4. The offset-resistant FPC thermo-compression positioning device according to claim 1, wherein: the pressing frame comprises a supporting plate and a plurality of second lifting air rods, the second lifting air rods are respectively erected on the bearing table, and the supporting plate is fixedly arranged at the top ends of the second lifting air rods and can be lifted and lowered movably; the hot pressing assembly is clamped in the adjusting slide rail and can slide along the adjusting slide rail.

5. The offset-resistant FPC thermo-compression positioning device according to claim 4, wherein: the pressing frame further comprises a second parallel detection assembly, the second parallel detection assembly comprises a plurality of laser ranging transmitters and laser ranging receivers, the laser ranging transmitters are arranged at four corners of the bottom of the supporting plate along the vertical downward direction, and the laser ranging receivers are correspondingly arranged at four corners of the bearing table.

6. The offset-resistant FPC thermo-compression positioning device according to claim 4, wherein: the hot pressing assembly comprises an adjusting plate, a fixed plate, a pressing plate and a plurality of third lifting air bars; the adjusting plate is clamped in the adjusting slide rail, a plurality of third lifting air rods are fixedly arranged on the adjusting plate, the fixing plate is fixedly arranged at the bottom ends of the third lifting air rods, and the pressing plate is movably arranged at the bottom of the fixing plate.