Copper-plating-free production process of double-sided transparent FPC (Flexible Printed Circuit)

Abstract

The invention discloses a copper plating-free production process for a double-sided transparent FPC (Flexible Printed Circuit), and relates to the field of FPC production, comprising a bottom plate, side plates symmetrically arranged at the top of the bottom plate, a clamping unit fixedly connected to the tops of the side plates, a tapping unit fixedly connected to the bottoms of the side plates, and a mechanical arm unit fixedly connected to the top of the bottom plate. An FPC original board is placed in the clamping unit to be fixed, then the hole opening unit carries out a hole blackening process on the original board, and then the mechanical arm unit carries out cleaning after hole opening and an activated palladium injection process on the original board, so that chemical nickel and chemical gold are deposited and attached to hole walls to form in-hole metallization, and lines on the two sides of a through hole are connected and conducted. And a copper plating production process is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of FPC production, in particular to a production process of a double-sided transparent FPC without copper plating. Background Art

[0002] FPC, or flexible printed circuit board, is a highly flexible printed circuit board. It is based on a thin substrate and is made through precision printing and etching processes. FPC can be bent, folded, and even twisted to adapt to various complex space requirements. It is widely used in consumer electronics such as smartphones, tablets, wearable devices, as well as automotive electronics, medical electronics and other fields. It has the characteristics of high-density wiring, good heat dissipation performance and reliable electrical connection, providing key technical support for the miniaturization, thinness and multi-functionality of modern electronic devices.

[0003] All the current FPC double-sided product production processes in the industry need to go through the black hole / electroplating copper process after drilling to metallize the hole, so that the circuits in the post-processing process are formed, and the circuits on both sides are connected and conductive through the metallization in the hole, but this production process has a high production cost. Summary of the invention

[0004] In view of the shortcomings of the prior art, the technical solution adopted by the present invention to solve the technical problems is as follows: a production process of a double-sided transparent FPC without copper plating described in the present invention comprises a bottom plate, a side plate is symmetrically arranged on the top of the bottom plate, a clamping unit is fixedly connected to the top of the side plate, a hole opening unit is fixedly connected to the bottom of the side plate, and a mechanical arm unit is fixedly connected to the top of the bottom plate;

[0005] The hole opening unit comprises a servo motor 2, the output end of the servo motor 2 is fixedly connected to a lead screw, the bottom opposite surface of the side plate is fixedly connected to a guide rod, the outer surface of the lead screw is threadedly connected to a sliding plate 1, the inner wall of the sliding plate 1 is slidably connected to the outer surface of the guide rod, the top of the sliding plate 1 is fixedly connected to a transverse movement device, and the outer surface of the transverse movement device is provided with a hole opening mechanism;

[0006] The hole opening mechanism includes a sliding plate 2, a telescopic rod is fixedly connected to the top of the sliding plate 2, a servo motor 3 is fixedly connected to the top of the telescopic rod, a drill unit is fixedly connected to the output end of the servo motor 3, and a cleaning mechanism is fixedly connected to the outer surface of the telescopic rod.

[0007] Preferably, the outer surface of the second servo motor is fixedly connected to the bottom of the side plate, and the inner wall of the second sliding plate is slidably connected to the outer surface of the transverse movement device.

[0008] Preferably, the drill unit mechanism includes an air bin, a drill bit is fixedly connected to the top of the air bin, a ventilation groove is arranged on the drill bit, a ventilation hole is arranged on the end of the drill bit close to the air bin, an inner plate is slidably connected to the inner wall of the air bin, support rods are symmetrically arranged at both ends of the inner plate, a magnetic block is fixedly connected to the end away from the inner plate, and a compression plate is fixedly connected to the top of the inner plate.

[0009] Preferably, the bottom of the air bin is fixedly connected to the output end of servo motor three.

[0010] Preferably, the cleaning mechanism includes two support rods, the top of the two support rods is fixedly connected to a slide plate, the end of the two support rods close to the arc plate is fixedly connected to two magnetic blocks, the outer surface of the arc plate is provided with an insertion groove, an insertion column is clamped in the insertion groove, and a sponge block is provided at one end of the insertion column.

[0011] Preferably, the bottom of the second support rod is fixedly connected to the outer surface of the telescopic rod, and the second magnetic block and the first magnetic block attract each other.

[0012] Preferably, the robotic arm unit includes a triangle plate, the top of which is fixedly connected to a robotic arm, an end of the robotic arm away from the triangle plate is fixedly connected to an engraving device, an inner wall of the engraving device is fixedly connected to a carving knife, an outer surface of the engraving device is fixedly connected to a support plate, brushes are evenly arranged on the outer surface of the support plate, and an injection mechanism is fixedly connected to a side of the engraving device away from the carving knife.

[0013] Preferably, the injection mechanism includes a storage bin, the outer surface of the storage bin is fixedly connected to a spraying device, the output end of the spraying device is fixedly connected to a nozzle, the outer surface of the spraying device is fixedly connected to an electromagnetic plate 1, the outer surface of the electromagnetic plate 1 is fixedly connected to a threaded rod, the end of the threaded rod away from the electromagnetic plate 1 is fixedly connected to an electromagnetic plate 2, the outer surface of the threaded rod is threadedly connected to a circular magnetic plate, and the outer surface of the circular magnetic plate is evenly provided with two brushes.

[0014] Preferably, the bottom of the triangle plate is fixedly connected to the top of the base plate, and the outer surface of the storage bin is fixedly connected to the outer surface of the engraving device.

[0015] Preferably, the clamping unit includes a servo motor 1, the outer surface of the servo motor 1 is fixedly connected to the top of the side plate, the output end of the servo motor 1 is fixedly connected to a rotating shaft, the end of the rotating shaft far away from the servo motor 1 is fixedly connected to a rotating plate, the inner wall of the rotating plate is evenly provided with hydraulic pressures, and the FPC original board is placed on the top of the hydraulic pressures.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention sets a drill unit. When the FPC original board on the clamping unit is in a horizontal state, the FPC original board will be drilled. The servo motor 2 at the bottom will drive the screw to rotate, and then drive the sliding plate to move along the guide rod. At the same time, the lateral movement device will move the hole-opening mechanism to a specific position. Then the telescopic rod will drive the servo motor and the drill unit to move upward. At the same time, the servo motor 3 will drive the air bin and the drill to rotate, and then the FPC original board will be drilled. As the air bin moves upward, the distance between the magnetic block 2 and the magnetic block 1 will become closer and closer, so that the magnetic force of mutual attraction will become greater, so that the inner plate and the compression plate will move upward, thereby squeezing the air on the top of the air bin and making the air flow out from the ventilation groove and the ventilation hole of the drill, and blowing out the FPC original board debris generated during the drilling, so as to avoid the debris from affecting the subsequent addition of activated palladium to participate in the chemical reaction. At the same time, the use of wind blowing instead of scraping can effectively protect the inner wall carbon conductive layer of the FPC original board from damage.

[0018] 2. The present invention provides a cleaning mechanism. When the telescopic rod drives the drill bit to move upward, the servo motor 3 is also working, so the rotating drill bit will come into contact with the sponge block. The sponge block will remove the dust and impurities attached to the drill bit, thereby preventing the dust and impurities and other small particles from affecting the quality of the hole when drilling.

[0019] 3. The present invention provides an injection mechanism. After the hole is opened, the clamping mechanism will adjust the position of the PFC original plate to facilitate subsequent processes. Then the robotic arm will carve patterns on the PFC original plate and clean the surface with a brush to remove the debris and impurities blown out before. Then the robotic arm will drive the threaded rod to insert into the black hole opened before. The spraying device will squeeze the activated palladium in the storage bin through the nozzle and flow into the black hole. Then the electromagnetic plates 1 and 2 on both sides will be continuously energized, thereby attracting the circular magnetic plate to move up and down. Since the circular magnetic plate will rotate when moving along the threaded rod, it will drive the brush 2 to brush the activated palladium inside, so that the activated palladium is evenly in contact with the carbon conductive layer, avoiding the situation of local excessive thickness or thinness, so that the two can fully undergo a replacement reaction, so that the chemical nickel and chemical gold are deposited on the hole wall to form metallization in the hole, so that the circuits on both sides of the through hole can be interconnected and conductive. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure front of the present invention.

[0021] Figure 2 It is a schematic diagram of the back side of the structure of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the clamping unit of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the opening unit of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the hole opening mechanism of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the drill unit of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the cleaning mechanism of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the mechanical arm unit of the present invention.

[0028] Fig. 9 It is a structural schematic diagram of the injection mechanism of the present invention.

[0029] Fig.10 yes Fig. 9 Enlarged view of point A in the middle.

[0030] In the figure: 1, bottom plate; 2, side plate; 3, clamping unit; 4, hole opening unit; 5, mechanical arm unit; 31, servo motor 1; 32, rotating shaft; 33, rotating plate; 34, hydraulic pressure; 35, FPC original plate; 41, servo motor 2; 42, screw rod; 43, guide rod; 44, sliding plate 1; 45, traverse device; 46, hole opening mechanism; 461, sliding plate 2; 462, telescopic rod; 463, servo motor 3; 464, drill unit; 465, cleaning mechanism; 4641, air chamber; 4642, drill; 4643, ventilation groove; 4644, ventilation hole; 4645, Inner plate; 4646, support rod one; 4647, magnetic block one; 4648, compression plate; 4651, support rod two; 4652, magnetic block two; 4653, arc plate; 4654, insertion slot; 4655, insertion column; 4656, sponge block; 51, triangle plate; 52, mechanical arm; 53, engraving device; 54, engraving knife; 55, support plate; 56, brush; 57, injection mechanism; 571, storage bin; 572, spraying device; 573, nozzle; 574, electromagnetic plate one; 575, threaded rod; 576, circular magnetic plate; 577, brush two; 578, electromagnetic plate two. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0032] Example 1, using Figure 1-Figure 10 The following is a description of a production process of a double-sided transparent FPC without copper plating according to one embodiment of the present invention.

[0033] like Figure 1-Figure 2 As shown, a production process of a double-sided transparent FPC without copper plating of the present invention comprises a bottom plate 1, a side plate 2 is symmetrically arranged on the top of the bottom plate 1, a clamping unit 3 is fixedly connected to the top of the side plate 2, a hole opening unit 4 is fixedly connected to the bottom of the side plate 2, and a mechanical arm unit 5 is fixedly connected to the top of the bottom plate 1;

[0034] When the present invention is working, the FPC original board 35 is first placed into the clamping unit 3 for fixing, and then the hole opening unit 4 will perform a black hole process on the original board. Then the robot arm unit 5 will clean the original board after the hole opening and inject activated palladium to make chemical nickel and chemical gold deposit on the hole wall to form metallization in the hole, so that the circuits on both sides of the through hole can be interconnected and conductive, and there is no need to adopt a copper plating production process.

[0035] like Figure 4 As shown, the hole opening unit 4 includes a servo motor 2 41, the output end of the servo motor 2 41 is fixedly connected to a screw rod 42, the bottom opposite surface of the side plate 2 is fixedly connected to a guide rod 43, the outer surface of the screw rod 42 is threadedly connected to a sliding plate 1 44, the inner wall of the sliding plate 1 44 is slidably connected to the outer surface of the guide rod 43, the top of the sliding plate 1 44 is fixedly connected to a transverse movement device 45, and the outer surface of the transverse movement device 45 is provided with a hole opening mechanism 46;

[0036] When the FPC original board 35 on the clamping unit 3 is in a horizontal state, the drilling process will be performed on the FPC original board 35. The servo motor 41 at the bottom will drive the screw 42 to rotate, and then drive the sliding plate to move along the guide rod 43. At the same time, in conjunction with the transverse movement device 45, the hole opening mechanism 46 will be moved to a specific position.

[0037] like Figure 5As shown, the hole opening mechanism 46 includes a sliding plate 461, the top of the sliding plate 461 is fixedly connected to a telescopic rod 462, the top of the telescopic rod 462 is fixedly connected to a servo motor 463, the output end of the servo motor 463 is fixedly connected to a drill unit 464, and the outer surface of the telescopic rod 462 is fixedly connected to a cleaning mechanism 465.

[0038] Then the telescopic rod 462 will drive the servo motor and the drill unit 464 to move upwards. During the movement of the drill unit 464, the cleaning mechanism 465 will first clean the drill unit 464, and then the drill unit 464 will start drilling.

[0039] The outer surface of the second servo motor 41 is fixedly connected to the bottom of the side plate 2 , and the inner wall of the second sliding plate 461 is slidably connected to the outer surface of the transverse movement device 45 .

[0040] like Figure 6 As shown, the drill unit 464 mechanism includes an air bin 4641, a drill bit 4642 is fixedly connected to the top of the air bin 4641, a ventilation groove 4643 is arranged on the drill bit 4642, a ventilation hole 4644 is arranged at one end of the drill bit 4642 close to the air bin 4641, an inner plate 4645 is slidably connected to the inner wall of the air bin 4641, support rods 4646 are symmetrically arranged at both ends of the inner plate 4645, a magnetic block 4647 is fixedly connected to the end away from the inner plate 4645, and a compression plate 4648 is fixedly connected to the top of the inner plate 4645.

[0041] Servo motor three 463 will drive the air bin 4641 and the drill bit 4642 to rotate, and then make a hole in the FPC original board 35. As the air bin 4641 moves upward, the distance between the second magnetic block 4652 and the first magnetic block 4647 will become closer and closer, so that the magnetic force of mutual attraction will become greater, which will cause the inner plate 4645 and the compression plate 4648 to move upward, thereby squeezing the air on the top of the air bin 4641 and allowing the air to flow out from the ventilation groove 4643 and the ventilation hole 4644 of the drill bit 4642, blowing out the FPC original board 35 debris generated during the drilling, thereby avoiding the debris from affecting the subsequent addition of activated palladium to participate in the chemical reaction, and at the same time, using wind blowing instead of scraping can effectively protect the inner wall carbon conductive layer of the FPC original board 35 from damage.

[0042] The bottom of the air bin 4641 is fixedly connected to the output end of the servo motor three 463 .

[0043] like Figure 7As shown, the cleaning mechanism 465 includes a support rod 4651, the top of which is fixedly connected to a slide plate, an end of the support rod 4651 close to the arc plate 4653 is fixedly connected to a magnetic block 4652, an outer surface of the arc plate 4653 is provided with an insertion groove 4654, an insertion column 4655 is clamped in the insertion groove 4654, and a sponge block 4656 is provided at one end of the insertion column 4655.

[0044] When the telescopic rod 462 drives the drill bit 4642 to move upward, since the servo motor three 463 is also working, the rotating drill bit 4642 will come into contact with the sponge block 4656, and the sponge block 4656 will remove the dust and impurities attached to the drill bit 4642 to avoid these small particles such as dust and impurities affecting the quality of the hole when drilling.

[0045] The bottom of the second support rod 4651 is fixedly connected to the outer surface of the telescopic rod 462, and the second magnetic block 4652 and the first magnetic block 4647 attract each other.

[0046] The specific workflow is as follows:

[0047] During operation, servo motor 2 41 will drive the screw rod 42 to rotate, thereby driving the sliding plate to move along the guide rod 43, and at the same time cooperate with the transverse movement device 45 to move the hole opening mechanism 46 to a specific position. In the process of telescopic rod 462 driving drill bit 4642 to move upward, since servo motor 3 463 is also working, the rotating drill bit 4642 will come into contact with sponge block 4656, and sponge block 4656 will remove dust and impurities attached to drill bit 4642. Then, telescopic rod 462 will drive the servo motor and drill unit 464 to move upward. At the same time, servo motor 3 463 will drive air bin 4641 and drill bit 4642 to rotate, thereby opening a hole in FPC original board 35.

[0048] Embodiment 2, use Figure 1-Figure 10 The following is a description of a production process of a double-sided transparent FPC without copper plating according to one embodiment of the present invention.

[0049] like Figure 8 As shown, a production process of a double-sided transparent FPC of the present invention does not require copper plating. On the basis of Example 1, the robot arm unit 5 includes a triangular plate 51, the top of the triangular plate 51 is fixedly connected to a robot arm 52, the end of the robot arm 52 away from the triangular plate 51 is fixedly connected to an engraving device 53, the inner wall of the engraving device 53 is fixedly connected to a carving knife 54, the outer surface of the engraving device 53 is fixedly connected to a support plate 55, the outer surface of the support plate 55 is evenly provided with brushes 56, and the side of the engraving device 53 away from the carving knife 54 is fixedly connected to an injection mechanism 57.

[0050] After the holes are drilled, the clamping mechanism will adjust the position of the PFC original plate to facilitate subsequent processes. Then the robot arm 52 will carve patterns on the PFC original plate and clean the surface with a brush 56 to remove the debris and impurities blown out previously.

[0051] like Figure 9-10 As shown, the injection mechanism 57 includes a storage bin 571, the outer surface of the storage bin 571 is fixedly connected with a spraying device 572, the output end of the spraying device 572 is fixedly connected with a nozzle 573, the outer surface of the spraying device 572 is fixedly connected with an electromagnetic plate 1 574, the outer surface of the electromagnetic plate 1 574 is fixedly connected with a threaded rod 575, the end of the threaded rod 575 away from the electromagnetic plate 1 574 is fixedly connected with an electromagnetic plate 2 578, the outer surface of the threaded rod 575 is threadedly connected with a circular magnetic plate 576, and the outer surface of the circular magnetic plate 576 is evenly provided with a brush 2 577.

[0052] The robot arm 52 will drive the threaded rod 575 to insert into the black hole opened before, and the spraying device 572 will squeeze the activated palladium in the storage bin 571 through the nozzle 573 and flow into the black hole. After that, the electromagnetic plate 1 574 and the electromagnetic plate 2 578 on both sides will be continuously energized, thereby attracting the circular magnetic plate 576 to move up and down. Since the circular magnetic plate 576 will rotate while moving along the threaded rod 575, it will drive the brush 2 577 to brush the activated palladium inside, so that the activated palladium is evenly contacted with the carbon conductive layer, avoiding the situation of local excessive thickness or thinness, so that the two can fully undergo a replacement reaction, so that the chemical nickel and chemical gold are deposited on the hole wall to form metallization in the hole, so that the circuits on both sides of the through hole can be interconnected and conductive.

[0053] The bottom of the triangular plate 51 is fixedly connected to the top of the bottom plate 1 , and the outer surface of the storage bin 571 is fixedly connected to the outer surface of the engraving device 53 .

[0054] The clamping unit 3 includes a servo motor 31, the outer surface of the servo motor 31 is fixedly connected to the top of the side plate 2, the output end of the servo motor 31 is fixedly connected to a rotating shaft 32, the end of the rotating shaft 32 far away from the servo motor 31 is fixedly connected to a rotating plate 33, the inner wall of the rotating plate 33 is evenly provided with hydraulic presses 34, and an FPC original board 35 is placed on the top of the hydraulic press 34.

[0055] When the clamping unit 3 is working, the staff will first put the FPC original board 35 between the hydraulic press 34 and the rotating plate 33, and the hydraulic press 34 will exert appropriate pressure on the FPC original board 35 to achieve a fixing effect.

[0056] The specific workflow is as follows:

[0057] During operation, after the hole is opened, the clamping mechanism will adjust the position of the PFC original board to facilitate subsequent processes. Then the robot arm 52 will carve patterns on the PFC original board and clean the surface with a brush 56. Then the robot arm 52 will drive the threaded rod 575 to insert into the previously opened black hole. The spraying device 572 will squeeze the activated palladium in the storage bin 571 through the nozzle 573 and flow into the black hole. Then the chemical nickel and chemical gold in the activated palladium are deposited on the hole wall to form metallization in the hole, so that the circuits on both sides of the through hole can be interconnected and conductive.

[0058] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A production process for double-sided transparent FPC without copper plating, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is symmetrically provided with a side plate (2), the top of the side plate (2) is fixedly connected with a clamping unit (3), the bottom of the side plate (2) is fixedly connected with a hole opening unit (4), and the top of the bottom plate (1) is fixedly connected with a mechanical arm unit (5); The hole opening unit (4) comprises a servo motor 2 (41), the output end of the servo motor 2 (41) is fixedly connected to a screw rod (42), the bottom opposite surface of the side plate (2) is fixedly connected to a guide rod (43), the outer surface of the screw rod (42) is threadedly connected to a sliding plate 1 (44), the inner wall of the sliding plate 1 (44) is slidably connected to the outer surface of the guide rod (43), the top of the sliding plate 1 (44) is fixedly connected to a transverse movement device (45), and the outer surface of the transverse movement device (45) is provided with a hole opening mechanism (46); The hole opening mechanism (46) comprises a sliding plate 2 (461), the top of the sliding plate 2 (461) is fixedly connected to a telescopic rod (462), the top of the telescopic rod (462) is fixedly connected to a servo motor 3 (463), the output end of the servo motor 3 (463) is fixedly connected to a drill unit (464), and the outer surface of the telescopic rod (462) is fixedly connected to a cleaning mechanism (465).

2. A production process for double-sided transparent FPC without copper plating according to claim 1, characterized in that: The outer surface of the second servo motor (41) is fixedly connected to the bottom of the side plate (2), and the inner wall of the second sliding plate (461) is slidably connected to the outer surface of the transverse movement device (45).

3. The production process of a double-sided transparent FPC without copper plating according to claim 1, characterized in that: The drill unit (464) mechanism comprises an air bin (4641), a drill bit (4642) is fixedly connected to the top of the air bin (4641), a ventilation groove (4643) is arranged on the drill bit (4642), a ventilation hole (4644) is arranged at one end of the drill bit (4642) close to the air bin (4641), an inner plate (4645) is slidably connected to the inner wall of the air bin (4641), support rods (4646) are symmetrically arranged at both ends of the inner plate (4645), a magnetic block (4647) is fixedly connected to one end away from the inner plate (4645), and a compression plate (4648) is fixedly connected to the top of the inner plate (4645).

4. A production process for double-sided transparent FPC without copper plating according to claim 3, characterized in that: The bottom of the air bin (4641) is fixedly connected to the output end of the servo motor three (463).

5. The production process of a double-sided transparent FPC without copper plating according to claim 1, characterized in that: The cleaning mechanism (465) comprises a second support rod (4651), the top of which is fixedly connected to a slide plate, an end of the second support rod (4651) close to the arc plate (4653) is fixedly connected to a second magnetic block (4652), an outer surface of the arc plate (4653) is provided with an insertion groove (4654), an insertion column (4655) is clamped in the insertion groove (4654), and a sponge block (4656) is provided at one end of the insertion column (4655).

6. The production process of a double-sided transparent FPC without copper plating according to claim 5, characterized in that: The bottom of the second support rod (4651) is fixedly connected to the outer surface of the telescopic rod (462), and the second magnetic block (4652) and the first magnetic block (4647) attract each other.

7. The production process of a double-sided transparent FPC without copper plating according to claim 1, characterized in that: The mechanical arm unit (5) comprises a triangular plate (51), the top of the triangular plate (51) is fixedly connected to a mechanical arm (52), one end of the mechanical arm (52) away from the triangular plate (51) is fixedly connected to a carving device (53), the inner wall of the carving device (53) is fixedly connected to a carving knife (54), the outer surface of the carving device (53) is fixedly connected to a support plate (55), the outer surface of the support plate (55) is evenly provided with brushes (56), and the side of the carving device (53) away from the carving knife (54) is fixedly connected to an injection mechanism (57).

8. The production process of a double-sided transparent FPC without copper plating according to claim 7, characterized in that: The injection mechanism (57) comprises a storage bin (571), the outer surface of the storage bin (571) is fixedly connected with a spray device (572), the output end of the spray device (572) is fixedly connected with a nozzle (573), the outer surface of the spray device (572) is fixedly connected with an electromagnetic plate (574), the outer surface of the electromagnetic plate (574) is fixedly connected with a threaded rod (575), the end of the threaded rod (575) away from the electromagnetic plate (574) is fixedly connected with an electromagnetic plate (578), the outer surface of the threaded rod (575) is threadedly connected with a circular magnetic plate (576), and the outer surface of the circular magnetic plate (576) is evenly provided with a second brush (577).

9. A production process for double-sided transparent FPC without copper plating according to claim 8, characterized in that: The bottom of the triangular plate (51) is fixedly connected to the top of the bottom plate (1), and the outer surface of the storage bin (571) is fixedly connected to the outer surface of the engraving device (53).

10. The production process of a double-sided transparent FPC without copper plating according to claim 1, characterized in that: The clamping unit (3) comprises a servo motor (31), the outer surface of which is fixedly connected to the top of the side plate (2), the output end of which is fixedly connected to a rotating shaft (32), the end of which, which is farthest from the servo motor (31), is fixedly connected to a rotating plate (33), the inner wall of which is evenly provided with hydraulic pressure (34), the top of which is placed an FPC original plate (35).

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