Inner layer pickling and etching process and device for developing line

Abstract

The invention discloses an inner layer pickling and etching process and device of a developing line, relates to the field of PCB etching processing, solves the problem that the existing pickling process is long and reduces production efficiency, comprises a device shell and slots opened at the left and right ends of the device shell, the front and rear walls of the inner part of the device shell are fixedly installed with special-shaped guide frames, both ends of the special-shaped guide frames are penetrated through the slots, the two ends of the special-shaped guide frames are in a warped edge shape, a plurality of rotating shafts 1 and 2 which are equidistantly distributed are installed on the upper and lower parts of the special-shaped guide frames, and the front and rear ends of both are rotatably embedded in the interior of the device shell, and the outer sides of the rotating shafts 1 and 2 are fixedly sleeved with two rubber wheels, and the invention can guide the flexible inner layer board to the bottom of the device shell for immersion reaction of the pickling solution through the cooperation of the special-shaped guide frame and the transmission component, and can realize that the redundant copper foil on the surface of the flexible inner layer board is fully reacted in all directions and falls off in a short time.

Description

Technical Field

[0001] The invention relates to the field of PCB etching processing, in particular to an inner layer pickling etching process and device of a developing line. Background Art

[0002] The process of making inner layer circuit patterns of PCB circuit boards is generally: board casting - development - water washing twice - acid etching - water washing twice - film stripping - water washing twice - drying - board collection. Acid etching is to coat a layer of resist on the inner layer circuit after development. During the pickling process, the required circuits on the copper surface of the inner layer are protected by the resist, and the excess copper foil can be dissolved and removed by chemicals during pickling. After etching, it is washed twice with water to remove the resist, and the required copper wire circuit pattern is obtained.

[0003] The existing PCB inner layer board is a flexible circuit board. During the etching process, the excess copper foil is not dissolved by immersion pickling, but by the upper and lower nozzles built into the etching machine, which spray the reaction solution with a certain pressure to dissolve the excess copper foil on the upper and lower surfaces of the inner layer board. In order to ensure that the excess copper foil on the upper and lower surfaces of the inner layer board can be completely and effectively dissolved, the spray etching mechanism is designed to be very long, or the inner layer board moves very slowly during the transportation process, but this will cause the processing time required for the inner layer board in the etching stage to be longer, and the processing efficiency of the entire process of the inner layer board will be reduced. For this reason, we propose an inner layer pickling etching process and device for a developing line. Summary of the invention

[0004] The object of the present invention is to provide an inner layer pickling and etching process and device for an immersion developing line for rapid all-round pickling of a flexible inner layer board, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The invention discloses an inner layer pickling and etching device for a developing line, comprising a device shell and slots opened at the left and right ends of the device shell, wherein the front and rear walls of the inner part of the device shell are fixedly installed with a special-shaped guide frame, both ends of the special-shaped guide frame are penetrated through the slots, and both ends of the special-shaped guide frame are warped, and a plurality of rotating shafts 1 and 2 distributed at equal intervals are installed at the upper and lower parts of the special-shaped guide frame, and the front and rear ends of both are rotatably embedded in the inner part of the device shell, and the outer sides of the rotating shaft 1 and the rotating shaft 2 are fixedly sleeved with two rubber wheels, and the spacing between the two rubber wheels distributed axially adjacent is smaller than the gap used for guiding inside the special-shaped guide frame; a transmission assembly, wherein the transmission assembly that enables the plurality of rotating shafts 1 and 2 to transport flexible inner layer plates is installed at the rear end of the device shell, and a lower pressure assembly and an upper pressure assembly are installed at the upper and lower parts of the recessed part of the special-shaped guide frame, wherein the two ends of the device shell are butted with the processing positions of the front and rear processes of the pickling process.

[0007] Preferably, the transmission assembly includes a gear fixedly sleeved on the outer surface of the rear end of each of the rotating shafts 1 and the rotating shafts 2, and the two gears axially adjacently distributed are movably meshed, the outer surfaces of several rotating shafts 1 are fixedly sleeved with synchronous wheels 1, and the synchronous wheels 1 are distributed at the rear ends of the gears, and the rear end of the device housing is equipped with a protective frame corresponding to the outside of several gears, and the protective frame is fixedly connected to the device housing, and the rear end of the protective frame is fixedly equipped with a motor, and the output end of the motor rotates through the protective frame and the device housing, the outer surface of the output end of the motor is fixedly sleeved with synchronous wheels 2, and a synchronous belt is installed between the synchronous wheels 2 and several synchronous wheels 1 for transmission, and the inner and outer surfaces of the synchronous belt are fitted with retaining plates, and the retaining plates are fixedly connected to the device housing, and the flexible inner layer plate can be guided by the special-shaped guide frame under the transportation of the previous workstation and enter the interior of the device housing, and at the same time, it is clamped and transported by rubber wheels distributed at the upper and lower ends of the special-shaped guide frame and rotating in the opposite direction.

[0008] Preferably, the lower pressure assembly includes an upper cover plate installed above the recessed portion of the special-shaped guide frame, two limit rods are fixedly installed on the top of the upper cover plate, and the limit rods slide through the device shell, and a spring 2 is fixedly installed between the top of the limit rod and the upper end surface of the device shell, and a connecting piece is installed at the upper end of the upper cover plate. When the upper cover plate moves downward, it can squeeze the pickling solution inside the device shell, so that the pickling solution applies pressure to the upper surface of the flexible inner layer plate.

[0009] Preferably, the connecting member includes a reduction gear box fixedly mounted on the inner wall of the device housing, the output end of the motor is fixedly connected to the input end of the reduction gear box, a transmission shaft is fixedly mounted on the output end of the reduction gear box, and the front end of the transmission shaft rotates and passes through the device housing, a shift block is fixedly sleeved on the outer surface of the transmission shaft, a dome column is fixedly mounted on the upper end of the upper cover plate through a crank bracket, and the upper end of the dome column is movably fitted with the outer surface of the shift block, and after the reduction gear box attenuates the rotation speed of the motor, the transmission shaft rotates, and the transmission shaft can intermittently squeeze the dome column downward through the shift block.

[0010] Preferably, the upper pressure assembly includes a lower cover plate installed below the recessed portion of the special-shaped guide frame, and the lower end of the lower cover plate is fixedly installed with an inclined bottom column through a second bent rod bracket, a frame is fixedly installed on the inner bottom surface of the device shell, and the inclined bottom column is slidably embedded in the interior of the frame, a slide plate is fixedly installed on the outer wall of the inclined bottom column, and the slide plate is slidably engaged with the frame, a spring is fixedly installed between the upper end of the slide plate and the frame, a slider is fitted on the bottom inclined surface of the inclined bottom column, a trigger piece is installed between the slider and the transmission shaft, and when the lower cover plate moves upward, the pickling solution can be pushed upward, so that the pickling solution applies pressure to the lower end surface of the flexible inner layer plate.

[0011] Preferably, the trigger member includes a rotating rod rotatably embedded in the front end of the device shell, the rotating rod and the front end of the transmission shaft are installed with a transmission belt through a transmission wheel, a limiting chuck is fixedly installed on the rear end of the rotating rod, and a corrugated column is fixedly installed inside the limiting chuck, a push rod is fixedly installed on one end of the slider close to the corrugated column, and the push rod slides through the frame, and an end of the push rod away from the slider is movably fitted with the corrugated arc surface of the corrugated column, and during the rotation of the limiting chuck, the push rod can be intermittently pushed by the corrugated column.

[0012] Preferably, the upper cover plate and the lower cover plate are in a symmetrical relationship, and grooves are provided on one end surface of the upper cover plate and the lower cover plate close to the special-shaped guide frame. The function of the grooves is that each time the upper cover plate and the lower cover plate move up and down synchronously, the grooves can hold a portion of the pickling solution and push it toward the flexible inner layer plate.

[0013] Preferably, the width of the slider and the inclined bottom column is consistent with the width of the inner cavity of the frame to ensure the stability of the movement of the slider and the inclined bottom column.

[0014] Preferably, when the spring 1 is in a maximum compression state, the spring 2 is in a maximum tension state.

[0015] An inner layer pickling and etching process of a developing line comprises the following steps:

[0016] S1: Pickling solution injection stage, inject the pickling solution into the interior of the device shell. During the injection process, it should be ensured that the liquid level of the solution is lower than the notch and higher than the maximum upper end horizontal plane after the upper cover plate rises;

[0017] S2: During the conveying, immersion and pickling stage, the flexible inner layer plate enters the interior of the device housing under the guidance of two symmetrically distributed special-shaped guide frames, and is clamped and conveyed by the synchronously counter-rotating rubber wheels distributed outside the first and second rotating shafts. During the conveying process, the flexible inner layer plate can be immersed and soaked in the pickling solution, and an all-round and effective pickling treatment can be performed;

[0018] S3: During the stage of applying pressure to the upper and lower surfaces of the flexible inner layer board, the upper cover plate and the lower cover plate can be moved up and down synchronously above and below the flexible inner layer board through the cooperation of the connecting parts and the triggering parts. When moving, the pickling solution can fluctuate inside the device shell. Each up and down movement can apply pressure to the upper and lower surfaces of the flexible inner layer board, accelerating the dissolution and shedding of excess copper foil.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention cooperates with the special-shaped guide frame and the transmission assembly. When the flexible inner layer plate is guided by the special-shaped guide frame and enters the interior of the device housing, the motor clamps and transports the edge of the flexible inner layer plate through the operation of the synchronous wheel 1 and the synchronous wheel 2 and the synchronous belt. During the transportation process, the flexible inner layer plate can be immersed in the bottom of the device housing through the guidance of the special-shaped guide frame, so that the pickling solution inside the device housing can fully wrap the flexible inner layer plate and react with the excess copper foil on the surface of the flexible inner layer plate in an all-round manner to make it fall off;

[0021] 2. The present invention uses the action of the upper pressure component and the lower pressure component. During the operation of the motor, the transmission shaft can be driven by the reduction box to rotate so that the upper cover plate moves up and down. At the same time, the transmission shaft drives the rotating rod through the transmission belt. During the rotation process, the corrugated column pushes the push rod to move the lower cover plate up and down, which can push the pickling solution inside the device shell and push the pickling solution toward the upper and lower surfaces of the flexible inner layer board, so that the pickling solution can apply pressure to the upper and lower surfaces of the flexible inner layer board. Under the action of pressure, the dissolution reaction of excess copper foil on the surface of the flexible inner layer board can be accelerated, as well as the speed of shedding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention as a whole;

[0024] Figure 3It is a schematic diagram of the internal structure of the housing of the device of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the motor of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the upper cover plate and the lower cover plate of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the special-shaped guide frame of the present invention;

[0028] Figure 7 This is a schematic diagram of the distribution structure of the first and second rotating shafts of the present invention;

[0029] Figure 8 It is a schematic diagram of the internal structure of the framework of the present invention;

[0030] Fig. 9 It is a schematic diagram of the corrugated column structure of the present invention.

[0031] In the figure: 1-device housing; 2-slot; 3-special-shaped guide frame; 4-rubber wheel; 5-transmission assembly; 6-lower pressure assembly; 7-upper pressure assembly; 8-connecting piece; 9-actuator; 10-rotating shaft one; 11-rotating shaft two; 12-protective frame; 13-gear; 14-synchronous wheel one; 15-motor; 16-synchronous wheel two; 17-synchronous belt; 18-retaining plate; 19-reduction box; 20-transmission shaft; 21-transmission belt; 22-frame; 23-rotating rod; 24-limiting chuck; 25-upper cover plate; 26-lower cover plate; 27-groove; 28-dome column; 29-shift block; 30-inclined bottom column; 31-slide plate; 32-spring one; 33-sliding block; 34-push rod; 35-corrugated column; 36-spring two; 37-limiting rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-Figure 3, an inner layer pickling and etching device of a developing line shown in the figure comprises a device housing 1 and slots 2 opened at the left and right ends of the device housing 1, a special-shaped guide frame 3 is fixedly installed on the front and rear walls of the inner part of the device housing 1, both ends of the special-shaped guide frame 3 are penetrated through the slot 2, and both ends of the special-shaped guide frame 3 are warped, and a plurality of equally distributed rotating shafts 10 and rotating shafts 2 11 are installed on the upper and lower parts of the special-shaped guide frame 3, and the front and rear ends of both are rotatably embedded in the inner part of the device housing 1, and the outer sides of the rotating shaft 10 and the rotating shaft 2 11 are fixedly sleeved with two rubber wheels 4, and the spacing between the two rubber wheels 4 axially adjacently distributed is smaller than the gap used for guiding inside the special-shaped guide frame 3; a transmission assembly 5, which can enable a plurality of rotating shafts 10 and rotating shafts 2 11 to transport the flexible inner layer board, is installed at the rear end of the device housing 1, and a lower pressure assembly 6 and an upper pressure assembly 7 are installed on the upper and lower parts of the recessed part of the special-shaped guide frame 3, wherein the two ends of the device housing 1 are butted with the processing positions of the front and rear processes of the pickling process.

[0035] See also Figure 4 and Figure 7 In the figure, the transmission assembly 5 includes a gear 13 fixedly sleeved on the outer surface of the rear end of each rotating shaft 10 and the rotating shaft 2 11, and the two gears 13 axially adjacently distributed are movably meshed, and the outer surfaces of several rotating shafts 10 are fixedly sleeved with synchronous wheels 14, and the synchronous wheels 14 are distributed at the rear ends of the gears 13. The rear end of the device housing 1 is corresponding to the outside of the several gears 13. The protective frame 12 is fixedly connected to the device housing 1, and the rear end of the protective frame 12 is fixedly installed with a motor 15, and the output end of the motor 15 rotates through The outer surface of the output end of the motor 15 is fixedly sleeved with a synchronous wheel 16, and a synchronous belt 17 is installed between the synchronous wheel 16 and a plurality of synchronous wheels 14. The inner and outer surfaces of the synchronous belt 17 are fitted with a retaining plate 18, and the retaining plate 18 is fixedly connected to the device housing 1. The flexible inner layer plate can enter the interior of the device housing 1 through the guidance of the special-shaped guide frame 3 under the transportation of the previous station, and at the same time, it is clamped and transported by the rubber wheels 4 distributed at the upper and lower ends of the special-shaped guide frame 3 and rotating in the opposite direction.

[0036] An inner layer pickling and etching process of a developing line comprises the following steps:

[0037] S1: Pickling solution injection stage, the pickling solution is injected into the interior of the device housing 1. During the injection process, it should be ensured that the liquid level of the solution is lower than the notch 2 and higher than the maximum upper end horizontal plane after the upper cover plate 25 rises;

[0038] S2: During the conveying, immersion and pickling stage, the flexible inner layer plate enters the interior of the device housing 1 under the guidance of two symmetrically distributed special-shaped guide frames 3, and is clamped and conveyed by the rubber wheels 4 distributed outside the rotating shaft 10 and the rotating shaft 2 11 and rotating in opposite directions. During the conveying process, the flexible inner layer plate can be immersed and soaked in the pickling solution, and an all-round and effective pickling treatment can be performed;

[0039] S3: In the stage of applying pressure to the upper and lower surfaces of the flexible inner layer board, the upper cover plate 25 and the lower cover plate 26 can be moved up and down synchronously above and below the flexible inner layer board through the cooperation of the connecting piece 8 and the triggering piece 9. When moving, the pickling solution can fluctuate inside the device shell 1. Each up and down movement can apply pressure to the upper and lower surfaces of the flexible inner layer board, accelerating the dissolution and shedding of excess copper foil.

[0040] Working principle of immersion-type all-round rapid pickling of flexible inner layer plates: When the flexible inner layer plates are guided into the interior of the device housing 1 by the special-shaped guide frame 3, the motor 15 can make several shafts 10 rotate synchronously through the cooperation of synchronous wheel 14, synchronous wheel 2 16 and synchronous belt 17. At the same time, through the active meshing of two gears 13, the shaft 10 and the shaft 2 11 can rotate synchronously in opposite directions. The edge of the flexible inner layer plate is clamped and transported by the rubber wheel 4. During the transportation process, the flexible inner layer plate can be guided by the special-shaped guide frame 3. The flexible inner layer board is immersed in the bottom of the device shell 1, so that the pickling solution inside the device shell 1 can fully wrap the flexible inner layer board, and react with the excess copper foil on the surface of the flexible inner layer board in an all-round way to make it fall off. After a period of immersion reaction, the flexible inner layer board is transported by the rubber wheel 4 and flows from the notch 2 at the other end of the device shell 1 to the next station. In the above manner, the flexible inner layer board is subjected to an immersion pickling reaction treatment, so that the flexible inner layer board can be effectively contacted with the pickling solution in an all-round way in a short time to undergo a dissolution reaction.

[0041] Example 2

[0042] See also Figure 5 and Figure 6 This embodiment further explains Example 1. The lower pressure component 6 includes an upper cover plate 25 installed above the recessed portion of the special-shaped guide frame 3. Two limit rods 37 are fixedly installed on the top of the upper cover plate 25, and the limit rods 37 slide through the device housing 1. A spring 26 is fixedly installed between the top of the limit rod 37 and the upper end surface of the device housing 1. A connecting piece 8 is installed at the upper end of the upper cover plate 25. When the upper cover plate 25 moves downward, the pickling solution inside the device housing 1 can be squeezed, so that the pickling solution applies pressure to the upper surface of the flexible inner layer plate.

[0043] See also Figure 5 , Figure 6 and Figure 8In the figure, the connecting member 8 includes a reduction box 19 fixedly mounted on the inner wall of the device housing 1, the output end of the motor 15 is fixedly connected to the input end of the reduction box 19, a transmission shaft 20 is fixedly mounted on the output end of the reduction box 19, and the front end of the transmission shaft 20 rotates and penetrates the device housing 1, a shift block 29 is fixedly sleeved on the outer surface of the transmission shaft 20, and a dome column 28 is fixedly mounted on the upper end of the upper cover plate 25 through a crank bracket, and the upper end of the dome column 28 is movably fitted with the outer surface of the shift block 29. After the reduction box 19 attenuates the speed of the motor 15, it rotates through the transmission shaft 20, and the transmission shaft 20 can intermittently squeeze the dome column 28 downward through the shift block 29.

[0044] See also Figure 5 , Figure 6 and Figure 8 In the figure, the upper pressure component 7 includes a lower cover plate 26 installed below the recessed portion of the special-shaped guide frame 3, and the lower end of the lower cover plate 26 is fixedly installed with an inclined bottom column 30 through a bent rod bracket 2, the inner bottom surface of the device housing 1 is fixedly installed with a frame 22, and the inclined bottom column 30 is slidably embedded in the frame 22, and a slide plate 31 is fixedly installed on the outer wall of the inclined bottom column 30, and the slide plate 31 is slidably engaged with the frame 22, and a spring 32 is fixedly installed between the upper end of the slide plate 31 and the frame 22, and a slider 33 is fitted on the bottom inclined surface of the inclined bottom column 30, and a trigger 9 is installed between the slider 33 and the transmission shaft 20, when the lower cover plate 26 moves upward, the pickling solution can be pushed upward, so that the pickling solution presses the lower end surface of the flexible inner layer plate.

[0045] See also Figure 8 and Fig. 9 In the figure, the trigger member 9 includes a rotating rod 23 rotatably embedded in the front end of the device housing 1, and the front end of the rotating rod 23 and the transmission shaft 20 are installed with a transmission belt 21 through a transmission wheel. A limit chuck 24 is fixedly installed at the rear end of the rotating rod 23, and a corrugated column 35 is fixedly installed inside the limit chuck 24. A push rod 34 is fixedly installed at one end of the slider 33 close to the corrugated column 35, and the push rod 34 slides through the frame 22, and the end of the push rod 34 away from the slider 33 is movably fitted with the corrugated arc surface of the corrugated column 35. During the rotation of the limit chuck 24, the push rod 34 can be intermittently pushed by the corrugated column 35.

[0046] See also Figure 8 In the figure, the upper cover plate 25 and the lower cover plate 26 are symmetrical, and a groove 27 is provided on one end surface of the upper cover plate 25 and the lower cover plate 26 close to the special-shaped guide frame 3. The function of the groove 27 is that each time the upper cover plate 25 and the lower cover plate 26 move up and down synchronously, the groove 27 can hold a part of the pickling solution and push it toward the flexible inner layer plate.

[0047] See also Figure 8 and Fig. 9In the figure, when spring 1 32 is in the maximum compression state, spring 2 36 is in the maximum tension state.

[0048] In this embodiment, during operation, the motor 15 can drive the transmission shaft 20 to rotate through the reduction box 19. When the transmission shaft 20 rotates, the upper cover plate 25 can be moved up and down by the intermittent pushing of the dome column 28 by the shift block 29 and the reaction force of the spring 2 36.

[0049] At the same time, the transmission shaft 20 drives the rotating rod 23 through the transmission belt 21. During the rotation process, the corrugated column 35 pushes the push rod 34, the slider 33 pushes the inclined bottom column 30, and the reaction force of the spring 1 32 can make the lower cover plate 26 move up and down.

[0050] When the flexible inner layer board is conveyed to the concave part of the special-shaped guide frame 3, the upper cover plate 25 and the lower cover plate 26 which move up and down synchronously in the same direction can push the pickling solution inside the device housing 1, and push the pickling solution toward the upper and lower surfaces of the flexible inner layer board, so that the pickling solution can apply pressure to the upper and lower surfaces of the flexible inner layer board. Under the action of pressure, the dissolution reaction of the excess copper foil on the surface of the flexible inner layer board and the speed of falling off can be accelerated. In this way, the excess copper foil on the surface of the flexible inner layer board can be completely fallen off and dissolved within a short reaction time, so as to ensure the production efficiency of the entire flexible inner layer board etching process;

[0051] The flexible inner plate always moves between the rotating shaft 10 and the rotating shaft 2 11. Since the flexible inner plate may be deformed after being pressurized by the pickling solution, the rotating shaft 10 and the rotating shaft 2 11 can prevent the flexible inner plate from being damaged due to excessive deformation.

[0052] Example 3

[0053] See also Fig. 9 This embodiment further illustrates that the width of the slider 33 and the inclined bottom column 30 is consistent with the width of the inner cavity of the frame 22 for other embodiments.

[0054] In this embodiment: to ensure the stability of the slider 33 and the inclined bottom column 30 when moving.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner layer pickling and etching device for a developing line, comprising a device housing (1) and slots (2) provided at left and right ends of the device housing (1), characterized in that: A special-shaped guide frame (3) is fixedly mounted on the front and rear walls of the device housing (1), both ends of the special-shaped guide frame (3) pass through the notch (2), both ends of the special-shaped guide frame (3) are warped, a plurality of rotating shafts (10) and rotating shafts (11) are mounted on the upper and lower parts of the special-shaped guide frame (3) and are equidistantly distributed, and both front and rear ends of the special-shaped guide frame (3) are rotatably embedded in the device housing (1), and two rubber wheels (4) are fixedly sleeved on the outer sides of the rotating shafts (10) and the rotating shafts (11), and the spacing between the two rubber wheels (4) that are axially adjacent to each other is smaller than the gap used for guiding inside the special-shaped guide frame (3); The transmission assembly (5) can make a plurality of the first rotating shafts (10) and the second rotating shafts (11) flexible; The transmission assembly (5) for conveying the inner layer plate is installed at the rear end of the device housing (1), and a lower pressure assembly (6) and an upper pressure assembly (7) are installed above and below the concave portion of the special-shaped guide frame (3); The lower pressure component (6) comprises an upper cover plate (25) mounted above the recessed portion of the special-shaped guide frame (3), two limit rods (37) are fixedly mounted on the top of the upper cover plate (25), and the limit rods (37) slide through the device housing (1), a second spring (36) is fixedly mounted between the top of the limit rod (37) and the upper end surface of the device housing (1), and a connecting piece (8) is mounted on the upper end of the upper cover plate (25); The connecting member (8) comprises a reduction box (19) fixedly mounted on the inner wall of the device housing (1), the output end of the motor (15) and the input end of the reduction box (19) are fixedly connected, a transmission shaft (20) is fixedly mounted on the output end of the reduction box (19), and the front end of the transmission shaft (20) rotatably penetrates the device housing (1), a shift block (29) is fixedly sleeved on the outer surface of the transmission shaft (20), a dome column (28) is fixedly mounted on the upper end of the upper cover plate (25) via a crank bracket, and the upper end of the dome column (28) is movably fitted with the outer surface of the shift block (29); The upper pressure component (7) comprises a lower cover plate (26) mounted below the recessed portion of the special-shaped guide frame (3), and a slanted bottom column (30) is fixedly mounted on the lower end of the lower cover plate (26) via a second bent rod bracket, a frame (22) is fixedly mounted on the inner bottom surface of the device housing (1), and the slanted bottom column (30) is slidably embedded in the frame (22), a slide plate (31) is fixedly mounted on the outer wall of the slanted bottom column (30), and the slide plate (31) is slidably embedded in the frame (22), a spring (32) is fixedly mounted between the upper end of the slide plate (31) and the frame (22), a slider (33) is fitted on the bottom slant of the slanted bottom column (30), and a trigger (9) is mounted between the slider (33) and the transmission shaft (20).

2. The inner layer pickling and etching device of a developing line according to claim 1, characterized in that: The transmission assembly (5) comprises a gear (13) fixedly sleeved on the outer surface of the rear end of each of the rotating shafts (10) and the rotating shafts (11), two of the gears (13) arranged adjacent to each other in the axial direction are movably meshed, the outer surfaces of a plurality of the rotating shafts (10) are fixedly sleeved with synchronous wheels (14), and the synchronous wheels (14) are arranged at the rear ends of the gears (13), and the rear end of the device housing (1) is provided with a protective frame (12) corresponding to the outside of a plurality of the gears (13), and the protective frame (12) is connected to the device housing (1). The protective frame (12) is fixedly connected, and a motor (15) is fixedly mounted on the rear end of the protective frame (12). The output end of the motor (15) rotates and penetrates the protective frame (12) and the device housing (1). A second synchronous wheel (16) is fixedly sleeved on the outer surface of the output end of the motor (15). A synchronous belt (17) is installed between the second synchronous wheel (16) and a plurality of the first synchronous wheels (14). A retaining plate (18) is fitted on the inner and outer surfaces of the synchronous belt (17), and the retaining plate (18) is fixedly connected to the device housing (1).

3. The inner layer pickling and etching device of a developing line according to claim 2, characterized in that: The actuating member (9) comprises a rotating rod (23) rotatably embedded in the front end of the device housing (1); a transmission belt (21) is installed at the front end of the rotating rod (23) and the transmission shaft (20) via a transmission wheel; a limiting chuck (24) is fixedly installed at the rear end of the rotating rod (23); a corrugated column (35) is fixedly installed inside the limiting chuck (24); a push rod (34) is fixedly installed at one end of the slider (33) close to the corrugated column (35); the push rod (34) slides through the frame (22); and an end of the push rod (34) away from the slider (33) is movably fitted with the corrugated arc surface of the corrugated column (35).

4. The inner layer pickling and etching device of a developing line according to claim 3, characterized in that: The upper cover plate (25) and the lower cover plate (26) are in a symmetrical relationship, and a groove (27) is formed on one end surface of the upper cover plate (25) and the lower cover plate (26) close to the special-shaped guide frame (3).

5. The inner layer pickling and etching device of a developing line according to claim 4, characterized in that: The widths of the sliding block (33) and the inclined bottom column (30) are consistent with the width of the inner cavity of the frame (22).

6. The inner layer pickling and etching device of a developing line according to claim 5, characterized in that: When the spring 1 (32) is in a maximum compression state, the spring 2 (36) is in a maximum tension state.

7. An inner layer pickling and etching process of a developing line, characterized in that: The following steps are involved: S1: Pickling solution injection stage, injecting the pickling solution into the interior of the device housing (1). During the injection process, it should be ensured that the liquid level of the solution is lower than the notch (2) and higher than the maximum upper end horizontal plane after the upper cover plate (25) rises; S2: in the stage of conveying, immersing and pickling, the flexible inner layer plate is guided by two symmetrically distributed special-shaped guide frames (3) to enter the interior of the device housing (1), and is clamped and conveyed by rubber wheels (4) distributed outside the rotating shaft 1 (10) and the rotating shaft 2 (11) and rotating in opposite directions. During the conveying process, the flexible inner layer plate can be immersed and soaked in the pickling solution, and an all-round and effective pickling treatment can be performed; S3: In the stage of applying pressure to the upper and lower surfaces of the flexible inner layer board, the upper cover plate (25) and the lower cover plate (26) can be moved up and down synchronously above and below the flexible inner layer board through the cooperation of the connecting member (8) and the trigger member (9). When moving, the pickling solution can fluctuate inside the device housing (1). Each up and down movement can apply pressure to the upper and lower surfaces of the flexible inner layer board, thereby accelerating the dissolution and shedding of excess copper foil.

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