Multi-station clamp for processing coating of substrate of circuit board

Abstract

The utility model discloses a multi-station clamp for processing a plating layer of a substrate of a circuit board. The multi-station clamp comprises a rotating shaft; the threaded pipe assembly comprises a first threaded pipe and a second threaded pipe which are arranged on the rotating shaft in a sleeving mode at intervals, and the rotating directions of external threads of the first threaded pipe and the second threaded pipe are opposite; the threaded sleeve assembly comprises a first threaded sleeve and a second threaded sleeve which are respectively screwed on the first threaded pipe and the second threaded pipe in a threaded manner; the motor is used for driving the rotating shaft to rotate; the first clamping jaw comprises two first clamping plates which are arranged below the first threaded sleeve and can be electrified for adsorption, and is used for clamping one corner of the circuit board; and the second clamping jaw comprises two second clamping plates which are arranged below the second threaded sleeve and can be electrified for adsorption, and is used for clamping the other corner of the circuit board. According to the utility model, circuit boards with different widths or thicknesses can be rapidly matched, and tedious procedures caused by manual adjustment of the distance between clamping jaws and replacement of clamping jaws with different models when the circuit boards with different sizes and specifications are faced are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a multi-station clamp used for processing the plating layer of a circuit board substrate. Background Art

[0002] The copper electroplating process for PCBs primarily involves the following steps: pretreatment, activation, electroplating, and post-processing. Pretreatment involves cleaning, pickling, and micro-etching to remove oil, oxide layers, and impurities from the PCB surface. The activation step uses a special activator to treat the PCB surface, making it active and facilitating copper deposition. The electroplating step involves immersing the PCB in a plating solution containing copper ions. Electric current is applied to reduce the copper ions to metallic copper, which is then deposited on the PCB surface. Post-processing includes cleaning, drying, and anti-oxidation treatment to remove residual plating solution and impurities from the PCB surface and prevent oxidation of the copper layer.

[0003] In the prior art, multiple sets of clamps are usually used to clamp multiple circuit boards and carry out the above-mentioned electroplating process simultaneously. Each set of clamps consists of two jaws, and the two jaws clamp the left and right sides of the circuit board respectively. Each jaw is composed of two hinged plates. A spring is provided between the two plates, and the spring drives the two plates to generate a clamping force to clamp the PCB circuit board. The spacing between the two jaws in each set of clamps is usually adjusted manually. When the width of the circuit board changes, the spacing between the two jaws needs to be manually adjusted to match the width of the circuit board. In addition, the clamps are only suitable for circuit boards with matching thickness. If the thickness of the electroplated circuit board changes, different types of clamps need to be replaced. Therefore, it can be seen that when the width or thickness of the electroplated circuit board changes, tedious manual operations are required to make the clamp match the circuit board. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a multi-station fixture for processing the plating of a circuit board substrate, so that the fixture can more quickly match circuit boards of different widths or thicknesses during the electroplating process.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide a multi-station fixture for processing the coating of a circuit board substrate, which includes:

[0006] shaft;

[0007] At least two sets of threaded tube assemblies are spaced apart, each set of the threaded tube assemblies includes a first threaded tube and a second threaded tube spaced apart by a predetermined distance and simultaneously sleeved and fixed on the rotating shaft; wherein the first threaded tube and the second threaded tube are both provided with external threads, and the external threads of the two tubes rotate in opposite directions;

[0008] The number of threaded sleeve assemblies is the same as the number of the threaded pipe assemblies, and each set of the threaded sleeve assemblies includes a first threaded sleeve and a second threaded sleeve; wherein the first threaded sleeve is threadedly screwed onto the first threaded pipe, and the second threaded sleeve is threadedly screwed onto the second threaded pipe;

[0009] a motor, the motor being used to drive the rotating shaft to rotate;

[0010] A guide rod, the guide rod is used to limit the first threaded sleeve and the second threaded sleeve to move only along the axial direction of the rotating shaft and not to rotate around the axial direction of the rotating shaft;

[0011] The first clamping jaws have the same number as the first threaded sleeves, and the first clamping jaws include a first fixed shell and two first clamping plates; the first fixed shell is fixedly connected to the bottom of the first threaded sleeve; the two first clamping plates are arranged on the lower side of the first fixed shell, a first spring is provided between the two first clamping plates, and the two first clamping plates can be brought closer to each other by generating magnetism through electricity to clamp one side of the circuit board;

[0012] The number of second clamping jaws is the same as that of the second threaded sleeves, and the second clamping jaws include a second fixed shell and two second clamping plates; the second fixed shell is fixedly connected to the bottom of the second threaded sleeve; the two second clamping plates are arranged on the lower side of the second fixed shell, a second spring is arranged between the two second clamping plates, and the two second clamping plates can approach each other by generating magnetism through electricity to clamp the other side of the circuit board.

[0013] Furthermore, the output shaft of the motor is connected to a first gear, the end of the rotating shaft close to the motor is connected to a second gear, and the second gear is meshed with the first gear;

[0014] The motor drives the rotating shaft to rotate through a gear set consisting of the first gear and the second gear.

[0015] Furthermore, a first slider is fixed to the side of the first threaded sleeve, and a second slider is fixed to the side of the second threaded sleeve;

[0016] The guide rod is parallel to the rotating shaft and is arranged beside the rotating shaft. The first sliding block and the second sliding block are both slidably sleeved on the guide rod.

[0017] Furthermore, the first clamping jaw further includes two first guide rods; a first notch is formed at the bottom of the first fixed housing, and the two first guide rods are spaced apart and arranged in the first notch, and the extension direction of the first guide rods is perpendicular to the extension direction of the rotating shaft; the two first clamping plates are respectively mounted on the two first guide rods; there are two first springs, and each of the first springs is mounted on the two first guide rods;

[0018] The second clamping jaw also includes two second guide rods; a second notch is provided at the bottom of the second fixed shell, and two second guide rods are arranged in the second notch at intervals, and the extension direction of the second guide rods is perpendicular to the extension direction of the rotating shaft; the two second clamping plates are both mounted on the two second guide rods; there are two second springs, and they are respectively mounted on the two second guide rods.

[0019] Furthermore, the first clamping plate is provided with a first recessed groove at a position corresponding to the first spring, so that the end of the first spring is placed in the first recessed groove;

[0020] The second clamping plate is provided with a second recessed groove at a position corresponding to the second spring, so that the end of the second spring can be placed in the second recessed groove.

[0021] Furthermore, when the two first clamping plates move toward each other to their closest position, the first spring is completely wrapped in the two first recesses, and the two first clamping plates are in contact with each other.

[0022] When the two second clamping plates move toward each other to their closest position, the second spring is completely wrapped in the two second recessed grooves, and the two second clamping plates are in contact with each other.

[0023] Furthermore, the first clamping jaw further includes a first electromagnet and a first iron sheet; wherein the first electromagnet is arranged on the inner wall of one of the first clamping plates, and the first iron sheet is arranged on the inner wall of the other first clamping plate;

[0024] The second clamping jaw further includes a second electromagnet and a second iron sheet; wherein the second electromagnet is arranged on the inner wall of one of the second clamping plates, and the second iron sheet is arranged on the inner wall of the other second clamping plate.

[0025] Furthermore, the first clamping jaw further includes two first rubber pads, which are respectively arranged on the inner walls of the two first clamping plates and respectively located below the first electromagnet and the first iron sheet;

[0026] The second clamping jaw further includes two second rubber pads, which are respectively arranged on the inner walls of the two second clamping plates and respectively located below the second electromagnet and the second iron sheet.

[0027] Furthermore, when two corresponding first rubber pads move toward each other, the initial spacing is 8 mm and the minimum spacing can be 0 mm; when two corresponding second rubber pads move toward each other, the initial spacing is 8 mm and the minimum spacing can be 0 mm.

[0028] Furthermore, an adjustment distance between the first clamping jaw and the corresponding second clamping jaw is between 180 mm and 380 mm.

[0029] The working principle and beneficial effects of the utility model are as follows:

[0030] When the width of the circuit board to be electroplated changes, the motor can be started to drive the rotating shaft to rotate. The rotation of the rotating shaft will drive the groups of threaded tube assemblies to rotate synchronously. Since the external threads of the first threaded tube and the second threaded tube in each group of threaded tube assemblies rotate in opposite directions, the rotation of the rotating shaft can drive the first threaded sleeve and the second threaded sleeve in each group of threaded sleeve assemblies to move toward or away from each other, thereby adjusting the spacing between the corresponding first clamping jaw and the second clamping jaw to adapt the spacing between the two clamping jaws to the width of the circuit board, thereby achieving the purpose of quickly matching circuit boards of different widths.

[0031] Since a first spring is provided between the two first clamps in the first clamp, and the two first clamps can also approach each other by generating magnetism when electricity is applied, the two first clamps 520 are separated in the initial state under the action of the first spring 530. When the circuit board needs to be clamped, the thickness of the circuit board does not need to be taken into consideration. As long as the thickness of the circuit board is less than the distance between the two first clamps, after power is applied, the two first clamps will be clamped together by the action of magnetic attraction while the two clamps are approaching each other. Similarly, when the two second clamps clamp the circuit board, the thickness of the circuit board does not need to be taken into consideration. As long as the thickness of the circuit board is less than the distance between the two second clamps, after power is applied, the two second clamps will be clamped together by the action of magnetic attraction while the two clamps are approaching each other. This achieves the purpose of quickly matching circuit boards of different thicknesses.

[0032] It can be seen that the multi-station clamp of the present invention can quickly match circuit boards of different widths or thicknesses, avoiding the cumbersome procedures of manually adjusting the distance between the two clamps and replacing different models of clamps when facing circuit boards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of a multi-station fixture for circuit board substrate plating processing provided by the utility model;

[0034] Figure 2 yes Figure 1 Enlarged view within the middle dotted line range;

[0035] Figure 3 yes Figure 1 A top view of

[0036] Figure 4 yes Figure 1 An independent diagram of the first threaded sleeve and the first clamping jaw;

[0037] Figure 5 yes Figure 4 The front view and the corresponding AA cross-sectional view;

[0038] Figure 6 yes Figure 1 An independent diagram of the second threaded sleeve and the second clamping jaw;

[0039] Figure 7 yes Figure 6 The front view and the corresponding BB-section view;

[0040] Figure 8 yes Figure 1 Schematic diagram of a multi-station fixture used for circuit board substrate plating processing clamping a circuit board. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to specific embodiments, but the implementation manner of the present invention is not limited thereto.

[0042] See also Figures 1 to 7 The utility model provides a multi-station fixture for circuit board substrate plating processing, which includes: a rotating shaft 100, a threaded tube assembly 200, a threaded sleeve assembly 300, a motor 300, a guide rod 400, a first clamping jaw 500 and a second clamping jaw 600.

[0043] The threaded tube assemblies 200 are provided in at least two groups spaced apart from each other. Each group of threaded tube assemblies 200 includes a first threaded tube 210 and a second threaded tube 220 spaced apart by a predetermined distance and simultaneously sleeved and fixed on the rotating shaft 100. The first threaded tube 210 and the second threaded tube 220 are both provided with external threads, and the external threads of the two threads rotate in opposite directions.

[0044] The number of the threaded sleeve assemblies 300 is the same as that of the threaded pipe assemblies 200, and each set of threaded sleeve assemblies 300 includes a first threaded sleeve 310 and a second threaded sleeve 320. The first threaded sleeve 310 is screwed onto the first threaded pipe 210, and the second threaded sleeve 320 is screwed onto the second threaded pipe 220.

[0045] The motor 300 is used to drive the rotating shaft 100 to rotate.

[0046] The guide rod 400 is used to limit the first threaded sleeve 310 and the second threaded sleeve 320 to only move along the axial direction of the rotating shaft 100 and not to rotate around the axial direction of the rotating shaft 100 .

[0047] The number of the first clamping jaws 500 is the same as the number of the first threaded sleeves 310. Figure 4The first clamping jaw 500 includes a first fixed housing 510 and two first clamping plates 520. The first fixed housing 510 is fixedly connected to the bottom of the first threaded sleeve 310. The two first clamping plates 520 are disposed on the underside of the first fixed housing 510. A first spring 530 is disposed between the two first clamping plates 520. The two first clamping plates 520 can be brought closer together by applying electricity to generate magnetism, thereby clamping one side of the circuit board.

[0048] The number of the second clamping jaws 600 is the same as that of the second threaded sleeves 320. The second clamping jaws 600 include a second fixing shell 610 and two second clamping plates 620. Figure 6 The second fixing housing 610 is fixedly connected to the bottom of the second threaded sleeve 320. Two second clamping plates 620 are disposed on the lower side of the second fixing housing 610. A second spring 630 is disposed between the two second clamping plates 620. The two second clamping plates 620 can be brought closer to each other by applying electricity to generate magnetism to clamp the other side of the circuit board.

[0049] As an example, Figures 1 to 7 The multi-station fixture for plating circuit board substrates shown here includes three sets of threaded tube assemblies 200; correspondingly, the number of threaded sleeve assemblies 300 is also three. Therefore, the multi-station fixture can simultaneously clamp three circuit boards for electroplating process. Figure 8 When clamping the circuit board a1, the first clamping jaw 500 and the second clamping jaw 600 under each set of threaded sleeve components 300 will respectively clamp at the left and right corners of the top width direction of the circuit board a1.

[0050] When the width of the circuit board to be electroplated changes, the motor 300 can be started to drive the rotating shaft 100 to rotate. The rotation of the rotating shaft 100 will drive the groups of threaded tube assemblies 200 to rotate synchronously. Since the external threads of the first threaded tube 210 and the second threaded tube 220 in each group of threaded tube assemblies 200 rotate in opposite directions, when the rotating shaft 100 rotates, it can drive the first threaded sleeve 310 and the second threaded sleeve 320 in each group of threaded sleeve assemblies 300 to move toward or away from each other, thereby adjusting the spacing between the corresponding first clamping jaw 500 and the second clamping jaw 600, so that the spacing between the two clamping jaws is adapted to the width of the circuit board, thereby achieving the purpose of quickly matching circuit boards of different widths.

[0051] Because a first spring 530 is provided between the two first clamping plates 520 in the first clamping jaw 500, and the two first clamping plates 520 can also approach each other by generating magnetism when electricity is applied, the two first clamping plates 520 are initially separated by the action of the first spring 530. When a circuit board needs to be clamped, the thickness of the circuit board does not matter. As long as the thickness of the circuit board is less than the distance between the two first clamping plates 520, after power is applied, the two first clamping plates 520 will be able to clamp the corners of the circuit board as they approach each other under the action of magnetic attraction. Similarly, when the two second clamping plates 620 clamp the circuit board, the thickness of the circuit board does not matter. As long as the thickness of the circuit board is less than the distance between the two second clamping plates 620, after power is applied, the two second clamping plates 620 will be able to clamp the corners of the circuit board as they approach each other under the action of magnetic attraction. This achieves the purpose of quickly matching circuit boards of different thicknesses.

[0052] It can be seen that the multi-station clamp of the present invention can quickly match circuit boards of different widths or thicknesses, avoiding the cumbersome procedures of manually adjusting the distance between the two clamps and replacing different models of clamps when facing circuit boards of different sizes.

[0053] In a preferred embodiment, see Figure 1 and Figure 2 The output shaft of the motor 300 is connected to a first gear 710, and the end of the rotating shaft 100 closer to the motor 300 is connected to a second gear 720, and the second gear 720 is meshed with the first gear 710. Thus, the motor can drive the rotating shaft 100 to rotate through the gear set formed by the first gear 710 and the second gear 720.

[0054] The rotating shaft 100 is rotatably mounted on the first and second fixed frames 910 and 920, respectively, via a bearing at each end. One end of the rotating shaft 100 passes through the second fixed frame 920 and is connected to the second gear 720. A third fixed frame 930 is provided at a predetermined distance on the side of the second fixed frame 920 facing away from the first fixed frame 910. The first gear 710 is mounted on a gear shaft (not shown), the ends of which are mounted on the second and third fixed frames 920 and 930, respectively, via a bearing. The motor 300 is fixed to the side of the third fixed frame 930 facing away from the second fixed frame 920. The rotating shaft of the motor 300 passes through the third fixed frame 930 and is connected to the gear shaft via a coupling (not shown). The first, second, and third fixed frames 920 and 930 are fixed to corresponding frames (not shown), thereby securing the entire multi-station fixture.

[0055] In a preferred embodiment, see Figures 1 to 3A first slider 810 is fixed to the side of the first threaded sleeve 310, and a second slider 820 is fixed to the side of the second threaded sleeve 320. The guide rod 400 is arranged parallel to the side of the rotating shaft 100, and the first slider 810 and the second slider 820 are both slidably mounted on the guide rod 400.

[0056] In a preferred embodiment, see Figure 4 The first clamping jaw 500 further includes two first guide rods 540. A first slot 511 is defined at the bottom of the first fixed housing 510. Two first guide rods 540 are spaced apart within the first slot 511, extending perpendicularly to the direction of extension of the rotating shaft 100. The two first clamping plates 520 are each sleeved on the two first guide rods 540 and are movable back and forth along the first guide rods 540. Two first springs 530 are provided, each sleeved on one of the two first guide rods 540.

[0057] See also Figure 6 The second clamping jaw 600 also includes two second guide rods 640. A second notch 611 is defined at the bottom of the second fixed housing 610. Two second guide rods 640 are spaced apart within the second notch 611, extending perpendicularly to the direction of extension of the rotating shaft 100. The two second clamping plates 620 are each mounted on the two second guide rods 640 and are movable back and forth along the second guide rods 640. Two second springs 630 are provided, each mounted on one of the two second guide rods 640.

[0058] For further information, see Figure 5 The first clamping plates 520 are provided with first recesses 521 at positions corresponding to the first springs 530, for the ends of the first springs 530 to be placed in the first recesses 521. When the two first clamping plates 520 move toward each other and are closest to each other, the first springs 530 are completely enclosed in the two first recesses 521, and the two first clamping plates 520 are now in contact with each other.

[0059] See also Figure 7 The second clamping plates 620 are provided with second recesses 621 at positions corresponding to the second springs 630, for the ends of the second springs 630 to be placed in the second recesses 621. When the two second clamping plates 620 move toward each other to their closest position, the second springs 630 are completely enclosed in the two second recesses 621, and the two second clamping plates 620 are now in contact with each other.

[0060] For further information, see Figure 4, the first clamping jaw 500 also includes a first electromagnet 550 and a first iron sheet 560. The first electromagnet 550 is arranged on the inner wall of one of the first clamping plates 520, and the first iron sheet 560 is arranged on the inner wall of the other first clamping plate 520. During operation, after the first electromagnet 550 is energized, it can generate an attractive force on the first iron sheet 560, thereby driving the two first clamping plates 520 to approach each other, and then clamping the corners of the circuit board. It can be seen that when the two first clamping plates 520 clamp the circuit board, the thickness of the circuit board does not need to be concerned. As long as the thickness of the circuit board is less than the distance between the two first clamping plates 520, the circuit board can be clamped tightly after the first electromagnet 550 is energized.

[0061] See also Figure 6 , the second clamping jaw 600 also includes a second electromagnet 650 and a second iron sheet 660. The second electromagnet 650 is arranged on the inner wall of one of the second clamping plates 620, and the second iron sheet 660 is arranged on the inner wall of the other second clamping plate 620. During operation, after the second electromagnet 650 is energized, it can generate an attractive force on the second iron sheet 660, thereby driving the two second clamping plates 620 closer to each other, and then clamping the corners of the circuit board. It can be seen that when the two second clamping plates 620 clamp the circuit board, the thickness of the circuit board does not need to be concerned. As long as the thickness of the circuit board is less than the distance between the two second clamping plates 620, the circuit board can be clamped tightly after the second electromagnet 650 is energized.

[0062] For further information, see Figure 4 The first clamping jaw 500 further includes two first rubber pads 570, which are respectively arranged on the inner walls of the two first clamping plates 520 and are respectively located below the first electromagnet 550 and the first iron sheet 560. Figure 6 The second clamping jaw 600 further includes two second rubber pads 670 , which are respectively arranged on the inner walls of the two second clamping plates 620 and are respectively located below the second electromagnet 650 and the second iron sheet 660 .

[0063] When clamping the circuit board, the first rubber pad 570 and the second rubber pad 670 are in contact with the circuit board, so they can play a buffering role, thereby avoiding hard collision with the circuit board and damaging the circuit board.

[0064] Preferably, within the same set of first clamping jaws 500, the initial spacing between two corresponding first rubber pads 570 during their movement toward each other is 8 mm, and the minimum spacing can be 0 mm. Within the same set of second clamping jaws 600, the initial spacing between two corresponding second rubber pads 670 during their movement toward each other is 8 mm, and the minimum spacing can be 0 mm. PCB thicknesses typically range from 0.5 mm to 3.0 mm, with common PCB thicknesses including 0.8 mm, 1.0 mm, 1.6 mm, and 2.0 mm. This spacing allows for clamping PCBs of commonly encountered thicknesses.

[0065] Preferably, the adjustable spacing between the first clamping jaw 500 and the corresponding second clamping jaw 600 is between 180 mm and 380 mm. This spacing is suitable for clamping circuit boards with dimensions of 8 inches x 8 inches (203.2 mm x 203.2 mm) or 12 inches x 12 inches (304.8 mm x 304.8 mm). Of course, the adjustable spacing between the first clamping jaw 500 and the second clamping jaw 600 can also be within other ranges to accommodate circuit boards of other sizes.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-station fixture for circuit board substrate plating processing, characterized in that: include: Rotating shaft (100); At least two groups of threaded tube assemblies (200) are spaced apart, each group of the threaded tube assemblies (200) comprises a first threaded tube (210) and a second threaded tube (220) which are spaced apart by a predetermined distance and are simultaneously sleeved and fixed on the rotating shaft (100); wherein the first threaded tube (210) and the second threaded tube (220) are both provided with external threads, and the rotation directions of the external threads of the two are opposite; The number of threaded sleeve assemblies (300) is the same as that of the threaded pipe assemblies (200), and each set of the threaded sleeve assemblies (300) comprises a first threaded sleeve (310) and a second threaded sleeve (320); wherein the first threaded sleeve (310) is threadedly connected to the first threaded pipe (210), and the second threaded sleeve (320) is threadedly connected to the second threaded pipe (220); a motor (300), the motor (300) being used to drive the rotating shaft (100) to rotate; a guide rod (400), the guide rod (400) being used to limit the first threaded sleeve (310) and the second threaded sleeve (320) to move only along the axial direction of the rotating shaft (100) and not to rotate around the axial direction of the rotating shaft (100); The first clamping jaws (500) are the same number as the first threaded sleeves (310), and the first clamping jaws (500) include a first fixed shell (510) and two first clamping plates (520); the first fixed shell (510) is fixedly connected to the bottom of the first threaded sleeve (310); the two first clamping plates (520) are arranged on the lower side of the first fixed shell (510), a first spring (530) is arranged between the two first clamping plates (520), and the two first clamping plates (520) can be brought close to each other by means of magnetization through electricity to clamp one side of the circuit board; The second clamping jaws (600) are the same in number as the second threaded sleeves (320), and the second clamping jaws (600) include a second fixed shell (610) and two second clamping plates (620); the second fixed shell (610) is fixedly connected to the bottom of the second threaded sleeve (320); the two second clamping plates (620) are arranged on the lower side of the second fixed shell (610), a second spring (630) is arranged between the two second clamping plates (620), and the two second clamping plates (620) can be brought close to each other by generating magnetism through electricity to clamp the other side of the circuit board.

2. The multi-station fixture for circuit board substrate plating processing according to claim 1, characterized in that: The output shaft of the motor (300) is connected to a first gear (710), and the end of the rotating shaft (100) close to the motor (300) is connected to a second gear (720), and the second gear (720) and the first gear (710) are meshed with each other; The motor drives the rotating shaft (100) to rotate via a gear set consisting of the first gear (710) and the second gear (720).

3. The multi-station fixture for circuit board substrate plating processing according to claim 1, characterized in that: A first slider (810) is fixed to a side surface of the first threaded sleeve (310), and a second slider (820) is fixed to a side surface of the second threaded sleeve (320); The guide rod (400) is arranged parallel to the rotating shaft (100) and beside the rotating shaft (100), and the first slider (810) and the second slider (820) are both slidably sleeved on the guide rod (400).

4. The multi-station fixture for circuit board substrate plating processing according to claim 1, characterized in that: The first clamping jaw (500) further comprises two first guide rods (540); a first notch (511) is formed at the bottom of the first fixed shell (510); the two first guide rods (540) are spaced apart in the first notch (511), and the extending direction of the first guide rods (540) is perpendicular to the extending direction of the rotating shaft (100); the two first clamping plates (520) are both sleeved on the two first guide rods (540); there are two first springs (530), which are respectively sleeved on the two first guide rods (540); The second clamping jaw (600) further includes two second guide rods (640); a second notch (611) is provided at the bottom of the second fixed shell (610), and the two second guide rods (640) are spaced apart in the second notch (611), and the extension direction of the second guide rods (640) is perpendicular to the extension direction of the rotating shaft (100); the two second clamping plates (620) are both sleeved on the two second guide rods (640); there are two second springs (630), which are respectively sleeved on the two second guide rods (640).

5. The multi-station fixture for circuit board substrate plating processing according to claim 4, characterized in that: The first clamping plate (520) is provided with a first recessed groove (521) at a position corresponding to the first spring (530), so that the end of the first spring (530) can be placed in the first recessed groove (521); The second clamping plate (620) is provided with a second recessed groove (621) at a position corresponding to the second spring (630), so that the end of the second spring (630) can be placed in the second recessed groove (621).

6. The multi-station fixture for circuit board substrate plating processing according to claim 5, characterized in that: When the two first clamping plates (520) move toward each other to the closest position, the first spring (530) is completely wrapped in the two first sinking grooves (521), and at this time, the two first clamping plates (520) are in contact with each other; When the two second clamping plates (620) move toward each other to the closest position, the second spring (630) is completely wrapped in the two second sinking grooves (621), and at this time, the two second clamping plates (620) are in contact with each other.

7. A multi-station fixture for circuit board substrate plating processing according to any one of claims 4 to 6, characterized in that: The first clamping jaw (500) further comprises a first electromagnet (550) and a first iron sheet (560); wherein the first electromagnet (550) is arranged on the inner wall of one of the first clamping plates (520), and the first iron sheet (560) is arranged on the inner wall of the other first clamping plate (520); The second clamping jaw (600) further comprises a second electromagnet (650) and a second iron sheet (660); wherein the second electromagnet (650) is arranged on the inner wall of one of the second clamping plates (620), and the second iron sheet (660) is arranged on the inner wall of the other second clamping plate (620).

8. The multi-station fixture for circuit board substrate plating processing according to claim 7, characterized in that: The first clamping jaw (500) further comprises two first rubber pads (570), the two first rubber pads (570) being respectively arranged on the inner walls of the two first clamping plates (520) and respectively located below the first electromagnet (550) and the first iron sheet (560); The second clamping jaw (600) further comprises two second rubber pads (670), which are respectively arranged on the inner walls of the two second clamping plates (620) and respectively located below the second electromagnet (650) and the second iron sheet (660).

9. The multi-station fixture for circuit board substrate plating processing according to claim 8, characterized in that: During the process of two corresponding first rubber pads (570) moving toward each other, the initial spacing is 8 mm and the minimum spacing can be 0 mm; during the process of two corresponding second rubber pads (670) moving toward each other, the initial spacing is 8 mm and the minimum spacing can be 0 mm.

10. The multi-station fixture for circuit board substrate plating processing according to claim 1, characterized in that: The adjustment distance between the first clamping jaw (500) and the corresponding second clamping jaw (600) is between 180 mm and 380 mm.

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