Fixing device for circuit board assembly and circuit board assembly system

Abstract

The invention discloses a fixing device for circuit board assembly and a circuit board assembly system, and relates to the technical field of circuit board processing. The fixing device for assembling the circuit board comprises a mounting base body, a first clamping assembly and a second clamping assembly, wherein the first clamping assembly comprises at least two first clamping pieces which can be relatively close to or far away from each other along a first direction; the second clamping assembly comprises at least two second clamping pieces which can be relatively close to or away from each other in the second direction. The second clamping piece can be lifted to a first height position or a second height position in the third direction; the first direction and the second direction are located on the bearing surface, and the third direction is perpendicular to the bearing surface. The fixing device for circuit board assembly can be suitable for fixing circuit boards of different sizes, and frequent replacement of the fixing device is avoided; in addition, in actual use, the height position where the circuit board is located can be avoided, the device can be suitable for the condition that the circuit board slides and is fed, interference with the circuit board is avoided, and the circuit board is further effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board processing, and in particular to a fixing device for circuit board assembly. In addition, the present invention also relates to a circuit board assembly system including the above-mentioned fixing device for circuit board assembly. Background Art

[0002] When processing circuit boards, SMT (Surface Mounted Technology) technology is required. SMT patch refers to the abbreviation of a series of process flows based on PCB (Printed Circuit Board) printed circuit boards; electronic circuit surface assembly technology specifically refers to the circuit assembly technology that mounts pinless or short-lead surface assembly components on the surface of printed circuit boards or other substrates, and assembles them by soldering through methods such as reflow soldering or dip soldering.

[0003] During actual SMT placement, the printed circuit board needs to be clamped and fixed. Currently, when the SMT placement fixture is used to clamp and fix the printed circuit board, the printed circuit board needs to be placed inside a limiting groove, and then the limiting structure on the top is used to limit the top edge of the circuit board. Since the size of the limiting groove is fixed, circuit boards of different sizes need to correspond to different limiting grooves, resulting in poor convenience in the use of the device. In addition, the position of the printed circuit board is prone to rotational deviation, which affects the SMT placement quality of the printed circuit board.

[0004] In summary, how to provide a circuit board assembly fixing device that is applicable to circuit boards of different sizes is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a fixing device for circuit board assembly, which can be applied to circuit boards of different sizes by setting at least two first clamping members with adjustable clamping distance and at least two second clamping members with adjustable clamping distance, thereby avoiding frequent replacement of the fixing device. In addition, in actual use, the height position where the circuit board is located can be avoided, and it can be applied to the situation where the circuit board is slidingly loaded, avoiding interference with the circuit board, and further effectively protecting the circuit board; at the same time, it avoids the additional setting of the circuit board lifting or transfer equipment, and can effectively simplify the overall structure of the fixing device for circuit board assembly.

[0006] Another object of the present invention is to provide a circuit board assembly system including the above-mentioned circuit board assembly fixture.

[0007] In order to solve the above technical problems, the present invention provides a fixing device for circuit board assembly, comprising:

[0008] A mounting base is provided with a bearing surface for bearing the circuit board to be assembled;

[0009] A first clamping assembly, comprising at least two first clamping members that can be relatively close to or away from each other along a first direction, so as to clamp the circuit board at two opposite sides along the first direction;

[0010] A second clamping assembly includes at least two second clamping members that can be relatively close to or away from each other along a second direction, so as to clamp the circuit board at two opposite sides along the second direction; the second clamping members can be raised and lowered to a first height position or a second height position along a third direction;

[0011] When the second clamping member is located at the first height position, the second clamping member avoids the circuit board, and when the second clamping member is located at the second height position, the second clamping member can clamp the circuit board;

[0012] The first direction and the second direction are both located on the carrying surface, and the first direction is not parallel to the second direction, and the third direction is perpendicular to the carrying surface.

[0013] In one aspect, the first clamping assembly comprises:

[0014] A first clamping member, provided with a first clamping surface for contacting the circuit board;

[0015] At least two U-shaped connecting members, at least two of the U-shaped connecting members are arranged on both sides of the mounting base along the first direction, and one side wall of the U-shaped connecting member is connected to the first clamping member;

[0016] Two movable parts are arranged on a side of the mounting base away from the bearing surface, and the other side wall of the U-shaped connecting member is connected to the movable parts;

[0017] A first bidirectional screw rod, one end of which is threadedly connected to one of the movable parts, and the other end of which is threadedly connected to the other movable part.

[0018] On the other hand, the second clamping assembly comprises:

[0019] a second clamping member, the second clamping member having a second clamping surface in contact with the side surface of the circuit board along the second direction and a third clamping surface in contact with the upper surface of the circuit board;

[0020] A second bidirectional screw rod, one end of which is threadedly connected to one of the second clamping members, and the other end of which is threadedly connected to the other second clamping member;

[0021] At least two adjusting members, the adjusting members being arranged at two ends of the second bidirectional screw rod;

[0022] a first telescopic member, one end of which is connected to the second clamping member, and the other end of which is connected to the adjusting member;

[0023] a fixing rod, one end of which passes through the adjusting member and is fixed to the U-shaped connecting member, and the other end of which is provided as a limiting convex portion; the adjusting member can slide along the fixing rod to raise the second clamping member to the first height position;

[0024] The first elastic member has one end abutting against the limiting protrusion and the other end abutting against the adjusting member; under the elastic force of the first elastic member, the second clamping member is located at a second height position.

[0025] On the other hand, a first rotating operating portion is provided at one axial end of the first bidirectional screw, and a first anti-slip pattern is provided on an outer surface of the first rotating operating portion; a first limiting member is provided at the other axial end of the first bidirectional screw to limit the axial movement range of the first clamping member relative to the first bidirectional screw;

[0026] The second bidirectional screw is provided with a second rotation operation portion, the second rotation operation portion is located between two adjacent second clamping members in the axial direction of the second bidirectional screw, and the outer surface of the second rotation operation portion is provided with a second anti-slip pattern.

[0027] On the other hand, it also includes:

[0028] A material pushing assembly is arranged on one side of the mounting base, and is used to push the circuit board to be assembled to a preset clamping position;

[0029] A cleaning component is arranged on the mounting base and located on the feeding side of the first clamping component, and the cleaning component is used to clean dust on the surface of the circuit board.

[0030] On the other hand, the pusher assembly comprises:

[0031] The base is provided with a guide slot, the length direction of which extends along the feeding direction of the circuit board;

[0032] A sliding member, slidably disposed in the guide slot;

[0033] A second telescopic member, one end of which is connected to the sliding member;

[0034] A push rod, one end of which is connected to the other end of the second telescopic member, and the other end of which is provided with a push plate for contacting the circuit board;

[0035] A second elastic member, wherein one end of the second elastic member abuts against the push rod, and the other end of the second elastic member abuts against the sliding member.

[0036] In another aspect, the cleaning assembly comprises:

[0037] A cleaning frame, wherein a dust suction pipeline is connected to the top of the cleaning frame, and a fan for providing negative pressure is arranged in the cleaning pipeline; a dust suction hole is arranged on a side of the cleaning frame facing the bearing surface;

[0038] A cleaning member, disposed on a side of the cleaning frame facing the bearing surface, the cleaning member being used to contact the circuit board to clean dust on the surface of the circuit board;

[0039] A third telescopic member, one end of which is connected to the mounting base, and the other end of which is connected to the cleaning frame;

[0040] The third elastic member has one end abutting against the mounting base, and the other end abutting against the cleaning frame.

[0041] On the other hand, the cleaning assembly further includes a first photographing member, a first power member and a first controller;

[0042] The first camera is arranged on a side of the cleaning frame facing the incoming side of the circuit board. The first camera is used to obtain first image information of the circuit board and transmit the first image information to the first controller. The first controller obtains thickness information of the circuit board according to the first image information and controls the first power member to drive the third telescopic member to extend and retract according to the thickness information.

[0043] On the other hand, the first clamping assembly further includes a first pressure detection member, which is disposed on a surface of the first clamping assembly for contacting the circuit board; the second clamping assembly further includes a second pressure detection member, which is disposed on a surface of the second clamping assembly for contacting the circuit board;

[0044] The surface of the first clamping member for contacting the circuit board is provided with a mounting groove and a rolling member rotatably arranged in the mounting groove; the outer surface of the rolling member is provided with a first soft protective layer; the surface of the second clamping member for contacting the circuit board is provided with a second soft protective layer;

[0045] The circuit board assembly fixture further comprises a detection component, the detection component comprising a second camera for acquiring second image information of the circuit board to be assembled, a third camera for acquiring third image information of the circuit board, and a second controller; the second camera sends the second image information to the second controller, and the second controller obtains appearance information and size information of the circuit board according to the second image information; the third camera sends the third image information to the second controller, and the second controller obtains position information of the fixed circuit board according to the third image information;

[0046] The circuit board assembly fixing device further comprises a protective cover, which is mounted on the mounting base and is arranged outside the first clamping assembly and the second clamping assembly, and the protective cover is provided with a ventilation hole, and a filtering dust removal structure is provided at the ventilation hole;

[0047] The mounting base is provided with a first arc-shaped slide groove and a second arc-shaped slide groove, the first clamping assembly is provided with a first slider for cooperating with the first arc-shaped slide groove and sliding along the first arc-shaped slide groove, the first slider can be fixed to any position of the first arc-shaped slide groove to adjust the clamping direction of the first clamping assembly; the second clamping assembly is provided with a second slider for cooperating with the second arc-shaped slide groove and sliding along the second arc-shaped slide groove, the second slider can be fixed to any position of the second arc-shaped slide groove to adjust the clamping direction of the second clamping assembly.

[0048] A circuit board assembly system comprises any one of the above-mentioned fixing devices for circuit board assembly.

[0049] It can be seen from the above technical scheme that the fixing device for circuit board assembly provided by the present invention includes a mounting base, a first clamping component and a second clamping component, wherein the mounting base is provided with a bearing surface for bearing the circuit board to be assembled; the first clamping component includes at least two first clamping members that can be relatively close to or away from each other along a first direction, so as to clamp the circuit board on two opposite sides along the first direction; the second clamping component includes at least two second clamping members that can be relatively close to or away from each other along a second direction, so as to clamp the circuit board on two opposite sides along the second direction; the second clamping member can be raised and lowered to a first height position or a second height position along a third direction; when the second clamping member is at the first height position, the second clamping member avoids the circuit board, and when the second clamping member is at the second height position, the second clamping member can clamp the circuit board; the first direction and the second direction are both located on the bearing surface, and the first direction is not parallel to the second direction, and the third direction is perpendicular to the bearing surface.

[0050] During actual use, first, it is necessary to adjust the first clamping member and the second clamping member to a position avoiding the preset clamping position of the circuit board, at which time the second clamping member is located at a first height position; then the circuit board is loaded to the preset clamping position of the bearing surface; at least two first clamping members are controlled to be relatively close to each other to clamp the circuit board along the first direction; at least two second clamping members are controlled to descend to the second height position, and at least two second clamping members are controlled to be relatively close to each other to clamp the circuit board along the second direction to fix the circuit board.

[0051] The beneficial effects of the present invention are:

[0052] 1. In the present invention, at least two first clamping members can be relatively close to or far away from each other, and at least two second clamping members can be relatively close to or far away from each other, which can be applicable to fixing circuit boards of different sizes and avoid frequent replacement of fixing devices.

[0053] 2. The second clamping assembly in the present invention can be raised and lowered between a first height position and a second height position. In actual use, it can avoid the height position where the circuit board is located, and can be suitable for the situation of sliding loading of the circuit board to avoid interference with the circuit board, thereby further effectively protecting the circuit board. At the same time, it avoids the additional setting of the circuit board lifting or transfer equipment, and can effectively simplify the overall structure of the fixing device for circuit board assembly.

[0054] 3. The first clamping assembly and the second clamping assembly clamp and fix the circuit board from different directions, which can effectively improve the stability of the circuit board fixation and avoid the circuit board from shifting.

[0055] In addition, the present invention also provides a circuit board assembly system including the above-mentioned circuit board assembly fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A schematic diagram of the structure of a fixing device for assembling a circuit board provided in an embodiment of the present invention;

[0058] Figure 2 A schematic structural diagram of a portion of a fixing device for assembling a circuit board provided by an embodiment of the present invention;

[0059] Figure 3 is a schematic structural diagram of a first clamping assembly;

[0060] Figure 4 Schematic diagram of the installation position of the first bidirectional screw rod;

[0061] Figure 5 is a schematic diagram of the installation of the rolling element in the first clamping element;

[0062] Figure 6 is a structural schematic diagram of a second clamping assembly;

[0063] Figure 7 It is a structural schematic diagram of a U-shaped connector;

[0064] Figure 8 is a schematic diagram of a partial structure for adjusting the height position in the second clamping assembly;

[0065] Fig. 9 It is a structural schematic diagram of the pusher assembly;

[0066] Fig.10 for Fig. 9 A schematic cross-sectional view of the middle pusher assembly;

[0067] Fig.11 is a schematic diagram of the structure of the cleaning component;

[0068] Fig.12 for Fig.11 A schematic cross-sectional view of a cleaning frame in a cleaning assembly;

[0069] Fig.13 for Fig.11 A schematic cross-sectional view of the partial structure of the cleaning assembly including the third telescopic member.

[0070] Figures 1 to 13 middle:

[0071] 1-mounting base, 2-first clamping member, 3-second clamping member, 4-U-shaped connecting member, 5-movable groove, 6-movable member, 7-first bidirectional screw rod, 8-first rotating operating part, 9-first limiting member, 10-movable connecting block, 11-adjusting member, 12-second bidirectional screw rod, 13-second rotating operating part, 14-first telescopic member, 15-fixing rod, 16-limiting convex part, 17-first elastic member, 18-installing groove, 19-rolling member, 20-base, 21-second telescopic member, 22-push rod, 23-push plate, 24-guide slide groove, 25-sliding member, 26-guide rod, 27-second elastic member, 28-cleaning frame, 29-cleaning member, 30-dust suction hole, 31-dust suction pipeline, 32-third telescopic member, 33-third elastic member, 34-pushing assembly, 35-cleaning assembly. DETAILED DESCRIPTION

[0072] 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.

[0073] The core of the present invention is to provide a fixing device for circuit board assembly. By providing at least two first clamping members with adjustable clamping distance and at least two second clamping members with adjustable clamping distance, it can be applicable to circuit boards of different sizes and avoid frequent replacement of the fixing device.

[0074] Another core of the present invention is to provide a circuit board assembly system including the above-mentioned circuit board assembly fixture.

[0075] The present specific embodiment discloses a fixing device for circuit board assembly, comprising a mounting base 1, a first clamping assembly and a second clamping assembly, wherein the mounting base 1 is provided with a bearing surface for bearing the circuit board to be assembled; the first clamping assembly comprises at least two first clamping members 2 which can be relatively approached or moved away along a first direction, so as to clamp the circuit board at two opposite sides along the first direction; the second clamping assembly comprises at least two second clamping members 3 which can be relatively approached or moved away along a second direction, so as to clamp the circuit board at two opposite sides along the second direction; the second clamping member 3 can be raised and lowered to a first height position or a second height position along a third direction; when the second clamping member 3 is at the first height position, the second clamping member 3 avoids the circuit board, and when the second clamping member 3 is at the second height position, the second clamping member 3 can clamp the circuit board; the first direction and the second direction are both located on the bearing surface, and the third direction is perpendicular to the bearing surface.

[0076] It should be noted that the first direction and the second direction mentioned in this specific embodiment can be perpendicular to each other, or the angle between the first direction and the second direction can be greater than 0° and less than 90°, which is determined according to actual conditions and will not be elaborated here.

[0077] The first height position and the second height position mentioned in this specific embodiment are not fixed heights, but height positions that can be adjusted according to actual conditions to accommodate circuit boards of different thicknesses.

[0078] During actual use, first, it is necessary to adjust the first clamping member 2 and the second clamping member 3 to a position avoiding the preset clamping position of the circuit board, at which time the second clamping member 3 is located at the first height position; then the circuit board is loaded to the preset clamping position of the bearing surface; at least two first clamping members 2 are controlled to be relatively close to each other to clamp the circuit board along the first direction; at least two second clamping members 3 are controlled to descend to the second height position, and at least two second clamping members 3 are made relatively close to each other to clamp the circuit board along the second direction to fix the circuit board.

[0079] In this specific embodiment, at least two first clamping members 2 can be relatively close to or far away from each other, and at least two second clamping members 3 can be relatively close to or far away from each other, which can be applicable to the fixing of circuit boards of different sizes and avoid frequent replacement of the fixing device. In addition, the second clamping assembly in this specific embodiment can be raised and lowered between the first height position and the second height position. In actual use, it can avoid the height position where the circuit board is located, and can be applicable to the situation where the circuit board is slidingly loaded, avoiding interference with the circuit board, and further effectively protecting the circuit board; at the same time, it avoids the additional setting of the circuit board lifting or transfer equipment, and can effectively simplify the overall structure of the fixing device for circuit board assembly. In addition, the first clamping assembly and the second clamping assembly clamp and fix the circuit board from different directions, which can effectively improve the stability of the circuit board fixation and avoid the circuit board from shifting.

[0080] On the basis of the above embodiments, the first clamping assembly can include a first clamping member 2, at least two U-shaped connecting members 4, two movable members 6 and a first bidirectional screw rod 7, wherein the first clamping member 2 is provided with a first clamping surface for contacting the circuit board; at least two U-shaped connecting members 4 are arranged on both sides of the mounting base 1 along the first direction, and one side wall of the U-shaped connecting member 4 is connected to the first clamping member 2; two movable members 6 are arranged on the side of the mounting base 1 away from the bearing surface, and the other side wall of the U-shaped connecting member 4 is connected to the movable member 6; one end of the first bidirectional screw rod 7 is threadedly connected to one of the movable members 6, and the other end of the first bidirectional screw rod 7 is threadedly connected to the other movable member 6.

[0081] like Figure 3 , Figure 4 As shown, four U-shaped connecting members 4 are provided, combined with Figure 1 As shown, four U-shaped connectors 4 are arranged at four angles of the mounting base 1, and one side wall of the U-shaped connector 4 is located on the upper surface of the mounting base 1, and the other side wall of the U-shaped connector 4 is located on the lower surface of the mounting base 1; a movable groove 5 is provided on the lower surface of the mounting base 1, and a movable part 6 is movably arranged in the movable groove 5; specifically, the movable groove 5 can be matched with the movable part 6 to limit the moving direction and moving distance of the movable part 6.

[0082] During actual use, by controlling the first bidirectional screw rod 7 to rotate forward, the two movable parts 6 will be relatively close to each other, thereby driving the relatively arranged first clamping parts 2 to be relatively close to each other; controlling the first bidirectional screw rod 7 to rotate reversely will make the two movable parts 6 relatively close to each other, thereby driving the relatively arranged first clamping parts 2 to be relatively close to each other.

[0083] In this specific embodiment, the rotation of the first bidirectional screw rod 7 can be adjusted manually or driven by a driving member. The specific rotation is determined according to actual conditions and will not be elaborated here.

[0084] In this specific embodiment, by setting a U-shaped connecting member 4, the movable member 6 and the first bidirectional screw rod 7 are both located on the lower side of the mounting base 1, which can effectively benefit the space under the mounting base 1 and make the structural layout more reasonable; in addition, by controlling the rotation of the first bidirectional screw rod 7, the relatively arranged first clamping member 2 is controlled to be relatively close or far away, the structure is simple and the control process is convenient.

[0085] In a specific embodiment, the second clamping assembly can include a second clamping member 3, a second bidirectional screw rod 12, at least two adjusting members 11, a first telescopic member 14, a fixing rod 15 and a first elastic member 17, wherein the second clamping member 3 has a second clamping surface in contact with the side surface of the circuit board along the second direction and a third clamping surface in contact with the upper surface of the circuit board; one end of the second bidirectional screw rod 12 is threadedly connected to one of the second clamping members 3, and the other end of the second bidirectional screw rod 12 is threadedly connected to the other second clamping member 3; the adjusting member 11 is arranged on the second bidirectional screw rod Two ends of the rod 12; one end of the first telescopic member 14 is connected to the second clamping member 3, and the other end of the first telescopic member 14 is connected to the adjusting member 11; one end of the fixed rod 15 passes through the adjusting member 11 and is fixed to the U-shaped connecting member 4, and the other end of the fixed rod 15 is set as a limiting protrusion 16; the adjusting member 11 can slide along the fixed rod 15 to make the second clamping member 3 rise to the first height position; one end of the first elastic member 17 abuts against the limiting protrusion 16, and the other end abuts against the adjusting member 11; under the elastic force of the first elastic member 17, the second clamping member 3 is located at the second height position.

[0086] Combination Figure 2 , Figure 6 As shown, four second clamping members 3 are provided, and the four clamping members are divided into two groups and are arranged at different positions of the circuit board; specifically, the second clamping member 3 can be connected to the second bidirectional screw rod 12 through a movable connecting block 10, and the movable connecting block 10 is provided with a threaded hole for cooperating with the second bidirectional screw rod 12.

[0087] In the natural state, under the action of the first elastic member 17, the adjusting member 11 contacts the U-shaped connecting member 4, so that the first clamping member 2 is in the second height position; when the first clamping member 2 needs to be raised to the first height position, the elastic force of the first elastic member 17 can be overcome to lift the adjusting member 11 upward. Specifically, it can be operated manually or driven to rise by a related driving member. The specific operation is determined according to the actual situation and will not be elaborated here.

[0088] In actual use, first, it is necessary to adjust the distance between the second clamping members 3 that are arranged oppositely, and rotate the second bidirectional screw 12 in the forward direction to increase the distance between the second clamping members 3 that are arranged oppositely, until the distance between the second clamping members 3 that are arranged oppositely is greater than the maximum size of the circuit board to be assembled in the second direction; then control the adjusting member 11 to overcome the elastic force of the first elastic member 17 to drive the second clamping member 3 to rise to the first height position to avoid the circuit board in the loading process; when the circuit board is loaded to the preset clamping position, release the adjusting member 11, and under the action of the first elastic force, the second clamping member 3 drops to the second height position, and rotate the second bidirectional screw in the reverse direction to clamp the circuit board in the second direction; at this time, the second clamping surface is in contact with the side surface of the circuit board, and the third clamping surface is in contact with the upper surface of the circuit board. After the circuit board is assembled, control the adjusting member 11 to overcome the elastic force of the first elastic member 17 to drive the second clamping member 3 to rise to the first height position; rotate the second bidirectional screw 12 in the forward direction to make the distance between the second clamping members 3 that are arranged oppositely greater than the maximum size of the circuit board to be assembled in the second direction.

[0089] The structure of the second clamping assembly in this specific embodiment is simple and easy to operate. In addition, by providing the first elastic member 17 in this specific embodiment, a certain elastic pressure is provided for the circuit board when the circuit board is clamped, which can effectively improve the stability of the circuit board clamping. On the other hand, the adjustment member 11 in this specific embodiment can be adjusted manually, which is conducive to reducing costs. The provision of the first telescopic member 14 can prevent the second clamping member 3 from rotating during the rotation of the second bidirectional screw rod 12, which is conducive to improving the structural stability of the second clamping member 3.

[0090] On the basis of the above embodiments, a first rotating operating part 8 can be provided at one axial end of the first bidirectional screw 7, and the outer surface of the first rotating operating part 8 is provided with a first anti-slip pattern; a first limiting member 9 is provided at the other axial end of the first bidirectional screw 7 to limit the axial movement range of the first clamping member 2 relative to the first bidirectional screw 7; the second bidirectional screw 12 is provided with a second rotating operating part 13, and the second rotating operating part 13 is located between two adjacent second clamping members 3 in the axial direction of the second bidirectional screw 12, and the outer surface of the second rotating operating part 13 is provided with a second anti-slip pattern.

[0091] In this specific embodiment, by providing the first rotating operating part 8 and the second rotating operating part 13, manual rotation of the first bidirectional screw rod 7 and the second bidirectional screw rod 12 can be achieved, and manual operation can be achieved, which is beneficial to reducing costs and simplifies the structural composition of the first clamping assembly and the second clamping assembly; in addition, in this specific embodiment, the outer surface of the first rotating groove portion is provided with a first anti-slip texture, and the outer surface of the second rotating groove portion is provided with a second anti-slip texture, which can effectively avoid slipping.

[0092] It should be noted that although the above embodiment provides an embodiment for manually rotating the first bidirectional screw rod 7 and the second bidirectional screw rod 12, considering the assembly efficiency of the circuit board, a related driving member can be provided to drive the first bidirectional screw rod 7 and the second bidirectional screw rod 12 to rotate automatically. The specific driving member is determined based on actual conditions and will not be elaborated here.

[0093] In a specific embodiment, taking into account the actual loading process of the circuit board, in order to facilitate the loading of the circuit board and improve the assembly quality at the same time, the circuit board assembly fixing device can also include a pushing component 34 and a cleaning component 35, wherein the pushing component 34 is arranged on one side of the mounting base 1, and the pushing component 34 is used to push the circuit board to be assembled to a preset clamping position; the cleaning component 35 is arranged on the mounting base 1 and is located on the loading side of the first clamping component, and the cleaning component 35 is used to clean dust on the surface of the circuit board.

[0094] The pushing assembly 34 provided in this specific embodiment can be set to a structure with a movable end, and the movable end can be moved along the circuit board loading direction, or the pushing assembly 34 can be set to other structural forms that meet the requirements; the cleaning assembly 35 in this specific embodiment can clean the dust on the surface of the circuit board by negative pressure vacuuming, or sweeping, or blowing, or electrostatic dust removal, which is determined according to actual conditions and will not be elaborated here.

[0095] In this specific embodiment, by providing a pushing component 34, the circuit board is conveniently pushed to the preset clamping position, thereby simplifying the operation of transferring the circuit board to the preset clamping position; in addition, by providing a cleaning component 35, the dust on the surface of the circuit board can be effectively cleaned to prevent the dust on the surface of the circuit board from affecting the assembly; at the same time, it is also conducive to realizing dust-free environment assembly, and is conducive to realizing the assembly of circuit boards that require a dust-free assembly environment.

[0096] In a specific embodiment, the pusher assembly 34 may include a base 20, a sliding member 25, a second telescopic member 21, a push rod 22, and a second elastic member 27, wherein the base 20 is provided with a guide slot 24, the length direction of which extends along the feeding direction of the circuit board; the sliding member 25 is slidably disposed in the guide slot 24; Fig.10As shown, a guide rod 26 for cooperating with the guide slot 24 can be provided on the sliding member 25 to limit the sliding direction of the sliding member 25 in the guide slot 24. One end of the second telescopic member 21 is connected to the sliding member 25, and the other end is connected to the push rod 22; the other end of the push rod 22 is provided with a push plate 23 for contacting the circuit board; one end of the second elastic member 27 abuts against the push rod 22, and the other end abuts against the sliding member 25.

[0097] During actual use, when the circuit board needs to be pushed to the preset clamping position, first press the push rod 22 downward to compress the second telescopic member 21, so that the push rod 22 drops to an appropriate height, push the push rod 22, and the sliding member 25 moves in the guide groove until the push plate 23 contacts the circuit board, and continue to push the push rod 22 until the circuit board moves to the preset clamping position and stops pushing forward; pull the push rod 22 back in the opposite direction, and when the push rod 22 is pulled back to the initial position, release the push rod 22, and under the action of the second elastic member 27, the push rod 22 rises to a preset height.

[0098] The push assembly 34 provided in this specific embodiment can adjust the height of the push rod 22 according to the height position of the circuit board during actual use to adapt to the loading of circuit boards of different thicknesses; in addition, in this specific embodiment, the moving direction of the push rod 22 is limited by the cooperation of the guide groove 24 and the sliding member 25, which can effectively ensure the accuracy of the loading path of the circuit board during the loading process and avoid deflection and damage to the circuit board.

[0099] On the basis of the above embodiment, the cleaning component 35 can include a cleaning frame 28, a cleaning piece 29, a third telescopic piece 32 and a third elastic piece 33, wherein a dust suction pipe 31 is connected to the top of the cleaning frame 28, and a fan for providing negative pressure is arranged in the cleaning pipe; a dust suction hole 30 is arranged on the side of the cleaning frame 28 facing the bearing surface; the cleaning piece 29 is arranged on the side of the cleaning frame 28 facing the bearing surface, and the cleaning piece 29 is used to contact the circuit board to clean the dust on the surface of the circuit board; specifically, the cleaning piece 29 can be set as a cleaning sponge piece or a cleaning brush, which is determined according to actual conditions and will not be elaborated here; one end of the third telescopic piece 32 is connected to the mounting base 1, and the other end is connected to the cleaning frame 28; one end of the third elastic piece 33 abuts against the mounting base 1, and the other end abuts against the cleaning frame 28.

[0100] like Figure 1As shown, the cleaning component 35 is arranged at the feeding end of the first clamping component. In actual use, when the pushing component 34 pushes the circuit board to the preset clamping position, the circuit board will pass through the cleaning member 29 and the bottom of the cleaning frame 28. When the circuit board passes through the cleaning member 29 and the bottom of the cleaning frame 28, the cleaning member 29 cleans the dust, impurities, etc. on the surface of the circuit board. A dust suction pipeline 31 is arranged in the cleaning frame 28. Under the action of negative pressure, the dust and impurities on the surface of the circuit board enter the cleaning frame 28 through the equal-diameter dust suction holes 30 and are sucked into the dust suction pipeline 31.

[0101] It should be noted that a control button for controlling the start and stop of the fan in the dust suction pipeline 31 can be provided to facilitate the control of the operation of the cleaning component 35 .

[0102] In this specific embodiment, the specific extension amount of the third telescopic member 32 can be manually controlled, or the driving member can drive the third telescopic member 32 to automatically extend and retract, which is specifically determined according to actual conditions.

[0103] In this specific embodiment, by setting a cleaning component 35 at the feeding end of the feeding path of the circuit board, the circuit board can be cleaned during the feeding process of the circuit board, and dust, impurities, etc. on the surface of the circuit board can be effectively removed, which is beneficial to the next assembly operation and improves the assembly quality; in addition, by setting the cleaning component 35 in this specific embodiment, a dust-free operating environment on the surface of the circuit board can be achieved, which can be suitable for circuit board assembly with dust-free requirements; in addition, in this specific embodiment, dust, magazines, etc. can be effectively protected from being damaged while dust removal is achieved by cleaning the cleaning member 29 or the dust suction hole 30 using negative pressure. In this specific embodiment, by adjusting the telescopic amount of the third telescopic member 32, the distance between the cleaning member 29 and the cleaning frame 28 and the bearing surface can be adjusted, which can be suitable for circuit boards of different thicknesses.

[0104] On the basis of the above embodiments, in order to achieve a dust-free operating environment, the circuit board assembly fixing device may further include a protective cover, which is mounted on the mounting base 1 and is disposed on the outside of the first clamping assembly and the second clamping assembly. The protective cover is provided with ventilation holes, and a filtering dust removal structure is provided at the ventilation holes.

[0105] By providing a protective cover, the circuit board assembly environment is isolated from the external environment, which is conducive to assembly in a dust-free environment.

[0106] On the basis of the above embodiment, the cleaning component 35 can also include a first shooting component, a first power component and a first controller; the first shooting component is arranged on the side of the cleaning frame 28 facing the incoming side of the circuit board, and the first shooting component is used to obtain first image information of the circuit board and transmit the first image information to the first controller. The first controller obtains the thickness information of the circuit board according to the first image information, and controls the first power component to drive the third telescopic component 32 to extend and retract according to the thickness information.

[0107] During actual use, it is first necessary to obtain the first image information of the circuit board on the incoming side through the first shooting component, and transmit the first image information to the first controller. The first controller obtains the thickness information of the circuit board according to the first image information, and controls the action of the first power component according to the thickness information. The first power component drives the third telescopic component 32 to extend and retract, and adjusts the height of the cleaning component 29 and the cleaning frame 28 from the bearing surface until the height of the cleaning component 29 and the cleaning frame 28 from the bearing surface meets the requirements.

[0108] In this specific embodiment, by providing a first camera and a first controller, the height of the cleaning member 29 and the cleaning frame 28 from the bearing surface can be automatically adjusted according to the thickness of the circuit board, thereby avoiding affecting the cleaning effect of the circuit board due to the height of the cleaning member 29 and the cleaning frame 28 from the bearing surface not meeting the requirements, or affecting the normal loading of the circuit board due to the height of the cleaning member 29 and the cleaning frame 28 from the bearing surface being too low, which is beneficial to improving the assembly efficiency of the circuit board.

[0109] On the basis of the above embodiment, the first clamping component can also include a first pressure detecting component, which is arranged on the surface of the first clamping component 2 for contacting the circuit board; the second clamping component can also include a second pressure detecting component, which is arranged on the surface of the second clamping component 3 for contacting the circuit board; when the second clamping component 3 is provided with multiple surfaces for contacting the circuit board, the second pressure detecting component can be arranged on each surface in contact with the circuit board.

[0110] During actual use, when the circuit board is clamped and fixed, the clamping force of the first clamping member 2 on the circuit board can be judged by the first pressure information detected by the first pressure detection member. When the first pressure information is within the preset first pressure range, the first clamping member 2 is controlled to stop moving to maintain an appropriate clamping force; when the first pressure information is greater than the maximum value of the preset first pressure range, the relatively set first clamping member 2 needs to be controlled to be relatively far away to avoid damaging the circuit board due to excessive clamping force; when the first pressure information is less than the minimum value of the preset first pressure range, the relatively set first clamping member 2 needs to be controlled to be relatively close to avoid affecting the clamping stability due to excessive clamping force.

[0111] On the other hand, the clamping force of the second clamping member 3 on the circuit board can be judged by the second pressure information detected by the second pressure detecting member. When the second pressure information is within the preset second pressure range, the second clamping member 3 is controlled to stop moving to maintain an appropriate clamping force. When the second pressure information is greater than the maximum value of the preset second pressure range, the relatively arranged second clamping members 3 need to be controlled to be relatively far away to avoid damaging the circuit board due to excessive clamping force. When the second pressure information is less than the minimum value of the preset second pressure range, the relatively arranged second clamping members 3 need to be controlled to be relatively close to each other to avoid affecting the clamping stability due to excessive clamping force.

[0112] In this specific embodiment, by providing the first pressure detection component and the second pressure detection component, the clamping force of the first clamping component 2 and the second clamping component 3 on the circuit board can be obtained in time, which is beneficial to control the clamping force on the circuit board to maintain within an appropriate range, avoiding excessive clamping force to damage the circuit board, or too small clamping force to affect the stability of the circuit board fixation.

[0113] like Figure 5 As shown, the surface of the first clamping member 2 for contacting the circuit board is provided with a mounting groove 18 and a rolling member 19 rotatably arranged in the mounting groove 18; the outer surface of the rolling member 19 is provided with a first soft protective layer; the surface of the second clamping member 3 for contacting the circuit board is provided with a second soft protective layer.

[0114] In actual use, when loading the circuit board to the preset clamping position, it is inevitable that the side surface of the circuit board will contact the first clamping surface in the first clamping member 2. By setting a rolling member 19 on the first clamping surface, there is rotational friction between the circuit board and the rolling member 19, which can effectively reduce the friction force on the circuit board during the loading process and reduce the wear of the circuit board.

[0115] In addition, in this specific embodiment, the outer surface of the rolling member 19 is provided with a first soft protective layer, which can effectively avoid scratching the circuit board; the surface of the second clamping member 3 for contacting the circuit board is provided with a second soft protective layer, which can avoid damage to the circuit board during clamping the circuit board.

[0116] On the basis of the above-mentioned embodiment, the fixing device for circuit board assembly may further include a detection component, which includes a second camera for acquiring second image information of the circuit board to be assembled, a third camera for acquiring third image information of the circuit board, and a second controller; the second camera sends the second image information to the second controller, and the second controller obtains appearance information and size information of the circuit board according to the second image information; the third camera sends the third image information to the second controller, and the second controller obtains position information of the fixed circuit board according to the third image information.

[0117] It should be noted that the second camera in this specific embodiment is mainly used to capture the second image information of the circuit board before assembly or before loading to the preset clamping position. The second controller can obtain the appearance information and size information of the circuit board based on the second image information to avoid the wrong model of the circuit board or avoid assembling the damaged circuit board. When the appearance information and size information of the circuit board meet the requirements, the next step can be continued; when at least one of the appearance information and size information of the circuit board does not meet the requirements, the circuit board needs to be replaced.

[0118] The third shooting member in this specific embodiment is mainly used to shoot the third image information of the circuit board that has been clamped and fixed by the first clamping component and the second clamping component. The second controller obtains the specific position information of the circuit board on the bearing surface based on the third image information to avoid errors in the fixed position of the circuit board. When the position information of the circuit board obtained by the second controller based on the third image information meets the requirements, the next step of operation can be continued; when the specific position information of the circuit board on the bearing surface obtained by the second controller based on the third image information does not meet the requirements, the position of the circuit board needs to be adjusted.

[0119] In this specific embodiment, by setting up the second and third photographing elements, the appearance information and size information of the circuit board are detected, which can effectively avoid the circuit board model error and avoid assembling the damaged circuit board. In addition, the fixed position of the circuit board is detected, which can effectively improve the quality and assembly accuracy of the circuit board assembly.

[0120] On the basis of the above embodiments, in order to adapt to the fixation of circuit boards of different shapes, a first arc-shaped groove and a second arc-shaped groove can be set on the mounting base 1, and the first clamping component is provided with a first slider for cooperating with the first arc-shaped groove and sliding along the first arc-shaped groove, and the first slider can be fixed to any position of the first arc-shaped groove to adjust the clamping direction of the first clamping component; the second clamping component is provided with a second slider for cooperating with the second arc-shaped groove and sliding along the second arc-shaped groove, and the second slider can be fixed to any position of the second arc-shaped groove to adjust the clamping direction of the second clamping component.

[0121] During actual use, when the shape of the circuit board changes, for example, the circuit board changes from the original rectangle to an irregular shape, and the surface suitable for clamping in the irregular shape is not suitable for the clamping method in which the first direction is perpendicular to the second direction; the installation angle of the first clamping assembly can be changed by adjusting the position of the first slider of the first clamping assembly in the first arc-shaped slide groove, until the clamping direction of the first clamping assembly can just match the surface that can be used for clamping in the irregular-shaped circuit board; for other surfaces that can be used for clamping in the irregular-shaped circuit board, the position of the second slider of the second clamping assembly is adjusted in the second arc-shaped slide groove, and then the clamping direction of the second clamping assembly is adjusted until the clamping direction of the second clamping assembly can just match other surfaces that can be used for clamping in the irregular-shaped circuit board.

[0122] The circuit board assembly fixing device provided in this specific embodiment can be applicable to circuit boards of different shapes. When the shape of the circuit board changes, the clamping directions of the first clamping component and the second clamping component can be adjusted to clamp the circuit board at different positions to adapt to the fixation of circuit boards of different shapes.

[0123] In a specific embodiment, the circuit board assembly fixing device may further include a flatness detection structure, which is used to detect the flatness of a bearing surface of the mounting base 1 for bearing the circuit board to be assembled. Specifically, the flatness detection structure may be set as a laser sensor, a photoelectric sensor, etc.

[0124] During actual use, before the circuit board is loaded to the preset clamping position, the flatness of the bearing surface needs to be detected by the flatness detection structure. When the flatness of the bearing surface meets the requirements, the loading step of the circuit board can be controlled to start; when the flatness of the bearing surface does not meet the requirements, it is necessary to check the specific state of the bearing surface, whether there are obstacles or protrusions or depressions on the surface, etc., and the flatness of the bearing surface needs to be processed until the flatness of the bearing surface meets the requirements.

[0125] In this specific embodiment, by detecting the flatness of the bearing surface, the flatness of the circuit board when it is fixed can be effectively guaranteed, thereby ensuring the accuracy of the fixed position and fixed angle of the circuit board and improving the subsequent assembly quality; in addition, it can effectively prevent obstacles from damaging the surface of the circuit board when they are located at the bottom of the circuit board, thereby effectively protecting the circuit board.

[0126] In addition to the circuit board assembly fixture provided in the above embodiment, the present invention also provides a circuit board assembly system including the circuit board assembly fixture disclosed in the above embodiment. The other parts of the circuit board assembly system can refer to the prior art.

[0127] Specifically, the circuit board assembly system provided in this specific embodiment may include an assembly device, a finished product inspection device and the above-mentioned circuit board assembly fixing device. During the actual assembly process, first, the circuit board is fixed by the circuit board assembly fixing device, and then the assembly device assembles other components to the circuit board. After the assembly is completed, the finished product inspection device inspects the assembled circuit board.

[0128] The circuit board assembly system provided in this specific embodiment fixes the circuit board by means of a circuit board assembly fixing device before actual assembly, which can effectively improve the fixing stability and fixing position accuracy of the circuit board, thereby facilitating the improvement of subsequent assembly quality and the qualified rate of finished circuit boards.

[0129] It should also be noted that, in this specification, 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 "comprise", "include" 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. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0130] The above is a detailed introduction to the circuit board assembly fixing device and circuit board assembly system provided by the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A fixing device for circuit board assembly, characterized in that: include: A mounting base (1) provided with a bearing surface for bearing a circuit board to be assembled; A first clamping assembly comprising at least two first clamping members (2) that can move relatively closer or farther away along a first direction, so as to clamp the circuit board at two opposite sides along the first direction; The second clamping assembly comprises at least two second clamping members (3) that can be relatively moved closer or farther away along a second direction, so as to clamp the circuit board at two opposite sides along the second direction; the second clamping members (3) can be raised and lowered to a first height position or a second height position along a third direction; When the second clamping member (3) is located at the first height position, the second clamping member (3) avoids the circuit board; when the second clamping member (3) is located at the second height position, the second clamping member (3) can clamp the circuit board; The first direction and the second direction are both located on the carrying surface, the first direction is not parallel to the second direction, and the third direction is perpendicular to the carrying surface.

2. The fixing device for circuit board assembly according to claim 1, wherein: The first clamping assembly comprises: A first clamping member (2) provided with a first clamping surface for contacting the circuit board; At least two U-shaped connecting members (4), at least two of the U-shaped connecting members (4) are arranged on both sides of the mounting base (1) along the first direction, and one side wall of the U-shaped connecting member (4) is connected to the first clamping member (2); Two movable parts (6) are arranged on a side of the mounting base (1) facing away from the bearing surface, and the other side wall of the U-shaped connecting part (4) is connected to the movable parts (6); A first bidirectional screw rod (7), one end of which is threadedly connected to one of the movable parts (6), and the other end of which is threadedly connected to the other movable part (6).

3. The fixing device for circuit board assembly according to claim 2, wherein: The second clamping assembly comprises: A second clamping member (3), the second clamping member (3) having a second clamping surface in contact with the side surface of the circuit board along the second direction and a third clamping surface in contact with the upper surface of the circuit board; a second bidirectional screw rod (12), one end of the second bidirectional screw rod (12) being threadedly connected to one of the second clamping members (3), and the other end of the second bidirectional screw rod (12) being threadedly connected to the other second clamping member (3); At least two adjusting members (11), the adjusting members (11) being arranged at both ends of the second bidirectional screw rod (12); a first telescopic member (14), one end of the first telescopic member (14) being connected to the second clamping member (3), and the other end of the first telescopic member (14) being connected to the adjusting member (11); a fixing rod (15), one end of the fixing rod (15) passing through the adjusting member (11) and fixed to the U-shaped connecting member (4), and the other end of the fixing rod (15) being provided as a limiting protrusion (16); the adjusting member (11) being slidable along the fixing rod (15) so as to raise the second clamping member (3) to the first height position; A first elastic member (17) has one end abutting against the limiting protrusion (16) and the other end abutting against the adjusting member (11); under the elastic force of the first elastic member (17), the second clamping member (3) is located at a second height position.

4. The fixing device for circuit board assembly according to claim 3, wherein: A first rotation operating portion (8) is provided at one axial end of the first bidirectional screw (7), and a first anti-slip pattern is provided on the outer surface of the first rotation operating portion (8); a first position limiting member (9) is provided at the other axial end of the first bidirectional screw (7) to limit the axial movement range of the first clamping member (2) relative to the first bidirectional screw (7); The second bidirectional screw (12) is provided with a second rotation operating portion (13), the second rotation operating portion (13) is located between two adjacent second clamping members (3) in the axial direction of the second bidirectional screw (12), and the outer surface of the second rotation operating portion (13) is provided with a second anti-slip pattern.

5. The fixing device for circuit board assembly according to any one of claims 1 to 4, characterized in that: Also includes: A pusher assembly (34) is provided on one side of the mounting base (1), and the pusher assembly (34) is used to push the circuit board to be assembled to a preset clamping position; A cleaning component (35) is arranged on the mounting base (1) and located on the feeding side of the first clamping component, and the cleaning component (35) is used to clean dust on the surface of the circuit board.

6. The fixing device for circuit board assembly according to claim 5, wherein: The pusher assembly (34) comprises: The base (20) is provided with a guide slot (24), wherein the length direction of the guide slot (24) extends along the feeding direction of the circuit board; A sliding member (25) is slidably disposed in the guide slot (24); A second telescopic member (21), one end of which is connected to the sliding member (25); a push rod (22), one end of the push rod (22) being connected to the other end of the second telescopic member (21), and the other end of the push rod (22) being provided with a push plate (23) for contacting the circuit board; A second elastic member (27), one end of the second elastic member (27) abuts against the push rod (22), and the other end abuts against the sliding member (25).

7. The fixing device for circuit board assembly according to claim 5, wherein: The cleaning component (35) comprises: A cleaning frame (28), wherein the top of the cleaning frame (28) is connected to a dust suction pipeline (31), wherein a fan for providing negative pressure is provided in the cleaning pipeline; a dust suction hole (30) is provided on a side of the cleaning frame (28) facing the bearing surface; a cleaning member (29) disposed on a side of the cleaning frame (28) facing the bearing surface, the cleaning member (29) being used to contact the circuit board to clean dust on the surface of the circuit board; A third telescopic member (32), one end of which is connected to the mounting base (1) and the other end of which is connected to the cleaning frame (28); The third elastic member (33) has one end abutting against the mounting base (1) and the other end abutting against the cleaning frame (28).

8. The fixing device for circuit board assembly according to claim 7, wherein: The cleaning assembly (35) further includes a first shooting component, a first power component, and a first controller; The first photographing member is arranged on a side of the cleaning frame (28) facing the incoming side of the circuit board, and the first photographing member is used to obtain first image information of the circuit board and transmit the first image information to the first controller. The first controller obtains thickness information of the circuit board based on the first image information and controls the first power member to drive the third telescopic member (32) to extend and retract based on the thickness information.

9. The fixing device for circuit board assembly according to any one of claims 1 to 4, characterized in that: The first clamping assembly further comprises a first pressure detection member, which is arranged on a surface of the first clamping member (2) for contacting the circuit board; the second clamping assembly further comprises a second pressure detection member, which is arranged on a surface of the second clamping member (3) for contacting the circuit board; The surface of the first clamping member (2) for contacting the circuit board is provided with a mounting groove (18) and a rolling member (19) rotatably arranged in the mounting groove (18); the outer surface of the rolling member (19) is provided with a first soft protective layer; the surface of the second clamping member (3) for contacting the circuit board is provided with a second soft protective layer; The circuit board assembly fixture further includes a detection component, the detection component including a second camera for acquiring second image information of the circuit board to be assembled, a third camera for acquiring third image information of the circuit board, and a second controller; the second camera transmits the second image information to the second controller, and the second controller obtains appearance information and size information of the circuit board based on the second image information; the third camera transmits the third image information to the second controller, and the second controller obtains position information of the fixed circuit board based on the third image information; The fixing device for circuit board assembly further comprises a protective cover, the protective cover being mounted on the mounting base (1), and the protective cover being arranged outside the first clamping assembly and the second clamping assembly, the protective cover being provided with ventilation holes, and a filtering dust removal structure being provided at the ventilation holes; The mounting base (1) is provided with a first arc-shaped slide groove and a second arc-shaped slide groove, the first clamping assembly is provided with a first slider for cooperating with the first arc-shaped slide groove and sliding along the first arc-shaped slide groove, the first slider can be fixed to any position of the first arc-shaped slide groove to adjust the clamping direction of the first clamping assembly; the second clamping assembly is provided with a second slider for cooperating with the second arc-shaped slide groove and sliding along the second arc-shaped slide groove, the second slider can be fixed to any position of the second arc-shaped slide groove to adjust the clamping direction of the second clamping assembly.

10. A circuit board assembly system, characterized in that: The fixing device for assembling a circuit board comprises the fixing device for assembling a circuit board according to any one of claims 1 to 9.

Images