A Visual Inspection Device for Solder Joints of Precision Protectors

Abstract

The present invention relates to the field of vision detection facilities, and particularly to a visual detection device for solder joints of a precision protector, which includes a base. A moving member is installed at the upper end of the base. A supporting member is installed at the upper end of the moving member. A clamping member is installed at the end of the supporting member. A photographing member is installed at the rear edge of the upper end of the base. The photographing member is located above the side of the clamping member and is in contact with the supporting member. An L-shaped frame is fixedly installed on the side of the base. A display screen is fixedly installed at the end of the L-shaped frame. The display screen is connected to the photographing member. Seat feet are fixedly installed at the corners of the lower end surface of the base. The present invention improves the detection efficiency, improves the detection accuracy during detection, and ensures that there is no zoom phenomenon during the photographing process, ensuring a clear photographed image.

Description

Technical Field

[0001] The present invention relates to the field of vision detection facilities, and particularly to a visual detection device for solder joints of a precision protector. Background Art

[0002] During the process of visually inspecting the solder joints of electrical components on some protector circuit boards, a camera is often used to photograph and magnify the solder joints on the circuit board and display them on a display screen for the convenience of inspectors. However, in the existing shooting process, the circuit board is mostly fixedly placed under the camera for shooting. In this shooting method, only the solder joints on one circuit board can be photographed and inspected at a time, and the number of shots is small, resulting in low detection efficiency. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies in the background art and propose a visual detection device for solder joints of a precision protector.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a visual detection device for solder joints of a precision protector, including a base. A moving member is installed at the upper end of the base. A supporting member is installed at the upper end of the moving member. A clamping member is installed at the end of the supporting member. A photographing member is installed at the rear edge of the upper end of the base. The photographing member is located above the side of the clamping member. The photographing member is in contact with the supporting member. An L-shaped frame is fixedly installed on the side of the base. A display screen is fixedly installed at the end of the L-shaped frame. The display screen is connected to the photographing member. Seat feet are fixedly installed at the corners of the lower end surface of the base.

[0005] Preferably, the moving member includes a guide seat arranged at the front part above the base. Two groups of guide frames are respectively fitted and penetrated through the front and rear end faces of the guide seat. Fixed frames are fixedly installed on the end faces of the two groups of guide frames. The lower end of the fixed frame is fixedly connected to the upper end of the base. Servo motors are fixedly installed at the corners of the upper end surface of the base. A driving shaft is fixedly installed at the output end of the servo motor. A gear is coaxially fixedly installed on the outer surface of the driving shaft. A plurality of tooth blocks are linearly and arrayedly fixedly installed on the lower end surface of the guide seat. The tooth blocks are engaged with the gear. Two groups of shaft frames are symmetrically installed on the upper end surface of the base. The end of the shaft frame is rotatably connected to the driving shaft. The gear is located between the two groups of shaft frames.

[0006] Preferably, the support fixture includes two groups of bearing frames symmetrically and fixedly installed in the middle of the upper end of the guide base. At the edges of the opposite faces of the two groups of bearing frames, two groups of connecting frames are respectively fixedly installed. A ball sleeve is embedded between the two groups of connecting frames. A connecting ball is fitted and installed inside the ball sleeve. A protruding column is penetrated and embedded at the central position inside the connecting ball. Elastic mounts are provided on the opposite faces of the two groups of bearing frames with two groups of chucks. Both groups of chucks penetrate through the outer surface of the ball sleeve. The chucks are pressed against the connecting ball. A rubber pad is provided at the end face where the chuck presses against the connecting ball.

[0007] Preferably, two groups of guiding columns are respectively penetrated and installed through the opposite faces of the two groups of bearing frames. One end of each guiding column is fixedly connected to the chuck. A tightening spring is wound around the outer side of the guiding column. The tightening spring is located between the chuck and the bearing frame. A limiting cap is coaxially embedded at the other end of the guiding column. A slider extends from the side of the chuck. A sliding groove is penetrated and opened on the side of the connecting frame. The slider fits inside the sliding groove.

[0008] Preferably, a concave frame is fixedly installed at the rear end of the bearing frame located at the rear. A rotating block is fitted and installed inside the concave frame. A support plate is fixedly installed at the upper end of the rotating block. A frame is fixedly installed at the rear end of the concave frame. A disk body is elastically installed inside the frame. A bearing column is fixedly installed at the front end of the disk body. A plurality of triangular convex strips are fixedly installed in a circular array on the outer surface of the bearing column. The triangular convex strips and the bearing column both penetrate through the space between the rotating block and the concave frame.

[0009] Preferably, the bearing column and the triangular convex strips are integrally formed. A pull rod is fixedly installed at the rear end of the disk body. The pull rod penetrates through the rear end of the frame. A fixing spring is wound around the outer side of the pull rod. The fixing spring is located between the disk body and the frame. A limiting block extends from the side of the disk body. A square hole is opened on the side of the frame. The limiting block fits inside the square hole.

[0010] Preferably, the photographing member includes an upright frame fixedly installed at the rear edge of the upper end of the base. A ring sleeve is fixedly installed at the end of the upright frame. A guide rod is fitted and installed inside the ring sleeve. A fixing base is fitted and installed at the front end of the upright frame. A bearing disk is penetrated and embedded at the upper end of the fixing base. The bearing disk is fixed to the outer surface of the guide rod. A convex rib extends from the front end face of the upright frame. The convex rib penetrates through the rear end face of the fixing base. A wheel frame is fixedly installed at the lower end of the guide rod. A guide wheel is installed inside the wheel frame. The guide wheel fits on the support plate. A camera is fixedly installed at the front end of the fixing base. The camera is connected to the display screen. A pressing spring is wound around the outer side of the guide rod. The pressing spring is located between the upper end of the bearing disk and the lower end of the ring sleeve. A threaded ring is penetrated and embedded on the outer surface of the ring sleeve. A locking stud is screwed inside the threaded ring. The end of the locking stud presses against the outer surface of the guide rod.

[0011] Preferably, the clamping member includes a carrier fixedly installed at the end of the protruding column. A plurality of guide cases are fixedly installed in a linear array inside the carrier. A push rod is fitted and installed inside the plurality of guide cases. A plurality of connecting blocks are fixedly installed in a linear array on the upper end surface of the push rod. A plurality of limiting clip seats are respectively fixedly installed at the upper ends of the plurality of connecting blocks. A plurality of fixed clip seats are fixedly installed in a linear array on the upper end surface of the carrier. The fixed clip seats and the limiting clip seats are symmetrically arranged. A threaded sleeve is penetrated and embedded in the middle of the side surface of the carrier. A threaded column is screwed tightly inside the threaded sleeve. The end of the threaded column is rotatably connected to the end of the push rod. Card slots are formed at the corners of the opposite surfaces of the fixed clip seat and the limiting clip seat.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By providing the clamping member, the threaded column can be directly rotated, so that the threaded column uses the thread between it and the threaded sleeve to push the push rod, and then drives a plurality of limiting clip seats to move simultaneously, so as to adjust the distance between the opposite limiting clip seats and the fixed clip seats to adapt to the length of the circuit board. Then, a plurality of circuit boards are placed between the plurality of oppositely arranged limiting clip seats and fixed clip seats. At this time, the corners of the circuit board are fitted into the card slots. Then, the servo motor drives the gear to rotate, so that the guide seat slides on the guide frame under the meshing of the gear and the tooth block, and then drives a plurality of circuit boards to move linearly in sequence below the camera for shooting and detection. In this way, the detection of a plurality of circuit boards is carried out simultaneously, improving the detection efficiency.

[0014] 2. By providing the supporting member, the carrier can be directly turned in the front-back tilt direction or the left-right tilt direction. At this time, the connecting ball rotates in the ball sleeve. After the turning is completed, the top spring will support the two chucks, so that the turned connecting ball is fixed under the clamping of the two chucks, and then the turned carrier is fixed. When passing below the camera in sequence for shooting and detection, a plurality of circuit boards can be photographed at multiple shooting angles, avoiding the phenomenon that the shooting dead angle affects the detection accuracy due to the occlusion of the electrical components on the circuit board, thereby improving the detection accuracy during detection.

[0015] 3. After tilting the carrier in the left - right tilt direction, the bearing column fixed between the rotating block and the concave frame by the supporting spring can be withdrawn, enabling the support plate to move and be coplanar with the left - right tilted carrier. Then, loosen the locking stud to make the guide rod movable, so that the guide wheel at the end of the guide rod can be pressed against the support plate. At this time, during the movement of the guide seat driving the carrier and the support plate to move, the guide wheel will roll along the tilted support plate, enabling the camera to move up and down with the tilt angle of the carrier, ensuring that the height between the camera and the circuit board on the carrier is constant, thereby ensuring that no zoom phenomenon occurs during shooting and guaranteeing a clear shooting picture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a visual inspection device for solder joints of a precision protector of the present invention;

[0017] Figure 2 It is a schematic diagram of the moving part of a visual inspection device for solder joints of a precision protector of the present invention;

[0018] Figure 3 It is a schematic diagram of the shooting part of a visual inspection device for solder joints of a precision protector of the present invention;

[0019] Figure 4 It is a schematic diagram of the collar part of a visual inspection device for solder joints of a precision protector of the present invention;

[0020] Figure 5 It is a schematic diagram of the supporting part of a visual inspection device for solder joints of a precision protector of the present invention;

[0021] Figure 6 It is a schematic diagram of the connecting frame part of a visual inspection device for solder joints of a precision protector of the present invention;

[0022] Figure 7 It is a schematic diagram of the rear bearing frame part of a visual inspection device for solder joints of a precision protector of the present invention;

[0023] Figure 8 It is a schematic diagram of the bearing column of a visual inspection device for solder joints of a precision protector of the present invention;

[0024] Figure 9 It is a schematic diagram of the clamping part of a visual inspection device for solder joints of a precision protector of the present invention.

[0025] In the figure: 1, base; 2, pedestal foot; 3, L-shaped frame; 4, display screen; 5, moving part; 51, fixing frame; 52, guiding frame; 53, guiding base; 54, tooth block; 55, shaft frame; 56, driving shaft; 57, servo motor; 58, gear; 6, supporting and fixing part; 61, bearing frame; 62, connecting and fixing frame; 63, ball sleeve; 64, connecting ball; 65, protruding column; 66, guiding column; 67, limiting cap; 68, pressing spring; 69, chuck; 610, sliding groove; 611, sliding block; 612, supporting plate; 613, concave-shaped frame; 614, frame; 615, pull rod; 616, fixing spring; 617, disc body; 618, limiting block; 619, bearing column; 620, triangular convex strip; 621, rotating block; 7, clamping part; 71, carrier seat; 72, guiding shell; 73, push rod; 74, fixing clamp seat; 75, connecting block; 76, limiting clamp seat; 77, threaded sleeve; 78, threaded column; 79, clamping groove; 8, photographing part; 81, camera; 82, standing frame; 83, convex rib; 84, ring sleeve; 85, guiding rod; 86, pressing spring; 87, fixing seat; 88, bearing disc; 89, wheel frame; 810, guiding wheel; 811, threaded ring; 812, locking stud. Detailed implementation mode

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0027] As Figures 1-9 Shown is a visual inspection device for solder joints of a precision protector, including a base 1. A moving part 5 is installed at the upper end of the base 1. A supporting and fixing part 6 is installed at the upper end of the moving part 5. A clamping part 7 is installed at the end of the supporting and fixing part 6. A photographing part 8 is installed at the rear edge of the upper end of the base 1. The photographing part 8 is located above the side of the clamping part 7. The photographing part 8 is in contact with the supporting and fixing part 6. An L-shaped frame 3 is fixedly installed on the side of the base 1. A display screen 4 is fixedly installed at the end of the L-shaped frame 3. The display screen 4 is connected to the photographing part 8. Pedestal feet 2 are fixedly installed at the corners of the lower end surface of the base 1.

[0028] The moving member 5 includes a guide seat 53 arranged at the upper front part of the base 1. Two groups of guide frames 52 are respectively fitted and installed through the front and rear end faces of the guide seat 53. The guide frames 52 play a role in ensuring that the guide seat 53 moves linearly. Fixed frames 51 are fixedly installed on the end faces of the two groups of guide frames 52. The lower end of the fixed frame 51 is fixedly connected to the upper end of the base 1. The fixed frame 51 plays a role in fixing the guide frame 52. A servo motor 57 is fixedly installed at the corner of the upper end face of the base 1. The output end of the servo motor 57 is fixedly installed with a drive shaft 56. A gear 58 is coaxially fixedly installed on the outer surface of the drive shaft 56. A plurality of groups of tooth blocks 54 are linearly arrayed and fixedly installed on the lower end face of the guide seat 53. The tooth blocks 54 are meshed with the gear 58. Two groups of shaft frames 55 are symmetrically installed on the upper end face of the base 1. The end of the shaft frame 55 is rotatably connected to the drive shaft 56. The shaft frame 55 plays a role in strengthening the drive shaft 56. The gear 58 is located between the two groups of shaft frames 55.

[0029] The supporting member 6 includes two groups of bearing frames 61 symmetrically and fixedly installed in the middle of the upper end of the guide seat 53. Two groups of connecting frames 62 are respectively fixedly installed at the edges of the opposite faces of the two groups of bearing frames 61. A ball sleeve 63 is embedded between the two groups of connecting frames 62. A connecting ball 64 is fitted and installed inside the ball sleeve 63. The connecting frame 62 plays a role in fixing the ball sleeve 63. A protruding column 65 is embedded through the center position inside the connecting ball 64. The ball sleeve 63 plays a role in restricting the connecting ball 64. The protruding column 65 plays a role in connection. Two groups of chucks 69 are elastically installed on the opposite faces of the two groups of bearing frames 61. Both groups of chucks 69 penetrate through the outer surface of the ball sleeve 63. The chucks 69 are pressed against the connecting ball 64. A rubber pad is arranged at the end face where the chuck 69 is pressed against the connecting ball 64, which can increase the friction between the chuck 69 and the connecting ball 64 and improve the fixing force.

[0030] Two groups of orienting columns 66 are respectively fitted and installed through the opposite faces of the two groups of bearing frames 61. One end of the orienting column 66 is fixedly connected to the chuck 69. The orienting column 66 plays a role in ensuring that the chuck 69 moves linearly. A tightening spring 68 is wound around the outer side of the orienting column 66. The tightening spring 68 is located between the chuck 69 and the bearing frame 61. A limiting cap 67 is coaxially embedded at the other end of the orienting column 66. The limiting cap 67 plays a role in preventing the orienting column 66 from detaching. A slider 611 extends from the side of the chuck 69. A sliding groove 610 is penetrated and opened on the side of the connecting frame 62. The slider 611 fits inside the sliding groove 610. The slider 611 and the sliding groove 610 play a role in preventing the orienting column 66 from rotating.

[0031] At the rear end of the carrier 61 located at the rear, a concave frame 613 is fixedly installed. Inside the concave frame 613, a rotating block 621 is fitted. At the upper end of the rotating block 621, a support plate 612 is fixedly installed. The support plate 612 plays a role in supporting and guiding. The concave frame 613 and the rotating block 621 play a connecting role. At the rear end of the concave frame 613, a frame 614 is fixedly installed. Inside the frame 614, a disk body 617 is elastically installed. At the front end of the disk body 617, a bearing column 619 is fixedly installed. On the outer surface of the bearing column 619, multiple groups of triangular convex strips 620 are fixedly installed in a circular array. The bearing column 619 plays a role in carrying the triangular convex strips 620. Both the triangular convex strips 620 and the bearing column 619 pass through the space between the rotating block 621 and the concave frame 613 in a fitting manner. The triangular convex strips 620 play a role in preventing rotation between the concave frame 613 and the rotating block 621.

[0032] The bearing column 619 and the triangular convex strips 620 are integrally formed. At the rear end of the disk body 617, a pull rod 615 is fixedly installed. The pull rod 615 passes through the rear end of the frame 614 in a fitting manner. A fixing spring 616 is wound around the outer side of the pull rod 615. The pull rod 615 plays a role in facilitating the pulling of the bearing column 619. The fixing spring 616 is located between the disk body 617 and the frame 614. A limiting block 618 extends from the side surface of the disk body 617. A square hole is opened on the side surface of the frame 614. The limiting block 618 fits into the square hole. The square hole and the limiting block 618 play a role in ensuring that the bearing column 619 and the triangular convex strips 620 do not rotate.

[0033] The photographing member 8 includes a vertical frame 82 fixedly installed at the rear edge of the upper end of the base 1. At the end of the vertical frame 82, a ring sleeve 84 is fixedly installed. Inside the ring sleeve 84, a guide rod 85 is fitted. The ring sleeve 84 plays a role in ensuring the vertical up-and-down movement of the guide rod 85. At the front end of the vertical frame 82, a fixing base 87 is fitted. At the upper end of the fixing base 87, a bearing disk 88 is inserted and embedded. The bearing disk 88 is fixed to the outer surface of the guide rod 85. A convex rib 83 extends from the front end surface of the vertical frame 82. The convex rib 83 passes through the rear end surface of the fixing base 87 in a fitting manner. The convex rib 83 plays a role in ensuring that the fixing base 87 does not rotate. At the lower end of the guide rod 85, a wheel frame 89 is fixedly installed. Inside the wheel frame 89, a guide wheel 810 is installed. The wheel frame 89 plays a role in connecting the guide wheel 810. The guide wheel 810 fits on the support plate 612. At the front end of the fixing base 87, a camera 81 is fixedly installed. The fixing base 87 plays a role in connecting the camera 81. The camera 81 is connected to the display screen 4. A compression spring 86 is wound around the outer side of the guide rod 85. The compression spring 86 is located between the upper end of the bearing disk 88 and the lower end of the ring sleeve 84. A threaded ring 811 is inserted and embedded through the outer surface of the ring sleeve 84. A locking screw 812 is screwed into the threaded ring 811. The end of the locking screw 812 abuts against the outer surface of the guide rod 85. The threaded ring 811 and the locking screw 812 play a role in tightly fixing the guide rod 85.

[0034] The clamping member 7 includes a carrier base 71 fixedly installed at the end of the protruding column 65. A plurality of guide cases 72 are fixedly installed in a linear array inside the carrier base 71. A push rod 73 is fitted and installed inside the plurality of guide cases 72. The guide cases 72 serve to ensure that the push rod 73 moves in a straight line. A plurality of connecting blocks 75 are fixedly installed in a linear array on the upper end surface of the push rod 73. A plurality of limiting clamp seats 76 are respectively fixedly installed at the upper ends of the plurality of connecting blocks 75. The connecting blocks 75 serve to connect the push rod 73 and the limiting clamp seats 76 together. A plurality of fixed clamp seats 74 are fixedly installed in a linear array on the upper end surface of the carrier base 71. The fixed clamp seats 74 and the limiting clamp seats 76 are symmetrically arranged. A threaded sleeve 77 is penetrated and embedded in the middle of the side surface of the carrier base 71. A threaded column 78 is screwed tightly inside the threaded sleeve 77. The end of the threaded column 78 is rotatably connected to the end of the push rod 73. The cooperation between the threaded column 78 and the threaded sleeve 77 serves to drive the push rod 73 to move. Card slots 79 are respectively formed at the corners of the opposite surfaces of the fixed clamp seats 74 and the limiting clamp seats 76. The card slots 79 serve to limit the circuit board.

[0035] When performing the shooting detection, the threaded post 78 can be rotated first, so that the threaded post 78 uses the thread between it and the threaded sleeve 77 to push the push rod 73, and then drives multiple groups of limiting clamp seats 76 to move simultaneously, so as to adjust the distance between the opposite limiting clamp seats 76 and the fixed clamp seats 74 to adapt to the length of the circuit board. Subsequently, multiple circuit boards are placed between multiple groups of relatively arranged limiting clamp seats 76 and fixed clamp seats 74. At this time, the corners of the circuit board fit into the card slots 79. Then, the servo motor 57 drives the gear 58 to rotate, so that the guide seat 53 slides on the guide frame 52 under the meshing of the gear 58 and the tooth block 54, and then drives multiple circuit boards to move linearly one by one below the camera 81 for shooting detection. The captured images are displayed through the display screen 4 for the inspector to observe and detect the integrity of the solder joints on the protector circuit board. At the same time, the carrier 71 can be directly flipped in the front-back tilt direction or the left-right tilt direction. At this time, the connecting ball 64 rotates in the ball sleeve 63. After the flipping is completed, the top spring 68 will support and push the two chucks 69, so that the rotated connecting ball 64 is fixed under the clamping of the two chucks 69, and then the flipped carrier 71 is fixed, so that when passing below the camera 81 in turn for shooting detection, multiple circuit boards can be shot at multiple shooting angles. And after the carrier 71 is flipped in the left-right tilt direction, the bearing column 619 supported and fixed between the rotating block 621 and the concave frame 613 by the fixing spring 616 can be pulled out, so that the support plate 612 can move to be coplanar with the left-right tilted carrier 71. Then, the locking stud 812 is loosened to make the guide rod 85 movable, so that the guide wheel 810 at the end of the guide rod 85 can be pressed on the support plate 612. At this time, during the process of the guide seat 53 moving to drive the carrier 71 and the support plate 612 to move, the guide wheel 810 will roll on the tilted support plate 612, so that the camera 81 can move up and down with the tilt angle of the carrier 71 to ensure that the height between the camera 81 and the circuit board on the carrier 71 is always in a constant state during shooting.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for solder joints of a precision protector, comprising a base (1), characterized in that: A moving member (5) is installed at the upper end of the base (1), a supporting member (6) is installed at the upper end of the moving member (5), a clamping member (7) is installed at the end of the supporting member (6), a photographing member (8) is installed at the rear edge of the upper end of the base (1), the photographing member (8) is located above the side of the clamping member (7), the photographing member (8) is in contact with the supporting member (6), an L-shaped frame (3) is fixedly installed on the side of the base (1), a display screen (4) is fixedly installed at the end of the L-shaped frame (3), the display screen (4) is connected to the photographing member (8), and feet (2) are fixedly installed at the corners of the lower end surface of the base (1); The supporting member (6) includes two groups of bearing frames (61) symmetrically and fixedly installed in the middle of the upper end of the guide base (53); A concave frame (613) is fixedly installed at the rear end of the bearing frame (61) located at the rear. A rotating block (621) is fitted and installed inside the concave frame (613). A support plate (612) is fixedly installed at the upper end of the rotating block (621). A frame (614) is fixedly installed at the rear end of the concave frame (613). A disk body (617) is elastically installed inside the frame (614). A bearing column (619) is fixedly installed at the front end of the disk body (617). A plurality of triangular convex strips (620) are fixedly installed in a circular array on the outer surface of the bearing column (619). The triangular convex strips (620) and the bearing column (619) both pass through the space between the rotating block (621) and the concave frame (613) in a fitting manner; The bearing column (619) and the triangular convex strips (620) are integrally formed. A pull rod (615) is fixedly installed at the rear end of the disk body (617). The pull rod (615) passes through the rear end of the frame (614) in a fitting manner. A fixing spring (616) is wound around the outer side of the pull rod (615). The fixing spring (616) is located between the disk body (617) and the frame (614). A limiting block (618) extends from the side of the disk body (617). A square hole is formed in the side of the frame (614). The limiting block (618) is fitted in the square hole; The photographing member (8) includes a vertical frame (82) fixedly installed at the upper rear edge of the base (1). A collar (84) is fixedly installed at the end of the vertical frame (82). A guide rod (85) is fitted and installed inside the collar (84). A fixed seat (87) is fitted and installed at the front end of the vertical frame (82). A bearing plate (88) is inserted through and inlaid at the upper end of the fixed seat (87). The bearing plate (88) is fixed to the outer surface of the guide rod (85). A convex rib (83) extends on the front end face of the vertical frame (82). The convex rib (83) penetrates through the rear end face of the fixed seat (87) in a fitting manner. A wheel frame (89) is fixedly installed at the lower end of the guide rod (85). A guide wheel (810) is installed inside the wheel frame (89). The guide wheel (810) is in contact with the support plate (612). A camera (81) is fixedly installed at the front end of the fixed seat (87). The camera (81) is connected to the display screen (4). A compression spring (86) is wound around the outer side of the guide rod (85). The compression spring (86) is located between the upper end of the bearing plate (88) and the lower end of the collar (84). A threaded ring (811) is inserted through and inlaid on the outer surface of the collar (84). A locking stud (812) is screwed inside the threaded ring (811). The end of the locking stud (812) abuts against the outer surface of the guide rod (85).

2. The visual inspection device for solder joints of a precision protector according to claim 1, wherein: The moving member (5) includes a guide seat (53) arranged at the front part above the base (1). Two groups of guide frames (52) are respectively fitted and penetrated through the front and rear end faces of the guide seat (53). Fixed frames (51) are fixedly installed on the end faces of the two groups of guide frames (52). The lower end of the fixed frame (51) is fixedly connected to the upper end of the base (1). A servo motor (57) is fixedly installed at the corner of the upper end face of the base (1). A driving shaft (56) is fixedly installed at the output end of the servo motor (57). A gear (58) is coaxially fixedly installed on the outer surface of the driving shaft (56). A plurality of tooth blocks (54) are linearly and arrayedly fixedly installed on the lower end face of the guide seat (53). The tooth blocks (54) are meshed with the gear (58). Two groups of shaft frames (55) are symmetrically installed on the upper end face of the base (1). The end of the shaft frame (55) is rotatably connected to the driving shaft (56). The gear (58) is located between the two groups of shaft frames (55).

3. The visual inspection device for solder joints of a precision protector according to claim 2, characterized in that: Two connecting frames (62) are respectively fixedly installed at the edge of the opposite faces of the two groups of bearing frames (61). A ball socket (63) is inserted between the two connecting frames (62). A connecting ball (64) is fitted and installed inside the ball socket (63). A protruding column (65) is inserted through and inlaid at the central position inside the connecting ball (64). Two clamping heads (69) are elastically installed on the opposite faces of the two groups of bearing frames (61). The two clamping heads (69) both penetrate through the outer surface of the ball socket (63) in a fitting manner. The clamping heads (69) abut against the connecting ball (64). A rubber pad is arranged at the end face where the clamping head (69) abuts against the connecting ball (64).

4. The visual inspection device for solder joints of a precision protector according to claim 3, characterized in that: On the opposite faces of the two groups of the carrier frames (61), two groups of orientation columns (66) are respectively fitted and installed through. One end of the orientation column (66) is fixedly connected to a chuck (69). A tightening spring (68) is wound around the outer side of the orientation column (66). The tightening spring (68) is located between the chuck (69) and the carrier frame (61). The other end of the orientation column (66) is coaxially inlaid with a limit cap (67). A slider (611) extends from the side surface of the chuck (69). A chute (610) is penetrated and opened on the side surface of the connecting frame (62). The slider (611) fits inside the chute (610).

5. The visual inspection device for solder joints of a precision protector according to claim 3, characterized in that: The clamping member (7) includes a carrier seat (71) fixedly installed at the end of the extending column (65). Inside the carrier seat (71), a plurality of guide shells (72) are fixedly installed in a linear array. Inside the plurality of guide shells (72), a push rod (73) is fitted and installed. On the upper end surface of the push rod (73), a plurality of connecting blocks (75) are fixedly installed in a linear array. On the upper ends of the plurality of connecting blocks (75), a plurality of limiting clamp seats (76) are respectively fixedly installed. On the upper end surface of the carrier seat (71), a plurality of fixed clamp seats (74) are fixedly installed in a linear array. The fixed clamp seats (74) and the limiting clamp seats (76) are symmetrically arranged. In the middle of the side surface of the carrier seat (71), a threaded sleeve (77) is penetrated and inlaid. A threaded column (78) is screwed inside the threaded sleeve (77). The end of the threaded column (78) is rotatably connected to the end of the push rod (73). At the corners of the opposite faces of the fixed clamp seats (74) and the limiting clamp seats (76), clamping grooves (79) are respectively opened.

Images