Tool clamp for PCB detection production line and use method of tool clamp

Abstract

The invention discloses a tool clamp for a PCB detection production line and a use method thereof, and relates to the field of detection devices.The tool clamp comprises a detection frame, a detection conveying belt is arranged on the detection frame, to-be-detected boards are evenly placed on the detection conveying belt, a vertical translation assembly is arranged in the middle of the detection frame, and the vertical translation assembly is connected with an insertion detection mechanism; an element switching mechanism is arranged on the back surface of the detection frame; the plugging detection mechanism comprises a positioning detection plate, the positioning detection plate is provided with a plurality of groups of detection probes, the upper side of each group of detection probes is provided with a linkage pressing plate, the top of the positioning detection plate is provided with a plane moving frame and a first lifting motor, and the plane moving frame and the first lifting motor control a lower pressing block to move downwards. In combination with the element switching mechanism, the detection probe is controlled to be in butt joint with each detection area of the to-be-detected board, so that a plurality of detection items are rapidly completed, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of detection devices, in particular to a fixture for a PCB detection production line and a use method thereof. Background Art

[0002] Printed circuit boards (PCBs) are basic components used in electronic devices. They achieve electrical connections between electronic components by arranging conductive paths on an insulating substrate. The use of PCBs greatly simplifies the assembly and maintenance of electronic devices, while improving the reliability and performance of the equipment. During the manufacturing process of PCB boards, in order to ensure quality, PCB boards need to be tested, including abnormal open circuits, short circuits, resistance values, and capacitance values.

[0003] Existing testing equipment cannot quickly switch between tests for PCB boards. It can only test a single item on a PCB board at a time. When testing other items, it is necessary to switch equipment for testing. A single PCB board needs to be tested multiple times, and the testing efficiency is low. Summary of the invention

[0004] The object of the present invention is to provide a fixture for a PCB inspection production line and a method of using the fixture to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A fixture for a PCB detection production line comprises a detection frame, a detection conveyor belt is arranged on the detection frame, boards to be tested are evenly placed on the detection conveyor belt, a vertical translation component is arranged in the middle of the detection frame, a plug-in detection mechanism is connected to the vertical translation component, and a component switching mechanism is arranged on the back of the detection frame; the plug-in detection mechanism comprises a horizontal guide rail, two groups of L-shaped frames are installed on the horizontal guide rail, one group of L-shaped frames is fixedly installed with one end of the horizontal guide rail, and the other group of L-shaped frames is connected with a clamping component, and a bending rod is arranged at the bottom of the L-shaped frame, and the bending rod cooperates with the edge of the board to be tested Clamping, a card-connecting frame is installed on the inner side of the L-shaped frame, and the card-connecting frame is connected to a positioning detection plate, a plurality of detection probes are arranged on the positioning detection plate, and a linkage pressure plate is arranged between the detection probes, and a guide column is arranged on the edge of each group of detection probes of the positioning detection plate, and a return spring is sleeved on the guide column, and the edge of the linkage pressure plate is sleeved between the guide column, and the detection probe is aligned with the test area of ​​the test plate to be tested, and a plane moving frame is arranged on the top of the positioning detection plate, and a lifting motor 1 is arranged on the plane moving frame, and the lifting motor 1 is connected with a lower pressure block, and the lower pressure block cooperates with the linkage pressure plate.

[0006] As a further solution of the present invention: the clamping assembly includes a fixedly installed clamping motor, the clamping motor is connected to a threaded rod 1, a locking claw is threadedly connected to the threaded rod 1, the locking claw is locked on the end of another group of L-shaped frames, and a contact spring is arranged between the locking claw and the group of L-shaped frames.

[0007] As a further solution of the present invention: the component switching mechanism includes a mounting plate arranged on the rear side of the detection frame, a plurality of electronic components are evenly spaced on the mounting plate, a docking socket is arranged on the edge of the electronic components, a positioning sensor is correspondingly arranged for each electronic component, a suspension frame is arranged above the mounting plate, one end of the suspension frame is connected to a walking assembly, the other end of the suspension frame is arranged at a vertical frame, a lifting plate 2 is slidably mounted on the vertical frame, a lifting motor 2 is arranged on the suspension frame, the lifting motor 2 is connected to a threaded rod 2, the threaded rod 2 is threadedly connected to the lifting plate 2, a positioning lens matching the positioning sensor is arranged at the end of the lifting plate 2, a mounting slide is arranged at the other end of the lifting plate 2, a plug is evenly slidably mounted in the mounting slide, the plug cooperates with the docking socket, a wire post is arranged on the plug, docking terminals are continuously arranged on the edge of the detection frame, a wire is arranged between one end of the docking terminal and the wire post, and the other end of the docking terminal is connected to a detection probe in the plug detection mechanism through a detection line.

[0008] As a further solution of the present invention: a lifting column is arranged on the top of the plug, a supporting spring is arranged in the installation slide groove, a pushing cylinder is arranged on the second lifting plate, the pushing cylinder is connected to a pushing frame, and a positioning spring plate is arranged on the edge of the docking socket.

[0009] As a further solution of the present invention: the walking component includes a mating rack arranged on the detection frame, and a snap-in slide rail is arranged on both sides of the mating rack. A snap-in frame is slidably installed on the snap-in slide rail, and a mating gear is rotatably installed in the snap-in frame. The mating gear and the mating rack are meshed with each other, and the mating gear is connected to a walking motor, and the snap-in frame is connected to the suspension frame.

[0010] As a further solution of the present invention: the vertical translation assembly includes a vertical plate, the vertical plate is fixedly installed between the vertical plate and the detection frame, a screw is arranged on the vertical plate, the screw is connected to an adjusting motor, a translation plate is installed in cooperation with the screw, vertical slide rails are symmetrically arranged on the translation plate, a lifting plate 1 is slidably installed on the vertical slide rails, and the plug-in detection mechanism is connected to the lifting plate 1.

[0011] A method for using a fixture for a PCB detection production line as described above comprises the following steps: S1, driving a bending rod to dock with a hole at an edge of a board to be tested by a vertical translation component, and driving the board to be tested to be clamped and lifted in combination with a clamping component and the bending rod; S2, driving a lifting motor 1 and a pressing block to respectively press down a linkage pressing plate on a positioning detection plate by a planar moving frame, so that detection probes fall into the test area of ​​the board to be tested in turn, and perform functional detection; S3, switching electronic components on a mounting plate by a walking component and a component switching mechanism, thereby realizing functional detection of different areas on the board to be tested.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The clamping assembly drives the two sets of L-shaped frames closer to each other, and then drives the bent rod at the bottom of the L-shaped frame to fall into the hole at the edge of the board to be tested. Combined with the clamping assembly, the board to be tested on the detection conveyor belt is clamped, picked up and lifted for subsequent detection operations. The lifting motor 1 and the lower pressure block are driven by the plane moving frame to move in the plane, and the linkage pressure plate on the multiple sets of detection probes on the positioning detection plate below is pressed down, so that the detection probes fall into the corresponding detection parts on the board to be tested. Combined with the component switching mechanism, different requirements of the detection of multiple areas of the board to be tested can be realized, thereby improving the detection efficiency of a single PCB board and eliminating the steps of frequent cycle detection.

[0013] (2) Multiple electronic components are evenly installed on the mounting plate, and the multiple electronic components are connected to the detection probes through the plugs and docking terminals, and the plug-in detection mechanism is used to detect various functional areas of the board to be tested. The lifting plate 2 is controlled to rise and fall by the lifting motor 2, thereby controlling the connection and disconnection between the plug and the docking socket, thereby connecting or disconnecting the electronic components.

[0014] (3) By setting a support spring, the plug in the installation slot is pushed to one side, and the push cylinder and the push frame drive the entire plug to move in the installation slot. Since different electronic components have different numbers of connectors, a positioning spring plate is set at the edge of the docking socket. After the plug is pushed by the push frame, the lifting plate 2 is synchronously controlled to descend, so that the plug is aligned with the edge of the docking socket. Continuing to control the descent of the lifting plate 2 will make the plug dock with the docking socket, thereby connecting the electronic components. The positioning spring plate will descend when it is pressed down by the lifting plate 2, and will reset after the lifting plate 2 is raised, which is convenient for repeated positioning and plugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the rear structure of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the walking component in the present invention.

[0018] Figure 4 It is a schematic diagram of the installation of electronic components in the present invention.

[0019] Figure 5 It is a structural schematic diagram of the component switching mechanism in the present invention.

[0020] Figure 6 It is a schematic structural diagram of the vertical translation assembly in the present invention.

[0021] Figure 7 It is a structural schematic diagram of the plug detection mechanism in the present invention.

[0022] Figure 8 It is a schematic diagram of the structure of the clamping assembly in the present invention.

[0023] Fig. 9 It is a structural schematic diagram of the positioning detection board in the present invention.

[0024] Fig.10 It is a schematic diagram of the installation of the lower pressing block in the present invention.

[0025] In the figure: 1, detection frame; 100, detection line; 102, docking terminal; 2, detection conveyor belt; 5, vertical translation assembly; 50, vertical plate; 51, translation plate; 52, lead screw; 53, adjustment motor; 54, vertical slide rail; 55, lifting plate 1; 6, plug-in detection mechanism; 60, horizontal guide rail; 61, clamping assembly; 610, clamping motor; 611, threaded rod 1; 612, snap-fit ​​claw; 613, contact spring; 62, L-shaped frame; 63, bending rod; 64, board to be tested; 65, positioning detection board; 650, detection probe; 651, linkage pressure plate; 652, guide column; 653, return spring; 66, clamping frame; 67. Planar moving frame; 671. Lifting motor one; 672. Pressing block; 7. Component switching mechanism; 70. Mounting plate; 71. Positioning sensor; 72. Electronic component; 73. Docking socket; 74. Suspension frame; 75. Vertical frame; 76. Lifting plate two; 77. Positioning lens; 78. Lifting motor two; 79. Threaded rod two; 710. Plug; 711. Mounting slide; 712. Lifting column; 713. Pushing cylinder; 714. Pushing frame; 715. Positioning spring plate; 716. Wire rod; 8. Traveling assembly; 80. Matching rack; 81. Snap-on slide rail; 82. Matching gear; 83. Snap-on frame; 84. Traveling motor. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0027] like Figure 1 , Figure 7 , Fig. 9 , Fig.10 As shown, a fixture for a PCB detection production line includes a detection frame 1, a detection conveyor belt 2 is provided on the detection frame 1, and a board to be tested 64 is evenly placed on the detection conveyor belt 2, a vertical translation component 5 is provided in the middle of the detection frame 1, and the vertical translation component 5 is connected to a plug-in detection mechanism 6, and a component switching mechanism 7 is provided on the back of the detection frame 1; the plug-in detection mechanism 6 includes a horizontal guide rail 60, and two groups of L-shaped frames 62 are installed on the horizontal guide rail 60, one group of L-shaped frames 62 is fixedly installed with one end of the horizontal guide rail 60, and the other group of L-shaped frames 62 is connected with a clamping component 61, and a bending rod 63 is provided at the bottom of the L-shaped frame 62, and the bending rod 63 and the edge of the board to be tested 64 are clamped together, and the inner side of the L-shaped frame 62 A clamping frame 66 is installed, and the clamping frame 66 is connected to a positioning detection plate 65. A plurality of detection probes 650 are arranged on the positioning detection plate 65, and a linkage pressure plate 651 is arranged between the detection probes 650. The positioning detection plate 65 is provided with a guide column 652 at the edge of each group of detection probes 650, and a return spring 653 is sleeved on the guide column 652. The edge of the linkage pressure plate 651 is sleeved with the guide column 652, and the detection probes 650 are aligned with the test area of ​​the test plate 64. A plane moving frame 67 is arranged on the top of the positioning detection plate 65, and a lifting motor 671 is arranged on the plane moving frame 67. The lifting motor 671 is connected to a lower pressure block 672, and the lower pressure block 672 cooperates with the linkage pressure plate 651.

[0028] Specifically, the clamping assembly 61 drives the two groups of L-shaped frames 62 to approach each other, and then drives the bent rod 63 at the bottom of the L-shaped frame 62 to fall into the hole at the edge of the board to be tested 64. The clamping assembly 61 is combined to realize the clamping, picking up and lifting of the board to be tested 64 on the detection conveyor belt 2, and subsequent detection operations are performed. The plane moving frame 67 drives the lifting motor 1 671 and the lower pressing block 672 to move in the plane, and presses down the linkage pressing plate 651 on the multiple groups of detection probes 650 on the lower positioning detection board 65, so that the detection probes 650 fall into the corresponding detection positions on the board to be tested 64. Combined with the component switching mechanism 7, different requirements of the detection of multiple areas of the board to be tested 64 are realized, thereby improving the detection efficiency of a single PCB board and eliminating the steps of frequent cycle detection.

[0029] Further, such as Figure 8 As shown, the clamping assembly 61 includes a fixedly installed clamping motor 610, and the clamping motor 610 is connected to a threaded rod 611, and a locking claw 612 is threadedly connected to the threaded rod 611. The locking claw 612 is locked on the end of another group of L-shaped frames 62, and a contact spring 613 is arranged between the locking claw 612 and the group of L-shaped frames 62.

[0030] Specifically, the clamping motor 610 drives the threaded rod 611 to rotate, and then drives the locking claw 612 to move along the horizontal guide rail 60, driving the L-shaped frame 62 and the bent rod 63 at the bottom to approach the edge of the board to be tested 64, wherein the contact spring 613 arranged inside the locking claw 612 can prevent the bent rod 63 from directly and rigidly contacting the edge of the board to be tested 64, thereby avoiding damage to the board to be tested 64 due to excessive force when clamping.

[0031] Further, such as Figure 4 , Figure 5 As shown, the component switching mechanism 7 includes a mounting plate 70 arranged at the rear side of the detection frame 1, and a plurality of electronic components 72 are evenly spaced on the mounting plate 70. The edges of the electronic components 72 are provided with docking sockets 73, and each electronic component 72 is correspondingly provided with a positioning sensor 71. A suspension frame 74 is arranged above the mounting plate 70, and one end of the suspension frame 74 is connected to a walking assembly 8, and the other end of the suspension frame 74 is provided with a vertical frame 75, and a lifting plate 2 76 is slidably installed on the vertical frame 75, and a lifting motor 2 78 is arranged on the suspension frame 74, and the lifting motor 2 78 is connected to a threaded rod 2 79, and the threaded rod 2 79 is connected to the threaded rod 2 79. 9 is threadedly connected with the lifting plate 2 76, and a positioning lens 77 matching the positioning sensor 71 is provided at the end of the lifting plate 2 76, and a mounting groove 711 is provided at the other end of the lifting plate 2 76, and a plug 710 is evenly slidably installed in the mounting groove 711, and the plug 710 cooperates with the docking socket 73. A wire post 716 is provided on the plug 710, and docking terminals 102 are continuously provided at the edge of the detection frame 1, and a wire is provided between one end of the docking terminal 102 and the wire post 716, and the other end of the docking terminal 102 is connected to the detection probe 650 in the plug detection mechanism 6 through the detection line 100.

[0032] Specifically, multiple electronic components 72 are evenly installed on the mounting plate 70, and the multiple electronic components 72 are connected to the detection probe 650 through the plug 710 and the docking terminal 102, and the plug detection mechanism 6 is used to detect various functional areas of the board to be tested 64. The lifting plate 2 76 is raised and lowered by the lifting motor 2 78, thereby controlling the connection and disconnection between the plug 710 and the docking socket 73, thereby connecting or disconnecting the electronic components 72.

[0033] Further, such as Figure 5 As shown, a lifting column 712 is provided on the top of the plug 710, a supporting spring is provided in the mounting groove 711, a pushing cylinder 713 is provided on the lifting plate 76, the pushing cylinder 713 is connected to a pushing frame 714, and a positioning spring plate 715 is provided on the edge of the docking socket 73.

[0034] Specifically, the support spring is provided to push the plug 710 in the installation slot 711 to one side, and the push cylinder 713 and the push frame 714 are combined to drive the entire plug 710 to move in the installation slot 711. Since different electronic components 72 have different numbers of connectors, a positioning spring plate 715 is provided at the edge of the docking socket 73, and after the plug 710 is pushed by the push frame 714, the lifting plate 2 76 is synchronously controlled to descend, so that the plug 710 is aligned with the edge of the docking socket 73. Continuing to control the lifting plate 2 76 to descend will cause the plug 710 to dock with the docking socket 73, thereby connecting the electronic component 72. The positioning spring plate 715 will descend when pressed by the lifting plate 2 76, and will reset after the lifting plate 2 76 is raised, so as to facilitate repeated positioning and plugging.

[0035] Further, such as Figure 3 As shown, the walking component 8 includes a mating rack 80 arranged on the detection frame 1, and a snap-in slide rail 81 is arranged on both sides of the mating rack 80. A snap-in frame 83 is slidably installed on the snap-in slide rail 81, and a mating gear 82 is rotatably installed in the snap-in frame 83. The mating gear 82 is meshed with the mating rack 80, and the mating gear 82 is connected to a walking motor 84. The snap-in frame 83 is connected to the suspension frame 74.

[0036] Specifically, the suspension frame 74 is driven to move along the card-jointed slide rail 81 through the mutual engagement between the matching gear 82 and the matching rack 80. When the positioning sensor 71 and the positioning lens 77 correspond to each other, the driving of the travel motor 84 is stopped. After each electronic component 72 is detected, the travel motor 84 is restarted to detect the next electronic component 72. At the same time, the corresponding plug-in detection mechanism 6 also adjusts the coordination between the lower pressure block 672 and the next group of detection probes 650.

[0037] Further, such as Figure 6 As shown, the vertical translation assembly 5 includes a vertical plate 50, which is fixedly installed between the vertical plate 50 and the detection frame 1, and a screw 52 is arranged on the vertical plate 50, and the screw 52 is connected to an adjusting motor 53, and a translation plate 51 is installed in cooperation with the screw 52, ​​and a vertical slide rail 54 is symmetrically arranged on the translation plate 51, and a lifting plate 55 is slidably installed on the vertical slide rail 54, and the plug-in detection mechanism 6 is connected to the lifting plate 55.

[0038] A method for using a fixture for a PCB detection production line as described above comprises the following steps: S1, driving a bending rod 63 to dock with a hole at the edge of a board to be tested 64 through a vertical translation component 5, and driving the board to be tested 64 to be clamped and lifted in combination with a clamping component 61 and a bending rod 63; S2, driving a lifting motor 671 and a pressing block 672 through a planar moving frame 67 to respectively press down a linkage pressing plate 651 on a positioning detection plate 65, so that a detection probe 650 falls into a detection area of ​​the board to be tested 64 in turn for functional detection; S3, switching electronic components 72 on a mounting plate 70 through a walking component 8 and a component switching mechanism 7, thereby realizing functional detection of different areas on the board to be tested 64.

[0039] The working principle of the embodiment of the present invention is: like Figure 1-Figure 10As shown, the clamping assembly 61 drives the two groups of L-shaped frames 62 to approach each other, and then drives the bent rod 63 at the bottom of the L-shaped frame 62 to fall into the hole at the edge of the board to be tested 64. The clamping assembly 61 is combined to realize the clamping, picking up and lifting of the board to be tested 64 on the detection conveyor belt 2, and subsequent detection operations are performed. The lifting motor 1 671 and the lower pressing block 672 are driven by the plane moving frame 67 to move in the plane, and the linkage pressing plate 651 on the multiple groups of detection probes 650 on the positioning detection plate 65 below is pressed down, so that the detection probes 650 fall into the corresponding detection positions on the board to be tested 64. Combined with the component switching mechanism 7, different requirements of the detection of multiple areas of the board to be tested 64 are realized, thereby improving the detection efficiency of a single PCB board and eliminating the steps of frequent cycle detection. The clamping motor 610 drives the threaded rod 1 611 to rotate, and then drives the locking claw 612 to move along the horizontal guide rail 60, driving the L-shaped frame 62 and the bent rod 63 at the bottom close to the edge of the board to be tested 64, wherein the contact spring 613 provided inside the locking claw 612 can prevent the bent rod 63 from directly and rigidly contacting the edge of the board to be tested 64, and avoid damage to the board to be tested 64 due to excessive force when clamping. A variety of electronic components 72 are evenly installed on the mounting plate 70, and the connection between the multiple electronic components 72 and the detection probe 650 is realized through the plug 710 and the docking terminal 102, and the plug-in detection mechanism 6 is used to detect various functional areas of the board to be tested 64. Among them, the lifting plate 2 76 is controlled to rise and fall by the lifting motor 2 78, thereby controlling the connection and disconnection between the plug 710 and the docking socket 73, thereby connecting or disconnecting with the electronic components 72. By setting a supporting spring, the plug 710 in the installation slot 711 is pushed to one side, and the push cylinder 713 and the push frame 714 drive the entire plug 710 to move in the installation slot 711. Since different electronic components 72 have different numbers of connectors, a positioning spring plate 715 is set at the edge of the docking socket 73, and after the plug 710 is pushed by the push frame 714, the lifting plate 2 76 is synchronously controlled to descend, so that the plug 710 is aligned with the edge of the docking socket 73. Continuing to control the lifting plate 2 76 to descend will make the plug 710 dock with the docking socket 73, so as to connect the electronic component 72. The positioning spring plate 715 will descend when pressed by the lifting plate 2 76, and the lifting plate 2 76 will reset after rising, so as to facilitate repeated positioning and plugging. The suspension frame 74 is driven to move along the card-jointed slide rail 81 through the mutual engagement between the matching gear 82 and the matching rack 80. When the positioning sensor 71 and the positioning lens 77 correspond to each other, the driving of the travel motor 84 is stopped. After each electronic component 72 is detected, the travel motor 84 is restarted to detect the next electronic component 72. At the same time, the corresponding plug-in detection mechanism 6 also adjusts the coordination between the lower pressure block 672 and the next group of detection probes 650.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Any reference numeral in a claim shall not be regarded as limiting the claim involved.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fixture for a PCB inspection production line, comprising an inspection frame (1), wherein the inspection frame (1) is provided with an inspection conveyor belt (2), and boards to be inspected (64) are evenly placed on the inspection conveyor belt (2), characterized in that: A vertical translation assembly (5) is provided in the middle of the detection frame (1), the vertical translation assembly (5) is connected to a plug-in detection mechanism (6), and a component switching mechanism (7) is provided on the back of the detection frame (1); The plug-in detection mechanism (6) comprises a horizontal guide rail (60), on which two groups of L-shaped frames (62) are mounted, one group of the L-shaped frames (62) being fixedly mounted on one end of the horizontal guide rail (60), and the other group of the L-shaped frames (62) being connected to a clamping assembly (61), a bending rod (63) being arranged at the bottom of the L-shaped frame (62), the bending rod (63) and the edge of the board to be tested (64) being clamped in cooperation with each other, a clamping frame (66) being mounted on the inner side of the L-shaped frame (62), the clamping frame (66) being connected to a positioning detection board (65), the positioning detection board (65) being provided with a plurality of groups of detection probes (650), between which the detection probes (650) are connected. A linkage pressure plate (651) is provided. The positioning detection plate (65) is provided with a guide column (652) at the edge of each group of detection probes (650). A return spring (653) is sleeved on the guide column (652). The edge of the linkage pressure plate (651) is sleeved with the guide column (652). The detection probes (650) are aligned with the test area of ​​the test plate (64). A plane moving frame (67) is provided on the top of the positioning detection plate (65). A lifting motor (671) is provided on the plane moving frame (67). The lifting motor (671) is connected to a lower pressing block (672). The lower pressing block (672) cooperates with the linkage pressure plate (651).

2. A fixture for a PCB inspection production line according to claim 1, characterized in that: The clamping assembly (61) comprises a fixedly mounted clamping motor (610), the clamping motor (610) being connected to a threaded rod (611), a locking claw (612) being threadedly connected to the threaded rod (611), the locking claw (612) being locked to the end of another group of L-shaped frames (62), and a contact spring (613) being provided between the locking claw (612) and the group of L-shaped frames (62).

3. A fixture for a PCB inspection production line according to claim 2, characterized in that: The component switching mechanism (7) comprises a mounting plate (70) arranged at the rear side of the detection frame (1), a plurality of electronic components (72) are evenly spaced on the mounting plate (70), a docking socket (73) is arranged at the edge of the electronic component (72), and each electronic component (72) is correspondingly provided with a positioning sensor (71), a suspension frame (74) is arranged above the mounting plate (70), one end of the suspension frame (74) is connected to a walking assembly (8), the other end of the suspension frame (74) is provided with a vertical frame (75), a lifting plate (76) is slidably mounted on the vertical frame (75), a lifting motor (78) is arranged on the suspension frame (74), the lifting motor (78) is connected to a threaded rod (79), and the threaded rod (79) is connected to the lifting motor (78). ) is threadedly connected with the lifting plate 2 (76), the end of the lifting plate 2 (76) is provided with a positioning lens (77) matched with the positioning sensor (71), the other end of the lifting plate 2 (76) is provided with a mounting groove (711), a plug (710) is evenly slidably mounted in the mounting groove (711), the plug (710) and the docking socket (73) cooperate with each other, a wire post (716) is provided on the plug (710), the edge of the detection frame (1) is continuously provided with docking terminals (102), a wire is provided between one end of the docking terminal (102) and the wire post (716), and the other end of the docking terminal (102) is connected to the detection probe (650) in the plug detection mechanism (6) through the detection line (100).

4. A fixture for a PCB inspection production line according to claim 3, characterized in that: A lifting column (712) is arranged on the top of the plug (710), a supporting spring is arranged in the installation slide groove (711), a pushing cylinder (713) is arranged on the second lifting plate (76), the pushing cylinder (713) is connected to a pushing frame (714), and a positioning spring plate (715) is arranged on the edge of the docking socket (73).

5. A fixture for a PCB inspection production line according to claim 4, characterized in that: The travel assembly (8) comprises a matching rack (80) arranged on the detection frame (1), and a clamping slide rail (81) is arranged on both sides of the matching rack (80), a clamping frame (83) is slidably mounted on the clamping slide rail (81), a matching gear (82) is rotatably mounted in the clamping frame (83), the matching gear (82) and the matching rack (80) are meshed with each other, the matching gear (82) is connected to a travel motor (84), and the clamping frame (83) is connected to the suspension frame (74).

6. A fixture for a PCB inspection production line according to claim 5, characterized in that: The vertical translation assembly (5) comprises a vertical plate (50), the vertical plate (50) being fixedly mounted on the detection frame (1), a lead screw (52) being arranged on the vertical plate (50), the lead screw (52) being connected to an adjustment motor (53), a translation plate (51) being mounted in cooperation with the lead screw (52), a vertical slide rail (54) being symmetrically arranged on the translation plate (51), a lifting plate (55) being slidably mounted on the vertical slide rail (54), and the plug-in detection mechanism (6) being connected to the lifting plate (55).

7. A method for using the fixture for a PCB inspection production line as claimed in claim 6, characterized in that: The following steps are involved: S1, driving the bending rod (63) to dock with the hole at the edge of the test plate (64) through the vertical translation component (5), and driving the test plate (64) to clamp and lift in combination with the clamping component (61) and the bending rod (63); S2, driving the lifting motor 1 (671) and the pressing block (672) via the plane moving frame (67) to respectively press down the linkage pressing plate (651) on the positioning detection plate (65), so that the detection probes (650) fall into the test area of ​​the test plate (64) in sequence to perform functional detection; S3, switching the electronic components (72) on the mounting plate (70) through the walking assembly (8) and the component switching mechanism (7), thereby achieving functional testing of different areas on the board to be tested (64).

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