A pre-bending jig for flexible circuit board with positioning function

Abstract

The present invention relates to the technical field of flexible circuit board processing, and specifically to a pre-bending jig for flexible circuit boards with a positioning function, comprising a testing machine body, on which a rotating plate is rotatably connected; an adjusting mechanism is installed on the rotating plate; a guiding mechanism is fixedly installed on the testing machine body; mounting blocks are fixed on the adjusting mechanism and the guiding mechanism; a positioning mechanism is slidably provided on the mounting block; a long rod is installed on the guiding mechanism; the two ends of the circuit board are placed into the two mounting blocks, and the positioning mechanism is rotated and pushed to clamp the ends of the circuit board as it slides along the mounting blocks; the adjusting mechanism is rotated to drive a mounting block to slide on the top of the rotating plate, thereby adjusting the distance between the two mounting blocks; the guiding mechanism is rotated to drive the long rod to rotate, thereby adjusting the position of the long rod, and the rotating plate drives a mounting block to rotate, thereby making the circuit board contact with the side wall of the long rod.

Description

Technical Field

[0001] The invention relates to the technical field of flexible circuit board processing, in particular to a pre-bending jig for a flexible circuit board with a positioning function. Background Art

[0002] Testing the bending resistance, fatigue, and life of flexible printed circuits (FPCs) is an important part of ensuring their quality and performance. In order to evaluate the bending resistance of FPCs, special testing instruments are required for bending life tests. These testing instruments, such as FPC bending testers and material folding testers, can simulate the bending conditions that FPCs may encounter in actual use, thereby evaluating their durability and reliability. Through these tests, it can be ensured that FPCs can still maintain good electrical performance after a certain number of bends, meeting the requirements of product design and use.

[0003] However, when testing the bending life of a circuit board, a long rod is installed near the fixed end of the circuit board. Since the long rod is fixed at the top of the testing machine, its position and angle are not convenient to adjust. When the circuit board rotates, the position in contact with the long rod is always consistent, which is not convenient for testing the bending resistance of different positions of the circuit board, and is not conducive to improving the test efficiency. Moreover, since different types of circuit boards have different lengths, when the end is fixed, the rotating end is not convenient for adjusting the position according to the length of the circuit board. During the test, the circuit board is loose, resulting in a loose fit with the long rod, which easily leads to errors in the test results. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a pre-bending jig for a flexible circuit board with a positioning function.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a pre-bending fixture for a flexible circuit board with a positioning function, comprising a test machine body, a rotating plate rotatably connected to the test machine body; an adjusting mechanism installed on the rotating plate; a guide mechanism fixedly installed on the test machine body; a mounting block fixed on both the adjusting mechanism and the guide mechanism; a positioning mechanism slidingly provided on the mounting block; and a long rod installed on the guide mechanism;

[0006] The positioning mechanism includes a pulling block and a card plate, the mounting block is slidably connected with a card plate, the pulling block is fixedly installed on the card plate, a number of card slots are equidistantly provided on the card plate, the mounting block is fixedly connected with a limiting block, the card plate is carded and connected with a card rod, the card rod is threadedly connected with a rotating rod, the rotating rod is rotatably connected to the mounting block, the connecting block is fixedly installed on the rotating rod, the card plate is fixedly connected with a pressure plate, the mounting block and the pressure plate are both bonded with rubber pads, the card plate and the limiting block are slidably connected, the pressure plate is located at the end of the card plate away from the pulling block, the pressure plate and the mounting block are slidably connected, the card rod is carded and installed at the card slot, the card rod is slidably connected to the mounting block, and the connecting block and the mounting block are rotatably connected.

[0007] Specifically, the adjusting mechanism includes a rotating block and a worm, the rotating block is rotatably connected to the rotating plate, the worm is fixedly mounted on the rotating block, the worm is meshed with a worm wheel, the worm wheel is fixedly connected with a lead screw, the lead screw is threadedly connected to a base plate, a slider is fixedly mounted on the base plate, a limit plate is fixedly connected to the rotating plate, the slider is slidably connected to the limit plate, the lead screw and the worm are both rotatably connected to the rotating plate, and the slider is located at the bottom end of the base plate.

[0008] Specifically, the guide mechanism includes a fixed plate and a connecting plate, the testing machine body is fixedly connected to a fixed plate, the fixed plate is fixedly installed on the connecting plate, a connecting rod is fixedly installed on the connecting plate, a plurality of ball bearings are arranged on the connecting rod, a support plate is sleeved on the connecting rod, a fixed rod is threadedly connected to the connecting rod, a slide groove and a plurality of sockets are arranged on the support plate, a plurality of sockets are equidistantly arranged inside the support plate, a long rod is threadedly installed on the socket, a plurality of ball bearings are equidistantly arranged inside the connecting rod, the ball bearings are rollingly connected to the support plate, the fixed rod and the connecting rod are both arranged in a T-shaped structure, and the bottom end of the fixed rod is in conflict with the support plate, the long rod is located at the end of the support plate away from the fixed rod, and the long rod is threadedly connected to the support plate.

[0009] The beneficial effects of the present invention are:

[0010] (1) The pre-bending jig for a flexible circuit board with a positioning function described in the present invention is to place the two ends of the flexible circuit board into the two mounting blocks respectively, and rotate and push the positioning mechanism so that the positioning mechanism can clamp the ends of the circuit board while sliding along the mounting blocks, thereby fixing the two ends of the circuit board in the mounting blocks. That is, when fixing the two ends of the flexible circuit board, the operator can first place the ends of the circuit board into the two mounting blocks respectively, and then rotate the connecting block by hand. The connecting block rotates along the top of the mounting block, which can drive the rotating rod fixedly connected to it to rotate. Since the end of the rotating rod is threadedly connected A card rod is connected. When the rotating rod rotates along the inner wall of the mounting block, the card rod can slide along its side wall in the direction close to the connecting block, and then the card rod can slide from the card plate into the mounting block. At this time, the operator pushes the pulling block fixed at the end of the card plate by hand, so that the card plate can drive the pressure plate fixed at the other end to slide. Rubber pads are bonded to the pressure plate and the mounting block. When the rubber pad on the pressure plate contacts the end of the circuit board placed in the mounting block, the connecting block can be rotated in the direction, and the rotating rod drives the card rod to engage with the card slot provided in the card plate, so that the card rod limits the card plate, and at the same time, the end of the circuit board can be fixed to the inside of the mounting block through the pressure plate.

[0011] (2) The pre-bending jig for a flexible circuit board with a positioning function described in the present invention can use a tool to rotate the adjustment mechanism to drive a mounting block to slide on the top of a rotating plate, and then adjust the distance between the two mounting blocks according to the length of the circuit board, that is, after the two ends of the circuit board are fixed, the operator can use the tool to rotate the rotating block provided on the rotating plate, and when the rotating block rotates along the top of the rotating plate, it can drive the worm fixed to it to rotate inside the rotating plate, and the worm is meshed with a worm wheel, and when the worm wheel rotates, it drives the lead screw fixed to it to rotate, and because the lead screw is threadedly connected to a bottom plate, when the lead screw rotates along the rotating plate, it can drive the bottom plate to move, and a slider is installed at the bottom end of the bottom plate, and the slider is limited by a limit plate fixed on the rotating plate, so that the bottom plate can only drive the slider to slide under the driving force of the lead screw, and the bottom plate is displaced, so that the distance between the two mounting blocks changes, and then the position of the bottom plate can be adjusted according to the length of the circuit board, so as to facilitate the bending test of the circuit board.

[0012] (3) The pre-bending jig for a flexible circuit board with a positioning function described in the present invention has a rotating guide mechanism that can drive a long rod to rotate, thereby adjusting the position of the long rod. The rotating plate drives a mounting block to rotate, so that the circuit board can contact the side wall of the long rod, thereby facilitating a bending test on the circuit board, that is, during the test, the long rod is threadedly installed in a socket provided on the support plate, and a plurality of sockets are provided, so that the position of the long rod can be adjusted during the test; then the fixing rod is rotated. Since the fixing rod is threadedly connected to the connecting rod fixed on the connecting plate, when it is separated from the connecting rod, the supporting plate can be dragged or rotated along the connecting plate. Since the supporting plate is sleeved on the connecting rod, when it slides or rotates, it generates friction with the connecting rod, thereby determining the position of the supporting plate. After that, the fixing rod can be reinstalled on the connecting rod, and the position of the supporting plate can be fixed when the fixing rod rotates to a state of conflict with the supporting plate; when the supporting plate drives the long rod to slide or rotate, the side wall of the circuit board can be made to contact the long rod. At this time, the control switch of the testing machine body can be turned on, and the motor arranged inside can drive the rotating plate to rotate. During the rotation of the rotating plate, the mounting block at the top is driven to rotate, thereby causing one end of the circuit board to rotate. During rotation, the circuit board rotates along the long rod. Since a sensor is installed on the testing machine body, when the rotating plate rotates close to the end of the rotating block to contact the sensor, the machine can automatically count, and automatically stop and save data when the set number of times is reached or a fault occurs, thereby facilitating the flexural and bending life detection test of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a pre-bending jig for a flexible circuit board with a positioning function provided by the present invention;

[0015] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0016] Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B is shown;

[0017] Figure 4 It is a schematic diagram of the connection structure between the base plate and the mounting block of the present invention;

[0018] Figure 5 It is a schematic diagram of the connection structure between the connection plate and the support plate of the present invention;

[0019] Figure 6 It is a schematic diagram of the connection structure between the clamping plate and the pressing plate of the present invention;

[0020] Figure 7 for Figure 6 An enlarged schematic diagram of the C-section structure is shown;

[0021] Figure 8 It is a schematic diagram of the connection structure between the support plate and the long rod of the present invention;

[0022] Fig. 9 for Figure 8 An enlarged schematic diagram of the D-section structure is shown;

[0023] Fig.10 It is a schematic diagram of the connection structure between the rotating plate and the rotating block of the present invention.

[0024] In the figure: 1. testing machine body; 2. rotating plate; 3. adjusting mechanism; 301. rotating block; 302. screw; 303. limiting plate; 304. sliding block; 305. bottom plate; 306. worm gear; 307. worm; 4. mounting block; 5. positioning mechanism; 501. pulling block; 502. clamping plate; 503. limiting block; 504. connecting block; 505. pressing plate; 506. rubber pad; 507. rotating rod; 508. clamping rod; 509. clamping groove; 6. guiding mechanism; 601. fixing plate; 602. connecting plate; 603. supporting plate; 604. fixing rod; 605. socket; 606. slide groove; 607. ball; 608. connecting rod; 7. long rod. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig.10 As shown, a pre-bending jig for a flexible circuit board with a positioning function according to the present invention comprises a testing machine body 1, on which a rotating plate 2 is rotatably connected; an adjusting mechanism 3 is installed on the rotating plate 2; a guiding mechanism 6 is fixedly installed on the testing machine body 1; a mounting block 4 is fixed on both the adjusting mechanism 3 and the guiding mechanism 6; a positioning mechanism 5 is slidably provided on the mounting block 4; and a long rod 7 is installed on the guiding mechanism 6;

[0027] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the positioning mechanism 5 includes a pull block 501 and a card plate 502, the mounting block 4 is slidably connected with the card plate 502, the pull block 501 is fixedly installed on the card plate 502, a plurality of card slots 509 are equidistantly provided on the card plate 502, a limited block 503 is fixedly connected to the mounting block 4, a card rod 508 is snap-connected to the card plate 502, a rotating rod 507 is threadedly connected to the card rod 508, the rotating rod 507 is rotatably connected to the mounting block 4, a connecting block 504 is fixedly installed on the rotating rod 507, a pressing plate 505 is fixedly connected to the card plate 502, and the mounting block 4 The rubber pad 506 is bonded to the clamping plate 502 and the limiting block 503, the clamping plate 505 is located at the end of the clamping plate 502 away from the pulling block 501, the clamping plate 505 is slidably connected to the mounting block 4, the clamping slot 509 is clamped with a clamping rod 508, the clamping rod 508 is slidably connected to the mounting block 4, the connecting block 504 is rotatably connected to the mounting block 4, the two ends of the flexible circuit board are respectively placed in the two mounting blocks 4, the positioning mechanism 5 is rotated and pushed, so that the positioning mechanism 5 can clamp the end of the circuit board when sliding along the mounting block 4 The two ends of the circuit board can be fixed in the mounting block 4, that is, when fixing the two ends of the flexible circuit board, the operator can first put the ends of the circuit board into the two mounting blocks 4 respectively, and then rotate the connecting block 504 by hand. The connecting block 504 rotates along the top of the mounting block 4, which can drive the rotating rod 507 fixedly connected thereto to rotate. Since the end of the rotating rod 507 is threadedly connected with a clamping rod 508, when the rotating rod 507 rotates along the inner wall of the mounting block 4, the clamping rod 508 can slide along its side wall toward the direction close to the connecting block 504, and then the clamping rod 508 slides from the inside of the clamping plate 502 to the The operator pushes the pull block 501 fixed at the end of the card plate 502 by hand, so that the card plate 502 can drive the pressure plate 505 fixed at the other end to slide. Rubber pads 506 are bonded to the pressure plate 505 and the mounting block 4. When the rubber pad 506 on the pressure plate 505 contacts the end of the circuit board placed in the mounting block 4, the connecting block 504 can be rotated in the direction, and the rotating rod 507 drives the card rod 508 to engage with the card slot 509 provided in the card plate 502, so that the card rod 508 limits the card plate 502, and at the same time, the end of the circuit board can be fixed inside the mounting block 4 through the pressure plate 505.

[0028] Specifically, Figure 1 , Figure 2 , Figure 4 and Fig.10As shown, the adjusting mechanism 3 includes a rotating block 301 and a worm 307, the rotating plate 2 is rotatably connected with the rotating block 301, the rotating block 301 is fixedly mounted with a worm 307, the worm 307 is meshed with a worm wheel 306, the worm wheel 306 is fixedly connected with a lead screw 302, the lead screw 302 is threadedly connected with a bottom plate 305, the bottom plate 305 is fixedly mounted with a slider 304, the rotating plate 2 is fixedly connected with a limit plate 303, the slider 304 is slidably connected with the limit plate 303, the lead screw 302 and the worm 307 are both rotatably connected with the rotating plate 2, the slider 304 is located at the bottom end of the bottom plate 305, and the adjusting mechanism 3 is rotated using a tool to drive a mounting block 4 to slide on the top end of the rotating plate 2, so that the distance between the two mounting blocks 4 can be adjusted according to the length of the circuit board, that is: after both ends of the circuit board are fixed, The operator can use a tool to rotate the rotating block 301 provided on the rotating plate 2. When the rotating block 301 rotates along the top of the rotating plate 2, it can drive the worm 307 fixed thereto to rotate inside the rotating plate 2. The worm 307 is meshed with a worm wheel 306. When the worm wheel 306 rotates, it drives the screw rod 302 fixed thereto to rotate. Since the screw rod 302 is threadedly connected with a bottom plate 305, when the screw rod 302 rotates along the rotating plate 2, it can drive the bottom plate 305 to move. A slider 304 is installed at the bottom end of the bottom plate 305. The slider 304 is limited by the limiting plate 303 fixed on the rotating plate 2. The bottom plate 305 can only be driven to slide by the driving force of the screw rod 302. The bottom plate 305 is displaced, so that the distance between the two mounting blocks 4 is changed, and then the position of the bottom plate 305 can be adjusted according to the length of the circuit board, so as to facilitate the bending test of the circuit board.

[0029] Specifically, Figure 1 , Figure 3 , Figure 5 , Figure 8 and Fig. 9As shown, the guide mechanism 6 includes a fixed plate 601 and a connecting plate 602, the testing machine body 1 is fixedly connected with the fixed plate 601, the fixed plate 601 is fixedly installed with the connecting plate 602, the connecting plate 602 is fixedly installed with a connecting rod 608, the connecting rod 608 is provided with a plurality of balls 607, the connecting rod 608 is sleeved with a support plate 603, the connecting rod 608 is threadedly connected with a fixed rod 604, the support plate 603 is provided with a slide groove 606 and a plurality of sockets 605, the plurality of sockets 605 are equidistantly arranged inside the support plate 603, the socket 605 is threadedly installed with a long rod 7, and the plurality of balls 607 are equidistantly arranged. The ball bearing 607 is in rolling connection with the support plate 603 inside the connecting rod 608, the fixing rod 604 and the connecting rod 608 are both arranged in a T-shaped structure, and the bottom end of the fixing rod 604 is in contact with the support plate 603, the long rod 7 is located at the end of the support plate 603 away from the fixing rod 604, and the long rod 7 is threadedly connected with the support plate 603, and the rotating guide mechanism 6 can drive the long rod 7 to rotate, and then the position of the long rod 7 can be adjusted, and the rotating plate 2 drives a mounting block 4 to rotate, so that the circuit board can contact the side wall of the long rod 7, so as to facilitate the bending test of the circuit board, that is: during the test, the long rod 7 is threadedly installed to the plug provided on the support plate 603 The hole 605 is located at the position of the long rod 7, and there are multiple sockets 605, which can facilitate the adjustment of the position of the long rod 7 during the test; then rotate the fixing rod 604, because the fixing rod 604 is threadedly connected to the connecting rod 608 fixed on the connecting plate 602, when it is separated from the connecting rod 608, the support plate 603 can be dragged or rotated along the connecting plate 602, and because the support plate 603 is sleeved on the connecting rod 608, when it slides or rotates, it generates friction with the connecting rod 608. After determining the position of the support plate 603, the fixing rod 604 can be reinstalled on the connecting rod 608. When the fixing rod 604 is rotated to a state of conflict with the support plate 603, the position of the support plate 603 can be adjusted. Fix; when the support plate 603 drives the long rod 7 to slide or rotate, the side wall of the circuit board can contact the long rod 7. At this time, the control switch of the testing machine body 1 can be turned on, and the motor arranged inside it can drive the rotating plate 2 to rotate. During the rotation of the rotating plate 2, the mounting block 4 at the top is driven to rotate, thereby rotating one end of the circuit board. When rotating, the circuit board rotates along the long rod 7. Since a sensor is installed on the testing machine body 1, when the rotating plate 2 rotates close to the end of the rotating block 301 to contact the sensor, the machine can automatically count, and automatically stop and save data when the set number of times is reached or a fault occurs, thereby facilitating the flexural resistance and bending life detection test of the circuit board.

[0030] When the present invention is used, first, when fixing the two ends of the flexible circuit board, the operator can first put the ends of the circuit board into the two mounting blocks 4 respectively, and then rotate the connecting block 504 by hand. The connecting block 504 rotates along the top of the mounting block 4, which can drive the rotating rod 507 fixedly connected thereto to rotate. Since the end of the rotating rod 507 is threadedly connected with the clamping rod 508, when the rotating rod 507 rotates along the inner wall of the mounting block 4, the clamping rod 508 can slide along its side wall toward the direction of the connecting block 504, and then the clamping rod 508 can slide from the clamping plate 502 into the mounting block 4. At this time, the operator pushes the pull block 501 fixed at the end of the card plate 502 by hand, so that the card plate 502 can drive the pressure plate 505 fixed at the other end to slide. The pressure plate 505 and the mounting block 4 are both bonded with rubber pads 506. When the rubber pad 506 on the pressure plate 505 contacts the end of the circuit board placed in the mounting block 4, the connecting block 504 can be rotated in the direction, and the rotating rod 507 drives the card rod 508 to engage with the card slot 509 provided in the card plate 502, so that the card rod 508 limits the card plate 502, and at the same time, the end of the circuit board can be fixed inside the mounting block 4 through the pressure plate 505;

[0031] After both ends of the circuit board are fixed, the operator can use a tool to rotate the rotating block 301 provided on the rotating plate 2. When the rotating block 301 rotates along the top of the rotating plate 2, it can drive the worm 307 fixed thereto to rotate inside the rotating plate 2. The worm 307 is meshed with a worm wheel 306. When the worm wheel 306 rotates, it drives the screw rod 302 fixed thereto to rotate. Since the screw rod 302 is threadedly connected with a bottom plate 305, when the screw rod 302 rotates along the rotating plate 2, it can drive the bottom plate 305 to move. A slider 304 is installed at the bottom end of the bottom plate 305. The slider 304 is limited by the limit plate 303 fixed on the rotating plate 2. The bottom plate 305 can only be driven to slide by the driving force of the screw rod 302. The bottom plate 305 is displaced, so that the distance between the two mounting blocks 4 changes, and then the position of the bottom plate 305 can be adjusted according to the length of the circuit board, so as to facilitate the bending test of the circuit board.

[0032] During the test, the long rod 7 is threadedly installed on the socket 605 provided on the support plate 603, and there are multiple sockets 605, which can facilitate the adjustment of the position of the long rod 7 during the test; then the fixing rod 604 is rotated. Since the fixing rod 604 is threadedly connected to the connecting rod 608 fixed on the connecting plate 602, when it is separated from the connecting rod 608, the support plate 603 can be dragged or rotated along the connecting plate 602. Since the support plate 603 is sleeved on the connecting rod 608, when it slides or rotates, it will generate friction with the connecting rod 608. After determining the position of the support plate 603, the fixing rod 604 can be reinstalled on the connecting rod 608. When the fixing rod 604 is rotated to a state of conflict with the support plate 603, The position of the support plate 603 can be fixed; when the support plate 603 drives the long rod 7 to slide or rotate, the side wall of the circuit board can contact the long rod 7. At this time, the control switch of the testing machine body 1 can be turned on, and the motor arranged inside it can drive the rotating plate 2 to rotate. During the rotation of the rotating plate 2, the mounting block 4 at the top is driven to rotate, thereby rotating one end of the circuit board. When rotating, the circuit board rotates along the long rod 7. Since a sensor is installed on the testing machine body 1, when the rotating plate 2 rotates close to the end of the rotating block 301 to contact the sensor, the machine can automatically count, and automatically stop and save data when the set number of times is reached or a fault occurs, thereby facilitating the flexural resistance and bending life detection test of the circuit board.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] 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 pre-bending jig for a flexible circuit board with a positioning function, characterized in that: The test machine comprises a test machine body (1), a rotating plate (2) being rotatably connected to the test machine body (1); an adjusting mechanism (3) being mounted on the rotating plate (2); a guiding mechanism (6) being fixedly mounted on the test machine body (1); a mounting block (4) being fixedly mounted on both the adjusting mechanism (3) and the guiding mechanism (6); a positioning mechanism (5) being slidably mounted on the mounting block (4); and a long rod (7) being mounted on the guiding mechanism (6); The positioning mechanism (5) comprises a pulling block (501) and a clamping plate (502); the mounting block (4) is slidably connected to the clamping plate (502); the pulling block (501) is fixedly mounted on the clamping plate (502); a plurality of clamping grooves (509) are equidistantly arranged on the clamping plate (502); a limiting block (503) is fixedly connected to the mounting block (4); a clamping rod (508) is clamped and connected to the clamping plate (502); a rotating rod (507) is threadedly connected to the clamping rod (508); the rotating rod (507) is rotationally connected to the mounting block (4); a connecting block (504) is fixedly mounted on the rotating rod (507); a pressing plate (505) is fixedly connected to the clamping plate (502); and rubber pads (506) are bonded to both the mounting block (4) and the pressing plate (505); The clamping plate (502) is slidably connected to the limiting block (503); the pressing plate (505) is located at an end of the clamping plate (502) away from the pulling block (501); and the pressing plate (505) is slidably connected to the mounting block (4); A clamping rod (508) is mounted in the clamping slot (509), the clamping rod (508) is slidably connected to the mounting block (4), and the connecting block (504) is rotationally connected to the mounting block (4); The adjusting mechanism (3) comprises a rotating block (301) and a worm (307); the rotating plate (2) is rotatably connected to the rotating block (301); the rotating block (301) is fixedly mounted to the worm (307); the worm (307) is meshed with a worm wheel (306); the worm wheel (306) is fixedly connected to a lead screw (302); the lead screw (302) is threadedly connected to a bottom plate (305); a slider (304) is fixedly mounted to the bottom plate (305); the rotating plate (2) is fixedly connected to a limit plate (303); and the slider (304) is slidably connected to the limit plate (303); The guide mechanism (6) comprises a fixed plate (601) and a connecting plate (602); the fixed plate (601) is fixedly connected to the testing machine body (1); the connecting plate (602) is fixedly mounted on the fixed plate (601); a connecting rod (608) is fixedly mounted on the connecting plate (602); a plurality of balls (607) are provided on the connecting rod (608); a supporting plate (603) is sleeved on the connecting rod (608); a fixed rod (604) is threadedly connected to the connecting rod (608); and a sliding groove (606) and a plurality of sockets (605) are provided on the supporting plate (603).

2. The pre-bending jig for a flexible circuit board with a positioning function according to claim 1, characterized in that: The lead screw (302) and the worm (307) are both rotatably connected to the rotating plate (2), and the sliding block (304) is located at the bottom end of the bottom plate (305).

3. The pre-bending jig for a flexible circuit board with a positioning function according to claim 1, characterized in that: A plurality of the insertion holes (605) are equidistantly arranged inside the support plate (603), and a long rod (7) is threadedly mounted on the insertion holes (605).

4. The pre-bending jig for a flexible circuit board with a positioning function according to claim 1, characterized in that: A plurality of the balls (607) are equidistantly arranged inside the connecting rod (608), and the balls (607) are rollingly connected to the support plate (603).

5. The pre-bending jig for a flexible circuit board with a positioning function according to claim 1, characterized in that: The fixing rod (604) and the connecting rod (608) are both arranged in a T-shaped structure, and the bottom end of the fixing rod (604) is in contact with the supporting plate (603).

6. The pre-bending jig for a flexible circuit board with a positioning function according to claim 1, characterized in that: The long rod (7) is located at one end of the support plate (603) away from the fixed rod (604), and the long rod (7) is threadedly connected to the support plate (603).

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