Defect detection device for polyimide film production

Abstract

The invention relates to the technical field of transparency detection, and discloses a polyimide film production defect detection device which comprises a base A. Clamping seats are fixedly connected to the two sides of the top of the base A. A glass plate is fixedly connected to the side, close to a main detection head, of the top of the base A. A bearing frame is slidably connected to the top of the base A. A limiting frame is fixedly connected to the top of the bearing frame, sliding grooves are formed in the inner top wall and the inner bottom wall of the limiting frame, two mounting frames are slidably connected between the sliding grooves, mounting frames are slidably connected into the mounting frames, mounting bases are fixedly connected to the sides, close to the glass plate, of the mounting frames, and two rotating rods are rotatably connected to the sides, close to the glass plate, of the mounting bases in an embedded mode; according to the defect detection device for polyimide film production, the problem that when a traditional device is used for detecting the light transmittance of a polyimide film, the position of a polyimide film sample is likely to deviate due to external factors, and the final detection result is affected can be solved.

Description

Technical Field

[0001] The present invention relates to the field of transparency detection technology, in particular to a defect detection device for polyimide film production. Background Art

[0002] Polyimide film, also known as PI film, is mainly used in the production of cable insulation materials, thermal insulation materials, radiation protection materials, recording carrier materials and flexible printed circuit board materials. With the development of society, polyimide film has become an important material in the power, electrical appliances, microelectronics and precision machinery industries. During the production process of polyimide film, multiple defect tests are required to ensure that the polyimide film is qualified and can be used normally.

[0003] When conducting various defect inspections on polyimide films, transmittance testing is generally performed to ensure its performance quality in optical fields, electronic devices and other applications. When conducting transmittance inspections on polyimide films, the main equipment used is a transmittance tester. The transmittance tester is mainly based on the principle of light transmission and performs transmittance inspection on the object to be tested. The transmittance tester is generally equipped with a bracket, two detection heads and a host. Among the two detection heads, one is mainly used to emit light, and the other is mainly used to receive light. By fixing the two detection heads on both sides of the bracket respectively, the polyimide film sample to be inspected is placed between the two detection heads, and then one of the detection heads emits light, and the other detection head receives the light passing through the polyimide film sample and transmits the signal to the host. After analysis, the host will display the analysis results on the display screen. At this time, the staff can directly know the transmittance of the polyimide film sample currently being inspected to determine whether the polyimide film is a qualified product.

[0004] When using a transmittance tester to test the transmittance of a polyimide film, it is necessary to ensure that the polyimide film is perpendicular to the light source. However, due to its light and thin characteristics, when the polyimide film is placed vertically in the middle of the transmittance tester's bracket, it is easy to be offset by external factors. At this time, the vertical state between the polyimide film and the light source is destroyed, which will affect the final result of the polyimide film transmittance test. For this reason, we propose a defect detection device for polyimide film production. Summary of the Invention

[0005] The object of the present invention is to provide a defect detection device for polyimide film production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a defect detection device for polyimide film production, comprising a base A, both sides of the top of the base A are fixedly connected to clamping seats, the clamping seats are provided with fixing openings, a main detection head and an auxiliary detection head are respectively inserted into the fixing openings of the two clamping seats, a glass plate is fixedly connected to the top of the base A on the side close to the main detection head, a load-bearing frame is slidably connected to the top of the base A, the load-bearing frame is located between the glass plate and the auxiliary detection head, the top of the load-bearing frame is fixedly connected to a limiting frame, the inner top wall and the inner bottom wall of the limiting frame are provided with sliding grooves, and two mounting frames are slidably connected between the sliding grooves;

[0007] A mounting frame is slidably connected in the mounting frame, a mounting seat is fixedly connected to a side of the mounting frame close to the glass plate, and two rotating rods are rotatably connected to a side of the mounting seat close to the glass plate, and a belt is provided between the two rotating rods.

[0008] Preferably, a docking frame is fixedly connected to the side of the top of the limit frame away from the glass plate, and a connecting groove is provided on the side of the docking frame close to the limit frame. The connecting groove is connected to the sliding groove of the top wall of the limit frame, and a magnet block is fixedly connected to the connecting groove, and a gap is provided between the magnet block and the inner wall of the connecting groove.

[0009] Preferably, a fixing bracket is fixedly connected to the top of the mounting bracket on one side close to the docking bracket, and a metal plate is fixedly connected to the end of the fixing bracket away from the mounting bracket. The metal plates on the two mounting brackets are respectively located on both sides of the magnet block, and the width of the gap between the magnet block and the inner wall of the connecting groove is the same as the thickness of the metal plate.

[0010] Preferably, a receiving groove is provided on the inner wall of the docking frame, a limiting block is slidably connected to the receiving groove, a plurality of fixed springs are fixedly connected between the limiting block and the inner wall of the receiving groove, inclined guide surfaces are provided at both ends of the limiting block, and the side of the limiting block away from the fixed spring is in contact with the magnet block and the metal plate.

[0011] Preferably, both inner walls of the chute are fixedly connected to limit springs, and one end of the limit spring away from the inner wall of the chute is fixedly docked with the mounting frame on the same side thereof.

[0012] Preferably, one side of the bottom of the base A is rotatably connected to the base B, a mounting opening is provided on the base B, and a fixing seat is rotatably connected in the mounting opening.

[0013] Preferably, a host is slidably connected in the fixing seat, and the host is connected to the main detection head and the auxiliary detection head respectively through data cables. A display screen and control buttons are respectively provided on the host.

[0014] Preferably, an arc-shaped limit groove B is opened on one side of the base B, and the side of the base B close to the limit groove B is rotatably connected to the limit rod, and a slider is fixedly connected to the limit rod. The slider on the limit rod is located in the limit groove B and is slidably connected to it.

[0015] Preferably, an arc-shaped limiting groove A is provided on one side of the base A close to the limiting groove B, the limiting groove A and the limiting groove B are connected to each other, and the arc centers of the limiting groove A and the limiting groove B are aligned with the rotation axis position of the limiting rod.

[0016] Preferably, an installation groove is provided on the inner top wall of the fixing port, a rubber pad is slidably connected in the installation groove, a screw is threadedly connected to the top of the clamp seat, the bottom end of the screw is fixedly docked with the rubber pad, and a knob is fixedly connected to the top end of the screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention laminates a polyimide film sample onto a glass plate, and then manually pushes the load-bearing frame to move the limit frame toward the glass plate until the belt is in contact with the polyimide film sample on the glass plate. The belt is then squeezed continuously, and the force generated by the squeezing causes the metal plate and the magnet block to be misaligned. At this time, the magnet block loses its adsorption of the metal plate, and the limit spring begins to contract, driving the mounting frame to move toward both sides of the limit frame. At this time, the rotating rod cooperates with the belt to smooth the polyimide film sample during the process of clamping the polyimide film sample, making its surface smoother. This avoids the problem that, when performing transmittance testing on the polyimide film using a traditional device, the polyimide film sample is easily displaced due to external factors, thereby affecting the final test result.

[0019] 2. After the detection is completed, the operator pinches the two installation frames with his hands and pulls the load-bearing frame back. At this time, the load-bearing frame is separated from the glass plate, and the two installation frames are closed by using the force of the fingers. When the metal plate moves to both sides of the limit block, the limit block will be squeezed into the receiving groove through the inclined surfaces at both ends of the limit block. Then the metal plate and the limit block are fitted together, and then the fixed spring starts to rebound, driving the limit block to extend out of the receiving groove, and using the limit block to push the metal plate to both sides of the magnet block. At this time, the metal plate can be adsorbed by the magnet block, thereby limiting the installation frame, making it convenient to carry out the transmittance detection work of the next polyimide film sample, effectively improving the auxiliary performance of the device for detecting multiple polyimide film samples;

[0020] 3. When using the device of the present invention, the limit rod can be rotated to move the slider on it into the limit groove B. At this time, the limit between the base A and the base B disappears. The base B is rotated to make it parallel to the base A. Then the main unit can be placed on the fixed seat, and the inclination angle of the main unit can be adjusted through the rotating structure of the fixed seat. This avoids the problem that when testing multiple polyimide film samples, the staff needs to hold the main unit with one hand and operate the samples with the other hand, which causes more troublesome operation. This further improves the auxiliary function of the device for the staff in performing transmittance detection on polyimide film samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the expanded structure of the base B of the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom structure of the base B of the present invention;

[0024] Figure 4 This is a schematic diagram of the limiting frame structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection structure between the mounting frame and the mounting base of the present invention;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the docking frame of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the storage tank of the present invention;

[0028] Figure 8 For the present invention Figure 5 The enlarged structural diagram of area A is shown;

[0029] Figure 9 For the present invention Figure 6 The enlarged structural diagram of area B is shown;

[0030] Figure 10 For the present invention Figure 7 Schematic diagram of the enlarged structure of region C is shown.

[0031] In the figure: 1. Base A; 11. Limiting slot A; 2. Base B; 21. Limiting slot B; 22. Limiting rod; 23. Mounting port; 24. Fixed seat; 3. Clamping seat; 31. Fixed port; 32. Mounting slot; 33. Screw; 34. Rubber pad; 35. Knob; 4. Main unit; 41. Main detection head; 42. Auxiliary detection head; 5. Glass plate; 6. Load-bearing frame; 61. Limiting frame; 62. Slide; 63. Limiting spring; 64. Mounting frame; 7. Docking frame; 71. Connecting slot; 72. Magnet block; 73. Storage slot; 74. Limiting block; 75. Fixed spring; 8. Mounting frame; 81. Mounting seat; 82. Rotating rod; 83. Belt; 84. Fixed frame; 85. Metal plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-10The present invention provides a technical solution: a defect detection device for polyimide film production, comprising a base A1, both sides of the top of the base A1 are fixedly connected to a clamping seat 3, the clamping seat 3 is provided with a fixing port 31, and a main detection head 41 and an auxiliary detection head 42 are respectively inserted into the fixing ports 31 of the two clamping seats 3, the main detection head 41 is a component for receiving light, and the auxiliary detection head 42 is a component for emitting light. When the light is emitted by the auxiliary detection head 42, it will be received by the main detection head 41 when passing through the polyimide film sample. At this time, the main detection head 41 is The received light data can be transmitted to finally complete the detection of the light transmittance of the polyimide film sample. The top of the base A1 is fixedly connected to a glass plate 5 on one side close to the main detection head 41. The top of the base A1 is slidably connected to a load-bearing frame 6. The load-bearing frame 6 is located between the glass plate 5 and the auxiliary detection head 42. The top of the load-bearing frame 6 is fixedly connected to a limit frame 61. The inner top wall and the inner bottom wall of the limit frame 61 are provided with a slide groove 62. Two mounting frames 64 are slidably connected between the slide grooves 62. An installation frame 64 is slidably connected inside. The mounting frame 8 is fixedly connected to a mounting seat 81 on the side close to the glass plate 5. The mounting seat 81 is connected to two rotating rods 82 on the side close to the glass plate 5. A belt 83 is provided between the two rotating rods 82. The top of the limiting frame 61 is fixedly connected to the side away from the glass plate 5. The docking frame 7 is provided with a connecting groove 71 on the side close to the limiting frame 61. The connecting groove 71 is connected to the slide groove 62 on the top wall of the limiting frame 61. A magnet block 72 is fixedly connected to the connecting groove 71. The magnet block 72 is connected to the connecting groove 71. A gap is provided between the inner walls of the connecting groove 71. A fixing bracket 84 is fixedly connected to the top of the mounting bracket 8 near the side of the docking bracket 7. A metal plate 85 is fixedly connected to the end of the fixing bracket 84 away from the mounting bracket 8. The metal plates 85 on the two mounting brackets 8 are respectively located on both sides of the magnet block 72. The width of the gap between the magnet block 72 and the inner wall of the connecting groove 71 is the same as the thickness of the metal plate 85. The inner walls of both ends of the sliding groove 62 are fixedly connected to the limiting spring 63. The end of the limiting spring 63 away from the inner wall of the sliding groove 62 is fixedly docked with the mounting frame 64 on the same side thereof.

[0034] Furthermore, when using the device, the main detection head 41 and the auxiliary detection head 42 are respectively placed in the fixing opening 31 of the clamping seat 3 at the corresponding positions and fixed. Then, the polyimide film sample to be detected is attached to the glass plate 5, and then the load-bearing frame 6 is manually pushed to move the limit frame 61 toward the glass plate 5. When the belt 83 is attached to the polyimide film sample on the glass plate 5, the limit frame 61 is continued to be pushed and a certain pressure is applied to the limit frame 61. At this time, the mounting frame 8 is subjected to pressure and begins to move along the mounting frame 64. At this time, the mounting frame 8 will drive the metal plate 85 to move together. When the metal plate 85 is misaligned with the magnet block 72, the adsorption of the magnet block 72 on the metal plate 85 disappears. At this time, the limit spring 63 on one side of the mounting frame 64 begins to contract, driving the mounting frame 64 connected thereto to move along the slide slot 62, so that the two mounting frames 64 are separated from each other. In this process, due to the belt 8 3 is attached to the polyimide film sample on the glass plate 5. During the movement of the mounting frame 64, the mounting frame 8 is driven to move, and the mounting frame 8 is driven to move the mounting seat 81. At this time, the belt 83 starts to rotate along the two rotating rods 82. During this process, the polyimide film sample attached to the glass plate 5 can be stretched and smoothed by the belt 83. After that, when the mounting frame 64 moves to the end of the slide groove 62, the belt 83 is attached to both sides of the polyimide film sample and cooperates with the glass plate 5 to clamp the polyimide film sample attached to the glass plate 5 to make it flat for transmittance detection. After that, the auxiliary detection head 42 is turned on to emit light. After the light passes through the polyimide film sample and the glass plate 5, the main detection head 41 receives the light and detects the transmittance of the polyimide film sample based on the result of the light.

[0035] Combined with attachment Figure 4 、 Figure 6 、 Figure 7 、 Figure 9 and Figure 10 As shown, a receiving groove 73 is provided on the inner wall of the docking frame 7, and a limiting block 74 is slidably connected to the receiving groove 73. A plurality of fixing springs 75 are fixedly connected between the limiting block 74 and the inner wall of the receiving groove 73. Both ends of the limiting block 74 are provided with inclined guide surfaces, and the side of the limiting block 74 away from the fixing spring 75 is in contact with the magnet block 72 and the metal plate 85.

[0036] After the cam 75 is in the closed position, the locking cam 73 is in the closed position, and the locking cam 73 is in the closed position, so that the cam 73 is locked and the locking cam 73 is locked. , it can move toward the limit block 74. When the metal plate 85 is in contact with the inclined guide surfaces on both sides of the limit block 74, it will squeeze the limit block 74 along the guide surface, making it move toward the storage groove 73. When the metal plate 85 is in contact with the surface of one side of the limit block 74 close to the magnet block 72, the rebound force of the fixed spring 75 will push the metal plate 85 through the limit block 74, and at this time drive the mounting frame 8 to slide along the mounting frame 64 and make the metal plate 85 in contact with both sides of the magnet block 72. At this time, the magnet block 72 will adsorb the metal plate 85 and thereby limit the position of the mounting frame 64. At this time, the device reset work can be completed, which is convenient for the subsequent transmittance detection of the polyimide film sample.

[0037] Combined with attachment Figure 1 、 Figure 2 and Figure 3 As shown, the bottom side of the base A1 is rotatably connected to the base B2, and the base B2 is provided with a mounting port 23, and a fixing seat 24 is rotatably connected in the mounting port 23. The host 4 is slidably connected in the fixing seat 24, and damping pads are added between the two sides of the fixing seat 24 and the inner wall of the mounting port 23. The damping effect of the damping pad can improve the stability of the fixing seat 24 when the host 4 is placed on the fixing seat 24. The host 4 is connected to the main detection head 41 and the auxiliary detection head 42 respectively through the data line, and the host 4 is provided with a display Screen and control buttons, an arc-shaped limit groove B21 is provided on one side of the base B2, and the side of the base B2 close to the limit groove B21 is rotatably connected to the limit rod 22, and a slider is fixedly connected to the limit rod 22, and the slider on the limit rod 22 is located in the limit groove B21 and is slidably connected thereto, and an arc-shaped limit groove A11 is provided on the side of the base A1 close to the limit groove B21, and the limit groove A11 is connected to the limit groove B21, and the arc centers of the limit groove A11 and the limit groove B21 are aligned with the rotation axis position of the limit rod 22.

[0038] Furthermore, when using the device, the limit rod 22 is rotated so that the slider thereon slides from the limit slot A11 into the limit slot B21. At this time, the limiting effect between the base A1 and the base B2 disappears, and the base B2 can be rotated so that it is in a horizontally expanded state with the base A1. Then, the base A1 and the base B2 are placed squarely on the operating table, and then the host 4 is clamped on the fixing seat 24, and the fixing seat 24 is rotated. The inclination angle of the host 4 is adjusted according to the height of the operator's viewing angle so that its angle is more convenient for the operator to watch. When the polyimide film sample is then tested, the relevant operation control can be performed through the control buttons on the host 4. Then the main detection head 41 will transmit the test results to the host 4. The host 4 analyzes the data and displays the final test transmittance result on the display screen for the staff to view.

[0039] It is worth noting that damping pads are added between the two sides of the fixing seat 24 and the inner wall of the installation opening 23. Through the damping effect of the damping pads, when the host 4 is placed on the fixing seat 24, the fixing seat 24 can be rotated. The fixing seat 24 will not rotate on its own due to the offset of the center of gravity of the host 4, affecting the stability of the host 4.

[0040] Combined with attachment Figure 3 As shown, the inner top wall of the fixing port 31 is provided with a mounting groove 32, a rubber pad 34 is slidably connected in the mounting groove 32, the top of the clamping seat 3 is threadedly connected with a screw rod 33, the bottom end of the screw rod 33 is fixedly docked with the rubber pad 34, and the top end of the screw rod 33 is fixedly connected with a knob 35.

[0041] When the cam 33 is in the closed position, the cam 33 is in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the open position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position,

[0042] Working principle: When using this device, rotate the limiting rod 22 so that the slider on it slides from the limiting slot A11 into the limiting slot B21. At this time, the limiting effect between the base A1 and the base B2 disappears, and the base B2 can be rotated to be horizontally unfolded with the base A1. Then, the base A1 and the base B2 are placed squarely on the operating table. Then, the main unit 4 is clamped on the fixing seat 24, and the fixing seat 24 is rotated. The tilt angle of the main unit 4 is adjusted according to the operator's viewing angle height;

[0043] Then, the main detection head 41 and the auxiliary detection head 42 are placed in the fixing opening 31 of the clamping base 3 at the corresponding positions respectively. The screw 33 is driven to rotate by the knob 35. During the rotation process, the screw 33 can drive the rubber pad 34 to descend. When the rubber pad 34 fits on the top of the main detection head 41 and the auxiliary detection head 42, the main detection head 41 and the auxiliary detection head 42 can be clamped, thereby fixing the main detection head 41 and the auxiliary detection head 42;

[0044] After that, the polyimide film sample to be tested is attached to the glass plate 5, and then the load-bearing frame 6 is manually pushed to make the limit frame 61 move toward the glass plate 5. When the belt 83 is attached to the polyimide film sample on the glass plate 5, the limit frame 61 is continued to be pushed, and a certain pressure is applied to the limit frame 61. At this time, the mounting frame 8 is under pressure and begins to move along the mounting frame 64. At this time, the mounting frame 8 will drive the metal plate 85 to move together. When the metal plate 85 is misaligned with the magnet block 72, the adsorption of the magnet block 72 on the metal plate 85 disappears. At this time, the limit spring 63 on one side of the mounting frame 64 begins to contract, driving the mounting frame 64 connected thereto to move along the slide slot 62, so that the two mounting frames 64 are separated from each other. In this process, since the belt 83 is attached to the polyimide film sample on the glass plate 5, the mounting frame 8 will be driven to move during the movement of the mounting frame 64. The mounting frame 8 will drive the mounting seat 81 to move, and the belt 83 will start to rotate along the two rotating rods 82. During this process, the polyimide film sample attached to the glass plate 5 can be stretched and smoothed by the belt 83. After that, when the mounting frame 64 moves to the end of the slide groove 62, the belt 83 will be attached to both sides of the polyimide film sample and cooperate with the glass plate 5 to clamp the polyimide film sample attached to the glass plate 5 so that it is in a flat state for transmittance detection. Then, the auxiliary detection head 42 is turned on to emit light. After the light passes through the polyimide film sample and the glass plate 5, the main detection head 41 receives the light, and then the main detection head 41 transmits the detection result to the host 4. The host 4 analyzes the data and displays the final transmittance result on the display screen for the staff to view.

[0045] After the transmittance test of the current polyimide film sample is completed, the staff pinches the two mounting frames 64 with their fingers, brings the two mounting frames 64 closer to each other, and stretches the limit spring 63. When the mounting frame 64 moves, it can drive the mounting frame 8 and the metal plate 85 to move synchronously. During the movement, the metal plate 85 can move toward the limit block 74. When the metal plate 85 fits the inclined guide surfaces on both sides of the limit block 74, it will squeeze the limit block 74 along the guide surface, causing it to move toward the receiving groove 73. When the metal plate 85 is in contact with the surface of the limit block 74 close to the magnet block 72, the rebound force of the fixed spring 75 will push the metal plate 85 through the limit block 74, and then drive the mounting frame 8 to slide along the mounting frame 64, and make the metal plate 85 fit on both sides of the magnet block 72. At this time, the magnet block 72 will adsorb the metal plate 85 and limit the position of the mounting frame 64. At this time, the device reset work can be completed, and the operation can be repeated to perform transmittance detection on subsequent polyimide film samples.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A defect detection device for polyimide film production, comprising a base A (1), wherein both sides of the top of the base A (1) are fixedly connected to clamping seats (3), each of the clamping seats (3) is provided with a fixing port (31), and a main detection head (41) and an auxiliary detection head (42) are respectively inserted into the fixing ports (31) of the two clamping seats (3), characterized in that: A glass plate (5) is fixedly connected to the top of the base A (1) near the main detection head (41), and a load-bearing frame (6) is slidably connected to the top of the base A (1). The load-bearing frame (6) is located between the glass plate (5) and the auxiliary detection head (42). The top of the load-bearing frame (6) is fixedly connected to a limiting frame (61). Slide grooves (62) are provided on the inner top wall and the inner bottom wall of the limiting frame (61). Two mounting frames (64) are slidably connected between the slide grooves (62). A mounting frame (8) is slidably connected within the mounting frame (64); a mounting seat (81) is fixedly connected to a side of the mounting frame (8) close to the glass plate (5); two rotating rods (82) are rotatably engaged with the side of the mounting seat (81) close to the glass plate (5); a belt (83) is provided between the two rotating rods (82).

2. A defect detection device for polyimide film production according to claim 1, characterized in that: A docking frame (7) is fixedly connected to the side of the top of the limiting frame (61) away from the glass plate (5); a connecting groove (71) is provided on the side of the docking frame (7) close to the limiting frame (61); the connecting groove (71) and the sliding groove (62) on the top wall of the limiting frame (61) are connected to each other; a magnet block (72) is fixedly connected to the connecting groove (71); a gap is provided between the magnet block (72) and the inner wall of the connecting groove (71).

3. The defect detection device for polyimide film production according to claim 2, characterized in that: A fixing frame (84) is fixedly connected to one side of the top of the mounting frame (8) close to the docking frame (7), and a metal plate (85) is fixedly connected to one end of the fixing frame (84) away from the mounting frame (8). The metal plates (85) on the two mounting frames (8) are respectively located on both sides of the magnet block (72), and the width of the gap between the magnet block (72) and the inner wall of the connecting groove (71) is the same as the thickness of the metal plate (85).

4. The defect detection device for polyimide film production according to claim 3, characterized in that: The inner wall of the docking frame (7) is provided with a receiving groove (73), a limiting block (74) is slidably connected in the receiving groove (73), a plurality of fixing springs (75) are fixedly connected between the limiting block (74) and the inner wall of the receiving groove (73), both ends of the limiting block (74) are provided with inclined guide surfaces, and the side of the limiting block (74) away from the fixing spring (75) is in contact with the magnet block (72) and the metal plate (85).

5. The defect detection device for polyimide film production according to claim 1, characterized in that: The inner walls at both ends of the slide groove (62) are fixedly connected to the limit spring (63), and the end of the limit spring (63) away from the inner wall of the slide groove (62) is fixedly docked with the installation frame (64) on the same side thereof.

6. The defect detection device for polyimide film production according to claim 1, characterized in that: One side of the bottom of the base A (1) is rotatably connected to a base B (2), a mounting opening (23) is provided on the base B (2), and a fixing seat (24) is rotatably connected in the mounting opening (23).

7. The defect detection device for polyimide film production according to claim 6, characterized in that: A host (4) is slidably connected in the fixing seat (24), and the host (4) is connected to a main detection head (41) and an auxiliary detection head (42) via data cables. A display screen and control buttons are respectively provided on the host (4).

8. The defect detection device for polyimide film production according to claim 6, characterized in that: An arc-shaped limiting groove B (21) is provided on one side of the base B (2). A side of the base B (2) close to the limiting groove B (21) is rotatably connected to a limiting rod (22). A slider is fixedly connected to the limiting rod (22). The slider on the limiting rod (22) is located in the limiting groove B (21) and is slidably connected thereto.

9. The defect detection device for polyimide film production according to claim 8, characterized in that: An arc-shaped limiting groove A (11) is provided on one side of the base A (1) close to the limiting groove B (21), and the limiting groove A (11) and the limiting groove B (21) are connected to each other, and the arc centers of the limiting groove A (11) and the limiting groove B (21) are aligned with the rotation axis position of the limiting rod (22).

10. The defect detection device for polyimide film production according to claim 1, characterized in that: The inner top wall of the fixing port (31) is provided with a mounting groove (32), a rubber pad (34) is slidably connected in the mounting groove (32), a screw rod (33) is threadedly connected to the top of the clamping seat (3), the bottom end of the screw rod (33) is fixedly docked with the rubber pad (34), and the top end of the screw rod (33) is fixedly connected to the knob (35).

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