A hole inspection device suitable for plates

Abstract

A hole inspection device suitable for a plate comprises a fixed part, a displacement part, a hole position checking part and a multi-hole checking part; the hole position checking part is in plurality and arranged on the fixed part; the displacement part is arranged on one side of the fixed part; the multi-hole checking part is arranged on the displacement part; the fixed part comprises two long bars, both of which are arranged on the ground through a bracket, and the two long bars are arranged on the ground opposite to each other; strip grooves are arranged on the end faces of the long bars close to each other along the length direction; strip holes are arranged on the top face of the long bars along the length direction, and the strip holes are connected to the strip grooves of the long bars. The utility model improves the hole inspection efficiency of the plate and reduces the labor intensity of the staff.

Description

Technical Field

[0001] The utility model relates to a hole checking device, in particular to a device capable of checking whether the number and positions of holes punched on a processed plate are correct, belonging to the technical field of plate hole checking equipment. Background Art

[0002] In the field of industrial processing, the use of metal sheets is huge. During this process, the sheets are processed according to the production needs of the processing plant, and then the processed products are sent to the assembly plant for assembly. During the processing, some processes require drilling holes at designated points on the sheet, and the accuracy of each hole position is high. Once an error is found, it will affect the subsequent assembly work. In the drilling process, there is a certain probability of wrong holes, multiple holes or fewer holes. Once the sheet with incorrect hole positions is transported to the assembly plant, it will affect the production progress. Therefore, it is necessary to verify the position and number of holes after the sheet is punched. At present, the verification of the hole positions of the sheet processing is judged by the naked eye. Due to the large number of hole positions on the sheet, the process of human eye verification has a certain error. As the working time goes by, the fatigue of the naked eye of the staff will increase the error rate, and the labor intensity of the staff is high. Therefore, a hole inspection device is needed, which is required to be able to efficiently verify the position and number of the sheet processing holes, thereby reducing the labor intensity of the staff. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a hole inspection device suitable for plates, which can not only reduce the labor intensity of workers but also improve the hole inspection efficiency and accuracy of processed plates.

[0004] The problem described in the utility model is solved by the following technical solutions:

[0005] A hole inspection device suitable for plate materials comprises a fixed part, a displacement part, a hole position verification part and a multi-hole verification part; the hole position verification parts are multiple in number and are arranged on the fixed part; the displacement part is arranged on one side of the fixed part; the multi-hole verification part is arranged on the displacement part; the fixed part comprises two long bars, both of which are arranged on the ground through brackets, and the two long bars are arranged on the ground opposite to each other; strip grooves are arranged on the end faces of the long bars close to each other along the length direction; strip holes are arranged on the top faces of the long bars along the length direction, and the strip holes are connected to the strip grooves of the long bars.

[0006] The above-mentioned hole inspection device suitable for plate materials, the hole position inspection part includes a cylinder, a hole inspection rod, a connecting plate, a side positioning plate, a cross beam and a connecting rod; a connecting plate is arranged on the end surface of the cylinder housing, and the cylinder piston rod passes through the connecting plate; two cross beams are arranged opposite to each other at both ends of the connecting plate, a sliding groove is arranged on the upper end surface of the connecting plate, and a sliding rail is arranged on the lower end surface of the cross beam, and the connecting plate is slidably arranged under the cross beam; a connecting rod is connected between the ends of the two cross beams, and a threaded hole is arranged at the center of the top end surface of the connecting rod; the end of the cylinder piston rod is provided with a hole inspection rod; the side positioning plate is arranged on the side wall of the connecting plate, and a threaded hole is arranged thereon, and the threaded hole of the side positioning plate through which the bolt passes touches the side wall of the cross beam; the connecting rods on both sides are respectively arranged in the strip grooves of the long bars on both sides, and the bolts are inserted into the threaded holes at the top end of the connecting rods after passing through the strip holes of the long bars.

[0007] The above-mentioned hole testing device suitable for plate materials, the displacement part includes a long base, a driving motor, a screw, a screw nut, a slide plate and a rotating motor; the long base is arranged on one side of the long bar, and the length direction line of the long base is parallel to the length direction line of the long bar; the upper end surface of the long base is provided with a strip groove along its length direction, one end of the strip groove at the top end of the long base is provided with a driving motor, and the other end is provided with a support plate, and one end of the screw is connected to the output shaft of the driving motor, and the other end of the screw is axially connected to the support plate; the screw nut is arranged on the screw, and the screw nut is located in the strip groove of the long base; the slide plate is slidably arranged on the top end surface of the long base, and it is connected to the screw nut; the rotating motor is arranged on the top end surface of the slide plate.

[0008] The above-mentioned hole inspection device is suitable for plate materials, and the multi-hole inspection part includes a vertical plate, a horizontal plate, a warning light, a lifting mechanism and a hole inspection mechanism; the vertical plate is arranged on the output shaft of the rotating motor; the horizontal plate is arranged on the top of the vertical plate; the warning light and the lifting mechanism are both arranged on the horizontal plate; the hole inspection mechanism is arranged on the lifting mechanism; the signal input end of the warning light is connected to the signal output end of the CPU.

[0009] The above-mentioned hole testing device is suitable for plates, and the lifting mechanism includes a guide plate, a screw and a square column; a vertical guide hole is arranged on the horizontal plate, and the guide plate passes through the guide hole on the horizontal plate; the bottom end of the guide plate is connected to the top end of the square column; the length direction line of the square column is parallel to the center line of the horizontal plate; a threaded hole is arranged on the upper end surface of the horizontal plate, and the screw passes through the threaded hole of the horizontal plate and is axially connected to the top end of the square column; the square column is located directly below the horizontal plate.

[0010] The above-mentioned hole inspection device is suitable for plate materials, and the hole inspection mechanism includes a hole inspection member, a sensing member and a blocking member; a square groove is provided at the bottom end of the square column; the number of the hole inspection members is multiple, and they are evenly arranged in the square groove at the bottom end of the square column along the length direction of the square column; the sensing member and the blocking member are both arranged on the side wall of the square column.

[0011] The above-mentioned hole inspection device is suitable for plate materials, and the hole inspection component includes a spring, a vertical displacement plate and a pressure block; the spring is arranged at the top of the inner wall of the square groove of the square column, and the bottom end of the spring is provided with a vertical displacement plate, and the vertical displacement plate is arranged inside the square groove of the square column; the bottom end of the vertical displacement plate is conical, and the width of the vertical displacement plate is smaller than the punching diameter of the plate material; the side wall of the square column is provided with strip holes, and the strip holes on the side wall of the square column are connected to the square groove of the square column; the pressure block is arranged at the top of the side wall of the vertical displacement plate, and the pressure block extends from the strip holes on the side wall of the square column.

[0012] The above-mentioned hole testing device suitable for plate materials, the sensing part includes a fixed plate, a pressure sensor and a pressure plate; the fixed plate is arranged on the side wall of the square column; the pressure sensor is arranged at the center of the upper end surface of the fixed plate; the pressure plate is located directly above the fixed plate, and a spring is connected between the pressure plate and the fixed plate; the pressure plate is located directly below the pressure block; the signal output end of the pressure sensor is connected to the signal input end of the CPU.

[0013] The above-mentioned hole inspection device suitable for plate materials, the number of the blocking members is two, and they are arranged oppositely at the two ends of the square column along the length direction of the square column; the blocking member includes a blocking rod and a guide plate; the guide plate is arranged at one end of the square column, and a slide rail is arranged on the end surface of the square column; a slide groove is arranged on the blocking rod, and the blocking rod is slidably arranged on the slide rail of the guide plate; the center line of the blocking rod is parallel to the length direction line of the square column; the blocking rod is located between the pressure block and the pressure plate.

[0014] The utility model verifies the punching position of the plate and whether there are too few holes through the cooperation of the hole position verification part and the fixing part, realizes one-time efficient verification and reduces the labor intensity of the staff; and verifies the redundant hole positions on the plate through the cooperation of the displacement part and the multi-hole verification part. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a partial enlarged structural schematic diagram of the utility model A;

[0017] Figure 3 It is a partial enlarged structural schematic diagram of the utility model B;

[0018] Figure 4It is a partial enlarged structural schematic diagram of C of the utility model;

[0019] Figure 5 It is a partial enlarged structural schematic diagram of the utility model D.

[0020] The list of numbers in the figure is: 1. Long rod, 2. Cylinder, 3. Hole inspection rod, 4. Side positioning plate, 5. Crossbeam, 6. Connecting rod, 7. Long base, 8. Driving motor, 9. Slide plate, 10. Rotating motor, 11. Vertical plate, 12. Horizontal plate, 13. Warning light, 14. Guide plate, 15. Screw, 16. Square column, 17. Vertical plate, 18. Pressure block, 19. Fixed plate, 20. Pressure plate, 21. Guardrail. DETAILED DESCRIPTION

[0021] See also Figure 1 , 2 , 3, 4 and Figure 5 The utility model comprises a fixed part, a displacement part, a hole position checking part and a multi-hole checking part; the hole position checking part is in plurality and arranged on the fixed part; the hole position checking part can check whether the punching position on the plate is correct; the displacement part is arranged on one side of the fixed part; the multi-hole checking part is arranged on the displacement part; the displacement part is used to drive the multi-hole checking part to move along the length direction of the plate, and check whether extra holes are processed on the plate during the displacement process;

[0022] The fixing part includes two long bars 1, both of which are set on the ground through brackets, and the two long bars 1 are set on the ground opposite to each other; strip grooves are set on the end surfaces of the long bars 1 close to each other along their length direction; strip holes are set on the top surfaces of the long bars 1 along their length direction, and the strip holes are connected to the strip grooves of the long bars 1; the long bars 1 can fix the hole position verification part.

[0023] The hole position verification part includes a cylinder 2, a hole inspection rod 3, a connecting plate, a side positioning plate 4, a crossbeam 5 and a connecting rod 6; a hole inspection rod 3 is arranged at the end of the piston rod of the cylinder 2; the cylinder 2 drives the hole inspection rod 3 upward and passes through the processed hole at the corresponding position. If a hole is successfully processed at the corresponding position, the hole inspection rod 3 passes through smoothly; if a hole is not successfully processed at the corresponding position, the hole inspection rod 3 will support the plate and drive the plate upward. Once the plate is lifted up, it means that there are few holes in the hole position of the plate; a connecting plate is arranged on the end surface of the cylinder 2 shell, and the piston rod of the cylinder 2 passes through the connecting plate; two crossbeams 5 are arranged opposite to each other at both ends of the connecting plate, a slide groove is arranged on the upper end surface of the connecting plate, and a slide rail is arranged on the lower end surface of the crossbeam, and the connecting plate is slidably arranged under the crossbeam; the combination of the cylinder 2 and the connecting plate can slide along the length direction of the crossbeam, thereby adjusting its Position; a connecting rod 6 is connected between the ends of the two cross beams 5, and a threaded hole is provided at the center of the top end surface of the connecting rod 6; the side positioning plate 4 is arranged on the side wall of the connecting plate, and a threaded hole is provided thereon, and the threaded hole of the bolt passing through the side positioning plate 4 touches the side wall of the cross beam 5; tightening the bolts on the side positioning plate 4 can fix the position between the cylinder 2 and the connecting plate assembly and the cross beam; the connecting rods 6 on both sides are respectively arranged in the strip grooves of the long bars 1 on both sides, and the bolts pass through the strip holes of the long bars 1 and are inserted into the threaded holes at the top ends of the connecting rods 6; tightening the bolts on the connecting rod 6 can fix the relative position between the cross beam and the long bars 1; by adjusting the position of the cross beam and the connecting plate, the position of each hole inspection rod 3 is adjusted, so that the relative position between each hole inspection rod 3 is adjustable, ensuring that the relative position relationship between each hole inspection rod 3 is consistent with the position relationship between the correct hole positions of the plate.

[0024] The displacement part includes a long base 7, a driving motor 8, a screw, a screw nut, a slide plate 9 and a rotating motor 10; the long base 7 is arranged on one side of the long bar 1, and the length direction line of the long base 7 is parallel to the length direction line of the long bar 1; the upper end surface of the long base 7 is provided with a strip groove along its length direction, one end of the strip groove at the top of the long base 7 is provided with a driving motor 8, and the other end is provided with a support plate, and one end of the screw is connected to the output shaft of the driving motor 8, and the other end of the screw is connected to the support plate axis; the driving motor 8 is used to drive the screw to rotate, and the rotating The lead screw drives the lead screw nut to move along the axial direction of the lead screw; the lead screw nut is arranged on the lead screw, and the lead screw nut is located in the strip groove of the long base 7; the slide plate 9 is slidably arranged on the top surface of the long base 7, and it is connected to the lead screw nut; the lead screw nut drives the slide plate 9 to slide synchronously, and then drives the porous calibration part on the slide plate 9 to move synchronously along the plate; the rotating motor 10 is arranged on the top surface of the slide plate 9; the rotating motor 10 is used to adjust the orientation of the porous calibration part, so that it can be rotated to the top of the plate to perform the porous calibration operation when needed.

[0025] The multi-hole verification part includes a vertical plate 11, a horizontal plate 12, a warning light 13, a lifting mechanism and a hole inspection mechanism; the vertical plate 11 is arranged on the output shaft of the rotating motor 10; the horizontal plate 12 is arranged at the top of the vertical plate 11; the warning light 13 and the lifting mechanism are both arranged on the horizontal plate 12; the warning light 13 is used to remind the staff whether there are multiple holes in the plate; the hole inspection mechanism is arranged on the lifting mechanism; the signal input end of the warning light 13 is connected to the signal output end of the CPU.

[0026] The lifting mechanism includes a guide plate 14, a screw rod 15 and a square column 16; a vertical guide hole is provided on the transverse plate 12, and the guide plate 14 passes through the guide hole on the transverse plate 12; the bottom end of the guide plate 14 is connected to the top end of the square column 16; the guide plate 14 provides a guide for the lifting and lowering of the square column 16 to avoid its lateral deviation; the length direction line of the square column 16 is parallel to the center line of the transverse plate 12; a threaded hole is provided on the upper end surface of the transverse plate 12, and the screw rod 15 passes through the threaded hole of the transverse plate 12 and is axially connected to the top end of the square column 16; the lifting and lowering of the square column 16 can be controlled by rotating the screw rod 15 forward and backward; the square column 16 is located directly below the transverse plate 12.

[0027] The hole inspection mechanism includes a hole inspection piece, a sensing piece and a blocking piece; a square groove is provided at the bottom end of the square column 16; there are multiple hole inspection pieces, and they are evenly arranged in the square groove at the bottom end of the square column 16 along the length direction of the square column 16; the hole inspection piece is used to check whether there are extra holes on the plate; the sensing piece and the blocking piece are both arranged on the side wall of the square column 16; the sensing piece cooperates with the hole inspection piece to determine whether there are corresponding holes; the blocking piece is used to adjust the number of hole inspection pieces put into use, so that the length of the hole inspection piece assembly matches the length of the plate, and the hole inspection pieces that exceed the width area of ​​the plate are blocked by the blocking piece and are not put into use.

[0028] The hole inspection member includes a spring, a vertical displacement plate 17 and a pressure block 18; the spring is arranged at the top of the inner wall of the square groove of the square column 16, and the bottom end of the spring is provided with a vertical displacement plate 17, and the vertical displacement plate 17 is arranged inside the square groove of the square column 16; the spring provides the vertical displacement plate 17 with a force to press on the plate; the bottom end of the vertical displacement plate 17 is conical, and the width of the vertical displacement plate 17 is smaller than the punching diameter of the plate, in order to ensure that the vertical displacement plate 17 can be smoothly inserted into the extra hole on the plate, and if there is no extra hole, the vertical displacement plate 17 will not fall down during the whole process of moving along the plate The vertical plate 17 moves downward, and will not move downward when passing through the correct hole due to the existence of the hole inspection rod 3. Only when there are redundant holes will the vertical plate 17 move downward; the side wall of the square column 16 is provided with strip holes, and the strip holes on the side wall of the square column 16 are connected to the square groove of the square column 16; the pressing block 18 is arranged at the top end of the side wall of the vertical plate 17, and the pressing block 18 extends from the strip holes on the side wall of the square column 16; when the vertical plate 17 is inserted into the redundant hole of the plate and then moves downward, the downward vertical plate 17 drives the pressing block 18 to move downward synchronously and touches the pressure plate 20 to trigger the signal of the pressure sensor.

[0029] The sensing component includes a fixed plate 19, a pressure sensor and a pressure plate 20; the fixed plate 19 is arranged on the side wall of the square column 16; the pressure sensor is arranged at the center of the upper end surface of the fixed plate 19; the pressure plate 20 is located directly above the fixed plate 19, and a spring is connected between the pressure plate 20 and the fixed plate 19; the pressure plate 20 is located directly below the pressure block 18; the signal output end of the pressure sensor is connected to the signal input end of the CPU; when the vertical displacement plate is inserted into the extra hole of the plate and moves downward, it drives the pressure block 18 to move downward and press on the pressure plate 18, and the pressure plate 18 overcomes the force of the spring below and presses on the pressure sensor.

[0030] There are two blocking members, which are arranged oppositely at the two ends of the square column 16 along the length direction of the square column 16; the blocking member includes a blocking rod 21 and a guide plate; the guide plate is arranged at one end of the square column 16, and a slide rail is arranged on the end surface of the square column 16; a slide groove is arranged on the blocking rod 21, and the blocking rod 21 is slidably arranged on the slide rail of the guide plate; the guide plate provides a lateral guiding function for the blocking rod 21; the center line of the blocking rod 21 is parallel to the length direction line of the square column 16; the blocking rod 21 is located between the pressing block 18 and the pressing plate 20 Since the width of different batches of plates is not fixed, the number of hole inspection pieces involved in the multi-hole verification is adjusted by the railing; the railing is moved horizontally to between the pressure block 18 and the pressure plate 20, and the pressure block 18 intercepted below by the railing cannot move downward under the action of the spring to press on the plate, and thus cannot participate in the verification of the multi-holes of the plate, let alone the signal of the pressure sensor; the railing can ensure that the hole inspection pieces involved in the verification are all located directly above the plate, and the distance between the hole inspection pieces at the two ends of the verification is equal to or less than the width of the plate.

[0031] The model of the CPU module in the utility model is 87C196KC.

[0032] Principle of use: according to the hole positions of the same batch of plates to be inspected, the number and quantity of each hole inspection rod 3 are adjusted. The hole position inspection part is installed on the long bar 1 according to the number of hole positions of the plate. According to the sliding of the connecting plate and the sliding of the connecting rod 6, the position of the hole inspection rod 3 is adjusted until the relative position between each hole inspection rod 3 is consistent with the relative position between the correct hole positions of the plate; then tighten the corresponding bolts to fix the position of the hole inspection rod; in the initial state, the horizontal plate 12 is not above the long bar 1;

[0033] When starting the hole inspection, place the plate to be inspected on the crossbeam 5, and make the first hole on the plate correspond to the position of the first hole inspection rod 3, and the last hole on the plate correspond to the position of the last hole inspection rod 3, then start all the cylinders 2, and extend each hole inspection rod 3 from its corresponding plate hole position. If there are holes at the correct hole positions on the plate, all the hole inspection rods 3 will be smoothly extended. Once there is a misplaced hole or a hole is not punched enough, the hole inspection rod 3 corresponding to this position will lift the plate. Once the plate is lifted up, it means that there is a problem with the punching position, which is a problem piece, and the subsequent multi-hole inspection will not be carried out.

[0034] If all the hole-checking rods 3 are extended smoothly and the plate is not lifted, it means that the plate has no possibility of misaligned holes and insufficient holes; the cylinder 2 is controlled to move so that the hole-checking rods 3 move downward until the top end surface of the hole-checking rods 3 is flush with the upper end surface of the plate; then the rotating motor 10 is started to drive the square column 16 to move to the top of the plate to check for excess holes;

[0035] The positions of the guardrails 21 on both sides are adjusted so that only the vertical shifting plates 17 within the width range of the plate are involved in the verification, and the vertical shifting plates 17 that have passed the plate are blocked by the guardrails and cannot move downward to touch the pressure plate; then the screw 15 is rotated to make the square column 16 move downward until the vertical shifting plates 17 touch the plate, ensuring that the springs above the vertical shifting plates 17 are compressed for a certain distance; then the drive motor 8 is started to drive each vertical shifting plate 17 forward. In the process of moving forward, if it encounters the hole inspection rod on the plate plane or the normal hole position, the vertical shifting plates 17 will not move downward. Only when there are excess hole positions, the vertical shifting plates 17 corresponding to the excess hole positions move downward and are inserted into the excess holes. When this vertical shifting plate 17 moves downward, it drives the pressure block 18 to move downward to touch the pressure plate 20. The downward movement of the pressure plate 20 triggers the signal of the pressure sensor. After the pressure sensor receives the touch pressure signal, the prompt light is on, indicating that there are excess hole positions and this plate is a problem plate;

[0036] Then, the square column 16 moves from one end of the plate to the other end without triggering the warning light signal, indicating that there are no redundant holes in the plate. At this point, the misaligned holes, few holes, and many holes in the plate have all been verified.

Claims

1. A hole inspection device suitable for plates, characterized in that: The invention comprises a fixed part, a displacement part, a hole position checking part and a multi-hole checking part; the hole position checking parts are in plurality and arranged on the fixed part; the displacement part is arranged on one side of the fixed part; the multi-hole checking part is arranged on the displacement part; the fixed part comprises two long bars (1), the two long bars (1) are arranged on the ground through a bracket, and the two long bars (1) are arranged on the ground opposite to each other; the end surfaces of the long bars (1) close to each other are provided with strip grooves along their length direction; the top end surface of the long bars (1) is provided with strip holes along its length direction, and the strip holes are connected to the strip grooves of the long bars (1).

2. The hole inspection device for plates according to claim 1, characterized in that: The hole position checking part comprises a cylinder (2), a hole checking rod (3), a connecting plate, a side positioning plate (4), a cross beam (5) and a connecting rod (6); a connecting plate is arranged on the end surface of the cylinder (2) shell, and the piston rod of the cylinder (2) passes through the connecting plate; two cross beams (5) are arranged opposite to each other at both ends of the connecting plate, a sliding groove is arranged on the upper end surface of the connecting plate, and a sliding rail is arranged on the lower end surface of the cross beam, and the connecting plate is slidably arranged below the cross beam; a connecting rod (6) is connected between the ends of the two cross beams (5). 6), a threaded hole is provided at the center of the top end surface of the connecting rod (6); a hole inspection rod (3) is provided at the end of the piston rod of the cylinder (2); the side positioning plate (4) is provided on the side wall of the connecting plate and has a threaded hole, and the bolts are passed through the threaded holes of the side positioning plate (4) and pressed against the side wall of the crossbeam (5); the connecting rods (6) on both sides are respectively provided in the strip grooves of the long bars (1) on both sides, and the bolts are inserted into the threaded holes at the top ends of the connecting rods (6) after passing through the strip holes of the long bars (1).

3. The hole inspection device for plates according to claim 2, characterized in that: The displacement part comprises a long base (7), a drive motor (8), a lead screw, a lead screw nut, a slide plate (9) and a rotating motor (10); the long base (7) is arranged on one side of the long bar (1), and the length direction line of the long base (7) is parallel to the length direction line of the long bar (1); the upper end surface of the long base (7) is provided with a strip groove along its length direction, one end of the strip groove at the top end of the long base (7) is provided with a drive motor (8), and the other end is provided with a support plate, one end of the lead screw is connected to the output shaft of the drive motor (8), and the other end of the lead screw is axially connected to the support plate; the lead screw nut is arranged on the lead screw, and the lead screw nut is located in the strip groove of the long base (7); the slide plate (9) is slidably arranged on the top end surface of the long base (7), and is connected to the lead screw nut; the rotating motor (10) is arranged on the top end surface of the slide plate (9).

4. The hole inspection device for plates according to claim 3, characterized in that: The multi-hole inspection part comprises a vertical plate (11), a horizontal plate (12), a warning light (13), a lifting mechanism and a hole inspection mechanism; the vertical plate (11) is arranged on an output shaft of a rotating motor (10); the horizontal plate (12) is arranged at the top of the vertical plate (11); the warning light (13) and the lifting mechanism are both arranged on the horizontal plate (12); the hole inspection mechanism is arranged on the lifting mechanism; and a signal input end of the warning light (13) is connected to a signal output end of a CPU.

5. The hole inspection device for plates according to claim 4, characterized in that: The lifting mechanism comprises a guide plate (14), a screw rod (15) and a square column (16); a vertical guide hole is provided on the horizontal plate (12), and the guide plate (14) penetrates the guide hole on the horizontal plate (12); the bottom end of the guide plate (14) is connected to the top end of the square column (16); the length direction line of the square column (16) is parallel to the center line of the horizontal plate (12); a threaded hole is provided on the upper end surface of the horizontal plate (12), and the screw rod (15) penetrates the threaded hole of the horizontal plate (12) and is axially connected to the top end of the square column (16); the square column (16) is located directly below the horizontal plate (12).

6. The hole inspection device for plates according to claim 5, characterized in that: The hole inspection mechanism comprises a hole inspection member, a sensing member and a blocking member; a square groove is provided at the bottom end of the square column (16); the hole inspection members are multiple in number and are evenly arranged in the square groove at the bottom end of the square column (16) along the length direction of the square column (16); the sensing member and the blocking member are both arranged on the side wall of the square column (16).

7. The hole inspection device for plates according to claim 6, characterized in that: The hole inspection component comprises a spring, a vertical displacement plate (17) and a pressure block (18); the spring is arranged at the top of the inner wall of the square groove of the square column (16), and the bottom end of the spring is provided with the vertical displacement plate (17), and the vertical displacement plate (17) is arranged inside the square groove of the square column (16); the bottom end of the vertical displacement plate (17) is conical, and the width of the vertical displacement plate (17) is smaller than the punching diameter of the plate; the side wall of the square column (16) is provided with a strip hole, and the strip hole on the side wall of the square column (16) is connected to the square groove of the square column (16); the pressure block (18) is arranged at the top of the side wall of the vertical displacement plate (17), and the pressure block (18) protrudes from the strip hole on the side wall of the square column (16).

8. The hole inspection device for plates according to claim 7, characterized in that: The sensing component comprises a fixed plate (19), a pressure sensor and a pressure plate (20); the fixed plate (19) is arranged on the side wall of the square column (16); the pressure sensor is arranged at the center of the upper end surface of the fixed plate (19); the pressure plate (20) is located directly above the fixed plate (19), and a spring is connected between the pressure plate (20) and the fixed plate (19); the pressure plate (20) is located directly below the pressure block (18); and the signal output end of the pressure sensor is connected to the signal input end of the CPU.

9. The hole inspection device for plates according to claim 8, characterized in that: The blocking members are two in number and are arranged opposite to each other at two ends of the square column (16) along the length direction of the square column (16); the blocking members include a blocking rod (21) and a guide plate; the guide plate is arranged at one end of the square column (16) and a slide rail is arranged on the end surface of the guide plate; a slide groove is arranged on the blocking rod (21), and the blocking rod (21) is slidably arranged on the slide rail of the guide plate; the center line of the blocking rod (21) is parallel to the length direction line of the square column (16); the blocking rod (21) is located between the pressure block (18) and the pressure plate (20).

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