A lock thickness detection device

Abstract

This utility model proposes a lock thickness detection device, including a divider turntable, a detection frame, a detection table, and a detection component. The detection component includes a lifting part and a pressing part aligned with each other. The lifting part is installed on the detection frame, and the pressing part is installed on the detection table (3). The divider turntable includes a fixed inner plate and a movable outer plate. A detection station is provided on the movable outer plate. A through groove is provided at the detection station. A positioning fixture is provided on the through groove. The bottom of the positioning fixture is provided with a spaced top groove. A sensor guide hole is provided next to the detection station in the through groove. During the detection, the extrusion pressure does not act on the turntable, avoiding equipment damage and ensuring the consistency of the lock detection environment. At the same time, the setting of multiple detection stations greatly improves the detection efficiency and can meet the needs of large-scale detection.

Description

Technical Field

[0001] This utility model proposes a lock thickness detection device, which belongs to the field of precision lock testing. Background Technology

[0002] In the lock manufacturing industry, lock thickness is one of the key parameters affecting product quality and performance. Traditional lock thickness testing methods mostly rely on manual measurement, which is not only inefficient and difficult to meet the needs of large-scale production, but also prone to significant measurement errors due to human factors, making it impossible to guarantee the accuracy and consistency of the test results. While existing automated testing is faster than manual testing, it does not meet the requirements for high-precision testing. Therefore, there is a need for a lock thickness testing device that can achieve efficient and accurate testing. Utility Model Content

[0003] To address the technical problems existing in the prior art, this utility model proposes a lock thickness detection device to improve the efficiency and accuracy of precision lock thickness detection. The technical features adopted are as follows:

[0004] The lock thickness detection device includes a divider turntable, a detection frame, a detection table, and a detection component. The detection component comprises a lifting part and a pressing part aligned with each other. The lifting part is mounted on the detection frame, and the pressing part is mounted on the detection table. The divider turntable includes a fixed inner plate and a movable outer plate. The movable outer plate has at least six detection stations. Each detection station has a through groove, and a positioning fixture is provided on the through groove. The bottom of the positioning fixture has spaced top grooves, and sensor guide holes are provided next to each detection station in the through groove.

[0005] Preferably, the divider turntable, the testing frame, and the testing platform are provided with mounting holes, and the testing component is provided with connection holes for fixing.

[0006] Preferably, the lifting part comprises a base fixed to the testing platform and a fixing plate with a connection hole connected by a right-angle connector. A lifting cylinder is fixed on one side of the fixing plate, and a set of sliding grooves is provided on the other side to be movably connected to a sliding plate with a sliding rail. A top block is fixed on the top of the sliding plate, and the testing platform has a movable groove at the corresponding position at the bottom of the sliding plate for the sliding plate to pass through.

[0007] Preferably, the sliding groove of the lifting part is provided with a limiter, the sliding plate is provided with a limit groove that matches the limiter, the upper part of the sliding plate is provided with an end clip that matches the head end of the lifting cylinder, the lower part of the top block is connected with a T-shaped fixing block, the head end of the T-shaped fixing block is provided with a through hole, and a sensor bumper is fixed in the through hole.

[0008] Preferably, the pressing part comprises a pressing cylinder fixed on the testing frame by a perforated plate, and the bottom of the pressing cylinder is connected to the positioning reference plate by bolts and a connecting plate.

[0009] Preferably, a sensor fixing block is provided on the other side of the positioning reference plate of the pressing part, and a displacement sensor aligned with the sensor head is provided on the sensor fixing block.

[0010] Preferably, the top block has a protrusion that can pass through the through groove and the top groove.

[0011] Preferably, the connection between the testing frame and the fixed inner plate and the testing table is provided with a fixing adjustment device 2 that matches the mounting hole, and the fixing adjustment device is provided with a horizontal adjustment shaft.

[0012] The beneficial effects of this utility model are as follows:

[0013] The lifting and pressing parts of the detection component cooperate with the through groove of the movable outer plate. The top block and the positioning reference plate work together to accurately position the lock. At the same time, the displacement sensor and the sensor head work together to measure the displacement difference as the judgment standard for passing the test. This avoids the cumbersome operation caused by the original lock thickness and effectively reduces the detection error. The cooperation between the turntable and the component under test ensures that the cylinder extrusion does not act on the turntable during the test, avoiding equipment damage and ensuring the consistency of the lock testing environment. At the same time, the setting of multiple testing stations greatly improves the testing efficiency and can meet the needs of large-scale testing.

[0014] The fixing and adjustment device between the testing frame, the fixed inner plate, and the testing table allows the position of the testing components to be flexibly adjusted according to actual needs. In addition, the design of the mounting holes and connection holes enables the testing device to be installed and used in a modular manner, which improves the applicability and versatility of the device. Driven by cylinders and controlled by sensors, no manual intervention is required, which reduces labor intensity, reduces the impact of human factors on the testing results, and improves the level of automation in production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 2 .

[0019] Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 3 .

[0020] Figure 6This is a schematic diagram of the structure of the present utility model. Figure 4 .

[0021] Among them, 1 is the divider turntable; 2 is the inspection frame; 3 is the inspection table; 4 is the inspection assembly; 5 is the lifting part; and 6 is the pressing part.

[0022] 11. Fixed inner plate; 12. Movable outer plate; 13. Inspection station; 14. Positioning fixture; 15. Through groove; 16. Top groove;

[0023] 17. Sensor guide hole; 18. Protrusion; 19. Movable groove; 21. Fixed adjustment device; 22. Adjustment shaft;

[0024] 501, base; 502, right-angle connector; 503, fixing plate; 504, lifting cylinder; 505, slide rail; 506, sliding plate;

[0025] 507, slide rail; 508, end clip; 509, top block; 510, T-shaped fixing block; 511, sensor contact head;

[0026] 512, limit switch; 513, limit groove; 601, clamping cylinder; 602, connecting plate;

[0027] 603, Positioning reference plate; 604, Sensor fixing block; 605, Displacement sensor. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the embodiments.

[0029] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and "vertical" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, in the description of this utility model, unless otherwise stated, "multiple", "multiple groups", and "multiple roots" mean two or more.

[0032] Unless otherwise specified, the materials, instruments and methods used in the following embodiments are all conventional materials, instruments and methods in the art and can be obtained through commercial channels.

[0033] Example 1

[0034] like Figure 1 , Figure 2 The lock thickness detection device in this embodiment consists of a divider turntable 1, a detection frame 2, a detection platform 3, and a detection assembly 4. The detection assembly 4 includes a lifting part 5 and a pressing part 6 aligned with each other. The divider turntable adopts a double-layer nested design, including a fixed inner plate 11 and a movable outer plate 12. The fixed inner plate 11 is rigidly connected to the turntable base by high-strength bolts, providing a stable support structure; the movable outer plate is connected to the fixed inner plate by high-precision bearings, enabling high-precision intermittent rotation. At least 6 detection stations 13 are evenly distributed in the circumferential direction of the movable outer plate 12. This embodiment has 8 detection stations, each station adopts an equally spaced indexing design, and each electrical component of the detection assembly is connected to a Siemens PLC control device.

[0035] Each testing station 13 is equipped with a through-slot 15 that penetrates the movable outer plate. A positioning fixture 14 with a lock is installed on the through-slot 15. The bottom of the positioning fixture has spaced slots 16. A sensor guide hole 17 is also provided next to the testing station 13 in the through-slot 15. The inner wall of the guide hole is polished and covered with shielding tape, providing a low-interference channel for subsequent sensor installation and signal transmission. The testing frame 2 and testing table 3 serve as the mounting carriers for the testing components 4. Their main structures are made of high-strength aluminum alloy, CNC machined, and hard anodized, ensuring lightweight construction while maintaining good resistance to deformation.

[0036] Example 2

[0037] like Figure 3 , Figure 4As shown, the lifting part 5 of this utility model is installed on the testing platform 3. The base 501, which is fixed on the testing platform 3, is fixedly connected to the testing platform 3 by high-strength bolts. The base 501 is securely connected to the fixing plate 503 with connecting holes by bolt fastening through the right-angle connector 502. The fixing plate provides reliable support for other components. A lifting cylinder 504 is installed on one side of the fixing plate 503. The cylinder adopts a built-in magnetic induction switch, which can provide real-time feedback on the piston position. On the other side of the fixing plate 503, there is a set of parallel sliding grooves 505. The sliding grooves 505 adopt an integrated linear guide rail slider design and form a movable connection with the sliding plate 506 with a high-precision sliding rail 507. The straightness error of the sliding plate 506 when sliding in the sliding groove 505 is less than 0.02mm. A top block 509 is fixed to the top of the slide plate 506. The top block 509 is hardened to a hardness of HRC55. The top block 509 has a protrusion 18 that can pass through the through groove 15 and the top groove 16. The protrusion 18 is designed as a horizontal plane to support the lock to be tested. The testing table 3 has an movable groove 19 at the bottom of the slide plate 506 that the slide plate 506 can pass through. The space utilization rate is improved through the three-dimensional spatial design.

[0038] To control the lifting stroke of the slide plate 506, a limiter 512 is provided in the slide groove 505 of the lifting part 5. The limiter 512 uses a hydraulic damper for mechanical limiting. The slide plate 506 is provided with a limiting groove 513 that matches the limiter 512, which is used to adjust the stroke of the limiter. At the same time, the upper part of the slide plate 506 is provided with an end clamp 508 that matches the head end of the lifting cylinder 504. The end clamp 508 adopts a semi-clamp-type locking structure and is connected by bolts to achieve quick assembly and disassembly. A T-shaped fixing block 510 is connected to the lower part 509 of the top block. The head end of the T-shaped fixing block 510 is provided with a through hole. The sensor contact head 511 is fixed in the through hole by an interference fit. The surface of the sensor contact head 511 is plated with a wear-resistant chromium layer to ensure long-term stability and is used to trigger the displacement sensor for thickness detection.

[0039] Example 3

[0040] like Figure 5 , Figure 6As shown, the pressing part 6 of this utility model is installed on the testing frame. A pressing cylinder 601 is fixed on the testing frame via a perforated plate. This cylinder adopts a guide rod design and has a built-in magnetic induction switch, which can effectively prevent the piston rod from rotating. The maximum pressing stroke is 50mm, and the pressure is adjustable from 0.1 to 0.7MPa. The bottom of the pressing cylinder 601 is connected to the positioning reference plate 603 via bolts and a connecting plate 602. The surface of the positioning reference plate 603 is ground, and the flatness error is less than 0.01mm, which can stably press down. The pressing stops after the cylinder lock contacts the highest point. On the other side of the positioning reference plate 603, a sensor fixing block 604 is fixed with bolts. A displacement sensor 605 is installed on the sensor fixing block 604 and aligned with the sensor contact head 511. The distance the positioning reference plate presses down after contacting the contact head is recorded. During the entire thickness measurement process, only the pressing distance and the thickness of the lock to be tested change. The thickness can be expressed by the pressing distance. That is, as long as the pressing distance is within a reasonable range, it can be considered that the thickness of the lock is qualified, without the need to actually complete the thickness measurement of a single lock.

[0041] Example 4

[0042] This embodiment differs from the previous embodiments in that standard mounting holes are pre-drilled on the divider turntable, the testing frame, and the testing platform. The testing component 4 has connection holes for fixing. All components are assembled using high-strength internal hex bolts, and thread-locking agent is applied to key connections to prevent loosening. A fixing adjustment device 21 matching the mounting holes is provided at the connection between the testing frame and the fixed inner plate and the testing platform. The fixing adjustment device 21 has a horizontal adjusting shaft 22 with 0.01mm precision markings. By rotating the adjusting shaft 22, the position of the testing frame can be finely adjusted within ±5mm to ensure accurate alignment of the lifting part 5 and the pressing part 6 of the testing component 4. After fine-tuning, the fixing adjustment device 21 is fixedly connected through the mounting holes to ensure the accuracy of the testing.

[0043] The detection process of this utility model is as follows: After the lock is placed on the positioning fixture 14, the movable outer disk of the divider turntable rotates intermittently under the drive of the servo motor, transporting the lock to the detection station 13. At this time, the lifting cylinder 504 of the lifting part 5 starts after receiving the PLC control signal. After the end clamp 508 drives the slide plate 506 to rise, the protrusion 18 of the top block 509 passes through the through groove 15 and the top groove 16 to lift the lock, so that the lock is separated from the support surface of the positioning fixture 14. The pressing cylinder 601 of the pressing part 6 drives the positioning reference plate 603 to move towards the lock. After the displacement sensor 605 contacts the sensor head 511, it records the distance of displacement of the positioning reference plate. When the positioning reference plate contacts the highest point of the lock to be tested, the pressing cylinder stops and records the displacement distance at this time. The data is processed by the PLC controller, and the displacement distance is compared with the displacement distance under the thickness of qualified products to quickly complete the thickness detection comparison. After the test is completed, the lifting cylinder 504 of the lifting part 5 and the pressing cylinder 601 of the pressing part 6 are synchronously reset under the control of PLC. The divider turntable continues to rotate, transporting the tested lock out of the test station and simultaneously transporting the next lock to be tested to the test station, realizing continuous automated testing of lock thickness. The testing cycle can reach less than 23 seconds per station.

[0044] This invention does not improve any software programs or methods. This invention only designs the structure of the detection device. The methods or software programs involved in the debugging and control of the PLC control device and sensors are all based on existing methods or software program design books, manuals or product manuals by those skilled in the art, combined with the functions involved in the principles and effects of this invention, and can be implemented by writing their own programs.

[0045] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A lock thickness detection device, comprising a divider turntable (1), a detection frame (2), a detection table (3), and a detection assembly (4), characterized in that, The detection component (4) includes a lifting part (5) and a pressing part (6) aligned with each other. The lifting part (5) is installed on the detection frame (2), and the pressing part (6) is installed on the detection table (3). The divider turntable (1) includes a fixed inner plate (11) and a movable outer plate (12). The movable outer plate (12) has at least 6 detection stations (13). The detection station (13) is provided with a through groove (15). The through groove is provided with a positioning fixture (14). The bottom of the positioning fixture is provided with a spaced top groove (16). The through groove (15) is provided with a sensor guide hole (17) next to the detection station (13).

2. The lock thickness detection device according to claim 1, characterized in that, The divider turntable (1), the testing frame (2), and the testing platform (3) are provided with mounting holes, and the testing component (4) is provided with connection holes for fixing.

3. The lock thickness detection device according to claim 2, characterized in that, The lifting part (5) consists of a base (501) fixed on the testing platform (3) and a fixing plate (503) with a connection hole connected by a right-angle connector (502). A lifting cylinder (504) is fixed on one side of the fixing plate (503), and a set of slide grooves (505) is provided on the other side to be movably connected to a slide plate (506) with a slide rail (507). A top block (509) is fixed on the top of the slide plate (506). The testing platform (3) has a movable groove (19) at the corresponding position at the bottom of the slide plate (506) for the slide plate (506) to pass through.

4. The lock thickness detection device according to claim 3, characterized in that, The lifting part (5) has a limiter (512) in the slide groove (505), and a limit groove (513) matching the limiter (512) is provided on the slide plate (506). The upper part of the slide plate (506) is provided with an end clip (508) matching the head end of the lifting cylinder (504). The lower part of the top block is connected to a T-shaped fixing block (510). The head end of the T-shaped fixing block (510) is provided with a through hole, and a sensor bumper (511) is fixed in the through hole.

5. The lock thickness detection device according to claim 4, characterized in that, The pressing part (6) consists of a pressing cylinder (601) fixed on the testing frame (2) by a perforated plate, and the bottom of the pressing cylinder (601) is connected to the positioning reference plate (603) by bolts and a connecting plate (602).

6. The lock thickness detection device according to claim 5, characterized in that, On the other side of the positioning reference plate (603) of the pressing part (6), there is a sensor fixing block (604), and a displacement sensor (605) aligned with the sensor head (511) is provided on the sensor fixing block (604).

7. The lock thickness detection device according to claim 3, characterized in that, The top block (509) is provided with a protrusion (18) that can pass through the through groove (15) and the top groove (16).

8. The lock thickness detection device according to claim 1, characterized in that, The testing frame (2) is provided with a fixing adjustment device (21) that matches the mounting hole at the connection between the fixed inner plate (11) and the testing table (3). The fixing adjustment device (21) is provided with a horizontal adjustment shaft (22).

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