A screw rod gauge detection device

Abstract

This utility model relates to the field of testing technology and discloses a screw gauge testing device, including a frame on which are mounted: a vibratory feeder for providing screw components; a linear feeder for conveying the screw components; a testing table for placing and fixing the screw for testing; a material handling mechanism for transporting the screw to the testing table for testing; an upper thread testing mechanism for testing the upper thread of the screw; and a lower thread testing mechanism for testing the lower thread of the screw. Through structured division of labor, the device achieves automated testing of the upper and lower threads of the screw, possessing strong functional integration and automation features. It reduces labor costs, improves testing efficiency, reduces human error, and increases production capacity.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and specifically to a screw gauge testing device. Background Technology

[0002] "Screw go gauge inspection" refers to an inspection method for judging the conformity of the geometric dimensions of a screw. It mainly involves using go and no-go gauges to quickly check the compliance of key parameters such as the diameter, pitch, and tooth profile of the thread to determine whether the screw meets the processing or assembly requirements. The following problems exist in the current market: the current screw inspection mainly relies on manual hand-held thread ring gauge inspection, which is slow and prone to errors; The technical problem to be solved by this utility model is to provide an automated screw gauge testing device. Utility Model Content

[0003] The technical problem this invention addresses is to provide an automated screw gauge testing device. Through structured division of labor, it achieves automated testing of the upper and lower threads of screws, possessing strong functional integration and automation features. The device uses a frame as the overall support platform, with vibratory feeders arranged sequentially for orderly feeding and linear feeders for directional conveying of the screw parts, ensuring subsequent positioning accuracy. A material handling mechanism serves as a transfer link, accurately placing the fed screws onto the testing table for easy fixation and stable testing operations. The testing section employs a divided thread testing mechanism, independently testing the upper and lower threads of the screw, improving the comprehensiveness and accuracy of testing, and contributing to improved quality control efficiency for screw products. The overall equipment layout is reasonable and logically clear, suitable for automated screening and quality control processes of batch threaded parts.

[0004] A screw go-go gauge testing device includes a frame, on which are mounted: a vibratory feeder for providing screw components; a linear feeder for conveying the screw components; a testing table for placing and fixing the screw for testing; a material handling mechanism for transporting the screw to the testing table for testing; an upper thread testing mechanism for testing the upper thread of the screw; and a lower thread testing mechanism for testing the lower thread of the screw.

[0005] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model screw go-gauge testing equipment achieves automated testing of the upper and lower threads of screws through structured division of labor, possessing strong functional integration and automation features. The equipment uses a frame as the overall support platform, with vibratory feeders arranged sequentially for orderly feeding and linear feeders for directional conveying of the screw parts, ensuring subsequent positioning accuracy. The material handling mechanism serves as a transfer link, accurately placing the fed screws onto the testing table, facilitating fixation and stable testing operations. The testing section employs an upper and lower partitioned thread testing mechanism, independently testing the upper and lower threads of the screw, improving the comprehensiveness and accuracy of testing, and contributing to improved quality control efficiency for screw products. The overall equipment layout is reasonable and logically clear, suitable for automatic screening and quality control processes of batch threaded parts; it reduces labor costs, improves testing efficiency, reduces human error, and increases production capacity.

[0006] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0009] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0010] Figure 3 This is a utility model Figure 2 Another structural diagram from another angle.

[0011] Figure 4 This is a schematic diagram of the testing platform structure of this utility model.

[0012] Figure 5 This is a schematic diagram of the screw thread detection mechanism of this utility model.

[0013] Figure 6 This is a utility model Figure 5 Another structural diagram from another angle.

[0014] Figure 7 This is a schematic diagram of the screw thread detection mechanism of this utility model.

[0015] Figure 8 This is a utility model Figure 7 Another structural diagram from another angle.

[0016] Figure 9 This is a schematic diagram of the material handling mechanism of this utility model.

[0017] Figure 10 This is a schematic diagram of the linear feeder structure of this utility model.

[0018] Figure 11 This is a schematic diagram of the misaligned block structure of this utility model.

[0019] In the diagram: 1. Frame; 2. Vibratory feeder; 3. Linear feeder; 4. Inspection table; 5. Material handling mechanism; 6. Screw upper thread inspection mechanism; 7. Screw lower thread inspection mechanism; 8. Slider seat; 9. Second cylinder; 10. Push rod; 11. First wedge seat; 12. Second wedge seat; 13. Return spring; 14. Clamping plate; 15. First upright; 16. First cylinder; 17. First slide rail; 18. First mounting block; 19. First servo motor; 20. First go gauge fixing block 21. First ring gauge; 22. Second upright; 23. Third cylinder; 24. Second slide rail; 25. Second mounting block; 26. Second servo motor; 27. Second go gauge fixing block; 28. Second ring gauge; 29. ​​Linear module; 30. Mounting slider; 31. Third slide rail; 32. Gripper fixing plate; 33. Fourth cylinder; 34. Gripper cylinder; 35. Product feeding misalignment mechanism; 36. Slide table cylinder; 37. Misalignment block; 38. Placement slot; 39. Qualified product storage box. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.

[0022] Please see Figures 1-11In this embodiment of the present invention, a screw gauge testing device includes a frame 1; and the frame 1 is provided with: a vibratory feeder 2 for providing a screw component; a linear feeder 3 for conveying the screw component; a testing platform 4 for placing and fixing the screw for testing; a material handling mechanism 5 for transporting the screw to the testing platform 4 for testing; a screw upper thread testing mechanism 6 for testing the upper thread of the screw; and a screw lower thread testing mechanism 7 for testing the lower thread of the screw.

[0023] Specifically, this screw go-go gauge testing equipment achieves automated testing of the upper and lower threads of screws through structured division of labor, possessing strong functional integration and automation features. The equipment consists of a frame 1 as the overall support platform, with vibratory feeders 2 arranged sequentially for orderly feeding and linear feeders 3 for directional conveying of the screw parts, ensuring subsequent positioning accuracy. The material handling mechanism 5 serves as a transfer link, precisely placing the fed screws onto the testing table 4 for easy fixation and stable testing operations. The testing section employs a dual-section thread testing mechanism, independently testing the upper and lower threads of the screw, improving the comprehensiveness and accuracy of the testing, and contributing to improved quality control efficiency for screw products. The overall equipment layout is reasonable and logically clear, suitable for automated screening and quality control processes of batch threaded parts.

[0024] Furthermore, the testing platform 4 is provided with several slider seats 8 at intervals; and several second cylinders 9 are horizontally provided on the testing platform 4; and the piston rods of the second cylinders 9 are all connected to U-shaped push rods 10; and the second cylinders 9 drive the push rods 10 to slide and engage with the slider seats 8; and the slider seats 8 are provided with first wedge seats 11 and second wedge seats 12 at intervals inside; and when the push rods 10 move into the slider seats 8, the first wedge seats 11 and second wedge seats 12 move closer together; and a return spring 13 is provided between the first wedge seats 11 and second wedge seats 12; when the push rods 10 move away from the inside of the slider seats 8, the return spring 13 moves the first wedge seats 11 and second wedge seats 12 away from each other and thus resets them; the tops of the first wedge seats 11 and second wedge seats 12 are provided with clamping pieces 14, so that when the first wedge seats 11 and second wedge seats 12 move closer together, the two clamping pieces 14 can clamp the screw.

[0025] Specifically, this structure, through a cleverly designed slider seat 8 and wedge clamping mechanism, achieves automatic clamping and release of the screw, exhibiting high mechanical linkage efficiency and positioning stability. The slider seats 8, spaced apart on the inspection table 4, provide multi-station support. Combined with multiple second cylinders 9 and their driven U-shaped push rods 10, simultaneous or step-by-step inspection of multiple screws can be achieved. When the push rod 10 is pushed, the sliding engagement causes the first and second wedge seats 12 to move towards each other, causing the top clamping plate 14 to clamp the screw, achieving stable positioning and facilitating precision control in subsequent thread inspection. When the push rod 10 retracts, the wedge seats automatically separate under the action of the return spring 13, resetting the clamping mechanism and providing conditions for the entry of the next workpiece. The entire mechanism is compact, reliable in operation, and suitable for high-frequency, high-precision automated thread inspection systems, significantly improving inspection efficiency and consistency.

[0026] Furthermore, the screw thread detection mechanism 6 includes a vertically arranged first stand 15; a first cylinder 16 with its piston rod facing downward is provided on one side of the first stand 15; a first slide rail 17 is provided on the other side of the first stand 15; and a first mounting block 18 is provided that slides vertically with the first slide rail 17; the first cylinder 16 drives the first mounting block 18 to reciprocate up and down along the first slide rail 17; a first servo motor 19 is provided on the first mounting block 18; and the shaft of the first servo motor 19 is connected to a first go gauge fixing block 20; and a first ring gauge 21 is provided inside the first go gauge fixing block 20; the first servo motor 19 drives the first ring gauge 21 to rotate the screw, and the screw is judged to be qualified by detecting the torque between the motor shaft and the screw.

[0027] Specifically, the thread inspection mechanism 6 on the screw combines pneumatic and servo control to achieve precise GO gauge inspection of the upper thread of the screw, exhibiting high intelligence and judgment accuracy. Structurally, the first support frame 15 serves as the main support component, with a first cylinder 16 on one side to drive the first mounting block 18 to move up and down along the first slide rail 17, allowing the GO gauge device to be aligned with the screw at different positions. The first mounting block 18 is equipped with a first servo motor 19, whose shaft drives the first ring gauge 21 inside the GO gauge fixing block to rotate, simulating the actual use process of screwing in. The key is that the servo motor monitors torque changes in real time during the screwing process; if the thread is too tight or too loose, torque feedback can be used to determine whether it meets the qualification standard. This design not only ensures the consistency and objectivity of the inspection but also efficiently screens out unqualified products, making it suitable for automated, batch thread inspection scenarios.

[0028] Furthermore, the screw thread detection mechanism 7 includes a vertically arranged second stand 22; a third cylinder 23 with its piston rod facing upward is provided on one side of the second stand 22; a second slide rail 24 is provided on the other side of the second stand 22; and a second mounting block 25 is provided that slides vertically and vertically with the second slide rail 24; the third cylinder drives the second mounting block 25 to reciprocate up and down along the second slide rail 24; a second servo motor 26 is provided on the second mounting block 25; and a second go gauge fixing block 27 is connected to the shaft of the second servo motor 26; and a second ring gauge 28 is provided inside the second go gauge fixing block 27; the second servo motor 26 drives the second ring gauge 28 to rotate the screw, and the screw is judged to be qualified by detecting the torque between the motor shaft and the screw.

[0029] Specifically, the screw thread inspection mechanism 7 achieves precise gauge inspection of the screw thread through pneumatic and servo coordinated control, possessing excellent automation and judgment reliability. In its structure, the second support frame 22 serves as the overall support base, with a third cylinder 23 on one side, its piston rod pointing upwards, driving the second mounting block 25 to reciprocate up and down along the second slide rail 24, ensuring accurate alignment of the inspection position with the screw thread. A second servo motor 26 is mounted on the second mounting block 25, driving the rotating shaft to rotate and screw the second ring gauge 28 within the gauge fixing block into the screw thread. During the screwing process, the system monitors the torque change between the servo motor shaft and the screw in real time, determining whether the thread is smooth, whether there are deviations or machining defects, thereby assessing the screw's qualification. This structure offers stable operation and high inspection accuracy, effectively improving the efficiency and consistency of screw thread inspection, and is suitable for automated inspection scenarios with high screw product quality requirements. Finally, qualified screws flow into the qualified product storage box 39 via a track.

[0030] Furthermore, the material handling mechanism 5 includes a horizontally arranged linear module 29; and a mounting slider 30 that moves synchronously left and right on the linear module 29; and a plurality of third slide rails 31 spaced apart on the mounting slider 30; and a gripper fixing plate 32 that slides up and down with the third slide rails 31; and a fourth cylinder 33 on the mounting slider 30 that drives the gripper fixing plate 32 to move up and down; and a plurality of gripper cylinders 34 spaced apart on the gripper fixing plate 32; the fourth cylinder 33 drives the plurality of gripper cylinders 34 to move up and down; and the linear module 29 drives the plurality of gripper cylinders 34 to move left and right.

[0031] Specifically, the material handling mechanism 5 combines a linear module 29 with a multi-stage cylinder structure to achieve precise handling and efficient loading and unloading of multiple screw components, exhibiting excellent flexibility and automation characteristics. Structurally, the horizontally positioned linear module 29 drives the mounting slider 30 to reciprocate left and right, providing horizontal displacement for the gripping components. Multiple third slide rails 31 and gripper fixing plates 32 are installed on the mounting slider 30, working in conjunction with a fourth cylinder 33 to complete the vertical movement of the gripper assembly, thereby achieving rapid vertical lifting and lowering. Multiple gripper cylinders 34 are installed on the gripper fixing plate 32, which can independently control multiple grippers to simultaneously grip or release the screws. Through the coordinated action of the linear module 29 and multiple cylinders, the entire mechanism can efficiently complete the batch handling of multiple screws, with stable operation and high repeatability, greatly improving the working cycle and automation level of the thread inspection system.

[0032] Furthermore, a product feeding misalignment mechanism 35 is provided to move and misalign the screw output by the linear feeder 3; it includes a horizontally arranged slide cylinder 36; the piston rod of the slide cylinder 36 is connected to a misalignment block 37; the top edge of the misalignment block 37 is formed with a placement groove 38 for placing the screw; and the misalignment block 37 is located at the material outlet of the linear feeder.

[0033] Specifically, the feeding misalignment mechanism 35 of this product introduces a misalignment block 37 driven by a slide cylinder 36 at the outlet of the linear feeder 3, achieving lateral misalignment of the screw and effectively improving the efficiency and accuracy of subsequent handling and inspection. The slide cylinder 36 is horizontally positioned, and its piston rod is connected to the misalignment block 37, allowing the misalignment block 37 to reciprocate horizontally. The top edge of the misalignment block 37 has a placement slot 38 for temporarily receiving the screw output from the linear feeder 3. When the cylinder is activated, the misalignment block 37 moves laterally along with the screw, achieving precise misalignment of the material, preventing screw stacking or overlap, and providing more stable single-piece gripping conditions for the material handling mechanism 5. The overall structure is simple and reliable, suitable for material spacing control and separation in high-speed feeding scenarios.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A screw gage testing apparatus comprising a frame (1), characterised in that, The frame (1) is equipped with: Vibratory feeder (2), providing screw components; Linear feeder (3) conveys the screw components; The testing table (4) is used to place and fix the screw for testing operations; The material handling mechanism (5) transports the screw to the testing table (4) for testing. The screw thread detection mechanism (6) detects the upper thread of the screw. The screw thread detection mechanism (7) detects the lower thread of the screw.

2. A screw gage inspection apparatus according to claim 1, wherein The testing table (4) is provided with several sliding blocks (8) spaced apart; and several second cylinders (9) are horizontally arranged on the testing table (4); and the piston rods of the second cylinders (9) are all connected to U-shaped push rods (10); and the second cylinders (9) drive the push rods (10) to slide and engage with the sliding blocks (8); and the sliding blocks (8) are provided with first wedge-shaped seats (11) and second wedge-shaped seats (12) spaced apart inside; and when the push rods (10) move into the sliding blocks (8), the first wedge-shaped seats (11) and the second wedge-shaped seats... (12) are brought together; and a return spring (13) is provided between the first wedge seat (11) and the second wedge seat (12); when the push rod (10) moves away from the inside of the slider seat (8), the return spring (13) causes the first wedge seat (11) and the second wedge seat (12) to move away from each other and thus reset; the top of the first wedge seat (11) and the second wedge seat (12) are both provided with clamping pieces (14), so that when the first wedge seat (11) and the second wedge seat (12) are brought together, the two clamping pieces (14) can clamp the screw.

3. A screw gage inspection apparatus according to claim 1, wherein The screw thread detection mechanism (6) includes a vertically arranged first stand (15); and a first cylinder (16) with the piston rod facing downward is provided on one side of the first stand (15); and a first slide rail (17) is provided on the other side of the first stand (15); and a first mounting block (18) is provided that slides up and down with the first slide rail (17); and the first cylinder (16) drives the first mounting block (18) to move up and down along the first slide rail (17); and a first servo motor (19) is provided on the first mounting block (18); and a first go gauge fixing block (20) is connected to the shaft of the first servo motor (19); and a first ring gauge (21) is provided inside the first go gauge fixing block (20); the first servo motor (19) drives the first ring gauge (21) to rotate the screw, and the screw is judged to be qualified by detecting the torque between the motor shaft and the screw.

4. The screw go gauge testing device according to claim 1, characterized in that, The screw thread detection mechanism (7) includes a vertically arranged second stand (22); and a third cylinder (23) with the piston rod facing upward is provided on one side of the second stand (22); and a second slide rail (24) is provided on the other side of the second stand (22); and a second mounting block (25) is provided that slides up and down with the second slide rail (24); and the third cylinder drives the second mounting block (25) to move up and down along the second slide rail (24); and a second servo motor (26) is provided on the second mounting block (25); and a second go gauge fixing block (27) is connected to the shaft of the second servo motor (26); and a second ring gauge (28) is provided inside the second go gauge fixing block (27); the second servo motor (26) drives the second ring gauge (28) to rotate the screw, and the screw is judged to be qualified by detecting the torque between the motor shaft and the screw.

5. The screw gauge testing device according to claim 1, characterized in that, The material handling mechanism (5) includes a horizontally arranged linear module (29); and the linear module (29) is provided with a mounting slider (30) that moves back and forth synchronously with it; and the mounting slider (30) is provided with a number of third slide rails (31) at intervals; and a gripper fixing plate (32) is provided that slides up and down with the third slide rails (31); and the mounting slider (30) is provided with a fourth cylinder (33) that drives the gripper fixing plate (32) to move back and forth up and down; and the gripper fixing plate (32) is provided with a number of gripper cylinders (34) at intervals; the fourth cylinder (33) drives the number of gripper cylinders (34) to move back and forth up and down; and the linear module (29) drives the number of gripper cylinders (34) to move back and forth left and right.

6. The screw go gauge testing device according to claim 1, characterized in that, It is also provided with a product feeding misalignment mechanism (35) to move and misalign the screw output by the linear feeder (3); it includes a horizontally arranged slide cylinder (36); and the piston rod of the slide cylinder (36) is connected to a misalignment block (37); and the top edge of the misalignment block (37) is formed with a placement slot (38) for placing the screw; and the misalignment block (37) is located at the material outlet of the linear feeder.

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