Nut inner tooth detection device

Abstract

The utility model discloses a nut inner tooth detection equipment includes: feeding assembly, and it carries out the conveyance to the nut of being detected to detection assembly, and it includes lifting drive part, rotary drive part and detection piece. Through setting up the detection piece with first detection part, second detection part and third detection part, make when detecting the nut inner tooth, after feeding assembly conveying nut to the detection site of detection assembly, lifting drive part drives detection piece first to move to the direction of being close to nut, while rotary drive part drives detection piece to continue rotating, and make first detection part to pass through the nut inner tooth, carry out the detection whether the nut inner tooth is penetrated, then second detection part moves to the nut inner tooth, then cooperation detection piece rotates, and the torque of nut inner tooth is detected, then third detection part and nut inner tooth contact, and the detection whether the nut inner tooth is too big, make when detecting the nut, can carry out multiple detection to the nut inner tooth simultaneously, improve the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nut testing technology, specifically to a device for testing the internal threads of a nut. Background Technology

[0002] The internal thread of a nut refers to the thread structure formed inside the nut during machining. It is used to cooperate with bolts, screws, or pipe fittings to achieve functions such as fastening connection or thread conversion. After the nut is produced, the internal thread of the nut usually needs to be inspected to screen out defective products in the nut production process. The internal thread inspection of the nut usually needs to check whether the internal thread is continuous, whether the internal thread torque of the nut meets the standard, and whether the internal thread is too large.

[0003] Chinese utility model patent CN202322023776.2 discloses an automatic nut internal thread detection mechanism. This mechanism uses a vibratory feeder to transport nuts one by one to a rotating disk. The rotating disk and a baffle allow the nuts to rotate to a clamping point and be clamped. A torque detection device automatically detects the internal thread of the nut. When the torque of the screw and internal thread rotation meets the standard, the nut enters the first collection box; otherwise, it enters the second collection box. This achieves automatic detection and sorting. However, this detection method can only perform one type of detection and cannot detect whether the nut's internal thread is through or too small. Furthermore, the detection is not precise enough, affecting the accuracy of the nut internal thread detection. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a nut internal thread detection device to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A nut internal thread detection device includes: a feeding assembly for conveying the nut to be detected; and a detection assembly including a lifting drive, a rotating drive, and a detection component. The lifting drive is disposed on the conveying path of the feeding assembly. The rotating drive is connected to the driving end of the lifting drive and drives the rotating drive to move axially along the internal thread of the nut to be detected. The detection component is connected to the driving end of the rotating drive and extends in the direction directly opposite to the internal thread of the nut to be detected. The rotating drive drives the detection component to rotate. The detection component has a first detection part at one end near the nut to be detected, the diameter of which is smaller than the diameter of the internal thread of the nut to be detected. The detection component has a second detection part in its middle section for detecting the torque of the internal thread of the nut to be detected. The detection component has a third detection part on the side away from the nut, the diameter of which is larger than the diameter of the internal thread of the nut to be detected.

[0006] Preferably, the detection component further includes a detection adjustment component, which is connected to the lifting drive component and drives the lifting drive component to perform adjustment.

[0007] Preferably, the detection component further includes a displacement sensor, which is disposed on the side of the feeding component away from the detection component, and the displacement sensor detects the displacement distance of the detection component.

[0008] Preferably, the feeding assembly includes a feeding trough and a feeding drive. The feeding trough carries and guides the nut to be tested, and the feeding drive is disposed at one end of the feeding trough and pushes the nut to be tested in the feeding trough.

[0009] Preferably, a nut internal thread detection device further includes a clamping assembly, which is disposed on the conveying path of the feeding trough and clamps the nut to be detected.

[0010] Preferably, the clamping assembly includes a clamping drive and a clamping member. The clamping drive is disposed on one side of the feeding trough, and the clamping member is connected to the drive end of the clamping drive and is located on the conveying path of the feeding trough.

[0011] Preferably, a nut internal thread testing device further includes a material distribution component, which is disposed on the conveying path of the feeding component and discards defective products after they have been tested by the testing component.

[0012] Preferably, the material distribution component includes a discharge chute, a material distribution drive, and a throwing chute. The discharge chute is located at the end of the conveying path of the feeding component, the material distribution drive is located on the upper part of the conveying path of the feeding component, and the throwing chute is located on one side of the conveying path of the feeding component. The material distribution drive pushes the nuts that are detected as defective to the throwing chute.

[0013] Preferably, a nut internal thread detection device further includes a feeding component, which is disposed on one side of the feeding component and feeds the nut into the feeding component.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting up a detection component with a first detection section, a second detection section, and a third detection section, when detecting the internal threads of a nut, after the feeding assembly delivers the nut to the detection area of ​​the detection component, the lifting drive drives the detection component to move closer to the nut, while the rotation drive drives the detection component to rotate continuously, causing the first detection section to pass through the internal threads of the nut to detect whether the internal threads are penetrated. Then, the lifting drive continues to drive the detection component to move towards the nut until the second detection section moves to the internal threads of the nut. Then, in conjunction with the rotation of the detection component, the torque of the internal threads of the nut is detected. Then, the lifting drive continues to drive the detection component to move towards the nut until the third detection section contacts the internal threads of the nut to detect whether the internal threads of the nut are too large. This allows multiple tests on the internal threads of the nut to be performed simultaneously during nut testing, improving testing efficiency and avoiding the situation where traditional nut testing devices can only complete one test at a time and have poor testing accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is another structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the detection component structure of this utility model; Figure 4 This is another structural schematic diagram of the present utility model; Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0016] In the attached diagram: 1. Feeding assembly; 2. Detection assembly; 3. Clamping assembly; 4. Distributing assembly; 5. Feeding assembly; 11. Feed chute; 12. Feed drive unit; 21. Lifting drive component; 22. Rotation drive component; 23. Detection component; 24. Detection adjustment component; 25. Displacement sensing component; 231. First detection unit; 232. Second detection unit; 233. Third detection unit; 31. Clamping drive component; 32. Clamping component; 41. Discharge chute; 42. Material distribution drive unit; 43. Throwing chute. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 5 As shown, the present invention provides a nut internal thread detection device comprising: a feeding assembly 1 for conveying the nut to be detected; and a detection assembly 2, comprising a lifting drive 21, a rotating drive 22, and a detection component 23. The lifting drive 21 is disposed on the conveying path of the feeding assembly 1. The rotating drive 22 is connected to the driving end of the lifting drive 21, and the lifting drive 21 drives the rotating drive 22 to move axially along the internal thread of the nut to be detected. The detection component 23 is connected to the driving end of the rotating drive 22, and the extension direction of the detection component 23 is directly opposite to the internal thread of the nut to be detected. The rotating drive 22 drives the detection component 23. 3. Rotation, so that while the detection element 23 is continuously rotated by the rotation drive 22, the rotation drive 22 can be controlled by the lifting drive 21 to drive the detection element 23 to move up and down. The detection element 23 has a first detection part 231 at the end near the nut to be tested. The diameter of the first detection part 231 is smaller than the internal thread diameter of the nut to be tested. The middle part of the detection element 23 has a second detection part 232, which detects the internal thread torque of the nut to be tested. The side of the detection element 23 away from the nut has a third detection part 233. The diameter of the third detection part 233 is larger than the internal thread diameter of the nut to be tested.

[0019] By setting up a detection element 23 with a first detection part 231, a second detection part 232, and a third detection part 233, when detecting the internal teeth of a nut, after the feeding assembly 1 delivers the nut to the detection part of the detection assembly 2, the lifting drive 21 drives the detection element to move closer to the nut, while the rotation drive 22 drives the detection element 23 to rotate continuously, causing the first detection part 231 to pass through the internal teeth of the nut to detect whether the internal teeth of the nut have penetrated. Then, the lifting drive 21 continues to drive the detection element 23 to move towards the nut until the second detection part 232 moves to the internal teeth of the nut. Then, in conjunction with the rotation of the detection element 23, the torque of the internal teeth of the nut is detected. Then, the lifting drive 21 continues to drive the detection element to move towards the nut until the third detection part 233 contacts the internal teeth of the nut to detect whether the internal teeth of the nut are too large. This allows multiple tests on the internal teeth of the nut to be performed simultaneously when detecting the nut, improving detection efficiency and avoiding the situation where traditional nut detection devices can only complete one test at a time and have poor detection accuracy.

[0020] The diameter of the first detection part 231 is slightly smaller than the diameter of the innermost part of the nut's internal thread. This allows the first detection part 231 to be able to penetrate the nut's internal thread when it moves to the nut's internal thread. If the first detection part 231 cannot penetrate the nut's internal thread, the nut is determined to be defective.

[0021] The diameter and thread of the second detection unit 232 are adapted to the internal thread of the nut, so that when the second detection unit 232 moves to the internal thread of the nut to be tested, the roughness of the internal thread and the thread angle of the nut can be detected based on the resistance encountered by the second detection unit 232 when it is raised, lowered and rotated. If the resistance encountered by the second detection unit 232 is not within the specified range, the nut is determined to be a defective product.

[0022] The diameter of the third detection part 233 is slightly larger than the diameter of the internal thread of the nut. This allows the third detection part 233 to be able to penetrate the internal thread of the nut when it moves to the point where it is to be tested. If the third detection part 233 can penetrate the internal thread of the nut, the opening of the internal thread is too large, and the nut is determined to be defective.

[0023] The detection assembly 2 also includes a detection adjustment component 24, which is connected to the lifting drive component 21. The detection adjustment component 24 drives the lifting drive component 21 to adjust, so that the lifting drive component 21, the rotation drive component 22 and the detection component 23 can be adjusted according to the size of the nut to be detected. This allows the detection component 23 to move away from or closer to the feeding assembly 1 and maintain this distance to detect the nut.

[0024] The detection component 2 also includes a displacement sensor 25, which is located on the side of the feeding component 1 away from the detection component 23. The displacement sensor 25 detects the displacement distance of the detection component 23. The displacement sensor 25 is a laser sensor that can emit a laser to detect the bottom of the detection component 23, thereby achieving the effect of detecting the displacement distance of the detection component 23.

[0025] The feeding assembly 1 includes a feeding trough 11 and a feeding drive 12. The feeding trough 11 carries and guides the nuts to be tested. The feeding drive 12 is located at one end of the feeding trough 11 and pushes the nuts to be tested in the feeding trough 11 so that the nuts can be transported along the grooves opened in the feeding trough 11. The feeding drive 12 applies a pushing force to the nuts, so that the nuts move one by one to the testing position of the testing assembly 2 for testing.

[0026] Specifically, the feeding groove 11 has a hole through which the testing piece 23 passes when it tests the nut, so that the testing piece 23 will not collide with the feeding groove 11 when it tests the nut.

[0027] A nut internal thread detection device also includes a clamping component 3, which is set on the conveying path of the feeding groove 11 and clamps the nut to be detected by the detection piece 23. This can fix the nut to be detected and prevent it from getting stuck on the detection piece 23 and moving up and down or rotating with the detection piece 23, which would prevent the detection piece 23 from separating from the nut being detected and thus avoid affecting the subsequent nut internal thread detection.

[0028] The clamping assembly 3 includes a clamping drive 31 and a clamping member 32. The clamping drive 31 is disposed on one side of the feeding groove 11. The clamping member 32 is connected to the drive end of the clamping drive 31 and is located on the conveying path of the feeding groove 11. The clamping drive 31 clamps the side of the nut without obstructing the internal threads of the nut or its upper and lower parts, thereby ensuring the fixing effect of the nut and without affecting the detection effect of the detection member 23 on the internal threads of the nut.

[0029] A nut internal thread testing device also includes a material distribution component 4, which is set on the conveying path of the feeding component 1 and throws out the defective products after they have been tested by the test piece 23, thereby removing the defective products from the nuts to be tested.

[0030] The material distribution component 4 includes a discharge chute 41, a material distribution drive component 42, and a throwing chute 43. The discharge chute 41 is located at the end of the conveying path of the feeding component 1, the material distribution drive component 42 is located on the upper part of the conveying path of the feeding component 1, and the throwing chute 43 is located on one side of the conveying path of the feeding component 1. The material distribution drive component 42 pushes the nuts that have been detected as defective to the throwing chute 43.

[0031] A nut internal thread testing device further includes a feeding component 5, which is disposed on one side of the feeding component 1 and feeds material into the feeding component 1.

[0032] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A nut internal thread testing device, characterized in that, include: The feeding assembly (1) conveys the nuts to be inspected; as well as The detection component (2) includes a lifting drive (21), a rotating drive (22), and a detection component (23). The lifting drive (21) is disposed on the conveying path of the feeding component (1). The rotating drive (22) is connected to the driving end of the lifting drive (21), and the lifting drive (21) drives the rotating drive (22) to move axially along the internal tooth of the nut to be detected. The detection component (23) is connected to the driving end of the rotating drive (22), and the extension direction of the detection component (23) is directly opposite to the internal tooth of the nut to be detected. The driving component (22) drives the detection component (23) to rotate. The detection component (23) has a first detection part (231) at one end near the nut to be tested. The diameter of the first detection part (231) is smaller than the internal thread diameter of the nut to be tested. The detection component (23) has a second detection part (232) in the middle. The second detection part (232) detects the internal thread torque of the nut to be tested. The detection component (23) has a third detection part (233) on the side away from the nut. The diameter of the third detection part (233) is larger than the internal thread diameter of the nut to be tested.

2. The nut internal thread detection device according to claim 1, characterized in that: The detection component (2) further includes a detection adjustment component (24), which is connected to the lifting drive component (21) and drives the lifting drive component (21) to make adjustments.

3. The nut internal thread detection device according to claim 1, characterized in that: The detection component (2) further includes a displacement sensor (25), which is disposed on the side of the feeding component (1) away from the detection component (23), and the displacement sensor (25) detects the displacement distance of the detection component (23).

4. The nut internal thread detection device according to claim 1, characterized in that: The feeding assembly (1) includes a feeding groove (11) and a feeding drive (12). The feeding groove (11) carries and guides the nut to be tested. The feeding drive (12) is located at one end of the feeding groove (11) and pushes the nut to be tested in the feeding groove (11).

5. The nut internal thread detection device according to claim 4, characterized in that: It also includes a clamping assembly (3), which is disposed on the conveying path of the feeding trough (11) and clamps the nut for detecting the test piece (23).

6. The nut internal thread detection device according to claim 5, characterized in that: The clamping assembly (3) includes a clamping drive (31) and a clamping member (32). The clamping drive (31) is disposed on one side of the feeding trough (11), and the clamping member (32) is connected to the drive end of the clamping drive (31) and is located on the conveying path of the feeding trough (11).

7. The nut internal thread detection device according to claim 1, characterized in that: It also includes a material distribution component (4), which is located on the conveying path of the feeding component (1) and throws out the defective products after they have been detected by the detection component (23).

8. The nut internal thread detection device according to claim 7, characterized in that: The material distribution component (4) includes a discharge chute (41), a material distribution drive (42), and a throwing chute (43). The discharge chute (41) is located at the end of the conveying path of the feeding component (1), the material distribution drive (42) is located on the upper part of the conveying path of the feeding component (1), and the throwing chute (43) is located on one side of the conveying path of the feeding component (1). The material distribution drive (42) pushes the nuts that have been detected as defective to the throwing chute (43).

9. A nut internal thread testing device according to any one of claims 1-8, characterized in that: It also includes a feeding component (5), which is disposed on one side of the feeding component (1) and feeds material into the feeding component (1).

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