A device for detecting the insertion and removal of automotive nut inserts

Abstract

This utility model discloses a device for detecting the insertion and removal of automotive nut inserts, belonging to the technical field of mechanical testing equipment. The device includes a base, a telescopic detection mechanism, and a shock-absorbing and fixing mechanism mounted on the base. The core of the device lies in the fact that the shock-absorbing and fixing mechanism includes a platform, a clamping plate rotatably mounted around a pivot axis for holding the nut insert, and a spring and a shock-absorbing pad acting between the platform and the base. This utility model solves the problem of poor stability and easy damage to workpiece threads caused by vibration in existing detection devices. During testing, the clamping plate can rotate synchronously with the workpiece to release torque and avoid thread damage; simultaneously, the spring and shock-absorbing pad effectively absorb multi-directional vibrations, ensuring the stability and detection accuracy of the device and extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of automated testing technology, and in particular to a device for detecting the insertion and removal of automotive nut inserts. Background Technology

[0002] Automotive nut inserts are critical fasteners widely used in automobile manufacturing. Their hole diameter and the quality of their internal threads directly affect the assembly quality and safety performance of the entire vehicle. To ensure product quality, nut inserts need to be rigorously inspected, especially in mass production, where the application of automated inspection equipment is becoming increasingly common.

[0003] Existing automated testing devices typically use a motor to drive the testing probe (similar to a bolt) to rotate, simulating the bolt tightening process to determine whether the thread of the nut insert is qualified. However, during automated testing, the high-speed rotation of the motor inevitably generates mechanical vibration, which is transmitted to the entire device. On the one hand, this may cause the small nut insert being tested to shift or even fall off in the fixture, resulting in testing interruption or misjudgment of results. On the other hand, continuous vibration will also affect the stability and testing accuracy of the equipment itself.

[0004] Furthermore, when the detection probe is fully engaged with a qualified nut insert, a tight connection is formed between the two. If the fixture still rigidly fixes the nut insert at this time, and the drive motor continues to apply rotational torque, excessive friction and stress will be generated on the tight threaded contact surface of the two, which can easily lead to damage to the threads of the detection probe or the nut insert itself, i.e., the "live thread" phenomenon. This will not only damage the workpiece under test, but also significantly shorten the service life of the expensive detection probe. Therefore, how to effectively suppress vibration interference and avoid thread damage while achieving efficient automated detection is a technical problem that urgently needs to be solved in this field.

[0005] Therefore, this utility model proposes an insertion and removal detection device for automotive nut inserts to address the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of automotive nut insert insertion and removal detection devices, such as the impact of vibration during detection on stability and accuracy, and the easy damage to the workpiece threads due to excessive rotation, this utility model aims to provide an automotive nut insert insertion and removal detection device with an improved structure that can effectively solve the above problems.

[0007] Part Two: Core Technology Solutions

[0008] This utility model provides an insertion and removal detection device for automotive nut inserts, comprising: a base, and a telescopic detection mechanism disposed above the base, the telescopic detection mechanism including a rotatable and axially movable detection threaded rod; and a shock-absorbing fixing mechanism disposed on the base.

[0009] The shock-absorbing fixing mechanism includes a platform and a rotating shaft passing through the platform.

[0010] Furthermore, the shock-absorbing and fixing mechanism also has a clamping plate that is rotatably arranged around the rotating shaft. The clamping plate is used to fix the nut insert to be tested. The shock-absorbing and fixing mechanism also has a spring and a shock-absorbing pad that act between the platform and the base.

[0011] Part Three: Preferred Technical Solutions

[0012] Preferably, the shock-absorbing fixing mechanism further includes a clamp plate detachably mounted on the card plate, the clamp plate being used to directly accommodate the nut insert.

[0013] Preferably, the shock-absorbing fixing mechanism further includes an end plate fixed to the base, and a second bolt that passes vertically through the platform and is connected to the end plate.

[0014] Preferably, the spring is sleeved on the second bolt and abuts against the surface of the platform; the shock-absorbing pad is disposed between the side of the platform and the end plate.

[0015] Preferably, the second bolt is further threaded with a first nut and a second nut, which are located on the upper and lower sides of the platform, respectively.

[0016] Preferably, the device further includes a support plate; the telescopic detection mechanism is mounted on the support plate and includes an electric push rod for driving the axial movement of the detection threaded rod, and a motor for driving the rotation of the detection threaded rod.

[0017] Preferably, the telescopic detection mechanism further includes a first fixed plate and a second fixed plate; the electric push rod is connected to the first fixed plate, and the motor is mounted on the first fixed plate and connected to the second fixed plate.

[0018] Preferably, the telescopic detection mechanism further includes a third fixing plate and a fourth fixing plate; the detection threaded rod passes through and is clamped between the fixing holes of the third fixing plate and the fourth fixing plate; the fourth fixing plate is slidably disposed on the second fixing plate.

[0019] Preferably, the second fixing plate is provided with a sliding groove, and the fourth fixing plate slides along the sliding groove; the telescopic detection mechanism further includes a first bolt for driving the fourth fixing plate to move.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model solves the problem that existing testing devices are prone to vibration when the threaded rod rotates, resulting in poor device stability, inaccurate test results, and easy detachment of the nut insert. By setting a vibration-damping and fixing mechanism including a platform, spring, and vibration-damping pad, it achieves the technical effect of effectively absorbing the multi-directional vibration generated during the testing process, ensuring the overall stability of the device, and improving the testing accuracy and reliability.

[0022] 2. This utility model solves the "live thread" problem in the prior art, which is caused by the continuous rotation of the detection thread rod and the qualified nut insert after meshing, by setting a clamping plate that can rotate around the rotating shaft in the shock-absorbing fixing mechanism to hold the nut insert. It achieves the technical effect of allowing the nut insert to rotate synchronously with the detection thread rod to release torque during testing, effectively avoiding thread damage to the workpiece and the testing device itself, and extending the service life.

[0023] 3. This utility model, by setting up a telescopic detection mechanism driven by an electric push rod and a motor, and in conjunction with a replaceable detection thread rod and clamping plate, solves the problems of traditional detection methods that rely on manual labor, are inefficient, have poor consistency, and have a limited range of applications. It achieves automated insertion, removal, and rotation detection, improves detection efficiency and consistency, and can adapt to the detection needs of different specifications of nut inserts, thus enhancing the technical effect of equipment versatility. Attached Figure Description

[0024] Figure 1 This is a perspective view of an insertion and removal detection device for automotive nut inserts proposed in this utility model;

[0025] Figure 2 This is a split view of the telescopic detection mechanism of an insertion / removal detection device for automotive nut inserts proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the shock-absorbing and fixing mechanism of an insertion and removal detection device for automotive nut inserts proposed in this utility model;

[0027] Figure 4 This is a partial structural exploded view of the shock-absorbing fixing mechanism of the insertion and removal detection device for automotive nut inserts proposed in this utility model.

[0028] Legend:

[0029] 1. Base; 2. Telescopic detection mechanism; 201. Electric push rod; 202. First fixing plate; 203. Motor; 204. Second fixing plate; 205. Slide groove; 206. First bolt; 207. Third fixing plate; 208. Fourth fixing plate; 209. Fixing hole; 210. Detection thread rod; 3. Vibration damping fixing mechanism; 301. End plate; 302. Second bolt; 303. First nut; 304. Second nut; 305. Spring; 306. Vibration damping pad; 307. Platform; 308. Rotating shaft; 309. Clamping plate; 310. Clamping plate; 4. Support plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Example:

[0032] Please refer to Figures 1 to 4 This utility model provides an insertion and removal detection device for automotive nut inserts, which aims to solve the problem that existing automotive nut insert detection devices suffer from poor stability and easy damage to workpiece threads due to vibration during automated detection.

[0033] like Figure 1 As shown, the insertion and removal detection device for automotive nut inserts includes a base 1, a shock-absorbing fixing mechanism 3, a support plate 4, and a telescopic detection mechanism 2. The base 1 serves as the mounting base for the entire device. The shock-absorbing fixing mechanism 3 is installed on the upper surface of the base 1 to clamp and fix the nut insert and absorb the vibration generated during the detection process. The support plate 4 is vertically installed on the base 1 by a fixed connection. The telescopic detection mechanism 2 is installed on the support plate 4 and located directly above the shock-absorbing fixing mechanism 3. It is used to perform insertion, removal, and rotation detection actions on the nut insert.

[0034] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is that the insertion and removal detection device for the automotive nut insert also includes a shock-absorbing fixing mechanism 3, and the shock-absorbing fixing mechanism 3 and the aforementioned base 1 form a specific structural fit and connection relationship.

[0035] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4 The core structure will be described in detail below:

[0036] The shock-absorbing fixing mechanism 3 includes an end plate 301, a platform 307, a second bolt 302, a first nut 303, a second nut 304, a spring 305, and a shock-absorbing pad 306, all fixedly connected to the base 1. The second bolt 302 vertically passes through the platform 307 and connects the platform 307 to the end plate 301. The spring 305 is sleeved on the second bolt 302 and abuts against the surface of the platform 307. The shock-absorbing pad 306 is disposed between the side of the platform 307 and the end plate 301. The first nut 303 and the second nut 304 are connected via... The threaded connection is to the second bolt 302 and located on the upper and lower sides of the platform 307 respectively. This structural combination can effectively absorb and buffer the vibration generated in the horizontal and vertical directions during detection, and improve the stability of the device. In addition, a rotating shaft 308 is also provided on the platform 307, and the clamping plate 309 is rotatably connected around the rotating shaft 308. The clamping plate 310 is detachably installed in the clamping plate 309. This structure, which allows the nut insert to rotate synchronously with the detection thread rod 210, ensures that the torque during engagement can be effectively released, thereby avoiding thread damage.

[0037] For the setting of the power source used to drive the telescopic detection mechanism 2, those skilled in the art can use a variety of conventional methods such as motors and electric push rods. The specific internal structure is a well-known technology in the field and will not be described in detail here.

[0038] Furthermore, in order to achieve automated insertion, removal and rotation detection of the nut insert, this embodiment also optimizes the internal structure of the telescopic detection mechanism 2.

[0039] Reference Figure 1 and Figure 2 The telescopic detection mechanism 2 is mounted on the support plate 4 and includes an electric push rod 201 for driving the detection threaded rod 210 to move axially, and a motor 203 for driving the detection threaded rod 210 to rotate. The telescopic detection mechanism 2 also includes a first fixed plate 202 and a second fixed plate 204. The output end of the electric push rod 201 is fixedly connected to the first fixed plate 202, and the motor 203 is mounted on the first fixed plate 202 and its output end is fixedly connected to the second fixed plate 204. As a clamping and fixing structure for the detection threaded rod 210, the telescopic detection mechanism 2 also... The device includes a third fixing plate 207 and a fourth fixing plate 208. The detection thread rod 210 passes through and is clamped between the fixing holes 209 of the third fixing plate 207 and the fourth fixing plate 208. The fourth fixing plate 208 is slidably disposed on the second fixing plate 204. More specifically, the second fixing plate 204 has a sliding groove 205, and the fourth fixing plate 208 slides along the sliding groove 205. The telescopic detection mechanism 2 also includes a first bolt 206 for driving the fourth fixing plate 208 to move. The detection thread rod 210 can be reliably clamped by rotating the first bolt 206.

[0040] Working principle: First, take out the clamping plate 310 that matches the nut insert to be tested. Then, place the bottom end of the clamping plate 310 into the hole on the surface of the clamping plate 309 and clamp the clamping plate 310 in place. Then, test the nut insert. When the diameter of the nut insert hole matches the diameter of the testing thread rod 210, the testing thread rod 210 will drive the nut insert to rotate synchronously, thereby driving the clamping plate 309 to rotate synchronously around the rotating shaft 308. This avoids the testing thread rod 210 from over-rotating and causing a loose thread. At the same time, the testing thread rod 210 will generate vibration while rotating, and the rotating shaft 308 will... Vibration is transmitted to the platform 307, causing the platform 307 to shake. The shock-absorbing pads 306 on both sides of the platform 307 absorb the horizontal vibration. When the platform 307 shakes vertically, it will drive the shock-absorbing pads 306 to move up and down. When the shock-absorbing pads 306 move upward, they will compress the spring 305, which plays a buffering role. At the same time, the first nut 303 and the second nut 304, which are connected to the second bolt 302, connect the platform 307 to the base 1 through the end plate 301, which increases the stability of the device, thereby reducing the impact of vibration on the detection device and preventing the nut insert from falling out of the clamp 310.

[0041] First, the detection thread rod 210 corresponding to the nut insert to be tested is fixed in the fixing holes 209 of the third fixing plate 207 and the bottom 208 of the fourth fixing plate. Then, the first bolt 206 is rotated. Since the third fixing plate 207 is fixed to the bottom of the second fixing plate 204, the fourth fixing plate 208 will move inward along the slide groove 205 as the first bolt 206 rotates, thereby fixing the detection thread rod 210. Then, the electric push rod 201 installed at the bottom of the support plate 4 is activated. The push rod extends and drives the first fixing plate 202 to descend. The first fixing plate 202 drives the motor 203 connected to it to descend synchronously. The motor 203 drives the second fixing plate 204, whose output end is fixed, to descend, so that the detection thread rod 210 contacts the nut insert fixed inside the clamping plate 310. If the hole of the nut insert is smaller than the diameter of the detection thread rod 210, the bottom end of the detection thread rod 210... If the hole in the nut insert is larger than the diameter of the detection thread rod 210, the bottom end of the detection thread rod 210 will pass directly through the nut insert. If the hole in the nut insert matches the diameter of the detection thread rod 210, the bottom end of the detection thread rod 210 will remain above the nut insert. Then, the motor 203 is started to rotate the second fixing plate 204, causing the detection thread rod 210 to rotate synchronously. If the internal thread of the nut insert is continuous and intact, the bottom end of the detection thread rod 210 will pass through the nut insert while rotating. Otherwise, it will get stuck in the nut insert. Then, the stuck nut insert is removed, thus detecting a qualified nut insert.

Claims

1. A device for detecting the insertion and removal of automotive nut inserts, comprising: Base (1); And a telescopic detection mechanism (2) disposed above the base (1), the telescopic detection mechanism (2) including a rotatable and axially movable detection threaded rod (210). Its features are, The device further includes a shock-absorbing fixing mechanism (3) disposed on the base (1), the shock-absorbing fixing mechanism (3) comprising: Tabletop(307); A rotating shaft (308) is mounted on the platform (307); A clamping plate (309) is rotatably disposed about the pivot (308), the clamping plate (309) being used to fix the nut insert to be tested; And a spring (305) and a shock-absorbing pad (306) acting between the platform (307) and the base (1).

2. The insertion and removal detection device for automotive nut inserts according to claim 1, characterized in that, The shock-absorbing fixing mechanism (3) further includes a clamping plate (310) detachably mounted on the clamping plate (309), the clamping plate (310) being used to directly accommodate the nut insert.

3. The insertion and removal detection device for automotive nut inserts according to claim 1, characterized in that, The shock absorption fixing mechanism (3) also includes an end plate (301) fixed on the base (1) and a second bolt (302) that passes vertically through the platform (307) and is connected to the end plate (301).

4. The insertion and removal detection device for automotive nut inserts according to claim 3, characterized in that, The spring (305) is sleeved on the second bolt (302) and abuts against the surface of the platform (307); the shock-absorbing pad (306) is disposed between the side of the platform (307) and the end plate (301).

5. The insertion and removal detection device for automotive nut inserts according to claim 3, characterized in that, The second bolt (302) is also threaded with a first nut (303) and a second nut (304), which are located on the upper and lower sides of the platform (307), respectively.

6. The insertion and removal detection device for automotive nut inserts according to claim 1, characterized in that, The device also includes a support plate (4); the telescopic detection mechanism (2) is mounted on the support plate (4) and includes an electric push rod (201) for driving the detection threaded rod (210) to move axially, and a motor (203) for driving the detection threaded rod (210) to rotate.

7. The insertion and removal detection device for automotive nut inserts according to claim 6, characterized in that, The telescopic detection mechanism (2) further includes a first fixed plate (202) and a second fixed plate (204); the electric push rod (201) is connected to the first fixed plate (202), and the motor (203) is mounted on the first fixed plate (202) and connected to the second fixed plate (204).

8. The insertion and removal detection device for automotive nut inserts according to claim 7, characterized in that, The telescopic detection mechanism (2) further includes a third fixing plate (207) and a fourth fixing plate (208); the detection threaded rod (210) passes through and is clamped between the fixing holes (209) of the third fixing plate (207) and the fourth fixing plate (208); the fourth fixing plate (208) is slidably disposed on the second fixing plate (204).

9. The insertion and removal detection device for automotive nut inserts according to claim 8, characterized in that, The second fixing plate (204) is provided with a sliding groove (205), and the fourth fixing plate (208) slides along the sliding groove (205); the telescopic detection mechanism (2) also includes a first bolt (206) for driving the fourth fixing plate (208) to move.

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