Detection device for preventing riveting missing and mistaken riveting

Abstract

The utility model discloses an anti-rivet-missing and anti-rivet-mistake detection device, which relates to the technical field of rivet pressing detection and comprises a lower die holder, a base plate is mounted above the lower die holder, a lower clamping plate is mounted above the base plate, a workpiece is arranged above the lower clamping plate, a rivet pressing hole site of the lower clamping plate is arranged in the center, and a rivet pressing hole site of the lower clamping plate is arranged in the center of the lower die holder. A detection channel is formed between the lower die base and the pressing rivet hole site of the lower clamping plate, a detection assembly is installed under the detection channel, and the detection end of the detection assembly and the detection channel are located on the same vertical plane. The problems that when an existing rivet missing prevention detection device is used, detection operation is mainly carried out through an infrared detection device in the lateral upper direction, the structure is easily shielded by a mold and other sheltering objects, detection dead angles easily exist, the detection precision is low, the problem of wrong riveting cannot be detected, and the device is limited are solved.

Description

Technical Field

[0001] This utility model relates to the field of riveting detection technology, specifically a device for detecting missing or incorrect riveting. Background Technology

[0002] In the manufacturing process of automotive parts, many components need to be connected by riveting, such as engine parts and transmission system components. Riveting dies can precisely control the riveting force and position, ensuring the connection quality and stability of the parts. During the riveting process, personnel or inspection devices need to inspect the riveting positions to determine if there are any missing riveting issues.

[0003] For example, announcement number CN207170839U, entitled "Anti-Missing Riveting Equipment," includes a riveting machine and an infrared detection device. The riveting machine includes a support base, a fixed frame located on one side of the support base, a movable frame located on the fixed frame, and a rivet head located on the movable frame. The infrared detection device is connected to the movable frame via a connecting frame. The connecting frame includes a fixed part located on the movable frame and a rotating part connected to the infrared detection device. The infrared detection device can form any angle with the rivet head via the rotating part. The infrared detection device includes an infrared sensor and an alarm. This equipment can promptly detect whether there are any missing rivets using the infrared detection device, and only proceed with the riveting operation after confirming that there are no missing rivets. This conveniently and effectively prevents defective products with missing rivets from entering the next process, improving production efficiency and quality.

[0004] The existing anti-riveting detection device mainly uses an infrared detection device in the upper side direction for detection. This structure is easily blocked by molds and other obstructions, which can easily create blind spots and result in low detection accuracy. It also cannot detect problems such as mis-riveting, thus limiting the device's capabilities. Therefore, it does not meet the current needs, and a new anti-riveting and anti-mis-riveting detection device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a device for detecting missing or incorrect riveting, in order to solve the problem that the existing anti-missing riveting detection devices mentioned in the background art mainly use an infrared detection device in the side-up direction for detection. This structure is easily blocked by molds and other obstructions, which can easily create blind spots in the detection, resulting in low detection accuracy and the inability to detect problems such as incorrect riveting, thus limiting the device's capabilities.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting missing or incorrect riveting, comprising: a lower die base, a pad installed above the lower die base, a lower clamping plate installed above the pad, a workpiece disposed above the lower clamping plate, a riveting hole of the lower clamping plate being located at the center, a detection channel being formed between the lower die base and the riveting hole of the lower clamping plate, and a detection component installed directly below the detection channel, wherein the detection end of the detection component and the detection channel are on the same vertical plane.

[0007] Preferably, the detection component is a spring-type displacement sensor, the upper end of which is equipped with an assembly end, the upper end of which is equipped with a spring tube, and the upper end of the spring tube extends into the detection channel.

[0008] Preferably, an upper assembly block is mounted on the spring tube, and the size of the upper assembly block is larger than that of the spring tube.

[0009] Preferably, the detection component is an infrared ranging sensor, and the upper end of the infrared ranging sensor is provided with an infrared end.

[0010] Preferably, a Z-shaped assembly frame is installed on the outer wall of the detection component, and the assembly frame is assembled with the lower surface of the lower mold base by bolts.

[0011] Preferably, the upper surface of the lower clamping plate is provided with an assembly groove, an assembly block is installed in the middle position inside the assembly groove, and a stud hole is provided in the center of the assembly block, and the stud hole is connected to the detection channel.

[0012] Preferably, limit holes are provided on the outer walls of both sides of the assembly block, and limit components are installed on both sides of the assembly block. The limit components include push blocks, and limit rods that match the limit holes are installed on the outer walls of the push blocks.

[0013] Preferably, a displacement slider is installed below the push block, and a displacement groove is formed below the displacement slider.

[0014] Preferably, an electric telescopic rod is installed at the rear end of the push block, and the telescopic end of the electric telescopic rod is installed in combination with the outer wall of the push block by bolts.

[0015] Preferably, four sets of brackets are installed below the lower mold base, and a base plate is installed at the bottom of the brackets.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) Based on the characteristics of stud riveting displacement, this utility model detects the riveting process by opening a detection channel and using a detection component. During the riveting process, the detection component determines whether the riveting process is completed based on the different changes in the stud displacement detected above. It can also subdivide riveting errors into missing riveting and incorrect riveting. Incorrect riveting can be further subdivided into incorrect long riveting and incorrect short riveting through the detection component. The detection component performs the detection operation in a one-to-one hole manner, with high detection accuracy, and is suitable for riveting molds.

[0018] (2) In this utility model, the assembly block is a replaceable structure. The push block is moved by the electric telescopic rod to realize the insertion and removal of the limit rod and the limit hole. This can effectively facilitate the user to replace the required assembly block according to the size of the stud, and facilitate the user to perform riveting inspection on studs of different sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a bottom view of the lower mold base of this utility model;

[0021] Figure 3 This is an assembly diagram of the first embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the spring-type displacement sensor structure of this utility model;

[0023] Figure 5 This is an assembly diagram of the second embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the lower clamping plate structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the limiting component structure of this utility model;

[0026] In the diagram: 1. Lower mold base; 101. Detection channel; 102. Support; 103. Base plate; 2. Pad plate; 3. Lower clamping plate; 301. Assembly slot; 302. Assembly block; 303. Stud hole; 304. Limiting hole; 4. Detection component; 401. Spring displacement sensor; 402. Assembly end; 403. Upper assembly block; 404. Bourdon tube; 405. Infrared distance sensor; 406. Infrared end; 5. Assembly frame; 6. Limiting component; 601. Electric telescopic rod; 602. Push block; 603. Limiting rod; 604. Displacement slider; 605. Displacement groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Please see Figures 1-7 This utility model provides an embodiment of a device for detecting missing or incorrect riveting, comprising: a lower mold base 1, four sets of brackets 102 installed below the lower mold base 1, and a base plate 103 installed at the bottom of the brackets 102. The brackets 102 and the base plate 103 are configured to raise the lower mold base 1, providing sufficient space for the detection component 4 located between the base plate 103 and the lower mold base 1. A pad 2 is installed above the lower mold base 1, and a lower clamping plate 3 is installed above the pad 2. A workpiece is placed above the lower clamping plate 3, and the riveting hole of the lower clamping plate 3 is located at the center. A detection channel 101 is formed between the lower mold base 1 and the riveting hole of the lower clamping plate 3. The detection component 4 is installed directly below the detection channel 101, and the detection end of the detection component 4 is on the same vertical plane as the detection channel 101. A Z-shaped assembly frame 5 is installed on the outer wall of the detection component 4, and the assembly frame 5 is assembled and installed to the lower surface of the lower mold base 1 by bolts.

[0030] Please see Figure 6 , Figure 7The upper surface of the lower clamping plate 3 has an assembly groove 301. An assembly block 302 is installed in the middle of the assembly groove 301. A stud hole 303 is opened in the center of the assembly block 302, and the stud hole 303 communicates with the detection channel 101. Limiting holes 304 are opened on the outer walls on both sides of the assembly block 302. Limiting components 6 are installed on both sides of the assembly block 302. The limiting components 6 include a push block 602. A limiting rod 603 matching the limiting hole 304 is installed on the outer wall of the push block 602. A displacement slider 604 is installed below the push block 602. A displacement groove 605 is opened below the displacement slider 604. An electric telescopic rod 601 is installed at the rear end of the push block 602, and the telescopic end of the electric telescopic rod 601 is connected to the outer wall of the push block 602 by bolts. 02 is a replaceable structure, allowing users to easily replace assembly blocks 302 with different stud hole sizes 303 according to the size of the installation studs. During fixing, the assembly block 302 is placed in the middle of the assembly groove 301, and the electric telescopic rod 601 is used for telescopic displacement. When it extends, it pushes the push block 602 forward, so that the limiting rod 603 of the push block 602 is inserted into the limiting hole 304, firmly fixing the assembly block 302 and achieving the limiting effect. During this process, the displacement slider 604 below the push block 602 moves with it in the displacement groove 605 to make the displacement process smoother and more stable. During disassembly, the electric telescopic rod 601 retracts backward, driving the push block 602 to move backward, so that the limiting rod 603 disengages from the limiting hole 304, making it convenient for users to remove and replace.

[0031] Please see Figure 3 , Figure 4 The detection component 4 is a spring-type displacement sensor 401, model KPM12R2. An assembly end 402 is mounted on the upper end of the spring-type displacement sensor 401, and a spring tube 404 is mounted on the upper end of the assembly end 402. The upper end of the spring tube 404 extends into the detection channel 101. An upper assembly block 403 is mounted on the spring tube 404, and the size of the upper assembly block 403 is larger than that of the spring tube 404. During normal riveting, the stud is pressed into the product and moves down into the detection channel 101, triggering the internal spring tube 404 to move to the pre-set position. If the pre-set range of the spring-type displacement sensor 401 is within the range, it can be determined that the riveting is normal. If the spring tube 404 is not touched when the stud is missing, it can be determined that the riveting is missing. If the stud is misplaced, the short stud fails to touch the spring tube 404 to move to the corresponding point, while the long stud touches the spring tube 404 and moves beyond the corresponding detection point, which can be regarded as mis-riveting. Through the setting of this detection structure, the riveting process can be effectively detected to prevent missing riveting and riveting. Moreover, the spring-type touch is more stable, the probability of false touch is lower, and the detection accuracy is improved.

[0032] Example 2

[0033] A device for detecting missing or incorrect riveting includes: a lower mold base 1, four sets of brackets 102 installed below the lower mold base 1, and a base plate 103 installed at the bottom of the brackets 102. The brackets 102 and the base plate 103 are configured to raise the lower mold base 1, providing sufficient space for the detection component 4 located between the base plate 103 and the lower mold base 1. A pad 2 is installed above the lower mold base 1, and a lower clamping plate 3 is installed above the pad 2. A workpiece is placed above the lower clamping plate 3, and the riveting hole of the lower clamping plate 3 is located at the center. A detection channel 101 is formed between the lower mold base 1 and the riveting hole of the lower clamping plate 3. The detection component 4 is installed directly below the detection channel 101, and the detection end of the detection component 4 is on the same vertical plane as the detection channel 101. A Z-shaped assembly frame 5 is installed on the outer wall of the detection component 4, and the assembly frame 5 is assembled and installed to the lower surface of the lower mold base 1 by bolts.

[0034] Please see Figure 6 , Figure 7 The upper surface of the lower clamping plate 3 has an assembly groove 301. An assembly block 302 is installed in the middle of the assembly groove 301. A stud hole 303 is opened in the center of the assembly block 302, and the stud hole 303 communicates with the detection channel 101. Limiting holes 304 are opened on the outer walls on both sides of the assembly block 302. Limiting components 6 are installed on both sides of the assembly block 302. The limiting components 6 include a push block 602. A limiting rod 603 matching the limiting hole 304 is installed on the outer wall of the push block 602. A displacement slider 604 is installed below the push block 602. A displacement groove 605 is opened below the displacement slider 604. An electric telescopic rod 601 is installed at the rear end of the push block 602, and the telescopic end of the electric telescopic rod 601 is connected to the outer wall of the push block 602 by bolts. 02 is a replaceable structure, allowing users to easily replace assembly blocks 302 with different stud hole sizes 303 according to the size of the installation studs. During fixing, the assembly block 302 is placed in the middle of the assembly groove 301, and the electric telescopic rod 601 is used for telescopic displacement. When it extends, it pushes the push block 602 forward, so that the limiting rod 603 of the push block 602 is inserted into the limiting hole 304, firmly fixing the assembly block 302 and achieving the limiting effect. During this process, the displacement slider 604 below the push block 602 moves with it in the displacement groove 605 to make the displacement process smoother and more stable. During disassembly, the electric telescopic rod 601 retracts backward, driving the push block 602 to move backward, so that the limiting rod 603 disengages from the limiting hole 304, making it convenient for users to remove and replace.

[0035] Please see Figure 5The detection component 4 is an infrared ranging sensor 405, model E18-R2NA. The upper end of the infrared ranging sensor 405 is equipped with an infrared end 406. During normal riveting, the stud is pressed into the product and moves down into the detection channel 101. The infrared ranging sensor 405 detects whether the stud is at the preset point. When the stud is within the preset point range, it can be judged as normal riveting. When a stud is missing, it fails to reach the detection position, which can be judged as missing riveting. When a stud is misplaced, the short stud is still far from the corresponding point, and the long stud exceeds the corresponding detection point, which is considered as misriveting. Through the setting of this detection structure, the riveting process can be effectively prevented from missing riveting and prevented from being pressed. Moreover, the infrared detection distance is longer, which can be used to detect some long studs during the riveting process.

[0036] 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 illustrative 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. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for detecting missing or incorrect riveting, comprising a lower mold base (1), a pad (2) mounted above the lower mold base (1), and a lower clamping plate (3) mounted above the pad (2), characterized in that: A processing part is provided above the lower clamping plate (3). The riveting hole of the lower clamping plate (3) is located in the center. A detection channel (101) is provided between the lower mold base (1) and the riveting hole of the lower clamping plate (3). A detection component (4) is installed directly below the detection channel (101), and the detection end of the detection component (4) is on the same vertical plane as the detection channel (101).

2. The anti-missing and anti-misaligning riveting detection device according to claim 1, characterized in that: The detection component (4) is a spring displacement sensor (401). The upper end of the spring displacement sensor (401) is equipped with an assembly end (402). The upper end of the assembly end (402) is equipped with a spring tube (404), and the upper end of the spring tube (404) extends into the detection channel (101).

3. The anti-missing and anti-misaligning riveting detection device according to claim 2, characterized in that: An upper assembly block (403) is mounted on the spring tube (404), and the size of the upper assembly block (403) is larger than that of the spring tube (404).

4. The anti-missed riveting and anti-misaligned riveting detection device according to claim 1, characterized in that: The detection component (4) is an infrared ranging sensor (405), and an infrared end (406) is provided at the upper end of the infrared ranging sensor (405).

5. The anti-missing and anti-misaligning riveting detection device according to claim 1, characterized in that: The outer wall of the detection component (4) is equipped with a Z-shaped assembly frame (5), which is installed with the lower surface of the lower mold base (1) by bolts.

6. The anti-missed riveting and anti-misaligned riveting detection device according to claim 1, characterized in that: The upper surface of the lower clamping plate (3) is provided with an assembly groove (301), and an assembly block (302) is installed in the middle position inside the assembly groove (301). The center of the assembly block (302) is provided with a stud hole (303), and the stud hole (303) is connected to the detection channel (101).

7. The anti-missed riveting and anti-misaligned riveting detection device according to claim 6, characterized in that: Limiting holes (304) are provided on the outer walls of both sides of the assembly block (302), and limiting components (6) are installed on both sides of the assembly block (302). The limiting component (6) includes a push block (602), and a limiting rod (603) matching the limiting hole (304) is installed on the outer wall of the push block (602).

8. The anti-missing and anti-misaligning riveting detection device according to claim 7, characterized in that: A displacement slider (604) is installed below the push block (602), and a displacement groove (605) is provided below the displacement slider (604).

9. The anti-missing and anti-misaligning riveting detection device according to claim 8, characterized in that: The rear end of the push block (602) is equipped with an electric telescopic rod (601), and the telescopic end of the electric telescopic rod (601) is installed in combination with the outer wall of the push block (602) by bolts.

10. The anti-missed riveting and anti-misaligned riveting detection device according to claim 1, characterized in that: Four sets of brackets (102) are installed below the lower mold base (1), and a base plate (103) is installed at the bottom of the brackets (102).

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