A device for detecting the length of a roll of staples

Abstract

The utility model relates to length detection device technical field especially relates to a kind of roll nail production length detection device, it includes detection platform, and detection platform upside is provided with roll nail length detection mechanism;Roll nail length detection mechanism includes light shield box, and light shield box is fixedly inserted with guide tube, and the guide tube bottom is provided with sliding slot, and the sliding slot inboard is slidably provided with arc plate, and the guide tube bottom is fixedly connected with connecting base, and the connecting base bottom is fixedly connected with folding seat, and folding seat and arc plate bottom between fixed mounting have pressure sensor, and light shield box end portion is screw-connected and is installed with cover, and cover is fixedly installed with high-definition camera, and cover inner wall is fixedly installed with folding rod, and folding rod end portion is fixedly installed with lamp shade, and lamp shade inboard is fixedly installed with LED lamp group.The utility model is provided with roll nail length detection mechanism, utilizes optical instrument to measure, and measurement accuracy is higher, and detection process is very fast, and it is easy to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of length detection devices, and in particular to a length detection device for coil nail production. Background Technology

[0002] Coil nails are industrial fasteners that use copper-plated iron wire and other connectors to string multiple nails together into a coil. They are a type of nail and are mainly used in industries such as construction, decoration, furniture manufacturing, and wooden box packaging. The angle between the connector and the center line of the nail shank is 0 to 90 degrees, making them suitable for continuous operation of pneumatic nailing machines and improving construction efficiency.

[0003] Currently, common methods for measuring the length of coiled nails on the market have many limitations. Traditional manual caliper measurement is not only inefficient, severely restricting production speed, but also its accuracy is highly dependent on the operator's experience and skill level, making it difficult to avoid human error. It cannot meet the demands for rapid and accurate testing in large-scale production. While some infrared measurement devices improve testing speed to a certain extent, they require direct contact between the device and the coiled nail. In practice, this may cause scratches or other damage to the surface of the nail, affecting the product's appearance. Furthermore, the accuracy is significantly reduced for coiled nails with unusual shapes or in complex environments.

[0004] To address the shortcomings of the aforementioned technologies, we propose a device for detecting the production length of coil nails. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for detecting the length of coil nails during production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A coil nail production length detection device includes a detection platform with a coil nail length detection mechanism on its upper side. The coil nail length detection mechanism includes a light-shielding box with a guide cylinder fixedly inserted into it. The bottom of the guide cylinder has a groove, and an arc plate is slidably arranged inside the groove. A connecting base is fixedly connected to the bottom of the guide cylinder, and a folding seat is fixedly connected to the bottom of the connecting base. A pressure sensor is fixedly installed between the folding seat and the bottom of the arc plate. A cover is screwed to the end of the light-shielding box, and a high-definition camera is fixedly installed on the cover. A folding rod is fixedly installed on the inner wall of the cover, and a lampshade is fixedly installed at the end of the folding rod. An LED light group is fixedly installed inside the lampshade.

[0008] Furthermore, both the guide cylinder and the light-shielding box are inclined, and a conical hopper is fixedly installed at the upper port of the guide cylinder.

[0009] Furthermore, the feed tube is made of high-purity fused silica glass.

[0010] Furthermore, the inner diameter of the guide cylinder is slightly larger than the diameter of the coil nail.

[0011] Furthermore, a base is fixedly connected to the bottom of the light-shielding box, and the base is fixedly installed on the upper side of the testing platform.

[0012] Furthermore, a dark black light-absorbing film is affixed to the inner wall of the light-shielding box.

[0013] Furthermore, a controller and a material trough are fixedly installed on the upper side of the testing platform.

[0014] Furthermore, a data export interface is provided on the side of the controller.

[0015] Compared with related technologies, the coil nail production length detection device proposed in this utility model has the following beneficial effects:

[0016] In this invention, a coil nail production length detection device is described. Through a coil nail length detection mechanism, the coil nail to be tested is placed in a guide cylinder. When the coil nail slides to the upper side of the arc plate, a pressure sensor detects a pressure signal. Simultaneously, an LED light group and a high-definition camera are activated. The high-definition camera captures a high-definition image of the coil nail in the guide cylinder and transmits the image to a controller. The controller calculates the pixel length of the object in the image using an image processing algorithm. Given that the distance between the center of the guide cylinder and the high-definition camera is a fixed value, a proportional model is constructed based on parameters such as the camera's focal length and pixel density to convert the pixel length into the actual physical length. Its core principle is based on the geometric mapping of "similar triangles"—establishing a proportional coefficient through the known correspondence between the actual distance and the number of image pixels to achieve length conversion. Finally, the controller outputs a precise measurement result. Measurement is performed using optical instruments, resulting in high accuracy. The detection process is also very fast and convenient to operate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a coil nail production length detection device proposed in this utility model. Figure 1 ;

[0018] Figure 2 This is a three-dimensional structural diagram of a coil nail production length detection device proposed in this utility model. Figure 2 ;

[0019] Figure 3 This is a three-dimensional structural diagram of the coil nail length detection mechanism;

[0020] Figure 4 A three-dimensional disassembled structural diagram of the coil nail length detection mechanism;

[0021] Figure 5 A three-dimensional structural diagram of some components of the coil nail length detection mechanism. Figure 1 ;

[0022] Figure 6 A three-dimensional structural diagram of some components of the coil nail length detection mechanism. Figure 2 ;

[0023] Figure 7 A three-dimensional structural diagram of some components of the coil nail length detection mechanism. Figure 3 .

[0024] In the diagram: 1. Detection table; 2. Controller; 3. Data export interface; 4. Material trough; 5. Coil length detection mechanism; 51. Base; 52. Light shield; 53. Guide cylinder; 54. Conical hopper; 55. Cover; 56. Slide groove; 57. Arc plate; 58. Connecting base; 59. Folding seat; 510. Pressure sensor; 511. Dark black light-absorbing film; 512. High-definition camera; 513. Folding rod; 514. Lampshade; 515. LED light group. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Reference Figures 1-7 A coil nail production length detection device includes a detection platform 1, on which a coil nail length detection mechanism 5 is installed. The coil nail length detection mechanism 5 includes a light-shielding box 52, on which a guide cylinder 53 is fixedly inserted. A groove 56 is opened at the bottom of the guide cylinder 53, and an arc plate 57 is slidably arranged inside the groove 56. A connecting base 58 is fixedly connected to the bottom of the guide cylinder 53, and a folding seat 59 is fixedly connected to the bottom of the connecting base 58. A pressure sensor 510 is fixedly installed between the folding seat 59 and the bottom of the arc plate 57. A cover 55 is screwed to the end of the light-shielding box 52. A high-definition camera 512 is fixedly installed on the cover 55. A folding rod 513 is fixedly installed on the inner wall of the cover 55. A lampshade 514 is fixedly installed at the end of the folding rod 513, and an LED light group 515 is fixedly installed inside the lampshade 514.

[0027] With the above-mentioned setup, the LED light group 515 provides supplementary lighting for the shooting of the high-definition camera 512, and the setting of the light-shielding box 52 ensures that the entire shooting process is in an internal light-shielding environment, avoiding interference from external light and improving the shooting clarity.

[0028] In this method, a controller 2 and a material trough 4 are fixedly installed on the upper side of the testing table 1, and a data export interface 3 is provided on the side of the controller 2.

[0029] With the above settings, data export interface 3 is used to provide a data export and transmission interface.

[0030] In this configuration, both the guide cylinder 53 and the light-shielding box 52 are inclined, and a cone hopper 54 is fixedly installed at the upper port of the guide cylinder 53.

[0031] By setting it up in the above manner, the coil nails are put into the cone hopper 54, and then the coil nails have an inclined downward sliding effect. They are then guided into the guide cylinder 53 through the cone hopper 54, and then slide down in the guide cylinder 53, which facilitates the subsequent shooting and inspection process.

[0032] In this method, the feed tube 53 is made of high-purity fused silica glass.

[0033] By using the above-mentioned settings, high-purity fused silica glass material has ultra-high light transmittance and extremely low impurity-induced scattering, thereby avoiding unclear images caused by light scattering.

[0034] In this method, the inner diameter of the guide cylinder 53 is slightly larger than the diameter of the coil nail.

[0035] By setting it up in the above manner, when the coil nail slides down inside the guide cylinder 53, it maintains a parallel direction to the guide cylinder 53.

[0036] In this method, a base 51 is fixedly connected to the bottom of the light-shielding box 52, and the base 51 is fixedly installed on the upper side of the testing table 1.

[0037] With the above-described configuration, the base 51 provides support for the entire light-shielding box 52.

[0038] In this method, a dark black light-absorbing film 511 is affixed to the inner wall of the light-shielding box 52.

[0039] By setting up the above method, the black light-absorbing film 511 can absorb the light that shines on the inner wall of the light-shielding box 52, thus avoiding light reflection that causes blurring of the captured image.

[0040] The working principle of the coil nail production length detection device provided by this utility model is as follows:

[0041] During testing, the operator puts the coil nail to be tested into the cone hopper 54. Since the guide cylinder 53 is set at an angle, the coil nail slides down the inner wall of the guide cylinder 53 under the action of gravity. The guide cylinder 53 is made of high-purity fused silica glass, and its inner diameter is slightly larger than the diameter of the coil nail. This ensures that the coil nail can slide smoothly and that it always maintains a parallel posture with the guide cylinder 53 during the sliding process, laying the foundation for subsequent accurate shooting. When the coil nail slides to the upper side of the arc plate 57 at the bottom of the guide cylinder 53, the gravity of the coil nail is transmitted to the pressure sensor 510 through the arc plate 57. After the pressure sensor 510 senses the pressure signal, it transmits the signal to the controller 2. After receiving the signal, the controller 2 simultaneously starts the LED light group 515 in the light shield 52 and the high-definition camera 512 on the cover 55.

[0042] The dark black light-absorbing film 511 pasted on the inner wall of the light-shielding box 52 absorbs internal light, preventing light reflection from interfering with the shooting. The LED light group 515, after being focused by the lamp cover 514, provides uniform and stable illumination for the coil nails in the guide cylinder 53, ensuring that the high-definition camera 512 can clearly capture the image of the coil nails in the guide cylinder 53. The high-definition image of the coil nails captured by the high-definition camera 512 is transmitted to the controller 2 in real time. The controller 2 uses image processing algorithms to calculate the pixel length of the coil nails in the image. Since the distance between the center of the guide cylinder 53 and the high-definition camera 512 is a fixed value, a proportional model can be constructed by combining parameters such as the camera focal length and pixel density. Based on the geometric mapping principle of "similar triangles", the pixel length is converted into the actual physical length. After the conversion is completed, the controller 2 outputs the accurate measurement result of the coil nail length. At the same time, the coil nails that have been detected continue to slide down the guide cylinder 53 and finally fall into the material trough 4. If it is necessary to save or analyze the detection data, the data can be exported through the data export interface 3 on the side of the controller 2.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for detecting the production length of coil nails, characterized in that, Includes a testing table (1), and a coil nail length testing mechanism (5) is provided on the upper side of the testing table (1); The coil length detection mechanism (5) includes a light shield box (52), a guide cylinder (53) is fixedly inserted into the light shield box (52), a sliding groove (56) is opened at the bottom of the guide cylinder (53), an arc plate (57) is slidably arranged inside the sliding groove (56), a connecting base (58) is fixedly connected to the bottom of the guide cylinder (53), a folding seat (59) is fixedly connected to the bottom of the connecting base (58), a pressure sensor (510) is fixedly installed between the folding seat (59) and the bottom of the arc plate (57), a cover (55) is screwed to the end of the light shield box (52), a high-definition camera (512) is fixedly installed on the cover (55), a folding rod (513) is fixedly installed on the inner wall of the cover (55), a lampshade (514) is fixedly installed at the end of the folding rod (513), and an LED light group (515) is fixedly installed inside the lampshade (514).

2. The coil nail production length detection device according to claim 1, characterized in that, Both the guide cylinder (53) and the light shield (52) are inclined, and a cone bucket (54) is fixedly installed at the upper port of the guide cylinder (53).

3. The coil nail production length detection device according to claim 1, characterized in that, The feed tube (53) is made of high-purity fused silica glass.

4. The coil nail production length detection device according to claim 1, characterized in that, The inner diameter of the guide cylinder (53) is slightly larger than the diameter of the coil nail.

5. The coil nail production length detection device according to claim 1, characterized in that, The bottom of the light-shielding box (52) is fixedly connected to a base (51), and the base (51) is fixedly installed on the upper side of the testing table (1).

6. The coil nail production length detection device according to claim 1, characterized in that, The inner wall of the light-shielding box (52) is covered with a dark black light-absorbing film (511).

7. The coil nail production length detection device according to claim 1, characterized in that, The controller (2) and the material trough (4) are fixedly installed on the upper side of the testing station (1).

8. The coil nail production length detection device according to claim 7, characterized in that, The controller (2) has a data export interface (3) on its side.

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