Full-automatic code spraying device suitable for rod-shaped parts

Abstract

A full-automatic code spraying device suitable for rod-shaped parts comprises a feeding blocking device used for controlling the rod-shaped parts to be fed and fall into a V-shaped frame through a movable blocking block; the V-shaped frame positioning device is used for photographing the rod-shaped part through a visual inspection camera, identifying letters at the bottom of the rod-shaped part according to a picture obtained by photographing so as to read length information of the rod-shaped part, and calculating to obtain the shape and size of the section of the rod-shaped part; the code spraying mechanism is used for controlling a code spraying machine to move in the axis direction of the rod-shaped part to complete code spraying on the rod-shaped part according to the length information of the rod-shaped part and the shape and size of the section of the rod-shaped part, and the sprayed code is cured through a sprayed code curing device; and the pneumatic discharging mechanism is used for opening the V-shaped frame, so that the rod-shaped parts are discharged along the inner wall of the V-shaped frame under the action of gravity. According to the utility model, automatic positioning of the rod-shaped parts can be realized, specifications, models and sectional dimensions of materials can be identified, and flexible full-automatic code spraying of the rod-shaped parts with multiple dimensions can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of automation technology, specifically relating to a fully automatic inkjet printing device suitable for rod-shaped parts. Background Technology

[0002] In recent years, with the continuous expansion of infrastructure construction, steel structures have been widely used in stadiums, stations, bridges, and other buildings due to their excellent mechanical properties and convenient transportation and installation. This has also placed certain demands on the traceability of product quality. Traditional steel structure rod-shaped component production mainly relies on manual identification and measurement, followed by cutting and welding. Therefore, identifying steel structure components and using technologies such as inkjet coding to achieve traceability of steel structure products is particularly important.

[0003] Traditional inkjet printing requires personnel to identify or measure steel structures to determine specifications before applying ink using a die. This necessitates changing number or letter dies, operates in harsh environments, has low production efficiency, is prone to errors, and suffers from poor reliability. Therefore, there is a need to develop a device that can automatically identify steel structural parts, achieving intelligent and automated inkjet printing. Utility Model Content

[0004] The purpose of this invention is to address the problems in the prior art by providing a fully automatic inkjet printing device suitable for rod-shaped parts, which can automatically position rod-shaped parts, identify material specifications and cross-sectional dimensions, and complete fully automatic inkjet printing.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fully automatic inkjet printing device suitable for rod-shaped parts, comprising:

[0007] A feeding blocking device is used to control the feeding of rod-shaped parts into the V-shaped frame via a movable blocking block;

[0008] The V-shaped frame positioning device is used to take pictures of rod-shaped parts with a visual inspection camera, identify the engravings on the bottom of the rod-shaped parts based on the pictures, read the length information of the rod-shaped parts, and calculate the cross-sectional shape and size of the rod-shaped parts.

[0009] The coding mechanism is used to control the coding machine to move along the axis of the rod-shaped part according to the length information and cross-sectional shape and size of the rod-shaped part, and to complete the coding of the rod-shaped part by means of a coding curing device.

[0010] The pneumatic feeding mechanism is used to open the V-shaped frame, allowing rod-shaped parts to be fed along the inner wall of the V-shaped frame under the action of gravity.

[0011] As a preferred embodiment, the V-shaped frame is arranged in several groups at intervals along the axis of the rod-shaped part on the machine frame. Each group of V-shaped frames consists of a loading V-shaped frame and a unloading V-shaped frame, which can be assembled together.

[0012] As a preferred embodiment, the feeding V-shaped frame is disposed in the feeding blocking device, and the unloading V-shaped frame is disposed in the pneumatic unloading mechanism; both the feeding V-shaped frame and the unloading V-shaped frame are hinged and can be rotated and opened.

[0013] As a preferred embodiment, the feeding blocking device further includes a feeding control cylinder. The bottom end of the cylinder body of the feeding control cylinder is connected to the frame via a hinge, and the piston end of the cylinder is hinged to the blocking block. The blocking block is installed on the feeding V-shaped frame. When the rod-shaped part reaches the position of the blocking block, the feeding control cylinder is in a retracted state, and the rod-shaped part is blocked on one side of the feeding V-shaped frame. When the feeding control cylinder receives an instruction to extend, the blocking block falls down, and the rod-shaped part is fed into the V-shaped frame.

[0014] As a preferred embodiment, the pneumatic feeding mechanism further includes a feeding control cylinder. One end of the feeding V-shaped frame is hinged to a connecting rod, allowing the feeding V-shaped frame to rotate around the connecting rod. The feeding control cylinder is hinged to the body of the feeding V-shaped frame, and can lift the feeding V-shaped frame from bottom to top, forming a slope on the inner wall of the feeding V-shaped frame, causing the rod-shaped part to roll along the inner wall of the V-shaped frame under the action of gravity.

[0015] As a preferred solution, the loading V-shaped frames of all groups operate synchronously, and the unloading V-shaped frames of all groups operate synchronously.

[0016] As a preferred embodiment, the V-shaped frame enables self-centering of the circular cross-section rod-shaped part. The V-shaped frame positioning device includes visual inspection cameras respectively installed at the front and rear ends of the V-shaped frame, which take pictures of the rod-shaped part from the front and rear ends of the V-shaped frame.

[0017] As a preferred embodiment, the coding mechanism includes a module, a roller, a guide rail, a coding machine, and a coding curing device; the module is capable of moving up and down and along the guide rail, the roller, the coding machine, and the coding curing device are mounted on the module, and the guide rail is arranged along the axial direction of the rod-shaped part.

[0018] As a preferred embodiment, the guide rail is provided with a rack, and the module is provided with a gear that meshes with the rack. The gear moves along the rack under the drive of the motor.

[0019] As a preferred embodiment, the coding curing device employs a UV curing device.

[0020] Compared with the prior art, this utility model has at least the following beneficial effects:

[0021] This invention is applicable to side marking of rod-shaped parts with different cross-sections and lengths. A movable blocking block controls the feeding of the rod-shaped parts into a V-shaped frame, achieving automatic positioning without manual clamping. Simultaneously, since the centerlines of rod-shaped parts of different specifications are in the same vertical plane, this invention uses a visual inspection camera to photograph the rod-shaped parts. Based on the photographed images, it identifies the engravings on the bottom of the rod-shaped parts to read their length information and calculate their cross-sectional shape and dimensions. Based on this information, it controls the inkjet printer to move to a suitable position on the side of the rod-shaped parts and moves along the axis of the parts to complete the marking. The marking is then cured by a curing device. After marking, the V-shaped frame opens under the drive of a pneumatic feeding mechanism, allowing the rod-shaped parts to be fed along the inner wall of the V-shaped frame under gravity. The entire process requires no manual intervention, achieving flexible, fully automatic marking of rod-shaped parts of various sizes. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This utility model embodiment is applicable to the overall structure diagram of a fully automatic inkjet printing device for rod-shaped parts;

[0024] Figure 2 A schematic diagram of the feeding blocking device in this embodiment of the utility model;

[0025] Figure 3 A schematic diagram of the V-shaped frame positioning device according to an embodiment of this utility model;

[0026] Figure 4 A schematic diagram of the inkjet printing mechanism in this embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the pneumatic feeding mechanism of this utility model embodiment;

[0028] In the attached diagram: 1-Feeding blocking device; 2-V-shaped frame positioning device; 3-Coding mechanism; 4-Pneumatic unloading mechanism; 11-Feeding control cylinder; 12-Blocking block; 13-Feeding V-shaped frame; 21-Visual inspection camera; 31-Module; 32-Roller; 33-Guide rail; 34-Coding machine; 35-Coding curing device; 41-Unloading control cylinder; 42-Unloading V-shaped frame. Detailed Implementation

[0029] 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, those skilled in the art can obtain other embodiments without creative effort.

[0030] Please see Figure 1 This utility model embodiment proposes a fully automatic inkjet printing device suitable for rod-shaped parts, the structure of which includes:

[0031] The feeding blocking device 1 is used to control the feeding of rod-shaped parts into the V-shaped frame via a movable blocking block 12;

[0032] V-shaped frame positioning device 2 is used to take pictures of the rod-shaped part by visual inspection camera 21, identify the engravings on the bottom of the rod-shaped part based on the pictures, read the length information of the rod-shaped part, and calculate the cross-sectional shape and size of the rod-shaped part.

[0033] The coding mechanism 3 is used to control the coding machine 34 to move along the axis of the rod-shaped part to complete the coding of the rod-shaped part according to the length information and cross-sectional shape and size of the rod-shaped part, and to cure the coding through the coding curing device 35.

[0034] The pneumatic feeding mechanism 4 is used to open the V-shaped frame, allowing the rod-shaped parts to be fed along the inner wall of the V-shaped frame under the action of gravity.

[0035] In one possible implementation, the V-shaped frames of this embodiment are arranged in several groups at intervals along the axial direction of the rod-shaped parts on the frame. Each group of V-shaped frames consists of a loading V-shaped frame 13 and a unloading V-shaped frame 42, and the loading V-shaped frame 13 and the unloading V-shaped frame 42 can be assembled together, such as... Figure 5 As shown. The loading V-shaped frame 12 is installed in the loading blocking device 1, and the unloading V-shaped frame 42 is installed in the pneumatic unloading mechanism 4. Both the loading V-shaped frame 13 and the unloading V-shaped frame 42 are hinged and can be rotated and opened / closed. When the rod-shaped part falls into the V-shaped frame, the V-shaped frame can achieve self-centering of the circular cross-section rod-shaped part.

[0036] Please see Figure 2In this embodiment, the feeding blocking device 1 includes a feeding control cylinder 11, which is a pen-shaped cylinder. The feeding control cylinder 11 is arranged horizontally, and the bottom end of the cylinder body of the feeding control cylinder 11 is connected to the frame via a hinge. The piston end of the cylinder is hinged to the blocking block 12, which is installed on the outer end of the feeding V-shaped frame 13. The piston end of the feeding control cylinder 11 can extend and retract horizontally. When the rod-shaped part reaches the position of the blocking block 12, the feeding control cylinder 11 is in a retracted state, and the rod-shaped part is blocked on one side of the feeding V-shaped frame 13. When the feeding control cylinder 11 extends, the blocking block 12 falls, and the rod-shaped part falls into the V-shaped frame.

[0037] Please see Figure 5 In this embodiment, the pneumatic feeding mechanism 4 includes a feeding control cylinder 41, which is arranged vertically. One end of the feeding V-shaped frame 42 is hinged to a connecting rod. The feeding V-shaped frame 42 can rotate around the connecting rod. The feeding control cylinder 41 is hinged to the body of the feeding V-shaped frame 42. The piston end of the feeding control cylinder 41 can extend and retract vertically. Therefore, the feeding control cylinder 41 can lift the feeding V-shaped frame 42 from bottom to top, so that the inner wall of the feeding V-shaped frame 42 forms a slope, and the rod-shaped part rolls along the inner wall of the V-shaped frame under the action of gravity.

[0038] Furthermore, in this embodiment, the loading V-frames 13 of all groups of V-frames operate synchronously, and the unloading V-frames 42 of all groups of V-frames operate synchronously. One end of the unloading V-frame 42 is hinged to the same connecting rod. The V-frames are set with different intervals according to the length of the rod-shaped parts. The lifting of all unloading V-frames 42 is achieved by the lifting transmission of the rod-shaped parts through the unloading control cylinder 41.

[0039] Please see Figure 3 In this embodiment, the V-shaped frame achieves self-centering for the circular cross-section rod-shaped part. The V-shaped frame positioning device 2 includes vision inspection cameras 21 respectively installed at the front and rear ends of the V-shaped frame. The vision inspection cameras 21 take pictures of the rod-shaped part from the front and rear ends of the V-shaped frame. The vision inspection cameras 21 identify the engravings on the bottom of the rod-shaped part to read the length information of the rod-shaped part. The vision software calculates the cross-sectional shape and size of the rod-shaped part. After the calculation is completed, the cross-sectional information of the rod-shaped part is transmitted to the module controller.

[0040] Please see Figure 4 In this embodiment, the coding mechanism 3 includes a module 31, a roller 32, a guide rail 33, a coding machine 34, and a coding curing device 35. The module 31 can move up and down and along the guide rail 33. The roller 32, the coding machine 34, and the coding curing device 35 are mounted on the module 31. The guide rail 33 is arranged along the axial direction of the rod-shaped part.

[0041] In one possible implementation, a rack is provided on the guide rail 33, and a gear is provided on the module 31 to cooperate with the rack. The gear moves along the rack under the drive of the motor, so that the module 31 can move along the guide rail 33.

[0042] Furthermore, in this embodiment, the coding curing device 35 adopts a UV ultraviolet curing device.

[0043] UV curing refers to the process of using medium- and short-wave (300-800 nm) ultraviolet (UV) radiation to stimulate photoinitiators in liquid UV materials, causing them to transform into free radicals or cations. This, in turn, initiates the polymerization of polymeric materials (resins) containing active functional groups into an insoluble and infusible solid coating. By adding photoinitiators (or photosensitizers) to specially formulated resins, and then allowing them to absorb high-intensity UV light from UV curing equipment, active free radicals or ionic groups are generated, initiating polymerization, cross-linking, and grafting reactions. This causes the resin (UV coatings, inks, adhesives, etc.) to transform from liquid to solid within seconds.

[0044] In this embodiment, when the roller 32 contacts the surface of the rod-shaped part, the printhead maintains a fixed distance from the rod-shaped part. The motor drives the gear to move on the guide rail 33 with a rack, and the inkjet printer 34 moves along the axial direction of the rod-shaped part. UV curing devices are installed on both sides of the inkjet printer 34 to cure the ink sprayed by the inkjet printer 34 in a timely manner. After the printing is completed, the module 31 lifts the inkjet printer 34 and other devices, moving them away from the surface of the rod-shaped part and returning them to their original position on the guide rail 33.

[0045] The specific working process of the fully automatic inkjet printing device for rod-shaped parts according to this utility model embodiment includes the following steps:

[0046] (1) When the rod-shaped part reaches the position of the blocking block 12, the feeding control cylinder 11 is in the retracted state, the blocking block 12 keeps the rod-shaped part in a stationary state, and then the sensor recognizes that the rod-shaped part is in place, the feeding control cylinder 11 extends, and drives the blocking block 12 to fall down, and the rod-shaped part falls into the V-shaped frame under the action of gravity.

[0047] (2) A visual inspection camera 21 is set at the front and back of the V-shaped frame. When the rod-shaped part in the V-shaped frame is detected, a picture is taken. The cross-sectional shape and size of the rod-shaped part are calculated by the visual software. The length information of the rod-shaped part is read by recognizing the bottom engraving.

[0048] (3) The inkjet printer 34 and the inkjet curing device 35 are installed on the module 31 directly above the V-shaped frame to achieve lifting. When the roller 32 contacts the rod-shaped part, the inkjet printer 34 is triggered. The module 31 is installed on the gear mechanism. The gear is connected to the motor. Under the drive of the motor, the gear rack mechanism moves along the axis of the rod-shaped part. The inkjet printer 34 prints the code, and then the inkjet curing device 35 cures the code.

[0049] (4) After the inkjet printing is completed, the printed rod-shaped parts are placed in the V-shaped frame. The unloading control cylinder 41 at the bottom of the unloading V-shaped frame 42 extends out, and the rod-shaped parts roll out from the V-shaped frame, realizing the unloading after inkjet printing.

[0050] The visual inspection camera 21 of this invention is used to photograph rod-shaped parts from both ends of a V-frame. This setup ensures that images of the parts are captured from multiple angles, providing a more comprehensive understanding of the parts' appearance and shape. The V-frame supports and positions the rod-shaped parts to ensure they are in the correct position and angle during photography. The visual inspection camera 21 has the ability to identify markings on the bottom of the rod-shaped parts, which contain information about the part's length or other important attributes. By identifying these markings, the camera can automatically read the length information of the rod-shaped parts without manual measurement or input. In addition to reading the marking information, the visual inspection camera 21 also calculates the cross-sectional shape dimensions of the rod-shaped parts using visual software. This involves processing and analyzing the captured images to extract information about key dimensions such as the part's cross-sectional shape, diameter, and roundness. The visual software uses existing image processing algorithms and machine learning techniques to automatically perform these calculations, providing high-precision and reliable results. Existing image processing algorithms and machine learning techniques use edge detection algorithms (such as Canny edge detection) to identify the edges of the parts in the acquired images. The contour of the part is extracted from the edge detection results; the contour is key information for calculating the cross-sectional shape dimensions. Based on the extracted contour information, the cross-sectional shape of the rod-shaped part (such as circular, elliptical, etc.) is identified. Image measurement tools (such as distance measurement, angle measurement, etc.) are used to measure the specific dimensions of the cross-section. For example, for a circular cross-section, its diameter or radius can be measured; for an elliptical cross-section, the lengths of its major and minor axes can be measured. The measurement results are then calibrated for accuracy based on the camera's calibration parameters and the actual dimensions of the image, ensuring the accuracy and reliability of the measurement results.

[0051] The improvement of this utility model lies in the overall hardware structure of the device, and does not involve any improvement to the computer software method. Regarding the visual inspection camera 21 used and how to use visual software to identify the engravings on the rod-shaped parts based on the captured images to read the length information of the rod-shaped parts, or to calculate the cross-sectional shape and size of the rod-shaped parts, there are already relevant existing technologies in the industry, and this is not the innovation of this utility model. Among the relevant existing technologies, patent application number 202110098523.4 discloses an automatic spraying device and method based on visual 3D reconstruction that can automatically spray coating operations, simplifying operation, thereby improving work efficiency, saving production costs, and improving the uniformity of spray coating thickness. Patent application number 201810960357.2 proposes a linear array recognition system for marking characters on the conical surface of fuel rod end caps, designing a system for recognizing marking characters on fuel rod end caps, solving the problems of low efficiency and high labor intensity of existing technologies in recognizing marking characters on the conical surface of fuel rod end caps. Patent application number 201811191287.5 discloses an online labeling robot and method for original label covering, which solves the problem of online dynamic labeling of packaging boxes of different sizes, and can accurately cover existing old labels; significantly improving labeling efficiency, automation and intelligence. Patent application number 202311130847.7 discloses a laser marking method and system for visual positioning of objects in motion, which solves the problem that visual positioning can only be performed when the workpiece is static, and the material conveyor line needs to be stationary when the product arrives at the visual and marking field of view in order to be recognized, thus achieving the purpose of marking the product to the designated position in motion.

[0052] This fully automatic inkjet printing device offers several advantages through its use of a vision inspection camera and vision software for automated inspection. It significantly improves inspection speed and accuracy, reducing the possibility of human error and missed detections. Furthermore, automated inspection reduces labor costs, increases production efficiency, and provides users with a more consistent and reliable means of quality control.

[0053] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A fully automatic inkjet printing device suitable for rod-shaped parts, characterized in that, include: The feeding blocking device (1) is used to control the feeding of rod-shaped parts into the V-shaped frame by means of a movable blocking block (12); V-shaped frame positioning device (2) is used to take pictures of the rod-shaped part by visual inspection camera (21), identify the engravings on the bottom of the rod-shaped part based on the pictures, read the length information of the rod-shaped part, and calculate the cross-sectional shape and size of the rod-shaped part. The coding mechanism (3) is used to control the coding machine (34) to move along the axis of the rod-shaped part to complete the coding of the rod-shaped part according to the length information and cross-sectional shape and size of the rod-shaped part, and to cure the coding through the coding curing device (35); The pneumatic feeding mechanism (4) is used to open the V-frame so that the rod-shaped parts are fed along the inner wall of the V-frame under the action of gravity.

2. The fully automatic inkjet printing device for rod-shaped parts according to claim 1, characterized in that, The V-shaped frame is arranged in several groups at intervals along the axis of the rod-shaped part on the machine frame. Each group of V-shaped frames consists of a loading V-shaped frame (13) and a unloading V-shaped frame (42). The loading V-shaped frame (13) and the unloading V-shaped frame (42) can be assembled together.

3. The fully automatic inkjet printing device for rod-shaped parts according to claim 2, characterized in that, The loading V-shaped frame (13) is installed in the loading blocking device (1), and the unloading V-shaped frame (42) is installed in the pneumatic unloading mechanism (4); both the loading V-shaped frame (13) and the unloading V-shaped frame (42) are hinged and can be rotated and opened.

4. The fully automatic inkjet printing device for rod-shaped parts according to claim 3, characterized in that, The feeding blocking device (1) also includes a feeding control cylinder (11). The bottom end of the cylinder body of the feeding control cylinder (11) is connected to the frame by a hinge. The piston end of the cylinder is hinged to the blocking block (12). The blocking block (12) is installed on the feeding V-shaped frame (13). When the rod-shaped part reaches the position of the blocking block (12), the feeding control cylinder (11) is in a retracted state. The rod-shaped part is blocked on one side of the feeding V-shaped frame (13). When the feeding control cylinder (11) receives the instruction to extend, the blocking block (12) falls down and the rod-shaped part is fed into the V-shaped frame.

5. The fully automatic inkjet printing device for rod-shaped parts according to claim 3, characterized in that, The pneumatic feeding mechanism (4) also includes a feeding control cylinder (41). One end of the feeding V-shaped frame (42) is hinged to the connecting rod. The feeding V-shaped frame (42) can rotate around the connecting rod. The feeding control cylinder (41) is hinged to the body of the feeding V-shaped frame (42). The feeding control cylinder (41) can lift the feeding V-shaped frame (42) from bottom to top, so that the inner wall of the feeding V-shaped frame (42) forms a slope, so that the rod-shaped part rolls along the inner wall of the V-shaped frame under the action of gravity.

6. The fully automatic inkjet printing device for rod-shaped parts according to claim 3, characterized in that, The loading V-frames (13) of all groups of V-frames operate synchronously, and the unloading V-frames (42) of all groups of V-frames operate synchronously.

7. The fully automatic inkjet printing device for rod-shaped parts according to claim 1, characterized in that, The V-shaped frame enables the self-centering of the circular cross-section rod-shaped part. The V-shaped frame positioning device (2) includes visual inspection cameras (21) respectively set at the front and rear ends of the V-shaped frame. The visual inspection cameras (21) take pictures of the rod-shaped part from the front and rear ends of the V-shaped frame respectively.

8. The fully automatic inkjet printing device for rod-shaped parts according to claim 1, characterized in that, The coding mechanism (3) includes a module (31), a roller (32), a guide rail (33), a coding machine (34), and a coding curing device (35); the module (31) can move up and down and move along the guide rail (33), the roller (32), the coding machine (34), and the coding curing device (35) are mounted on the module (31), and the guide rail (33) is arranged along the axial direction of the rod-shaped part.

9. The fully automatic inkjet printing device for rod-shaped parts according to claim 8, characterized in that, A rack is provided on the guide rail (33), and a gear that cooperates with the rack is provided on the module (31). The gear moves along the rack under the drive of the motor.

10. The fully automatic inkjet printing device for rod-shaped parts according to claim 8, characterized in that, The inkjet printing curing device (35) is a UV ultraviolet curing device.

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