A fast positioning method for container marking based on projection

Abstract

This invention discloses a projection-based rapid container marking positioning method, designed to address the low positioning efficiency and poor assembly accuracy of traditional assembly marking positioning methods. This method uses mapping software to draw the container's tank markings. Projection equipment then projects the drawn tank markings onto the container at a 1:1 ratio, ensuring the assembly position matches the drawing requirements. Finally, the marking content is sprayed at the projected location. This method boasts high precision and efficiency, significantly improving tank marking positioning efficiency and saving labor hours, thus possessing significant application value.

Description

Technical Field

[0001] The invention relates to an assembly positioning method, and in particular to a container marking rapid positioning method based on projection. Background Art

[0002] With the development of industrial manufacturing, the marketization of container products and customer demand are increasing, which has also put forward higher requirements for product assembly accuracy and assembly efficiency. In the existing container production and manufacturing process, traditional assembly positioning methods such as marking positioning and template positioning are often used for marking positioning. The marking positioning method requires marking and measuring before assembly, which takes a lot of time and manpower, is extremely inefficient, and has a low reuse rate of positioning methods. At the same time, the selection of container positioning reference points is crucial. If the selection is inappropriate, it is easy to cause batch quality problems. If the size is marked on a free-form surface or a complex part, it may not even be possible to find an effective marking reference point, and thus it is impossible to accurately position. Template positioning requires the production of a proportional template first, and the production of the template requires the support of bulky tooling. The template is prone to wear and deformation, affecting the assembly quality. The template also requires regular maintenance during later use.

[0003] In summary, the traditional assembly mark positioning method has low positioning efficiency and poor assembly accuracy, and is not suitable for mark positioning with high assembly accuracy requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a projection-based container marker rapid positioning method to solve the technical problems of low positioning efficiency and poor assembly accuracy in traditional assembly marker positioning methods.

[0005] In order to achieve the above object, the specific technical solutions of the present invention are as follows:

[0006] A method for rapid container marking positioning based on projection is characterized in that it includes the following steps:

[0007] Step 1: Draw the tank mark of the container using drawing software; the tank mark includes the outer contour and the marking content;

[0008] Step 2: Use a projection device to project the tank container mark drawn in Step 1 onto the container at a 1:1 ratio. Measure and adjust the position of the projected mark according to the requirements of the design drawing. The projected mark refers to the tank container mark projected onto the container surface.

[0009] Step 3: Measure the relative position between the light source point of the projection device and the projection mark in step 2, and use the relative position and the projection focal length of the projection device as positioning parameters;

[0010] Step 4: Place the projection device on the projection mount and adjust the fixed height of the projection device. Adjust the process parameters of the projection device by moving the projection mount. The process parameters refer to the relative position of the projection device with respect to the container and the focal length of the projection device during the movement of the projection mount. If the process parameters are consistent with the positioning parameters described in Step 3, it means that the projection mark meets the requirements of the design drawing, and the rapid positioning of a container mark is completed. Then proceed to Step 6; otherwise, proceed to Step 5.

[0011] Step 5: Measure the size and projection position of the projection mark according to the requirements of the container product design drawing. If they meet the requirements, it means that the projection mark meets the requirements and proceed to step 6; otherwise, adjust the process parameters again and return to step 4;

[0012] Step 6: According to the requirements of the container product design drawings, use the methods of steps 1 to 5 to quickly locate other marks on the container.

[0013] Furthermore, in step 1, the drawing software is CAD or Photoshop.

[0014] Furthermore, step 2 specifically involves adjusting the relative position between the projection light source point of the projection device and the container, as well as the projection focal length of the projection device, so that the tank container mark appears on the container surface in a 1:1 ratio according to the size required by the design drawing. The position of the projection mark is then measured and adjusted according to the requirements of the design drawing, thereby completing the accurate projection of the tank container mark by the projection device.

[0015] Furthermore, in step 4, the projection fixing frame is a tripod structure, and rollers are provided at the bottom of the tripod structure.

[0016] Furthermore, a track is laid on the lower part of the roller for rapid movement and positioning of the projection fixing frame relative to the container during the container marking process.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention uses a projection-based rapid container marking positioning method. The tank marking of the container is drawn using mapping software. The drawn tank marking is then projected onto the container at a 1:1 ratio using a projection device. The position of the projected marking is measured and adjusted according to the requirements of the design drawing. Finally, the marking content is sprayed at the projected position. This method features high precision and high work efficiency, greatly improving the efficiency of tank marking positioning, saving work hours, and possessing extremely high application value.

[0019] 2. The projection-based rapid positioning method for container marks of the present invention can realize the rapid and modular positioning of container marks, logos, etc., greatly improving the efficiency of tank container mark positioning, saving costs and having good economic benefits. In addition, the method can also be applied to the positioning of curved or irregularly shaped products, and has a wide range of applications.

[0020] 3. The projection-based rapid container marking positioning method of the present invention does not incur template or tool change costs due to design changes such as product drawings, thereby reducing manufacturing costs. At the same time, projection positioning can also be used to inspect assembly parts, paint marks, and other parts, which is an effective error prevention method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the projection process according to an embodiment of the present invention.

[0022] The reference numerals are as follows:

[0023] 1-Container, 2-Projection equipment, 3-Projection fixing frame, 4-Marking positioning frame. DETAILED DESCRIPTION

[0024] The design concept of the present invention is as follows: During the manufacturing process of tank containers, the assembly of parts and paint markings requires positioning and assembly, while traditional marking positioning or template positioning has low efficiency and high labor and labor costs. It is often a bottleneck process for the production of large quantities of tank containers, and improper selection of reference points can easily lead to batch quality problems. The present invention introduces projection positioning technology into the container manufacturing industry, using projection positioning to position and assemble assembly parts, marking paint, etc. On the one hand, it meets the requirements of positioning and assembly accuracy, thereby greatly improving assembly efficiency; on the other hand, laser projection positioning, as an error-proofing measure, can verify the assembly position and accuracy, avoid rework and repair, and thus improve product quality to meet the needs of product marketization.

[0025] To make the objects, advantages, and features of the present invention more clearly apparent, the present invention is further described below in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all greatly simplified and not to exact scale, and are only used to conveniently and clearly illustrate the purposes of the embodiments of the present invention. Furthermore, the structures shown in the drawings are often portions of actual structures.

[0026] like Figure 1 As shown, the present invention provides a method for rapid positioning of container marks based on projection, which specifically includes the following steps:

[0027] Step 1: Draw the tank mark of container 1 using drawing software.

[0028] In this embodiment, first, the tank container mark is drawn according to the product design drawings and relevant technical requirements. The tank container mark includes the outer contour and the specific marking content. All tank container marks can be drawn at once using common drawing software such as CAD or Photoshop. If a certain mark is used, the file of the certain mark can be exported to the projection device.

[0029] Step 2: Project the tank container mark drawn in step 1 onto container 1 at a 1:1 ratio using projection device 2.

[0030] Specifically, by adjusting the relative position between the projection light source of projection device 2 and container 1, as well as the projection focal length of projection device 2, the tank container mark appears in the mark positioning frame 4 on the surface of container 1 at a 1:1 ratio, as required by the design drawing. The position of the projected mark is then measured and adjusted according to the requirements of the design drawing, thereby achieving precise projection of the tank container mark by the projection device. In this embodiment, an engineering laser projector is generally used as the projection device to ensure its projection stability.

[0031] Step 3: Measure the relative position between the light source point of the projection device 2 and the projection mark in step 2, and use the relative position and the projection focal length of the projection device 2 as positioning parameters.

[0032] Step 4: Place the projection device 2 on the projection mount 3 and adjust its fixed height. The projection mount 3 can be a tripod, other fixed structure, or a custom structure to ensure stable projection after the projection device 2 is placed on it. To ensure convenient and smooth movement, the bottom of the projection mount 3 is equipped with rollers, and the lower part of the rollers can also be laid with tracks for rapid movement and positioning of the projection mount relative to the container during the container marking process. By moving the projection mount 3, the process parameters of the projection device 2 are adjusted. The process parameters here refer to the relative position of the projection device 2 with respect to the container 1 during the movement of the projection mount 3 and the focal length of the projection device 2. When the process parameters are consistent with the positioning parameters described in step 3, it means that the projection mark is projected on the container at a 1:1 ratio according to the requirements of the design drawings, thereby completing the rapid positioning of the container 1 mark, and then proceeding to step 6; otherwise, proceed to step 5.

[0033] Step 5: Measure the size and position of the projection mark according to the design drawing of container 1. If they meet the requirements, it means that the projection mark meets the requirements, and then proceed to step 6. Otherwise, adjust the process parameters again or measure the size and position of the projection mark and adjust them until the tank container mark is projected 1:1 at the design position of the container drawing.

[0034] Step 6: According to the requirements of the product design drawing of container 1, use the methods of steps 1 to 5 to complete the rapid positioning of other marks of container 1.

[0035] Finally, the logo is sprayed according to the outer contour and content of the projected mark on the container. This method can also be used to quickly position and weld container parts.

[0036] This invention uses the relative position between the projected light source and the product as a process parameter. During mass production, as long as the relative position parameter remains constant, the positioning pattern is projected at the assembly position specified in the drawing. Tank marking and component positioning and assembly are performed using the positioning frame projected onto the container. Projection positioning, by adjusting the projection focal length, is suitable for positioning and assembly of larger assemblies and is equally applicable to flat and irregularly shaped surfaces.

[0037] Although a number of embodiments of the present invention have been shown and described above, it will be apparent to those skilled in the art that any changes or modifications to the above embodiments should fall within the scope of protection of the present invention as long as they fall within the spirit of the present invention.

Claims

1. A method for rapid container marking positioning based on projection, characterized in that: The following steps are involved: Step 1: Draw the tank mark of the container using drawing software; the tank mark includes the outer contour and the marking content; Step 2: Use a projection device to project the tank container mark drawn in Step 1 onto the container at a 1:1 ratio. Measure and adjust the position of the projected mark according to the requirements of the design drawing. The projected mark refers to the tank container mark projected on the container surface. Specifically: By adjusting the relative position between the projection light source and the container, as well as the projection focal length of the projection device, the tank container mark is made to appear on the container surface in a 1:1 ratio according to the size required by the design drawing. The position of the projection mark is then measured and adjusted according to the requirements of the design drawing, thus completing the accurate projection of the tank container mark by the projection device. Step 3: Measure the relative position between the light source point of the projection device and the projection mark in step 2, and use the relative position and the projection focal length of the projection device as positioning parameters; Step 4: Place the projection device on the projection mount and adjust the fixed height of the projection device. Adjust the process parameters of the projection device by moving the projection mount. The process parameters refer to the relative position of the projection device with respect to the container and the focal length of the projection device during the movement of the projection mount. When the process parameters are consistent with the positioning parameters described in Step 3, it means that the projected mark meets the requirements of the design drawing, and the rapid positioning of a container mark is completed, and then proceed to Step 6. Otherwise, go to step 5; Step 5: Measure the size and projection position of the projection mark according to the requirements of the container product design drawing. If they meet the requirements, it means that the projection mark meets the requirements and proceed to step 6; otherwise, adjust the process parameters again and return to step 4; Step 6: According to the requirements of the container product design drawings, use the methods of steps 1 to 5 to quickly locate other marks on the container.

2. The projection-based container marker rapid positioning method according to claim 1, characterized in that: In step 1, the drawing software is CAD or Photoshop.

3. The projection-based container marker rapid positioning method according to claim 2, characterized in that: In step 4, the projection fixing frame is a tripod structure, and rollers are provided at the bottom of the tripod structure.

4. The projection-based container marker rapid positioning method according to claim 3, characterized in that: A track is laid on the lower part of the roller, which is used for the rapid movement and positioning of the projection fixing frame relative to the container during the container marking process.

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