A plate thickness on-line detection device
By setting up upper and lower probes on both sides of the sheet material and using a magnetic scale, the problem of inaccurate sheet material detection results was solved, achieving high-precision and low-cost thickness detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI SUNWAY WOOD TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-23
AI Technical Summary
Existing plate contact thickness measuring devices only detect the distance between the plate and the placement platform by the upper probe, which leads to inaccurate detection results when the plate is bent or there are debris on the placement platform.
The upper and lower probes contact the top and bottom planes of the plate respectively, and a magnetic grating ruler is used instead of a grating ruler. Combined with a PLC controller and an industrial control computer for signal processing, the accuracy of thickness detection is ensured.
It achieves higher accuracy and lower cost in plate thickness detection, adapts to production environments with high dust and oil content, and reduces equipment costs.
Smart Images
Figure CN224398577U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plate thickness detection technology, and specifically relates to an online plate thickness detection device. Background Technology
[0002] Currently, in the engineered wood products industry, the most commonly used thickness measuring devices are laser, mechanical contact, and ultrasonic. Among them, mechanical contact thickness measuring devices are more widely used due to their high cost-effectiveness. These devices are installed after the diagonal saw at the exit of a continuous press or at the exit of a sander. They continuously measure the thickness of the board online, providing real-time monitoring to ensure that the thickness remains within the set range throughout the production process. This allows for timely detection and adjustment of problems during production, preventing quality issues caused by inconsistent thickness, thereby improving overall production efficiency and product quality.
[0003] Current plate contact thickness measuring devices only detect the distance between the plate and the placement platform by the upper probe. If the plate is bent or there are debris on the placement platform that causes the plate to tilt, it is easy to cause inaccurate detection results. Utility Model Content
[0004] The purpose of this invention is to provide an online plate thickness detection device, which solves the problem that existing plate contact thickness measurement devices only detect the distance between the plate and the placement platform by the upper probe. If the plate is bent or there are debris on the placement platform that causes the plate to tilt, the detection results are easily inaccurate.
[0005] The specific technical solution is as follows:
[0006] An online plate thickness detection device, comprising:
[0007] The work platform is equipped with supporting crossbeams;
[0008] The upper probe is mounted on the support beam and is used to contact the top plane of the plate.
[0009] The lower probe is mounted on the support beam and is symmetrically distributed with the upper probe on the support beam. The lower probe is used to contact the bottom plane of the plate.
[0010] The signal conversion module connects the upper probe and the lower probe.
[0011] PLC controller, the PLC controller is connected to the signal conversion module;
[0012] Industrial control computer, which is connected to the PLC controller.
[0013] Preferably, the upper probe includes a first cylinder, a first magnetic scale, and a first measuring shaft. The fixed end of the first cylinder is fixed to the supporting crossbeam, one end of the first measuring shaft is connected to the movable end of the first cylinder, the main scale of the first magnetic scale is installed on the supporting crossbeam, the reading head of the first magnetic scale is connected to the first measuring shaft, and the first magnetic scale is connected to the signal conversion module.
[0014] Preferably, the lower probe includes a second cylinder, a second magnetic scale, and a second measuring shaft. The fixed end of the second cylinder is fixed to the supporting crossbeam, one end of the second measuring shaft is connected to the movable end of the second cylinder, the main scale of the second magnetic scale is installed on the supporting crossbeam, the reading head of the second magnetic scale is connected to the second measuring shaft, and the second magnetic scale is connected to the signal conversion module.
[0015] Preferably, a first bearing is connected to the end of the first measuring axis facing the plate, and the outer edge of the first bearing protrudes from the end of the first measuring axis facing the plate.
[0016] Preferably, a second bearing is connected to the end of the second measuring shaft facing the plate, and the outer edge of the second bearing protrudes from the end of the second measuring shaft facing the plate.
[0017] Preferably, the end of the first measuring axis facing the plate abuts against the first anti-collision component, the first anti-collision component is provided with a first clearance groove, and the first bearing passes through the first clearance groove; the two ends of the first anti-collision component are respectively connected to the support beam by springs.
[0018] Preferably, the end of the second measuring shaft facing the plate abuts against a second anti-collision component, the second anti-collision component is provided with a second clearance groove, and the second bearing passes through the second clearance groove; the two ends of the second anti-collision component are respectively connected to the support beam by springs.
[0019] Preferably, both the first and second anti-collision components are arc-shaped plate structures.
[0020] Compared with existing technologies, this utility model has the following beneficial effects:
[0021] 1. The online plate thickness detection device of this utility model ensures the accuracy of thickness detection by detecting the top and bottom planes of the plate.
[0022] 2. The online thickness detection device for boards of this invention uses a magnetic grating ruler, replacing the expensive optical grating ruler used in existing board thickness measurement devices. The magnetic grating ruler achieves an accuracy of 0.1μm-1μm, meeting production requirements. The magnetic grating ruler is resistant to dust and oil, making it particularly suitable for the harsh operating environment of particleboard production lines with high dust and oil content. Furthermore, its price is approximately one-fifth that of an optical grating ruler, significantly reducing costs. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0024] Figure 1 This is a 3D diagram of an online plate thickness detection device.
[0025] Figure 2 This is a left view of an online plate thickness detection device.
[0026] Explanation of key figure labels:
[0027] 1 is a plate, 2 is a supporting beam, 3 is a second cylinder, 4 is a second measuring shaft, 5 is a first anti-collision component, 6 is a spring, 7 is a second magnetic scale, 8 is a second bearing, 9 is a first clearance groove, 10 is a first magnetic scale, 11 is a first cylinder, 12 is a second anti-collision component, 13 is a first measuring shaft, and 14 is a first bearing. Detailed Implementation
[0028] 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, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.
[0032] like Figures 1-2 As shown, this embodiment provides an online plate thickness detection device, comprising:
[0033] The work platform is equipped with two support beams 2. The two ends of the two support beams 2 are fixed to the work platform by support columns.
[0034] The upper probe is mounted on one of the supporting beams 2 and is used to contact the top plane of the plate 1.
[0035] The lower probe is mounted on another support beam 2, and the lower probe is symmetrically distributed on the support beam 2 with the upper probe. The lower probe is used to contact the bottom plane of the plate 1.
[0036] The signal conversion module connects the upper probe and the lower probe.
[0037] The PLC controller connects to the signal conversion module; specifically, the PLC controller used is the Siemens 1500 series PLC controller, which is simple and easy to operate.
[0038] Industrial control computer, which is connected to the PLC controller.
[0039] The industrial control computer uses a Siemens industrial control computer as the server for human-machine visual operation and communication;
[0040] The upper probe includes a first cylinder 11, a first magnetic scale 10, and a first measuring shaft 13. The fixed end of the first cylinder 11 is fixed to the supporting crossbeam 2. One end of the first measuring shaft 13 is connected to the movable end of the first cylinder 11. The main scale of the first magnetic scale 10 is installed on the supporting crossbeam 2. The reading head of the first magnetic scale 10 is connected to the first measuring shaft 13. The first magnetic scale 10 is connected to the signal conversion module.
[0041] The lower probe includes a second cylinder 3, a second magnetic scale 7, and a second measuring shaft 4. The fixed end of the second cylinder 3 is fixed to the supporting beam 2. One end of the second measuring shaft 4 is connected to the movable end of the second cylinder 3. The main scale of the second magnetic scale 7 is installed on the supporting beam 2. The reading head of the second magnetic scale 7 is connected to the second measuring shaft 4. The second magnetic scale 7 is connected to the signal conversion module.
[0042] The first measuring shaft 13 is connected to a first bearing 14 at one end facing the plate 1, and the outer edge of the first bearing 14 protrudes from the end of the first measuring shaft 13 facing the plate 1.
[0043] The second measuring shaft 4 is connected to the end of the plate 1 with a second bearing 8, and the outer edge of the second bearing 8 protrudes from the end of the second measuring shaft 4 facing the plate 1.
[0044] The first measuring shaft 13 abuts against the end of the plate 1 with a first anti-collision component 5. The first anti-collision component 5 is provided with a first clearance groove 9, and the first bearing 14 passes through the first clearance groove 9. The two ends of the first anti-collision component 5 are respectively connected to the support beam 2 by springs 6.
[0045] The second measuring shaft 4 abuts against the end of the plate 1 with a second anti-collision component 12. The second anti-collision component 12 is provided with a second clearance groove, and the second bearing 8 passes through the second clearance groove. The two ends of the second anti-collision component 12 are respectively connected to the support beam 2 by springs 6.
[0046] Both the first anti-collision component 5 and the second anti-collision component 12 are arc-shaped plate structures.
[0047] By incorporating anti-collision components with an arc-shaped plate structure, a unique flexible measurement process can be achieved, reducing the impact on the plate surface and giving it an ultra-long service life.
[0048] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. An online plate thickness detection device, characterized in that, include: The work platform is equipped with supporting beams; The upper probe is mounted on the support beam and is used to contact the top plane of the plate. The lower probe is mounted on the support beam and is symmetrically distributed with the upper probe on the support beam. The lower probe is used to contact the bottom plane of the plate. The signal conversion module connects the upper and lower probes. PLC controller, the PLC controller is connected to the signal conversion module; Industrial control computer, which is connected to the PLC controller.
2. The online plate thickness detection device according to claim 1, characterized in that, The upper probe includes a first cylinder, a first magnetic scale, and a first measuring shaft. The fixed end of the first cylinder is fixed to the supporting crossbeam. One end of the first measuring shaft is connected to the movable end of the first cylinder. The main scale of the first magnetic scale is installed on the supporting crossbeam. The reading head of the first magnetic scale is connected to the first measuring shaft. The first magnetic scale is connected to the signal conversion module.
3. The online plate thickness detection device according to claim 1, characterized in that, The lower probe includes a second cylinder, a second magnetic scale, and a second measuring shaft. The fixed end of the second cylinder is fixed to the supporting crossbeam. One end of the second measuring shaft is connected to the movable end of the second cylinder. The main scale of the second magnetic scale is installed on the supporting crossbeam. The reading head of the second magnetic scale is connected to the second measuring shaft. The second magnetic scale is also connected to the signal conversion module.
4. The online plate thickness detection device according to claim 2, characterized in that, The first measuring axis is connected to a first bearing at the end facing the plate, and the outer edge of the first bearing protrudes from the end of the first measuring axis facing the plate.
5. The online plate thickness detection device according to claim 3, characterized in that, The second measuring shaft is connected to a second bearing at the end facing the plate, and the outer edge of the second bearing protrudes from the end of the second measuring shaft facing the plate.
6. The online plate thickness detection device according to claim 2, characterized in that, The first measuring axis abuts against the first anti-collision component at the end facing the plate. The first anti-collision component is provided with a first clearance groove, and the first bearing passes through the first clearance groove. The two ends of the first anti-collision component are respectively connected to the support beam by springs.
7. The online plate thickness detection device according to claim 3, characterized in that, The second measuring shaft abuts against the end facing the plate with a second anti-collision component. The second anti-collision component is provided with a second clearance groove, and the second bearing passes through the second clearance groove. The two ends of the second anti-collision component are respectively connected to the support beam by springs.
8. The online plate thickness detection device according to claim 6 or 7, characterized in that, Both the first and second anti-collision components are curved plate structures.