Veneer detection equipment

Abstract

The utility model provides veneer detection equipment which comprises a darkroom, a detection glass platform is arranged in the darkroom, and a glass pressing plate is movably arranged on the detection glass platform; an image acquisition device, a light source device, a first moving device and a second moving device are further arranged in the darkroom, the image acquisition device is located above the glass detection platform, the light source device is located below the glass detection platform, the acquisition device is connected with the first moving device, and the light source device is connected with the second moving device; and the first moving device and the second moving device are arranged along the detection glass platform. In a darkroom environment, wood veneers are flatly laid on a detection glass platform, a glass pressing plate is used for pressing the wood veneers, emergent light of a light source device irradiates the bottom of the detection glass platform, a camera of an image collection device faces downwards to collect wood veneer images, and the light source device provides a backlight source, so that the image collection accuracy of the image collection device is improved; and the detection accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wood veneer surface defect detection, in particular to a wood veneer detection device. Background Art

[0002] In the field of wood processing, wood boards are divided into solid wood boards and artificial boards. Among them, plywood and other glued layer substrates in artificial boards are made by gluing multiple veneers. Generally, high-quality veneers are used as panels of artificial boards such as plywood, blockboard, templates, and veneers, while lower-grade veneers are used as backboards and core boards.

[0003] Take veneer as an example. Due to the limitations of veneer processing itself, the quality of veneer presents a certain randomness. One of the most important characteristics is that the thickness of the processed veneer is uneven. This is because the randomness of the growth of the wood itself leads to uneven hardness of the wood. When passing through the cutter, the veneer produced by the part with higher hardness is thicker and of higher quality. However, the veneer produced by the part with lower hardness is thinner and of lower quality. When the thickness of a whole piece of veneer is seriously uneven, the veneer needs to be repaired before it can enter the next process, and even the whole piece becomes unsuitable for processing. In addition, the wood itself may also have some defects due to other factors, such as insect eyes, mineral lines, color difference and other defects. Such veneer is not suitable for use as a panel. Therefore, the detection of veneer quality is an important link in veneer processing.

[0004] The existing Chinese patent application document with publication number CN207636508U discloses a single board defect detection system and equipment, including: a conveying device, an image acquisition device, a transmissive illumination device, and an output display device; wherein the conveying device drives the single board to be conveyed to the image acquisition area; the image acquisition device is located in the image acquisition area and is located on the upper part of the conveying device, and collects the transmissive illumination image of the single board; the transmissive illumination device is located in the image acquisition area and is at least partially located at the lower part of the conveying device, and projects light from the back of the single board so that the light passes through the single board and is acquired by the image acquisition device on the front; and the output display device is connected to the image acquisition device to display the defect recognition result.

[0005] In the prior art, the single board to be inspected is placed on a conveying device and transmitted to an image acquisition area, and the image of the single board is acquired by the image acquisition device. However, if the single board is placed directly on the conveying device, image acquisition errors may easily occur due to the vibration of the equipment during the transmission process and the influence of ambient light, thereby affecting the detection effect. There is room for improvement. Utility Model Content

[0006] In view of the defects in the prior art, the utility model aims to provide a veneer detection device.

[0007] According to the utility model, a veneer detection device is provided, including a darkroom, wherein a detection glass platform is arranged in the darkroom, and a glass pressing plate is movably arranged on the detection glass platform; an image acquisition device, a light source device, a first moving device and a second moving device are also arranged in the darkroom, wherein the image acquisition device is located above the detection glass platform, the light source device is located below the detection glass platform, the acquisition device is connected to the first moving device, the light source device is connected to the second moving device, and both the first moving device and the second moving device are along the detection glass platform.

[0008] Preferably, the darkroom comprises an openable door, and when the openable door is in an open state, the veneer to be inspected is allowed to pass through.

[0009] Preferably, the openable door comprises a rolling door, a switch button is provided on the outer wall of the darkroom, and a motor of the rolling door is electrically connected to the switch button.

[0010] Preferably, one side of the glass pressing plate is hinged to the detection glass platform via a rotating shaft.

[0011] Preferably, a positioning installation hole is provided on the side of the glass pressing plate opposite to the hinged side, and the glass pressing plate is connected to the detection glass platform through the positioning installation hole and the positioning bolts.

[0012] Preferably, the positioning bolt comprises a threaded portion and a hand-held circular ring portion, and the hand-held circular ring portion is fixedly connected to the threaded portion.

[0013] Preferably, a first linear guide rail and a first mounting frame are also provided in the darkroom, the first mounting frame is slidably mounted on the first linear guide rail, and the first mounting frame extends above the detection glass platform, the image acquisition device is fixedly mounted on the first mounting frame; the first moving device drives the first mounting frame to reciprocate along the first linear guide rail.

[0014] Preferably, a second linear guide rail and a second mounting frame are provided at the bottom of the detection glass platform, the second mounting frame is slidably mounted on the second linear guide rail, the light source device is arranged above the second mounting frame, and the light output side of the light source device faces the bottom of the detection glass platform; the second moving device drives the second mounting frame to reciprocate along the second linear guide rail.

[0015] Preferably, the first moving device drives the image acquisition device and the second moving device drives the light source device to move simultaneously, and the light source device is located directly below the image acquisition device.

[0016] Preferably, the darkroom is also provided with a label printer.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model lays the veneer flat on the detection glass platform in a dark room environment, presses the veneer with a glass pressing plate, and irradiates the light emitted by the light source device to the bottom of the detection glass platform. The camera of the image acquisition device faces downward to collect the veneer image. The light source device provides a backlight source, which helps to improve the accuracy of the image acquisition device to collect images, thereby helping to improve the accuracy of detection;

[0019] 2. The utility model drives the image acquisition device to move along the first linear guide rail through the first moving device, and drives the light source device to move along the second linear guide rail through the second moving device, so as to take pictures and collect images of the whole veneer, which helps to improve the convenience of detection.

[0020] 3. The utility model provides a positioning bolt with a hand-held circular ring on the glass pressing plate, which helps to improve the convenience for workers to place or take out the veneer on the detection glass platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 This is a top view of the overall internal structure of the detection equipment mainly embodied in the utility model;

[0023] Figure 2 This is a side view of the overall internal structure of the detection equipment mainly embodied in the utility model;

[0024] Figure 3 This is a bottom view mainly showing the overall internal structure of the detection equipment of the utility model;

[0025] Figure 4 This is a schematic diagram mainly showing the overall external structure of the detection equipment of the present invention.

[0026] Reference numerals:

[0027] Darkroom 1 Positioning bolt 6

[0028] Detection glass platform 2 First linear guide 7

[0029] Glass pressing plate 3 First mounting frame 8

[0030] Image acquisition device 4 Second linear guide rail 9

[0031] Light source device 5 Second mounting frame 10

[0032] Openable door 11 DETAILED DESCRIPTION

[0033] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0034] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a veneer detection device provided by the utility model comprises a darkroom 1, in which a detection glass platform 2 is arranged, and a glass pressing plate 3 is movably arranged on the detection glass platform 2. An image acquisition device 4, a light source device 5, a first moving device and a second moving device are also arranged in the darkroom 1, the image acquisition device 4 is located above the detection glass platform 2, the light source device 5 is located below the detection glass platform 2, the acquisition device is connected to the first moving device, the light source device 5 is connected to the second moving device, and both the first moving device and the second moving device are along the detection glass platform 2.

[0035] During inspection, the veneer is first spread flat on the inspection glass platform 2, then pressed with a glass pressing plate 3, and then the darkroom 1 is closed. The output light of the light source device 5 is irradiated to the bottom of the inspection glass platform 2, and the camera of the image acquisition device 4 is directed downward to acquire the image of the veneer, and the first moving device drives the acquisition device to move, and the second moving device drives the light source device 5 to move, thereby acquiring and inspecting the image of the entire veneer.

[0036] Specifically, the detection glass platform 2 is horizontally placed in the darkroom 1, and the large surface of the detection glass platform 2 is made of transparent glass material, which has sufficient light transmittance. The glass pressing plate 3 is installed above the detection glass platform 2, and one side of the glass pressing plate 3 is hinged to the detection glass platform 2 through a rotating shaft, so that the glass pressing plate 3 can rotate around the axis of the rotating shaft on the detection glass platform 2. It should be noted that the glass pressing plate 3 is also made of transparent glass and has sufficient light transmittance.

[0037] A positioning hole is provided on the side of the glass pressing plate 3 opposite to the hinged side, and the glass pressing plate 3 is connected to the detection glass platform 2 through the positioning hole and the positioning bolt 6. Specifically, a positioning hole is also provided on the side of the detection glass platform 2 opposite to the hinged side, and the positioning bolt 6 first passes through the positioning hole on the glass pressing plate 3 and then passes through the positioning hole on the detection glass platform 2, so as to achieve the stability of the glass pressing plate 3 pressing the veneer onto the detection glass platform 2. Furthermore, the positioning bolt 6 includes a threaded portion and a hand-held circular ring portion, and the hand-held circular ring portion is fixedly connected to the threaded portion. The hand-held circular ring portion improves the convenience of the staff in placing or removing the veneer on the detection glass platform 2.

[0038] A first linear guide rail 7 and a first mounting frame 8 are also provided in the darkroom 1. The first mounting frame 8 is slidably mounted on the first linear guide rail 7, and the first mounting frame 8 extends above the detection glass platform 2. The image acquisition device 4 is fixedly mounted on the first mounting frame 8, and the first moving device drives the first mounting frame 8 to reciprocate along the first linear guide rail 7. It should be noted that the sliding installation method of the first linear guide rail 7 and the first mounting frame 8 can be installed by a slider and a guide rail. The image acquisition device 4 can be a CCD camera in the prior art. The first moving device can be a linear motor, a threaded screw drive assembly, or other driving parts of the prior art for air intake linear reciprocating drive.

[0039] A second linear guide 9 and a second mounting frame 10 are provided at the bottom of the detection glass platform 2. The second mounting frame 10 is slidably mounted on the second linear guide 9. The light source device 5 is arranged above the second mounting frame 10, and the light emitting side of the light source device 5 faces the bottom of the detection glass platform 2. The second moving device drives the second mounting frame 10 to reciprocate along the second linear guide 9. It should be noted that the sliding installation method of the second linear guide 9 and the second mounting frame 10 can be installed by matching a slider and a guide rail. The light source device 5 can be a line scanning light source in the prior art. The second moving device can be a linear motor, a threaded screw drive assembly, or other driving components for air intake linear reciprocating drive in the prior art.

[0040] During detection, the first moving device drives the first mounting frame 8 to move along the first linear guide rail 7, thereby driving the image acquisition device 4 to move along the first linear guide rail 7, and the second moving device drives the second mounting frame 10 to move along the second linear guide rail 9, thereby driving the light source device 5 to move along the second linear guide rail 9. In the darkroom 1 environment, the light source device 5 provides a backlight source, thereby improving the accuracy of the image captured by the image acquisition device 4, thereby improving the accuracy of detection.

[0041] Preferably, the first moving device drives the image acquisition device 4 and the second moving device drives the light source device 5 to move simultaneously, and the light source device 5 is located directly below the image acquisition device 4 .

[0042] More specifically, the darkroom 1 includes an openable door 11. When the openable door 11 is in an open state, the wood veneer to be inspected can pass through. When the openable door 11 is in a closed state, the darkroom 1 is a closed environment, and external light cannot enter the darkroom 1. The openable door 11 includes a rolling door, and a switch button is provided on the outer wall of the darkroom 1. The motor of the rolling door is electrically connected to the switch button. The convenience of opening or closing the openable door 11 by the staff is improved.

[0043] The darkroom 1 is also provided with a label printer, which can be set inside or outside the darkroom 1. After the veneer inspection is completed, the label printer can print corresponding labels on the veneer to facilitate the later differentiation of the veneer.

[0044] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A veneer detection device, characterized in that: It comprises a darkroom (1), wherein a detection glass platform (2) is arranged in the darkroom (1), and a glass pressing plate (3) is movably arranged on the detection glass platform (2); The darkroom (1) is also provided with an image acquisition device (4), a light source device (5), a first moving device and a second moving device. The image acquisition device (4) is located above the detection glass platform (2), the light source device (5) is located below the detection glass platform (2), the acquisition device is connected to the first moving device, the light source device (5) is connected to the second moving device, and both the first moving device and the second moving device are along the detection glass platform (2).

2. The veneer detection device according to claim 1, characterized in that: The darkroom (1) comprises an openable door (11), and when the openable door (11) is in an open state, the veneer to be inspected is allowed to pass through.

3. The veneer detection device according to claim 2, characterized in that: The openable door (11) comprises a rolling door, a switch button is arranged on the outer wall of the darkroom (1), and a motor of the rolling door is electrically connected to the switch button.

4. The veneer detection device according to claim 1, characterized in that: One side of the glass pressing plate (3) is hinged to the detection glass platform (2) via a rotating shaft.

5. The veneer detection device according to claim 4, characterized in that: A positioning installation hole is provided on the side of the glass pressing plate (3) opposite to the hinged side, and the glass pressing plate (3) is connected to the detection glass platform (2) via the positioning installation hole and the positioning bolt (6).

6. The veneer detection device according to claim 5, characterized in that: The positioning bolt (6) comprises a threaded portion and a hand-held circular ring portion, and the hand-held circular ring portion is fixedly connected to the threaded portion.

7. The veneer detection device according to claim 1, characterized in that: A first linear guide rail (7) and a first mounting frame (8) are also provided in the darkroom (1); the first mounting frame (8) is slidably mounted on the first linear guide rail (7), and the first mounting frame (8) extends above the detection glass platform (2); and the image acquisition device (4) is fixedly mounted on the first mounting frame (8); The first moving device drives the first mounting frame (8) to reciprocate along the first linear guide rail (7).

8. The veneer detection device according to claim 1, characterized in that: A second linear guide rail (9) and a second mounting frame (10) are provided at the bottom of the detection glass platform (2); the second mounting frame (10) is slidably mounted on the second linear guide rail (9); the light source device (5) is arranged above the second mounting frame (10), and the light emitting side of the light source device (5) faces the bottom of the detection glass platform (2); The second moving device drives the second mounting frame (10) to reciprocate along the second linear guide rail (9).

9. The veneer detection device according to claim 1, characterized in that: The first moving device drives the image acquisition device (4) and the second moving device drives the light source device (5) to move simultaneously, and the light source device (5) is located directly below the image acquisition device (4).

10. The veneer detection device according to claim 1, characterized in that: The darkroom (1) is also provided with a label printer.

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